Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:45:01 2012

Optimize a model with 280 rows, 779 columns and 779 nonzeros
Model has 558 quadratic constraints
Presolve removed 0 rows and 19 columns
Presolve time: 3.25s
Presolved: 280 rows, 760 columns, 760 nonzeros
Variable types: 558 continuous, 202 integer (201 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                     145.0000000          -     -      -    3s
     0     0    0.00000    0    3  145.00000    0.00000   100%     -    3s
     0     0    0.00000    0    2  145.00000    0.00000   100%     -    3s
     0     0    0.00000    0  112  145.00000    0.00000   100%     -    3s
     0     2    0.00000    0  112  145.00000    0.00000   100%     -    3s
H   54    54                      37.0000000    2.13333  94.2%  37.5    3s
*   59    59              47      32.0000000    2.13333  93.3%  37.0    3s
H  428   318                      31.0000000    4.57143  85.3%  20.8    3s
   601   448   29.15385   26  112   31.00000    6.00000  80.6%  19.6    5s
*  679   471              48      28.0000000    6.00000  78.6%  31.5    6s
* 1216   619              44      27.0000000    7.83158  71.0%  43.1    8s
  1645   728   20.48315   40  447   27.00000    8.74000  67.6%  40.6   10s
H 2261   744                      25.0000000   11.10000  55.6%  38.3   11s
H 2318   679                      24.0000000   11.25424  53.1%  38.0   11s
  2893   879   20.74143   38  454   24.00000   12.37267  48.4%  38.3   15s
  3517  1047   18.61538   40  455   24.00000   13.40619  44.1%  38.1   20s
  4883  1365   19.20779   36  457   24.00000   14.71287  38.7%  36.6   25s
  6543  1626   20.25153   34  444   24.00000   15.89535  33.8%  34.7   30s
  7837  1765     cutoff   40        24.00000   16.53668  31.1%  34.4   35s
  9007  1824   21.36567   40  349   24.00000   17.04966  29.0%  34.7   40s
 10354  1838   21.80000   38  424   24.00000   17.68293  26.3%  33.9   45s
 12518  1739     cutoff   41        24.00000   18.45217  23.1%  33.0   50s
 14693  1547   22.78102   38  447   24.00000   19.14088  20.2%  33.1   55s
 15680  1392   21.44516   37  442   24.00000   19.50000  18.8%  32.5   60s
 17945   829   21.64336   39  411   24.00000   20.34356  15.2%  32.5   65s
 19276   328   22.85288   37  425   24.00000   21.28205  11.3%  32.4   70s

Explored 19749 nodes (637515 simplex iterations) in 70.75 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%