Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:16:23 2013 Optimize a model with 583 rows, 28143 columns and 56233 nonzeros Presolve time: 0.04s Presolved: 583 rows, 28143 columns, 56233 nonzeros Variable types: 28090 continuous, 53 integer (53 binary) Root relaxation: objective 5.288808e+04, 920 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 52888.0776 0 8 - 52888.0776 - - 0s H 0 0 56601.000000 52888.0776 6.56% - 0s 0 0 53234.7511 0 7 56601.0000 53234.7511 5.95% - 0s 0 0 53277.1426 0 4 56601.0000 53277.1426 5.87% - 0s H 0 0 56432.442558 53277.1426 5.59% - 0s H 0 0 55501.000000 53277.1426 4.01% - 0s 0 0 53281.3012 0 4 55501.0000 53281.3012 4.00% - 0s H 0 0 54375.000000 53281.3012 2.01% - 0s 0 0 53282.9153 0 5 54375.0000 53282.9153 2.01% - 0s 0 0 53285.1336 0 3 54375.0000 53285.1336 2.00% - 0s 0 0 53285.1336 0 3 54375.0000 53285.1336 2.00% - 0s 0 0 53285.1336 0 3 54375.0000 53285.1336 2.00% - 0s 0 0 53285.5516 0 3 54375.0000 53285.5516 2.00% - 0s H 0 0 53334.000000 53285.5516 0.09% - 0s 0 0 53285.5516 0 6 53334.0000 53285.5516 0.09% - 0s 0 0 53285.5516 0 5 53334.0000 53285.5516 0.09% - 0s 0 0 53287.6036 0 3 53334.0000 53287.6036 0.09% - 0s 0 0 53289.1065 0 3 53334.0000 53289.1065 0.08% - 0s 0 0 53294.7572 0 4 53334.0000 53294.7572 0.07% - 0s 0 0 53295.7687 0 4 53334.0000 53295.7687 0.07% - 0s 0 0 53295.9152 0 3 53334.0000 53295.9152 0.07% - 0s 0 0 53295.9998 0 3 53334.0000 53295.9998 0.07% - 0s 0 0 53298.3583 0 2 53334.0000 53298.3583 0.07% - 0s 0 0 53298.8000 0 1 53334.0000 53298.8000 0.07% - 0s 0 2 53305.0000 0 1 53334.0000 53305.0000 0.05% - 0s Cutting planes: Implied bound: 35 Flow cover: 5 Explored 3 nodes (2246 simplex iterations) in 0.99 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.333400000000e+04, best bound 5.333400000000e+04, gap 0.0%