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Support delayed computation of partially interpreted functions #869

Merged
merged 1 commit into from
Oct 12, 2023
Merged

Support delayed computation of partially interpreted functions #869

merged 1 commit into from
Oct 12, 2023

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bclement-ocp
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This patch lifts the existing implementation in IntervalCalculus for delayed computation of the pow function (by "delayed computation" I mean that we remember pow terms with uninterpreted arguments and evaluate them once their arguments become interpreted). This is a generic way of integrating functions that we know how to compute but not necessarily how to reason about.

The patch is concerned about lifting the implementation for pow to a generic one and adds int2bv and bv2nat as delayed functions (with corresponding tests), but does not (yet) use it for other partially interpreted functions from the arithmetic theory (e.g. Modulo, Real_of_int, and the like); this will be done separately.

The implementation is placed in a new Rel_utils module that is intended to provide scaffolding for generic behavior (such as delayed computation) that can be useful for all relations. An alternative would be to support delayed computation in a fully generic way in the Relation module directly; providing the feature in Rel_utils is (slightly) simpler and keeps things more decoupled; the implementation can easily be moved to Relation later if we want to.

Fixes #801

Halbaroth
Halbaroth approved these changes Oct 12, 2023
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LGTM :)

src/lib/reasoners/rel_utils.ml Outdated
Note that we need to handle `CS` here to produce correct models,
but also this can cause eager enumeration, so we only use it when
model generation has been requested. *)
if X.is_constant r2 then
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We don't need to test X.is_constant r1 here as the equation Xliteral.Eq (r1, r2) is oriented and if one of its terms is constant, r2 is constant?

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Yeah, Subst and CS equalities are oriented. I will update the comment to clarify that fact.

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Turns out that CS equalities are oriented… except for those that come from the Arrays module, which are not even equalities but disequalities so we also need to handle NCS here. I have updated the code and stopped trying to be smart, both r1 and r2 are now updated in the CS and NCS case.

src/lib/reasoners/rel_utils.ml Outdated Show resolved Hide resolved
@bclement-ocp
Support delayed computation of partially interpreted functions
797cdf6 
This patch lifts the existing implementation in `IntervalCalculus` for
delayed computation of the `pow` function (by "delayed computation" I
mean that we remember `pow` terms with uninterpreted arguments and
evaluate them once their arguments become interpreted). This is a
generic way of integrating functions that we know how to compute but not
necessarily how to reason about.

The patch is concerned about lifting the implementation for `pow` to a
generic one and adds `int2bv` and `bv2nat` as delayed functions (with
corresponding tests), but does not (yet) use it for other partially
interpreted functions from the arithmetic theory (e.g. `Modulo`,
`Real_of_int`, and the like); this will be done separately.

The implementation is placed in a new `Rel_utils` module that is
intended to provide scaffolding for generic behavior (such as delayed
computation) that can be useful for all relations. An alternative would
be to support delayed computation in a fully generic way in the
`Relation` module directly; providing the feature in `Rel_utils` is
(slightly) simpler and keeps things more decoupled; the implementation
can easily be moved to `Relation` later if we want to.

Fixes OCamlPro#801
@bclement-ocp bclement-ocp merged commit ea79161 into OCamlPro:next Oct 12, 2023
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bclement-ocp added a commit to bclement-ocp/alt-ergo that referenced this pull request Jan 22, 2024
@bclement-ocp
fix(Shostak): names must return false for X.is_constant
5e68efe 
The `X.is_constant` function is intended to determine whether a semantic
value is a constant value (it is documented to be equivalent to having
an empty `X.leaves`). This invariant is relied upon by the code for
delayed computation in `Rel_utils` that it was introduced for in OCamlPro#869.
While the change only makes the delayed computation code less efficient,
it makes the `X.is_constant` function worthless for its original purpose
in planned patches.

The invariant was broken in OCamlPro#925 which causes `X.is_constant` to now
consider some terms (specifically, names, i.e. uninterpreted constants)
as constants, which is incorrect for the intended and documented purpose
of `X.is_constant` (uninterpreted constants have different values in
different context, they are thus not constant values).

