MAYBE

'Pop* (timeout of 60.0 seconds)'
--------------------------------
Answer:           MAYBE
Input Problem:    innermost runtime-complexity with respect to
  Rules:
    {  plus(0(), x) -> x
     , plus(s(x), y) -> s(plus(p(s(x)), y))
     , times(0(), y) -> 0()
     , times(s(x), y) -> plus(y, times(p(s(x)), y))
     , exp(x, 0()) -> s(0())
     , exp(x, s(y)) -> times(x, exp(x, y))
     , p(s(0())) -> 0()
     , p(s(s(x))) -> s(p(s(x)))
     , tower(x, y) -> towerIter(x, y, s(0()))
     , towerIter(0(), y, z) -> z
     , towerIter(s(x), y, z) -> towerIter(p(s(x)), y, exp(y, z))}

Proof Output:    
  The input cannot be shown compatible