Summary:
- Change representation of Concat expressions from curried binary
operator to an nary one. This enables normalizing Concat expressions
with respect to associativity.
- Generalize Exp.solve to return a map rather than a pair of exps, to
enable expressing cases where solving an equation yields multiple
equations.
- Strengthen solver with implied equalities between sums of sizes of
concatenations of byte arrays.
Reviewed By: ngorogiannis
Differential Revision: D14297865
fbshipit-source-id: b40871559
Summary:
This patch adds an embarrassingly inefficient implementation of a
decision procedure for equality in the theories of uninterpreted
functions and linear arithmetic. A Shostak-style approach, where a
single congruence closure structure is shared by all theories, is
used. This is mostly based on the corrected variant of Shostak's
algorithm from:
Harald Rueβ and Natarajan Shankar. 2001. Deconstructing Shostak. In
Proceedings of the 16th Annual IEEE Symposium on Logic in Computer
Science (LICS '01).
Reviewed By: jvillard
Differential Revision: D14251655
fbshipit-source-id: 8a080145f
Summary:
- Add nary expressions implemented using a form of multisets which
support any integer multiplicity
- Reimplement polynomials using new nary expressions
- Move the decomposition of exps into "base plus offset" form into
Exp, to enforce simplification invariants
- Revise expression simplification to cooperate with congruence
closure (mainly: simplification should not invent new
subexpressions)
- Reimplement congruence closure plus integer offsets to
+ cope with new representation of polynomials using nary expression forms
+ be diligent about maintaining which expressions are in the relation
+ add lots of invariant checking for the correlations between the
componnents of the congruence closure data structures
Reviewed By: jvillard
Differential Revision: D14075512
fbshipit-source-id: 2dbaf3d11
Summary:
Even pretty-printed congruence relations are verbose, and most
operations do not change much of the relation. So on return, print
only the symmetric difference between input and output relations.
Reviewed By: mbouaziz
Differential Revision: D14075513
fbshipit-source-id: b1f0ae6d0
Summary:
`sledge -c foo.bc` generates a binary file `foo.bc.llair` which can be
analyzed with `sledge foo.bc.llair`, and converted to textual form
with `sledge -c foo.bc.llair -o foo.llair`. Binary files are not
compatible between debug and release builds.
Reviewed By: mbouaziz
Differential Revision: D10389473
fbshipit-source-id: dfcabf33b
Summary:
Change the license of the source code from BSD + PATENTS to MIT.
Change `checkCopyright` to reflect the new license and learn some new file
types.
Generated with:
```
git grep BSD | xargs -n 1 ./scripts/checkCopyright -i
```
Reviewed By: jeremydubreil, mbouaziz, jberdine
Differential Revision: D8071249
fbshipit-source-id: 97ca23a
Summary:
Upgrade ocamlformat, and base which needs to be done in sync in order to build
ocamlformat, and the other deps can come for the ride.
Reviewed By: jvillard
Differential Revision: D7663537
fbshipit-source-id: 3e90970
Josh Berdine
Mehdi Bouaziz
Jules Villard