Build (method = -2) #dp: 20458 Step-3' Graph: 635 vertices and 5139 arcs (0.14s) Step-4' Graph: 266 vertices and 4401 arcs (0.15s) #V4/#V3 = 0.42 #A4/#A3 = 0.86 Ready! (0.15s) Optimize a model with 386 rows, 4402 columns and 12678 nonzeros Presolve removed 66 rows and 66 columns Presolve time: 0.06s Presolved: 320 rows, 4336 columns, 12635 nonzeros Variable types: 0 continuous, 4336 integer (3942 binary) Optimize a model with 320 rows, 4336 columns and 12635 nonzeros Presolved: 320 rows, 4336 columns, 12635 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 6.900e+03 Factor NZ : 1.575e+04 (roughly 2 MBytes of memory) Factor Ops : 1.171e+06 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 3.81430948e+03 -1.29151096e+04 1.56e+04 2.03e-01 8.28e+00 0s 1 1.14112667e+03 -4.19927582e+03 3.04e+03 9.60e-02 1.83e+00 0s 2 3.04163320e+02 -7.44211883e+02 5.11e+02 9.16e-03 3.22e-01 0s 3 1.01260590e+02 -1.26631390e+02 8.55e+01 1.06e-03 5.94e-02 0s 4 6.29468961e+01 7.34658520e+00 1.02e+01 5.13e-16 9.56e-03 0s 5 5.78527054e+01 3.23862450e+01 3.23e+00 4.44e-16 3.59e-03 0s 6 5.57267887e+01 3.94192643e+01 1.94e+00 6.66e-16 2.17e-03 0s 7 5.41762684e+01 4.20044825e+01 1.33e+00 4.44e-16 1.56e-03 0s 8 5.27719745e+01 4.39896492e+01 8.46e-01 4.44e-16 1.10e-03 0s 9 5.22831836e+01 4.56670076e+01 5.36e-01 3.67e-16 8.04e-04 0s 10 5.00608607e+01 4.78614340e+01 8.90e-02 2.38e-16 2.58e-04 0s 11 4.98507209e+01 4.81464439e+01 6.45e-02 3.21e-16 1.99e-04 0s 12 4.95439177e+01 4.85879219e+01 3.21e-02 2.97e-16 1.11e-04 0s 13 4.93473950e+01 4.88122267e+01 1.62e-02 4.44e-16 6.22e-05 0s 14 4.92281949e+01 4.89667629e+01 7.48e-03 4.44e-16 3.04e-05 0s 15 4.91345515e+01 4.90059854e+01 1.17e-03 4.44e-16 1.49e-05 0s 16 4.91151860e+01 4.90725967e+01 5.31e-04 2.33e-16 4.93e-06 0s 17 4.90917119e+01 4.90842299e+01 5.03e-06 2.53e-16 8.64e-07 0s 18 4.90903176e+01 4.90901920e+01 6.43e-08 2.22e-16 1.45e-08 0s 19 4.90902778e+01 4.90902778e+01 3.32e-13 4.44e-16 1.03e-13 0s Barrier solved model in 19 iterations and 0.06 seconds Optimal objective 4.90902778e+01 Root relaxation: objective 4.909028e+01, 476 iterations, 0.07 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 49.09028 0 57 - 49.09028 - - 0s H 0 0 50.0000000 49.09028 1.82% - 0s Explored 0 nodes (1350 simplex iterations) in 0.27 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 5.000000000000e+01, best bound 5.000000000000e+01, gap 0.0% Preprocessing time: 0.17 seconds Gurobi run time: 0.27 seconds Total run time: 0.44 seconds Objective: 50 Solution: 1 x [49, 94] 1 x [13, 62, 105] 1 x [19, 26, 47] 1 x [85, 89, 102] 1 x [14, 53, 81] 1 x [41, 119] 1 x [21, 43] 1 x [3, 20, 32] 1 x [29, 99] 1 x [15, 61] 1 x [16, 64, 116] 1 x [36, 98, 110] 1 x [79, 113] 1 x [42, 50, 109] 1 x [27, 48] 1 x [18, 35, 40] 1 x [75, 77, 106] 1 x [44, 95] 1 x [28, 65, 103] 1 x [7, 83] 1 x [12, 24] 1 x [8, 78] 1 x [57, 86] 1 x [71, 88] 1 x [46, 69, 90] 1 x [11, 80] 1 x [66, 117] 1 x [56, 92] 1 x [54, 111] 1 x [1, 4, 58] 1 x [6, 23] 1 x [5, 55] 1 x [39, 67, 101] 1 x [37, 91, 96] 1 x [2, 63] 1 x [17, 52] 1 x [34, 118] 1 x [38, 114] 1 x [93, 108] 1 x [9, 72] 1 x [22, 59, 100] 1 x [70, 74, 112] 1 x [33, 60, 104] 1 x [25, 107] 1 x [51, 115] 1 x [68, 73] 1 x [30, 31] 1 x [76, 82, 120] 1 x [84] 1 x [10, 45, 87, 97]