Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:41:22 2012

Optimize a model with 1 rows, 42 columns and 42 nonzeros
Model has 93 quadratic objective terms
Modified 42 Q diagonals
Presolve time: 0.01s
Presolved: 1 rows, 42 columns, 42 nonzeros
Presolved model has 135 quadratic objective terms
Variable types: 0 continuous, 42 integer (42 binary)
Found heuristic solution: objective 48.0000000

Root relaxation: objective 0.000000e+00, 44 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   42   48.00000    0.00000   100%     -    0s
H    0     0                      39.0000000    0.00000   100%     -    0s
H    0     0                      31.0000000    0.00000   100%     -    0s
H    0     0                      22.0000000    0.00000   100%     -    0s
H    0     0                      21.0000000    0.00000   100%     -    0s
     0     2    2.02242    0   42   21.00000    2.02242  90.4%     -    0s
H  628   421                      20.0000000    5.38725  73.1%   2.5    0s

Explored 64902 nodes (161133 simplex iterations) in 4.82 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%