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GCC Code Coverage Report

Directory:	.		Exec	Total	Coverage
File:	src/theory/model_manager.cpp	Lines:	65	72	90.3 %
Date:	2021-11-07	Branches:	78	186	41.9 %


/******************************************************************************
 * 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.
 * ****************************************************************************
 *
 * Abstract management of models for TheoryEngine.
 */

#include "theory/model_manager.h"

#include "options/smt_options.h"
#include "options/theory_options.h"
#include "prop/prop_engine.h"
#include "smt/env.h"
#include "theory/quantifiers/first_order_model.h"
#include "theory/quantifiers/fmf/model_builder.h"
#include "theory/quantifiers_engine.h"
#include "theory/theory_engine.h"

namespace cvc5 {
namespace theory {

ModelManager::ModelManager(Env& env, TheoryEngine& te, EqEngineManager& eem)
    : EnvObj(env),
      d_te(te),
      d_eem(eem),
      d_modelEqualityEngine(nullptr),
      d_modelEqualityEngineAlloc(nullptr),
      d_model(new TheoryModel(
          env, "DefaultModel", options().theory.assignFunctionValues)),
      d_modelBuilder(nullptr),
      d_modelBuilt(false),
      d_modelBuiltSuccess(false)
{
}

ModelManager::~ModelManager() {}

void ModelManager::finishInit(eq::EqualityEngineNotify* notify)
{
  // construct the model
  // Initialize the model and model builder.
  if (logicInfo().isQuantified())
  {
    QuantifiersEngine* qe = d_te.getQuantifiersEngine();
    Assert(qe != nullptr);
    d_modelBuilder = qe->getModelBuilder();
  }

  // make the default builder, e.g. in the case that the quantifiers engine does
  // not have a model builder
  if (d_modelBuilder == nullptr)
  {
    d_alocModelBuilder.reset(new TheoryEngineModelBuilder(d_env));
    d_modelBuilder = d_alocModelBuilder.get();
  }
  // notice that the equality engine of the model has yet to be assigned.
  initializeModelEqEngine(notify);
}

void ModelManager::resetModel()
{
  d_modelBuilt = false;
  d_modelBuiltSuccess = false;
  // Reset basic information on the model object
  d_model->reset();
}

bool ModelManager::buildModel()
{
  if (d_modelBuilt)
  {
    // already computed
    return d_modelBuiltSuccess;
  }
  // reset the flags now
  d_modelBuilt = true;
  d_modelBuiltSuccess = false;

  // prepare the model, which is specific to the manager
  if (!prepareModel())
  {
    Trace("model-builder") << "ModelManager: fail prepare model" << std::endl;
    return false;
  }

  // now, finish building the model
  d_modelBuiltSuccess = finishBuildModel();

  if (Trace.isOn("model-final"))
  {
    Trace("model-final") << "Final model:" << std::endl;
    Trace("model-final") << d_model->debugPrintModelEqc() << std::endl;
  }

  Trace("model-builder") << "ModelManager: model built success is "
                         << d_modelBuiltSuccess << std::endl;

  return d_modelBuiltSuccess;
}

bool ModelManager::isModelBuilt() const { return d_modelBuilt; }

void ModelManager::postProcessModel(bool incomplete)
{
  if (!d_modelBuilt)
  {
    // model not built, nothing to do
    return;
  }
  Trace("model-builder") << "ModelManager: post-process model..." << std::endl;
  // model construction should always succeed unless lemmas were added
  AlwaysAssert(d_modelBuiltSuccess);
  if (!options().smt.produceModels)
  {
    return;
  }
  // Do post-processing of model from the theories (used for THEORY_SEP
  // to construct heap model)
  for (TheoryId theoryId = theory::THEORY_FIRST; theoryId < theory::THEORY_LAST;
       ++theoryId)
  {
    Theory* t = d_te.theoryOf(theoryId);
    if (t == nullptr)
    {
      // theory not active, skip
      continue;
    }
    Trace("model-builder-debug")
        << "  PostProcessModel on theory: " << theoryId << std::endl;
    t->postProcessModel(d_model.get());
  }
  // also call the model builder's post-process model
  d_modelBuilder->postProcessModel(incomplete, d_model.get());
}

