Gurobi 5.0.1 (linux64) logging started Fri Nov 16 04:24:35 2012

Optimize a model with 7242 rows, 2652 columns and 24174 nonzeros
Presolve time: 0.07s
Presolved: 7242 rows, 2652 columns, 24649 nonzeros
Variable types: 0 continuous, 2652 integer (2652 binary)
Found heuristic solution: objective 31.0000000

Root relaxation: objective 2.000000e+00, 4867 iterations, 0.56 seconds

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

     0     0    2.00000    0  102   31.00000    2.00000  93.5%     -    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
H    0     0                       4.0000000    2.00000  50.0%     -    2s
     0     0    2.00000    0  102    4.00000    2.00000  50.0%     -    4s
     0     0    2.00000    0  102    4.00000    2.00000  50.0%     -    6s
     0     0    2.00000    0  102    4.00000    2.00000  50.0%     -    8s
     0     0    2.00000    0  102    4.00000    2.00000  50.0%     -    9s
     0     2    2.00000    0  102    4.00000    2.00000  50.0%     -   14s
     1     3    3.00000    1  486    4.00000    2.00000  50.0% 16013   17s
     5     5    3.00000    2  330    4.00000    3.00000  25.0%  5160   20s
    56     6    3.00000    7  108    4.00000    3.00000  25.0%  1016   25s
   122     2     cutoff    5         4.00000    3.00000  25.0%   759   30s

Cutting planes:
  Clique: 86

Explored 145 nodes (135559 simplex iterations) in 31.41 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%