MAYBE
(ignored inputs)COMMENT doi:10.4230/LIPIcs.FSCD.2016.33 [36] Example 23 submitted by: Takahito Aoto
Rewrite Rules:
   [ +(0,?y) -> ?y,
     +(s(?x),?y) -> s(+(?x,?y)),
     +(?x,0) -> +(0,?x),
     +(?x,s(?y)) -> +(s(?y),?x) ]
Apply Direct Methods...
Inner CPs:
   [  ]
Outer CPs:
   [ 0 = +(0,0),
     s(?y_3) = +(s(?y_3),0),
     s(+(?x_1,0)) = +(0,s(?x_1)),
     s(+(?x_1,s(?y_3))) = +(s(?y_3),s(?x_1)) ]
Linear
(inner) Parallel CPs: (not computed)
unknown Toyama (Parallel CPs)
Direct Methods: Can't judge

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