Dominik Winterer Ph.D. Student Department of Computer Science ETH Zurich, Switzerland Email: dominik.winterer@inf.ethz.ch Office: CNB H 103.2

About

Dominik Winterer is a fourth-year Ph.D. student at ETH Zurich advised by Prof. Zhendong Su and a member of the AST lab since March 2019. He is interested in formal methods problems in Programming Languages and Software Engineering. Before his Ph.D. studies, Dominik did research in Automated Planning. In 2018, Dominik received an MSc. in computer science from the University of Freiburg (Germany). In the summer of 2017, Dominik interned at IBM Research NY, where he worked on top-k planning.

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Currently, Dominik's primary research goal is to make SMT solvers more robust, reliable, and performant through principled, general automated testing techniques with a potential to be applicable beyond SMT solvers. His tools have found 1,500+ bugs in the flagship SMT solvers Z3 and CVC5; 400+ are critical soundness bugs.

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Dominik is the organizer of the Future of Software Seminar at ETH Zurich.

News

Research

Project Yin-Yang for SMT Solver Testing. Satisfiability Modulo Theory (SMT) solvers are foundational tools for many subareas of computer science, including formal verification, programming languages, and software engineering. Their reliability and robustness are crucial, especially for the safety-critical domains. However, effectively validating SMT solvers has been a longstanding challenge. The goal of Project Yin-Yang is to develop novel, effective, practical methods and techniques to help make SMT solvers more reliable, powerful, and usable. [Z3/CVC4/5 Bugs: 1,560 (total) / 1,061 (fixed)] [Reports: YinYang, OpFuzz,TypeFuzz]

Selected Publications (all)

1. Finding and Understanding Incompleteness Bugs in SMT Solvers
   Mauro Bringolf, Dominik Winterer, Zhendong Su
   In Proceedings of ASE 2022 (conditionally accepted)
   

2. Generative Type-Aware Mutation for Testing SMT Solvers
   Jiwon Park^*, Dominik Winterer^*, Chengyu Zhang, Zhendong Su
   In Proceedings of SPLASH/OOPSLA 2021   [slides / video abstract]
   ^* Both authors contributed equally.

3. On the Unusual Effectiveness of Type-Aware Mutations for Testing SMT Solvers
   Dominik Winterer^*, Chengyu Zhang^*, Zhendong Su
   In Proceedings of SPLASH/OOPSLA 2020   [slides / video abstract]
   ^* Both authors contributed equally.

4. Validating SMT Solvers via Semantic Fusion
   Dominik Winterer^*, Chengyu Zhang^*, Zhendong Su
   In Proceedings of PLDI 2020   [slides / video abstract]
   ^* Both authors contributed equally.
   

   Distinguished Paper Award

   Invited to TOPLAS special issue on PLDI '20

Supervised Students

• Altin Alickaj (Semester project, ongoing)

• Jiwon Park (Bachelor thesis, completed)   → Ph.D. student @UC Berkeley

  • 2nd place@FSE '21 SRC
  • Co-first author of OOPSLA '21 paper

• Mauro Bringolf (Master thesis, completed) → Software Engineer @University of St. Gallen

  • First author of ASE'22 paper

• Dylan J Wolff (Master thesis, completed)  → Ph.D. student @National University of Singapore

Awards and Grants

• Amazon Research Award 2022 (Co-PI)

• Heidelberg Laureate Forum 2022

• Google Open Source Peers Bonus 2021 (for yinyang)

• PLDI '20 Distinguished Paper Award

• IJCAI '16 Travel Grant Award

Invited Talks

• Finding 1,500+ Bugs in the SMT Solvers Z3 and CVC5. [slides]
  @Paderborn University. Jun 2022.

• Finding 1,000+ Bugs in the SMT solvers Z3 and CVC4.
  @CEA List at Paris Saclay (virtual). Feb 2021.

Service

• SIGPLAN-M Longterm mentoring (Oct '21 - now)

• Program Committee Member: SYNASC '22

• Reviewer TSE '21

• Reviewer/Judge Student Research Competition: OOPSLA '21

• Artifact Evaluation Committee Member: ISSTA '21, POPL '21, PLDI '22

• Reviewer: JAIR '17, AAAI '20, AAAI '21

Teaching

@ETH Zurich

• Formal Methods and Functional Programming, Spring 2022

• Software Engineering, Spring 2021 (Head TA)

• Data Modelling and Databases, Spring 2020

• Research Topics in Software Engineering, Spring 2020, 2021, 2022, Fall 2020
  

• Compiler Design, Fall 2019, 2020, 2021 (Head TA)
  

@University of Konstanz

• Decision Procedures, Fall 2018

• Software Engineering, Fall 2018

@University of Freiburg

• Model Checking, Fall 2016
  

• Theoretical Computer Science, Fall 2016