Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:54:04 2012

Optimize a model with 1 rows, 21 columns and 21 nonzeros
Model has 107 quadratic objective terms
Modified 21 Q diagonals
Presolve time: 0.01s
Presolved: 1 rows, 21 columns, 21 nonzeros
Presolved model has 128 quadratic objective terms
Variable types: 0 continuous, 21 integer (21 binary)
Found heuristic solution: objective 55.0000000

Root relaxation: objective 0.000000e+00, 23 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   21   55.00000    0.00000   100%     -    0s
H    0     0                      50.0000000    0.00000   100%     -    0s
H    0     0                      44.0000000    0.00000   100%     -    0s
     0     2    2.36635    0   21   44.00000    2.36635  94.6%     -    0s
H   40    29                      43.0000000    4.71840  89.0%   1.9    0s
H 1599   399                      42.0000000   23.35560  44.4%   2.1    0s

Explored 13043 nodes (26583 simplex iterations) in 0.66 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.200000000000e+01, best bound 4.200000000000e+01, gap 0.0%