Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:20:29 2012

Optimize a model with 262 rows, 735 columns and 735 nonzeros
Model has 522 quadratic constraints
Presolve removed 0 rows and 13 columns
Presolve time: 3.05s
Presolved: 262 rows, 722 columns, 722 nonzeros
Variable types: 522 continuous, 200 integer (199 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                     129.0000000          -     -      -    3s
     0     0    0.00000    0    9  129.00000    0.00000   100%     -    3s
     0     0    0.00000    0    2  129.00000    0.00000   100%     -    3s
     0     0    0.00000    0   98  129.00000    0.00000   100%     -    3s
     0     2    0.00000    0   97  129.00000    0.00000   100%     -    3s
H   48    48                      30.0000000    0.98251  96.7%  32.2    3s
*   49    49              38      26.0000000    0.98251  96.2%  33.3    3s
H  156    78                      23.0000000    3.62963  84.2%  21.4    3s
   607   312    9.49084   11  716   23.00000    9.49084  58.7%  27.1    5s
*  657   327              36      21.0000000    9.49084  54.8%  29.4    5s
H  693   319                      20.0000000    9.49084  52.5%  32.5    5s
  2530   227   17.68214   32  424   20.00000   14.58491  27.1%  35.3   10s
  3395    95     cutoff   42        20.00000   16.61538  16.9%  34.6   15s

Explored 3631 nodes (124491 simplex iterations) in 15.56 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.000000000000e+01, best bound 2.000000000000e+01, gap 0.0%