Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:42:41 2012 Optimize a model with 4769 rows, 8190 columns and 22048 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.13s Presolved: 4857 rows, 8188 columns, 30042 nonzeros Variable types: 0 continuous, 8188 integer (8188 binary) Found heuristic solution: objective 90.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 141 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 58 3.00000 2.00000 33.3% - 0s Explored 0 nodes (230 simplex iterations) in 0.16 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%