Build (method = -2) #dp: 6048 Step-3' Graph: 97 vertices and 1313 arcs (0.02s) Step-4' Graph: 97 vertices and 1313 arcs (0.02s) #V4/#V3 = 1.00 #A4/#A3 = 1.00 Ready! (0.02s) Optimize a model with 137 rows, 1314 columns and 3797 nonzeros Presolve removed 13 rows and 15 columns Presolve time: 0.01s Presolved: 124 rows, 1299 columns, 3756 nonzeros Variable types: 0 continuous, 1299 integer (0 binary) Found heuristic solution: objective 1361.0000000 Found heuristic solution: objective 1170.0000000 Optimize a model with 124 rows, 1299 columns and 3756 nonzeros Presolved: 124 rows, 1299 columns, 3756 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 2.390e+03 Factor NZ : 4.461e+03 Factor Ops : 2.068e+05 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.58025881e+04 -5.06888178e+04 4.33e+04 2.22e-16 2.63e+02 0s 1 4.58645456e+03 -2.67491496e+04 7.12e+03 4.44e-16 4.82e+01 0s 2 1.82863235e+03 -1.07837638e+04 8.45e+02 1.69e-14 8.22e+00 0s 3 1.38340933e+03 -2.47394293e+03 1.93e+01 3.55e-15 1.51e+00 0s 4 1.18394833e+03 -1.07118198e+03 6.46e+00 2.55e-15 8.68e-01 0s 5 1.01957989e+03 -1.87207924e+02 3.63e+00 1.33e-15 4.63e-01 0s 6 8.62809040e+02 1.89089179e+02 1.51e+00 1.10e-15 2.58e-01 0s 7 7.96095151e+02 3.21946626e+02 9.02e-01 1.56e-15 1.81e-01 0s 8 7.29896354e+02 5.66683881e+02 3.54e-01 1.37e-15 6.23e-02 0s 9 7.00543806e+02 6.34017967e+02 1.42e-01 1.39e-15 2.54e-02 0s 10 6.83808476e+02 6.59024779e+02 4.42e-02 1.20e-15 9.45e-03 0s 11 6.79945220e+02 6.68604578e+02 2.67e-02 1.40e-15 4.32e-03 0s 12 6.74793489e+02 6.71471318e+02 4.44e-03 1.58e-15 1.27e-03 0s 13 6.73742751e+02 6.73629211e+02 1.10e-04 9.99e-16 4.32e-05 0s 14 6.73708338e+02 6.73708325e+02 1.56e-08 1.23e-15 4.99e-09 0s 15 6.73708333e+02 6.73708333e+02 6.82e-13 1.25e-15 4.99e-12 0s Barrier solved model in 15 iterations and 0.02 seconds Optimal objective 6.73708333e+02 Root relaxation: objective 6.737083e+02, 292 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 673.70833 0 18 1170.00000 673.70833 42.4% - 0s H 0 0 675.0000000 673.70833 0.19% - 0s H 0 0 674.0000000 673.70833 0.04% - 0s Explored 0 nodes (694 simplex iterations) in 0.08 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 6.740000000000e+02, best bound 6.740000000000e+02, gap 0.0% Preprocessing time: 0.04 seconds Gurobi run time: 0.08 seconds Total run time: 0.12 seconds Objective: 674 Solution: 89 x [13] 9 x [7] 43 x [7, 21] 1 x [7, 34] 6 x [39] 20 x [1, 39] 21 x [10, 34, 39] 4 x [9, 14, 39] 9 x [36, 36, 39] 31 x [2, 12] 7 x [27] 1 x [12, 27] 3 x [14, 27] 4 x [27, 36] 1 x [15, 33] 2 x [15, 31] 20 x [3, 10, 15] 19 x [19, 35] 31 x [5, 35] 42 x [29, 37] 26 x [28, 29] 6 x [4, 22, 29] 8 x [18, 29, 36] 12 x [11, 29, 36] 12 x [8, 38] 5 x [8, 10, 38] 45 x [8, 24] 77 x [6, 26] 6 x [3, 6, 11] 6 x [3, 20, 24] 14 x [14, 17, 23] 13 x [3, 17, 25] 3 x [17, 17] 1 x [17, 17, 36] 6 x [16, 19, 23] 5 x [11, 16, 23] 14 x [3, 3, 3, 23] 36 x [30, 33, 40] 1 x [3, 30, 40] 1 x [11, 30] 3 x [11, 32, 40] 2 x [16, 40, 40] 3 x [3, 11, 11, 24] 6 x [24, 24, 24]