This patch restores the original semantic of `X.is_constant` with
improved documentation, and removes the assertion introduced in OCamlPro#925
which seems to be the only incorrect use.
@bclement-ocp bclement-ocp mentioned this pull request Jan 22, 2024
Merged
@bclement-ocp bclement-ocp deleted the bclement/delayed branch January 23, 2024 08:24
Halbaroth pushed a commit that referenced this pull request Jan 23, 2024
@bclement-ocp
fix(Shostak): names must return false for X.is_constant (#1031)
607b93a 
The `X.is_constant` function is intended to determine whether a semantic
value is a constant value (it is documented to be equivalent to having
an empty `X.leaves`). This invariant is relied upon by the code for
delayed computation in `Rel_utils` that it was introduced for in #869.
While the change only makes the delayed computation code less efficient,
it makes the `X.is_constant` function worthless for its original purpose
in planned patches.

The invariant was broken in #925 which causes `X.is_constant` to now
consider some terms (specifically, names, i.e. uninterpreted constants)
as constants, which is incorrect for the intended and documented purpose
of `X.is_constant` (uninterpreted constants have different values in
different context, they are thus not constant values).

This patch restores the original semantic of `X.is_constant` with
improved documentation, and removes the assertion introduced in #925
which seems to be the only incorrect use.
@bclement-ocp bclement-ocp mentioned this pull request Sep 24, 2024
Merged
bclement-ocp added a commit to bclement-ocp/opam-repository that referenced this pull request Sep 24, 2024
@bclement-ocp
[new release] alt-ergo (4 packages) (2.6.0)
34f6b75 
CHANGES:

### Command-line interface

 - Enable FPA theory by default (OCamlPro/alt-ergo#1177)
 - Remove deprecated output channels (OCamlPro/alt-ergo#782)
 - Deprecate the --use-underscore since it produces models that are not SMT-LIB
   compliant (OCamlPro/alt-ergo#805)
 - Add --dump-models-on to dump models on a specific output channel (OCamlPro/alt-ergo#838)
 - Use consistent return codes (OCamlPro/alt-ergo#842)
 - Add --continue-on-error flag to set the SMT-LIB error behavior (OCamlPro/alt-ergo#853)
 - Make dolmen the default value for the --frontend option (OCamlPro/alt-ergo#857)
 - Restore functionality to broken `--profiling` option (OCamlPro/alt-ergo#947)
 - Add bare-bones support for interactive input in SMT-LIB format (OCamlPro/alt-ergo#949)
 - Less confusing behavior on timeout (OCamlPro/alt-ergo#982, OCamlPro/alt-ergo#984)
 - Add `--strict` option for SMT-LIB compliant mode (OCamlPro/alt-ergo#916, OCamlPro/alt-ergo#1133)
 - Deprecate `sum`, `typing` and `warnings` debug flags (OCamlPro/alt-ergo#1204)

### SMT-LIB support

 - Add support for the many new SMT-LIB commands (OCamlPro/alt-ergo#837, OCamlPro/alt-ergo#848, OCamlPro/alt-ergo#852, OCamlPro/alt-ergo#863, OCamlPro/alt-ergo#911,
   OCamlPro/alt-ergo#942, OCamlPro/alt-ergo#945, OCamlPro/alt-ergo#961, OCamlPro/alt-ergo#975, OCamlPro/alt-ergo#1069)
 - Expose the FPA rounding builtin in the SMT-LIB format (OCamlPro/alt-ergo#876, OCamlPro/alt-ergo#1135)
 - Allow changing the SAT solver using (set-option) (OCamlPro/alt-ergo#880)
 - Add support for the `:named` attribute (OCamlPro/alt-ergo#957)
 - Add support for quoted identifiers (OCamlPro/alt-ergo#909, OCamlPro/alt-ergo#972)
 - Add support for naming lemmas in SMT-LIB syntax (OCamlPro/alt-ergo#1141, OCamlPro/alt-ergo#1143)

