Build (method = -2) #dp: 24504 Step-3' Graph: 289 vertices and 11396 arcs (0.18s) Step-4' Graph: 191 vertices and 11200 arcs (0.19s) #V4/#V3 = 0.66 #A4/#A3 = 0.98 Ready! (0.19s) Optimize a model with 380 rows, 11201 columns and 33227 nonzeros Presolve removed 6 rows and 35 columns Presolve time: 0.14s Presolved: 374 rows, 11166 columns, 31379 nonzeros Variable types: 0 continuous, 11166 integer (5196 binary) Found heuristic solution: objective 413.0000000 Optimize a model with 374 rows, 11166 columns and 31379 nonzeros Presolved: 374 rows, 11166 columns, 31379 nonzeros Root barrier log... Ordering time: 0.01s Barrier statistics: AA' NZ : 1.671e+04 Factor NZ : 2.999e+04 (roughly 5 MBytes of memory) Factor Ops : 3.394e+06 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 2.00799732e+04 -1.20981827e+05 2.93e+05 2.85e-01 5.55e+01 0s 1 6.14518941e+03 -2.61239064e+04 6.32e+04 1.09e-14 1.18e+01 0s 2 9.26570528e+02 -8.98416087e+03 4.88e+03 5.11e-15 1.19e+00 0s 3 3.70406017e+02 -1.86158157e+03 3.40e+02 5.77e-15 1.39e-01 0s 4 2.36646029e+02 -5.48281905e+02 9.30e+01 4.90e-15 4.42e-02 0s 5 2.09826422e+02 -1.37391483e+02 4.10e+01 5.19e-15 1.88e-02 0s 6 1.91546031e+02 6.17874691e+01 1.60e+01 6.62e-15 6.69e-03 0s 7 1.84080815e+02 9.68800752e+01 9.30e+00 5.70e-15 4.34e-03 0s 8 1.76859574e+02 1.26468185e+02 3.93e+00 6.34e-15 2.40e-03 0s 9 1.72440090e+02 1.50982672e+02 1.67e+00 6.81e-15 1.01e-03 0s 10 1.68867159e+02 1.58097127e+02 4.01e-01 7.12e-15 4.92e-04 0s 11 1.68010707e+02 1.60808012e+02 1.75e-01 5.72e-15 3.26e-04 0s 12 1.67433573e+02 1.64646070e+02 6.08e-02 5.86e-15 1.26e-04 0s 13 1.67215698e+02 1.65839766e+02 2.59e-02 5.14e-15 6.20e-05 0s 14 1.67104815e+02 1.66610741e+02 1.18e-02 6.95e-15 2.23e-05 0s 15 1.67053631e+02 1.66879217e+02 5.69e-03 5.67e-15 7.93e-06 0s 16 1.67005668e+02 1.66981324e+02 2.77e-04 6.66e-15 1.09e-06 0s 17 1.67000130e+02 1.66999420e+02 4.69e-07 5.15e-15 3.16e-08 0s 18 1.67000000e+02 1.66999999e+02 2.84e-12 5.91e-15 3.17e-11 0s Barrier solved model in 18 iterations and 0.21 seconds Optimal objective 1.67000000e+02 Root relaxation: objective 1.670000e+02, 2687 iterations, 0.30 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 167.00000 0 111 413.00000 167.00000 59.6% - 1s H 0 0 172.0000000 167.00000 2.91% - 1s H 0 0 169.0000000 167.00000 1.18% - 1s H 0 0 168.0000000 167.00000 0.60% - 1s 0 0 167.00000 0 100 168.00000 167.00000 0.60% - 2s * 0 0 0 167.0000000 167.00000 0.0% - 3s Explored 0 nodes (11986 simplex iterations) in 3.44 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.670000000000e+02, best bound 1.670000000000e+02, gap 0.0% Preprocessing time: 0.24 