Gurobi 5.0.1 (linux64) logging started Sun Nov 18 10:07:09 2012

Optimize a model with 298 rows, 841 columns and 841 nonzeros
Model has 594 quadratic constraints
Presolve removed 0 rows and 27 columns
Presolve time: 3.47s
Presolved: 298 rows, 814 columns, 814 nonzeros
Variable types: 594 continuous, 220 integer (219 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  147  151.00000    0.00000   100%     -    3s
     0     0    0.00000    0  175  151.00000    0.00000   100%     -    3s
     0     0    0.00000    0  171  151.00000    0.00000   100%     -    3s
     0     2    0.00000    0  171  151.00000    0.00000   100%     -    3s
H   54    54                      32.0000000    2.69444  91.6%  35.0    3s
*   78    73              45      27.0000000    2.69444  90.0%  30.5    3s
*  217   144              25      25.0000000    5.52353  77.9%  31.0    3s
H  356   169                      24.0000000    7.63260  68.2%  31.7    4s
   619   258   14.21978   18  648   24.00000    9.95349  58.5%  38.9    5s
  2568   542   23.69663   36  444   24.00000   15.78511  34.2%  34.5   10s
  5029   741   20.06024   34  442   24.00000   18.16292  24.3%  30.1   15s
* 6113   571              41      23.0000000   18.96766  17.5%  29.0   17s

Explored 7272 nodes (214331 simplex iterations) in 19.36 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.300000000000e+01, best bound 2.300000000000e+01, gap 0.0%