Gurobi 5.0.1 (linux64) logging started Fri Nov 16 18:34:38 2012 Optimize a model with 11224 rows, 15006 columns and 48190 nonzeros Presolve removed 279 rows and 4270 columns Presolve time: 0.21s Presolved: 10945 rows, 10736 columns, 43310 nonzeros Variable types: 0 continuous, 10736 integer (10736 binary) Found heuristic solution: objective 51.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: cutoff, 12115 iterations, 0.72 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% - 0s Explored 0 nodes (12115 simplex iterations) in 0.95 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%