Gurobi 5.0.1 (linux64) logging started Sat Nov 17 21:23:37 2012

Optimize a model with 217 rows, 462 columns and 462 nonzeros
Model has 432 quadratic constraints
Presolve time: 2.50s
Presolved: 217 rows, 462 columns, 462 nonzeros
Variable types: 432 continuous, 30 integer (30 binary)

Root relaxation: objective 0.000000e+00, 15 iterations, 0.00 seconds

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

H    0     0                     125.0000000          -     -      -    2s
     0     0    0.00000    0   28  125.00000    0.00000   100%     -    2s
     0     0    0.50000    0   30  125.00000    0.50000   100%     -    2s
     0     0    0.50000    0   30  125.00000    0.50000   100%     -    2s
     0     2    0.50000    0   30  125.00000    0.50000   100%     -    2s
*   43    43              22      94.0000000   10.30769  89.0%  45.7    2s
*   44    42              23      93.0000000   10.30769  88.9%  44.9    2s
*  294   226              24      91.0000000   22.56805  75.2%  47.9    2s
*  344   236              21      88.0000000   24.48718  72.2%  45.5    3s
   668   375   31.99231   16  276   88.00000   31.99231  63.6%  56.9    5s
  4314  1896     cutoff   47        88.00000   46.35714  47.3%  32.9   10s
  8748  3620   74.94737   41  259   88.00000   54.46154  38.1%  27.9   15s
 13393  5068   75.73684   47  249   88.00000   59.00000  33.0%  25.7   20s
 18177  6298   77.10526   46  263   88.00000   61.80000  29.8%  24.5   25s
 23152  7380   79.55556   50  254   88.00000   64.00000  27.3%  23.6   30s
*25619  7535              58      86.0000000   65.00000  24.4%  23.3   32s
 26040  7578   76.50000   47  255   86.00000   65.20000  24.2%  23.3   35s
 28939  7902   81.05882   41  249   86.00000   66.47619  22.7%  23.2   40s
 33514  8196     cutoff   40        86.00000   68.15385  20.8%  23.0   45s
*35155  8087              48      85.0000000   68.76471  19.1%  23.0   46s
 38082  8029   79.64706   40  254   85.00000   69.87500  17.8%  22.9   50s
*40203  7693              52      84.0000000   70.60000  16.0%  22.9   52s
 42703  7431   77.89474   37  289   84.00000   71.58333  14.8%  22.9   55s
H42883  7011                      83.0000000   71.66667  13.7%  22.9   55s
 46757  6094     cutoff   43        83.00000   73.37500  11.6%  22.8   60s
 50340  4843   79.55556   41  267   83.00000   75.17647  9.43%  22.7   65s
 55256  2120   82.00000   43  226   83.00000   78.50000  5.42%  22.3   70s

Explored 57799 nodes (1256888 simplex iterations) in 72.50 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.300000000054e+01, best bound 8.300000000054e+01, gap 0.0%