Gurobi 5.0.1 (linux64) logging started Fri Nov 16 02:05:41 2012 Optimize a model with 7253 rows, 992 columns and 22597 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.09s Presolved: 7251 rows, 990 columns, 25650 nonzeros Variable types: 0 continuous, 990 integer (990 binary) Found heuristic solution: objective 31.0000000 Root relaxation: objective 3.550802e+00, 8277 iterations, 0.55 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.55080 0 808 31.00000 3.55080 88.5% - 1s H 0 0 30.0000000 3.55080 88.2% - 1s 0 0 6.00000 0 120 30.00000 6.00000 80.0% - 2s H 0 0 22.0000000 6.00000 72.7% - 2s 0 0 6.28571 0 558 22.00000 6.28571 71.4% - 2s H 0 0 11.0000000 6.28571 42.9% - 2s 0 0 6.32727 0 612 11.00000 6.32727 42.5% - 2s H 0 0 10.0000000 6.32727 36.7% - 2s H 0 0 9.0000000 6.32727 29.7% - 2s 0 0 6.33333 0 161 9.00000 6.33333 29.6% - 2s 0 0 6.34951 0 609 9.00000 6.34951 29.4% - 3s 0 0 6.35208 0 623 9.00000 6.35208 29.4% - 3s 0 0 6.35208 0 462 9.00000 6.35208 29.4% - 4s 0 0 6.35208 0 523 9.00000 6.35208 29.4% - 5s 0 0 6.35208 0 523 9.00000 6.35208 29.4% - 5s 0 2 6.54545 0 520 9.00000 6.54545 27.3% - 7s H 27 22 8.0000000 7.00000 12.5% 201 8s * 35 2 33 7.0000000 7.00000 0.0% 165 8s Cutting planes: Gomory: 33 Clique: 19 Zero half: 6 Explored 36 nodes (32601 simplex iterations) in 8.23 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%