MAYBE

'epo* (timeout of 60.0 seconds)'
--------------------------------
Answer:           MAYBE
Input Problem:    innermost runtime-complexity with respect to
  Rules:
    {  gcd(x, 0()) -> x
     , gcd(0(), y) -> y
     , gcd(s(x), s(y)) ->
       if(<(x, y), gcd(s(x), -(y, x)), gcd(-(x, y), s(y)))}

Proof Output:    
  The input cannot be shown compatible