Gurobi 5.0.1 (linux64) logging started Fri Nov 16 06:38:06 2012

Optimize a model with 10502 rows, 3540 columns and 34810 nonzeros
Presolve time: 0.09s
Presolved: 10502 rows, 3540 columns, 35148 nonzeros
Variable types: 0 continuous, 3540 integer (3540 binary)
Found heuristic solution: objective 37.0000000

Root relaxation: objective 2.000000e+00, 3270 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  118   37.00000    2.00000  94.6%     -    0s
H    0     0                      11.0000000    2.00000  81.8%     -    0s
H    0     0                       5.0000000    2.00000  60.0%     -    0s
     0     0    2.00000    0  118    5.00000    2.00000  60.0%     -    1s
     0     0    2.00000    0  118    5.00000    2.00000  60.0%     -    5s
     0     0    2.00000    0  118    5.00000    2.00000  60.0%     -    9s
H    0     0                       4.0000000    2.00000  50.0%     -   10s
     0     0    2.00000    0  118    4.00000    2.00000  50.0%     -   14s
     0     0    2.00000    0  118    4.00000    2.00000  50.0%     -   18s
     0     0    2.00000    0  118    4.00000    2.00000  50.0%     -   21s
     0     2    2.00000    0  118    4.00000    2.00000  50.0%     -   30s
     1     3    3.00000    1  417    4.00000    2.00000  50.0% 37672   40s
     2     4    3.00000    1  521    4.00000    3.00000  25.0% 25999   45s
    16     6    3.00000    4  159    4.00000    3.00000  25.0%  4708   50s
    33     5    3.00000    5  267    4.00000    3.00000  25.0%  2848   55s
    52     4     cutoff    7         4.00000    3.00000  25.0%  2310   60s

Cutting planes:
  Clique: 125

Explored 57 nodes (193727 simplex iterations) in 61.55 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%