MAYBE
(ignored inputs)COMMENT Cops #647 - #721: generated ground TRSs; evenly distributed in the UNR/UNC/NFP/CR hierarchy submitted by: Bertram Felgenhauer
Rewrite Rules:
   [ a -> c,
     f(f(c)) -> h(a,h(h(c,c),b)),
     f(f(a)) -> b,
     b -> f(f(b)) ]
Apply Direct Methods...
Inner CPs:
   [ f(f(c)) = b ]
Outer CPs:
   [  ]
Linear
(inner) Parallel CPs: (not computed)
unknown Toyama (Parallel CPs)
Direct Methods: Can't judge

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