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GCC Code Coverage Report

Directory:	.		Exec	Total	Coverage
File:	src/theory/datatypes/inference_manager.cpp	Lines:	49	65	75.4 %
Date:	2021-09-29	Branches:	100	244	41.0 %


/******************************************************************************
 * Top contributors (to current version):
 *   Andrew Reynolds, Gereon Kremer, Aina Niemetz
 *
 * 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.
 * ****************************************************************************
 *
 * Datatypes inference manager.
 */

#include "theory/datatypes/inference_manager.h"

#include "expr/dtype.h"
#include "options/datatypes_options.h"
#include "proof/eager_proof_generator.h"
#include "smt/smt_statistics_registry.h"
#include "theory/rewriter.h"
#include "theory/theory.h"
#include "theory/theory_state.h"
#include "theory/trust_substitutions.h"

using namespace cvc5::kind;

namespace cvc5 {
namespace theory {
namespace datatypes {

InferenceManager::InferenceManager(Env& env,
                                   Theory& t,
                                   TheoryState& state,
                                   ProofNodeManager* pnm)
    : InferenceManagerBuffered(env, t, state, pnm, "theory::datatypes::"),
      d_pnm(pnm),
      d_ipc(pnm == nullptr ? nullptr : new InferProofCons(context(), pnm)),
      d_lemPg(pnm == nullptr ? nullptr
                             : new EagerProofGenerator(
                                 pnm, userContext(), "datatypes::lemPg"))
{
  d_false = NodeManager::currentNM()->mkConst(false);
}

InferenceManager::~InferenceManager()
{
}

void InferenceManager::addPendingInference(Node conc,
                                           InferenceId id,
                                           Node exp,
                                           bool forceLemma)
{
  // if we are forcing the inference to be processed as a lemma, or if the
  // inference must be sent as a lemma based on the policy in
  // mustCommunicateFact.
  if (forceLemma || DatatypesInference::mustCommunicateFact(conc, exp))
  {
    d_pendingLem.emplace_back(new DatatypesInference(this, conc, exp, id));
  }
  else
  {
    d_pendingFact.emplace_back(new DatatypesInference(this, conc, exp, id));
  }
}

void InferenceManager::process()
{
  // if we are in conflict, immediately reset and clear pending
  if (d_theoryState.isInConflict())
  {
    reset();
    clearPending();
    return;
  }
  // process pending lemmas, used infrequently, only for definitional lemmas
  doPendingLemmas();
  // now process the pending facts
  doPendingFacts();
}

void InferenceManager::sendDtLemma(Node lem, InferenceId id, LemmaProperty p)
{
  if (isProofEnabled())
  {
    TrustNode trn = processDtLemma(lem, Node::null(), id);
    trustedLemma(trn, id);
    return;
  }
  // otherwise send as a normal lemma directly
  lemma(lem, id, p);
}

void InferenceManager::sendDtConflict(const std::vector<Node>& conf, InferenceId id)
{
  if (isProofEnabled())
  {
    Node exp = NodeManager::currentNM()->mkAnd(conf);
    prepareDtInference(d_false, exp, id, d_ipc.get());
  }
  conflictExp(id, conf, d_ipc.get());
}

bool InferenceManager::isProofEnabled() const { return d_ipc != nullptr; }

TrustNode InferenceManager::processDtLemma(Node conc, Node exp, InferenceId id)
{
  // set up a proof constructor
  std::shared_ptr<InferProofCons> ipcl;
  if (isProofEnabled())
  {
    ipcl = std::make_shared<InferProofCons>(nullptr, d_pnm);
  }
  conc = prepareDtInference(conc, exp, id, ipcl.get());
  // send it as a lemma
  Node lem;
  if (!exp.isNull() && !exp.isConst())
  {
    lem = NodeManager::currentNM()->mkNode(kind::IMPLIES, exp, conc);
  }
  else
  {
    lem = conc;
  }
  if (isProofEnabled())
  {
    // store its proof
    std::shared_ptr<ProofNode> pbody = ipcl->getProofFor(conc);
    std::shared_ptr<ProofNode> pn = pbody;
    if (!exp.isNull() && !exp.isConst())
    {
      std::vector<Node> expv;
      expv.push_back(exp);
      pn = d_pnm->mkScope(pbody, expv);
    }
    d_lemPg->setProofFor(lem, pn);
  }
  return TrustNode::mkTrustLemma(lem, d_lemPg.get());
}