### Model generation

 - Use post-solve SAT environment in model generation, fixing issues where
   incorrect models were generated (OCamlPro/alt-ergo#789)
 - Restore support for records in models (OCamlPro/alt-ergo#793)
 - Use abstract values instead of dummy values in models where the
   actual value does not matter (OCamlPro/alt-ergo#804, OCamlPro/alt-ergo#835)
 - Use fresh names for all abstract values to prevent accidental captures (OCamlPro/alt-ergo#811)
 - Add support for model generation with the default CDCL solver (OCamlPro/alt-ergo#829)
 - Support model generation for the BV theory (OCamlPro/alt-ergo#841, OCamlPro/alt-ergo#968)
 - Add support for optimization (MaxSMT / OptiSMT) with
   lexicographic Int and Real objectives (OCamlPro/alt-ergo#861, OCamlPro/alt-ergo#921)
 - Add a SMT-LIB printer for expressions (OCamlPro/alt-ergo#952, OCamlPro/alt-ergo#981, OCamlPro/alt-ergo#1082, OCamlPro/alt-ergo#931, OCamlPro/alt-ergo#932)
 - Ensure models have a value for all constants in the problem (OCamlPro/alt-ergo#1019)
 - Fix a rare soundness issue with integer constraints when model generation is
   enabled (OCamlPro/alt-ergo#1025)
 - Support model generation for the ADT theory (OCamlPro/alt-ergo#1093, OCamlPro/alt-ergo#1153)

### Theory reasoning

 - Add word-level propagators for the BV theory (OCamlPro/alt-ergo#944, OCamlPro/alt-ergo#1004, OCamlPro/alt-ergo#1007, OCamlPro/alt-ergo#1010,
   OCamlPro/alt-ergo#1011, OCamlPro/alt-ergo#1012, OCamlPro/alt-ergo#1040, OCamlPro/alt-ergo#1044, OCamlPro/alt-ergo#1054, OCamlPro/alt-ergo#1055, OCamlPro/alt-ergo#1056, OCamlPro/alt-ergo#1057, OCamlPro/alt-ergo#1065, OCamlPro/alt-ergo#1073, OCamlPro/alt-ergo#1144,
   OCamlPro/alt-ergo#1152)
 - Add interval domains and arithmetic propagators for the BV theory (OCamlPro/alt-ergo#1058,
   OCamlPro/alt-ergo#1083, OCamlPro/alt-ergo#1084, OCamlPro/alt-ergo#1085)
 - Native support for bv2nat of bit-vector normal forms (OCamlPro/alt-ergo#1154)
 - Fix incompleteness issues in the BV solver (OCamlPro/alt-ergo#978, OCamlPro/alt-ergo#979)
 - Abstract more arguments of AC symbols to avoid infinite loops when
   they contain other AC symbols (OCamlPro/alt-ergo#990)
 - Do not make irrelevant decisions in CDCL solver, improving
   performance slightly (OCamlPro/alt-ergo#1041)
 - Rewrite the ADT theory to use domains and integrate the enum theory into the
   ADT theory (OCamlPro/alt-ergo#1078, OCamlPro/alt-ergo#1086, OCamlPro/alt-ergo#1087, OCamlPro/alt-ergo#1091, OCamlPro/alt-ergo#1094, OCamlPro/alt-ergo#1138)
 - Rewrite the Intervals module entirely (OCamlPro/alt-ergo#1108)
 - Add maximize/minimize terms for matching (OCamlPro/alt-ergo#1166)
 - Internalize `sign_extend` and `repeat` (OCamlPro/alt-ergo#1192)
 - Run cross-propagators to completion (OCamlPro/alt-ergo#1221)
 - Support binary distinct on arbitrary bit-widths (OCamlPro/alt-ergo#1222)
 - Only perform optimization when building a model (OCamlPro/alt-ergo#1224)
 - Make sure domains do not overflow the default domain (OCamlPro/alt-ergo#1225)
 - Do not build unnormalized values in `zero_extend` (OCamlPro/alt-ergo#1226)

