MAYBE

'Pop* (timeout of 60.0 seconds)'
--------------------------------
Answer:           MAYBE
Input Problem:    innermost runtime-complexity with respect to
  Rules:
    {  f(g(X), Y) -> f(X, n__f(g(X), activate(Y)))
     , f(X1, X2) -> n__f(X1, X2)
     , activate(n__f(X1, X2)) -> f(X1, X2)
     , activate(X) -> X}

Proof Output:    
  The input cannot be shown compatible
The following warning(s) occured:

 Warning when parsing problem:
   Unsupported strategy 'OUTERMOST'