Gurobi 5.0.1 (linux64) logging started Tue Dec 11 04:08:51 2012 Optimize a model with 11910 rows, 11880 columns and 45294 nonzeros Presolve removed 738 rows and 123 columns Presolve time: 0.08s Presolved: 11172 rows, 11757 columns, 43861 nonzeros Variable types: 11058 continuous, 699 integer (699 binary) Root relaxation: objective 2.469455e+05, 1127 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 246945.504 0 32 - 246945.504 - - 0s H 0 0 251378.00000 246945.504 1.76% - 0s H 0 0 248962.00000 246945.504 0.81% - 0s 0 0 247080.932 0 56 248962.000 247080.932 0.76% - 0s 0 0 247144.852 0 56 248962.000 247144.852 0.73% - 0s 0 0 247152.367 0 56 248962.000 247152.367 0.73% - 0s 0 0 247155.808 0 58 248962.000 247155.808 0.73% - 0s 0 0 247157.608 0 69 248962.000 247157.608 0.72% - 0s 0 0 247169.828 0 62 248962.000 247169.828 0.72% - 0s H 0 0 248333.00000 247169.828 0.47% - 0s 0 2 247176.907 0 62 248333.000 247176.907 0.47% - 0s H 83 82 248144.00000 247238.242 0.37% 7.7 1s H 141 100 247854.00000 247239.877 0.25% 7.4 1s H 304 191 247742.00000 247261.352 0.19% 7.0 2s H 331 214 247720.00000 247261.352 0.19% 7.1 2s 649 462 247422.275 30 32 247720.000 247280.452 0.18% 8.6 5s * 1161 600 59 247704.00000 247320.088 0.15% 8.3 6s H 1317 583 247690.00000 247325.878 0.15% 8.0 7s H 1782 459 247592.00000 247356.886 0.09% 7.5 8s 2628 906 247514.520 27 26 247592.000 247380.537 0.09% 7.0 10s H 3619 1151 247565.00000 247404.953 0.06% 6.7 12s 4970 1453 247451.811 29 36 247565.000 247433.806 0.05% 6.4 15s 7287 1804 247553.718 29 34 247565.000 247468.516 0.04% 6.1 20s * 7598 1698 50 247558.00000 247472.891 0.03% 6.0 20s 9646 1786 247530.180 41 20 247558.000 247495.458 0.03% 5.7 25s * 9846 1479 53 247548.00000 247497.803 0.02% 5.7 25s 11787 838 cutoff 33 247548.000 247523.120 0.01% 5.4 30s Cutting planes: Gomory: 5 Cover: 3 Implied bound: 1 Clique: 1 Flow cover: 17 Explored 11792 nodes (64924 simplex iterations) in 30.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.475480000000e+05, best bound 2.475232699558e+05, gap 0.0100%