Gurobi 5.0.1 (linux64) logging started Sun Nov 18 09:20:23 2012

Optimize a model with 310 rows, 859 columns and 859 nonzeros
Model has 618 quadratic constraints
Presolve removed 0 rows and 13 columns
Presolve time: 3.60s
Presolved: 310 rows, 846 columns, 846 nonzeros
Variable types: 618 continuous, 228 integer (227 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                     163.0000000          -     -      -    3s
     0     0    0.00000    0  176  163.00000    0.00000   100%     -    3s
     0     0    0.19123    0  203  163.00000    0.19123   100%     -    3s
     0     2    0.19585    0  203  163.00000    0.19585   100%     -    3s
H   53    53                      26.0000000    1.04762  96.0%  38.1    3s
*   54    54              28      25.0000000    1.04762  95.8%  45.4    3s
   601   315   23.51987   17  203   25.00000    8.71486  65.1%  38.7    8s
   729   371   23.16816   31  379   25.00000    8.71486  65.1%  51.5   10s
H  733   352                      24.0000000    8.71486  63.7%  51.6   10s
  2368   469   18.26675   27  490   24.00000   15.42775  35.7%  43.3   15s
  2913   509   18.61058   27  532   24.00000   16.10429  32.9%  42.3   20s
  3346   514     cutoff   32        24.00000   16.78537  30.1%  41.2   25s
  4400   458     cutoff   28        24.00000   18.14628  24.4%  40.0   30s
  5589   289   23.00000   33  502   24.00000   19.46077  18.9%  38.8   35s
  6133   138   22.70423   31  417   24.00000   20.34731  15.2%  39.0   40s

Explored 6445 nodes (251370 simplex iterations) in 41.87 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.400000000000e+01, best bound 2.400000000000e+01, gap 0.0%