MAYBE
(ignored inputs)COMMENT addition + commutative law
Rewrite Rules:
   [ +(?x,0) -> ?x,
     +(?x,s(?y)) -> s(+(?x,?y)),
     +(?x,?y) -> +(?y,?x) ]
Apply Direct Methods...
Inner CPs:
   [  ]
Outer CPs:
   [ ?x = +(0,?x),
     s(+(?x_1,?y_1)) = +(s(?y_1),?x_1) ]
Linear
(inner) Parallel CPs: (not computed)
unknown Toyama (Parallel CPs)
Direct Methods: Can't judge

Combined result: Can't judge
106.trs: Failure(unknown CR)
(0 msec.)