Gurobi 5.0.1 (linux64) logging started Sat Nov 17 20:07:55 2012

Optimize a model with 1 rows, 27 columns and 27 nonzeros
Model has 174 quadratic objective terms
Modified 27 Q diagonals
Presolve time: 0.01s
Presolved: 1 rows, 27 columns, 27 nonzeros
Presolved model has 201 quadratic objective terms
Variable types: 0 continuous, 27 integer (27 binary)
Found heuristic solution: objective 86.0000000

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   86.00000    0.00000   100%     -    0s
H    0     0                      77.0000000    0.00000   100%     -    0s
H    0     0                      74.0000000    0.00000   100%     -    0s
H    0     0                      73.0000000    0.00000   100%     -    0s
     0     2    2.12624    0   27   73.00000    2.12624  97.1%     -    0s
*  504   397              13      72.0000000   12.06707  83.2%   2.0    0s
*  508   382              16      69.0000000   12.06707  82.5%   2.0    0s
H 6737  3076                      68.0000000   35.74503  47.4%   2.1    0s
 77697 21607   53.33426   22   14   68.00000   51.32897  24.5%   2.0    5s
 155992 28300   55.87684   25   11   68.00000   55.87684  17.8%   2.0   10s
 231255 24978   61.98989   25   11   68.00000   58.58687  13.8%   2.0   15s
 308131 10960   65.64801   27    9   68.00000   62.40004  8.24%   2.0   20s

Explored 331427 nodes (680132 simplex iterations) in 21.55 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%