Gurobi 5.0.1 (linux64) logging started Sat Nov 17 20:19:38 2012

Optimize a model with 1 rows, 28 columns and 28 nonzeros
Model has 188 quadratic objective terms
Modified 28 Q diagonals
Presolve time: 0.01s
Presolved: 1 rows, 28 columns, 28 nonzeros
Presolved model has 216 quadratic objective terms
Variable types: 0 continuous, 28 integer (28 binary)
Found heuristic solution: objective 97.0000000

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   97.00000    0.00000   100%     -    0s
H    0     0                      88.0000000    0.00000   100%     -    0s
H    0     0                      83.0000000    0.00000   100%     -    0s
     0     2    2.82850    0   28   83.00000    2.82850  96.6%     -    0s
H   15    15                      82.0000000    7.25560  91.2%   1.9    0s
H  145   119                      81.0000000   12.03148  85.1%   2.0    0s
H  261   204                      74.0000000   14.02901  81.0%   2.0    0s
H 1559   599                      73.0000000   26.95414  63.1%   2.0    0s
H29912 11275                      72.0000000   49.34614  31.5%   2.0    1s
 82000 22336   55.79786   28   15   72.00000   55.79786  22.5%   2.0    5s
 160976 29432   64.12346   30   13   72.00000   59.97820  16.7%   2.0   10s
 239279 26464   67.71524   33   10   72.00000   62.84546  12.7%   2.0   15s
 316568 13626   65.81870   31   12   72.00000   65.81870  8.59%   2.0   20s

Explored 349090 nodes (702346 simplex iterations) in 22.30 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.200000000000e+01, best bound 7.200000000000e+01, gap 0.0%