Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:21:37 2012 Optimize a model with 4725 rows, 756 columns and 14823 nonzeros Presolve time: 0.05s Presolved: 4725 rows, 756 columns, 22437 nonzeros Variable types: 0 continuous, 756 integer (756 binary) Found heuristic solution: objective 13.0000000 Root relaxation: objective 2.000000e+00, 416 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 54 13.00000 2.00000 84.6% - 0s H 0 0 11.0000000 2.00000 81.8% - 0s H 0 0 9.0000000 2.00000 77.8% - 0s 0 0 2.00000 0 54 9.00000 2.00000 77.8% - 0s H 0 0 8.0000000 2.00000 75.0% - 0s 0 0 2.00000 0 54 8.00000 2.00000 75.0% - 0s 0 0 2.00000 0 54 8.00000 2.00000 75.0% - 0s H 0 0 7.0000000 2.00000 71.4% - 0s 0 0 2.66667 0 113 7.00000 2.66667 61.9% - 1s 0 0 4.16379 0 101 7.00000 4.16379 40.5% - 1s 0 0 6.00000 0 122 7.00000 6.00000 14.3% - 1s 0 0 6.00000 0 158 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 60 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 18 7.00000 6.00000 14.3% - 3s 0 0 6.00000 0 14 7.00000 6.00000 14.3% - 3s 0 0 6.00000 0 36 7.00000 6.00000 14.3% - 3s 0 0 6.00000 0 54 7.00000 6.00000 14.3% - 4s 0 0 6.00000 0 46 7.00000 6.00000 14.3% - 4s 0 0 6.00000 0 18 7.00000 6.00000 14.3% - 5s 0 0 6.00000 0 35 7.00000 6.00000 14.3% - 5s 0 0 6.00000 0 44 7.00000 6.00000 14.3% - 5s 0 0 6.00000 0 44 7.00000 6.00000 14.3% - 5s 0 2 6.00000 0 44 7.00000 6.00000 14.3% - 6s 10 8 6.00000 1 39 7.00000 6.00000 14.3% 64.3 10s 26 17 6.00000 21 48 7.00000 6.00000 14.3% 1577 15s 72 8 6.00000 22 88 7.00000 6.00000 14.3% 777 20s 215 17 6.00000 25 20 7.00000 6.00000 14.3% 436 25s Cutting planes: Gomory: 2 Clique: 41 Zero half: 19 Explored 329 nodes (148474 simplex iterations) in 26.79 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%