Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:10:24 2012 Optimize a model with 3800 rows, 650 columns and 11950 nonzeros Presolve time: 0.05s Presolved: 3800 rows, 650 columns, 21268 nonzeros Variable types: 0 continuous, 650 integer (650 binary) Root relaxation: objective 2.000000e+00, 321 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 50 - 2.00000 - - 0s H 0 0 9.0000000 2.00000 77.8% - 0s 0 0 4.50000 0 105 9.00000 4.50000 50.0% - 0s H 0 0 8.0000000 4.50000 43.8% - 0s 0 0 7.00000 0 96 8.00000 7.00000 12.5% - 0s H 0 0 7.0000000 7.00000 0.0% - 0s Cutting planes: Clique: 30 Explored 0 nodes (3855 simplex iterations) in 0.66 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0%