Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:10:50 2012 Optimize a model with 3800 rows, 650 columns and 11950 nonzeros Presolve time: 0.05s Presolved: 3800 rows, 650 columns, 19355 nonzeros Variable types: 0 continuous, 650 integer (650 binary) Root relaxation: objective 2.000000e+00, 206 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 3.50000 0 110 8.00000 3.50000 56.2% - 0s 0 0 5.00000 0 130 8.00000 5.00000 37.5% - 0s 0 0 5.00000 0 211 8.00000 5.00000 37.5% - 0s 0 0 5.00000 0 120 8.00000 5.00000 37.5% - 1s H 0 0 7.0000000 5.00000 28.6% - 1s H 0 0 6.0000000 5.00000 16.7% - 1s 0 0 5.00000 0 97 6.00000 5.00000 16.7% - 2s 0 0 5.00000 0 83 6.00000 5.00000 16.7% - 3s 0 0 5.00000 0 62 6.00000 5.00000 16.7% - 4s 0 0 5.00000 0 79 6.00000 5.00000 16.7% - 4s 0 0 5.00000 0 97 6.00000 5.00000 16.7% - 5s 0 0 5.00000 0 76 6.00000 5.00000 16.7% - 6s 0 0 5.00000 0 77 6.00000 5.00000 16.7% - 7s 0 0 5.00000 0 79 6.00000 5.00000 16.7% - 8s 0 0 5.00000 0 79 6.00000 5.00000 16.7% - 8s 0 2 5.00000 0 79 6.00000 5.00000 16.7% - 9s 4 4 5.00000 1 104 6.00000 5.00000 16.7% 366 10s 10 8 5.00000 1 125 6.00000 5.00000 16.7% 146 15s Cutting planes: Gomory: 2 Clique: 2 Zero half: 28 Explored 17 nodes (85705 simplex iterations) in 17.47 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%