void StatisicsPropertyintegration::setup()
{
m_char_type = new TypeNode("char_type");
m_char_property = new StatisticsProperty;
m_char_property->setFlags(flag_class);
m_char_type->addProperty("char_prop", m_char_property);
m_char1 = new Entity("1", 1);
m_char1->setType(m_char_type);
m_char_property->install(m_char1, "char_prop");
m_char_property->apply(m_char1);
m_char2 = new Entity("2", 2);
m_char2->setType(m_char_type);
m_char_property->install(m_char2, "char_prop");
m_char_property->apply(m_char2);
}
bool TermEnumeration::isClosedEnumerableType(TypeNode tn)
{
std::unordered_map<TypeNode, bool, TypeNodeHashFunction>::iterator it =
d_typ_closed_enum.find(tn);
if (it == d_typ_closed_enum.end())
{
d_typ_closed_enum[tn] = true;
bool ret = true;
if (tn.isArray() || tn.isSort() || tn.isCodatatype() || tn.isFunction())
{
ret = false;
}
else if (tn.isSet())
{
ret = isClosedEnumerableType(tn.getSetElementType());
}
else if (tn.isDatatype())
{
const Datatype& dt = ((DatatypeType)(tn).toType()).getDatatype();
for (unsigned i = 0; i < dt.getNumConstructors(); i++)
{
for (unsigned j = 0; j < dt[i].getNumArgs(); j++)
{
TypeNode ctn = TypeNode::fromType(dt[i][j].getRangeType());
if (tn != ctn && !isClosedEnumerableType(ctn))
{
ret = false;
break;
}
}
if (!ret)
{
break;
}
}
}
// other parametric sorts go here
d_typ_closed_enum[tn] = ret;
return ret;
}
else
{
return it->second;
}
}
void Entitytest::test_setAttr_type()
{
TestProperty * type_property = new TestProperty;
type_property->data() = 17;
type_property->flags() &= flag_class;
m_type->addProperty("test_int_property", type_property);
PropertyBase * pb = m_entity->setAttr("test_int_property", 24);
ASSERT_NOT_NULL(pb);
ASSERT_NOT_EQUAL(type_property, pb);
ASSERT_TRUE((pb->flags() & flag_class) == 0);
auto * int_property = dynamic_cast<TestProperty *>(pb);
ASSERT_NOT_NULL(int_property);
ASSERT_EQUAL(int_property->data(), 24);
ASSERT_TRUE(!m_TestProperty_install_called);
ASSERT_TRUE(m_TestProperty_apply_called);
}
Node DatatypesEnumerator::getTermEnum( TypeNode tn, unsigned i ){
Node ret;
if( i<d_terms[tn].size() ){
ret = d_terms[tn][i];
}else{
Debug("dt-enum-debug") << "get term enum " << tn << " " << i << std::endl;
std::map< TypeNode, unsigned >::iterator it = d_te_index.find( tn );
unsigned tei;
if( it==d_te_index.end() ){
//initialize child enumerator for type
tei = d_children.size();
d_te_index[tn] = tei;
if( tn.isDatatype() && d_has_debruijn ){
//must indicate that this is a child enumerator (do not normalize constants for it)
DatatypesEnumerator * dte = new DatatypesEnumerator( tn, true );
d_children.push_back( TypeEnumerator( dte ) );
}else{
d_children.push_back( TypeEnumerator( tn ) );
}
d_terms[tn].push_back( *d_children[tei] );
}else{
tei = it->second;
}
//enumerate terms until index is reached
while( i>=d_terms[tn].size() ){
++d_children[tei];
if( d_children[tei].isFinished() ){
Debug("dt-enum-debug") << "...fail term enum " << tn << " " << i << std::endl;
return Node::null();
}
d_terms[tn].push_back( *d_children[tei] );
}
Debug("dt-enum-debug") << "...return term enum " << tn << " " << i << " : " << d_terms[tn][i] << std::endl;
ret = d_terms[tn][i];
}
return ret;
}
TypeNode* TypeNameNode::getTypeNode(TemplateArguments* templateArguments)
{
//assert(0 == templateArguments || templateArguments->m_classTypeNode->isTemplateClassInstance());
assert(0 != m_startTypeNode);
TypeNode* result = 0;
if (0 == m_typeNode)// under template parameter
{
assert(templateArguments && m_startTypeNode
&& (m_startTypeNode->isTemplateParameter() || m_startTypeNode->isTypedef()) );
if (templateArguments->m_classTypeNode->isClass())
{
return 0;
}
TypeNode* actualStartTypeNode = m_startTypeNode->getActualTypeNode(templateArguments);
assert(actualStartTypeNode);
std::vector<ScopeNameNode*> scopeNameNodes;
m_scopeNameList->collectIdentifyNodes(scopeNameNodes);
if (scopeNameNodes.size() == 1)
{
result = actualStartTypeNode;
}
else
{
scopeNameNodes.erase(scopeNameNodes.begin());
TypeNode* initialTypeTreeNode = 0;
TypeNode* finalTypeTreeNode = 0;
if (g_typeTree.findNodeByScopeNames(initialTypeTreeNode, finalTypeTreeNode,
scopeNameNodes, actualStartTypeNode, templateArguments))
{
assert(finalTypeTreeNode);
result = finalTypeTreeNode;
}
}
}
else if (m_typeNode->isTemplateParameter())
{
assert(templateArguments);
result = templateArguments->findTypeNode(m_scopeNameList->m_scopeName->m_name->m_str);
}
else if (m_typeNode->isTemplateClass())
{
assert(templateArguments);
if (m_scopeNameList->m_scopeName->isTemplateForm())
{
result = g_typeTree.findNodeByScopeName(m_scopeNameList->m_scopeName, m_typeNode->m_enclosing, templateArguments);
}
else
{
assert(m_scopeNameList->m_scopeName->m_name->m_str == templateArguments->m_className);
result = templateArguments->m_classTypeNode;
}
}
else if (m_typeNode->isUnderTemplateClass())
{
assert(templateArguments);
if (m_startTypeNode->isUnderTemplateClass())
{
std::vector<TypeNode*> typeNodes;
TypeNode* typeNode = m_typeNode;
while (typeNode)
{
if (typeNode->isTemplateClass())
{
break;
}
typeNodes.push_back(typeNode);
typeNode = typeNode->m_enclosing;
}
assert(typeNode->isTemplateClass() && typeNode->m_name == templateArguments->m_className);
typeNode = templateArguments->m_classTypeNode;
auto it = typeNodes.rbegin();
auto end = typeNodes.rend();
for (; it != end; ++it)
{
TypeNode* tempTypeNode = *it;
typeNode = typeNode->getChildNode(tempTypeNode->m_name);
assert(typeNode);
}
if (typeNode->isTypedef())
{
TypeNode* actualTypeNode = typeNode->getActualTypeNode(templateArguments);
if (actualTypeNode->isTemplateParameter())
{
typeNode = templateArguments->findTypeNode(actualTypeNode->m_name);
assert(0 != typeNode);
}
}
result = typeNode;
}
else
{
std::vector<ScopeNameNode*> scopeNameNodes;
m_scopeNameList->collectIdentifyNodes(scopeNameNodes);
TypeNode* initialTypeTreeNode = 0;
TypeNode* finalTypeTreeNode = 0;
if (m_startTypeNode->isTemplateClass() && !scopeNameNodes[0]->isTemplateForm())
{
assert(m_startTypeNode->m_name == templateArguments->m_className);
scopeNameNodes.erase(scopeNameNodes.begin());
if (g_typeTree.findNodeByScopeNames(initialTypeTreeNode, finalTypeTreeNode,
