Gurobi 5.0.1 (linux64) logging started Fri Nov 16 05:06:42 2012

Optimize a model with 7668 rows, 2970 columns and 25758 nonzeros
Presolve time: 0.07s
Presolved: 7668 rows, 2970 columns, 26060 nonzeros
Variable types: 0 continuous, 2970 integer (2970 binary)
Found heuristic solution: objective 29.0000000

Root relaxation: objective 2.000000e+00, 3510 iterations, 0.20 seconds

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

     0     0    2.00000    0  108   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  108    5.00000    2.00000  60.0%     -    1s
     0     0    2.00000    0  108    5.00000    2.00000  60.0%     -    3s
     0     0    2.00000    0  108    5.00000    2.00000  60.0%     -    6s
H    0     0                       4.0000000    2.00000  50.0%     -    6s
     0     0    2.00000    0  108    4.00000    2.00000  50.0%     -    8s
     0     0    2.00000    0  108    4.00000    2.00000  50.0%     -   10s
     0     0    2.00000    0  108    4.00000    2.00000  50.0%     -   11s
     0     2    2.00000    0  108    4.00000    2.00000  50.0%     -   18s
     1     3    2.50000    1  581    4.00000    2.00000  50.0% 21637   23s
     2     4    2.50000    1  579    4.00000    2.50000  37.5% 16630   27s
    58    10    2.50000    2  198    4.00000    2.50000  37.5%   872   30s
   116    12    3.00000    8   92    4.00000    3.00000  25.0%   657   35s

Cutting planes:
  Clique: 112
  Zero half: 14

Explored 216 nodes (134320 simplex iterations) in 36.96 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%