Build (method = -2) #dp: 563 Step-3' Graph: 125 vertices and 368 arcs (0.00s) Step-4' Graph: 36 vertices and 190 arcs (0.00s) #V4/#V3 = 0.29 #A4/#A3 = 0.52 Ready! (0.00s) Optimize a model with 72 rows, 191 columns and 505 nonzeros Presolve removed 35 rows and 64 columns Presolve time: 0.00s Presolved: 37 rows, 127 columns, 299 nonzeros Variable types: 0 continuous, 127 integer (0 binary) Found heuristic solution: objective 3632.0000000 Found heuristic solution: objective 3039.0000000 Optimize a model with 37 rows, 127 columns and 299 nonzeros Presolved: 37 rows, 127 columns, 299 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.600e+02 Factor NZ : 4.530e+02 Factor Ops : 6.455e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.02275745e+04 -1.79012099e+04 1.92e+04 2.22e-16 5.71e+02 0s 1 4.67283431e+03 -6.06992531e+03 2.18e+03 3.33e-16 8.38e+01 0s 2 3.42758372e+03 6.34345048e+02 4.71e+01 4.31e-14 1.10e+01 0s 3 2.97910141e+03 2.24340674e+03 4.96e-01 9.21e-15 2.76e+00 0s 4 2.83497356e+03 2.75755666e+03 2.14e-02 3.05e-16 2.90e-01 0s 5 2.82431183e+03 2.82329666e+03 4.20e-04 3.33e-16 3.80e-03 0s 6 2.82400000e+03 2.82400000e+03 2.61e-09 2.62e-16 2.29e-08 0s 7 2.82400000e+03 2.82400000e+03 1.14e-13 3.33e-16 2.32e-14 0s Barrier solved model in 7 iterations and 0.00 seconds Optimal objective 2.82400000e+03 Root relaxation: objective 2.824000e+03, 76 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 2824.0000000 2824.00000 0.0% - 0s Explored 0 nodes (76 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 2.824000000000e+03, best bound 2.824000000000e+03, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.01 seconds Total run time: 0.02 seconds Objective: 2824 Solution: 163 x [1] 128 x [2] 41 x [3] 63 x [3, 36] 197 x [4] 141 x [5] 29 x [6] 36 x [6, 34] 90 x [6, 35] 184 x [7] 160 x [8, 32] 13 x [8, 33] 157 x [9] 3 x [9, 33] 112 x [10] 108 x [11, 30] 191 x [12] 4 x [13] 25 x [13, 30] 86 x [14, 28] 47 x [15] 111 x [15, 26] 1 x [15, 28] 31 x [15, 31] 66 x [16] 84 x [16, 24] 14 x [17] 4 x [18] 167 x [18, 23] 7 x [18, 25] 97 x [19] 49 x [19, 23] 1 x [20] 4 x [20, 27] 138 x [20, 29] 31 x [21] 41 x [22]