Build (method = -2) #dp: 3463 Step-3' Graph: 112 vertices and 353 arcs (0.01s) Step-4' Graph: 28 vertices and 185 arcs (0.01s) #V4/#V3 = 0.25 #A4/#A3 = 0.52 Ready! (0.01s) Optimize a model with 108 rows, 186 columns and 507 nonzeros Presolve removed 27 rows and 28 columns Presolve time: 0.00s Presolved: 81 rows, 158 columns, 426 nonzeros Variable types: 0 continuous, 158 integer (0 binary) Found heuristic solution: objective 2.750000e+08 Optimize a model with 81 rows, 158 columns and 426 nonzeros Presolved: 81 rows, 158 columns, 426 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 2.370e+02 Factor NZ : 1.130e+03 Factor Ops : 2.319e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 3.72148959e+08 -8.91989213e+09 8.65e+09 2.22e-16 1.42e+08 0s 1 3.17228766e+08 -2.72113236e+09 1.63e+09 8.88e-16 2.76e+07 0s 2 2.76173785e+08 -3.86219178e+08 4.80e+07 1.44e-15 2.23e+06 0s 3 2.74918208e+08 8.73932454e+07 1.58e+06 7.22e-16 5.11e+05 0s 4 2.66191182e+08 2.31862827e+08 1.49e-07 6.94e-16 9.25e+04 0s 5 2.50336216e+08 2.47272381e+08 1.79e-07 5.57e-16 8.26e+03 0s 6 2.50001222e+08 2.49997233e+08 7.45e-08 1.32e-09 1.08e+01 0s 7 2.50000000e+08 2.50000000e+08 2.98e-08 1.17e-11 2.60e-05 0s Barrier solved model in 7 iterations and 0.00 seconds Optimal objective 2.50000000e+08 Warning: Markowitz tolerance tightened to 0.5 Root relaxation: objective 2.500000e+08, 157 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 2.500000e+08 2.5000e+08 0.0% - 0s Explored 0 nodes (157 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 2.500000000000e+08, best bound 2.500000000000e+08, gap 0.0% Preprocessing time: 0.02 seconds Gurobi run time: 0.01 seconds Total run time: 0.03 seconds Objective: 250000000 Solution: 1000000 x [20, 80] 8000000 x [17, 80] 4000000 x [23, 79] 5000000 x [33, 78] 1000000 x [11, 78] 7000000 x [34, 77] 1000000 x [11, 77] 1000000 x [11, 76] 6000000 x [9, 76] 5000000 x [16, 75] 1000000 x [8, 75] 7000000 x [35, 74] 1000000 x [8, 74] 7000000 x [32, 73] 1000000 x [1, 73] 1000000 x [39, 72] 6000000 x [36, 72] 6000000 x [40, 71] 5000000 x [10, 70] 5000000 x [14, 69] 1000000 x [1, 69] 1000000 x [43, 68] 10000000 x [37, 68] 8000000 x [7, 67] 1000000 x [1, 67] 3000000 x [44, 66] 4000000 x [43, 65] 3000000 x [41, 64] 6000000 x [42, 63] 2000000 x [38, 63] 3000000 x [47, 62] 8000000 x [18, 62] 5000000 x [48, 61] 4000000 x [21, 60] 1000000 x [50, 59] 8000000 x [4, 59] 4000000 x [52, 58] 1000000 x [1, 58] 7000000 x [53, 57] 1000000 x [54, 56] 1000000 x [53, 56] 3000000 x [49, 56] 10000000 x [54, 55] 6000000 x [50, 51] 6000000 x [45, 46] 2000000 x [39, 46] 7000000 x [2, 44] 1000000 x [1, 44] 7000000 x [24, 31] 3000000 x [19, 30] 10000000 x [6, 30] 8000000 x [25, 29] 1000000 x [20, 28] 6000000 x [12, 28] 4000000 x [26, 27] 3000000 x [15, 25] 1000000 x [15, 24] 6000000 x [3, 22] 5000000 x [5, 13]