Convert VDM-SL proof obligations to SMT-LIB and verify with Z3.
npx skills add https://github.com/kotaroyamame/formal-agent-contracts --skill smt-verify
Please help me install this Agent Skill. Skill: smt-verify Source: https://github.com/kotaroyamame/formal-agent-contracts/tree/main/skills/smt-verify Command: npx skills add https://github.com/kotaroyamame/formal-agent-contracts --skill smt-verify
Converts VDM-SL proof obligations into SMT-LIB and automatically verifies them using the Z3 solver.
Provide a VDM-SL PO file and run the SMT verification workflow to obtain the verdict.
High-intent search queries and answers about installing and using this skill.
Automated VDM-SL proof obligation verification works by translating the obligations into SMT-LIB format and checking them with the Z3 solver. It returns proved, counterexample, or unknown verdicts for each obligation.
Z3 verifies common VDM-SL proof obligations such as invariant satisfiability, state initialization, map apply, subtype checks, and operation postconditions by mapping them into SMT-LIB expressions for solver evaluation.
VDMJ is required to generate the VDM-SL proof obligations needed for SMT verification. The workflow takes these generated POs, applies formal type and expression mapping rules, and converts them into SMT-LIB format.
VDM-SL to SMT-LIB translation applies defined formal type and expression mapping rules to proof obligations. This conversion standardizes VDM-SL logic into SMT-LIB syntax so the Z3 solver can evaluate satisfiability.
A counterexample indicates the VDM-SL proof obligation is satisfiable, meaning Z3 found a specific state where the invariant or condition fails. The verification workflow extracts and reports this counterexample.
Automated formal verification with Z3 can return an unknown result for VDM-SL proof obligations if the solver cannot determine satisfiability. This occurs when translated SMT-LIB expressions fall outside Z3's decidable logic fragments.
kotaroyamameValidate VDM-SL files with VDMJ and explain syntax, type, and proof obligation results.
photoszztDebug TLA+ invariant and property violations reported by the TLC model checker.
kotaroyamameGenerate TypeScript and Python scaffolds from VDM-SL specifications.
benbrastmckieDevelop modular semantic theories with ModelChecker and Z3 SMT solver.
