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
H    0     0                      18.0000000    0.00000   100%     -    0s
     0     2    2.27685    0   12   18.00000    2.27685  87.4%     -    0s
*   17    14              10      16.0000000    2.79357  82.5%   2.2    0s
*  104    41               7      15.0000000    6.59204  56.1%   2.1    0s

Explored 343 nodes (747 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%