Gurobi 5.0.1 (linux64) logging started Sun Nov 18 07:19:29 2012

Optimize a model with 268 rows, 761 columns and 761 nonzeros
Model has 534 quadratic constraints
Presolve removed 0 rows and 24 columns
Presolve time: 3.11s
Presolved: 268 rows, 737 columns, 737 nonzeros
Variable types: 534 continuous, 203 integer (202 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                     131.0000000          -     -      -    3s
     0     0    0.00000    0   62  131.00000    0.00000   100%     -    3s
     0     0    0.00000    0   58  131.00000    0.00000   100%     -    3s
     0     0    0.00000    0  154  131.00000    0.00000   100%     -    3s
     0     2    0.00000    0  154  131.00000    0.00000   100%     -    3s
H   39    37                      21.0000000    1.99301  90.5%  50.6    3s
*   39    30              25      20.0000000    1.99301  90.0%  50.6    3s
   606   227    8.00628   10  450   20.00000    8.00628  60.0%  34.0    5s
* 1400   256              33      18.0000000   10.67742  40.7%  38.1    7s

Explored 2417 nodes (90243 simplex iterations) in 9.61 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%