Build (method = -2) #dp: 69204 Step-3' Graph: 6710 vertices and 20123 arcs (2.98s) Step-4' Graph: 1243 vertices and 9189 arcs (3.03s) #V4/#V3 = 0.19 #A4/#A3 = 0.46 Ready! (3.03s) Optimize a model with 1492 rows, 9190 columns and 25088 nonzeros Presolve removed 309 rows and 311 columns Presolve time: 0.10s Presolved: 1183 rows, 8879 columns, 24779 nonzeros Variable types: 0 continuous, 8879 integer (7083 binary) Optimize a model with 1183 rows, 8879 columns and 24779 nonzeros Presolved: 1183 rows, 8879 columns, 24779 nonzeros Root barrier log... Ordering time: 0.01s Barrier statistics: AA' NZ : 1.362e+04 Factor NZ : 6.204e+04 (roughly 5 MBytes of memory) Factor Ops : 6.858e+06 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 7.38981318e+04 -1.33165615e+05 1.21e+06 4.17e-01 2.79e+02 0s 1 1.08156921e+04 -7.65800462e+04 1.93e+05 8.88e-16 4.69e+01 0s 2 2.55888661e+03 -2.63716549e+04 1.94e+04 1.11e-15 5.61e+00 0s 3 7.15108606e+02 -4.96857971e+03 2.17e+03 1.33e-15 7.28e-01 0s 4 3.25248684e+02 -1.17754800e+03 5.63e+02 8.88e-16 1.87e-01 0s 5 2.17972769e+02 -3.26360802e+02 1.95e+02 6.80e-16 6.57e-02 0s 6 1.72386716e+02 -1.44722759e+02 5.95e+01 6.66e-16 2.79e-02 0s 7 1.59553262e+02 4.93084299e+01 1.69e+01 5.34e-16 8.26e-03 0s 8 1.56457533e+02 1.07365883e+02 5.44e+00 4.44e-16 3.20e-03 0s 9 1.55498807e+02 1.44719619e+02 2.60e+00 4.44e-16 7.41e-04 0s 10 1.55023848e+02 1.54815506e+02 1.20e-01 4.44e-16 1.67e-05 0s 11 1.55000047e+02 1.54999592e+02 4.01e-05 4.44e-16 2.73e-08 0s 12 1.55000000e+02 1.55000000e+02 4.01e-11 6.66e-16 2.74e-14 0s Barrier solved model in 12 iterations and 0.15 seconds Optimal objective 1.55000000e+02 Root relaxation: objective 1.550000e+02, 5778 iterations, 0.23 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 155.0000000 155.00000 0.0% - 0s Explored 0 nodes (6959 simplex iterations) in 0.62 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.550000000000e+02, best bound 1.550000000000e+02, gap 0.0% Preprocessing time: 3.07 seconds Gurobi run time: 0.62 seconds Total run time: 3.69 seconds Objective: 155 Solution: 1 x [232] 1 x [148] 1 x [22] 1 x [142] 1 x [94] 1 x [160] 1 x [25] 1 x [37] 1 x [181] 1 x [10] 1 x [73] 1 x [178] 1 x [157] 1 x [72] 1 x [114] 1 x [214] 1 x [133] 1 x [88] 1 x [132] 1 x [159] 1 x [108] 1 x [155] 1 x [210] 1 x [75] 1 x [222] 1 x [180] 1 x [81] 1 x [63] 1 x [12] 1 x [77] 1 x [230] 1 x [248] 1 x [119] 1 x [122] 1 x [56] 1 x [167] 1 x [9] 1 x [92] 1 x [150] 1 x [194] 1 x [71] 1 x [147] 1 x [102] 1 x [34] 1 x [143] 1 x [234] 1 x [74] 1 x [86] 1 x [23] 1 x [38, 78] 1 x [7] 1 x [135] 1 x [200] 1 x [152, 208] 1 x [125, 129] 1 x [67] 1 x [211] 1 x [66] 1 x [52, 192] 1 x [220] 1 x [217] 1 x [16, 96] 1 x [153] 1 x [139] 1 x [202, 237] 1 x [212] 1 x [20, 141] 1 x [26, 175] 1 x [156] 1 x [176, 229] 1 x [128, 188] 1 x [113] 1 x [59] 1 x [41, 53] 1 x [95, 215] 1 x [171] 1 x [14, 48] 1 x [197, 243] 1 x [61] 1 x [44, 162] 1 x [165] 1 x [110, 154] 1 x [91, 246] 1 x [62, 68] 1 x [172, 206] 1 x [15, 190] 1 x [64, 93] 1 x [219, 225] 1 x [49, 186] 1 x [31, 101, 158] 1 x [118, 174] 1 x [8, 196] 1 x [76, 87] 1 x [203, 240] 1 x [127, 198] 1 x [249] 1 x [58, 98] 1 x [21, 168] 1 x [46, 136] 1 x [224] 1 x [35] 1 x [17, 115] 1 x [32, 103] 1 x [242] 1 x [4, 65] 1 x [30, 144] 1 x [69, 169] 1 x [45, 145] 1 x [99, 138] 1 x [146, 245] 1 x [89, 241] 1 x [121, 209] 1 x [19, 116] 1 x [29, 218] 1 x [47, 184] 1 x [39, 79] 1 x [18, 50, 204] 1 x [100, 161] 1 x [177, 183, 207] 1 x [3, 228] 1 x [90, 235] 1 x [85, 221] 1 x [223, 236] 1 x [54, 213] 1 x [2] 1 x [82, 187] 1 x [149, 166, 189] 1 x [112, 137] 1 x [151, 247] 1 x [109, 170] 1 x [27, 51] 1 x [97, 131, 216] 1 x [84, 106] 1 x [40, 123] 1 x [105, 199] 1 x [1, 6] 1 x [107, 238] 1 x [43, 140, 227] 1 x [36, 117] 1 x [33, 70, 80] 1 x [126, 195] 1 x [134, 173, 205] 1 x [11, 231] 1 x [83, 226] 1 x [111, 201] 1 x [163, 185] 1 x [179, 193] 1 x [28, 239] 1 x [55, 120] 1 x [13, 104, 233] 1 x [5, 124] 1 x [164, 244] 1 x [57, 191] 1 x [60, 130] 1 x [24, 42, 182]