generation        minimum fitness
 0                  -2.693912  

 1                  -1.597196  

 2                  -0.829289  

 3                  -0.831444  

 4                  -0.673168  

 5                  -0.825846  

 6                  -0.674079  

 7                  -0.670132  

 8                  -0.546413  

 9                  -0.546045