Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:26:18 2012 Optimize a model with 12699 rows, 6972 columns and 44737 nonzeros Presolve removed 1495 rows and 83 columns Presolve time: 0.25s Presolved: 11204 rows, 6889 columns, 41002 nonzeros Variable types: 0 continuous, 6889 integer (6889 binary) Found heuristic solution: objective 49.0000000 Root relaxation: objective 3.000000e+00, 10656 iterations, 1.51 seconds 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% - 3s Explored 0 nodes (23889 simplex iterations) in 3.89 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%