MAYBE 'Pop* (timeout of 60.0 seconds)' -------------------------------- Answer: MAYBE Input Problem: innermost runtime-complexity with respect to Rules: { numbers() -> d(0()) , d(x) -> if(le(x, nr()), x) , if(true(), x) -> cons(x, d(s(x))) , if(false(), x) -> nil() , le(0(), y) -> true() , le(s(x), 0()) -> false() , le(s(x), s(y)) -> le(x, y) , nr() -> ack(s(s(s(s(s(s(0())))))), 0()) , ack(0(), x) -> s(x) , ack(s(x), 0()) -> ack(x, s(0())) , ack(s(x), s(y)) -> ack(x, ack(s(x), y))} Proof Output: The input cannot be shown compatible