Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:40:41 2012

Optimize a model with 1 rows, 41 columns and 41 nonzeros
Model has 92 quadratic objective terms
Modified 41 Q diagonals
Presolve time: 0.01s
Presolved: 1 rows, 41 columns, 41 nonzeros
Presolved model has 133 quadratic objective terms
Variable types: 0 continuous, 41 integer (41 binary)
Found heuristic solution: objective 47.0000000

Root relaxation: objective 0.000000e+00, 43 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   41   47.00000    0.00000   100%     -    0s
H    0     0                      34.0000000    0.00000   100%     -    0s
H    0     0                      33.0000000    0.00000   100%     -    0s
H    0     0                      22.0000000    0.00000   100%     -    0s
     0     2    1.57276    0   41   22.00000    1.57276  92.9%     -    0s
H  141   109                      21.0000000    3.98449  81.0%   2.4    0s
H  405   298                      20.0000000    4.97731  75.1%   2.5    0s
H  617   390                      19.0000000    5.26328  72.3%   2.5    0s
H  632   381                      18.0000000    5.26328  70.8%   2.6    0s

Explored 11436 nodes (30404 simplex iterations) in 0.89 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.800000000000e+01, best bound 1.800000000000e+01, gap 0.0%