Termination w.r.t. Q of the following Term Rewriting System could not be shown:

Q restricted rewrite system:
The TRS R consists of the following rules:

a__and(tt, T) → mark(T)
a__isNatIList(IL) → a__isNatList(IL)
a__isNat(0) → tt
a__isNat(s(N)) → a__isNat(N)
a__isNat(length(L)) → a__isNatList(L)
a__isNatIList(zeros) → tt
a__isNatIList(cons(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__isNatList(nil) → tt
a__isNatList(cons(N, L)) → a__and(a__isNat(N), a__isNatList(L))
a__isNatList(take(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__zeroscons(0, zeros)
a__take(0, IL) → a__uTake1(a__isNatIList(IL))
a__uTake1(tt) → nil
a__take(s(M), cons(N, IL)) → a__uTake2(a__and(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL))), M, N, IL)
a__uTake2(tt, M, N, IL) → cons(mark(N), take(M, IL))
a__length(cons(N, L)) → a__uLength(a__and(a__isNat(N), a__isNatList(L)), L)
a__uLength(tt, L) → s(a__length(mark(L)))
mark(and(X1, X2)) → a__and(mark(X1), mark(X2))
mark(isNatIList(X)) → a__isNatIList(X)
mark(isNatList(X)) → a__isNatList(X)
mark(isNat(X)) → a__isNat(X)
mark(length(X)) → a__length(mark(X))
mark(zeros) → a__zeros
mark(take(X1, X2)) → a__take(mark(X1), mark(X2))
mark(uTake1(X)) → a__uTake1(mark(X))
mark(uTake2(X1, X2, X3, X4)) → a__uTake2(mark(X1), X2, X3, X4)
mark(uLength(X1, X2)) → a__uLength(mark(X1), X2)
mark(tt) → tt
mark(0) → 0
mark(s(X)) → s(mark(X))
mark(cons(X1, X2)) → cons(mark(X1), X2)
mark(nil) → nil
a__and(X1, X2) → and(X1, X2)
a__isNatIList(X) → isNatIList(X)
a__isNatList(X) → isNatList(X)
a__isNat(X) → isNat(X)
a__length(X) → length(X)
a__zeroszeros
a__take(X1, X2) → take(X1, X2)
a__uTake1(X) → uTake1(X)
a__uTake2(X1, X2, X3, X4) → uTake2(X1, X2, X3, X4)
a__uLength(X1, X2) → uLength(X1, X2)

Q is empty.


QTRS
  ↳ DependencyPairsProof

Q restricted rewrite system:
The TRS R consists of the following rules:

a__and(tt, T) → mark(T)
a__isNatIList(IL) → a__isNatList(IL)
a__isNat(0) → tt
a__isNat(s(N)) → a__isNat(N)
a__isNat(length(L)) → a__isNatList(L)
a__isNatIList(zeros) → tt
a__isNatIList(cons(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__isNatList(nil) → tt
a__isNatList(cons(N, L)) → a__and(a__isNat(N), a__isNatList(L))
a__isNatList(take(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__zeroscons(0, zeros)
a__take(0, IL) → a__uTake1(a__isNatIList(IL))
a__uTake1(tt) → nil
a__take(s(M), cons(N, IL)) → a__uTake2(a__and(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL))), M, N, IL)
a__uTake2(tt, M, N, IL) → cons(mark(N), take(M, IL))
a__length(cons(N, L)) → a__uLength(a__and(a__isNat(N), a__isNatList(L)), L)
a__uLength(tt, L) → s(a__length(mark(L)))
mark(and(X1, X2)) → a__and(mark(X1), mark(X2))
mark(isNatIList(X)) → a__isNatIList(X)
mark(isNatList(X)) → a__isNatList(X)
mark(isNat(X)) → a__isNat(X)
mark(length(X)) → a__length(mark(X))
mark(zeros) → a__zeros
mark(take(X1, X2)) → a__take(mark(X1), mark(X2))
mark(uTake1(X)) → a__uTake1(mark(X))
mark(uTake2(X1, X2, X3, X4)) → a__uTake2(mark(X1), X2, X3, X4)
mark(uLength(X1, X2)) → a__uLength(mark(X1), X2)
mark(tt) → tt
mark(0) → 0
mark(s(X)) → s(mark(X))
mark(cons(X1, X2)) → cons(mark(X1), X2)
mark(nil) → nil
a__and(X1, X2) → and(X1, X2)
a__isNatIList(X) → isNatIList(X)
a__isNatList(X) → isNatList(X)
a__isNat(X) → isNat(X)
a__length(X) → length(X)
a__zeroszeros
a__take(X1, X2) → take(X1, X2)
a__uTake1(X) → uTake1(X)
a__uTake2(X1, X2, X3, X4) → uTake2(X1, X2, X3, X4)
a__uLength(X1, X2) → uLength(X1, X2)

Q is empty.

Using Dependency Pairs [1,15] we result in the following initial DP problem:
Q DP problem:
The TRS P consists of the following rules:

MARK(take(X1, X2)) → MARK(X2)
A__ISNATLIST(cons(N, L)) → A__ISNATLIST(L)
MARK(zeros) → A__ZEROS
A__LENGTH(cons(N, L)) → A__ISNAT(N)
MARK(s(X)) → MARK(X)
A__TAKE(s(M), cons(N, IL)) → A__ISNATILIST(IL)
A__ISNATILIST(cons(N, IL)) → A__ISNATILIST(IL)
MARK(isNatIList(X)) → A__ISNATILIST(X)
MARK(cons(X1, X2)) → MARK(X1)
MARK(length(X)) → A__LENGTH(mark(X))
MARK(uTake1(X)) → A__UTAKE1(mark(X))
A__AND(tt, T) → MARK(T)
MARK(length(X)) → MARK(X)
A__UTAKE2(tt, M, N, IL) → MARK(N)
MARK(uLength(X1, X2)) → A__ULENGTH(mark(X1), X2)
MARK(uTake2(X1, X2, X3, X4)) → MARK(X1)
A__LENGTH(cons(N, L)) → A__AND(a__isNat(N), a__isNatList(L))
MARK(and(X1, X2)) → MARK(X1)
MARK(take(X1, X2)) → MARK(X1)
A__ISNATLIST(cons(N, L)) → A__ISNAT(N)
A__ULENGTH(tt, L) → A__LENGTH(mark(L))
MARK(and(X1, X2)) → MARK(X2)
A__ISNATILIST(IL) → A__ISNATLIST(IL)
A__LENGTH(cons(N, L)) → A__ISNATLIST(L)
A__TAKE(0, IL) → A__UTAKE1(a__isNatIList(IL))
A__TAKE(s(M), cons(N, IL)) → A__AND(a__isNat(N), a__isNatIList(IL))
MARK(uTake2(X1, X2, X3, X4)) → A__UTAKE2(mark(X1), X2, X3, X4)
MARK(take(X1, X2)) → A__TAKE(mark(X1), mark(X2))
A__TAKE(s(M), cons(N, IL)) → A__AND(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL)))
A__ISNAT(s(N)) → A__ISNAT(N)
A__TAKE(0, IL) → A__ISNATILIST(IL)
MARK(uLength(X1, X2)) → MARK(X1)
A__ISNATLIST(take(N, IL)) → A__AND(a__isNat(N), a__isNatIList(IL))
A__ISNATILIST(cons(N, IL)) → A__AND(a__isNat(N), a__isNatIList(IL))
A__TAKE(s(M), cons(N, IL)) → A__ISNAT(N)
A__ISNATLIST(cons(N, L)) → A__AND(a__isNat(N), a__isNatList(L))
A__TAKE(s(M), cons(N, IL)) → A__UTAKE2(a__and(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL))), M, N, IL)
MARK(uTake1(X)) → MARK(X)
A__TAKE(s(M), cons(N, IL)) → A__ISNAT(M)
A__LENGTH(cons(N, L)) → A__ULENGTH(a__and(a__isNat(N), a__isNatList(L)), L)
A__ULENGTH(tt, L) → MARK(L)
A__ISNAT(length(L)) → A__ISNATLIST(L)
MARK(isNat(X)) → A__ISNAT(X)
A__ISNATLIST(take(N, IL)) → A__ISNAT(N)
A__ISNATILIST(cons(N, IL)) → A__ISNAT(N)
MARK(isNatList(X)) → A__ISNATLIST(X)
MARK(and(X1, X2)) → A__AND(mark(X1), mark(X2))
A__ISNATLIST(take(N, IL)) → A__ISNATILIST(IL)

The TRS R consists of the following rules:

a__and(tt, T) → mark(T)
a__isNatIList(IL) → a__isNatList(IL)
a__isNat(0) → tt
a__isNat(s(N)) → a__isNat(N)
a__isNat(length(L)) → a__isNatList(L)
a__isNatIList(zeros) → tt
a__isNatIList(cons(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__isNatList(nil) → tt
a__isNatList(cons(N, L)) → a__and(a__isNat(N), a__isNatList(L))
a__isNatList(take(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__zeroscons(0, zeros)
a__take(0, IL) → a__uTake1(a__isNatIList(IL))
a__uTake1(tt) → nil
a__take(s(M), cons(N, IL)) → a__uTake2(a__and(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL))), M, N, IL)
a__uTake2(tt, M, N, IL) → cons(mark(N), take(M, IL))
a__length(cons(N, L)) → a__uLength(a__and(a__isNat(N), a__isNatList(L)), L)
a__uLength(tt, L) → s(a__length(mark(L)))
mark(and(X1, X2)) → a__and(mark(X1), mark(X2))
mark(isNatIList(X)) → a__isNatIList(X)
mark(isNatList(X)) → a__isNatList(X)
mark(isNat(X)) → a__isNat(X)
mark(length(X)) → a__length(mark(X))
mark(zeros) → a__zeros
mark(take(X1, X2)) → a__take(mark(X1), mark(X2))
mark(uTake1(X)) → a__uTake1(mark(X))
mark(uTake2(X1, X2, X3, X4)) → a__uTake2(mark(X1), X2, X3, X4)
mark(uLength(X1, X2)) → a__uLength(mark(X1), X2)
mark(tt) → tt
mark(0) → 0
mark(s(X)) → s(mark(X))
mark(cons(X1, X2)) → cons(mark(X1), X2)
mark(nil) → nil
a__and(X1, X2) → and(X1, X2)
a__isNatIList(X) → isNatIList(X)
a__isNatList(X) → isNatList(X)
a__isNat(X) → isNat(X)
a__length(X) → length(X)
a__zeroszeros
a__take(X1, X2) → take(X1, X2)
a__uTake1(X) → uTake1(X)
a__uTake2(X1, X2, X3, X4) → uTake2(X1, X2, X3, X4)
a__uLength(X1, X2) → uLength(X1, X2)

Q is empty.
We have to consider all minimal (P,Q,R)-chains.

↳ QTRS
  ↳ DependencyPairsProof
QDP
      ↳ DependencyGraphProof

Q DP problem:
The TRS P consists of the following rules:

MARK(take(X1, X2)) → MARK(X2)
A__ISNATLIST(cons(N, L)) → A__ISNATLIST(L)
MARK(zeros) → A__ZEROS
A__LENGTH(cons(N, L)) → A__ISNAT(N)
MARK(s(X)) → MARK(X)
A__TAKE(s(M), cons(N, IL)) → A__ISNATILIST(IL)
A__ISNATILIST(cons(N, IL)) → A__ISNATILIST(IL)
MARK(isNatIList(X)) → A__ISNATILIST(X)
MARK(cons(X1, X2)) → MARK(X1)
MARK(length(X)) → A__LENGTH(mark(X))
MARK(uTake1(X)) → A__UTAKE1(mark(X))
A__AND(tt, T) → MARK(T)
MARK(length(X)) → MARK(X)
A__UTAKE2(tt, M, N, IL) → MARK(N)
MARK(uLength(X1, X2)) → A__ULENGTH(mark(X1), X2)
MARK(uTake2(X1, X2, X3, X4)) → MARK(X1)
A__LENGTH(cons(N, L)) → A__AND(a__isNat(N), a__isNatList(L))
MARK(and(X1, X2)) → MARK(X1)
MARK(take(X1, X2)) → MARK(X1)
A__ISNATLIST(cons(N, L)) → A__ISNAT(N)
A__ULENGTH(tt, L) → A__LENGTH(mark(L))
MARK(and(X1, X2)) → MARK(X2)
A__ISNATILIST(IL) → A__ISNATLIST(IL)
A__LENGTH(cons(N, L)) → A__ISNATLIST(L)
A__TAKE(0, IL) → A__UTAKE1(a__isNatIList(IL))
A__TAKE(s(M), cons(N, IL)) → A__AND(a__isNat(N), a__isNatIList(IL))
MARK(uTake2(X1, X2, X3, X4)) → A__UTAKE2(mark(X1), X2, X3, X4)
MARK(take(X1, X2)) → A__TAKE(mark(X1), mark(X2))
A__TAKE(s(M), cons(N, IL)) → A__AND(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL)))
A__ISNAT(s(N)) → A__ISNAT(N)
A__TAKE(0, IL) → A__ISNATILIST(IL)
MARK(uLength(X1, X2)) → MARK(X1)
A__ISNATLIST(take(N, IL)) → A__AND(a__isNat(N), a__isNatIList(IL))
A__ISNATILIST(cons(N, IL)) → A__AND(a__isNat(N), a__isNatIList(IL))
A__TAKE(s(M), cons(N, IL)) → A__ISNAT(N)
A__ISNATLIST(cons(N, L)) → A__AND(a__isNat(N), a__isNatList(L))
A__TAKE(s(M), cons(N, IL)) → A__UTAKE2(a__and(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL))), M, N, IL)
MARK(uTake1(X)) → MARK(X)
A__TAKE(s(M), cons(N, IL)) → A__ISNAT(M)
A__LENGTH(cons(N, L)) → A__ULENGTH(a__and(a__isNat(N), a__isNatList(L)), L)
A__ULENGTH(tt, L) → MARK(L)
A__ISNAT(length(L)) → A__ISNATLIST(L)
MARK(isNat(X)) → A__ISNAT(X)
A__ISNATLIST(take(N, IL)) → A__ISNAT(N)
A__ISNATILIST(cons(N, IL)) → A__ISNAT(N)
MARK(isNatList(X)) → A__ISNATLIST(X)
MARK(and(X1, X2)) → A__AND(mark(X1), mark(X2))
A__ISNATLIST(take(N, IL)) → A__ISNATILIST(IL)

The TRS R consists of the following rules:

a__and(tt, T) → mark(T)
a__isNatIList(IL) → a__isNatList(IL)
a__isNat(0) → tt
a__isNat(s(N)) → a__isNat(N)
a__isNat(length(L)) → a__isNatList(L)
a__isNatIList(zeros) → tt
a__isNatIList(cons(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__isNatList(nil) → tt
a__isNatList(cons(N, L)) → a__and(a__isNat(N), a__isNatList(L))
a__isNatList(take(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__zeroscons(0, zeros)
a__take(0, IL) → a__uTake1(a__isNatIList(IL))
a__uTake1(tt) → nil
a__take(s(M), cons(N, IL)) → a__uTake2(a__and(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL))), M, N, IL)
a__uTake2(tt, M, N, IL) → cons(mark(N), take(M, IL))
a__length(cons(N, L)) → a__uLength(a__and(a__isNat(N), a__isNatList(L)), L)
a__uLength(tt, L) → s(a__length(mark(L)))
mark(and(X1, X2)) → a__and(mark(X1), mark(X2))
mark(isNatIList(X)) → a__isNatIList(X)
mark(isNatList(X)) → a__isNatList(X)
mark(isNat(X)) → a__isNat(X)
mark(length(X)) → a__length(mark(X))
mark(zeros) → a__zeros
mark(take(X1, X2)) → a__take(mark(X1), mark(X2))
mark(uTake1(X)) → a__uTake1(mark(X))
mark(uTake2(X1, X2, X3, X4)) → a__uTake2(mark(X1), X2, X3, X4)
mark(uLength(X1, X2)) → a__uLength(mark(X1), X2)
mark(tt) → tt
mark(0) → 0
mark(s(X)) → s(mark(X))
mark(cons(X1, X2)) → cons(mark(X1), X2)
mark(nil) → nil
a__and(X1, X2) → and(X1, X2)
a__isNatIList(X) → isNatIList(X)
a__isNatList(X) → isNatList(X)
a__isNat(X) → isNat(X)
a__length(X) → length(X)
a__zeroszeros
a__take(X1, X2) → take(X1, X2)
a__uTake1(X) → uTake1(X)
a__uTake2(X1, X2, X3, X4) → uTake2(X1, X2, X3, X4)
a__uLength(X1, X2) → uLength(X1, X2)

Q is empty.
We have to consider all minimal (P,Q,R)-chains.
The approximation of the Dependency Graph [15,17,22] contains 1 SCC with 3 less nodes.

↳ QTRS
  ↳ DependencyPairsProof
    ↳ QDP
      ↳ DependencyGraphProof
QDP
          ↳ QDPOrderProof

Q DP problem:
The TRS P consists of the following rules:

MARK(take(X1, X2)) → MARK(X2)
A__ISNATLIST(cons(N, L)) → A__ISNATLIST(L)
A__LENGTH(cons(N, L)) → A__ISNAT(N)
A__TAKE(s(M), cons(N, IL)) → A__ISNATILIST(IL)
MARK(s(X)) → MARK(X)
A__ISNATILIST(cons(N, IL)) → A__ISNATILIST(IL)
MARK(isNatIList(X)) → A__ISNATILIST(X)
MARK(cons(X1, X2)) → MARK(X1)
MARK(length(X)) → A__LENGTH(mark(X))
A__AND(tt, T) → MARK(T)
A__UTAKE2(tt, M, N, IL) → MARK(N)
MARK(length(X)) → MARK(X)
MARK(uLength(X1, X2)) → A__ULENGTH(mark(X1), X2)
MARK(uTake2(X1, X2, X3, X4)) → MARK(X1)
A__LENGTH(cons(N, L)) → A__AND(a__isNat(N), a__isNatList(L))
MARK(and(X1, X2)) → MARK(X1)
MARK(take(X1, X2)) → MARK(X1)
A__ISNATLIST(cons(N, L)) → A__ISNAT(N)
A__ULENGTH(tt, L) → A__LENGTH(mark(L))
A__ISNATILIST(IL) → A__ISNATLIST(IL)
MARK(and(X1, X2)) → MARK(X2)
A__LENGTH(cons(N, L)) → A__ISNATLIST(L)
A__TAKE(s(M), cons(N, IL)) → A__AND(a__isNat(N), a__isNatIList(IL))
MARK(uTake2(X1, X2, X3, X4)) → A__UTAKE2(mark(X1), X2, X3, X4)
MARK(take(X1, X2)) → A__TAKE(mark(X1), mark(X2))
A__TAKE(s(M), cons(N, IL)) → A__AND(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL)))
A__TAKE(0, IL) → A__ISNATILIST(IL)
A__ISNAT(s(N)) → A__ISNAT(N)
MARK(uLength(X1, X2)) → MARK(X1)
A__ISNATLIST(take(N, IL)) → A__AND(a__isNat(N), a__isNatIList(IL))
A__ISNATILIST(cons(N, IL)) → A__AND(a__isNat(N), a__isNatIList(IL))
A__TAKE(s(M), cons(N, IL)) → A__ISNAT(N)
A__ISNATLIST(cons(N, L)) → A__AND(a__isNat(N), a__isNatList(L))
A__TAKE(s(M), cons(N, IL)) → A__UTAKE2(a__and(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL))), M, N, IL)
MARK(uTake1(X)) → MARK(X)
A__TAKE(s(M), cons(N, IL)) → A__ISNAT(M)
A__LENGTH(cons(N, L)) → A__ULENGTH(a__and(a__isNat(N), a__isNatList(L)), L)
A__ULENGTH(tt, L) → MARK(L)
A__ISNAT(length(L)) → A__ISNATLIST(L)
A__ISNATLIST(take(N, IL)) → A__ISNAT(N)
A__ISNATILIST(cons(N, IL)) → A__ISNAT(N)
MARK(isNat(X)) → A__ISNAT(X)
MARK(and(X1, X2)) → A__AND(mark(X1), mark(X2))
MARK(isNatList(X)) → A__ISNATLIST(X)
A__ISNATLIST(take(N, IL)) → A__ISNATILIST(IL)

The TRS R consists of the following rules:

a__and(tt, T) → mark(T)
a__isNatIList(IL) → a__isNatList(IL)
a__isNat(0) → tt
a__isNat(s(N)) → a__isNat(N)
a__isNat(length(L)) → a__isNatList(L)
a__isNatIList(zeros) → tt
a__isNatIList(cons(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__isNatList(nil) → tt
a__isNatList(cons(N, L)) → a__and(a__isNat(N), a__isNatList(L))
a__isNatList(take(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__zeroscons(0, zeros)
a__take(0, IL) → a__uTake1(a__isNatIList(IL))
a__uTake1(tt) → nil
a__take(s(M), cons(N, IL)) → a__uTake2(a__and(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL))), M, N, IL)
a__uTake2(tt, M, N, IL) → cons(mark(N), take(M, IL))
a__length(cons(N, L)) → a__uLength(a__and(a__isNat(N), a__isNatList(L)), L)
a__uLength(tt, L) → s(a__length(mark(L)))
mark(and(X1, X2)) → a__and(mark(X1), mark(X2))
mark(isNatIList(X)) → a__isNatIList(X)
mark(isNatList(X)) → a__isNatList(X)
mark(isNat(X)) → a__isNat(X)
mark(length(X)) → a__length(mark(X))
mark(zeros) → a__zeros
mark(take(X1, X2)) → a__take(mark(X1), mark(X2))
mark(uTake1(X)) → a__uTake1(mark(X))
mark(uTake2(X1, X2, X3, X4)) → a__uTake2(mark(X1), X2, X3, X4)
mark(uLength(X1, X2)) → a__uLength(mark(X1), X2)
mark(tt) → tt
mark(0) → 0
mark(s(X)) → s(mark(X))
mark(cons(X1, X2)) → cons(mark(X1), X2)
mark(nil) → nil
a__and(X1, X2) → and(X1, X2)
a__isNatIList(X) → isNatIList(X)
a__isNatList(X) → isNatList(X)
a__isNat(X) → isNat(X)
a__length(X) → length(X)
a__zeroszeros
a__take(X1, X2) → take(X1, X2)
a__uTake1(X) → uTake1(X)
a__uTake2(X1, X2, X3, X4) → uTake2(X1, X2, X3, X4)
a__uLength(X1, X2) → uLength(X1, X2)

Q is empty.
We have to consider all minimal (P,Q,R)-chains.
We use the reduction pair processor [15].


The following pairs can be oriented strictly and are deleted.


MARK(length(X)) → A__LENGTH(mark(X))
MARK(length(X)) → MARK(X)
MARK(uLength(X1, X2)) → A__ULENGTH(mark(X1), X2)
MARK(uLength(X1, X2)) → MARK(X1)
The remaining pairs can at least be oriented weakly.

MARK(take(X1, X2)) → MARK(X2)
A__ISNATLIST(cons(N, L)) → A__ISNATLIST(L)
A__LENGTH(cons(N, L)) → A__ISNAT(N)
A__TAKE(s(M), cons(N, IL)) → A__ISNATILIST(IL)
MARK(s(X)) → MARK(X)
A__ISNATILIST(cons(N, IL)) → A__ISNATILIST(IL)
MARK(isNatIList(X)) → A__ISNATILIST(X)
MARK(cons(X1, X2)) → MARK(X1)
A__AND(tt, T) → MARK(T)
A__UTAKE2(tt, M, N, IL) → MARK(N)
MARK(uTake2(X1, X2, X3, X4)) → MARK(X1)
A__LENGTH(cons(N, L)) → A__AND(a__isNat(N), a__isNatList(L))
MARK(and(X1, X2)) → MARK(X1)
MARK(take(X1, X2)) → MARK(X1)
A__ISNATLIST(cons(N, L)) → A__ISNAT(N)
A__ULENGTH(tt, L) → A__LENGTH(mark(L))
A__ISNATILIST(IL) → A__ISNATLIST(IL)
MARK(and(X1, X2)) → MARK(X2)
A__LENGTH(cons(N, L)) → A__ISNATLIST(L)
A__TAKE(s(M), cons(N, IL)) → A__AND(a__isNat(N), a__isNatIList(IL))
MARK(uTake2(X1, X2, X3, X4)) → A__UTAKE2(mark(X1), X2, X3, X4)
MARK(take(X1, X2)) → A__TAKE(mark(X1), mark(X2))
A__TAKE(s(M), cons(N, IL)) → A__AND(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL)))
A__TAKE(0, IL) → A__ISNATILIST(IL)
A__ISNAT(s(N)) → A__ISNAT(N)
A__ISNATLIST(take(N, IL)) → A__AND(a__isNat(N), a__isNatIList(IL))
A__ISNATILIST(cons(N, IL)) → A__AND(a__isNat(N), a__isNatIList(IL))
A__TAKE(s(M), cons(N, IL)) → A__ISNAT(N)
A__ISNATLIST(cons(N, L)) → A__AND(a__isNat(N), a__isNatList(L))
A__TAKE(s(M), cons(N, IL)) → A__UTAKE2(a__and(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL))), M, N, IL)
MARK(uTake1(X)) → MARK(X)
A__TAKE(s(M), cons(N, IL)) → A__ISNAT(M)
A__LENGTH(cons(N, L)) → A__ULENGTH(a__and(a__isNat(N), a__isNatList(L)), L)
A__ULENGTH(tt, L) → MARK(L)
A__ISNAT(length(L)) → A__ISNATLIST(L)
A__ISNATLIST(take(N, IL)) → A__ISNAT(N)
A__ISNATILIST(cons(N, IL)) → A__ISNAT(N)
MARK(isNat(X)) → A__ISNAT(X)
MARK(and(X1, X2)) → A__AND(mark(X1), mark(X2))
MARK(isNatList(X)) → A__ISNATLIST(X)
A__ISNATLIST(take(N, IL)) → A__ISNATILIST(IL)
Used ordering: Polynomial interpretation with max and min functions [25]:

POL(0) = 0   
POL(A__AND(x1, x2)) = x2   
POL(A__ISNAT(x1)) = 0   
POL(A__ISNATILIST(x1)) = 0   
POL(A__ISNATLIST(x1)) = 0   
POL(A__LENGTH(x1)) = x1   
POL(A__TAKE(x1, x2)) = x2   
POL(A__ULENGTH(x1, x2)) = x2   
POL(A__UTAKE2(x1, x2, x3, x4)) = x3   
POL(MARK(x1)) = x1   
POL(a__and(x1, x2)) = x1 + x2   
POL(a__isNat(x1)) = 0   
POL(a__isNatIList(x1)) = 0   
POL(a__isNatList(x1)) = 0   
POL(a__length(x1)) = 1 + x1   
POL(a__take(x1, x2)) = x1 + x2   
POL(a__uLength(x1, x2)) = 1 + x1 + x2   
POL(a__uTake1(x1)) = x1   
POL(a__uTake2(x1, x2, x3, x4)) = x1 + x2 + x3 + x4   
POL(a__zeros) = 0   
POL(and(x1, x2)) = x1 + x2   
POL(cons(x1, x2)) = x1 + x2   
POL(isNat(x1)) = 0   
POL(isNatIList(x1)) = 0   
POL(isNatList(x1)) = 0   
POL(length(x1)) = 1 + x1   
POL(mark(x1)) = x1   
POL(nil) = 0   
POL(s(x1)) = x1   
POL(take(x1, x2)) = x1 + x2   
POL(tt) = 0   
POL(uLength(x1, x2)) = 1 + x1 + x2   
POL(uTake1(x1)) = x1   
POL(uTake2(x1, x2, x3, x4)) = x1 + x2 + x3 + x4   
POL(zeros) = 0   

The following usable rules [17] were oriented:

mark(nil) → nil
mark(cons(X1, X2)) → cons(mark(X1), X2)
a__isNatIList(X) → isNatIList(X)
a__and(X1, X2) → and(X1, X2)
a__isNat(X) → isNat(X)
a__isNatList(X) → isNatList(X)
a__zeroszeros
a__length(X) → length(X)
mark(take(X1, X2)) → a__take(mark(X1), mark(X2))
mark(zeros) → a__zeros
mark(uTake2(X1, X2, X3, X4)) → a__uTake2(mark(X1), X2, X3, X4)
mark(uTake1(X)) → a__uTake1(mark(X))
mark(tt) → tt
mark(uLength(X1, X2)) → a__uLength(mark(X1), X2)
mark(s(X)) → s(mark(X))
mark(0) → 0
a__take(X1, X2) → take(X1, X2)
a__uTake1(X) → uTake1(X)
a__uTake2(X1, X2, X3, X4) → uTake2(X1, X2, X3, X4)
a__uLength(X1, X2) → uLength(X1, X2)
a__isNatIList(zeros) → tt
a__isNat(0) → tt
a__take(s(M), cons(N, IL)) → a__uTake2(a__and(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL))), M, N, IL)
a__uTake1(tt) → nil
a__take(0, IL) → a__uTake1(a__isNatIList(IL))
a__zeroscons(0, zeros)
a__isNatList(nil) → tt
mark(length(X)) → a__length(mark(X))
a__isNatIList(IL) → a__isNatList(IL)
mark(isNat(X)) → a__isNat(X)
a__isNat(s(N)) → a__isNat(N)
a__and(tt, T) → mark(T)
mark(isNatList(X)) → a__isNatList(X)
a__isNatIList(cons(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
mark(isNatIList(X)) → a__isNatIList(X)
a__isNat(length(L)) → a__isNatList(L)
mark(and(X1, X2)) → a__and(mark(X1), mark(X2))
a__isNatList(cons(N, L)) → a__and(a__isNat(N), a__isNatList(L))
a__isNatList(take(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__uLength(tt, L) → s(a__length(mark(L)))
a__length(cons(N, L)) → a__uLength(a__and(a__isNat(N), a__isNatList(L)), L)
a__uTake2(tt, M, N, IL) → cons(mark(N), take(M, IL))



↳ QTRS
  ↳ DependencyPairsProof
    ↳ QDP
      ↳ DependencyGraphProof
        ↳ QDP
          ↳ QDPOrderProof
QDP
              ↳ DependencyGraphProof

Q DP problem:
The TRS P consists of the following rules:

MARK(take(X1, X2)) → MARK(X2)
A__ISNATLIST(cons(N, L)) → A__ISNATLIST(L)
A__LENGTH(cons(N, L)) → A__ISNAT(N)
MARK(s(X)) → MARK(X)
A__TAKE(s(M), cons(N, IL)) → A__ISNATILIST(IL)
A__ISNATILIST(cons(N, IL)) → A__ISNATILIST(IL)
MARK(isNatIList(X)) → A__ISNATILIST(X)
MARK(cons(X1, X2)) → MARK(X1)
A__AND(tt, T) → MARK(T)
A__UTAKE2(tt, M, N, IL) → MARK(N)
MARK(uTake2(X1, X2, X3, X4)) → MARK(X1)
A__LENGTH(cons(N, L)) → A__AND(a__isNat(N), a__isNatList(L))
MARK(and(X1, X2)) → MARK(X1)
MARK(take(X1, X2)) → MARK(X1)
A__ISNATLIST(cons(N, L)) → A__ISNAT(N)
A__ULENGTH(tt, L) → A__LENGTH(mark(L))
A__ISNATILIST(IL) → A__ISNATLIST(IL)
MARK(and(X1, X2)) → MARK(X2)
A__LENGTH(cons(N, L)) → A__ISNATLIST(L)
A__TAKE(s(M), cons(N, IL)) → A__AND(a__isNat(N), a__isNatIList(IL))
MARK(uTake2(X1, X2, X3, X4)) → A__UTAKE2(mark(X1), X2, X3, X4)
MARK(take(X1, X2)) → A__TAKE(mark(X1), mark(X2))
A__TAKE(s(M), cons(N, IL)) → A__AND(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL)))
A__TAKE(0, IL) → A__ISNATILIST(IL)
A__ISNAT(s(N)) → A__ISNAT(N)
A__ISNATILIST(cons(N, IL)) → A__AND(a__isNat(N), a__isNatIList(IL))
A__ISNATLIST(take(N, IL)) → A__AND(a__isNat(N), a__isNatIList(IL))
A__TAKE(s(M), cons(N, IL)) → A__ISNAT(N)
A__ISNATLIST(cons(N, L)) → A__AND(a__isNat(N), a__isNatList(L))
A__TAKE(s(M), cons(N, IL)) → A__UTAKE2(a__and(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL))), M, N, IL)
MARK(uTake1(X)) → MARK(X)
A__TAKE(s(M), cons(N, IL)) → A__ISNAT(M)
A__LENGTH(cons(N, L)) → A__ULENGTH(a__and(a__isNat(N), a__isNatList(L)), L)
A__ISNAT(length(L)) → A__ISNATLIST(L)
A__ULENGTH(tt, L) → MARK(L)
MARK(isNat(X)) → A__ISNAT(X)
A__ISNATILIST(cons(N, IL)) → A__ISNAT(N)
A__ISNATLIST(take(N, IL)) → A__ISNAT(N)
MARK(isNatList(X)) → A__ISNATLIST(X)
MARK(and(X1, X2)) → A__AND(mark(X1), mark(X2))
A__ISNATLIST(take(N, IL)) → A__ISNATILIST(IL)

The TRS R consists of the following rules:

a__and(tt, T) → mark(T)
a__isNatIList(IL) → a__isNatList(IL)
a__isNat(0) → tt
a__isNat(s(N)) → a__isNat(N)
a__isNat(length(L)) → a__isNatList(L)
a__isNatIList(zeros) → tt
a__isNatIList(cons(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__isNatList(nil) → tt
a__isNatList(cons(N, L)) → a__and(a__isNat(N), a__isNatList(L))
a__isNatList(take(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__zeroscons(0, zeros)
a__take(0, IL) → a__uTake1(a__isNatIList(IL))
a__uTake1(tt) → nil
a__take(s(M), cons(N, IL)) → a__uTake2(a__and(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL))), M, N, IL)
a__uTake2(tt, M, N, IL) → cons(mark(N), take(M, IL))
a__length(cons(N, L)) → a__uLength(a__and(a__isNat(N), a__isNatList(L)), L)
a__uLength(tt, L) → s(a__length(mark(L)))
mark(and(X1, X2)) → a__and(mark(X1), mark(X2))
mark(isNatIList(X)) → a__isNatIList(X)
mark(isNatList(X)) → a__isNatList(X)
mark(isNat(X)) → a__isNat(X)
mark(length(X)) → a__length(mark(X))
mark(zeros) → a__zeros
mark(take(X1, X2)) → a__take(mark(X1), mark(X2))
mark(uTake1(X)) → a__uTake1(mark(X))
mark(uTake2(X1, X2, X3, X4)) → a__uTake2(mark(X1), X2, X3, X4)
mark(uLength(X1, X2)) → a__uLength(mark(X1), X2)
mark(tt) → tt
mark(0) → 0
mark(s(X)) → s(mark(X))
mark(cons(X1, X2)) → cons(mark(X1), X2)
mark(nil) → nil
a__and(X1, X2) → and(X1, X2)
a__isNatIList(X) → isNatIList(X)
a__isNatList(X) → isNatList(X)
a__isNat(X) → isNat(X)
a__length(X) → length(X)
a__zeroszeros
a__take(X1, X2) → take(X1, X2)
a__uTake1(X) → uTake1(X)
a__uTake2(X1, X2, X3, X4) → uTake2(X1, X2, X3, X4)
a__uLength(X1, X2) → uLength(X1, X2)

Q is empty.
We have to consider all minimal (P,Q,R)-chains.
The approximation of the Dependency Graph [15,17,22] contains 2 SCCs with 4 less nodes.

