MAYBE
(ignored inputs)COMMENT [14] p. 209 submitted by: Takahito Aoto , Junichi Yoshida , and Yoshihito Toyama
input TRS:
   [ Ap(Ap(Ap(S,?x),?y),?z) -> Ap(Ap(?x,?z),Ap(?y,?z)),
     Ap(Ap(K,?x),?y) -> ?x,
     Ap(I,?x) -> ?x,
     Ap(Ap(Ap(B,true),?x),?y) -> ?x,
     Ap(Ap(Ap(B,false),?x),?y) -> ?y,
     Ap(Ap(Ap(B,?z),?x),?x) -> ?x ]
TRS:
   [ Ap(Ap(Ap(S,?x),?y),?z) -> Ap(Ap(?x,?z),Ap(?y,?z)),
     Ap(Ap(K,?x),?y) -> ?x,
     Ap(I,?x) -> ?x,
     Ap(Ap(Ap(B,true),?x),?y) -> ?x,
     Ap(Ap(Ap(B,false),?x),?y) -> ?y,
     Ap(Ap(Ap(B,?z),?x),?x) -> ?x ]
Check distinct normal forms in critical pair closure...failed
problems/52.trs: Failure(unknown UNC)
(4 msec.)