MAYBE 'epo* (timeout of 60.0 seconds)' -------------------------------- Answer: MAYBE Input Problem: innermost runtime-complexity with respect to Rules: { a__from(X) -> cons(mark(X), from(s(X))) , a__sel(0(), cons(X, Y)) -> mark(X) , a__sel(s(X), cons(Y, Z)) -> a__sel(mark(X), mark(Z)) , mark(from(X)) -> a__from(mark(X)) , mark(sel(X1, X2)) -> a__sel(mark(X1), mark(X2)) , mark(cons(X1, X2)) -> cons(mark(X1), X2) , mark(s(X)) -> s(mark(X)) , mark(0()) -> 0() , a__from(X) -> from(X) , a__sel(X1, X2) -> sel(X1, X2)} Proof Output: The input cannot be shown compatible