Gurobi 5.0.1 (linux64) logging started Sun Nov 18 09:34:04 2012

Optimize a model with 284 rows, 808 columns and 808 nonzeros
Model has 566 quadratic constraints
Presolve removed 0 rows and 19 columns
Presolve time: 3.30s
Presolved: 284 rows, 789 columns, 789 nonzeros
Variable types: 566 continuous, 223 integer (222 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                     135.0000000          -     -      -    3s
     0     0    0.00000    0    7  135.00000    0.00000   100%     -    3s
     0     0    0.00000    0    3  135.00000    0.00000   100%     -    3s
     0     0    0.00000    0    3  135.00000    0.00000   100%     -    3s
     0     2    0.00000    0    2  135.00000    0.00000   100%     -    3s
H   40    40                      28.0000000    0.00000   100%  42.9    3s
*   62    53              46      26.0000000    0.00000   100%  34.3    3s
H  245   174                      25.0000000    1.44000  94.2%  33.6    3s
*  246   144              21      22.0000000    1.44000  93.5%  33.5    3s
*  454   226              23      21.0000000    6.00000  71.4%  28.6    4s
   663   323   18.61798   25  316   21.00000    7.66790  63.5%  39.4    5s
*  672   306              29      20.0000000    7.66790  61.7%  40.4    5s
   801   359   14.61538   21    3   20.00000    7.66790  61.7%  49.5   15s
H  859   364                      19.0000000    7.66790  59.6%  50.9   15s

Explored 2320 nodes (92874 simplex iterations) in 19.42 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.900000000000e+01, best bound 1.900000000000e+01, gap 0.0%