theory::TheoryModel* ModelManager::getModel() { return d_model.get(); }

bool ModelManager::collectModelBooleanVariables()
{
  Trace("model-builder") << "  CollectModelInfo boolean variables" << std::endl;
  // Get value of the Boolean variables
  prop::PropEngine* propEngine = d_te.getPropEngine();
  std::vector<TNode> boolVars;
  propEngine->getBooleanVariables(boolVars);
  std::vector<TNode>::iterator it, iend = boolVars.end();
  bool hasValue, value;
  for (it = boolVars.begin(); it != iend; ++it)
  {
    TNode var = *it;
    hasValue = propEngine->hasValue(var, value);
    // Should we assert that hasValue is true?
    if (!hasValue)
    {
      Trace("model-builder-assertions")
          << "    has no value : " << var << std::endl;
      value = false;
    }
    Trace("model-builder-assertions")
        << "(assert" << (value ? " " : " (not ") << var
        << (value ? ");" : "));") << std::endl;
    if (!d_model->assertPredicate(var, value))
    {
      return false;
    }
  }
  return true;
}

}  // namespace theory
}  // namespace cvc5


Generated by: GCOVR (Version 3.2)

Line	Exec	Source
1		/******************************************************************************
2		* Top contributors (to current version):
3		* Andrew Reynolds
4		*
5		* This file is part of the cvc5 project.
6		*
7		* Copyright (c) 2009-2021 by the authors listed in the file AUTHORS
8		* in the top-level source directory and their institutional affiliations.
9		* All rights reserved. See the file COPYING in the top-level source
10		* directory for licensing information.
11		* ****************************************************************************
12		*
13		* Abstract management of models for TheoryEngine.
14		*/
15
16		#include "theory/model_manager.h"
17
18		#include "options/smt_options.h"
19		#include "options/theory_options.h"
20		#include "prop/prop_engine.h"
21		#include "smt/env.h"
22		#include "theory/quantifiers/first_order_model.h"
23		#include "theory/quantifiers/fmf/model_builder.h"
24		#include "theory/quantifiers_engine.h"
25		#include "theory/theory_engine.h"
26
27		namespace cvc5 {
28		namespace theory {
29
30	15273	ModelManager::ModelManager(Env& env, TheoryEngine& te, EqEngineManager& eem)
31		: EnvObj(env),
32		d_te(te),
33		d_eem(eem),
34		d_modelEqualityEngine(nullptr),
35		d_modelEqualityEngineAlloc(nullptr),
36		d_model(new TheoryModel(
37	15273	env, "DefaultModel", options().theory.assignFunctionValues)),
38		d_modelBuilder(nullptr),
39		d_modelBuilt(false),
40	30546	d_modelBuiltSuccess(false)
41		{
42	15273	}
43
44	15268	ModelManager::~ModelManager() {}
45
46	15273	void ModelManager::finishInit(eq::EqualityEngineNotify* notify)
47		{
48		// construct the model
49		// Initialize the model and model builder.
50	15273	if (logicInfo().isQuantified())
51		{
52	12150	QuantifiersEngine* qe = d_te.getQuantifiersEngine();
53	12150	Assert(qe != nullptr);
54	12150	d_modelBuilder = qe->getModelBuilder();
55		}
56
57		// make the default builder, e.g. in the case that the quantifiers engine does
58		// not have a model builder
59	15273	if (d_modelBuilder == nullptr)
60		{
61	3123	d_alocModelBuilder.reset(new TheoryEngineModelBuilder(d_env));
62	3123	d_modelBuilder = d_alocModelBuilder.get();
63		}
64		// notice that the equality engine of the model has yet to be assigned.
65	15273	initializeModelEqEngine(notify);
66	15273	}
67
68	29793	void ModelManager::resetModel()
69		{
