Termination w.r.t. Q proof of /tmp/tmp4kOTAJ/LengthOfFiniteLists_complete

Termination w.r.t. Q of the given QTRS could be proven:

0 QTRS

↳1 DependencyPairsProof (⇔)

↳2 QDP

↳3 DependencyGraphProof (⇔)

↳4 QDP

↳5 QDPOrderProof (⇔)

↳6 QDP

↳7 DependencyGraphProof (⇔)

↳8 AND

  ↳9 QDP

    ↳10 QDPOrderProof (⇔)

    ↳11 QDP

    ↳12 DependencyGraphProof (⇔)

    ↳13 QDP

    ↳14 QDPOrderProof (⇔)

    ↳15 QDP

    ↳16 DependencyGraphProof (⇔)

    ↳17 AND

      ↳18 QDP

        ↳19 QDPOrderProof (⇔)

        ↳20 QDP

        ↳21 DependencyGraphProof (⇔)

        ↳22 QDP

        ↳23 QDPOrderProof (⇔)

        ↳24 QDP

        ↳25 DependencyGraphProof (⇔)

        ↳26 AND

          ↳27 QDP

            ↳28 UsableRulesProof (⇔)

            ↳29 QDP

            ↳30 QDPSizeChangeProof (⇔)

            ↳31 TRUE

          ↳32 QDP

            ↳33 QDPSizeChangeProof (⇔)

            ↳34 TRUE

      ↳35 QDP

        ↳36 QDPOrderProof (⇔)

        ↳37 QDP

        ↳38 DependencyGraphProof (⇔)

        ↳39 TRUE

  ↳40 QDP

    ↳41 QDPSizeChangeProof (⇔)

    ↳42 TRUE

(0) Obligation:

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

a__zeros → cons(0, zeros)
a__U11(tt, V1) → a__U12(a__isNatList(V1))
a__U12(tt) → tt
a__U21(tt, V1) → a__U22(a__isNat(V1))
a__U22(tt) → tt
a__U31(tt, V) → a__U32(a__isNatList(V))
a__U32(tt) → tt
a__U41(tt, V1, V2) → a__U42(a__isNat(V1), V2)
a__U42(tt, V2) → a__U43(a__isNatIList(V2))
a__U43(tt) → tt
a__U51(tt, V1, V2) → a__U52(a__isNat(V1), V2)
a__U52(tt, V2) → a__U53(a__isNatList(V2))
a__U53(tt) → tt
a__U61(tt, L) → s(a__length(mark(L)))
a__and(tt, X) → mark(X)
a__isNat(0) → tt
a__isNat(length(V1)) → a__U11(a__isNatIListKind(V1), V1)
a__isNat(s(V1)) → a__U21(a__isNatKind(V1), V1)
a__isNatIList(V) → a__U31(a__isNatIListKind(V), V)
a__isNatIList(zeros) → tt
a__isNatIList(cons(V1, V2)) → a__U41(a__and(a__isNatKind(V1), isNatIListKind(V2)), V1, V2)
a__isNatIListKind(nil) → tt
a__isNatIListKind(zeros) → tt
a__isNatIListKind(cons(V1, V2)) → a__and(a__isNatKind(V1), isNatIListKind(V2))
a__isNatKind(0) → tt
a__isNatKind(length(V1)) → a__isNatIListKind(V1)
a__isNatKind(s(V1)) → a__isNatKind(V1)
a__isNatList(nil) → tt
a__isNatList(cons(V1, V2)) → a__U51(a__and(a__isNatKind(V1), isNatIListKind(V2)), V1, V2)
a__length(nil) → 0
a__length(cons(N, L)) → a__U61(a__and(a__and(a__isNatList(L), isNatIListKind(L)), and(isNat(N), isNatKind(N))), L)
mark(zeros) → a__zeros
mark(U11(X1, X2)) → a__U11(mark(X1), X2)
mark(U12(X)) → a__U12(mark(X))
mark(isNatList(X)) → a__isNatList(X)
mark(U21(X1, X2)) → a__U21(mark(X1), X2)
mark(U22(X)) → a__U22(mark(X))
mark(isNat(X)) → a__isNat(X)
mark(U31(X1, X2)) → a__U31(mark(X1), X2)
mark(U32(X)) → a__U32(mark(X))
mark(U41(X1, X2, X3)) → a__U41(mark(X1), X2, X3)
mark(U42(X1, X2)) → a__U42(mark(X1), X2)
mark(U43(X)) → a__U43(mark(X))
mark(isNatIList(X)) → a__isNatIList(X)
mark(U51(X1, X2, X3)) → a__U51(mark(X1), X2, X3)
mark(U52(X1, X2)) → a__U52(mark(X1), X2)
mark(U53(X)) → a__U53(mark(X))
mark(U61(X1, X2)) → a__U61(mark(X1), X2)
mark(length(X)) → a__length(mark(X))
mark(and(X1, X2)) → a__and(mark(X1), X2)
mark(isNatIListKind(X)) → a__isNatIListKind(X)
mark(isNatKind(X)) → a__isNatKind(X)
mark(cons(X1, X2)) → cons(mark(X1), X2)
mark(0) → 0
mark(tt) → tt
mark(s(X)) → s(mark(X))
mark(nil) → nil
a__zeros → zeros
a__U11(X1, X2) → U11(X1, X2)
a__U12(X) → U12(X)
a__isNatList(X) → isNatList(X)
a__U21(X1, X2) → U21(X1, X2)
a__U22(X) → U22(X)
a__isNat(X) → isNat(X)
a__U31(X1, X2) → U31(X1, X2)
a__U32(X) → U32(X)
a__U41(X1, X2, X3) → U41(X1, X2, X3)
a__U42(X1, X2) → U42(X1, X2)
a__U43(X) → U43(X)
a__isNatIList(X) → isNatIList(X)
a__U51(X1, X2, X3) → U51(X1, X2, X3)
a__U52(X1, X2) → U52(X1, X2)
a__U53(X) → U53(X)
a__U61(X1, X2) → U61(X1, X2)
a__length(X) → length(X)
a__and(X1, X2) → and(X1, X2)
a__isNatIListKind(X) → isNatIListKind(X)
a__isNatKind(X) → isNatKind(X)

Q is empty.

(1) DependencyPairsProof (EQUIVALENT transformation)

Using Dependency Pairs [AG00,LPAR04] we result in the following initial DP problem.

(2) Obligation:

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

A__U11(tt, V1) → A__U12(a__isNatList(V1))
A__U11(tt, V1) → A__ISNATLIST(V1)
A__U21(tt, V1) → A__U22(a__isNat(V1))
A__U21(tt, V1) → A__ISNAT(V1)
A__U31(tt, V) → A__U32(a__isNatList(V))
A__U31(tt, V) → A__ISNATLIST(V)
A__U41(tt, V1, V2) → A__U42(a__isNat(V1), V2)
A__U41(tt, V1, V2) → A__ISNAT(V1)
A__U42(tt, V2) → A__U43(a__isNatIList(V2))
A__U42(tt, V2) → A__ISNATILIST(V2)
A__U51(tt, V1, V2) → A__U52(a__isNat(V1), V2)
A__U51(tt, V1, V2) → A__ISNAT(V1)
A__U52(tt, V2) → A__U53(a__isNatList(V2))
A__U52(tt, V2) → A__ISNATLIST(V2)
A__U61(tt, L) → A__LENGTH(mark(L))
A__U61(tt, L) → MARK(L)
A__AND(tt, X) → MARK(X)
A__ISNAT(length(V1)) → A__U11(a__isNatIListKind(V1), V1)
A__ISNAT(length(V1)) → A__ISNATILISTKIND(V1)
A__ISNAT(s(V1)) → A__U21(a__isNatKind(V1), V1)
A__ISNAT(s(V1)) → A__ISNATKIND(V1)
A__ISNATILIST(V) → A__U31(a__isNatIListKind(V), V)
A__ISNATILIST(V) → A__ISNATILISTKIND(V)
A__ISNATILIST(cons(V1, V2)) → A__U41(a__and(a__isNatKind(V1), isNatIListKind(V2)), V1, V2)
A__ISNATILIST(cons(V1, V2)) → A__AND(a__isNatKind(V1), isNatIListKind(V2))
A__ISNATILIST(cons(V1, V2)) → A__ISNATKIND(V1)
A__ISNATILISTKIND(cons(V1, V2)) → A__AND(a__isNatKind(V1), isNatIListKind(V2))
A__ISNATILISTKIND(cons(V1, V2)) → A__ISNATKIND(V1)
A__ISNATKIND(length(V1)) → A__ISNATILISTKIND(V1)
A__ISNATKIND(s(V1)) → A__ISNATKIND(V1)
A__ISNATLIST(cons(V1, V2)) → A__U51(a__and(a__isNatKind(V1), isNatIListKind(V2)), V1, V2)
A__ISNATLIST(cons(V1, V2)) → A__AND(a__isNatKind(V1), isNatIListKind(V2))
A__ISNATLIST(cons(V1, V2)) → A__ISNATKIND(V1)
A__LENGTH(cons(N, L)) → A__U61(a__and(a__and(a__isNatList(L), isNatIListKind(L)), and(isNat(N), isNatKind(N))), L)
A__LENGTH(cons(N, L)) → A__AND(a__and(a__isNatList(L), isNatIListKind(L)), and(isNat(N), isNatKind(N)))
A__LENGTH(cons(N, L)) → A__AND(a__isNatList(L), isNatIListKind(L))
A__LENGTH(cons(N, L)) → A__ISNATLIST(L)
MARK(zeros) → A__ZEROS
MARK(U11(X1, X2)) → A__U11(mark(X1), X2)
MARK(U11(X1, X2)) → MARK(X1)
MARK(U12(X)) → A__U12(mark(X))
MARK(U12(X)) → MARK(X)
MARK(isNatList(X)) → A__ISNATLIST(X)
MARK(U21(X1, X2)) → A__U21(mark(X1), X2)
MARK(U21(X1, X2)) → MARK(X1)
MARK(U22(X)) → A__U22(mark(X))
MARK(U22(X)) → MARK(X)
MARK(isNat(X)) → A__ISNAT(X)
MARK(U31(X1, X2)) → A__U31(mark(X1), X2)
MARK(U31(X1, X2)) → MARK(X1)
MARK(U32(X)) → A__U32(mark(X))
MARK(U32(X)) → MARK(X)
MARK(U41(X1, X2, X3)) → A__U41(mark(X1), X2, X3)
MARK(U41(X1, X2, X3)) → MARK(X1)
MARK(U42(X1, X2)) → A__U42(mark(X1), X2)
MARK(U42(X1, X2)) → MARK(X1)
MARK(U43(X)) → A__U43(mark(X))
MARK(U43(X)) → MARK(X)
MARK(isNatIList(X)) → A__ISNATILIST(X)
MARK(U51(X1, X2, X3)) → A__U51(mark(X1), X2, X3)
MARK(U51(X1, X2, X3)) → MARK(X1)
MARK(U52(X1, X2)) → A__U52(mark(X1), X2)
MARK(U52(X1, X2)) → MARK(X1)
MARK(U53(X)) → A__U53(mark(X))
MARK(U53(X)) → MARK(X)
MARK(U61(X1, X2)) → A__U61(mark(X1), X2)
MARK(U61(X1, X2)) → MARK(X1)
MARK(length(X)) → A__LENGTH(mark(X))
MARK(length(X)) → MARK(X)
MARK(and(X1, X2)) → A__AND(mark(X1), X2)
MARK(and(X1, X2)) → MARK(X1)
MARK(isNatIListKind(X)) → A__ISNATILISTKIND(X)
MARK(isNatKind(X)) → A__ISNATKIND(X)
MARK(cons(X1, X2)) → MARK(X1)
MARK(s(X)) → MARK(X)

The TRS R consists of the following rules:

a__zeros → cons(0, zeros)
a__U11(tt, V1) → a__U12(a__isNatList(V1))
a__U12(tt) → tt
a__U21(tt, V1) → a__U22(a__isNat(V1))
a__U22(tt) → tt
a__U31(tt, V) → a__U32(a__isNatList(V))
a__U32(tt) → tt
a__U41(tt, V1, V2) → a__U42(a__isNat(V1), V2)
a__U42(tt, V2) → a__U43(a__isNatIList(V2))
a__U43(tt) → tt
a__U51(tt, V1, V2) → a__U52(a__isNat(V1), V2)
a__U52(tt, V2) → a__U53(a__isNatList(V2))
a__U53(tt) → tt
a__U61(tt, L) → s(a__length(mark(L)))
a__and(tt, X) → mark(X)
a__isNat(0) → tt
a__isNat(length(V1)) → a__U11(a__isNatIListKind(V1), V1)
a__isNat(s(V1)) → a__U21(a__isNatKind(V1), V1)
a__isNatIList(V) → a__U31(a__isNatIListKind(V), V)
a__isNatIList(zeros) → tt
a__isNatIList(cons(V1, V2)) → a__U41(a__and(a__isNatKind(V1), isNatIListKind(V2)), V1, V2)
a__isNatIListKind(nil) → tt
a__isNatIListKind(zeros) → tt
a__isNatIListKind(cons(V1, V2)) → a__and(a__isNatKind(V1), isNatIListKind(V2))
a__isNatKind(0) → tt
a__isNatKind(length(V1)) → a__isNatIListKind(V1)
a__isNatKind(s(V1)) → a__isNatKind(V1)
a__isNatList(nil) → tt
a__isNatList(cons(V1, V2)) → a__U51(a__and(a__isNatKind(V1), isNatIListKind(V2)), V1, V2)
a__length(nil) → 0
a__length(cons(N, L)) → a__U61(a__and(a__and(a__isNatList(L), isNatIListKind(L)), and(isNat(N), isNatKind(N))), L)
mark(zeros) → a__zeros
mark(U11(X1, X2)) → a__U11(mark(X1), X2)
mark(U12(X)) → a__U12(mark(X))
mark(isNatList(X)) → a__isNatList(X)
mark(U21(X1, X2)) → a__U21(mark(X1), X2)
mark(U22(X)) → a__U22(mark(X))
mark(isNat(X)) → a__isNat(X)
mark(U31(X1, X2)) → a__U31(mark(X1), X2)
mark(U32(X)) → a__U32(mark(X))
mark(U41(X1, X2, X3)) → a__U41(mark(X1), X2, X3)
mark(U42(X1, X2)) → a__U42(mark(X1), X2)
mark(U43(X)) → a__U43(mark(X))
mark(isNatIList(X)) → a__isNatIList(X)
mark(U51(X1, X2, X3)) → a__U51(mark(X1), X2, X3)
mark(U52(X1, X2)) → a__U52(mark(X1), X2)
mark(U53(X)) → a__U53(mark(X))
mark(U61(X1, X2)) → a__U61(mark(X1), X2)
mark(length(X)) → a__length(mark(X))
mark(and(X1, X2)) → a__and(mark(X1), X2)
mark(isNatIListKind(X)) → a__isNatIListKind(X)
mark(isNatKind(X)) → a__isNatKind(X)
mark(cons(X1, X2)) → cons(mark(X1), X2)
mark(0) → 0
mark(tt) → tt
mark(s(X)) → s(mark(X))
mark(nil) → nil
a__zeros → zeros
a__U11(X1, X2) → U11(X1, X2)
a__U12(X) → U12(X)
a__isNatList(X) → isNatList(X)
a__U21(X1, X2) → U21(X1, X2)
a__U22(X) → U22(X)
a__isNat(X) → isNat(X)
a__U31(X1, X2) → U31(X1, X2)
a__U32(X) → U32(X)
a__U41(X1, X2, X3) → U41(X1, X2, X3)
a__U42(X1, X2) → U42(X1, X2)
a__U43(X) → U43(X)
a__isNatIList(X) → isNatIList(X)
a__U51(X1, X2, X3) → U51(X1, X2, X3)
a__U52(X1, X2) → U52(X1, X2)
a__U53(X) → U53(X)
a__U61(X1, X2) → U61(X1, X2)
a__length(X) → length(X)
a__and(X1, X2) → and(X1, X2)
a__isNatIListKind(X) → isNatIListKind(X)
a__isNatKind(X) → isNatKind(X)

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

(3) DependencyGraphProof (EQUIVALENT transformation)

The approximation of the Dependency Graph [LPAR04,FROCOS05,EDGSTAR] contains 1 SCC with 11 less nodes.

(4) Obligation:

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

A__U11(tt, V1) → A__ISNATLIST(V1)
A__ISNATLIST(cons(V1, V2)) → A__U51(a__and(a__isNatKind(V1), isNatIListKind(V2)), V1, V2)
A__U51(tt, V1, V2) → A__U52(a__isNat(V1), V2)
A__U52(tt, V2) → A__ISNATLIST(V2)
A__ISNATLIST(cons(V1, V2)) → A__AND(a__isNatKind(V1), isNatIListKind(V2))
A__AND(tt, X) → MARK(X)
MARK(U11(X1, X2)) → A__U11(mark(X1), X2)
MARK(U11(X1, X2)) → MARK(X1)
MARK(U12(X)) → MARK(X)
MARK(isNatList(X)) → A__ISNATLIST(X)
A__ISNATLIST(cons(V1, V2)) → A__ISNATKIND(V1)
A__ISNATKIND(length(V1)) → A__ISNATILISTKIND(V1)
A__ISNATILISTKIND(cons(V1, V2)) → A__AND(a__isNatKind(V1), isNatIListKind(V2))
A__ISNATILISTKIND(cons(V1, V2)) → A__ISNATKIND(V1)
A__ISNATKIND(s(V1)) → A__ISNATKIND(V1)
MARK(U21(X1, X2)) → A__U21(mark(X1), X2)
A__U21(tt, V1) → A__ISNAT(V1)
A__ISNAT(length(V1)) → A__U11(a__isNatIListKind(V1), V1)
A__ISNAT(length(V1)) → A__ISNATILISTKIND(V1)
A__ISNAT(s(V1)) → A__U21(a__isNatKind(V1), V1)
A__ISNAT(s(V1)) → A__ISNATKIND(V1)
MARK(U21(X1, X2)) → MARK(X1)
MARK(U22(X)) → MARK(X)
MARK(isNat(X)) → A__ISNAT(X)
MARK(U31(X1, X2)) → A__U31(mark(X1), X2)
A__U31(tt, V) → A__ISNATLIST(V)
MARK(U31(X1, X2)) → MARK(X1)
MARK(U32(X)) → MARK(X)
MARK(U41(X1, X2, X3)) → A__U41(mark(X1), X2, X3)
A__U41(tt, V1, V2) → A__U42(a__isNat(V1), V2)
A__U42(tt, V2) → A__ISNATILIST(V2)
A__ISNATILIST(V) → A__U31(a__isNatIListKind(V), V)
A__ISNATILIST(V) → A__ISNATILISTKIND(V)
A__ISNATILIST(cons(V1, V2)) → A__U41(a__and(a__isNatKind(V1), isNatIListKind(V2)), V1, V2)
A__U41(tt, V1, V2) → A__ISNAT(V1)
A__ISNATILIST(cons(V1, V2)) → A__AND(a__isNatKind(V1), isNatIListKind(V2))
A__ISNATILIST(cons(V1, V2)) → A__ISNATKIND(V1)
MARK(U41(X1, X2, X3)) → MARK(X1)
MARK(U42(X1, X2)) → A__U42(mark(X1), X2)
MARK(U42(X1, X2)) → MARK(X1)
MARK(U43(X)) → MARK(X)
MARK(isNatIList(X)) → A__ISNATILIST(X)
MARK(U51(X1, X2, X3)) → A__U51(mark(X1), X2, X3)
A__U51(tt, V1, V2) → A__ISNAT(V1)
MARK(U51(X1, X2, X3)) → MARK(X1)
MARK(U52(X1, X2)) → A__U52(mark(X1), X2)
MARK(U52(X1, X2)) → MARK(X1)
MARK(U53(X)) → MARK(X)
MARK(U61(X1, X2)) → A__U61(mark(X1), X2)
A__U61(tt, L) → A__LENGTH(mark(L))
A__LENGTH(cons(N, L)) → A__U61(a__and(a__and(a__isNatList(L), isNatIListKind(L)), and(isNat(N), isNatKind(N))), L)
A__U61(tt, L) → MARK(L)
MARK(U61(X1, X2)) → MARK(X1)
MARK(length(X)) → A__LENGTH(mark(X))
A__LENGTH(cons(N, L)) → A__AND(a__and(a__isNatList(L), isNatIListKind(L)), and(isNat(N), isNatKind(N)))
A__LENGTH(cons(N, L)) → A__AND(a__isNatList(L), isNatIListKind(L))
A__LENGTH(cons(N, L)) → A__ISNATLIST(L)
MARK(length(X)) → MARK(X)
MARK(and(X1, X2)) → A__AND(mark(X1), X2)
MARK(and(X1, X2)) → MARK(X1)
MARK(isNatIListKind(X)) → A__ISNATILISTKIND(X)
MARK(isNatKind(X)) → A__ISNATKIND(X)
MARK(cons(X1, X2)) → MARK(X1)
MARK(s(X)) → MARK(X)

