Termination w.r.t. Q of the following Term Rewriting System could not be shown:
Q restricted rewrite system:
The TRS R consists of the following rules:
f(a, f(x, a)) → f(f(x, f(f(a, a), a)), a)
Q is empty.
↳ QTRS
Q restricted rewrite system:
The TRS R consists of the following rules:
f(a, f(x, a)) → f(f(x, f(f(a, a), a)), a)
Q is empty.