scopeNameNodes, templateArguments->m_classTypeNode, templateArguments))
{
result = finalTypeTreeNode;
}
}
else
{
if (g_typeTree.findNodeByScopeNames(initialTypeTreeNode, finalTypeTreeNode,
scopeNameNodes, m_startTypeNode->m_enclosing, templateArguments))
{
result = finalTypeTreeNode;
}
}
}
}
else
{
assert(m_typeNode->isPredefinedType() ||
m_typeNode->isEnum() ||
m_typeNode->isClass() ||
m_typeNode->isTemplateClassInstance() ||
m_typeNode->isTypedef() ||
m_typeNode->isTypeDeclaration());
result = m_typeNode;
}
if(0 == result)
{
RaiseError_InvalidTypeName(m_scopeNameList);
}
return result;
}
void TypeNameNode::getRelativeName(std::string& typeName, ScopeNode* scopeNode)
{
assert(m_startTypeNode && scopeNode);
if (0 == m_scopeNameList)// predefined type
{
m_typeNode->getFullName(typeName);
}
else
{
if (m_typeNode)
{
MemberNode* memberNode = m_typeNode->getSyntaxNode();
if (memberNode && memberNode->m_nativeName)
{
memberNode->getNativeName(typeName, 0);
return;
}
}
if (m_scopeNameList->isGlobal())
{
m_scopeNameList->getString(typeName);
}
else
{
TypeNode* scopeTypeNode = scopeNode->getTypeNode();
std::vector<TypeNode*> enclosings;
m_startTypeNode->getEnclosings(enclosings);
std::vector<TypeNode*> scopeEnclosings;
scopeTypeNode->getEnclosings(scopeEnclosings);
scopeEnclosings.push_back(scopeTypeNode);
auto it = enclosings.begin();
auto end = enclosings.end();
auto it2 = scopeEnclosings.begin();
auto end2 = scopeEnclosings.end();
for (; it2 != end2; ++it2)
{
if (it == end)
{
break;
}
if (*it != *it2)
{
break;
}
++it;
}
typeName.clear();
for (; it != end; ++it)
{
TypeNode* typeNode = *it;
std::string localName;
typeNode->getLocalName(localName);
typeName += localName + "::";
}
std::string str;
m_scopeNameList->getString(str);
typeName += str;
}
}
}
TypeCategory TemplateParameterTypeNode::getTypeCategory(TemplateArguments* templateArguments)
{
TypeNode* actualTypeNode = templateArguments->findTypeNode(m_name);
return actualTypeNode->getTypeCategory(templateArguments);
}
void TypeNodeProvider::value(Atlas::Message::Element& value, const TypeNode& type) const
{
if (m_attribute_name == "name") {
value = type.name();
}
}
Node DtInstantiator::solve_dt(Node v, Node a, Node b, Node sa, Node sb)
{
Trace("cegqi-arith-debug2") << "Solve dt : " << v << " " << a << " " << b
<< " " << sa << " " << sb << std::endl;
Node ret;
if (!a.isNull() && a == v)
{
ret = sb;
}
else if (!b.isNull() && b == v)
{
ret = sa;
}
else if (!a.isNull() && a.getKind() == APPLY_CONSTRUCTOR)
{
if (!b.isNull() && b.getKind() == APPLY_CONSTRUCTOR)
{
if (a.getOperator() == b.getOperator())
{
for (unsigned i = 0, nchild = a.getNumChildren(); i < nchild; i++)
{
Node s = solve_dt(v, a[i], b[i], sa[i], sb[i]);
if (!s.isNull())
{
return s;
}
}
}
}
else
{
NodeManager* nm = NodeManager::currentNM();
unsigned cindex = Datatype::indexOf(a.getOperator().toExpr());
TypeNode tn = a.getType();
const Datatype& dt = static_cast<DatatypeType>(tn.toType()).getDatatype();
for (unsigned i = 0, nchild = a.getNumChildren(); i < nchild; i++)
{
Node nn = nm->mkNode(
APPLY_SELECTOR_TOTAL,
Node::fromExpr(dt[cindex].getSelectorInternal(tn.toType(), i)),
sb);
Node s = solve_dt(v, a[i], Node::null(), sa[i], nn);
if (!s.isNull())
{
return s;
}
}
}
}
else if (!b.isNull() && b.getKind() == APPLY_CONSTRUCTOR)
{
// flip sides
return solve_dt(v, b, a, sb, sa);
}
if (!ret.isNull())
{
// ensure does not contain v
if (expr::hasSubterm(ret, v))
{
ret = Node::null();
}
}
return ret;
}
void setup()
{
m_inheritance = new Inheritance();
//Set up testing environment for Type/Soft properties
m_b1 = new TestEntity("1", 1);
add_entity(m_b1);
m_thingType = new TypeNode("thing");
types["thing"] = m_thingType;
m_barrelType = new TypeNode("barrel");
m_barrelType->setParent(m_thingType);
types["barrel"] = m_barrelType;
m_b1->setType(m_barrelType);
m_b1->setProperty("mass", new SoftProperty(Element(30)));
m_b1->setProperty("burn_speed", new SoftProperty(Element(0.3)));
m_b1->setProperty("isVisible", new SoftProperty(Element(true)));
m_b2 = new Entity("2", 2);
add_entity(m_b2);
m_b2->setProperty("mass", new SoftProperty(Element(20)));
m_b2->setProperty("burn_speed", new SoftProperty(0.25));
m_b2->setType(m_barrelType);
m_b2->setProperty("isVisible", new SoftProperty(Element(false)));
m_b3 = new Entity("3", 3);
add_entity(m_b3);
m_b3->setProperty("mass", new SoftProperty(Element(25)));
m_b3->setProperty("burn_speed", new SoftProperty(Element(0.25)));
m_b3->setType(m_barrelType);
m_boulderType = new TypeNode("boulder");
types["boulder"] = m_boulderType;
m_bl1 = new Entity("4", 4);
add_entity(m_bl1);
m_bl1->setProperty("mass", new SoftProperty(Element(25)));
m_bl1->setType(m_boulderType);
SoftProperty* prop1 = new SoftProperty();
prop1->set(std::vector<Element>{25.0, 20.0});
m_bl1->setProperty("float_list", prop1);
SoftProperty* list_prop2 = new SoftProperty();
list_prop2->set(std::vector<Element>{"foo", "bar"});
m_bl1->setProperty("string_list", list_prop2);
// Create an entity-related memory map
Atlas::Message::MapType entity_memory_map{{"disposition", 25}};
m_memory.emplace("1", entity_memory_map);
//b1 contains bl1 which contains b3
m_b1_container = new LocatedEntitySet;
m_b1_container->insert(m_bl1);
m_bl1->m_location.m_parent = m_b1;
m_b1->m_contains = m_b1_container;
m_b1->test_setDomain(new TestDomain(*m_b1));
m_bl1_container = new LocatedEntitySet;
m_bl1_container->insert(m_b3);
m_b3->m_location.m_parent = m_bl1;
m_bl1->m_contains = m_bl1_container;
//Set up testing environment for Outfit property
m_glovesType = new TypeNode("gloves");
types["gloves"] = m_glovesType;
m_bootsType = new TypeNode("boots");
m_characterType = new TypeNode("character");
types["character"] = m_characterType;
TypeNode* m_clothType = new TypeNode("cloth");
types["cloth"] = m_clothType;
TypeNode* m_leatherType = new TypeNode("leather");
m_glovesEntity = new Entity("5", 5);
add_entity(m_glovesEntity);
m_glovesEntity->setType(m_glovesType);
m_glovesEntity->setProperty("color", new SoftProperty("brown"));
m_glovesEntity->setProperty("mass", new SoftProperty(5));
//Mark it with a "reach" so we can use it in the "can_reach ... with" tests
auto reachProp = new Property<double>();
