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authorMorgan Deters <mdeters@cs.nyu.edu>2013-07-29 16:08:45 -0400
committerMorgan Deters <mdeters@cs.nyu.edu>2013-07-29 16:08:45 -0400
commitda9eec6aa0fc0f6c29f2c3fdb08bd45ba9c27808 (patch)
treedca1b2fb1d1c213a94d5b2902aed4a24895aae3f /src/theory/quantifiers/bounded_integers.cpp
parentbc3db83a6856016c9c838fbabdd29f962aa60769 (diff)
Fix numerous compiler warnings on various platforms
Diffstat (limited to 'src/theory/quantifiers/bounded_integers.cpp')
-rwxr-xr-xsrc/theory/quantifiers/bounded_integers.cpp732
1 files changed, 366 insertions, 366 deletions
diff --git a/src/theory/quantifiers/bounded_integers.cpp b/src/theory/quantifiers/bounded_integers.cpp
index d893a9ff2..13e075265 100755
--- a/src/theory/quantifiers/bounded_integers.cpp
+++ b/src/theory/quantifiers/bounded_integers.cpp
@@ -1,366 +1,366 @@
-/********************* */
-/*! \file bounded_integers.cpp
- ** \verbatim
- ** Original author: Andrew Reynolds
- ** This file is part of the CVC4 project.
- ** Copyright (c) 2009-2013 New York University and The University of Iowa
- ** See the file COPYING in the top-level source directory for licensing
- ** information.\endverbatim
- **
- ** \brief Bounded integers module
- **
- ** This class manages integer bounds for quantifiers
- **/
-
-#include "theory/quantifiers/bounded_integers.h"
-#include "theory/quantifiers/quant_util.h"
-#include "theory/quantifiers/first_order_model.h"
-#include "theory/quantifiers/model_engine.h"
-
-using namespace CVC4;
-using namespace std;
-using namespace CVC4::theory;
-using namespace CVC4::theory::quantifiers;
-using namespace CVC4::kind;
-
-void BoundedIntegers::RangeModel::initialize() {
- //add initial split lemma
- Node ltr = NodeManager::currentNM()->mkNode( LT, d_range, NodeManager::currentNM()->mkConst( Rational(0) ) );
- ltr = Rewriter::rewrite( ltr );
- Trace("bound-int-lemma") << " *** bound int: initial split on " << ltr << std::endl;
- d_bi->getQuantifiersEngine()->getOutputChannel().split( ltr );
- Node ltr_lit = ltr.getKind()==NOT ? ltr[0] : ltr;
- d_range_literal[-1] = ltr_lit;
- d_lit_to_range[ltr_lit] = -1;
- d_lit_to_pol[ltr_lit] = ltr.getKind()!=NOT;
- //register with bounded integers
- Trace("bound-int-debug") << "Literal " << ltr_lit << " is literal for " << d_range << std::endl;
- d_bi->addLiteralFromRange(ltr_lit, d_range);
-}
-
-void BoundedIntegers::RangeModel::assertNode(Node n) {
- bool pol = n.getKind()!=NOT;
- Node nlit = n.getKind()==NOT ? n[0] : n;
- if( d_lit_to_range.find( nlit )!=d_lit_to_range.end() ){
- Trace("bound-int-assert") << "With polarity = " << pol << " (req "<< d_lit_to_pol[nlit] << ")";
- Trace("bound-int-assert") << ", found literal " << nlit;
- Trace("bound-int-assert") << ", it is bound literal " << d_lit_to_range[nlit] << " for " << d_range << std::endl;
- d_range_assertions[nlit] = (pol==d_lit_to_pol[nlit]);
- if( pol!=d_lit_to_pol[nlit] ){
- //check if we need a new split?