Node InferenceManager::processDtFact(Node conc,
                                     Node exp,
                                     InferenceId id,
                                     ProofGenerator*& pg)
{
  pg = d_ipc.get();
  return prepareDtInference(conc, exp, id, d_ipc.get());
}

Node InferenceManager::prepareDtInference(Node conc,
                                          Node exp,
                                          InferenceId id,
                                          InferProofCons* ipc)
{
  Trace("dt-lemma-debug") << "prepareDtInference : " << conc << " via " << exp
                          << " by " << id << std::endl;
  if (conc.getKind() == EQUAL && conc[0].getType().isBoolean())
  {
    // must turn (= conc false) into (not conc)
    conc = Rewriter::rewrite(conc);
  }
  if (isProofEnabled())
  {
    Assert(ipc != nullptr);
    // If proofs are enabled, notify the proof constructor.
    // Notice that we have to reconstruct a datatypes inference here. This is
    // because the inference in the pending vector may be destroyed as we are
    // processing this inference, if we triggered to backtrack based on the
    // call below, since it is a unique pointer.
    std::shared_ptr<DatatypesInference> di =
        std::make_shared<DatatypesInference>(this, conc, exp, id);
    ipc->notifyFact(di);
  }
  return conc;
}

}  // namespace datatypes
}  // namespace theory
}  // namespace cvc5


Generated by: GCOVR (Version 3.2)

