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This is work towards making the initialization of theory engine, theory models, quantifiers engine more flexible.
This makes it so that the specialized quantifiers models classes (FirstOrderModel) do not inherit from TheoryModel. There is no longer any reason for this, since FirstOrderModel does not have any override methods.
As a result of this PR, there is only one kind of TheoryModel and it is constructed immediately when ModelManager is constructed.
This required refactoring the initialization of when FirstOrderModel is constructed in ModelBuilder classes in quantifiers.
This also avoids the need for casting TheoryModel to FirstOrderModel.
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Adds an instantiation strategy based on user-provided pool annotations.
The next PR will connect this to quantifiers engine.
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(#6240)
This completes eliminating dependencies on quantifiers engine from internal quantifiers code. It eliminates quantifiers_engine.h as an include from src/theory/quantifiers/ apart from theory_quantifiers.cpp where it is owned.
Followup PRs will further eliminate circular dependencies that arose will refactoring quantifiers engine.
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This makes it so that the decision manager is accessible from TheoryInferenceManager.
This is work towards breaking circular dependencies in quantifiers, and also helps simplify several other dependencies in e.g. UF and datatypes.
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Model is now nested into term registry.
This PR also resolves some complications due to namespaces within quantifiers.
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This is in preparation for breaking several circular dependencies and moving
the instantiate utility into the theory inference manager.
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This eliminates the need for direct references to TheoryEngine from quantifiers and UF+cardinality.
This PR also eliminates an unnecessary reference to TheoryEngine in TheoryModelBuilder and breaks a few more dependencies in quantifiers modules.
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This is a simple module for determining which quantifiers module has ownership of quantified formulas.
This is work towards eliminating dependencies of quantifiers modules.
Note that quantifiers attributes module (which no longer has a dependency on QuantifiersEngine after this PR) will be embedded into this module in a later PR.
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This is the second prerequisite for eliminating dependencies on quantifiers engine. This PR threads a quantifiers inference manager through all modules in quantifiers that add lemmas.
The code for adding lemmas in quantifiers engine will be migrated to this class.
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This is a step towards breaking up the quantifiers engine.
The key change is that QuantifiersEngine will not be passed as a pointer to the modules it contains. This PR makes it so that necessary modules take a QuantifiersState, which will eventually be extended as needed with additional query methods. For now, modules will take both until the dependencies on QuantifersEngine are removed.
This required that QuantifiersEngine now lives in TheoryQuantifiers, instead of in TheoryEngine, since the QuantifiersEngine must be initialized with QuantifiersState, which is a member of TheoryQuantifiers. Now, TheoryEngine retrieves the QuantifiersEngine from TheoryQuantifiers prior to finishing initialization on theories.
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This moves and renames the quantifiers engine private class to QuantifiersModules. This is in preparation for using a standard state and inference manager object in TheoryQuantifiers and QuantifiersEngine.
Initializing quantifiers engine is a bit non-standard since it is intentionally a separate entity from TheoryQuantifiers. However, the plan is for quantifiers engine to use the state and inference manager of TheoryQuantifiers.
This PR additionally moves the initialization of quantifiers modules to a QuantifiersEngine::finishInit() method. The motivation for is that we do not have a state and inference manager during construction of QuantifiersEngine, since these will live in TheoryQuantifiers and will be passed to QuantifiersEngine during TheoryQuantifiers::finishInit. This means that we need a final pass to initialize quantifiers engine after these are initialized, which thus must come as the last step of TheoryEngine::finishInit.
The next PR will connect the state and inference manager to QuantifiersEngine during TheoryQuantifiers::finishInit. Then, the plan is for many of the core utilities in QuantifiersEngine to migrate to state/inference manager, and finally for its modules to reference state and inference manager instead of QuantifiersEngine.
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