Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:44:47 2012

Optimize a model with 1641 rows, 82 columns and 3282 nonzeros
Presolve removed 1154 rows and 0 columns
Presolve time: 0.04s
Presolved: 487 rows, 82 columns, 3049 nonzeros
Variable types: 0 continuous, 82 integer (82 binary)
Found heuristic solution: objective 6.0000000

Root relaxation: objective 1.273549e+01, 278 iterations, 0.01 seconds

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0   12.73549    0   74    6.00000   12.73549   112%     -    0s
H    0     0                       9.0000000   12.73549  41.5%     -    0s
     0     0   12.27931    0   77    9.00000   12.27931  36.4%     -    0s
     0     0   12.18013    0   80    9.00000   12.18013  35.3%     -    0s
     0     0   12.16108    0   80    9.00000   12.16108  35.1%     -    0s
     0     0   12.15265    0   79    9.00000   12.15265  35.0%     -    0s
     0     0   12.14812    0   80    9.00000   12.14812  35.0%     -    0s
     0     0   12.14366    0   80    9.00000   12.14366  34.9%     -    0s
     0     0   12.13879    0   80    9.00000   12.13879  34.9%     -    0s
     0     0   12.13731    0   80    9.00000   12.13731  34.9%     -    0s
     0     0   12.13389    0   80    9.00000   12.13389  34.8%     -    0s
     0     0   12.13362    0   81    9.00000   12.13362  34.8%     -    0s
     0     2   12.13083    0   81    9.00000   12.13083  34.8%     -    0s

Cutting planes:
  Clique: 53
  Zero half: 4

Explored 44 nodes (3067 simplex iterations) in 0.63 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 9.000000000000e+00, best bound 9.000000000000e+00, gap 0.0%