Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:40:08 2012 Optimize a model with 3280 rows, 6806 columns and 16318 nonzeros Presolve removed 28 rows and 2296 columns Presolve time: 0.10s Presolved: 3252 rows, 4510 columns, 14022 nonzeros Variable types: 0 continuous, 4510 integer (4510 binary) Found heuristic solution: objective 20.0000000 Found heuristic solution: objective 2.0000000 Root relaxation: cutoff, 2843 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 cutoff 0 2.00000 1.00000 50.0% - 0s Explored 0 nodes (2843 simplex iterations) in 0.14 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.000000000000e+00, best bound 2.000000000000e+00, gap 0.0%