Gurobi 5.0.1 (linux64) logging started Fri Nov 16 05:45:01 2012

Optimize a model with 8232 rows, 3192 columns and 27664 nonzeros
Presolve time: 0.07s
Presolved: 8232 rows, 3192 columns, 28081 nonzeros
Variable types: 0 continuous, 3192 integer (3192 binary)
Found heuristic solution: objective 37.0000000

Root relaxation: objective 2.000000e+00, 3204 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  112   37.00000    2.00000  94.6%     -    0s
H    0     0                       9.0000000    2.00000  77.8%     -    0s
H    0     0                       5.0000000    2.00000  60.0%     -    0s
     0     0    2.00000    0  112    5.00000    2.00000  60.0%     -    1s
     0     0    2.00000    0  112    5.00000    2.00000  60.0%     -    3s
H    0     0                       4.0000000    2.00000  50.0%     -    3s
     0     0    2.00000    0  112    4.00000    2.00000  50.0%     -    6s
     0     0    2.00000    0  112    4.00000    2.00000  50.0%     -    9s
     0     0    2.00000    0  112    4.00000    2.00000  50.0%     -   12s
     0     0    2.00000    0  112    4.00000    2.00000  50.0%     -   14s
     0     2    2.00000    0  112    4.00000    2.00000  50.0%     -   25s
     2     4    2.50000    1  421    4.00000    2.50000  37.5% 14686   31s
    25     5    3.00000    2  311    4.00000    2.66667  33.3%  1825   35s

Cutting planes:
  Clique: 74

Explored 42 nodes (108526 simplex iterations) in 36.83 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%