Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:11:41 2012 Optimize a model with 1681 rows, 1722 columns and 6601 nonzeros Presolve removed 85 rows and 123 columns Presolve time: 0.03s Presolved: 1596 rows, 1599 columns, 6273 nonzeros Variable types: 0 continuous, 1599 integer (1599 binary) Found heuristic solution: objective 20.0000000 Root relaxation: objective 3.000000e+00, 1448 iterations, 0.02 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 (1834 simplex iterations) in 0.07 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%