(ignored inputs)COMMENT submitted by: Yusuke Oi used by secret problem 2019 COPS #1130
Rewrite Rules:
   [ +(0,?x) -> ?x,
     +(s(?x),?y) -> s(+(?x,?y)) ]
Apply Direct Methods...
Inner CPs:
   [  ]
Outer CPs:
   [  ]
Overlay, check Innermost Termination...
Innermost Terminating (hence Terminating), WCR
Knuth & Bendix
Direct Methods: CR

Combined result: CR
1129.trs: Success(CR)
YES
(5 msec.)