Gurobi 5.0.1 (linux64) logging started Fri Nov 16 04:23:21 2012

Optimize a model with 7446 rows, 2652 columns and 24786 nonzeros
Presolve time: 0.07s
Presolved: 7446 rows, 2652 columns, 25248 nonzeros
Variable types: 0 continuous, 2652 integer (2652 binary)
Found heuristic solution: objective 29.0000000

Root relaxation: objective 2.000000e+00, 5470 iterations, 0.81 seconds

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

     0     0    2.00000    0  102   29.00000    2.00000  93.1%     -    1s
H    0     0                       9.0000000    2.00000  77.8%     -    1s
H    0     0                       5.0000000    2.00000  60.0%     -    1s
     0     0    2.00000    0  102    5.00000    2.00000  60.0%     -    1s
     0     0    2.00000    0  102    5.00000    2.00000  60.0%     -    2s
     0     0    2.00000    0  102    5.00000    2.00000  60.0%     -    5s
H    0     0                       4.0000000    2.00000  50.0%     -    5s
     0     0    2.00000    0  102    4.00000    2.00000  50.0%     -    7s
     0     0    2.00000    0  102    4.00000    2.00000  50.0%     -    9s
     0     0    2.00000    0  102    4.00000    2.00000  50.0%     -   10s
     0     2    2.00000    0  102    4.00000    2.00000  50.0%     -   16s
     2     4    3.00000    1  399    4.00000    3.00000  25.0% 17141   23s
     9     3     cutoff    5         4.00000    3.00000  25.0%  4677   25s
    26     2     cutoff    4         4.00000    3.00000  25.0%  2590   30s

Cutting planes:
  Clique: 93

Explored 33 nodes (118524 simplex iterations) in 32.99 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%