Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:14:51 2012 Optimize a model with 4212 rows, 702 columns and 13234 nonzeros Presolve time: 0.05s Presolved: 4212 rows, 702 columns, 22561 nonzeros Variable types: 0 continuous, 702 integer (702 binary) Found heuristic solution: objective 9.0000000 Root relaxation: objective 2.000000e+00, 1393 iterations, 0.05 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 52 9.00000 2.00000 77.8% - 0s H 0 0 8.0000000 2.00000 75.0% - 0s 0 0 2.00000 0 52 8.00000 2.00000 75.0% - 0s 0 0 2.00000 0 52 8.00000 2.00000 75.0% - 0s H 0 0 7.0000000 2.00000 71.4% - 0s 0 0 3.00000 0 52 7.00000 3.00000 57.1% - 0s 0 0 5.50000 0 87 7.00000 5.50000 21.4% - 0s 0 0 6.00000 0 90 7.00000 6.00000 14.3% - 0s 0 0 6.00000 0 120 7.00000 6.00000 14.3% - 0s * 0 0 0 6.0000000 6.00000 0.0% - 0s Cutting planes: Clique: 117 Zero half: 9 Explored 0 nodes (5852 simplex iterations) in 0.98 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.000000000000e+00, best bound 6.000000000000e+00, gap 0.0%