Gurobi 5.0.1 (linux64) logging started Sun Nov 18 08:23:17 2012

Optimize a model with 272 rows, 778 columns and 778 nonzeros
Model has 542 quadratic constraints
Presolve removed 0 rows and 18 columns
Presolve time: 3.14s
Presolved: 272 rows, 760 columns, 760 nonzeros
Variable types: 542 continuous, 218 integer (217 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                     116.0000000          -     -      -    3s
     0     0    0.00000    0   53  116.00000    0.00000   100%     -    3s
     0     0    0.00000    0   86  116.00000    0.00000   100%     -    3s
     0     0    0.00000    0   71  116.00000    0.00000   100%     -    3s
     0     2    0.00000    0   62  116.00000    0.00000   100%     -    3s
H   37    37                      24.0000000    2.00000  91.7%  48.8    3s
*  190   114              28      21.0000000    4.78182  77.2%  25.7    3s
   607   265    7.66994   13  720   21.00000    7.66994  63.5%  25.5    5s
* 1155   380              50      18.0000000    7.83158  56.5%  52.1    7s
  2063   265   16.10526   37  446   18.00000   11.24031  37.6%  46.9   10s
  3403    95   15.68757   37  429   18.00000   14.84615  17.5%  40.4   15s

Explored 3628 nodes (144746 simplex iterations) in 16.52 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.800000000000e+01, best bound 1.800000000000e+01, gap 0.0%