Gurobi 5.0.1 (linux64) logging started Sun Nov 18 09:37:24 2012

Optimize a model with 290 rows, 821 columns and 821 nonzeros
Model has 578 quadratic constraints
Presolve removed 0 rows and 24 columns
Presolve time: 3.37s
Presolved: 290 rows, 797 columns, 797 nonzeros
Variable types: 578 continuous, 219 integer (218 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                     152.0000000          -     -      -    3s
     0     0    0.00000    0  121  152.00000    0.00000   100%     -    3s
     0     0    0.00000    0  158  152.00000    0.00000   100%     -    3s
     0     0    0.00000    0  131  152.00000    0.00000   100%     -    3s
     0     2    0.00000    0  131  152.00000    0.00000   100%     -    3s
H   40    40                      29.0000000    3.28000  88.7%  41.2    3s
*   74    68              46      23.0000000    3.28000  85.7%  33.3    3s
   605   291   21.30769   13  487   23.00000   10.78378  53.1%  29.5    5s
* 1835   479              43      22.0000000   12.86429  41.5%  37.1    9s
  2114   530     cutoff   40        22.00000   13.69340  37.8%  36.7   10s
H 3286   526                      21.0000000   15.68493  25.3%  35.1   12s
  3882   396   17.80808   43  476   21.00000   17.19340  18.1%  35.2   15s
  4301   251   18.73980   37  483   21.00000   18.00000  14.3%  34.5   20s

Explored 4650 nodes (158825 simplex iterations) in 23.62 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.100000000000e+01, best bound 2.100000000000e+01, gap 0.0%