Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:12:42 2012

Optimize a model with 1 rows, 56 columns and 56 nonzeros
Model has 68 quadratic objective terms
Presolve removed 0 rows and 5 columns
Presolve time: 0.00s
Presolved: 69 rows, 119 columns, 255 nonzeros
Variable types: 0 continuous, 119 integer (118 binary)
Found heuristic solution: objective 20.0000000

Root relaxation: objective 0.000000e+00, 92 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   18   20.00000    0.00000   100%     -    0s
H    0     0                      17.0000000    0.00000   100%     -    0s
     0     0    0.00000    0   17   17.00000    0.00000   100%     -    0s
H    0     0                      15.0000000    0.00000   100%     -    0s
     0     0    0.00000    0   36   15.00000    0.00000   100%     -    0s
     0     0    0.00000    0   19   15.00000    0.00000   100%     -    0s
H    0     0                      12.0000000    0.00000   100%     -    0s
     0     2    0.00000    0   14   12.00000    0.00000   100%     -    0s
H  171    83                      10.0000000    0.00000   100%   5.8    0s
*  207    87              19       9.0000000    0.00000   100%   6.3    0s
H  217    74                       8.0000000    0.00000   100%   6.6    0s

Cutting planes:
  Cover: 130

Explored 351 nodes (5012 simplex iterations) in 0.08 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%