Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:32:13 2013 Optimize a model with 792 rows, 51912 columns and 103752 nonzeros Presolve time: 0.08s Presolved: 792 rows, 51912 columns, 103752 nonzeros Variable types: 51840 continuous, 72 integer (72 binary) Root relaxation: objective 7.729841e+04, 1752 iterations, 0.06 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 77298.4144 0 9 - 77298.4144 - - 0s H 0 0 82901.000000 77298.4144 6.76% - 0s 0 0 77694.0781 0 8 82901.0000 77694.0781 6.28% - 0s H 0 0 82412.000000 77694.0781 5.72% - 0s H 0 0 78394.000000 77694.0781 0.89% - 0s 0 0 77836.6500 0 7 78394.0000 77836.6500 0.71% - 0s 0 0 77869.1188 0 5 78394.0000 77869.1188 0.67% - 0s 0 0 77875.3440 0 7 78394.0000 77875.3440 0.66% - 0s 0 0 77877.8635 0 5 78394.0000 77877.8635 0.66% - 0s 0 0 77877.8635 0 5 78394.0000 77877.8635 0.66% - 0s 0 0 77877.8635 0 5 78394.0000 77877.8635 0.66% - 0s 0 0 77878.4814 0 5 78394.0000 77878.4814 0.66% - 0s 0 0 77878.4814 0 9 78394.0000 77878.4814 0.66% - 1s 0 0 77878.4814 0 8 78394.0000 77878.4814 0.66% - 1s 0 0 77878.4814 0 6 78394.0000 77878.4814 0.66% - 1s 0 0 77878.4814 0 5 78394.0000 77878.4814 0.66% - 1s 0 0 77878.4814 0 7 78394.0000 77878.4814 0.66% - 1s 0 0 77878.4814 0 5 78394.0000 77878.4814 0.66% - 1s 0 0 77878.4814 0 5 78394.0000 77878.4814 0.66% - 1s 0 0 77878.4814 0 5 78394.0000 77878.4814 0.66% - 1s 0 0 77878.4814 0 5 78394.0000 77878.4814 0.66% - 1s 0 2 77878.4814 0 5 78394.0000 77878.4814 0.66% - 2s H 11 8 78308.000000 77886.2672 0.54% 26.3 2s * 20 11 17 78138.000000 77886.2672 0.32% 42.5 2s H 32 2 77923.000000 77907.1887 0.02% 38.7 2s Cutting planes: Implied bound: 85 Flow cover: 5 Explored 38 nodes (5429 simplex iterations) in 2.66 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.792300000000e+04, best bound 7.791775430964e+04, gap 0.0067%