Build (method = -2) #dp: 693 Step-3' Graph: 48 vertices and 278 arcs (0.00s) Step-4' Graph: 35 vertices and 252 arcs (0.00s) #V4/#V3 = 0.73 #A4/#A3 = 0.91 Ready! (0.00s) Optimize a model with 74 rows, 253 columns and 696 nonzeros Presolve removed 25 rows and 26 columns Presolve time: 0.00s Presolved: 49 rows, 227 columns, 621 nonzeros Variable types: 0 continuous, 227 integer (0 binary) Found heuristic solution: objective 3895.0000000 Found heuristic solution: objective 3146.0000000 Optimize a model with 49 rows, 227 columns and 621 nonzeros Presolved: 49 rows, 227 columns, 621 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 3.060e+02 Factor NZ : 8.050e+02 Factor Ops : 1.662e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 2.45801037e+04 -3.64021327e+04 1.10e+05 2.22e-16 7.33e+02 0s 1 8.04639653e+03 -1.22574868e+04 1.52e+04 5.55e-16 1.17e+02 0s 2 3.75537740e+03 -1.50899017e+03 4.06e+02 9.99e-16 1.25e+01 0s 3 3.08251242e+03 1.52668531e+03 1.37e+01 6.66e-16 3.33e+00 0s 4 2.86118359e+03 2.68218826e+03 9.27e-01 5.00e-16 3.82e-01 0s 5 2.84046587e+03 2.83455139e+03 1.02e-01 5.39e-16 1.27e-02 0s 6 2.83800279e+03 2.83799809e+03 1.06e-04 6.16e-16 1.01e-05 0s 7 2.83800000e+03 2.83800000e+03 1.21e-10 5.29e-16 1.02e-11 0s Barrier solved model in 7 iterations and 0.00 seconds Optimal objective 2.83800000e+03 Root relaxation: objective 2.838000e+03, 89 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 2838.0000000 2838.00000 0.0% - 0s Explored 0 nodes (89 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 2.838000000000e+03, best bound 2.838000000000e+03, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.01 seconds Total run time: 0.02 seconds Objective: 2838 Solution: 78 x [5] 181 x [3] 168 x [20] 195 x [14] 12 x [15] 84 x [6, 15] 31 x [9] 54 x [9, 21] 10 x [2] 131 x [21, 39] 32 x [37] 63 x [34, 37] 184 x [36] 102 x [35] 114 x [33] 184 x [30] 9 x [29] 41 x [7, 29] 30 x [26] 8 x [10, 26] 38 x [24] 1 x [10, 24] 98 x [23, 24] 23 x [24, 32] 136 x [22] 8 x [10, 22] 31 x [22, 28, 28] 32 x [19] 11 x [18] 105 x [16, 18] 38 x [4, 18] 6 x [13] 27 x [13, 38] 94 x [13, 17] 71 x [10, 12] 154 x [11] 11 x [11, 25] 4 x [10, 11] 30 x [1, 11] 71 x [8, 31] 122 x [8, 27] 16 x [27, 27]