Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:45:34 2012

Optimize a model with 1879 rows, 87 columns and 3758 nonzeros
Presolve removed 1313 rows and 0 columns
Presolve time: 0.05s
Presolved: 566 rows, 87 columns, 3740 nonzeros
Variable types: 0 continuous, 87 integer (87 binary)
Found heuristic solution: objective 7.0000000

Root relaxation: objective 1.303246e+01, 327 iterations, 0.01 seconds

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

     0     0   13.03246    0   81    7.00000   13.03246  86.2%     -    0s
H    0     0                       8.0000000   13.03246  62.9%     -    0s
     0     0   12.73204    0   84    8.00000   12.73204  59.2%     -    0s
     0     0   12.67325    0   84    8.00000   12.67325  58.4%     -    0s
     0     0   12.63073    0   84    8.00000   12.63073  57.9%     -    0s
     0     0   12.62135    0   84    8.00000   12.62135  57.8%     -    0s
     0     0   12.62113    0   84    8.00000   12.62113  57.8%     -    0s
     0     2   12.62079    0   84    8.00000   12.62079  57.8%     -    0s
*   37    23               7       9.0000000   12.32592  37.0%  62.4    0s

Cutting planes:
  Clique: 39
  Zero half: 4

Explored 80 nodes (4854 simplex iterations) in 0.65 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%