Gurobi 5.0.1 (linux64) logging started Fri Nov 16 08:18:32 2012

Optimize a model with 11904 rows, 4160 columns and 39616 nonzeros
Presolve time: 0.10s
Presolved: 11904 rows, 4160 columns, 39850 nonzeros
Variable types: 0 continuous, 4160 integer (4160 binary)
Found heuristic solution: objective 36.0000000

Root relaxation: objective 2.000000e+00, 4056 iterations, 0.17 seconds

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

     0     0    2.00000    0  128   36.00000    2.00000  94.4%     -    1s
H    0     0                      13.0000000    2.00000  84.6%     -    1s
H    0     0                       5.0000000    2.00000  60.0%     -    1s
     0     0    2.00000    0  128    5.00000    2.00000  60.0%     -    2s
     0     0    2.00000    0  128    5.00000    2.00000  60.0%     -    6s
     0     0    2.00000    0  128    5.00000    2.00000  60.0%     -   12s
     0     0    2.00000    0  128    5.00000    2.00000  60.0%     -   18s
     0     0    2.00000    0  128    5.00000    2.00000  60.0%     -   23s
     0     0    2.00000    0  128    5.00000    2.00000  60.0%     -   28s
H    0     0                       4.0000000    2.00000  50.0%     -   41s
     0     2    2.00000    0  128    4.00000    2.00000  50.0%     -   52s
     1     3    2.50000    1  276    4.00000    2.00000  50.0% 25297   58s
     2     4    2.50000    1  432    4.00000    2.50000  37.5% 18048   62s
     5     7    2.66667    3  277    4.00000    2.50000  37.5%  9207   66s
    33    15    2.50000    2  125    4.00000    2.50000  37.5%  1905   70s
    92    24     cutoff    7         4.00000    2.66667  33.3%   983   75s
   201    11     cutoff    9         4.00000    3.00000  25.0%   617   80s

Cutting planes:
  Clique: 98

Explored 271 nodes (214234 simplex iterations) in 81.36 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%