Build (method = -2) #dp: 34572 Step-3' Graph: 1742 vertices and 7304 arcs (0.37s) Step-4' Graph: 623 vertices and 5066 arcs (0.38s) #V4/#V3 = 0.36 #A4/#A3 = 0.69 Ready! (0.38s) Optimize a model with 743 rows, 5067 columns and 13959 nonzeros Presolve removed 96 rows and 96 columns Presolve time: 0.04s Presolved: 647 rows, 4971 columns, 13944 nonzeros Variable types: 0 continuous, 4971 integer (3935 binary) Optimize a model with 647 rows, 4971 columns and 13944 nonzeros Presolved: 647 rows, 4971 columns, 13944 nonzeros Root barrier log... Ordering time: 0.01s Barrier statistics: AA' NZ : 7.814e+03 Factor NZ : 3.363e+04 (roughly 3 MBytes of memory) Factor Ops : 3.222e+06 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 3.29741290e+03 -1.40259602e+04 2.53e+04 2.82e-01 1.01e+01 0s 1 9.14445275e+02 -4.97862280e+03 5.11e+03 6.84e-02 2.21e+00 0s 2 2.89257923e+02 -1.48107119e+03 8.08e+02 1.05e-02 4.08e-01 0s 3 1.10764143e+02 -2.94578419e+02 1.51e+02 1.43e-03 8.39e-02 0s 4 6.89291635e+01 -5.14633419e+01 2.95e+01 8.88e-16 1.98e-02 0s 5 6.01421756e+01 1.60851973e+01 9.94e+00 6.66e-16 6.17e-03 0s 6 5.72931924e+01 2.80697305e+01 6.02e+00 5.67e-16 3.78e-03 0s 7 5.52631801e+01 3.03727255e+01 4.22e+00 4.03e-05 3.06e-03 0s 8 5.38868642e+01 3.64904397e+01 3.34e+00 6.31e-16 2.09e-03 0s 9 5.17806531e+01 4.19090879e+01 2.02e+00 8.88e-16 1.14e-03 0s 10 4.87268607e+01 4.45910495e+01 3.39e-01 1.33e-15 4.36e-04 0s 11 4.82865572e+01 4.57461582e+01 2.02e-01 1.33e-15 2.66e-04 0s 12 4.79471830e+01 4.64520407e+01 1.14e-01 8.88e-16 1.55e-04 0s 13 4.76884996e+01 4.68494394e+01 6.11e-02 5.59e-16 8.69e-05 0s 14 4.75948172e+01 4.69785950e+01 4.43e-02 7.33e-16 6.37e-05 0s 15 4.74345559e+01 4.70915956e+01 1.47e-02 1.33e-15 3.51e-05 0s 16 4.73639646e+01 4.71692311e+01 6.62e-03 6.76e-16 1.98e-05 0s 17 4.73503138e+01 4.72090748e+01 5.07e-03 1.11e-15 1.44e-05 0s 18 4.73236498e+01 4.72341056e+01 2.67e-03 7.17e-16 9.11e-06 0s 19 4.73032507e+01 4.72474612e+01 1.01e-03 7.77e-16 5.65e-06 0s 20 4.72913172e+01 4.72791997e+01 2.05e-04 6.66e-16 1.23e-06 0s 21 4.72881331e+01 4.72859465e+01 5.38e-05 1.22e-15 2.22e-07 0s 22 4.72869714e+01 4.72867926e+01 4.53e-06 6.66e-16 1.82e-08 0s 23 4.72868562e+01 4.72868561e+01 1.11e-09 5.55e-16 4.69e-12 0s Barrier solved model in 23 iterations and 0.12 seconds Optimal objective 4.72868562e+01 Root relaxation: objective 4.728686e+01, 375 iterations, 0.13 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 47.28686 0 160 - 47.28686 - - 0s H 0 0 62.0000000 47.28686 23.7% - 0s H 0 0 48.0000000 47.28686 1.49% - 0s Explored 0 nodes (678 simplex iterations) in 0.33 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 4.800000000000e+01, best bound 4.800000000000e+01, gap 0.0% Preprocessing time: 0.40 seconds Gurobi run time: 0.33 seconds Total run time: 0.73 seconds Objective: 48 Solution: 1 x [56, 115] 1 x [47, 62, 63] 1 x [10, 19, 55] 1 x [59, 70, 114] 1 x [38, 78] 1 x [39, 91, 96] 1 x [28, 84, 117] 1 x [14, 74] 1 x [23, 99] 1 x [32, 82] 1 x [31, 40] 1 x [58, 60, 90] 1 x [33, 53, 94] 1 x [44, 95] 1 x [5, 57] 1 x [13, 49, 85] 1 x [65, 100, 107] 1 x [24, 48, 120] 1 x [17, 103] 1 x [1, 54, 88] 1 x [27, 69] 1 x [93, 106] 1 x [26, 110] 1 x [9, 15, 67] 1 x [29, 75] 1 x [73, 76, 87] 1 x [25, 52, 98] 1 x [43, 101] 1 x [8, 20, 71] 1 x [11, 16, 22] 1 x [51, 89, 97] 1 x [77, 83] 1 x [12, 81] 1 x [4, 6] 1 x [30, 108] 1 x [21, 41, 61] 1 x [2, 45] 1 x [35, 64, 104] 1 x [3, 113] 1 x [34, 50, 86] 1 x [79, 112] 1 x [7, 102, 119] 1 x [18, 111] 1 x [80, 105] 1 x [37, 46, 92] 1 x [36, 116, 118] 1 x [66, 72, 109] 1 x [42, 68]