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:
    {  +(x, 0()) -> x
     , +(x, s(y)) -> s(+(x, y))
     , *(x, 0()) -> 0()
     , *(x, s(y)) -> +(*(x, y), x)
     , ge(x, 0()) -> true()
     , ge(0(), s(y)) -> false()
     , ge(s(x), s(y)) -> ge(x, y)
     , -(x, 0()) -> x
     , -(s(x), s(y)) -> -(x, y)
     , fact(x) -> iffact(x, ge(x, s(s(0()))))
     , iffact(x, true()) -> *(x, fact(-(x, s(0()))))
     , iffact(x, false()) -> s(0())}

Proof Output:    
  The input cannot be shown compatible