Gurobi 5.0.1 (linux64) logging started Fri Nov 16 21:12:50 2012 Optimize a model with 23264 rows, 27390 columns and 96358 nonzeros Presolve removed 29 rows and 4457 columns Presolve time: 0.52s Presolved: 23235 rows, 22933 columns, 91621 nonzeros Variable types: 0 continuous, 22933 integer (22933 binary) Found heuristic solution: objective 165.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 303 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 236 3.00000 2.00000 33.3% - 0s Explored 0 nodes (533 simplex iterations) in 0.65 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%