Gurobi 5.0.1 (linux64) logging started Sat Nov 17 20:09:06 2012

Optimize a model with 1 rows, 27 columns and 27 nonzeros
Model has 173 quadratic objective terms
Modified 27 Q diagonals
Presolve time: 0.01s
Presolved: 1 rows, 27 columns, 27 nonzeros
Presolved model has 200 quadratic objective terms
Variable types: 0 continuous, 27 integer (27 binary)
Found heuristic solution: objective 91.0000000

Root relaxation: objective 0.000000e+00, 29 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   27   91.00000    0.00000   100%     -    0s
H    0     0                      90.0000000    0.00000   100%     -    0s
H    0     0                      89.0000000    0.00000   100%     -    0s
H    0     0                      76.0000000    0.00000   100%     -    0s
H    0     0                      72.0000000    0.00000   100%     -    0s
     0     2    2.87730    0   27   72.00000    2.87730  96.0%     -    0s
H  161   134                      71.0000000   10.78965  84.8%   2.0    0s
H  225   183                      69.0000000   10.95347  84.1%   2.1    0s
H 1204   638                      68.0000000   21.42487  68.5%   2.0    0s
 94126 25904   55.95416   24   12   68.00000   52.08094  23.4%   2.0    5s
 192909 34516   65.70997   28    8   68.00000   56.20462  17.3%   2.0   10s
 289693 30939   62.51162   24   12   68.00000   58.87224  13.4%   2.0   15s
 390134 13621   66.48256   30    6   68.00000   62.58276  7.97%   2.0   20s

Explored 420026 nodes (849060 simplex iterations) in 21.63 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.800000000000e+01, best bound 6.800000000000e+01, gap 0.0%