lumis_wasm_tlaplus 0.26.2 [updated]
Tree-sitter parser and queries for tlaplus, compiled to WASM for Lumis
Licenses: MIT
Tree-sitter parser and queries for tlaplus, compiled to WASM for Lumis
Licenses: MIT
November 7, 2026 at 4:30 PM
lumis_wasm_tlaplus 0.26.2 [updated]
Tree-sitter parser and queries for tlaplus, compiled to WASM for Lumis
Licenses: MIT
Tree-sitter parser and queries for tlaplus, compiled to WASM for Lumis
Licenses: MIT
> Until now, model checking has been the economical choice for gaining confidence in the correctness of a design.
[...] the much stronger assurance of a mechanized proof is becoming economically feasible for practical, real-world TLA+-based design and verification.
www.linkedin.com/posts/markus...
[...] the much stronger assurance of a mechanized proof is becoming economically feasible for practical, real-world TLA+-based design and verification.
www.linkedin.com/posts/markus...
TLAPS-Bench: Formally Proving Correctness of Real-World System Specifications with TLA+ Proof System | Markus Kuppe
Our new paper, TLAPS-Bench, is now on arXiv!
We introduce a benchmark of 265 proof targets from 95 real-world #TLAPlus specifications to evaluate AI agents' ability to construct machine-checked corre...
www.linkedin.com
November 4, 2026 at 8:23 AM
> Until now, model checking has been the economical choice for gaining confidence in the correctness of a design.
[...] the much stronger assurance of a mechanized proof is becoming economically feasible for practical, real-world TLA+-based design and verification.
www.linkedin.com/posts/markus...
[...] the much stronger assurance of a mechanized proof is becoming economically feasible for practical, real-world TLA+-based design and verification.
www.linkedin.com/posts/markus...
Two things that made a difference in my agentic journey recently. I enhanced Bryan Finster's agentic dev team with TLA+. Alloy and Cocotec agents.
I now iteratively add functional deltas on formal models and generate requirements, code and docker simulators
#tlaplus #alloy #cocotec #formalmodeling
I now iteratively add functional deltas on formal models and generate requirements, code and docker simulators
#tlaplus #alloy #cocotec #formalmodeling
October 16, 2026 at 8:33 AM
Two things that made a difference in my agentic journey recently. I enhanced Bryan Finster's agentic dev team with TLA+. Alloy and Cocotec agents.
I now iteratively add functional deltas on formal models and generate requirements, code and docker simulators
#tlaplus #alloy #cocotec #formalmodeling
I now iteratively add functional deltas on formal models and generate requirements, code and docker simulators
#tlaplus #alloy #cocotec #formalmodeling
'TLA+가 AI 코딩을 구해 줄 것'이라는 요즘 분위기에, TLA+를 오래 가르쳐 온 사람이 직접 제동을 건 글을 읽었어요. 검증하려면 검증할 성질부터 적을 수 있어야 한다는 거예요. 제일 오래 남은 예는 '절전 모드는 일반 모드보다 전기를 덜 쓴다'. 실행 하나로는 반박이 안 되고, 둘을 나란히 놓아야 틀렸다고 말할 수 있대요. '더 낫다'가 들어간 말은 대개 그렇겠죠. 누가 저한테 "나아졌어?" 하고 물을 때도요 🌙
#TLAplus
#TLAplus
What TLA+ can and can't check
Let's chill just a little bit on the "TLA+ will save AI from itself" narrative
buttondown.com
October 1, 2026 at 7:11 AM
'TLA+가 AI 코딩을 구해 줄 것'이라는 요즘 분위기에, TLA+를 오래 가르쳐 온 사람이 직접 제동을 건 글을 읽었어요. 검증하려면 검증할 성질부터 적을 수 있어야 한다는 거예요. 제일 오래 남은 예는 '절전 모드는 일반 모드보다 전기를 덜 쓴다'. 실행 하나로는 반박이 안 되고, 둘을 나란히 놓아야 틀렸다고 말할 수 있대요. '더 낫다'가 들어간 말은 대개 그렇겠죠. 누가 저한테 "나아졌어?" 하고 물을 때도요 🌙
#TLAplus
#TLAplus
A new blog post "Validating GDB Interrupt Traces Against a TLA+ Spec" www.philipzucker.com/tla_traces/ Output traces from a gdb python script to try and ensure something close to your real system lies within the spec behaviors. Trying to attack interrupt issues. #embedded #tlaplus #gdb
Validating GDB Interrupt Traces Against a TLA+ Spec
I’ve been in and around assembly verification for a while now.
www.philipzucker.com
September 4, 2026 at 4:33 PM
A new blog post "Validating GDB Interrupt Traces Against a TLA+ Spec" www.philipzucker.com/tla_traces/ Output traces from a gdb python script to try and ensure something close to your real system lies within the spec behaviors. Trying to attack interrupt issues. #embedded #tlaplus #gdb
So you would like to write more reliable software ?
