Build (method = -2) #dp: 18785 Step-3' Graph: 2852 vertices and 8549 arcs (0.66s) Step-4' Graph: 771 vertices and 4387 arcs (0.68s) #V4/#V3 = 0.27 #A4/#A3 = 0.51 Ready! (0.68s) Optimize a model with 1021 rows, 4388 columns and 11626 nonzeros Presolve removed 241 rows and 403 columns Presolve time: 0.05s Presolved: 780 rows, 3985 columns, 10801 nonzeros Variable types: 0 continuous, 3985 integer (0 binary) Found heuristic solution: objective 11477.000000 Found heuristic solution: objective 11178.000000 Optimize a model with 780 rows, 3985 columns and 10801 nonzeros Presolved: 780 rows, 3985 columns, 10801 nonzeros Root barrier log... Ordering time: 0.01s Barrier statistics: AA' NZ : 6.556e+03 Factor NZ : 3.034e+04 (roughly 2 MBytes of memory) Factor Ops : 2.193e+06 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.48873414e+05 -6.65176375e+05 3.06e+06 2.22e-16 1.51e+03 0s 1 4.47422093e+04 -3.38637489e+05 4.36e+05 1.11e-15 2.38e+02 0s 2 1.68053219e+04 -1.39423849e+05 6.07e+04 4.88e-15 4.30e+01 0s 3 1.27777848e+04 -3.34179927e+04 9.02e+03 4.88e-15 8.48e+00 0s 4 1.19685673e+04 -8.69873798e+03 1.65e+03 3.33e-15 2.94e+00 0s 5 1.15863624e+04 -2.61248936e+03 5.31e+02 2.00e-15 1.86e+00 0s 6 1.11562686e+04 1.53026551e+03 2.50e+02 1.22e-15 1.23e+00 0s 7 1.05761624e+04 4.14110217e+03 4.99e+01 1.33e-15 8.07e-01 0s 8 1.02468863e+04 6.59800122e+03 2.86e+01 7.63e-16 4.57e-01 0s 9 9.92706888e+03 7.79357797e+03 1.05e+01 8.19e-16 2.66e-01 0s 10 9.70727714e+03 8.58525655e+03 2.05e+00 7.77e-16 1.40e-01 0s 11 9.65728414e+03 9.25281418e+03 1.06e+00 7.77e-16 5.04e-02 0s 12 9.63886806e+03 9.37767037e+03 7.76e-01 7.77e-16 3.25e-02 0s 13 9.61977864e+03 9.40329976e+03 4.85e-01 8.88e-16 2.70e-02 0s 14 9.60898718e+03 9.44563787e+03 3.28e-01 8.38e-16 2.03e-02 0s 15 9.59484802e+03 9.50643894e+03 1.47e-01 8.03e-16 1.10e-02 0s 16 9.58639114e+03 9.55274938e+03 5.38e-02 7.01e-16 4.19e-03 0s 17 9.58261392e+03 9.56892469e+03 2.01e-02 6.51e-16 1.70e-03 0s 18 9.58030207e+03 9.57448821e+03 3.59e-03 5.98e-16 7.24e-04 0s 19 9.57968602e+03 9.57943799e+03 9.86e-05 6.14e-16 3.09e-05 0s 20 9.57961906e+03 9.57961903e+03 1.12e-08 6.08e-16 3.28e-09 0s 21 9.57961905e+03 9.57961905e+03 1.48e-11 6.37e-16 3.28e-12 0s Barrier solved model in 21 iterations and 0.10 seconds Optimal objective 9.57961905e+03 Root relaxation: objective 9.579619e+03, 743 iterations, 0.11 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 9579.61905 0 89 11178.0000 9579.61905 14.3% - 0s H 0 0 9580.0000000 9579.61905 0.00% - 0s Explored 0 nodes (1100 simplex iterations) in 0.29 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 9.580000000000e+03, best bound 9.580000000000e+03, gap 0.0% Preprocessing time: 0.70 seconds Gurobi run time: 0.29 seconds Total run time: 0.98 seconds Objective: 9580 Solution: 6 x [77] 82 x [162] 10 x [227] 4 x [74] 14 x [76] 92 x [92] 18 x [143] 45 x [12] 85 x [88] 72 x [89] 93 x [197] 62 x [49] 85 x [66] 19 x [131] 71 x [201] 10 x [159] 6 x [82] 28 x [82, 119] 73 x [25] 71 x [47] 63 x [137] 71 x [152] 38 x [34] 26 x [126] 22 x [128] 88 x [223] 82 x [5, 149] 18 x [149, 232] 66 x [122] 32 x [178] 81 x [18] 67 x [3] 62 x [250] 41 x [51] 49 x [100] 12 x [234] 90 x [58] 59 x [71] 9 x [214] 71 x [217] 1 x [196] 37 x [196, 228] 2 x [196, 206] 28 x [17] 29 x [103] 5 x [145] 71 x [231] 18 x [67] 16 x [98, 228] 59 x [98, 215] 73 x [21] 33 x [237] 87 x [57] 15 x [166] 41 x [183] 33 x [11, 55] 55 x [55, 73] 11 x [55, 232] 40 x [27] 18 x [91] 10 x [19] 14 x [24] 100 x [31] 45 x [65] 72 x [188] 45 x [40] 74 x [90] 79 x [195] 84 x [218] 21 x [243] 47 x [43] 68 x [102] 51 x [45] 26 x [184, 228] 19 x [22] 89 x [56] 49 x [180] 91 x [213] 31 x [249] 87 x [26] 24 x [241] 98 x [33] 46 x [192] 43 x [246] 43 x [244] 34 x [10, 115] 4 x [10, 111] 99 x [1] 76 x [107] 16 x [173] 89 x [239] 68 x [172] 41 x [225] 40 x [150] 94 x [222] 43 x [23] 21 x [15] 99 x [28] 31 x [54] 15 x [16] 84 x [158] 12 x [121, 146] 93 x [190] 25 x [235] 39 x [69] 12 x [101] 85 x [120] 25 x [170] 27 x [32] 59 x [75] 62 x [104] 87 x [169] 3 x [203] 5 x [68] 31 x [211] 19 x [115, 176] 54 x [182] 67 x [85] 29 x [247] 31 x [189, 247] 25 x [73, 232, 247] 45 x [36] 82 x [242] 3 x [86] 100 x [233] 17 x [156] 4 x [200] 40 x [2] 45 x [46] 29 x [144] 15 x [48, 219] 3 x [136] 36 x [193] 32 x [64, 139] 24 x [96] 3 x [160] 75 x [186] 21 x [48, 154] 4 x [111, 154] 5 x [111, 135, 154] 6 x [111, 154, 232] 9 x [154, 206, 228] 6 x [61, 99] 12 x [61, 116] 13 x [61, 70, 240] 4 x [61, 83, 240] 21 x [61, 226, 245] 16 x [20] 13 x [161] 61 x [39, 153] 8 x [39, 84] 60 x [106, 189] 14 x [93, 106, 232] 10 x [153, 209] 36 x [50] 14 x [63, 109] 19 x [113, 146, 206] 81 x [29] 65 x [134] 88 x [151] 90 x [221] 87 x [52] 83 x [123] 8 x [148] 22 x [229] 46 x [13, 238] 31 x [30, 62, 238] 3 x [163] 45 x [41] 25 x [125] 57 x [141] 6 x [35] 14 x [35, 232] 75 x [108] 87 x [110] 60 x [220] 6 x [30, 187, 224] 52 x [127, 168, 224] 8 x [14] 87 x [248] 8 x [81, 175] 99 x [44] 29 x [174] 34 x [216] 71 x [177] 89 x [199] 62 x [6, 79] 15 x [6, 80] 14 x [6, 8, 130] 18 x [181] 7 x [117, 185] 2 x [153, 185] 39 x [30, 168, 185] 9 x [30, 185, 245] 3 x [127, 130, 185] 1 x [127, 185] 39 x [42] 82 x [94] 84 x [112] 49 x [147] 57 x [165] 82 x [194] 3 x [204] 26 x [37, 142] 57 x [207] 32 x [118] 3 x [142, 210] 82 x [59, 210] 46 x [38, 78] 17 x [38, 230] 16 x [60, 179, 245] 25 x [78, 191] 28 x [78, 114] 4 x [9, 79] 74 x [9, 97] 14 x [4, 133] 3 x [114, 133] 9 x [53, 133] 6 x [62, 95, 133] 10 x [129, 167] 21 x [129, 132, 167] 51 x [129, 198, 245] 1 x [111, 129, 138] 8 x [111, 129, 206] 28 x [4, 167] 17 x [4, 109] 4 x [30, 84, 142] 7 x [72, 130, 142] 38 x [8, 114, 226] 10 x [30, 124, 212] 42 x [53, 62, 164] 12 x [95, 157, 171] 15 x [84, 87, 157] 14 x [95, 157, 205] 21 x [95, 157, 240] 25 x [95, 130, 208] 5 x [87, 208, 226] 7 x [179, 236, 240] 21 x [72, 164, 171] 14 x [8, 95, 164] 73 x [7, 140, 155] 8 x [7, 83, 140, 187] 2 x [7, 70, 83, 140] 5 x [7, 70, 83, 111] 9 x [7, 105, 138, 146] 21 x [8, 139, 175] 3 x [72, 139, 240] 8 x [95, 139, 202] 3 x [124, 175, 240] 43 x [175, 179, 202]