Gurobi 5.0.1 (linux64) logging started Fri Nov 16 04:00:00 2012

Optimize a model with 6816 rows, 2352 columns and 22608 nonzeros
Presolve time: 0.07s
Presolved: 6816 rows, 2352 columns, 23231 nonzeros
Variable types: 0 continuous, 2352 integer (2352 binary)
Found heuristic solution: objective 27.0000000

Root relaxation: objective 2.000000e+00, 2586 iterations, 0.11 seconds

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

     0     0    2.00000    0   96   27.00000    2.00000  92.6%     -    0s
H    0     0                       8.0000000    2.00000  75.0%     -    0s
H    0     0                       5.0000000    2.00000  60.0%     -    0s
     0     0    2.00000    0   96    5.00000    2.00000  60.0%     -    1s
H    0     0                       4.0000000    2.00000  50.0%     -    1s
     0     0    2.00000    0   96    4.00000    2.00000  50.0%     -    2s
     0     0    2.00000    0   96    4.00000    2.00000  50.0%     -    4s
     0     0    2.00000    0   96    4.00000    2.00000  50.0%     -    6s
     0     0    2.00000    0   96    4.00000    2.00000  50.0%     -    7s
     0     0    2.00000    0   96    4.00000    2.00000  50.0%     -    9s
     0     2    2.00000    0   96    4.00000    2.00000  50.0%     -   13s
     1     3    3.00000    1  448    4.00000    2.00000  50.0% 13284   16s
    30     8    3.00000    3  132    4.00000    3.00000  25.0%  1030   20s
   100     2    3.00000    4  115    4.00000    3.00000  25.0%   691   25s

Cutting planes:
  Clique: 100

Explored 117 nodes (126887 simplex iterations) in 27.22 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%