Gurobi 5.0.1 (linux64) logging started Sun Nov 18 09:19:51 2012

Optimize a model with 285 rows, 809 columns and 809 nonzeros
Model has 568 quadratic constraints
Presolve removed 0 rows and 23 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                     151.0000000          -     -      -    3s
     0     0    0.00000    0   83  151.00000    0.00000   100%     -    3s
     0     0    0.00000    0  189  151.00000    0.00000   100%     -    3s
     0     0    0.00000    0  185  151.00000    0.00000   100%     -    3s
     0     2    0.00000    0  185  151.00000    0.00000   100%     -    3s
H   54    54                      31.0000000    2.14506  93.1%  41.8    3s
H   81    77                      30.0000000    2.14506  92.8%  33.8    3s
*  109    76              67      29.0000000    2.14506  92.6%  29.1    3s
H  125    42                      20.0000000    2.19968  89.0%  30.8    3s
*  200    53              12      19.0000000    3.87158  79.6%  27.4    3s
   630   170   18.13580   23  383   19.00000    9.92631  47.8%  36.6    5s
* 2737    58              32      18.0000000   15.80156  12.2%  29.7    9s

Explored 2803 nodes (85088 simplex iterations) in 9.79 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.800000000000e+01, best bound 1.800000000000e+01, gap 0.0%