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This moves SmtEngine::setDefaults to its own file.
This design is not final. One could imagine this being a part of a "OptionsSetter" utility. I am leaving this as is until we refactor the relationship between SmtEngine and Options.
Regardless, the general file structure should be such that this method is separate from SmtEngine, since setting default options is a large task that should be addressed independently from the core of SmtEngine.
This is initial preparation towards converting the SmtEngine from Expr -> Node.
A few very minor changes were made to the code to make the separation possible.
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This commit adds code to count the number of inferences made of each
inference type for normal form inferences. It extends the Inference
enum in `infer_info.h` and adds two new `sendInference()` methods in the
`InferenceManager` to send and count inferences that have a corresonding
entry in the `Inference` enum.
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Organization towards theory of sequences.
The motivation of this PR is to ensure that string-specific operators in the rewriter are in their own file; thus the use of mkConst<String> / getConst<String> is allowable in rewriter_str.cpp.
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Towards theory of sequences. This separates out a virtual base class and utility class for the strings enumerator, which will be extended for sequences later.
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Done by:
Running rg 'smt_util/node_visitor' -l | xargs sed -i 's/smt_util\/node_visitor/expr\/node_visitor/' in src to change the #includes
Moving the file
Changing src/expr/CMakeLists.txt and src/CMakeLists.txt
clang-format, omitting node_visitor.h.
In reference to discussion, here.
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This never impacted performance positively. Fixes #3997 and fixes #4015.
There was a folder that the symmetry breaker was used on regress1/sym. These are simple examples that show when it is possible to find symmetries in SMT; the symmetry breaker is not critical for solving these. For now I'm leaving them as regressions documenting possible benchmarks to target if we revisit this technique.
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Fixes #4019.
This feature was never fully implemented.
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Fixes #3914. The pass was only applicable to inputs with UFs that were
exclusively applied to single integer values. This limitation seems to
make the preprocessing pass not very useful in practice and it is
subsumed by our Ackermannization pass, which can remove UFs from more
complex inputs. Thus, this commit removes the preprocessing pass.
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* Miscellaneous changes
* Removed unnecessary vector of enumerators
* cleanup
* cleanup
* cleanup
* refactoring
* cleanup
* refactoring
* used binary numbers for sets
* isFinished for enumerator
* format
* added theory_sets_type_enumerator_white.h
* format
* Used BitVector class
* Tracing
* Documentation
* moved implementation to theory_sets_type_enumerator.cpp
* minor changes
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This standardizes the interface for using SMT engines as subsolvers in various approaches. More refactoring is possible, but this is an initial cut at cleaning things up.
This will make it easy to accommodate new feature request for SyGuS (timeouts for calls to verification steps).
Notice this also required adding a missing function (mkGroundTerm/isWellFounded for functions) which was caught after standardizing due to an optimization (don't create SmtEngines to check satisfiability of constant Booleans).
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Fixes #3647.
Previously, when doing incremental linearization for transcedental functions, we would add points to the list of secant points at the time when linearization lemmas were generated. However, our strategy has been updated such that lemmas may be abandoned (say in the case that a higher priority lemma is found). Thus, our list of secant points had spurious points corresponding to lemmas that weren't sent. This led to assertion failures, and likely led to gaps in our linearization, hindering our ability to say sat/unsat.
This PR introduces a "lemma side effect" class to ensure that modifications to the state of the nonlinear solver are in sync with the lemmas we send out.
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Code move only, no updates to behavior or content of code in this PR.
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Commit 1c09572e0e2031519a103caa2a4af0d9bd34a9c5 removed the portfolio
build but there were some leftovers. This commit removes them.
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Introduces a preprocessing pass that translates bv problems to integer problems.
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This adds a utility file for handling operations over constant "words" (this will eventually generalize string or sequence constants). This is work towards CVC4/cvc4-projects#23.
Also improves documentation in regexp.h.
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This splits the main procedure from Liang et al CAV 2014 to its own file, the "core solver" of theory of strings.
I have intentionally not updated or clang-formatted the code in core_solver.cpp since I would prefer this PR to involve as little change to behavior as possible (it is copied verbatim from theory_strings.cpp). Future PRs will clean this code up.
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This adds interfaces in synth_conjecture for getting an ExampleEvalCache, per enumerator.
It also adds a specialization `checkRefinementEvalLemmas` of `getRefinementEvalLemmas` in the cegis module, which does evaluation on CEGIS refinement lemmas without structural generalization. This function will be used as an alternative to `getRefinementEvalLemmas` for fast enumerators.
The next PR will update all utilities to use ExampleEvalCache instead of SygusPbe for evaluating examples.
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This commit adds support for code generation of options with modes (enums). From now on option enums can be specified in the corresponding *.toml files without the need of extra code. All option enums are now in the options namespace.
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This commit changes theory rewriters to be non-static. This refactoring
is needed as a stepping stone to making our rewriter configurable: If we
have multiple solver objects with different rewrite configurations, we
cannot use `static` variables for the rewriter table in the BV rewriter
for example. It is also in line with our goal of getting rid of
singletons in general. Note that the `Rewriter` class is still a
singleton, which will be changed in a future commit.
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* Split arith util
* Cleaner
* cpp
* Format
* Minor
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This refactors the theory of strings to use a solver state object, which manages state information regarding assertions.
It also deletes some unused/undefined functions in theory_strings.h.
There are no major changes to the behavior of the code or its documentation in this PR.
This is work towards #1881.
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Fixes #2517.
This makes the order of theories explicit in the source code rather than relying on the order defined via the build system. Previously, the build system ensured the order of the theories via the KINDS_FILES variable, which is a list of kinds files that is fed to code generation scripts (mkkind, mkmetakind, mkrewriter, mktheorytraits). The generated code critical to the order of theories w.r.t. soundess is the TheoryId enum, and the CVC4_FOR_EACH_THEORY macro. Ideally, we would want to get rid of the latter (ugly and error prone), which is not possible in the current configuration, and to be discussed in the future.
This PR moves the TheoryID enum and related functions to theory/theory_id.h, and the CVC4_FOR_EACH_THEORY macro to theory/theory_engine.cpp, the only place where it is used.
I ran it on whole SMT-LIB (non-incremental and incremental) and did not encounter any soundness issues. The only issue that did occur is not related to these changes, non-critical and known: #2993
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The ackermannization process is currently already support general theories rather than specifically for BV. In this pull request, an option has been added to turn on ackermannization independently.
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