Gurobi 5.0.1 (linux64) logging started Sun Nov 18 08:31:19 2012

Optimize a model with 293 rows, 821 columns and 821 nonzeros
Model has 584 quadratic constraints
Presolve removed 0 rows and 22 columns
Presolve time: 3.45s
Presolved: 293 rows, 799 columns, 799 nonzeros
Variable types: 584 continuous, 215 integer (214 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                     153.0000000          -     -      -    3s
     0     0    0.00000    0   88  153.00000    0.00000   100%     -    3s
     0     0    0.00000    0  140  153.00000    0.00000   100%     -    3s
     0     0    0.00000    0  140  153.00000    0.00000   100%     -    3s
     0     2    0.00000    0  140  153.00000    0.00000   100%     -    3s
*   32    30              24      25.0000000    3.00000  88.0%  38.1    3s
   603   329   20.02237   13  494   25.00000    9.15000  63.4%  24.7    5s
* 1123   492              62      24.0000000    9.15000  61.9%  40.7    7s
H 1124   441                      23.0000000    9.15000  60.2%  40.6    7s
H 1262   416                      22.0000000   10.54264  52.1%  40.7    8s
H 1289   374                      21.0000000   10.79528  48.6%  40.5    8s
  1933   342   17.50000   35  487   21.00000   13.00000  38.1%  39.8   10s
* 2682   319              40      20.0000000   15.00000  25.0%  40.7   12s
  3236   111   17.97765   37  453   20.00000   17.28363  13.6%  41.6   15s

Explored 3392 nodes (140408 simplex iterations) in 16.15 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.000000000000e+01, best bound 2.000000000000e+01, gap 0.0%