(ignored inputs)COMMENT [20] Example 4.3.3 submitted by: Takahito Aoto , Junichi Yoshida , and Yoshihito Toyama
Rewrite Rules:
   [ F(c(?x)) -> G(?x),
     G(?x) -> F(?x),
     c(?x) -> ?x ]
Apply Direct Methods...
Inner CPs:
   [ F(?x_2) = G(?x_2) ]
Outer CPs:
   [  ]
not Overlay, check Termination...
Terminating, WCR
Knuth & Bendix
Direct Methods: CR

Combined result: CR
72.trs: Success(CR)
YES
(4 msec.)