CPP 2027

Certified Programs and Proofs (CPP) is an international conference on practical and theoretical topics in all areas that consider formal verification and certification as an essential paradigm for their work. CPP spans areas of computer science, mathematics, logic, and education. CPP is sponsored by ACM SIGPLAN, in cooperation with ACM SIGLOG.

CPP 2027 will be held in January 2027 and will be co-located with POPL 2027 in Mexico City, Mexico.

Call for Papers

Certified Programs and Proofs (CPP) is an international conference on practical and theoretical topics in all areas that consider formal verification and certification as an essential paradigm for their work. CPP spans areas of computer science, mathematics, logic, and education.

CPP 2027 (https://popl27.sigplan.org/home/CPP-2027) will be held on 11-12 January 2027 and will be co-located with POPL 2027 in Mexico City, Mexico. CPP 2027 is sponsored by ACM SIGPLAN, in cooperation with ACM SIGLOG.

CPP 2027 will welcome contributions from all members of the community. CPP 2027 is primarily an in-person event, and at least one author of every accepted paper is expected to attend in person. We aim to support remote participation, with talks recorded and streamed online depending on AV support from the POPL 2027 organizers.

IMPORTANT DATES

• Abstract submissions: Sep 3, 2026
• Paper submissions: Sep 10, 2026
• First round of reviews due: Oct 10, 2026
• Second round of reviews due: Nov 3, 2026
• Author notifications: Nov 10, 2026
• Camera-ready deadline: Nov 25, 2026

Deadlines expire at the end of the day, anywhere on earth. Abstract and submission deadlines are strict and there will be no extensions.

AUTHORS TAKE NOTE

The official publication date is the date the proceedings are made available in the ACM Digital Library. This date may be up to two weeks prior to the first day of your conference. The official publication date affects the deadline for any patent filings related to published work. DISTINGUISHED PAPER AWARDS Around 10% of the accepted papers at CPP 2027 will be designated as Distinguished Papers. This award highlights papers that the CPP program committee thinks should be read by a broad audience due to their relevance, originality, significance and clarity.

TOPICS OF INTEREST

We welcome submissions in research areas related to formal certification of programs and proofs. The following is a non-exhaustive list of topics of interest to CPP:

• certified or certifying programming, compilation, linking, OS kernels, runtime systems, security monitors, and hardware;
• certified mathematical libraries and mathematical theorems;
• proof assistants (e.g, ACL2, Agda, Dafny, F*, HOL4, HOL Light, Idris, Isabelle, Lean, Mizar, Nuprl, PVS, Rocq, etc);
• new languages and tools for certified programming;
• program analysis, program verification, and program synthesis;
• program logics, type systems, and semantics for certified code;
• logics for certifying concurrent and distributed systems;
• mechanized metatheory, formalized programming language semantics, and logical frameworks;
• higher-order logics, dependent type theory, proof theory, logical systems, separation logics, and logics for security;
• verification of correctness and security properties;
• certificates for decision procedures, including linear algebra, polynomial systems, SAT, SMT, and unification in algebras of interest;
• certificates for semi-decision procedures, including equality, first-order logic, and higher-order unification;
• certificates for program termination;
• formal models of computation;
• mechanized (un)decidability and computational complexity proofs;
• formally certified methods for induction and coinduction;
• integration of interactive and automated provers;
• logical foundations of proof assistants;
• applications of AI and machine learning to formal verification;
• user interfaces for proof assistants and theorem provers;
• teaching mathematics and computer science with proof assistants.

Submissions will be reviewed based on the following criteria:

• Thoroughly discuss the theory or design choices underpinning the formalization.
• Provide a detailed explanation of the formalization decisions, including alternative approaches and reasons for rejecting them.
• Examine related literature on formalization choices and techniques.
• Compare the design choices to those made in other libraries.
• Offer feedback on the features of the computer proof assistant used, noting any that are missing.
• Draw conclusions that can guide future formalization efforts in the same or other proof assistants.

SUBMISSION GUIDELINES

Prior to the paper submission deadline, the authors should upload their anonymized paper in PDF format through the HotCRP system at

https://cpp2027.hotcrp.com

The submissions must be written in English and provide sufficient detail to allow the program committee to assess the merits of the contribution. They must be formatted following the ACM SIGPLAN Proceedings format using the acmart style with the sigplan option, which provides a two-column style, using 10 point font for the main text, and a header for double blind review submission, i.e.,

\documentclass[sigplan,10pt,anonymous,review]{acmart}\settopmatter{printfolios=true,printccs=false,printacmref=false}

The submitted papers should not exceed 12 pages, including tables and figures, but excluding bibliography and clearly marked appendices. The papers should be self-contained without the appendices. Shorter papers are welcome and will be given equal consideration. Submissions not conforming to the requirements concerning format and maximum length may be rejected without further consideration.

CPP 2027 will employ a lightweight double-blind reviewing process following the process from previous years. To facilitate this, the submissions must adhere to two rules:

1. author names and institutions must be omitted, and
2. references to authors’ own related work should be in the third person (e.g., not “We build on our previous work …” but rather “We build on the work of …”).

