swaits
e183cdd95e
Make `just verify` actually invoke Why3 + alt-ergo + z3 against every
Pearlite VC, and fix the mutant + miri pipelines along the way.
Verification crate
- Drop the const-generic CAP types for EventQueue / TimerTable.
Mirror with std::vec::Vec, whose creusot-std specs carry the
proof burden. Capacity behavior is exercised by the runtime's
own unit tests + correspondence tests.
- View impls are #[logic(open)] over a pub field so contracts on
push/pop/etc. can see the link to the inner Vec's @ view.
- 14/14 VCs discharge: EventQueue {new, push, pop, is_empty, len,
clear, Default}; TimerTable {new, len, is_empty, Default};
Entry derives.
- `cargo creusot prove --no-cache` always runs the SMT solvers;
`time` shows ~7s CPU on ~1.2s wall-clock = real parallel work.
Tooling
- verification/mise.toml pins nightly-2025-11-13 + rust-src,
rustc-dev, llvm-tools-preview, rustfmt; declares opam, python,
uv, and the project-local .venv. Inherits root mise.toml's just
+ cargo-* tools.
- just verify clones creusot v0.9.0 to ~/.local/share/hsmc-verify/
and runs the canonical ./INSTALL — that's the only way the
bundled prelude-generator + creusot-rustc actually build.
- just verify --no-cache forces SMT re-runs every time.
- Drop bespoke pin/install of cargo-creusot from mise.toml; the
cargo backend goes through cargo-binstall which can't pin a
multi-bin git workspace at a tag.
Mutants — was missing every JournalSink mutant
- Recipe runs with --features tokio,journal so journal_* and det_*
tests (gated on both) actually execute.
- Add clear_journal_empties_the_journal test in journal_smoke.rs
to kill the JournalSink::clear with-() mutant.
- Remove dead JournalSink::len + is_empty (called nowhere; only
existed as mutation-bait).
Result: 0 missed, 42 caught, 211 unviable (proc-macro emitted
code that mutants can't standalone-compile).
Miri — was hitting the trybuild glob isolation issue
- --exclude hsmc-macros (trybuild ui test isn't UB-relevant)
- --exclude hsmc-verification (different pinned toolchain)
- 66 tests pass under Miri, 0 UB.
Gitignore
- /verif/, /why3find.json, /.why3find/, **/.venv/ — all
regenerated by `just verify`. Repo stays clean of per-machine
prover timings + venv artifacts.
Misc
- Fix root-state targetability: `on(Trig) => <ChartName>;` resolves
to root id 0 in both ir.rs::resolve_transitions and
validate.rs's separate name_map.
- `set shell` and `set script-interpreter` route every justfile
recipe through `mise exec`, so all subshells see the right
Rust + opam + cargo-* tools regardless of how `just` was
invoked. No shebangs anywhere.
32 lines
1.2 KiB
Rust
32 lines
1.2 KiB
Rust
//! Correspondence test: verified [`TimerTable`] mirror vs runtime.
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//!
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//! The verified mirror currently exposes only `new`, `len`, `is_empty`.
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//! The runtime ops (`start`, `cancel_state`, `cancel_one`, `decrement`,
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//! `pop_expired`, `min_remaining`) aren't yet ported into the verified
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//! mirror — when they are, this test will grow to drive both with the
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//! same op sequence and assert step-by-step parity.
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//!
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//! For now the runtime's behavior on those ops is pinned by the
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//! determinism tests in `hsmc/tests/det_timers*.rs` and the unit tests
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//! in `hsmc/src/lib.rs::private_internals`.
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use hsmc::__private::TimerTable as RealTable;
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use hsmc_verification::timer_table::TimerTable as MirrorTable;
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#[test]
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fn corr_new_is_empty() {
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let real: RealTable<8> = RealTable::new();
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let mirror: MirrorTable = MirrorTable::new();
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assert_eq!(real.entries.len(), mirror.len());
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assert_eq!(real.entries.is_empty(), mirror.is_empty());
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}
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#[test]
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fn corr_default_is_empty() {
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let real: RealTable<8> = RealTable::default();
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let mirror: MirrorTable = MirrorTable::default();
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assert_eq!(real.entries.len(), mirror.len());
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assert!(mirror.is_empty());
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assert!(real.entries.is_empty());
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}
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