The TRS R consists of the following rules:

a__zeros → cons(0, zeros)
a__U11(tt, V1) → a__U12(a__isNatList(V1))
a__U12(tt) → tt
a__U21(tt, V1) → a__U22(a__isNat(V1))
a__U22(tt) → tt
a__U31(tt, V) → a__U32(a__isNatList(V))
a__U32(tt) → tt
a__U41(tt, V1, V2) → a__U42(a__isNat(V1), V2)
a__U42(tt, V2) → a__U43(a__isNatIList(V2))
a__U43(tt) → tt
a__U51(tt, V1, V2) → a__U52(a__isNat(V1), V2)
a__U52(tt, V2) → a__U53(a__isNatList(V2))
a__U53(tt) → tt
a__U61(tt, L) → s(a__length(mark(L)))
a__and(tt, X) → mark(X)
a__isNat(0) → tt
a__isNat(length(V1)) → a__U11(a__isNatIListKind(V1), V1)
a__isNat(s(V1)) → a__U21(a__isNatKind(V1), V1)
a__isNatIList(V) → a__U31(a__isNatIListKind(V), V)
a__isNatIList(zeros) → tt
a__isNatIList(cons(V1, V2)) → a__U41(a__and(a__isNatKind(V1), isNatIListKind(V2)), V1, V2)
a__isNatIListKind(nil) → tt
a__isNatIListKind(zeros) → tt
a__isNatIListKind(cons(V1, V2)) → a__and(a__isNatKind(V1), isNatIListKind(V2))
a__isNatKind(0) → tt
a__isNatKind(length(V1)) → a__isNatIListKind(V1)
a__isNatKind(s(V1)) → a__isNatKind(V1)
a__isNatList(nil) → tt
a__isNatList(cons(V1, V2)) → a__U51(a__and(a__isNatKind(V1), isNatIListKind(V2)), V1, V2)
a__length(nil) → 0
a__length(cons(N, L)) → a__U61(a__and(a__and(a__isNatList(L), isNatIListKind(L)), and(isNat(N), isNatKind(N))), L)
mark(zeros) → a__zeros
mark(U11(X1, X2)) → a__U11(mark(X1), X2)
mark(U12(X)) → a__U12(mark(X))
mark(isNatList(X)) → a__isNatList(X)
mark(U21(X1, X2)) → a__U21(mark(X1), X2)
mark(U22(X)) → a__U22(mark(X))
mark(isNat(X)) → a__isNat(X)
mark(U31(X1, X2)) → a__U31(mark(X1), X2)
mark(U32(X)) → a__U32(mark(X))
mark(U41(X1, X2, X3)) → a__U41(mark(X1), X2, X3)
mark(U42(X1, X2)) → a__U42(mark(X1), X2)
mark(U43(X)) → a__U43(mark(X))
mark(isNatIList(X)) → a__isNatIList(X)
mark(U51(X1, X2, X3)) → a__U51(mark(X1), X2, X3)
mark(U52(X1, X2)) → a__U52(mark(X1), X2)
mark(U53(X)) → a__U53(mark(X))
mark(U61(X1, X2)) → a__U61(mark(X1), X2)
mark(length(X)) → a__length(mark(X))
mark(and(X1, X2)) → a__and(mark(X1), X2)
mark(isNatIListKind(X)) → a__isNatIListKind(X)
mark(isNatKind(X)) → a__isNatKind(X)
mark(cons(X1, X2)) → cons(mark(X1), X2)
mark(0) → 0
mark(tt) → tt
mark(s(X)) → s(mark(X))
mark(nil) → nil
a__zeros → zeros
a__U11(X1, X2) → U11(X1, X2)
a__U12(X) → U12(X)
a__isNatList(X) → isNatList(X)
a__U21(X1, X2) → U21(X1, X2)
a__U22(X) → U22(X)
a__isNat(X) → isNat(X)
a__U31(X1, X2) → U31(X1, X2)
a__U32(X) → U32(X)
a__U41(X1, X2, X3) → U41(X1, X2, X3)
a__U42(X1, X2) → U42(X1, X2)
a__U43(X) → U43(X)
a__isNatIList(X) → isNatIList(X)
a__U51(X1, X2, X3) → U51(X1, X2, X3)
a__U52(X1, X2) → U52(X1, X2)
a__U53(X) → U53(X)
a__U61(X1, X2) → U61(X1, X2)
a__length(X) → length(X)
a__and(X1, X2) → and(X1, X2)
a__isNatIListKind(X) → isNatIListKind(X)
a__isNatKind(X) → isNatKind(X)

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

(5) QDPOrderProof (EQUIVALENT transformation)

We use the reduction pair processor [LPAR04].

The following pairs can be oriented strictly and are deleted.

MARK(U41(X1, X2, X3)) → A__U41(mark(X1), X2, X3)
MARK(U41(X1, X2, X3)) → MARK(X1)
MARK(U42(X1, X2)) → A__U42(mark(X1), X2)
MARK(U42(X1, X2)) → MARK(X1)
MARK(isNatIList(X)) → A__ISNATILIST(X)

The remaining pairs can at least be oriented weakly.
Used ordering: Polynomial interpretation [POLO]:

POL(0) = 0
POL(A__AND(x₁, x₂)) = x₂
POL(A__ISNAT(x₁)) = 0
POL(A__ISNATILIST(x₁)) = 0
POL(A__ISNATILISTKIND(x₁)) = 0
POL(A__ISNATKIND(x₁)) = 0
POL(A__ISNATLIST(x₁)) = 0
POL(A__LENGTH(x₁)) = x₁
POL(A__U11(x₁, x₂)) = 0
POL(A__U21(x₁, x₂)) = 0
POL(A__U31(x₁, x₂)) = 0
POL(A__U41(x₁, x₂, x₃)) = 0
POL(A__U42(x₁, x₂)) = 0
POL(A__U51(x₁, x₂, x₃)) = 0
POL(A__U52(x₁, x₂)) = 0
POL(A__U61(x₁, x₂)) = x₂
POL(MARK(x₁)) = x₁
POL(U11(x₁, x₂)) = x₁
POL(U12(x₁)) = x₁
POL(U21(x₁, x₂)) = x₁
POL(U22(x₁)) = x₁
POL(U31(x₁, x₂)) = x₁
POL(U32(x₁)) = x₁
POL(U41(x₁, x₂, x₃)) = 1 + x₁
POL(U42(x₁, x₂)) = 1 + x₁
POL(U43(x₁)) = x₁
POL(U51(x₁, x₂, x₃)) = x₁
POL(U52(x₁, x₂)) = x₁
POL(U53(x₁)) = x₁
POL(U61(x₁, x₂)) = x₁ + x₂
POL(a__U11(x₁, x₂)) = x₁
POL(a__U12(x₁)) = x₁
POL(a__U21(x₁, x₂)) = x₁
POL(a__U22(x₁)) = x₁
POL(a__U31(x₁, x₂)) = x₁
POL(a__U32(x₁)) = x₁
POL(a__U41(x₁, x₂, x₃)) = 1 + x₁
POL(a__U42(x₁, x₂)) = 1 + x₁
POL(a__U43(x₁)) = x₁
POL(a__U51(x₁, x₂, x₃)) = x₁
POL(a__U52(x₁, x₂)) = x₁
POL(a__U53(x₁)) = x₁
POL(a__U61(x₁, x₂)) = x₁ + x₂
POL(a__and(x₁, x₂)) = x₁ + x₂
POL(a__isNat(x₁)) = 0
POL(a__isNatIList(x₁)) = 1
POL(a__isNatIListKind(x₁)) = 0
POL(a__isNatKind(x₁)) = 0
POL(a__isNatList(x₁)) = 0
POL(a__length(x₁)) = x₁
POL(a__zeros) = 0
POL(and(x₁, x₂)) = x₁ + x₂
POL(cons(x₁, x₂)) = x₁ + x₂
POL(isNat(x₁)) = 0
POL(isNatIList(x₁)) = 1
POL(isNatIListKind(x₁)) = 0
POL(isNatKind(x₁)) = 0
POL(isNatList(x₁)) = 0
POL(length(x₁)) = x₁
POL(mark(x₁)) = x₁
POL(nil) = 0
POL(s(x₁)) = x₁
POL(tt) = 0
POL(zeros) = 0

The following usable rules [FROCOS05] were oriented:

mark(s(X)) → s(mark(X))
mark(tt) → tt
mark(0) → 0
mark(cons(X1, X2)) → cons(mark(X1), X2)
a__isNatKind(length(V1)) → a__isNatIListKind(V1)
mark(and(X1, X2)) → a__and(mark(X1), X2)
a__isNatKind(s(V1)) → a__isNatKind(V1)
a__isNatIListKind(cons(V1, V2)) → a__and(a__isNatKind(V1), isNatIListKind(V2))
a__and(tt, X) → mark(X)
mark(isNatIListKind(X)) → a__isNatIListKind(X)
mark(isNatKind(X)) → a__isNatKind(X)
mark(length(X)) → a__length(mark(X))
a__isNat(X) → isNat(X)
a__U22(X) → U22(X)
a__U21(X1, X2) → U21(X1, X2)
a__isNatList(X) → isNatList(X)
a__U12(X) → U12(X)
a__U11(X1, X2) → U11(X1, X2)
a__zeros → zeros
mark(nil) → nil
a__U51(X1, X2, X3) → U51(X1, X2, X3)
a__U52(X1, X2) → U52(X1, X2)
a__U43(X) → U43(X)
a__isNatIList(X) → isNatIList(X)
a__U41(X1, X2, X3) → U41(X1, X2, X3)
a__U42(X1, X2) → U42(X1, X2)
a__U31(X1, X2) → U31(X1, X2)
a__U32(X) → U32(X)
a__isNatIListKind(X) → isNatIListKind(X)
a__isNatKind(X) → isNatKind(X)
a__length(X) → length(X)
a__and(X1, X2) → and(X1, X2)
a__U53(X) → U53(X)
a__U61(X1, X2) → U61(X1, X2)
a__U12(tt) → tt
a__U21(tt, V1) → a__U22(a__isNat(V1))
a__zeros → cons(0, zeros)
a__U11(tt, V1) → a__U12(a__isNatList(V1))
a__U32(tt) → tt
a__U41(tt, V1, V2) → a__U42(a__isNat(V1), V2)
a__U22(tt) → tt
a__U31(tt, V) → a__U32(a__isNatList(V))
a__U51(tt, V1, V2) → a__U52(a__isNat(V1), V2)
a__U52(tt, V2) → a__U53(a__isNatList(V2))
a__U42(tt, V2) → a__U43(a__isNatIList(V2))
a__U43(tt) → tt
a__isNat(0) → tt
a__U53(tt) → tt
a__U61(tt, L) → s(a__length(mark(L)))
a__isNat(s(V1)) → a__U21(a__isNatKind(V1), V1)
a__isNat(length(V1)) → a__U11(a__isNatIListKind(V1), V1)
a__isNatIList(zeros) → tt
a__isNatIList(V) → a__U31(a__isNatIListKind(V), V)
a__isNatIListKind(nil) → tt
a__isNatIList(cons(V1, V2)) → a__U41(a__and(a__isNatKind(V1), isNatIListKind(V2)), V1, V2)
a__isNatIListKind(zeros) → tt
a__isNatKind(0) → tt
a__isNatList(nil) → tt
a__length(nil) → 0
a__isNatList(cons(V1, V2)) → a__U51(a__and(a__isNatKind(V1), isNatIListKind(V2)), V1, V2)
mark(zeros) → a__zeros
a__length(cons(N, L)) → a__U61(a__and(a__and(a__isNatList(L), isNatIListKind(L)), and(isNat(N), isNatKind(N))), L)
mark(U11(X1, X2)) → a__U11(mark(X1), X2)
mark(U12(X)) → a__U12(mark(X))
mark(isNatList(X)) → a__isNatList(X)
mark(U21(X1, X2)) → a__U21(mark(X1), X2)
mark(U22(X)) → a__U22(mark(X))
mark(isNat(X)) → a__isNat(X)
mark(U31(X1, X2)) → a__U31(mark(X1), X2)
mark(U32(X)) → a__U32(mark(X))
mark(U41(X1, X2, X3)) → a__U41(mark(X1), X2, X3)
mark(U42(X1, X2)) → a__U42(mark(X1), X2)
mark(U43(X)) → a__U43(mark(X))
mark(isNatIList(X)) → a__isNatIList(X)
mark(U51(X1, X2, X3)) → a__U51(mark(X1), X2, X3)
mark(U52(X1, X2)) → a__U52(mark(X1), X2)
mark(U53(X)) → a__U53(mark(X))
mark(U61(X1, X2)) → a__U61(mark(X1), X2)

(6) Obligation:

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

A__U11(tt, V1) → A__ISNATLIST(V1)
A__ISNATLIST(cons(V1, V2)) → A__U51(a__and(a__isNatKind(V1), isNatIListKind(V2)), V1, V2)
A__U51(tt, V1, V2) → A__U52(a__isNat(V1), V2)
A__U52(tt, V2) → A__ISNATLIST(V2)
A__ISNATLIST(cons(V1, V2)) → A__AND(a__isNatKind(V1), isNatIListKind(V2))
A__AND(tt, X) → MARK(X)
MARK(U11(X1, X2)) → A__U11(mark(X1), X2)
MARK(U11(X1, X2)) → MARK(X1)
MARK(U12(X)) → MARK(X)
MARK(isNatList(X)) → A__ISNATLIST(X)
A__ISNATLIST(cons(V1, V2)) → A__ISNATKIND(V1)
A__ISNATKIND(length(V1)) → A__ISNATILISTKIND(V1)
A__ISNATILISTKIND(cons(V1, V2)) → A__AND(a__isNatKind(V1), isNatIListKind(V2))
A__ISNATILISTKIND(cons(V1, V2)) → A__ISNATKIND(V1)
A__ISNATKIND(s(V1)) → A__ISNATKIND(V1)
MARK(U21(X1, X2)) → A__U21(mark(X1), X2)
A__U21(tt, V1) → A__ISNAT(V1)
A__ISNAT(length(V1)) → A__U11(a__isNatIListKind(V1), V1)
A__ISNAT(length(V1)) → A__ISNATILISTKIND(V1)
A__ISNAT(s(V1)) → A__U21(a__isNatKind(V1), V1)
A__ISNAT(s(V1)) → A__ISNATKIND(V1)
MARK(U21(X1, X2)) → MARK(X1)
MARK(U22(X)) → MARK(X)
MARK(isNat(X)) → A__ISNAT(X)
MARK(U31(X1, X2)) → A__U31(mark(X1), X2)
A__U31(tt, V) → A__ISNATLIST(V)
MARK(U31(X1, X2)) → MARK(X1)
MARK(U32(X)) → MARK(X)
A__U41(tt, V1, V2) → A__U42(a__isNat(V1), V2)
A__U42(tt, V2) → A__ISNATILIST(V2)
A__ISNATILIST(V) → A__U31(a__isNatIListKind(V), V)
A__ISNATILIST(V) → A__ISNATILISTKIND(V)
A__ISNATILIST(cons(V1, V2)) → A__U41(a__and(a__isNatKind(V1), isNatIListKind(V2)), V1, V2)
A__U41(tt, V1, V2) → A__ISNAT(V1)
A__ISNATILIST(cons(V1, V2)) → A__AND(a__isNatKind(V1), isNatIListKind(V2))
A__ISNATILIST(cons(V1, V2)) → A__ISNATKIND(V1)
MARK(U43(X)) → MARK(X)
MARK(U51(X1, X2, X3)) → A__U51(mark(X1), X2, X3)
A__U51(tt, V1, V2) → A__ISNAT(V1)
MARK(U51(X1, X2, X3)) → MARK(X1)
MARK(U52(X1, X2)) → A__U52(mark(X1), X2)
MARK(U52(X1, X2)) → MARK(X1)
MARK(U53(X)) → MARK(X)
MARK(U61(X1, X2)) → A__U61(mark(X1), X2)
A__U61(tt, L) → A__LENGTH(mark(L))
A__LENGTH(cons(N, L)) → A__U61(a__and(a__and(a__isNatList(L), isNatIListKind(L)), and(isNat(N), isNatKind(N))), L)
A__U61(tt, L) → MARK(L)
MARK(U61(X1, X2)) → MARK(X1)
MARK(length(X)) → A__LENGTH(mark(X))
A__LENGTH(cons(N, L)) → A__AND(a__and(a__isNatList(L), isNatIListKind(L)), and(isNat(N), isNatKind(N)))
A__LENGTH(cons(N, L)) → A__AND(a__isNatList(L), isNatIListKind(L))
A__LENGTH(cons(N, L)) → A__ISNATLIST(L)
MARK(length(X)) → MARK(X)
MARK(and(X1, X2)) → A__AND(mark(X1), X2)
MARK(and(X1, X2)) → MARK(X1)
MARK(isNatIListKind(X)) → A__ISNATILISTKIND(X)
MARK(isNatKind(X)) → A__ISNATKIND(X)
MARK(cons(X1, X2)) → MARK(X1)
MARK(s(X)) → MARK(X)

The TRS R consists of the following rules:

a__zeros → cons(0, zeros)
a__U11(tt, V1) → a__U12(a__isNatList(V1))
a__U12(tt) → tt
a__U21(tt, V1) → a__U22(a__isNat(V1))
a__U22(tt) → tt
a__U31(tt, V) → a__U32(a__isNatList(V))
a__U32(tt) → tt
a__U41(tt, V1, V2) → a__U42(a__isNat(V1), V2)
a__U42(tt, V2) → a__U43(a__isNatIList(V2))
a__U43(tt) → tt
a__U51(tt, V1, V2) → a__U52(a__isNat(V1), V2)
a__U52(tt, V2) → a__U53(a__isNatList(V2))
a__U53(tt) → tt
a__U61(tt, L) → s(a__length(mark(L)))
a__and(tt, X) → mark(X)
a__isNat(0) → tt
a__isNat(length(V1)) → a__U11(a__isNatIListKind(V1), V1)
a__isNat(s(V1)) → a__U21(a__isNatKind(V1), V1)
a__isNatIList(V) → a__U31(a__isNatIListKind(V), V)
a__isNatIList(zeros) → tt
a__isNatIList(cons(V1, V2)) → a__U41(a__and(a__isNatKind(V1), isNatIListKind(V2)), V1, V2)
a__isNatIListKind(nil) → tt
a__isNatIListKind(zeros) → tt
a__isNatIListKind(cons(V1, V2)) → a__and(a__isNatKind(V1), isNatIListKind(V2))
a__isNatKind(0) → tt
a__isNatKind(length(V1)) → a__isNatIListKind(V1)
a__isNatKind(s(V1)) → a__isNatKind(V1)
a__isNatList(nil) → tt
a__isNatList(cons(V1, V2)) → a__U51(a__and(a__isNatKind(V1), isNatIListKind(V2)), V1, V2)
a__length(nil) → 0
a__length(cons(N, L)) → a__U61(a__and(a__and(a__isNatList(L), isNatIListKind(L)), and(isNat(N), isNatKind(N))), L)
mark(zeros) → a__zeros
mark(U11(X1, X2)) → a__U11(mark(X1), X2)
mark(U12(X)) → a__U12(mark(X))
mark(isNatList(X)) → a__isNatList(X)
mark(U21(X1, X2)) → a__U21(mark(X1), X2)
mark(U22(X)) → a__U22(mark(X))
mark(isNat(X)) → a__isNat(X)
mark(U31(X1, X2)) → a__U31(mark(X1), X2)
mark(U32(X)) → a__U32(mark(X))
mark(U41(X1, X2, X3)) → a__U41(mark(X1), X2, X3)
mark(U42(X1, X2)) → a__U42(mark(X1), X2)
mark(U43(X)) → a__U43(mark(X))
mark(isNatIList(X)) → a__isNatIList(X)
mark(U51(X1, X2, X3)) → a__U51(mark(X1), X2, X3)
mark(U52(X1, X2)) → a__U52(mark(X1), X2)
mark(U53(X)) → a__U53(mark(X))
mark(U61(X1, X2)) → a__U61(mark(X1), X2)
mark(length(X)) → a__length(mark(X))
mark(and(X1, X2)) → a__and(mark(X1), X2)
mark(isNatIListKind(X)) → a__isNatIListKind(X)
mark(isNatKind(X)) → a__isNatKind(X)
mark(cons(X1, X2)) → cons(mark(X1), X2)
mark(0) → 0
mark(tt) → tt
mark(s(X)) → s(mark(X))
mark(nil) → nil
a__zeros → zeros
a__U11(X1, X2) → U11(X1, X2)
a__U12(X) → U12(X)
a__isNatList(X) → isNatList(X)
a__U21(X1, X2) → U21(X1, X2)
a__U22(X) → U22(X)
a__isNat(X) → isNat(X)
a__U31(X1, X2) → U31(X1, X2)
a__U32(X) → U32(X)
a__U41(X1, X2, X3) → U41(X1, X2, X3)
a__U42(X1, X2) → U42(X1, X2)
a__U43(X) → U43(X)
a__isNatIList(X) → isNatIList(X)
a__U51(X1, X2, X3) → U51(X1, X2, X3)
a__U52(X1, X2) → U52(X1, X2)
a__U53(X) → U53(X)
a__U61(X1, X2) → U61(X1, X2)
a__length(X) → length(X)
a__and(X1, X2) → and(X1, X2)
a__isNatIListKind(X) → isNatIListKind(X)
a__isNatKind(X) → isNatKind(X)

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

(7) DependencyGraphProof (EQUIVALENT transformation)

The approximation of the Dependency Graph [LPAR04,FROCOS05,EDGSTAR] contains 2 SCCs with 5 less nodes.

