Termination w.r.t. Q of the following Term Rewriting System could be proven:
Q restricted rewrite system:
The TRS R consists of the following rules:
le2(0, Y) -> true
le2(s1(X), 0) -> false
le2(s1(X), s1(Y)) -> le2(X, Y)
minus2(0, Y) -> 0
minus2(s1(X), Y) -> ifMinus3(le2(s1(X), Y), s1(X), Y)
ifMinus3(true, s1(X), Y) -> 0
ifMinus3(false, s1(X), Y) -> s1(minus2(X, Y))
quot2(0, s1(Y)) -> 0
quot2(s1(X), s1(Y)) -> s1(quot2(minus2(X, Y), s1(Y)))
Q is empty.
↳ QTRS
↳ Non-Overlap Check
Q restricted rewrite system:
The TRS R consists of the following rules:
le2(0, Y) -> true
le2(s1(X), 0) -> false
le2(s1(X), s1(Y)) -> le2(X, Y)
minus2(0, Y) -> 0
minus2(s1(X), Y) -> ifMinus3(le2(s1(X), Y), s1(X), Y)
ifMinus3(true, s1(X), Y) -> 0
ifMinus3(false, s1(X), Y) -> s1(minus2(X, Y))
quot2(0, s1(Y)) -> 0
quot2(s1(X), s1(Y)) -> s1(quot2(minus2(X, Y), s1(Y)))
Q is empty.
The TRS is non-overlapping. Hence, we can switch to innermost.
↳ QTRS
↳ Non-Overlap Check
↳ QTRS
↳ DependencyPairsProof
Q restricted rewrite system:
The TRS R consists of the following rules:
le2(0, Y) -> true
le2(s1(X), 0) -> false
le2(s1(X), s1(Y)) -> le2(X, Y)
minus2(0, Y) -> 0
minus2(s1(X), Y) -> ifMinus3(le2(s1(X), Y), s1(X), Y)
ifMinus3(true, s1(X), Y) -> 0
ifMinus3(false, s1(X), Y) -> s1(minus2(X, Y))
quot2(0, s1(Y)) -> 0
quot2(s1(X), s1(Y)) -> s1(quot2(minus2(X, Y), s1(Y)))
The set Q consists of the following terms:
le2(0, x0)
le2(s1(x0), 0)
le2(s1(x0), s1(x1))
minus2(0, x0)
minus2(s1(x0), x1)
ifMinus3(true, s1(x0), x1)
ifMinus3(false, s1(x0), x1)
quot2(0, s1(x0))
quot2(s1(x0), s1(x1))
Q DP problem:
The TRS P consists of the following rules:
QUOT2(s1(X), s1(Y)) -> QUOT2(minus2(X, Y), s1(Y))
IFMINUS3(false, s1(X), Y) -> MINUS2(X, Y)
MINUS2(s1(X), Y) -> LE2(s1(X), Y)
MINUS2(s1(X), Y) -> IFMINUS3(le2(s1(X), Y), s1(X), Y)
LE2(s1(X), s1(Y)) -> LE2(X, Y)
QUOT2(s1(X), s1(Y)) -> MINUS2(X, Y)
The TRS R consists of the following rules:
le2(0, Y) -> true
le2(s1(X), 0) -> false
le2(s1(X), s1(Y)) -> le2(X, Y)
minus2(0, Y) -> 0
minus2(s1(X), Y) -> ifMinus3(le2(s1(X), Y), s1(X), Y)
ifMinus3(true, s1(X), Y) -> 0
ifMinus3(false, s1(X), Y) -> s1(minus2(X, Y))
quot2(0, s1(Y)) -> 0
quot2(s1(X), s1(Y)) -> s1(quot2(minus2(X, Y), s1(Y)))
The set Q consists of the following terms:
le2(0, x0)
le2(s1(x0), 0)
le2(s1(x0), s1(x1))
minus2(0, x0)
minus2(s1(x0), x1)
ifMinus3(true, s1(x0), x1)
ifMinus3(false, s1(x0), x1)
quot2(0, s1(x0))
quot2(s1(x0), s1(x1))
We have to consider all minimal (P,Q,R)-chains.
