YES
Time: 0.015

Problem:
 Equations:
  
 TRS:
  plusAC(x,0()) -> x
  plusAC(x,s(y)) -> s(plusAC(x,y))
  double(x) -> plusAC(x,x)

Proof:
 AC-RPO Processor:
  precedence:
   double > plusAC > s > 0
  status:
   
  problem:
   Equations:
    
   TRS:
    
  Qed