Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:52:36 2013 Optimize a model with 275 rows, 6275 columns and 12525 nonzeros Presolve time: 0.01s Presolved: 275 rows, 6275 columns, 12525 nonzeros Variable types: 6250 continuous, 25 integer (25 binary) Root relaxation: objective 2.418355e+04, 280 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 24183.5477 0 5 - 24183.5477 - - 0s H 0 0 24620.000000 24183.5477 1.77% - 0s 0 0 24568.3813 0 3 24620.0000 24568.3813 0.21% - 0s 0 0 24569.1597 0 3 24620.0000 24569.1597 0.21% - 0s 0 0 24573.0750 0 3 24620.0000 24573.0750 0.19% - 0s 0 0 24574.4812 0 3 24620.0000 24574.4812 0.18% - 0s 0 0 24574.4812 0 3 24620.0000 24574.4812 0.18% - 0s 0 0 24578.1048 0 3 24620.0000 24578.1048 0.17% - 0s 0 0 24617.1154 0 1 24620.0000 24617.1154 0.01% - 0s Cutting planes: Implied bound: 44 Flow cover: 2 Explored 0 nodes (456 simplex iterations) in 0.09 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.462000000000e+04, best bound 2.462000000000e+04, gap 0.0%