↳ QTRS
↳ Non-Overlap Check
↳ QTRS
↳ DependencyPairsProof
↳ QDP
↳ DependencyGraphProof
Q DP problem:
The TRS P consists of the following rules:
QUOT2(s1(X), s1(Y)) -> QUOT2(minus2(X, Y), s1(Y))
IFMINUS3(false, s1(X), Y) -> MINUS2(X, Y)
MINUS2(s1(X), Y) -> LE2(s1(X), Y)
MINUS2(s1(X), Y) -> IFMINUS3(le2(s1(X), Y), s1(X), Y)
LE2(s1(X), s1(Y)) -> LE2(X, Y)
QUOT2(s1(X), s1(Y)) -> MINUS2(X, Y)
The TRS R consists of the following rules:
le2(0, Y) -> true
le2(s1(X), 0) -> false
le2(s1(X), s1(Y)) -> le2(X, Y)
minus2(0, Y) -> 0
minus2(s1(X), Y) -> ifMinus3(le2(s1(X), Y), s1(X), Y)
ifMinus3(true, s1(X), Y) -> 0
ifMinus3(false, s1(X), Y) -> s1(minus2(X, Y))
quot2(0, s1(Y)) -> 0
quot2(s1(X), s1(Y)) -> s1(quot2(minus2(X, Y), s1(Y)))
The set Q consists of the following terms:
le2(0, x0)
le2(s1(x0), 0)
le2(s1(x0), s1(x1))
minus2(0, x0)
minus2(s1(x0), x1)
ifMinus3(true, s1(x0), x1)
ifMinus3(false, s1(x0), x1)
quot2(0, s1(x0))
quot2(s1(x0), s1(x1))
We have to consider all minimal (P,Q,R)-chains.
The approximation of the Dependency Graph contains 3 SCCs with 2 less nodes.
↳ QTRS
↳ Non-Overlap Check
↳ QTRS
↳ DependencyPairsProof
↳ QDP
↳ DependencyGraphProof
↳ AND
↳ QDP
↳ QDPAfsSolverProof
↳ QDP
↳ QDP
Q DP problem:
The TRS P consists of the following rules:
LE2(s1(X), s1(Y)) -> LE2(X, Y)
The TRS R consists of the following rules:
le2(0, Y) -> true
le2(s1(X), 0) -> false
le2(s1(X), s1(Y)) -> le2(X, Y)
minus2(0, Y) -> 0
minus2(s1(X), Y) -> ifMinus3(le2(s1(X), Y), s1(X), Y)
ifMinus3(true, s1(X), Y) -> 0
ifMinus3(false, s1(X), Y) -> s1(minus2(X, Y))
quot2(0, s1(Y)) -> 0
quot2(s1(X), s1(Y)) -> s1(quot2(minus2(X, Y), s1(Y)))
The set Q consists of the following terms:
le2(0, x0)
le2(s1(x0), 0)
le2(s1(x0), s1(x1))
minus2(0, x0)
minus2(s1(x0), x1)
ifMinus3(true, s1(x0), x1)
ifMinus3(false, s1(x0), x1)
quot2(0, s1(x0))
quot2(s1(x0), s1(x1))
We have to consider all minimal (P,Q,R)-chains.
By using an argument filtering and a montonic ordering, at least one Dependency Pair of this SCC can be strictly oriented.
LE2(s1(X), s1(Y)) -> LE2(X, Y)
Used argument filtering: LE2(x1, x2) = x2
s1(x1) = s1(x1)
Used ordering: Quasi Precedence:
trivial
↳ QTRS
↳ Non-Overlap Check
↳ QTRS
↳ DependencyPairsProof
↳ QDP
↳ DependencyGraphProof
↳ AND
↳ QDP
↳ QDPAfsSolverProof
↳ QDP
↳ PisEmptyProof
↳ QDP
↳ QDP
Q DP problem:
P is empty.
