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

Make it flat:
   [ h(!cl_12,!cl_13) -> c,
     !cl_13 -> !cl_13,
     h(a,c) -> !cl_13,
     !cl_11 -> !cl_11,
     f(!cl_9) -> !cl_11,
     !cl_9 -> !cl_9,
     h(!cl_7,c) -> !cl_9,
     h(!cl_5,a) -> !cl_7,
     f(a) -> !cl_5,
     !cl_3 -> !cl_3,
     f(!cl_1) -> !cl_3,
     !cl_1 -> !cl_1,
     f(c) -> !cl_1,
     f(b) -> !cl_0,
     !cr_0 -> f(b),
     !cr_1 -> h(c,!cr_0),
     !cr_2 -> f(!cr_1),
     !cr_3 -> h(!cr_2,a),
     !cr_4 -> h(c,!cr_3),
     !cr_5 -> h(!cr_4,b),
     !cr_6 -> h(!cr_5,c),
     h(c,!cl_1) -> !cl_2,
     !cl_2 -> !cl_2,
     f(!cl_2) -> !cl_4,
     !cl_4 -> !cl_4,
     h(!cl_3,b) -> f(!cr_6),
     c -> c,
     !cr_7 -> f(c),
     !cr_8 -> h(!cr_7,b),
     h(!cl_4,b) -> !cl_6,
     !cl_6 -> !cl_6,
     h(!cl_6,a) -> !cl_8,
     !cl_8 -> !cl_8,
     h(!cl_0,!cl_8) -> !cl_10,
     !cl_10 -> !cl_10,
     f(!cl_10) -> !cl_12,
     !cl_12 -> !cl_12,
     f(!cl_11) -> f(!cr_8) ]
Time: 0.004 [s]

Make it Complete (R^):
   [ h(!cl_12,!cl_13) = c,
     h(a,c) = !cl_13,
     f(!cl_9) = !cl_11,
     h(!cl_7,c) = !cl_9,
     h(!cl_5,a) = !cl_7,
     f(a) = !cl_5,
     f(!cr_7) = f(!cl_1),
     f(!cr_7) = !cl_3,
     f(!cl_1) = !cl_3,
     h(!cl_1,b) = h(!cr_7,b),
     h(!cl_1,b) = !cr_8,
     h(c,!cr_7) = h(c,!cl_1),
     h(c,!cr_7) = !cl_2,
     !cl_1 = !cr_7,
     f(c) = !cl_1,
     h(c,!cl_0) = h(c,!cr_0),
     h(c,!cl_0) = !cr_1,
     h(!cr_0,!cl_8) = h(!cl_0,!cl_8),
     h(!cr_0,!cl_8) = !cl_10,
     !cl_0 = !cr_0,
     f(b) = !cl_0,
     !cr_0 = f(b),
     !cr_1 = h(c,!cr_0),
     !cr_2 = f(!cr_1),
     !cr_3 = h(!cr_2,a),
     !cr_4 = h(c,!cr_3),
     !cr_5 = h(!cr_4,b),
     !cr_6 = h(!cr_5,c),
     h(c,!cl_1) = !cl_2,
     f(!cl_2) = !cl_4,
     h(!cl_3,b) = f(!cr_6),
     !cr_7 = f(c),
     !cr_8 = h(!cr_7,b),
     h(!cl_4,b) = !cl_6,
     h(!cl_6,a) = !cl_8,
     h(!cl_0,!cl_8) = !cl_10,
     f(!cl_10) = !cl_12,
     f(!cl_11) = f(!cr_8) ]
Time: 0.006 [s]

CPNF:
   [ !cl_7 … !cl_7,
     !cl_5 … !cl_5,
     b … b,
     a … a,
     !cl_0 … !cl_0 ]
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: 0.014 [s]

problems/690.trs: Success(UNC)
real 0.04
user 0.02
sys 0.01