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:
    {  from(X) -> cons(X, n__from(n__s(X)))
     , length(n__nil()) -> 0()
     , length(n__cons(X, Y)) -> s(length1(activate(Y)))
     , length1(X) -> length(activate(X))
     , from(X) -> n__from(X)
     , s(X) -> n__s(X)
     , nil() -> n__nil()
     , cons(X1, X2) -> n__cons(X1, X2)
     , activate(n__from(X)) -> from(activate(X))
     , activate(n__s(X)) -> s(activate(X))
     , activate(n__nil()) -> nil()
     , activate(n__cons(X1, X2)) -> cons(activate(X1), X2)
     , activate(X) -> X}

Proof Output:    
  The input cannot be shown compatible