The TRS R consists of the following rules:
le2(0, Y) -> true
le2(s1(X), 0) -> false
le2(s1(X), s1(Y)) -> le2(X, Y)
minus2(0, Y) -> 0
minus2(s1(X), Y) -> ifMinus3(le2(s1(X), Y), s1(X), Y)
ifMinus3(true, s1(X), Y) -> 0
ifMinus3(false, s1(X), Y) -> s1(minus2(X, Y))
quot2(0, s1(Y)) -> 0
quot2(s1(X), s1(Y)) -> s1(quot2(minus2(X, Y), s1(Y)))
The set Q consists of the following terms:
le2(0, x0)
le2(s1(x0), 0)
le2(s1(x0), s1(x1))
minus2(0, x0)
minus2(s1(x0), x1)
ifMinus3(true, s1(x0), x1)
ifMinus3(false, s1(x0), x1)
quot2(0, s1(x0))
quot2(s1(x0), s1(x1))
We have to consider all minimal (P,Q,R)-chains.
The TRS P is empty. Hence, there is no (P,Q,R) chain.
↳ QTRS
↳ Non-Overlap Check
↳ QTRS
↳ DependencyPairsProof
↳ QDP
↳ DependencyGraphProof
↳ AND
↳ QDP
↳ QDP
↳ QDPAfsSolverProof
↳ QDP
Q DP problem:
The TRS P consists of the following rules:
IFMINUS3(false, s1(X), Y) -> MINUS2(X, Y)
MINUS2(s1(X), Y) -> IFMINUS3(le2(s1(X), Y), s1(X), Y)
The TRS R consists of the following rules:
le2(0, Y) -> true
le2(s1(X), 0) -> false
le2(s1(X), s1(Y)) -> le2(X, Y)
minus2(0, Y) -> 0
minus2(s1(X), Y) -> ifMinus3(le2(s1(X), Y), s1(X), Y)
ifMinus3(true, s1(X), Y) -> 0
ifMinus3(false, s1(X), Y) -> s1(minus2(X, Y))
quot2(0, s1(Y)) -> 0
quot2(s1(X), s1(Y)) -> s1(quot2(minus2(X, Y), s1(Y)))
The set Q consists of the following terms:
le2(0, x0)
le2(s1(x0), 0)
le2(s1(x0), s1(x1))
minus2(0, x0)
minus2(s1(x0), x1)
ifMinus3(true, s1(x0), x1)
ifMinus3(false, s1(x0), x1)
quot2(0, s1(x0))
quot2(s1(x0), s1(x1))
We have to consider all minimal (P,Q,R)-chains.
By using an argument filtering and a montonic ordering, at least one Dependency Pair of this SCC can be strictly oriented.
IFMINUS3(false, s1(X), Y) -> MINUS2(X, Y)
Used argument filtering: IFMINUS3(x1, x2, x3) = x2
s1(x1) = s1(x1)
MINUS2(x1, x2) = x1
le2(x1, x2) = le
0 = 0
false = false
true = true
Used ordering: Quasi Precedence:
le > false
le > true
↳ QTRS
↳ Non-Overlap Check
↳ QTRS
↳ DependencyPairsProof
↳ QDP
↳ DependencyGraphProof
↳ AND
↳ QDP
↳ QDP
↳ QDPAfsSolverProof
↳ QDP
↳ DependencyGraphProof
↳ QDP
Q DP problem:
The TRS P consists of the following rules:
MINUS2(s1(X), Y) -> IFMINUS3(le2(s1(X), Y), s1(X), Y)
The TRS R consists of the following rules:
le2(0, Y) -> true
le2(s1(X), 0) -> false
le2(s1(X), s1(Y)) -> le2(X, Y)
minus2(0, Y) -> 0
minus2(s1(X), Y) -> ifMinus3(le2(s1(X), Y), s1(X), Y)
ifMinus3(true, s1(X), Y) -> 0
ifMinus3(false, s1(X), Y) -> s1(minus2(X, Y))
quot2(0, s1(Y)) -> 0
quot2(s1(X), s1(Y)) -> s1(quot2(minus2(X, Y), s1(Y)))
The set Q consists of the following terms:
le2(0, x0)
le2(s1(x0), 0)
le2(s1(x0), s1(x1))
minus2(0, x0)
minus2(s1(x0), x1)
ifMinus3(true, s1(x0), x1)
ifMinus3(false, s1(x0), x1)
quot2(0, s1(x0))
quot2(s1(x0), s1(x1))
We have to consider all minimal (P,Q,R)-chains.
