Gurobi 5.0.1 (linux64) logging started Fri Nov 16 03:27:04 2012 Optimize a model with 3912 rows, 1892 columns and 13414 nonzeros Presolve removed 1078 rows and 45 columns Presolve time: 0.11s Presolved: 2834 rows, 1847 columns, 10702 nonzeros Variable types: 0 continuous, 1847 integer (1847 binary) Found heuristic solution: objective 43.0000000 Root relaxation: objective 3.000000e+00, 2535 iterations, 0.16 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% - 0s Explored 0 nodes (7390 simplex iterations) in 0.74 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%