↳ QTRS
  ↳ DependencyPairsProof
    ↳ QDP
      ↳ DependencyGraphProof
        ↳ QDP
          ↳ QDPOrderProof
            ↳ QDP
              ↳ DependencyGraphProof
                ↳ AND
QDP
                    ↳ QDPOrderProof
                  ↳ QDP

Q DP problem:
The TRS P consists of the following rules:

MARK(take(X1, X2)) → MARK(X2)
A__ISNATLIST(cons(N, L)) → A__ISNATLIST(L)
A__TAKE(s(M), cons(N, IL)) → A__ISNATILIST(IL)
MARK(s(X)) → MARK(X)
A__ISNATILIST(cons(N, IL)) → A__ISNATILIST(IL)
MARK(isNatIList(X)) → A__ISNATILIST(X)
MARK(cons(X1, X2)) → MARK(X1)
A__AND(tt, T) → MARK(T)
A__UTAKE2(tt, M, N, IL) → MARK(N)
MARK(uTake2(X1, X2, X3, X4)) → MARK(X1)
MARK(and(X1, X2)) → MARK(X1)
MARK(take(X1, X2)) → MARK(X1)
A__ISNATLIST(cons(N, L)) → A__ISNAT(N)
A__ISNATILIST(IL) → A__ISNATLIST(IL)
MARK(and(X1, X2)) → MARK(X2)
A__TAKE(s(M), cons(N, IL)) → A__AND(a__isNat(N), a__isNatIList(IL))
MARK(uTake2(X1, X2, X3, X4)) → A__UTAKE2(mark(X1), X2, X3, X4)
MARK(take(X1, X2)) → A__TAKE(mark(X1), mark(X2))
A__TAKE(s(M), cons(N, IL)) → A__AND(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL)))
A__ISNAT(s(N)) → A__ISNAT(N)
A__TAKE(0, IL) → A__ISNATILIST(IL)
A__ISNATLIST(take(N, IL)) → A__AND(a__isNat(N), a__isNatIList(IL))
A__ISNATILIST(cons(N, IL)) → A__AND(a__isNat(N), a__isNatIList(IL))
A__TAKE(s(M), cons(N, IL)) → A__ISNAT(N)
A__ISNATLIST(cons(N, L)) → A__AND(a__isNat(N), a__isNatList(L))
A__TAKE(s(M), cons(N, IL)) → A__UTAKE2(a__and(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL))), M, N, IL)
MARK(uTake1(X)) → MARK(X)
A__TAKE(s(M), cons(N, IL)) → A__ISNAT(M)
A__ISNAT(length(L)) → A__ISNATLIST(L)
A__ISNATLIST(take(N, IL)) → A__ISNAT(N)
A__ISNATILIST(cons(N, IL)) → A__ISNAT(N)
MARK(isNat(X)) → A__ISNAT(X)
MARK(and(X1, X2)) → A__AND(mark(X1), mark(X2))
MARK(isNatList(X)) → A__ISNATLIST(X)
A__ISNATLIST(take(N, IL)) → A__ISNATILIST(IL)

The TRS R consists of the following rules:

a__and(tt, T) → mark(T)
a__isNatIList(IL) → a__isNatList(IL)
a__isNat(0) → tt
a__isNat(s(N)) → a__isNat(N)
a__isNat(length(L)) → a__isNatList(L)
a__isNatIList(zeros) → tt
a__isNatIList(cons(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__isNatList(nil) → tt
a__isNatList(cons(N, L)) → a__and(a__isNat(N), a__isNatList(L))
a__isNatList(take(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__zeroscons(0, zeros)
a__take(0, IL) → a__uTake1(a__isNatIList(IL))
a__uTake1(tt) → nil
a__take(s(M), cons(N, IL)) → a__uTake2(a__and(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL))), M, N, IL)
a__uTake2(tt, M, N, IL) → cons(mark(N), take(M, IL))
a__length(cons(N, L)) → a__uLength(a__and(a__isNat(N), a__isNatList(L)), L)
a__uLength(tt, L) → s(a__length(mark(L)))
mark(and(X1, X2)) → a__and(mark(X1), mark(X2))
mark(isNatIList(X)) → a__isNatIList(X)
mark(isNatList(X)) → a__isNatList(X)
mark(isNat(X)) → a__isNat(X)
mark(length(X)) → a__length(mark(X))
mark(zeros) → a__zeros
mark(take(X1, X2)) → a__take(mark(X1), mark(X2))
mark(uTake1(X)) → a__uTake1(mark(X))
mark(uTake2(X1, X2, X3, X4)) → a__uTake2(mark(X1), X2, X3, X4)
mark(uLength(X1, X2)) → a__uLength(mark(X1), X2)
mark(tt) → tt
mark(0) → 0
mark(s(X)) → s(mark(X))
mark(cons(X1, X2)) → cons(mark(X1), X2)
mark(nil) → nil
a__and(X1, X2) → and(X1, X2)
a__isNatIList(X) → isNatIList(X)
a__isNatList(X) → isNatList(X)
a__isNat(X) → isNat(X)
a__length(X) → length(X)
a__zeroszeros
a__take(X1, X2) → take(X1, X2)
a__uTake1(X) → uTake1(X)
a__uTake2(X1, X2, X3, X4) → uTake2(X1, X2, X3, X4)
a__uLength(X1, X2) → uLength(X1, X2)

Q is empty.
We have to consider all minimal (P,Q,R)-chains.
We use the reduction pair processor [15].


The following pairs can be oriented strictly and are deleted.


A__TAKE(s(M), cons(N, IL)) → A__ISNATILIST(IL)
MARK(cons(X1, X2)) → MARK(X1)
MARK(uTake2(X1, X2, X3, X4)) → MARK(X1)
A__TAKE(s(M), cons(N, IL)) → A__AND(a__isNat(N), a__isNatIList(IL))
MARK(uTake2(X1, X2, X3, X4)) → A__UTAKE2(mark(X1), X2, X3, X4)
A__TAKE(s(M), cons(N, IL)) → A__AND(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL)))
A__TAKE(s(M), cons(N, IL)) → A__ISNAT(N)
A__TAKE(s(M), cons(N, IL)) → A__UTAKE2(a__and(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL))), M, N, IL)
A__TAKE(s(M), cons(N, IL)) → A__ISNAT(M)
The remaining pairs can at least be oriented weakly.

MARK(take(X1, X2)) → MARK(X2)
A__ISNATLIST(cons(N, L)) → A__ISNATLIST(L)
MARK(s(X)) → MARK(X)
A__ISNATILIST(cons(N, IL)) → A__ISNATILIST(IL)
MARK(isNatIList(X)) → A__ISNATILIST(X)
A__AND(tt, T) → MARK(T)
A__UTAKE2(tt, M, N, IL) → MARK(N)
MARK(and(X1, X2)) → MARK(X1)
MARK(take(X1, X2)) → MARK(X1)
A__ISNATLIST(cons(N, L)) → A__ISNAT(N)
A__ISNATILIST(IL) → A__ISNATLIST(IL)
MARK(and(X1, X2)) → MARK(X2)
MARK(take(X1, X2)) → A__TAKE(mark(X1), mark(X2))
A__ISNAT(s(N)) → A__ISNAT(N)
A__TAKE(0, IL) → A__ISNATILIST(IL)
A__ISNATLIST(take(N, IL)) → A__AND(a__isNat(N), a__isNatIList(IL))
A__ISNATILIST(cons(N, IL)) → A__AND(a__isNat(N), a__isNatIList(IL))
A__ISNATLIST(cons(N, L)) → A__AND(a__isNat(N), a__isNatList(L))
MARK(uTake1(X)) → MARK(X)
A__ISNAT(length(L)) → A__ISNATLIST(L)
A__ISNATLIST(take(N, IL)) → A__ISNAT(N)
A__ISNATILIST(cons(N, IL)) → A__ISNAT(N)
MARK(isNat(X)) → A__ISNAT(X)
MARK(and(X1, X2)) → A__AND(mark(X1), mark(X2))
MARK(isNatList(X)) → A__ISNATLIST(X)
A__ISNATLIST(take(N, IL)) → A__ISNATILIST(IL)
Used ordering: Polynomial interpretation with max and min functions [25]:

POL(0) = 0   
POL(A__AND(x1, x2)) = x2   
POL(A__ISNAT(x1)) = 0   
POL(A__ISNATILIST(x1)) = 0   
POL(A__ISNATLIST(x1)) = 0   
POL(A__TAKE(x1, x2)) = x2   
POL(A__UTAKE2(x1, x2, x3, x4)) = x3   
POL(MARK(x1)) = x1   
POL(a__and(x1, x2)) = x1 + x2   
POL(a__isNat(x1)) = 0   
POL(a__isNatIList(x1)) = 0   
POL(a__isNatList(x1)) = 0   
POL(a__length(x1)) = 1   
POL(a__take(x1, x2)) = x1 + x2   
POL(a__uLength(x1, x2)) = 1   
POL(a__uTake1(x1)) = x1   
POL(a__uTake2(x1, x2, x3, x4)) = 1 + x1 + x3   
POL(a__zeros) = 1   
POL(and(x1, x2)) = x1 + x2   
POL(cons(x1, x2)) = 1 + x1   
POL(isNat(x1)) = 0   
POL(isNatIList(x1)) = 0   
POL(isNatList(x1)) = 0   
POL(length(x1)) = 1   
POL(mark(x1)) = x1   
POL(nil) = 0   
POL(s(x1)) = x1   
POL(take(x1, x2)) = x1 + x2   
POL(tt) = 0   
POL(uLength(x1, x2)) = 1   
POL(uTake1(x1)) = x1   
POL(uTake2(x1, x2, x3, x4)) = 1 + x1 + x3   
POL(zeros) = 1   

The following usable rules [17] were oriented:

mark(nil) → nil
mark(cons(X1, X2)) → cons(mark(X1), X2)
a__isNatIList(X) → isNatIList(X)
a__and(X1, X2) → and(X1, X2)
a__isNat(X) → isNat(X)
a__isNatList(X) → isNatList(X)
a__zeroszeros
a__length(X) → length(X)
mark(take(X1, X2)) → a__take(mark(X1), mark(X2))
mark(zeros) → a__zeros
mark(uTake2(X1, X2, X3, X4)) → a__uTake2(mark(X1), X2, X3, X4)
mark(uTake1(X)) → a__uTake1(mark(X))
mark(tt) → tt
mark(uLength(X1, X2)) → a__uLength(mark(X1), X2)
mark(s(X)) → s(mark(X))
mark(0) → 0
a__take(X1, X2) → take(X1, X2)
a__uTake1(X) → uTake1(X)
a__uTake2(X1, X2, X3, X4) → uTake2(X1, X2, X3, X4)
a__uLength(X1, X2) → uLength(X1, X2)
a__isNatIList(zeros) → tt
a__isNat(0) → tt
a__take(s(M), cons(N, IL)) → a__uTake2(a__and(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL))), M, N, IL)
a__uTake1(tt) → nil
a__take(0, IL) → a__uTake1(a__isNatIList(IL))
a__zeroscons(0, zeros)
a__isNatList(nil) → tt
mark(length(X)) → a__length(mark(X))
a__isNatIList(IL) → a__isNatList(IL)
mark(isNat(X)) → a__isNat(X)
a__isNat(s(N)) → a__isNat(N)
a__and(tt, T) → mark(T)
mark(isNatList(X)) → a__isNatList(X)
a__isNatIList(cons(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
mark(isNatIList(X)) → a__isNatIList(X)
a__isNat(length(L)) → a__isNatList(L)
mark(and(X1, X2)) → a__and(mark(X1), mark(X2))
a__isNatList(cons(N, L)) → a__and(a__isNat(N), a__isNatList(L))
a__isNatList(take(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__uLength(tt, L) → s(a__length(mark(L)))
a__length(cons(N, L)) → a__uLength(a__and(a__isNat(N), a__isNatList(L)), L)
a__uTake2(tt, M, N, IL) → cons(mark(N), take(M, IL))



↳ QTRS
  ↳ DependencyPairsProof
    ↳ QDP
      ↳ DependencyGraphProof
        ↳ QDP
          ↳ QDPOrderProof
            ↳ QDP
              ↳ DependencyGraphProof
                ↳ AND
                  ↳ QDP
                    ↳ QDPOrderProof
QDP
                        ↳ DependencyGraphProof
                  ↳ QDP

Q DP problem:
The TRS P consists of the following rules:

MARK(take(X1, X2)) → MARK(X2)
A__ISNATLIST(cons(N, L)) → A__ISNATLIST(L)
MARK(s(X)) → MARK(X)
A__ISNATILIST(cons(N, IL)) → A__ISNATILIST(IL)
MARK(isNatIList(X)) → A__ISNATILIST(X)
A__AND(tt, T) → MARK(T)
A__UTAKE2(tt, M, N, IL) → MARK(N)
MARK(and(X1, X2)) → MARK(X1)
MARK(take(X1, X2)) → MARK(X1)
A__ISNATLIST(cons(N, L)) → A__ISNAT(N)
MARK(and(X1, X2)) → MARK(X2)
A__ISNATILIST(IL) → A__ISNATLIST(IL)
MARK(take(X1, X2)) → A__TAKE(mark(X1), mark(X2))
A__ISNAT(s(N)) → A__ISNAT(N)
A__TAKE(0, IL) → A__ISNATILIST(IL)
A__ISNATLIST(take(N, IL)) → A__AND(a__isNat(N), a__isNatIList(IL))
A__ISNATILIST(cons(N, IL)) → A__AND(a__isNat(N), a__isNatIList(IL))
A__ISNATLIST(cons(N, L)) → A__AND(a__isNat(N), a__isNatList(L))
MARK(uTake1(X)) → MARK(X)
A__ISNAT(length(L)) → A__ISNATLIST(L)
A__ISNATLIST(take(N, IL)) → A__ISNAT(N)
A__ISNATILIST(cons(N, IL)) → A__ISNAT(N)
MARK(isNat(X)) → A__ISNAT(X)
MARK(and(X1, X2)) → A__AND(mark(X1), mark(X2))
MARK(isNatList(X)) → A__ISNATLIST(X)
A__ISNATLIST(take(N, IL)) → A__ISNATILIST(IL)

The TRS R consists of the following rules:

a__and(tt, T) → mark(T)
a__isNatIList(IL) → a__isNatList(IL)
a__isNat(0) → tt
a__isNat(s(N)) → a__isNat(N)
a__isNat(length(L)) → a__isNatList(L)
a__isNatIList(zeros) → tt
a__isNatIList(cons(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__isNatList(nil) → tt
a__isNatList(cons(N, L)) → a__and(a__isNat(N), a__isNatList(L))
a__isNatList(take(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__zeroscons(0, zeros)
a__take(0, IL) → a__uTake1(a__isNatIList(IL))
a__uTake1(tt) → nil
a__take(s(M), cons(N, IL)) → a__uTake2(a__and(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL))), M, N, IL)
a__uTake2(tt, M, N, IL) → cons(mark(N), take(M, IL))
a__length(cons(N, L)) → a__uLength(a__and(a__isNat(N), a__isNatList(L)), L)
a__uLength(tt, L) → s(a__length(mark(L)))
mark(and(X1, X2)) → a__and(mark(X1), mark(X2))
mark(isNatIList(X)) → a__isNatIList(X)
mark(isNatList(X)) → a__isNatList(X)
mark(isNat(X)) → a__isNat(X)
mark(length(X)) → a__length(mark(X))
mark(zeros) → a__zeros
mark(take(X1, X2)) → a__take(mark(X1), mark(X2))
mark(uTake1(X)) → a__uTake1(mark(X))
mark(uTake2(X1, X2, X3, X4)) → a__uTake2(mark(X1), X2, X3, X4)
mark(uLength(X1, X2)) → a__uLength(mark(X1), X2)
mark(tt) → tt
mark(0) → 0
mark(s(X)) → s(mark(X))
mark(cons(X1, X2)) → cons(mark(X1), X2)
mark(nil) → nil
a__and(X1, X2) → and(X1, X2)
a__isNatIList(X) → isNatIList(X)
a__isNatList(X) → isNatList(X)
a__isNat(X) → isNat(X)
a__length(X) → length(X)
a__zeroszeros
a__take(X1, X2) → take(X1, X2)
a__uTake1(X) → uTake1(X)
a__uTake2(X1, X2, X3, X4) → uTake2(X1, X2, X3, X4)
a__uLength(X1, X2) → uLength(X1, X2)

Q is empty.
We have to consider all minimal (P,Q,R)-chains.
The approximation of the Dependency Graph [15,17,22] contains 1 SCC with 1 less node.

↳ QTRS
  ↳ DependencyPairsProof
    ↳ QDP
      ↳ DependencyGraphProof
        ↳ QDP
          ↳ QDPOrderProof
            ↳ QDP
              ↳ DependencyGraphProof
                ↳ AND
                  ↳ QDP
                    ↳ QDPOrderProof
                      ↳ QDP
                        ↳ DependencyGraphProof
QDP
                            ↳ QDPOrderProof
                  ↳ QDP

Q DP problem:
The TRS P consists of the following rules:

MARK(take(X1, X2)) → MARK(X2)
A__ISNATLIST(cons(N, L)) → A__ISNATLIST(L)
MARK(s(X)) → MARK(X)
A__ISNATILIST(cons(N, IL)) → A__ISNATILIST(IL)
MARK(isNatIList(X)) → A__ISNATILIST(X)
A__AND(tt, T) → MARK(T)
MARK(and(X1, X2)) → MARK(X1)
MARK(take(X1, X2)) → MARK(X1)
A__ISNATLIST(cons(N, L)) → A__ISNAT(N)
A__ISNATILIST(IL) → A__ISNATLIST(IL)
MARK(and(X1, X2)) → MARK(X2)
MARK(take(X1, X2)) → A__TAKE(mark(X1), mark(X2))
A__ISNAT(s(N)) → A__ISNAT(N)
A__TAKE(0, IL) → A__ISNATILIST(IL)
A__ISNATLIST(take(N, IL)) → A__AND(a__isNat(N), a__isNatIList(IL))
A__ISNATILIST(cons(N, IL)) → A__AND(a__isNat(N), a__isNatIList(IL))
A__ISNATLIST(cons(N, L)) → A__AND(a__isNat(N), a__isNatList(L))
MARK(uTake1(X)) → MARK(X)
A__ISNAT(length(L)) → A__ISNATLIST(L)
A__ISNATLIST(take(N, IL)) → A__ISNAT(N)
A__ISNATILIST(cons(N, IL)) → A__ISNAT(N)
MARK(isNat(X)) → A__ISNAT(X)
MARK(and(X1, X2)) → A__AND(mark(X1), mark(X2))
MARK(isNatList(X)) → A__ISNATLIST(X)
A__ISNATLIST(take(N, IL)) → A__ISNATILIST(IL)

The TRS R consists of the following rules:

a__and(tt, T) → mark(T)
a__isNatIList(IL) → a__isNatList(IL)
a__isNat(0) → tt
a__isNat(s(N)) → a__isNat(N)
a__isNat(length(L)) → a__isNatList(L)
a__isNatIList(zeros) → tt
a__isNatIList(cons(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__isNatList(nil) → tt
a__isNatList(cons(N, L)) → a__and(a__isNat(N), a__isNatList(L))
a__isNatList(take(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__zeroscons(0, zeros)
a__take(0, IL) → a__uTake1(a__isNatIList(IL))
a__uTake1(tt) → nil
a__take(s(M), cons(N, IL)) → a__uTake2(a__and(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL))), M, N, IL)
a__uTake2(tt, M, N, IL) → cons(mark(N), take(M, IL))
a__length(cons(N, L)) → a__uLength(a__and(a__isNat(N), a__isNatList(L)), L)
a__uLength(tt, L) → s(a__length(mark(L)))
mark(and(X1, X2)) → a__and(mark(X1), mark(X2))
mark(isNatIList(X)) → a__isNatIList(X)
mark(isNatList(X)) → a__isNatList(X)
mark(isNat(X)) → a__isNat(X)
mark(length(X)) → a__length(mark(X))
mark(zeros) → a__zeros
mark(take(X1, X2)) → a__take(mark(X1), mark(X2))
mark(uTake1(X)) → a__uTake1(mark(X))
mark(uTake2(X1, X2, X3, X4)) → a__uTake2(mark(X1), X2, X3, X4)
mark(uLength(X1, X2)) → a__uLength(mark(X1), X2)
mark(tt) → tt
mark(0) → 0
mark(s(X)) → s(mark(X))
mark(cons(X1, X2)) → cons(mark(X1), X2)
mark(nil) → nil
a__and(X1, X2) → and(X1, X2)
a__isNatIList(X) → isNatIList(X)
a__isNatList(X) → isNatList(X)
a__isNat(X) → isNat(X)
a__length(X) → length(X)
a__zeroszeros
a__take(X1, X2) → take(X1, X2)
a__uTake1(X) → uTake1(X)
a__uTake2(X1, X2, X3, X4) → uTake2(X1, X2, X3, X4)
a__uLength(X1, X2) → uLength(X1, X2)

Q is empty.
We have to consider all minimal (P,Q,R)-chains.
We use the reduction pair processor [15].


The following pairs can be oriented strictly and are deleted.


A__TAKE(0, IL) → A__ISNATILIST(IL)
The remaining pairs can at least be oriented weakly.

MARK(take(X1, X2)) → MARK(X2)
A__ISNATLIST(cons(N, L)) → A__ISNATLIST(L)
MARK(s(X)) → MARK(X)
A__ISNATILIST(cons(N, IL)) → A__ISNATILIST(IL)
MARK(isNatIList(X)) → A__ISNATILIST(X)
A__AND(tt, T) → MARK(T)
MARK(and(X1, X2)) → MARK(X1)
MARK(take(X1, X2)) → MARK(X1)
A__ISNATLIST(cons(N, L)) → A__ISNAT(N)
A__ISNATILIST(IL) → A__ISNATLIST(IL)
MARK(and(X1, X2)) → MARK(X2)
MARK(take(X1, X2)) → A__TAKE(mark(X1), mark(X2))
A__ISNAT(s(N)) → A__ISNAT(N)
A__ISNATLIST(take(N, IL)) → A__AND(a__isNat(N), a__isNatIList(IL))
A__ISNATILIST(cons(N, IL)) → A__AND(a__isNat(N), a__isNatIList(IL))
A__ISNATLIST(cons(N, L)) → A__AND(a__isNat(N), a__isNatList(L))
MARK(uTake1(X)) → MARK(X)
A__ISNAT(length(L)) → A__ISNATLIST(L)
A__ISNATLIST(take(N, IL)) → A__ISNAT(N)
A__ISNATILIST(cons(N, IL)) → A__ISNAT(N)
MARK(isNat(X)) → A__ISNAT(X)
MARK(and(X1, X2)) → A__AND(mark(X1), mark(X2))
MARK(isNatList(X)) → A__ISNATLIST(X)
A__ISNATLIST(take(N, IL)) → A__ISNATILIST(IL)
Used ordering: Polynomial interpretation with max and min functions [25]:

POL(0) = 1   
POL(A__AND(x1, x2)) = x2   
POL(A__ISNAT(x1)) = 0   
POL(A__ISNATILIST(x1)) = 0   
POL(A__ISNATLIST(x1)) = 0   
POL(A__TAKE(x1, x2)) = x1   
POL(MARK(x1)) = x1   
POL(a__and(x1, x2)) = x1 + x2   
POL(a__isNat(x1)) = 0   
POL(a__isNatIList(x1)) = 0   
POL(a__isNatList(x1)) = 0   
POL(a__length(x1)) = 0   
POL(a__take(x1, x2)) = x1 + x2   
POL(a__uLength(x1, x2)) = 0   
POL(a__uTake1(x1)) = x1   
POL(a__uTake2(x1, x2, x3, x4)) = x1   
POL(a__zeros) = 0   
POL(and(x1, x2)) = x1 + x2   
POL(cons(x1, x2)) = 0   
POL(isNat(x1)) = 0   
POL(isNatIList(x1)) = 0   
POL(isNatList(x1)) = 0   
POL(length(x1)) = 0   
POL(mark(x1)) = x1   
POL(nil) = 0   
POL(s(x1)) = x1   
POL(take(x1, x2)) = x1 + x2   
POL(tt) = 0   
POL(uLength(x1, x2)) = 0   
POL(uTake1(x1)) = x1   
POL(uTake2(x1, x2, x3, x4)) = x1   
POL(zeros) = 0   

The following usable rules [17] were oriented:

mark(nil) → nil
mark(cons(X1, X2)) → cons(mark(X1), X2)
a__isNatIList(X) → isNatIList(X)
a__and(X1, X2) → and(X1, X2)
a__isNat(X) → isNat(X)
a__isNatList(X) → isNatList(X)
a__zeroszeros
a__length(X) → length(X)
mark(take(X1, X2)) → a__take(mark(X1), mark(X2))
mark(zeros) → a__zeros
mark(uTake2(X1, X2, X3, X4)) → a__uTake2(mark(X1), X2, X3, X4)
mark(uTake1(X)) → a__uTake1(mark(X))
mark(tt) → tt
mark(uLength(X1, X2)) → a__uLength(mark(X1), X2)
mark(s(X)) → s(mark(X))
mark(0) → 0
a__take(X1, X2) → take(X1, X2)
a__uTake1(X) → uTake1(X)
a__uTake2(X1, X2, X3, X4) → uTake2(X1, X2, X3, X4)
a__uLength(X1, X2) → uLength(X1, X2)
a__isNatIList(zeros) → tt
a__isNat(0) → tt
a__take(s(M), cons(N, IL)) → a__uTake2(a__and(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL))), M, N, IL)
a__uTake1(tt) → nil
a__take(0, IL) → a__uTake1(a__isNatIList(IL))
a__zeroscons(0, zeros)
a__isNatList(nil) → tt
mark(length(X)) → a__length(mark(X))
a__isNatIList(IL) → a__isNatList(IL)
mark(isNat(X)) → a__isNat(X)
a__isNat(s(N)) → a__isNat(N)
a__and(tt, T) → mark(T)
mark(isNatList(X)) → a__isNatList(X)
a__isNatIList(cons(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
mark(isNatIList(X)) → a__isNatIList(X)
a__isNat(length(L)) → a__isNatList(L)
mark(and(X1, X2)) → a__and(mark(X1), mark(X2))
a__isNatList(cons(N, L)) → a__and(a__isNat(N), a__isNatList(L))
a__isNatList(take(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__uLength(tt, L) → s(a__length(mark(L)))
a__length(cons(N, L)) → a__uLength(a__and(a__isNat(N), a__isNatList(L)), L)
a__uTake2(tt, M, N, IL) → cons(mark(N), take(M, IL))



↳ QTRS
  ↳ DependencyPairsProof
    ↳ QDP
      ↳ DependencyGraphProof
        ↳ QDP
          ↳ QDPOrderProof
            ↳ QDP
              ↳ DependencyGraphProof
                ↳ AND
                  ↳ QDP
                    ↳ QDPOrderProof
                      ↳ QDP
                        ↳ DependencyGraphProof
                          ↳ QDP
                            ↳ QDPOrderProof
QDP
                                ↳ DependencyGraphProof
                  ↳ QDP

Q DP problem:
The TRS P consists of the following rules:

MARK(take(X1, X2)) → MARK(X2)
A__ISNATLIST(cons(N, L)) → A__ISNATLIST(L)
MARK(take(X1, X2)) → A__TAKE(mark(X1), mark(X2))
MARK(s(X)) → MARK(X)
A__ISNATILIST(cons(N, IL)) → A__ISNATILIST(IL)
MARK(isNatIList(X)) → A__ISNATILIST(X)
A__ISNAT(s(N)) → A__ISNAT(N)
A__ISNATILIST(cons(N, IL)) → A__AND(a__isNat(N), a__isNatIList(IL))
A__ISNATLIST(take(N, IL)) → A__AND(a__isNat(N), a__isNatIList(IL))
A__AND(tt, T) → MARK(T)
A__ISNATLIST(cons(N, L)) → A__AND(a__isNat(N), a__isNatList(L))
MARK(uTake1(X)) → MARK(X)
MARK(and(X1, X2)) → MARK(X1)
MARK(take(X1, X2)) → MARK(X1)
A__ISNAT(length(L)) → A__ISNATLIST(L)
MARK(isNat(X)) → A__ISNAT(X)
A__ISNATILIST(cons(N, IL)) → A__ISNAT(N)
A__ISNATLIST(take(N, IL)) → A__ISNAT(N)
A__ISNATLIST(cons(N, L)) → A__ISNAT(N)
MARK(isNatList(X)) → A__ISNATLIST(X)
MARK(and(X1, X2)) → A__AND(mark(X1), mark(X2))
A__ISNATLIST(take(N, IL)) → A__ISNATILIST(IL)
A__ISNATILIST(IL) → A__ISNATLIST(IL)
MARK(and(X1, X2)) → MARK(X2)

The TRS R consists of the following rules:

a__and(tt, T) → mark(T)
a__isNatIList(IL) → a__isNatList(IL)
a__isNat(0) → tt
a__isNat(s(N)) → a__isNat(N)
a__isNat(length(L)) → a__isNatList(L)
a__isNatIList(zeros) → tt
a__isNatIList(cons(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__isNatList(nil) → tt
a__isNatList(cons(N, L)) → a__and(a__isNat(N), a__isNatList(L))
a__isNatList(take(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__zeroscons(0, zeros)
a__take(0, IL) → a__uTake1(a__isNatIList(IL))
a__uTake1(tt) → nil
a__take(s(M), cons(N, IL)) → a__uTake2(a__and(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL))), M, N, IL)
a__uTake2(tt, M, N, IL) → cons(mark(N), take(M, IL))
a__length(cons(N, L)) → a__uLength(a__and(a__isNat(N), a__isNatList(L)), L)
a__uLength(tt, L) → s(a__length(mark(L)))
mark(and(X1, X2)) → a__and(mark(X1), mark(X2))
mark(isNatIList(X)) → a__isNatIList(X)
mark(isNatList(X)) → a__isNatList(X)
mark(isNat(X)) → a__isNat(X)
mark(length(X)) → a__length(mark(X))
mark(zeros) → a__zeros
mark(take(X1, X2)) → a__take(mark(X1), mark(X2))
mark(uTake1(X)) → a__uTake1(mark(X))
mark(uTake2(X1, X2, X3, X4)) → a__uTake2(mark(X1), X2, X3, X4)
mark(uLength(X1, X2)) → a__uLength(mark(X1), X2)
mark(tt) → tt
mark(0) → 0
mark(s(X)) → s(mark(X))
mark(cons(X1, X2)) → cons(mark(X1), X2)
mark(nil) → nil
a__and(X1, X2) → and(X1, X2)
a__isNatIList(X) → isNatIList(X)
a__isNatList(X) → isNatList(X)
a__isNat(X) → isNat(X)
a__length(X) → length(X)
a__zeroszeros
a__take(X1, X2) → take(X1, X2)
a__uTake1(X) → uTake1(X)
a__uTake2(X1, X2, X3, X4) → uTake2(X1, X2, X3, X4)
a__uLength(X1, X2) → uLength(X1, X2)

Q is empty.
We have to consider all minimal (P,Q,R)-chains.
The approximation of the Dependency Graph [15,17,22] contains 1 SCC with 1 less node.

