Gurobi 5.0.1 (linux64) logging started Sun Nov 18 09:04:26 2012

Optimize a model with 285 rows, 808 columns and 808 nonzeros
Model has 568 quadratic constraints
Presolve removed 0 rows and 22 columns
Presolve time: 3.31s
Presolved: 285 rows, 786 columns, 786 nonzeros
Variable types: 568 continuous, 218 integer (217 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                     140.0000000          -     -      -    3s
     0     0    0.00000    0    2  140.00000    0.00000   100%     -    3s
     0     0    0.00000    0    3  140.00000    0.00000   100%     -    3s
     0     0    0.00000    0    3  140.00000    0.00000   100%     -    3s
     0     2    0.00000    0    3  140.00000    0.00000   100%     -    3s
H   45    45                      28.0000000    0.57576  97.9%  54.4    3s
*   55    53              42      26.0000000    0.57576  97.8%  47.0    3s
H  189   140                      25.0000000    0.68831  97.2%  27.8    3s
   606   390    4.38462   12  479   25.00000    4.38462  82.5%  30.9    5s
*  757   452              48      23.0000000    4.38462  80.9%  41.2    6s
*  759   421              49      22.0000000    4.38462  80.1%  41.2    6s
* 1253   423              46      21.0000000   11.00000  47.6%  40.8    7s
  2088   331   18.51899   34  394   21.00000   13.28571  36.7%  38.7   10s
* 2760   334              35      20.0000000   14.42515  27.9%  37.1   12s
  2999   308   16.94444   31  424   20.00000   15.01429  24.9%  37.6   15s

Explored 3813 nodes (140060 simplex iterations) in 18.40 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.000000000000e+01, best bound 2.000000000000e+01, gap 0.0%