MAYBE 'Pop* with parameter subtitution (timeout of 60.0 seconds)' ----------------------------------------------------------- Answer: MAYBE Input Problem: innermost runtime-complexity with respect to Rules: { a__zeros() -> cons(0(), zeros()) , a__tail(cons(X, XS)) -> mark(XS) , mark(zeros()) -> a__zeros() , mark(tail(X)) -> a__tail(mark(X)) , mark(cons(X1, X2)) -> cons(mark(X1), X2) , mark(0()) -> 0() , a__zeros() -> zeros() , a__tail(X) -> tail(X)} Proof Output: The input cannot be shown compatible