YES
by ttt2 (version ttt2 1.15)
The rewrite relation of the following TRS is considered.
| a(a(a(a(x0)))) | → | a(a(b(b(b(b(b(b(x0)))))))) |
| b(b(a(a(x0)))) | → | b(b(b(b(c(c(x0)))))) |
| a(a(b(b(b(b(c(c(x0)))))))) | → | a(a(a(a(a(a(b(b(x0)))))))) |
final states:
{16, 10, 1}
transitions:
| 157 | → | 19 |
| 322 | → | 167 |
| 376 | → | 124 |
| 102 | → | 164 |
| 102 | → | 304 |
| 102 | → | 346 |
| 128 | → | 224 |
| 128 | → | 232 |
| 128 | → | 327 |
| 128 | → | 370 |
| 103 | → | 58 |
| 103 | → | 18 |
| 103 | → | 275 |
| 103 | → | 113 |
| 103 | → | 99 |
| 98 | → | 122 |
| 98 | → | 252 |
| 10 | → | 80 |
| 10 | → | 4 |
| 10 | → | 3 |
| 10 | → | 295 |
| 10 | → | 97 |
| 10 | → | 96 |
| 274 | → | 24 |
| 274 | → | 168 |
| 387 | → | 168 |
| 387 | → | 24 |
| 97 | → | 166 |
| 97 | → | 295 |
| 129 | → | 218 |
| 129 | → | 283 |
| 129 | → | 319 |
| 211 | → | 50 |
| 119 | → | 216 |
| 119 | → | 281 |
| 119 | → | 306 |
| 119 | → | 348 |
| 276 | → | 269 |
| 299 | → | 123 |
| 18 | → | 58 |
| 227 | → | 150 |
| 120 | → | 210 |
| 120 | → | 298 |
| 120 | → | 344 |
| 57 | → | 21 |
| 333 | → | 368 |
| 333 | → | 406 |
| 333 | → | 410 |
| 225 | → | 150 |
| 347 | → | 253 |
| 219 | → | 23 |
| 209 | → | 50 |
| 130 | → | 102 |
| 99 | → | 113 |
| 99 | → | 275 |
| 305 | → | 123 |
| 165 | → | 50 |
| 101 | → | 158 |
| 101 | → | 184 |
| 101 | → | 321 |
| 334 | → | 359 |
| 334 | → | 397 |
| 416 | → | 329 |
| 297 | → | 170 |
| 343 | → | 328 |
| 79 | → | 59 |
| 201 | → | 114 |
| 251 | → | 233 |
| 407 | → | 253 |
| 172 | → | 200 |
| 172 | → | 268 |
| 172 | → | 381 |
| 173 | → | 226 |
| 173 | → | 239 |
| 173 | → | 336 |
| 121 | → | 18 |
| 121 | → | 103 |
| 337 | → | 328 |
| 345 | → | 253 |
| 174 | → | 101 |
| 82 | → | 26 |
| 2 | → | 95 |
| 4 | → | 22 |
| 4 | → | 80 |
| 28 | → | 78 |
| 258 | → | 151 |
| 258 | → | 329 |
| 284 | → | 185 |
| 369 | → | 123 |
| 66 | → | 16 |
| 100 | → | 149 |
| 100 | → | 250 |
| 100 | → | 342 |
| 335 | → | 100 |
| 282 | → | 185 |
| 217 | → | 23 |
| 30 | → | 20 |
| 240 | → | 233 |
| 17 | → | 49 |
| 190 | → | 60 |
| 190 | → | 115 |
| 360 | → | 114 |
| 398 | → | 382 |
| 159 | → | 23 |
| 320 | → | 167 |
| 203 | → | 59 |
| 354 | → | 115 |
| 155 | → | 208 |
| 156 | → | 202 |
| 238 | → | 51 |
| 238 | → | 124 |
| 307 | → | 167 |
| c3(371) | → | 372 |
| c3(411) | → | 412 |
| c3(410) | → | 411 |
| c3(381) | → | 382 |
| c3(370) | → | 371 |
| c3(349) | → | 350 |
| c3(348) | → | 349 |
| c3(382) | → | 383 |
| c1(80) | → | 81 |
| c1(81) | → | 82 |
| b2(331) | → | 332 |
| b2(255) | → | 256 |
| b2(235) | → | 236 |
| b2(117) | → | 118 |
| b2(188) | → | 189 |
| b2(124) | → | 125 |
| b2(113) | → | 114 |
| b2(167) | → | 168 |
| b2(186) | → | 187 |
| b2(319) | → | 320 |
| b2(234) | → | 235 |
| b2(115) | → | 116 |
| b2(254) | → | 255 |
| b2(336) | → | 337 |
| b2(114) | → | 115 |
| b2(123) | → | 124 |
| b2(332) | → | 333 |
| b2(187) | → | 188 |
| b2(329) | → | 330 |
| b2(270) | → | 271 |
| b2(321) | → | 322 |
| b2(126) | → | 127 |
| b2(298) | → | 299 |
