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:
    {  plus(0(), x) -> x
     , plus(s(x), y) -> s(plus(x, y))
     , times(0(), y) -> 0()
     , times(s(x), y) -> plus(y, times(x, y))
     , exp(x, 0()) -> s(0())
     , exp(x, s(y)) -> times(x, exp(x, y))
     , ge(x, 0()) -> true()
     , ge(0(), s(x)) -> false()
     , ge(s(x), s(y)) -> ge(x, y)
     , tower(x, y) -> towerIter(0(), x, y, s(0()))
     , towerIter(c, x, y, z) -> help(ge(c, x), c, x, y, z)
     , help(true(), c, x, y, z) -> z
     , help(false(), c, x, y, z) -> towerIter(s(c), x, y, exp(y, z))}

Proof Output:    
  The input cannot be shown compatible