Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:34:51 2012

Optimize a model with 167 rows, 409 columns and 409 nonzeros
Model has 332 quadratic constraints
Presolve removed 0 rows and 2 columns
Presolve time: 1.93s
Presolved: 167 rows, 407 columns, 407 nonzeros
Variable types: 332 continuous, 75 integer (74 binary)

Root relaxation: objective 0.000000e+00, 36 iterations, 0.00 seconds

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

H    0     0                      81.0000000          -     -      -    1s
     0     0    0.00000    0    8   81.00000    0.00000   100%     -    1s
     0     0    0.00000    0   10   81.00000    0.00000   100%     -    1s
     0     0    0.00000    0   69   81.00000    0.00000   100%     -    1s
     0     2    0.00000    0   68   81.00000    0.00000   100%     -    1s
H   47    47                      39.0000000    5.53846  85.8%  47.9    2s
H   93    78                      35.0000000    5.81081  83.4%  37.0    2s
*   94    76              23      34.0000000    5.81081  82.9%  36.9    2s
  1843   674   27.96774   37  230   34.00000   18.00000  47.1%  30.5    5s
  6946  2210   31.15000   38  226   34.00000   23.50000  30.9%  21.0   10s
* 9680  2533              48      33.0000000   24.73469  25.0%  19.6   12s
 11828  2580   28.20000   40  237   33.00000   25.81818  21.8%  19.0   15s
 12414  2573   29.48333   41  233   33.00000   26.00000  21.2%  18.9   20s
 16960  2226   31.00000   46  236   33.00000   27.81818  15.7%  18.1   25s
 22329   362   31.50909   45  225   33.00000   31.00000  6.06%  17.7   30s

Explored 22718 nodes (398692 simplex iterations) in 30.18 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.300000000000e+01, best bound 3.300000000000e+01, gap 0.0%