MAYBE 'epo* (timeout of 60.0 seconds)' -------------------------------- Answer: MAYBE Input Problem: innermost runtime-complexity with respect to Rules: { f(x, a(b(y))) -> f(a(a(x)), y) , f(x, b(a(y))) -> f(b(b(x)), y) , f(a(x), y) -> f(x, a(y)) , f(b(x), y) -> f(x, b(y))} Proof Output: The input cannot be shown compatible