(8) Complex Obligation (AND)

(9) Obligation:

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

A__ISNATLIST(cons(V1, V2)) → A__U51(a__and(a__isNatKind(V1), isNatIListKind(V2)), V1, V2)
A__U51(tt, V1, V2) → A__U52(a__isNat(V1), V2)
A__U52(tt, V2) → A__ISNATLIST(V2)
A__ISNATLIST(cons(V1, V2)) → A__AND(a__isNatKind(V1), isNatIListKind(V2))
A__AND(tt, X) → MARK(X)
MARK(U11(X1, X2)) → A__U11(mark(X1), X2)
A__U11(tt, V1) → A__ISNATLIST(V1)
A__ISNATLIST(cons(V1, V2)) → A__ISNATKIND(V1)
A__ISNATKIND(length(V1)) → A__ISNATILISTKIND(V1)
A__ISNATILISTKIND(cons(V1, V2)) → A__AND(a__isNatKind(V1), isNatIListKind(V2))
A__ISNATILISTKIND(cons(V1, V2)) → A__ISNATKIND(V1)
A__ISNATKIND(s(V1)) → A__ISNATKIND(V1)
MARK(U11(X1, X2)) → MARK(X1)
MARK(U12(X)) → MARK(X)
MARK(isNatList(X)) → A__ISNATLIST(X)
MARK(U21(X1, X2)) → A__U21(mark(X1), X2)
A__U21(tt, V1) → A__ISNAT(V1)
A__ISNAT(length(V1)) → A__U11(a__isNatIListKind(V1), V1)
A__ISNAT(length(V1)) → A__ISNATILISTKIND(V1)
A__ISNAT(s(V1)) → A__U21(a__isNatKind(V1), V1)
A__ISNAT(s(V1)) → A__ISNATKIND(V1)
MARK(U21(X1, X2)) → MARK(X1)
MARK(U22(X)) → MARK(X)
MARK(isNat(X)) → A__ISNAT(X)
MARK(U31(X1, X2)) → A__U31(mark(X1), X2)
A__U31(tt, V) → A__ISNATLIST(V)
MARK(U31(X1, X2)) → MARK(X1)
MARK(U32(X)) → MARK(X)
MARK(U43(X)) → MARK(X)
MARK(U51(X1, X2, X3)) → A__U51(mark(X1), X2, X3)
A__U51(tt, V1, V2) → A__ISNAT(V1)
MARK(U51(X1, X2, X3)) → MARK(X1)
MARK(U52(X1, X2)) → A__U52(mark(X1), X2)
MARK(U52(X1, X2)) → MARK(X1)
MARK(U53(X)) → MARK(X)
MARK(U61(X1, X2)) → A__U61(mark(X1), X2)
A__U61(tt, L) → A__LENGTH(mark(L))
A__LENGTH(cons(N, L)) → A__U61(a__and(a__and(a__isNatList(L), isNatIListKind(L)), and(isNat(N), isNatKind(N))), L)
A__U61(tt, L) → MARK(L)
MARK(U61(X1, X2)) → MARK(X1)
MARK(length(X)) → A__LENGTH(mark(X))
A__LENGTH(cons(N, L)) → A__AND(a__and(a__isNatList(L), isNatIListKind(L)), and(isNat(N), isNatKind(N)))
A__LENGTH(cons(N, L)) → A__AND(a__isNatList(L), isNatIListKind(L))
A__LENGTH(cons(N, L)) → A__ISNATLIST(L)
MARK(length(X)) → MARK(X)
MARK(and(X1, X2)) → A__AND(mark(X1), X2)
MARK(and(X1, X2)) → MARK(X1)
MARK(isNatIListKind(X)) → A__ISNATILISTKIND(X)
MARK(isNatKind(X)) → A__ISNATKIND(X)
MARK(cons(X1, X2)) → MARK(X1)
MARK(s(X)) → MARK(X)

The TRS R consists of the following rules:

a__zeros → cons(0, zeros)
a__U11(tt, V1) → a__U12(a__isNatList(V1))
a__U12(tt) → tt
a__U21(tt, V1) → a__U22(a__isNat(V1))
a__U22(tt) → tt
a__U31(tt, V) → a__U32(a__isNatList(V))
a__U32(tt) → tt
a__U41(tt, V1, V2) → a__U42(a__isNat(V1), V2)
a__U42(tt, V2) → a__U43(a__isNatIList(V2))
a__U43(tt) → tt
a__U51(tt, V1, V2) → a__U52(a__isNat(V1), V2)
a__U52(tt, V2) → a__U53(a__isNatList(V2))
a__U53(tt) → tt
a__U61(tt, L) → s(a__length(mark(L)))
a__and(tt, X) → mark(X)
a__isNat(0) → tt
a__isNat(length(V1)) → a__U11(a__isNatIListKind(V1), V1)
a__isNat(s(V1)) → a__U21(a__isNatKind(V1), V1)
a__isNatIList(V) → a__U31(a__isNatIListKind(V), V)
a__isNatIList(zeros) → tt
a__isNatIList(cons(V1, V2)) → a__U41(a__and(a__isNatKind(V1), isNatIListKind(V2)), V1, V2)
a__isNatIListKind(nil) → tt
a__isNatIListKind(zeros) → tt
a__isNatIListKind(cons(V1, V2)) → a__and(a__isNatKind(V1), isNatIListKind(V2))
a__isNatKind(0) → tt
a__isNatKind(length(V1)) → a__isNatIListKind(V1)
a__isNatKind(s(V1)) → a__isNatKind(V1)
a__isNatList(nil) → tt
a__isNatList(cons(V1, V2)) → a__U51(a__and(a__isNatKind(V1), isNatIListKind(V2)), V1, V2)
a__length(nil) → 0
a__length(cons(N, L)) → a__U61(a__and(a__and(a__isNatList(L), isNatIListKind(L)), and(isNat(N), isNatKind(N))), L)
mark(zeros) → a__zeros
mark(U11(X1, X2)) → a__U11(mark(X1), X2)
mark(U12(X)) → a__U12(mark(X))
mark(isNatList(X)) → a__isNatList(X)
mark(U21(X1, X2)) → a__U21(mark(X1), X2)
mark(U22(X)) → a__U22(mark(X))
mark(isNat(X)) → a__isNat(X)
mark(U31(X1, X2)) → a__U31(mark(X1), X2)
mark(U32(X)) → a__U32(mark(X))
mark(U41(X1, X2, X3)) → a__U41(mark(X1), X2, X3)
mark(U42(X1, X2)) → a__U42(mark(X1), X2)
mark(U43(X)) → a__U43(mark(X))
mark(isNatIList(X)) → a__isNatIList(X)
mark(U51(X1, X2, X3)) → a__U51(mark(X1), X2, X3)
mark(U52(X1, X2)) → a__U52(mark(X1), X2)
mark(U53(X)) → a__U53(mark(X))
mark(U61(X1, X2)) → a__U61(mark(X1), X2)
mark(length(X)) → a__length(mark(X))
mark(and(X1, X2)) → a__and(mark(X1), X2)
mark(isNatIListKind(X)) → a__isNatIListKind(X)
mark(isNatKind(X)) → a__isNatKind(X)
mark(cons(X1, X2)) → cons(mark(X1), X2)
mark(0) → 0
mark(tt) → tt
mark(s(X)) → s(mark(X))
mark(nil) → nil
a__zeros → zeros
a__U11(X1, X2) → U11(X1, X2)
a__U12(X) → U12(X)
a__isNatList(X) → isNatList(X)
a__U21(X1, X2) → U21(X1, X2)
a__U22(X) → U22(X)
a__isNat(X) → isNat(X)
a__U31(X1, X2) → U31(X1, X2)
a__U32(X) → U32(X)
a__U41(X1, X2, X3) → U41(X1, X2, X3)
a__U42(X1, X2) → U42(X1, X2)
a__U43(X) → U43(X)
a__isNatIList(X) → isNatIList(X)
a__U51(X1, X2, X3) → U51(X1, X2, X3)
a__U52(X1, X2) → U52(X1, X2)
a__U53(X) → U53(X)
a__U61(X1, X2) → U61(X1, X2)
a__length(X) → length(X)
a__and(X1, X2) → and(X1, X2)
a__isNatIListKind(X) → isNatIListKind(X)
a__isNatKind(X) → isNatKind(X)

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

(10) QDPOrderProof (EQUIVALENT transformation)

We use the reduction pair processor [LPAR04].

The following pairs can be oriented strictly and are deleted.

MARK(U31(X1, X2)) → A__U31(mark(X1), X2)
MARK(U31(X1, X2)) → MARK(X1)
MARK(U32(X)) → MARK(X)

The remaining pairs can at least be oriented weakly.
Used ordering: Polynomial interpretation [POLO]:

POL(0) = 0
POL(A__AND(x₁, x₂)) = x₂
POL(A__ISNAT(x₁)) = 0
POL(A__ISNATILISTKIND(x₁)) = 0
POL(A__ISNATKIND(x₁)) = 0
POL(A__ISNATLIST(x₁)) = 0
POL(A__LENGTH(x₁)) = x₁
POL(A__U11(x₁, x₂)) = 0
POL(A__U21(x₁, x₂)) = 0
POL(A__U31(x₁, x₂)) = 0
POL(A__U51(x₁, x₂, x₃)) = 0
POL(A__U52(x₁, x₂)) = 0
POL(A__U61(x₁, x₂)) = x₂
POL(MARK(x₁)) = x₁
POL(U11(x₁, x₂)) = x₁
POL(U12(x₁)) = x₁
POL(U21(x₁, x₂)) = x₁
POL(U22(x₁)) = x₁
POL(U31(x₁, x₂)) = 1 + x₁
POL(U32(x₁)) = 1 + x₁
POL(U41(x₁, x₂, x₃)) = 1 + x₂ + x₃
POL(U42(x₁, x₂)) = 1 + x₁ + x₂
POL(U43(x₁)) = x₁
POL(U51(x₁, x₂, x₃)) = x₁
POL(U52(x₁, x₂)) = x₁
POL(U53(x₁)) = x₁
POL(U61(x₁, x₂)) = x₁ + x₂
POL(a__U11(x₁, x₂)) = x₁
POL(a__U12(x₁)) = x₁
POL(a__U21(x₁, x₂)) = x₁
POL(a__U22(x₁)) = x₁
POL(a__U31(x₁, x₂)) = 1 + x₁
POL(a__U32(x₁)) = 1 + x₁
POL(a__U41(x₁, x₂, x₃)) = 1 + x₂ + x₃
POL(a__U42(x₁, x₂)) = 1 + x₁ + x₂
POL(a__U43(x₁)) = x₁
POL(a__U51(x₁, x₂, x₃)) = x₁
POL(a__U52(x₁, x₂)) = x₁
POL(a__U53(x₁)) = x₁
POL(a__U61(x₁, x₂)) = x₁ + x₂
POL(a__and(x₁, x₂)) = x₁ + x₂
POL(a__isNat(x₁)) = 0
POL(a__isNatIList(x₁)) = 1 + x₁
POL(a__isNatIListKind(x₁)) = 0
POL(a__isNatKind(x₁)) = 0
POL(a__isNatList(x₁)) = 0
POL(a__length(x₁)) = x₁
POL(a__zeros) = 0
POL(and(x₁, x₂)) = x₁ + x₂
POL(cons(x₁, x₂)) = x₁ + x₂
POL(isNat(x₁)) = 0
POL(isNatIList(x₁)) = 1 + x₁
POL(isNatIListKind(x₁)) = 0
POL(isNatKind(x₁)) = 0
POL(isNatList(x₁)) = 0
POL(length(x₁)) = x₁
POL(mark(x₁)) = x₁
POL(nil) = 0
POL(s(x₁)) = x₁
POL(tt) = 0
POL(zeros) = 0

The following usable rules [FROCOS05] were oriented:

mark(s(X)) → s(mark(X))
mark(tt) → tt
mark(0) → 0
mark(cons(X1, X2)) → cons(mark(X1), X2)
a__isNatKind(length(V1)) → a__isNatIListKind(V1)
mark(and(X1, X2)) → a__and(mark(X1), X2)
a__isNatKind(s(V1)) → a__isNatKind(V1)
a__isNatIListKind(cons(V1, V2)) → a__and(a__isNatKind(V1), isNatIListKind(V2))
a__and(tt, X) → mark(X)
mark(isNatIListKind(X)) → a__isNatIListKind(X)
mark(isNatKind(X)) → a__isNatKind(X)
mark(length(X)) → a__length(mark(X))
a__isNat(X) → isNat(X)
a__U22(X) → U22(X)
a__U21(X1, X2) → U21(X1, X2)
a__isNatList(X) → isNatList(X)
a__U12(X) → U12(X)
a__U11(X1, X2) → U11(X1, X2)
a__zeros → zeros
mark(nil) → nil
a__U51(X1, X2, X3) → U51(X1, X2, X3)
a__U52(X1, X2) → U52(X1, X2)
a__U43(X) → U43(X)
a__isNatIList(X) → isNatIList(X)
a__U41(X1, X2, X3) → U41(X1, X2, X3)
a__U42(X1, X2) → U42(X1, X2)
a__U31(X1, X2) → U31(X1, X2)
a__U32(X) → U32(X)
a__isNatIListKind(X) → isNatIListKind(X)
a__isNatKind(X) → isNatKind(X)
a__length(X) → length(X)
a__and(X1, X2) → and(X1, X2)
a__U53(X) → U53(X)
a__U61(X1, X2) → U61(X1, X2)
a__U12(tt) → tt
a__U21(tt, V1) → a__U22(a__isNat(V1))
a__zeros → cons(0, zeros)
a__U11(tt, V1) → a__U12(a__isNatList(V1))
a__U32(tt) → tt
a__U41(tt, V1, V2) → a__U42(a__isNat(V1), V2)
a__U22(tt) → tt
a__U31(tt, V) → a__U32(a__isNatList(V))
a__U51(tt, V1, V2) → a__U52(a__isNat(V1), V2)
a__U52(tt, V2) → a__U53(a__isNatList(V2))
a__U42(tt, V2) → a__U43(a__isNatIList(V2))
a__U43(tt) → tt
a__isNat(0) → tt
a__U53(tt) → tt
a__U61(tt, L) → s(a__length(mark(L)))
a__isNat(s(V1)) → a__U21(a__isNatKind(V1), V1)
a__isNat(length(V1)) → a__U11(a__isNatIListKind(V1), V1)
a__isNatIList(zeros) → tt
a__isNatIList(V) → a__U31(a__isNatIListKind(V), V)
a__isNatIListKind(nil) → tt
a__isNatIList(cons(V1, V2)) → a__U41(a__and(a__isNatKind(V1), isNatIListKind(V2)), V1, V2)
a__isNatIListKind(zeros) → tt
a__isNatKind(0) → tt
a__isNatList(nil) → tt
a__length(nil) → 0
a__isNatList(cons(V1, V2)) → a__U51(a__and(a__isNatKind(V1), isNatIListKind(V2)), V1, V2)
mark(zeros) → a__zeros
a__length(cons(N, L)) → a__U61(a__and(a__and(a__isNatList(L), isNatIListKind(L)), and(isNat(N), isNatKind(N))), L)
mark(U11(X1, X2)) → a__U11(mark(X1), X2)
mark(U12(X)) → a__U12(mark(X))
mark(isNatList(X)) → a__isNatList(X)
mark(U21(X1, X2)) → a__U21(mark(X1), X2)
mark(U22(X)) → a__U22(mark(X))
mark(isNat(X)) → a__isNat(X)
mark(U31(X1, X2)) → a__U31(mark(X1), X2)
mark(U32(X)) → a__U32(mark(X))
mark(U41(X1, X2, X3)) → a__U41(mark(X1), X2, X3)
mark(U42(X1, X2)) → a__U42(mark(X1), X2)
mark(U43(X)) → a__U43(mark(X))
mark(isNatIList(X)) → a__isNatIList(X)
mark(U51(X1, X2, X3)) → a__U51(mark(X1), X2, X3)
mark(U52(X1, X2)) → a__U52(mark(X1), X2)
mark(U53(X)) → a__U53(mark(X))
mark(U61(X1, X2)) → a__U61(mark(X1), X2)

(11) Obligation:

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

A__ISNATLIST(cons(V1, V2)) → A__U51(a__and(a__isNatKind(V1), isNatIListKind(V2)), V1, V2)
A__U51(tt, V1, V2) → A__U52(a__isNat(V1), V2)
A__U52(tt, V2) → A__ISNATLIST(V2)
A__ISNATLIST(cons(V1, V2)) → A__AND(a__isNatKind(V1), isNatIListKind(V2))
A__AND(tt, X) → MARK(X)
MARK(U11(X1, X2)) → A__U11(mark(X1), X2)
A__U11(tt, V1) → A__ISNATLIST(V1)
A__ISNATLIST(cons(V1, V2)) → A__ISNATKIND(V1)
A__ISNATKIND(length(V1)) → A__ISNATILISTKIND(V1)
A__ISNATILISTKIND(cons(V1, V2)) → A__AND(a__isNatKind(V1), isNatIListKind(V2))
A__ISNATILISTKIND(cons(V1, V2)) → A__ISNATKIND(V1)
A__ISNATKIND(s(V1)) → A__ISNATKIND(V1)
MARK(U11(X1, X2)) → MARK(X1)
MARK(U12(X)) → MARK(X)
MARK(isNatList(X)) → A__ISNATLIST(X)
MARK(U21(X1, X2)) → A__U21(mark(X1), X2)
A__U21(tt, V1) → A__ISNAT(V1)
A__ISNAT(length(V1)) → A__U11(a__isNatIListKind(V1), V1)
A__ISNAT(length(V1)) → A__ISNATILISTKIND(V1)
A__ISNAT(s(V1)) → A__U21(a__isNatKind(V1), V1)
A__ISNAT(s(V1)) → A__ISNATKIND(V1)
MARK(U21(X1, X2)) → MARK(X1)
MARK(U22(X)) → MARK(X)
MARK(isNat(X)) → A__ISNAT(X)
A__U31(tt, V) → A__ISNATLIST(V)
MARK(U43(X)) → MARK(X)
MARK(U51(X1, X2, X3)) → A__U51(mark(X1), X2, X3)
A__U51(tt, V1, V2) → A__ISNAT(V1)
MARK(U51(X1, X2, X3)) → MARK(X1)
MARK(U52(X1, X2)) → A__U52(mark(X1), X2)
MARK(U52(X1, X2)) → MARK(X1)
MARK(U53(X)) → MARK(X)
MARK(U61(X1, X2)) → A__U61(mark(X1), X2)
A__U61(tt, L) → A__LENGTH(mark(L))
A__LENGTH(cons(N, L)) → A__U61(a__and(a__and(a__isNatList(L), isNatIListKind(L)), and(isNat(N), isNatKind(N))), L)
A__U61(tt, L) → MARK(L)
MARK(U61(X1, X2)) → MARK(X1)
MARK(length(X)) → A__LENGTH(mark(X))
A__LENGTH(cons(N, L)) → A__AND(a__and(a__isNatList(L), isNatIListKind(L)), and(isNat(N), isNatKind(N)))
A__LENGTH(cons(N, L)) → A__AND(a__isNatList(L), isNatIListKind(L))
A__LENGTH(cons(N, L)) → A__ISNATLIST(L)
MARK(length(X)) → MARK(X)
MARK(and(X1, X2)) → A__AND(mark(X1), X2)
MARK(and(X1, X2)) → MARK(X1)
MARK(isNatIListKind(X)) → A__ISNATILISTKIND(X)
MARK(isNatKind(X)) → A__ISNATKIND(X)
MARK(cons(X1, X2)) → MARK(X1)
MARK(s(X)) → MARK(X)

The TRS R consists of the following rules:

a__zeros → cons(0, zeros)
a__U11(tt, V1) → a__U12(a__isNatList(V1))
a__U12(tt) → tt
a__U21(tt, V1) → a__U22(a__isNat(V1))
a__U22(tt) → tt
a__U31(tt, V) → a__U32(a__isNatList(V))
a__U32(tt) → tt
a__U41(tt, V1, V2) → a__U42(a__isNat(V1), V2)
a__U42(tt, V2) → a__U43(a__isNatIList(V2))
a__U43(tt) → tt
a__U51(tt, V1, V2) → a__U52(a__isNat(V1), V2)
a__U52(tt, V2) → a__U53(a__isNatList(V2))
a__U53(tt) → tt
a__U61(tt, L) → s(a__length(mark(L)))
a__and(tt, X) → mark(X)
a__isNat(0) → tt
a__isNat(length(V1)) → a__U11(a__isNatIListKind(V1), V1)
a__isNat(s(V1)) → a__U21(a__isNatKind(V1), V1)
a__isNatIList(V) → a__U31(a__isNatIListKind(V), V)
a__isNatIList(zeros) → tt
a__isNatIList(cons(V1, V2)) → a__U41(a__and(a__isNatKind(V1), isNatIListKind(V2)), V1, V2)
a__isNatIListKind(nil) → tt
a__isNatIListKind(zeros) → tt
a__isNatIListKind(cons(V1, V2)) → a__and(a__isNatKind(V1), isNatIListKind(V2))
a__isNatKind(0) → tt
a__isNatKind(length(V1)) → a__isNatIListKind(V1)
a__isNatKind(s(V1)) → a__isNatKind(V1)
a__isNatList(nil) → tt
a__isNatList(cons(V1, V2)) → a__U51(a__and(a__isNatKind(V1), isNatIListKind(V2)), V1, V2)
a__length(nil) → 0
a__length(cons(N, L)) → a__U61(a__and(a__and(a__isNatList(L), isNatIListKind(L)), and(isNat(N), isNatKind(N))), L)
mark(zeros) → a__zeros
mark(U11(X1, X2)) → a__U11(mark(X1), X2)
mark(U12(X)) → a__U12(mark(X))
mark(isNatList(X)) → a__isNatList(X)
mark(U21(X1, X2)) → a__U21(mark(X1), X2)
mark(U22(X)) → a__U22(mark(X))
mark(isNat(X)) → a__isNat(X)
mark(U31(X1, X2)) → a__U31(mark(X1), X2)
mark(U32(X)) → a__U32(mark(X))
mark(U41(X1, X2, X3)) → a__U41(mark(X1), X2, X3)
mark(U42(X1, X2)) → a__U42(mark(X1), X2)
mark(U43(X)) → a__U43(mark(X))
mark(isNatIList(X)) → a__isNatIList(X)
mark(U51(X1, X2, X3)) → a__U51(mark(X1), X2, X3)
mark(U52(X1, X2)) → a__U52(mark(X1), X2)
mark(U53(X)) → a__U53(mark(X))
mark(U61(X1, X2)) → a__U61(mark(X1), X2)
mark(length(X)) → a__length(mark(X))
mark(and(X1, X2)) → a__and(mark(X1), X2)
mark(isNatIListKind(X)) → a__isNatIListKind(X)
mark(isNatKind(X)) → a__isNatKind(X)
mark(cons(X1, X2)) → cons(mark(X1), X2)
mark(0) → 0
mark(tt) → tt
mark(s(X)) → s(mark(X))
mark(nil) → nil
a__zeros → zeros
a__U11(X1, X2) → U11(X1, X2)
a__U12(X) → U12(X)
a__isNatList(X) → isNatList(X)
a__U21(X1, X2) → U21(X1, X2)
a__U22(X) → U22(X)
a__isNat(X) → isNat(X)
a__U31(X1, X2) → U31(X1, X2)
a__U32(X) → U32(X)
a__U41(X1, X2, X3) → U41(X1, X2, X3)
a__U42(X1, X2) → U42(X1, X2)
a__U43(X) → U43(X)
a__isNatIList(X) → isNatIList(X)
a__U51(X1, X2, X3) → U51(X1, X2, X3)
a__U52(X1, X2) → U52(X1, X2)
a__U53(X) → U53(X)
a__U61(X1, X2) → U61(X1, X2)
a__length(X) → length(X)
a__and(X1, X2) → and(X1, X2)
a__isNatIListKind(X) → isNatIListKind(X)
a__isNatKind(X) → isNatKind(X)

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

(12) DependencyGraphProof (EQUIVALENT transformation)

The approximation of the Dependency Graph [LPAR04,FROCOS05,EDGSTAR] contains 1 SCC with 1 less node.

(13) Obligation:

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

A__U51(tt, V1, V2) → A__U52(a__isNat(V1), V2)
A__U52(tt, V2) → A__ISNATLIST(V2)
A__ISNATLIST(cons(V1, V2)) → A__U51(a__and(a__isNatKind(V1), isNatIListKind(V2)), V1, V2)
A__U51(tt, V1, V2) → A__ISNAT(V1)
A__ISNAT(length(V1)) → A__U11(a__isNatIListKind(V1), V1)
A__U11(tt, V1) → A__ISNATLIST(V1)
A__ISNATLIST(cons(V1, V2)) → A__AND(a__isNatKind(V1), isNatIListKind(V2))
A__AND(tt, X) → MARK(X)
MARK(U11(X1, X2)) → A__U11(mark(X1), X2)
MARK(U11(X1, X2)) → MARK(X1)
MARK(U12(X)) → MARK(X)
MARK(isNatList(X)) → A__ISNATLIST(X)
A__ISNATLIST(cons(V1, V2)) → A__ISNATKIND(V1)
A__ISNATKIND(length(V1)) → A__ISNATILISTKIND(V1)
A__ISNATILISTKIND(cons(V1, V2)) → A__AND(a__isNatKind(V1), isNatIListKind(V2))
A__ISNATILISTKIND(cons(V1, V2)) → A__ISNATKIND(V1)
A__ISNATKIND(s(V1)) → A__ISNATKIND(V1)
MARK(U21(X1, X2)) → A__U21(mark(X1), X2)
A__U21(tt, V1) → A__ISNAT(V1)
A__ISNAT(length(V1)) → A__ISNATILISTKIND(V1)
A__ISNAT(s(V1)) → A__U21(a__isNatKind(V1), V1)
A__ISNAT(s(V1)) → A__ISNATKIND(V1)
MARK(U21(X1, X2)) → MARK(X1)
MARK(U22(X)) → MARK(X)
MARK(isNat(X)) → A__ISNAT(X)
MARK(U43(X)) → MARK(X)
MARK(U51(X1, X2, X3)) → A__U51(mark(X1), X2, X3)
MARK(U51(X1, X2, X3)) → MARK(X1)
MARK(U52(X1, X2)) → A__U52(mark(X1), X2)
MARK(U52(X1, X2)) → MARK(X1)
MARK(U53(X)) → MARK(X)
MARK(U61(X1, X2)) → A__U61(mark(X1), X2)
A__U61(tt, L) → A__LENGTH(mark(L))
A__LENGTH(cons(N, L)) → A__U61(a__and(a__and(a__isNatList(L), isNatIListKind(L)), and(isNat(N), isNatKind(N))), L)
A__U61(tt, L) → MARK(L)
MARK(U61(X1, X2)) → MARK(X1)
MARK(length(X)) → A__LENGTH(mark(X))
A__LENGTH(cons(N, L)) → A__AND(a__and(a__isNatList(L), isNatIListKind(L)), and(isNat(N), isNatKind(N)))
A__LENGTH(cons(N, L)) → A__AND(a__isNatList(L), isNatIListKind(L))
A__LENGTH(cons(N, L)) → A__ISNATLIST(L)
MARK(length(X)) → MARK(X)
MARK(and(X1, X2)) → A__AND(mark(X1), X2)
MARK(and(X1, X2)) → MARK(X1)
MARK(isNatIListKind(X)) → A__ISNATILISTKIND(X)
MARK(isNatKind(X)) → A__ISNATKIND(X)
MARK(cons(X1, X2)) → MARK(X1)
MARK(s(X)) → MARK(X)

The TRS R consists of the following rules:

a__zeros → cons(0, zeros)
a__U11(tt, V1) → a__U12(a__isNatList(V1))
a__U12(tt) → tt
a__U21(tt, V1) → a__U22(a__isNat(V1))
a__U22(tt) → tt
a__U31(tt, V) → a__U32(a__isNatList(V))
a__U32(tt) → tt
a__U41(tt, V1, V2) → a__U42(a__isNat(V1), V2)
a__U42(tt, V2) → a__U43(a__isNatIList(V2))
a__U43(tt) → tt
a__U51(tt, V1, V2) → a__U52(a__isNat(V1), V2)
a__U52(tt, V2) → a__U53(a__isNatList(V2))
a__U53(tt) → tt
a__U61(tt, L) → s(a__length(mark(L)))
a__and(tt, X) → mark(X)
a__isNat(0) → tt
a__isNat(length(V1)) → a__U11(a__isNatIListKind(V1), V1)
a__isNat(s(V1)) → a__U21(a__isNatKind(V1), V1)
a__isNatIList(V) → a__U31(a__isNatIListKind(V), V)
a__isNatIList(zeros) → tt
a__isNatIList(cons(V1, V2)) → a__U41(a__and(a__isNatKind(V1), isNatIListKind(V2)), V1, V2)
a__isNatIListKind(nil) → tt
a__isNatIListKind(zeros) → tt
a__isNatIListKind(cons(V1, V2)) → a__and(a__isNatKind(V1), isNatIListKind(V2))
a__isNatKind(0) → tt
a__isNatKind(length(V1)) → a__isNatIListKind(V1)
a__isNatKind(s(V1)) → a__isNatKind(V1)
a__isNatList(nil) → tt
a__isNatList(cons(V1, V2)) → a__U51(a__and(a__isNatKind(V1), isNatIListKind(V2)), V1, V2)
a__length(nil) → 0
a__length(cons(N, L)) → a__U61(a__and(a__and(a__isNatList(L), isNatIListKind(L)), and(isNat(N), isNatKind(N))), L)
mark(zeros) → a__zeros
mark(U11(X1, X2)) → a__U11(mark(X1), X2)
mark(U12(X)) → a__U12(mark(X))
mark(isNatList(X)) → a__isNatList(X)
mark(U21(X1, X2)) → a__U21(mark(X1), X2)
mark(U22(X)) → a__U22(mark(X))
mark(isNat(X)) → a__isNat(X)
mark(U31(X1, X2)) → a__U31(mark(X1), X2)
mark(U32(X)) → a__U32(mark(X))
mark(U41(X1, X2, X3)) → a__U41(mark(X1), X2, X3)
mark(U42(X1, X2)) → a__U42(mark(X1), X2)
mark(U43(X)) → a__U43(mark(X))
mark(isNatIList(X)) → a__isNatIList(X)
mark(U51(X1, X2, X3)) → a__U51(mark(X1), X2, X3)
mark(U52(X1, X2)) → a__U52(mark(X1), X2)
mark(U53(X)) → a__U53(mark(X))
mark(U61(X1, X2)) → a__U61(mark(X1), X2)
mark(length(X)) → a__length(mark(X))
mark(and(X1, X2)) → a__and(mark(X1), X2)
mark(isNatIListKind(X)) → a__isNatIListKind(X)
mark(isNatKind(X)) → a__isNatKind(X)
mark(cons(X1, X2)) → cons(mark(X1), X2)
mark(0) → 0
mark(tt) → tt
mark(s(X)) → s(mark(X))
mark(nil) → nil
a__zeros → zeros
a__U11(X1, X2) → U11(X1, X2)
a__U12(X) → U12(X)
a__isNatList(X) → isNatList(X)
a__U21(X1, X2) → U21(X1, X2)
a__U22(X) → U22(X)
a__isNat(X) → isNat(X)
a__U31(X1, X2) → U31(X1, X2)
a__U32(X) → U32(X)
a__U41(X1, X2, X3) → U41(X1, X2, X3)
a__U42(X1, X2) → U42(X1, X2)
a__U43(X) → U43(X)
a__isNatIList(X) → isNatIList(X)
a__U51(X1, X2, X3) → U51(X1, X2, X3)
a__U52(X1, X2) → U52(X1, X2)
a__U53(X) → U53(X)
a__U61(X1, X2) → U61(X1, X2)
a__length(X) → length(X)
a__and(X1, X2) → and(X1, X2)
a__isNatIListKind(X) → isNatIListKind(X)
a__isNatKind(X) → isNatKind(X)

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

(14) QDPOrderProof (EQUIVALENT transformation)

We use the reduction pair processor [LPAR04].

The following pairs can be oriented strictly and are deleted.

MARK(U61(X1, X2)) → A__U61(mark(X1), X2)
MARK(U61(X1, X2)) → MARK(X1)
MARK(length(X)) → A__LENGTH(mark(X))
MARK(length(X)) → MARK(X)

The remaining pairs can at least be oriented weakly.
Used ordering: Polynomial interpretation [POLO]:

POL(0) = 0
POL(A__AND(x₁, x₂)) = x₂
POL(A__ISNAT(x₁)) = 0
POL(A__ISNATILISTKIND(x₁)) = 0
POL(A__ISNATKIND(x₁)) = 0
POL(A__ISNATLIST(x₁)) = 0
POL(A__LENGTH(x₁)) = x₁
POL(A__U11(x₁, x₂)) = 0
POL(A__U21(x₁, x₂)) = 0
POL(A__U51(x₁, x₂, x₃)) = 0
POL(A__U52(x₁, x₂)) = 0
POL(A__U61(x₁, x₂)) = x₂
POL(MARK(x₁)) = x₁
POL(U11(x₁, x₂)) = x₁
POL(U12(x₁)) = x₁
POL(U21(x₁, x₂)) = x₁
POL(U22(x₁)) = x₁
POL(U31(x₁, x₂)) = x₁
POL(U32(x₁)) = 0
POL(U41(x₁, x₂, x₃)) = 0
POL(U42(x₁, x₂)) = x₁
POL(U43(x₁)) = x₁
POL(U51(x₁, x₂, x₃)) = x₁
POL(U52(x₁, x₂)) = x₁
POL(U53(x₁)) = x₁
POL(U61(x₁, x₂)) = 1 + x₁ + x₂
POL(a__U11(x₁, x₂)) = x₁
POL(a__U12(x₁)) = x₁
POL(a__U21(x₁, x₂)) = x₁
POL(a__U22(x₁)) = x₁
POL(a__U31(x₁, x₂)) = x₁
POL(a__U32(x₁)) = 0
POL(a__U41(x₁, x₂, x₃)) = 0
POL(a__U42(x₁, x₂)) = x₁
POL(a__U43(x₁)) = x₁
POL(a__U51(x₁, x₂, x₃)) = x₁
POL(a__U52(x₁, x₂)) = x₁
POL(a__U53(x₁)) = x₁
POL(a__U61(x₁, x₂)) = 1 + x₁ + x₂
POL(a__and(x₁, x₂)) = x₁ + x₂
POL(a__isNat(x₁)) = 0
POL(a__isNatIList(x₁)) = 0
POL(a__isNatIListKind(x₁)) = 0
POL(a__isNatKind(x₁)) = 0
POL(a__isNatList(x₁)) = 0
POL(a__length(x₁)) = 1 + x₁
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(isNatIListKind(x₁)) = 0
POL(isNatKind(x₁)) = 0
POL(isNatList(x₁)) = 0
POL(length(x₁)) = 1 + x₁
POL(mark(x₁)) = x₁
POL(nil) = 0
POL(s(x₁)) = x₁
POL(tt) = 0
POL(zeros) = 0

The following usable rules [FROCOS05] were oriented:

mark(s(X)) → s(mark(X))
mark(tt) → tt
mark(0) → 0
mark(cons(X1, X2)) → cons(mark(X1), X2)
a__isNatKind(length(V1)) → a__isNatIListKind(V1)
mark(and(X1, X2)) → a__and(mark(X1), X2)
a__isNatKind(s(V1)) → a__isNatKind(V1)
a__isNatIListKind(cons(V1, V2)) → a__and(a__isNatKind(V1), isNatIListKind(V2))
a__and(tt, X) → mark(X)
mark(isNatIListKind(X)) → a__isNatIListKind(X)
mark(isNatKind(X)) → a__isNatKind(X)
mark(length(X)) → a__length(mark(X))
a__isNat(X) → isNat(X)
a__U22(X) → U22(X)
a__U21(X1, X2) → U21(X1, X2)
a__isNatList(X) → isNatList(X)
a__U12(X) → U12(X)
a__U11(X1, X2) → U11(X1, X2)
a__zeros → zeros
mark(nil) → nil
a__U51(X1, X2, X3) → U51(X1, X2, X3)
a__U52(X1, X2) → U52(X1, X2)
a__U43(X) → U43(X)
a__isNatIList(X) → isNatIList(X)
a__U41(X1, X2, X3) → U41(X1, X2, X3)
a__U42(X1, X2) → U42(X1, X2)
a__U31(X1, X2) → U31(X1, X2)
a__U32(X) → U32(X)
a__isNatIListKind(X) → isNatIListKind(X)
a__isNatKind(X) → isNatKind(X)
a__length(X) → length(X)
a__and(X1, X2) → and(X1, X2)
a__U53(X) → U53(X)
a__U61(X1, X2) → U61(X1, X2)
a__U12(tt) → tt
a__U21(tt, V1) → a__U22(a__isNat(V1))
a__zeros → cons(0, zeros)
a__U11(tt, V1) → a__U12(a__isNatList(V1))
a__U32(tt) → tt
a__U41(tt, V1, V2) → a__U42(a__isNat(V1), V2)
a__U22(tt) → tt
a__U31(tt, V) → a__U32(a__isNatList(V))
a__U51(tt, V1, V2) → a__U52(a__isNat(V1), V2)
a__U52(tt, V2) → a__U53(a__isNatList(V2))
a__U42(tt, V2) → a__U43(a__isNatIList(V2))
a__U43(tt) → tt
a__isNat(0) → tt
a__U53(tt) → tt
a__U61(tt, L) → s(a__length(mark(L)))
a__isNat(s(V1)) → a__U21(a__isNatKind(V1), V1)
a__isNat(length(V1)) → a__U11(a__isNatIListKind(V1), V1)
a__isNatIList(zeros) → tt
a__isNatIList(V) → a__U31(a__isNatIListKind(V), V)
a__isNatIListKind(nil) → tt
a__isNatIList(cons(V1, V2)) → a__U41(a__and(a__isNatKind(V1), isNatIListKind(V2)), V1, V2)
a__isNatIListKind(zeros) → tt
a__isNatKind(0) → tt
a__isNatList(nil) → tt
a__length(nil) → 0
a__isNatList(cons(V1, V2)) → a__U51(a__and(a__isNatKind(V1), isNatIListKind(V2)), V1, V2)
mark(zeros) → a__zeros
a__length(cons(N, L)) → a__U61(a__and(a__and(a__isNatList(L), isNatIListKind(L)), and(isNat(N), isNatKind(N))), L)
mark(U11(X1, X2)) → a__U11(mark(X1), X2)
mark(U12(X)) → a__U12(mark(X))
mark(isNatList(X)) → a__isNatList(X)
mark(U21(X1, X2)) → a__U21(mark(X1), X2)
mark(U22(X)) → a__U22(mark(X))
mark(isNat(X)) → a__isNat(X)
mark(U31(X1, X2)) → a__U31(mark(X1), X2)
mark(U32(X)) → a__U32(mark(X))
mark(U41(X1, X2, X3)) → a__U41(mark(X1), X2, X3)
mark(U42(X1, X2)) → a__U42(mark(X1), X2)
mark(U43(X)) → a__U43(mark(X))
mark(isNatIList(X)) → a__isNatIList(X)
mark(U51(X1, X2, X3)) → a__U51(mark(X1), X2, X3)
mark(U52(X1, X2)) → a__U52(mark(X1), X2)
mark(U53(X)) → a__U53(mark(X))
mark(U61(X1, X2)) → a__U61(mark(X1), X2)