↳ QTRS
  ↳ DependencyPairsProof
    ↳ QDP
      ↳ DependencyGraphProof
        ↳ QDP
          ↳ QDPOrderProof
            ↳ QDP
              ↳ DependencyGraphProof
                ↳ AND
                  ↳ QDP
                    ↳ QDPOrderProof
                      ↳ QDP
                        ↳ DependencyGraphProof
                          ↳ QDP
                            ↳ QDPOrderProof
                              ↳ QDP
                                ↳ DependencyGraphProof
QDP
                                    ↳ QDPOrderProof
                  ↳ QDP

Q DP problem:
The TRS P consists of the following rules:

MARK(take(X1, X2)) → MARK(X2)
A__ISNATLIST(cons(N, L)) → A__ISNATLIST(L)
MARK(s(X)) → MARK(X)
A__ISNATILIST(cons(N, IL)) → A__ISNATILIST(IL)
MARK(isNatIList(X)) → A__ISNATILIST(X)
A__ISNAT(s(N)) → A__ISNAT(N)
A__ISNATILIST(cons(N, IL)) → A__AND(a__isNat(N), a__isNatIList(IL))
A__AND(tt, T) → MARK(T)
A__ISNATLIST(take(N, IL)) → A__AND(a__isNat(N), a__isNatIList(IL))
A__ISNATLIST(cons(N, L)) → A__AND(a__isNat(N), a__isNatList(L))
MARK(uTake1(X)) → MARK(X)
MARK(and(X1, X2)) → MARK(X1)
MARK(take(X1, X2)) → MARK(X1)
A__ISNAT(length(L)) → A__ISNATLIST(L)
MARK(isNat(X)) → A__ISNAT(X)
A__ISNATILIST(cons(N, IL)) → A__ISNAT(N)
A__ISNATLIST(cons(N, L)) → A__ISNAT(N)
A__ISNATLIST(take(N, IL)) → A__ISNAT(N)
MARK(isNatList(X)) → A__ISNATLIST(X)
MARK(and(X1, X2)) → A__AND(mark(X1), mark(X2))
A__ISNATLIST(take(N, IL)) → A__ISNATILIST(IL)
MARK(and(X1, X2)) → MARK(X2)
A__ISNATILIST(IL) → A__ISNATLIST(IL)

The TRS R consists of the following rules:

a__and(tt, T) → mark(T)
a__isNatIList(IL) → a__isNatList(IL)
a__isNat(0) → tt
a__isNat(s(N)) → a__isNat(N)
a__isNat(length(L)) → a__isNatList(L)
a__isNatIList(zeros) → tt
a__isNatIList(cons(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__isNatList(nil) → tt
a__isNatList(cons(N, L)) → a__and(a__isNat(N), a__isNatList(L))
a__isNatList(take(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__zeroscons(0, zeros)
a__take(0, IL) → a__uTake1(a__isNatIList(IL))
a__uTake1(tt) → nil
a__take(s(M), cons(N, IL)) → a__uTake2(a__and(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL))), M, N, IL)
a__uTake2(tt, M, N, IL) → cons(mark(N), take(M, IL))
a__length(cons(N, L)) → a__uLength(a__and(a__isNat(N), a__isNatList(L)), L)
a__uLength(tt, L) → s(a__length(mark(L)))
mark(and(X1, X2)) → a__and(mark(X1), mark(X2))
mark(isNatIList(X)) → a__isNatIList(X)
mark(isNatList(X)) → a__isNatList(X)
mark(isNat(X)) → a__isNat(X)
mark(length(X)) → a__length(mark(X))
mark(zeros) → a__zeros
mark(take(X1, X2)) → a__take(mark(X1), mark(X2))
mark(uTake1(X)) → a__uTake1(mark(X))
mark(uTake2(X1, X2, X3, X4)) → a__uTake2(mark(X1), X2, X3, X4)
mark(uLength(X1, X2)) → a__uLength(mark(X1), X2)
mark(tt) → tt
mark(0) → 0
mark(s(X)) → s(mark(X))
mark(cons(X1, X2)) → cons(mark(X1), X2)
mark(nil) → nil
a__and(X1, X2) → and(X1, X2)
a__isNatIList(X) → isNatIList(X)
a__isNatList(X) → isNatList(X)
a__isNat(X) → isNat(X)
a__length(X) → length(X)
a__zeroszeros
a__take(X1, X2) → take(X1, X2)
a__uTake1(X) → uTake1(X)
a__uTake2(X1, X2, X3, X4) → uTake2(X1, X2, X3, X4)
a__uLength(X1, X2) → uLength(X1, X2)

Q is empty.
We have to consider all minimal (P,Q,R)-chains.
We use the reduction pair processor [15].


The following pairs can be oriented strictly and are deleted.


MARK(take(X1, X2)) → MARK(X2)
MARK(take(X1, X2)) → MARK(X1)
The remaining pairs can at least be oriented weakly.

A__ISNATLIST(cons(N, L)) → A__ISNATLIST(L)
MARK(s(X)) → MARK(X)
A__ISNATILIST(cons(N, IL)) → A__ISNATILIST(IL)
MARK(isNatIList(X)) → A__ISNATILIST(X)
A__ISNAT(s(N)) → A__ISNAT(N)
A__ISNATILIST(cons(N, IL)) → A__AND(a__isNat(N), a__isNatIList(IL))
A__AND(tt, T) → MARK(T)
A__ISNATLIST(take(N, IL)) → A__AND(a__isNat(N), a__isNatIList(IL))
A__ISNATLIST(cons(N, L)) → A__AND(a__isNat(N), a__isNatList(L))
MARK(uTake1(X)) → MARK(X)
MARK(and(X1, X2)) → MARK(X1)
A__ISNAT(length(L)) → A__ISNATLIST(L)
MARK(isNat(X)) → A__ISNAT(X)
A__ISNATILIST(cons(N, IL)) → A__ISNAT(N)
A__ISNATLIST(cons(N, L)) → A__ISNAT(N)
A__ISNATLIST(take(N, IL)) → A__ISNAT(N)
MARK(isNatList(X)) → A__ISNATLIST(X)
MARK(and(X1, X2)) → A__AND(mark(X1), mark(X2))
A__ISNATLIST(take(N, IL)) → A__ISNATILIST(IL)
MARK(and(X1, X2)) → MARK(X2)
A__ISNATILIST(IL) → A__ISNATLIST(IL)
Used ordering: Polynomial interpretation with max and min functions [25]:

POL(0) = 0   
POL(A__AND(x1, x2)) = x2   
POL(A__ISNAT(x1)) = 0   
POL(A__ISNATILIST(x1)) = 0   
POL(A__ISNATLIST(x1)) = 0   
POL(MARK(x1)) = x1   
POL(a__and(x1, x2)) = x1 + x2   
POL(a__isNat(x1)) = 0   
POL(a__isNatIList(x1)) = 0   
POL(a__isNatList(x1)) = 0   
POL(a__length(x1)) = 0   
POL(a__take(x1, x2)) = 1 + x1 + x2   
POL(a__uLength(x1, x2)) = x1   
POL(a__uTake1(x1)) = x1   
POL(a__uTake2(x1, x2, x3, x4)) = 0   
POL(a__zeros) = 0   
POL(and(x1, x2)) = x1 + x2   
POL(cons(x1, x2)) = 0   
POL(isNat(x1)) = 0   
POL(isNatIList(x1)) = 0   
POL(isNatList(x1)) = 0   
POL(length(x1)) = 0   
POL(mark(x1)) = x1   
POL(nil) = 0   
POL(s(x1)) = x1   
POL(take(x1, x2)) = 1 + x1 + x2   
POL(tt) = 0   
POL(uLength(x1, x2)) = x1   
POL(uTake1(x1)) = x1   
POL(uTake2(x1, x2, x3, x4)) = 0   
POL(zeros) = 0   

The following usable rules [17] were oriented:

mark(nil) → nil
mark(cons(X1, X2)) → cons(mark(X1), X2)
a__isNatIList(X) → isNatIList(X)
a__and(X1, X2) → and(X1, X2)
a__isNat(X) → isNat(X)
a__isNatList(X) → isNatList(X)
a__zeroszeros
a__length(X) → length(X)
mark(take(X1, X2)) → a__take(mark(X1), mark(X2))
mark(zeros) → a__zeros
mark(uTake2(X1, X2, X3, X4)) → a__uTake2(mark(X1), X2, X3, X4)
mark(uTake1(X)) → a__uTake1(mark(X))
mark(tt) → tt
mark(uLength(X1, X2)) → a__uLength(mark(X1), X2)
mark(s(X)) → s(mark(X))
mark(0) → 0
a__take(X1, X2) → take(X1, X2)
a__uTake1(X) → uTake1(X)
a__uTake2(X1, X2, X3, X4) → uTake2(X1, X2, X3, X4)
a__uLength(X1, X2) → uLength(X1, X2)
a__isNatIList(zeros) → tt
a__isNat(0) → tt
a__take(s(M), cons(N, IL)) → a__uTake2(a__and(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL))), M, N, IL)
a__uTake1(tt) → nil
a__take(0, IL) → a__uTake1(a__isNatIList(IL))
a__zeroscons(0, zeros)
a__isNatList(nil) → tt
mark(length(X)) → a__length(mark(X))
a__isNatIList(IL) → a__isNatList(IL)
mark(isNat(X)) → a__isNat(X)
a__isNat(s(N)) → a__isNat(N)
a__and(tt, T) → mark(T)
mark(isNatList(X)) → a__isNatList(X)
a__isNatIList(cons(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
mark(isNatIList(X)) → a__isNatIList(X)
a__isNat(length(L)) → a__isNatList(L)
mark(and(X1, X2)) → a__and(mark(X1), mark(X2))
a__isNatList(cons(N, L)) → a__and(a__isNat(N), a__isNatList(L))
a__isNatList(take(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__uLength(tt, L) → s(a__length(mark(L)))
a__length(cons(N, L)) → a__uLength(a__and(a__isNat(N), a__isNatList(L)), L)
a__uTake2(tt, M, N, IL) → cons(mark(N), take(M, IL))



↳ QTRS
  ↳ DependencyPairsProof
    ↳ QDP
      ↳ DependencyGraphProof
        ↳ QDP
          ↳ QDPOrderProof
            ↳ QDP
              ↳ DependencyGraphProof
                ↳ AND
                  ↳ QDP
                    ↳ QDPOrderProof
                      ↳ QDP
                        ↳ DependencyGraphProof
                          ↳ QDP
                            ↳ QDPOrderProof
                              ↳ QDP
                                ↳ DependencyGraphProof
                                  ↳ QDP
                                    ↳ QDPOrderProof
QDP
                                        ↳ QDPOrderProof
                  ↳ QDP

Q DP problem:
The TRS P consists of the following rules:

A__ISNATLIST(cons(N, L)) → A__ISNATLIST(L)
MARK(s(X)) → MARK(X)
A__ISNATILIST(cons(N, IL)) → A__ISNATILIST(IL)
MARK(isNatIList(X)) → A__ISNATILIST(X)
A__ISNAT(s(N)) → A__ISNAT(N)
A__ISNATILIST(cons(N, IL)) → A__AND(a__isNat(N), a__isNatIList(IL))
A__AND(tt, T) → MARK(T)
A__ISNATLIST(take(N, IL)) → A__AND(a__isNat(N), a__isNatIList(IL))
A__ISNATLIST(cons(N, L)) → A__AND(a__isNat(N), a__isNatList(L))
MARK(uTake1(X)) → MARK(X)
MARK(and(X1, X2)) → MARK(X1)
A__ISNAT(length(L)) → A__ISNATLIST(L)
A__ISNATLIST(take(N, IL)) → A__ISNAT(N)
A__ISNATLIST(cons(N, L)) → A__ISNAT(N)
A__ISNATILIST(cons(N, IL)) → A__ISNAT(N)
MARK(isNat(X)) → A__ISNAT(X)
MARK(and(X1, X2)) → A__AND(mark(X1), mark(X2))
MARK(isNatList(X)) → A__ISNATLIST(X)
A__ISNATLIST(take(N, IL)) → A__ISNATILIST(IL)
A__ISNATILIST(IL) → A__ISNATLIST(IL)
MARK(and(X1, X2)) → MARK(X2)

The TRS R consists of the following rules:

a__and(tt, T) → mark(T)
a__isNatIList(IL) → a__isNatList(IL)
a__isNat(0) → tt
a__isNat(s(N)) → a__isNat(N)
a__isNat(length(L)) → a__isNatList(L)
a__isNatIList(zeros) → tt
a__isNatIList(cons(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__isNatList(nil) → tt
a__isNatList(cons(N, L)) → a__and(a__isNat(N), a__isNatList(L))
a__isNatList(take(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__zeroscons(0, zeros)
a__take(0, IL) → a__uTake1(a__isNatIList(IL))
a__uTake1(tt) → nil
a__take(s(M), cons(N, IL)) → a__uTake2(a__and(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL))), M, N, IL)
a__uTake2(tt, M, N, IL) → cons(mark(N), take(M, IL))
a__length(cons(N, L)) → a__uLength(a__and(a__isNat(N), a__isNatList(L)), L)
a__uLength(tt, L) → s(a__length(mark(L)))
mark(and(X1, X2)) → a__and(mark(X1), mark(X2))
mark(isNatIList(X)) → a__isNatIList(X)
mark(isNatList(X)) → a__isNatList(X)
mark(isNat(X)) → a__isNat(X)
mark(length(X)) → a__length(mark(X))
mark(zeros) → a__zeros
mark(take(X1, X2)) → a__take(mark(X1), mark(X2))
mark(uTake1(X)) → a__uTake1(mark(X))
mark(uTake2(X1, X2, X3, X4)) → a__uTake2(mark(X1), X2, X3, X4)
mark(uLength(X1, X2)) → a__uLength(mark(X1), X2)
mark(tt) → tt
mark(0) → 0
mark(s(X)) → s(mark(X))
mark(cons(X1, X2)) → cons(mark(X1), X2)
mark(nil) → nil
a__and(X1, X2) → and(X1, X2)
a__isNatIList(X) → isNatIList(X)
a__isNatList(X) → isNatList(X)
a__isNat(X) → isNat(X)
a__length(X) → length(X)
a__zeroszeros
a__take(X1, X2) → take(X1, X2)
a__uTake1(X) → uTake1(X)
a__uTake2(X1, X2, X3, X4) → uTake2(X1, X2, X3, X4)
a__uLength(X1, X2) → uLength(X1, X2)

Q is empty.
We have to consider all minimal (P,Q,R)-chains.
We use the reduction pair processor [15].


The following pairs can be oriented strictly and are deleted.


A__ISNATLIST(take(N, IL)) → A__AND(a__isNat(N), a__isNatIList(IL))
MARK(uTake1(X)) → MARK(X)
A__ISNATLIST(take(N, IL)) → A__ISNAT(N)
A__ISNATLIST(take(N, IL)) → A__ISNATILIST(IL)
The remaining pairs can at least be oriented weakly.

A__ISNATLIST(cons(N, L)) → A__ISNATLIST(L)
MARK(s(X)) → MARK(X)
A__ISNATILIST(cons(N, IL)) → A__ISNATILIST(IL)
MARK(isNatIList(X)) → A__ISNATILIST(X)
A__ISNAT(s(N)) → A__ISNAT(N)
A__ISNATILIST(cons(N, IL)) → A__AND(a__isNat(N), a__isNatIList(IL))
A__AND(tt, T) → MARK(T)
A__ISNATLIST(cons(N, L)) → A__AND(a__isNat(N), a__isNatList(L))
MARK(and(X1, X2)) → MARK(X1)
A__ISNAT(length(L)) → A__ISNATLIST(L)
A__ISNATLIST(cons(N, L)) → A__ISNAT(N)
A__ISNATILIST(cons(N, IL)) → A__ISNAT(N)
MARK(isNat(X)) → A__ISNAT(X)
MARK(and(X1, X2)) → A__AND(mark(X1), mark(X2))
MARK(isNatList(X)) → A__ISNATLIST(X)
A__ISNATILIST(IL) → A__ISNATLIST(IL)
MARK(and(X1, X2)) → MARK(X2)
Used ordering: Polynomial interpretation [25]:

POL(0) = 0   
POL(A__AND(x1, x2)) = x2   
POL(A__ISNAT(x1)) = x1   
POL(A__ISNATILIST(x1)) = x1   
POL(A__ISNATLIST(x1)) = x1   
POL(MARK(x1)) = x1   
POL(a__and(x1, x2)) = x1 + x2   
POL(a__isNat(x1)) = x1   
POL(a__isNatIList(x1)) = x1   
POL(a__isNatList(x1)) = x1   
POL(a__length(x1)) = x1   
POL(a__take(x1, x2)) = 1 + x1 + x2   
POL(a__uLength(x1, x2)) = x2   
POL(a__uTake1(x1)) = 1 + x1   
POL(a__uTake2(x1, x2, x3, x4)) = 1 + x2 + x3 + x4   
POL(a__zeros) = 0   
POL(and(x1, x2)) = x1 + x2   
POL(cons(x1, x2)) = x1 + x2   
POL(isNat(x1)) = x1   
POL(isNatIList(x1)) = x1   
POL(isNatList(x1)) = x1   
POL(length(x1)) = x1   
POL(mark(x1)) = x1   
POL(nil) = 1   
POL(s(x1)) = x1   
POL(take(x1, x2)) = 1 + x1 + x2   
POL(tt) = 0   
POL(uLength(x1, x2)) = x2   
POL(uTake1(x1)) = 1 + x1   
POL(uTake2(x1, x2, x3, x4)) = 1 + x2 + x3 + x4   
POL(zeros) = 0   

The following usable rules [17] were oriented:

mark(nil) → nil
mark(cons(X1, X2)) → cons(mark(X1), X2)
a__isNatIList(X) → isNatIList(X)
a__and(X1, X2) → and(X1, X2)
a__isNat(X) → isNat(X)
a__isNatList(X) → isNatList(X)
a__zeroszeros
a__length(X) → length(X)
mark(take(X1, X2)) → a__take(mark(X1), mark(X2))
mark(zeros) → a__zeros
mark(uTake2(X1, X2, X3, X4)) → a__uTake2(mark(X1), X2, X3, X4)
mark(uTake1(X)) → a__uTake1(mark(X))
mark(tt) → tt
mark(uLength(X1, X2)) → a__uLength(mark(X1), X2)
mark(s(X)) → s(mark(X))
mark(0) → 0
a__take(X1, X2) → take(X1, X2)
a__uTake1(X) → uTake1(X)
a__uTake2(X1, X2, X3, X4) → uTake2(X1, X2, X3, X4)
a__uLength(X1, X2) → uLength(X1, X2)
a__isNatIList(zeros) → tt
a__isNat(0) → tt
a__take(s(M), cons(N, IL)) → a__uTake2(a__and(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL))), M, N, IL)
a__uTake1(tt) → nil
a__take(0, IL) → a__uTake1(a__isNatIList(IL))
a__zeroscons(0, zeros)
a__isNatList(nil) → tt
mark(length(X)) → a__length(mark(X))
a__isNatIList(IL) → a__isNatList(IL)
mark(isNat(X)) → a__isNat(X)
a__isNat(s(N)) → a__isNat(N)
a__and(tt, T) → mark(T)
mark(isNatList(X)) → a__isNatList(X)
a__isNatIList(cons(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
mark(isNatIList(X)) → a__isNatIList(X)
a__isNat(length(L)) → a__isNatList(L)
mark(and(X1, X2)) → a__and(mark(X1), mark(X2))
a__isNatList(cons(N, L)) → a__and(a__isNat(N), a__isNatList(L))
a__isNatList(take(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__uLength(tt, L) → s(a__length(mark(L)))
a__length(cons(N, L)) → a__uLength(a__and(a__isNat(N), a__isNatList(L)), L)
a__uTake2(tt, M, N, IL) → cons(mark(N), take(M, IL))



↳ QTRS
  ↳ DependencyPairsProof
    ↳ QDP
      ↳ DependencyGraphProof
        ↳ QDP
          ↳ QDPOrderProof
            ↳ QDP
              ↳ DependencyGraphProof
                ↳ AND
                  ↳ QDP
                    ↳ QDPOrderProof
                      ↳ QDP
                        ↳ DependencyGraphProof
                          ↳ QDP
                            ↳ QDPOrderProof
                              ↳ QDP
                                ↳ DependencyGraphProof
                                  ↳ QDP
                                    ↳ QDPOrderProof
                                      ↳ QDP
                                        ↳ QDPOrderProof
QDP
                                            ↳ QDPOrderProof
                  ↳ QDP

Q DP problem:
The TRS P consists of the following rules:

A__ISNATLIST(cons(N, L)) → A__ISNATLIST(L)
MARK(s(X)) → MARK(X)
A__ISNATILIST(cons(N, IL)) → A__ISNATILIST(IL)
MARK(isNatIList(X)) → A__ISNATILIST(X)
A__ISNAT(s(N)) → A__ISNAT(N)
A__ISNATILIST(cons(N, IL)) → A__AND(a__isNat(N), a__isNatIList(IL))
A__AND(tt, T) → MARK(T)
A__ISNATLIST(cons(N, L)) → A__AND(a__isNat(N), a__isNatList(L))
MARK(and(X1, X2)) → MARK(X1)
A__ISNAT(length(L)) → A__ISNATLIST(L)
A__ISNATLIST(cons(N, L)) → A__ISNAT(N)
A__ISNATILIST(cons(N, IL)) → A__ISNAT(N)
MARK(isNat(X)) → A__ISNAT(X)
MARK(isNatList(X)) → A__ISNATLIST(X)
MARK(and(X1, X2)) → A__AND(mark(X1), mark(X2))
MARK(and(X1, X2)) → MARK(X2)
A__ISNATILIST(IL) → A__ISNATLIST(IL)

The TRS R consists of the following rules:

a__and(tt, T) → mark(T)
a__isNatIList(IL) → a__isNatList(IL)
a__isNat(0) → tt
a__isNat(s(N)) → a__isNat(N)
a__isNat(length(L)) → a__isNatList(L)
a__isNatIList(zeros) → tt
a__isNatIList(cons(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__isNatList(nil) → tt
a__isNatList(cons(N, L)) → a__and(a__isNat(N), a__isNatList(L))
a__isNatList(take(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__zeroscons(0, zeros)
a__take(0, IL) → a__uTake1(a__isNatIList(IL))
a__uTake1(tt) → nil
a__take(s(M), cons(N, IL)) → a__uTake2(a__and(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL))), M, N, IL)
a__uTake2(tt, M, N, IL) → cons(mark(N), take(M, IL))
a__length(cons(N, L)) → a__uLength(a__and(a__isNat(N), a__isNatList(L)), L)
a__uLength(tt, L) → s(a__length(mark(L)))
mark(and(X1, X2)) → a__and(mark(X1), mark(X2))
mark(isNatIList(X)) → a__isNatIList(X)
mark(isNatList(X)) → a__isNatList(X)
mark(isNat(X)) → a__isNat(X)
mark(length(X)) → a__length(mark(X))
mark(zeros) → a__zeros
mark(take(X1, X2)) → a__take(mark(X1), mark(X2))
mark(uTake1(X)) → a__uTake1(mark(X))
mark(uTake2(X1, X2, X3, X4)) → a__uTake2(mark(X1), X2, X3, X4)
mark(uLength(X1, X2)) → a__uLength(mark(X1), X2)
mark(tt) → tt
mark(0) → 0
mark(s(X)) → s(mark(X))
mark(cons(X1, X2)) → cons(mark(X1), X2)
mark(nil) → nil
a__and(X1, X2) → and(X1, X2)
a__isNatIList(X) → isNatIList(X)
a__isNatList(X) → isNatList(X)
a__isNat(X) → isNat(X)
a__length(X) → length(X)
a__zeroszeros
a__take(X1, X2) → take(X1, X2)
a__uTake1(X) → uTake1(X)
a__uTake2(X1, X2, X3, X4) → uTake2(X1, X2, X3, X4)
a__uLength(X1, X2) → uLength(X1, X2)

Q is empty.
We have to consider all minimal (P,Q,R)-chains.
We use the reduction pair processor [15].


The following pairs can be oriented strictly and are deleted.


A__ISNAT(length(L)) → A__ISNATLIST(L)
The remaining pairs can at least be oriented weakly.

A__ISNATLIST(cons(N, L)) → A__ISNATLIST(L)
MARK(s(X)) → MARK(X)
A__ISNATILIST(cons(N, IL)) → A__ISNATILIST(IL)
MARK(isNatIList(X)) → A__ISNATILIST(X)
A__ISNAT(s(N)) → A__ISNAT(N)
A__ISNATILIST(cons(N, IL)) → A__AND(a__isNat(N), a__isNatIList(IL))
A__AND(tt, T) → MARK(T)
A__ISNATLIST(cons(N, L)) → A__AND(a__isNat(N), a__isNatList(L))
MARK(and(X1, X2)) → MARK(X1)
A__ISNATLIST(cons(N, L)) → A__ISNAT(N)
A__ISNATILIST(cons(N, IL)) → A__ISNAT(N)
MARK(isNat(X)) → A__ISNAT(X)
MARK(isNatList(X)) → A__ISNATLIST(X)
MARK(and(X1, X2)) → A__AND(mark(X1), mark(X2))
MARK(and(X1, X2)) → MARK(X2)
A__ISNATILIST(IL) → A__ISNATLIST(IL)
Used ordering: Polynomial interpretation [25]:

POL(0) = 0   
POL(A__AND(x1, x2)) = x2   
POL(A__ISNAT(x1)) = x1   
POL(A__ISNATILIST(x1)) = x1   
POL(A__ISNATLIST(x1)) = x1   
POL(MARK(x1)) = x1   
POL(a__and(x1, x2)) = x1 + x2   
POL(a__isNat(x1)) = x1   
POL(a__isNatIList(x1)) = x1   
POL(a__isNatList(x1)) = x1   
POL(a__length(x1)) = 1 + x1   
POL(a__take(x1, x2)) = x1 + x2   
POL(a__uLength(x1, x2)) = 1 + x2   
POL(a__uTake1(x1)) = 0   
POL(a__uTake2(x1, x2, x3, x4)) = x2 + x3 + x4   
POL(a__zeros) = 0   
POL(and(x1, x2)) = x1 + x2   
POL(cons(x1, x2)) = x1 + x2   
POL(isNat(x1)) = x1   
POL(isNatIList(x1)) = x1   
POL(isNatList(x1)) = x1   
POL(length(x1)) = 1 + x1   
POL(mark(x1)) = x1   
POL(nil) = 0   
POL(s(x1)) = x1   
POL(take(x1, x2)) = x1 + x2   
POL(tt) = 0   
POL(uLength(x1, x2)) = 1 + x2   
POL(uTake1(x1)) = 0   
POL(uTake2(x1, x2, x3, x4)) = x2 + x3 + x4   
POL(zeros) = 0   

The following usable rules [17] were oriented:

mark(nil) → nil
mark(cons(X1, X2)) → cons(mark(X1), X2)
a__isNatIList(X) → isNatIList(X)
a__and(X1, X2) → and(X1, X2)
a__isNat(X) → isNat(X)
a__isNatList(X) → isNatList(X)
a__zeroszeros
a__length(X) → length(X)
mark(take(X1, X2)) → a__take(mark(X1), mark(X2))
mark(zeros) → a__zeros
mark(uTake2(X1, X2, X3, X4)) → a__uTake2(mark(X1), X2, X3, X4)
mark(uTake1(X)) → a__uTake1(mark(X))
mark(tt) → tt
mark(uLength(X1, X2)) → a__uLength(mark(X1), X2)
mark(s(X)) → s(mark(X))
mark(0) → 0
a__take(X1, X2) → take(X1, X2)
a__uTake1(X) → uTake1(X)
a__uTake2(X1, X2, X3, X4) → uTake2(X1, X2, X3, X4)
a__uLength(X1, X2) → uLength(X1, X2)
a__isNatIList(zeros) → tt
a__isNat(0) → tt
a__take(s(M), cons(N, IL)) → a__uTake2(a__and(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL))), M, N, IL)
a__uTake1(tt) → nil
a__take(0, IL) → a__uTake1(a__isNatIList(IL))
a__zeroscons(0, zeros)
a__isNatList(nil) → tt
mark(length(X)) → a__length(mark(X))
a__isNatIList(IL) → a__isNatList(IL)
mark(isNat(X)) → a__isNat(X)
a__isNat(s(N)) → a__isNat(N)
a__and(tt, T) → mark(T)
mark(isNatList(X)) → a__isNatList(X)
a__isNatIList(cons(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
mark(isNatIList(X)) → a__isNatIList(X)
a__isNat(length(L)) → a__isNatList(L)
mark(and(X1, X2)) → a__and(mark(X1), mark(X2))
a__isNatList(cons(N, L)) → a__and(a__isNat(N), a__isNatList(L))
a__isNatList(take(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__uLength(tt, L) → s(a__length(mark(L)))
a__length(cons(N, L)) → a__uLength(a__and(a__isNat(N), a__isNatList(L)), L)
a__uTake2(tt, M, N, IL) → cons(mark(N), take(M, IL))



↳ QTRS
  ↳ DependencyPairsProof
    ↳ QDP
      ↳ DependencyGraphProof
        ↳ QDP
          ↳ QDPOrderProof
            ↳ QDP
              ↳ DependencyGraphProof
                ↳ AND
                  ↳ QDP
                    ↳ QDPOrderProof
                      ↳ QDP
                        ↳ DependencyGraphProof
                          ↳ QDP
                            ↳ QDPOrderProof
                              ↳ QDP
                                ↳ DependencyGraphProof
                                  ↳ QDP
                                    ↳ QDPOrderProof
                                      ↳ QDP
                                        ↳ QDPOrderProof
                                          ↳ QDP
                                            ↳ QDPOrderProof
QDP
                                                ↳ DependencyGraphProof
                  ↳ QDP

Q DP problem:
The TRS P consists of the following rules:

A__ISNATLIST(cons(N, L)) → A__ISNATLIST(L)
MARK(s(X)) → MARK(X)
A__ISNATILIST(cons(N, IL)) → A__ISNATILIST(IL)
MARK(isNatIList(X)) → A__ISNATILIST(X)
A__ISNAT(s(N)) → A__ISNAT(N)
A__ISNATILIST(cons(N, IL)) → A__AND(a__isNat(N), a__isNatIList(IL))
A__AND(tt, T) → MARK(T)
A__ISNATLIST(cons(N, L)) → A__AND(a__isNat(N), a__isNatList(L))
MARK(and(X1, X2)) → MARK(X1)
A__ISNATLIST(cons(N, L)) → A__ISNAT(N)
A__ISNATILIST(cons(N, IL)) → A__ISNAT(N)
MARK(isNat(X)) → A__ISNAT(X)
MARK(and(X1, X2)) → A__AND(mark(X1), mark(X2))
MARK(isNatList(X)) → A__ISNATLIST(X)
A__ISNATILIST(IL) → A__ISNATLIST(IL)
MARK(and(X1, X2)) → MARK(X2)

The TRS R consists of the following rules:

a__and(tt, T) → mark(T)
a__isNatIList(IL) → a__isNatList(IL)
a__isNat(0) → tt
a__isNat(s(N)) → a__isNat(N)
a__isNat(length(L)) → a__isNatList(L)
a__isNatIList(zeros) → tt
a__isNatIList(cons(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__isNatList(nil) → tt
a__isNatList(cons(N, L)) → a__and(a__isNat(N), a__isNatList(L))
a__isNatList(take(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__zeroscons(0, zeros)
a__take(0, IL) → a__uTake1(a__isNatIList(IL))
a__uTake1(tt) → nil
a__take(s(M), cons(N, IL)) → a__uTake2(a__and(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL))), M, N, IL)
a__uTake2(tt, M, N, IL) → cons(mark(N), take(M, IL))
a__length(cons(N, L)) → a__uLength(a__and(a__isNat(N), a__isNatList(L)), L)
a__uLength(tt, L) → s(a__length(mark(L)))
mark(and(X1, X2)) → a__and(mark(X1), mark(X2))
mark(isNatIList(X)) → a__isNatIList(X)
mark(isNatList(X)) → a__isNatList(X)
mark(isNat(X)) → a__isNat(X)
mark(length(X)) → a__length(mark(X))
mark(zeros) → a__zeros
mark(take(X1, X2)) → a__take(mark(X1), mark(X2))
mark(uTake1(X)) → a__uTake1(mark(X))
mark(uTake2(X1, X2, X3, X4)) → a__uTake2(mark(X1), X2, X3, X4)
mark(uLength(X1, X2)) → a__uLength(mark(X1), X2)
mark(tt) → tt
mark(0) → 0
mark(s(X)) → s(mark(X))
mark(cons(X1, X2)) → cons(mark(X1), X2)
mark(nil) → nil
a__and(X1, X2) → and(X1, X2)
a__isNatIList(X) → isNatIList(X)
a__isNatList(X) → isNatList(X)
a__isNat(X) → isNat(X)
a__length(X) → length(X)
a__zeroszeros
a__take(X1, X2) → take(X1, X2)
a__uTake1(X) → uTake1(X)
a__uTake2(X1, X2, X3, X4) → uTake2(X1, X2, X3, X4)
a__uLength(X1, X2) → uLength(X1, X2)

Q is empty.
We have to consider all minimal (P,Q,R)-chains.
The approximation of the Dependency Graph [15,17,22] contains 2 SCCs with 3 less nodes.

↳ QTRS
  ↳ DependencyPairsProof
    ↳ QDP
      ↳ DependencyGraphProof
        ↳ QDP
          ↳ QDPOrderProof
            ↳ QDP
              ↳ DependencyGraphProof
                ↳ AND
                  ↳ QDP
                    ↳ QDPOrderProof
                      ↳ QDP
                        ↳ DependencyGraphProof
                          ↳ QDP
                            ↳ QDPOrderProof
                              ↳ QDP
                                ↳ DependencyGraphProof
                                  ↳ QDP
                                    ↳ QDPOrderProof
                                      ↳ QDP
                                        ↳ QDPOrderProof
                                          ↳ QDP
                                            ↳ QDPOrderProof
                                              ↳ QDP
                                                ↳ DependencyGraphProof
                                                  ↳ AND
QDP
                                                      ↳ UsableRulesProof
                                                    ↳ QDP
                  ↳ QDP

Q DP problem:
The TRS P consists of the following rules:

A__ISNAT(s(N)) → A__ISNAT(N)

The TRS R consists of the following rules:

a__and(tt, T) → mark(T)
a__isNatIList(IL) → a__isNatList(IL)
a__isNat(0) → tt
a__isNat(s(N)) → a__isNat(N)
a__isNat(length(L)) → a__isNatList(L)
a__isNatIList(zeros) → tt
a__isNatIList(cons(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__isNatList(nil) → tt
a__isNatList(cons(N, L)) → a__and(a__isNat(N), a__isNatList(L))
a__isNatList(take(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__zeroscons(0, zeros)
a__take(0, IL) → a__uTake1(a__isNatIList(IL))
a__uTake1(tt) → nil
a__take(s(M), cons(N, IL)) → a__uTake2(a__and(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL))), M, N, IL)
a__uTake2(tt, M, N, IL) → cons(mark(N), take(M, IL))
a__length(cons(N, L)) → a__uLength(a__and(a__isNat(N), a__isNatList(L)), L)
a__uLength(tt, L) → s(a__length(mark(L)))
mark(and(X1, X2)) → a__and(mark(X1), mark(X2))
mark(isNatIList(X)) → a__isNatIList(X)
mark(isNatList(X)) → a__isNatList(X)
mark(isNat(X)) → a__isNat(X)
mark(length(X)) → a__length(mark(X))
mark(zeros) → a__zeros
mark(take(X1, X2)) → a__take(mark(X1), mark(X2))
mark(uTake1(X)) → a__uTake1(mark(X))
mark(uTake2(X1, X2, X3, X4)) → a__uTake2(mark(X1), X2, X3, X4)
mark(uLength(X1, X2)) → a__uLength(mark(X1), X2)
mark(tt) → tt
mark(0) → 0
mark(s(X)) → s(mark(X))
mark(cons(X1, X2)) → cons(mark(X1), X2)
mark(nil) → nil
a__and(X1, X2) → and(X1, X2)
a__isNatIList(X) → isNatIList(X)
a__isNatList(X) → isNatList(X)
a__isNat(X) → isNat(X)
a__length(X) → length(X)
a__zeroszeros
a__take(X1, X2) → take(X1, X2)
a__uTake1(X) → uTake1(X)
a__uTake2(X1, X2, X3, X4) → uTake2(X1, X2, X3, X4)
a__uLength(X1, X2) → uLength(X1, X2)

Q is empty.
We have to consider all minimal (P,Q,R)-chains.
We can use the usable rules and reduction pair processor [15] with the Ce-compatible extension of the polynomial order that maps every function symbol to the sum of its argument. Then, we can delete all non-usable rules [17] from R.

