Build (method = -2) #dp: 1290 Step-3' Graph: 40 vertices and 246 arcs (0.00s) Step-4' Graph: 29 vertices and 224 arcs (0.00s) #V4/#V3 = 0.72 #A4/#A3 = 0.91 Ready! (0.00s) Optimize a model with 69 rows, 225 columns and 623 nonzeros Presolve removed 18 rows and 21 columns Presolve time: 0.00s Presolved: 51 rows, 204 columns, 565 nonzeros Variable types: 0 continuous, 204 integer (0 binary) Found heuristic solution: objective 647.0000000 Found heuristic solution: objective 539.0000000 Optimize a model with 51 rows, 204 columns and 565 nonzeros Presolved: 51 rows, 204 columns, 565 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 3.330e+02 Factor NZ : 8.230e+02 Factor Ops : 1.540e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 4.86704534e+03 -7.15690507e+03 4.13e+03 2.22e-16 1.05e+02 0s 1 1.32822508e+03 -2.22459445e+03 5.24e+02 5.55e-16 1.65e+01 0s 2 5.02501563e+02 -4.73381513e+02 1.17e+01 1.10e-14 2.37e+00 0s 3 3.61074397e+02 6.85645347e+01 5.72e-01 2.66e-15 6.79e-01 0s 4 3.20564705e+02 2.23370653e+02 1.12e-01 6.66e-16 2.25e-01 0s 5 3.04054808e+02 2.72256988e+02 3.37e-02 1.18e-16 7.36e-02 0s 6 2.99264185e+02 2.96342151e+02 8.72e-03 3.33e-16 6.77e-03 0s 7 2.98501580e+02 2.98497420e+02 2.19e-05 2.42e-16 9.66e-06 0s 8 2.98500002e+02 2.98499997e+02 4.83e-13 2.22e-16 9.66e-09 0s 9 2.98500000e+02 2.98500000e+02 5.12e-13 2.22e-16 1.06e-14 0s Barrier solved model in 9 iterations and 0.00 seconds Optimal objective 2.98500000e+02 Root relaxation: objective 2.985000e+02, 114 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 298.50000 0 10 539.00000 298.50000 44.6% - 0s H 0 0 300.0000000 298.50000 0.50% - 0s H 0 0 299.0000000 298.50000 0.17% - 0s Explored 0 nodes (131 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 2.990000000000e+02, best bound 2.990000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.01 seconds Total run time: 0.02 seconds Objective: 299 Solution: 1 x [30] 1 x [30, 33] 2 x [30, 33, 33] 12 x [5, 35] 17 x [17, 37] 1 x [39] 2 x [35, 38, 39] 9 x [35, 35, 39] 14 x [31] 11 x [13, 13, 31] 4 x [2, 2, 31] 19 x [18, 29] 19 x [8, 34] 11 x [9, 9, 34] 3 x [14, 15, 40] 1 x [9, 14, 21] 8 x [10, 11, 19] 2 x [11, 15, 19] 14 x [21, 23, 37] 2 x [4, 37, 38] 2 x [4, 38] 1 x [4, 15] 7 x [12, 15, 32] 15 x [1, 25] 18 x [11, 25, 38] 4 x [15, 18, 36] 2 x [12, 15, 36] 1 x [15, 36] 6 x [16, 27] 3 x [15, 16, 22] 1 x [1, 16] 8 x [1, 13, 16] 1 x [1, 15, 16] 23 x [7, 26] 4 x [6, 28] 9 x [15, 24, 28] 22 x [3, 20] 5 x [20, 20] 1 x [28] 10 x [26, 28] 3 x [28, 28]