Welcome to the website of the 23rd International Conference on Verification, Model Checking, and Abstract Interpretation (VMCAI 2022).

VMCAI provides a forum for researchers from the communities of Verification, Model Checking, and Abstract Interpretation, facilitating interaction, cross-fertilization, and advancement of hybrid methods that combine these and related areas. VMCAI 2022 will be the 23rd edition in the series.

VMCAI will take place during January 16-18, 2022.

Invited Speakers

Videos of Talks

You can find the video recordings of talks on YouTube.

Proceedings

The proceedings can be found here: VMCAI 2022 on Springer

Free access will expire on February 15, 2022.

Sponsors

Dates
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Sun 16 Jan

Displayed time zone: Eastern Time (US & Canada) change

09:00 - 10:00
Invited TalkVMCAI at Salon I
Chair(s): Thomas Wies New York University
09:00
60m
Keynote
Sequential Information FlowRemote
VMCAI
Thomas A. Henzinger IST Austria, Austria
10:20 - 11:50
Static Analysis and Abstract InterpretationVMCAI at Salon I
Chair(s): Thomas Wies New York University
10:20
30m
Paper
Relational String Abstract DomainsRemote
VMCAI
Vincenzo Arceri University of Parma - Department of Mathematical, Physical, and Computer Sciences, Martina Olliaro Ca' Foscari University of Venice - Department of Environmental Sciences, Informatics and Statistics, Agostino Cortesi Università Ca' Foscari Venezia, Pietro Ferrara Università Ca' Foscari, Venezia, Italy
10:50
30m
Paper
Lightweight Shape Analysis based on Physical TypesInPerson
VMCAI
Olivier Nicole CEA LIST, France, Matthieu Lemerre CEA LIST, France, Xavier Rival INRIA/CNRS/ENS Paris
11:20
30m
Paper
A Flow-Insensitive-Complete Program RepresentationRemote
VMCAI
Solène Mirliaz ENS Rennes / IRISA / Inria, David Pichardie Facebook Paris
13:30 - 14:30
Privacy and SecurityVMCAI at Salon I
Chair(s): Vincenzo Arceri University of Parma - Department of Mathematical, Physical, and Computer Sciences
13:30
30m
Paper
Verifying Pufferfish Privacy in Hidden Markov ModelsRemote
VMCAI
Depeng Liu Institute of Software, Chinese Academy of Sciences, Bow-Yaw Wang Academia Sinica, Lijun Zhang Institute of Software, Chinese Academy of Sciences
14:00
30m
Paper
Verifying Solidity Smart Contracts Via Communication Abstraction in SmartACERemote
VMCAI
Scott Wesley University of Waterloo, Canada, Maria Christakis MPI-SWS, Jorge A. Navas Certora, inc., Richard Trefler University of Waterloo, Canada, Valentin Wüstholz ConsenSys, Arie Gurfinkel University of Waterloo
15:05 - 16:35
Satisfiability Modulo TheoriesVMCAI at Salon I
Chair(s): Natarajan Shankar SRI International, USA
15:05
30m
Paper
Generalized Arrays for Stainless FramesRemote
VMCAI
Georg Stefan Schmid EPFL, Switzerland, Viktor Kunčak EPFL, Switzerland
15:35
30m
Paper
NP Satisfiability for Arrays as PowersInPerson
VMCAI
Rodrigo Raya EPFL, Viktor Kunčak EPFL, Switzerland
16:05
30m
Paper
Bit-Precise Reasoning via Int-BlastingRemote
VMCAI
Yoni Zohar Bar Ilan University, Ahmed Irfan Stanford University, Makai Mann Stanford University, Aina Niemetz Stanford University, Andres Nötzli Stanford University, USA, Mathias Preiner Stanford University, Andrew Reynolds University of Iowa, Clark Barrett Stanford University, Cesare Tinelli University of Iowa

