Gurobi 5.0.1 (linux64) logging started Mon Feb 4 17:56:31 2013 Optimize a model with 7806 rows, 1296 columns and 23976 nonzeros Presolve removed 1206 rows and 668 columns Presolve time: 0.05s Presolved: 6600 rows, 628 columns, 20294 nonzeros Variable types: 15 continuous, 613 integer (613 binary) Found heuristic solution: objective 29528.000000 Root relaxation: objective 2.412525e+04, 2087 iterations, 0.06 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 24125.2500 0 3 29528.0000 24125.2500 18.3% - 0s H 0 0 24128.000000 24125.2500 0.01% - 0s 0 0 24126.3333 0 7 24128.0000 24126.3333 0.01% - 0s Cutting planes: MIR: 3 Mod-K: 2 Explored 0 nodes (2125 simplex iterations) in 0.16 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.412800000000e+04, best bound 2.412700000000e+04, gap 0.0041%