↳ QTRS
  ↳ DependencyPairsProof
    ↳ QDP
      ↳ DependencyGraphProof
        ↳ QDP
          ↳ QDPOrderProof
            ↳ QDP
              ↳ DependencyGraphProof
                ↳ AND
                  ↳ QDP
                    ↳ QDPOrderProof
                      ↳ QDP
                        ↳ DependencyGraphProof
                          ↳ QDP
                            ↳ QDPOrderProof
                              ↳ QDP
                                ↳ DependencyGraphProof
                                  ↳ QDP
                                    ↳ QDPOrderProof
                                      ↳ QDP
                                        ↳ QDPOrderProof
                                          ↳ QDP
                                            ↳ QDPOrderProof
                                              ↳ QDP
                                                ↳ DependencyGraphProof
                                                  ↳ AND
                                                    ↳ QDP
                                                      ↳ UsableRulesProof
QDP
                                                          ↳ QDPSizeChangeProof
                                                    ↳ QDP
                  ↳ QDP

Q DP problem:
The TRS P consists of the following rules:

A__ISNAT(s(N)) → A__ISNAT(N)

R is empty.
Q is empty.
We have to consider all minimal (P,Q,R)-chains.
By using the subterm criterion [20] together with the size-change analysis [32] we have proven that there are no infinite chains for this DP problem.

From the DPs we obtained the following set of size-change graphs:



↳ QTRS
  ↳ DependencyPairsProof
    ↳ QDP
      ↳ DependencyGraphProof
        ↳ QDP
          ↳ QDPOrderProof
            ↳ QDP
              ↳ DependencyGraphProof
                ↳ AND
                  ↳ QDP
                    ↳ QDPOrderProof
                      ↳ QDP
                        ↳ DependencyGraphProof
                          ↳ QDP
                            ↳ QDPOrderProof
                              ↳ QDP
                                ↳ DependencyGraphProof
                                  ↳ QDP
                                    ↳ QDPOrderProof
                                      ↳ QDP
                                        ↳ QDPOrderProof
                                          ↳ QDP
                                            ↳ QDPOrderProof
                                              ↳ QDP
                                                ↳ DependencyGraphProof
                                                  ↳ AND
                                                    ↳ QDP
QDP
                                                      ↳ QDPOrderProof
                  ↳ QDP

Q DP problem:
The TRS P consists of the following rules:

A__ISNATLIST(cons(N, L)) → A__AND(a__isNat(N), a__isNatList(L))
A__ISNATLIST(cons(N, L)) → A__ISNATLIST(L)
MARK(s(X)) → MARK(X)
A__ISNATILIST(cons(N, IL)) → A__ISNATILIST(IL)
MARK(and(X1, X2)) → MARK(X1)
MARK(isNatIList(X)) → A__ISNATILIST(X)
MARK(isNatList(X)) → A__ISNATLIST(X)
MARK(and(X1, X2)) → A__AND(mark(X1), mark(X2))
A__ISNATILIST(IL) → A__ISNATLIST(IL)
MARK(and(X1, X2)) → MARK(X2)
A__ISNATILIST(cons(N, IL)) → A__AND(a__isNat(N), a__isNatIList(IL))
A__AND(tt, T) → MARK(T)

The TRS R consists of the following rules:

a__and(tt, T) → mark(T)
a__isNatIList(IL) → a__isNatList(IL)
a__isNat(0) → tt
a__isNat(s(N)) → a__isNat(N)
a__isNat(length(L)) → a__isNatList(L)
a__isNatIList(zeros) → tt
a__isNatIList(cons(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__isNatList(nil) → tt
a__isNatList(cons(N, L)) → a__and(a__isNat(N), a__isNatList(L))
a__isNatList(take(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__zeroscons(0, zeros)
a__take(0, IL) → a__uTake1(a__isNatIList(IL))
a__uTake1(tt) → nil
a__take(s(M), cons(N, IL)) → a__uTake2(a__and(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL))), M, N, IL)
a__uTake2(tt, M, N, IL) → cons(mark(N), take(M, IL))
a__length(cons(N, L)) → a__uLength(a__and(a__isNat(N), a__isNatList(L)), L)
a__uLength(tt, L) → s(a__length(mark(L)))
mark(and(X1, X2)) → a__and(mark(X1), mark(X2))
mark(isNatIList(X)) → a__isNatIList(X)
mark(isNatList(X)) → a__isNatList(X)
mark(isNat(X)) → a__isNat(X)
mark(length(X)) → a__length(mark(X))
mark(zeros) → a__zeros
mark(take(X1, X2)) → a__take(mark(X1), mark(X2))
mark(uTake1(X)) → a__uTake1(mark(X))
mark(uTake2(X1, X2, X3, X4)) → a__uTake2(mark(X1), X2, X3, X4)
mark(uLength(X1, X2)) → a__uLength(mark(X1), X2)
mark(tt) → tt
mark(0) → 0
mark(s(X)) → s(mark(X))
mark(cons(X1, X2)) → cons(mark(X1), X2)
mark(nil) → nil
a__and(X1, X2) → and(X1, X2)
a__isNatIList(X) → isNatIList(X)
a__isNatList(X) → isNatList(X)
a__isNat(X) → isNat(X)
a__length(X) → length(X)
a__zeroszeros
a__take(X1, X2) → take(X1, X2)
a__uTake1(X) → uTake1(X)
a__uTake2(X1, X2, X3, X4) → uTake2(X1, X2, X3, X4)
a__uLength(X1, X2) → uLength(X1, X2)

Q is empty.
We have to consider all minimal (P,Q,R)-chains.
We use the reduction pair processor [15].


The following pairs can be oriented strictly and are deleted.


A__ISNATILIST(IL) → A__ISNATLIST(IL)
The remaining pairs can at least be oriented weakly.

A__ISNATLIST(cons(N, L)) → A__AND(a__isNat(N), a__isNatList(L))
A__ISNATLIST(cons(N, L)) → A__ISNATLIST(L)
MARK(s(X)) → MARK(X)
A__ISNATILIST(cons(N, IL)) → A__ISNATILIST(IL)
MARK(and(X1, X2)) → MARK(X1)
MARK(isNatIList(X)) → A__ISNATILIST(X)
MARK(isNatList(X)) → A__ISNATLIST(X)
MARK(and(X1, X2)) → A__AND(mark(X1), mark(X2))
MARK(and(X1, X2)) → MARK(X2)
A__ISNATILIST(cons(N, IL)) → A__AND(a__isNat(N), a__isNatIList(IL))
A__AND(tt, T) → MARK(T)
Used ordering: Polynomial interpretation with max and min functions [25]:

POL(0) = 0   
POL(A__AND(x1, x2)) = x2   
POL(A__ISNATILIST(x1)) = 1 + x1   
POL(A__ISNATLIST(x1)) = x1   
POL(MARK(x1)) = x1   
POL(a__and(x1, x2)) = x1 + x2   
POL(a__isNat(x1)) = x1   
POL(a__isNatIList(x1)) = 1 + x1   
POL(a__isNatList(x1)) = x1   
POL(a__length(x1)) = 1 + x1   
POL(a__take(x1, x2)) = 1 + x1 + x2   
POL(a__uLength(x1, x2)) = 1 + x2   
POL(a__uTake1(x1)) = 1   
POL(a__uTake2(x1, x2, x3, x4)) = 1 + x2 + x3 + x4   
POL(a__zeros) = 0   
POL(and(x1, x2)) = x1 + x2   
POL(cons(x1, x2)) = x1 + x2   
POL(isNat(x1)) = x1   
POL(isNatIList(x1)) = 1 + x1   
POL(isNatList(x1)) = x1   
POL(length(x1)) = 1 + x1   
POL(mark(x1)) = x1   
POL(nil) = 1   
POL(s(x1)) = x1   
POL(take(x1, x2)) = 1 + x1 + x2   
POL(tt) = 0   
POL(uLength(x1, x2)) = 1 + x2   
POL(uTake1(x1)) = 1   
POL(uTake2(x1, x2, x3, x4)) = 1 + x2 + x3 + x4   
POL(zeros) = 0   

The following usable rules [17] were oriented:

mark(nil) → nil
mark(cons(X1, X2)) → cons(mark(X1), X2)
a__isNatIList(X) → isNatIList(X)
a__and(X1, X2) → and(X1, X2)
a__isNat(X) → isNat(X)
a__isNatList(X) → isNatList(X)
a__zeroszeros
a__length(X) → length(X)
mark(take(X1, X2)) → a__take(mark(X1), mark(X2))
mark(zeros) → a__zeros
mark(uTake2(X1, X2, X3, X4)) → a__uTake2(mark(X1), X2, X3, X4)
mark(uTake1(X)) → a__uTake1(mark(X))
mark(tt) → tt
mark(uLength(X1, X2)) → a__uLength(mark(X1), X2)
mark(s(X)) → s(mark(X))
mark(0) → 0
a__take(X1, X2) → take(X1, X2)
a__uTake1(X) → uTake1(X)
a__uTake2(X1, X2, X3, X4) → uTake2(X1, X2, X3, X4)
a__uLength(X1, X2) → uLength(X1, X2)
a__isNatIList(zeros) → tt
a__isNat(0) → tt
a__take(s(M), cons(N, IL)) → a__uTake2(a__and(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL))), M, N, IL)
a__uTake1(tt) → nil
a__take(0, IL) → a__uTake1(a__isNatIList(IL))
a__zeroscons(0, zeros)
a__isNatList(nil) → tt
mark(length(X)) → a__length(mark(X))
a__isNatIList(IL) → a__isNatList(IL)
mark(isNat(X)) → a__isNat(X)
a__isNat(s(N)) → a__isNat(N)
a__and(tt, T) → mark(T)
mark(isNatList(X)) → a__isNatList(X)
a__isNatIList(cons(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
mark(isNatIList(X)) → a__isNatIList(X)
a__isNat(length(L)) → a__isNatList(L)
mark(and(X1, X2)) → a__and(mark(X1), mark(X2))
a__isNatList(cons(N, L)) → a__and(a__isNat(N), a__isNatList(L))
a__isNatList(take(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__uLength(tt, L) → s(a__length(mark(L)))
a__length(cons(N, L)) → a__uLength(a__and(a__isNat(N), a__isNatList(L)), L)
a__uTake2(tt, M, N, IL) → cons(mark(N), take(M, IL))



↳ QTRS
  ↳ DependencyPairsProof
    ↳ QDP
      ↳ DependencyGraphProof
        ↳ QDP
          ↳ QDPOrderProof
            ↳ QDP
              ↳ DependencyGraphProof
                ↳ AND
                  ↳ QDP
                    ↳ QDPOrderProof
                      ↳ QDP
                        ↳ DependencyGraphProof
                          ↳ QDP
                            ↳ QDPOrderProof
                              ↳ QDP
                                ↳ DependencyGraphProof
                                  ↳ QDP
                                    ↳ QDPOrderProof
                                      ↳ QDP
                                        ↳ QDPOrderProof
                                          ↳ QDP
                                            ↳ QDPOrderProof
                                              ↳ QDP
                                                ↳ DependencyGraphProof
                                                  ↳ AND
                                                    ↳ QDP
                                                    ↳ QDP
                                                      ↳ QDPOrderProof
QDP
                                                          ↳ QDPOrderProof
                  ↳ QDP

Q DP problem:
The TRS P consists of the following rules:

A__ISNATLIST(cons(N, L)) → A__AND(a__isNat(N), a__isNatList(L))
A__ISNATLIST(cons(N, L)) → A__ISNATLIST(L)
MARK(s(X)) → MARK(X)
MARK(and(X1, X2)) → MARK(X1)
A__ISNATILIST(cons(N, IL)) → A__ISNATILIST(IL)
MARK(isNatIList(X)) → A__ISNATILIST(X)
MARK(and(X1, X2)) → A__AND(mark(X1), mark(X2))
MARK(isNatList(X)) → A__ISNATLIST(X)
MARK(and(X1, X2)) → MARK(X2)
A__AND(tt, T) → MARK(T)
A__ISNATILIST(cons(N, IL)) → A__AND(a__isNat(N), a__isNatIList(IL))

The TRS R consists of the following rules:

a__and(tt, T) → mark(T)
a__isNatIList(IL) → a__isNatList(IL)
a__isNat(0) → tt
a__isNat(s(N)) → a__isNat(N)
a__isNat(length(L)) → a__isNatList(L)
a__isNatIList(zeros) → tt
a__isNatIList(cons(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__isNatList(nil) → tt
a__isNatList(cons(N, L)) → a__and(a__isNat(N), a__isNatList(L))
a__isNatList(take(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__zeroscons(0, zeros)
a__take(0, IL) → a__uTake1(a__isNatIList(IL))
a__uTake1(tt) → nil
a__take(s(M), cons(N, IL)) → a__uTake2(a__and(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL))), M, N, IL)
a__uTake2(tt, M, N, IL) → cons(mark(N), take(M, IL))
a__length(cons(N, L)) → a__uLength(a__and(a__isNat(N), a__isNatList(L)), L)
a__uLength(tt, L) → s(a__length(mark(L)))
mark(and(X1, X2)) → a__and(mark(X1), mark(X2))
mark(isNatIList(X)) → a__isNatIList(X)
mark(isNatList(X)) → a__isNatList(X)
mark(isNat(X)) → a__isNat(X)
mark(length(X)) → a__length(mark(X))
mark(zeros) → a__zeros
mark(take(X1, X2)) → a__take(mark(X1), mark(X2))
mark(uTake1(X)) → a__uTake1(mark(X))
mark(uTake2(X1, X2, X3, X4)) → a__uTake2(mark(X1), X2, X3, X4)
mark(uLength(X1, X2)) → a__uLength(mark(X1), X2)
mark(tt) → tt
mark(0) → 0
mark(s(X)) → s(mark(X))
mark(cons(X1, X2)) → cons(mark(X1), X2)
mark(nil) → nil
a__and(X1, X2) → and(X1, X2)
a__isNatIList(X) → isNatIList(X)
a__isNatList(X) → isNatList(X)
a__isNat(X) → isNat(X)
a__length(X) → length(X)
a__zeroszeros
a__take(X1, X2) → take(X1, X2)
a__uTake1(X) → uTake1(X)
a__uTake2(X1, X2, X3, X4) → uTake2(X1, X2, X3, X4)
a__uLength(X1, X2) → uLength(X1, X2)

Q is empty.
We have to consider all minimal (P,Q,R)-chains.
We use the reduction pair processor [15].


The following pairs can be oriented strictly and are deleted.


MARK(s(X)) → MARK(X)
The remaining pairs can at least be oriented weakly.

A__ISNATLIST(cons(N, L)) → A__AND(a__isNat(N), a__isNatList(L))
A__ISNATLIST(cons(N, L)) → A__ISNATLIST(L)
MARK(and(X1, X2)) → MARK(X1)
A__ISNATILIST(cons(N, IL)) → A__ISNATILIST(IL)
MARK(isNatIList(X)) → A__ISNATILIST(X)
MARK(and(X1, X2)) → A__AND(mark(X1), mark(X2))
MARK(isNatList(X)) → A__ISNATLIST(X)
MARK(and(X1, X2)) → MARK(X2)
A__AND(tt, T) → MARK(T)
A__ISNATILIST(cons(N, IL)) → A__AND(a__isNat(N), a__isNatIList(IL))
Used ordering: Matrix interpretation [3]:
Non-tuple symbols:
M( a__zeros ) =
/0\
\0/

M( mark(x1) ) =
/0\
\0/
+
/10\
\01/
·x1

M( a__isNatIList(x1) ) =
/0\
\1/
+
/00\
\01/
·x1

M( and(x1, x2) ) =
/0\
\0/
+
/10\
\00/
·x1+
/10\
\01/
·x2

M( a__uTake1(x1) ) =
/0\
\1/
+
/00\
\00/
·x1

M( take(x1, x2) ) =
/0\
\1/
+
/10\
\00/
·x1+
/10\
\01/
·x2

M( a__uLength(x1, x2) ) =
/0\
\0/
+
/01\
\00/
·x1+
/11\
\00/
·x2

M( a__length(x1) ) =
/0\
\0/
+
/11\
\00/
·x1

M( tt ) =
/0\
\1/

M( isNatList(x1) ) =
/0\
\0/
+
/00\
\01/
·x1

M( zeros ) =
/0\
\0/

M( isNatIList(x1) ) =
/0\
\1/
+
/00\
\01/
·x1

M( a__isNat(x1) ) =
/0\
\1/
+
/00\
\10/
·x1

M( s(x1) ) =
/1\
\0/
+
/10\
\00/
·x1

M( isNat(x1) ) =
/0\
\1/
+
/00\
\10/
·x1

M( a__isNatList(x1) ) =
/0\
\0/
+
/00\
\01/
·x1

M( nil ) =
/0\
\1/

M( a__uTake2(x1, ..., x4) ) =
/1\
\1/
+
/00\
\00/
·x1+
/10\
\00/
·x2+
/00\
\00/
·x3+
/11\
\01/
·x4

M( a__and(x1, x2) ) =
/0\
\0/
+
/10\
\00/
·x1+
/10\
\01/
·x2

M( 0 ) =
/0\
\0/

M( a__take(x1, x2) ) =
/0\
\1/
+
/10\
\00/
·x1+
/10\
\01/
·x2

M( cons(x1, x2) ) =
/0\
\0/
+
/00\
\00/
·x1+
/11\
\01/
·x2

M( uTake2(x1, ..., x4) ) =
/1\
\1/
+
/00\
\00/
·x1+
/10\
\00/
·x2+
/00\
\00/
·x3+
/11\
\01/
·x4

M( uTake1(x1) ) =
/0\
\1/
+
/00\
\00/
·x1

M( length(x1) ) =
/0\
\0/
+
/11\
\00/
·x1

M( uLength(x1, x2) ) =
/0\
\0/
+
/01\
\00/
·x1+
/11\
\00/
·x2

Tuple symbols:
M( A__AND(x1, x2) ) = 0+
[0,0]
·x1+
[1,0]
·x2

M( MARK(x1) ) = 0+
[1,0]
·x1

M( A__ISNATILIST(x1) ) = 0+
[0,0]
·x1

M( A__ISNATLIST(x1) ) = 0+
[0,0]
·x1


Matrix type:
We used a basic matrix type which is not further parametrizeable.


As matrix orders are CE-compatible, we used usable rules w.r.t. argument filtering in the order.
The following usable rules [17] were oriented:

mark(nil) → nil
mark(cons(X1, X2)) → cons(mark(X1), X2)
a__isNatIList(X) → isNatIList(X)
a__and(X1, X2) → and(X1, X2)
a__isNat(X) → isNat(X)
a__isNatList(X) → isNatList(X)
a__zeroszeros
a__length(X) → length(X)
mark(take(X1, X2)) → a__take(mark(X1), mark(X2))
mark(zeros) → a__zeros
mark(uTake2(X1, X2, X3, X4)) → a__uTake2(mark(X1), X2, X3, X4)
mark(uTake1(X)) → a__uTake1(mark(X))
mark(tt) → tt
mark(uLength(X1, X2)) → a__uLength(mark(X1), X2)
mark(s(X)) → s(mark(X))
mark(0) → 0
a__take(X1, X2) → take(X1, X2)
a__uTake1(X) → uTake1(X)
a__uTake2(X1, X2, X3, X4) → uTake2(X1, X2, X3, X4)
a__uLength(X1, X2) → uLength(X1, X2)
a__isNatIList(zeros) → tt
a__isNat(0) → tt
a__take(s(M), cons(N, IL)) → a__uTake2(a__and(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL))), M, N, IL)
a__uTake1(tt) → nil
a__take(0, IL) → a__uTake1(a__isNatIList(IL))
a__zeroscons(0, zeros)
a__isNatList(nil) → tt
mark(length(X)) → a__length(mark(X))
a__isNatIList(IL) → a__isNatList(IL)
mark(isNat(X)) → a__isNat(X)
a__isNat(s(N)) → a__isNat(N)
a__and(tt, T) → mark(T)
mark(isNatList(X)) → a__isNatList(X)
a__isNatIList(cons(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
mark(isNatIList(X)) → a__isNatIList(X)
a__isNat(length(L)) → a__isNatList(L)
mark(and(X1, X2)) → a__and(mark(X1), mark(X2))
a__isNatList(cons(N, L)) → a__and(a__isNat(N), a__isNatList(L))
a__isNatList(take(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__uLength(tt, L) → s(a__length(mark(L)))
a__length(cons(N, L)) → a__uLength(a__and(a__isNat(N), a__isNatList(L)), L)
a__uTake2(tt, M, N, IL) → cons(mark(N), take(M, IL))



↳ QTRS
  ↳ DependencyPairsProof
    ↳ QDP
      ↳ DependencyGraphProof
        ↳ QDP
          ↳ QDPOrderProof
            ↳ QDP
              ↳ DependencyGraphProof
                ↳ AND
                  ↳ QDP
                    ↳ QDPOrderProof
                      ↳ QDP
                        ↳ DependencyGraphProof
                          ↳ QDP
                            ↳ QDPOrderProof
                              ↳ QDP
                                ↳ DependencyGraphProof
                                  ↳ QDP
                                    ↳ QDPOrderProof
                                      ↳ QDP
                                        ↳ QDPOrderProof
                                          ↳ QDP
                                            ↳ QDPOrderProof
                                              ↳ QDP
                                                ↳ DependencyGraphProof
                                                  ↳ AND
                                                    ↳ QDP
                                                    ↳ QDP
                                                      ↳ QDPOrderProof
                                                        ↳ QDP
                                                          ↳ QDPOrderProof
QDP
                                                              ↳ Narrowing
                  ↳ QDP

Q DP problem:
The TRS P consists of the following rules:

A__ISNATLIST(cons(N, L)) → A__AND(a__isNat(N), a__isNatList(L))
A__ISNATLIST(cons(N, L)) → A__ISNATLIST(L)
A__ISNATILIST(cons(N, IL)) → A__ISNATILIST(IL)
MARK(and(X1, X2)) → MARK(X1)
MARK(isNatIList(X)) → A__ISNATILIST(X)
MARK(isNatList(X)) → A__ISNATLIST(X)
MARK(and(X1, X2)) → A__AND(mark(X1), mark(X2))
MARK(and(X1, X2)) → MARK(X2)
A__ISNATILIST(cons(N, IL)) → A__AND(a__isNat(N), a__isNatIList(IL))
A__AND(tt, T) → MARK(T)

The TRS R consists of the following rules:

a__and(tt, T) → mark(T)
a__isNatIList(IL) → a__isNatList(IL)
a__isNat(0) → tt
a__isNat(s(N)) → a__isNat(N)
a__isNat(length(L)) → a__isNatList(L)
a__isNatIList(zeros) → tt
a__isNatIList(cons(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__isNatList(nil) → tt
a__isNatList(cons(N, L)) → a__and(a__isNat(N), a__isNatList(L))
a__isNatList(take(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__zeroscons(0, zeros)
a__take(0, IL) → a__uTake1(a__isNatIList(IL))
a__uTake1(tt) → nil
a__take(s(M), cons(N, IL)) → a__uTake2(a__and(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL))), M, N, IL)
a__uTake2(tt, M, N, IL) → cons(mark(N), take(M, IL))
a__length(cons(N, L)) → a__uLength(a__and(a__isNat(N), a__isNatList(L)), L)
a__uLength(tt, L) → s(a__length(mark(L)))
mark(and(X1, X2)) → a__and(mark(X1), mark(X2))
mark(isNatIList(X)) → a__isNatIList(X)
mark(isNatList(X)) → a__isNatList(X)
mark(isNat(X)) → a__isNat(X)
mark(length(X)) → a__length(mark(X))
mark(zeros) → a__zeros
mark(take(X1, X2)) → a__take(mark(X1), mark(X2))
mark(uTake1(X)) → a__uTake1(mark(X))
mark(uTake2(X1, X2, X3, X4)) → a__uTake2(mark(X1), X2, X3, X4)
mark(uLength(X1, X2)) → a__uLength(mark(X1), X2)
mark(tt) → tt
mark(0) → 0
mark(s(X)) → s(mark(X))
mark(cons(X1, X2)) → cons(mark(X1), X2)
mark(nil) → nil
a__and(X1, X2) → and(X1, X2)
a__isNatIList(X) → isNatIList(X)
a__isNatList(X) → isNatList(X)
a__isNat(X) → isNat(X)
a__length(X) → length(X)
a__zeroszeros
a__take(X1, X2) → take(X1, X2)
a__uTake1(X) → uTake1(X)
a__uTake2(X1, X2, X3, X4) → uTake2(X1, X2, X3, X4)
a__uLength(X1, X2) → uLength(X1, X2)

Q is empty.
We have to consider all minimal (P,Q,R)-chains.
By narrowing [15] the rule A__ISNATLIST(cons(N, L)) → A__AND(a__isNat(N), a__isNatList(L)) at position [0] we obtained the following new rules:

A__ISNATLIST(cons(length(x0), y1)) → A__AND(a__isNatList(x0), a__isNatList(y1))
A__ISNATLIST(cons(0, y1)) → A__AND(tt, a__isNatList(y1))
A__ISNATLIST(cons(x0, y1)) → A__AND(isNat(x0), a__isNatList(y1))
A__ISNATLIST(cons(s(x0), y1)) → A__AND(a__isNat(x0), a__isNatList(y1))



↳ QTRS
  ↳ DependencyPairsProof
    ↳ QDP
      ↳ DependencyGraphProof
        ↳ QDP
          ↳ QDPOrderProof
            ↳ QDP
              ↳ DependencyGraphProof
                ↳ AND
                  ↳ QDP
                    ↳ QDPOrderProof
                      ↳ QDP
                        ↳ DependencyGraphProof
                          ↳ QDP
                            ↳ QDPOrderProof
                              ↳ QDP
                                ↳ DependencyGraphProof
                                  ↳ QDP
                                    ↳ QDPOrderProof
                                      ↳ QDP
                                        ↳ QDPOrderProof
                                          ↳ QDP
                                            ↳ QDPOrderProof
                                              ↳ QDP
                                                ↳ DependencyGraphProof
                                                  ↳ AND
                                                    ↳ QDP
                                                    ↳ QDP
                                                      ↳ QDPOrderProof
                                                        ↳ QDP
                                                          ↳ QDPOrderProof
                                                            ↳ QDP
                                                              ↳ Narrowing
QDP
                                                                  ↳ DependencyGraphProof
                  ↳ QDP

Q DP problem:
The TRS P consists of the following rules:

A__ISNATLIST(cons(N, L)) → A__ISNATLIST(L)
A__ISNATILIST(cons(N, IL)) → A__ISNATILIST(IL)
MARK(isNatIList(X)) → A__ISNATILIST(X)
A__ISNATLIST(cons(length(x0), y1)) → A__AND(a__isNatList(x0), a__isNatList(y1))
A__ISNATLIST(cons(x0, y1)) → A__AND(isNat(x0), a__isNatList(y1))
A__ISNATILIST(cons(N, IL)) → A__AND(a__isNat(N), a__isNatIList(IL))
A__AND(tt, T) → MARK(T)
A__ISNATLIST(cons(0, y1)) → A__AND(tt, a__isNatList(y1))
A__ISNATLIST(cons(s(x0), y1)) → A__AND(a__isNat(x0), a__isNatList(y1))
MARK(and(X1, X2)) → MARK(X1)
MARK(isNatList(X)) → A__ISNATLIST(X)
MARK(and(X1, X2)) → A__AND(mark(X1), mark(X2))
MARK(and(X1, X2)) → MARK(X2)

The TRS R consists of the following rules:

a__and(tt, T) → mark(T)
a__isNatIList(IL) → a__isNatList(IL)
a__isNat(0) → tt
a__isNat(s(N)) → a__isNat(N)
a__isNat(length(L)) → a__isNatList(L)
a__isNatIList(zeros) → tt
a__isNatIList(cons(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__isNatList(nil) → tt
a__isNatList(cons(N, L)) → a__and(a__isNat(N), a__isNatList(L))
a__isNatList(take(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__zeroscons(0, zeros)
a__take(0, IL) → a__uTake1(a__isNatIList(IL))
a__uTake1(tt) → nil
a__take(s(M), cons(N, IL)) → a__uTake2(a__and(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL))), M, N, IL)
a__uTake2(tt, M, N, IL) → cons(mark(N), take(M, IL))
a__length(cons(N, L)) → a__uLength(a__and(a__isNat(N), a__isNatList(L)), L)
a__uLength(tt, L) → s(a__length(mark(L)))
mark(and(X1, X2)) → a__and(mark(X1), mark(X2))
mark(isNatIList(X)) → a__isNatIList(X)
mark(isNatList(X)) → a__isNatList(X)
mark(isNat(X)) → a__isNat(X)
mark(length(X)) → a__length(mark(X))
mark(zeros) → a__zeros
mark(take(X1, X2)) → a__take(mark(X1), mark(X2))
mark(uTake1(X)) → a__uTake1(mark(X))
mark(uTake2(X1, X2, X3, X4)) → a__uTake2(mark(X1), X2, X3, X4)
mark(uLength(X1, X2)) → a__uLength(mark(X1), X2)
mark(tt) → tt
mark(0) → 0
mark(s(X)) → s(mark(X))
mark(cons(X1, X2)) → cons(mark(X1), X2)
mark(nil) → nil
a__and(X1, X2) → and(X1, X2)
a__isNatIList(X) → isNatIList(X)
a__isNatList(X) → isNatList(X)
a__isNat(X) → isNat(X)
a__length(X) → length(X)
a__zeroszeros
a__take(X1, X2) → take(X1, X2)
a__uTake1(X) → uTake1(X)
a__uTake2(X1, X2, X3, X4) → uTake2(X1, X2, X3, X4)
a__uLength(X1, X2) → uLength(X1, X2)

Q is empty.
We have to consider all minimal (P,Q,R)-chains.
The approximation of the Dependency Graph [15,17,22] contains 1 SCC with 1 less node.

