ftsrg/theta
Nov 2024 – Oct 2025
10 Months active
Languages Used
JavaKotlinANTLRGradleC++XMLXSTSMarkdown
Technical Skills
Algorithm DesignAlgorithm OptimizationCachingCode AnalysisCode FormattingCode Refactoring
mondokm
PROFILE
Mondokm
Milan Mondok contributed to the ftsrg/theta repository by engineering advanced model checking and verification features, focusing on reliability, performance, and maintainability. He developed and optimized MDD-based analysis, implemented cross-platform solver support, and enhanced event handling and trace generation for XSTS and Petri net models. Using Java, Kotlin, and Gradle, Milan refactored core components for better testability, introduced variable ordering heuristics, and improved expression simplification to prevent errors such as division by zero. His work included robust CLI tooling, caching strategies, and code cleanup, resulting in a more scalable, deterministic, and developer-friendly verification pipeline with strong test coverage.
Overall Statistics
Feature vs Bugs
64%Features
Repository Contributions
168Total
Bugs
25
Commits
168
Features
45
Lines of code
40,338
Activity Months10
Your Network
7 people
Work History
October 2025
13 Commits • 6 Features
Oct 1, 2025October 2025 monthly summary for ftsrg/theta: Delivered several high-impact features and robustness improvements that advance model checking capabilities and developer productivity. Key features include a Petri Net FORCE variable ordering heuristic to improve direct PN analysis, the XSTS flattening pass with a CLI option for flattening depth, and enhanced event handling across MonolithicExpr and XCFA with event-based dependencies and improved event span calculations. Broad code quality enhancements and architectural refinements underpinned these deliveries, including MddChecker descriptor unification and enhanced expression simplification robustness.
13 Commits • 6 Features
Oct 1, 2025October 2025 monthly summary for ftsrg/theta: Delivered several high-impact features and robustness improvements that advance model checking capabilities and developer productivity. Key features include a Petri Net FORCE variable ordering heuristic to improve direct PN analysis, the XSTS flattening pass with a CLI option for flattening depth, and enhanced event handling across MonolithicExpr and XCFA with event-based dependencies and improved event span calculations. Broad code quality enhancements and architectural refinements underpinned these deliveries, including MddChecker descriptor unification and enhanced expression simplification robustness.
October 2025
September 2025
26 Commits • 8 Features
Sep 1, 2025September 2025 summary for ftsrg/theta delivering modernization, visualization, and analysis enhancements that improve reliability, traceability, and maintainability while expanding PN/MDD capabilities.
September 2025
26 Commits • 8 Features
Sep 1, 2025September 2025 summary for ftsrg/theta delivering modernization, visualization, and analysis enhancements that improve reliability, traceability, and maintainability while expanding PN/MDD capabilities.
August 2025
3 Commits
Aug 1, 2025Month: 2025-08 | Focus: reliability improvements and release readiness for ftsrg/theta. Key deliverables include correcting variable equality handling in conditional expressions and completing routine release maintenance via Gradle version bumps. Outcomes: improved correctness of expression transformation, reduced nondeterministic behavior in conditionals, and clearer release versioning for downstream CI and users. This month also reinforced code quality through targeted maintenance tasks and prepared the project for a stable 6.17.x line.
3 Commits
Aug 1, 2025Month: 2025-08 | Focus: reliability improvements and release readiness for ftsrg/theta. Key deliverables include correcting variable equality handling in conditional expressions and completing routine release maintenance via Gradle version bumps. Outcomes: improved correctness of expression transformation, reduced nondeterministic behavior in conditionals, and clearer release versioning for downstream CI and users. This month also reinforced code quality through targeted maintenance tasks and prepared the project for a stable 6.17.x line.
August 2025
July 2025
38 Commits • 10 Features
Jul 1, 2025July 2025 focused on strengthening the Theta verification pipeline to drive reliability, throughput, and release readiness. Delivered identity support and descriptor handling to improve symbolic-to-struct transformations and reverse descriptor correctness. Enhanced CEGAR variable ordering by basing order on written variables and computing per iteration, reducing solver iterations and improving convergence. Established a monolithic XSTS infrastructure and passes, along with wiring improvements, enabling more scalable verification and easier maintenance. Introduced timeouts for trace generation and made the TraceProvider interruptible, boosting responsiveness under CI and large workloads. Refined delta reporting and MDD checking with splitting in the monolithic MDD checker, plus related refactors and a version bump to prepare for release. These changes collectively improve end-to-end verification reliability, performance, and developer productivity, enabling faster delivery of high-assurance software.