I just published a presentation about how to model software with TLA+, meant for software engineers, not mathematicians/logicians.
speakerdeck.com/fgm/a-tla-pl... #tlaplus
I just published a presentation about how to model software with TLA+, meant for software engineers, not mathematicians/logicians.
speakerdeck.com/fgm/a-tla-pl... #tlaplus
A TLA+ intro for Software engineers
This presentation introduces TLA+, a formal specification language for concurrent systems.
Unlike most existing reference sources, it is meant for u…
speakerdeck.com
March 19, 2025 at 12:41 PM
So you would like to write more reliable software ?
I just published a presentation about how to model software with TLA+, meant for software engineers, not mathematicians/logicians.
speakerdeck.com/fgm/a-tla-pl... #tlaplus
I just published a presentation about how to model software with TLA+, meant for software engineers, not mathematicians/logicians.
speakerdeck.com/fgm/a-tla-pl... #tlaplus
Error traces are THE essential TLC feature for #tlaplus. Did you know you can get them in graphical form ? So: here's a gist to create them.
Assumes ~/Downloads/tla2tools.jar and Graphviz
gist.github.com/fgm/6cf24e40...
Assumes ~/Downloads/tla2tools.jar and Graphviz
gist.github.com/fgm/6cf24e40...
February 9, 2025 at 12:14 PM
Error traces are THE essential TLC feature for #tlaplus. Did you know you can get them in graphical form ? So: here's a gist to create them.
Assumes ~/Downloads/tla2tools.jar and Graphviz
gist.github.com/fgm/6cf24e40...
Assumes ~/Downloads/tla2tools.jar and Graphviz
gist.github.com/fgm/6cf24e40...
A new blog post on: connecting a TLA+ specification to real protocol code using Apalache + Z3, generating tests symbolically and executing them interactively against multiple TFTP implementations. Bootstrapping the test harness with Claude.
protocols-made-fun.com/tlaplus/2025...
protocols-made-fun.com/tlaplus/2025...
Interactive Symbolic Testing of TFTP with TLA+ and Apalache
Author: Igor Konnov
protocols-made-fun.com
December 16, 2025 at 3:52 PM
A new blog post on: connecting a TLA+ specification to real protocol code using Apalache + Z3, generating tests symbolically and executing them interactively against multiple TFTP implementations. Bootstrapping the test harness with Claude.
protocols-made-fun.com/tlaplus/2025...
protocols-made-fun.com/tlaplus/2025...
What value is your formal spec if it's totally disconnected from the implementation?
Follow the thread...
#tlaplus #testing #smt #protocols
Follow the thread...
#tlaplus #testing #smt #protocols
December 16, 2025 at 3:52 PM
What value is your formal spec if it's totally disconnected from the implementation?
Follow the thread...
#tlaplus #testing #smt #protocols
Follow the thread...
#tlaplus #testing #smt #protocols
AI Assistants Now Aid in Formalizing System Designs
AI assistants are now helping to formally verify complex system designs using TLA+. Learn how this impacts software and network development.
#AISystemDesign, #TLAplus, #Form...
https://newsletter.tf/ai-helps-verify-system-designs-using-tla-plus/
AI assistants are now helping to formally verify complex system designs using TLA+. Learn how this impacts software and network development.
#AISystemDesign, #TLAplus, #Form...
https://newsletter.tf/ai-helps-verify-system-designs-using-tla-plus/
AI Assistants Now Aid in Formalizing System Designs
AI assistants are now helping to formally verify complex system designs using TLA+. Learn how this impacts software and network development.
newsletter.tf
May 30, 2026 at 6:39 AM
AI Assistants Now Aid in Formalizing System Designs
AI assistants are now helping to formally verify complex system designs using TLA+. Learn how this impacts software and network development.