The purpose of this process is to help the PC and external reviewers come to an initial judgment about the paper without bias, not to make it impossible for them to discover the authors if they were to try. Nothing should be done in the name of anonymity that weakens the submission or makes the job of reviewing it more difficult. In particular, important background references should not be omitted or anonymized. In addition, authors are free to disseminate their ideas or draft versions of their papers as usual. For example, authors may post drafts of their papers on the web or give talks on their research ideas. Note that POPL 2027 itself will employ full double-blind reviewing, which differs from the light-weight CPP process. This FAQ from previous SIGPLAN conference addresses many common concerns:

https://popl20.sigplan.org/track/POPL-2020-Research-Papers#Submission-and-Reviewing-FAQ

SUPPLEMENTARY MATERIAL

We strongly encourage the authors to provide any supplementary material that supports the claims made in the paper, such as proof scripts or experimental data. This material must be uploaded at submission time, as an archive, not via a URL. Two forms of supplementary material may be submitted:

1. Anonymous supplementary material is made available to the reviewers before they submit their first-draft reviews.
2. Non-anonymous supplementary material is made available to the reviewers after they have submitted their first-draft reviews and have learned the identity of the authors.

Please use anonymous supplementary material whenever possible, so that it can be taken into account from the beginning of the reviewing process. In order to facilitate reviewing, we encourage authors to hyperlink paper statements to their counterpart in the supplementary material.

AUTHORSHIP POLICY

The submitted papers must adhere to the ACM Policy on Authorship (https://www.acm.org/publications/policies/new-acm-policy-on-authorship, which includes a section on the “Use of Artificial Intelligence”) and on Plagiarism (https://www.acm.org/publications/policies/plagiarism) and to the SIGPLAN Republication Policy(https://www.sigplan.org/Resources/Policies/Republication/) and. Concurrent submissions to other conferences, journals, workshops with proceedings, or similar forums of publication are not allowed. The PC chairs should be informed of closely related work submitted to a conference or journal in advance of submission. One author of each accepted paper is expected to present it at the conference.

AI POLICY

CPP will follow the ACM policy on the use of AI in preparing papers, that we invite authors to read carefully https://www.acm.org/publications/policies/frequently-asked-questions Notably, authors can use AI tools in preparing their papers, with the conditions: - That these systems do not plagiarize, misrepresent, or falsify content in ACM submissions. - That the resulting work in its totality is an accurate representation of the authors’ underlying work and novel intellectual contributions and is not primarily the result of the tool’s generative capabilities. - That the authors accept responsibility for the veracity and correctness of all material in their Work, including any computer-generated material.

Especially with the rapid growth in AI-assisted proofs and autoformalization, we expect that you, like us, are concerned about the volume and quality of papers submitted to CPP. We thus ask authors to strictly respect the above mentioned policies, as the PC is entitled to desk reject papers that fail them.

ANTICIPATING REVIEWING LOAD

CPP usually guarantees that all papers get three reviews. However, with the rapid growth in conference submissions, in the event that we receive submissions far exceeding last year’s record number, we may need to weaken this guarantee. In particular, as has been the case at other recent SIGPLAN conferences, we may resort to the early rejection of papers with two negative reviews.

PUBLICATION, COPYRIGHT AND OPEN ACCESS

The official CPP 2027 proceedings will also be available via SIGPLAN OpenTOC (http://www.sigplan.org/OpenTOC/#cpp ).

See the ACM Copyright Policy (http://www.acm.org/publications/policies/copyright-policy) and Author Rights (http://authors.acm.org/main.html).

ORGANIZERS

• Sophie Tourret, Inria (conference co-chair)
• Yannick Zakowski, Inria (conference co-chair)
• Cyril Cohen, Inria (PC co-chair)
• Nikhil Swamy, Microsoft Research (PC co-chair)