Mon 17 Jan

Displayed time zone: Eastern Time (US & Canada) change

09:00 - 10:00
Invited TalkVMCAI at Salon I
Chair(s): Bernd Finkbeiner CISPA Helmholtz Center for Information Security
09:00
60m
Keynote
Back to the Future: A Fresh Look at Linear Temporal LogicRemote
VMCAI
10:20 - 11:50
Model CheckingVMCAI at Salon I
Chair(s): Arie Gurfinkel University of Waterloo
10:20
30m
Paper
Automata-Driven Partial Order Reduction and Guided Search for LTL Model CheckingRemote
VMCAI
Peter Gjøl Jensen Aalborg University, Denmark, Jiri Srba Aalborg University, Nikolaj Jensen Ulrik Aalborg University, Simon Mejlby Virenfeldt Aalborg University
10:50
30m
Paper
Stateful Dynamic Partial Order Reduction for Model Checking Event-Driven Applications that Do Not TerminateRemote
VMCAI
Rahmadi Trimananda University of California at Irvine, USA, Weiyu Luo University of California, Irvine, Brian Demsky University of California at Irvine, Harry Xu University of California, Los Angeles (UCLA)
Link to publication DOI Pre-print Media Attached File Attached
11:20
30m
Paper
Scaling Up Livelock Verification for Network-on-Chip Routing AlgorithmsInPerson
VMCAI
Landon Taylor Utah State University, Zhen Zhang Utah State University
13:30 - 14:30
Formal Methods in Machine LearningVMCAI at Salon I
Chair(s): Rupak Majumdar MPI-SWS
13:30
30m
Paper
Fanoos: Multi-Resolution, Multi-Strength, Interactive Explanations for Learned SystemsRemote
VMCAI
David Bayani Carnegie Mellon University's School of Computer Science, Stefan Mitsch Carnegie Mellon University, USA
14:00
30m
Paper
Bisimulations for Neural Network ReductionInPerson
VMCAI
Pavithra Prabhakar Kansas State University
15:05 - 16:35
Program VerificationVMCAI at Salon I
Chair(s): Elizabeth Polgreen University of Edinburgh
15:05
30m
Paper
High Assurance Software for Financial Regulation and Business PlatformsRemote
VMCAI
Stephen Goldbaum Morgan Stanley, Attila Mihaly Morgan Stanley, Tosha Ellison Fintech Open Source Foundation, Earl Barr UCL, Mark Marron Microsoft Research
15:35
30m
Paper
Loop Verification with Invariants and ContractsRemote
VMCAI
Gidon Ernst Ludwig Maximilian University of Munich
Pre-print
16:05
30m
Paper
Making PROGRESS in Property Directed ReachabilityRemote
VMCAI
Tobias Seufert University of Freiburg, Christoph Scholl University of Freiburg, Arun Chandrasekharan OneSpin Solutions, Munich, Sven Reimer OneSpin Solutions, Munich, Tobias Welp OneSpin Solutions, Munich

Tue 18 Jan

Displayed time zone: Eastern Time (US & Canada) change

09:00 - 10:00
SynthesisVMCAI at Salon I
Chair(s): Viktor Kunčak EPFL, Switzerland
09:00
30m
Paper
Gradient-Descent for Randomized Controllers under Partial ObservabilityInPerson
VMCAI
Jip Spel RWTH Aachen University, Linus Heck RWTH Aachen University, Sebastian Junges University of California, Berkeley, Joshua Moerman Open University of the Netherlands, Joost-Pieter Katoen RWTH Aachen University
09:30
30m
Paper
Satisfiability and Synthesis Modulo OraclesRemote
VMCAI
Elizabeth Polgreen University of Edinburgh, Andrew Reynolds University of Iowa, Sanjit Seshia UC Berkeley
10:20 - 11:50
Probabilistic SystemsVMCAI at Salon I
Chair(s): Pavithra Prabhakar Kansas State University
10:20
30m
Paper
Out of Control: Reducing Probabilistic Models by Control-State EliminationInPerson
VMCAI
Tobias Winkler RWTH Aachen University, Johannes Lehmann RWTH Aachen University, Joost-Pieter Katoen RWTH Aachen University
10:50
30m
Paper
STAMINA 2.0: Improving Scalability of Infinite-StateStochastic Model CheckingRemote
VMCAI
Riley Roberts Utah State University, Thakur Neupane The MathWorks, Inc., Lukas Buecherl University of Colorado, Boulder, Chris Myers University of Colorado, Boulder, Zhen Zhang Utah State University
11:20
30m
Paper
EPMC Gets Knowledge in Multi-Agent SystemsRemote
VMCAI
Chen Fu Institute of Software at Chinese Academy of Sciences; University of Chinese Academy of Sciences, Ernst Moritz Hahn University of Twente, Yong Li Institute of Software, Chinese Academy of Sciences, Sven Schewe University of Liverpool, Meng Sun Peking University, Andrea Turrini State Key Laboratory of Computer Science, Institute of Software, Chinese Academy of Sciences, Lijun Zhang Institute of Software, Chinese Academy of Sciences
13:30 - 14:30
Invited TalkVMCAI at Salon I
Chair(s): Bernd Finkbeiner CISPA Helmholtz Center for Information Security
13:30
60m
Keynote
Simplifying Concurrent Programming via Synchronization SynthesisRemote
VMCAI
Isil Dillig University of Texas at Austin
15:05 - 16:05
Static Analysis and Hybrid SystemsVMCAI at Salon I
Chair(s): Yoni Zohar Bar Ilan University
15:05
30m
Paper
Fast Three-Valued Abstract Bit-Vector ArithmeticInPerson
VMCAI
Jan Onderka Czech Technical University in Prague, Stefan Ratschan The Czech Academy of Sciences
15:35
30m
Paper
Mixed Semantics Guided Layered Bounded Reachability Analysis of Compositional Linear Hybrid AutomataRemote
VMCAI
Yuming Wu Nanjing University, Lei Bu Nanjing University, Jiawan Wang Nanjing University, Xinyue Ren Nanjing University, Wen Xiong Nanjing University, Xuandong Li Nanjing University

