MAYBE

'epo* (timeout of 60.0 seconds)'
--------------------------------
Answer:           MAYBE
Input Problem:    innermost relative runtime-complexity with respect to
  Strict Rules: {f(a(), x) -> f(x, f(b(), x))}
  Weak Rules:
    {  f(f(x, y), z) -> f(x, f(y, z))
     , f(x, f(y, z)) -> f(f(x, y), z)}

Proof Output:    
  EPO* only applicable for innermost runtime complexity analysis of constructor TRSs