MAYBE
(ignored inputs)COMMENT doi:10.1017/CBO9781139172752 [4] Exercise 6.5 ( f ) submitted by: Takahito Aoto , Junichi Yoshida , and Yoshihito Toyama
input TRS:
   [ f(?x,f(?y,?z)) -> f(f(?x,?y),f(?x,?z)),
     f(f(?x,?y),?z) -> f(f(?x,?z),f(?y,?z)),
     f(f(?x,?y),f(?y,?z)) -> ?y ]
TRS:
   [ f(?x,f(?y,?z)) -> f(f(?x,?y),f(?x,?z)),
     f(f(?x,?y),?z) -> f(f(?x,?z),f(?y,?z)),
     f(f(?x,?y),f(?y,?z)) -> ?y ]
New rules by rule reversing:
   [ f(?x,f(?y,?z)) -> f(?x,f(?y,?z)),
     f(f(?x,?y),f(?x,?z)) -> f(?x,f(?y,?z)),
     f(f(?x,?y),?z) -> f(f(?x,?y),?z),
     f(f(?x,?z),f(?y,?z)) -> f(f(?x,?y),?z),
     f(f(?x,?y),f(?y,?z)) -> ?y ]
unknown UNC Completion (Development Closed)
problems/15.trs: Failure(unknown UNC)
(0 msec.)