MAYBE (ignored inputs)COMMENT from experiments for [44] submitted by: Tsubasa Suzuki , Takahito Aoto , and Yoshihito Toyama input TRS: [ c -> f(c), c -> f(h(a)), f(?x) -> h(f(?x)) ] TRS: [ c -> f(c), c -> f(h(a)), f(?x) -> h(f(?x)) ] Check distinct normal forms in critical pair closure...failed problems/253.trs: Failure(unknown UNC) (4 msec.)