NO
(ignored inputs)COMMENT [111] p. 29 ( GNFP & ~NFP & ~GCR )
input TRS:
   [ a -> b,
     f(b,b) -> f(a,a),
     f(?x,a) -> f(a,a) ]
TRS:
   [ a -> b,
     f(b,b) -> f(a,a),
     f(?x,a) -> f(a,a) ]
Check distinct normal forms in critical pair closure
convertible distinct normal forms: f(?x,b) = f(?x_1,b)
problems/509.trs: Success(not UNC)
(4 msec.)