Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:46:21 2013 Optimize a model with 814 rows, 54834 columns and 109594 nonzeros Presolve time: 0.08s Presolved: 814 rows, 54834 columns, 109594 nonzeros Variable types: 54760 continuous, 74 integer (74 binary) Root relaxation: objective 8.385684e+04, 2267 iterations, 0.07 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 83856.8437 0 7 - 83856.8437 - - 0s H 0 0 88343.000000 83856.8437 5.08% - 0s H 0 0 84426.000000 83856.8437 0.67% - 0s 0 0 84070.3904 0 6 84426.0000 84070.3904 0.42% - 0s 0 0 84070.3904 0 7 84426.0000 84070.3904 0.42% - 0s 0 0 84070.3904 0 6 84426.0000 84070.3904 0.42% - 0s 0 0 84077.3733 0 5 84426.0000 84077.3733 0.41% - 0s 0 0 84078.5568 0 5 84426.0000 84078.5568 0.41% - 0s 0 0 84080.4723 0 4 84426.0000 84080.4723 0.41% - 0s 0 0 84081.7966 0 4 84426.0000 84081.7966 0.41% - 1s 0 0 84081.7966 0 4 84426.0000 84081.7966 0.41% - 1s 0 0 84081.7966 0 4 84426.0000 84081.7966 0.41% - 1s 0 0 84081.8969 0 3 84426.0000 84081.8969 0.41% - 1s 0 0 84081.8969 0 3 84426.0000 84081.8969 0.41% - 1s 0 0 84084.9547 0 2 84426.0000 84084.9547 0.40% - 1s 0 2 84087.0200 0 2 84426.0000 84087.0200 0.40% - 1s H 5 2 84334.000000 84149.2043 0.22% 104 1s H 6 2 84316.000000 84149.2043 0.20% 96.2 1s * 7 3 6 84212.000000 84149.2043 0.07% 85.7 1s Cutting planes: Implied bound: 105 Flow cover: 3 Explored 11 nodes (5054 simplex iterations) in 1.70 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.421200000000e+04, best bound 8.421200000000e+04, gap 0.0%