### Internal/library changes

 - Rewrite the Vec module (OCamlPro/alt-ergo#607)
 - Move printer definitions closer to type definitions (OCamlPro/alt-ergo#808)
 - Mark proxy names as reserved (OCamlPro/alt-ergo#836)
 - Use a Zarith-based representation for numbers and bit-vectors (OCamlPro/alt-ergo#850, OCamlPro/alt-ergo#943)
 - Add native support for (bvnot) in the BV solver (OCamlPro/alt-ergo#856)
 - Add constant propagators for partially interpreted functions (OCamlPro/alt-ergo#869)
 - Remove `Util.failwith` in favor of `Fmt.failwith` (OCamlPro/alt-ergo#872)
 - Add more `Expr` smart constructors (OCamlPro/alt-ergo#877, OCamlPro/alt-ergo#878)
 - Do not use existential variables for integer division (OCamlPro/alt-ergo#881)
 - Preserve `Subst` literals to prevent accidental incompleteness (OCamlPro/alt-ergo#886)
 - Properly start timers (OCamlPro/alt-ergo#924)
 - Compute a concrete representation of a model instead of performing (OCamlPro/alt-ergo#925)
 - Allow direct access to the SAT API in the Alt-Ergo library computations
   during printing (OCamlPro/alt-ergo#927)
 - Better handling for step limit (OCamlPro/alt-ergo#936)
 - Add a generic option manager to deal with the dolmen state (OCamlPro/alt-ergo#951)
 - Expose an imperative SAT API in the Alt-Ergo library (OCamlPro/alt-ergo#962)
 - Keep track of the SMT-LIB mode (OCamlPro/alt-ergo#971)
 - Add ability to decide on semantic literals (OCamlPro/alt-ergo#1027, OCamlPro/alt-ergo#1118)
 - Preserve trigger order when parsing quantifiers with multiple trigger
   (OCamlPro/alt-ergo#1046).
 - Store domains inside the union-find module (OCamlPro/alt-ergo#1119)
 - Remove some polymorphic hashtables (OCamlPro/alt-ergo#1219)

### Build and integration

 - Drop support for OCaml <4.08.1 (OCamlPro/alt-ergo#803)
 - Use dune-site for the inequalities plugins. External pluginsm ust now be
   registered through the dune-site plugin mechanism in the
   `(alt-ergo plugins)` site to be picked up by Alt-Ergo (OCamlPro/alt-ergo#1049).
 - Add a release workflow (OCamlPro/alt-ergo#827)
 - Add a Windows workflow (OCamlPro/alt-ergo#1203)
 - Mark the dune.inc file as linguist-generated to avoid huge diffs (OCamlPro/alt-ergo#830)
 - Use GitHub Actions badges in the README (OCamlPro/alt-ergo#882)
 - Use `dune build @check` to build the project (OCamlPro/alt-ergo#887)
 - Enable warnings as errors on the CI (OCamlPro/alt-ergo#888)
 - Uniformization of internal identifiers generation (OCamlPro/alt-ergo#905, OCamlPro/alt-ergo#918)
 - Use an efficient `String.starts_with` implementation (OCamlPro/alt-ergo#912)
 - Fix the Makefile (OCamlPro/alt-ergo#914)
 - Add `Logs` dependency (OCamlPro/alt-ergo#1206)
 - Use `dynamic_include` to include the generated file `dune.inc` (OCamlPro/alt-ergo#1199)
 - Support Windows (OCamlPro/alt-ergo#1184,OCamlPro/alt-ergo#1189,OCamlPro/alt-ergo#1195,OCamlPro/alt-ergo#1199,OCamlPro/alt-ergo#1200)
 - Wrap the library `Alt_ergo_prelude` (OCamlPro/alt-ergo#1223)

### Testing

 - Use --enable-assertions in tests (OCamlPro/alt-ergo#809)
 - Add a test for push/pop (OCamlPro/alt-ergo#843)
 - Use the CDCL solver when testing model generation (OCamlPro/alt-ergo#938)
 - Do not test .smt2 files with the legacy frontend (OCamlPro/alt-ergo#939)
 - Restore automatic creation of .expected files (OCamlPro/alt-ergo#941)

