Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:38:16 2012

Optimize a model with 1 rows, 27 columns and 27 nonzeros
Model has 41 quadratic objective terms
Presolve time: 0.00s
Presolved: 42 rows, 68 columns, 150 nonzeros
Variable types: 0 continuous, 68 integer (68 binary)
Found heuristic solution: objective 20.0000000

Root relaxation: objective 0.000000e+00, 57 iterations, 0.00 seconds

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

     0     0    0.00000    0   16   20.00000    0.00000   100%     -    0s
H    0     0                      16.0000000    0.00000   100%     -    0s
     0     0    0.00000    0   14   16.00000    0.00000   100%     -    0s
H    0     0                      13.0000000    0.00000   100%     -    0s
H    0     0                      12.0000000    0.00000   100%     -    0s
     0     0    0.00000    0   31   12.00000    0.00000   100%     -    0s
     0     0    0.00000    0   16   12.00000    0.00000   100%     -    0s
     0     2    0.00000    0   15   12.00000    0.00000   100%     -    0s
H   37    27                      10.0000000    0.00000   100%   2.6    0s
H  101    51                       9.0000000    1.00000  88.9%   5.7    0s
*  110    49              10       8.0000000    1.00000  87.5%   5.6    0s

Cutting planes:
  Cover: 78

Explored 195 nodes (1765 simplex iterations) in 0.03 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.000000000000e+00, best bound 8.000000000000e+00, gap 0.0%