Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:21:56 2012 Optimize a model with 7800 rows, 4290 columns and 27430 nonzeros Presolve removed 520 rows and 0 columns Presolve time: 0.13s Presolved: 7280 rows, 4290 columns, 26130 nonzeros Variable types: 0 continuous, 4290 integer (4290 binary) Found heuristic solution: objective 37.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: cutoff, 6626 iterations, 0.52 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 (6626 simplex iterations) in 0.66 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%