↳ QTRS
  ↳ DependencyPairsProof
    ↳ QDP
      ↳ DependencyGraphProof
        ↳ QDP
          ↳ QDPOrderProof
            ↳ QDP
              ↳ DependencyGraphProof
                ↳ AND
                  ↳ QDP
                    ↳ QDPOrderProof
                      ↳ QDP
                        ↳ DependencyGraphProof
                          ↳ QDP
                            ↳ QDPOrderProof
                              ↳ QDP
                                ↳ DependencyGraphProof
                                  ↳ QDP
                                    ↳ QDPOrderProof
                                      ↳ QDP
                                        ↳ QDPOrderProof
                                          ↳ QDP
                                            ↳ QDPOrderProof
                                              ↳ QDP
                                                ↳ DependencyGraphProof
                                                  ↳ AND
                                                    ↳ QDP
                                                    ↳ QDP
                                                      ↳ QDPOrderProof
                                                        ↳ QDP
                                                          ↳ QDPOrderProof
                                                            ↳ QDP
                                                              ↳ Narrowing
                                                                ↳ QDP
                                                                  ↳ DependencyGraphProof
QDP
                                                                      ↳ Narrowing
                  ↳ QDP

Q DP problem:
The TRS P consists of the following rules:

A__ISNATLIST(cons(0, y1)) → A__AND(tt, a__isNatList(y1))
A__ISNATLIST(cons(N, L)) → A__ISNATLIST(L)
A__ISNATLIST(cons(s(x0), y1)) → A__AND(a__isNat(x0), a__isNatList(y1))
A__ISNATILIST(cons(N, IL)) → A__ISNATILIST(IL)
MARK(and(X1, X2)) → MARK(X1)
MARK(isNatIList(X)) → A__ISNATILIST(X)
A__ISNATLIST(cons(length(x0), y1)) → A__AND(a__isNatList(x0), a__isNatList(y1))
MARK(isNatList(X)) → A__ISNATLIST(X)
MARK(and(X1, X2)) → A__AND(mark(X1), mark(X2))
MARK(and(X1, X2)) → MARK(X2)
A__ISNATILIST(cons(N, IL)) → A__AND(a__isNat(N), a__isNatIList(IL))
A__AND(tt, T) → MARK(T)

The TRS R consists of the following rules:

a__and(tt, T) → mark(T)
a__isNatIList(IL) → a__isNatList(IL)
a__isNat(0) → tt
a__isNat(s(N)) → a__isNat(N)
a__isNat(length(L)) → a__isNatList(L)
a__isNatIList(zeros) → tt
a__isNatIList(cons(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__isNatList(nil) → tt
a__isNatList(cons(N, L)) → a__and(a__isNat(N), a__isNatList(L))
a__isNatList(take(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__zeroscons(0, zeros)
a__take(0, IL) → a__uTake1(a__isNatIList(IL))
a__uTake1(tt) → nil
a__take(s(M), cons(N, IL)) → a__uTake2(a__and(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL))), M, N, IL)
a__uTake2(tt, M, N, IL) → cons(mark(N), take(M, IL))
a__length(cons(N, L)) → a__uLength(a__and(a__isNat(N), a__isNatList(L)), L)
a__uLength(tt, L) → s(a__length(mark(L)))
mark(and(X1, X2)) → a__and(mark(X1), mark(X2))
mark(isNatIList(X)) → a__isNatIList(X)
mark(isNatList(X)) → a__isNatList(X)
mark(isNat(X)) → a__isNat(X)
mark(length(X)) → a__length(mark(X))
mark(zeros) → a__zeros
mark(take(X1, X2)) → a__take(mark(X1), mark(X2))
mark(uTake1(X)) → a__uTake1(mark(X))
mark(uTake2(X1, X2, X3, X4)) → a__uTake2(mark(X1), X2, X3, X4)
mark(uLength(X1, X2)) → a__uLength(mark(X1), X2)
mark(tt) → tt
mark(0) → 0
mark(s(X)) → s(mark(X))
mark(cons(X1, X2)) → cons(mark(X1), X2)
mark(nil) → nil
a__and(X1, X2) → and(X1, X2)
a__isNatIList(X) → isNatIList(X)
a__isNatList(X) → isNatList(X)
a__isNat(X) → isNat(X)
a__length(X) → length(X)
a__zeroszeros
a__take(X1, X2) → take(X1, X2)
a__uTake1(X) → uTake1(X)
a__uTake2(X1, X2, X3, X4) → uTake2(X1, X2, X3, X4)
a__uLength(X1, X2) → uLength(X1, X2)

Q is empty.
We have to consider all minimal (P,Q,R)-chains.
By narrowing [15] the rule MARK(and(X1, X2)) → A__AND(mark(X1), mark(X2)) at position [0] we obtained the following new rules:

MARK(and(nil, y1)) → A__AND(nil, mark(y1))
MARK(and(uLength(x0, x1), y1)) → A__AND(a__uLength(mark(x0), x1), mark(y1))
MARK(and(length(x0), y1)) → A__AND(a__length(mark(x0)), mark(y1))
MARK(and(tt, y1)) → A__AND(tt, mark(y1))
MARK(and(cons(x0, x1), y1)) → A__AND(cons(mark(x0), x1), mark(y1))
MARK(and(uTake1(x0), y1)) → A__AND(a__uTake1(mark(x0)), mark(y1))
MARK(and(0, y1)) → A__AND(0, mark(y1))
MARK(and(isNatList(x0), y1)) → A__AND(a__isNatList(x0), mark(y1))
MARK(and(zeros, y1)) → A__AND(a__zeros, mark(y1))
MARK(and(and(x0, x1), y1)) → A__AND(a__and(mark(x0), mark(x1)), mark(y1))
MARK(and(s(x0), y1)) → A__AND(s(mark(x0)), mark(y1))
MARK(and(isNat(x0), y1)) → A__AND(a__isNat(x0), mark(y1))
MARK(and(uTake2(x0, x1, x2, x3), y1)) → A__AND(a__uTake2(mark(x0), x1, x2, x3), mark(y1))
MARK(and(take(x0, x1), y1)) → A__AND(a__take(mark(x0), mark(x1)), mark(y1))
MARK(and(isNatIList(x0), y1)) → A__AND(a__isNatIList(x0), mark(y1))



↳ QTRS
  ↳ DependencyPairsProof
    ↳ QDP
      ↳ DependencyGraphProof
        ↳ QDP
          ↳ QDPOrderProof
            ↳ QDP
              ↳ DependencyGraphProof
                ↳ AND
                  ↳ QDP
                    ↳ QDPOrderProof
                      ↳ QDP
                        ↳ DependencyGraphProof
                          ↳ QDP
                            ↳ QDPOrderProof
                              ↳ QDP
                                ↳ DependencyGraphProof
                                  ↳ QDP
                                    ↳ QDPOrderProof
                                      ↳ QDP
                                        ↳ QDPOrderProof
                                          ↳ QDP
                                            ↳ QDPOrderProof
                                              ↳ QDP
                                                ↳ DependencyGraphProof
                                                  ↳ AND
                                                    ↳ QDP
                                                    ↳ QDP
                                                      ↳ QDPOrderProof
                                                        ↳ QDP
                                                          ↳ QDPOrderProof
                                                            ↳ QDP
                                                              ↳ Narrowing
                                                                ↳ QDP
                                                                  ↳ DependencyGraphProof
                                                                    ↳ QDP
                                                                      ↳ Narrowing
QDP
                                                                          ↳ DependencyGraphProof
                  ↳ QDP

Q DP problem:
The TRS P consists of the following rules:

MARK(and(nil, y1)) → A__AND(nil, mark(y1))
A__ISNATLIST(cons(N, L)) → A__ISNATLIST(L)
A__ISNATILIST(cons(N, IL)) → A__ISNATILIST(IL)
MARK(and(uLength(x0, x1), y1)) → A__AND(a__uLength(mark(x0), x1), mark(y1))
MARK(isNatIList(X)) → A__ISNATILIST(X)
MARK(and(length(x0), y1)) → A__AND(a__length(mark(x0)), mark(y1))
MARK(and(tt, y1)) → A__AND(tt, mark(y1))
MARK(and(uTake1(x0), y1)) → A__AND(a__uTake1(mark(x0)), mark(y1))
A__AND(tt, T) → MARK(T)
MARK(and(and(x0, x1), y1)) → A__AND(a__and(mark(x0), mark(x1)), mark(y1))
A__ISNATLIST(cons(s(x0), y1)) → A__AND(a__isNat(x0), a__isNatList(y1))
MARK(and(X1, X2)) → MARK(X1)
MARK(and(uTake2(x0, x1, x2, x3), y1)) → A__AND(a__uTake2(mark(x0), x1, x2, x3), mark(y1))
MARK(and(isNatIList(x0), y1)) → A__AND(a__isNatIList(x0), mark(y1))
MARK(and(X1, X2)) → MARK(X2)
A__ISNATLIST(cons(length(x0), y1)) → A__AND(a__isNatList(x0), a__isNatList(y1))
MARK(and(cons(x0, x1), y1)) → A__AND(cons(mark(x0), x1), mark(y1))
MARK(and(0, y1)) → A__AND(0, mark(y1))
A__ISNATILIST(cons(N, IL)) → A__AND(a__isNat(N), a__isNatIList(IL))
A__ISNATLIST(cons(0, y1)) → A__AND(tt, a__isNatList(y1))
MARK(and(isNatList(x0), y1)) → A__AND(a__isNatList(x0), mark(y1))
MARK(and(zeros, y1)) → A__AND(a__zeros, mark(y1))
MARK(and(s(x0), y1)) → A__AND(s(mark(x0)), mark(y1))
MARK(and(isNat(x0), y1)) → A__AND(a__isNat(x0), mark(y1))
MARK(isNatList(X)) → A__ISNATLIST(X)
MARK(and(take(x0, x1), y1)) → A__AND(a__take(mark(x0), mark(x1)), mark(y1))

The TRS R consists of the following rules:

a__and(tt, T) → mark(T)
a__isNatIList(IL) → a__isNatList(IL)
a__isNat(0) → tt
a__isNat(s(N)) → a__isNat(N)
a__isNat(length(L)) → a__isNatList(L)
a__isNatIList(zeros) → tt
a__isNatIList(cons(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__isNatList(nil) → tt
a__isNatList(cons(N, L)) → a__and(a__isNat(N), a__isNatList(L))
a__isNatList(take(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__zeroscons(0, zeros)
a__take(0, IL) → a__uTake1(a__isNatIList(IL))
a__uTake1(tt) → nil
a__take(s(M), cons(N, IL)) → a__uTake2(a__and(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL))), M, N, IL)
a__uTake2(tt, M, N, IL) → cons(mark(N), take(M, IL))
a__length(cons(N, L)) → a__uLength(a__and(a__isNat(N), a__isNatList(L)), L)
a__uLength(tt, L) → s(a__length(mark(L)))
mark(and(X1, X2)) → a__and(mark(X1), mark(X2))
mark(isNatIList(X)) → a__isNatIList(X)
mark(isNatList(X)) → a__isNatList(X)
mark(isNat(X)) → a__isNat(X)
mark(length(X)) → a__length(mark(X))
mark(zeros) → a__zeros
mark(take(X1, X2)) → a__take(mark(X1), mark(X2))
mark(uTake1(X)) → a__uTake1(mark(X))
mark(uTake2(X1, X2, X3, X4)) → a__uTake2(mark(X1), X2, X3, X4)
mark(uLength(X1, X2)) → a__uLength(mark(X1), X2)
mark(tt) → tt
mark(0) → 0
mark(s(X)) → s(mark(X))
mark(cons(X1, X2)) → cons(mark(X1), X2)
mark(nil) → nil
a__and(X1, X2) → and(X1, X2)
a__isNatIList(X) → isNatIList(X)
a__isNatList(X) → isNatList(X)
a__isNat(X) → isNat(X)
a__length(X) → length(X)
a__zeroszeros
a__take(X1, X2) → take(X1, X2)
a__uTake1(X) → uTake1(X)
a__uTake2(X1, X2, X3, X4) → uTake2(X1, X2, X3, X4)
a__uLength(X1, X2) → uLength(X1, X2)

Q is empty.
We have to consider all minimal (P,Q,R)-chains.
The approximation of the Dependency Graph [15,17,22] contains 1 SCC with 4 less nodes.

↳ QTRS
  ↳ DependencyPairsProof
    ↳ QDP
      ↳ DependencyGraphProof
        ↳ QDP
          ↳ QDPOrderProof
            ↳ QDP
              ↳ DependencyGraphProof
                ↳ AND
                  ↳ QDP
                    ↳ QDPOrderProof
                      ↳ QDP
                        ↳ DependencyGraphProof
                          ↳ QDP
                            ↳ QDPOrderProof
                              ↳ QDP
                                ↳ DependencyGraphProof
                                  ↳ QDP
                                    ↳ QDPOrderProof
                                      ↳ QDP
                                        ↳ QDPOrderProof
                                          ↳ QDP
                                            ↳ QDPOrderProof
                                              ↳ QDP
                                                ↳ DependencyGraphProof
                                                  ↳ AND
                                                    ↳ QDP
                                                    ↳ QDP
                                                      ↳ QDPOrderProof
                                                        ↳ QDP
                                                          ↳ QDPOrderProof
                                                            ↳ QDP
                                                              ↳ Narrowing
                                                                ↳ QDP
                                                                  ↳ DependencyGraphProof
                                                                    ↳ QDP
                                                                      ↳ Narrowing
                                                                        ↳ QDP
                                                                          ↳ DependencyGraphProof
QDP
                                                                              ↳ Narrowing
                  ↳ QDP

Q DP problem:
The TRS P consists of the following rules:

A__ISNATLIST(cons(N, L)) → A__ISNATLIST(L)
A__ISNATILIST(cons(N, IL)) → A__ISNATILIST(IL)
MARK(and(uLength(x0, x1), y1)) → A__AND(a__uLength(mark(x0), x1), mark(y1))
A__ISNATLIST(cons(length(x0), y1)) → A__AND(a__isNatList(x0), a__isNatList(y1))
MARK(isNatIList(X)) → A__ISNATILIST(X)
MARK(and(tt, y1)) → A__AND(tt, mark(y1))
MARK(and(length(x0), y1)) → A__AND(a__length(mark(x0)), mark(y1))
MARK(and(uTake1(x0), y1)) → A__AND(a__uTake1(mark(x0)), mark(y1))
A__AND(tt, T) → MARK(T)
A__ISNATILIST(cons(N, IL)) → A__AND(a__isNat(N), a__isNatIList(IL))
MARK(and(isNatList(x0), y1)) → A__AND(a__isNatList(x0), mark(y1))
A__ISNATLIST(cons(0, y1)) → A__AND(tt, a__isNatList(y1))
MARK(and(and(x0, x1), y1)) → A__AND(a__and(mark(x0), mark(x1)), mark(y1))
MARK(and(zeros, y1)) → A__AND(a__zeros, mark(y1))
MARK(and(isNat(x0), y1)) → A__AND(a__isNat(x0), mark(y1))
A__ISNATLIST(cons(s(x0), y1)) → A__AND(a__isNat(x0), a__isNatList(y1))
MARK(and(X1, X2)) → MARK(X1)
MARK(and(uTake2(x0, x1, x2, x3), y1)) → A__AND(a__uTake2(mark(x0), x1, x2, x3), mark(y1))
MARK(isNatList(X)) → A__ISNATLIST(X)
MARK(and(isNatIList(x0), y1)) → A__AND(a__isNatIList(x0), mark(y1))
MARK(and(take(x0, x1), y1)) → A__AND(a__take(mark(x0), mark(x1)), mark(y1))
MARK(and(X1, X2)) → MARK(X2)

The TRS R consists of the following rules:

a__and(tt, T) → mark(T)
a__isNatIList(IL) → a__isNatList(IL)
a__isNat(0) → tt
a__isNat(s(N)) → a__isNat(N)
a__isNat(length(L)) → a__isNatList(L)
a__isNatIList(zeros) → tt
a__isNatIList(cons(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__isNatList(nil) → tt
a__isNatList(cons(N, L)) → a__and(a__isNat(N), a__isNatList(L))
a__isNatList(take(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__zeroscons(0, zeros)
a__take(0, IL) → a__uTake1(a__isNatIList(IL))
a__uTake1(tt) → nil
a__take(s(M), cons(N, IL)) → a__uTake2(a__and(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL))), M, N, IL)
a__uTake2(tt, M, N, IL) → cons(mark(N), take(M, IL))
a__length(cons(N, L)) → a__uLength(a__and(a__isNat(N), a__isNatList(L)), L)
a__uLength(tt, L) → s(a__length(mark(L)))
mark(and(X1, X2)) → a__and(mark(X1), mark(X2))
mark(isNatIList(X)) → a__isNatIList(X)
mark(isNatList(X)) → a__isNatList(X)
mark(isNat(X)) → a__isNat(X)
mark(length(X)) → a__length(mark(X))
mark(zeros) → a__zeros
mark(take(X1, X2)) → a__take(mark(X1), mark(X2))
mark(uTake1(X)) → a__uTake1(mark(X))
mark(uTake2(X1, X2, X3, X4)) → a__uTake2(mark(X1), X2, X3, X4)
mark(uLength(X1, X2)) → a__uLength(mark(X1), X2)
mark(tt) → tt
mark(0) → 0
mark(s(X)) → s(mark(X))
mark(cons(X1, X2)) → cons(mark(X1), X2)
mark(nil) → nil
a__and(X1, X2) → and(X1, X2)
a__isNatIList(X) → isNatIList(X)
a__isNatList(X) → isNatList(X)
a__isNat(X) → isNat(X)
a__length(X) → length(X)
a__zeroszeros
a__take(X1, X2) → take(X1, X2)
a__uTake1(X) → uTake1(X)
a__uTake2(X1, X2, X3, X4) → uTake2(X1, X2, X3, X4)
a__uLength(X1, X2) → uLength(X1, X2)

Q is empty.
We have to consider all minimal (P,Q,R)-chains.
By narrowing [15] the rule A__ISNATILIST(cons(N, IL)) → A__AND(a__isNat(N), a__isNatIList(IL)) at position [0] we obtained the following new rules:

A__ISNATILIST(cons(length(x0), y1)) → A__AND(a__isNatList(x0), a__isNatIList(y1))
A__ISNATILIST(cons(x0, y1)) → A__AND(isNat(x0), a__isNatIList(y1))
A__ISNATILIST(cons(0, y1)) → A__AND(tt, a__isNatIList(y1))
A__ISNATILIST(cons(s(x0), y1)) → A__AND(a__isNat(x0), a__isNatIList(y1))



↳ QTRS
  ↳ DependencyPairsProof
    ↳ QDP
      ↳ DependencyGraphProof
        ↳ QDP
          ↳ QDPOrderProof
            ↳ QDP
              ↳ DependencyGraphProof
                ↳ AND
                  ↳ QDP
                    ↳ QDPOrderProof
                      ↳ QDP
                        ↳ DependencyGraphProof
                          ↳ QDP
                            ↳ QDPOrderProof
                              ↳ QDP
                                ↳ DependencyGraphProof
                                  ↳ QDP
                                    ↳ QDPOrderProof
                                      ↳ QDP
                                        ↳ QDPOrderProof
                                          ↳ QDP
                                            ↳ QDPOrderProof
                                              ↳ QDP
                                                ↳ DependencyGraphProof
                                                  ↳ AND
                                                    ↳ QDP
                                                    ↳ QDP
                                                      ↳ QDPOrderProof
                                                        ↳ QDP
                                                          ↳ QDPOrderProof
                                                            ↳ QDP
                                                              ↳ Narrowing
                                                                ↳ QDP
                                                                  ↳ DependencyGraphProof
                                                                    ↳ QDP
                                                                      ↳ Narrowing
                                                                        ↳ QDP
                                                                          ↳ DependencyGraphProof
                                                                            ↳ QDP
                                                                              ↳ Narrowing
QDP
                                                                                  ↳ DependencyGraphProof
                  ↳ QDP

Q DP problem:
The TRS P consists of the following rules:

A__ISNATILIST(cons(length(x0), y1)) → A__AND(a__isNatList(x0), a__isNatIList(y1))
A__ISNATLIST(cons(N, L)) → A__ISNATLIST(L)
A__ISNATILIST(cons(N, IL)) → A__ISNATILIST(IL)
MARK(and(uLength(x0, x1), y1)) → A__AND(a__uLength(mark(x0), x1), mark(y1))
MARK(isNatIList(X)) → A__ISNATILIST(X)
MARK(and(tt, y1)) → A__AND(tt, mark(y1))
MARK(and(length(x0), y1)) → A__AND(a__length(mark(x0)), mark(y1))
A__ISNATILIST(cons(x0, y1)) → A__AND(isNat(x0), a__isNatIList(y1))
A__ISNATILIST(cons(0, y1)) → A__AND(tt, a__isNatIList(y1))
MARK(and(uTake1(x0), y1)) → A__AND(a__uTake1(mark(x0)), mark(y1))
A__AND(tt, T) → MARK(T)
MARK(and(and(x0, x1), y1)) → A__AND(a__and(mark(x0), mark(x1)), mark(y1))
A__ISNATLIST(cons(s(x0), y1)) → A__AND(a__isNat(x0), a__isNatList(y1))
MARK(and(X1, X2)) → MARK(X1)
MARK(and(uTake2(x0, x1, x2, x3), y1)) → A__AND(a__uTake2(mark(x0), x1, x2, x3), mark(y1))
MARK(and(isNatIList(x0), y1)) → A__AND(a__isNatIList(x0), mark(y1))
MARK(and(X1, X2)) → MARK(X2)
A__ISNATILIST(cons(s(x0), y1)) → A__AND(a__isNat(x0), a__isNatIList(y1))
A__ISNATLIST(cons(length(x0), y1)) → A__AND(a__isNatList(x0), a__isNatList(y1))
MARK(and(isNatList(x0), y1)) → A__AND(a__isNatList(x0), mark(y1))
A__ISNATLIST(cons(0, y1)) → A__AND(tt, a__isNatList(y1))
MARK(and(zeros, y1)) → A__AND(a__zeros, mark(y1))
MARK(and(isNat(x0), y1)) → A__AND(a__isNat(x0), mark(y1))
MARK(isNatList(X)) → A__ISNATLIST(X)
MARK(and(take(x0, x1), y1)) → A__AND(a__take(mark(x0), mark(x1)), mark(y1))

The TRS R consists of the following rules:

a__and(tt, T) → mark(T)
a__isNatIList(IL) → a__isNatList(IL)
a__isNat(0) → tt
a__isNat(s(N)) → a__isNat(N)
a__isNat(length(L)) → a__isNatList(L)
a__isNatIList(zeros) → tt
a__isNatIList(cons(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__isNatList(nil) → tt
a__isNatList(cons(N, L)) → a__and(a__isNat(N), a__isNatList(L))
a__isNatList(take(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__zeroscons(0, zeros)
a__take(0, IL) → a__uTake1(a__isNatIList(IL))
a__uTake1(tt) → nil
a__take(s(M), cons(N, IL)) → a__uTake2(a__and(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL))), M, N, IL)
a__uTake2(tt, M, N, IL) → cons(mark(N), take(M, IL))
a__length(cons(N, L)) → a__uLength(a__and(a__isNat(N), a__isNatList(L)), L)
a__uLength(tt, L) → s(a__length(mark(L)))
mark(and(X1, X2)) → a__and(mark(X1), mark(X2))
mark(isNatIList(X)) → a__isNatIList(X)
mark(isNatList(X)) → a__isNatList(X)
mark(isNat(X)) → a__isNat(X)
mark(length(X)) → a__length(mark(X))
mark(zeros) → a__zeros
mark(take(X1, X2)) → a__take(mark(X1), mark(X2))
mark(uTake1(X)) → a__uTake1(mark(X))
mark(uTake2(X1, X2, X3, X4)) → a__uTake2(mark(X1), X2, X3, X4)
mark(uLength(X1, X2)) → a__uLength(mark(X1), X2)
mark(tt) → tt
mark(0) → 0
mark(s(X)) → s(mark(X))
mark(cons(X1, X2)) → cons(mark(X1), X2)
mark(nil) → nil
a__and(X1, X2) → and(X1, X2)
a__isNatIList(X) → isNatIList(X)
a__isNatList(X) → isNatList(X)
a__isNat(X) → isNat(X)
a__length(X) → length(X)
a__zeroszeros
a__take(X1, X2) → take(X1, X2)
a__uTake1(X) → uTake1(X)
a__uTake2(X1, X2, X3, X4) → uTake2(X1, X2, X3, X4)
a__uLength(X1, X2) → uLength(X1, X2)

Q is empty.
We have to consider all minimal (P,Q,R)-chains.
The approximation of the Dependency Graph [15,17,22] contains 1 SCC with 1 less node.

↳ QTRS
  ↳ DependencyPairsProof
    ↳ QDP
      ↳ DependencyGraphProof
        ↳ QDP
          ↳ QDPOrderProof
            ↳ QDP
              ↳ DependencyGraphProof
                ↳ AND
                  ↳ QDP
                    ↳ QDPOrderProof
                      ↳ QDP
                        ↳ DependencyGraphProof
                          ↳ QDP
                            ↳ QDPOrderProof
                              ↳ QDP
                                ↳ DependencyGraphProof
                                  ↳ QDP
                                    ↳ QDPOrderProof
                                      ↳ QDP
                                        ↳ QDPOrderProof
                                          ↳ QDP
                                            ↳ QDPOrderProof
                                              ↳ QDP
                                                ↳ DependencyGraphProof
                                                  ↳ AND
                                                    ↳ QDP
                                                    ↳ QDP
                                                      ↳ QDPOrderProof
                                                        ↳ QDP
                                                          ↳ QDPOrderProof
                                                            ↳ QDP
                                                              ↳ Narrowing
                                                                ↳ QDP
                                                                  ↳ DependencyGraphProof
                                                                    ↳ QDP
                                                                      ↳ Narrowing
                                                                        ↳ QDP
                                                                          ↳ DependencyGraphProof
                                                                            ↳ QDP
                                                                              ↳ Narrowing
                                                                                ↳ QDP
                                                                                  ↳ DependencyGraphProof
QDP
                                                                                      ↳ Narrowing
                  ↳ QDP

Q DP problem:
The TRS P consists of the following rules:

A__ISNATILIST(cons(length(x0), y1)) → A__AND(a__isNatList(x0), a__isNatIList(y1))
A__ISNATLIST(cons(N, L)) → A__ISNATLIST(L)
A__ISNATILIST(cons(N, IL)) → A__ISNATILIST(IL)
MARK(and(uLength(x0, x1), y1)) → A__AND(a__uLength(mark(x0), x1), mark(y1))
A__ISNATILIST(cons(s(x0), y1)) → A__AND(a__isNat(x0), a__isNatIList(y1))
A__ISNATLIST(cons(length(x0), y1)) → A__AND(a__isNatList(x0), a__isNatList(y1))
MARK(isNatIList(X)) → A__ISNATILIST(X)
MARK(and(tt, y1)) → A__AND(tt, mark(y1))
MARK(and(length(x0), y1)) → A__AND(a__length(mark(x0)), mark(y1))
A__ISNATILIST(cons(0, y1)) → A__AND(tt, a__isNatIList(y1))
MARK(and(uTake1(x0), y1)) → A__AND(a__uTake1(mark(x0)), mark(y1))
A__AND(tt, T) → MARK(T)
MARK(and(isNatList(x0), y1)) → A__AND(a__isNatList(x0), mark(y1))
A__ISNATLIST(cons(0, y1)) → A__AND(tt, a__isNatList(y1))
MARK(and(and(x0, x1), y1)) → A__AND(a__and(mark(x0), mark(x1)), mark(y1))
MARK(and(zeros, y1)) → A__AND(a__zeros, mark(y1))
MARK(and(isNat(x0), y1)) → A__AND(a__isNat(x0), mark(y1))
A__ISNATLIST(cons(s(x0), y1)) → A__AND(a__isNat(x0), a__isNatList(y1))
MARK(and(X1, X2)) → MARK(X1)
MARK(and(uTake2(x0, x1, x2, x3), y1)) → A__AND(a__uTake2(mark(x0), x1, x2, x3), mark(y1))
MARK(isNatList(X)) → A__ISNATLIST(X)
MARK(and(isNatIList(x0), y1)) → A__AND(a__isNatIList(x0), mark(y1))
MARK(and(take(x0, x1), y1)) → A__AND(a__take(mark(x0), mark(x1)), mark(y1))
MARK(and(X1, X2)) → MARK(X2)

The TRS R consists of the following rules:

a__and(tt, T) → mark(T)
a__isNatIList(IL) → a__isNatList(IL)
a__isNat(0) → tt
a__isNat(s(N)) → a__isNat(N)
a__isNat(length(L)) → a__isNatList(L)
a__isNatIList(zeros) → tt
a__isNatIList(cons(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__isNatList(nil) → tt
a__isNatList(cons(N, L)) → a__and(a__isNat(N), a__isNatList(L))
a__isNatList(take(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__zeroscons(0, zeros)
a__take(0, IL) → a__uTake1(a__isNatIList(IL))
a__uTake1(tt) → nil
a__take(s(M), cons(N, IL)) → a__uTake2(a__and(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL))), M, N, IL)
a__uTake2(tt, M, N, IL) → cons(mark(N), take(M, IL))
a__length(cons(N, L)) → a__uLength(a__and(a__isNat(N), a__isNatList(L)), L)
a__uLength(tt, L) → s(a__length(mark(L)))
mark(and(X1, X2)) → a__and(mark(X1), mark(X2))
mark(isNatIList(X)) → a__isNatIList(X)
mark(isNatList(X)) → a__isNatList(X)
mark(isNat(X)) → a__isNat(X)
mark(length(X)) → a__length(mark(X))
mark(zeros) → a__zeros
mark(take(X1, X2)) → a__take(mark(X1), mark(X2))
mark(uTake1(X)) → a__uTake1(mark(X))
mark(uTake2(X1, X2, X3, X4)) → a__uTake2(mark(X1), X2, X3, X4)
mark(uLength(X1, X2)) → a__uLength(mark(X1), X2)
mark(tt) → tt
mark(0) → 0
mark(s(X)) → s(mark(X))
mark(cons(X1, X2)) → cons(mark(X1), X2)
mark(nil) → nil
a__and(X1, X2) → and(X1, X2)
a__isNatIList(X) → isNatIList(X)
a__isNatList(X) → isNatList(X)
a__isNat(X) → isNat(X)
a__length(X) → length(X)
a__zeroszeros
a__take(X1, X2) → take(X1, X2)
a__uTake1(X) → uTake1(X)
a__uTake2(X1, X2, X3, X4) → uTake2(X1, X2, X3, X4)
a__uLength(X1, X2) → uLength(X1, X2)

Q is empty.
We have to consider all minimal (P,Q,R)-chains.
By narrowing [15] the rule MARK(and(zeros, y1)) → A__AND(a__zeros, mark(y1)) at position [0] we obtained the following new rules:

MARK(and(zeros, y0)) → A__AND(zeros, mark(y0))
MARK(and(zeros, y0)) → A__AND(cons(0, zeros), mark(y0))



↳ QTRS
  ↳ DependencyPairsProof
    ↳ QDP
      ↳ DependencyGraphProof
        ↳ QDP
          ↳ QDPOrderProof
            ↳ QDP
              ↳ DependencyGraphProof
                ↳ AND
                  ↳ QDP
                    ↳ QDPOrderProof
                      ↳ QDP
                        ↳ DependencyGraphProof
                          ↳ QDP
                            ↳ QDPOrderProof
                              ↳ QDP
                                ↳ DependencyGraphProof
                                  ↳ QDP
                                    ↳ QDPOrderProof
                                      ↳ QDP
                                        ↳ QDPOrderProof
                                          ↳ QDP
                                            ↳ QDPOrderProof
                                              ↳ QDP
                                                ↳ DependencyGraphProof
                                                  ↳ AND
                                                    ↳ QDP
                                                    ↳ QDP
                                                      ↳ QDPOrderProof
                                                        ↳ QDP
                                                          ↳ QDPOrderProof
                                                            ↳ QDP
                                                              ↳ Narrowing
                                                                ↳ QDP
                                                                  ↳ DependencyGraphProof
                                                                    ↳ QDP
                                                                      ↳ Narrowing
                                                                        ↳ QDP
                                                                          ↳ DependencyGraphProof
                                                                            ↳ QDP
                                                                              ↳ Narrowing
                                                                                ↳ QDP
                                                                                  ↳ DependencyGraphProof
                                                                                    ↳ QDP
                                                                                      ↳ Narrowing
QDP
                                                                                          ↳ DependencyGraphProof
                  ↳ QDP

Q DP problem:
The TRS P consists of the following rules:

A__ISNATILIST(cons(length(x0), y1)) → A__AND(a__isNatList(x0), a__isNatIList(y1))
A__ISNATLIST(cons(N, L)) → A__ISNATLIST(L)
A__ISNATILIST(cons(N, IL)) → A__ISNATILIST(IL)
MARK(and(uLength(x0, x1), y1)) → A__AND(a__uLength(mark(x0), x1), mark(y1))
MARK(isNatIList(X)) → A__ISNATILIST(X)
MARK(and(length(x0), y1)) → A__AND(a__length(mark(x0)), mark(y1))
MARK(and(tt, y1)) → A__AND(tt, mark(y1))
A__ISNATILIST(cons(0, y1)) → A__AND(tt, a__isNatIList(y1))
MARK(and(uTake1(x0), y1)) → A__AND(a__uTake1(mark(x0)), mark(y1))
A__AND(tt, T) → MARK(T)
MARK(and(and(x0, x1), y1)) → A__AND(a__and(mark(x0), mark(x1)), mark(y1))
A__ISNATLIST(cons(s(x0), y1)) → A__AND(a__isNat(x0), a__isNatList(y1))
MARK(and(X1, X2)) → MARK(X1)
MARK(and(uTake2(x0, x1, x2, x3), y1)) → A__AND(a__uTake2(mark(x0), x1, x2, x3), mark(y1))
MARK(and(isNatIList(x0), y1)) → A__AND(a__isNatIList(x0), mark(y1))
MARK(and(X1, X2)) → MARK(X2)
MARK(and(zeros, y0)) → A__AND(cons(0, zeros), mark(y0))
A__ISNATILIST(cons(s(x0), y1)) → A__AND(a__isNat(x0), a__isNatIList(y1))
A__ISNATLIST(cons(length(x0), y1)) → A__AND(a__isNatList(x0), a__isNatList(y1))
A__ISNATLIST(cons(0, y1)) → A__AND(tt, a__isNatList(y1))
MARK(and(isNatList(x0), y1)) → A__AND(a__isNatList(x0), mark(y1))
MARK(and(zeros, y0)) → A__AND(zeros, mark(y0))
MARK(and(isNat(x0), y1)) → A__AND(a__isNat(x0), mark(y1))
MARK(isNatList(X)) → A__ISNATLIST(X)
MARK(and(take(x0, x1), y1)) → A__AND(a__take(mark(x0), mark(x1)), mark(y1))

The TRS R consists of the following rules:

a__and(tt, T) → mark(T)
a__isNatIList(IL) → a__isNatList(IL)
a__isNat(0) → tt
a__isNat(s(N)) → a__isNat(N)
a__isNat(length(L)) → a__isNatList(L)
a__isNatIList(zeros) → tt
a__isNatIList(cons(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__isNatList(nil) → tt
a__isNatList(cons(N, L)) → a__and(a__isNat(N), a__isNatList(L))
a__isNatList(take(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__zeroscons(0, zeros)
a__take(0, IL) → a__uTake1(a__isNatIList(IL))
a__uTake1(tt) → nil
a__take(s(M), cons(N, IL)) → a__uTake2(a__and(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL))), M, N, IL)
a__uTake2(tt, M, N, IL) → cons(mark(N), take(M, IL))
a__length(cons(N, L)) → a__uLength(a__and(a__isNat(N), a__isNatList(L)), L)
a__uLength(tt, L) → s(a__length(mark(L)))
mark(and(X1, X2)) → a__and(mark(X1), mark(X2))
mark(isNatIList(X)) → a__isNatIList(X)
mark(isNatList(X)) → a__isNatList(X)
mark(isNat(X)) → a__isNat(X)
mark(length(X)) → a__length(mark(X))
mark(zeros) → a__zeros
mark(take(X1, X2)) → a__take(mark(X1), mark(X2))
mark(uTake1(X)) → a__uTake1(mark(X))
mark(uTake2(X1, X2, X3, X4)) → a__uTake2(mark(X1), X2, X3, X4)
mark(uLength(X1, X2)) → a__uLength(mark(X1), X2)
mark(tt) → tt
mark(0) → 0
mark(s(X)) → s(mark(X))
mark(cons(X1, X2)) → cons(mark(X1), X2)
mark(nil) → nil
a__and(X1, X2) → and(X1, X2)
a__isNatIList(X) → isNatIList(X)
a__isNatList(X) → isNatList(X)
a__isNat(X) → isNat(X)
a__length(X) → length(X)
a__zeroszeros
a__take(X1, X2) → take(X1, X2)
a__uTake1(X) → uTake1(X)
a__uTake2(X1, X2, X3, X4) → uTake2(X1, X2, X3, X4)
a__uLength(X1, X2) → uLength(X1, X2)

Q is empty.
We have to consider all minimal (P,Q,R)-chains.
The approximation of the Dependency Graph [15,17,22] contains 1 SCC with 2 less nodes.

