(0) Obligation:
Q restricted rewrite system:
The TRS R consists of the following rules:
f(h(x)) → f(i(x))
g(i(x)) → g(h(x))
h(a) → b
i(a) → b
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:
F(h(x)) → F(i(x))
F(h(x)) → I(x)
G(i(x)) → G(h(x))
G(i(x)) → H(x)
The TRS R consists of the following rules:
f(h(x)) → f(i(x))
g(i(x)) → g(h(x))
h(a) → b
i(a) → b
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 0 SCCs with 4 less nodes.
(4) TRUE