Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:42:26 2012

Optimize a model with 1 rows, 43 columns and 43 nonzeros
Model has 97 quadratic objective terms
Modified 43 Q diagonals
Presolve time: 0.01s
Presolved: 1 rows, 43 columns, 43 nonzeros
Presolved model has 140 quadratic objective terms
Variable types: 0 continuous, 43 integer (43 binary)
Found heuristic solution: objective 52.0000000

Root relaxation: objective 0.000000e+00, 45 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   43   52.00000    0.00000   100%     -    0s
H    0     0                      44.0000000    0.00000   100%     -    0s
H    0     0                      39.0000000    0.00000   100%     -    0s
H    0     0                      28.0000000    0.00000   100%     -    0s
H    0     0                      27.0000000    0.00000   100%     -    0s
H    0     0                      23.0000000    0.00000   100%     -    0s
     0     2    1.93009    0   43   23.00000    1.93009  91.6%     -    0s
H  626   450                      21.0000000    5.56300  73.5%   2.4    0s
H  632   432                      20.0000000    5.56300  72.2%   2.5    0s

Explored 17059 nodes (43985 simplex iterations) in 1.29 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.000000000000e+01, best bound 2.000000000000e+01, gap 0.0%