YES
(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)) ]
confluent TRS:
   [ c -> f(c),
     c -> f(h(a)),
     f(?x) -> h(f(?x)),
     f(h(a)) -> f(c) ]
UNC Completion (Development Closed)
problems/253.trs: Success(UNC)
(4 msec.)