Gurobi 5.0.1 (linux64) logging started Fri Nov 16 04:08:28 2012 Optimize a model with 5047 rows, 2450 columns and 17395 nonzeros Presolve removed 539 rows and 0 columns Presolve time: 0.11s Presolved: 4508 rows, 2450 columns, 16219 nonzeros Variable types: 0 continuous, 2450 integer (2450 binary) Found heuristic solution: objective 30.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: cutoff, 4563 iterations, 0.37 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 cutoff 0 3.00000 2.00000 33.3% - 0s Explored 0 nodes (4563 simplex iterations) in 0.49 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%