MAYBE
(ignored inputs)COMMENT [111] p. 30 ( GUN & ~UN & ~GUNC )
Rewrite Rules:
   [ b -> a,
     b -> c,
     c -> c,
     d -> c,
     d -> e,
     f(?x,a) -> A,
     f(?x,e) -> A,
     f(?x,A) -> A,
     f(c,?x) -> A ]
Apply Direct Methods...
Inner CPs:
   [ f(c,?x_3) = A ]
Outer CPs:
   [ a = c,
     c = e,
     A = A,
     A = A,
     A = A ]
Linear
(inner) Parallel CPs: (not computed)
unknown Toyama (Parallel CPs)
Direct Methods: Can't judge

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