Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:34:24 2012

Optimize a model with 271 rows, 758 columns and 758 nonzeros
Model has 540 quadratic constraints
Presolve removed 0 rows and 16 columns
Presolve time: 3.15s
Presolved: 271 rows, 742 columns, 742 nonzeros
Variable types: 540 continuous, 202 integer (201 binary)

Root relaxation: objective 0.000000e+00, 83 iterations, 0.00 seconds

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

H    0     0                     133.0000000          -     -      -    3s
     0     0    0.00000    0   83  133.00000    0.00000   100%     -    3s
     0     0    0.00000    0    8  133.00000    0.00000   100%     -    3s
     0     0    0.00000    0    5  133.00000    0.00000   100%     -    3s
     0     2    0.00000    0    5  133.00000    0.00000   100%     -    3s
*   21    20              16      23.0000000    1.40074  93.9%  95.4    3s
*  401   160              20      22.0000000    8.99818  59.1%  32.8    3s
   606   202   11.07153   11  450   22.00000   11.07153  49.7%  33.6    5s
  2602   533   16.56061   29  463   22.00000   14.35512  34.7%  33.1   10s
  5117   756   20.40254   32  422   22.00000   16.82247  23.5%  30.4   15s
  7864   618   21.89482   36  368   22.00000   18.76522  14.7%  28.5   20s
* 8530   230              35      21.0000000   19.18966  8.62%  28.4   21s

Explored 8792 nodes (248921 simplex iterations) in 21.56 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.100000000000e+01, best bound 2.100000000000e+01, gap 0.0%