MAYBE
(ignored inputs)COMMENT doi:10.4230/LIPIcs.RTA.2012.165 [37] Section 4 ( R_64 )
input TRS:
   [ a -> b,
     a -> f(a),
     b -> f(f(b)),
     f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(b)))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))) -> b ]
TRS:
   [ a -> b,
     a -> f(a),
     b -> f(f(b)),
     f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(b)))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))) -> b ]
New rules by rule reversing:
   [ a -> b,
     f(a) -> a,
     b -> b,
     f(f(b)) -> b,
     f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(f(b)))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))) -> b ]
problems/214.trs: Failure(unknown UNC)
(0 msec.)