Gurobi 5.0.1 (linux64) logging started Fri Nov 16 03:16:38 2012 Optimize a model with 3319 rows, 1640 columns and 11398 nonzeros Presolve removed 762 rows and 2 columns Presolve time: 0.11s Presolved: 2597 rows, 1638 columns, 11070 nonzeros Variable types: 0 continuous, 1638 integer (1638 binary) Found heuristic solution: objective 40.0000000 Root relaxation: objective 3.000000e+00, 2389 iterations, 0.15 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 32 40.00000 3.00000 92.5% - 0s H 0 0 3.0000000 3.00000 0.0% - 0s Explored 0 nodes (9009 simplex iterations) in 0.75 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%