Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:41:59 2012

Optimize a model with 1 rows, 174 columns and 174 nonzeros
Model has 170 quadratic objective terms
Presolve removed 0 rows and 30 columns
Presolve time: 0.00s
Presolved: 171 rows, 314 columns, 654 nonzeros
Variable types: 0 continuous, 314 integer (313 binary)
Found heuristic solution: objective 50.0000000

Root relaxation: objective 0.000000e+00, 205 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   42   50.00000    0.00000   100%     -    0s
H    0     0                      38.0000000    0.00000   100%     -    0s
     0     0    0.00000    0   40   38.00000    0.00000   100%     -    0s
H    0     0                      34.0000000    0.00000   100%     -    0s
     0     0    0.00000    0   86   34.00000    0.00000   100%     -    0s
     0     0    0.00000    0   27   34.00000    0.00000   100%     -    0s
H    0     0                      21.0000000    0.00000   100%     -    0s
H    0     0                      16.0000000    0.00000   100%     -    0s
     0     2    0.00000    0   25   16.00000    0.00000   100%     -    0s
H   54    48                      12.0000000    0.00000   100%   1.7    0s
H  351   201                      11.0000000    0.00000   100%   8.3    0s
*  576   281              12      10.0000000    0.38000  96.2%  12.2    0s
*  620   245              15       9.0000000    1.00000  88.9%  13.4    0s

Cutting planes:
  Cover: 331
  Zero half: 1

Explored 969 nodes (31577 simplex iterations) in 0.63 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 9.000000000000e+00, best bound 9.000000000000e+00, gap 0.0%