(ignored inputs)COMMENT doi:10.1017/CBO9781139172752 [4] Example 6.2.7 submitted by: Takahito Aoto , Junichi Yoshida , and Yoshihito Toyama
Rewrite Rules:
   [ f(f(?x)) -> g(?x) ]
Apply Direct Methods...
Inner CPs:
   [ f(g(?x)) = g(f(?x)) ]
Outer CPs:
   [  ]
not Overlay, check Termination...
Terminating, not WCR
Knuth & Bendix
Direct Methods: not CR

Combined result: not CR
7.trs: Success(not CR)
NO
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