Gurobi 5.0.1 (linux64) logging started Fri Nov 16 04:47:27 2012

Optimize a model with 8374 rows, 2862 columns and 27772 nonzeros
Presolve time: 0.07s
Presolved: 8374 rows, 2862 columns, 28173 nonzeros
Variable types: 0 continuous, 2862 integer (2862 binary)
Found heuristic solution: objective 33.0000000

Root relaxation: objective 2.000000e+00, 2902 iterations, 0.09 seconds

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

     0     0    2.00000    0  106   33.00000    2.00000  93.9%     -    0s
H    0     0                       9.0000000    2.00000  77.8%     -    0s
H    0     0                       5.0000000    2.00000  60.0%     -    0s
     0     0    2.00000    0  106    5.00000    2.00000  60.0%     -    1s
     0     0    2.00000    0  106    5.00000    2.00000  60.0%     -    3s
     0     0    2.00000    0  106    5.00000    2.00000  60.0%     -    6s
H    0     0                       4.0000000    2.00000  50.0%     -    6s
     0     0    2.00000    0  106    4.00000    2.00000  50.0%     -    8s
     0     0    2.00000    0  106    4.00000    2.00000  50.0%     -   11s
     0     0    2.00000    0  106    4.00000    2.00000  50.0%     -   13s
     0     2    2.00000    0  106    4.00000    2.00000  50.0%     -   24s
     1     3    3.00000    1  599    4.00000    2.00000  50.0% 13332   26s
    35     6    3.00000    2  209    4.00000    3.00000  25.0%   848   30s
    98     2     cutoff    8         4.00000    3.00000  25.0%   611   35s
   129     3     cutoff   10         4.00000    3.00000  25.0%   729   40s

Cutting planes:
  Clique: 191

Explored 139 nodes (153353 simplex iterations) in 41.47 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%