acl2/acl2
Apr 2025 – Feb 2026
3 Months active
Languages Used
LispPythonShellOrg-modeTeX
Technical Skills
ACL2sCommon LispFFISMT SolversScriptingZ3 Integration
Andrew Walter
PROFILE
Andrew Walter
Walter contributed to the acl2/acl2 repository by developing demonstration materials and a script generator to facilitate integration between ACL2s and the Z3 SMT solver, using Common Lisp and scripting to automate FFI binding generation and usability tests. He extended documentation coverage by updating BibTeX and LaTeX references for ACL2 workshops, improving scholarly traceability and onboarding support. Walter also addressed a type-safety issue in the CGen callback, implementing functional programming techniques and type checking to prevent build-time errors under strict safety settings. His work demonstrated depth in both feature development and maintenance, with careful attention to documentation quality and build stability.
Overall Statistics
Feature vs Bugs
67%Features
Repository Contributions
3Total
Bugs
1
Commits
3
Features
2
Lines of code
11,928
Activity Months3
Your Network
30 peopleShared Repositories
30
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Ankit KumarMember
Eric McCarthyMember
Cuong ChauMember
David RussinoffMember
Daniil IaitskovMember
Work History
February 2026
1 Commits
Feb 1, 2026February 2026 monthly review for acl2/acl2 focused on stabilizing builds and improving safety-related behavior. Delivered a critical type-safety fix to the CGen callback to prevent build-time failures when ACL2 is built with safety checks enabled (safety 3). The change guards the ctx value to ensure it is not a string before invoking car, addressing a type error that previously caused build failures.
1 Commits
Feb 1, 2026February 2026 monthly review for acl2/acl2 focused on stabilizing builds and improving safety-related behavior. Delivered a critical type-safety fix to the CGen callback to prevent build-time failures when ACL2 is built with safety checks enabled (safety 3). The change guards the ctx value to ensure it is not a string before invoking car, addressing a type error that previously caused build failures.
February 2026
May 2025
1 Commits • 1 Features
May 1, 2025May 2025 ACL2/acl2 delivered a targeted documentation enhancement to extend workshop references, increasing coverage across 2018–2023 papers. Updates touched README.org and the docs artifacts workshops.bib and workshops.tex, adding new BibTeX entries and LaTeX citations to reflect extended coverage. The change was implemented via a single focused commit (e5a63f99dbcea79020029662873464306dd45d81). No major bugs were fixed this month; emphasis was on improving documentation quality, discoverability, and maintainability to support onboarding, reproducibility, and external research integration.
May 2025
1 Commits • 1 Features
May 1, 2025May 2025 ACL2/acl2 delivered a targeted documentation enhancement to extend workshop references, increasing coverage across 2018–2023 papers. Updates touched README.org and the docs artifacts workshops.bib and workshops.tex, adding new BibTeX entries and LaTeX citations to reflect extended coverage. The change was implemented via a single focused commit (e5a63f99dbcea79020029662873464306dd45d81). No major bugs were fixed this month; emphasis was on improving documentation quality, discoverability, and maintainability to support onboarding, reproducibility, and external research integration.
April 2025
1 Commits • 1 Features
Apr 1, 2025April 2025 monthly summary for acl2/acl2: Delivered the ACL2s-Z3 Interface Demonstration Materials and FFI Binding Script Generator. Created supplemental workshop files for the ACL2s-to-Z3 interface, including Lisp examples (basic assertions, bitvectors, sequences, strings, and uninterpreted functions) and scripts to generate FFI bindings along with tests to demonstrate usability. No major bugs fixed this period.
1 Commits • 1 Features
Apr 1, 2025April 2025 monthly summary for acl2/acl2: Delivered the ACL2s-Z3 Interface Demonstration Materials and FFI Binding Script Generator. Created supplemental workshop files for the ACL2s-to-Z3 interface, including Lisp examples (basic assertions, bitvectors, sequences, strings, and uninterpreted functions) and scripts to generate FFI bindings along with tests to demonstrate usability. No major bugs fixed this period.
April 2025
Activity
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Quality Metrics
Correctness100.0%
Maintainability93.4%
Architecture93.4%
Performance86.6%
AI Usage20.0%
Skills & Technologies
Programming Languages
LispOrg-modePythonShellTeX
Technical Skills
ACL2sBibTeX ManagementCommon LispDocumentationFFISMT SolversScriptingTechnical WritingZ3 Integrationdebuggingfunctional programmingtype checking
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