(15) Obligation:

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

A__U51(tt, V1, V2) → A__U52(a__isNat(V1), V2)
A__U52(tt, V2) → A__ISNATLIST(V2)
A__ISNATLIST(cons(V1, V2)) → A__U51(a__and(a__isNatKind(V1), isNatIListKind(V2)), V1, V2)
A__U51(tt, V1, V2) → A__ISNAT(V1)
A__ISNAT(length(V1)) → A__U11(a__isNatIListKind(V1), V1)
A__U11(tt, V1) → A__ISNATLIST(V1)
A__ISNATLIST(cons(V1, V2)) → A__AND(a__isNatKind(V1), isNatIListKind(V2))
A__AND(tt, X) → MARK(X)
MARK(U11(X1, X2)) → A__U11(mark(X1), X2)
MARK(U11(X1, X2)) → MARK(X1)
MARK(U12(X)) → MARK(X)
MARK(isNatList(X)) → A__ISNATLIST(X)
A__ISNATLIST(cons(V1, V2)) → A__ISNATKIND(V1)
A__ISNATKIND(length(V1)) → A__ISNATILISTKIND(V1)
A__ISNATILISTKIND(cons(V1, V2)) → A__AND(a__isNatKind(V1), isNatIListKind(V2))
A__ISNATILISTKIND(cons(V1, V2)) → A__ISNATKIND(V1)
A__ISNATKIND(s(V1)) → A__ISNATKIND(V1)
MARK(U21(X1, X2)) → A__U21(mark(X1), X2)
A__U21(tt, V1) → A__ISNAT(V1)
A__ISNAT(length(V1)) → A__ISNATILISTKIND(V1)
A__ISNAT(s(V1)) → A__U21(a__isNatKind(V1), V1)
A__ISNAT(s(V1)) → A__ISNATKIND(V1)
MARK(U21(X1, X2)) → MARK(X1)
MARK(U22(X)) → MARK(X)
MARK(isNat(X)) → A__ISNAT(X)
MARK(U43(X)) → MARK(X)
MARK(U51(X1, X2, X3)) → A__U51(mark(X1), X2, X3)
MARK(U51(X1, X2, X3)) → MARK(X1)
MARK(U52(X1, X2)) → A__U52(mark(X1), X2)
MARK(U52(X1, X2)) → MARK(X1)
MARK(U53(X)) → MARK(X)
A__U61(tt, L) → A__LENGTH(mark(L))
A__LENGTH(cons(N, L)) → A__U61(a__and(a__and(a__isNatList(L), isNatIListKind(L)), and(isNat(N), isNatKind(N))), L)
A__U61(tt, L) → MARK(L)
A__LENGTH(cons(N, L)) → A__AND(a__and(a__isNatList(L), isNatIListKind(L)), and(isNat(N), isNatKind(N)))
A__LENGTH(cons(N, L)) → A__AND(a__isNatList(L), isNatIListKind(L))
A__LENGTH(cons(N, L)) → A__ISNATLIST(L)
MARK(and(X1, X2)) → A__AND(mark(X1), X2)
MARK(and(X1, X2)) → MARK(X1)
MARK(isNatIListKind(X)) → A__ISNATILISTKIND(X)
MARK(isNatKind(X)) → A__ISNATKIND(X)
MARK(cons(X1, X2)) → MARK(X1)
MARK(s(X)) → MARK(X)

The TRS R consists of the following rules:

a__zeros → cons(0, zeros)
a__U11(tt, V1) → a__U12(a__isNatList(V1))
a__U12(tt) → tt
a__U21(tt, V1) → a__U22(a__isNat(V1))
a__U22(tt) → tt
a__U31(tt, V) → a__U32(a__isNatList(V))
a__U32(tt) → tt
a__U41(tt, V1, V2) → a__U42(a__isNat(V1), V2)
a__U42(tt, V2) → a__U43(a__isNatIList(V2))
a__U43(tt) → tt
a__U51(tt, V1, V2) → a__U52(a__isNat(V1), V2)
a__U52(tt, V2) → a__U53(a__isNatList(V2))
a__U53(tt) → tt
a__U61(tt, L) → s(a__length(mark(L)))
a__and(tt, X) → mark(X)
a__isNat(0) → tt
a__isNat(length(V1)) → a__U11(a__isNatIListKind(V1), V1)
a__isNat(s(V1)) → a__U21(a__isNatKind(V1), V1)
a__isNatIList(V) → a__U31(a__isNatIListKind(V), V)
a__isNatIList(zeros) → tt
a__isNatIList(cons(V1, V2)) → a__U41(a__and(a__isNatKind(V1), isNatIListKind(V2)), V1, V2)
a__isNatIListKind(nil) → tt
a__isNatIListKind(zeros) → tt
a__isNatIListKind(cons(V1, V2)) → a__and(a__isNatKind(V1), isNatIListKind(V2))
a__isNatKind(0) → tt
a__isNatKind(length(V1)) → a__isNatIListKind(V1)
a__isNatKind(s(V1)) → a__isNatKind(V1)
a__isNatList(nil) → tt
a__isNatList(cons(V1, V2)) → a__U51(a__and(a__isNatKind(V1), isNatIListKind(V2)), V1, V2)
a__length(nil) → 0
a__length(cons(N, L)) → a__U61(a__and(a__and(a__isNatList(L), isNatIListKind(L)), and(isNat(N), isNatKind(N))), L)
mark(zeros) → a__zeros
mark(U11(X1, X2)) → a__U11(mark(X1), X2)
mark(U12(X)) → a__U12(mark(X))
mark(isNatList(X)) → a__isNatList(X)
mark(U21(X1, X2)) → a__U21(mark(X1), X2)
mark(U22(X)) → a__U22(mark(X))
mark(isNat(X)) → a__isNat(X)
mark(U31(X1, X2)) → a__U31(mark(X1), X2)
mark(U32(X)) → a__U32(mark(X))
mark(U41(X1, X2, X3)) → a__U41(mark(X1), X2, X3)
mark(U42(X1, X2)) → a__U42(mark(X1), X2)
mark(U43(X)) → a__U43(mark(X))
mark(isNatIList(X)) → a__isNatIList(X)
mark(U51(X1, X2, X3)) → a__U51(mark(X1), X2, X3)
mark(U52(X1, X2)) → a__U52(mark(X1), X2)
mark(U53(X)) → a__U53(mark(X))
mark(U61(X1, X2)) → a__U61(mark(X1), X2)
mark(length(X)) → a__length(mark(X))
mark(and(X1, X2)) → a__and(mark(X1), X2)
mark(isNatIListKind(X)) → a__isNatIListKind(X)
mark(isNatKind(X)) → a__isNatKind(X)
mark(cons(X1, X2)) → cons(mark(X1), X2)
mark(0) → 0
mark(tt) → tt
mark(s(X)) → s(mark(X))
mark(nil) → nil
a__zeros → zeros
a__U11(X1, X2) → U11(X1, X2)
a__U12(X) → U12(X)
a__isNatList(X) → isNatList(X)
a__U21(X1, X2) → U21(X1, X2)
a__U22(X) → U22(X)
a__isNat(X) → isNat(X)
a__U31(X1, X2) → U31(X1, X2)
a__U32(X) → U32(X)
a__U41(X1, X2, X3) → U41(X1, X2, X3)
a__U42(X1, X2) → U42(X1, X2)
a__U43(X) → U43(X)
a__isNatIList(X) → isNatIList(X)
a__U51(X1, X2, X3) → U51(X1, X2, X3)
a__U52(X1, X2) → U52(X1, X2)
a__U53(X) → U53(X)
a__U61(X1, X2) → U61(X1, X2)
a__length(X) → length(X)
a__and(X1, X2) → and(X1, X2)
a__isNatIListKind(X) → isNatIListKind(X)
a__isNatKind(X) → isNatKind(X)

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

(16) DependencyGraphProof (EQUIVALENT transformation)

The approximation of the Dependency Graph [LPAR04,FROCOS05,EDGSTAR] contains 2 SCCs with 4 less nodes.

(17) Complex Obligation (AND)

(18) Obligation:

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

A__U52(tt, V2) → A__ISNATLIST(V2)
A__ISNATLIST(cons(V1, V2)) → A__U51(a__and(a__isNatKind(V1), isNatIListKind(V2)), V1, V2)
A__U51(tt, V1, V2) → A__U52(a__isNat(V1), V2)
A__U51(tt, V1, V2) → A__ISNAT(V1)
A__ISNAT(length(V1)) → A__U11(a__isNatIListKind(V1), V1)
A__U11(tt, V1) → A__ISNATLIST(V1)
A__ISNATLIST(cons(V1, V2)) → A__AND(a__isNatKind(V1), isNatIListKind(V2))
A__AND(tt, X) → MARK(X)
MARK(U11(X1, X2)) → A__U11(mark(X1), X2)
MARK(U11(X1, X2)) → MARK(X1)
MARK(U12(X)) → MARK(X)
MARK(isNatList(X)) → A__ISNATLIST(X)
A__ISNATLIST(cons(V1, V2)) → A__ISNATKIND(V1)
A__ISNATKIND(length(V1)) → A__ISNATILISTKIND(V1)
A__ISNATILISTKIND(cons(V1, V2)) → A__AND(a__isNatKind(V1), isNatIListKind(V2))
A__ISNATILISTKIND(cons(V1, V2)) → A__ISNATKIND(V1)
A__ISNATKIND(s(V1)) → A__ISNATKIND(V1)
MARK(U21(X1, X2)) → A__U21(mark(X1), X2)
A__U21(tt, V1) → A__ISNAT(V1)
A__ISNAT(length(V1)) → A__ISNATILISTKIND(V1)
A__ISNAT(s(V1)) → A__U21(a__isNatKind(V1), V1)
A__ISNAT(s(V1)) → A__ISNATKIND(V1)
MARK(U21(X1, X2)) → MARK(X1)
MARK(U22(X)) → MARK(X)
MARK(isNat(X)) → A__ISNAT(X)
MARK(U43(X)) → MARK(X)
MARK(U51(X1, X2, X3)) → A__U51(mark(X1), X2, X3)
MARK(U51(X1, X2, X3)) → MARK(X1)
MARK(U52(X1, X2)) → A__U52(mark(X1), X2)
MARK(U52(X1, X2)) → MARK(X1)
MARK(U53(X)) → MARK(X)
MARK(and(X1, X2)) → A__AND(mark(X1), X2)
MARK(and(X1, X2)) → MARK(X1)
MARK(isNatIListKind(X)) → A__ISNATILISTKIND(X)
MARK(isNatKind(X)) → A__ISNATKIND(X)
MARK(cons(X1, X2)) → MARK(X1)
MARK(s(X)) → MARK(X)

The TRS R consists of the following rules:

a__zeros → cons(0, zeros)
a__U11(tt, V1) → a__U12(a__isNatList(V1))
a__U12(tt) → tt
a__U21(tt, V1) → a__U22(a__isNat(V1))
a__U22(tt) → tt
a__U31(tt, V) → a__U32(a__isNatList(V))
a__U32(tt) → tt
a__U41(tt, V1, V2) → a__U42(a__isNat(V1), V2)
a__U42(tt, V2) → a__U43(a__isNatIList(V2))
a__U43(tt) → tt
a__U51(tt, V1, V2) → a__U52(a__isNat(V1), V2)
a__U52(tt, V2) → a__U53(a__isNatList(V2))
a__U53(tt) → tt
a__U61(tt, L) → s(a__length(mark(L)))
a__and(tt, X) → mark(X)
a__isNat(0) → tt
a__isNat(length(V1)) → a__U11(a__isNatIListKind(V1), V1)
a__isNat(s(V1)) → a__U21(a__isNatKind(V1), V1)
a__isNatIList(V) → a__U31(a__isNatIListKind(V), V)
a__isNatIList(zeros) → tt
a__isNatIList(cons(V1, V2)) → a__U41(a__and(a__isNatKind(V1), isNatIListKind(V2)), V1, V2)
a__isNatIListKind(nil) → tt
a__isNatIListKind(zeros) → tt
a__isNatIListKind(cons(V1, V2)) → a__and(a__isNatKind(V1), isNatIListKind(V2))
a__isNatKind(0) → tt
a__isNatKind(length(V1)) → a__isNatIListKind(V1)
a__isNatKind(s(V1)) → a__isNatKind(V1)
a__isNatList(nil) → tt
a__isNatList(cons(V1, V2)) → a__U51(a__and(a__isNatKind(V1), isNatIListKind(V2)), V1, V2)
a__length(nil) → 0
a__length(cons(N, L)) → a__U61(a__and(a__and(a__isNatList(L), isNatIListKind(L)), and(isNat(N), isNatKind(N))), L)
mark(zeros) → a__zeros
mark(U11(X1, X2)) → a__U11(mark(X1), X2)
mark(U12(X)) → a__U12(mark(X))
mark(isNatList(X)) → a__isNatList(X)
mark(U21(X1, X2)) → a__U21(mark(X1), X2)
mark(U22(X)) → a__U22(mark(X))
mark(isNat(X)) → a__isNat(X)
mark(U31(X1, X2)) → a__U31(mark(X1), X2)
mark(U32(X)) → a__U32(mark(X))
mark(U41(X1, X2, X3)) → a__U41(mark(X1), X2, X3)
mark(U42(X1, X2)) → a__U42(mark(X1), X2)
mark(U43(X)) → a__U43(mark(X))
mark(isNatIList(X)) → a__isNatIList(X)
mark(U51(X1, X2, X3)) → a__U51(mark(X1), X2, X3)
mark(U52(X1, X2)) → a__U52(mark(X1), X2)
mark(U53(X)) → a__U53(mark(X))
mark(U61(X1, X2)) → a__U61(mark(X1), X2)
mark(length(X)) → a__length(mark(X))
mark(and(X1, X2)) → a__and(mark(X1), X2)
mark(isNatIListKind(X)) → a__isNatIListKind(X)
mark(isNatKind(X)) → a__isNatKind(X)
mark(cons(X1, X2)) → cons(mark(X1), X2)
mark(0) → 0
mark(tt) → tt
mark(s(X)) → s(mark(X))
mark(nil) → nil
a__zeros → zeros
a__U11(X1, X2) → U11(X1, X2)
a__U12(X) → U12(X)
a__isNatList(X) → isNatList(X)
a__U21(X1, X2) → U21(X1, X2)
a__U22(X) → U22(X)
a__isNat(X) → isNat(X)
a__U31(X1, X2) → U31(X1, X2)
a__U32(X) → U32(X)
a__U41(X1, X2, X3) → U41(X1, X2, X3)
a__U42(X1, X2) → U42(X1, X2)
a__U43(X) → U43(X)
a__isNatIList(X) → isNatIList(X)
a__U51(X1, X2, X3) → U51(X1, X2, X3)
a__U52(X1, X2) → U52(X1, X2)
a__U53(X) → U53(X)
a__U61(X1, X2) → U61(X1, X2)
a__length(X) → length(X)
a__and(X1, X2) → and(X1, X2)
a__isNatIListKind(X) → isNatIListKind(X)
a__isNatKind(X) → isNatKind(X)

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

(19) QDPOrderProof (EQUIVALENT transformation)

We use the reduction pair processor [LPAR04].

The following pairs can be oriented strictly and are deleted.

