Build (method = -2) #dp: 3548 Step-3' Graph: 114 vertices and 359 arcs (0.01s) Step-4' Graph: 29 vertices and 189 arcs (0.01s) #V4/#V3 = 0.25 #A4/#A3 = 0.53 Ready! (0.01s) Optimize a model with 110 rows, 190 columns and 517 nonzeros Presolve removed 27 rows and 28 columns Presolve time: 0.00s Presolved: 83 rows, 162 columns, 436 nonzeros Variable types: 0 continuous, 162 integer (0 binary) Found heuristic solution: objective 2.750000e+08 Optimize a model with 83 rows, 162 columns and 436 nonzeros Presolved: 83 rows, 162 columns, 436 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 2.430e+02 Factor NZ : 1.138e+03 Factor Ops : 2.322e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 3.71593356e+08 -9.24133389e+09 8.91e+09 2.22e-16 1.43e+08 0s 1 3.17534669e+08 -2.54433706e+09 1.69e+09 6.66e-16 2.70e+07 0s 2 2.75934099e+08 -3.98806094e+08 3.92e+07 7.22e-16 2.13e+06 0s 3 2.74917956e+08 5.26928896e+07 1.52e+06 5.55e-16 5.90e+05 0s 4 2.69339872e+08 2.11325886e+08 4.92e+02 9.44e-16 1.53e+05 0s 5 2.51004220e+08 2.41711028e+08 1.42e+00 9.02e-16 2.45e+04 0s 6 2.50023208e+08 2.49989879e+08 1.79e-07 1.41e-07 8.79e+01 0s 7 2.50000000e+08 2.50000000e+08 1.19e-07 2.23e-10 6.72e-04 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, 160 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 (160 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: 8000000 x [20, 81] 2000000 x [16, 81] 9000000 x [19, 80] 2000000 x [10, 80] 5000000 x [30, 79] 6000000 x [34, 78] 7000000 x [11, 77] 5000000 x [29, 76] 3000000 x [33, 75] 7000000 x [35, 74] 2000000 x [7, 74] 3000000 x [16, 73] 1000000 x [33, 72] 7000000 x [26, 72] 8000000 x [9, 71] 2000000 x [6, 71] 6000000 x [15, 70] 6000000 x [13, 69] 4000000 x [43, 68] 5000000 x [17, 67] 4000000 x [46, 66] 10000000 x [3, 65] 2000000 x [2, 65] 5000000 x [47, 64] 6000000 x [49, 63] 1000000 x [46, 63] 8000000 x [50, 62] 3000000 x [51, 61] 1000000 x [2, 61] 2000000 x [52, 60] 3000000 x [53, 59] 7000000 x [52, 59] 5000000 x [54, 58] 9000000 x [55, 57] 3000000 x [54, 56] 1000000 x [53, 56] 1000000 x [53, 55] 1000000 x [47, 48] 7000000 x [42, 45] 2000000 x [6, 45] 7000000 x [5, 44] 6000000 x [14, 42] 5000000 x [40, 41] 5000000 x [21, 39] 3000000 x [18, 38] 6000000 x [32, 37] 7000000 x [8, 36] 5000000 x [24, 31] 7000000 x [25, 28] 6000000 x [4, 27] 1000000 x [10, 25] 6000000 x [1, 23] 7000000 x [12, 22]