Gurobi 5.0.1 (linux64) logging started Fri Nov 16 02:06:59 2012 Optimize a model with 7253 rows, 992 columns and 22597 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.08s Presolved: 7282 rows, 990 columns, 26611 nonzeros Variable types: 0 continuous, 990 integer (990 binary) Found heuristic solution: objective 31.0000000 Root relaxation: objective 3.550802e+00, 7355 iterations, 0.49 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.55080 0 810 31.00000 3.55080 88.5% - 1s H 0 0 30.0000000 3.55080 88.2% - 1s 0 0 6.00000 0 113 30.00000 6.00000 80.0% - 2s H 0 0 25.0000000 6.00000 76.0% - 2s 0 0 6.28571 0 128 25.00000 6.28571 74.9% - 2s H 0 0 17.0000000 6.28571 63.0% - 2s H 0 0 9.0000000 6.28571 30.2% - 2s 0 0 6.29448 0 642 9.00000 6.29448 30.1% - 2s 0 0 6.34286 0 611 9.00000 6.34286 29.5% - 2s 0 0 6.34286 0 621 9.00000 6.34286 29.5% - 3s 0 0 6.34286 0 484 9.00000 6.34286 29.5% - 4s H 0 0 8.0000000 6.34286 20.7% - 4s 0 0 6.34286 0 491 8.00000 6.34286 20.7% - 5s 0 0 6.34286 0 491 8.00000 6.34286 20.7% - 5s 0 2 7.00000 0 491 8.00000 7.00000 12.5% - 6s * 29 1 26 7.0000000 7.00000 0.0% 149 7s Cutting planes: Gomory: 30 Clique: 9 Zero half: 6 Explored 30 nodes (31703 simplex iterations) in 7.38 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%