Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:16:03 2012

Optimize a model with 253 rows, 715 columns and 715 nonzeros
Model has 504 quadratic constraints
Presolve removed 0 rows and 21 columns
Presolve time: 2.94s
Presolved: 253 rows, 694 columns, 694 nonzeros
Variable types: 504 continuous, 190 integer (189 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                     132.0000000          -     -      -    2s
     0     0    0.00000    0  143  132.00000    0.00000   100%     -    2s
     0     0    0.16322    0  172  132.00000    0.16322   100%     -    2s
     0     2    0.18519    0  172  132.00000    0.18519   100%     -    3s
H   52    52                      21.0000000    2.84000  86.5%  29.1    3s
*   54    46              30      20.0000000    2.84000  85.8%  29.6    3s
*  462   143              22      19.0000000    9.45283  50.2%  26.8    3s
   604   160   17.10526    8  432   19.00000   11.20000  41.1%  26.8    5s
  2202   271   18.50044   30  384   19.00000   14.00000  26.3%  34.0   10s

Explored 3636 nodes (119959 simplex iterations) in 13.15 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%