Robert Allan James
9b4bbc9de6
Covers the pure double-cell data-stack shuffle words from src/word_source/double_words.c. Deliberately scoped to exclude: - 2>R/2R>/2R@: branch on vm->ecw_nesting, a field vm_state doesn't track at all -- needs a model extension first, not attempted here. - S>D/D+/D-/DNEGATE/DABS/DMAX/DMIN/D</D=/D0=/D0</D2*/D2/: depend on cell_t being a fixed-width (64-bit) wrapping integer (explicit unsigned-long carry/borrow arithmetic, bitwise complement with wraparound). StarForth_Base.thy's "cell = int" is unbounded, not fixed-width, so this isn't expressible as currently modeled. Fixing it means deciding whether cell becomes a 64-bit word type everywhere (ripples into all 23 already-verified theories) -- a foundational decision, flagged for later, not made as a side effect of this file. 24 theory files now verify with zero errors.
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