MAYBE
(ignored inputs)COMMENT [111] p. 29 ( GWCR & ~WCR & ~GCR )
input TRS:
   [ a -> b,
     a -> f(a,a),
     f(?x,a) -> a ]
TRS:
   [ a -> b,
     a -> f(a,a),
     f(?x,a) -> a ]
problems/507.trs: Failure(unknown UNC)
(0 msec.)