Build (method = -2) #dp: 2589 Step-3' Graph: 64 vertices and 685 arcs (0.01s) Step-4' Graph: 50 vertices and 657 arcs (0.01s) #V4/#V3 = 0.78 #A4/#A3 = 0.96 Ready! (0.01s) Optimize a model with 131 rows, 658 columns and 1880 nonzeros Presolve removed 54 rows and 66 columns Presolve time: 0.01s Presolved: 77 rows, 592 columns, 1695 nonzeros Variable types: 0 continuous, 592 integer (22 binary) Found heuristic solution: objective 465.0000000 Found heuristic solution: objective 437.0000000 Optimize a model with 77 rows, 592 columns and 1695 nonzeros Presolved: 77 rows, 592 columns, 1695 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 8.530e+02 Factor NZ : 1.699e+03 Factor Ops : 5.002e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 3.90139390e+03 -1.00857358e+04 3.47e+04 1.26e-01 8.77e+01 0s 1 1.28109596e+03 -3.70775514e+03 5.42e+03 7.77e-15 1.49e+01 0s 2 5.19666352e+02 -1.19470120e+03 3.48e+02 9.77e-15 1.95e+00 0s 3 4.12652120e+02 -7.72281903e+01 2.45e+01 9.38e-15 4.23e-01 0s 4 3.56343636e+02 1.40312999e+02 4.24e+00 6.77e-15 1.80e-01 0s 5 3.33021080e+02 2.40684842e+02 1.19e+00 1.04e-14 7.65e-02 0s 6 3.21665617e+02 2.91142932e+02 4.13e-01 1.20e-14 2.53e-02 0s 7 3.20455768e+02 3.00470675e+02 2.15e-01 1.04e-14 1.65e-02 0s 8 3.17219771e+02 3.10091781e+02 4.52e-02 1.04e-14 5.88e-03 0s 9 3.16503433e+02 3.13035067e+02 1.21e-02 9.83e-15 2.86e-03 0s 10 3.16310108e+02 3.16094676e+02 1.56e-12 1.02e-14 1.78e-04 0s 11 3.16250060e+02 3.16249616e+02 5.79e-12 8.25e-15 3.66e-07 0s 12 3.16250000e+02 3.16250000e+02 8.24e-13 1.17e-14 3.66e-10 0s 13 3.16250000e+02 3.16250000e+02 6.54e-13 1.05e-14 3.66e-13 0s Barrier solved model in 13 iterations and 0.01 seconds Optimal objective 3.16250000e+02 Root relaxation: objective 3.162500e+02, 277 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 316.25000 0 10 437.00000 316.25000 27.6% - 0s H 0 0 317.0000000 316.25000 0.24% - 0s Explored 0 nodes (400 simplex iterations) in 0.02 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 3.170000000000e+02, best bound 3.170000000000e+02, gap 0.0% Preprocessing time: 0.02 seconds Gurobi run time: 0.02 seconds Total run time: 0.05 seconds Objective: 317 Solution: 4 x [81] 4 x [80] 5 x [79] 11 x [78] 8 x [77] 6 x [76] 7 x [75] 4 x [74] 5 x [73] 7 x [72] 8 x [71] 9 x [70] 12 x [69] 5 x [68] 9 x [67] 7 x [66] 7 x [65] 6 x [64] 5 x [63] 3 x [62] 1 x [61] 9 x [1, 61] 3 x [60] 1 x [2, 60] 6 x [3, 59] 1 x [2, 59] 3 x [4, 58] 5 x [2, 58] 4 x [5, 57] 1 x [5, 56] 1 x [7, 55] 1 x [5, 55] 3 x [6, 54] 1 x [9, 53] 6 x [7, 53] 2 x [9, 52] 9 x [8, 52] 1 x [11, 51] 8 x [10, 51] 1 x [9, 51] 4 x [12, 50] 6 x [13, 49] 5 x [14, 48] 1 x [47] 2 x [15, 47] 1 x [14, 47] 1 x [13, 47] 4 x [16, 46] 3 x [17, 45] 5 x [18, 44] 9 x [19, 43] 3 x [20, 42] 3 x [19, 42] 4 x [18, 42] 5 x [21, 41] 2 x [21, 40] 1 x [23, 39] 4 x [23, 38] 4 x [22, 38] 1 x [25, 37] 4 x [24, 37] 5 x [26, 36] 1 x [25, 36] 1 x [23, 36] 6 x [27, 35] 5 x [28, 34] 5 x [29, 33] 3 x [28, 32] 3 x [25, 32] 3 x [17, 31] 1 x [31, 31] 6 x [29, 30] 3 x [18, 28] 1 x [9, 16, 17] 2 x [12, 12, 16] 1 x [12, 12]