esbmc/esbmc
Mar 2026 – Apr 2026
2 Months active
Languages Used
CC++
Technical Skills
C programmingC++ developmentC++ programmingalgorithm designcommand line interface designfloating-point arithmetic
ShemaAlosaimi
PROFILE
Shemaalosaimi
Shema Alosaimi enhanced floating-point reasoning in the esbmc/esbmc repository by developing theorem-driven enclosure frameworks and interval lifting techniques, focusing on IEEE-754 compliance. Using C and C++, Shema implemented robust rounding-mode support and improved SMT encoding to increase the accuracy and reliability of floating-point semantics. The work included propagating interval metadata across assignments, enabling precise bound preservation in SSA variables, and expanding regression testing to cover multiple rounding modes and precision variants. These engineering efforts deepened the formal verification capabilities of the codebase, reduced false negatives in edge cases, and improved the maintainability and correctness of floating-point interval lifting.
Overall Statistics
Feature vs Bugs
100%Features
Repository Contributions
13Total
Bugs
0
Commits
13
Features
4
Lines of code
3,255
Activity Months2
Your Network
22 peopleSame Organization
@postgrad.manchester.ac.uk1
Work History
April 2026
4 Commits • 2 Features
Apr 1, 2026April 2026 (2026-04): Delivered substantial floating-point interval lifting enhancements in esbmc/esbmc, improving soundness, accuracy, and regression resilience of the IR-RA lifting paths. Implemented IEEE-754 interval lifting for ieee_add with RNA intervals and ROUND_TO_AWAY support, and added a dedicated RNE path for ieee_sub, each with regression coverage. Propagated lifted interval metadata across assignments to preserve bounds across SSA variables, enabling correct reuse of prior lifted bounds. Expanded regression tests to strengthen tracked-sub scenarios and to validate multi- and single-precision variants, reducing future regressions. Overall, these changes enhance FP verification precision, reduce false negatives on corner cases, and improve maintainability of the interval lifting codebase.
4 Commits • 2 Features
Apr 1, 2026April 2026 (2026-04): Delivered substantial floating-point interval lifting enhancements in esbmc/esbmc, improving soundness, accuracy, and regression resilience of the IR-RA lifting paths. Implemented IEEE-754 interval lifting for ieee_add with RNA intervals and ROUND_TO_AWAY support, and added a dedicated RNE path for ieee_sub, each with regression coverage. Propagated lifted interval metadata across assignments to preserve bounds across SSA variables, enabling correct reuse of prior lifted bounds. Expanded regression tests to strengthen tracked-sub scenarios and to validate multi- and single-precision variants, reducing future regressions. Overall, these changes enhance FP verification precision, reduce false negatives on corner cases, and improve maintainability of the interval lifting codebase.
April 2026
March 2026
9 Commits • 2 Features
Mar 1, 2026In March 2026, the ESBMC repository advanced FP reasoning through a series of theorem-driven enclosures and interval lifting, enhancing accuracy and reliability of floating-point semantics in IR-RA. The work delivered robust rounding-mode support across all IEEE-754 modes, improved SMT encoding for precise enclosure propagation, and expanded regression coverage—all while aligning user-facing controls with IEEE-754 focus.
March 2026
9 Commits • 2 Features
Mar 1, 2026In March 2026, the ESBMC repository advanced FP reasoning through a series of theorem-driven enclosures and interval lifting, enhancing accuracy and reliability of floating-point semantics in IR-RA. The work delivered robust rounding-mode support across all IEEE-754 modes, improved SMT encoding for precise enclosure propagation, and expanded regression coverage—all while aligning user-facing controls with IEEE-754 focus.
Activity
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Quality Metrics
Correctness97.0%
Maintainability83.0%
Architecture93.8%
Performance83.0%
AI Usage40.0%
Skills & Technologies
Programming Languages
CC++
Technical Skills
C programmingC++ developmentC++ programmingalgorithm designcommand line interface designfloating-point arithmeticformal verificationnumerical analysisreal arithmeticregression testingsoftware engineeringsoftware testingsolver integrationtheorem proving
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