July 2025
38 Commits • 10 Features
Jul 1, 2025July 2025 focused on strengthening the Theta verification pipeline to drive reliability, throughput, and release readiness. Delivered identity support and descriptor handling to improve symbolic-to-struct transformations and reverse descriptor correctness. Enhanced CEGAR variable ordering by basing order on written variables and computing per iteration, reducing solver iterations and improving convergence. Established a monolithic XSTS infrastructure and passes, along with wiring improvements, enabling more scalable verification and easier maintenance. Introduced timeouts for trace generation and made the TraceProvider interruptible, boosting responsiveness under CI and large workloads. Refined delta reporting and MDD checking with splitting in the monolithic MDD checker, plus related refactors and a version bump to prepare for release. These changes collectively improve end-to-end verification reliability, performance, and developer productivity, enabling faster delivery of high-assurance software.
June 2025
5 Commits • 3 Features
Jun 1, 2025June 2025 highlights: Implemented MDD-based trace generation and debugging enhancements for XSTS and MonolithicExpr with experimental CEGAR; introduced a spacecraft power/transmission model with a safety property to prevent transmission when battery is below 40%; and completed release hygiene with a version bump to 6.17.0 and code cleanups. These workstreams improve diagnostic capabilities, reliability of verification models, and overall maintainability across the repository.
5 Commits • 3 Features
Jun 1, 2025June 2025 highlights: Implemented MDD-based trace generation and debugging enhancements for XSTS and MonolithicExpr with experimental CEGAR; introduced a spacecraft power/transmission model with a safety property to prevent transmission when battery is below 40%; and completed release hygiene with a version bump to 6.17.0 and code cleanups. These workstreams improve diagnostic capabilities, reliability of verification models, and overall maintainability across the repository.
June 2025
May 2025
17 Commits • 3 Features
May 1, 2025May 2025 monthly summary for ftsrg/theta: Focused on strengthening MDD-based verification, expanding literal support, and improving build/release reliability. Delivered explicit representation extraction, on-the-fly reachability pruning, and collision handling improvements; extended LitExprConverter to support RatLitExpr; stabilized the test suite; and completed release hygiene with version bumps, formatting, macOS path fixes, and delta-jar updates. These changes improved verification performance and accuracy, broadened literal handling in MDD contexts, and enhanced CI/release robustness.
May 2025
17 Commits • 3 Features
May 1, 2025May 2025 monthly summary for ftsrg/theta: Focused on strengthening MDD-based verification, expanding literal support, and improving build/release reliability. Delivered explicit representation extraction, on-the-fly reachability pruning, and collision handling improvements; extended LitExprConverter to support RatLitExpr; stabilized the test suite; and completed release hygiene with version bumps, formatting, macOS path fixes, and delta-jar updates. These changes improved verification performance and accuracy, broadened literal handling in MDD contexts, and enhanced CI/release robustness.
April 2025
11 Commits • 4 Features
Apr 1, 2025April 2025 achievements at ftsrg/theta: - Focus: deliver reliable PNML parsing, faster MDD analysis, and a more stable test suite. - Key features delivered: • PNML Page Structure Support: Enhanced PNML parser to optionally parse 'page' elements, defaulting to 'net' when absent to improve organization. • MDD Handling Performance Improvements: Optimized solver usage (return solver when node is complete) and added caching for MddStateSpaceInfo to reduce redundant computations. • Testing Suite Enhancements: Integrated large PNML test resource and updated test configurations to stabilize the test suite. • Maintenance: Version bumps, formatting cleanup, and removal of an unused dependency. - Major bugs fixed: • XSTS Enum Type Inference Bug Fix: Refactors symbol definition check to use symbolToValue map and improves error context when rethrowing ParseException in XSTS. • MDD moveUp Bug Fix: Corrected moveUp handling in MddExpressionRepresentation and updated tests. - Overall impact and accomplishments: • Increased reliability of PNML parsing and MDD analysis, with clearer error reporting. • Faster, more deterministic CI with a stabilized test suite and reduced redundant computations by caching. • Clearer maintenance path through versioning hygiene and dependency cleanup. - Technologies/skills demonstrated: • Refactoring to symbolToValue maps, error-context enhancements, solver usage optimization, caching strategies, and test-resource management.
