Gurobi 5.0.1 (linux64) logging started Fri Nov 16 05:30:32 2012

Optimize a model with 9790 rows, 3080 columns and 32230 nonzeros
Presolve time: 0.08s
Presolved: 9790 rows, 3080 columns, 32578 nonzeros
Variable types: 0 continuous, 3080 integer (3080 binary)
Found heuristic solution: objective 34.0000000

Root relaxation: objective 2.000000e+00, 3184 iterations, 0.12 seconds

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

     0     0    2.00000    0  110   34.00000    2.00000  94.1%     -    0s
H    0     0                      13.0000000    2.00000  84.6%     -    0s
H    0     0                       5.0000000    2.00000  60.0%     -    0s
     0     0    2.00000    0  110    5.00000    2.00000  60.0%     -    1s
     0     0    2.00000    0  110    5.00000    2.00000  60.0%     -    4s
     0     0    2.00000    0  110    5.00000    2.00000  60.0%     -    7s
     0     0    2.00000    0  110    5.00000    2.00000  60.0%     -   11s
     0     0    2.00000    0  110    5.00000    2.00000  60.0%     -   16s
     0     0    2.00000    0  110    5.00000    2.00000  60.0%     -   19s
     0     2    2.00000    0  110    5.00000    2.00000  60.0%     -   26s
     1     3    3.00000    1  478    5.00000    2.00000  60.0% 22784   31s
     2     4    3.00000    1  415    5.00000    3.00000  40.0% 23412   38s
*   24     6              19       4.0000000    3.00000  25.0%  2125   39s
    30     6    3.00000    4  104    4.00000    3.00000  25.0%  1805   40s
    43     5    3.00000    4  235    4.00000    3.00000  25.0%  1805   45s
    52     2     cutoff    6         4.00000    3.00000  25.0%  1905   50s

Cutting planes:
  Clique: 127

Explored 61 nodes (163157 simplex iterations) in 52.29 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%