YES Problem: 0(1(2(1(x1)))) -> 1(2(1(1(0(1(2(0(1(2(x1)))))))))) 0(1(2(1(x1)))) -> 1(2(1(1(0(1(2(0(1(2(0(1(2(x1))))))))))))) 0(1(2(1(x1)))) -> 1(2(1(1(0(1(2(0(1(2(0(1(2(0(1(2(x1)))))))))))))))) 0(1(2(1(x1)))) -> 1(2(1(1(0(1(2(0(1(2(0(1(2(0(1(2(0(1(2(x1))))))))))))))))))) Proof: String Reversal Processor: 1(2(1(0(x1)))) -> 2(1(0(2(1(0(1(1(2(1(x1)))))))))) 1(2(1(0(x1)))) -> 2(1(0(2(1(0(2(1(0(1(1(2(1(x1))))))))))))) 1(2(1(0(x1)))) -> 2(1(0(2(1(0(2(1(0(2(1(0(1(1(2(1(x1)))))))))))))))) 1(2(1(0(x1)))) -> 2(1(0(2(1(0(2(1(0(2(1(0(2(1(0(1(1(2(1(x1))))))))))))))))))) Bounds Processor: bound: 3 enrichment: match automaton: final states: {4} transitions: 23(157) -> 158* 23(142) -> 143* 23(154) -> 155* 23(149) -> 150* 23(139) -> 140* 23(134) -> 135* 23(119) -> 120* 23(116) -> 117* 23(111) -> 112* 21(25) -> 26* 21(22) -> 23* 21(17) -> 18* 13(127) -> 128* 13(112) -> 113* 13(144) -> 145* 13(156) -> 157* 13(151) -> 152* 13(141) -> 142* 13(136) -> 137* 13(121) -> 122* 13(153) -> 154* 13(148) -> 149* 13(138) -> 139* 13(133) -> 134* 13(118) -> 119* 13(113) -> 114* 13(150) -> 151* 13(135) -> 136* 13(115) -> 116* 13(110) -> 111* 11(24) -> 25* 11(19) -> 20* 11(21) -> 22* 11(16) -> 17* 11(48) -> 49* 11(33) -> 34* 11(18) -> 19* 03(152) -> 153* 03(137) -> 138* 03(117) -> 118* 03(159) -> 160* 03(129) -> 130* 03(114) -> 115* 03(146) -> 147* 03(155) -> 156* 03(140) -> 141* 01(20) -> 21* 01(27) -> 28* 01(23) -> 24* 22(59) -> 60* 22(76) -> 77* 22(56) -> 57* 22(51) -> 52* 22(73) -> 74* 22(68) -> 69* 10(4) -> 4* 12(75) -> 76* 12(70) -> 71* 12(55) -> 56* 12(50) -> 51* 12(72) -> 73* 12(67) -> 68* 12(52) -> 53* 12(69) -> 70* 12(63) -> 64* 12(58) -> 59* 12(53) -> 54* 20(4) -> 4* 02(65) -> 66* 02(57) -> 58* 02(74) -> 75* 02(54) -> 55* 02(71) -> 72* 02(95) -> 96* 00(4) -> 4* 4 -> 16* 20 -> 67* 23 -> 63,48 26 -> 17,19,27,4 27 -> 50,33 28 -> 24* 34 -> 17* 49 -> 17* 54 -> 144* 57 -> 127* 60 -> 64,49,20,34,51,65,17 64 -> 51* 65 -> 110* 66 -> 58* 71 -> 148* 74 -> 133* 77 -> 95,64,49,51 95 -> 121* 96 -> 58* 120 -> 128,111,129,68 122 -> 111* 128 -> 111* 130 -> 118* 143 -> 146,122 145 -> 111* 147 -> 141* 158 -> 159,134 160 -> 156* problem: Qed