Z3 partial order doesn't seem to be reflexive Question: I am trying to learn to use the Z3 solver. In this tutorial it is explained that a partial order is best defined using the built-in PartialOrder function. It seems to me that the resulting order is not reflexive, as the following bit of code returns …
Path hunting with Z3 solver Question: I am modeling below problem in Z3. The aim is to find the path for Agent to reach the coin avoiding obstacles. Initial_grid =[[‘T’ ‘T’ ‘T’ ‘T’ ‘T’ ‘T’ ‘T’] [‘T’ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘T’] [‘T’ ‘ ‘ ‘A’ ‘O’ ‘ ‘ …
Sorting a list using sorted, key and lambda Question: i have this list which is a z3 model: list = [x_2 = 0, x_1 = 1, x_3 = 27, x_11 = 1, x_18 = 4, x_17 = 6, x_26 = 4, x_12 = 4, x_7 = 2, x_22 = 8, x_23 = 27, x_21 = …
Python Z3, rule to make 2 numbers be 2 certain numbers in a 2D array Question: If i have 2 z3 Ints for examaple x1 and x2, and a 2d array of numbers for example: list = [[1,2],[12,13],[45,7]] i need to right a rule so that x1 and x2 are any of the pairs of …
z3 python change logic gate children Question: My algorithm needs to modify the children() of the existing logic gate. Suppose i have the following code a = Bool(‘a’) b = Bool(‘b’) c = Bool(‘c’) or_gate = Or(a, b) I want to modify or_gate to be Or(a, c). I have tried the following: or_gate.children()[1] = c …
Is there a way to convert z3.z3.ArithRef Real to Numpy Float64? Question: I recently started using Microsoft Z3 for Theorem Proving and I was wondering if there was a way to convert the Z3 Real Numbers to Python Floating Point Numbers so that I can pass them to other complex functions. This is what I …
Evaluating assigned variables and clauses in Z3? Question: I’m new to z3 so this may be really easy. I have some variables and clauses: d = { "p0": Bool("p0"), "p1": Bool("p1"), "p2": Bool("p2"), "p3": Bool("p3") } d[‘p4’] = And([d["p0"], Or([d["p1"],d["p2"]])]) d[‘p5’] = d[‘p4’] d[‘p6’] = And([d["p3"], d[‘p5’]]) d[‘p7’] = And([d[‘p2’],d[‘p3’]]) I can obtain a satisfying …
How to declare a natural number variable in z3py? Question: I want to reason about natural numbers in my constraints. I know that I can do something like: x = Int(‘x’) and then add a constraint that x >= 0. But is there a better way of doing this so that I don’t have to …
Z3 Not Showing Infinity on Unbounded Optimization in Python Question: I am new to Z3 and trying the examples found here, implementing the examples in python. When I try the examples in the "Unbounded Objectives" section I get seemingly random integer values (not ‘oo’). For the following code: x, y = Ints(‘x y’) opt = …
