Gurobi 5.0.1 (linux64) logging started Sun Nov 18 08:02:34 2012

Optimize a model with 290 rows, 811 columns and 811 nonzeros
Model has 578 quadratic constraints
Presolve removed 0 rows and 25 columns
Presolve time: 3.37s
Presolved: 290 rows, 786 columns, 786 nonzeros
Variable types: 578 continuous, 208 integer (207 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  126  140.00000    0.00000   100%     -    3s
     0     0    0.00000    0  178  140.00000    0.00000   100%     -    3s
     0     0    0.00000    0  177  140.00000    0.00000   100%     -    3s
     0     2    0.00000    0  170  140.00000    0.00000   100%     -    3s
H   54    54                      29.0000000    2.54545  91.2%  44.8    3s
H  135   112                      28.0000000    5.56291  80.1%  37.3    3s
*  153   107              27      27.0000000    5.56291  79.4%  34.6    3s
*  214   119              36      23.0000000    5.75893  75.0%  34.6    3s
   603   248   19.79356   10  493   23.00000   10.28000  55.3%  33.2    5s
  1949   478   22.56757   40  472   23.00000   12.42105  46.0%  41.7   10s
  3987   896   20.20815   30  477   23.00000   15.67647  31.8%  38.2   15s
  6129  1032     cutoff   34        23.00000   17.25641  25.0%  36.7   20s
  8493   977     cutoff   34        23.00000   18.61962  19.0%  35.0   25s
 10795   668     cutoff   38        23.00000   19.77778  14.0%  34.6   30s

Explored 12733 nodes (431751 simplex iterations) in 33.69 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%