Build (method = -2) #dp: 4562 Step-3' Graph: 79 vertices and 520 arcs (0.02s) Step-4' Graph: 43 vertices and 448 arcs (0.02s) #V4/#V3 = 0.54 #A4/#A3 = 0.86 Ready! (0.02s) Optimize a model with 103 rows, 449 columns and 1267 nonzeros Presolve removed 10 rows and 12 columns Presolve time: 0.00s Presolved: 93 rows, 437 columns, 1235 nonzeros Variable types: 0 continuous, 437 integer (0 binary) Found heuristic solution: objective 4395.0000000 Found heuristic solution: objective 3830.0000000 Optimize a model with 93 rows, 437 columns and 1235 nonzeros Presolved: 93 rows, 437 columns, 1235 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 7.410e+02 Factor NZ : 1.788e+03 Factor Ops : 3.984e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.02707355e+05 -1.53159959e+05 6.36e+04 2.22e-16 1.18e+03 0s 1 2.58706143e+04 -3.10594178e+04 9.90e+03 5.55e-16 1.84e+02 0s 2 5.98360640e+03 -1.15655810e+04 9.90e+02 3.33e-15 2.91e+01 0s 3 2.79134739e+03 -2.70585661e+03 1.53e+01 3.28e-15 6.02e+00 0s 4 1.93039424e+03 -2.54791008e+02 4.61e+00 2.48e-15 2.37e+00 0s 5 1.59324967e+03 7.64829045e+02 1.48e+00 2.69e-15 8.96e-01 0s 6 1.52606850e+03 1.37546108e+03 5.02e-01 2.11e-15 1.63e-01 0s 7 1.50312753e+03 1.50072642e+03 1.62e-02 2.56e-15 2.59e-03 0s 8 1.50233413e+03 1.50233173e+03 2.50e-12 3.07e-15 2.59e-06 0s 9 1.50233333e+03 1.50233333e+03 3.01e-12 2.44e-15 2.60e-12 0s Barrier solved model in 9 iterations and 0.00 seconds Optimal objective 1.50233333e+03 Root relaxation: objective 1.502333e+03, 298 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 1502.33333 0 12 3830.00000 1502.33333 60.8% - 0s H 0 0 1503.0000000 1502.33333 0.04% - 0s Explored 0 nodes (427 simplex iterations) in 0.02 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.503000000000e+03, best bound 1.503000000000e+03, gap 0.0% Preprocessing time: 0.03 seconds Gurobi run time: 0.02 seconds Total run time: 0.04 seconds Objective: 1503 Solution: 33 x [1, 32] 17 x [45, 52] 58 x [46, 52] 24 x [1, 1, 52] 50 x [8, 49, 55] 1 x [5, 27, 38] 23 x [5, 13, 45] 1 x [5, 49, 55] 64 x [27, 28, 38] 17 x [27, 34, 46] 5 x [27, 34, 38] 64 x [23, 40, 44] 1 x [33, 49, 50] 77 x [9, 41, 50] 6 x [18, 44, 50] 77 x [16, 54, 60] 99 x [6, 30, 35] 73 x [19, 36, 48] 50 x [39, 39, 45] 68 x [31, 42, 53] 11 x [43, 49, 57] 86 x [17, 22, 59] 3 x [22, 47, 48] 1 x [7, 18] 38 x [7, 7, 18] 72 x [3, 26, 58] 18 x [12, 26, 33] 51 x [11, 12, 47] 3 x [11, 12, 48] 15 x [9, 14, 21] 84 x [21, 29, 56] 12 x [15, 20, 49] 2 x [14, 20, 33] 66 x [4, 10, 15] 10 x [16, 37, 51] 1 x [43, 49, 51] 70 x [2, 25, 51] 7 x [14, 43, 56] 2 x [14, 43, 48] 52 x [13, 14, 43] 1 x [11, 33] 3 x [11, 31, 33] 4 x [11, 33, 40] 1 x [11, 18, 33] 28 x [11, 33, 55] 14 x [17, 33, 60] 3 x [24, 29, 47] 34 x [24, 24, 47] 1 x [10, 33, 36] 2 x [25, 33, 53]