Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:07:23 2012

Optimize a model with 238 rows, 678 columns and 678 nonzeros
Model has 474 quadratic constraints
Presolve removed 0 rows and 21 columns
Presolve time: 2.76s
Presolved: 238 rows, 657 columns, 657 nonzeros
Variable types: 474 continuous, 183 integer (182 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                     118.0000000          -     -      -    2s
     0     0    0.00000    0    6  118.00000    0.00000   100%     -    2s
     0     0    0.00000    0    2  118.00000    0.00000   100%     -    2s
     0     0    0.00000    0  131  118.00000    0.00000   100%     -    2s
     0     2    0.00000    0  130  118.00000    0.00000   100%     -    2s
H   40    40                      25.0000000    3.91489  84.3%  37.3    2s
*   65    65              44      20.0000000    3.91489  80.4%  29.5    3s
*   76    57              54      19.0000000    3.91489  79.4%  25.8    3s
*  482   179              25      18.0000000    7.72549  57.1%  20.1    3s
   740   278   17.00152   30  250   18.00000    8.53846  52.6%  34.0    5s
*  900   258              39      17.0000000    8.53846  49.8%  32.5    5s
* 1196   163              36      16.0000000   10.72727  33.0%  31.8    5s

Explored 1452 nodes (47882 simplex iterations) in 6.50 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%