- if( !d_has_range ){
- bool needsRange = true;
- for( std::map< Node, int >::iterator it = d_lit_to_range.begin(); it != d_lit_to_range.end(); ++it ){
- if( d_range_assertions.find( it->first )==d_range_assertions.end() ){
- needsRange = false;
- break;
- }
- }
- if( needsRange ){
- allocateRange();
- }
- }
- }else{
- if (!d_has_range || d_lit_to_range[nlit]<d_curr_range ){
- Trace("bound-int-bound") << "Successfully bound " << d_range << " to " << d_lit_to_range[nlit] << std::endl;
- d_curr_range = d_lit_to_range[nlit];
- }
- //set the range
- d_has_range = true;
- }
- }else{
- Message() << "Could not find literal " << nlit << " for range " << d_range << std::endl;
- exit(0);
- }
-}
-
-void BoundedIntegers::RangeModel::allocateRange() {
- d_curr_max++;
- int newBound = d_curr_max;
- Trace("bound-int-proc") << "Allocate range bound " << newBound << " for " << d_range << std::endl;
- //TODO: newBound should be chosen in a smarter way
- Node ltr = NodeManager::currentNM()->mkNode( LEQ, d_range, NodeManager::currentNM()->mkConst( Rational(newBound) ) );
- ltr = Rewriter::rewrite( ltr );
- Trace("bound-int-lemma") << " *** bound int: split on " << ltr << std::endl;
- d_bi->getQuantifiersEngine()->getOutputChannel().split( ltr );
- Node ltr_lit = ltr.getKind()==NOT ? ltr[0] : ltr;
- d_range_literal[newBound] = ltr_lit;
- d_lit_to_range[ltr_lit] = newBound;
- d_lit_to_pol[ltr_lit] = ltr.getKind()!=NOT;
- //register with bounded integers
- d_bi->addLiteralFromRange(ltr_lit, d_range);
-}
-
-Node BoundedIntegers::RangeModel::getNextDecisionRequest() {
- //request the current cardinality as a decision literal, if not already asserted
- for( std::map< Node, int >::iterator it = d_lit_to_range.begin(); it != d_lit_to_range.end(); ++it ){
- int i = it->second;
- if( !d_has_range || i<d_curr_range ){
- Node rn = it->first;
- Assert( !rn.isNull() );
- if( d_range_assertions.find( rn )==d_range_assertions.end() ){
- if (!d_lit_to_pol[it->first]) {
- rn = rn.negate();
- }
- Trace("bound-int-dec") << "For " << d_range << ", make decision " << rn << " to make range " << i << std::endl;
- return rn;
- }
- }
- }
- return Node::null();
-}
-
-
-BoundedIntegers::BoundedIntegers(context::Context* c, QuantifiersEngine* qe) :
-QuantifiersModule(qe), d_assertions(c){
-
-}
-
-bool BoundedIntegers::isBound( Node f, Node v ) {
- return std::find( d_set[f].begin(), d_set[f].end(), v )!=d_set[f].end();
-}
-
-bool BoundedIntegers::hasNonBoundVar( Node f, Node b ) {
- if( b.getKind()==BOUND_VARIABLE ){
- if( !isBound( f, b ) ){
- return true;
- }
- }else{
- for( unsigned i=0; i<b.getNumChildren(); i++ ){
- if( hasNonBoundVar( f, b[i] ) ){
- return true;
- }
- }
- }
- return false;
-}
-
-void BoundedIntegers::processLiteral( Node f, Node lit, bool pol,
- std::map< int, std::map< Node, Node > >& bound_lit_map,
- std::map< int, std::map< Node, bool > >& bound_lit_pol_map ) {
- if( lit.getKind()==GEQ && lit[0].getType().isInteger() ){
- std::map< Node, Node > msum;
- if (QuantArith::getMonomialSumLit( lit, msum )){
- Trace("bound-int-debug") << "Literal (polarity = " << pol << ") " << lit << " is monomial sum : " << std::endl;
- for(std::map< Node, Node >::iterator it = msum.begin(); it != msum.end(); ++it ){
- Trace("bound-int-debug") << " ";
- if( !it->second.isNull() ){
- Trace("bound-int-debug") << it->second;
- if( !it->first.isNull() ){
- Trace("bound-int-debug") << " * ";
- }
- }
- if( !it->first.isNull() ){
- Trace("bound-int-debug") << it->first;
- }
- Trace("bound-int-debug") << std::endl;
- }
- Trace("bound-int-debug") << std::endl;
- for( std::map< Node, Node >::iterator it = msum.begin(); it != msum.end(); ++it ){
- if ( !it->first.isNull() && it->first.getKind()==BOUND_VARIABLE && !isBound( f, it->first ) ){
- Node veq;
- if( QuantArith::isolate( it->first, msum, veq, GEQ ) ){
- Node n1 = veq[0];
- Node n2 = veq[1];
