MAYBE

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

Proof Output:    
  The input cannot be shown compatible