Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:11:07 2012 Optimize a model with 3875 rows, 650 columns and 12175 nonzeros Presolve time: 0.05s Presolved: 3875 rows, 650 columns, 21379 nonzeros Variable types: 0 continuous, 650 integer (650 binary) Root relaxation: objective 2.000000e+00, 38 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 H 0 0 8.0000000 2.00000 75.0% - 0s 0 0 3.00000 0 48 8.00000 3.00000 62.5% - 0s 0 0 5.50000 0 123 8.00000 5.50000 31.3% - 0s H 0 0 7.0000000 5.50000 21.4% - 0s 0 0 6.00000 0 128 7.00000 6.00000 14.3% - 0s 0 0 6.00000 0 118 7.00000 6.00000 14.3% - 0s 0 0 6.00000 0 108 7.00000 6.00000 14.3% - 0s 0 0 6.00000 0 115 7.00000 6.00000 14.3% - 0s 0 0 6.00000 0 17 7.00000 6.00000 14.3% - 1s 0 0 6.00000 0 20 7.00000 6.00000 14.3% - 1s 0 0 6.00000 0 14 7.00000 6.00000 14.3% - 1s 0 0 6.00000 0 25 7.00000 6.00000 14.3% - 1s 0 0 6.00000 0 29 7.00000 6.00000 14.3% - 1s 0 0 6.00000 0 23 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 46 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 46 7.00000 6.00000 14.3% - 2s 0 2 6.00000 0 46 7.00000 6.00000 14.3% - 3s 9 8 6.00000 1 14 7.00000 6.00000 14.3% 75.1 5s 177 11 infeasible 20 7.00000 6.00000 14.3% 250 10s Cutting planes: Gomory: 10 Clique: 9 Zero half: 9 Explored 254 nodes (68376 simplex iterations) in 10.67 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%