Call for Papers

VMCAI 2022 is the 23rd International Conference on Verification, Model Checking, and Abstract Interpretation. The conference will be held during January 16-18, 2022. VMCAI provides a forum for researchers from the communities of Verification, Model Checking, and Abstract Interpretation, facilitating interaction, cross-fertilization, and advancement of hybrid methods that combine these and related areas.

Scope

The program of VMCAI 2022 will consist of refereed research papers as well as invited lectures and tutorials. Research contributions can report new results as well as experimental evaluations and comparisons of existing techniques.

Topics include, but are not limited to:

  • Program Verification
  • Model Checking
  • Abstract Interpretation
  • Abstract Domains
  • Program Synthesis
  • Static Analysis
  • Type Systems
  • Deductive Methods
  • Program Logics
  • First-Order Theories
  • Decision Procedures
  • Interpolation
  • Horn Clause Solving
  • Program Certification
  • Separation Logic
  • Probabilistic Programming and Analysis
  • Error Diagnosis
  • Detection of Bugs and Security Vulnerabilities
  • Program Transformations
  • Hybrid and Cyber-physical Systems
  • Concurrent and distributed Systems
  • Analysis of numerical properties
  • Analysis of smart contracts
  • Analysis of neural networks
  • Case Studies on all of the above topics

Submissions can address any programming paradigm, including concurrent, constraint, functional, imperative, logic, and object-oriented programming.

Important Dates AoE (UTC-12)

September 2nd, 2021 September 9th, 2021: Paper submission

October 7th, 2021 October 11th, 2021: Notification

November 15th, 2021: Camera-ready version due

Submissions

Submissions are required to follow Springer’s LNCS format. The page limit depends on the paper’s category (see below). In each category, additional material beyond the page limit may be placed in a clearly marked appendix, to be read at the discretion of the reviewers and to be omitted in the final version. Formatting style files and further guidelines for formatting can be found at the Springer website. Submission is via EasyChair.

Submissions will undergo a single-blind review process. Accepted papers will be published in Springer’s Lecture Notes in Computer Science series. There will be three categories of papers: regular papers, tool papers and case studies. Papers in each category have a different page limit and will be evaluated differently.

Regular papers clearly identify and justify an advance to the field of verification, abstract interpretation, or model checking. Where applicable, they are supported by experimental validation. Regular papers are restricted to 20 pages in LNCS format, not counting references.

Tool papers present a new tool, a new tool component, or novel extensions to an existing tool. They should provide a short description of the theoretical foundations with relevant citations, and emphasize the design and implementation concerns, including software architecture and core data structures. A regular tool paper should give a clear account of the tool’s functionality, discuss the tool’s practical capabilities with reference to the type and size of problems it can handle, describe experience with realistic case studies, and where applicable, provide a rigorous experimental evaluation. Papers that present extensions to existing tools should clearly focus on the improvements or extensions with respect to previously published versions of the tool, preferably substantiated by data on enhancements in terms of resources and capabilities. Authors are strongly encouraged to make their tools publicly available and submit an artifact. Tool papers are restricted to 12 pages in LNCS format, not counting references.