reachProp->data() = 10.0f;
m_glovesEntity->setProperty("reach", reachProp);
m_bootsEntity = new Entity("6", 6);
add_entity(m_bootsEntity);
m_bootsEntity->setType(m_bootsType);
m_bootsEntity->setProperty("color", new SoftProperty("black"));
m_bootsEntity->setProperty("mass", new SoftProperty(10));
m_cloth = new Entity("8", 8);
add_entity(m_cloth);
m_cloth->setType(m_clothType);
m_cloth->setProperty("color", new SoftProperty("green"));
m_leather = new Entity("9", 9);
add_entity(m_leather);
m_leather->setType(m_leatherType);
m_leather->setProperty("color", new SoftProperty("pink"));
//The m_cloth entity is attached to the gloves by the "thumb" attachment
{
auto attachedProp = new SoftProperty();
attachedProp->data() = Atlas::Message::MapType{{"$eid", m_cloth->getId()}};
m_glovesEntity->setProperty("attached_thumb", attachedProp);
auto plantedOnProp = new PlantedOnProperty();
plantedOnProp->data().entity = WeakEntityRef(m_glovesEntity.get());
m_cloth->setProperty("planted_on", plantedOnProp);
}
m_ch1 = new Entity("7", 7);
add_entity(m_ch1);
m_ch1->setType(m_characterType);
//The m_glovesEntity entity is attached to the m_ch1 by the "hand_primary" attachment
{
auto attachedHandPrimaryProp = new SoftProperty();
attachedHandPrimaryProp->data() = Atlas::Message::MapType{{"$eid", m_glovesEntity->getId()}};
m_ch1->setProperty("attached_hand_primary", attachedHandPrimaryProp);
}
{
auto plantedOnProp = new PlantedOnProperty();
plantedOnProp->data().entity = WeakEntityRef(m_ch1.get());
m_glovesEntity->setProperty("planted_on", plantedOnProp);
}
BBoxProperty* bbox1 = new BBoxProperty;
bbox1->set((std::vector<Element>{-1, -3, -2, 1, 3, 2}));
m_b1->setProperty("bbox", bbox1);
BBoxProperty* bbox2 = new BBoxProperty;
bbox2->set(std::vector<Element>{-3, -2, -1, 1, 3, 2});
m_bl1->setProperty("bbox", bbox2);
m_cloth->setProperty("bbox", bbox1->copy());
}
PreprocessingPassResult SygusAbduct::applyInternal(
AssertionPipeline* assertionsToPreprocess)
{
NodeManager* nm = NodeManager::currentNM();
Trace("sygus-abduct") << "Run sygus abduct..." << std::endl;
Trace("sygus-abduct-debug") << "Collect symbols..." << std::endl;
std::unordered_set<Node, NodeHashFunction> symset;
std::vector<Node>& asserts = assertionsToPreprocess->ref();
// do we have any assumptions, e.g. via check-sat-assuming?
bool usingAssumptions = (assertionsToPreprocess->getNumAssumptions() > 0);
// The following is our set of "axioms". We construct this set only when the
// usingAssumptions (above) is true. In this case, our input formula is
// partitioned into Fa ^ Fc as described in the header of this class, where:
// - The conjunction of assertions marked as assumptions are the negated
// conjecture Fc, and
// - The conjunction of all other assertions are the axioms Fa.
std::vector<Node> axioms;
for (size_t i = 0, size = asserts.size(); i < size; i++)
{
expr::getSymbols(asserts[i], symset);
// if we are not an assumption, add it to the set of axioms
if (usingAssumptions && i < assertionsToPreprocess->getAssumptionsStart())
{
axioms.push_back(asserts[i]);
}
}
Trace("sygus-abduct-debug")
<< "...finish, got " << symset.size() << " symbols." << std::endl;
Trace("sygus-abduct-debug") << "Setup symbols..." << std::endl;
std::vector<Node> syms;
std::vector<Node> vars;
std::vector<Node> varlist;
std::vector<TypeNode> varlistTypes;
for (const Node& s : symset)
{
TypeNode tn = s.getType();
if (tn.isFirstClass())
{
std::stringstream ss;
ss << s;
Node var = nm->mkBoundVar(tn);
syms.push_back(s);
vars.push_back(var);
Node vlv = nm->mkBoundVar(ss.str(), tn);
varlist.push_back(vlv);
varlistTypes.push_back(tn);
}
}
Trace("sygus-abduct-debug") << "...finish" << std::endl;
Trace("sygus-abduct-debug") << "Make abduction predicate..." << std::endl;
// make the abduction predicate to synthesize
TypeNode abdType = varlistTypes.empty() ? nm->booleanType()
: nm->mkPredicateType(varlistTypes);
Node abd = nm->mkBoundVar("A", abdType);
Trace("sygus-abduct-debug") << "...finish" << std::endl;
Trace("sygus-abduct-debug") << "Make abduction predicate app..." << std::endl;
std::vector<Node> achildren;
achildren.push_back(abd);
achildren.insert(achildren.end(), vars.begin(), vars.end());
Node abdApp = vars.empty() ? abd : nm->mkNode(APPLY_UF, achildren);
Trace("sygus-abduct-debug") << "...finish" << std::endl;
Trace("sygus-abduct-debug") << "Set attributes..." << std::endl;
// set the sygus bound variable list
Node abvl = nm->mkNode(BOUND_VAR_LIST, varlist);
abd.setAttribute(theory::SygusSynthFunVarListAttribute(), abvl);
Trace("sygus-abduct-debug") << "...finish" << std::endl;
Trace("sygus-abduct-debug") << "Make conjecture body..." << std::endl;
Node input = asserts.size() == 1 ? asserts[0] : nm->mkNode(AND, asserts);
input = input.substitute(syms.begin(), syms.end(), vars.begin(), vars.end());
// A(x) => ~input( x )
input = nm->mkNode(OR, abdApp.negate(), input.negate());
Trace("sygus-abduct-debug") << "...finish" << std::endl;
Trace("sygus-abduct-debug") << "Make conjecture..." << std::endl;
Node res = input.negate();
if (!vars.empty())
{
Node bvl = nm->mkNode(BOUND_VAR_LIST, vars);
// exists x. ~( A( x ) => ~input( x ) )
res = nm->mkNode(EXISTS, bvl, res);
}
// sygus attribute
Node sygusVar = nm->mkSkolem("sygus", nm->booleanType());
theory::SygusAttribute ca;
sygusVar.setAttribute(ca, true);
Node instAttr = nm->mkNode(INST_ATTRIBUTE, sygusVar);
std::vector<Node> iplc;
iplc.push_back(instAttr);
if (!axioms.empty())
{
Node aconj = axioms.size() == 1 ? axioms[0] : nm->mkNode(AND, axioms);
aconj =
aconj.substitute(syms.begin(), syms.end(), vars.begin(), vars.end());
Trace("sygus-abduct") << "---> Assumptions: " << aconj << std::endl;
Node sc = nm->mkNode(AND, aconj, abdApp);
Node vbvl = nm->mkNode(BOUND_VAR_LIST, vars);
sc = nm->mkNode(EXISTS, vbvl, sc);
Node sygusScVar = nm->mkSkolem("sygus_sc", nm->booleanType());
sygusScVar.setAttribute(theory::SygusSideConditionAttribute(), sc);
instAttr = nm->mkNode(INST_ATTRIBUTE, sygusScVar);
// build in the side condition
// exists x. A( x ) ^ input_axioms( x )
// as an additional annotation on the sygus conjecture. In other words,
// the abducts A we procedure must be consistent with our axioms.
