Gurobi 5.0.1 (linux64) logging started Fri Nov 16 22:37:46 2012 Optimize a model with 33791 rows, 37056 columns and 137470 nonzeros Presolve removed 41 rows and 7490 columns Presolve time: 0.82s Presolved: 33750 rows, 29566 columns, 129630 nonzeros Variable types: 0 continuous, 29566 integer (29566 binary) Found heuristic solution: objective 192.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 330 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 0 280 3.00000 2.00000 33.3% - 0s 0 0 infeasible 0 3.00000 2.00000 33.3% - 1s Explored 0 nodes (636 simplex iterations) in 1.00 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%