June 2026 monthly summary for strata-org/Strata focusing on delivering Lean SMT-LIB ArraysEx theory support and translation for the metaverifier, enabling array-based models and improving proof generation. This month, major work centered on implementing a Lean model of the ArraysEx theory, translating SMT-IR Array sorts to SmtArray, and wiring the useArrayTheory flag through the proof path to leverage native array reasoning. These changes unlock verification for Map programs under array theory with higher accuracy and reliability, reducing reliance on abstract Map sorts and uninterpreted selectors in SMT terms.

February 2026: Delivered Lean termination-checker compatibility improvements in strata-org/Strata by removing custom SizeOf instances and leveraging String.length. This change enhances reliability, automation, and maintainability, reducing termination-checker related failures and simplifying future migrations.

Month 2025-11: Delivered a targeted SMT Variable Handling Refactor in strata-org/Strata to standardize free variables as Universally Free variables (UFs) in SMT DL. This refactor aligns variable representation with SMT-LIB, reduces special-case logic, and improves maintainability and test reliability. The work lays the foundation for broader SMT core improvements and smoother onboarding for contributors.

In August 2025, the opencompl/lean-mlir project delivered a benchmark reporting enhancement for CoqQFBV within the SMT-LIB suite. The work focused on computing and reporting statistics for coqQFBV numbers, integrating a new data source for coqQFBV results, and updating the LaTeX output to include solved counts and percentage solved metrics. Additionally, the total solved calculation for Bitwuzla and Leanwuzla was refined by excluding 'unknown' results to improve accuracy. These changes improve benchmark transparency, reliability, and actionability for optimization and resource allocation.

July 2025 — Lean MLIR: Strengthened build reliability and artifact integrity. Implemented end-to-end alignment of build tooling and documentation with the latest stable components, enabling reproducible builds and accurate artifacts for release and audits.

June 2025 monthly summary for opencompl/lean-mlir: Delivered an end-to-end SMT-LIB benchmarking framework and improved CI reliability. Implemented setup and integration of the benchmarking framework, including scripts and Dockerfile commands to install solvers, run benchmarks in parallel, and groundwork for future aggregation and analysis of results. The feature encompasses run.sh integration, MTl and GRATchk support, SMT-LIB plotting updates, and artifact execution support. Fixed CI log noise by switching from apt to apt-get updates/installations, ensuring cleaner logs while preserving functionality. Groundwork laid for data-driven benchmarking, enabling repeatable tests and quicker feedback. Technologies demonstrated: Docker, shell scripting, CI/CD practices, SMT-LIB tooling, and artifact management.