| b2(125) | → | 126 |
| b2(342) | → | 343 |
| b2(359) | → | 360 |
| b2(200) | → | 201 |
| b2(273) | → | 274 |
| b2(169) | → | 170 |
| b2(118) | → | 119 |
| b2(257) | → | 258 |
| b2(236) | → | 237 |
| b2(116) | → | 117 |
| b2(304) | → | 305 |
| b2(170) | → | 171 |
| b2(306) | → | 307 |
| b2(168) | → | 169 |
| b2(330) | → | 331 |
| b2(256) | → | 257 |
| b2(166) | → | 167 |
| b2(328) | → | 329 |
| b2(327) | → | 328 |
| b2(271) | → | 272 |
| b2(189) | → | 190 |
| b2(237) | → | 238 |
| b2(127) | → | 128 |
| b2(368) | → | 369 |
| b2(171) | → | 172 |
| b2(122) | → | 123 |
| b2(272) | → | 273 |
| b1(226) | → | 227 |
| b1(151) | → | 152 |
| b1(23) | → | 24 |
| b1(150) | → | 151 |
| b1(26) | → | 27 |
| b1(218) | → | 219 |
| b1(78) | → | 79 |
| b1(216) | → | 217 |
| b1(63) | → | 64 |
| b1(59) | → | 60 |
| b1(58) | → | 59 |
| b1(51) | → | 52 |
| b1(210) | → | 211 |
| b1(95) | → | 96 |
| b1(60) | → | 61 |
| b1(152) | → | 153 |
| b1(149) | → | 150 |
| b1(158) | → | 159 |
| b1(202) | → | 203 |
| b1(164) | → | 165 |
| b1(154) | → | 155 |
| b1(25) | → | 26 |
| b1(54) | → | 55 |
| b1(96) | → | 97 |
| b1(50) | → | 51 |
| b1(208) | → | 209 |
| b1(61) | → | 62 |
| b1(224) | → | 225 |
| b1(27) | → | 28 |
| b1(49) | → | 50 |
| b1(53) | → | 54 |
| b1(62) | → | 63 |
| b1(153) | → | 154 |
| b1(24) | → | 25 |
| b1(22) | → | 23 |
| b1(52) | → | 53 |
| f30 | → | 2 |
| a0(20) | → | 21 |
| a0(17) | → | 18 |
| a0(9) | → | 1 |
| a0(8) | → | 9 |
| a0(19) | → | 20 |
| a0(21) | → | 16 |
| a0(18) | → | 19 |
| a0(4) | → | 17 |
| c2(283) | → | 284 |
| c2(296) | → | 297 |
| c2(406) | → | 407 |
| c2(397) | → | 398 |
| c2(344) | → | 345 |
| c2(281) | → | 282 |
| c2(269) | → | 270 |
| c2(184) | → | 185 |
| c2(295) | → | 296 |
| c2(275) | → | 276 |
| c2(239) | → | 240 |
| c2(232) | → | 233 |
| c2(346) | → | 347 |
| c2(185) | → | 186 |
| c2(250) | → | 251 |
| c2(233) | → | 234 |
| c2(268) | → | 269 |
| c2(253) | → | 254 |
| c2(252) | → | 253 |
| a2(333) | → | 334 |
| a2(128) | → | 129 |
| a2(172) | → | 173 |
| a2(120) | → | 121 |
| a2(173) | → | 174 |
| a2(119) | → | 120 |
| a2(334) | → | 335 |
| a2(129) | → | 130 |
| c0(11) | → | 12 |
| c0(2) | → | 11 |
| a1(28) | → | 29 |
| a1(56) | → | 57 |
| a1(156) | → | 157 |
| a1(65) | → | 66 |
| a1(98) | → | 99 |
| a1(64) | → | 65 |
| a1(99) | → | 100 |
| a1(55) | → | 56 |
| a1(155) | → | 156 |
| a1(100) | → | 101 |
| a1(29) | → | 30 |
| a1(101) | → | 102 |
| a1(97) | → | 98 |
| a1(102) | → | 103 |
| b3(383) | → | 384 |
| b3(372) | → | 373 |
| b3(374) | → | 375 |
| b3(415) | → | 416 |
| b3(386) | → | 387 |
| b3(413) | → | 414 |
| b3(353) | → | 354 |
| b3(385) | → | 386 |
| b3(412) | → | 413 |
| b3(384) | → | 385 |
| b3(414) | → | 415 |
| b3(351) | → | 352 |
| b3(375) | → | 376 |
| b3(350) | → | 351 |
| b3(373) | → | 374 |
| b3(352) | → | 353 |
| b0(15) | → | 10 |
| b0(6) | → | 7 |
| b0(13) | → | 14 |
| b0(5) | → | 6 |
| b0(14) | → | 15 |
| b0(12) | → | 13 |
| b0(2) | → | 3 |
| b0(3) | → | 4 |
| b0(4) | → | 5 |
| b0(7) | → | 8 |