Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:11:55 2013 Optimize a model with 707 rows, 8583 columns and 368442 nonzeros Presolve removed 34 rows and 121 columns Presolve time: 1.53s Presolved: 673 rows, 8462 columns, 363513 nonzeros Variable types: 0 continuous, 8462 integer (8462 binary) Found heuristic solution: objective 5068.0000000 Found heuristic solution: objective 4700.0000000 Root relaxation: objective 3.223000e+03, 1911 iterations, 0.32 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 3223.0000000 3223.00000 0.0% - 1s Explored 0 nodes (1911 simplex iterations) in 1.91 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.223000000000e+03, best bound 3.223000000000e+03, gap 0.0%