- if(pol){
- //flip
- n1 = veq[1];
- n2 = veq[0];
- if( n1.getKind()==BOUND_VARIABLE ){
- n2 = QuantArith::offset( n2, 1 );
- }else{
- n1 = QuantArith::offset( n1, -1 );
- }
- veq = NodeManager::currentNM()->mkNode( GEQ, n1, n2 );
- }
- Trace("bound-int-debug") << "Isolated for " << it->first << " : (" << n1 << " >= " << n2 << ")" << std::endl;
- Node bv = n1.getKind()==BOUND_VARIABLE ? n1 : n2;
- if( !isBound( f, bv ) ){
- if( !hasNonBoundVar( f, n1.getKind()==BOUND_VARIABLE ? n2 : n1 ) ) {
- Trace("bound-int-debug") << "The bound is relevant." << std::endl;
- int loru = n1.getKind()==BOUND_VARIABLE ? 0 : 1;
- d_bounds[loru][f][bv] = (n1.getKind()==BOUND_VARIABLE ? n2 : n1);
- bound_lit_map[loru][bv] = lit;
- bound_lit_pol_map[loru][bv] = pol;
- }
- }
- }
- }
- }
- }
- }else if( lit.getKind()==LEQ || lit.getKind()==LT || lit.getKind()==GT ) {
- Message() << "BoundedIntegers : Bad kind for literal : " << lit << std::endl;
- exit(0);
- }
-}
-
-void BoundedIntegers::process( Node f, Node n, bool pol,
- std::map< int, std::map< Node, Node > >& bound_lit_map,
- std::map< int, std::map< Node, bool > >& bound_lit_pol_map ){
- if( (( n.getKind()==IMPLIES || n.getKind()==OR) && pol) || (n.getKind()==AND && !pol) ){
- for( unsigned i=0; i<n.getNumChildren(); i++) {
- bool newPol = n.getKind()==IMPLIES && i==0 ? !pol : pol;
- process( f, n[i], newPol, bound_lit_map, bound_lit_pol_map );
- }
- }else if( n.getKind()==NOT ){
- process( f, n[0], !pol, bound_lit_map, bound_lit_pol_map );
- }else {
- processLiteral( f, n, pol, bound_lit_map, bound_lit_pol_map );
- }
-}
-
-void BoundedIntegers::check( Theory::Effort e ) {
-
-}
-
-
-void BoundedIntegers::addLiteralFromRange( Node lit, Node r ) {
- d_lit_to_ranges[lit].push_back(r);
- //check if it is already asserted?
- if(d_assertions.find(lit)!=d_assertions.end()){
- d_rms[r]->assertNode( d_assertions[lit] ? lit : lit.negate() );
- }
-}
-
-void BoundedIntegers::registerQuantifier( Node f ) {
- Trace("bound-int") << "Register quantifier " << f << std::endl;
- bool hasIntType = false;
- int finiteTypes = 0;
- std::map< Node, int > numMap;
- for( unsigned i=0; i<f[0].getNumChildren(); i++) {
- numMap[f[0][i]] = i;
- if( f[0][i].getType().isInteger() ){
- hasIntType = true;
- }
- else if( f[0][i].getType().isSort() ){
- finiteTypes++;
- }
- }
- if( hasIntType ){
- bool success;
- do{
- std::map< int, std::map< Node, Node > > bound_lit_map;
- std::map< int, std::map< Node, bool > > bound_lit_pol_map;
- success = false;
- process( f, f[1], true, bound_lit_map, bound_lit_pol_map );
- for( std::map< Node, Node >::iterator it = d_bounds[0][f].begin(); it != d_bounds[0][f].end(); ++it ){
- Node v = it->first;
- if( !isBound(f,v) ){
- if( d_bounds[1][f].find(v)!=d_bounds[1][f].end() ){
- d_set[f].push_back(v);
- d_set_nums[f].push_back(numMap[v]);
- success = true;
- //set Attributes on literals
- for( unsigned b=0; b<2; b++ ){
- Assert( bound_lit_map[b].find( v )!=bound_lit_map[b].end() );
- Assert( bound_lit_pol_map[b].find( v )!=bound_lit_pol_map[b].end() );
- BoundIntLitAttribute bila;
- bound_lit_map[b][v].setAttribute( bila, bound_lit_pol_map[b][v] ? 1 : 0 );
- }
- Trace("bound-int") << "Variable " << v << " is bound because of literals " << bound_lit_map[0][v] << " and " << bound_lit_map[1][v] << std::endl;
- }
- }
- }
- }while( success );
- Trace("bound-int") << "Bounds are : " << std::endl;
- for( unsigned i=0; i<d_set[f].size(); i++) {
- Node v = d_set[f][i];
- Node r = NodeManager::currentNM()->mkNode( MINUS, d_bounds[1][f][v], d_bounds[0][f][v] );
- d_range[f][v] = Rewriter::rewrite( r );
- Trace("bound-int") << " " << d_bounds[0][f][v] << " <= " << v << " <= " << d_bounds[1][f][v] << " (range is " << d_range[f][v] << ")" << std::endl;
- }
- if( d_set[f].size()==(f[0].getNumChildren()-finiteTypes) ){
- d_bound_quants.push_back( f );
- for( unsigned i=0; i<d_set[f].size(); i++) {
