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feat: Allow interactive SMT-LIB input #949

Merged
merged 1 commit into from
Nov 17, 2023
Merged

feat: Allow interactive SMT-LIB input #949

merged 1 commit into from
Nov 17, 2023

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bclement-ocp
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Dolmen supports interactive SMT-LIB input on stdin, but we currently do not make use of it because we first read everything from stdin (awaiting a ^D end-of-file from the user), then pass that to Dolmen, making things useless for interactive input.

This patch makes it so that interactive input works properly (provided you also set --continue-on-error, and maybe redirect stderr to oblivion).

Note that Dolmen does not support reading from stdin in the native format, so we keep the old mode of operations if the user explicitly requested --input native. Otherwise, we default to SMT-LIB format when reading from stdin, and set the output format to SMT-LIB by default.

Changing the default format for stdin is not a breaking change because previously we were rejecting stdin input without an explicit format with an error:

Error The following extension was not recognized: ''.
Please use a recognised extension or specify an input language
on the command line

@bclement-ocp
feat: Allow interactive SMT-LIB input
d92b993 
Dolmen supports interactive SMT-LIB input on stdin, but we currently do
not make use of it because we *first* read everything from stdin
(awaiting a ^D end-of-file from the user), then pass that to Dolmen,
making things useless for interactive input.

This patch makes it so that interactive input works properly (provided
you also set `--continue-on-error`, and maybe redirect `stderr` to
oblivion).

Note that Dolmen does not support reading from `stdin` in the native
format, so we keep the old mode of operations if the user explicitly
requested `--input native`. Otherwise, we default to SMT-LIB format when
reading from stdin, and set the output format to SMT-LIB by default.

Changing the default format for stdin is not a breaking change because
previously we were rejecting stdin input without an explicit format with
an error:

> Error The following extension was not recognized: ''.
>      Please use a recognised extension or specify an input language \
on the command line
@Gbury
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Gbury commented Nov 17, 2023 •
edited
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Small precision: dolmen does not support interactive input for alt-ergo's native format because the syntax makes it impossible to support: it's not possible in ae's native language to know when a phrase/top-level declaration ends, except when another phrase begins (and thus the first token of the next phrase has already been consumed). It could theoretically be possible to use some tricks to save and restore that token, but that would exceptionally complicate the code, for probably little gain.

@Halbaroth
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I do agree we shouldn't support incremental mode for the native language.

@bclement-ocp
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Small precision: dolmen does not support interactive input for alt-ergo's native format because the syntax makes it impossible to support: it's not possible in ae's native language to know when a phrase/top-level declaration ends, except when another phrase begins (and thus the first token of the next phrase has already been consumed). It could theoretically be possible to use some tricks to save and restore that token, but that would exceptionally complicate the code, for probably little gain.

I don't expect Dolmen to support interactive input for Alt-Ergo's native format, but it could accept Alt-Ergo's native format from stdin in a non-interactive mode.

@bclement-ocp bclement-ocp merged commit 2f13bd6 into OCamlPro:next Nov 17, 2023
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@Gbury
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Gbury commented Nov 17, 2023

I don't expect Dolmen to support interactive input for Alt-Ergo's native format, but it could accept Alt-Ergo's native format from stdin in a non-interactive mode.

Feel free to open an issue about that on the github repo so that I remember to look at it when I have the time, ^^

@bclement-ocp bclement-ocp mentioned this pull request Nov 17, 2023
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@bclement-ocp bclement-ocp mentioned this pull request Jan 4, 2024
Closed
@bclement-ocp bclement-ocp deleted the bclement/stdinin branch January 23, 2024 08:49
@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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@bclement-ocp @Gbury @Halbaroth