Gurobi 5.0.1 (linux64) logging started Sun Nov 18 07:46:44 2012

Optimize a model with 289 rows, 807 columns and 807 nonzeros
Model has 576 quadratic constraints
Presolve removed 0 rows and 21 columns
Presolve time: 3.36s
Presolved: 289 rows, 786 columns, 786 nonzeros
Variable types: 576 continuous, 210 integer (209 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                     148.0000000          -     -      -    3s
     0     0    0.00000    0   60  148.00000    0.00000   100%     -    3s
     0     0    0.00000    0   88  148.00000    0.00000   100%     -    3s
     0     0    0.00000    0   79  148.00000    0.00000   100%     -    3s
     0     2    0.00000    0   79  148.00000    0.00000   100%     -    3s
H   54    54                      32.0000000    2.24138  93.0%  32.1    3s
*   54    54              41      30.0000000    2.24138  92.5%  32.2    3s
H   83    71                      28.0000000    2.25000  92.0%  28.4    3s
H  193   101                      25.0000000    4.66280  81.3%  25.9    3s
*  281   142              20      24.0000000    5.26039  78.1%  25.8    3s
   605   269   16.89974   12  486   24.00000    8.93902  62.8%  24.9    5s
  2305   495   22.88318   36  450   24.00000   15.93248  33.6%  31.4   10s
* 4072   581              40      23.0000000   18.00000  21.7%  28.6   13s
  4707   442   19.84615   38  358   23.00000   19.28571  16.1%  29.0   15s

Explored 5383 nodes (155685 simplex iterations) in 16.19 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%