Gurobi 5.0.1 (linux64) logging started Sun Nov 18 09:20:14 2012

Optimize a model with 300 rows, 839 columns and 839 nonzeros
Model has 598 quadratic constraints
Presolve removed 0 rows and 19 columns
Presolve time: 3.49s
Presolved: 300 rows, 820 columns, 820 nonzeros
Variable types: 598 continuous, 222 integer (221 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                     140.0000000          -     -      -    3s
     0     0    0.00000    0  106  140.00000    0.00000   100%     -    3s
     0     0    0.00000    0  186  140.00000    0.00000   100%     -    3s
     0     0    0.00000    0  182  140.00000    0.00000   100%     -    3s
     0     2    0.00000    0  181  140.00000    0.00000   100%     -    3s
H   49    49                      29.0000000    2.94915  89.8%  39.8    3s
*   49    49              27      28.0000000    2.94915  89.5%  39.8    3s
H   81    53                      25.0000000    2.96639  88.1%  35.6    3s
*  485   219              19      24.0000000   10.41667  56.6%  31.6    4s
   643   266     cutoff   32        24.00000   11.18182  53.4%  37.3    5s
* 2021   203              44      23.0000000   18.09945  21.3%  32.8    8s

Explored 2450 nodes (80303 simplex iterations) in 9.48 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.300000000000e+01, best bound 2.300000000000e+01, gap 0.0%