Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:58:52 2012 Optimize a model with 6867 rows, 11990 columns and 32155 nonzeros Presolve removed 28 rows and 3052 columns Presolve time: 0.15s Presolved: 6839 rows, 8938 columns, 29103 nonzeros Variable types: 0 continuous, 8938 integer (8938 binary) Found heuristic solution: objective 30.0000000 Found heuristic solution: objective 2.0000000 Root relaxation: cutoff, 5277 iterations, 0.07 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 (5277 simplex iterations) in 0.23 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%