Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:14:05 2012 Optimize a model with 4238 rows, 702 columns and 13312 nonzeros Presolve time: 0.05s Presolved: 4238 rows, 702 columns, 21952 nonzeros Variable types: 0 continuous, 702 integer (702 binary) Found heuristic solution: objective 12.0000000 Root relaxation: objective 2.000000e+00, 369 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 52 12.00000 2.00000 83.3% - 0s H 0 0 10.0000000 2.00000 80.0% - 0s H 0 0 7.0000000 2.00000 71.4% - 0s 0 0 2.00000 0 52 7.00000 2.00000 71.4% - 0s 0 0 2.00000 0 52 7.00000 2.00000 71.4% - 0s 0 0 6.00000 0 33 7.00000 6.00000 14.3% - 1s 0 0 6.00000 0 111 7.00000 6.00000 14.3% - 1s 0 0 6.00000 0 39 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 40 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 22 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 35 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 39 7.00000 6.00000 14.3% - 3s 0 0 6.00000 0 39 7.00000 6.00000 14.3% - 3s 0 0 6.00000 0 39 7.00000 6.00000 14.3% - 3s 0 2 6.00000 0 39 7.00000 6.00000 14.3% - 3s 6 6 6.00000 1 34 7.00000 6.00000 14.3% 90.3 5s 16 12 6.00000 1 80 7.00000 6.00000 14.3% 33.9 10s 49 16 6.00000 15 72 7.00000 6.00000 14.3% 1086 15s Cutting planes: Gomory: 5 Clique: 12 Zero half: 16 Explored 344 nodes (115116 simplex iterations) in 18.70 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%