Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:01:01 2013 Optimize a model with 538 rows, 3410 columns and 182341 nonzeros Presolve removed 20 rows and 33 columns Presolve time: 1.22s Presolved: 518 rows, 3377 columns, 180793 nonzeros Variable types: 0 continuous, 3377 integer (3377 binary) Found heuristic solution: objective 2109.0000000 Found heuristic solution: objective 1913.0000000 Root relaxation: objective 1.645000e+03, 630 iterations, 0.05 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 1645.0000000 1645.00000 0.0% - 1s Explored 0 nodes (630 simplex iterations) in 1.30 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.645000000000e+03, best bound 1.645000000000e+03, gap 0.0%