↳ QTRS
  ↳ DependencyPairsProof
    ↳ QDP
      ↳ DependencyGraphProof
        ↳ QDP
          ↳ QDPOrderProof
            ↳ QDP
              ↳ DependencyGraphProof
                ↳ AND
                  ↳ QDP
                    ↳ QDPOrderProof
                      ↳ QDP
                        ↳ DependencyGraphProof
                          ↳ QDP
                            ↳ QDPOrderProof
                              ↳ QDP
                                ↳ DependencyGraphProof
                                  ↳ QDP
                                    ↳ QDPOrderProof
                                      ↳ QDP
                                        ↳ QDPOrderProof
                                          ↳ QDP
                                            ↳ QDPOrderProof
                                              ↳ QDP
                                                ↳ DependencyGraphProof
                                                  ↳ AND
                                                    ↳ QDP
                                                    ↳ QDP
                                                      ↳ QDPOrderProof
                                                        ↳ QDP
                                                          ↳ QDPOrderProof
                                                            ↳ QDP
                                                              ↳ Narrowing
                                                                ↳ QDP
                                                                  ↳ DependencyGraphProof
                                                                    ↳ QDP
                                                                      ↳ Narrowing
                                                                        ↳ QDP
                                                                          ↳ DependencyGraphProof
                                                                            ↳ QDP
                                                                              ↳ Narrowing
                                                                                ↳ QDP
                                                                                  ↳ DependencyGraphProof
                                                                                    ↳ QDP
                                                                                      ↳ Narrowing
                                                                                        ↳ QDP
                                                                                          ↳ DependencyGraphProof
QDP
                                                                                              ↳ QDPOrderProof
                  ↳ QDP

Q DP problem:
The TRS P consists of the following rules:

A__ISNATILIST(cons(length(x0), y1)) → A__AND(a__isNatList(x0), a__isNatIList(y1))
A__ISNATLIST(cons(N, L)) → A__ISNATLIST(L)
A__ISNATILIST(cons(N, IL)) → A__ISNATILIST(IL)
MARK(and(uLength(x0, x1), y1)) → A__AND(a__uLength(mark(x0), x1), mark(y1))
A__ISNATILIST(cons(s(x0), y1)) → A__AND(a__isNat(x0), a__isNatIList(y1))
A__ISNATLIST(cons(length(x0), y1)) → A__AND(a__isNatList(x0), a__isNatList(y1))
MARK(isNatIList(X)) → A__ISNATILIST(X)
MARK(and(tt, y1)) → A__AND(tt, mark(y1))
MARK(and(length(x0), y1)) → A__AND(a__length(mark(x0)), mark(y1))
A__ISNATILIST(cons(0, y1)) → A__AND(tt, a__isNatIList(y1))
MARK(and(uTake1(x0), y1)) → A__AND(a__uTake1(mark(x0)), mark(y1))
A__AND(tt, T) → MARK(T)
MARK(and(isNatList(x0), y1)) → A__AND(a__isNatList(x0), mark(y1))
A__ISNATLIST(cons(0, y1)) → A__AND(tt, a__isNatList(y1))
MARK(and(and(x0, x1), y1)) → A__AND(a__and(mark(x0), mark(x1)), mark(y1))
MARK(and(isNat(x0), y1)) → A__AND(a__isNat(x0), mark(y1))
A__ISNATLIST(cons(s(x0), y1)) → A__AND(a__isNat(x0), a__isNatList(y1))
MARK(and(X1, X2)) → MARK(X1)
MARK(and(uTake2(x0, x1, x2, x3), y1)) → A__AND(a__uTake2(mark(x0), x1, x2, x3), mark(y1))
MARK(isNatList(X)) → A__ISNATLIST(X)
MARK(and(isNatIList(x0), y1)) → A__AND(a__isNatIList(x0), mark(y1))
MARK(and(take(x0, x1), y1)) → A__AND(a__take(mark(x0), mark(x1)), mark(y1))
MARK(and(X1, X2)) → MARK(X2)

The TRS R consists of the following rules:

a__and(tt, T) → mark(T)
a__isNatIList(IL) → a__isNatList(IL)
a__isNat(0) → tt
a__isNat(s(N)) → a__isNat(N)
a__isNat(length(L)) → a__isNatList(L)
a__isNatIList(zeros) → tt
a__isNatIList(cons(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__isNatList(nil) → tt
a__isNatList(cons(N, L)) → a__and(a__isNat(N), a__isNatList(L))
a__isNatList(take(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__zeroscons(0, zeros)
a__take(0, IL) → a__uTake1(a__isNatIList(IL))
a__uTake1(tt) → nil
a__take(s(M), cons(N, IL)) → a__uTake2(a__and(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL))), M, N, IL)
a__uTake2(tt, M, N, IL) → cons(mark(N), take(M, IL))
a__length(cons(N, L)) → a__uLength(a__and(a__isNat(N), a__isNatList(L)), L)
a__uLength(tt, L) → s(a__length(mark(L)))
mark(and(X1, X2)) → a__and(mark(X1), mark(X2))
mark(isNatIList(X)) → a__isNatIList(X)
mark(isNatList(X)) → a__isNatList(X)
mark(isNat(X)) → a__isNat(X)
mark(length(X)) → a__length(mark(X))
mark(zeros) → a__zeros
mark(take(X1, X2)) → a__take(mark(X1), mark(X2))
mark(uTake1(X)) → a__uTake1(mark(X))
mark(uTake2(X1, X2, X3, X4)) → a__uTake2(mark(X1), X2, X3, X4)
mark(uLength(X1, X2)) → a__uLength(mark(X1), X2)
mark(tt) → tt
mark(0) → 0
mark(s(X)) → s(mark(X))
mark(cons(X1, X2)) → cons(mark(X1), X2)
mark(nil) → nil
a__and(X1, X2) → and(X1, X2)
a__isNatIList(X) → isNatIList(X)
a__isNatList(X) → isNatList(X)
a__isNat(X) → isNat(X)
a__length(X) → length(X)
a__zeroszeros
a__take(X1, X2) → take(X1, X2)
a__uTake1(X) → uTake1(X)
a__uTake2(X1, X2, X3, X4) → uTake2(X1, X2, X3, X4)
a__uLength(X1, X2) → uLength(X1, X2)

Q is empty.
We have to consider all minimal (P,Q,R)-chains.
We use the reduction pair processor [15].


The following pairs can be oriented strictly and are deleted.


MARK(and(take(x0, x1), y1)) → A__AND(a__take(mark(x0), mark(x1)), mark(y1))
The remaining pairs can at least be oriented weakly.

A__ISNATILIST(cons(length(x0), y1)) → A__AND(a__isNatList(x0), a__isNatIList(y1))
A__ISNATLIST(cons(N, L)) → A__ISNATLIST(L)
A__ISNATILIST(cons(N, IL)) → A__ISNATILIST(IL)
MARK(and(uLength(x0, x1), y1)) → A__AND(a__uLength(mark(x0), x1), mark(y1))
A__ISNATILIST(cons(s(x0), y1)) → A__AND(a__isNat(x0), a__isNatIList(y1))
A__ISNATLIST(cons(length(x0), y1)) → A__AND(a__isNatList(x0), a__isNatList(y1))
MARK(isNatIList(X)) → A__ISNATILIST(X)
MARK(and(tt, y1)) → A__AND(tt, mark(y1))
MARK(and(length(x0), y1)) → A__AND(a__length(mark(x0)), mark(y1))
A__ISNATILIST(cons(0, y1)) → A__AND(tt, a__isNatIList(y1))
MARK(and(uTake1(x0), y1)) → A__AND(a__uTake1(mark(x0)), mark(y1))
A__AND(tt, T) → MARK(T)
MARK(and(isNatList(x0), y1)) → A__AND(a__isNatList(x0), mark(y1))
A__ISNATLIST(cons(0, y1)) → A__AND(tt, a__isNatList(y1))
MARK(and(and(x0, x1), y1)) → A__AND(a__and(mark(x0), mark(x1)), mark(y1))
MARK(and(isNat(x0), y1)) → A__AND(a__isNat(x0), mark(y1))
A__ISNATLIST(cons(s(x0), y1)) → A__AND(a__isNat(x0), a__isNatList(y1))
MARK(and(X1, X2)) → MARK(X1)
MARK(and(uTake2(x0, x1, x2, x3), y1)) → A__AND(a__uTake2(mark(x0), x1, x2, x3), mark(y1))
MARK(isNatList(X)) → A__ISNATLIST(X)
MARK(and(isNatIList(x0), y1)) → A__AND(a__isNatIList(x0), mark(y1))
MARK(and(X1, X2)) → MARK(X2)
Used ordering: Polynomial interpretation [25]:

POL(0) = 0   
POL(A__AND(x1, x2)) = x2   
POL(A__ISNATILIST(x1)) = 0   
POL(A__ISNATLIST(x1)) = 0   
POL(MARK(x1)) = x1   
POL(a__and(x1, x2)) = x1 + x2   
POL(a__isNat(x1)) = 0   
POL(a__isNatIList(x1)) = 0   
POL(a__isNatList(x1)) = 0   
POL(a__length(x1)) = x1   
POL(a__take(x1, x2)) = 1   
POL(a__uLength(x1, x2)) = x1   
POL(a__uTake1(x1)) = 0   
POL(a__uTake2(x1, x2, x3, x4)) = x1   
POL(a__zeros) = 1   
POL(and(x1, x2)) = x1 + x2   
POL(cons(x1, x2)) = 0   
POL(isNat(x1)) = 0   
POL(isNatIList(x1)) = 0   
POL(isNatList(x1)) = 0   
POL(length(x1)) = x1   
POL(mark(x1)) = x1   
POL(nil) = 0   
POL(s(x1)) = 0   
POL(take(x1, x2)) = 1   
POL(tt) = 0   
POL(uLength(x1, x2)) = x1   
POL(uTake1(x1)) = 0   
POL(uTake2(x1, x2, x3, x4)) = x1   
POL(zeros) = 1   

The following usable rules [17] were oriented:

mark(nil) → nil
mark(cons(X1, X2)) → cons(mark(X1), X2)
a__isNatIList(X) → isNatIList(X)
a__and(X1, X2) → and(X1, X2)
a__isNat(X) → isNat(X)
a__isNatList(X) → isNatList(X)
a__zeroszeros
a__length(X) → length(X)
mark(take(X1, X2)) → a__take(mark(X1), mark(X2))
mark(zeros) → a__zeros
mark(uTake2(X1, X2, X3, X4)) → a__uTake2(mark(X1), X2, X3, X4)
mark(uTake1(X)) → a__uTake1(mark(X))
mark(tt) → tt
mark(uLength(X1, X2)) → a__uLength(mark(X1), X2)
mark(s(X)) → s(mark(X))
mark(0) → 0
a__take(X1, X2) → take(X1, X2)
a__uTake1(X) → uTake1(X)
a__uTake2(X1, X2, X3, X4) → uTake2(X1, X2, X3, X4)
a__uLength(X1, X2) → uLength(X1, X2)
a__isNatIList(zeros) → tt
a__isNat(0) → tt
a__take(s(M), cons(N, IL)) → a__uTake2(a__and(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL))), M, N, IL)
a__uTake1(tt) → nil
a__take(0, IL) → a__uTake1(a__isNatIList(IL))
a__zeroscons(0, zeros)
a__isNatList(nil) → tt
mark(length(X)) → a__length(mark(X))
a__isNatIList(IL) → a__isNatList(IL)
mark(isNat(X)) → a__isNat(X)
a__isNat(s(N)) → a__isNat(N)
a__and(tt, T) → mark(T)
mark(isNatList(X)) → a__isNatList(X)
a__isNatIList(cons(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
mark(isNatIList(X)) → a__isNatIList(X)
a__isNat(length(L)) → a__isNatList(L)
mark(and(X1, X2)) → a__and(mark(X1), mark(X2))
a__isNatList(cons(N, L)) → a__and(a__isNat(N), a__isNatList(L))
a__isNatList(take(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__uLength(tt, L) → s(a__length(mark(L)))
a__length(cons(N, L)) → a__uLength(a__and(a__isNat(N), a__isNatList(L)), L)
a__uTake2(tt, M, N, IL) → cons(mark(N), take(M, IL))



↳ QTRS
  ↳ DependencyPairsProof
    ↳ QDP
      ↳ DependencyGraphProof
        ↳ QDP
          ↳ QDPOrderProof
            ↳ QDP
              ↳ DependencyGraphProof
                ↳ AND
                  ↳ QDP
                    ↳ QDPOrderProof
                      ↳ QDP
                        ↳ DependencyGraphProof
                          ↳ QDP
                            ↳ QDPOrderProof
                              ↳ QDP
                                ↳ DependencyGraphProof
                                  ↳ QDP
                                    ↳ QDPOrderProof
                                      ↳ QDP
                                        ↳ QDPOrderProof
                                          ↳ QDP
                                            ↳ QDPOrderProof
                                              ↳ QDP
                                                ↳ DependencyGraphProof
                                                  ↳ AND
                                                    ↳ QDP
                                                    ↳ QDP
                                                      ↳ QDPOrderProof
                                                        ↳ QDP
                                                          ↳ QDPOrderProof
                                                            ↳ QDP
                                                              ↳ Narrowing
                                                                ↳ QDP
                                                                  ↳ DependencyGraphProof
                                                                    ↳ QDP
                                                                      ↳ Narrowing
                                                                        ↳ QDP
                                                                          ↳ DependencyGraphProof
                                                                            ↳ QDP
                                                                              ↳ Narrowing
                                                                                ↳ QDP
                                                                                  ↳ DependencyGraphProof
                                                                                    ↳ QDP
                                                                                      ↳ Narrowing
                                                                                        ↳ QDP
                                                                                          ↳ DependencyGraphProof
                                                                                            ↳ QDP
                                                                                              ↳ QDPOrderProof
QDP
                                                                                                  ↳ QDPOrderProof
                  ↳ QDP

Q DP problem:
The TRS P consists of the following rules:

A__ISNATILIST(cons(length(x0), y1)) → A__AND(a__isNatList(x0), a__isNatIList(y1))
A__ISNATLIST(cons(N, L)) → A__ISNATLIST(L)
A__ISNATILIST(cons(N, IL)) → A__ISNATILIST(IL)
MARK(and(uLength(x0, x1), y1)) → A__AND(a__uLength(mark(x0), x1), mark(y1))
A__ISNATILIST(cons(s(x0), y1)) → A__AND(a__isNat(x0), a__isNatIList(y1))
A__ISNATLIST(cons(length(x0), y1)) → A__AND(a__isNatList(x0), a__isNatList(y1))
MARK(isNatIList(X)) → A__ISNATILIST(X)
MARK(and(tt, y1)) → A__AND(tt, mark(y1))
MARK(and(length(x0), y1)) → A__AND(a__length(mark(x0)), mark(y1))
A__ISNATILIST(cons(0, y1)) → A__AND(tt, a__isNatIList(y1))
MARK(and(uTake1(x0), y1)) → A__AND(a__uTake1(mark(x0)), mark(y1))
A__AND(tt, T) → MARK(T)
A__ISNATLIST(cons(0, y1)) → A__AND(tt, a__isNatList(y1))
MARK(and(isNatList(x0), y1)) → A__AND(a__isNatList(x0), mark(y1))
MARK(and(and(x0, x1), y1)) → A__AND(a__and(mark(x0), mark(x1)), mark(y1))
A__ISNATLIST(cons(s(x0), y1)) → A__AND(a__isNat(x0), a__isNatList(y1))
MARK(and(isNat(x0), y1)) → A__AND(a__isNat(x0), mark(y1))
MARK(and(X1, X2)) → MARK(X1)
MARK(and(uTake2(x0, x1, x2, x3), y1)) → A__AND(a__uTake2(mark(x0), x1, x2, x3), mark(y1))
MARK(isNatList(X)) → A__ISNATLIST(X)
MARK(and(isNatIList(x0), y1)) → A__AND(a__isNatIList(x0), mark(y1))
MARK(and(X1, X2)) → MARK(X2)

The TRS R consists of the following rules:

a__and(tt, T) → mark(T)
a__isNatIList(IL) → a__isNatList(IL)
a__isNat(0) → tt
a__isNat(s(N)) → a__isNat(N)
a__isNat(length(L)) → a__isNatList(L)
a__isNatIList(zeros) → tt
a__isNatIList(cons(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__isNatList(nil) → tt
a__isNatList(cons(N, L)) → a__and(a__isNat(N), a__isNatList(L))
a__isNatList(take(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__zeroscons(0, zeros)
a__take(0, IL) → a__uTake1(a__isNatIList(IL))
a__uTake1(tt) → nil
a__take(s(M), cons(N, IL)) → a__uTake2(a__and(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL))), M, N, IL)
a__uTake2(tt, M, N, IL) → cons(mark(N), take(M, IL))
a__length(cons(N, L)) → a__uLength(a__and(a__isNat(N), a__isNatList(L)), L)
a__uLength(tt, L) → s(a__length(mark(L)))
mark(and(X1, X2)) → a__and(mark(X1), mark(X2))
mark(isNatIList(X)) → a__isNatIList(X)
mark(isNatList(X)) → a__isNatList(X)
mark(isNat(X)) → a__isNat(X)
mark(length(X)) → a__length(mark(X))
mark(zeros) → a__zeros
mark(take(X1, X2)) → a__take(mark(X1), mark(X2))
mark(uTake1(X)) → a__uTake1(mark(X))
mark(uTake2(X1, X2, X3, X4)) → a__uTake2(mark(X1), X2, X3, X4)
mark(uLength(X1, X2)) → a__uLength(mark(X1), X2)
mark(tt) → tt
mark(0) → 0
mark(s(X)) → s(mark(X))
mark(cons(X1, X2)) → cons(mark(X1), X2)
mark(nil) → nil
a__and(X1, X2) → and(X1, X2)
a__isNatIList(X) → isNatIList(X)
a__isNatList(X) → isNatList(X)
a__isNat(X) → isNat(X)
a__length(X) → length(X)
a__zeroszeros
a__take(X1, X2) → take(X1, X2)
a__uTake1(X) → uTake1(X)
a__uTake2(X1, X2, X3, X4) → uTake2(X1, X2, X3, X4)
a__uLength(X1, X2) → uLength(X1, X2)

Q is empty.
We have to consider all minimal (P,Q,R)-chains.
We use the reduction pair processor [15].


The following pairs can be oriented strictly and are deleted.


MARK(and(length(x0), y1)) → A__AND(a__length(mark(x0)), mark(y1))
The remaining pairs can at least be oriented weakly.

A__ISNATILIST(cons(length(x0), y1)) → A__AND(a__isNatList(x0), a__isNatIList(y1))
A__ISNATLIST(cons(N, L)) → A__ISNATLIST(L)
A__ISNATILIST(cons(N, IL)) → A__ISNATILIST(IL)
MARK(and(uLength(x0, x1), y1)) → A__AND(a__uLength(mark(x0), x1), mark(y1))
A__ISNATILIST(cons(s(x0), y1)) → A__AND(a__isNat(x0), a__isNatIList(y1))
A__ISNATLIST(cons(length(x0), y1)) → A__AND(a__isNatList(x0), a__isNatList(y1))
MARK(isNatIList(X)) → A__ISNATILIST(X)
MARK(and(tt, y1)) → A__AND(tt, mark(y1))
A__ISNATILIST(cons(0, y1)) → A__AND(tt, a__isNatIList(y1))
MARK(and(uTake1(x0), y1)) → A__AND(a__uTake1(mark(x0)), mark(y1))
A__AND(tt, T) → MARK(T)
A__ISNATLIST(cons(0, y1)) → A__AND(tt, a__isNatList(y1))
MARK(and(isNatList(x0), y1)) → A__AND(a__isNatList(x0), mark(y1))
MARK(and(and(x0, x1), y1)) → A__AND(a__and(mark(x0), mark(x1)), mark(y1))
A__ISNATLIST(cons(s(x0), y1)) → A__AND(a__isNat(x0), a__isNatList(y1))
MARK(and(isNat(x0), y1)) → A__AND(a__isNat(x0), mark(y1))
MARK(and(X1, X2)) → MARK(X1)
MARK(and(uTake2(x0, x1, x2, x3), y1)) → A__AND(a__uTake2(mark(x0), x1, x2, x3), mark(y1))
MARK(isNatList(X)) → A__ISNATLIST(X)
MARK(and(isNatIList(x0), y1)) → A__AND(a__isNatIList(x0), mark(y1))
MARK(and(X1, X2)) → MARK(X2)
Used ordering: Polynomial interpretation [25]:

POL(0) = 0   
POL(A__AND(x1, x2)) = x2   
POL(A__ISNATILIST(x1)) = 0   
POL(A__ISNATLIST(x1)) = 0   
POL(MARK(x1)) = x1   
POL(a__and(x1, x2)) = x1 + x2   
POL(a__isNat(x1)) = 0   
POL(a__isNatIList(x1)) = 0   
POL(a__isNatList(x1)) = 0   
POL(a__length(x1)) = 1   
POL(a__take(x1, x2)) = 1   
POL(a__uLength(x1, x2)) = 0   
POL(a__uTake1(x1)) = 0   
POL(a__uTake2(x1, x2, x3, x4)) = 0   
POL(a__zeros) = 1   
POL(and(x1, x2)) = x1 + x2   
POL(cons(x1, x2)) = 0   
POL(isNat(x1)) = 0   
POL(isNatIList(x1)) = 0   
POL(isNatList(x1)) = 0   
POL(length(x1)) = 1   
POL(mark(x1)) = x1   
POL(nil) = 0   
POL(s(x1)) = 0   
POL(take(x1, x2)) = 1   
POL(tt) = 0   
POL(uLength(x1, x2)) = 0   
POL(uTake1(x1)) = 0   
POL(uTake2(x1, x2, x3, x4)) = 0   
POL(zeros) = 1   

The following usable rules [17] were oriented:

mark(nil) → nil
mark(cons(X1, X2)) → cons(mark(X1), X2)
a__isNatIList(X) → isNatIList(X)
a__and(X1, X2) → and(X1, X2)
a__isNat(X) → isNat(X)
a__isNatList(X) → isNatList(X)
a__zeroszeros
a__length(X) → length(X)
mark(take(X1, X2)) → a__take(mark(X1), mark(X2))
mark(zeros) → a__zeros
mark(uTake2(X1, X2, X3, X4)) → a__uTake2(mark(X1), X2, X3, X4)
mark(uTake1(X)) → a__uTake1(mark(X))
mark(tt) → tt
mark(uLength(X1, X2)) → a__uLength(mark(X1), X2)
mark(s(X)) → s(mark(X))
mark(0) → 0
a__take(X1, X2) → take(X1, X2)
a__uTake1(X) → uTake1(X)
a__uTake2(X1, X2, X3, X4) → uTake2(X1, X2, X3, X4)
a__uLength(X1, X2) → uLength(X1, X2)
a__isNatIList(zeros) → tt
a__isNat(0) → tt
a__take(s(M), cons(N, IL)) → a__uTake2(a__and(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL))), M, N, IL)
a__uTake1(tt) → nil
a__take(0, IL) → a__uTake1(a__isNatIList(IL))
a__zeroscons(0, zeros)
a__isNatList(nil) → tt
mark(length(X)) → a__length(mark(X))
a__isNatIList(IL) → a__isNatList(IL)
mark(isNat(X)) → a__isNat(X)
a__isNat(s(N)) → a__isNat(N)
a__and(tt, T) → mark(T)
mark(isNatList(X)) → a__isNatList(X)
a__isNatIList(cons(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
mark(isNatIList(X)) → a__isNatIList(X)
a__isNat(length(L)) → a__isNatList(L)
mark(and(X1, X2)) → a__and(mark(X1), mark(X2))
a__isNatList(cons(N, L)) → a__and(a__isNat(N), a__isNatList(L))
a__isNatList(take(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__uLength(tt, L) → s(a__length(mark(L)))
a__length(cons(N, L)) → a__uLength(a__and(a__isNat(N), a__isNatList(L)), L)
a__uTake2(tt, M, N, IL) → cons(mark(N), take(M, IL))



↳ QTRS
  ↳ DependencyPairsProof
    ↳ QDP
      ↳ DependencyGraphProof
        ↳ QDP
          ↳ QDPOrderProof
            ↳ QDP
              ↳ DependencyGraphProof
                ↳ AND
                  ↳ QDP
                    ↳ QDPOrderProof
                      ↳ QDP
                        ↳ DependencyGraphProof
                          ↳ QDP
                            ↳ QDPOrderProof
                              ↳ QDP
                                ↳ DependencyGraphProof
                                  ↳ QDP
                                    ↳ QDPOrderProof
                                      ↳ QDP
                                        ↳ QDPOrderProof
                                          ↳ QDP
                                            ↳ QDPOrderProof
                                              ↳ QDP
                                                ↳ DependencyGraphProof
                                                  ↳ AND
                                                    ↳ QDP
                                                    ↳ QDP
                                                      ↳ QDPOrderProof
                                                        ↳ QDP
                                                          ↳ QDPOrderProof
                                                            ↳ QDP
                                                              ↳ Narrowing
                                                                ↳ QDP
                                                                  ↳ DependencyGraphProof
                                                                    ↳ QDP
                                                                      ↳ Narrowing
                                                                        ↳ QDP
                                                                          ↳ DependencyGraphProof
                                                                            ↳ QDP
                                                                              ↳ Narrowing
                                                                                ↳ QDP
                                                                                  ↳ DependencyGraphProof
                                                                                    ↳ QDP
                                                                                      ↳ Narrowing
                                                                                        ↳ QDP
                                                                                          ↳ DependencyGraphProof
                                                                                            ↳ QDP
                                                                                              ↳ QDPOrderProof
                                                                                                ↳ QDP
                                                                                                  ↳ QDPOrderProof
QDP
                                                                                                      ↳ QDPOrderProof
                  ↳ QDP

Q DP problem:
The TRS P consists of the following rules:

A__ISNATILIST(cons(length(x0), y1)) → A__AND(a__isNatList(x0), a__isNatIList(y1))
A__ISNATLIST(cons(N, L)) → A__ISNATLIST(L)
A__ISNATILIST(cons(N, IL)) → A__ISNATILIST(IL)
MARK(and(uLength(x0, x1), y1)) → A__AND(a__uLength(mark(x0), x1), mark(y1))
A__ISNATILIST(cons(s(x0), y1)) → A__AND(a__isNat(x0), a__isNatIList(y1))
A__ISNATLIST(cons(length(x0), y1)) → A__AND(a__isNatList(x0), a__isNatList(y1))
MARK(isNatIList(X)) → A__ISNATILIST(X)
MARK(and(tt, y1)) → A__AND(tt, mark(y1))
A__ISNATILIST(cons(0, y1)) → A__AND(tt, a__isNatIList(y1))
MARK(and(uTake1(x0), y1)) → A__AND(a__uTake1(mark(x0)), mark(y1))
A__AND(tt, T) → MARK(T)
A__ISNATLIST(cons(0, y1)) → A__AND(tt, a__isNatList(y1))
MARK(and(isNatList(x0), y1)) → A__AND(a__isNatList(x0), mark(y1))
MARK(and(and(x0, x1), y1)) → A__AND(a__and(mark(x0), mark(x1)), mark(y1))
MARK(and(isNat(x0), y1)) → A__AND(a__isNat(x0), mark(y1))
A__ISNATLIST(cons(s(x0), y1)) → A__AND(a__isNat(x0), a__isNatList(y1))
MARK(and(X1, X2)) → MARK(X1)
MARK(and(uTake2(x0, x1, x2, x3), y1)) → A__AND(a__uTake2(mark(x0), x1, x2, x3), mark(y1))
MARK(isNatList(X)) → A__ISNATLIST(X)
MARK(and(isNatIList(x0), y1)) → A__AND(a__isNatIList(x0), mark(y1))
MARK(and(X1, X2)) → MARK(X2)

The TRS R consists of the following rules:

a__and(tt, T) → mark(T)
a__isNatIList(IL) → a__isNatList(IL)
a__isNat(0) → tt
a__isNat(s(N)) → a__isNat(N)
a__isNat(length(L)) → a__isNatList(L)
a__isNatIList(zeros) → tt
a__isNatIList(cons(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__isNatList(nil) → tt
a__isNatList(cons(N, L)) → a__and(a__isNat(N), a__isNatList(L))
a__isNatList(take(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__zeroscons(0, zeros)
a__take(0, IL) → a__uTake1(a__isNatIList(IL))
a__uTake1(tt) → nil
a__take(s(M), cons(N, IL)) → a__uTake2(a__and(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL))), M, N, IL)
a__uTake2(tt, M, N, IL) → cons(mark(N), take(M, IL))
a__length(cons(N, L)) → a__uLength(a__and(a__isNat(N), a__isNatList(L)), L)
a__uLength(tt, L) → s(a__length(mark(L)))
mark(and(X1, X2)) → a__and(mark(X1), mark(X2))
mark(isNatIList(X)) → a__isNatIList(X)
mark(isNatList(X)) → a__isNatList(X)
mark(isNat(X)) → a__isNat(X)
mark(length(X)) → a__length(mark(X))
mark(zeros) → a__zeros
mark(take(X1, X2)) → a__take(mark(X1), mark(X2))
mark(uTake1(X)) → a__uTake1(mark(X))
mark(uTake2(X1, X2, X3, X4)) → a__uTake2(mark(X1), X2, X3, X4)
mark(uLength(X1, X2)) → a__uLength(mark(X1), X2)
mark(tt) → tt
mark(0) → 0
mark(s(X)) → s(mark(X))
mark(cons(X1, X2)) → cons(mark(X1), X2)
mark(nil) → nil
a__and(X1, X2) → and(X1, X2)
a__isNatIList(X) → isNatIList(X)
a__isNatList(X) → isNatList(X)
a__isNat(X) → isNat(X)
a__length(X) → length(X)
a__zeroszeros
a__take(X1, X2) → take(X1, X2)
a__uTake1(X) → uTake1(X)
a__uTake2(X1, X2, X3, X4) → uTake2(X1, X2, X3, X4)
a__uLength(X1, X2) → uLength(X1, X2)

Q is empty.
We have to consider all minimal (P,Q,R)-chains.
We use the reduction pair processor [15].


The following pairs can be oriented strictly and are deleted.


MARK(and(uTake1(x0), y1)) → A__AND(a__uTake1(mark(x0)), mark(y1))
The remaining pairs can at least be oriented weakly.

