Build (method = -2) #dp: 698 Step-3' Graph: 170 vertices and 503 arcs (0.00s) Step-4' Graph: 83 vertices and 329 arcs (0.00s) #V4/#V3 = 0.49 #A4/#A3 = 0.65 Ready! (0.00s) Optimize a model with 103 rows, 330 columns and 828 nonzeros Presolve removed 23 rows and 48 columns Presolve time: 0.00s Presolved: 80 rows, 282 columns, 764 nonzeros Variable types: 0 continuous, 282 integer (0 binary) Found heuristic solution: objective 993.0000000 Optimize a model with 80 rows, 282 columns and 764 nonzeros Presolved: 80 rows, 282 columns, 764 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 5.030e+02 Factor NZ : 1.592e+03 Factor Ops : 3.727e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 5.98455078e+03 -3.16838570e+04 3.76e+04 2.22e-16 3.50e+02 0s 1 2.67951393e+03 -1.23558932e+04 8.05e+03 4.44e-16 7.77e+01 0s 2 1.31607563e+03 -3.65977143e+03 6.11e+02 1.02e-14 1.16e+01 0s 3 9.41042413e+02 -3.49954437e+02 3.10e+01 2.33e-15 2.33e+00 0s 4 8.22299146e+02 2.37812260e+02 5.39e+00 1.11e-15 1.03e+00 0s 5 7.41719369e+02 5.29712190e+02 8.71e-01 5.55e-16 3.70e-01 0s 6 7.24922650e+02 6.69083199e+02 4.39e-01 2.39e-16 9.74e-02 0s 7 7.12072654e+02 6.92900848e+02 5.00e-02 3.33e-16 3.34e-02 0s 8 7.09411845e+02 7.08651628e+02 4.49e-04 3.00e-16 1.32e-03 0s 9 7.09182154e+02 7.09180932e+02 1.14e-12 3.06e-16 2.13e-06 0s 10 7.09181819e+02 7.09181817e+02 4.20e-12 1.96e-16 2.13e-09 0s 11 7.09181818e+02 7.09181818e+02 5.31e-12 2.22e-16 2.38e-15 0s Barrier solved model in 11 iterations and 0.00 seconds Optimal objective 7.09181818e+02 Root relaxation: objective 7.091818e+02, 77 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 709.18182 0 17 993.00000 709.18182 28.6% - 0s H 0 0 711.0000000 709.18182 0.26% - 0s H 0 0 710.0000000 709.18182 0.12% - 0s Explored 0 nodes (149 simplex iterations) in 0.02 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 7.100000000000e+02, best bound 7.100000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.02 seconds Total run time: 0.03 seconds Objective: 710 Solution: 6 x [1, 16] 44 x [1, 17] 17 x [2, 15, 19] 53 x [2, 15, 20] 63 x [3, 10] 74 x [3, 11] 1 x [3, 18] 7 x [4, 15, 16] 91 x [5, 12, 18] 96 x [6, 9] 83 x [6, 16, 17, 19] 44 x [7, 8] 18 x [7, 11, 16] 20 x [7, 12, 15] 28 x [8, 11, 15, 18] 26 x [8, 12, 15, 18] 10 x [8, 13, 16, 17] 4 x [8, 15, 16, 17] 2 x [8, 15, 16, 17, 19] 22 x [12, 14, 15, 16, 17] 1 x [15, 16]