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 3.960000e+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 4.28524424e+08 -6.42615293e+10 8.77e+10 2.22e-16 1.53e+08 0s 1 4.48712159e+08 -3.32225483e+10 1.87e+10 2.88e-01 3.85e+07 0s 2 4.06950437e+08 -8.01105726e+09 4.05e+09 1.61e-02 8.22e+06 0s 3 3.95992846e+08 -2.75989569e+09 1.65e+08 2.66e-15 1.18e+06 0s 4 3.88976448e+08 -1.54629607e+09 4.97e+06 1.55e-15 6.22e+05 0s 5 3.47202454e+08 -8.73071382e+08 2.55e+06 9.44e-16 3.92e+05 0s 6 2.77853214e+08 -4.18436444e+08 1.01e+06 6.38e-16 2.23e+05 0s 7 2.49887256e+08 -6.90911549e+07 5.47e+05 3.89e-16 1.02e+05 0s 8 2.18626044e+08 4.63269688e+07 1.56e+05 2.98e-16 5.51e+04 0s 9 2.05827528e+08 1.19898095e+08 6.65e+04 2.86e-16 2.75e+04 0s 10 2.01348719e+08 1.70552613e+08 3.10e+04 2.85e-16 9.85e+03 0s 11 1.97581642e+08 1.89096014e+08 2.64e+03 2.94e-16 2.71e+03 0s 12 1.96063390e+08 1.93526580e+08 3.04e+02 2.66e-16 8.11e+02 0s 13 1.95865398e+08 1.94984700e+08 1.54e+02 3.05e-16 2.82e+02 0s 14 1.95723453e+08 1.95441696e+08 2.86e+01 6.34e-08 9.01e+01 0s 15 1.95683118e+08 1.95672611e+08 2.79e-01 3.45e-08 3.36e+00 0s 16 1.95680003e+08 1.95679992e+08 1.49e-07 3.93e-09 3.36e-03 0s 17 1.95680000e+08 1.95680000e+08 2.38e-07 9.46e-14 1.24e-08 0s Barrier solved model in 17 iterations and 0.02 seconds Optimal objective 1.95680000e+08 Warning: Markowitz tolerance tightened to 0.5 Root relaxation: objective 1.956800e+08, 732 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 1.9568e+08 0 59 3.9600e+08 1.9568e+08 50.6% - 0s H 0 0 1.956800e+08 1.9568e+08 0.00% - 0s H 0 0 1.956800e+08 1.9568e+08 0.00% - 0s * 0 0 0 1.956800e+08 1.9568e+08 0.0% - 0s Cutting planes: Gomory: 1 Explored 0 nodes (923 simplex iterations) in 0.18 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.956800000000e+08, best bound 1.956800000000e+08, gap 0.0% Preprocessing time: 0.04 seconds Gurobi run time: 0.18 seconds Total run time: 0.22 seconds Objective: 195680000 Solution: 4650003 x [31, 81] 487141 x [3, 9, 81] 862856 x [6, 6, 81] 3000000 x [32, 80] 3000000 x [2, 12, 79] 1000000 x [7, 7, 79] 3000000 x [34, 78] 649999 x [2, 13, 78] 1000000 x [4, 11, 78] 2350001 x [6, 9, 78] 4000000 x [35, 77] 628576 x [2, 14, 77] 2371424 x [5, 11, 77] 5808568 x [36, 76] 1191432 x [1, 16, 76] 5000000 x [37, 75] 5000000 x [38, 74] 2000000 x [39, 73] 2000000 x [40, 72] 2000000 x [41, 71] 2000000 x [42, 70] 1924287 x [6, 17, 70] 2075713 x [11, 12, 70] 4000000 x [43, 69] 1000000 x [12, 12, 69] 2000000 x [10, 15, 68] 5000000 x [45, 67] 837142 x [1, 25, 67] 1000000 x [2, 24, 67] 2162858 x [8, 18, 67] 4000000 x [46, 66] 2000000 x [3, 24, 66] 1000000 x [47, 65] 2098574 x [5, 23, 65] 2174287 x [11, 17, 65] 727139 x [12, 16, 65] 8000000 x [48, 64] 7000000 x [49, 63] 2000000 x [4, 26, 63] 3000000 x [50, 62] 1971426 x [1, 30, 62] 1515715 x [2, 29, 62] 2512859 x [3, 28, 62] 1455711 x [2, 30, 61] 378575 x [11, 21, 61] 6165714 x [13, 19, 61] 1349997 x [52, 60] 4197148 x [12, 21, 60] 2452855 x [14, 19, 60] 1837142 x [53, 59] 2162858 x [9, 25, 59] 6812861 x [54, 58] 1187139 x [8, 27, 58] 3081429 x [55, 57] 918571 x [14, 22, 57] 3500000 x [56, 56] 4081429 x [16, 22, 55] 3837142 x [18, 20, 55] 1187139 x [2, 37, 54] 1562860 x [2, 38, 53] 2184287 x [13, 27, 53] 3901426 x [17, 23, 53] 514285 x [20, 20, 53] 1650003 x [8, 33, 52] 4000000 x [8, 34, 51] 5000000 x [21, 23, 49] 2000000 x [7, 38, 48] 2000000 x [10, 36, 47] 1381431 x [19, 30, 44] 2134288 x [20, 29, 44] 1424277 x [21, 28, 44] 2530002 x [5, 44, 44] 999998 x [14, 38, 41] 1 x [11, 41, 41] 3000000 x [24, 29, 40] 437142 x [27, 28, 38] 1812861 x [28, 28, 37] 1191432 x [27, 30, 36] 1349997 x [29, 31, 33] 2000000 x [30, 31, 32]