Gurobi 5.0.1 (linux64) logging started Fri Nov 16 18:48:59 2012 Optimize a model with 8625 rows, 15750 columns and 41125 nonzeros Presolve removed 43 rows and 5375 columns Presolve time: 0.15s Presolved: 8582 rows, 10375 columns, 35750 nonzeros Variable types: 0 continuous, 10375 integer (10375 binary) Found heuristic solution: objective 37.0000000 Found heuristic solution: objective 2.0000000 Root relaxation: cutoff, 6241 iterations, 0.12 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 (6241 simplex iterations) in 0.29 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%