A__ISNATILIST(cons(length(x0), y1)) → A__AND(a__isNatList(x0), a__isNatIList(y1))
A__ISNATLIST(cons(N, L)) → A__ISNATLIST(L)
A__ISNATILIST(cons(N, IL)) → A__ISNATILIST(IL)
MARK(and(uLength(x0, x1), y1)) → A__AND(a__uLength(mark(x0), x1), mark(y1))
A__ISNATILIST(cons(s(x0), y1)) → A__AND(a__isNat(x0), a__isNatIList(y1))
A__ISNATLIST(cons(length(x0), y1)) → A__AND(a__isNatList(x0), a__isNatList(y1))
MARK(isNatIList(X)) → A__ISNATILIST(X)
MARK(and(tt, y1)) → A__AND(tt, mark(y1))
A__ISNATILIST(cons(0, y1)) → A__AND(tt, a__isNatIList(y1))
A__AND(tt, T) → MARK(T)
A__ISNATLIST(cons(0, y1)) → A__AND(tt, a__isNatList(y1))
MARK(and(isNatList(x0), y1)) → A__AND(a__isNatList(x0), mark(y1))
MARK(and(and(x0, x1), y1)) → A__AND(a__and(mark(x0), mark(x1)), mark(y1))
MARK(and(isNat(x0), y1)) → A__AND(a__isNat(x0), mark(y1))
A__ISNATLIST(cons(s(x0), y1)) → A__AND(a__isNat(x0), a__isNatList(y1))
MARK(and(X1, X2)) → MARK(X1)
MARK(and(uTake2(x0, x1, x2, x3), y1)) → A__AND(a__uTake2(mark(x0), x1, x2, x3), mark(y1))
MARK(isNatList(X)) → A__ISNATLIST(X)
MARK(and(isNatIList(x0), y1)) → A__AND(a__isNatIList(x0), mark(y1))
MARK(and(X1, X2)) → MARK(X2)
Used ordering: Polynomial interpretation [25]:

POL(0) = 0   
POL(A__AND(x1, x2)) = x2   
POL(A__ISNATILIST(x1)) = 0   
POL(A__ISNATLIST(x1)) = 0   
POL(MARK(x1)) = x1   
POL(a__and(x1, x2)) = x1 + x2   
POL(a__isNat(x1)) = 0   
POL(a__isNatIList(x1)) = 0   
POL(a__isNatList(x1)) = 0   
POL(a__length(x1)) = x1   
POL(a__take(x1, x2)) = 1   
POL(a__uLength(x1, x2)) = 0   
POL(a__uTake1(x1)) = 1   
POL(a__uTake2(x1, x2, x3, x4)) = 0   
POL(a__zeros) = 0   
POL(and(x1, x2)) = x1 + x2   
POL(cons(x1, x2)) = 0   
POL(isNat(x1)) = 0   
POL(isNatIList(x1)) = 0   
POL(isNatList(x1)) = 0   
POL(length(x1)) = x1   
POL(mark(x1)) = x1   
POL(nil) = 0   
POL(s(x1)) = 0   
POL(take(x1, x2)) = 1   
POL(tt) = 0   
POL(uLength(x1, x2)) = 0   
POL(uTake1(x1)) = 1   
POL(uTake2(x1, x2, x3, x4)) = 0   
POL(zeros) = 0   

The following usable rules [17] were oriented:

mark(nil) → nil
mark(cons(X1, X2)) → cons(mark(X1), X2)
a__isNatIList(X) → isNatIList(X)
a__and(X1, X2) → and(X1, X2)
a__isNat(X) → isNat(X)
a__isNatList(X) → isNatList(X)
a__zeroszeros
a__length(X) → length(X)
mark(take(X1, X2)) → a__take(mark(X1), mark(X2))
mark(zeros) → a__zeros
mark(uTake2(X1, X2, X3, X4)) → a__uTake2(mark(X1), X2, X3, X4)
mark(uTake1(X)) → a__uTake1(mark(X))
mark(tt) → tt
mark(uLength(X1, X2)) → a__uLength(mark(X1), X2)
mark(s(X)) → s(mark(X))
mark(0) → 0
a__take(X1, X2) → take(X1, X2)
a__uTake1(X) → uTake1(X)
a__uTake2(X1, X2, X3, X4) → uTake2(X1, X2, X3, X4)
a__uLength(X1, X2) → uLength(X1, X2)
a__isNatIList(zeros) → tt
a__isNat(0) → tt
a__take(s(M), cons(N, IL)) → a__uTake2(a__and(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL))), M, N, IL)
a__uTake1(tt) → nil
a__take(0, IL) → a__uTake1(a__isNatIList(IL))
a__zeroscons(0, zeros)
a__isNatList(nil) → tt
mark(length(X)) → a__length(mark(X))
a__isNatIList(IL) → a__isNatList(IL)
mark(isNat(X)) → a__isNat(X)
a__isNat(s(N)) → a__isNat(N)
a__and(tt, T) → mark(T)
mark(isNatList(X)) → a__isNatList(X)
a__isNatIList(cons(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
mark(isNatIList(X)) → a__isNatIList(X)
a__isNat(length(L)) → a__isNatList(L)
mark(and(X1, X2)) → a__and(mark(X1), mark(X2))
a__isNatList(cons(N, L)) → a__and(a__isNat(N), a__isNatList(L))
a__isNatList(take(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__uLength(tt, L) → s(a__length(mark(L)))
a__length(cons(N, L)) → a__uLength(a__and(a__isNat(N), a__isNatList(L)), L)
a__uTake2(tt, M, N, IL) → cons(mark(N), take(M, IL))



↳ QTRS
  ↳ DependencyPairsProof
    ↳ QDP
      ↳ DependencyGraphProof
        ↳ QDP
          ↳ QDPOrderProof
            ↳ QDP
              ↳ DependencyGraphProof
                ↳ AND
                  ↳ QDP
                    ↳ QDPOrderProof
                      ↳ QDP
                        ↳ DependencyGraphProof
                          ↳ QDP
                            ↳ QDPOrderProof
                              ↳ QDP
                                ↳ DependencyGraphProof
                                  ↳ QDP
                                    ↳ QDPOrderProof
                                      ↳ QDP
                                        ↳ QDPOrderProof
                                          ↳ QDP
                                            ↳ QDPOrderProof
                                              ↳ QDP
                                                ↳ DependencyGraphProof
                                                  ↳ AND
                                                    ↳ QDP
                                                    ↳ QDP
                                                      ↳ QDPOrderProof
                                                        ↳ QDP
                                                          ↳ QDPOrderProof
                                                            ↳ QDP
                                                              ↳ Narrowing
                                                                ↳ QDP
                                                                  ↳ DependencyGraphProof
                                                                    ↳ QDP
                                                                      ↳ Narrowing
                                                                        ↳ QDP
                                                                          ↳ DependencyGraphProof
                                                                            ↳ QDP
                                                                              ↳ Narrowing
                                                                                ↳ QDP
                                                                                  ↳ DependencyGraphProof
                                                                                    ↳ QDP
                                                                                      ↳ Narrowing
                                                                                        ↳ QDP
                                                                                          ↳ DependencyGraphProof
                                                                                            ↳ QDP
                                                                                              ↳ QDPOrderProof
                                                                                                ↳ QDP
                                                                                                  ↳ QDPOrderProof
                                                                                                    ↳ QDP
                                                                                                      ↳ QDPOrderProof
QDP
                                                                                                          ↳ QDPOrderProof
                  ↳ QDP

Q DP problem:
The TRS P consists of the following rules:

A__ISNATILIST(cons(length(x0), y1)) → A__AND(a__isNatList(x0), a__isNatIList(y1))
A__ISNATLIST(cons(N, L)) → A__ISNATLIST(L)
A__ISNATILIST(cons(N, IL)) → A__ISNATILIST(IL)
MARK(and(uLength(x0, x1), y1)) → A__AND(a__uLength(mark(x0), x1), mark(y1))
A__ISNATILIST(cons(s(x0), y1)) → A__AND(a__isNat(x0), a__isNatIList(y1))
A__ISNATLIST(cons(length(x0), y1)) → A__AND(a__isNatList(x0), a__isNatList(y1))
MARK(isNatIList(X)) → A__ISNATILIST(X)
MARK(and(tt, y1)) → A__AND(tt, mark(y1))
A__ISNATILIST(cons(0, y1)) → A__AND(tt, a__isNatIList(y1))
A__AND(tt, T) → MARK(T)
A__ISNATLIST(cons(0, y1)) → A__AND(tt, a__isNatList(y1))
MARK(and(isNatList(x0), y1)) → A__AND(a__isNatList(x0), mark(y1))
MARK(and(and(x0, x1), y1)) → A__AND(a__and(mark(x0), mark(x1)), mark(y1))
A__ISNATLIST(cons(s(x0), y1)) → A__AND(a__isNat(x0), a__isNatList(y1))
MARK(and(isNat(x0), y1)) → A__AND(a__isNat(x0), mark(y1))
MARK(and(X1, X2)) → MARK(X1)
MARK(and(uTake2(x0, x1, x2, x3), y1)) → A__AND(a__uTake2(mark(x0), x1, x2, x3), mark(y1))
MARK(isNatList(X)) → A__ISNATLIST(X)
MARK(and(isNatIList(x0), y1)) → A__AND(a__isNatIList(x0), mark(y1))
MARK(and(X1, X2)) → MARK(X2)

The TRS R consists of the following rules:

a__and(tt, T) → mark(T)
a__isNatIList(IL) → a__isNatList(IL)
a__isNat(0) → tt
a__isNat(s(N)) → a__isNat(N)
a__isNat(length(L)) → a__isNatList(L)
a__isNatIList(zeros) → tt
a__isNatIList(cons(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__isNatList(nil) → tt
a__isNatList(cons(N, L)) → a__and(a__isNat(N), a__isNatList(L))
a__isNatList(take(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__zeroscons(0, zeros)
a__take(0, IL) → a__uTake1(a__isNatIList(IL))
a__uTake1(tt) → nil
a__take(s(M), cons(N, IL)) → a__uTake2(a__and(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL))), M, N, IL)
a__uTake2(tt, M, N, IL) → cons(mark(N), take(M, IL))
a__length(cons(N, L)) → a__uLength(a__and(a__isNat(N), a__isNatList(L)), L)
a__uLength(tt, L) → s(a__length(mark(L)))
mark(and(X1, X2)) → a__and(mark(X1), mark(X2))
mark(isNatIList(X)) → a__isNatIList(X)
mark(isNatList(X)) → a__isNatList(X)
mark(isNat(X)) → a__isNat(X)
mark(length(X)) → a__length(mark(X))
mark(zeros) → a__zeros
mark(take(X1, X2)) → a__take(mark(X1), mark(X2))
mark(uTake1(X)) → a__uTake1(mark(X))
mark(uTake2(X1, X2, X3, X4)) → a__uTake2(mark(X1), X2, X3, X4)
mark(uLength(X1, X2)) → a__uLength(mark(X1), X2)
mark(tt) → tt
mark(0) → 0
mark(s(X)) → s(mark(X))
mark(cons(X1, X2)) → cons(mark(X1), X2)
mark(nil) → nil
a__and(X1, X2) → and(X1, X2)
a__isNatIList(X) → isNatIList(X)
a__isNatList(X) → isNatList(X)
a__isNat(X) → isNat(X)
a__length(X) → length(X)
a__zeroszeros
a__take(X1, X2) → take(X1, X2)
a__uTake1(X) → uTake1(X)
a__uTake2(X1, X2, X3, X4) → uTake2(X1, X2, X3, X4)
a__uLength(X1, X2) → uLength(X1, X2)

Q is empty.
We have to consider all minimal (P,Q,R)-chains.
We use the reduction pair processor [15].


The following pairs can be oriented strictly and are deleted.


MARK(and(uTake2(x0, x1, x2, x3), y1)) → A__AND(a__uTake2(mark(x0), x1, x2, x3), mark(y1))
The remaining pairs can at least be oriented weakly.

A__ISNATILIST(cons(length(x0), y1)) → A__AND(a__isNatList(x0), a__isNatIList(y1))
A__ISNATLIST(cons(N, L)) → A__ISNATLIST(L)
A__ISNATILIST(cons(N, IL)) → A__ISNATILIST(IL)
MARK(and(uLength(x0, x1), y1)) → A__AND(a__uLength(mark(x0), x1), mark(y1))
A__ISNATILIST(cons(s(x0), y1)) → A__AND(a__isNat(x0), a__isNatIList(y1))
A__ISNATLIST(cons(length(x0), y1)) → A__AND(a__isNatList(x0), a__isNatList(y1))
MARK(isNatIList(X)) → A__ISNATILIST(X)
MARK(and(tt, y1)) → A__AND(tt, mark(y1))
A__ISNATILIST(cons(0, y1)) → A__AND(tt, a__isNatIList(y1))
A__AND(tt, T) → MARK(T)
A__ISNATLIST(cons(0, y1)) → A__AND(tt, a__isNatList(y1))
MARK(and(isNatList(x0), y1)) → A__AND(a__isNatList(x0), mark(y1))
MARK(and(and(x0, x1), y1)) → A__AND(a__and(mark(x0), mark(x1)), mark(y1))
A__ISNATLIST(cons(s(x0), y1)) → A__AND(a__isNat(x0), a__isNatList(y1))
MARK(and(isNat(x0), y1)) → A__AND(a__isNat(x0), mark(y1))
MARK(and(X1, X2)) → MARK(X1)
MARK(isNatList(X)) → A__ISNATLIST(X)
MARK(and(isNatIList(x0), y1)) → A__AND(a__isNatIList(x0), mark(y1))
MARK(and(X1, X2)) → MARK(X2)
Used ordering: Polynomial interpretation [25]:

POL(0) = 0   
POL(A__AND(x1, x2)) = x2   
POL(A__ISNATILIST(x1)) = 0   
POL(A__ISNATLIST(x1)) = 0   
POL(MARK(x1)) = x1   
POL(a__and(x1, x2)) = x1 + x2   
POL(a__isNat(x1)) = 0   
POL(a__isNatIList(x1)) = 0   
POL(a__isNatList(x1)) = 0   
POL(a__length(x1)) = x1   
POL(a__take(x1, x2)) = 1 + x1   
POL(a__uLength(x1, x2)) = 0   
POL(a__uTake1(x1)) = 1   
POL(a__uTake2(x1, x2, x3, x4)) = 1 + x1   
POL(a__zeros) = 0   
POL(and(x1, x2)) = x1 + x2   
POL(cons(x1, x2)) = 0   
POL(isNat(x1)) = 0   
POL(isNatIList(x1)) = 0   
POL(isNatList(x1)) = 0   
POL(length(x1)) = x1   
POL(mark(x1)) = x1   
POL(nil) = 0   
POL(s(x1)) = 0   
POL(take(x1, x2)) = 1 + x1   
POL(tt) = 0   
POL(uLength(x1, x2)) = 0   
POL(uTake1(x1)) = 1   
POL(uTake2(x1, x2, x3, x4)) = 1 + x1   
POL(zeros) = 0   

The following usable rules [17] were oriented:

mark(nil) → nil
mark(cons(X1, X2)) → cons(mark(X1), X2)
a__isNatIList(X) → isNatIList(X)
a__and(X1, X2) → and(X1, X2)
a__isNat(X) → isNat(X)
a__isNatList(X) → isNatList(X)
a__zeroszeros
a__length(X) → length(X)
mark(take(X1, X2)) → a__take(mark(X1), mark(X2))
mark(zeros) → a__zeros
mark(uTake2(X1, X2, X3, X4)) → a__uTake2(mark(X1), X2, X3, X4)
mark(uTake1(X)) → a__uTake1(mark(X))
mark(tt) → tt
mark(uLength(X1, X2)) → a__uLength(mark(X1), X2)
mark(s(X)) → s(mark(X))
mark(0) → 0
a__take(X1, X2) → take(X1, X2)
a__uTake1(X) → uTake1(X)
a__uTake2(X1, X2, X3, X4) → uTake2(X1, X2, X3, X4)
a__uLength(X1, X2) → uLength(X1, X2)
a__isNatIList(zeros) → tt
a__isNat(0) → tt
a__take(s(M), cons(N, IL)) → a__uTake2(a__and(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL))), M, N, IL)
a__uTake1(tt) → nil
a__take(0, IL) → a__uTake1(a__isNatIList(IL))
a__zeroscons(0, zeros)
a__isNatList(nil) → tt
mark(length(X)) → a__length(mark(X))
a__isNatIList(IL) → a__isNatList(IL)
mark(isNat(X)) → a__isNat(X)
a__isNat(s(N)) → a__isNat(N)
a__and(tt, T) → mark(T)
mark(isNatList(X)) → a__isNatList(X)
a__isNatIList(cons(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
mark(isNatIList(X)) → a__isNatIList(X)
a__isNat(length(L)) → a__isNatList(L)
mark(and(X1, X2)) → a__and(mark(X1), mark(X2))
a__isNatList(cons(N, L)) → a__and(a__isNat(N), a__isNatList(L))
a__isNatList(take(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__uLength(tt, L) → s(a__length(mark(L)))
a__length(cons(N, L)) → a__uLength(a__and(a__isNat(N), a__isNatList(L)), L)
a__uTake2(tt, M, N, IL) → cons(mark(N), take(M, IL))



↳ QTRS
  ↳ DependencyPairsProof
    ↳ QDP
      ↳ DependencyGraphProof
        ↳ QDP
          ↳ QDPOrderProof
            ↳ QDP
              ↳ DependencyGraphProof
                ↳ AND
                  ↳ QDP
                    ↳ QDPOrderProof
                      ↳ QDP
                        ↳ DependencyGraphProof
                          ↳ QDP
                            ↳ QDPOrderProof
                              ↳ QDP
                                ↳ DependencyGraphProof
                                  ↳ QDP
                                    ↳ QDPOrderProof
                                      ↳ QDP
                                        ↳ QDPOrderProof
                                          ↳ QDP
                                            ↳ QDPOrderProof
                                              ↳ QDP
                                                ↳ DependencyGraphProof
                                                  ↳ AND
                                                    ↳ QDP
                                                    ↳ QDP
                                                      ↳ QDPOrderProof
                                                        ↳ QDP
                                                          ↳ QDPOrderProof
                                                            ↳ QDP
                                                              ↳ Narrowing
                                                                ↳ QDP
                                                                  ↳ DependencyGraphProof
                                                                    ↳ QDP
                                                                      ↳ Narrowing
                                                                        ↳ QDP
                                                                          ↳ DependencyGraphProof
                                                                            ↳ QDP
                                                                              ↳ Narrowing
                                                                                ↳ QDP
                                                                                  ↳ DependencyGraphProof
                                                                                    ↳ QDP
                                                                                      ↳ Narrowing
                                                                                        ↳ QDP
                                                                                          ↳ DependencyGraphProof
                                                                                            ↳ QDP
                                                                                              ↳ QDPOrderProof
                                                                                                ↳ QDP
                                                                                                  ↳ QDPOrderProof
                                                                                                    ↳ QDP
                                                                                                      ↳ QDPOrderProof
                                                                                                        ↳ QDP
                                                                                                          ↳ QDPOrderProof
QDP
                                                                                                              ↳ QDPOrderProof
                  ↳ QDP

Q DP problem:
The TRS P consists of the following rules:

A__ISNATILIST(cons(length(x0), y1)) → A__AND(a__isNatList(x0), a__isNatIList(y1))
A__ISNATLIST(cons(N, L)) → A__ISNATLIST(L)
A__ISNATILIST(cons(N, IL)) → A__ISNATILIST(IL)
MARK(and(uLength(x0, x1), y1)) → A__AND(a__uLength(mark(x0), x1), mark(y1))
A__ISNATILIST(cons(s(x0), y1)) → A__AND(a__isNat(x0), a__isNatIList(y1))
A__ISNATLIST(cons(length(x0), y1)) → A__AND(a__isNatList(x0), a__isNatList(y1))
MARK(isNatIList(X)) → A__ISNATILIST(X)
MARK(and(tt, y1)) → A__AND(tt, mark(y1))
A__ISNATILIST(cons(0, y1)) → A__AND(tt, a__isNatIList(y1))
A__AND(tt, T) → MARK(T)
A__ISNATLIST(cons(0, y1)) → A__AND(tt, a__isNatList(y1))
MARK(and(isNatList(x0), y1)) → A__AND(a__isNatList(x0), mark(y1))
MARK(and(and(x0, x1), y1)) → A__AND(a__and(mark(x0), mark(x1)), mark(y1))
MARK(and(isNat(x0), y1)) → A__AND(a__isNat(x0), mark(y1))
A__ISNATLIST(cons(s(x0), y1)) → A__AND(a__isNat(x0), a__isNatList(y1))
MARK(and(X1, X2)) → MARK(X1)
MARK(isNatList(X)) → A__ISNATLIST(X)
MARK(and(isNatIList(x0), y1)) → A__AND(a__isNatIList(x0), mark(y1))
MARK(and(X1, X2)) → MARK(X2)

The TRS R consists of the following rules:

a__and(tt, T) → mark(T)
a__isNatIList(IL) → a__isNatList(IL)
a__isNat(0) → tt
a__isNat(s(N)) → a__isNat(N)
a__isNat(length(L)) → a__isNatList(L)
a__isNatIList(zeros) → tt
a__isNatIList(cons(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__isNatList(nil) → tt
a__isNatList(cons(N, L)) → a__and(a__isNat(N), a__isNatList(L))
a__isNatList(take(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__zeroscons(0, zeros)
a__take(0, IL) → a__uTake1(a__isNatIList(IL))
a__uTake1(tt) → nil
a__take(s(M), cons(N, IL)) → a__uTake2(a__and(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL))), M, N, IL)
a__uTake2(tt, M, N, IL) → cons(mark(N), take(M, IL))
a__length(cons(N, L)) → a__uLength(a__and(a__isNat(N), a__isNatList(L)), L)
a__uLength(tt, L) → s(a__length(mark(L)))
mark(and(X1, X2)) → a__and(mark(X1), mark(X2))
mark(isNatIList(X)) → a__isNatIList(X)
mark(isNatList(X)) → a__isNatList(X)
mark(isNat(X)) → a__isNat(X)
mark(length(X)) → a__length(mark(X))
mark(zeros) → a__zeros
mark(take(X1, X2)) → a__take(mark(X1), mark(X2))
mark(uTake1(X)) → a__uTake1(mark(X))
mark(uTake2(X1, X2, X3, X4)) → a__uTake2(mark(X1), X2, X3, X4)
mark(uLength(X1, X2)) → a__uLength(mark(X1), X2)
mark(tt) → tt
mark(0) → 0
mark(s(X)) → s(mark(X))
mark(cons(X1, X2)) → cons(mark(X1), X2)
mark(nil) → nil
a__and(X1, X2) → and(X1, X2)
a__isNatIList(X) → isNatIList(X)
a__isNatList(X) → isNatList(X)
a__isNat(X) → isNat(X)
a__length(X) → length(X)
a__zeroszeros
a__take(X1, X2) → take(X1, X2)
a__uTake1(X) → uTake1(X)
a__uTake2(X1, X2, X3, X4) → uTake2(X1, X2, X3, X4)
a__uLength(X1, X2) → uLength(X1, X2)

Q is empty.
We have to consider all minimal (P,Q,R)-chains.
We use the reduction pair processor [15].


The following pairs can be oriented strictly and are deleted.


MARK(and(uLength(x0, x1), y1)) → A__AND(a__uLength(mark(x0), x1), mark(y1))
The remaining pairs can at least be oriented weakly.

A__ISNATILIST(cons(length(x0), y1)) → A__AND(a__isNatList(x0), a__isNatIList(y1))
A__ISNATLIST(cons(N, L)) → A__ISNATLIST(L)
A__ISNATILIST(cons(N, IL)) → A__ISNATILIST(IL)
A__ISNATILIST(cons(s(x0), y1)) → A__AND(a__isNat(x0), a__isNatIList(y1))
A__ISNATLIST(cons(length(x0), y1)) → A__AND(a__isNatList(x0), a__isNatList(y1))
MARK(isNatIList(X)) → A__ISNATILIST(X)
MARK(and(tt, y1)) → A__AND(tt, mark(y1))
A__ISNATILIST(cons(0, y1)) → A__AND(tt, a__isNatIList(y1))
A__AND(tt, T) → MARK(T)
A__ISNATLIST(cons(0, y1)) → A__AND(tt, a__isNatList(y1))
MARK(and(isNatList(x0), y1)) → A__AND(a__isNatList(x0), mark(y1))
MARK(and(and(x0, x1), y1)) → A__AND(a__and(mark(x0), mark(x1)), mark(y1))
MARK(and(isNat(x0), y1)) → A__AND(a__isNat(x0), mark(y1))
A__ISNATLIST(cons(s(x0), y1)) → A__AND(a__isNat(x0), a__isNatList(y1))
MARK(and(X1, X2)) → MARK(X1)
MARK(isNatList(X)) → A__ISNATLIST(X)
MARK(and(isNatIList(x0), y1)) → A__AND(a__isNatIList(x0), mark(y1))
MARK(and(X1, X2)) → MARK(X2)
Used ordering: Polynomial interpretation with max and min functions [25]:

POL(0) = 0   
POL(A__AND(x1, x2)) = x1   
POL(A__ISNATILIST(x1)) = 1   
POL(A__ISNATLIST(x1)) = 1   
POL(MARK(x1)) = 1   
POL(a__and(x1, x2)) = 1   
POL(a__isNat(x1)) = 1   
POL(a__isNatIList(x1)) = 1   
POL(a__isNatList(x1)) = 1   
POL(a__length(x1)) = 0   
POL(a__take(x1, x2)) = x2   
POL(a__uLength(x1, x2)) = 0   
POL(a__uTake1(x1)) = 0   
POL(a__uTake2(x1, x2, x3, x4)) = 0   
POL(a__zeros) = 0   
POL(and(x1, x2)) = 0   
POL(cons(x1, x2)) = 0   
POL(isNat(x1)) = 0   
POL(isNatIList(x1)) = 0   
POL(isNatList(x1)) = 0   
POL(length(x1)) = 0   
POL(mark(x1)) = 1   
POL(nil) = 0   
POL(s(x1)) = 0   
POL(take(x1, x2)) = 0   
POL(tt) = 1   
POL(uLength(x1, x2)) = 0   
POL(uTake1(x1)) = 0   
POL(uTake2(x1, x2, x3, x4)) = 0   
POL(zeros) = 0   

The following usable rules [17] were oriented:

mark(nil) → nil
mark(cons(X1, X2)) → cons(mark(X1), X2)
a__isNatIList(X) → isNatIList(X)
a__and(X1, X2) → and(X1, X2)
a__isNat(X) → isNat(X)
a__isNatList(X) → isNatList(X)
a__zeroszeros
a__length(X) → length(X)
mark(take(X1, X2)) → a__take(mark(X1), mark(X2))
mark(zeros) → a__zeros
mark(uTake2(X1, X2, X3, X4)) → a__uTake2(mark(X1), X2, X3, X4)
mark(uTake1(X)) → a__uTake1(mark(X))
mark(tt) → tt
mark(uLength(X1, X2)) → a__uLength(mark(X1), X2)
mark(s(X)) → s(mark(X))
mark(0) → 0
a__take(X1, X2) → take(X1, X2)
a__uTake1(X) → uTake1(X)
a__uTake2(X1, X2, X3, X4) → uTake2(X1, X2, X3, X4)
a__uLength(X1, X2) → uLength(X1, X2)
a__isNatIList(zeros) → tt
a__isNat(0) → tt
a__take(s(M), cons(N, IL)) → a__uTake2(a__and(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL))), M, N, IL)
a__uTake1(tt) → nil
a__take(0, IL) → a__uTake1(a__isNatIList(IL))
a__zeroscons(0, zeros)
a__isNatList(nil) → tt
mark(length(X)) → a__length(mark(X))
a__isNatIList(IL) → a__isNatList(IL)
mark(isNat(X)) → a__isNat(X)
a__isNat(s(N)) → a__isNat(N)
a__and(tt, T) → mark(T)
mark(isNatList(X)) → a__isNatList(X)
a__isNatIList(cons(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
mark(isNatIList(X)) → a__isNatIList(X)
a__isNat(length(L)) → a__isNatList(L)
mark(and(X1, X2)) → a__and(mark(X1), mark(X2))
a__isNatList(cons(N, L)) → a__and(a__isNat(N), a__isNatList(L))
a__isNatList(take(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__uLength(tt, L) → s(a__length(mark(L)))
a__length(cons(N, L)) → a__uLength(a__and(a__isNat(N), a__isNatList(L)), L)
a__uTake2(tt, M, N, IL) → cons(mark(N), take(M, IL))



↳ QTRS
  ↳ DependencyPairsProof
    ↳ QDP
      ↳ DependencyGraphProof
        ↳ QDP
          ↳ QDPOrderProof
            ↳ QDP
              ↳ DependencyGraphProof
                ↳ AND
                  ↳ QDP
                    ↳ QDPOrderProof
                      ↳ QDP
                        ↳ DependencyGraphProof
                          ↳ QDP
                            ↳ QDPOrderProof
                              ↳ QDP
                                ↳ DependencyGraphProof
                                  ↳ QDP
                                    ↳ QDPOrderProof
                                      ↳ QDP
                                        ↳ QDPOrderProof
                                          ↳ QDP
                                            ↳ QDPOrderProof
                                              ↳ QDP
                                                ↳ DependencyGraphProof
                                                  ↳ AND
                                                    ↳ QDP
                                                    ↳ QDP
                                                      ↳ QDPOrderProof
                                                        ↳ QDP
                                                          ↳ QDPOrderProof
                                                            ↳ QDP
                                                              ↳ Narrowing
                                                                ↳ QDP
                                                                  ↳ DependencyGraphProof
                                                                    ↳ QDP
                                                                      ↳ Narrowing
                                                                        ↳ QDP
                                                                          ↳ DependencyGraphProof
                                                                            ↳ QDP
                                                                              ↳ Narrowing
                                                                                ↳ QDP
                                                                                  ↳ DependencyGraphProof
                                                                                    ↳ QDP
                                                                                      ↳ Narrowing
                                                                                        ↳ QDP
                                                                                          ↳ DependencyGraphProof
                                                                                            ↳ QDP
                                                                                              ↳ QDPOrderProof
                                                                                                ↳ QDP
                                                                                                  ↳ QDPOrderProof
                                                                                                    ↳ QDP
                                                                                                      ↳ QDPOrderProof
                                                                                                        ↳ QDP
                                                                                                          ↳ QDPOrderProof
                                                                                                            ↳ QDP
                                                                                                              ↳ QDPOrderProof
QDP
                                                                                                                  ↳ QDPOrderProof
                  ↳ QDP

Q DP problem:
The TRS P consists of the following rules:

A__ISNATILIST(cons(length(x0), y1)) → A__AND(a__isNatList(x0), a__isNatIList(y1))
A__ISNATLIST(cons(N, L)) → A__ISNATLIST(L)
A__ISNATILIST(cons(N, IL)) → A__ISNATILIST(IL)
A__ISNATILIST(cons(s(x0), y1)) → A__AND(a__isNat(x0), a__isNatIList(y1))
A__ISNATLIST(cons(length(x0), y1)) → A__AND(a__isNatList(x0), a__isNatList(y1))
MARK(isNatIList(X)) → A__ISNATILIST(X)
MARK(and(tt, y1)) → A__AND(tt, mark(y1))
A__ISNATILIST(cons(0, y1)) → A__AND(tt, a__isNatIList(y1))
A__AND(tt, T) → MARK(T)
A__ISNATLIST(cons(0, y1)) → A__AND(tt, a__isNatList(y1))
MARK(and(isNatList(x0), y1)) → A__AND(a__isNatList(x0), mark(y1))
MARK(and(and(x0, x1), y1)) → A__AND(a__and(mark(x0), mark(x1)), mark(y1))
A__ISNATLIST(cons(s(x0), y1)) → A__AND(a__isNat(x0), a__isNatList(y1))
MARK(and(isNat(x0), y1)) → A__AND(a__isNat(x0), mark(y1))
MARK(and(X1, X2)) → MARK(X1)
MARK(isNatList(X)) → A__ISNATLIST(X)
MARK(and(isNatIList(x0), y1)) → A__AND(a__isNatIList(x0), mark(y1))
MARK(and(X1, X2)) → MARK(X2)

The TRS R consists of the following rules:

a__and(tt, T) → mark(T)
a__isNatIList(IL) → a__isNatList(IL)
a__isNat(0) → tt
a__isNat(s(N)) → a__isNat(N)
a__isNat(length(L)) → a__isNatList(L)
a__isNatIList(zeros) → tt
a__isNatIList(cons(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__isNatList(nil) → tt
a__isNatList(cons(N, L)) → a__and(a__isNat(N), a__isNatList(L))
a__isNatList(take(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__zeroscons(0, zeros)
a__take(0, IL) → a__uTake1(a__isNatIList(IL))
a__uTake1(tt) → nil
a__take(s(M), cons(N, IL)) → a__uTake2(a__and(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL))), M, N, IL)
a__uTake2(tt, M, N, IL) → cons(mark(N), take(M, IL))
a__length(cons(N, L)) → a__uLength(a__and(a__isNat(N), a__isNatList(L)), L)
a__uLength(tt, L) → s(a__length(mark(L)))
mark(and(X1, X2)) → a__and(mark(X1), mark(X2))
mark(isNatIList(X)) → a__isNatIList(X)
mark(isNatList(X)) → a__isNatList(X)
mark(isNat(X)) → a__isNat(X)
mark(length(X)) → a__length(mark(X))
mark(zeros) → a__zeros
mark(take(X1, X2)) → a__take(mark(X1), mark(X2))
mark(uTake1(X)) → a__uTake1(mark(X))
mark(uTake2(X1, X2, X3, X4)) → a__uTake2(mark(X1), X2, X3, X4)
mark(uLength(X1, X2)) → a__uLength(mark(X1), X2)
mark(tt) → tt
mark(0) → 0
mark(s(X)) → s(mark(X))
mark(cons(X1, X2)) → cons(mark(X1), X2)
mark(nil) → nil
a__and(X1, X2) → and(X1, X2)
a__isNatIList(X) → isNatIList(X)
a__isNatList(X) → isNatList(X)
a__isNat(X) → isNat(X)
a__length(X) → length(X)
a__zeroszeros
a__take(X1, X2) → take(X1, X2)
a__uTake1(X) → uTake1(X)
a__uTake2(X1, X2, X3, X4) → uTake2(X1, X2, X3, X4)
a__uLength(X1, X2) → uLength(X1, X2)

Q is empty.
We have to consider all minimal (P,Q,R)-chains.
We use the reduction pair processor [15].


The following pairs can be oriented strictly and are deleted.


A__ISNATILIST(cons(length(x0), y1)) → A__AND(a__isNatList(x0), a__isNatIList(y1))
A__ISNATLIST(cons(length(x0), y1)) → A__AND(a__isNatList(x0), a__isNatList(y1))
The remaining pairs can at least be oriented weakly.

