YES
(ignored inputs)COMMENT Cops #647 - #721: generated ground TRSs; evenly distributed in the UNR/UNC/NFP/CR hierarchy submitted by: Bertram Felgenhauer
Rewrite Rules:
   [ f(b) -> c,
     c -> c,
     f(c) -> b,
     a -> b ]
Apply Direct Methods...
Inner CPs:
   [ f(c) = b ]
Outer CPs:
   [  ]
Linear
(inner) Parallel CPs:
   [ f(c) = b {} ]
Toyama (Parallel CPs)
Direct Methods: CR

Combined result: CR
662.trs: Success(CR)
(0 msec.)