Gurobi 5.0.1 (linux64) logging started Fri Nov 16 03:19:14 2012 Optimize a model with 3443 rows, 1722 columns and 11847 nonzeros Presolve removed 535 rows and 2 columns Presolve time: 0.12s Presolved: 2949 rows, 1720 columns, 12074 nonzeros Variable types: 0 continuous, 1720 integer (1720 binary) Found heuristic solution: objective 40.0000000 Root relaxation: objective 3.000000e+00, 2234 iterations, 0.14 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 582 40.00000 3.00000 92.5% - 0s H 0 0 5.0000000 3.00000 40.0% - 0s H 0 0 3.0000000 3.00000 0.0% - 0s Explored 0 nodes (8449 simplex iterations) in 0.91 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%