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/******************************************************************************
* Top contributors (to current version):
* Andrew Reynolds
*
* This file is part of the cvc5 project.
*
* Copyright (c) 2009-2021 by the authors listed in the file AUTHORS
* in the top-level source directory and their institutional affiliations.
* All rights reserved. See the file COPYING in the top-level source
* directory for licensing information.
* ****************************************************************************
*
* Management of a distributed approach for model generation.
*/
#include "theory/model_manager_distributed.h"
#include "theory/theory_engine.h"
#include "theory/theory_model.h"
#include "theory/theory_model_builder.h"
namespace cvc5 {
namespace theory {
ModelManagerDistributed::ModelManagerDistributed(TheoryEngine& te,
EqEngineManager& eem)
: ModelManager(te, eem)
{
}
ModelManagerDistributed::~ModelManagerDistributed()
{
// pop the model context which we pushed on initialization
d_modelEeContext.pop();
}
void ModelManagerDistributed::initializeModelEqEngine(
eq::EqualityEngineNotify* notify)
{
// initialize the model equality engine, use the provided notification object,
// which belongs e.g. to CombinationModelBased
EeSetupInfo esim;
esim.d_notify = notify;
esim.d_name = d_model->getName() + "::ee";
esim.d_constantsAreTriggers = false;
d_modelEqualityEngineAlloc.reset(
d_eem.allocateEqualityEngine(esim, &d_modelEeContext));
d_modelEqualityEngine = d_modelEqualityEngineAlloc.get();
// finish initializing the model
d_model->finishInit(d_modelEqualityEngine);
// We push a context during initialization since the model is cleared during
// collectModelInfo using pop/push.
d_modelEeContext.push();
}
bool ModelManagerDistributed::prepareModel()
{
Trace("model-builder") << "ModelManagerDistributed: reset model..."
<< std::endl;
// push/pop to clear the equality engine of the model
d_modelEeContext.pop();
d_modelEeContext.push();
// Collect model info from the theories
Trace("model-builder") << "ModelManagerDistributed: Collect model info..."
<< std::endl;
// Consult each active theory to get all relevant information concerning the
// model, which includes both dump their equality information and assigning
// values. Notice the order of theories here is important and is the same
// as the list in CVC5_FOR_EACH_THEORY in theory_engine.cpp.
for (TheoryId theoryId = theory::THEORY_FIRST; theoryId < theory::THEORY_LAST;
++theoryId)
{
if (!d_logicInfo.isTheoryEnabled(theoryId))
{
// theory not active, skip
continue;
}
Theory* t = d_te.theoryOf(theoryId);
Trace("model-builder") << " CollectModelInfo on theory: " << theoryId
<< std::endl;
// collect the asserted terms
std::set<Node> termSet;
collectAssertedTerms(theoryId, termSet);
// also get relevant terms
t->computeRelevantTerms(termSet);
if (!t->collectModelInfo(d_model.get(), termSet))
{
Trace("model-builder")
<< "ModelManagerDistributed: fail collect model info" << std::endl;
return false;
}
}
if (!collectModelBooleanVariables())
{
Trace("model-builder") << "ModelManagerDistributed: fail Boolean variables"
<< std::endl;
return false;
}
return true;
}
bool ModelManagerDistributed::finishBuildModel() const
{
// do not use relevant terms
if (!d_modelBuilder->buildModel(d_model.get()))
{
Trace("model-builder") << "ModelManager: fail build model" << std::endl;
return false;
}
return true;
}
} // namespace theory
} // namespace cvc5
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