Gurobi 5.0.1 (linux64) logging started Sat Nov 17 20:19:21 2012

Optimize a model with 1 rows, 28 columns and 28 nonzeros
Model has 187 quadratic objective terms
Modified 28 Q diagonals
Presolve time: 0.01s
Presolved: 1 rows, 28 columns, 28 nonzeros
Presolved model has 215 quadratic objective terms
Variable types: 0 continuous, 28 integer (28 binary)
Found heuristic solution: objective 99.0000000

Root relaxation: objective 0.000000e+00, 30 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   28   99.00000    0.00000   100%     -    0s
H    0     0                      85.0000000    0.00000   100%     -    0s
H    0     0                      81.0000000    0.00000   100%     -    0s
H    0     0                      78.0000000    0.00000   100%     -    0s
     0     2    4.40914    0   28   78.00000    4.40914  94.3%     -    0s
H  166   127                      76.0000000   11.93101  84.3%   2.0    0s
H  644   444                      75.0000000   17.81167  76.3%   2.1    0s
H  713   446                      74.0000000   17.81167  75.9%   2.1    0s
H  858   485                      72.0000000   18.11254  74.8%   2.1    0s
H  967   484                      69.0000000   21.11201  69.4%   2.1    0s
H18105  6560                      68.0000000   43.91448  35.4%   2.0    1s
 68068 15460   65.92190   33   10   68.00000   52.26157  23.1%   2.0    5s
 135897 16688   57.06640   28   15   68.00000   57.06640  16.1%   2.0   10s
 204670  7170   64.92943   31   12   68.00000   61.48054  9.59%   2.0   15s

Explored 222089 nodes (448250 simplex iterations) in 16.29 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%