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 2026 (https://popl26.sigplan.org/home/CPP-2026) will be held on 12-13
January 2026 and will be co-located with POPL 2026 in Rennes, France. CPP 2026
is sponsored by ACM SIGPLAN, in cooperation with ACM SIGLOG.
CPP 2026 will welcome contributions from all members of the community. The CPP
2026 organizers will strive to enable both in-person and remote participation,
in cooperation with the POPL 2026 organizers.
NEWS: CPP IS NOW 100% GOLD OPEN ACCESS
<https://popl26.sigplan.org/home/CPP-2026#news-cpp-is-now-100-gold-open-access>
Starting in 2026 all articles published at CPP will be Gold Open Access.
Authors should check the Open Access section below for more details on what to
expect.
IMPORTANT DATES <https://popl26.sigplan.org/home/CPP-2026#important-dates>
Abstract Submission Deadline: 5 September 2025
Paper Submission Deadline: 12 September 2025
Notification (tentative): 13 November 2025
Camera Ready Deadline (tentative): 1 December 2025
Conference: 12-13 January 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: <https://popl26.sigplan.org/home/CPP-2026#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
<https://popl26.sigplan.org/home/CPP-2026#distinguished-paper-awards>
Around 10% of the accepted papers at CPP 2026 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 <https://popl26.sigplan.org/home/CPP-2026#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 (e.g., in other proof assistants) 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
<https://popl26.sigplan.org/home/CPP-2026#submission-guidelines>
Prior to the paper submission deadline, the authors should upload their
anonymized paper in PDF format through the HotCRP system at
https://cpp2026.hotcrp.com <https://cpp2026.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 2026 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 2026 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
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.
The submitted papers must adhere to the SIGPLAN Republication Policy
(https://www.sigplan.org/Resources/Policies/Republication/) and the ACM Policy
on Plagiarism (https://www.acm.org/publications/policies/plagiarism).
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 (possibly virtual) conference.
OPEN ACCESS <https://popl26.sigplan.org/home/CPP-2026#open-access>
The CPP proceedings are published by ACM, and starting in 2026 all articles
published by ACM will be Gold Open Access
(https://www.acm.org/articles/pubs-newsletter/2025/blue-diamond-january-2024#COMMITMENT),
so the authors retain copyright and license the work under a Creative Commons
license (we recommend CC-BY). Here is what the authors of accepted papers can
expect:
If any of the authors is affiliated with an institution participating in ACM
OPEN (https://libraries.acm.org/acmopen/open-participants), we recommend
selecting that author as a “corresponding author”, so that you don’t have to
pay an article processing charge (APC). The choice of “corresponding author”
(in HotCRP and when submitting the camera-ready version) only impacts whether
or not you have to pay an APC, and does not appear on your paper or in the
Digital Library. Please use the institutional email address for the
“corresponding author” to make it easier for ACM OPEN to kick in automatically.
If none of the authors is covered by ACM OPEN, the ACM will charge you an APC,
which you have to pay directly with the ACM. For 2026 ACM offers a temporarily
reduced APC
(https://www.acm.org/publications/open-access-model-for-acm-and-sig-sponsored-conferences-frequently-asked-questions)
of $250 when at least one author has an ACM or SIGPLAN membership, and $350
otherwise (which is still much better than their usual $700 and $1000). On top
of this ACM is offering several automated APC Waivers and Discounts
(https://www.acm.org/publications/policies/policy-on-open-access-apc-waivers-and-discounts)
for authors from developing countries.
For timely dissemination of CPP papers we also recommend uploading a preprint
online (e.g., on arXiv) and linking it from the paper’s page on the CPP
website, since the publishing schedule is very tight for CPP and we cannot
guarantee that the proceedings will be ready on time for the conference. The
official CPP proceedings from previous years are also available via SIGPLAN
OpenTOC (http://www.sigplan.org/OpenTOC/#cpp).
ORGANIZERS <https://popl26.sigplan.org/home/CPP-2026#organizers>
Kathrin Stark, Heriot-Watt University (conference co-chair)
Yannick Zakowski, ENS Lyon (conference co-chair)
Nikhil Swamy, Microsoft Research (PC co-chair)
Nicolas Tabareau, Inria (PC co-chair)
CONTACT <https://popl26.sigplan.org/home/CPP-2026#contact>
For any questions please contact the two PC chairs:
Nikhil Swamy nsw...@microsoft.com <mailto:nsw...@microsoft.com>
Nicolas Tabareau nicolas.tabar...@inria.fr <mailto:nicolas.tabar...@inria.fr>_______________________________________________
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