Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:52:19 2012

Optimize a model with 1 rows, 12 columns and 12 nonzeros
Model has 36 quadratic objective terms
Modified 12 Q diagonals
Presolve time: 0.01s
Presolved: 1 rows, 12 columns, 12 nonzeros
Presolved model has 48 quadratic objective terms
Variable types: 0 continuous, 12 integer (12 binary)
Found heuristic solution: objective 19.0000000

Root relaxation: objective 0.000000e+00, 14 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   12   19.00000    0.00000   100%     -    0s
     0     2    2.59466    0   12   19.00000    2.59466  86.3%     -    0s
H    6     6                      16.0000000    3.86928  75.8%   1.7    0s
*  124    40               7      15.0000000    6.03657  59.8%   2.1    0s

Explored 359 nodes (779 simplex iterations) in 0.02 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.500000000000e+01, best bound 1.500000000000e+01, gap 0.0%