可以从 Z3 得到最终的 CNF 公式吗? [英] Can get final CNF formula from Z3?

问题描述

这是我的简单编码.我想得到呈现所有这些约束的最终布尔 CNF.Z3求解器中是否有任何选项可以获得最终的布尔CNF?

Here is my simple encoding. I would like to get the final Boolean CNF that presents all these constrains. Is there any option in Z3 solver to get the final Boolean CNF ?

x = Int('x')
y = Int('y')

c1 = And(x >= 1, x <= 10)
c2 = And(y >= 1, y <= 10)
c3 = Distinct(x,y)

s = Solver()
s.add(c1 , c2 , c3)
# I need the final Boolean CNF formula from Z3 solver...

谢谢&问候

推荐答案

正如 Ayrat 所说，使用目标和策略.这是一个例子:http://rise4fun.com/Z3Py/4I3

As Ayrat says, use goals and tactics. Here is an example: http://rise4fun.com/Z3Py/4I3

x = Int('x')
y = Int('y')

c1 = And(x >= 1, x <= 10)
c2 = And(y >= 1, y <= 10)
c3 = Distinct(x,y)

g = Goal()
g.add(c1 , c2 , c3)

describe_tactics()

t = Tactic('tseitin-cnf')
print t(g)

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