Minimal example is the following: Given a set of possible integers [1, 2, 3]
create an arbitrary list of size 5 using z3py. Duplicates are allowed.
The expected result is something like [1, 1, 1, 1, 1]
or [3, 1, 2, 2, 3]
, etc.
How to tackle this problem and how to implement 'choosing'? Finally, I would like to find all solutions which can be done by adding additional constraints as explained in link. Any help will be very appreciated.
The following should work:
from z3 import *
def choose(elts, acceptable):
s = Solver()
s.add(And([Or([x == v for v in acceptable]) for x in Ints(elts)]))
models = []
while s.check() == sat:
m = s.model ()
if not m:
break
models.append(m)
block = Not(And([v() == m[v] for v in m]))
s.add(block)
return models
print choose('a b c d e', [1, 2, 3])