### Documentation

 - Add a new example for model generation (OCamlPro/alt-ergo#826)
 - Add a Pygments lexer for the Alt-Ergo native language (OCamlPro/alt-ergo#862)
 - Update the current authors (OCamlPro/alt-ergo#865)
 - Documentation of the `Enum` theory (OCamlPro/alt-ergo#871)
 - Document `Th_util.lit_origin` (OCamlPro/alt-ergo#915)
 - Document the CDCL-Tableaux solver (OCamlPro/alt-ergo#995)
 - Document Windows support (OCamlPro/alt-ergo#1216)
 - Remove instructions to install Alt-Ergo on Debian (OCamlPro/alt-ergo#1217)
 - Document optimization feature (OCamlPro/alt-ergo#1231)
tjammer pushed a commit to tjammer/opam-repository that referenced this pull request Sep 24, 2024
@bclement-ocp @tjammer
[new release] alt-ergo (4 packages) (2.6.0)
30afd8b 
CHANGES:

### Command-line interface

 - Enable FPA theory by default (OCamlPro/alt-ergo#1177)
 - Remove deprecated output channels (OCamlPro/alt-ergo#782)
 - Deprecate the --use-underscore since it produces models that are not SMT-LIB
   compliant (OCamlPro/alt-ergo#805)
 - Add --dump-models-on to dump models on a specific output channel (OCamlPro/alt-ergo#838)
 - Use consistent return codes (OCamlPro/alt-ergo#842)
 - Add --continue-on-error flag to set the SMT-LIB error behavior (OCamlPro/alt-ergo#853)
 - Make dolmen the default value for the --frontend option (OCamlPro/alt-ergo#857)
 - Restore functionality to broken `--profiling` option (OCamlPro/alt-ergo#947)
 - Add bare-bones support for interactive input in SMT-LIB format (OCamlPro/alt-ergo#949)
 - Less confusing behavior on timeout (OCamlPro/alt-ergo#982, OCamlPro/alt-ergo#984)
 - Add `--strict` option for SMT-LIB compliant mode (OCamlPro/alt-ergo#916, OCamlPro/alt-ergo#1133)
 - Deprecate `sum`, `typing` and `warnings` debug flags (OCamlPro/alt-ergo#1204)

### SMT-LIB support

 - Add support for the many new SMT-LIB commands (OCamlPro/alt-ergo#837, OCamlPro/alt-ergo#848, OCamlPro/alt-ergo#852, OCamlPro/alt-ergo#863, OCamlPro/alt-ergo#911,
   OCamlPro/alt-ergo#942, OCamlPro/alt-ergo#945, OCamlPro/alt-ergo#961, OCamlPro/alt-ergo#975, OCamlPro/alt-ergo#1069)
 - Expose the FPA rounding builtin in the SMT-LIB format (OCamlPro/alt-ergo#876, OCamlPro/alt-ergo#1135)
 - Allow changing the SAT solver using (set-option) (OCamlPro/alt-ergo#880)
 - Add support for the `:named` attribute (OCamlPro/alt-ergo#957)
 - Add support for quoted identifiers (OCamlPro/alt-ergo#909, OCamlPro/alt-ergo#972)
 - Add support for naming lemmas in SMT-LIB syntax (OCamlPro/alt-ergo#1141, OCamlPro/alt-ergo#1143)

### Model generation

 - Use post-solve SAT environment in model generation, fixing issues where
   incorrect models were generated (OCamlPro/alt-ergo#789)
 - Restore support for records in models (OCamlPro/alt-ergo#793)
 - Use abstract values instead of dummy values in models where the
   actual value does not matter (OCamlPro/alt-ergo#804, OCamlPro/alt-ergo#835)
 - Use fresh names for all abstract values to prevent accidental captures (OCamlPro/alt-ergo#811)
 - Add support for model generation with the default CDCL solver (OCamlPro/alt-ergo#829)
 - Support model generation for the BV theory (OCamlPro/alt-ergo#841, OCamlPro/alt-ergo#968)
 - Add support for optimization (MaxSMT / OptiSMT) with
   lexicographic Int and Real objectives (OCamlPro/alt-ergo#861, OCamlPro/alt-ergo#921)
 - Add a SMT-LIB printer for expressions (OCamlPro/alt-ergo#952, OCamlPro/alt-ergo#981, OCamlPro/alt-ergo#1082, OCamlPro/alt-ergo#931, OCamlPro/alt-ergo#932)
 - Ensure models have a value for all constants in the problem (OCamlPro/alt-ergo#1019)
 - Fix a rare soundness issue with integer constraints when model generation is
   enabled (OCamlPro/alt-ergo#1025)
 - Support model generation for the ADT theory (OCamlPro/alt-ergo#1093, OCamlPro/alt-ergo#1153)

