Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:00:37 2013 Optimize a model with 264 rows, 486 columns and 34410 nonzeros Presolve removed 40 rows and 40 columns Presolve time: 0.26s Presolved: 224 rows, 446 columns, 31170 nonzeros Variable types: 0 continuous, 446 integer (446 binary) Found heuristic solution: objective 648.0000000 Found heuristic solution: objective 615.0000000 Root relaxation: objective 4.920000e+02, 55 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 492.0000000 492.00000 0.0% - 0s Explored 0 nodes (55 simplex iterations) in 0.27 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.920000000000e+02, best bound 4.920000000000e+02, gap 0.0%