Build (method = -2) #dp: 3466 Step-3' Graph: 114 vertices and 358 arcs (0.01s) Step-4' Graph: 28 vertices and 186 arcs (0.01s) #V4/#V3 = 0.25 #A4/#A3 = 0.52 Ready! (0.01s) Optimize a model with 108 rows, 187 columns and 510 nonzeros Presolve removed 26 rows and 27 columns Presolve time: 0.00s Presolved: 82 rows, 160 columns, 432 nonzeros Variable types: 0 continuous, 160 integer (0 binary) Found heuristic solution: objective 3.515000e+08 Optimize a model with 82 rows, 160 columns and 432 nonzeros Presolved: 82 rows, 160 columns, 432 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 2.400e+02 Factor NZ : 1.134e+03 Factor Ops : 2.320e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 4.07082354e+08 -9.31033832e+09 9.24e+09 2.22e-16 1.49e+08 0s 1 3.90412390e+08 -2.86576939e+09 1.53e+09 6.66e-16 2.65e+07 0s 2 3.51766913e+08 -4.63463405e+08 1.77e+07 1.44e-15 2.32e+06 0s 3 3.38561889e+08 -1.79141008e+08 3.00e+04 6.66e-16 1.38e+06 0s 4 2.80190987e+08 1.33206658e+08 1.50e+02 3.33e-16 3.91e+05 0s 5 2.51679815e+08 2.24081411e+08 1.72e+01 3.26e-16 7.34e+04 0s 6 2.50030038e+08 2.49852636e+08 2.17e-07 2.05e-16 4.72e+02 0s 7 2.50000000e+08 2.49999999e+08 8.94e-08 1.72e-10 1.65e-03 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: 5000000 x [12, 80] 5000000 x [5, 79] 8000000 x [11, 78] 1000000 x [8, 77] 3000000 x [21, 76] 2000000 x [20, 75] 8000000 x [33, 74] 1000000 x [8, 74] 2000000 x [20, 73] 7000000 x [7, 72] 6000000 x [30, 71] 1000000 x [8, 71] 11000000 x [37, 70] 1000000 x [6, 70] 12000000 x [23, 69] 1000000 x [6, 69] 9000000 x [44, 68] 2000000 x [44, 67] 9000000 x [46, 66] 2000000 x [41, 65] 6000000 x [18, 64] 6000000 x [14, 63] 5000000 x [1, 62] 5000000 x [45, 61] 1000000 x [4, 61] 5000000 x [17, 60] 1000000 x [3, 60] 6000000 x [48, 59] 1000000 x [3, 59] 7000000 x [49, 58] 1000000 x [3, 58] 4000000 x [40, 57] 1000000 x [3, 57] 9000000 x [50, 56] 9000000 x [52, 55] 4000000 x [28, 54] 4000000 x [35, 53] 5000000 x [34, 51] 1000000 x [4, 51] 1000000 x [46, 47] 6000000 x [25, 47] 4000000 x [39, 43] 7000000 x [38, 42] 1000000 x [6, 42] 10000000 x [13, 36] 8000000 x [29, 32] 1000000 x [8, 32] 8000000 x [15, 31] 7000000 x [26, 27] 6000000 x [10, 24] 1000000 x [15, 22] 5000000 x [9, 19] 8000000 x [2, 16]