Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:10:25 2012

Optimize a model with 1 rows, 43 columns and 43 nonzeros
Model has 52 quadratic objective terms
Presolve removed 0 rows and 2 columns
Presolve time: 0.00s
Presolved: 53 rows, 93 columns, 197 nonzeros
Variable types: 0 continuous, 93 integer (92 binary)
Found heuristic solution: objective 18.0000000

Root relaxation: objective 0.000000e+00, 62 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   18.00000    0.00000   100%     -    0s
H    0     0                      11.0000000    0.00000   100%     -    0s
     0     0    0.00000    0   11   11.00000    0.00000   100%     -    0s
     0     0    0.00000    0   10   11.00000    0.00000   100%     -    0s
H    0     0                       9.0000000    0.00000   100%     -    0s
H    0     0                       8.0000000    0.00000   100%     -    0s
     0     0    0.00000    0   20    8.00000    0.00000   100%     -    0s
     0     0    0.00000    0   20    8.00000    0.00000   100%     -    0s
     0     2    0.00000    0   15    8.00000    0.00000   100%     -    0s
*  150    75              13       7.0000000    0.00000   100%   6.2    0s
*  180    45              11       6.0000000    0.81818  86.4%   6.0    0s

Cutting planes:
  Cover: 97

Explored 237 nodes (2557 simplex iterations) in 0.04 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%