Gurobi 5.0.1 (linux64) logging started Sun Nov 18 08:06:05 2012

Optimize a model with 278 rows, 788 columns and 788 nonzeros
Model has 554 quadratic constraints
Presolve removed 0 rows and 13 columns
Presolve time: 3.23s
Presolved: 278 rows, 775 columns, 775 nonzeros
Variable types: 554 continuous, 221 integer (220 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                     130.0000000          -     -      -    3s
     0     0    0.00000    0   50  130.00000    0.00000   100%     -    3s
     0     0    0.00000    0   51  130.00000    0.00000   100%     -    3s
     0     0    0.00000    0   50  130.00000    0.00000   100%     -    3s
     0     2    0.00000    0   50  130.00000    0.00000   100%     -    3s
H   24    24                      21.0000000    3.16667  84.9%  60.8    3s
*  203    97              38      20.0000000    4.60870  77.0%  23.8    3s
H  409   147                      18.0000000    8.42268  53.2%  21.8    3s
   601   193   14.32450    7   50   18.00000   10.58857  41.2%  23.2    6s
  1292   270   13.00000   31  480   18.00000   10.85294  39.7%  35.6   10s
* 3827   245              40      17.0000000   14.57120  14.3%  30.0   14s
  3835   239     cutoff   32        17.00000   14.59165  14.2%  30.0   15s

Explored 4138 nodes (125362 simplex iterations) in 15.51 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.700000000000e+01, best bound 1.700000000000e+01, gap 0.0%