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:

zeroscons(0, zeros)
tail(cons(X, XS)) → XS

Q is empty.


QTRS

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

zeroscons(0, zeros)
tail(cons(X, XS)) → XS

Q is empty.