Case studies are expected to describe the use of verification, model checking, and abstract interpretation techniques in new application domains or industrial settings. Papers in this category do not necessarily need to present original research results but are expected to contain novel applications of formal methods techniques as well as an evaluation of these techniques in the chosen application domain. Such papers are encouraged to discuss the unique challenges of transferring research ideas to a real-world setting and reflect on any lessons learned from this technology transfer experience. Case study papers are restricted to 20 pages in LNCS format, not counting references. (Shorter case study papers are also welcome.)

Call for Artifacts

VMCAI 2022 makes available the option to submit an artifact along with a paper. Artifacts are any additional material that substantiates the claims made in the paper, and ideally makes them fully replicable. For some papers, these artifacts are as important as the paper itself because they provide crucial evidence for the quality of the results. The goal of artifact evaluation is twofold. On the one hand, we want to encourage authors to provide more substantial evidence to their papers and to reward authors who create artifacts. On the other hand, we want to simplify the independent replication of results presented in the paper and to ease future comparison with existing approaches. Artifacts of interest include (but are not limited to):

  • Software, Tools, or Frameworks
  • Data sets
  • Test suites
  • Machine checkable proofs
  • Any combination of them
  • Any other artifact described in the paper

Artifact submission is optional. However, we highly encourage all authors to also submit an artifact. A successfully evaluated artifact can increase your chance of being accepted since the evaluation result of your artifact is taken into account during paper reviewing. Additionally, badges shown on the title page of the corresponding paper give you credit for good artifact submissions. We award one of three types of badges. For artifacts that are successfully evaluated by the artifact evaluation committee we grant the available badge. Artifacts that are publically available under a DOI receive an availability badge. Authors may use all granted badges on the title page of the respective paper.

Important Dates

The artifact evaluation will be done in parallel with the evaluation of the submitted paper. The artifacts submission deadline is 1 week after the paper submission.

What When
Artifact submission opens 4th Sept 2021 11th Sept 2021
Artifact submission 9th Sept 2021 16th Sept 2021
Artifact test phase notification 23rd Sept 2021
Artifact clarification period 24th-28th Sept 2021
Artifact notification 17th Oct 2021

All artifacts are evaluated by the artifact evaluation committee. Each artifact will be reviewed by at least two committee members. Reviewers will read the paper and explore the artifact to evaluate how well the artifact supports the claims and results of the paper. The evaluation is based on the following questions.

  • Is the artifact consistent with the paper and the claims made by the paper?
  • Are the results of the paper replicable through the artifact?
  • Is the artifact complete, i.e., how many of the results of the paper are replicable?
  • Is the artifact well-documented?
  • Is the artifact easy to use?

The artifact evaluation is performed in the following two phases.

  • In the test phase, reviewers check if the artifact is functional, i.e., they look for setup problems (e.g., corrupted, missing files, crashes on simple examples, etc.). If any problems are detected, the authors are informed of the outcome and asked for clarification. The authors will get 3 days to respond to the reviews in case problems are encountered.
  • In the assessment phase, reviewers will try to reproduce any experiments or activities and evaluate the artifact w.r.t the questions detailed above.

Artifacts Submission

An artifact submission should consist of

  • an abstract that summarizes the artifact and explains its relation to the paper including:
  • a URL from which a .zip or .tar.gz archive file containing the artifact can be downloaded - we encourage you to provide a DOI
  • the SHA256 checksum of the archive file
  • a .pdf file of the submitted paper contained within the archive file.

The artifact evaluation chairs will download the archive file and distribute it to the reviewers. Please also look at the Artifact Packaging Guidelines section for detailed information about the contents of the submission. The abstract (as a txt or pdf) should be submitted to submitted to EasyChair. The abstract should include a description of the artifact, the URL of the download link (you should upload your vm to a hosting service of your choice - easychair will not accept vm uploads), as well as the SHA256 checksum of your archive file.

https://easychair.org/my/conference?conf=vmcai2022ae#

We need the checksum to ensure the integrity of your artifact. You can generate the checksum using the following command-line tools.

