Gurobi 5.0.1 (linux64) logging started Sun Nov 18 07:43:07 2012

Optimize a model with 297 rows, 823 columns and 823 nonzeros
Model has 592 quadratic constraints
Presolve removed 0 rows and 22 columns
Presolve time: 3.50s
Presolved: 297 rows, 801 columns, 801 nonzeros
Variable types: 592 continuous, 209 integer (208 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                     146.0000000          -     -      -    3s
     0     0    0.00000    0  124  146.00000    0.00000   100%     -    3s
     0     0    0.00000    0  163  146.00000    0.00000   100%     -    3s
     0     0    0.00000    0  159  146.00000    0.00000   100%     -    3s
     0     2    0.00000    0  152  146.00000    0.00000   100%     -    3s
*   52    52              27      26.0000000    2.51920  90.3%  38.0    3s
*  487   210              18      24.0000000   10.54018  56.1%  33.5    4s
   603   232   17.50000    8  495   24.00000   11.69767  51.3%  33.2    5s
  1651   451   22.65031   35  432   24.00000   12.54412  47.7%  44.5   10s
  3381   836   21.04571   38  458   24.00000   16.39645  31.7%  38.0   15s
  5166   956     cutoff   51        24.00000   18.17073  24.3%  35.7   20s
* 5887   793              44      23.0000000   18.76190  18.4%  34.8   21s
  6987   252     cutoff   40        23.00000   21.06897  8.40%  34.9   25s

Explored 7252 nodes (250774 simplex iterations) in 25.44 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%