Gurobi 5.0.1 (linux64) logging started Sun Nov 18 09:11:13 2012

Optimize a model with 305 rows, 848 columns and 848 nonzeros
Model has 608 quadratic constraints
Presolve removed 0 rows and 17 columns
Presolve time: 3.54s
Presolved: 305 rows, 831 columns, 831 nonzeros
Variable types: 608 continuous, 223 integer (222 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                     133.0000000          -     -      -    3s
     0     0    0.00000    0  177  133.00000    0.00000   100%     -    3s
     0     0    0.28373    0  210  133.00000    0.28373   100%     -    3s
     0     2    0.30127    0  210  133.00000    0.30127   100%     -    3s
H   54    54                      30.0000000    3.06667  89.8%  29.7    3s
*   60    60              37      29.0000000    3.06667  89.4%  29.3    3s
H   78    69                      28.0000000    3.06667  89.0%  26.5    3s
   612   338   11.35484   16  708   28.00000   11.35484  59.4%  34.5    5s
*  652   345              36      27.0000000   11.35484  57.9%  38.7    5s
*  663   323              38      26.0000000   11.35484  56.3%  38.5    5s
   801   374   16.35294   19  210   26.00000   11.35484  56.3%  50.0   13s
  1119   426   15.80851   28  473   26.00000   11.35484  56.3%  47.4   15s
* 1906   299              35      25.0000000   15.92857  36.3%  39.9   17s
  2614   320   20.80645   31  479   25.00000   17.45572  30.2%  36.7   20s
  3168   310   23.72289   34  457   25.00000   18.53333  25.9%  35.3   25s
  4206   174   23.49425   32  448   25.00000   20.56522  17.7%  34.0   30s

Explored 4622 nodes (155899 simplex iterations) in 32.64 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.500000000000e+01, best bound 2.500000000000e+01, gap 0.0%