Gurobi 5.0.1 (linux64) logging started Sun Nov 18 08:30:48 2012

Optimize a model with 274 rows, 783 columns and 783 nonzeros
Model has 546 quadratic constraints
Presolve removed 0 rows and 22 columns
Presolve time: 3.23s
Presolved: 274 rows, 761 columns, 761 nonzeros
Variable types: 546 continuous, 215 integer (214 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                     132.0000000          -     -      -    3s
     0     0    0.00000    0  166  132.00000    0.00000   100%     -    3s
     0     0    0.23118    0  205  132.00000    0.23118   100%     -    3s
     0     2    0.24595    0  205  132.00000    0.24595   100%     -    3s
H   52    50                      20.0000000    1.88889  90.6%  35.6    3s
*  205   102              16      18.0000000    5.77232  67.9%  35.9    3s
   601   183   13.22105    8  205   18.00000   10.00000  44.4%  29.7    5s
  1727   336   16.50000   39  437   18.00000   10.35669  42.5%  41.7   10s
  4199   507   16.49198   44  446   18.00000   13.76000  23.6%  34.9   15s
  7001    68   17.84483   40  432   18.00000   17.12500  4.86%  31.4   20s

Explored 7096 nodes (223605 simplex iterations) in 20.09 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%