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Questions tagged [z3py]

Python interface for the Z3 Theorem Prover

z3py - Python interface for the Z3 Theorem Prover. Z3 is a high-performance theorem prover. Z3 supports arithmetic, fixed-size bit-vectors, extensional arrays, datatypes, uninterpreted functions, and quantifiers.

834 questions
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Need help in understading the counter example

Can somebody please explain why I am getting a counter example with this py code. a = Int('a') def X(a): if (a == 3): return 1 else: return 2 z3.prove( X(a) == If (a == 3, 1, 2) ) counterexample [a = 3]
Sandeep Dasgupta
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Mathematic equation

I have this equation : S = val.X^3 - val.X^2 + val.X -val Knowing that all the the variables are int64, and S and val are known values, what is the best way to solve it, I used numpy and Z3, but can't get the right answer, any lead would be helpful
soolidsnake
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How to quick copy pyz3 solvers

I'm running into a situation where I'd really love a copy feature for the Z3 Solver. By this I mean, I have a solver instantiated with some constraints. I now want to copy it so that I have two independent solvers. At the moment, I'm doing this by…
Owl Owl
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how to set a pattern in a variable using Z3Py

I'm pretty new in Z3, but a thing that my problem could be resolved with it. I have two variables A and B and two pattern like this: pattern_1: 1010x11x pattern_2: x0x01111 where 1 and 0 are the bits zero and one, and x (dont care) cold be the bit…
Georgia
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how to use Numba to run z3py solver on GPU

I want to run z3 solver methods such as 'solver.check()' on GPU using Numba to speed up solving. Is it possible? How can I do it? I tested '@jit' but I can't get result. Edit: This is my code: @jit def solve(self, goal): solver = z3.Solver() …
Majid Feyzi
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Minimizing the Image of a function with an Optimizer

Is it possible to minimize the image of a function with an Optimizer? If not, how else would I go about achieving it? The function is defined as (declare-fun vmorph (V) V) where V is (declare-datatypes () ((V V1 V2 V3 V4 V5 V6))). There's other…
user2247969
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Reduce the time for multiple modles

It get Multiple Models But It takes hours of time.So Kindly suggest me to reduce the time to get all models.how to get all possible solution for Satisfy equation in less time? Is there any function in z3python for getting all possible solutions in…
praveen gundaram
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Is there a way to maximize sum using minimum entries from a list?

I am trying to find minimum number of entries in a list or vector which constitute maximum sum. Is there a way to find it? I am trying as follows but not success: D=[[Real('d%s%s' % (i+1,j+1)) for j in range(input)] for i in range…
Rauf
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python z3 printing a sorted model

In this question here: How to print z3 solver results print(s.model()) in order? the first answer points out the problem of 10 coming after 1, and it only being sorted by the first digit, however he says with more processing it could be fixed, what…
SomethingNormal123
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