Gurobi 5.0.1 (linux64) logging started Fri Nov 16 18:01:51 2012 Optimize a model with 8288 rows, 12656 columns and 37072 nonzeros Presolve removed 29 rows and 3248 columns Presolve time: 0.15s Presolved: 8259 rows, 9408 columns, 33824 nonzeros Variable types: 0 continuous, 9408 integer (9408 binary) Found heuristic solution: objective 32.0000000 Found heuristic solution: objective 2.0000000 Root relaxation: cutoff, 7311 iterations, 0.23 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 (7311 simplex iterations) in 0.40 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%