YES
(ignored inputs)COMMENT Cops #647 - #721: generated ground TRSs; evenly distributed in the UNR/UNC/NFP/CR hierarchy submitted by: Bertram Felgenhauer
Input:
   [ f(h(b,a)) -> a,
     f(f(f(c))) -> c,
     b -> c,
     c -> c,
     a -> a ]

Make it flat:
   [ f(!cl_2) -> c,
     f(!cl_1) -> a,
     !cl_2 -> !cl_2,
     f(!cl_0) -> !cl_2,
     !cl_0 -> !cl_0,
     f(c) -> !cl_0,
     a -> a,
     c -> c,
     b -> c,
     h(b,a) -> !cl_1,
     !cl_1 -> !cl_1 ]
Time: 0.000 [s]

Make it Complete (R^):
   [ b = f(!cl_2),
     f(!cl_2) = c,
     f(!cl_1) = a,
     f(!cl_0) = !cl_2,
     f(b) = f(c),
     f(b) = !cl_0,
     f(c) = !cl_0,
     h(c,a) = h(b,a),
     h(c,a) = !cl_1,
     b = c,
     h(b,a) = !cl_1 ]
Time: 0.001 [s]

CPNF:
   [  ]
Time: 0.000 [s]

Now checking all the pairs in CW...

Time to check pairs: 0.000 [s]

The TRS has Uniqueness of Normal Forms.
Total Time: 0.002 [s]

problems/683.trs: Success(UNC)
real 0.04
user 0.02
sys 0.01