A__U51(tt, V1, V2) → A__U52(a__isNat(V1), V2)
A__U51(tt, V1, V2) → A__ISNAT(V1)
A__ISNAT(length(V1)) → A__U11(a__isNatIListKind(V1), V1)
MARK(U11(X1, X2)) → A__U11(mark(X1), X2)
MARK(U11(X1, X2)) → MARK(X1)
MARK(U12(X)) → MARK(X)
MARK(isNatList(X)) → A__ISNATLIST(X)
MARK(U21(X1, X2)) → A__U21(mark(X1), X2)
A__ISNAT(s(V1)) → A__U21(a__isNatKind(V1), V1)
MARK(U21(X1, X2)) → MARK(X1)
MARK(U22(X)) → MARK(X)
MARK(isNat(X)) → A__ISNAT(X)
MARK(U51(X1, X2, X3)) → A__U51(mark(X1), X2, X3)
MARK(U51(X1, X2, X3)) → MARK(X1)
MARK(U52(X1, X2)) → A__U52(mark(X1), X2)
MARK(isNatKind(X)) → A__ISNATKIND(X)
MARK(cons(X1, X2)) → MARK(X1)
MARK(s(X)) → MARK(X)

The remaining pairs can at least be oriented weakly.
Used ordering: Polynomial interpretation [POLO]:

POL(0) = 0
POL(A__AND(x₁, x₂)) = 1 + x₂
POL(A__ISNAT(x₁)) = x₁
POL(A__ISNATILISTKIND(x₁)) = 1
POL(A__ISNATKIND(x₁)) = 1
POL(A__ISNATLIST(x₁)) = x₁
POL(A__U11(x₁, x₂)) = x₂
POL(A__U21(x₁, x₂)) = x₂
POL(A__U51(x₁, x₂, x₃)) = 1 + x₂ + x₃
POL(A__U52(x₁, x₂)) = x₂
POL(MARK(x₁)) = 1 + x₁
POL(U11(x₁, x₂)) = 1 + x₁ + x₂
POL(U12(x₁)) = 1 + x₁
POL(U21(x₁, x₂)) = 1 + x₁ + x₂
POL(U22(x₁)) = 1 + x₁
POL(U31(x₁, x₂)) = 0
POL(U32(x₁)) = 0
POL(U41(x₁, x₂, x₃)) = 0
POL(U42(x₁, x₂)) = 0
POL(U43(x₁)) = x₁
POL(U51(x₁, x₂, x₃)) = 1 + x₁ + x₂ + x₃
POL(U52(x₁, x₂)) = x₁ + x₂
POL(U53(x₁)) = x₁
POL(U61(x₁, x₂)) = 0
POL(a__U11(x₁, x₂)) = 0
POL(a__U12(x₁)) = 0
POL(a__U21(x₁, x₂)) = 0
POL(a__U22(x₁)) = 0
POL(a__U31(x₁, x₂)) = 0
POL(a__U32(x₁)) = 0
POL(a__U41(x₁, x₂, x₃)) = 0
POL(a__U42(x₁, x₂)) = 0
POL(a__U43(x₁)) = 0
POL(a__U51(x₁, x₂, x₃)) = 0
POL(a__U52(x₁, x₂)) = 0
POL(a__U53(x₁)) = 0
POL(a__U61(x₁, x₂)) = 0
POL(a__and(x₁, x₂)) = 0
POL(a__isNat(x₁)) = 0
POL(a__isNatIList(x₁)) = 0
POL(a__isNatIListKind(x₁)) = 0
POL(a__isNatKind(x₁)) = 0
POL(a__isNatList(x₁)) = 0
POL(a__length(x₁)) = 0
POL(a__zeros) = 0
POL(and(x₁, x₂)) = x₁ + x₂
POL(cons(x₁, x₂)) = 1 + x₁ + x₂
POL(isNat(x₁)) = 1 + x₁
POL(isNatIList(x₁)) = 0
POL(isNatIListKind(x₁)) = 0
POL(isNatKind(x₁)) = 1 + x₁
POL(isNatList(x₁)) = 1 + x₁
POL(length(x₁)) = 1 + x₁
POL(mark(x₁)) = 0
POL(nil) = 0
POL(s(x₁)) = 1 + x₁
POL(tt) = 0
POL(zeros) = 0

The following usable rules [FROCOS05] were oriented: none

(20) Obligation:

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

A__U52(tt, V2) → A__ISNATLIST(V2)
A__ISNATLIST(cons(V1, V2)) → A__U51(a__and(a__isNatKind(V1), isNatIListKind(V2)), V1, V2)
A__U11(tt, V1) → A__ISNATLIST(V1)
A__ISNATLIST(cons(V1, V2)) → A__AND(a__isNatKind(V1), isNatIListKind(V2))
A__AND(tt, X) → MARK(X)
A__ISNATLIST(cons(V1, V2)) → A__ISNATKIND(V1)
A__ISNATKIND(length(V1)) → A__ISNATILISTKIND(V1)
A__ISNATILISTKIND(cons(V1, V2)) → A__AND(a__isNatKind(V1), isNatIListKind(V2))
A__ISNATILISTKIND(cons(V1, V2)) → A__ISNATKIND(V1)
A__ISNATKIND(s(V1)) → A__ISNATKIND(V1)
A__U21(tt, V1) → A__ISNAT(V1)
A__ISNAT(length(V1)) → A__ISNATILISTKIND(V1)
A__ISNAT(s(V1)) → A__ISNATKIND(V1)
MARK(U43(X)) → MARK(X)
MARK(U52(X1, X2)) → MARK(X1)
MARK(U53(X)) → MARK(X)
MARK(and(X1, X2)) → A__AND(mark(X1), X2)
MARK(and(X1, X2)) → MARK(X1)
MARK(isNatIListKind(X)) → A__ISNATILISTKIND(X)

The TRS R consists of the following rules:

a__zeros → cons(0, zeros)
a__U11(tt, V1) → a__U12(a__isNatList(V1))
a__U12(tt) → tt
a__U21(tt, V1) → a__U22(a__isNat(V1))
a__U22(tt) → tt
a__U31(tt, V) → a__U32(a__isNatList(V))
a__U32(tt) → tt
a__U41(tt, V1, V2) → a__U42(a__isNat(V1), V2)
a__U42(tt, V2) → a__U43(a__isNatIList(V2))
a__U43(tt) → tt
a__U51(tt, V1, V2) → a__U52(a__isNat(V1), V2)
a__U52(tt, V2) → a__U53(a__isNatList(V2))
a__U53(tt) → tt
a__U61(tt, L) → s(a__length(mark(L)))
a__and(tt, X) → mark(X)
a__isNat(0) → tt
a__isNat(length(V1)) → a__U11(a__isNatIListKind(V1), V1)
a__isNat(s(V1)) → a__U21(a__isNatKind(V1), V1)
a__isNatIList(V) → a__U31(a__isNatIListKind(V), V)
a__isNatIList(zeros) → tt
a__isNatIList(cons(V1, V2)) → a__U41(a__and(a__isNatKind(V1), isNatIListKind(V2)), V1, V2)
a__isNatIListKind(nil) → tt
a__isNatIListKind(zeros) → tt
a__isNatIListKind(cons(V1, V2)) → a__and(a__isNatKind(V1), isNatIListKind(V2))
a__isNatKind(0) → tt
a__isNatKind(length(V1)) → a__isNatIListKind(V1)
a__isNatKind(s(V1)) → a__isNatKind(V1)
a__isNatList(nil) → tt
a__isNatList(cons(V1, V2)) → a__U51(a__and(a__isNatKind(V1), isNatIListKind(V2)), V1, V2)
a__length(nil) → 0
a__length(cons(N, L)) → a__U61(a__and(a__and(a__isNatList(L), isNatIListKind(L)), and(isNat(N), isNatKind(N))), L)
mark(zeros) → a__zeros
mark(U11(X1, X2)) → a__U11(mark(X1), X2)
mark(U12(X)) → a__U12(mark(X))
mark(isNatList(X)) → a__isNatList(X)
mark(U21(X1, X2)) → a__U21(mark(X1), X2)
mark(U22(X)) → a__U22(mark(X))
mark(isNat(X)) → a__isNat(X)
mark(U31(X1, X2)) → a__U31(mark(X1), X2)
mark(U32(X)) → a__U32(mark(X))
mark(U41(X1, X2, X3)) → a__U41(mark(X1), X2, X3)
mark(U42(X1, X2)) → a__U42(mark(X1), X2)
mark(U43(X)) → a__U43(mark(X))
mark(isNatIList(X)) → a__isNatIList(X)
mark(U51(X1, X2, X3)) → a__U51(mark(X1), X2, X3)
mark(U52(X1, X2)) → a__U52(mark(X1), X2)
mark(U53(X)) → a__U53(mark(X))
mark(U61(X1, X2)) → a__U61(mark(X1), X2)
mark(length(X)) → a__length(mark(X))
mark(and(X1, X2)) → a__and(mark(X1), X2)
mark(isNatIListKind(X)) → a__isNatIListKind(X)
mark(isNatKind(X)) → a__isNatKind(X)
mark(cons(X1, X2)) → cons(mark(X1), X2)
mark(0) → 0
mark(tt) → tt
mark(s(X)) → s(mark(X))
mark(nil) → nil
a__zeros → zeros
a__U11(X1, X2) → U11(X1, X2)
a__U12(X) → U12(X)
a__isNatList(X) → isNatList(X)
a__U21(X1, X2) → U21(X1, X2)
a__U22(X) → U22(X)
a__isNat(X) → isNat(X)
a__U31(X1, X2) → U31(X1, X2)
a__U32(X) → U32(X)
a__U41(X1, X2, X3) → U41(X1, X2, X3)
a__U42(X1, X2) → U42(X1, X2)
a__U43(X) → U43(X)
a__isNatIList(X) → isNatIList(X)
a__U51(X1, X2, X3) → U51(X1, X2, X3)
a__U52(X1, X2) → U52(X1, X2)
a__U53(X) → U53(X)
a__U61(X1, X2) → U61(X1, X2)
a__length(X) → length(X)
a__and(X1, X2) → and(X1, X2)
a__isNatIListKind(X) → isNatIListKind(X)
a__isNatKind(X) → isNatKind(X)

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

(21) DependencyGraphProof (EQUIVALENT transformation)

The approximation of the Dependency Graph [LPAR04,FROCOS05,EDGSTAR] contains 1 SCC with 8 less nodes.

(22) Obligation:

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

MARK(U43(X)) → MARK(X)
MARK(U52(X1, X2)) → MARK(X1)
MARK(U53(X)) → MARK(X)
MARK(and(X1, X2)) → A__AND(mark(X1), X2)
A__AND(tt, X) → MARK(X)
MARK(and(X1, X2)) → MARK(X1)
MARK(isNatIListKind(X)) → A__ISNATILISTKIND(X)
A__ISNATILISTKIND(cons(V1, V2)) → A__AND(a__isNatKind(V1), isNatIListKind(V2))
A__ISNATILISTKIND(cons(V1, V2)) → A__ISNATKIND(V1)
A__ISNATKIND(length(V1)) → A__ISNATILISTKIND(V1)
A__ISNATKIND(s(V1)) → A__ISNATKIND(V1)

The TRS R consists of the following rules:

a__zeros → cons(0, zeros)
a__U11(tt, V1) → a__U12(a__isNatList(V1))
a__U12(tt) → tt
a__U21(tt, V1) → a__U22(a__isNat(V1))
a__U22(tt) → tt
a__U31(tt, V) → a__U32(a__isNatList(V))
a__U32(tt) → tt
a__U41(tt, V1, V2) → a__U42(a__isNat(V1), V2)
a__U42(tt, V2) → a__U43(a__isNatIList(V2))
a__U43(tt) → tt
a__U51(tt, V1, V2) → a__U52(a__isNat(V1), V2)
a__U52(tt, V2) → a__U53(a__isNatList(V2))
a__U53(tt) → tt
a__U61(tt, L) → s(a__length(mark(L)))
a__and(tt, X) → mark(X)
a__isNat(0) → tt
a__isNat(length(V1)) → a__U11(a__isNatIListKind(V1), V1)
a__isNat(s(V1)) → a__U21(a__isNatKind(V1), V1)
a__isNatIList(V) → a__U31(a__isNatIListKind(V), V)
a__isNatIList(zeros) → tt
a__isNatIList(cons(V1, V2)) → a__U41(a__and(a__isNatKind(V1), isNatIListKind(V2)), V1, V2)
a__isNatIListKind(nil) → tt
a__isNatIListKind(zeros) → tt
a__isNatIListKind(cons(V1, V2)) → a__and(a__isNatKind(V1), isNatIListKind(V2))
a__isNatKind(0) → tt
a__isNatKind(length(V1)) → a__isNatIListKind(V1)
a__isNatKind(s(V1)) → a__isNatKind(V1)
a__isNatList(nil) → tt
a__isNatList(cons(V1, V2)) → a__U51(a__and(a__isNatKind(V1), isNatIListKind(V2)), V1, V2)
a__length(nil) → 0
a__length(cons(N, L)) → a__U61(a__and(a__and(a__isNatList(L), isNatIListKind(L)), and(isNat(N), isNatKind(N))), L)
mark(zeros) → a__zeros
mark(U11(X1, X2)) → a__U11(mark(X1), X2)
mark(U12(X)) → a__U12(mark(X))
mark(isNatList(X)) → a__isNatList(X)
mark(U21(X1, X2)) → a__U21(mark(X1), X2)
mark(U22(X)) → a__U22(mark(X))
mark(isNat(X)) → a__isNat(X)
mark(U31(X1, X2)) → a__U31(mark(X1), X2)
mark(U32(X)) → a__U32(mark(X))
mark(U41(X1, X2, X3)) → a__U41(mark(X1), X2, X3)
mark(U42(X1, X2)) → a__U42(mark(X1), X2)
mark(U43(X)) → a__U43(mark(X))
mark(isNatIList(X)) → a__isNatIList(X)
mark(U51(X1, X2, X3)) → a__U51(mark(X1), X2, X3)
mark(U52(X1, X2)) → a__U52(mark(X1), X2)
mark(U53(X)) → a__U53(mark(X))
mark(U61(X1, X2)) → a__U61(mark(X1), X2)
mark(length(X)) → a__length(mark(X))
mark(and(X1, X2)) → a__and(mark(X1), X2)
mark(isNatIListKind(X)) → a__isNatIListKind(X)
mark(isNatKind(X)) → a__isNatKind(X)
mark(cons(X1, X2)) → cons(mark(X1), X2)
mark(0) → 0
mark(tt) → tt
mark(s(X)) → s(mark(X))
mark(nil) → nil
a__zeros → zeros
a__U11(X1, X2) → U11(X1, X2)
a__U12(X) → U12(X)
a__isNatList(X) → isNatList(X)
a__U21(X1, X2) → U21(X1, X2)
a__U22(X) → U22(X)
a__isNat(X) → isNat(X)
a__U31(X1, X2) → U31(X1, X2)
a__U32(X) → U32(X)
a__U41(X1, X2, X3) → U41(X1, X2, X3)
a__U42(X1, X2) → U42(X1, X2)
a__U43(X) → U43(X)
a__isNatIList(X) → isNatIList(X)
a__U51(X1, X2, X3) → U51(X1, X2, X3)
a__U52(X1, X2) → U52(X1, X2)
a__U53(X) → U53(X)
a__U61(X1, X2) → U61(X1, X2)
a__length(X) → length(X)
a__and(X1, X2) → and(X1, X2)
a__isNatIListKind(X) → isNatIListKind(X)
a__isNatKind(X) → isNatKind(X)

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

(23) QDPOrderProof (EQUIVALENT transformation)

We use the reduction pair processor [LPAR04].

The following pairs can be oriented strictly and are deleted.

MARK(U43(X)) → MARK(X)
MARK(U52(X1, X2)) → MARK(X1)
MARK(U53(X)) → MARK(X)
A__ISNATILISTKIND(cons(V1, V2)) → A__AND(a__isNatKind(V1), isNatIListKind(V2))
A__ISNATILISTKIND(cons(V1, V2)) → A__ISNATKIND(V1)
A__ISNATKIND(length(V1)) → A__ISNATILISTKIND(V1)

The remaining pairs can at least be oriented weakly.
Used ordering: Polynomial interpretation [POLO]:

POL(0) = 0
POL(A__AND(x₁, x₂)) = x₂
POL(A__ISNATILISTKIND(x₁)) = x₁
POL(A__ISNATKIND(x₁)) = x₁
POL(MARK(x₁)) = x₁
POL(U11(x₁, x₂)) = 0
POL(U12(x₁)) = 0
POL(U21(x₁, x₂)) = 0
POL(U22(x₁)) = 0
POL(U31(x₁, x₂)) = 0
POL(U32(x₁)) = 0
POL(U41(x₁, x₂, x₃)) = 0
POL(U42(x₁, x₂)) = 0
POL(U43(x₁)) = 1 + x₁
POL(U51(x₁, x₂, x₃)) = 0
POL(U52(x₁, x₂)) = 1 + x₁
POL(U53(x₁)) = 1 + x₁
POL(U61(x₁, x₂)) = 0
POL(a__U11(x₁, x₂)) = 0
POL(a__U12(x₁)) = 0
POL(a__U21(x₁, x₂)) = 0
POL(a__U22(x₁)) = 0
POL(a__U31(x₁, x₂)) = 0
POL(a__U32(x₁)) = 0
POL(a__U41(x₁, x₂, x₃)) = 0
POL(a__U42(x₁, x₂)) = 0
POL(a__U43(x₁)) = 0
POL(a__U51(x₁, x₂, x₃)) = 0
POL(a__U52(x₁, x₂)) = 0
POL(a__U53(x₁)) = 0
POL(a__U61(x₁, x₂)) = 0
POL(a__and(x₁, x₂)) = 0
POL(a__isNat(x₁)) = 0
POL(a__isNatIList(x₁)) = 0
POL(a__isNatIListKind(x₁)) = 0
POL(a__isNatKind(x₁)) = 0
POL(a__isNatList(x₁)) = 0
POL(a__length(x₁)) = 0
POL(a__zeros) = 0
POL(and(x₁, x₂)) = x₁ + x₂
POL(cons(x₁, x₂)) = 1 + x₁ + x₂
POL(isNat(x₁)) = 0
POL(isNatIList(x₁)) = 0
POL(isNatIListKind(x₁)) = x₁
POL(isNatKind(x₁)) = 0
POL(isNatList(x₁)) = 0
POL(length(x₁)) = 1 + x₁
POL(mark(x₁)) = 0
POL(nil) = 0
POL(s(x₁)) = x₁
POL(tt) = 0
POL(zeros) = 0

The following usable rules [FROCOS05] were oriented: none

(24) Obligation:

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

MARK(and(X1, X2)) → A__AND(mark(X1), X2)
A__AND(tt, X) → MARK(X)
MARK(and(X1, X2)) → MARK(X1)
MARK(isNatIListKind(X)) → A__ISNATILISTKIND(X)
A__ISNATKIND(s(V1)) → A__ISNATKIND(V1)

The TRS R consists of the following rules:

a__zeros → cons(0, zeros)
a__U11(tt, V1) → a__U12(a__isNatList(V1))
a__U12(tt) → tt
a__U21(tt, V1) → a__U22(a__isNat(V1))
a__U22(tt) → tt
a__U31(tt, V) → a__U32(a__isNatList(V))
a__U32(tt) → tt
a__U41(tt, V1, V2) → a__U42(a__isNat(V1), V2)
a__U42(tt, V2) → a__U43(a__isNatIList(V2))
a__U43(tt) → tt
a__U51(tt, V1, V2) → a__U52(a__isNat(V1), V2)
a__U52(tt, V2) → a__U53(a__isNatList(V2))
a__U53(tt) → tt
a__U61(tt, L) → s(a__length(mark(L)))
a__and(tt, X) → mark(X)
a__isNat(0) → tt
a__isNat(length(V1)) → a__U11(a__isNatIListKind(V1), V1)
a__isNat(s(V1)) → a__U21(a__isNatKind(V1), V1)
a__isNatIList(V) → a__U31(a__isNatIListKind(V), V)
a__isNatIList(zeros) → tt
a__isNatIList(cons(V1, V2)) → a__U41(a__and(a__isNatKind(V1), isNatIListKind(V2)), V1, V2)
a__isNatIListKind(nil) → tt
a__isNatIListKind(zeros) → tt
a__isNatIListKind(cons(V1, V2)) → a__and(a__isNatKind(V1), isNatIListKind(V2))
a__isNatKind(0) → tt
a__isNatKind(length(V1)) → a__isNatIListKind(V1)
a__isNatKind(s(V1)) → a__isNatKind(V1)
a__isNatList(nil) → tt
a__isNatList(cons(V1, V2)) → a__U51(a__and(a__isNatKind(V1), isNatIListKind(V2)), V1, V2)
a__length(nil) → 0
a__length(cons(N, L)) → a__U61(a__and(a__and(a__isNatList(L), isNatIListKind(L)), and(isNat(N), isNatKind(N))), L)
mark(zeros) → a__zeros
mark(U11(X1, X2)) → a__U11(mark(X1), X2)
mark(U12(X)) → a__U12(mark(X))
mark(isNatList(X)) → a__isNatList(X)
mark(U21(X1, X2)) → a__U21(mark(X1), X2)
mark(U22(X)) → a__U22(mark(X))
mark(isNat(X)) → a__isNat(X)
mark(U31(X1, X2)) → a__U31(mark(X1), X2)
mark(U32(X)) → a__U32(mark(X))
mark(U41(X1, X2, X3)) → a__U41(mark(X1), X2, X3)
mark(U42(X1, X2)) → a__U42(mark(X1), X2)
mark(U43(X)) → a__U43(mark(X))
mark(isNatIList(X)) → a__isNatIList(X)
mark(U51(X1, X2, X3)) → a__U51(mark(X1), X2, X3)
mark(U52(X1, X2)) → a__U52(mark(X1), X2)
mark(U53(X)) → a__U53(mark(X))
mark(U61(X1, X2)) → a__U61(mark(X1), X2)
mark(length(X)) → a__length(mark(X))
mark(and(X1, X2)) → a__and(mark(X1), X2)
mark(isNatIListKind(X)) → a__isNatIListKind(X)
mark(isNatKind(X)) → a__isNatKind(X)
mark(cons(X1, X2)) → cons(mark(X1), X2)
mark(0) → 0
mark(tt) → tt
mark(s(X)) → s(mark(X))
mark(nil) → nil
a__zeros → zeros
a__U11(X1, X2) → U11(X1, X2)
a__U12(X) → U12(X)
a__isNatList(X) → isNatList(X)
a__U21(X1, X2) → U21(X1, X2)
a__U22(X) → U22(X)
a__isNat(X) → isNat(X)
a__U31(X1, X2) → U31(X1, X2)
a__U32(X) → U32(X)
a__U41(X1, X2, X3) → U41(X1, X2, X3)
a__U42(X1, X2) → U42(X1, X2)
a__U43(X) → U43(X)
a__isNatIList(X) → isNatIList(X)
a__U51(X1, X2, X3) → U51(X1, X2, X3)
a__U52(X1, X2) → U52(X1, X2)
a__U53(X) → U53(X)
a__U61(X1, X2) → U61(X1, X2)
a__length(X) → length(X)
a__and(X1, X2) → and(X1, X2)
a__isNatIListKind(X) → isNatIListKind(X)
a__isNatKind(X) → isNatKind(X)

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

(25) DependencyGraphProof (EQUIVALENT transformation)

The approximation of the Dependency Graph [LPAR04,FROCOS05,EDGSTAR] contains 2 SCCs with 1 less node.

