Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:56:02 2012

Optimize a model with 1 rows, 23 columns and 23 nonzeros
Model has 134 quadratic objective terms
Modified 23 Q diagonals
Presolve time: 0.01s
Presolved: 1 rows, 23 columns, 23 nonzeros
Presolved model has 157 quadratic objective terms
Variable types: 0 continuous, 23 integer (23 binary)
Found heuristic solution: objective 68.0000000

Root relaxation: objective 0.000000e+00, 25 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   23   68.00000    0.00000   100%     -    0s
H    0     0                      66.0000000    0.00000   100%     -    0s
H    0     0                      65.0000000    0.00000   100%     -    0s
H    0     0                      63.0000000    0.00000   100%     -    0s
H    0     0                      61.0000000    0.00000   100%     -    0s
     0     2    3.61783    0   23   61.00000    3.61783  94.1%     -    0s
H    3     3                      58.0000000    5.76089  90.1%   1.3    0s
H  186   141                      56.0000000   12.13431  78.3%   2.0    0s
H  887   460                      55.0000000   19.74517  64.1%   2.1    0s
H 1617   536                      54.0000000   26.59576  50.7%   2.1    0s
H 1635   518                      53.0000000   26.72073  49.6%   2.1    0s

Explored 32781 nodes (68236 simplex iterations) in 1.95 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.300000000000e+01, best bound 5.300000000000e+01, gap 0.0%