- Node v = d_set[f][i];
- Node r = d_range[f][v];
- if( quantifiers::TermDb::hasBoundVarAttr(r) ){
- //introduce a new bound
- Node new_range = NodeManager::currentNM()->mkSkolem( "bir_$$", r.getType(), "bound for term" );
- d_nground_range[f][v] = d_range[f][v];
- d_range[f][v] = new_range;
- r = new_range;
- }
- if( r.getKind()!=CONST_RATIONAL ){
- if( std::find(d_ranges.begin(), d_ranges.end(), r)==d_ranges.end() ){
- Trace("bound-int") << "For " << v << ", bounded Integer Module will try to minimize : " << r << " " << r.getKind() << std::endl;
- d_ranges.push_back( r );
- d_rms[r] = new RangeModel(this, r, d_quantEngine->getSatContext() );
- d_rms[r]->initialize();
- }
- }
- }
- }
- }
-}
-
-void BoundedIntegers::assertNode( Node n ) {
- Trace("bound-int-assert") << "Assert " << n << std::endl;
- Node nlit = n.getKind()==NOT ? n[0] : n;
- if( d_lit_to_ranges.find(nlit)!=d_lit_to_ranges.end() ){
- Trace("bound-int-assert") << "This is the bounding literal for " << d_lit_to_ranges[nlit].size() << " ranges." << std::endl;
- for( unsigned i=0; i<d_lit_to_ranges[nlit].size(); i++) {
- Node r = d_lit_to_ranges[nlit][i];
- Trace("bound-int-assert") << " ...this is a bounding literal for " << r << std::endl;
- d_rms[r]->assertNode( n );
- }
- }
- d_assertions[nlit] = n.getKind()!=NOT;
-}
-
-Node BoundedIntegers::getNextDecisionRequest() {
- Trace("bound-int-dec") << "bi: Get next decision request?" << std::endl;
- for( unsigned i=0; i<d_ranges.size(); i++) {
- Node d = d_rms[d_ranges[i]]->getNextDecisionRequest();
- if (!d.isNull()) {
- return d;
- }
- }
- return Node::null();
-}
-
-void BoundedIntegers::getBoundValues( Node f, Node v, RepSetIterator * rsi, Node & l, Node & u ) {
- l = d_bounds[0][f][v];
- u = d_bounds[1][f][v];
- if( d_nground_range[f].find(v)!=d_nground_range[f].end() ){
- //must create substitution
- std::vector< Node > vars;
- std::vector< Node > subs;
- Trace("bound-int-rsi") << "Get bound value in model of variable " << v << std::endl;
- for( unsigned i=0; i<d_set[f].size(); i++) {
- if( d_set[f][i]!=v ){
- Trace("bound-int-rsi") << "Look up the value for " << d_set[f][i] << " " << rsi->d_var_order[d_set_nums[f][i]] << std::endl;
- Trace("bound-int-rsi") << "term : " << rsi->getTerm(rsi->d_var_order[d_set_nums[f][i]]) << std::endl;
- vars.push_back(d_set[f][i]);
- subs.push_back(rsi->getTerm(rsi->d_var_order[d_set_nums[f][i]]));
- }else{
- break;
- }
- }
- Trace("bound-int-rsi") << "Do substitution..." << std::endl;
- //check if it has been instantiated
- if (!vars.empty() && !d_bnd_it[f][v].hasInstantiated(subs)){
- //must add the lemma
- Node nn = d_nground_range[f][v];
- nn = nn.substitute( vars.begin(), vars.end(), subs.begin(), subs.end() );
- Node lem = NodeManager::currentNM()->mkNode( LEQ, nn, d_range[f][v] );
- Trace("bound-int-lemma") << "*** Add lemma to minimize instantiated non-ground term " << lem << std::endl;
- d_quantEngine->getOutputChannel().lemma(lem);
- l = Node::null();
- u = Node::null();
- return;
- }else{
- u = u.substitute( vars.begin(), vars.end(), subs.begin(), subs.end() );
- l = l.substitute( vars.begin(), vars.end(), subs.begin(), subs.end() );
- }
- }
- Trace("bound-int-rsi") << "Get value in model for..." << l << " and " << u << std::endl;
- l = d_quantEngine->getModel()->getCurrentModelValue( l );
- u = d_quantEngine->getModel()->getCurrentModelValue( u );
- Trace("bound-int-rsi") << "Value is " << l << " ... " << u << std::endl;
- return;
-}
-
-bool BoundedIntegers::isGroundRange(Node f, Node v) {
- return isBoundVar(f,v) && !quantifiers::TermDb::hasBoundVarAttr(getLowerBound(f,v)) && !quantifiers::TermDb::hasBoundVarAttr(getUpperBound(f,v));
-} \ No newline at end of file
+/********************* */
+/*! \file bounded_integers.cpp
+ ** \verbatim
+ ** Original author: Andrew Reynolds
+ ** This file is part of the CVC4 project.