iplc.push_back(instAttr);
}
Node instAttrList = nm->mkNode(INST_PATTERN_LIST, iplc);
Node fbvl = nm->mkNode(BOUND_VAR_LIST, abd);
// forall A. exists x. ~( A( x ) => ~input( x ) )
res = nm->mkNode(FORALL, fbvl, res, instAttrList);
Trace("sygus-abduct-debug") << "...finish" << std::endl;
res = theory::Rewriter::rewrite(res);
Trace("sygus-abduct") << "Generate: " << res << std::endl;
Node trueNode = nm->mkConst(true);
assertionsToPreprocess->replace(0, res);
for (size_t i = 1, size = assertionsToPreprocess->size(); i < size; ++i)
{
assertionsToPreprocess->replace(i, trueNode);
}
return PreprocessingPassResult::NO_CONFLICT;
}
void PrintASTVisitor::visit(TypeNode& node)
{
std::cout << indent() << "TypeNode: " << SymbolTable::equelleString(node.type()) << '\n';
}
bool TypeTree::checkTypeNameNode(TypeNode*& initialTypeTreeNode, TypeNode*& finalTypeTreeNode,
ScopeNameListNode* scopeNameListNode, TypeNode* enclosingTypeTreeNode, TemplateArguments* templateArguments)
{
assert(0 == templateArguments || templateArguments->m_classTypeNode->isTemplateClass());
initialTypeTreeNode = 0;
finalTypeTreeNode = 0;
std::vector<ScopeNameNode*> scopeNameNodes;
scopeNameListNode->collectIdentifyNodes(scopeNameNodes);
assert(!scopeNameNodes.empty());
if (0 != templateArguments && !scopeNameListNode->isGlobal())
{
ScopeNameNode* scopeNameNode = scopeNameNodes.front();
if (!scopeNameNode->isTemplateForm())
{
if (scopeNameNode->m_name->m_str == templateArguments->m_className)
{
initialTypeTreeNode = templateArguments->m_classTypeNode;
if (1 == scopeNameNodes.size())
{
//finalTypeTreeNode->isTemplateClass()
finalTypeTreeNode = initialTypeTreeNode;
return true;
}
else
{
//0 == finalTypeTreeNode || finalTypeTreeNode->isUnderTemplateClass()
scopeNameNodes.erase(scopeNameNodes.begin());
TypeNode* tmpTypeNode = 0;
return findNodeByScopeNames(tmpTypeNode, finalTypeTreeNode, scopeNameNodes, initialTypeTreeNode, 0);
}
}
initialTypeTreeNode = templateArguments->findTypeNode(scopeNameNode->m_name->m_str);
if(initialTypeTreeNode)
{
if (1 == scopeNameNodes.size())
{
//finalTypeTreeNode->isTemplateParameter()
finalTypeTreeNode = initialTypeTreeNode;
}
else
{
finalTypeTreeNode = 0;
}
return true;
}
}
}
if (scopeNameListNode->isGlobal())
{
return findNodeByScopeNames(initialTypeTreeNode, finalTypeTreeNode, scopeNameNodes, getRootNamespaceTypeNode(), templateArguments);
}
TypeNode* enclosing = enclosingTypeTreeNode;
while (enclosing)
{
if(findNodeByScopeNames(initialTypeTreeNode, finalTypeTreeNode, scopeNameNodes, enclosing, templateArguments))
{
return true;
}
enclosing = enclosing->getEnclosing();
}
initialTypeTreeNode = 0;
finalTypeTreeNode = 0;
bool result = false;
auto it = m_allNamespaces.begin();
auto end = m_allNamespaces.end();
for (; it != end; ++it)
{
TypeNode* tempInitialTypeTreeNode = 0;
TypeNode* tempFinalTypeTreeNode = 0;
if(findNodeByScopeNames(tempInitialTypeTreeNode, tempFinalTypeTreeNode, scopeNameNodes, *it, templateArguments))
{
if (result)
{
char buf[512];
std::string str;
scopeNameListNode->getString(str);
sprintf_s(buf, "\'%s\' : ambiguous type name could be %s(%d, %d) or %s(%d, %d)",
str.c_str(),
finalTypeTreeNode->m_sourceFile->m_fileName.c_str(),
finalTypeTreeNode->m_identifyNode->m_lineNo,
finalTypeTreeNode->m_identifyNode->m_columnNo,
tempFinalTypeTreeNode->m_sourceFile->m_fileName.c_str(),
tempFinalTypeTreeNode->m_identifyNode->m_lineNo,
tempFinalTypeTreeNode->m_identifyNode->m_columnNo);
ErrorList_AddItem_CurrentFile(scopeNameNodes.back()->m_name->m_lineNo,
scopeNameNodes.back()->m_name->m_columnNo, semantic_error_ambiguous_type_name, buf);
return false;
}
else
{
initialTypeTreeNode = tempInitialTypeTreeNode;
finalTypeTreeNode = tempFinalTypeTreeNode;
result = true;
}
}
}
if (!result)
{
RaiseError_InvalidTypeName(scopeNameListNode);
}
return result;
}
void SortInference::simplify( std::vector< Node >& assertions, bool doSortInference, bool doMonotonicyInference ){
if( doSortInference ){
Trace("sort-inference-proc") << "Calculating sort inference..." << std::endl;
NodeManager* nm = NodeManager::currentNM();
//process all assertions
std::map< Node, int > visited;
for( unsigned i=0; i<assertions.size(); i++ ){
Trace("sort-inference-debug") << "Process " << assertions[i] << std::endl;
std::map< Node, Node > var_bound;
process( assertions[i], var_bound, visited );
}
Trace("sort-inference-proc") << "...done" << std::endl;
for( std::map< Node, int >::iterator it = d_op_return_types.begin(); it != d_op_return_types.end(); ++it ){
Trace("sort-inference") << it->first << " : ";
TypeNode retTn = it->first.getType();
if( !d_op_arg_types[ it->first ].empty() ){
Trace("sort-inference") << "( ";
for( size_t i=0; i<d_op_arg_types[ it->first ].size(); i++ ){
recordSubsort( retTn[i], d_op_arg_types[ it->first ][i] );
printSort( "sort-inference", d_op_arg_types[ it->first ][i] );
Trace("sort-inference") << " ";
}
Trace("sort-inference") << ") -> ";
retTn = retTn[(int)retTn.getNumChildren()-1];
}
recordSubsort( retTn, it->second );
printSort( "sort-inference", it->second );
Trace("sort-inference") << std::endl;
}
for( std::map< Node, std::map< Node, int > >::iterator it = d_var_types.begin(); it != d_var_types.end(); ++it ){
Trace("sort-inference") << "Quantified formula : " << it->first << " : " << std::endl;
for( unsigned i=0; i<it->first[0].getNumChildren(); i++ ){
recordSubsort( it->first[0][i].getType(), it->second[it->first[0][i]] );
printSort( "sort-inference", it->second[it->first[0][i]] );
Trace("sort-inference") << std::endl;
}
Trace("sort-inference") << std::endl;
}
bool rewritten = false;
// determine monotonicity of sorts
Trace("sort-inference-proc") << "Calculating monotonicty for subsorts..."