A__ISNATLIST(cons(N, L)) → A__ISNATLIST(L)
A__ISNATILIST(cons(N, IL)) → A__ISNATILIST(IL)
A__ISNATILIST(cons(s(x0), y1)) → A__AND(a__isNat(x0), a__isNatIList(y1))
MARK(isNatIList(X)) → A__ISNATILIST(X)
MARK(and(tt, y1)) → A__AND(tt, mark(y1))
A__ISNATILIST(cons(0, y1)) → A__AND(tt, a__isNatIList(y1))
A__AND(tt, T) → MARK(T)
A__ISNATLIST(cons(0, y1)) → A__AND(tt, a__isNatList(y1))
MARK(and(isNatList(x0), y1)) → A__AND(a__isNatList(x0), mark(y1))
MARK(and(and(x0, x1), y1)) → A__AND(a__and(mark(x0), mark(x1)), mark(y1))
A__ISNATLIST(cons(s(x0), y1)) → A__AND(a__isNat(x0), a__isNatList(y1))
MARK(and(isNat(x0), y1)) → A__AND(a__isNat(x0), mark(y1))
MARK(and(X1, X2)) → MARK(X1)
MARK(isNatList(X)) → A__ISNATLIST(X)
MARK(and(isNatIList(x0), y1)) → A__AND(a__isNatIList(x0), mark(y1))
MARK(and(X1, X2)) → MARK(X2)
Used ordering: Polynomial interpretation with max and min functions [25]:

POL(0) = 0   
POL(A__AND(x1, x2)) = x2   
POL(A__ISNATILIST(x1)) = x1   
POL(A__ISNATLIST(x1)) = x1   
POL(MARK(x1)) = x1   
POL(a__and(x1, x2)) = x1 + x2   
POL(a__isNat(x1)) = x1   
POL(a__isNatIList(x1)) = x1   
POL(a__isNatList(x1)) = x1   
POL(a__length(x1)) = 1 + x1   
POL(a__take(x1, x2)) = x1 + x2   
POL(a__uLength(x1, x2)) = 1 + x2   
POL(a__uTake1(x1)) = 0   
POL(a__uTake2(x1, x2, x3, x4)) = x2 + x3 + x4   
POL(a__zeros) = 0   
POL(and(x1, x2)) = x1 + x2   
POL(cons(x1, x2)) = x1 + x2   
POL(isNat(x1)) = x1   
POL(isNatIList(x1)) = x1   
POL(isNatList(x1)) = x1   
POL(length(x1)) = 1 + x1   
POL(mark(x1)) = x1   
POL(nil) = 0   
POL(s(x1)) = x1   
POL(take(x1, x2)) = x1 + x2   
POL(tt) = 0   
POL(uLength(x1, x2)) = 1 + x2   
POL(uTake1(x1)) = 0   
POL(uTake2(x1, x2, x3, x4)) = x2 + x3 + x4   
POL(zeros) = 0   

The following usable rules [17] were oriented:

mark(nil) → nil
mark(cons(X1, X2)) → cons(mark(X1), X2)
a__isNatIList(X) → isNatIList(X)
a__and(X1, X2) → and(X1, X2)
a__isNat(X) → isNat(X)
a__isNatList(X) → isNatList(X)
a__zeroszeros
a__length(X) → length(X)
mark(take(X1, X2)) → a__take(mark(X1), mark(X2))
mark(zeros) → a__zeros
mark(uTake2(X1, X2, X3, X4)) → a__uTake2(mark(X1), X2, X3, X4)
mark(uTake1(X)) → a__uTake1(mark(X))
mark(tt) → tt
mark(uLength(X1, X2)) → a__uLength(mark(X1), X2)
mark(s(X)) → s(mark(X))
mark(0) → 0
a__take(X1, X2) → take(X1, X2)
a__uTake1(X) → uTake1(X)
a__uTake2(X1, X2, X3, X4) → uTake2(X1, X2, X3, X4)
a__uLength(X1, X2) → uLength(X1, X2)
a__isNatIList(zeros) → tt
a__isNat(0) → tt
a__take(s(M), cons(N, IL)) → a__uTake2(a__and(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL))), M, N, IL)
a__uTake1(tt) → nil
a__take(0, IL) → a__uTake1(a__isNatIList(IL))
a__zeroscons(0, zeros)
a__isNatList(nil) → tt
mark(length(X)) → a__length(mark(X))
a__isNatIList(IL) → a__isNatList(IL)
mark(isNat(X)) → a__isNat(X)
a__isNat(s(N)) → a__isNat(N)
a__and(tt, T) → mark(T)
mark(isNatList(X)) → a__isNatList(X)
a__isNatIList(cons(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
mark(isNatIList(X)) → a__isNatIList(X)
a__isNat(length(L)) → a__isNatList(L)
mark(and(X1, X2)) → a__and(mark(X1), mark(X2))
a__isNatList(cons(N, L)) → a__and(a__isNat(N), a__isNatList(L))
a__isNatList(take(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__uLength(tt, L) → s(a__length(mark(L)))
a__length(cons(N, L)) → a__uLength(a__and(a__isNat(N), a__isNatList(L)), L)
a__uTake2(tt, M, N, IL) → cons(mark(N), take(M, IL))



↳ QTRS
  ↳ DependencyPairsProof
    ↳ QDP
      ↳ DependencyGraphProof
        ↳ QDP
          ↳ QDPOrderProof
            ↳ QDP
              ↳ DependencyGraphProof
                ↳ AND
                  ↳ QDP
                    ↳ QDPOrderProof
                      ↳ QDP
                        ↳ DependencyGraphProof
                          ↳ QDP
                            ↳ QDPOrderProof
                              ↳ QDP
                                ↳ DependencyGraphProof
                                  ↳ QDP
                                    ↳ QDPOrderProof
                                      ↳ QDP
                                        ↳ QDPOrderProof
                                          ↳ QDP
                                            ↳ QDPOrderProof
                                              ↳ QDP
                                                ↳ DependencyGraphProof
                                                  ↳ AND
                                                    ↳ QDP
                                                    ↳ QDP
                                                      ↳ QDPOrderProof
                                                        ↳ QDP
                                                          ↳ QDPOrderProof
                                                            ↳ QDP
                                                              ↳ Narrowing
                                                                ↳ QDP
                                                                  ↳ DependencyGraphProof
                                                                    ↳ QDP
                                                                      ↳ Narrowing
                                                                        ↳ QDP
                                                                          ↳ DependencyGraphProof
                                                                            ↳ QDP
                                                                              ↳ Narrowing
                                                                                ↳ QDP
                                                                                  ↳ DependencyGraphProof
                                                                                    ↳ QDP
                                                                                      ↳ Narrowing
                                                                                        ↳ QDP
                                                                                          ↳ DependencyGraphProof
                                                                                            ↳ QDP
                                                                                              ↳ QDPOrderProof
                                                                                                ↳ QDP
                                                                                                  ↳ QDPOrderProof
                                                                                                    ↳ QDP
                                                                                                      ↳ QDPOrderProof
                                                                                                        ↳ QDP
                                                                                                          ↳ QDPOrderProof
                                                                                                            ↳ QDP
                                                                                                              ↳ QDPOrderProof
                                                                                                                ↳ QDP
                                                                                                                  ↳ QDPOrderProof
QDP
                                                                                                                      ↳ QDPOrderProof
                  ↳ QDP

Q DP problem:
The TRS P consists of the following rules:

A__ISNATLIST(cons(N, L)) → A__ISNATLIST(L)
A__ISNATILIST(cons(N, IL)) → A__ISNATILIST(IL)
A__ISNATILIST(cons(s(x0), y1)) → A__AND(a__isNat(x0), a__isNatIList(y1))
MARK(isNatIList(X)) → A__ISNATILIST(X)
MARK(and(tt, y1)) → A__AND(tt, mark(y1))
A__ISNATILIST(cons(0, y1)) → A__AND(tt, a__isNatIList(y1))
A__AND(tt, T) → MARK(T)
A__ISNATLIST(cons(0, y1)) → A__AND(tt, a__isNatList(y1))
MARK(and(isNatList(x0), y1)) → A__AND(a__isNatList(x0), mark(y1))
MARK(and(and(x0, x1), y1)) → A__AND(a__and(mark(x0), mark(x1)), mark(y1))
A__ISNATLIST(cons(s(x0), y1)) → A__AND(a__isNat(x0), a__isNatList(y1))
MARK(and(isNat(x0), y1)) → A__AND(a__isNat(x0), mark(y1))
MARK(and(X1, X2)) → MARK(X1)
MARK(isNatList(X)) → A__ISNATLIST(X)
MARK(and(isNatIList(x0), y1)) → A__AND(a__isNatIList(x0), mark(y1))
MARK(and(X1, X2)) → MARK(X2)

The TRS R consists of the following rules:

a__and(tt, T) → mark(T)
a__isNatIList(IL) → a__isNatList(IL)
a__isNat(0) → tt
a__isNat(s(N)) → a__isNat(N)
a__isNat(length(L)) → a__isNatList(L)
a__isNatIList(zeros) → tt
a__isNatIList(cons(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__isNatList(nil) → tt
a__isNatList(cons(N, L)) → a__and(a__isNat(N), a__isNatList(L))
a__isNatList(take(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__zeroscons(0, zeros)
a__take(0, IL) → a__uTake1(a__isNatIList(IL))
a__uTake1(tt) → nil
a__take(s(M), cons(N, IL)) → a__uTake2(a__and(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL))), M, N, IL)
a__uTake2(tt, M, N, IL) → cons(mark(N), take(M, IL))
a__length(cons(N, L)) → a__uLength(a__and(a__isNat(N), a__isNatList(L)), L)
a__uLength(tt, L) → s(a__length(mark(L)))
mark(and(X1, X2)) → a__and(mark(X1), mark(X2))
mark(isNatIList(X)) → a__isNatIList(X)
mark(isNatList(X)) → a__isNatList(X)
mark(isNat(X)) → a__isNat(X)
mark(length(X)) → a__length(mark(X))
mark(zeros) → a__zeros
mark(take(X1, X2)) → a__take(mark(X1), mark(X2))
mark(uTake1(X)) → a__uTake1(mark(X))
mark(uTake2(X1, X2, X3, X4)) → a__uTake2(mark(X1), X2, X3, X4)
mark(uLength(X1, X2)) → a__uLength(mark(X1), X2)
mark(tt) → tt
mark(0) → 0
mark(s(X)) → s(mark(X))
mark(cons(X1, X2)) → cons(mark(X1), X2)
mark(nil) → nil
a__and(X1, X2) → and(X1, X2)
a__isNatIList(X) → isNatIList(X)
a__isNatList(X) → isNatList(X)
a__isNat(X) → isNat(X)
a__length(X) → length(X)
a__zeroszeros
a__take(X1, X2) → take(X1, X2)
a__uTake1(X) → uTake1(X)
a__uTake2(X1, X2, X3, X4) → uTake2(X1, X2, X3, X4)
a__uLength(X1, X2) → uLength(X1, X2)

Q is empty.
We have to consider all minimal (P,Q,R)-chains.
We use the reduction pair processor [15].


The following pairs can be oriented strictly and are deleted.


MARK(and(isNatList(x0), y1)) → A__AND(a__isNatList(x0), mark(y1))
MARK(and(isNatIList(x0), y1)) → A__AND(a__isNatIList(x0), mark(y1))
The remaining pairs can at least be oriented weakly.

A__ISNATLIST(cons(N, L)) → A__ISNATLIST(L)
A__ISNATILIST(cons(N, IL)) → A__ISNATILIST(IL)
A__ISNATILIST(cons(s(x0), y1)) → A__AND(a__isNat(x0), a__isNatIList(y1))
MARK(isNatIList(X)) → A__ISNATILIST(X)
MARK(and(tt, y1)) → A__AND(tt, mark(y1))
A__ISNATILIST(cons(0, y1)) → A__AND(tt, a__isNatIList(y1))
A__AND(tt, T) → MARK(T)
A__ISNATLIST(cons(0, y1)) → A__AND(tt, a__isNatList(y1))
MARK(and(and(x0, x1), y1)) → A__AND(a__and(mark(x0), mark(x1)), mark(y1))
A__ISNATLIST(cons(s(x0), y1)) → A__AND(a__isNat(x0), a__isNatList(y1))
MARK(and(isNat(x0), y1)) → A__AND(a__isNat(x0), mark(y1))
MARK(and(X1, X2)) → MARK(X1)
MARK(isNatList(X)) → A__ISNATLIST(X)
MARK(and(X1, X2)) → MARK(X2)
Used ordering: Polynomial interpretation [25]:

POL(0) = 0   
POL(A__AND(x1, x2)) = x2   
POL(A__ISNATILIST(x1)) = 1 + x1   
POL(A__ISNATLIST(x1)) = 1 + x1   
POL(MARK(x1)) = x1   
POL(a__and(x1, x2)) = x1 + x2   
POL(a__isNat(x1)) = x1   
POL(a__isNatIList(x1)) = 1 + x1   
POL(a__isNatList(x1)) = 1 + x1   
POL(a__length(x1)) = 1 + x1   
POL(a__take(x1, x2)) = x1 + x2   
POL(a__uLength(x1, x2)) = 1 + x2   
POL(a__uTake1(x1)) = 0   
POL(a__uTake2(x1, x2, x3, x4)) = x2 + x3 + x4   
POL(a__zeros) = 0   
POL(and(x1, x2)) = x1 + x2   
POL(cons(x1, x2)) = x1 + x2   
POL(isNat(x1)) = x1   
POL(isNatIList(x1)) = 1 + x1   
POL(isNatList(x1)) = 1 + x1   
POL(length(x1)) = 1 + x1   
POL(mark(x1)) = x1   
POL(nil) = 0   
POL(s(x1)) = x1   
POL(take(x1, x2)) = x1 + x2   
POL(tt) = 0   
POL(uLength(x1, x2)) = 1 + x2   
POL(uTake1(x1)) = 0   
POL(uTake2(x1, x2, x3, x4)) = x2 + x3 + x4   
POL(zeros) = 0   

The following usable rules [17] were oriented:

mark(nil) → nil
mark(cons(X1, X2)) → cons(mark(X1), X2)
a__isNatIList(X) → isNatIList(X)
a__and(X1, X2) → and(X1, X2)
a__isNat(X) → isNat(X)
a__isNatList(X) → isNatList(X)
a__zeroszeros
a__length(X) → length(X)
mark(take(X1, X2)) → a__take(mark(X1), mark(X2))
mark(zeros) → a__zeros
mark(uTake2(X1, X2, X3, X4)) → a__uTake2(mark(X1), X2, X3, X4)
mark(uTake1(X)) → a__uTake1(mark(X))
mark(tt) → tt
mark(uLength(X1, X2)) → a__uLength(mark(X1), X2)
mark(s(X)) → s(mark(X))
mark(0) → 0
a__take(X1, X2) → take(X1, X2)
a__uTake1(X) → uTake1(X)
a__uTake2(X1, X2, X3, X4) → uTake2(X1, X2, X3, X4)
a__uLength(X1, X2) → uLength(X1, X2)
a__isNatIList(zeros) → tt
a__isNat(0) → tt
a__take(s(M), cons(N, IL)) → a__uTake2(a__and(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL))), M, N, IL)
a__uTake1(tt) → nil
a__take(0, IL) → a__uTake1(a__isNatIList(IL))
a__zeroscons(0, zeros)
a__isNatList(nil) → tt
mark(length(X)) → a__length(mark(X))
a__isNatIList(IL) → a__isNatList(IL)
mark(isNat(X)) → a__isNat(X)
a__isNat(s(N)) → a__isNat(N)
a__and(tt, T) → mark(T)
mark(isNatList(X)) → a__isNatList(X)
a__isNatIList(cons(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
mark(isNatIList(X)) → a__isNatIList(X)
a__isNat(length(L)) → a__isNatList(L)
mark(and(X1, X2)) → a__and(mark(X1), mark(X2))
a__isNatList(cons(N, L)) → a__and(a__isNat(N), a__isNatList(L))
a__isNatList(take(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__uLength(tt, L) → s(a__length(mark(L)))
a__length(cons(N, L)) → a__uLength(a__and(a__isNat(N), a__isNatList(L)), L)
a__uTake2(tt, M, N, IL) → cons(mark(N), take(M, IL))



↳ QTRS
  ↳ DependencyPairsProof
    ↳ QDP
      ↳ DependencyGraphProof
        ↳ QDP
          ↳ QDPOrderProof
            ↳ QDP
              ↳ DependencyGraphProof
                ↳ AND
                  ↳ QDP
                    ↳ QDPOrderProof
                      ↳ QDP
                        ↳ DependencyGraphProof
                          ↳ QDP
                            ↳ QDPOrderProof
                              ↳ QDP
                                ↳ DependencyGraphProof
                                  ↳ QDP
                                    ↳ QDPOrderProof
                                      ↳ QDP
                                        ↳ QDPOrderProof
                                          ↳ QDP
                                            ↳ QDPOrderProof
                                              ↳ QDP
                                                ↳ DependencyGraphProof
                                                  ↳ AND
                                                    ↳ QDP
                                                    ↳ QDP
                                                      ↳ QDPOrderProof
                                                        ↳ QDP
                                                          ↳ QDPOrderProof
                                                            ↳ QDP
                                                              ↳ Narrowing
                                                                ↳ QDP
                                                                  ↳ DependencyGraphProof
                                                                    ↳ QDP
                                                                      ↳ Narrowing
                                                                        ↳ QDP
                                                                          ↳ DependencyGraphProof
                                                                            ↳ QDP
                                                                              ↳ Narrowing
                                                                                ↳ QDP
                                                                                  ↳ DependencyGraphProof
                                                                                    ↳ QDP
                                                                                      ↳ Narrowing
                                                                                        ↳ QDP
                                                                                          ↳ DependencyGraphProof
                                                                                            ↳ QDP
                                                                                              ↳ QDPOrderProof
                                                                                                ↳ QDP
                                                                                                  ↳ QDPOrderProof
                                                                                                    ↳ QDP
                                                                                                      ↳ QDPOrderProof
                                                                                                        ↳ QDP
                                                                                                          ↳ QDPOrderProof
                                                                                                            ↳ QDP
                                                                                                              ↳ QDPOrderProof
                                                                                                                ↳ QDP
                                                                                                                  ↳ QDPOrderProof
                                                                                                                    ↳ QDP
                                                                                                                      ↳ QDPOrderProof
QDP
                                                                                                                          ↳ QDPOrderProof
                  ↳ QDP

Q DP problem:
The TRS P consists of the following rules:

A__ISNATLIST(cons(N, L)) → A__ISNATLIST(L)
A__ISNATILIST(cons(N, IL)) → A__ISNATILIST(IL)
A__ISNATILIST(cons(s(x0), y1)) → A__AND(a__isNat(x0), a__isNatIList(y1))
MARK(isNatIList(X)) → A__ISNATILIST(X)
MARK(and(tt, y1)) → A__AND(tt, mark(y1))
A__ISNATILIST(cons(0, y1)) → A__AND(tt, a__isNatIList(y1))
A__AND(tt, T) → MARK(T)
A__ISNATLIST(cons(0, y1)) → A__AND(tt, a__isNatList(y1))
MARK(and(and(x0, x1), y1)) → A__AND(a__and(mark(x0), mark(x1)), mark(y1))
A__ISNATLIST(cons(s(x0), y1)) → A__AND(a__isNat(x0), a__isNatList(y1))
MARK(and(isNat(x0), y1)) → A__AND(a__isNat(x0), mark(y1))
MARK(and(X1, X2)) → MARK(X1)
MARK(isNatList(X)) → A__ISNATLIST(X)
MARK(and(X1, X2)) → MARK(X2)

The TRS R consists of the following rules:

a__and(tt, T) → mark(T)
a__isNatIList(IL) → a__isNatList(IL)
a__isNat(0) → tt
a__isNat(s(N)) → a__isNat(N)
a__isNat(length(L)) → a__isNatList(L)
a__isNatIList(zeros) → tt
a__isNatIList(cons(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__isNatList(nil) → tt
a__isNatList(cons(N, L)) → a__and(a__isNat(N), a__isNatList(L))
a__isNatList(take(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__zeroscons(0, zeros)
a__take(0, IL) → a__uTake1(a__isNatIList(IL))
a__uTake1(tt) → nil
a__take(s(M), cons(N, IL)) → a__uTake2(a__and(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL))), M, N, IL)
a__uTake2(tt, M, N, IL) → cons(mark(N), take(M, IL))
a__length(cons(N, L)) → a__uLength(a__and(a__isNat(N), a__isNatList(L)), L)
a__uLength(tt, L) → s(a__length(mark(L)))
mark(and(X1, X2)) → a__and(mark(X1), mark(X2))
mark(isNatIList(X)) → a__isNatIList(X)
mark(isNatList(X)) → a__isNatList(X)
mark(isNat(X)) → a__isNat(X)
mark(length(X)) → a__length(mark(X))
mark(zeros) → a__zeros
mark(take(X1, X2)) → a__take(mark(X1), mark(X2))
mark(uTake1(X)) → a__uTake1(mark(X))
mark(uTake2(X1, X2, X3, X4)) → a__uTake2(mark(X1), X2, X3, X4)
mark(uLength(X1, X2)) → a__uLength(mark(X1), X2)
mark(tt) → tt
mark(0) → 0
mark(s(X)) → s(mark(X))
mark(cons(X1, X2)) → cons(mark(X1), X2)
mark(nil) → nil
a__and(X1, X2) → and(X1, X2)
a__isNatIList(X) → isNatIList(X)
a__isNatList(X) → isNatList(X)
a__isNat(X) → isNat(X)
a__length(X) → length(X)
a__zeroszeros
a__take(X1, X2) → take(X1, X2)
a__uTake1(X) → uTake1(X)
a__uTake2(X1, X2, X3, X4) → uTake2(X1, X2, X3, X4)
a__uLength(X1, X2) → uLength(X1, X2)

Q is empty.
We have to consider all minimal (P,Q,R)-chains.
We use the reduction pair processor [15].


The following pairs can be oriented strictly and are deleted.


A__ISNATILIST(cons(s(x0), y1)) → A__AND(a__isNat(x0), a__isNatIList(y1))
A__ISNATLIST(cons(s(x0), y1)) → A__AND(a__isNat(x0), a__isNatList(y1))
The remaining pairs can at least be oriented weakly.

A__ISNATLIST(cons(N, L)) → A__ISNATLIST(L)
A__ISNATILIST(cons(N, IL)) → A__ISNATILIST(IL)
MARK(isNatIList(X)) → A__ISNATILIST(X)
MARK(and(tt, y1)) → A__AND(tt, mark(y1))
A__ISNATILIST(cons(0, y1)) → A__AND(tt, a__isNatIList(y1))
A__AND(tt, T) → MARK(T)
A__ISNATLIST(cons(0, y1)) → A__AND(tt, a__isNatList(y1))
MARK(and(and(x0, x1), y1)) → A__AND(a__and(mark(x0), mark(x1)), mark(y1))
MARK(and(isNat(x0), y1)) → A__AND(a__isNat(x0), mark(y1))
MARK(and(X1, X2)) → MARK(X1)
MARK(isNatList(X)) → A__ISNATLIST(X)
MARK(and(X1, X2)) → MARK(X2)
Used ordering: Matrix interpretation [3]:
Non-tuple symbols:
M( a__zeros ) =
/0\
\0/

M( mark(x1) ) =
/0\
\0/
+
/10\
\01/
·x1

M( a__isNatIList(x1) ) =
/0\
\0/
+
/00\
\10/
·x1

M( and(x1, x2) ) =
/0\
\0/
+
/00\
\01/
·x1+
/10\
\01/
·x2

M( a__uTake1(x1) ) =
/0\
\0/
+
/10\
\00/
·x1

M( take(x1, x2) ) =
/0\
\0/
+
/01\
\00/
·x1+
/10\
\00/
·x2

M( a__uLength(x1, x2) ) =
/1\
\0/
+
/00\
\00/
·x1+
/00\
\10/
·x2

M( a__length(x1) ) =
/1\
\0/
+
/00\
\10/
·x1

M( tt ) =
/0\
\0/

M( isNatList(x1) ) =
/0\
\0/
+
/00\
\10/
·x1

M( zeros ) =
/0\
\0/

M( isNatIList(x1) ) =
/0\
\0/
+
/00\
\10/
·x1

M( a__isNat(x1) ) =
/0\
\0/
+
/01\
\01/
·x1

M( s(x1) ) =
/1\
\0/
+
/00\
\01/
·x1

M( isNat(x1) ) =
/0\
\0/
+
/01\
\01/
·x1

M( a__isNatList(x1) ) =
/0\
\0/
+
/00\
\10/
·x1

M( nil ) =
/0\
\0/

M( a__uTake2(x1, ..., x4) ) =
/0\
\0/
+
/00\
\00/
·x1+
/01\
\00/
·x2+
/11\
\00/
·x3+
/10\
\00/
·x4

M( a__and(x1, x2) ) =
/0\
\0/
+
/00\
\01/
·x1+
/10\
\01/
·x2

M( 0 ) =
/0\
\0/

M( a__take(x1, x2) ) =
/0\
\0/
+
/01\
\00/
·x1+
/10\
\00/
·x2

M( cons(x1, x2) ) =
/0\
\0/
+
/11\
\00/
·x1+
/10\
\00/
·x2

M( uTake2(x1, ..., x4) ) =
/0\
\0/
+
/00\
\00/
·x1+
/01\
\00/
·x2+
/11\
\00/
·x3+
/10\
\00/
·x4

M( uTake1(x1) ) =
/0\
\0/
+
/10\
\00/
·x1

M( length(x1) ) =
/1\
\0/
+
/00\
\10/
·x1

M( uLength(x1, x2) ) =
/1\
\0/
+
/00\
\00/
·x1+
/00\
\10/
·x2

Tuple symbols:
M( A__AND(x1, x2) ) = 0+
[0,0]
·x1+
[0,1]
·x2

M( MARK(x1) ) = 0+
[0,1]
·x1

M( A__ISNATILIST(x1) ) = 0+
[1,0]
·x1

M( A__ISNATLIST(x1) ) = 0+
[1,0]
·x1


Matrix type:
We used a basic matrix type which is not further parametrizeable.


As matrix orders are CE-compatible, we used usable rules w.r.t. argument filtering in the order.
The following usable rules [17] were oriented:

mark(nil) → nil
mark(cons(X1, X2)) → cons(mark(X1), X2)
a__isNatIList(X) → isNatIList(X)
a__and(X1, X2) → and(X1, X2)
a__isNat(X) → isNat(X)
a__isNatList(X) → isNatList(X)
a__zeroszeros
a__length(X) → length(X)
mark(take(X1, X2)) → a__take(mark(X1), mark(X2))
mark(zeros) → a__zeros
mark(uTake2(X1, X2, X3, X4)) → a__uTake2(mark(X1), X2, X3, X4)
mark(uTake1(X)) → a__uTake1(mark(X))
mark(tt) → tt
mark(uLength(X1, X2)) → a__uLength(mark(X1), X2)
mark(s(X)) → s(mark(X))
mark(0) → 0
a__take(X1, X2) → take(X1, X2)
a__uTake1(X) → uTake1(X)
a__uTake2(X1, X2, X3, X4) → uTake2(X1, X2, X3, X4)
a__uLength(X1, X2) → uLength(X1, X2)
a__isNatIList(zeros) → tt
a__isNat(0) → tt
a__take(s(M), cons(N, IL)) → a__uTake2(a__and(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL))), M, N, IL)
a__uTake1(tt) → nil
a__take(0, IL) → a__uTake1(a__isNatIList(IL))
a__zeroscons(0, zeros)
a__isNatList(nil) → tt
mark(length(X)) → a__length(mark(X))
a__isNatIList(IL) → a__isNatList(IL)
mark(isNat(X)) → a__isNat(X)
a__isNat(s(N)) → a__isNat(N)
a__and(tt, T) → mark(T)
mark(isNatList(X)) → a__isNatList(X)
a__isNatIList(cons(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
mark(isNatIList(X)) → a__isNatIList(X)
a__isNat(length(L)) → a__isNatList(L)
mark(and(X1, X2)) → a__and(mark(X1), mark(X2))
a__isNatList(cons(N, L)) → a__and(a__isNat(N), a__isNatList(L))
a__isNatList(take(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__uLength(tt, L) → s(a__length(mark(L)))
a__length(cons(N, L)) → a__uLength(a__and(a__isNat(N), a__isNatList(L)), L)
a__uTake2(tt, M, N, IL) → cons(mark(N), take(M, IL))



↳ QTRS
  ↳ DependencyPairsProof
    ↳ QDP
      ↳ DependencyGraphProof
        ↳ QDP
          ↳ QDPOrderProof
            ↳ QDP
              ↳ DependencyGraphProof
                ↳ AND
                  ↳ QDP
                    ↳ QDPOrderProof
                      ↳ QDP
                        ↳ DependencyGraphProof
                          ↳ QDP
                            ↳ QDPOrderProof
                              ↳ QDP
                                ↳ DependencyGraphProof
                                  ↳ QDP
                                    ↳ QDPOrderProof
                                      ↳ QDP
                                        ↳ QDPOrderProof
                                          ↳ QDP
                                            ↳ QDPOrderProof
                                              ↳ QDP
                                                ↳ DependencyGraphProof
                                                  ↳ AND
                                                    ↳ QDP
                                                    ↳ QDP
                                                      ↳ QDPOrderProof
                                                        ↳ QDP
                                                          ↳ QDPOrderProof
                                                            ↳ QDP
                                                              ↳ Narrowing
                                                                ↳ QDP
                                                                  ↳ DependencyGraphProof
                                                                    ↳ QDP
                                                                      ↳ Narrowing
                                                                        ↳ QDP
                                                                          ↳ DependencyGraphProof
                                                                            ↳ QDP
                                                                              ↳ Narrowing
                                                                                ↳ QDP
                                                                                  ↳ DependencyGraphProof
                                                                                    ↳ QDP
                                                                                      ↳ Narrowing
                                                                                        ↳ QDP
                                                                                          ↳ DependencyGraphProof
                                                                                            ↳ QDP
                                                                                              ↳ QDPOrderProof
                                                                                                ↳ QDP
                                                                                                  ↳ QDPOrderProof
                                                                                                    ↳ QDP
                                                                                                      ↳ QDPOrderProof
                                                                                                        ↳ QDP
                                                                                                          ↳ QDPOrderProof
                                                                                                            ↳ QDP
                                                                                                              ↳ QDPOrderProof
                                                                                                                ↳ QDP
                                                                                                                  ↳ QDPOrderProof
                                                                                                                    ↳ QDP
                                                                                                                      ↳ QDPOrderProof
                                                                                                                        ↳ QDP
                                                                                                                          ↳ QDPOrderProof
QDP
                  ↳ QDP

Q DP problem:
The TRS P consists of the following rules:

A__ISNATLIST(cons(0, y1)) → A__AND(tt, a__isNatList(y1))
MARK(and(and(x0, x1), y1)) → A__AND(a__and(mark(x0), mark(x1)), mark(y1))
A__ISNATLIST(cons(N, L)) → A__ISNATLIST(L)
MARK(and(isNat(x0), y1)) → A__AND(a__isNat(x0), mark(y1))
MARK(and(X1, X2)) → MARK(X1)
A__ISNATILIST(cons(N, IL)) → A__ISNATILIST(IL)
MARK(isNatIList(X)) → A__ISNATILIST(X)
MARK(and(tt, y1)) → A__AND(tt, mark(y1))
MARK(isNatList(X)) → A__ISNATLIST(X)
A__ISNATILIST(cons(0, y1)) → A__AND(tt, a__isNatIList(y1))
MARK(and(X1, X2)) → MARK(X2)
A__AND(tt, T) → MARK(T)

The TRS R consists of the following rules:

a__and(tt, T) → mark(T)
a__isNatIList(IL) → a__isNatList(IL)
a__isNat(0) → tt
a__isNat(s(N)) → a__isNat(N)
a__isNat(length(L)) → a__isNatList(L)
a__isNatIList(zeros) → tt
a__isNatIList(cons(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__isNatList(nil) → tt
a__isNatList(cons(N, L)) → a__and(a__isNat(N), a__isNatList(L))
a__isNatList(take(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__zeroscons(0, zeros)
a__take(0, IL) → a__uTake1(a__isNatIList(IL))
a__uTake1(tt) → nil
a__take(s(M), cons(N, IL)) → a__uTake2(a__and(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL))), M, N, IL)
a__uTake2(tt, M, N, IL) → cons(mark(N), take(M, IL))
a__length(cons(N, L)) → a__uLength(a__and(a__isNat(N), a__isNatList(L)), L)
a__uLength(tt, L) → s(a__length(mark(L)))
mark(and(X1, X2)) → a__and(mark(X1), mark(X2))
mark(isNatIList(X)) → a__isNatIList(X)
mark(isNatList(X)) → a__isNatList(X)
mark(isNat(X)) → a__isNat(X)
mark(length(X)) → a__length(mark(X))
mark(zeros) → a__zeros
mark(take(X1, X2)) → a__take(mark(X1), mark(X2))
mark(uTake1(X)) → a__uTake1(mark(X))
mark(uTake2(X1, X2, X3, X4)) → a__uTake2(mark(X1), X2, X3, X4)
mark(uLength(X1, X2)) → a__uLength(mark(X1), X2)
mark(tt) → tt
mark(0) → 0
mark(s(X)) → s(mark(X))
mark(cons(X1, X2)) → cons(mark(X1), X2)
mark(nil) → nil
a__and(X1, X2) → and(X1, X2)
a__isNatIList(X) → isNatIList(X)
a__isNatList(X) → isNatList(X)
a__isNat(X) → isNat(X)
a__length(X) → length(X)
a__zeroszeros
a__take(X1, X2) → take(X1, X2)
a__uTake1(X) → uTake1(X)
a__uTake2(X1, X2, X3, X4) → uTake2(X1, X2, X3, X4)
a__uLength(X1, X2) → uLength(X1, X2)

Q is empty.
We have to consider all minimal (P,Q,R)-chains.

↳ QTRS
  ↳ DependencyPairsProof
    ↳ QDP
      ↳ DependencyGraphProof
        ↳ QDP
          ↳ QDPOrderProof
            ↳ QDP
              ↳ DependencyGraphProof
                ↳ AND
                  ↳ QDP
QDP

Q DP problem:
The TRS P consists of the following rules:

A__LENGTH(cons(N, L)) → A__ULENGTH(a__and(a__isNat(N), a__isNatList(L)), L)
A__ULENGTH(tt, L) → A__LENGTH(mark(L))

The TRS R consists of the following rules:

a__and(tt, T) → mark(T)
a__isNatIList(IL) → a__isNatList(IL)
a__isNat(0) → tt
a__isNat(s(N)) → a__isNat(N)
a__isNat(length(L)) → a__isNatList(L)
a__isNatIList(zeros) → tt
a__isNatIList(cons(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__isNatList(nil) → tt
a__isNatList(cons(N, L)) → a__and(a__isNat(N), a__isNatList(L))
a__isNatList(take(N, IL)) → a__and(a__isNat(N), a__isNatIList(IL))
a__zeroscons(0, zeros)
a__take(0, IL) → a__uTake1(a__isNatIList(IL))
a__uTake1(tt) → nil
a__take(s(M), cons(N, IL)) → a__uTake2(a__and(a__isNat(M), a__and(a__isNat(N), a__isNatIList(IL))), M, N, IL)
a__uTake2(tt, M, N, IL) → cons(mark(N), take(M, IL))
a__length(cons(N, L)) → a__uLength(a__and(a__isNat(N), a__isNatList(L)), L)
a__uLength(tt, L) → s(a__length(mark(L)))
mark(and(X1, X2)) → a__and(mark(X1), mark(X2))
mark(isNatIList(X)) → a__isNatIList(X)
mark(isNatList(X)) → a__isNatList(X)
mark(isNat(X)) → a__isNat(X)
mark(length(X)) → a__length(mark(X))
mark(zeros) → a__zeros
mark(take(X1, X2)) → a__take(mark(X1), mark(X2))
mark(uTake1(X)) → a__uTake1(mark(X))
mark(uTake2(X1, X2, X3, X4)) → a__uTake2(mark(X1), X2, X3, X4)
mark(uLength(X1, X2)) → a__uLength(mark(X1), X2)
mark(tt) → tt
mark(0) → 0
mark(s(X)) → s(mark(X))
mark(cons(X1, X2)) → cons(mark(X1), X2)
mark(nil) → nil
a__and(X1, X2) → and(X1, X2)
a__isNatIList(X) → isNatIList(X)
a__isNatList(X) → isNatList(X)
a__isNat(X) → isNat(X)
a__length(X) → length(X)
a__zeroszeros
a__take(X1, X2) → take(X1, X2)
a__uTake1(X) → uTake1(X)
a__uTake2(X1, X2, X3, X4) → uTake2(X1, X2, X3, X4)
a__uLength(X1, X2) → uLength(X1, X2)

Q is empty.
We have to consider all minimal (P,Q,R)-chains.