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
     , -(0(), s(y)) -> 0()
     , -(s(x), s(y)) -> -(x, y)
     , lt(x, 0()) -> false()
     , lt(0(), s(y)) -> true()
     , lt(s(x), s(y)) -> lt(x, y)
     , if(true(), x, y) -> x
     , if(false(), x, y) -> y
     , div(x, 0()) -> 0()
     , div(0(), y) -> 0()
     , div(s(x), s(y)) -> if(lt(x, y), 0(), s(div(-(x, y), s(y))))}

Proof Output:    
  The input cannot be shown compatible