70	29793	d_modelBuilt = false;
71	29793	d_modelBuiltSuccess = false;
72		// Reset basic information on the model object
73	29793	d_model->reset();
74	29793	}
75
76	45497	bool ModelManager::buildModel()
77		{
78	45497	if (d_modelBuilt)
79		{
80		// already computed
81	20507	return d_modelBuiltSuccess;
82		}
83		// reset the flags now
84	24990	d_modelBuilt = true;
85	24990	d_modelBuiltSuccess = false;
86
87		// prepare the model, which is specific to the manager
88	24990	if (!prepareModel())
89		{
90		Trace("model-builder") << "ModelManager: fail prepare model" << std::endl;
91		return false;
92		}
93
94		// now, finish building the model
95	24989	d_modelBuiltSuccess = finishBuildModel();
96
97	24989	if (Trace.isOn("model-final"))
98		{
99		Trace("model-final") << "Final model:" << std::endl;
100		Trace("model-final") << d_model->debugPrintModelEqc() << std::endl;
101		}
102
103	49978	Trace("model-builder") << "ModelManager: model built success is "
104	24989	<< d_modelBuiltSuccess << std::endl;
105
106	24989	return d_modelBuiltSuccess;
107		}
108
109		bool ModelManager::isModelBuilt() const { return d_modelBuilt; }
110
111	9679	void ModelManager::postProcessModel(bool incomplete)
112		{
113	9679	if (!d_modelBuilt)
114		{
115		// model not built, nothing to do
116	8476	return;
117		}
118	1203	Trace("model-builder") << "ModelManager: post-process model..." << std::endl;
119		// model construction should always succeed unless lemmas were added
120	1203	AlwaysAssert(d_modelBuiltSuccess);
121	1203	if (!options().smt.produceModels)
122		{
123	392	return;
124		}
125		// Do post-processing of model from the theories (used for THEORY_SEP
126		// to construct heap model)
127	11354	for (TheoryId theoryId = theory::THEORY_FIRST; theoryId < theory::THEORY_LAST;
128		++theoryId)
129		{
130	10543	Theory* t = d_te.theoryOf(theoryId);
131	10543	if (t == nullptr)
132		{
133		// theory not active, skip
134		continue;
135		}
136	21086	Trace("model-builder-debug")
137	10543	<< " PostProcessModel on theory: " << theoryId << std::endl;
138	10543	t->postProcessModel(d_model.get());
139		}
140		// also call the model builder's post-process model
141	811	d_modelBuilder->postProcessModel(incomplete, d_model.get());
142		}
143
144	18218494	theory::TheoryModel* ModelManager::getModel() { return d_model.get(); }
145
146	24989	bool ModelManager::collectModelBooleanVariables()
147		{
148	24989	Trace("model-builder") << " CollectModelInfo boolean variables" << std::endl;
149		// Get value of the Boolean variables
150	24989	prop::PropEngine* propEngine = d_te.getPropEngine();
151	49978	std::vector<TNode> boolVars;
152	24989	propEngine->getBooleanVariables(boolVars);
153	24989	std::vector<TNode>::iterator it, iend = boolVars.end();
154		bool hasValue, value;
155	83114	for (it = boolVars.begin(); it != iend; ++it)
156		{
157	116250	TNode var = *it;
158	58125	hasValue = propEngine->hasValue(var, value);
159		// Should we assert that hasValue is true?
160	58125	if (!hasValue)
161		{
162	23836	Trace("model-builder-assertions")
163	11918	<< " has no value : " << var << std::endl;
164	11918	value = false;
165		}
166	116250	Trace("model-builder-assertions")
167	116250	<< "(assert" << (value ? " " : " (not ") << var
168	58125	<< (value ? ");" : "));") << std::endl;
169	58125	if (!d_model->assertPredicate(var, value))
170		{
171		return false;
172		}
173		}
174	24989	return true;
175		}
176
177		} // namespace theory
178	31137	} // namespace cvc5