Gurobi 5.0.1 (linux64) logging started Fri Nov 16 18:57:30 2012 Optimize a model with 12348 rows, 16002 columns and 52542 nonzeros Presolve removed 276 rows and 3024 columns Presolve time: 0.24s Presolved: 12072 rows, 12978 columns, 48888 nonzeros Variable types: 0 continuous, 12978 integer (12978 binary) Found heuristic solution: objective 44.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: cutoff, 14555 iterations, 0.83 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% - 1s Explored 0 nodes (14555 simplex iterations) in 1.10 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%