seconds Gurobi run time: 3.44 seconds Total run time: 3.68 seconds Objective: 167 Solution: 1 x [1, 2, 189] 1 x [1, 3, 188] 1 x [2, 5, 187] 1 x [1, 7, 186] 1 x [3, 7, 185] 2 x [2, 9, 184] 2 x [3, 9, 183] 1 x [1, 12, 182] 1 x [3, 10, 182] 1 x [7, 7, 181] 2 x [3, 13, 180] 1 x [5, 12, 179] 3 x [8, 10, 178] 1 x [2, 18, 177] 1 x [8, 12, 177] 1 x [2, 19, 176] 2 x [4, 18, 175] 1 x [8, 14, 175] 1 x [9, 13, 175] 1 x [11, 11, 175] 2 x [9, 14, 174] 1 x [10, 15, 173] 1 x [2, 24, 172] 1 x [5, 24, 171] 1 x [9, 20, 171] 2 x [10, 20, 170] 1 x [1, 30, 169] 1 x [13, 18, 169] 2 x [6, 26, 168] 1 x [3, 30, 167] 1 x [5, 29, 166] 1 x [6, 28, 166] 2 x [7, 27, 166] 1 x [3, 31, 165] 1 x [8, 27, 165] 1 x [13, 22, 165] 2 x [1, 34, 164] 1 x [13, 23, 164] 1 x [1, 35, 163] 2 x [2, 35, 162] 1 x [2, 37, 161] 2 x [8, 31, 161] 1 x [1, 39, 160] 2 x [16, 25, 160] 2 x [8, 33, 159] 1 x [6, 37, 158] 1 x [17, 27, 158] 2 x [15, 32, 157] 1 x [1, 47, 156] 1 x [4, 44, 156] 1 x [5, 44, 155] 1 x [16, 33, 155] 1 x [13, 37, 154] 1 x [26, 27, 153] 1 x [18, 35, 152] 1 x [9, 46, 151] 1 x [15, 40, 151] 1 x [23, 33, 150] 1 x [12, 46, 149] 1 x [14, 45, 148] 1 x [2, 55, 147] 1 x [10, 49, 147] 1 x [23, 38, 146] 1 x [25, 39, 145] 2 x [14, 50, 144] 1 x [28, 38, 144] 1 x [29, 37, 144] 1 x [15, 51, 143] 1 x [11, 56, 142] 1 x [12, 55, 142] 1 x [3, 63, 141] 1 x [28, 44, 140] 2 x [31, 41, 139] 1 x [20, 52, 138] 1 x [11, 61, 137] 1 x [16, 57, 136] 1 x [30, 47, 136] 1 x [8, 69, 135] 1 x [6, 72, 134] 1 x [9, 70, 134] 2 x [17, 64, 133] 1 x [22, 61, 132] 2 x [20, 64, 131] 1 x [37, 50, 130] 1 x [43, 46, 130] 1 x [29, 58, 129] 1 x [37, 54, 128] 1 x [1, 81, 127] 1 x [6, 76, 127] 1 x [39, 53, 127] 1 x [17, 72, 126] 1 x [43, 51, 125] 1 x [48, 48, 125] 2 x [10, 81, 124] 1 x [7, 84, 123] 1 x [2, 88, 122] 1 x [5, 85, 122] 2 x [13, 81, 121] 1 x [4, 88, 120] 1 x [29, 73, 119] 1 x [42, 62, 119] 1 x [32, 73, 118] 1 x [43, 65, 117] 1 x [3, 94, 116] 1 x [22, 80, 116] 1 x [47, 63, 115] 1 x [19, 84, 114] 1 x [50, 61, 113] 1 x [13, 90, 112] 1 x [24, 83, 111] 1 x [1, 103, 110] 1 x [27, 82, 110] 1 x [30, 79, 110] 1 x [3, 102, 109] 1 x [3, 103, 108] 1 x [14, 92, 108] 1 x [24, 85, 107] 1 x [9, 99, 106] 1 x [22, 88, 106] 1 x [6, 103, 105] 1 x [22, 89, 105] 1 x [24, 87, 105] 1 x [58, 60, 105] 1 x [5, 104, 104] 1 x [17, 95, 103] 1 x [23, 91, 103] 1 x [27, 88, 102] 1 x [32, 84, 102] 1 x [41, 76, 102] 1 x [56, 66, 102] 1 x [21, 93, 101] 1 x [28, 88, 101] 1 x [21, 94, 100] 1 x [39, 82, 98] 1 x [23, 95, 97] 1 x [27, 92, 96] 1 x [63, 64, 95] 1 x [36, 87, 93] 1 x [51, 77, 91] 1 x [60, 74, 89] 1 x [67, 68, 89] 1 x [59, 75, 86] 1 x [70, 71, 83] 1 x [65, 76, 78] 1 x [63, 78, 78]