  • Linux: sha256sum <file>
  • Windows: CertUtil -hashfile <file> SHA256
  • MacOS: shasum -a 256 <file>

If you cannot submit the artifact as requested or encounter any other difficulties in the submission process, please contact the artifact evaluation chairs prior to submission.

Artifact Packaging Guidelines

UPDATED 9/1/2021

There are two acceptable ways to submit your artifact. You may either package the artifact as an archive file and write their instructions such that the artifact evaluation committee can evaluate the artifact within a virtual machine provided by us. In this case, only submit the required files to replicate your results in the provided virtual machine. If you submit in this way, you would not submit a virtual machine image in the archive file. AEC members will copy your archive file into the provided virtual machine.

The second option is to modify the given VM and reupload the VM to a hosting platform of your choice. We will check the hash of the image, then load the VM to test your artifact. In this case, a README should be contained in the home directory of the VM.

We recommend preparing your artifact in such a way that any computer science expert without dedicated expertise in your field can use your artifact, especially to replicate your results. For example, provide easy-to-use scripts and a detailed README document.

VMCAI 2022 Virtual Machine

An initial version of the virtual machine is available here.The user name and password are vmcai. If you have any questions regarding the VM or in case you think the VM is improper for evaluation of your artifact, please contact the artifact evaluation chair.

Submission Contents

Your virtual machine must contain the following elements.

  1. The main artifact, i.e., data, software, libraries, scripts, etc. required to replicate the results of your paper. ◦ The review will be singly blind. Please make sure that you do not (accidentally) learn the identify of the reviewers (e.g., through analytics, logging).
  2. A license file. Your license needs to allow the artifact evaluation chairs to download and distribute the artifact to the artifact evaluation committee members and the artifact evaluation committee members must be allowed to evaluate the artifact, e.g., use, execute, and modify the artifact for the purpose of artifact evaluation.
  3. A README text file that introduces the artifact to the user and guides the user through replication of your results. Ideally, it should describe the structure and content of your artifact. It should also describe the steps to set up your artifact within the VM. To simplify the reviewing process, we recommend providing an installation script (if necessary). We would appreciate it if you would support the reviewers not only for the main review phase but also for the testing phase. To this end, it would be helpful if you would provide instructions that allow installation and rudimentary testing (i.e., in such a way that technical difficulties would pop up) in as little time as possible.

Document in detail how to replicate your results of the paper:

  • Please document which claims or results of the paper can be replicated with the artifact and how (e.g., which experiment must be performed). Please also explain which claims and results cannot be replicated and why.
  • Describe in detail how to replicate the results in the paper, especially describe the steps that need to be performed to replicate the results in the paper. To simplify the reviewing process, we recommend providing evaluation scripts (where applicable).
  • Precisely state the resource requirements (RAM, number of cores, CPU frequency, etc.), which you used to test your artifact. In most cases, your resource requirements should be modest and allow replication of results even on laptops. If your tool demands a more specialized resource requirement than would be appropriate for a laptop, make a note of this in your README.
  • Please provide for each task/step of the replication (an estimate) how long it will take to perform it or how long it took for you and what exact machine(s) you used.
  • For tasks that require a large amount of resources (hardware or time), we recommend to provide a possibility to replicate a subset of the results with reasonably modest resource and time limits, e.g., within 8 hours on a reasonable personal computer. In this case, please also include a script to replicate only a subset of the results. If this is not possible, please contact the artifact evaluation chairs early, but no later than before submission.

Publication of Artifacts

The artifact evaluation committee uses the submitted artifact only for the artifact evaluation. It may not publicize the artifact or any parts of it during or after completing evaluation. Artifacts and all associated data will be deleted at the end of the evaluation process. We encourage the authors of artifacts to make their artifacts also permanently available, e.g., on Zenodo or figshare, and refer to them in their papers via a DOI. All artifacts for which a DOI exists that is known to the artifact evaluation committee are granted the availability badge.

