Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:44:11 2012

Optimize a model with 1360 rows, 75 columns and 2720 nonzeros
Presolve removed 945 rows and 0 columns
Presolve time: 0.03s
Presolved: 415 rows, 75 columns, 2528 nonzeros
Variable types: 0 continuous, 75 integer (75 binary)
Found heuristic solution: objective 7.0000000

Root relaxation: objective 1.201848e+01, 239 iterations, 0.01 seconds

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

     0     0   12.01848    0   65    7.00000   12.01848  71.7%     -    0s
H    0     0                       8.0000000   12.01848  50.2%     -    0s
     0     0   11.74722    0   71    8.00000   11.74722  46.8%     -    0s
     0     0   11.72751    0   69    8.00000   11.72751  46.6%     -    0s
     0     0   11.70303    0   72    8.00000   11.70303  46.3%     -    0s
     0     0   11.67961    0   74    8.00000   11.67961  46.0%     -    0s
     0     0   11.66359    0   74    8.00000   11.66359  45.8%     -    0s
     0     0   11.66185    0   73    8.00000   11.66185  45.8%     -    0s
     0     0   11.66097    0   74    8.00000   11.66097  45.8%     -    0s
     0     0   11.66081    0   74    8.00000   11.66081  45.8%     -    0s
     0     2   11.65975    0   74    8.00000   11.65975  45.7%     -    0s
*   49     9               7       9.0000000   10.97437  21.9%  41.8    0s

Cutting planes:
  Clique: 42
  Zero half: 7

Explored 59 nodes (2727 simplex iterations) in 0.39 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%