Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:20:56 2013 Optimize a model with 863 rows, 15231 columns and 579662 nonzeros Presolve removed 51 rows and 293 columns Presolve time: 2.55s Presolved: 812 rows, 14938 columns, 562766 nonzeros Variable types: 0 continuous, 14938 integer (14938 binary) Found heuristic solution: objective 8262.0000000 Root relaxation: objective 5.401000e+03, 3308 iterations, 0.83 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 5401.0000000 5401.00000 0.0% - 3s Explored 0 nodes (3308 simplex iterations) in 3.48 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.401000000000e+03, best bound 5.401000000000e+03, gap 0.0%