The approximation of the Dependency Graph contains 0 SCCs with 1 less node.
↳ QTRS
↳ Non-Overlap Check
↳ QTRS
↳ DependencyPairsProof
↳ QDP
↳ DependencyGraphProof
↳ AND
↳ QDP
↳ QDP
↳ QDP
↳ QDPAfsSolverProof
Q DP problem:
The TRS P consists of the following rules:
QUOT2(s1(X), s1(Y)) -> QUOT2(minus2(X, Y), s1(Y))
The TRS R consists of the following rules:
le2(0, Y) -> true
le2(s1(X), 0) -> false
le2(s1(X), s1(Y)) -> le2(X, Y)
minus2(0, Y) -> 0
minus2(s1(X), Y) -> ifMinus3(le2(s1(X), Y), s1(X), Y)
ifMinus3(true, s1(X), Y) -> 0
ifMinus3(false, s1(X), Y) -> s1(minus2(X, Y))
quot2(0, s1(Y)) -> 0
quot2(s1(X), s1(Y)) -> s1(quot2(minus2(X, Y), s1(Y)))
The set Q consists of the following terms:
le2(0, x0)
le2(s1(x0), 0)
le2(s1(x0), s1(x1))
minus2(0, x0)
minus2(s1(x0), x1)
ifMinus3(true, s1(x0), x1)
ifMinus3(false, s1(x0), x1)
quot2(0, s1(x0))
quot2(s1(x0), s1(x1))
We have to consider all minimal (P,Q,R)-chains.
By using an argument filtering and a montonic ordering, at least one Dependency Pair of this SCC can be strictly oriented.
QUOT2(s1(X), s1(Y)) -> QUOT2(minus2(X, Y), s1(Y))
Used argument filtering: QUOT2(x1, x2) = x1
s1(x1) = s1(x1)
minus2(x1, x2) = x1
0 = 0
ifMinus3(x1, x2, x3) = x2
le2(x1, x2) = le
false = false
true = true
Used ordering: Quasi Precedence:
s_1 > 0
[le, false] > true > 0
↳ QTRS
↳ Non-Overlap Check
↳ QTRS
↳ DependencyPairsProof
↳ QDP
↳ DependencyGraphProof
↳ AND
↳ QDP
↳ QDP
↳ QDP
↳ QDPAfsSolverProof
↳ QDP
↳ PisEmptyProof
Q DP problem:
P is empty.
The TRS R consists of the following rules:
le2(0, Y) -> true
le2(s1(X), 0) -> false
le2(s1(X), s1(Y)) -> le2(X, Y)
minus2(0, Y) -> 0
minus2(s1(X), Y) -> ifMinus3(le2(s1(X), Y), s1(X), Y)
ifMinus3(true, s1(X), Y) -> 0
ifMinus3(false, s1(X), Y) -> s1(minus2(X, Y))
quot2(0, s1(Y)) -> 0
quot2(s1(X), s1(Y)) -> s1(quot2(minus2(X, Y), s1(Y)))
The set Q consists of the following terms:
le2(0, x0)
le2(s1(x0), 0)
le2(s1(x0), s1(x1))
minus2(0, x0)
minus2(s1(x0), x1)
ifMinus3(true, s1(x0), x1)
ifMinus3(false, s1(x0), x1)
quot2(0, s1(x0))
quot2(s1(x0), s1(x1))
We have to consider all minimal (P,Q,R)-chains.
The TRS P is empty. Hence, there is no (P,Q,R) chain.