Gurobi 5.0.1 (linux64) logging started Sun Nov 18 07:24:10 2012

Optimize a model with 284 rows, 794 columns and 794 nonzeros
Model has 566 quadratic constraints
Presolve removed 0 rows and 14 columns
Presolve time: 3.30s
Presolved: 284 rows, 780 columns, 780 nonzeros
Variable types: 566 continuous, 214 integer (213 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  144  140.00000    0.00000   100%     -    3s
     0     0    0.14408    0  198  140.00000    0.14408   100%     -    3s
     0     2    0.15097    0  198  140.00000    0.15097   100%     -    3s
H   37    37                      22.0000000    1.80000  91.8%  37.2    3s
*   46    37              26      21.0000000    1.80000  91.4%  41.3    3s
   606   221   14.64474    7  487   21.00000   10.51515  49.9%  37.0    5s
  2197   383   20.92121   35  452   21.00000   15.00000  28.6%  37.9   10s
H 3556   159                      20.0000000   17.60164  12.0%  34.6   12s

Explored 3739 nodes (129761 simplex iterations) in 13.05 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%