MAYBE (ignored inputs)COMMENT from experiments for [44] submitted by: Tsubasa Suzuki , Takahito Aoto , and Yoshihito Toyama input TRS: [ c -> f(c), c -> h(c), f(?x) -> f(f(?x)), h(?x) -> h(h(?x)) ] TRS: [ c -> f(c), c -> h(c), f(?x) -> f(f(?x)), h(?x) -> h(h(?x)) ] Check distinct normal forms in critical pair closure...failed problems/258.trs: Failure(unknown UNC) (4 msec.)