Gurobi 5.0.1 (linux64) logging started Fri Nov 16 21:04:10 2012 Optimize a model with 20799 rows, 25760 columns and 87358 nonzeros Presolve removed 354 rows and 5122 columns Presolve time: 0.49s Presolved: 20445 rows, 20638 columns, 81182 nonzeros Variable types: 0 continuous, 20638 integer (20638 binary) Found heuristic solution: objective 160.0000000 Root relaxation: objective 3.000000e+00, 14724 iterations, 1.43 seconds Total elapsed time = 6.54s 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% - 7s Explored 0 nodes (39892 simplex iterations) in 7.74 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%