1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
|
/********************* */
/*! \file cnf_proof.cpp
** \verbatim
** Original author: Liana Hadarean
** Major contributors: Morgan Deters
** Minor contributors (to current version): none
** This file is part of the CVC4 project.
** Copyright (c) 2009-2014 New York University and The University of Iowa
** See the file COPYING in the top-level source directory for licensing
** information.\endverbatim
**
** \brief [[ Add one-line brief description here ]]
**
** [[ Add lengthier description here ]]
** \todo document this file
**/
#include "proof/cnf_proof.h"
#include "proof/theory_proof.h"
#include "proof/proof_manager.h"
#include "prop/sat_solver_types.h"
#include "prop/minisat/minisat.h"
#include "prop/cnf_stream.h"
using namespace CVC4::prop;
namespace CVC4 {
CnfProof::CnfProof(CnfStream* stream)
: d_cnfStream(stream)
{}
Expr CnfProof::getAtom(prop::SatVariable var) {
prop::SatLiteral lit (var);
Node node = d_cnfStream->getNode(lit);
Expr atom = node.toExpr();
return atom;
}
CnfProof::~CnfProof() {
}
LFSCCnfProof::iterator LFSCCnfProof::begin_atom_mapping() {
return iterator(*this, ProofManager::currentPM()->begin_vars());
}
LFSCCnfProof::iterator LFSCCnfProof::end_atom_mapping() {
return iterator(*this, ProofManager::currentPM()->end_vars());
}
void LFSCCnfProof::printAtomMapping(std::ostream& os, std::ostream& paren) {
ProofManager::var_iterator it = ProofManager::currentPM()->begin_vars();
ProofManager::var_iterator end = ProofManager::currentPM()->end_vars();
for (;it != end; ++it) {
os << "(decl_atom ";
if (ProofManager::currentPM()->getLogic().compare("QF_UF") == 0) {
Expr atom = getAtom(*it);
LFSCTheoryProof::printTerm(atom, os);
} else {
// print fake atoms for all other logics
os << "true ";
}
os << " (\\ " << ProofManager::getVarName(*it) << " (\\ " << ProofManager::getAtomName(*it) << "\n";
paren << ")))";
}
}
void LFSCCnfProof::printClauses(std::ostream& os, std::ostream& paren) {
printInputClauses(os, paren);
printTheoryLemmas(os, paren);
}
void LFSCCnfProof::printInputClauses(std::ostream& os, std::ostream& paren) {
os << " ;; Input Clauses \n";
ProofManager::clause_iterator it = ProofManager::currentPM()->begin_input_clauses();
ProofManager::clause_iterator end = ProofManager::currentPM()->end_input_clauses();
for (; it != end; ++it) {
ClauseId id = it->first;
const prop::SatClause* clause = it->second;
os << "(satlem _ _ ";
std::ostringstream clause_paren;
printClause(*clause, os, clause_paren);
os << " (clausify_false trust)" << clause_paren.str();
os << "( \\ " << ProofManager::getInputClauseName(id) << "\n";
paren << "))";
}
}
void LFSCCnfProof::printTheoryLemmas(std::ostream& os, std::ostream& paren) {
os << " ;; Theory Lemmas \n";
ProofManager::clause_iterator it = ProofManager::currentPM()->begin_lemmas();
ProofManager::clause_iterator end = ProofManager::currentPM()->end_lemmas();
for (; it != end; ++it) {
ClauseId id = it->first;
const prop::SatClause* clause = it->second;
os << "(satlem _ _ ";
std::ostringstream clause_paren;
printClause(*clause, os, clause_paren);
os << " (clausify_false trust)" << clause_paren.str();
os << "( \\ " << ProofManager::getLemmaClauseName(id) <<"\n";
paren << "))";
}
}
void LFSCCnfProof::printClause(const prop::SatClause& clause, std::ostream& os, std::ostream& paren) {
for (unsigned i = 0; i < clause.size(); ++i) {
prop::SatLiteral lit = clause[i];
prop::SatVariable var = lit.getSatVariable();
if (lit.isNegated()) {
os << "(ast _ _ _ " << ProofManager::getAtomName(var) <<" (\\ " << ProofManager::getLitName(lit) << " ";
paren << "))";
} else {
os << "(asf _ _ _ " << ProofManager::getAtomName(var) <<" (\\ " << ProofManager::getLitName(lit) << " ";
paren << "))";
}
}
}
} /* CVC4 namespace */
|