(26) Complex Obligation (AND)

(27) Obligation:

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

A__ISNATKIND(s(V1)) → A__ISNATKIND(V1)

The TRS R consists of the following rules:

a__zeros → cons(0, zeros)
a__U11(tt, V1) → a__U12(a__isNatList(V1))
a__U12(tt) → tt
a__U21(tt, V1) → a__U22(a__isNat(V1))
a__U22(tt) → tt
a__U31(tt, V) → a__U32(a__isNatList(V))
a__U32(tt) → tt
a__U41(tt, V1, V2) → a__U42(a__isNat(V1), V2)
a__U42(tt, V2) → a__U43(a__isNatIList(V2))
a__U43(tt) → tt
a__U51(tt, V1, V2) → a__U52(a__isNat(V1), V2)
a__U52(tt, V2) → a__U53(a__isNatList(V2))
a__U53(tt) → tt
a__U61(tt, L) → s(a__length(mark(L)))
a__and(tt, X) → mark(X)
a__isNat(0) → tt
a__isNat(length(V1)) → a__U11(a__isNatIListKind(V1), V1)
a__isNat(s(V1)) → a__U21(a__isNatKind(V1), V1)
a__isNatIList(V) → a__U31(a__isNatIListKind(V), V)
a__isNatIList(zeros) → tt
a__isNatIList(cons(V1, V2)) → a__U41(a__and(a__isNatKind(V1), isNatIListKind(V2)), V1, V2)
a__isNatIListKind(nil) → tt
a__isNatIListKind(zeros) → tt
a__isNatIListKind(cons(V1, V2)) → a__and(a__isNatKind(V1), isNatIListKind(V2))
a__isNatKind(0) → tt
a__isNatKind(length(V1)) → a__isNatIListKind(V1)
a__isNatKind(s(V1)) → a__isNatKind(V1)
a__isNatList(nil) → tt
a__isNatList(cons(V1, V2)) → a__U51(a__and(a__isNatKind(V1), isNatIListKind(V2)), V1, V2)
a__length(nil) → 0
a__length(cons(N, L)) → a__U61(a__and(a__and(a__isNatList(L), isNatIListKind(L)), and(isNat(N), isNatKind(N))), L)
mark(zeros) → a__zeros
mark(U11(X1, X2)) → a__U11(mark(X1), X2)
mark(U12(X)) → a__U12(mark(X))
mark(isNatList(X)) → a__isNatList(X)
mark(U21(X1, X2)) → a__U21(mark(X1), X2)
mark(U22(X)) → a__U22(mark(X))
mark(isNat(X)) → a__isNat(X)
mark(U31(X1, X2)) → a__U31(mark(X1), X2)
mark(U32(X)) → a__U32(mark(X))
mark(U41(X1, X2, X3)) → a__U41(mark(X1), X2, X3)
mark(U42(X1, X2)) → a__U42(mark(X1), X2)
mark(U43(X)) → a__U43(mark(X))
mark(isNatIList(X)) → a__isNatIList(X)
mark(U51(X1, X2, X3)) → a__U51(mark(X1), X2, X3)
mark(U52(X1, X2)) → a__U52(mark(X1), X2)
mark(U53(X)) → a__U53(mark(X))
mark(U61(X1, X2)) → a__U61(mark(X1), X2)
mark(length(X)) → a__length(mark(X))
mark(and(X1, X2)) → a__and(mark(X1), X2)
mark(isNatIListKind(X)) → a__isNatIListKind(X)
mark(isNatKind(X)) → a__isNatKind(X)
mark(cons(X1, X2)) → cons(mark(X1), X2)
mark(0) → 0
mark(tt) → tt
mark(s(X)) → s(mark(X))
mark(nil) → nil
a__zeros → zeros
a__U11(X1, X2) → U11(X1, X2)
a__U12(X) → U12(X)
a__isNatList(X) → isNatList(X)
a__U21(X1, X2) → U21(X1, X2)
a__U22(X) → U22(X)
a__isNat(X) → isNat(X)
a__U31(X1, X2) → U31(X1, X2)
a__U32(X) → U32(X)
a__U41(X1, X2, X3) → U41(X1, X2, X3)
a__U42(X1, X2) → U42(X1, X2)
a__U43(X) → U43(X)
a__isNatIList(X) → isNatIList(X)
a__U51(X1, X2, X3) → U51(X1, X2, X3)
a__U52(X1, X2) → U52(X1, X2)
a__U53(X) → U53(X)
a__U61(X1, X2) → U61(X1, X2)
a__length(X) → length(X)
a__and(X1, X2) → and(X1, X2)
a__isNatIListKind(X) → isNatIListKind(X)
a__isNatKind(X) → isNatKind(X)

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

(28) UsableRulesProof (EQUIVALENT transformation)

We can use the usable rules and reduction pair processor [LPAR04] with the Ce-compatible extension of the polynomial order that maps every function symbol to the sum of its arguments. Then, we can delete all non-usable rules [FROCOS05] from R.

(29) Obligation:

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

A__ISNATKIND(s(V1)) → A__ISNATKIND(V1)

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

(30) QDPSizeChangeProof (EQUIVALENT transformation)

By using the subterm criterion [SUBTERM_CRITERION] together with the size-change analysis [AAECC05] 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:

A__ISNATKIND(s(V1)) → A__ISNATKIND(V1)
The graph contains the following edges 1 > 1

(31) TRUE

(32) Obligation:

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

A__AND(tt, X) → MARK(X)
MARK(and(X1, X2)) → A__AND(mark(X1), X2)
MARK(and(X1, X2)) → MARK(X1)

The TRS R consists of the following rules:

a__zeros → cons(0, zeros)
a__U11(tt, V1) → a__U12(a__isNatList(V1))
a__U12(tt) → tt
a__U21(tt, V1) → a__U22(a__isNat(V1))
a__U22(tt) → tt
a__U31(tt, V) → a__U32(a__isNatList(V))
a__U32(tt) → tt
a__U41(tt, V1, V2) → a__U42(a__isNat(V1), V2)
a__U42(tt, V2) → a__U43(a__isNatIList(V2))
a__U43(tt) → tt
a__U51(tt, V1, V2) → a__U52(a__isNat(V1), V2)
a__U52(tt, V2) → a__U53(a__isNatList(V2))
a__U53(tt) → tt
a__U61(tt, L) → s(a__length(mark(L)))
a__and(tt, X) → mark(X)
a__isNat(0) → tt
a__isNat(length(V1)) → a__U11(a__isNatIListKind(V1), V1)
a__isNat(s(V1)) → a__U21(a__isNatKind(V1), V1)
a__isNatIList(V) → a__U31(a__isNatIListKind(V), V)
a__isNatIList(zeros) → tt
a__isNatIList(cons(V1, V2)) → a__U41(a__and(a__isNatKind(V1), isNatIListKind(V2)), V1, V2)
a__isNatIListKind(nil) → tt
a__isNatIListKind(zeros) → tt
a__isNatIListKind(cons(V1, V2)) → a__and(a__isNatKind(V1), isNatIListKind(V2))
a__isNatKind(0) → tt
a__isNatKind(length(V1)) → a__isNatIListKind(V1)
a__isNatKind(s(V1)) → a__isNatKind(V1)
a__isNatList(nil) → tt
a__isNatList(cons(V1, V2)) → a__U51(a__and(a__isNatKind(V1), isNatIListKind(V2)), V1, V2)
a__length(nil) → 0
a__length(cons(N, L)) → a__U61(a__and(a__and(a__isNatList(L), isNatIListKind(L)), and(isNat(N), isNatKind(N))), L)
mark(zeros) → a__zeros
mark(U11(X1, X2)) → a__U11(mark(X1), X2)
mark(U12(X)) → a__U12(mark(X))
mark(isNatList(X)) → a__isNatList(X)
mark(U21(X1, X2)) → a__U21(mark(X1), X2)
mark(U22(X)) → a__U22(mark(X))
mark(isNat(X)) → a__isNat(X)
mark(U31(X1, X2)) → a__U31(mark(X1), X2)
mark(U32(X)) → a__U32(mark(X))
mark(U41(X1, X2, X3)) → a__U41(mark(X1), X2, X3)
mark(U42(X1, X2)) → a__U42(mark(X1), X2)
mark(U43(X)) → a__U43(mark(X))
mark(isNatIList(X)) → a__isNatIList(X)
mark(U51(X1, X2, X3)) → a__U51(mark(X1), X2, X3)
mark(U52(X1, X2)) → a__U52(mark(X1), X2)
mark(U53(X)) → a__U53(mark(X))
mark(U61(X1, X2)) → a__U61(mark(X1), X2)
mark(length(X)) → a__length(mark(X))
mark(and(X1, X2)) → a__and(mark(X1), X2)
mark(isNatIListKind(X)) → a__isNatIListKind(X)
mark(isNatKind(X)) → a__isNatKind(X)
mark(cons(X1, X2)) → cons(mark(X1), X2)
mark(0) → 0
mark(tt) → tt
mark(s(X)) → s(mark(X))
mark(nil) → nil
a__zeros → zeros
a__U11(X1, X2) → U11(X1, X2)
a__U12(X) → U12(X)
a__isNatList(X) → isNatList(X)
a__U21(X1, X2) → U21(X1, X2)
a__U22(X) → U22(X)
a__isNat(X) → isNat(X)
a__U31(X1, X2) → U31(X1, X2)
a__U32(X) → U32(X)
a__U41(X1, X2, X3) → U41(X1, X2, X3)
a__U42(X1, X2) → U42(X1, X2)
a__U43(X) → U43(X)
a__isNatIList(X) → isNatIList(X)
a__U51(X1, X2, X3) → U51(X1, X2, X3)
a__U52(X1, X2) → U52(X1, X2)
a__U53(X) → U53(X)
a__U61(X1, X2) → U61(X1, X2)
a__length(X) → length(X)
a__and(X1, X2) → and(X1, X2)
a__isNatIListKind(X) → isNatIListKind(X)
a__isNatKind(X) → isNatKind(X)

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

(33) QDPSizeChangeProof (EQUIVALENT transformation)

By using the subterm criterion [SUBTERM_CRITERION] together with the size-change analysis [AAECC05] 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:

MARK(and(X1, X2)) → A__AND(mark(X1), X2)
The graph contains the following edges 1 > 2
MARK(and(X1, X2)) → MARK(X1)
The graph contains the following edges 1 > 1
A__AND(tt, X) → MARK(X)
The graph contains the following edges 2 >= 1

(34) TRUE

(35) Obligation:

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

A__U61(tt, L) → A__LENGTH(mark(L))
A__LENGTH(cons(N, L)) → A__U61(a__and(a__and(a__isNatList(L), isNatIListKind(L)), and(isNat(N), isNatKind(N))), L)

The TRS R consists of the following rules:

a__zeros → cons(0, zeros)
a__U11(tt, V1) → a__U12(a__isNatList(V1))
a__U12(tt) → tt
a__U21(tt, V1) → a__U22(a__isNat(V1))
a__U22(tt) → tt
a__U31(tt, V) → a__U32(a__isNatList(V))
a__U32(tt) → tt
a__U41(tt, V1, V2) → a__U42(a__isNat(V1), V2)
a__U42(tt, V2) → a__U43(a__isNatIList(V2))
a__U43(tt) → tt
a__U51(tt, V1, V2) → a__U52(a__isNat(V1), V2)
a__U52(tt, V2) → a__U53(a__isNatList(V2))
a__U53(tt) → tt
a__U61(tt, L) → s(a__length(mark(L)))
a__and(tt, X) → mark(X)
a__isNat(0) → tt
a__isNat(length(V1)) → a__U11(a__isNatIListKind(V1), V1)
a__isNat(s(V1)) → a__U21(a__isNatKind(V1), V1)
a__isNatIList(V) → a__U31(a__isNatIListKind(V), V)
a__isNatIList(zeros) → tt
a__isNatIList(cons(V1, V2)) → a__U41(a__and(a__isNatKind(V1), isNatIListKind(V2)), V1, V2)
a__isNatIListKind(nil) → tt
a__isNatIListKind(zeros) → tt
a__isNatIListKind(cons(V1, V2)) → a__and(a__isNatKind(V1), isNatIListKind(V2))
a__isNatKind(0) → tt
a__isNatKind(length(V1)) → a__isNatIListKind(V1)
a__isNatKind(s(V1)) → a__isNatKind(V1)
a__isNatList(nil) → tt
a__isNatList(cons(V1, V2)) → a__U51(a__and(a__isNatKind(V1), isNatIListKind(V2)), V1, V2)
a__length(nil) → 0
a__length(cons(N, L)) → a__U61(a__and(a__and(a__isNatList(L), isNatIListKind(L)), and(isNat(N), isNatKind(N))), L)
mark(zeros) → a__zeros
mark(U11(X1, X2)) → a__U11(mark(X1), X2)
mark(U12(X)) → a__U12(mark(X))
mark(isNatList(X)) → a__isNatList(X)
mark(U21(X1, X2)) → a__U21(mark(X1), X2)
mark(U22(X)) → a__U22(mark(X))
mark(isNat(X)) → a__isNat(X)
mark(U31(X1, X2)) → a__U31(mark(X1), X2)
mark(U32(X)) → a__U32(mark(X))
mark(U41(X1, X2, X3)) → a__U41(mark(X1), X2, X3)
mark(U42(X1, X2)) → a__U42(mark(X1), X2)
mark(U43(X)) → a__U43(mark(X))
mark(isNatIList(X)) → a__isNatIList(X)
mark(U51(X1, X2, X3)) → a__U51(mark(X1), X2, X3)
mark(U52(X1, X2)) → a__U52(mark(X1), X2)
mark(U53(X)) → a__U53(mark(X))
mark(U61(X1, X2)) → a__U61(mark(X1), X2)
mark(length(X)) → a__length(mark(X))
mark(and(X1, X2)) → a__and(mark(X1), X2)
mark(isNatIListKind(X)) → a__isNatIListKind(X)
mark(isNatKind(X)) → a__isNatKind(X)
mark(cons(X1, X2)) → cons(mark(X1), X2)
mark(0) → 0
mark(tt) → tt
mark(s(X)) → s(mark(X))
mark(nil) → nil
a__zeros → zeros
a__U11(X1, X2) → U11(X1, X2)
a__U12(X) → U12(X)
a__isNatList(X) → isNatList(X)
a__U21(X1, X2) → U21(X1, X2)
a__U22(X) → U22(X)
a__isNat(X) → isNat(X)
a__U31(X1, X2) → U31(X1, X2)
a__U32(X) → U32(X)
a__U41(X1, X2, X3) → U41(X1, X2, X3)
a__U42(X1, X2) → U42(X1, X2)
a__U43(X) → U43(X)
a__isNatIList(X) → isNatIList(X)
a__U51(X1, X2, X3) → U51(X1, X2, X3)
a__U52(X1, X2) → U52(X1, X2)
a__U53(X) → U53(X)
a__U61(X1, X2) → U61(X1, X2)
a__length(X) → length(X)
a__and(X1, X2) → and(X1, X2)
a__isNatIListKind(X) → isNatIListKind(X)
a__isNatKind(X) → isNatKind(X)

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

(36) QDPOrderProof (EQUIVALENT transformation)

We use the reduction pair processor [LPAR04].

The following pairs can be oriented strictly and are deleted.

A__U61(tt, L) → A__LENGTH(mark(L))

The remaining pairs can at least be oriented weakly.
Used ordering: Matrix interpretation [MATRO]:

