Gurobi 5.0.1 (linux64) logging started Fri Jan 18 04:03:35 2013 Optimize a model with 4140 rows, 5020 columns and 18010 nonzeros Presolve removed 30 rows and 20 columns Presolve time: 0.20s Presolved: 4110 rows, 5000 columns, 13980 nonzeros Variable types: 3010 continuous, 1990 integer (1990 binary) Root relaxation: objective 2.387367e+04, 1597 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 23873.6700 0 1 - 23873.6700 - - 0s 0 0 23950.7184 0 2 - 23950.7184 - - 0s H 0 0 23950.729422 23950.7184 0.00% - 0s Cutting planes: Gomory: 1 Explored 0 nodes (1783 simplex iterations) in 0.38 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.395072942228e+04, best bound 2.395071839333e+04, gap 0.0000%