Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:54:06 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 56.0000000

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   56.00000    0.00000   100%     -    0s
H    0     0                      54.0000000    0.00000   100%     -    0s
H    0     0                      52.0000000    0.00000   100%     -    0s
H    0     0                      46.0000000    0.00000   100%     -    0s
H    0     0                      45.0000000    0.00000   100%     -    0s
     0     2    2.87300    0   21   45.00000    2.87300  93.6%     -    0s
H   15    15                      44.0000000    5.70511  87.0%   1.9    0s
H  227   166                      42.0000000   11.02262  73.8%   2.0    0s
*  283   189              11      40.0000000   11.34664  71.6%   2.1    0s

Explored 11976 nodes (24144 simplex iterations) in 0.58 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.000000000000e+01, best bound 4.000000000000e+01, gap 0.0%