#AISystemDesign, #TLAplus, #Form...
https://newsletter.tf/ai-helps-verify-system-designs-using-tla-plus/
AI assistants are now helping to formally verify complex system designs using TLA+. Learn how this impacts software and network development.
#AISystemDesign, #TLAplus, #Form...
https://newsletter.tf/ai-helps-verify-system-designs-using-tla-plus/
How do you objectively judge TLA+/pluscal specs? I’ve come up with a few ideas:
Completeness (all failure paths)
Abstraction level (idk how to judge objectively)
Sufficient invariants
# of states generated
Modularity??
Adding known bugs for tlc to find
Want to automate spec judging
#tlaplus
Completeness (all failure paths)
Abstraction level (idk how to judge objectively)
Sufficient invariants
# of states generated
Modularity??
Adding known bugs for tlc to find
Want to automate spec judging
#tlaplus
February 22, 2026 at 2:16 PM
How do you objectively judge TLA+/pluscal specs? I’ve come up with a few ideas:
Completeness (all failure paths)
Abstraction level (idk how to judge objectively)
Sufficient invariants
# of states generated
Modularity??
Adding known bugs for tlc to find
Want to automate spec judging
#tlaplus
Completeness (all failure paths)
Abstraction level (idk how to judge objectively)
Sufficient invariants
# of states generated
Modularity??
Adding known bugs for tlc to find
Want to automate spec judging
#tlaplus
The Kafka Replication Protocol with KIP-966 | Discussion
kafka-tlaplus/kafka_data_replication/kraft/kip-966/description/0_kafka_replication_protocol.md at main · Vanlightly/kafka-tlaplus
TLA+ specifications for Kafka related algorithms. Contribute to Vanlightly/kafka-tlaplus development by creating an account on GitHub.
github.com
September 2, 2025 at 7:40 PM
The Kafka Replication Protocol with KIP-966 | Discussion
Consulting session with client today ended with a working (if crude) prototype of testing code directly with a TLA+ spec
The gist is we can use IOExec (github.com/tlaplus/Comm...) to send commands to and read responses from a running program, and use those to determine the next states of our spec
The gist is we can use IOExec (github.com/tlaplus/Comm...) to send commands to and read responses from a running program, and use those to determine the next states of our spec
CommunityModules/modules/IOUtils.tla at master · tlaplus/CommunityModules
TLA+ snippets, operators, and modules contributed and curated by the TLA+ community - tlaplus/CommunityModules
github.com
May 23, 2025 at 7:54 PM
Consulting session with client today ended with a working (if crude) prototype of testing code directly with a TLA+ spec
The gist is we can use IOExec (github.com/tlaplus/Comm...) to send commands to and read responses from a running program, and use those to determine the next states of our spec
The gist is we can use IOExec (github.com/tlaplus/Comm...) to send commands to and read responses from a running program, and use those to determine the next states of our spec
Haven't written demo TLA+ (or is it #tlaplus?) models in quite some time, I think it'd be fun to do some of awkward real life situations. Like if two people are trying to pass each other in a hallway and entering a Walkward loop
May 7, 2025 at 7:26 PM
Haven't written demo TLA+ (or is it #tlaplus?) models in quite some time, I think it'd be fun to do some of awkward real life situations. Like if two people are trying to pass each other in a hallway and entering a Walkward loop
Fortunately, due to the work of Markus Kuppe (who I can't find on bsky rn), this is totally possible! TLC (the TLA+ model checker) has had "simulation mode" for a while, and on top of that, now has trace introspection + a JSON community module that can write to files.
github.com/tlaplus/Comm...
github.com/tlaplus/Comm...
CommunityModules/modules at master · tlaplus/CommunityModules
TLA+ snippets, operators, and modules contributed and curated by the TLA+ community - tlaplus/CommunityModules
github.com
April 23, 2025 at 8:18 PM
Fortunately, due to the work of Markus Kuppe (who I can't find on bsky rn), this is totally possible! TLC (the TLA+ model checker) has had "simulation mode" for a while, and on top of that, now has trace introspection + a JSON community module that can write to files.
github.com/tlaplus/Comm...
github.com/tlaplus/Comm...
I've been able to get a QoL feature merged into vscode-tlaplus, so that's nice
November 22, 2024 at 3:40 AM
I've been able to get a QoL feature merged into vscode-tlaplus, so that's nice
Dragged myself off the couch long enough to write up a cool TLA+ technique called "state sweeping" groups.google.com/g/tlaplus/c/...
