Arie Gurfinkel - Professor at University of Waterloo

Arie Gurfinkel

Professor at University of Waterloo

Waterloo, Ontario, Canada

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Summary

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Arie Gurfinkel is a professor of computer science at the University of Waterloo with 11 years of post-academic experience and a two-decade trajectory in automated program verification, static analysis, and model checking. His career spans principal research at the Software Engineering Institute to faculty leadership, grounded in a PhD from the University of Toronto. Arie is an active contributor to major verification open-source projects such as Z3 and SeaHorn, where he has improved APIs, fixed subtler correctness bugs (e.g., preventing spurious counterexamples in loop unrolling), and extended tooling for SMT2 and symbolic execution. He blends deep theoretical expertise with practical engineering—factoring utilities for quantifiers and exposing iterator APIs—so his work often reduces friction between research prototypes and robust verification tooling. Based in Waterloo, Ontario, he is known for pragmatic fixes that reveal a detective’s attention to subtle semantic issues in automated reasoning.

11 years of coding experience

16 years of employment as a software developer

Ph.D., Computer Science, Ph.D., Computer Science at University of Toronto

English, Russian

Github Skills (10)

code-generation10

c-language10

api10

cprogramming-language10

apidoc10

llvm10

data-structure9

static-analysis9

loop-unrolling9

data-structures9

Programming languages (13)

C++CRustCMakeTeXMakefileHTMLJupyter Notebook

Github contributions (5)

seahorn/seahorn

Mar 2015 - Jan 2023

SeaHorn Verification Framework

Role in this project:

Backend Developer

Contributions:5 releases, 263 reviews, 915 commits in 7 years 11 months

Contributions summary:Arie focused on improving the SeaHorn Verification Framework by implementing transformations within the SymExec engine and LoopUnroll pass. They addressed a critical bug by mapping expressions to (x mod 2^n), preventing spurious counterexamples and improving the loop unrolling process. Additionally, they made contributions to code licensing and options for keeping known library function declarations, and also contributed to fixing an issue that enabled the use of printf in counter-example construction.

model-checkingsmtsecurityhorn-clausesabstract-interpretation

Z3Prover/z3

Jun 2017 - Sep 2022

The Z3 Theorem Prover

Role in this project:

Back-end Developer

Contributions:10 reviews, 360 commits, 53 PRs in 5 years 3 months

Contributions summary:Arie contributed to the Z3 Theorem Prover, focusing on improving existing APIs and adding new functionalities. Their work included extending the API for accumulating stopwatches, exposing iterator APIs for object hash tables and expression maps, and adding a method to check for hypotheses. Additionally, the user ensured that variable names were properly quoted in SMT2 printing and factored out utilities for quantifiers.

theorem-proverprovertheorem

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