11 Commits • 4 Features
Apr 1, 2025April 2025 achievements at ftsrg/theta: - Focus: deliver reliable PNML parsing, faster MDD analysis, and a more stable test suite. - Key features delivered: • PNML Page Structure Support: Enhanced PNML parser to optionally parse 'page' elements, defaulting to 'net' when absent to improve organization. • MDD Handling Performance Improvements: Optimized solver usage (return solver when node is complete) and added caching for MddStateSpaceInfo to reduce redundant computations. • Testing Suite Enhancements: Integrated large PNML test resource and updated test configurations to stabilize the test suite. • Maintenance: Version bumps, formatting cleanup, and removal of an unused dependency. - Major bugs fixed: • XSTS Enum Type Inference Bug Fix: Refactors symbol definition check to use symbolToValue map and improves error context when rethrowing ParseException in XSTS. • MDD moveUp Bug Fix: Corrected moveUp handling in MddExpressionRepresentation and updated tests. - Overall impact and accomplishments: • Increased reliability of PNML parsing and MDD analysis, with clearer error reporting. • Faster, more deterministic CI with a stabilized test suite and reduced redundant computations by caching. • Clearer maintenance path through versioning hygiene and dependency cleanup. - Technologies/skills demonstrated: • Refactoring to symbolToValue maps, error-context enhancements, solver usage optimization, caching strategies, and test-resource management.
April 2025
March 2025
7 Commits • 2 Features
Mar 1, 2025March 2025 monthly summary for ftsrg/theta focusing on delivering cross-platform solver capabilities, stability improvements, and release readiness. This note highlights concrete technical deliveries, their impact on system reliability, and the business value of broader compatibility and cleaner codebase.
March 2025
7 Commits • 2 Features
Mar 1, 2025March 2025 monthly summary for ftsrg/theta focusing on delivering cross-platform solver capabilities, stability improvements, and release readiness. This note highlights concrete technical deliveries, their impact on system reliability, and the business value of broader compatibility and cleaner codebase.
February 2025
34 Commits • 7 Features
Feb 1, 2025February 2025: Delivered key features and fixes in the Theta verification stack with a focus on auditability, reliability, and CLI usability. Highlights include result logging for BoundedChecker, XSTS enhancements with IC3 integration, STS CLI upgrades with GSAT support, and a refactor of MddChecker to MonolithicExpr, along with IC3 optimization improvements. These changes improve debugging, test coverage, and overall verification throughput.
34 Commits • 7 Features
Feb 1, 2025February 2025: Delivered key features and fixes in the Theta verification stack with a focus on auditability, reliability, and CLI usability. Highlights include result logging for BoundedChecker, XSTS enhancements with IC3 integration, STS CLI upgrades with GSAT support, and a refactor of MddChecker to MonolithicExpr, along with IC3 optimization improvements. These changes improve debugging, test coverage, and overall verification throughput.
February 2025
November 2024
14 Commits • 2 Features
Nov 1, 2024Monthly summary for 2024-11 (ftsrg/theta). The month focused on delivering robustness and reliability enhancements for CFA/XCFA analysis and strengthening the MDD/XSTS verification workflow, with strong emphasis on business value, test coverage, and code quality.
November 2024
14 Commits • 2 Features
Nov 1, 2024Monthly summary for 2024-11 (ftsrg/theta). The month focused on delivering robustness and reliability enhancements for CFA/XCFA analysis and strengthening the MDD/XSTS verification workflow, with strong emphasis on business value, test coverage, and code quality.
Activity
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Quality Metrics
Correctness86.6%
Maintainability85.8%
Architecture83.0%
Performance77.2%
AI Usage20.0%
Skills & Technologies
Programming Languages
ANTLRC++GradleJavaKotlinMarkdownXMLXSTS
Technical Skills
API DesignAbstract InterpretationAlgorithm AnalysisAlgorithm DebuggingAlgorithm DesignAlgorithm ImplementationAlgorithm OptimizationBackend DevelopmentBitwise OperationsBug FixingBuild AutomationBuild ConfigurationBuild ManagementBuild Script ManagementBuild System Configuration
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