Build (method = -2) #dp: 5390 Step-3' Graph: 734 vertices and 2195 arcs (0.05s) Step-4' Graph: 364 vertices and 1455 arcs (0.05s) #V4/#V3 = 0.50 #A4/#A3 = 0.66 Ready! (0.05s) Optimize a model with 404 rows, 1456 columns and 3644 nonzeros Presolve removed 18 rows and 26 columns Presolve time: 0.01s Presolved: 386 rows, 1430 columns, 3604 nonzeros Variable types: 0 continuous, 1430 integer (0 binary) Found heuristic solution: objective 1793.0000000 Found heuristic solution: objective 1745.0000000 Optimize a model with 386 rows, 1430 columns and 3604 nonzeros Presolved: 386 rows, 1430 columns, 3604 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 2.703e+03 Factor NZ : 1.184e+04 Factor Ops : 5.729e+05 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 3.50089623e+04 -3.42386162e+05 4.26e+05 2.22e-16 9.16e+02 0s 1 9.65178819e+03 -1.77383188e+05 6.23e+04 1.22e-15 1.65e+02 0s 2 4.14522617e+03 -5.12598488e+04 1.17e+04 1.78e-15 3.44e+01 0s 3 2.27577630e+03 -9.48691175e+03 1.18e+03 1.38e-14 5.22e+00 0s 4 1.96650232e+03 -3.55092818e+03 2.27e+02 6.77e-15 2.05e+00 0s 5 1.79210830e+03 -2.35324403e+03 1.39e+02 5.00e-15 1.50e+00 0s 6 1.57753294e+03 -1.58564461e+03 9.32e+01 3.33e-15 1.14e+00 0s 7 1.24289357e+03 -6.95590262e+02 3.07e+01 1.78e-15 6.82e-01 0s 8 1.12182752e+03 2.20868546e+02 1.88e+01 7.77e-16 3.15e-01 0s 9 1.02000105e+03 5.24976221e+02 7.77e+00 7.11e-16 1.72e-01 0s 10 9.67608364e+02 6.64315030e+02 4.58e+00 7.07e-16 1.05e-01 0s 11 9.20398950e+02 7.59638575e+02 1.76e+00 6.29e-16 5.58e-02 0s 12 9.05358689e+02 8.28915942e+02 8.71e-01 6.39e-16 2.65e-02 0s 13 8.97703921e+02 8.65359891e+02 3.45e-01 6.16e-16 1.12e-02 0s 14 8.93959236e+02 8.75427940e+02 1.24e-01 6.75e-16 6.42e-03 0s 15 8.92962668e+02 8.86634037e+02 2.60e-02 5.45e-16 2.19e-03 0s 16 8.92512338e+02 8.91429016e+02 6.65e-04 4.44e-16 3.75e-04 0s 17 8.92430866e+02 8.92425141e+02 1.28e-12 4.94e-16 1.98e-06 0s 18 8.92430001e+02 8.92429995e+02 3.44e-12 7.06e-16 1.98e-09 0s Barrier solved model in 18 iterations and 0.04 seconds Optimal objective 8.92430001e+02 Root relaxation: objective 8.924300e+02, 649 iterations, 0.05 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 892.43000 0 55 1745.00000 892.43000 48.9% - 0s H 0 0 902.0000000 892.43000 1.06% - 0s H 0 0 896.0000000 892.43000 0.40% - 0s H 0 0 893.0000000 892.43000 0.06% - 0s Explored 0 nodes (1603 simplex iterations) in 0.18 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 8.930000000000e+02, best bound 8.930000000000e+02, gap 0.0% Preprocessing time: 0.06 seconds Gurobi run time: 0.18 seconds Total run time: 0.24 seconds Objective: 893 Solution: 48 x [35] 20 x [29, 37, 39] 42 x [8, 13, 22] 3 x [14, 40] 12 x [13, 31, 40] 75 x [20, 34] 55 x [25, 27, 36] 24 x [1, 2, 21, 22, 25, 27] 30 x [1, 4, 30] 69 x [4, 10, 33] 15 x [1, 20, 30] 3 x [13, 20, 27, 36] 2 x [12, 13, 19, 20] 1 x [19, 20] 1 x [5, 15, 21, 37] 8 x [7, 15, 33] 18 x [10, 12, 15] 40 x [14, 15, 19] 7 x [13, 15, 19, 31] 4 x [2, 9, 26] 28 x [16, 17, 26] 67 x [2, 21, 23, 26, 28, 37] 10 x [9, 27, 30] 6 x [13, 28, 30, 36] 1 x [12, 16, 30] 7 x [16, 28, 29, 30] 1 x [1, 5, 27, 36] 11 x [5, 11, 28, 29] 39 x [5, 16, 31] 34 x [5, 12, 29, 31] 1 x [7, 9, 13, 24] 44 x [6, 17, 18] 43 x [3, 6, 12] 32 x [3, 18, 19] 20 x [3, 24, 36] 1 x [12, 16, 17, 38] 3 x [7, 17, 24, 38] 66 x [7, 24, 32, 38] 1 x [7, 17, 19, 28, 29] 1 x [7, 17, 19, 29]