Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:23:00 2012 Optimize a model with 7589 rows, 4422 columns and 26860 nonzeros Presolve removed 662 rows and 2 columns Presolve time: 0.27s Presolved: 6927 rows, 4420 columns, 25000 nonzeros Variable types: 0 continuous, 4420 integer (4420 binary) Found heuristic solution: objective 66.0000000 Root relaxation: objective 3.000000e+00, 5214 iterations, 0.51 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 3.0000000 3.00000 0.0% - 1s Explored 0 nodes (13234 simplex iterations) in 1.53 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%