Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:31:34 2012

Optimize a model with 135 rows, 344 columns and 344 nonzeros
Model has 268 quadratic constraints
Presolve removed 0 rows and 2 columns
Presolve time: 1.56s
Presolved: 135 rows, 342 columns, 342 nonzeros
Variable types: 268 continuous, 74 integer (73 binary)

Root relaxation: objective 0.000000e+00, 38 iterations, 0.00 seconds

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

H    0     0                      64.0000000          -     -      -    1s
     0     0    0.00000    0   60   64.00000    0.00000   100%     -    1s
     0     0    0.27636    0   70   64.00000    0.27636   100%     -    1s
     0     2    0.35952    0   70   64.00000    0.35952  99.4%     -    1s
H    8     8                      60.0000000    3.22668  94.6%  29.9    1s
*   30    30              19      25.0000000    3.22668  87.1%  38.3    1s
H  116    87                      24.0000000    3.41588  85.8%  32.5    1s
*  408   175              12      23.0000000    8.47000  63.2%  26.3    1s
  3703   456   21.79104   40  204   23.00000   18.50000  19.6%  18.9    5s
* 4200   271              34      22.0000000   19.31818  12.2%  18.2    5s

Explored 4537 nodes (80653 simplex iterations) in 5.47 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.200000000000e+01, best bound 2.200000000000e+01, gap 0.0%