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:
   [ c -> h(c,c),
     f(c) -> c,
     f(b) -> b,
     a -> b,
     a -> h(h(a,a),h(c,b)) ]
TRS:
   [ c -> h(c,c),
     f(c) -> c,
     f(b) -> b,
     a -> b,
     a -> h(h(a,a),h(c,b)) ]
Check distinct normal forms in critical pair closure...failed
problems/688.trs: Failure(unknown UNC)
(16 msec.)