+ ** Copyright (c) 2009-2013 New York University and The University of Iowa
+ ** See the file COPYING in the top-level source directory for licensing
+ ** information.\endverbatim
+ **
+ ** \brief Bounded integers module
+ **
+ ** This class manages integer bounds for quantifiers
+ **/
+
+#include "theory/quantifiers/bounded_integers.h"
+#include "theory/quantifiers/quant_util.h"
+#include "theory/quantifiers/first_order_model.h"
+#include "theory/quantifiers/model_engine.h"
+
+using namespace CVC4;
+using namespace std;
+using namespace CVC4::theory;
+using namespace CVC4::theory::quantifiers;
+using namespace CVC4::kind;
+
+void BoundedIntegers::RangeModel::initialize() {
+ //add initial split lemma
+ Node ltr = NodeManager::currentNM()->mkNode( LT, d_range, NodeManager::currentNM()->mkConst( Rational(0) ) );
+ ltr = Rewriter::rewrite( ltr );
+ Trace("bound-int-lemma") << " *** bound int: initial split on " << ltr << std::endl;
+ d_bi->getQuantifiersEngine()->getOutputChannel().split( ltr );
+ Node ltr_lit = ltr.getKind()==NOT ? ltr[0] : ltr;
+ d_range_literal[-1] = ltr_lit;
+ d_lit_to_range[ltr_lit] = -1;
+ d_lit_to_pol[ltr_lit] = ltr.getKind()!=NOT;
+ //register with bounded integers
+ Trace("bound-int-debug") << "Literal " << ltr_lit << " is literal for " << d_range << std::endl;
+ d_bi->addLiteralFromRange(ltr_lit, d_range);
+}
+
+void BoundedIntegers::RangeModel::assertNode(Node n) {
+ bool pol = n.getKind()!=NOT;
+ Node nlit = n.getKind()==NOT ? n[0] : n;
+ if( d_lit_to_range.find( nlit )!=d_lit_to_range.end() ){
+ Trace("bound-int-assert") << "With polarity = " << pol << " (req "<< d_lit_to_pol[nlit] << ")";
+ Trace("bound-int-assert") << ", found literal " << nlit;
+ Trace("bound-int-assert") << ", it is bound literal " << d_lit_to_range[nlit] << " for " << d_range << std::endl;
+ d_range_assertions[nlit] = (pol==d_lit_to_pol[nlit]);
+ if( pol!=d_lit_to_pol[nlit] ){
+ //check if we need a new split?
+ if( !d_has_range ){
+ bool needsRange = true;
+ for( std::map< Node, int >::iterator it = d_lit_to_range.begin(); it != d_lit_to_range.end(); ++it ){
+ if( d_range_assertions.find( it->first )==d_range_assertions.end() ){
+ needsRange = false;
+ break;
+ }
+ }
+ if( needsRange ){
+ allocateRange();
+ }
+ }
+ }else{
+ if (!d_has_range || d_lit_to_range[nlit]<d_curr_range ){
+ Trace("bound-int-bound") << "Successfully bound " << d_range << " to " << d_lit_to_range[nlit] << std::endl;
+ d_curr_range = d_lit_to_range[nlit];
+ }
+ //set the range
+ d_has_range = true;
+ }
+ }else{
+ Message() << "Could not find literal " << nlit << " for range " << d_range << std::endl;
+ exit(0);
+ }
+}
+
+void BoundedIntegers::RangeModel::allocateRange() {
+ d_curr_max++;
+ int newBound = d_curr_max;
+ Trace("bound-int-proc") << "Allocate range bound " << newBound << " for " << d_range << std::endl;
+ //TODO: newBound should be chosen in a smarter way
+ Node ltr = NodeManager::currentNM()->mkNode( LEQ, d_range, NodeManager::currentNM()->mkConst( Rational(newBound) ) );
+ ltr = Rewriter::rewrite( ltr );
+ Trace("bound-int-lemma") << " *** bound int: split on " << ltr << std::endl;
+ d_bi->getQuantifiersEngine()->getOutputChannel().split( ltr );
+ Node ltr_lit = ltr.getKind()==NOT ? ltr[0] : ltr;
+ d_range_literal[newBound] = ltr_lit;
+ d_lit_to_range[ltr_lit] = newBound;
+ d_lit_to_pol[ltr_lit] = ltr.getKind()!=NOT;
+ //register with bounded integers
+ d_bi->addLiteralFromRange(ltr_lit, d_range);
+}
+
+Node BoundedIntegers::RangeModel::getNextDecisionRequest() {
+ //request the current cardinality as a decision literal, if not already asserted
+ for( std::map< Node, int >::iterator it = d_lit_to_range.begin(); it != d_lit_to_range.end(); ++it ){
+ int i = it->second;
+ if( !d_has_range || i<d_curr_range ){
+ Node rn = it->first;
