Build (method = -2) #dp: 637 Step-3' Graph: 47 vertices and 264 arcs (0.00s) Step-4' Graph: 28 vertices and 226 arcs (0.00s) #V4/#V3 = 0.60 #A4/#A3 = 0.86 Ready! (0.00s) Optimize a model with 68 rows, 227 columns and 632 nonzeros Presolve removed 29 rows and 33 columns Presolve time: 0.00s Presolved: 39 rows, 194 columns, 537 nonzeros Variable types: 0 continuous, 194 integer (0 binary) Found heuristic solution: objective 3976.0000000 Found heuristic solution: objective 2514.0000000 Optimize a model with 39 rows, 194 columns and 537 nonzeros Presolved: 39 rows, 194 columns, 537 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 2.380e+02 Factor NZ : 5.960e+02 Factor Ops : 1.081e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.69928047e+04 -3.21616311e+04 7.43e+04 2.22e-16 6.60e+02 0s 1 5.91213865e+03 -1.17751790e+04 8.75e+03 6.66e-16 9.81e+01 0s 2 3.36095222e+03 -1.21478424e+03 1.91e+02 1.11e-15 1.21e+01 0s 3 2.85858179e+03 1.24077157e+03 1.45e+00 5.69e-16 4.03e+00 0s 4 2.49698004e+03 2.21012847e+03 1.17e-01 5.55e-16 7.14e-01 0s 5 2.44156183e+03 2.40446851e+03 1.83e-02 3.33e-16 9.23e-02 0s 6 2.43355402e+03 2.43326428e+03 7.39e-05 4.35e-16 7.21e-04 0s 7 2.43350000e+03 2.43350000e+03 1.53e-10 3.96e-16 1.54e-09 0s 8 2.43350000e+03 2.43350000e+03 2.27e-12 3.33e-16 1.54e-12 0s Barrier solved model in 8 iterations and 0.00 seconds Optimal objective 2.43350000e+03 Root relaxation: objective 2.433500e+03, 91 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2433.50000 0 2 2514.00000 2433.50000 3.20% - 0s H 0 0 2434.0000000 2433.50000 0.02% - 0s Explored 0 nodes (123 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 2.434000000000e+03, best bound 2.434000000000e+03, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.01 seconds Total run time: 0.02 seconds Objective: 2434 Solution: 33 x [4] 22 x [4, 24] 136 x [3] 164 x [34] 50 x [36] 32 x [32, 36] 158 x [30] 123 x [15, 31] 73 x [5] 46 x [5, 31] 13 x [22] 132 x [20, 32] 115 x [17, 19] 27 x [18] 5 x [18, 32] 153 x [11, 12] 11 x [6] 32 x [6, 17] 69 x [6, 10] 51 x [2] 31 x [2, 7] 151 x [1, 7] 5 x [33, 38] 23 x [33, 35] 51 x [28, 38] 126 x [27, 37] 31 x [27, 35] 70 x [26, 35] 13 x [23] 120 x [21, 38] 52 x [16] 50 x [16, 29] 76 x [14] 3 x [14, 38] 17 x [12, 14] 22 x [9, 14] 10 x [13] 47 x [8, 13] 31 x [13, 39] 48 x [25, 40] 1 x [25] 11 x [25, 25]