MAYBE
(ignored inputs)SIG ( f 2 ) ( a 0 ) ( b 0 ) ( c 0 ) COMMENT [111] Example 1 with additional constant c submitted by: Franziska Rapp
Rewrite Rules:
   [ a -> b,
     f(?x,a) -> f(b,b),
     f(b,?x) -> f(b,b),
     f(f(?x,?y),?z) -> f(b,b) ]
Apply Direct Methods...
Inner CPs:
   [ f(?x,b) = f(b,b),
     f(f(b,b),?z_2) = f(b,b),
     f(f(b,b),?z_2) = f(b,b),
     f(f(b,b),?z_1) = f(b,b) ]
Outer CPs:
   [ f(b,b) = f(b,b),
     f(b,b) = f(b,b) ]
Linear
(inner) Parallel CPs: (not computed)
unknown Toyama (Parallel CPs)
Direct Methods: Can't judge

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