MAYBE

'epo* (timeout of 60.0 seconds)'
--------------------------------
Answer:           MAYBE
Input Problem:    innermost runtime-complexity with respect to
  Rules:
    {  f(n__f(n__a())) -> f(n__g(n__f(n__a())))
     , f(X) -> n__f(X)
     , a() -> n__a()
     , g(X) -> n__g(X)
     , activate(n__f(X)) -> f(X)
     , activate(n__a()) -> a()
     , activate(n__g(X)) -> g(activate(X))
     , activate(X) -> X}

Proof Output:    
  The input cannot be shown compatible