Gurobi 5.0.1 (linux64) logging started Fri Nov 16 03:45:05 2012

Optimize a model with 6072 rows, 2162 columns and 20194 nonzeros
Presolve time: 0.07s
Presolved: 6072 rows, 2162 columns, 20922 nonzeros
Variable types: 0 continuous, 2162 integer (2162 binary)
Found heuristic solution: objective 28.0000000

Root relaxation: objective 2.000000e+00, 2180 iterations, 0.08 seconds

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

     0     0    2.00000    0   92   28.00000    2.00000  92.9%     -    0s
H    0     0                      10.0000000    2.00000  80.0%     -    0s
H    0     0                       4.0000000    2.00000  50.0%     -    0s
     0     0    2.00000    0   92    4.00000    2.00000  50.0%     -    0s
     0     0    2.00000    0   92    4.00000    2.00000  50.0%     -    2s
     0     0    2.00000    0   92    4.00000    2.00000  50.0%     -    3s
     0     0    2.00000    0   92    4.00000    2.00000  50.0%     -    5s
     0     0    2.00000    0   92    4.00000    2.00000  50.0%     -    6s
     0     2    2.00000    0   92    4.00000    2.00000  50.0%     -   12s
     5     7    2.60000    3  311    4.00000    2.50000  37.5%  4097   15s
    96     9    2.60000    4  126    4.00000    2.60000  35.0%   531   20s

Cutting planes:
  Clique: 78

Explored 134 nodes (93770 simplex iterations) in 21.55 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%