Build (method = -2) #dp: 3837 Step-3' Graph: 95 vertices and 644 arcs (0.02s) Step-4' Graph: 73 vertices and 600 arcs (0.02s) #V4/#V3 = 0.77 #A4/#A3 = 0.93 Ready! (0.02s) Optimize a model with 113 rows, 601 columns and 1664 nonzeros Presolve removed 11 rows and 14 columns Presolve time: 0.00s Presolved: 102 rows, 587 columns, 1628 nonzeros Variable types: 0 continuous, 587 integer (0 binary) Found heuristic solution: objective 2668.0000000 Found heuristic solution: objective 2368.0000000 Optimize a model with 102 rows, 587 columns and 1628 nonzeros Presolved: 102 rows, 587 columns, 1628 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.034e+03 Factor NZ : 2.853e+03 Factor Ops : 9.776e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 4.16255685e+04 -1.24780749e+05 7.85e+04 2.22e-16 7.25e+02 0s 1 1.15897425e+04 -3.97553813e+04 1.24e+04 7.77e-16 1.24e+02 0s 2 3.34725299e+03 -1.41246757e+04 1.18e+03 3.77e-15 2.05e+01 0s 3 1.96141086e+03 -3.89537337e+03 2.68e+01 1.11e-15 4.93e+00 0s 4 1.27505297e+03 -1.22200418e+03 4.41e+00 6.11e-16 2.08e+00 0s 5 1.06783223e+03 2.71520307e+02 2.14e+00 5.57e-16 6.62e-01 0s 6 9.69589356e+02 6.36501957e+02 8.31e-01 5.27e-16 2.77e-01 0s 7 9.17405843e+02 7.41875575e+02 2.42e-01 7.03e-16 1.46e-01 0s 8 8.96308643e+02 8.43281360e+02 4.19e-02 7.18e-16 4.40e-02 0s 9 8.89252028e+02 8.71634694e+02 1.05e-02 5.02e-16 1.46e-02 0s 10 8.87006660e+02 8.82573573e+02 2.36e-03 5.60e-16 3.68e-03 0s 11 8.86308215e+02 8.86153005e+02 2.52e-05 4.86e-16 1.29e-04 0s 12 8.86250059e+02 8.86249610e+02 2.96e-12 7.77e-16 3.72e-07 0s 13 8.86250000e+02 8.86250000e+02 9.09e-13 5.80e-16 3.74e-13 0s Barrier solved model in 13 iterations and 0.01 seconds Optimal objective 8.86250000e+02 Root relaxation: objective 8.862500e+02, 299 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 886.25000 0 53 2368.00000 886.25000 62.6% - 0s H 0 0 890.0000000 886.25000 0.42% - 0s H 0 0 888.0000000 886.25000 0.20% - 0s 0 0 886.25000 0 66 888.00000 886.25000 0.20% - 0s H 0 0 887.0000000 886.25000 0.08% - 0s Cutting planes: Gomory: 2 MIR: 1 Explored 0 nodes (483 simplex iterations) in 0.08 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 8.870000000000e+02, best bound 8.870000000000e+02, gap 0.0% Preprocessing time: 0.03 seconds Gurobi run time: 0.08 seconds Total run time: 0.11 seconds Objective: 887 Solution: 42 x [4, 24, 38] 15 x [24, 35, 35, 38] 45 x [16, 17] 39 x [9, 11] 3 x [4, 9, 14, 31] 29 x [14, 28, 30] 12 x [2, 4, 14, 30] 48 x [12, 15, 29] 25 x [12, 29, 35, 35] 3 x [4, 12, 24, 28] 1 x [4, 12, 28] 22 x [4, 12, 14, 27] 32 x [25, 39] 8 x [25, 28, 28] 20 x [5, 5, 5, 25] 26 x [8, 16, 36] 32 x [8, 14, 21, 27] 2 x [8, 16, 27, 27] 1 x [34] 73 x [20, 34] 11 x [34, 34] 11 x [16, 26, 32] 34 x [26, 37, 39] 4 x [13, 26, 27, 28] 1 x [13, 23, 26, 28] 64 x [32, 33, 37] 1 x [16, 19, 27, 32] 4 x [3, 13, 21, 28] 13 x [16, 18, 28, 36] 2 x [16, 18, 27, 36] 41 x [6, 9, 18, 36] 6 x [4, 18, 18, 28] 18 x [1, 13, 23, 33] 14 x [7, 10, 22] 24 x [5, 7, 22, 27] 5 x [5, 6, 7, 22] 34 x [6, 19, 22, 23] 1 x [2, 19, 22] 2 x [1, 13, 22, 28] 29 x [7, 19, 24, 40] 1 x [1, 7, 14, 40] 21 x [2, 2, 7, 40] 45 x [2, 10, 21, 40] 14 x [1, 1, 19, 23] 9 x [1, 1, 10, 27]