+ Assert( !rn.isNull() );
+ if( d_range_assertions.find( rn )==d_range_assertions.end() ){
+ if (!d_lit_to_pol[it->first]) {
+ rn = rn.negate();
+ }
+ Trace("bound-int-dec") << "For " << d_range << ", make decision " << rn << " to make range " << i << std::endl;
+ return rn;
+ }
+ }
+ }
+ return Node::null();
+}
+
+
+BoundedIntegers::BoundedIntegers(context::Context* c, QuantifiersEngine* qe) :
+QuantifiersModule(qe), d_assertions(c){
+
+}
+
+bool BoundedIntegers::isBound( Node f, Node v ) {
+ return std::find( d_set[f].begin(), d_set[f].end(), v )!=d_set[f].end();
+}
+
+bool BoundedIntegers::hasNonBoundVar( Node f, Node b ) {
+ if( b.getKind()==BOUND_VARIABLE ){
+ if( !isBound( f, b ) ){
+ return true;
+ }
+ }else{
+ for( unsigned i=0; i<b.getNumChildren(); i++ ){
+ if( hasNonBoundVar( f, b[i] ) ){
+ return true;
+ }
+ }
+ }
+ return false;
+}
+
+void BoundedIntegers::processLiteral( Node f, Node lit, bool pol,
+ std::map< int, std::map< Node, Node > >& bound_lit_map,
+ std::map< int, std::map< Node, bool > >& bound_lit_pol_map ) {
+ if( lit.getKind()==GEQ && lit[0].getType().isInteger() ){
+ std::map< Node, Node > msum;
+ if (QuantArith::getMonomialSumLit( lit, msum )){
+ Trace("bound-int-debug") << "Literal (polarity = " << pol << ") " << lit << " is monomial sum : " << std::endl;
+ for(std::map< Node, Node >::iterator it = msum.begin(); it != msum.end(); ++it ){
+ Trace("bound-int-debug") << " ";
+ if( !it->second.isNull() ){
+ Trace("bound-int-debug") << it->second;
+ if( !it->first.isNull() ){
+ Trace("bound-int-debug") << " * ";
+ }
+ }
+ if( !it->first.isNull() ){
+ Trace("bound-int-debug") << it->first;
+ }
+ Trace("bound-int-debug") << std::endl;
+ }
+ Trace("bound-int-debug") << std::endl;
+ for( std::map< Node, Node >::iterator it = msum.begin(); it != msum.end(); ++it ){
+ if ( !it->first.isNull() && it->first.getKind()==BOUND_VARIABLE && !isBound( f, it->first ) ){
+ Node veq;
+ if( QuantArith::isolate( it->first, msum, veq, GEQ ) ){
+ Node n1 = veq[0];
+ Node n2 = veq[1];
+ if(pol){
+ //flip
+ n1 = veq[1];
+ n2 = veq[0];
+ if( n1.getKind()==BOUND_VARIABLE ){
+ n2 = QuantArith::offset( n2, 1 );
+ }else{
+ n1 = QuantArith::offset( n1, -1 );
+ }
+ veq = NodeManager::currentNM()->mkNode( GEQ, n1, n2 );
+ }
+ Trace("bound-int-debug") << "Isolated for " << it->first << " : (" << n1 << " >= " << n2 << ")" << std::endl;
+ Node bv = n1.getKind()==BOUND_VARIABLE ? n1 : n2;
+ if( !isBound( f, bv ) ){
+ if( !hasNonBoundVar( f, n1.getKind()==BOUND_VARIABLE ? n2 : n1 ) ) {
+ Trace("bound-int-debug") << "The bound is relevant." << std::endl;
+ int loru = n1.getKind()==BOUND_VARIABLE ? 0 : 1;
+ d_bounds[loru][f][bv] = (n1.getKind()==BOUND_VARIABLE ? n2 : n1);
+ bound_lit_map[loru][bv] = lit;
+ bound_lit_pol_map[loru][bv] = pol;
+ }
+ }
+ }
+ }
+ }
+ }
+ }else if( lit.getKind()==LEQ || lit.getKind()==LT || lit.getKind()==GT ) {
+ Message() << "BoundedIntegers : Bad kind for literal : " << lit << std::endl;
+ exit(0);
+ }
+}
+
+void BoundedIntegers::process( Node f, Node n, bool pol,
+ std::map< int, std::map< Node, Node > >& bound_lit_map,
+ std::map< int, std::map< Node, bool > >& bound_lit_pol_map ){
+ if( (( n.getKind()==IMPLIES || n.getKind()==OR) && pol) || (n.getKind()==AND && !pol) ){
+ for( unsigned i=0; i<n.getNumChildren(); i++) {
+ bool newPol = n.getKind()==IMPLIES && i==0 ? !pol : pol;
+ process( f, n[i], newPol, bound_lit_map, bound_lit_pol_map );
+ }
+ }else if( n.getKind()==NOT ){
+ process( f, n[0], !pol, bound_lit_map, bound_lit_pol_map );
+ }else {
+ processLiteral( f, n, pol, bound_lit_map, bound_lit_pol_map );
+ }
+}
+
+void BoundedIntegers::check( Theory::Effort e ) {
+
+}
+
+
+void BoundedIntegers::addLiteralFromRange( Node lit, Node r ) {
+ d_lit_to_ranges[lit].push_back(r);
+ //check if it is already asserted?
