Gurobi 5.0.1 (linux64) logging started Sun Nov 18 09:10:28 2012

Optimize a model with 298 rows, 834 columns and 834 nonzeros
Model has 594 quadratic constraints
Presolve removed 0 rows and 20 columns
Presolve time: 3.46s
Presolved: 298 rows, 814 columns, 814 nonzeros
Variable types: 594 continuous, 220 integer (219 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   73  133.00000    0.00000   100%     -    3s
     0     0    0.00000    0  109  133.00000    0.00000   100%     -    3s
     0     0    0.00000    0  174  133.00000    0.00000   100%     -    3s
     0     2    0.00000    0  172  133.00000    0.00000   100%     -    3s
H   48    48                      33.0000000    3.00246  90.9%  39.2    3s
*   56    52              34      30.0000000    3.00246  90.0%  38.1    3s
H  151   123                      29.0000000    3.52192  87.9%  26.9    3s
*  196   148              15      27.0000000    3.53846  86.9%  29.2    4s
   607   357    9.29204   10  787   27.00000    9.29204  65.6%  34.6    5s
*  753   402              48      26.0000000    9.29204  64.3%  42.6    5s
* 1578   343              41      25.0000000   15.00111  40.0%  37.7    8s
  2139   337     cutoff   39        25.00000   16.81818  32.7%  35.0   10s
H 2354   297                      23.0000000   17.15152  25.4%  33.9   10s
  2991   210   22.51955   32  465   23.00000   19.36250  15.8%  32.9   15s

Explored 3456 nodes (111129 simplex iterations) in 17.97 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%