Virgile Prevosto authored 3 years ago and David Bühler committed 2 years ago

same issue as with compinfo

Virgile Prevosto authored 3 years ago and David Bühler committed 2 years ago

it turns out that not all global varinfos are stored in Globals.Vars...

Virgile Prevosto authored 3 years ago and David Bühler committed 2 years ago

same reason as for locals: latter formals can refer to former ones

Virgile Prevosto authored 3 years ago and David Bühler committed 2 years ago

a local can be referenced in the type of another one, hence we can't
compare them in the same environment and update said environment
afterwards.

Virgile Prevosto authored 3 years ago and David Bühler committed 2 years ago

actually, we visit the spec of a function at its first occurrence,
so that it is possible that some global logic definitions
that are used in the constract haven't been visited yet.

Virgile Prevosto authored 3 years ago and David Bühler committed 2 years ago

Specifically if a global declaration `x` occurs between a
function declaration `f` and the definition of `f` which uses `x`

Virgile Prevosto authored 3 years ago and David Bühler committed 2 years ago

also working oracle for AST diff test

The cvalues cannot precisely represent structs and arrays: they are irrelevant
and could degrade the state precision for such lvalues.

Valentin Perrelle authored 2 years ago and David Bühler committed 2 years ago

- fixed incorrect assigns
- imprecise but correct handling of allocates
- handling imprecise assigns on sub parts of a base
- always normalize the domain by removing tops when updating the map

Valentin Perrelle authored 2 years ago and David Bühler committed 2 years ago

- Remove empty segments before bound updates so the oracle can be used
- Remove empty segments before joins and updates to improve precision
- Keep segmentation hints as long as possible
- Add comments to the test

Valentin Perrelle authored 3 years ago and David Bühler committed 2 years ago

- many cases where equality/inclusions are verified

Valentin Perrelle authored 3 years ago and David Bühler committed 2 years ago

- Unification doesn't keep empty slices anymore so they can't accumulate
- Fix the conversion of bounds to constants