Build (method = -2) #dp: 7071 Step-3' Graph: 120 vertices and 1651 arcs (0.03s) Step-4' Graph: 85 vertices and 1581 arcs (0.03s) #V4/#V3 = 0.71 #A4/#A3 = 0.96 Ready! (0.03s) Optimize a model with 166 rows, 1582 columns and 4582 nonzeros Presolve removed 27 rows and 46 columns Presolve time: 0.02s Presolved: 139 rows, 1536 columns, 4465 nonzeros Variable types: 0 continuous, 1536 integer (0 binary) Found heuristic solution: objective 3.210000e+08 Found heuristic solution: objective 3.210000e+08 Optimize a model with 139 rows, 1536 columns and 4465 nonzeros Presolved: 139 rows, 1536 columns, 4465 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 3.004e+03 Factor NZ : 5.481e+03 Factor Ops : 2.892e+05 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 3.77841888e+08 -6.03094879e+10 8.37e+10 2.22e-16 1.46e+08 0s 1 3.82043789e+08 -3.14813604e+10 2.16e+10 2.85e-01 4.22e+07 0s 2 3.33572944e+08 -8.00749438e+09 4.65e+09 1.26e-02 9.06e+06 0s 3 3.21134130e+08 -2.93739730e+09 1.42e+08 6.22e-15 1.19e+06 0s 4 3.20406687e+08 -6.75598553e+08 3.21e+05 4.94e-15 3.19e+05 0s 5 2.66177506e+08 -6.85634883e+08 9.10e+04 7.11e-15 3.04e+05 0s 6 2.38584984e+08 -1.59645769e+07 2.51e+04 5.15e-15 8.14e+04 0s 7 2.24806874e+08 8.99796904e+07 1.42e+04 6.32e-15 4.31e+04 0s 8 2.08421839e+08 1.52967816e+08 3.77e+03 5.28e-15 1.77e+04 0s 9 2.05165528e+08 1.80035607e+08 2.53e+03 5.04e-15 8.03e+03 0s 10 2.00218431e+08 1.90668261e+08 1.30e+02 5.26e-15 3.05e+03 0s 11 1.99130798e+08 1.96721821e+08 1.96e+01 6.21e-15 7.70e+02 0s 12 1.98850099e+08 1.98096876e+08 8.53e+00 4.77e-15 2.41e+02 0s 13 1.98743391e+08 1.98447610e+08 4.92e+00 1.00e-07 9.46e+01 0s 14 1.98628882e+08 1.98599043e+08 2.57e-01 1.07e-07 9.54e+00 0s 15 1.98620007e+08 1.98619971e+08 4.87e-05 8.86e-09 1.15e-02 0s 16 1.98620000e+08 1.98620000e+08 2.24e-08 4.29e-11 1.15e-05 0s Barrier solved model in 16 iterations and 0.02 seconds Optimal objective 1.98620000e+08 Warning: Markowitz tolerance tightened to 0.5 Root relaxation: objective 1.986200e+08, 1474 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 1.986200e+08 1.9862e+08 0.0% - 0s Explored 0 nodes (1474 simplex iterations) in 0.08 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.986200000000e+08, best bound 1.986200000000e+08, gap 0.0% Preprocessing time: 0.04 seconds Gurobi run time: 0.08 seconds Total run time: 0.13 seconds Objective: 198620000 Solution: 3542500 x [31, 81] 2970000 x [5, 7, 81] 487500 x [6, 6, 81] 6000000 x [32, 80] 5000000 x [33, 79] 4000000 x [34, 78] 3147500 x [35, 77] 2542500 x [3, 13, 77] 970000 x [4, 12, 77] 1577500 x [7, 9, 77] 1762500 x [8, 8, 77] 6000000 x [36, 76] 2025000 x [6, 12, 75] 3482500 x [7, 11, 75] 2492500 x [8, 10, 75] 4492500 x [38, 74] 507500 x [5, 14, 74] 1000000 x [39, 73] 2400000 x [1, 19, 73] 3600000 x [4, 16, 73] 3000000 x [40, 72] 2885000 x [1, 20, 72] 1132500 x [5, 16, 72] 1982500 x [8, 13, 72] 7000000 x [41, 71] 6000000 x [42, 70] 3000000 x [43, 69] 4000000 x [44, 68] 2000000 x [12, 14, 67] 147500 x [46, 66] 2430000 x [4, 23, 66] 3422500 x [9, 18, 66] 3000000 x [47, 65] 2000000 x [48, 64] 4000000 x [49, 63] 1457500 x [3, 27, 63] 1542500 x [6, 24, 63] 6000000 x [50, 62] 1390000 x [5, 26, 62] 610000 x [12, 19, 62] 3000000 x [51, 61] 5000000 x [52, 60] 5000000 x [53, 59] 2000000 x [2, 32, 59] 2457500 x [6, 28, 59] 1542500 x [12, 22, 59] 3000000 x [54, 58] 3030000 x [55, 57] 970000 x [7, 29, 57] 5500000 x [56, 56] 2995000 x [16, 22, 55] 1975000 x [17, 21, 55] 517500 x [11, 28, 54] 2492500 x [14, 25, 54] 3000000 x [15, 24, 54] 1990000 x [19, 20, 54] 1000000 x [4, 36, 53] 2000000 x [2, 39, 52] 2975000 x [13, 29, 51] 1272500 x [16, 26, 51] 3050000 x [17, 25, 51] 577500 x [18, 24, 51] 125000 x [20, 22, 51] 5000000 x [2, 43, 48] 2715000 x [1, 45, 47] 500000 x [13, 33, 47] 785000 x [23, 23, 47] 2852500 x [12, 35, 46] 507500 x [10, 38, 45] 3337500 x [22, 26, 45] 1440000 x [24, 24, 45] 975000 x [17, 32, 44] 2025000 x [21, 28, 44] 1457500 x [25, 31, 37] 2542500 x [27, 29, 37] 2500000 x [30, 30, 33] 1512500 x [29, 32, 32]