### Theory reasoning

 - Add word-level propagators for the BV theory (OCamlPro/alt-ergo#944, OCamlPro/alt-ergo#1004, OCamlPro/alt-ergo#1007, OCamlPro/alt-ergo#1010,
   OCamlPro/alt-ergo#1011, OCamlPro/alt-ergo#1012, OCamlPro/alt-ergo#1040, OCamlPro/alt-ergo#1044, OCamlPro/alt-ergo#1054, OCamlPro/alt-ergo#1055, OCamlPro/alt-ergo#1056, OCamlPro/alt-ergo#1057, OCamlPro/alt-ergo#1065, OCamlPro/alt-ergo#1073, OCamlPro/alt-ergo#1144,
   OCamlPro/alt-ergo#1152)
 - Add interval domains and arithmetic propagators for the BV theory (OCamlPro/alt-ergo#1058,
   OCamlPro/alt-ergo#1083, OCamlPro/alt-ergo#1084, OCamlPro/alt-ergo#1085)
 - Native support for bv2nat of bit-vector normal forms (OCamlPro/alt-ergo#1154)
 - Fix incompleteness issues in the BV solver (OCamlPro/alt-ergo#978, OCamlPro/alt-ergo#979)
 - Abstract more arguments of AC symbols to avoid infinite loops when
   they contain other AC symbols (OCamlPro/alt-ergo#990)
 - Do not make irrelevant decisions in CDCL solver, improving
   performance slightly (OCamlPro/alt-ergo#1041)
 - Rewrite the ADT theory to use domains and integrate the enum theory into the
   ADT theory (OCamlPro/alt-ergo#1078, OCamlPro/alt-ergo#1086, OCamlPro/alt-ergo#1087, OCamlPro/alt-ergo#1091, OCamlPro/alt-ergo#1094, OCamlPro/alt-ergo#1138)
 - Rewrite the Intervals module entirely (OCamlPro/alt-ergo#1108)
 - Add maximize/minimize terms for matching (OCamlPro/alt-ergo#1166)
 - Internalize `sign_extend` and `repeat` (OCamlPro/alt-ergo#1192)
 - Run cross-propagators to completion (OCamlPro/alt-ergo#1221)
 - Support binary distinct on arbitrary bit-widths (OCamlPro/alt-ergo#1222)
 - Only perform optimization when building a model (OCamlPro/alt-ergo#1224)
 - Make sure domains do not overflow the default domain (OCamlPro/alt-ergo#1225)
 - Do not build unnormalized values in `zero_extend` (OCamlPro/alt-ergo#1226)

