Build (method = -2) #dp: 639 Step-3' Graph: 130 vertices and 383 arcs (0.01s) Step-4' Graph: 38 vertices and 199 arcs (0.01s) #V4/#V3 = 0.29 #A4/#A3 = 0.52 Ready! (0.01s) Optimize a model with 98 rows, 200 columns and 528 nonzeros Presolve removed 52 rows and 64 columns Presolve time: 0.00s Presolved: 46 rows, 136 columns, 356 nonzeros Variable types: 0 continuous, 136 integer (8 binary) Found heuristic solution: objective 3008.0000000 Found heuristic solution: objective 2974.0000000 Found heuristic solution: objective 2711.0000000 Optimize a model with 46 rows, 136 columns and 356 nonzeros Presolved: 46 rows, 136 columns, 356 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 2.020e+02 Factor NZ : 6.570e+02 Factor Ops : 1.100e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.18060136e+04 -1.28778210e+04 1.88e+04 1.04e-01 3.37e+02 0s 1 4.43826107e+03 -3.94770815e+03 1.98e+03 4.44e-16 5.02e+01 0s 2 2.95200148e+03 6.84250029e+02 7.89e+01 1.60e-14 8.44e+00 0s 3 2.61672305e+03 2.03531894e+03 6.12e+00 3.66e-15 2.05e+00 0s 4 2.49307737e+03 2.25544043e+03 9.07e-01 1.55e-15 8.32e-01 0s 5 2.45728694e+03 2.38263166e+03 3.18e-01 3.33e-16 2.61e-01 0s 6 2.44531601e+03 2.42806227e+03 9.72e-02 2.22e-16 6.04e-02 0s 7 2.44343845e+03 2.44193762e+03 2.75e-02 3.33e-16 5.28e-03 0s 8 2.44300950e+03 2.44297975e+03 1.14e-10 2.53e-16 1.04e-04 0s 9 2.44300000e+03 2.44300000e+03 2.72e-10 2.22e-16 7.57e-10 0s Barrier solved model in 9 iterations and 0.00 seconds Optimal objective 2.44300000e+03 Root relaxation: objective 2.443000e+03, 77 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 2443.0000000 2443.00000 0.0% - 0s Explored 0 nodes (77 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 2.443000000000e+03, best bound 2.443000000000e+03, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.01 seconds Total run time: 0.02 seconds Objective: 2443 Solution: 57 x [55] 27 x [49] 36 x [25] 76 x [4] 85 x [22] 93 x [46] 74 x [19] 88 x [34] 45 x [10] 89 x [7] 51 x [40] 40 x [37] 36 x [1] 17 x [58] 57 x [16] 7 x [21, 31] 71 x [39] 100 x [45] 88 x [12] 76 x [9] 73 x [33] 70 x [17] 85 x [48] 36 x [41] 96 x [20] 23 x [6] 71 x [11] 73 x [59] 43 x [29] 39 x [51] 20 x [53] 13 x [26] 89 x [38] 8 x [57] 12 x [5] 29 x [50] 21 x [56] 4 x [30] 15 x [30, 35] 12 x [18, 21, 44] 30 x [13, 28] 10 x [8, 28] 34 x [8, 27, 28] 18 x [3, 52] 78 x [3, 42, 44] 7 x [2, 13, 24] 29 x [15, 43, 54] 44 x [36, 52] 20 x [21, 23, 43] 14 x [2, 32, 43] 28 x [14, 32, 43] 36 x [2, 14, 32] 1 x [14, 36] 3 x [36, 44] 8 x [21, 36] 21 x [8, 15, 60] 16 x [2, 8, 21] 1 x [8, 42, 47]