Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:02:27 2013 Optimize a model with 737 rows, 44957 columns and 89847 nonzeros Presolve time: 0.06s Presolved: 737 rows, 44957 columns, 89847 nonzeros Variable types: 44890 continuous, 67 integer (67 binary) Root relaxation: objective 7.991028e+04, 1834 iterations, 0.05 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 79910.2801 0 8 - 79910.2801 - - 0s H 0 0 86045.000000 79910.2801 7.13% - 0s 0 0 80234.9089 0 6 86045.0000 80234.9089 6.75% - 0s H 0 0 85400.471295 80234.9089 6.05% - 0s H 0 0 84531.000000 80234.9089 5.08% - 0s 0 0 80295.3170 0 4 84531.0000 80295.3170 5.01% - 0s H 0 0 84207.798426 80295.3170 4.65% - 0s H 0 0 83388.000000 80295.3170 3.71% - 0s 0 0 80308.3666 0 5 83388.0000 80308.3666 3.69% - 0s 0 0 80309.6706 0 5 83388.0000 80309.6706 3.69% - 0s 0 0 80310.3634 0 6 83388.0000 80310.3634 3.69% - 0s H 0 0 83276.000000 80310.3634 3.56% - 0s 0 0 80310.6407 0 5 83276.0000 80310.6407 3.56% - 0s H 0 0 83250.000000 80310.6407 3.53% - 0s 0 0 80310.6407 0 5 83250.0000 80310.6407 3.53% - 0s 0 2 80322.2824 0 5 83250.0000 80322.2824 3.52% - 1s H 1 1 81152.417796 80322.2824 1.02% 0.0 1s H 3 3 80893.433962 80577.8000 0.39% 57.0 1s H 5 4 80761.000000 80584.5612 0.22% 42.0 1s * 7 4 6 80651.000000 80611.1321 0.05% 51.0 1s Cutting planes: Implied bound: 72 Flow cover: 7 Explored 11 nodes (2513 simplex iterations) in 1.38 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.065100000000e+04, best bound 8.065100000000e+04, gap 0.0%