MAYBE

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

Proof Output:    
  The input cannot be shown compatible