+ if(d_assertions.find(lit)!=d_assertions.end()){
+ d_rms[r]->assertNode( d_assertions[lit] ? lit : lit.negate() );
+ }
+}
+
+void BoundedIntegers::registerQuantifier( Node f ) {
+ Trace("bound-int") << "Register quantifier " << f << std::endl;
+ bool hasIntType = false;
+ int finiteTypes = 0;
+ std::map< Node, int > numMap;
+ for( unsigned i=0; i<f[0].getNumChildren(); i++) {
+ numMap[f[0][i]] = i;
+ if( f[0][i].getType().isInteger() ){
+ hasIntType = true;
+ }
+ else if( f[0][i].getType().isSort() ){
+ finiteTypes++;
+ }
+ }
+ if( hasIntType ){
+ bool success;
+ do{
+ std::map< int, std::map< Node, Node > > bound_lit_map;
+ std::map< int, std::map< Node, bool > > bound_lit_pol_map;
+ success = false;
+ process( f, f[1], true, bound_lit_map, bound_lit_pol_map );
+ for( std::map< Node, Node >::iterator it = d_bounds[0][f].begin(); it != d_bounds[0][f].end(); ++it ){
+ Node v = it->first;
+ if( !isBound(f,v) ){
+ if( d_bounds[1][f].find(v)!=d_bounds[1][f].end() ){
+ d_set[f].push_back(v);
+ d_set_nums[f].push_back(numMap[v]);
+ success = true;
+ //set Attributes on literals
+ for( unsigned b=0; b<2; b++ ){
+ Assert( bound_lit_map[b].find( v )!=bound_lit_map[b].end() );
+ Assert( bound_lit_pol_map[b].find( v )!=bound_lit_pol_map[b].end() );
+ BoundIntLitAttribute bila;
+ bound_lit_map[b][v].setAttribute( bila, bound_lit_pol_map[b][v] ? 1 : 0 );
+ }
+ Trace("bound-int") << "Variable " << v << " is bound because of literals " << bound_lit_map[0][v] << " and " << bound_lit_map[1][v] << std::endl;
+ }
+ }
+ }
+ }while( success );
+ Trace("bound-int") << "Bounds are : " << std::endl;
+ for( unsigned i=0; i<d_set[f].size(); i++) {
+ Node v = d_set[f][i];
+ Node r = NodeManager::currentNM()->mkNode( MINUS, d_bounds[1][f][v], d_bounds[0][f][v] );
+ d_range[f][v] = Rewriter::rewrite( r );
+ Trace("bound-int") << " " << d_bounds[0][f][v] << " <= " << v << " <= " << d_bounds[1][f][v] << " (range is " << d_range[f][v] << ")" << std::endl;
+ }
+ if( d_set[f].size()==(f[0].getNumChildren()-finiteTypes) ){
+ d_bound_quants.push_back( f );
+ for( unsigned i=0; i<d_set[f].size(); i++) {
+ Node v = d_set[f][i];
+ Node r = d_range[f][v];
+ if( quantifiers::TermDb::hasBoundVarAttr(r) ){
+ //introduce a new bound
+ Node new_range = NodeManager::currentNM()->mkSkolem( "bir_$$", r.getType(), "bound for term" );
+ d_nground_range[f][v] = d_range[f][v];
+ d_range[f][v] = new_range;
+ r = new_range;
+ }
+ if( r.getKind()!=CONST_RATIONAL ){
+ if( std::find(d_ranges.begin(), d_ranges.end(), r)==d_ranges.end() ){
+ Trace("bound-int") << "For " << v << ", bounded Integer Module will try to minimize : " << r << " " << r.getKind() << std::endl;
+ d_ranges.push_back( r );
+ d_rms[r] = new RangeModel(this, r, d_quantEngine->getSatContext() );
+ d_rms[r]->initialize();
+ }
+ }
+ }
+ }
+ }
+}
+
+void BoundedIntegers::assertNode( Node n ) {
+ Trace("bound-int-assert") << "Assert " << n << std::endl;