<< std::endl;
std::map<Node, std::map<int, bool> > visitedm;
for (const Node& a : assertions)
{
Trace("sort-inference-debug") << "Process monotonicity for " << a
<< std::endl;
std::map<Node, Node> var_bound;
processMonotonic(a, true, true, var_bound, visitedm);
}
Trace("sort-inference-proc") << "...done" << std::endl;
Trace("sort-inference") << "We have " << d_sub_sorts.size()
<< " sub-sorts : " << std::endl;
for (unsigned i = 0, size = d_sub_sorts.size(); i < size; i++)
{
printSort("sort-inference", d_sub_sorts[i]);
if (d_type_types.find(d_sub_sorts[i]) != d_type_types.end())
{
Trace("sort-inference") << " is interpreted." << std::endl;
}
else if (d_non_monotonic_sorts.find(d_sub_sorts[i])
== d_non_monotonic_sorts.end())
{
Trace("sort-inference") << " is monotonic." << std::endl;
}
else
{
Trace("sort-inference") << " is not monotonic." << std::endl;
}
}
// simplify all assertions by introducing new symbols wherever necessary
Trace("sort-inference-proc") << "Perform simplification..." << std::endl;
std::map<Node, std::map<TypeNode, Node> > visited2;
for (unsigned i = 0, size = assertions.size(); i < size; i++)
{
Node prev = assertions[i];
std::map<Node, Node> var_bound;
Trace("sort-inference-debug") << "Simplify " << prev << std::endl;
TypeNode tnn;
Node curr = simplifyNode(assertions[i], var_bound, tnn, visited2);
Trace("sort-inference-debug") << "Done." << std::endl;
if (curr != assertions[i])
{
Trace("sort-inference-debug") << "Rewrite " << curr << std::endl;
curr = theory::Rewriter::rewrite(curr);
rewritten = true;
Trace("sort-inference-rewrite") << assertions << std::endl;
Trace("sort-inference-rewrite") << " --> " << curr << std::endl;
PROOF(ProofManager::currentPM()->addDependence(curr, assertions[i]););
assertions[i] = curr;
}
}
void SharedTermsVisitor::visit(TNode current, TNode parent) {
Debug("register") << "SharedTermsVisitor::visit(" << current << "," << parent << ")" << std::endl;
if (Debug.isOn("register::internal")) {
Debug("register::internal") << toString() << std::endl;
}
// Get the theories of the terms
TheoryId currentTheoryId = Theory::theoryOf(current);
TheoryId parentTheoryId = Theory::theoryOf(parent);
#if 0
bool useType = current != parent && currentTheoryId != parentTheoryId;
#else
// Should we use the theory of the type
bool useType = false;
TheoryId typeTheoryId = THEORY_LAST;
if (current != parent) {
if (currentTheoryId != parentTheoryId) {
// If enclosed by different theories it's shared -- in read(a, f(a)) f(a) should be shared with integers
TypeNode type = current.getType();
useType = true;
typeTheoryId = Theory::theoryOf(type);
} else {
TypeNode type = current.getType();
typeTheoryId = Theory::theoryOf(type);
if (typeTheoryId != currentTheoryId) {
if (options::finiteModelFind() && type.isSort()) {
// We're looking for finite models
useType = true;
} else {
Cardinality card = type.getCardinality();
if (card.isFinite()) {
useType = true;
}
}
}
}
}
#endif
Theory::Set visitedTheories = d_visited[current];
Debug("register::internal") << "SharedTermsVisitor::visit(" << current << "," << parent << "): previously registered with " << Theory::setToString(visitedTheories) << std::endl;
if (!Theory::setContains(currentTheoryId, visitedTheories)) {
visitedTheories = Theory::setInsert(currentTheoryId, visitedTheories);
Debug("register::internal") << "SharedTermsVisitor::visit(" << current << "," << parent << "): adding " << currentTheoryId << std::endl;
}
if (!Theory::setContains(parentTheoryId, visitedTheories)) {
visitedTheories = Theory::setInsert(parentTheoryId, visitedTheories);
Debug("register::internal") << "SharedTermsVisitor::visit(" << current << "," << parent << "): adding " << parentTheoryId << std::endl;
}
if (useType) {
//////TheoryId typeTheoryId = Theory::theoryOf(current.getType());
if (!Theory::setContains(typeTheoryId, visitedTheories)) {
visitedTheories = Theory::setInsert(typeTheoryId, visitedTheories);
Debug("register::internal") << "SharedTermsVisitor::visit(" << current << "," << parent << "): adding " << typeTheoryId << std::endl;
}
}
Debug("register::internal") << "SharedTermsVisitor::visit(" << current << "," << parent << "): now registered with " << Theory::setToString(visitedTheories) << std::endl;
// Record the new theories that we visited
d_visited[current] = visitedTheories;
// If there is more than two theories and a new one has been added notify the shared terms database
if (Theory::setDifference(visitedTheories, Theory::setInsert(currentTheoryId))) {
d_sharedTerms.addSharedTerm(d_atom, current, visitedTheories);
}
Assert(d_visited.find(current) != d_visited.end());
Assert(alreadyVisited(current, parent));
}
bool SharedTermsVisitor::alreadyVisited(TNode current, TNode parent) const {
Debug("register::internal") << "SharedTermsVisitor::alreadyVisited(" << current << "," << parent << ")" << std::endl;
if( ( parent.getKind() == kind::FORALL ||
parent.getKind() == kind::EXISTS ||
parent.getKind() == kind::REWRITE_RULE /*||
parent.getKind() == kind::CARDINALITY_CONSTRAINT*/ ) &&
current != parent ) {
Debug("register::internal") << "quantifier:true" << std::endl;
return true;
}
TNodeVisitedMap::const_iterator find = d_visited.find(current);
// If node is not visited at all, just return false
if (find == d_visited.end()) {
Debug("register::internal") << "1:false" << std::endl;
return false;
}
Theory::Set theories = (*find).second;
TheoryId currentTheoryId = Theory::theoryOf(current);
TheoryId parentTheoryId = Theory::theoryOf(parent);
// Should we use the theory of the type
#if 0
bool useType = current != parent && currentTheoryId != parentTheoryId;
#else
bool useType = false;
TheoryId typeTheoryId = THEORY_LAST;
if (current != parent) {
if (currentTheoryId != parentTheoryId) {
// If enclosed by different theories it's shared -- in read(a, f(a)) f(a) should be shared with integers
TypeNode type = current.getType();
useType = true;
typeTheoryId = Theory::theoryOf(type);
} else {
TypeNode type = current.getType();
typeTheoryId = Theory::theoryOf(type);
if (typeTheoryId != currentTheoryId) {
if (options::finiteModelFind() && type.isSort()) {
// We're looking for finite models
useType = true;
} else {
Cardinality card = type.getCardinality();
if (card.isFinite()) {
useType = true;
}
}
}
}
}
#endif
if (Theory::setContains(currentTheoryId, theories)) {
if (Theory::setContains(parentTheoryId, theories)) {
if (useType) {
////TheoryId typeTheoryId = Theory::theoryOf(current.getType());
return Theory::setContains(typeTheoryId, theories);
} else {
return true;
}
} else {
return false;
}
} else {
return false;
}
}
void TheoryEngineModelBuilder::buildModel(Model* m, bool fullModel)
{
TheoryModel* tm = (TheoryModel*)m;
// buildModel with fullModel = true should only be called once in any context
Assert(!tm->d_modelBuilt);
tm->d_modelBuilt = fullModel;
// Reset model
tm->reset();
// Collect model info from the theories
Trace("model-builder") << "TheoryEngineModelBuilder: Collect model info..." << std::endl;
d_te->collectModelInfo(tm, fullModel);
// Loop through all terms and make sure that assignable sub-terms are in the equality engine
eq::EqClassesIterator eqcs_i = eq::EqClassesIterator( &tm->d_equalityEngine );
{
NodeSet cache;
for ( ; !eqcs_i.isFinished(); ++eqcs_i) {
eq::EqClassIterator eqc_i = eq::EqClassIterator((*eqcs_i), &tm->d_equalityEngine);
for ( ; !eqc_i.isFinished(); ++eqc_i) {
checkTerms(*eqc_i, tm, cache);
}
}
}
Trace("model-builder") << "Collect representatives..." << std::endl;
// Process all terms in the equality engine, store representatives for each EC
std::map< Node, Node > assertedReps, constantReps;
TypeSet typeConstSet, typeRepSet, typeNoRepSet;
std::set< TypeNode > allTypes;
eqcs_i = eq::EqClassesIterator(&tm->d_equalityEngine);
for ( ; !eqcs_i.isFinished(); ++eqcs_i) {
// eqc is the equivalence class representative
Node eqc = (*eqcs_i);
Trace("model-builder") << "Processing EC: " << eqc << endl;
Assert(tm->d_equalityEngine.getRepresentative(eqc) == eqc);
TypeNode eqct = eqc.getType();
Assert(assertedReps.find(eqc) == assertedReps.end());
Assert(constantReps.find(eqc) == constantReps.end());
// Loop through terms in this EC
Node rep, const_rep;
eq::EqClassIterator eqc_i = eq::EqClassIterator(eqc, &tm->d_equalityEngine);
for ( ; !eqc_i.isFinished(); ++eqc_i) {
Node n = *eqc_i;
Trace("model-builder") << " Processing Term: " << n << endl;
// Record as rep if this node was specified as a representative
if (tm->d_reps.find(n) != tm->d_reps.end()){
Assert(rep.isNull());
rep = tm->d_reps[n];
Assert(!rep.isNull() );
Trace("model-builder") << " Rep( " << eqc << " ) = " << rep << std::endl;
}
// Record as const_rep if this node is constant
if (n.isConst()) {
Assert(const_rep.isNull());
const_rep = n;
Trace("model-builder") << " ConstRep( " << eqc << " ) = " << const_rep << std::endl;
}
//model-specific processing of the term
tm->addTerm(n);
}
// Assign representative for this EC
if (!const_rep.isNull()) {
// Theories should not specify a rep if there is already a constant in the EC
Assert(rep.isNull() || rep == const_rep);
constantReps[eqc] = const_rep;
typeConstSet.add(eqct.getBaseType(), const_rep);
}
else if (!rep.isNull()) {
assertedReps[eqc] = rep;
typeRepSet.add(eqct.getBaseType(), eqc);
allTypes.insert(eqct);
}
else {
typeNoRepSet.add(eqct, eqc);
allTypes.insert(eqct);
}
}
// Need to ensure that each EC has a constant representative.