### Internal/library changes

 - Rewrite the Vec module (OCamlPro/alt-ergo#607)
 - Move printer definitions closer to type definitions (OCamlPro/alt-ergo#808)
 - Mark proxy names as reserved (OCamlPro/alt-ergo#836)
 - Use a Zarith-based representation for numbers and bit-vectors (OCamlPro/alt-ergo#850, OCamlPro/alt-ergo#943)
 - Add native support for (bvnot) in the BV solver (OCamlPro/alt-ergo#856)
 - Add constant propagators for partially interpreted functions (OCamlPro/alt-ergo#869)
 - Remove `Util.failwith` in favor of `Fmt.failwith` (OCamlPro/alt-ergo#872)
 - Add more `Expr` smart constructors (OCamlPro/alt-ergo#877, OCamlPro/alt-ergo#878)
 - Do not use existential variables for integer division (OCamlPro/alt-ergo#881)
 - Preserve `Subst` literals to prevent accidental incompleteness (OCamlPro/alt-ergo#886)
 - Properly start timers (OCamlPro/alt-ergo#924)
 - Compute a concrete representation of a model instead of performing (OCamlPro/alt-ergo#925)
 - Allow direct access to the SAT API in the Alt-Ergo library computations
   during printing (OCamlPro/alt-ergo#927)
 - Better handling for step limit (OCamlPro/alt-ergo#936)
 - Add a generic option manager to deal with the dolmen state (OCamlPro/alt-ergo#951)
 - Expose an imperative SAT API in the Alt-Ergo library (OCamlPro/alt-ergo#962)
 - Keep track of the SMT-LIB mode (OCamlPro/alt-ergo#971)
 - Add ability to decide on semantic literals (OCamlPro/alt-ergo#1027, OCamlPro/alt-ergo#1118)
 - Preserve trigger order when parsing quantifiers with multiple trigger
   (OCamlPro/alt-ergo#1046).
 - Store domains inside the union-find module (OCamlPro/alt-ergo#1119)
 - Remove some polymorphic hashtables (OCamlPro/alt-ergo#1219)

### Build and integration

 - Drop support for OCaml <4.08.1 (OCamlPro/alt-ergo#803)
 - Use dune-site for the inequalities plugins. External pluginsm ust now be
   registered through the dune-site plugin mechanism in the
   `(alt-ergo plugins)` site to be picked up by Alt-Ergo (OCamlPro/alt-ergo#1049).
 - Add a release workflow (OCamlPro/alt-ergo#827)
 - Add a Windows workflow (OCamlPro/alt-ergo#1203)
 - Mark the dune.inc file as linguist-generated to avoid huge diffs (OCamlPro/alt-ergo#830)
 - Use GitHub Actions badges in the README (OCamlPro/alt-ergo#882)
 - Use `dune build @check` to build the project (OCamlPro/alt-ergo#887)
 - Enable warnings as errors on the CI (OCamlPro/alt-ergo#888)
 - Uniformization of internal identifiers generation (OCamlPro/alt-ergo#905, OCamlPro/alt-ergo#918)
 - Use an efficient `String.starts_with` implementation (OCamlPro/alt-ergo#912)
 - Fix the Makefile (OCamlPro/alt-ergo#914)
 - Add `Logs` dependency (OCamlPro/alt-ergo#1206)
 - Use `dynamic_include` to include the generated file `dune.inc` (OCamlPro/alt-ergo#1199)
 - Support Windows (OCamlPro/alt-ergo#1184,OCamlPro/alt-ergo#1189,OCamlPro/alt-ergo#1195,OCamlPro/alt-ergo#1199,OCamlPro/alt-ergo#1200)
 - Wrap the library `Alt_ergo_prelude` (OCamlPro/alt-ergo#1223)

### Testing

 - Use --enable-assertions in tests (OCamlPro/alt-ergo#809)
 - Add a test for push/pop (OCamlPro/alt-ergo#843)
 - Use the CDCL solver when testing model generation (OCamlPro/alt-ergo#938)
 - Do not test .smt2 files with the legacy frontend (OCamlPro/alt-ergo#939)
 - Restore automatic creation of .expected files (OCamlPro/alt-ergo#941)

### Documentation

 - Add a new example for model generation (OCamlPro/alt-ergo#826)
 - Add a Pygments lexer for the Alt-Ergo native language (OCamlPro/alt-ergo#862)
 - Update the current authors (OCamlPro/alt-ergo#865)
 - Documentation of the `Enum` theory (OCamlPro/alt-ergo#871)
 - Document `Th_util.lit_origin` (OCamlPro/alt-ergo#915)
 - Document the CDCL-Tableaux solver (OCamlPro/alt-ergo#995)
 - Document Windows support (OCamlPro/alt-ergo#1216)
 - Remove instructions to install Alt-Ergo on Debian (OCamlPro/alt-ergo#1217)
 - Document optimization feature (OCamlPro/alt-ergo#1231)
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@Halbaroth Halbaroth Halbaroth approved these changes

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Improve behavior of mod, int2bv, bv2nat, etc. when called on non-constant terms
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@bclement-ocp @Halbaroth