Gurobi 5.0.1 (linux64) logging started Sun Nov 18 08:23:34 2012

Optimize a model with 293 rows, 820 columns and 820 nonzeros
Model has 584 quadratic constraints
Presolve removed 0 rows and 18 columns
Presolve time: 3.45s
Presolved: 293 rows, 802 columns, 802 nonzeros
Variable types: 584 continuous, 218 integer (217 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                     151.0000000          -     -      -    3s
     0     0    0.00000    0   96  151.00000    0.00000   100%     -    3s
     0     0    0.00000    0  139  151.00000    0.00000   100%     -    3s
     0     0    0.00000    0  139  151.00000    0.00000   100%     -    3s
     0     2    0.00000    0  139  151.00000    0.00000   100%     -    3s
H   41    41                      27.0000000    2.68571  90.1%  38.7    3s
H  418   242                      25.0000000    6.49540  74.0%  22.2    4s
   623   345   15.53038   23  583   25.00000    8.81818  64.7%  29.1    5s
*  967   431              49      22.0000000    8.81818  59.9%  37.1    6s
  2360   261   18.55271   31  477   22.00000   16.03085  27.1%  35.5   10s
  3115   154   20.76000   32  462   22.00000   18.18824  17.3%  35.5   15s

Explored 3397 nodes (120687 simplex iterations) in 19.42 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%