Trace("model-builder") << "Processing EC's..." << std::endl;
TypeSet::iterator it;
set<TypeNode>::iterator type_it;
set<Node>::iterator i, i2;
bool changed, unassignedAssignable, assignOne = false;
set<TypeNode> evaluableSet;
// Double-fixed-point loop
// Outer loop handles a special corner case (see code at end of loop for details)
for (;;) {
// Inner fixed-point loop: we are trying to learn constant values for every EC. Each time through this loop, we process all of the
// types by type and may learn some new EC values. EC's in one type may depend on EC's in another type, so we need a fixed-point loop
// to ensure that we learn as many EC values as possible
do {
changed = false;
unassignedAssignable = false;
evaluableSet.clear();
// Iterate over all types we've seen
for (type_it = allTypes.begin(); type_it != allTypes.end(); ++type_it) {
TypeNode t = *type_it;
TypeNode tb = t.getBaseType();
set<Node>* noRepSet = typeNoRepSet.getSet(t);
// 1. Try to evaluate the EC's in this type
if (noRepSet != NULL && !noRepSet->empty()) {
Trace("model-builder") << " Eval phase, working on type: " << t << endl;
bool assignable, evaluable, evaluated;
d_normalizedCache.clear();
for (i = noRepSet->begin(); i != noRepSet->end(); ) {
i2 = i;
++i;
assignable = false;
evaluable = false;
evaluated = false;
eq::EqClassIterator eqc_i = eq::EqClassIterator(*i2, &tm->d_equalityEngine);
for ( ; !eqc_i.isFinished(); ++eqc_i) {
Node n = *eqc_i;
if (isAssignable(n)) {
assignable = true;
}
else {
evaluable = true;
Node normalized = normalize(tm, n, constantReps, true);
if (normalized.isConst()) {
typeConstSet.add(tb, normalized);
constantReps[*i2] = normalized;
Trace("model-builder") << " Eval: Setting constant rep of " << (*i2) << " to " << normalized << endl;
changed = true;
evaluated = true;
noRepSet->erase(i2);
break;
}
}
}
if (!evaluated) {
if (evaluable) {
evaluableSet.insert(tb);
}
if (assignable) {
unassignedAssignable = true;
}
}
}
}
// 2. Normalize any non-const representative terms for this type
set<Node>* repSet = typeRepSet.getSet(t);
if (repSet != NULL && !repSet->empty()) {
Trace("model-builder") << " Normalization phase, working on type: " << t << endl;
d_normalizedCache.clear();
for (i = repSet->begin(); i != repSet->end(); ) {
Assert(assertedReps.find(*i) != assertedReps.end());
Node rep = assertedReps[*i];
Node normalized = normalize(tm, rep, constantReps, false);
Trace("model-builder") << " Normalizing rep (" << rep << "), normalized to (" << normalized << ")" << endl;
if (normalized.isConst()) {
changed = true;
typeConstSet.add(t.getBaseType(), normalized);
constantReps[*i] = normalized;
assertedReps.erase(*i);
i2 = i;
++i;
repSet->erase(i2);
}
else {
if (normalized != rep) {
assertedReps[*i] = normalized;
changed = true;
}
++i;
}
}
}
}
} while (changed);
if (!fullModel || !unassignedAssignable) {
break;
}
// 3. Assign unassigned assignable EC's using type enumeration - assign a value *different* from all other EC's if the type is infinite
// Assign first value from type enumerator otherwise - for finite types, we rely on polite framework to ensure that EC's that have to be
// different are different.
// Only make assignments on a type if:
// 1. fullModel is true
// 2. there are no terms that share the same base type with un-normalized representatives
// 3. there are no terms that share teh same base type that are unevaluated evaluable terms
// Alternatively, if 2 or 3 don't hold but we are in a special deadlock-breaking mode where assignOne is true, go ahead and make one assignment
changed = false;
for (it = typeNoRepSet.begin(); it != typeNoRepSet.end(); ++it) {
set<Node>& noRepSet = TypeSet::getSet(it);
if (noRepSet.empty()) {
continue;
}
TypeNode t = TypeSet::getType(it);
TypeNode tb = t.getBaseType();
if (!assignOne) {
set<Node>* repSet = typeRepSet.getSet(tb);
if (repSet != NULL && !repSet->empty()) {
continue;
}
if (evaluableSet.find(tb) != evaluableSet.end()) {
continue;
}
}
Trace("model-builder") << " Assign phase, working on type: " << t << endl;
bool assignable, evaluable CVC4_UNUSED;
for (i = noRepSet.begin(); i != noRepSet.end(); ) {
i2 = i;
++i;
eq::EqClassIterator eqc_i = eq::EqClassIterator(*i2, &tm->d_equalityEngine);
assignable = false;
evaluable = false;
for ( ; !eqc_i.isFinished(); ++eqc_i) {
Node n = *eqc_i;
if (isAssignable(n)) {
assignable = true;
}
else {
evaluable = true;
}
}
if (assignable) {
Assert(!evaluable || assignOne);
Assert(!t.isBoolean() || (*i2).getKind() == kind::APPLY_UF);
Node n;
if (t.getCardinality().isInfinite()) {
n = typeConstSet.nextTypeEnum(t, true);
}
else {
TypeEnumerator te(t);
n = *te;
}
Assert(!n.isNull());
constantReps[*i2] = n;
Trace("model-builder") << " Assign: Setting constant rep of " << (*i2) << " to " << n << endl;
changed = true;
noRepSet.erase(i2);
if (assignOne) {
assignOne = false;
break;
}
}
}
}
// Corner case - I'm not sure this can even happen - but it's theoretically possible to have a cyclical dependency
// in EC assignment/evaluation, e.g. EC1 = {a, b + 1}; EC2 = {b, a - 1}. In this case, neither one will get assigned because we are waiting
// to be able to evaluate. But we will never be able to evaluate because the variables that need to be assigned are in
// these same EC's. In this case, repeat the whole fixed-point computation with the difference that the first EC
// that has both assignable and evaluable expressions will get assigned.
