Build (method = -2) #dp: 673 Step-3' Graph: 55 vertices and 313 arcs (0.00s) Step-4' Graph: 33 vertices and 269 arcs (0.00s) #V4/#V3 = 0.60 #A4/#A3 = 0.86 Ready! (0.00s) Optimize a model with 73 rows, 270 columns and 751 nonzeros Presolve removed 28 rows and 38 columns Presolve time: 0.00s Presolved: 45 rows, 232 columns, 641 nonzeros Variable types: 0 continuous, 232 integer (0 binary) Found heuristic solution: objective 3727.0000000 Found heuristic solution: objective 2780.0000000 Optimize a model with 45 rows, 232 columns and 641 nonzeros Presolved: 45 rows, 232 columns, 641 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 2.680e+02 Factor NZ : 6.180e+02 Factor Ops : 1.039e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.92124998e+04 -2.97681136e+04 1.05e+05 2.22e-16 6.14e+02 0s 1 6.24443337e+03 -1.31599484e+04 1.11e+04 6.66e-16 8.73e+01 0s 2 3.53492130e+03 -2.06099165e+03 1.55e+02 1.33e-15 1.20e+01 0s 3 2.83614835e+03 3.10138580e+02 7.27e-01 7.77e-16 5.26e+00 0s 4 2.43481454e+03 1.97662009e+03 4.09e-02 2.50e-16 9.55e-01 0s 5 2.35262642e+03 2.27142754e+03 1.56e-02 2.22e-16 1.69e-01 0s 6 2.32509120e+03 2.31565462e+03 1.76e-03 3.33e-16 1.97e-02 0s 7 2.32200997e+03 2.32197908e+03 3.06e-06 3.82e-16 6.43e-05 0s 8 2.32200001e+03 2.32199998e+03 1.10e-11 3.33e-16 6.43e-08 0s 9 2.32200000e+03 2.32200000e+03 1.06e-10 2.22e-16 6.52e-14 0s Barrier solved model in 9 iterations and 0.00 seconds Optimal objective 2.32200000e+03 Root relaxation: objective 2.322000e+03, 102 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 2322.0000000 2322.00000 0.0% - 0s Explored 0 nodes (102 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 2.322000000000e+03, best bound 2.322000000000e+03, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.01 seconds Total run time: 0.02 seconds Objective: 2322 Solution: 193 x [3] 53 x [2] 94 x [2, 23] 32 x [39] 72 x [31, 39] 20 x [10] 107 x [28, 31] 97 x [4, 36] 23 x [7, 20] 130 x [7, 19] 45 x [11, 18] 27 x [9, 18] 78 x [17] 9 x [9, 17] 2 x [4, 17] 24 x [5, 16] 7 x [5, 7] 3 x [4, 5] 173 x [38] 74 x [29, 33] 3 x [25, 33] 161 x [25, 32] 73 x [1, 24] 87 x [24, 40] 20 x [30] 8 x [1, 30] 9 x [25, 30] 132 x [16, 30] 30 x [14, 15] 20 x [14, 35] 1 x [14, 29] 84 x [12, 13] 7 x [12, 29] 68 x [8, 22] 96 x [8, 21] 1 x [8, 29] 10 x [26] 45 x [6, 26] 65 x [37] 68 x [6, 37] 65 x [27, 34] 6 x [21, 34]