Build (method = -2) #dp: 5964 Step-3' Graph: 440 vertices and 2928 arcs (0.03s) Step-4' Graph: 421 vertices and 2890 arcs (0.03s) #V4/#V3 = 0.96 #A4/#A3 = 0.99 Ready! (0.03s) Optimize a model with 461 rows, 2891 columns and 7839 nonzeros Presolve removed 85 rows and 161 columns Presolve time: 0.04s Presolved: 376 rows, 2730 columns, 7618 nonzeros Variable types: 0 continuous, 2730 integer (0 binary) Found heuristic solution: objective 353.0000000 Found heuristic solution: objective 327.0000000 Found heuristic solution: objective 322.0000000 Optimize a model with 376 rows, 2730 columns and 7618 nonzeros Presolved: 376 rows, 2730 columns, 7618 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 4.729e+03 Factor NZ : 2.226e+04 (roughly 1 MByte of memory) Factor Ops : 2.214e+06 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 4.77438531e+03 -8.55542687e+04 9.57e+04 2.22e-16 2.05e+02 0s 1 1.52890019e+03 -4.50137247e+04 1.62e+04 8.88e-16 3.80e+01 0s 2 6.35125868e+02 -1.90247948e+04 2.53e+03 1.51e-14 7.43e+00 0s 3 4.90108338e+02 -4.90657439e+03 4.29e+02 1.20e-14 1.49e+00 0s 4 4.26082915e+02 -1.79628788e+03 9.01e+01 7.55e-15 4.83e-01 0s 5 3.85868766e+02 -1.02153539e+03 1.97e+00 3.00e-15 2.58e-01 0s 6 3.89180163e+02 -7.28306137e+02 1.61e+00 2.44e-15 2.05e-01 0s 7 3.72557793e+02 -4.54431090e+02 9.79e-01 1.78e-15 1.51e-01 0s 8 3.44927829e+02 -2.97503161e+02 3.88e-01 1.55e-15 1.17e-01 0s 9 3.08402195e+02 -8.47739760e+01 2.69e-01 9.99e-16 7.18e-02 0s 10 2.81297113e+02 4.41566729e+00 1.88e-01 6.66e-16 5.06e-02 0s 11 2.38134310e+02 1.11213252e+02 8.13e-02 4.44e-16 2.32e-02 0s 12 2.21503084e+02 1.59702820e+02 4.88e-02 4.03e-16 1.13e-02 0s 13 2.02627635e+02 1.83344422e+02 7.39e-03 3.33e-16 3.52e-03 0s 14 1.99139462e+02 1.98217760e+02 7.91e-05 3.86e-16 1.68e-04 0s 15 1.99000460e+02 1.98998656e+02 3.72e-09 4.35e-16 3.29e-07 0s 16 1.99000000e+02 1.99000000e+02 2.22e-12 4.62e-16 3.31e-13 0s Barrier solved model in 16 iterations and 0.07 seconds Optimal objective 1.99000000e+02 Root relaxation: objective 1.990000e+02, 1401 iterations, 0.07 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 199.00000 0 4 322.00000 199.00000 38.2% - 0s H 0 0 200.0000000 199.00000 0.50% - 0s H 0 0 199.0000000 199.00000 0.0% - 0s Explored 0 nodes (1833 simplex iterations) in 0.19 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.990000000000e+02, best bound 1.990000000000e+02, gap 0.0% Preprocessing time: 0.05 seconds Gurobi run time: 0.19 seconds Total run time: 0.24 seconds Objective: 199 Solution: 2 x [2] 2 x [2, 24] 6 x [2, 3] 7 x [28, 37] 1 x [21] 9 x [6, 21] 9 x [17] 2 x [17, 24] 1 x [14, 17] 4 x [14, 14, 17] 5 x [31, 38] 3 x [10, 31] 3 x [26] 2 x [7, 26] 1 x [26, 34] 7 x [26, 34, 34] 6 x [19, 23] 2 x [23, 24] 1 x [12, 23, 24] 2 x [12, 12, 23, 24] 2 x [19, 20] 4 x [8, 20] 7 x [18, 20] 1 x [10, 20, 28] 1 x [20, 28] 5 x [16, 22] 6 x [8, 16] 12 x [15, 32] 2 x [19, 32] 11 x [30, 36] 2 x [10, 36] 7 x [27, 28] 1 x [29] 2 x [8, 29] 10 x [10, 29] 2 x [4, 25] 6 x [18, 25] 5 x [9, 11] 5 x [4, 5] 8 x [1, 13] 7 x [1, 4] 1 x [1, 28] 6 x [11, 40] 1 x [11, 39] 1 x [10, 10, 39] 1 x [33, 35] 5 x [35, 35] 3 x [33, 33]