Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:27:26 2012

Optimize a model with 253 rows, 720 columns and 720 nonzeros
Model has 504 quadratic constraints
Presolve removed 0 rows and 16 columns
Presolve time: 2.94s
Presolved: 253 rows, 704 columns, 704 nonzeros
Variable types: 504 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                     113.0000000          -     -      -    2s
     0     0    0.00000    0    2  113.00000    0.00000   100%     -    2s
     0     0    0.00000    0   44  113.00000    0.00000   100%     -    2s
     0     0    0.00000    0    3  113.00000    0.00000   100%     -    2s
     0     2    0.00000    0  122  113.00000    0.00000   100%     -    3s
H   54    54                      21.0000000    2.31034  89.0%  47.8    3s
*   85    75              55      20.0000000    2.31034  88.4%  38.3    3s
*   97    60              61      19.0000000    2.31034  87.8%  35.7    3s
*  163    78              25      18.0000000    3.29936  81.7%  27.7    3s
   643   286   17.68750   33  239   18.00000    8.27522  54.0%  30.2    5s
*  776   312              48      17.0000000    8.27522  51.3%  36.2    5s
* 2206    86              45      16.0000000   13.07143  18.3%  34.9    8s

Explored 2354 nodes (81845 simplex iterations) in 8.93 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.600000000000e+01, best bound 1.600000000000e+01, gap 0.0%