Line	Exec	Source
1		/******************************************************************************
2		* Top contributors (to current version):
3		* Andrew Reynolds, Gereon Kremer, Aina Niemetz
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		* Datatypes inference manager.
14		*/
15
16		#include "theory/datatypes/inference_manager.h"
17
18		#include "expr/dtype.h"
19		#include "options/datatypes_options.h"
20		#include "proof/eager_proof_generator.h"
21		#include "smt/smt_statistics_registry.h"
22		#include "theory/rewriter.h"
23		#include "theory/theory.h"
24		#include "theory/theory_state.h"
25		#include "theory/trust_substitutions.h"
26
27		using namespace cvc5::kind;
28
29		namespace cvc5 {
30		namespace theory {
31		namespace datatypes {
32
33	6271	InferenceManager::InferenceManager(Env& env,
34		Theory& t,
35		TheoryState& state,
36	6271	ProofNodeManager* pnm)
37		: InferenceManagerBuffered(env, t, state, pnm, "theory::datatypes::"),
38		d_pnm(pnm),
39	60	d_ipc(pnm == nullptr ? nullptr : new InferProofCons(context(), pnm)),
40		d_lemPg(pnm == nullptr ? nullptr
41		: new EagerProofGenerator(
42	6331	pnm, userContext(), "datatypes::lemPg"))
43		{
44	6271	d_false = NodeManager::currentNM()->mkConst(false);
45	6271	}
46
47	6268	InferenceManager::~InferenceManager()
48		{
49	6268	}
50
51	261140	void InferenceManager::addPendingInference(Node conc,
52		InferenceId id,
53		Node exp,
54		bool forceLemma)
55		{
56		// if we are forcing the inference to be processed as a lemma, or if the
57		// inference must be sent as a lemma based on the policy in
58		// mustCommunicateFact.
59	261140	if (forceLemma \|\| DatatypesInference::mustCommunicateFact(conc, exp))
60		{
61	2769	d_pendingLem.emplace_back(new DatatypesInference(this, conc, exp, id));
62		}
63		else
64		{
65	258371	d_pendingFact.emplace_back(new DatatypesInference(this, conc, exp, id));
66		}
67	261140	}
68
69	2914198	void InferenceManager::process()
70		{
71		// if we are in conflict, immediately reset and clear pending
72	2914198	if (d_theoryState.isInConflict())
73		{
74	11112	reset();
75	11112	clearPending();
76	11112	return;
77		}
78		// process pending lemmas, used infrequently, only for definitional lemmas
79	2903086	doPendingLemmas();
80		// now process the pending facts
81	2903086	doPendingFacts();
82		}
83
84	1051	void InferenceManager::sendDtLemma(Node lem, InferenceId id, LemmaProperty p)
85		{
86	1051	if (isProofEnabled())
87		{
88		TrustNode trn = processDtLemma(lem, Node::null(), id);
89		trustedLemma(trn, id);
90		return;
91		}
92		// otherwise send as a normal lemma directly
93	1051	lemma(lem, id, p);
94		}
95
96	2139	void InferenceManager::sendDtConflict(const std::vector<Node>& conf, InferenceId id)
97		{
98	2139	if (isProofEnabled())
99		{
100		Node exp = NodeManager::currentNM()->mkAnd(conf);
101		prepareDtInference(d_false, exp, id, d_ipc.get());
102		}
103	2139	conflictExp(id, conf, d_ipc.get());
104	2139	}
105
106	267822	bool InferenceManager::isProofEnabled() const { return d_ipc != nullptr; }
107
108	2703	TrustNode InferenceManager::processDtLemma(Node conc, Node exp, InferenceId id)
109		{
110		// set up a proof constructor
111	5406	std::shared_ptr<InferProofCons> ipcl;
112	2703	if (isProofEnabled())
113		{
114		ipcl = std::make_shared<InferProofCons>(nullptr, d_pnm);
115		}
116	2703	conc = prepareDtInference(conc, exp, id, ipcl.get());
117		// send it as a lemma
118	5406	Node lem;
119	2703	if (!exp.isNull() && !exp.isConst())
120		{
121	2428	lem = NodeManager::currentNM()->mkNode(kind::IMPLIES, exp, conc);
122		}
123		else
124		{
125	275	lem = conc;
126		}
127	2703	if (isProofEnabled())
128		{
129		// store its proof
130		std::shared_ptr<ProofNode> pbody = ipcl->getProofFor(conc);
131		std::shared_ptr<ProofNode> pn = pbody;
132		if (!exp.isNull() && !exp.isConst())
133		{
134		std::vector<Node> expv;
135		expv.push_back(exp);
136		pn = d_pnm->mkScope(pbody, expv);
137		}
138		d_lemPg->setProofFor(lem, pn);
139		}
140	5406	return TrustNode::mkTrustLemma(lem, d_lemPg.get());
141		}
142
143	256523	Node InferenceManager::processDtFact(Node conc,
144		Node exp,
145		InferenceId id,
146		ProofGenerator*& pg)
147		{
148	256523	pg = d_ipc.get();
149	256523	return prepareDtInference(conc, exp, id, d_ipc.get());
150		}
151
152	259226	Node InferenceManager::prepareDtInference(Node conc,
153		Node exp,
154		InferenceId id,
155		InferProofCons* ipc)
156		{
157	518452	Trace("dt-lemma-debug") << "prepareDtInference : " << conc << " via " << exp
158	259226	<< " by " << id << std::endl;
159	259226	if (conc.getKind() == EQUAL && conc[0].getType().isBoolean())
160		{
161		// must turn (= conc false) into (not conc)
162	307	conc = Rewriter::rewrite(conc);
163		}
164	259226	if (isProofEnabled())
165		{
166		Assert(ipc != nullptr);
167		// If proofs are enabled, notify the proof constructor.
168		// Notice that we have to reconstruct a datatypes inference here. This is
169		// because the inference in the pending vector may be destroyed as we are
170		// processing this inference, if we triggered to backtrack based on the
171		// call below, since it is a unique pointer.
172		std::shared_ptr<DatatypesInference> di =
173		std::make_shared<DatatypesInference>(this, conc, exp, id);
174		ipc->notifyFact(di);
175		}
176	259226	return conc;
177		}
178
179		} // namespace datatypes
180		} // namespace theory
181	22746	} // namespace cvc5