Gurobi 5.0.1 (linux64) logging started Fri Nov 16 18:57:29 2012 Optimize a model with 8946 rows, 16002 columns and 42336 nonzeros Presolve removed 44 rows and 5544 columns Presolve time: 0.15s Presolved: 8902 rows, 10458 columns, 36792 nonzeros Variable types: 0 continuous, 10458 integer (10458 binary) Found heuristic solution: objective 34.0000000 Found heuristic solution: objective 2.0000000 Root relaxation: cutoff, 7301 iterations, 0.19 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 (7301 simplex iterations) in 0.36 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%