YES(?,POLY)

'Pop* (timeout of 60.0 seconds)'
--------------------------------
Answer:           YES(?,POLY)
Input Problem:    innermost runtime-complexity with respect to
  Rules: {f(g(x), y, y) -> g(f(x, x, y))}

Proof Output:    
  The input was oriented with the instance of POP* as induced by the precedence
  
   empty
  
  and safe mapping
  
   safe(f) = {3}, safe(g) = {1} .
  
  For your convenience, here is the input in predicative notation:
  
   Rules:
    {f(g(; x), y; y) -> g(; f(x, x; y))}