Demo of sweeping parameter ranges with script
groups.google.com
October 7, 2024 at 9:23 PM
Dragged myself off the couch long enough to write up a cool TLA+ technique called "state sweeping" groups.google.com/g/tlaplus/c/...
First in a series of three - a gentle introduction to TLA+ and how it can be used to model-check your programs for concurrency bugs! https://www.g9labs.com/2022/03/09/what-s-the-fuss-about-formal-specifications-part-1/ #tlaplus
What's the fuss about formal specifications? (Part 1)
What Math ✨ can bring to your daily toolbox of programmin...
www.g9labs.com
February 5, 2025 at 10:13 AM
First in a series of three - a gentle introduction to TLA+ and how it can be used to model-check your programs for concurrency bugs! https://www.g9labs.com/2022/03/09/what-s-the-fuss-about-formal-specifications-part-1/ #tlaplus
Second in a 3-part series: in which we model a financial transaction system with TLA+ to track down a sneaky concurrency bug.
https://www.g9labs.com/2022/03/12/what-s-the-fuss-about-formal-specifications-part-2/
#tlaplus
https://www.g9labs.com/2022/03/12/what-s-the-fuss-about-formal-specifications-part-2/
#tlaplus
What's the fuss about formal specifications? (Part 2)
In which we debug a production bug (loosely based on a re...
www.g9labs.com
February 5, 2025 at 10:13 AM
Second in a 3-part series: in which we model a financial transaction system with TLA+ to track down a sneaky concurrency bug.
https://www.g9labs.com/2022/03/12/what-s-the-fuss-about-formal-specifications-part-2/
#tlaplus
https://www.g9labs.com/2022/03/12/what-s-the-fuss-about-formal-specifications-part-2/
#tlaplus
in honor of @hillelwayne.com , TLA+ github.com/tlaplus-comm...
GitHub - tlaplus-community/tree-sitter-tlaplus: A tree-sitter grammar for TLA⁺ and PlusCal
A tree-sitter grammar for TLA⁺ and PlusCal. Contribute to tlaplus-community/tree-sitter-tlaplus development by creating an account on GitHub.
github.com
December 1, 2025 at 1:45 PM
in honor of @hillelwayne.com , TLA+ github.com/tlaplus-comm...
Gems from TLA+ Community Day:
"Formal mathematics is nature's way of letting you know how sloppy your mathematics is." — Leslie Lamport
"Animation and visualization is nature's way of letting you know how sloppy your formal mathematics is." — Michael Leuschel
#FM2024 #TLAPlus
"Formal mathematics is nature's way of letting you know how sloppy your mathematics is." — Leslie Lamport
"Animation and visualization is nature's way of letting you know how sloppy your formal mathematics is." — Michael Leuschel
#FM2024 #TLAPlus
September 12, 2024 at 3:44 PM
April 15, 2024 at 5:30 PM
"TLA+ is a design time tool that accelerates our engineering practice" - Marc Brooker
It also reduces debugging time and, importantly, the frequency of paging engineers in the middle of the night!
#TLAPlusConf #TLAPlus #FormalMethods
It also reduces debugging time and, importantly, the frequency of paging engineers in the middle of the night!
#TLAPlusConf #TLAPlus #FormalMethods
April 15, 2024 at 4:33 PM
"TLA+ is a design time tool that accelerates our engineering practice" - Marc Brooker
It also reduces debugging time and, importantly, the frequency of paging engineers in the middle of the night!
#TLAPlusConf #TLAPlus #FormalMethods
It also reduces debugging time and, importantly, the frequency of paging engineers in the middle of the night!
#TLAPlusConf #TLAPlus #FormalMethods
Interested in how AWS uses TLA+? Check out the 2015 CACM article ⤵️
www.amazon.science/publications...
#TLAPlus #TLAPlusConf #OpenSource
www.amazon.science/publications...
#TLAPlus #TLAPlusConf #OpenSource
How Amazon Web Services uses formal methods
Since 2011, ENGINEERS at Amazon Web Services (AWS) have used formal specification and model checking to help solve difficult design problems in critical systems. Here, we describe our motivation and e...
www.amazon.science
April 15, 2024 at 4:26 PM
Interested in how AWS uses TLA+? Check out the 2015 CACM article ⤵️
www.amazon.science/publications...
#TLAPlus #TLAPlusConf #OpenSource
www.amazon.science/publications...
#TLAPlus #TLAPlusConf #OpenSource