+ Node nlit = n.getKind()==NOT ? n[0] : n;
+ if( d_lit_to_ranges.find(nlit)!=d_lit_to_ranges.end() ){
+ Trace("bound-int-assert") << "This is the bounding literal for " << d_lit_to_ranges[nlit].size() << " ranges." << std::endl;
+ for( unsigned i=0; i<d_lit_to_ranges[nlit].size(); i++) {
+ Node r = d_lit_to_ranges[nlit][i];
+ Trace("bound-int-assert") << " ...this is a bounding literal for " << r << std::endl;
+ d_rms[r]->assertNode( n );
+ }
+ }
+ d_assertions[nlit] = n.getKind()!=NOT;
+}
+
+Node BoundedIntegers::getNextDecisionRequest() {
+ Trace("bound-int-dec") << "bi: Get next decision request?" << std::endl;
+ for( unsigned i=0; i<d_ranges.size(); i++) {
+ Node d = d_rms[d_ranges[i]]->getNextDecisionRequest();
+ if (!d.isNull()) {
+ return d;
+ }
+ }
+ return Node::null();
+}
+
+void BoundedIntegers::getBoundValues( Node f, Node v, RepSetIterator * rsi, Node & l, Node & u ) {
+ l = d_bounds[0][f][v];
+ u = d_bounds[1][f][v];
+ if( d_nground_range[f].find(v)!=d_nground_range[f].end() ){
+ //must create substitution
+ std::vector< Node > vars;
+ std::vector< Node > subs;
+ Trace("bound-int-rsi") << "Get bound value in model of variable " << v << std::endl;
+ for( unsigned i=0; i<d_set[f].size(); i++) {
+ if( d_set[f][i]!=v ){
+ Trace("bound-int-rsi") << "Look up the value for " << d_set[f][i] << " " << rsi->d_var_order[d_set_nums[f][i]] << std::endl;
+ Trace("bound-int-rsi") << "term : " << rsi->getTerm(rsi->d_var_order[d_set_nums[f][i]]) << std::endl;
+ vars.push_back(d_set[f][i]);
+ subs.push_back(rsi->getTerm(rsi->d_var_order[d_set_nums[f][i]]));
+ }else{
+ break;
+ }
+ }
+ Trace("bound-int-rsi") << "Do substitution..." << std::endl;
+ //check if it has been instantiated
+ if (!vars.empty() && !d_bnd_it[f][v].hasInstantiated(subs)){
+ //must add the lemma
+ Node nn = d_nground_range[f][v];
+ nn = nn.substitute( vars.begin(), vars.end(), subs.begin(), subs.end() );
+ Node lem = NodeManager::currentNM()->mkNode( LEQ, nn, d_range[f][v] );
+ Trace("bound-int-lemma") << "*** Add lemma to minimize instantiated non-ground term " << lem << std::endl;
+ d_quantEngine->getOutputChannel().lemma(lem);
+ l = Node::null();
+ u = Node::null();
+ return;
+ }else{
+ u = u.substitute( vars.begin(), vars.end(), subs.begin(), subs.end() );
+ l = l.substitute( vars.begin(), vars.end(), subs.begin(), subs.end() );
+ }
+ }
+ Trace("bound-int-rsi") << "Get value in model for..." << l << " and " << u << std::endl;
+ l = d_quantEngine->getModel()->getCurrentModelValue( l );
+ u = d_quantEngine->getModel()->getCurrentModelValue( u );
+ Trace("bound-int-rsi") << "Value is " << l << " ... " << u << std::endl;
+ return;
+}
+
+bool BoundedIntegers::isGroundRange(Node f, Node v) {
+ return isBoundVar(f,v) && !quantifiers::TermDb::hasBoundVarAttr(getLowerBound(f,v)) && !quantifiers::TermDb::hasBoundVarAttr(getUpperBound(f,v));
+}
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