proof-carrying-code-generator

Generate executable code together with formal proofs certifying safety and correctness properties in Isabelle/HOL or Coq. Use when building verified software, safety-critical systems, or when formal guarantees are required. Produces code with accompanying proofs for memory safety, bounds checking, functional correctness, invariant preservation, and termination. Supports extraction to OCaml/Haskell/SML and integration with existing codebases.

1.01x

Quality

92%

Does it follow best practices?

Impact

92%

1.01x

Average score across 3 eval scenarios

Securityby

Passed

No known issues

Evaluation results

100%

Safe Collection Operations Library

Isabelle memory safety & code extraction

Criteria

Without context

With context

safe_nth bounds lemma

100%

safe_nth option type

100%

safe_div None for zero

100%

safe_div correctness lemma

100%

safe_head non-empty proof

100%

export_code syntax

83%

100%

export_code targets functions

100%

Theory structure

100%

Proof summary document

100%

Safety via option types

100%

Proof completion markers

100%

76%

-2%

Verified GCD with Efficient OCaml Extraction

Coq extraction customization & Program framework

Criteria

Without context

With context

Coq Extraction command

100%

Extraction Language OCaml

Extract Inductive nat

66%

100%

Extract Constant arithmetic

50%

100%

Specification function

40%

Termination proof mechanism

100%

50%

Correctness theorem

100%

Require Extraction import

100%

50%

Extraction notes file

100%

No Isabelle syntax

100%

Refinement-Based Verified Binary Search Tree

Refinement-based workflow & invariant preservation

Criteria

Without context

With context

Abstract specification

83%

100%

Concrete implementation

100%

Refinement/correctness proof

100%

BST invariant predicate

100%

Invariant preservation proof

100%

Code extraction command

100%

Correct extraction syntax

100%

Design notes refinement steps

100%

BST datatype definition

100%

Ordering in invariant

100%

Repository: ArabelaTso/Skills-4-SE
Commit: 0f00a4f

Evaluated: 29 days ago
Agent: Claude Code
Model: Claude Sonnet 4.6

Table of Contents

Safe Collection Operations Library Verified GCD with Efficient OCaml Extraction Refinement-Based Verified Binary Search Tree

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