Robert Allan James
a34fba5c1c
1 of 7 registered words modeled, partially: (FIND)'s two concretely- decidable failure branches (invalid address; invalid length-derived range). Its "found" branch, and VOCABULARY/DEFINITIONS/CONTEXT/CURRENT/ FORTH/ORDER entirely, are deferred. Genuine finding: this is the 7th and by far most severe occurrence of the file-scope-static-instead-of-per-VM-field bug pattern in this sweep. The ENTIRE vocabulary subsystem (forth_vocab/context_vocab/current_vocab, context_var_addr/current_var_addr, the first-character search index) is file-scope C statics, not struct VM fields. In the Tripod multi-VM fleet, one VM's VOCABULARY/DEFINITIONS/FORTH silently changes where every other VM looks up and defines words -- a correctness hazard in ordinary word resolution for the whole fleet, not just a diagnostic-flag leak like the smaller prior instances. init_vocabulary_system's `static int initialized` guard compounds this: only the first VM to touch any vocabulary word seeds the vocabulary roots, from its own dictionary.
proof/
Isabelle/HOL theory files providing machine-checkable proofs of determinism and correctness for StarForth. 24 theory files covering all 7 feedback loops, core word categories, and the word-level ACL system.
Running proofs
isabelle build -D proof/
Requires an Isabelle installation. See docs/01-getting-started/DEVELOPER.md.
Theory files
Foundations
| File | Covers |
|---|---|
StarForth_Base.thy |
Base definitions and type system |
StarForth_Correctness.thy |
Overall correctness |
StarForth_Transition.thy |
State transitions |
StarForth_Concurrent.thy |
Concurrency properties |
StarForth_Mutex.thy |
Mutual exclusion |
Physics loops (1–7)
| File | Loop |
|---|---|
StarForth_Loop1_Heat.thy |
Execution heat tracking |
StarForth_Loop2_Window.thy |
Rolling window of truth |
StarForth_Loop3_Decay.thy |
Linear decay |
StarForth_Loop4_Pipeline.thy |
Word transition prediction |
StarForth_Loop5_WinInf.thy |
Window width inference |
StarForth_Loop6_DecayInf.thy |
Decay slope inference |
StarForth_Loop7_Heartrate.thy |
Adaptive heartrate |
Word categories
StarForth_Arithmetic_Words.thy, StarForth_Stack_Words.thy,
StarForth_Logical_Words.thy, StarForth_Memory_Words.thy,
StarForth_Return_Stack_Words.thy, StarForth_Q48_16.thy
ACL system (Phase 6)
| File | Property |
|---|---|
ACL_Pin_Monotone.thy |
Pin is one-way |
ACL_Inherit_Clears_Pin.thy |
Inheritance clears pin |
ACL_TTL_Bounded.thy |
TTL stays within bounds |
ACL_Emergency_Bypass.thy |
Emergency console bypass |
ACL_No_Escalation.thy |
No privilege escalation |
See also
ROOT— Isabelle project manifest- Project root