Build (method = -2) #dp: 163928 Step-3' Graph: 2341 vertices and 15379 arcs (2.27s) Step-4' Graph: 968 vertices and 12633 arcs (2.29s) #V4/#V3 = 0.41 #A4/#A3 = 0.82 Ready! (2.29s) Optimize a model with 1218 rows, 12634 columns and 35970 nonzeros Presolve removed 124 rows and 124 columns Presolve time: 0.11s Presolved: 1094 rows, 12510 columns, 35936 nonzeros Variable types: 0 continuous, 12510 integer (10830 binary) Found heuristic solution: objective 229.0000000 Optimize a model with 1094 rows, 12510 columns and 35936 nonzeros Presolved: 1094 rows, 12510 columns, 35936 nonzeros Root barrier log... Ordering time: 0.02s Barrier statistics: AA' NZ : 2.056e+04 Factor NZ : 6.502e+04 (roughly 6 MBytes of memory) Factor Ops : 6.976e+06 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.11820321e+04 -6.00115902e+04 6.77e+04 1.99e-01 1.34e+01 0s 1 3.51924303e+03 -1.47035299e+04 1.28e+04 1.11e-15 2.65e+00 0s 2 8.09546383e+02 -2.95990495e+03 1.67e+03 1.78e-15 3.84e-01 0s 3 3.23717674e+02 -8.65965282e+02 4.40e+02 8.88e-16 1.11e-01 0s 4 1.73991067e+02 -1.32526472e+02 1.12e+02 7.91e-16 2.80e-02 0s 5 1.40360280e+02 1.67903559e+01 3.90e+01 4.61e-16 9.11e-03 0s 6 1.21498169e+02 6.90500033e+01 6.92e+00 1.34e-15 2.58e-03 0s 7 1.15984404e+02 8.01783012e+01 3.97e+00 1.33e-15 1.65e-03 0s 8 1.14589421e+02 8.24291737e+01 3.40e+00 2.00e-15 1.46e-03 0s 9 1.09964189e+02 8.38105363e+01 1.57e+00 1.91e-15 1.12e-03 0s 10 1.06165342e+02 9.59878481e+01 3.31e-01 1.16e-15 4.15e-04 0s 11 1.04609760e+02 1.00118363e+02 1.19e-01 1.05e-15 1.81e-04 0s 12 1.04149775e+02 1.01299679e+02 8.00e-02 1.27e-15 1.15e-04 0s 13 1.03500721e+02 1.01994107e+02 3.02e-02 1.33e-15 6.06e-05 0s 14 1.03241532e+02 1.02435232e+02 1.44e-02 1.33e-15 3.24e-05 0s 15 1.03064788e+02 1.02542870e+02 5.77e-03 1.54e-15 2.09e-05 0s 16 1.02985225e+02 1.02712609e+02 2.51e-03 1.26e-15 1.09e-05 0s 17 1.02964876e+02 1.02729606e+02 1.92e-03 1.59e-15 9.42e-06 0s 18 1.02930850e+02 1.02829600e+02 9.87e-04 1.33e-15 4.06e-06 0s 19 1.02906858e+02 1.02830574e+02 4.46e-04 1.78e-15 3.05e-06 0s 20 1.02889419e+02 1.02857177e+02 6.29e-05 1.43e-15 1.29e-06 0s 21 1.02885536e+02 1.02884946e+02 1.24e-06 1.21e-15 2.36e-08 0s 22 1.02885186e+02 1.02885185e+02 1.19e-09 2.00e-15 1.64e-11 0s Barrier solved model in 22 iterations and 0.27 seconds Optimal objective 1.02885186e+02 Root relaxation: objective 1.028852e+02, 2079 iterations, 0.31 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 102.88519 0 94 229.00000 102.88519 55.1% - 0s H 0 0 104.0000000 102.88519 1.07% - 0s H 0 0 103.0000000 102.88519 0.11% - 1s Explored 0 nodes (4612 simplex iterations) in 1.05 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.030000000000e+02, best bound 1.030000000000e+02, gap 0.0% Preprocessing time: 2.34 seconds Gurobi run time: 1.05 seconds Total run time: 3.38 seconds Objective: 103 Solution: 1 x [59, 194] 1 x [66, 93] 1 x [31, 98] 1 x [50, 153] 1 x [56, 218, 240] 1 x [43, 112, 192] 1 x [26, 85, 101] 1 x [87, 105] 1 x [71, 104, 125] 1 x [55, 158] 1 x [78, 215] 1 x [19, 113] 1 x [28, 232] 1 x [182, 228] 1 x [149, 233] 1 x [157, 172] 1 x [6, 121] 1 x [21, 65] 1 x [119, 161] 1 x [103, 155] 1 x [37, 53, 248] 1 x [122, 141] 1 x [91, 137] 1 x [32, 77] 1 x [15, 117] 1 x [18, 165, 245] 1 x [94, 123, 132] 1 x [3, 47] 1 x [81, 82, 188] 1 x [35, 95, 197] 1 x [57, 154, 213] 1 x [107, 136, 179] 1 x [27, 49] 1 x [17, 54, 142] 1 x [22, 167, 231] 1 x [9, 58] 1 x [69, 86, 108] 1 x [73, 241] 1 x [160, 210, 244] 1 x [152, 168] 1 x [48, 111, 214] 1 x [72, 140, 177] 1 x [70, 92, 162] 1 x [127, 221, 239] 1 x [148, 159, 206] 1 x [124, 146] 1 x [126, 171, 190] 1 x [62, 223] 1 x [134, 217, 235] 1 x [156, 236] 1 x [34, 42, 147] 1 x [96, 242] 1 x [13, 202] 1 x [100, 145, 196] 1 x [52, 135, 183] 1 x [45, 150, 207] 1 x [99, 230, 247] 1 x [36, 178, 219] 1 x [23, 120] 1 x [175, 216] 1 x [29, 209, 229] 1 x [184, 185, 205] 1 x [24, 200] 1 x [84, 90] 1 x [80, 250] 1 x [8, 16, 61] 1 x [2, 110, 195] 1 x [11, 76, 109] 1 x [83, 174] 1 x [198, 220, 238] 1 x [1, 169] 1 x [30, 74, 114] 1 x [68, 118, 139] 1 x [88, 97, 173] 1 x [186, 189] 1 x [133, 164, 208] 1 x [75, 130, 224] 1 x [211, 234] 1 x [187, 199] 1 x [128, 144] 1 x [40, 115] 1 x [7, 89, 138] 1 x [201, 225] 1 x [191, 237] 1 x [79, 226] 1 x [67, 131] 1 x [41, 227] 1 x [203, 246] 1 x [33, 176] 1 x [12, 116] 1 x [25, 166] 1 x [20, 222] 1 x [38, 63, 143] 1 x [129, 212] 1 x [39, 163] 1 x [51, 170] 1 x [60, 64] 1 x [10, 180] 1 x [4, 204] 1 x [14, 243] 1 x [106, 181, 193] 1 x [44, 46, 151] 1 x [5, 102, 249]