MAYBE
(ignored inputs)COMMENT [111] p. 29 ( GCR & ~CR & ~GSCR )
input TRS:
   [ a -> b,
     b -> f(a,a),
     f(?x,a) -> b ]
TRS:
   [ a -> b,
     b -> f(a,a),
     f(?x,a) -> b ]
Check distinct normal forms in critical pair closure...failed
problems/508.trs: Failure(unknown UNC)
(4 msec.)