Gurobi 5.0.1 (linux64) logging started Fri Nov 16 05:00:37 2012 Optimize a model with 7419 rows, 2862 columns and 24855 nonzeros Presolve removed 1698 rows and 2 columns Presolve time: 0.20s Presolved: 5774 rows, 2860 columns, 23473 nonzeros Variable types: 0 continuous, 2860 integer (2860 binary) Found heuristic solution: objective 53.0000000 Root relaxation: objective 4.000000e+00, 4183 iterations, 0.38 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 4.0000000 4.00000 0.0% - 1s Explored 0 nodes (9326 simplex iterations) in 1.08 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%