Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:37:47 2012

Optimize a model with 1 rows, 20 columns and 20 nonzeros
Model has 29 quadratic objective terms
Presolve time: 0.00s
Presolved: 30 rows, 49 columns, 107 nonzeros
Variable types: 0 continuous, 49 integer (49 binary)
Found heuristic solution: objective 16.0000000
Found heuristic solution: objective 15.0000000

Root relaxation: objective 0.000000e+00, 34 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   11   15.00000    0.00000   100%     -    0s
H    0     0                       8.0000000    0.00000   100%     -    0s
H    0     0                       7.0000000    0.00000   100%     -    0s
     0     0    0.00000    0   12    7.00000    0.00000   100%     -    0s
     0     0    0.00000    0    8    7.00000    0.00000   100%     -    0s
     0     0    0.00000    0   12    7.00000    0.00000   100%     -    0s
     0     0    0.00000    0   10    7.00000    0.00000   100%     -    0s
     0     2    0.00000    0   10    7.00000    0.00000   100%     -    0s
*   87    24               4       6.0000000    1.00000  83.3%   5.0    0s

Cutting planes:
  Cover: 52

Explored 112 nodes (774 simplex iterations) in 0.02 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.000000000000e+00, best bound 6.000000000000e+00, gap 0.0%