MAYBE

'Pop* with parameter subtitution (timeout of 60.0 seconds)'
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Answer:           MAYBE
Input Problem:    innermost runtime-complexity with respect to
  Rules:
    {  intlist(nil()) -> nil()
     , intlist(cons(x, y)) -> cons(s(x), intlist(y))
     , int(0(), 0()) -> cons(0(), nil())
     , int(0(), s(y)) -> cons(0(), int(s(0()), s(y)))
     , int(s(x), 0()) -> nil()
     , int(s(x), s(y)) -> intlist(int(x, y))}

Proof Output:    
  The input cannot be shown compatible