Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:45:07 2012

Optimize a model with 1755 rows, 85 columns and 3510 nonzeros
Presolve removed 1258 rows and 0 columns
Presolve time: 0.05s
Presolved: 497 rows, 85 columns, 3164 nonzeros
Variable types: 0 continuous, 85 integer (85 binary)
Found heuristic solution: objective 7.0000000

Root relaxation: objective 1.306943e+01, 296 iterations, 0.01 seconds

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

     0     0   13.06943    0   82    7.00000   13.06943  86.7%     -    0s
     0     0   12.79685    0   83    7.00000   12.79685  82.8%     -    0s
H    0     0                       8.0000000   12.79685  60.0%     -    0s
     0     0   12.74451    0   84    8.00000   12.74451  59.3%     -    0s
     0     0   12.70896    0   85    8.00000   12.70896  58.9%     -    0s
     0     0   12.69499    0   85    8.00000   12.69499  58.7%     -    0s
     0     0   12.68188    0   85    8.00000   12.68188  58.5%     -    0s
     0     0   12.67933    0   85    8.00000   12.67933  58.5%     -    0s
     0     0   12.67056    0   85    8.00000   12.67056  58.4%     -    0s
     0     0   12.65729    0   84    8.00000   12.65729  58.2%     -    0s
     0     0   12.65725    0   84    8.00000   12.65725  58.2%     -    0s
     0     0   12.65722    0   84    8.00000   12.65722  58.2%     -    0s
     0     2   12.65549    0   84    8.00000   12.65549  58.2%     -    0s
*   36    20               6       9.0000000   12.47572  38.6%  49.4    0s

Cutting planes:
  Clique: 39
  Zero half: 6

Explored 85 nodes (5179 simplex iterations) in 0.80 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%