if (!changed) {
Assert(!assignOne); // check for infinite loop!
assignOne = true;
}
}
#ifdef CVC4_ASSERTIONS
if (fullModel) {
// Assert that all representatives have been converted to constants
for (it = typeRepSet.begin(); it != typeRepSet.end(); ++it) {
set<Node>& repSet = TypeSet::getSet(it);
if (!repSet.empty()) {
Trace("model-builder") << "***Non-empty repSet, size = " << repSet.size() << ", first = " << *(repSet.begin()) << endl;
Assert(false);
}
}
}
#endif /* CVC4_ASSERTIONS */
Trace("model-builder") << "Copy representatives to model..." << std::endl;
tm->d_reps.clear();
std::map< Node, Node >::iterator itMap;
for (itMap = constantReps.begin(); itMap != constantReps.end(); ++itMap) {
tm->d_reps[itMap->first] = itMap->second;
tm->d_rep_set.add(itMap->second);
}
if (!fullModel) {
// Make sure every EC has a rep
for (itMap = assertedReps.begin(); itMap != assertedReps.end(); ++itMap ) {
tm->d_reps[itMap->first] = itMap->second;
tm->d_rep_set.add(itMap->second);
}
for (it = typeNoRepSet.begin(); it != typeNoRepSet.end(); ++it) {
set<Node>& noRepSet = TypeSet::getSet(it);
set<Node>::iterator i;
for (i = noRepSet.begin(); i != noRepSet.end(); ++i) {
tm->d_reps[*i] = *i;
tm->d_rep_set.add(*i);
}
}
}
//modelBuilder-specific initialization
processBuildModel( tm, fullModel );
#ifdef CVC4_ASSERTIONS
if (fullModel) {
// Check that every term evaluates to its representative in the model
for (eqcs_i = eq::EqClassesIterator(&tm->d_equalityEngine); !eqcs_i.isFinished(); ++eqcs_i) {
// eqc is the equivalence class representative
Node eqc = (*eqcs_i);
Node rep;
itMap = constantReps.find(eqc);
if (itMap == constantReps.end() && eqc.getType().isBoolean()) {
rep = tm->getValue(eqc);
Assert(rep.isConst());
}
else {
Assert(itMap != constantReps.end());
rep = itMap->second;
}
eq::EqClassIterator eqc_i = eq::EqClassIterator(eqc, &tm->d_equalityEngine);
for ( ; !eqc_i.isFinished(); ++eqc_i) {
Node n = *eqc_i;
static int repCheckInstance = 0;
++repCheckInstance;
Debug("check-model::rep-checking")
<< "( " << repCheckInstance <<") "
<< "n: " << n << endl
<< "getValue(n): " << tm->getValue(n) << endl
<< "rep: " << rep << endl;
Assert(tm->getValue(*eqc_i) == rep);
}
}
}
#endif /* CVC4_ASSERTIONS */
}
void PrintEquelleASTVisitor::visit(TypeNode& node)
{
std::cout << SymbolTable::equelleString(node.type());
}
Node TheoryModel::getModelValue(TNode n, bool hasBoundVars) const
{
Assert(n.getKind() != kind::FORALL && n.getKind() != kind::EXISTS);
if(n.getKind() == kind::LAMBDA) {
NodeManager* nm = NodeManager::currentNM();
Node body = getModelValue(n[1], true);
// This is a bit ugly, but cache inside simplifier can change, so can't be const
// The ite simplifier is needed to get rid of artifacts created by Boolean terms
body = const_cast<ITESimplifier*>(&d_iteSimp)->simpITE(body);
body = Rewriter::rewrite(body);
return nm->mkNode(kind::LAMBDA, n[0], body);
}
if(n.isConst() || (hasBoundVars && n.getKind() == kind::BOUND_VARIABLE)) {
return n;
}
TypeNode t = n.getType();
if (t.isFunction() || t.isPredicate()) {
if (d_enableFuncModels) {
std::map< Node, Node >::const_iterator it = d_uf_models.find(n);
if (it != d_uf_models.end()) {
// Existing function
return it->second;
}
// Unknown function symbol: return LAMBDA x. c, where c is the first constant in the enumeration of the range type
vector<TypeNode> argTypes = t.getArgTypes();
vector<Node> args;
NodeManager* nm = NodeManager::currentNM();
for (unsigned i = 0; i < argTypes.size(); ++i) {
args.push_back(nm->mkBoundVar(argTypes[i]));
}
Node boundVarList = nm->mkNode(kind::BOUND_VAR_LIST, args);
TypeEnumerator te(t.getRangeType());
return nm->mkNode(kind::LAMBDA, boundVarList, *te);
}
// TODO: if func models not enabled, throw an error?
Unreachable();
}
if (n.getNumChildren() > 0) {
std::vector<Node> children;
if (n.getKind() == APPLY_UF) {
Node op = getModelValue(n.getOperator(), hasBoundVars);
children.push_back(op);
}
else if (n.getMetaKind() == kind::metakind::PARAMETERIZED) {
children.push_back(n.getOperator());
}
//evaluate the children
for (unsigned i = 0; i < n.getNumChildren(); ++i) {
Node val = getModelValue(n[i], hasBoundVars);
children.push_back(val);
}
Node val = Rewriter::rewrite(NodeManager::currentNM()->mkNode(n.getKind(), children));
Assert(hasBoundVars || val.isConst());
return val;
}
if (!d_equalityEngine.hasTerm(n)) {
// Unknown term - return first enumerated value for this type
TypeEnumerator te(n.getType());
return *te;
}
Node val = d_equalityEngine.getRepresentative(n);
Assert(d_reps.find(val) != d_reps.end());
std::map< Node, Node >::const_iterator it = d_reps.find( val );
if( it!=d_reps.end() ){
return it->second;
}else{
return Node::null();
}
}
Node RemoveITE::run(TNode node, std::vector<Node>& output,
IteSkolemMap& iteSkolemMap) {
// Current node
Debug("ite") << "removeITEs(" << node << ")" << endl;
// The result may be cached already
NodeManager *nodeManager = NodeManager::currentNM();
ITECache::iterator i = d_iteCache.find(node);
if(i != d_iteCache.end()) {
Node cachedRewrite = (*i).second;
Debug("ite") << "removeITEs: in-cache: " << cachedRewrite << endl;
return cachedRewrite.isNull() ? Node(node) : cachedRewrite;
}
// If an ITE replace it
if(node.getKind() == kind::ITE) {
TypeNode nodeType = node.getType();
if(!nodeType.isBoolean()) {
// Make the skolem to represent the ITE
Node skolem = nodeManager->mkSkolem("termITE_$$", nodeType, "a variable introduced due to term-level ITE removal");
// The new assertion
Node newAssertion =
nodeManager->mkNode(kind::ITE, node[0], skolem.eqNode(node[1]),
skolem.eqNode(node[2]));
Debug("ite") << "removeITEs(" << node << ") => " << newAssertion << endl;
// Attach the skolem
d_iteCache[node] = skolem;
// Remove ITEs from the new assertion, rewrite it and push it to the output
newAssertion = run(newAssertion, output, iteSkolemMap);
iteSkolemMap[skolem] = output.size();
output.push_back(newAssertion);
// The representation is now the skolem
return skolem;
}
}
// If not an ITE, go deep
