Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:47:37 2013 Optimize a model with 2200 rows, 101700 columns and 207600 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 0.23s Presolved: 2100 rows, 101600 columns, 206500 nonzeros Variable types: 101200 continuous, 400 integer (400 binary) Root relaxation: objective 8.951303e+05, 6704 iterations, 0.43 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 895130.293 0 12 - 895130.293 - - 0s H 0 0 1022485.5503 895130.293 12.5% - 0s H 0 0 900789.75719 895130.293 0.63% - 1s 0 0 895191.950 0 12 900789.757 895191.950 0.62% - 1s 0 0 895214.857 0 12 900789.757 895214.857 0.62% - 1s 0 0 895239.584 0 12 900789.757 895239.584 0.62% - 1s 0 0 895245.770 0 12 900789.757 895245.770 0.62% - 2s 0 0 895246.417 0 12 900789.757 895246.417 0.62% - 2s 0 0 895249.630 0 12 900789.757 895249.630 0.62% - 2s 0 0 895253.815 0 12 900789.757 895253.815 0.61% - 2s 0 0 895254.401 0 12 900789.757 895254.401 0.61% - 3s 0 0 895258.373 0 12 900789.757 895258.373 0.61% - 3s 0 0 895258.641 0 12 900789.757 895258.641 0.61% - 3s 0 0 895258.940 0 12 900789.757 895258.940 0.61% - 4s 0 0 895259.062 0 12 900789.757 895259.062 0.61% - 4s 0 0 895259.062 0 12 900789.757 895259.062 0.61% - 6s 0 2 895263.323 0 12 900789.757 895263.323 0.61% - 7s 7 9 895680.405 7 3 900789.757 895526.232 0.58% 110 10s H 27 7 898252.98116 895526.232 0.30% 42.0 13s 30 9 896621.259 30 1 898252.981 895526.232 0.30% 40.0 15s 67 16 897623.214 7 3 898252.981 895699.017 0.28% 36.9 20s * 120 60 58 898218.24523 895699.017 0.28% 27.1 23s 136 64 896751.761 3 3 898218.245 895778.849 0.27% 31.8 25s 194 109 897424.045 27 3 898218.245 896559.236 0.18% 35.1 30s H 270 64 897234.64523 896575.825 0.07% 27.9 32s * 353 17 12 896949.94038 896582.089 0.04% 23.4 34s * 357 1 13 896634.43616 896634.324 0.00% 23.2 34s Cutting planes: Flow cover: 24 Explored 358 nodes (17285 simplex iterations) in 34.26 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.966344361626e+05, best bound 8.966343243635e+05, gap 0.0000%