Accepted Papers

Title
A Flow-Insensitive-Complete Program RepresentationRemote
VMCAI
Automata-Driven Partial Order Reduction and Guided Search for LTL Model CheckingRemote
VMCAI
Bisimulations for Neural Network ReductionInPerson
VMCAI
Bit-Precise Reasoning via Int-BlastingRemote
VMCAI
EPMC Gets Knowledge in Multi-Agent SystemsRemote
VMCAI
Fanoos: Multi-Resolution, Multi-Strength, Interactive Explanations for Learned SystemsRemote
VMCAI
Fast Three-Valued Abstract Bit-Vector ArithmeticInPerson
VMCAI
Generalized Arrays for Stainless FramesRemote
VMCAI
Gradient-Descent for Randomized Controllers under Partial ObservabilityInPerson
VMCAI
High Assurance Software for Financial Regulation and Business PlatformsRemote
VMCAI
Lightweight Shape Analysis based on Physical TypesInPerson
VMCAI
Loop Verification with Invariants and ContractsRemote
VMCAI
Pre-print
Making PROGRESS in Property Directed ReachabilityRemote
VMCAI
Mixed Semantics Guided Layered Bounded Reachability Analysis of Compositional Linear Hybrid AutomataRemote
VMCAI
NP Satisfiability for Arrays as PowersInPerson
VMCAI
Out of Control: Reducing Probabilistic Models by Control-State EliminationInPerson
VMCAI
Relational String Abstract DomainsRemote
VMCAI
Satisfiability and Synthesis Modulo OraclesRemote
VMCAI
Scaling Up Livelock Verification for Network-on-Chip Routing AlgorithmsInPerson
VMCAI
STAMINA 2.0: Improving Scalability of Infinite-StateStochastic Model CheckingRemote
VMCAI
Stateful Dynamic Partial Order Reduction for Model Checking Event-Driven Applications that Do Not TerminateRemote
VMCAI
Link to publication DOI Pre-print Media Attached File Attached
Verifying Pufferfish Privacy in Hidden Markov ModelsRemote
VMCAI
Verifying Solidity Smart Contracts Via Communication Abstraction in SmartACERemote
VMCAI

We understand that due to travel restrictions and personal health considerations related to COVID’19, you may not be able to attend VMCAI 2022 in person. All events that will take place during the POPL-week, including VMCAI 2022, can therefore also be attended virtually.

Remote participation will be handled via the Airmeet platform. All registered conference attendees, including in-person attendees, will receive their login information for Airmeet prior to the start of the POPL-week. For VMCAI, both in-person and virtual talks will be presented in joint sessions. We do not plan any virtual-only events at this point.

If you can attend the conference in person, we encourage you to do so. We believe that virtual conferences do not provide the same experience as traditional in-person conferences. After almost two years of exclusively virtual conferences, many students and younger colleagues are desperate for the opportunity to meet their peers in person and extend their networks. So please keep this in mind when you decide how you will attend. At least one of the program chairs will attend in person to welcome you at the conference.

If you register for in-person attendance, you can still switch to virtual attendance at any later point before the start of the POPL-week. The difference in the registration fees between the two options will be reimbursed.

Registration for VMCAI 2022 is through POPL’s registration web page. To attend in person, choose the “in-person POPL” option from the main registration page, which later will prompt you to select the specific meetings you want to attend, including VMCAI 2022. To participate remotely, choose the “Virtual POPL” option which is common to all POPL-week events. Note that in both cases, you will automatically get all the benefits of the “Virtual POPL” option, namely, remote access to all POPL-week events as well as the POPL Virtual Workshop. If you are already registered, and wish to either update your information or switch between the in-person and virtual options, use the “Update Information” option.

Early registration closes on January 3rd.

VMCAI 2022 has some funds from the National Science Foundation t to provide travel grants of up to $1,000 (USD) for student attendees of VMCAI 2022 that are studying at a US university.

The application deadline is December 24, 2021, and recipients will be notified by December 27.

Funds will be provided after the conference, upon submission of the receipt for expenses and a short report detailing the student’s experience at and benefit from VMCAI 2022 (these reports will be used to compile a final report to our sponsors).

Special efforts will be made to bring to VMCAI students from under-represented groups. Applications from first-year PhD students and undergraduate students interested in verification, model checking, and abstract interpretation are particularly encouraged.

Applications must be received by the deadline. Applicants are required to apply using the following web form:

https://forms.gle/wCViJGtVJJKkJKPX8

If you have questions, please use the contact form.

The proceedings can be found here: VMCAI 2022 on Springer

Free access will expire on February 15, 2022.

Questions? Use the VMCAI contact form.