YES
by ttt2 (version ttt2 1.15)
The rewrite relation of the following TRS is considered.
| a(a(x0)) | → | b(b(b(x0))) | 
| a(x0) | → | d(c(d(x0))) | 
| b(b(b(x0))) | → | a(f(x0)) | 
| b(b(x0)) | → | c(c(c(x0))) | 
| c(c(x0)) | → | d(d(d(x0))) | 
| c(d(d(x0))) | → | f(x0) | 
| f(f(x0)) | → | f(a(x0)) | 
final states:
{15, 9, 13, 10, 8, 5, 1}
transitions:
| 157 | → | 85 | 
| 157 | → | 48 | 
| 111 | → | 4 | 
| 111 | → | 46 | 
| 32 | → | 16 | 
| 29 | → | 150 | 
| 103 | → | 45 | 
| 10 | → | 96 | 
| 10 | → | 47 | 
| 10 | → | 3 | 
| 97 | → | 116 | 
| 15 | → | 73 | 
| 15 | → | 17 | 
| 15 | → | 9 | 
| 15 | → | 34 | 
| 15 | → | 142 | 
| 15 | → | 151 | 
| 96 | → | 134 | 
| 84 | → | 46 | 
| 167 | → | 49 | 
| 122 | → | 15 | 
| 120 | → | 123 | 
| 3 | → | 47 | 
| 50 | → | 1 | 
| 108 | → | 138 | 
| 9 | → | 17 | 
| 9 | → | 7 | 
| 9 | → | 31 | 
| 9 | → | 81 | 
| 9 | → | 61 | 
| 9 | → | 11 | 
| 9 | → | 44 | 
| 34 | → | 73 | 
| 20 | → | 8 | 
| 99 | → | 49 | 
| 62 | → | 162 | 
| 1 | → | 16 | 
| 8 | → | 4 | 
| 8 | → | 96 | 
| 8 | → | 47 | 
| 8 | → | 3 | 
| 13 | → | 81 | 
| 13 | → | 61 | 
| 13 | → | 11 | 
| 13 | → | 44 | 
| 101 | → | 110 | 
| 60 | → | 12 | 
| 139 | → | 134 | 
| 44 | → | 81 | 
| 135 | → | 125 | 
| 76 | → | 1 | 
| 76 | → | 35 | 
| 58 | → | 108 | 
| 138 | → | 140 | 
| 171 | → | 12 | 
| 171 | → | 45 | 
| 6 | → | 170 | 
| 116 | → | 120 | 
| 109 | → | 10 | 
| 88 | → | 50 | 
| 143 | → | 134 | 
| 143 | → | 139 | 
| 117 | → | 1 | 
| 117 | → | 50 | 
| 2 | → | 29 | 
| 2 | → | 33 | 
| 2 | → | 43 | 
| 11 | → | 61 | 
| 12 | → | 154 | 
| 126 | → | 121 | 
| 30 | → | 58 | 
| 64 | → | 10 | 
| 46 | → | 4 | 
| 35 | → | 1 | 
| 48 | → | 85 | 
| 47 | → | 96 | 
| 43 | → | 100 | 
| 163 | → | 85 | 
| 163 | → | 48 | 
| 151 | → | 142 | 
| 155 | → | 166 | 
| f1(170) | → | 171 | 
| f1(108) | → | 109 | 
| f1(33) | → | 34 | 
| f1(121) | → | 122 | 
| c3(141) | → | 142 | 
| f2(162) | → | 163 | 
| f2(166) | → | 167 | 
| f2(116) | → | 117 | 
| f2(150) | → | 151 | 
| f2(110) | → | 111 | 
| f3(134) | → | 135 | 
| c2(124) | → | 125 | 
| c2(74) | → | 75 | 
| a0(9) | → | 8 | 
| a0(2) | → | 16 | 
| f0(2) | → | 9 | 
| f0(16) | → | 15 | 
| c0(11) | → | 12 | 
| c0(6) | → | 7 | 
| c0(12) | → | 10 | 
| c0(2) | → | 11 | 
| d1(19) | → | 20 | 
| d1(29) | → | 30 | 
| d1(17) | → | 18 | 
| d1(58) | → | 59 | 
| d1(61) | → | 62 | 
| d1(63) | → | 64 | 
| d1(59) | → | 60 | 
| d1(155) | → | 156 | 
| d1(156) | → | 157 | 
| d1(154) | → | 155 | 
| d1(31) | → | 32 | 
| d1(62) | → | 63 | 
| c1(48) | → | 49 | 
| c1(18) | → | 19 | 
| c1(49) | → | 50 | 
| c1(43) | → | 44 | 
| c1(45) | → | 46 | 
| c1(30) | → | 31 | 
| c1(44) | → | 45 | 
| c1(47) | → | 48 | 
| b0(3) | → | 4 | 
| b0(2) | → | 3 | 
| b0(4) | → | 1 | 
| d0(2) | → | 6 | 
| d0(6) | → | 14 | 
| d0(14) | → | 13 | 
| d0(7) | → | 5 | 
| d2(101) | → | 102 | 
| d2(98) | → | 99 | 
| d2(100) | → | 101 | 
| d2(102) | → | 103 | 
| d2(85) | → | 86 | 
| d2(75) | → | 76 | 
| d2(83) | → | 84 | 
| d2(73) | → | 74 | 
| d2(87) | → | 88 | 
| d2(82) | → | 83 | 
| d2(125) | → | 126 | 
| d2(123) | → | 124 | 
| d2(97) | → | 98 | 
| d2(81) | → | 82 | 
| d2(86) | → | 87 | 
| d2(96) | → | 97 | 
| a1(120) | → | 121 | 
| a1(34) | → | 35 | 
| d3(142) | → | 143 | 
| d3(140) | → | 141 | 
| f50 | → | 2 | 
| a2(138) | → | 139 |