The Z3 Theorem Prover released under MIT license
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Submission timeline
2007–2026One slot for every year since HN launched. Height is that year's peak points; orange marks a 100+ point or 50+ comment breakout. Select a bar to open its strongest thread.
First comments on top threads
HN comment orderAmazing! When I was prototyping a programming language with support for contracts (or refined types, e.g. `x : int if x > 0`), I tested a few different SMT solvers, including AltErgo, CVC and Yices (these seemed to be the most used open source solvers). However, none of them were nearly as useful as Z3. In particular, they had no concept of a stack that allows the user to define different assertions locally, and then cancel them later. Without the…
This is not really meant as a critique, more of a general suggestion for implementers to improve their docs. As someone who teaches logic and works with standard logics from time to time (HOL with Lambek Calculus, normal and classical modal logics, and plain old FOL), I've found it unnecessarily hard to figure out from the docs with what logics you can implement in them, whether you can just load these and use them, how to enter formulas, how to…
Ah, looks like the submitter has been participating in Advent Of Code.
The first top-level comment from each of the four biggest threads, in HN’s own order. Excerpts are shortened; open a comment for full context.
- Breakout years
- 2
- Total points
- 495
- Total comments
- 97
100+ points or 50+ comments
reference only — not used in Hall rules or ranking
reference only — not used in Hall rules or ranking
Every submission
| Date | Title as submitted | By | Points | Comments |
|---|---|---|---|---|
| 2015-03-26 | The Z3 Theorem Prover released under MIT licenseFirst breakout · Best thread | dahlia | 304 | 66 |
| 2017-05-18 | Microsoft: The Z3 Theorem Prover | tosh | 3 | 0 |
| 2018-05-22 | Z3 | tosh | 1 | 0 |
| 2018-08-17 | Z3 | tosh | 6 | 0 |
| 2018-10-30 | Z3 | tosh | 3 | 0 |
| 2019-06-01 | The Z3 Theorem ProverHall induction | ____Sash---701_ | 137 | 29 |
| 2021-02-13 | Z3 | tosh | 1 | 0 |
| 2024-10-18 | Z3 Theorem Prover | okl | 2 | 0 |
| 2025-06-23 | Z3 Theorem Prover | klaussilveira | 3 | 0 |
| 2025-12-10 | The Z3 Theorem ProverLatest 20+ point return | benoitg | 35 | 2 |