PROGRAM COMMITTEE

• Aart Middeldorp (University of Innsbruck)
• Abhishek Singh (IIIT Hyderabad)
• Anders Mörtberg (Stockholm University)
• Andrej Bauer (University of Ljubljana)
• Anne Baanen (Mathlib Initiative)
• Ariel Kellison (Code Metal)
• Assia Mahboubi (Inria, VU Amsterdam)
• Chantal Keller (Université Paris-Saclay)
• Chelsea Edmonds (University of Western Australia)
• Christine Rizkallah (University of Melbourne)
• Cyril Cohen (Inria) (Co-chair)
• Denis Firsov (Tallinn University of Technology)
• Derek Dreyer (MPI-SWS)
• Dmitriy Traytel (University of Copenhagen)
• Dominik Kirst (Inria)
• Holger Thies (Kyoto University)
• Ian Shillito (University of Melbourne)
• Jannis Limperg (Axiom Math)
• Jonas Kastberg Hinrichsen (Aalborg University)
• Julie Cailler (University of Lorraine, CNRS, Inria, LORIA)
• Julien Narboux (Université Paris Cité)
• Kathrin Stark (Heriot-Watt University)
• Kaustuv Chaudhuri (Inria Saclay, École Polytechnique)
• Kenji Maillard (Inria, University of Nantes)
• Lawrence C. Paulson (University of Cambridge)
• María Inés de Frutos-Fernández (University of Bonn)
• Martin Bodin (Inria)
• Matthieu Sozeau (Inria)
• Mauricio Ayala-Rincón (University of Brasília, Federal University of Goiás)
• Nada Amin (Harvard University)
• Nikhil Swamy (Microsoft Research) (Co-chair)
• Patricia Johann (Appalachian State University)
• Qinxiang Cao (Shanghai Jiao Tong University)
• René Thiemann (University of Innsbruck)
• Reynald Affeldt (AIST)
• Sébastien Gouëzel (Université de Rennes)
• Simon Oddershede Gregersen (CISPA Helmholtz Center for Information Security)
• Sophie Morel (CNRS)
• Stéphane Graham-Lengrand (SRI)
• Tobias Nipkow (TU Munich)
• Viktor Vafeiadis (MPI-SWS)
• Xavier Allamigeon (Inria, École polytechnique)
• Yann Herklotz (EPFL)
• Yannick Forster (Inria)
• Yao Li (Portland State)
• Yonghyun Kim (MPI-SP)

CONTACT

For any questions please contact the two PC chairs:

• Cyril Cohen cyril.cohen@inria.fr
• Nikhil Swamy nswamy@microsoft.com

The ACM SIGPLAN International Conference on Certified Programs and Proofs (CPP) covers all areas that consider formal verification and certification as an essential paradigm for their work. CPP spans areas of computer science, mathematics, logic, and education and brings together 100+ researchers and practitioners to present the latest developments in formal verification.

CPP welcomes corporate donations to help maintain and improve the overall experience at the conference. The money we get from corporate sponsors will generally be used to subsidize student attendance (e.g., registration waiving, which generally increases student participation), to pay for live streaming and recording CPP, and facilitate online interaction.

CPP Support Levels

Bronze – Suggested donation $1000

• Company name and logo prominently displayed on the CPP website
• Acknowledgment in the CPP PC chairs’ statement for the proceedings
• Acknowledgment in the CPP chairs’ report talk
• In case of an online/hybrid conference: video room for interacting with conference participants during breaks
• In case of a physical conference: opportunity to display information material on a shared table near the registration desk or the conference room

Silver – Suggested donation $2500

Bronze benefits plus:

• Acknowledgment as a sponsor of one invited talk
• In case of a physical conference: dedicated table space for interacting with participants for one day of CPP
• One complimentary registration to CPP

Gold – Suggested donation $5000

Silver benefits plus:

• Acknowledgment as a sponsor of all invited talks
• In case of a physical conference: dedicated table space for interacting with participants for all days of CPP
• One additional complimentary registrations to CPP (2 total)

Diamond (first come first serve, single sponsor) – Suggested donation $10000

Gold benefits plus:

• Sponsor of the CPP dinner (in case of a physical conference)
• An opportunity for a representative from the company to address the attendees for 5 minutes, immediately before or after the chairs’ report (virtual conference) or at the conference dinner (physical conference)
• Potential to accommodate alternative arrangements, in coordination with POPL and subject to ACM guidelines
• One additional complimentary registration to CPP (3 total)

Carbon offset (first come first serve, single sponsor) – Suggested donation $10000

Gold benefits plus:

• A special thanks in the CPP PC chairs’ statement for the proceedings and CPP chairs’ report talk for helping minimize the climate impact of CPP
• Funds in excess of the gold level will be used to purchase carbon offsets

Sponsorship Policy

Sponsors help offset the considerable expense involved in staging the conference, reducing the financial barriers to participation and enhancing inclusivity. We aim to foster a diverse community with participants from varied disciplines, organizations, and geographic locations. We value and encourage participation from across academia, industry, government, and civil society. At the same time, outside contributions can raise concerns about the independence of the conference and the legitimacy the conference may confer on sponsors. We take these concerns seriously and have taken steps to maintain a transparent and appropriate relationship with our sponsors:

• We acknowledge all sources of financial support.
• We disclose all benefits that sponsors receive in exchange for their contribution.
• We ensure that sponsors have no say over the paper selection process, the composition of the program committees, the choice of invited speakers, or the selection of award winners. The substance and structure of the conference are determined independently by the program committee using a rigorous, lightweight double-blind peer review process.
• We only allow sponsors to contribute to a general fund and do not allow sponsors to further specify how their contributions should be spent.
• We are grateful to receive financial support from organizations that respect our twin goals of inclusivity and independence.

Acknowledgment: CPP’s sponsorship policy is adapted from the ACM FAccT conference and used under a CC-BY 2.0 license.

Contact

Questions about how to support CPP may be directed to the conference chairs Yannick Zakowski and Sophie Tourret.

Information about the CPP series at https://www.sigplan.org/Conferences/CPP/