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

Make it flat:
   [ b -> h(b,a),
     !cr_0 -> f(b),
     !cr_1 -> h(b,a),
     !cr_2 -> f(!cr_1),
     b -> h(!cr_0,!cr_2) ]
Time: 0.000 [s]

Make it Complete (R^):
   [ f(b) = !cr_2,
     h(!cr_1,a) = !cr_1,
     f(!cr_1) = f(b),
     h(!cr_0,!cr_0) = b,
     h(!cr_0,!cr_0) = h(b,a),
     h(!cr_0,!cr_0) = !cr_1,
     h(!cr_0,!cr_0) = h(!cr_1,a),
     h(!cr_2,!cr_2) = b,
     h(!cr_2,!cr_2) = h(b,a),
     h(!cr_2,!cr_2) = !cr_1,
     h(!cr_2,!cr_0) = h(!cr_1,a),
     h(!cr_0,!cr_0) = h(!cr_2,!cr_2),
     h(!cr_0,!cr_0) = h(!cr_2,!cr_0),
     h(!cr_2,!cr_2) = h(!cr_2,!cr_0),
     h(!cr_0,!cr_0) = h(!cr_0,!cr_2),
     h(!cr_2,!cr_0) = b,
     h(!cr_2,!cr_0) = h(b,a),
     h(!cr_2,!cr_0) = !cr_1,
     h(!cr_2,!cr_0) = h(!cr_0,!cr_2),
     h(!cr_2,!cr_2) = h(!cr_0,!cr_2),
     h(!cr_2,!cr_2) = h(!cr_1,a),
     !cr_0 = !cr_2,
     f(!cr_1) = !cr_0,
     h(!cr_1,a) = b,
     h(!cr_1,a) = h(b,a),
     h(!cr_1,a) = h(!cr_0,!cr_2),
     b = !cr_1,
     h(!cr_0,!cr_2) = !cr_1,
     h(b,a) = h(!cr_0,!cr_2),
     b = h(b,a),
     !cr_0 = f(b),
     !cr_1 = h(b,a),
     !cr_2 = f(!cr_1),
     b = h(!cr_0,!cr_2) ]
Time: 0.018 [s]

CPNF:
   [ a … a ]
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: 0.019 [s]

problems/721.trs: Success(UNC)
real 0.04
user 0.03
sys 0.01