Build (method = -2) #dp: 3279 Step-3' Graph: 735 vertices and 2198 arcs (0.03s) Step-4' Graph: 287 vertices and 1302 arcs (0.03s) #V4/#V3 = 0.39 #A4/#A3 = 0.59 Ready! (0.03s) Optimize a model with 327 rows, 1303 columns and 3339 nonzeros Presolve removed 68 rows and 98 columns Presolve time: 0.02s Presolved: 259 rows, 1205 columns, 3303 nonzeros Variable types: 0 continuous, 1205 integer (165 binary) Found heuristic solution: objective 296.0000000 Optimize a model with 259 rows, 1205 columns and 3303 nonzeros Presolved: 259 rows, 1205 columns, 3303 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 2.048e+03 Factor NZ : 7.721e+03 Factor Ops : 3.172e+05 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 2.87043149e+03 -1.64131629e+04 3.59e+04 1.12e-01 8.25e+01 0s 1 8.09103764e+02 -8.27398438e+03 3.93e+03 6.66e-16 1.12e+01 0s 2 4.38211115e+02 -2.78458965e+03 5.34e+02 1.33e-15 2.16e+00 0s 3 3.50813689e+02 -7.66084369e+02 1.09e+02 2.89e-15 5.86e-01 0s 4 2.99451584e+02 -5.33601707e+02 1.66e+01 2.33e-15 3.60e-01 0s 5 2.62793068e+02 -2.27892068e+02 5.85e+00 1.33e-15 2.07e-01 0s 6 2.42081234e+02 1.40518735e+01 2.32e+00 6.66e-16 9.54e-02 0s 7 2.25461230e+02 1.38343004e+02 1.04e+00 3.26e-16 3.64e-02 0s 8 2.14080132e+02 1.74849453e+02 1.94e-01 3.50e-16 1.63e-02 0s 9 2.11166570e+02 2.10038557e+02 1.02e-03 3.53e-16 4.65e-04 0s 10 2.11000171e+02 2.10999034e+02 9.35e-14 4.09e-16 4.68e-07 0s 11 2.11000000e+02 2.11000000e+02 1.14e-13 4.47e-16 5.56e-13 0s Barrier solved model in 11 iterations and 0.02 seconds Optimal objective 2.11000000e+02 Root relaxation: objective 2.110000e+02, 467 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 211.0000000 211.00000 0.0% - 0s Explored 0 nodes (467 simplex iterations) in 0.05 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 2.110000000000e+02, best bound 2.110000000000e+02, gap 0.0% Preprocessing time: 0.04 seconds Gurobi run time: 0.05 seconds Total run time: 0.09 seconds Objective: 211 Solution: 7 x [1] 1 x [1, 38] 2 x [2] 6 x [2, 33] 3 x [2, 39] 4 x [3, 32] 13 x [3, 37] 8 x [4] 1 x [5, 40] 2 x [6] 2 x [7] 8 x [7, 37] 1 x [8] 12 x [8, 28] 7 x [8, 29] 8 x [9, 27] 5 x [9, 28] 8 x [9, 35] 9 x [10, 25] 5 x [11, 22] 9 x [11, 23] 3 x [11, 25] 3 x [12] 1 x [12, 21] 2 x [12, 23] 10 x [12, 26] 5 x [13] 2 x [13, 23] 8 x [13, 30] 3 x [14, 19] 9 x [14, 20] 8 x [14, 24] 1 x [15, 20] 14 x [15, 33] 6 x [16, 17] 4 x [17, 18, 36] 8 x [17, 27, 29] 1 x [17, 31] 2 x [17, 34]