YES(?,POLY)

'Pop* with parameter subtitution (timeout of 60.0 seconds)'
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Answer:           YES(?,POLY)
Input Problem:    innermost runtime-complexity with respect to
  Rules:
    {  +(0(), y) -> y
     , +(s(x), y) -> s(+(x, y))
     , +(s(x), y) -> +(x, s(y))}

Proof Output:    
  The input was oriented with the instance of POP* as induced by the precedence
  
   empty
  
  and safe mapping
  
   safe(+) = {2}, safe(0) = {}, safe(s) = {1} .
  
  For your convenience, here is the input in predicative notation:
  
   Rules:
    {  +(0(); y) -> y
     , +(s(; x); y) -> s(; +(x; y))
     , +(s(; x); y) -> +(x; s(; y))}