Z3Prover/z3
Jan 2025 – Jun 2026
2 Months active
Languages Used
C++
Technical Skills
Bitvector TheoryConstraint PropagationSMT SolverC++C++ developmentalgorithm design
Can Cebeci
PROFILE
Can Cebeci
Worked on the Z3Prover/z3 repository to enhance the SMT solver’s handling of bitvector equalities and improve trace reporting reliability. Developed a feature that marks fixed-size bitvector equality literals as relevant, optimizing satisfiability checking and reducing unnecessary computation. Addressed trace output accuracy by refining generation number handling with cached data and streamlined trace generation logic. Improved output readability by enhancing quoting in the low-level pretty printer. Utilized C++ for core development, applying skills in bitvector theory, constraint propagation, algorithm optimization, and code refactoring. The work focused on measurable solver performance gains, maintainability, and clearer diagnostics for users and developers.
Overall Statistics
Feature vs Bugs
75%Features
Repository Contributions
5Total
Bugs
1
Commits
5
Features
3
Lines of code
28
Activity Months2
Work History
June 2026
4 Commits • 2 Features
Jun 1, 2026June 2026 — Z3 core improvements focused on trace reliability, performance, and output readability. Delivered targeted fixes to trace reporting with cached data, streamlined generation logic, and enhanced quoting in the low-level pretty printer. These changes improve debugging accuracy, reduce runtime overhead, and produce clearer, more actionable diagnostics for users.
4 Commits • 2 Features
Jun 1, 2026June 2026 — Z3 core improvements focused on trace reliability, performance, and output readability. Delivered targeted fixes to trace reporting with cached data, streamlined generation logic, and enhanced quoting in the low-level pretty printer. These changes improve debugging accuracy, reduce runtime overhead, and produce clearer, more actionable diagnostics for users.
June 2026
January 2025
1 Commits • 1 Features
Jan 1, 2025January 2025 (2025-01) - Z3Prover/z3 Key features delivered: - Bitvector Equality Literals Relevancy in the SMT solver: Mark fixed-size bitvector equality literals as relevant to improve satisfiability checking for certain bitvector equalities. This work reduces unnecessary exploration by pruning irrelevant fixed_eq literals in relevant contexts. Commit reference: 2d8f02468025d384ed854b5799222a9d3a17c26f with message: 'Mark fixed_eq literals as relevant (#7533)'. Major bugs fixed: - No major bugs fixed in this period for Z3Prover/z3 (focus remained on feature delivery and maintainability). Overall impact and accomplishments: - Business value: Enhanced SAT solving efficiency for bitvector equalities, leading to faster proofs and evaluation of bitvector-heavy workloads. - Technical impact: Added a clear relevancy signal for fixed-size bitvector literals, enabling better pruning and potentially reducing solving time on relevant benchmarks; preserved full traceability with commit history. - Accomplishments: Delivered and traceable through a single, focused commit; aligned with (#7533) task, and prepared groundwork for additional regression tests and broader applicability in bitvector reasoning. Technologies/skills demonstrated: - C++ and SMT solver internals, bitvector theory, and relevancy-based pruning. - Code provenance, commit hygiene, and review readiness within the Z3Prover/z3 repository. - Ability to translate feature work into measurable solver performance improvements and clear business value.
January 2025
1 Commits • 1 Features
Jan 1, 2025January 2025 (2025-01) - Z3Prover/z3 Key features delivered: - Bitvector Equality Literals Relevancy in the SMT solver: Mark fixed-size bitvector equality literals as relevant to improve satisfiability checking for certain bitvector equalities. This work reduces unnecessary exploration by pruning irrelevant fixed_eq literals in relevant contexts. Commit reference: 2d8f02468025d384ed854b5799222a9d3a17c26f with message: 'Mark fixed_eq literals as relevant (#7533)'. Major bugs fixed: - No major bugs fixed in this period for Z3Prover/z3 (focus remained on feature delivery and maintainability). Overall impact and accomplishments: - Business value: Enhanced SAT solving efficiency for bitvector equalities, leading to faster proofs and evaluation of bitvector-heavy workloads. - Technical impact: Added a clear relevancy signal for fixed-size bitvector literals, enabling better pruning and potentially reducing solving time on relevant benchmarks; preserved full traceability with commit history. - Accomplishments: Delivered and traceable through a single, focused commit; aligned with (#7533) task, and prepared groundwork for additional regression tests and broader applicability in bitvector reasoning. Technologies/skills demonstrated: - C++ and SMT solver internals, bitvector theory, and relevancy-based pruning. - Code provenance, commit hygiene, and review readiness within the Z3Prover/z3 repository. - Ability to translate feature work into measurable solver performance improvements and clear business value.
Activity
Loading activity data...
Quality Metrics
Correctness96.0%
Maintainability96.0%
Architecture92.0%
Performance88.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
C++
Technical Skills
Bitvector TheoryC++C++ developmentConstraint PropagationSMT Solveralgorithm designalgorithm optimizationcode refactoringdata structuresdebuggingsoftware engineering
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline