POP_SIZE        = 60
MUTATION_RATE   = 15
MUTATION_RATE_INC = 0.001

MAX_STR         = 3
MAX_S2L         = 15
MAX_CLEAN       = 5

POP_SIZE = 500
MUTATION_RATE = 15
MUTATION_RATE_INC = 0.001

MAX_STR = 5
MAX_S2L = 15
MAX_CLEAN = 5

Increase parameters