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:
f2(a, f2(x, a)) -> f2(a, f2(f2(a, x), f2(a, a)))
Q is empty.
↳ QTRS
↳ DependencyPairsProof
Q restricted rewrite system:
The TRS R consists of the following rules:
f2(a, f2(x, a)) -> f2(a, f2(f2(a, x), f2(a, a)))
Q is empty.
Using Dependency Pairs [1,13] we result in the following initial DP problem:
Q DP problem:
The TRS P consists of the following rules:
F2(a, f2(x, a)) -> F2(a, f2(f2(a, x), f2(a, a)))
F2(a, f2(x, a)) -> F2(a, a)
F2(a, f2(x, a)) -> F2(f2(a, x), f2(a, a))
F2(a, f2(x, a)) -> F2(a, x)
The TRS R consists of the following rules:
f2(a, f2(x, a)) -> f2(a, f2(f2(a, x), f2(a, a)))
Q is empty.
We have to consider all minimal (P,Q,R)-chains.
↳ QTRS
↳ DependencyPairsProof
↳ QDP
↳ DependencyGraphProof
Q DP problem:
The TRS P consists of the following rules:
F2(a, f2(x, a)) -> F2(a, f2(f2(a, x), f2(a, a)))
F2(a, f2(x, a)) -> F2(a, a)
F2(a, f2(x, a)) -> F2(f2(a, x), f2(a, a))
F2(a, f2(x, a)) -> F2(a, x)
The TRS R consists of the following rules:
f2(a, f2(x, a)) -> f2(a, f2(f2(a, x), f2(a, a)))
Q is empty.
We have to consider all minimal (P,Q,R)-chains.
The approximation of the Dependency Graph [13,14,18] contains 1 SCC with 3 less nodes.
↳ QTRS
↳ DependencyPairsProof
↳ QDP
↳ DependencyGraphProof
↳ QDP
↳ QDPOrderProof
Q DP problem:
The TRS P consists of the following rules:
F2(a, f2(x, a)) -> F2(a, x)
The TRS R consists of the following rules:
f2(a, f2(x, a)) -> f2(a, f2(f2(a, x), f2(a, a)))
Q is empty.
We have to consider all minimal (P,Q,R)-chains.
We use the reduction pair processor [13].
The following pairs can be oriented strictly and are deleted.
F2(a, f2(x, a)) -> F2(a, x)
The remaining pairs can at least be oriented weakly.
none
Used ordering: Polynomial interpretation [21]:
POL(F2(x1, x2)) = 2·x2
POL(a) = 0
POL(f2(x1, x2)) = 1 + 2·x1 + 2·x2
The following usable rules [14] were oriented:
none
↳ QTRS
↳ DependencyPairsProof
↳ QDP
↳ DependencyGraphProof
↳ QDP
↳ QDPOrderProof
↳ QDP
↳ PisEmptyProof
Q DP problem:
P is empty.
The TRS R consists of the following rules:
f2(a, f2(x, a)) -> f2(a, f2(f2(a, x), f2(a, a)))
Q is empty.
We have to consider all minimal (P,Q,R)-chains.
The TRS P is empty. Hence, there is no (P,Q,R) chain.