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:
    {  p(s(x)) -> x
     , fac(0()) -> s(0())
     , fac(s(x)) -> times(s(x), fac(p(s(x))))}

Proof Output:    
  The input cannot be shown compatible