Gurobi 5.0.1 (linux64) logging started Sun Nov 18 08:22:31 2012

Optimize a model with 292 rows, 818 columns and 818 nonzeros
Model has 582 quadratic constraints
Presolve removed 0 rows and 15 columns
Presolve time: 3.39s
Presolved: 292 rows, 803 columns, 803 nonzeros
Variable types: 582 continuous, 221 integer (220 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                     148.0000000          -     -      -    3s
     0     0    0.00000    0  139  148.00000    0.00000   100%     -    3s
     0     0    0.06804    0  200  148.00000    0.06804   100%     -    3s
     0     2    0.07007    0  200  148.00000    0.07007   100%     -    3s
H   54    54                      62.0000000    2.31034  96.3%  25.7    3s
H   81    81                      30.0000000    2.31034  92.3%  23.5    3s
*  107   106              64      29.0000000    2.31034  92.0%  23.3    3s
*  122    97              74      28.0000000    2.31034  91.7%  22.3    3s
H  160    90                      24.0000000    2.32227  90.3%  23.7    3s
*  242   138              25      23.0000000    3.99409  82.6%  26.2    3s
*  515   195              12      22.0000000    7.44186  66.2%  30.5    4s
   641   239   20.08108   31  508   22.00000    8.83394  59.8%  40.0    5s
H  968   279                      20.0000000    8.83394  55.8%  47.7    6s
  2428   164   18.90123   38  408   20.00000   15.93023  20.3%  38.3   10s

Explored 2883 nodes (112797 simplex iterations) in 11.43 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%