POL(A__U61(x₁, x₂)) =
/ 0 \

\ 0 /

+
/ 0 1 \

\ 0 0 /

· x₁ +
/ 0 1 \

\ 0 0 /

· x₂

POL(tt) =
/ 0 \

\ 1 /

POL(A__LENGTH(x₁)) =
/ 0 \

\ 0 /

+
/ 1 0 \

\ 0 0 /

· x₁

POL(mark(x₁)) =
/ 0 \

\ 1 /

+
/ 0 1 \

\ 0 1 /

· x₁

POL(cons(x₁, x₂)) =
/ 0 \

\ 0 /

+
/ 0 0 \

\ 0 0 /

· x₁ +
/ 1 1 \

\ 1 1 /

· x₂

POL(a__and(x₁, x₂)) =
/ 0 \

\ 0 /

+
/ 0 0 \

\ 0 1 /

· x₁ +
/ 0 1 \

\ 0 1 /

· x₂

POL(a__isNatList(x₁)) =
/ 0 \

\ 0 /

+
/ 1 0 \

\ 1 0 /

· x₁

POL(isNatIListKind(x₁)) =
/ 0 \

\ 0 /

+
/ 0 0 \

\ 0 0 /

· x₁

POL(and(x₁, x₂)) =
/ 0 \

\ 0 /

+
/ 0 0 \

\ 0 1 /

· x₁ +
/ 0 0 \

\ 0 1 /

· x₂

POL(isNat(x₁)) =
/ 0 \

\ 0 /

+
/ 0 0 \

\ 0 0 /

· x₁

POL(isNatKind(x₁)) =
/ 0 \

\ 0 /

+
/ 0 0 \

\ 0 0 /

· x₁

POL(s(x₁)) =
/ 0 \

\ 0 /

+
/ 0 0 \

\ 0 0 /

· x₁

POL(0) =
/ 0 \

\ 0 /

POL(a__isNatKind(x₁)) =
/ 0 \

\ 1 /

+
/ 0 0 \

\ 0 0 /

· x₁

POL(length(x₁)) =
/ 0 \

\ 0 /

+
/ 0 0 \

\ 0 0 /

· x₁

POL(a__isNatIListKind(x₁)) =
/ 0 \

\ 1 /

+
/ 0 0 \

\ 0 0 /

· x₁

POL(a__length(x₁)) =
/ 0 \

\ 0 /

+
/ 0 0 \

\ 0 0 /

· x₁

POL(a__isNat(x₁)) =
/ 0 \

\ 1 /

+
/ 0 0 \

\ 0 0 /

· x₁

POL(a__U22(x₁)) =
/ 0 \

\ 1 /

+
/ 0 0 \

\ 0 0 /

· x₁

POL(U22(x₁)) =
/ 0 \

\ 1 /

+
/ 0 0 \

\ 0 0 /

· x₁

POL(a__U21(x₁, x₂)) =
/ 0 \

\ 1 /

+
/ 0 0 \

\ 0 0 /

· x₁ +
/ 0 0 \

\ 0 0 /

· x₂

POL(U21(x₁, x₂)) =
/ 0 \

\ 0 /

+
/ 0 0 \

\ 0 0 /

· x₁ +
/ 0 0 \

\ 0 0 /

· x₂

POL(isNatList(x₁)) =
/ 0 \

\ 0 /

+
/ 1 0 \

\ 1 0 /

· x₁

POL(a__U12(x₁)) =
/ 0 \

\ 1 /

+
/ 0 0 \

\ 0 0 /

· x₁

POL(U12(x₁)) =
/ 0 \

\ 1 /

+
/ 0 0 \

\ 0 0 /

· x₁

POL(a__U11(x₁, x₂)) =
/ 0 \

\ 1 /

+
/ 0 0 \

\ 0 0 /

· x₁ +
/ 0 0 \

\ 0 0 /

· x₂

POL(U11(x₁, x₂)) =
/ 0 \

\ 0 /

+
/ 0 0 \

\ 0 0 /

· x₁ +
/ 0 0 \

\ 0 0 /

· x₂

POL(a__zeros) =
/ 0 \

\ 0 /

POL(zeros) =
/ 0 \

\ 0 /

POL(nil) =
/ 1 \

\ 1 /

POL(a__U51(x₁, x₂, x₃)) =
/ 0 \

\ 0 /

+
/ 0 0 \

\ 0 0 /

· x₁ +
/ 0 0 \

\ 0 0 /

· x₂ +
/ 1 0 \

\ 1 0 /

· x₃

POL(U51(x₁, x₂, x₃)) =
/ 0 \

\ 0 /

+
/ 0 0 \

\ 0 0 /

· x₁ +
/ 0 0 \

\ 0 0 /

· x₂ +
/ 0 0 \

\ 1 0 /

· x₃

POL(a__U52(x₁, x₂)) =
/ 0 \

\ 0 /

+
/ 0 0 \

\ 0 0 /

· x₁ +
/ 1 0 \

\ 1 0 /

· x₂

POL(U52(x₁, x₂)) =
/ 0 \

\ 0 /

+
/ 0 0 \

\ 0 0 /

· x₁ +
/ 0 0 \

\ 1 0 /

· x₂

POL(a__U43(x₁)) =
/ 0 \

\ 1 /

+
/ 0 0 \

\ 0 0 /

· x₁

POL(U43(x₁)) =
/ 0 \

\ 1 /

+
/ 0 0 \

\ 0 0 /

· x₁

POL(a__isNatIList(x₁)) =
/ 0 \

\ 1 /

+
/ 0 0 \

\ 0 0 /

· x₁

POL(isNatIList(x₁)) =
/ 0 \

\ 0 /

+
/ 0 0 \

\ 0 0 /

· x₁

POL(a__U41(x₁, x₂, x₃)) =
/ 0 \

\ 1 /

+
/ 0 0 \

\ 0 0 /

· x₁ +
/ 0 0 \

\ 0 0 /

· x₂ +
/ 0 0 \

\ 0 0 /

· x₃

POL(U41(x₁, x₂, x₃)) =
/ 0 \

\ 0 /

+
/ 0 0 \

\ 0 0 /

· x₁ +
/ 0 0 \

\ 0 0 /

· x₂ +
/ 0 0 \

\ 0 0 /

· x₃

POL(a__U42(x₁, x₂)) =
/ 0 \

\ 1 /

+
/ 0 0 \

\ 0 0 /

· x₁ +
/ 0 0 \

\ 0 0 /

· x₂

POL(U42(x₁, x₂)) =
/ 0 \

\ 1 /

+
/ 0 0 \

\ 0 0 /

· x₁ +
/ 0 0 \

\ 0 0 /

· x₂

POL(a__U31(x₁, x₂)) =
/ 0 \

\ 1 /

+
/ 0 0 \

\ 0 0 /

· x₁ +
/ 0 0 \

\ 0 0 /

· x₂

POL(U31(x₁, x₂)) =
/ 0 \

\ 0 /

+
/ 0 0 \

\ 0 0 /

· x₁ +
/ 0 0 \

\ 0 0 /

· x₂

POL(a__U32(x₁)) =
/ 0 \

\ 1 /

+
/ 0 0 \

\ 0 0 /

· x₁

POL(U32(x₁)) =
/ 0 \

\ 0 /

+
/ 0 0 \

\ 0 0 /

· x₁

POL(a__U53(x₁)) =
/ 0 \

\ 0 /

+
/ 1 0 \

\ 0 1 /

· x₁

POL(U53(x₁)) =
/ 0 \

\ 0 /

+
/ 0 0 \

\ 0 1 /

· x₁

POL(a__U61(x₁, x₂)) =
/ 0 \

\ 0 /

+
/ 0 0 \

\ 0 0 /

· x₁ +
/ 0 0 \

\ 0 0 /

· x₂

POL(U61(x₁, x₂)) =
/ 0 \

\ 0 /

+
/ 0 0 \

\ 0 0 /

· x₁ +
/ 0 0 \

\ 0 0 /

· x₂

The following usable rules [FROCOS05] were oriented:

mark(s(X)) → s(mark(X))
mark(tt) → tt
mark(0) → 0
mark(cons(X1, X2)) → cons(mark(X1), X2)
a__isNatKind(length(V1)) → a__isNatIListKind(V1)
mark(and(X1, X2)) → a__and(mark(X1), X2)
a__isNatKind(s(V1)) → a__isNatKind(V1)
a__isNatIListKind(cons(V1, V2)) → a__and(a__isNatKind(V1), isNatIListKind(V2))
a__and(tt, X) → mark(X)
mark(isNatIListKind(X)) → a__isNatIListKind(X)
mark(isNatKind(X)) → a__isNatKind(X)
mark(length(X)) → a__length(mark(X))
a__isNat(X) → isNat(X)
a__U22(X) → U22(X)
a__U21(X1, X2) → U21(X1, X2)
a__isNatList(X) → isNatList(X)
a__U12(X) → U12(X)
a__U11(X1, X2) → U11(X1, X2)
a__zeros → zeros
mark(nil) → nil
a__U51(X1, X2, X3) → U51(X1, X2, X3)
a__U52(X1, X2) → U52(X1, X2)
a__U43(X) → U43(X)
a__isNatIList(X) → isNatIList(X)
a__U41(X1, X2, X3) → U41(X1, X2, X3)
a__U42(X1, X2) → U42(X1, X2)
a__U31(X1, X2) → U31(X1, X2)
a__U32(X) → U32(X)
a__isNatIListKind(X) → isNatIListKind(X)
a__isNatKind(X) → isNatKind(X)
a__length(X) → length(X)
a__and(X1, X2) → and(X1, X2)
a__U53(X) → U53(X)
a__U61(X1, X2) → U61(X1, X2)
a__U12(tt) → tt
a__U21(tt, V1) → a__U22(a__isNat(V1))
a__zeros → cons(0, zeros)
a__U11(tt, V1) → a__U12(a__isNatList(V1))
a__U32(tt) → tt
a__U41(tt, V1, V2) → a__U42(a__isNat(V1), V2)
a__U22(tt) → tt
a__U31(tt, V) → a__U32(a__isNatList(V))
a__U51(tt, V1, V2) → a__U52(a__isNat(V1), V2)
a__U52(tt, V2) → a__U53(a__isNatList(V2))
a__U42(tt, V2) → a__U43(a__isNatIList(V2))
a__U43(tt) → tt
a__isNat(0) → tt
a__U53(tt) → tt
a__U61(tt, L) → s(a__length(mark(L)))
a__isNat(s(V1)) → a__U21(a__isNatKind(V1), V1)
a__isNat(length(V1)) → a__U11(a__isNatIListKind(V1), V1)
a__isNatIList(zeros) → tt
a__isNatIList(V) → a__U31(a__isNatIListKind(V), V)
a__isNatIListKind(nil) → tt
a__isNatIList(cons(V1, V2)) → a__U41(a__and(a__isNatKind(V1), isNatIListKind(V2)), V1, V2)
a__isNatIListKind(zeros) → tt
a__isNatKind(0) → tt
a__isNatList(nil) → tt
a__length(nil) → 0
a__isNatList(cons(V1, V2)) → a__U51(a__and(a__isNatKind(V1), isNatIListKind(V2)), V1, V2)
mark(zeros) → a__zeros
a__length(cons(N, L)) → a__U61(a__and(a__and(a__isNatList(L), isNatIListKind(L)), and(isNat(N), isNatKind(N))), L)
mark(U11(X1, X2)) → a__U11(mark(X1), X2)
mark(U12(X)) → a__U12(mark(X))
mark(isNatList(X)) → a__isNatList(X)
mark(U21(X1, X2)) → a__U21(mark(X1), X2)
mark(U22(X)) → a__U22(mark(X))
mark(isNat(X)) → a__isNat(X)
mark(U31(X1, X2)) → a__U31(mark(X1), X2)
mark(U32(X)) → a__U32(mark(X))
mark(U41(X1, X2, X3)) → a__U41(mark(X1), X2, X3)
mark(U42(X1, X2)) → a__U42(mark(X1), X2)
mark(U43(X)) → a__U43(mark(X))
mark(isNatIList(X)) → a__isNatIList(X)
mark(U51(X1, X2, X3)) → a__U51(mark(X1), X2, X3)
mark(U52(X1, X2)) → a__U52(mark(X1), X2)
mark(U53(X)) → a__U53(mark(X))
mark(U61(X1, X2)) → a__U61(mark(X1), X2)

(37) Obligation:

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

A__LENGTH(cons(N, L)) → A__U61(a__and(a__and(a__isNatList(L), isNatIListKind(L)), and(isNat(N), isNatKind(N))), L)

The TRS R consists of the following rules:

a__zeros → cons(0, zeros)
a__U11(tt, V1) → a__U12(a__isNatList(V1))
a__U12(tt) → tt
a__U21(tt, V1) → a__U22(a__isNat(V1))
a__U22(tt) → tt
a__U31(tt, V) → a__U32(a__isNatList(V))
a__U32(tt) → tt
a__U41(tt, V1, V2) → a__U42(a__isNat(V1), V2)
a__U42(tt, V2) → a__U43(a__isNatIList(V2))
a__U43(tt) → tt
a__U51(tt, V1, V2) → a__U52(a__isNat(V1), V2)
a__U52(tt, V2) → a__U53(a__isNatList(V2))
a__U53(tt) → tt
a__U61(tt, L) → s(a__length(mark(L)))
a__and(tt, X) → mark(X)
a__isNat(0) → tt
a__isNat(length(V1)) → a__U11(a__isNatIListKind(V1), V1)
a__isNat(s(V1)) → a__U21(a__isNatKind(V1), V1)
a__isNatIList(V) → a__U31(a__isNatIListKind(V), V)
a__isNatIList(zeros) → tt
a__isNatIList(cons(V1, V2)) → a__U41(a__and(a__isNatKind(V1), isNatIListKind(V2)), V1, V2)
a__isNatIListKind(nil) → tt
a__isNatIListKind(zeros) → tt
a__isNatIListKind(cons(V1, V2)) → a__and(a__isNatKind(V1), isNatIListKind(V2))
a__isNatKind(0) → tt
a__isNatKind(length(V1)) → a__isNatIListKind(V1)
a__isNatKind(s(V1)) → a__isNatKind(V1)
a__isNatList(nil) → tt
a__isNatList(cons(V1, V2)) → a__U51(a__and(a__isNatKind(V1), isNatIListKind(V2)), V1, V2)
a__length(nil) → 0
a__length(cons(N, L)) → a__U61(a__and(a__and(a__isNatList(L), isNatIListKind(L)), and(isNat(N), isNatKind(N))), L)
mark(zeros) → a__zeros
mark(U11(X1, X2)) → a__U11(mark(X1), X2)
mark(U12(X)) → a__U12(mark(X))
mark(isNatList(X)) → a__isNatList(X)
mark(U21(X1, X2)) → a__U21(mark(X1), X2)
mark(U22(X)) → a__U22(mark(X))
mark(isNat(X)) → a__isNat(X)
mark(U31(X1, X2)) → a__U31(mark(X1), X2)
mark(U32(X)) → a__U32(mark(X))
mark(U41(X1, X2, X3)) → a__U41(mark(X1), X2, X3)
mark(U42(X1, X2)) → a__U42(mark(X1), X2)
mark(U43(X)) → a__U43(mark(X))
mark(isNatIList(X)) → a__isNatIList(X)
mark(U51(X1, X2, X3)) → a__U51(mark(X1), X2, X3)
mark(U52(X1, X2)) → a__U52(mark(X1), X2)
mark(U53(X)) → a__U53(mark(X))
mark(U61(X1, X2)) → a__U61(mark(X1), X2)
mark(length(X)) → a__length(mark(X))
mark(and(X1, X2)) → a__and(mark(X1), X2)
mark(isNatIListKind(X)) → a__isNatIListKind(X)
mark(isNatKind(X)) → a__isNatKind(X)
mark(cons(X1, X2)) → cons(mark(X1), X2)
mark(0) → 0
mark(tt) → tt
mark(s(X)) → s(mark(X))
mark(nil) → nil
a__zeros → zeros
a__U11(X1, X2) → U11(X1, X2)
a__U12(X) → U12(X)
a__isNatList(X) → isNatList(X)
a__U21(X1, X2) → U21(X1, X2)
a__U22(X) → U22(X)
a__isNat(X) → isNat(X)
a__U31(X1, X2) → U31(X1, X2)
a__U32(X) → U32(X)
a__U41(X1, X2, X3) → U41(X1, X2, X3)
a__U42(X1, X2) → U42(X1, X2)
a__U43(X) → U43(X)
a__isNatIList(X) → isNatIList(X)
a__U51(X1, X2, X3) → U51(X1, X2, X3)
a__U52(X1, X2) → U52(X1, X2)
a__U53(X) → U53(X)
a__U61(X1, X2) → U61(X1, X2)
a__length(X) → length(X)
a__and(X1, X2) → and(X1, X2)
a__isNatIListKind(X) → isNatIListKind(X)
a__isNatKind(X) → isNatKind(X)

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

(38) DependencyGraphProof (EQUIVALENT transformation)

The approximation of the Dependency Graph [LPAR04,FROCOS05,EDGSTAR] contains 0 SCCs with 1 less node.

(39) TRUE

(40) Obligation:

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

A__ISNATILIST(cons(V1, V2)) → A__U41(a__and(a__isNatKind(V1), isNatIListKind(V2)), V1, V2)
A__U41(tt, V1, V2) → A__U42(a__isNat(V1), V2)
A__U42(tt, V2) → A__ISNATILIST(V2)

The TRS R consists of the following rules:

a__zeros → cons(0, zeros)
a__U11(tt, V1) → a__U12(a__isNatList(V1))
a__U12(tt) → tt
a__U21(tt, V1) → a__U22(a__isNat(V1))
a__U22(tt) → tt
a__U31(tt, V) → a__U32(a__isNatList(V))
a__U32(tt) → tt
a__U41(tt, V1, V2) → a__U42(a__isNat(V1), V2)
a__U42(tt, V2) → a__U43(a__isNatIList(V2))
a__U43(tt) → tt
a__U51(tt, V1, V2) → a__U52(a__isNat(V1), V2)
a__U52(tt, V2) → a__U53(a__isNatList(V2))
a__U53(tt) → tt
a__U61(tt, L) → s(a__length(mark(L)))
a__and(tt, X) → mark(X)
a__isNat(0) → tt
a__isNat(length(V1)) → a__U11(a__isNatIListKind(V1), V1)
a__isNat(s(V1)) → a__U21(a__isNatKind(V1), V1)
a__isNatIList(V) → a__U31(a__isNatIListKind(V), V)
a__isNatIList(zeros) → tt
a__isNatIList(cons(V1, V2)) → a__U41(a__and(a__isNatKind(V1), isNatIListKind(V2)), V1, V2)
a__isNatIListKind(nil) → tt
a__isNatIListKind(zeros) → tt
a__isNatIListKind(cons(V1, V2)) → a__and(a__isNatKind(V1), isNatIListKind(V2))
a__isNatKind(0) → tt
a__isNatKind(length(V1)) → a__isNatIListKind(V1)
a__isNatKind(s(V1)) → a__isNatKind(V1)
a__isNatList(nil) → tt
a__isNatList(cons(V1, V2)) → a__U51(a__and(a__isNatKind(V1), isNatIListKind(V2)), V1, V2)
a__length(nil) → 0
a__length(cons(N, L)) → a__U61(a__and(a__and(a__isNatList(L), isNatIListKind(L)), and(isNat(N), isNatKind(N))), L)
mark(zeros) → a__zeros
mark(U11(X1, X2)) → a__U11(mark(X1), X2)
mark(U12(X)) → a__U12(mark(X))
mark(isNatList(X)) → a__isNatList(X)
mark(U21(X1, X2)) → a__U21(mark(X1), X2)
mark(U22(X)) → a__U22(mark(X))
mark(isNat(X)) → a__isNat(X)
mark(U31(X1, X2)) → a__U31(mark(X1), X2)
mark(U32(X)) → a__U32(mark(X))
mark(U41(X1, X2, X3)) → a__U41(mark(X1), X2, X3)
mark(U42(X1, X2)) → a__U42(mark(X1), X2)
mark(U43(X)) → a__U43(mark(X))
mark(isNatIList(X)) → a__isNatIList(X)
mark(U51(X1, X2, X3)) → a__U51(mark(X1), X2, X3)
mark(U52(X1, X2)) → a__U52(mark(X1), X2)
mark(U53(X)) → a__U53(mark(X))
mark(U61(X1, X2)) → a__U61(mark(X1), X2)
mark(length(X)) → a__length(mark(X))
mark(and(X1, X2)) → a__and(mark(X1), X2)
mark(isNatIListKind(X)) → a__isNatIListKind(X)
mark(isNatKind(X)) → a__isNatKind(X)
mark(cons(X1, X2)) → cons(mark(X1), X2)
mark(0) → 0
mark(tt) → tt
mark(s(X)) → s(mark(X))
mark(nil) → nil
a__zeros → zeros
a__U11(X1, X2) → U11(X1, X2)
a__U12(X) → U12(X)
a__isNatList(X) → isNatList(X)
a__U21(X1, X2) → U21(X1, X2)
a__U22(X) → U22(X)
a__isNat(X) → isNat(X)
a__U31(X1, X2) → U31(X1, X2)
a__U32(X) → U32(X)
a__U41(X1, X2, X3) → U41(X1, X2, X3)
a__U42(X1, X2) → U42(X1, X2)
a__U43(X) → U43(X)
a__isNatIList(X) → isNatIList(X)
a__U51(X1, X2, X3) → U51(X1, X2, X3)
a__U52(X1, X2) → U52(X1, X2)
a__U53(X) → U53(X)
a__U61(X1, X2) → U61(X1, X2)
a__length(X) → length(X)
a__and(X1, X2) → and(X1, X2)
a__isNatIListKind(X) → isNatIListKind(X)
a__isNatKind(X) → isNatKind(X)

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

(41) QDPSizeChangeProof (EQUIVALENT transformation)

By using the subterm criterion [SUBTERM_CRITERION] together with the size-change analysis [AAECC05] 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:

A__U41(tt, V1, V2) → A__U42(a__isNat(V1), V2)
The graph contains the following edges 3 >= 2
A__U42(tt, V2) → A__ISNATILIST(V2)
The graph contains the following edges 2 >= 1
A__ISNATILIST(cons(V1, V2)) → A__U41(a__and(a__isNatKind(V1), isNatIListKind(V2)), V1, V2)
The graph contains the following edges 1 > 2, 1 > 3

(0) Obligation:

(1) DependencyPairsProof (EQUIVALENT transformation)

(2) Obligation:

(3) DependencyGraphProof (EQUIVALENT transformation)

(4) Obligation:

(5) QDPOrderProof (EQUIVALENT transformation)

(6) Obligation:

(7) DependencyGraphProof (EQUIVALENT transformation)

(8) Complex Obligation (AND)

(9) Obligation:

(10) QDPOrderProof (EQUIVALENT transformation)

(11) Obligation:

(12) DependencyGraphProof (EQUIVALENT transformation)

(13) Obligation:

(14) QDPOrderProof (EQUIVALENT transformation)

(15) Obligation:

(16) DependencyGraphProof (EQUIVALENT transformation)

(17) Complex Obligation (AND)

(18) Obligation:

(19) QDPOrderProof (EQUIVALENT transformation)

(20) Obligation:

(21) DependencyGraphProof (EQUIVALENT transformation)

(22) Obligation:

(23) QDPOrderProof (EQUIVALENT transformation)

(24) Obligation:

(25) DependencyGraphProof (EQUIVALENT transformation)

(26) Complex Obligation (AND)

(27) Obligation:

(28) UsableRulesProof (EQUIVALENT transformation)

(29) Obligation:

(30) QDPSizeChangeProof (EQUIVALENT transformation)

(31) TRUE

(32) Obligation:

(33) QDPSizeChangeProof (EQUIVALENT transformation)

(34) TRUE

(35) Obligation:

(36) QDPOrderProof (EQUIVALENT transformation)

(37) Obligation:

(38) DependencyGraphProof (EQUIVALENT transformation)

(39) TRUE

(40) Obligation:

(41) QDPSizeChangeProof (EQUIVALENT transformation)

(42) TRUE