MAYBE
(ignored inputs)COMMENT doi:10.4230/LIPIcs.RTA.2015.257 [81] Example 1
Rewrite Rules:
   [ f(f(?x)) -> ?x,
     f(?x) -> f(f(?x)) ]
Apply Direct Methods...
Inner CPs:
   [ f(f(f(?x_1))) = ?x_1,
     f(?x) = f(?x) ]
Outer CPs:
   [ ?x = f(f(f(?x))) ]
Linear
(inner) Parallel CPs: (not computed)
unknown Toyama (Parallel CPs)
Direct Methods: Can't judge

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