MAYBE
(ignored inputs)COMMENT Cops #647 - #721: generated ground TRSs; evenly distributed in the UNR/UNC/NFP/CR hierarchy submitted by: Bertram Felgenhauer
input TRS:
   [ b -> f(h(f(f(b)),c)),
     h(h(c,c),b) -> c,
     h(f(a),b) -> b ]
TRS:
   [ b -> f(h(f(f(b)),c)),
     h(h(c,c),b) -> c,
     h(f(a),b) -> b ]
New rules by rule reversing:
   [ b -> b,
     f(h(f(f(b)),c)) -> b,
     h(h(c,c),b) -> c,
     h(f(a),b) -> b ]
Check distinct normal forms in critical pair closure...failed
problems/661.trs: Failure(unknown UNC)
(0 msec.)