if( node.getKind() != kind::FORALL &&
node.getKind() != kind::EXISTS &&
node.getKind() != kind::REWRITE_RULE ) {
vector<Node> newChildren;
bool somethingChanged = false;
if(node.getMetaKind() == kind::metakind::PARAMETERIZED) {
newChildren.push_back(node.getOperator());
}
// Remove the ITEs from the children
for(TNode::const_iterator it = node.begin(), end = node.end(); it != end; ++it) {
Node newChild = run(*it, output, iteSkolemMap);
somethingChanged |= (newChild != *it);
newChildren.push_back(newChild);
}
// If changes, we rewrite
if(somethingChanged) {
Node cachedRewrite = nodeManager->mkNode(node.getKind(), newChildren);
d_iteCache[node] = cachedRewrite;
return cachedRewrite;
} else {
d_iteCache[node] = Node::null();
return node;
}
} else {
d_iteCache[node] = Node::null();
return node;
}
}
virtual void deleteAll() {
type->deleteAll();
}
TypeNode* TypeTree::findNodeByScopeName(ScopeNameNode* scopeNameNode, TypeNode* enclosingTypeTreeNode, TemplateArguments* templateArguments)
{
if (templateArguments && templateArguments->m_classTypeNode->isTemplateClass())//must be TypeNameNode::calcTypeNodes
{
if (scopeNameNode->isTemplateForm())
{
TypeNode* result = enclosingTypeTreeNode->getChildNode(scopeNameNode->m_name->m_str);
if (0 == result || !result->isTemplateClass())
{
return 0;
}
std::vector<TypeNameNode*> paramTypeNameNodes;
scopeNameNode->m_parameterList->collectTypeNameNodes(paramTypeNameNodes);
assert(!paramTypeNameNodes.empty());
if (paramTypeNameNodes.size() != static_cast<ClassTypeNode*>(result)->m_parameterNodes.size())
{
return 0;
}
bool hasUndeteminedType = false;
std::string name = scopeNameNode->m_name->m_str;
name += "<";
auto begin = paramTypeNameNodes.begin();
auto end = paramTypeNameNodes.end();
for (auto it = begin; it != end; ++it)
{
if (it != begin)
{
name += ", ";
}
TypeNameNode* paramTypeNameNode = *it;
assert(paramTypeNameNode->m_startTypeNode);
if (0 == paramTypeNameNode->m_typeNode ||
paramTypeNameNode->m_typeNode->isTemplateParameter() ||
paramTypeNameNode->m_typeNode->isTemplateClass() ||
paramTypeNameNode->m_typeNode->isUnderTemplateClass())
{
hasUndeteminedType = true;
break;
}
else
{
assert(paramTypeNameNode->m_typeNode->isPredefinedType() ||
paramTypeNameNode->m_typeNode->isEnum() ||
paramTypeNameNode->m_typeNode->isClass() ||
paramTypeNameNode->m_typeNode->isTemplateClassInstance() ||
paramTypeNameNode->m_typeNode->isTypedef() ||
paramTypeNameNode->m_typeNode->isTypeDeclaration());
std::string paramName;
paramTypeNameNode->m_typeNode->getActualTypeFullName(paramName);
name += paramName;
}
}
name += ">";
if (!hasUndeteminedType)
{
result = enclosingTypeTreeNode->getChildNode(name);
}
return result;
}
else
{
TypeNode* result = enclosingTypeTreeNode->getChildNode(scopeNameNode->m_name->m_str);
if (0 == result || result->isTemplateClass())
{
return 0;
}
return result;
}
}
else
{
if (scopeNameNode->isTemplateForm())
{
TypeNode* result = enclosingTypeTreeNode->getChildNode(scopeNameNode->m_name->m_str);
if (0 == result || !result->isTemplateClass())
{
return 0;
}
std::vector<TypeNameNode*> paramTypeNameNodes;
scopeNameNode->m_parameterList->collectTypeNameNodes(paramTypeNameNodes);
assert(!paramTypeNameNodes.empty());
if (paramTypeNameNodes.size() != static_cast<ClassTypeNode*>(result)->m_parameterNodes.size())
{
return 0;
}
bool hasUndeteminedType = false;
std::string name = scopeNameNode->m_name->m_str;
name += "<";
auto begin = paramTypeNameNodes.begin();
auto end = paramTypeNameNodes.end();
for (auto it = begin; it != end; ++it)
{
if (it != begin)
{
name += ", ";
}
TypeNameNode* paramTypeNameNode = *it;
TypeNode* paramTypeNode = paramTypeNameNode->getTypeNode(templateArguments);
if(0 == paramTypeNode)
{
return 0;
}
else
{
std::string paramName;
paramTypeNode->getActualTypeFullName(paramName);
name += paramName;
}
}
name += ">";
if (!hasUndeteminedType)
{
result = enclosingTypeTreeNode->getChildNode(name);
}
return result;
}
else
{
TypeNode* result = enclosingTypeTreeNode->getChildNode(scopeNameNode->m_name->m_str);
if (0 == result || result->isTemplateClass())
{
return 0;
}
return result;
}
}
}
//this isolates the atom into solved form
// veq_c * pv <> val + vts_coeff_delta * delta + vts_coeff_inf * inf
// ensures val is Int if pv is Int, and val does not contain vts symbols
int ArithInstantiator::solve_arith( CegInstantiator * ci, Node pv, Node atom, Node& veq_c, Node& val, Node& vts_coeff_inf, Node& vts_coeff_delta ) {
int ires = 0;
Trace("cbqi-inst-debug") << "isolate for " << pv << " in " << atom << std::endl;
std::map< Node, Node > msum;
if( QuantArith::getMonomialSumLit( atom, msum ) ){
Trace("cbqi-inst-debug") << "got monomial sum: " << std::endl;
if( Trace.isOn("cbqi-inst-debug") ){
QuantArith::debugPrintMonomialSum( msum, "cbqi-inst-debug" );
}
TypeNode pvtn = pv.getType();
//remove vts symbols from polynomial
Node vts_coeff[2];
for( unsigned t=0; t<2; t++ ){
if( !d_vts_sym[t].isNull() ){
std::map< Node, Node >::iterator itminf = msum.find( d_vts_sym[t] );
if( itminf!=msum.end() ){
vts_coeff[t] = itminf->second;
if( vts_coeff[t].isNull() ){
vts_coeff[t] = NodeManager::currentNM()->mkConst( Rational( 1 ) );
}
//negate if coefficient on variable is positive
std::map< Node, Node >::iterator itv = msum.find( pv );
if( itv!=msum.end() ){
//multiply by the coefficient we will isolate for
if( itv->second.isNull() ){
vts_coeff[t] = QuantArith::negate(vts_coeff[t]);
}else{
if( !pvtn.isInteger() ){
vts_coeff[t] = NodeManager::currentNM()->mkNode( MULT, NodeManager::currentNM()->mkConst( Rational(-1) / itv->second.getConst<Rational>() ), vts_coeff[t] );
vts_coeff[t] = Rewriter::rewrite( vts_coeff[t] );
}else if( itv->second.getConst<Rational>().sgn()==1 ){
vts_coeff[t] = QuantArith::negate(vts_coeff[t]);
}
}
}
Trace("cbqi-inst-debug") << "vts[" << t << "] coefficient is " << vts_coeff[t] << std::endl;
msum.erase( d_vts_sym[t] );
}
}
}
ires = QuantArith::isolate( pv, msum, veq_c, val, atom.getKind() );
if( ires!=0 ){
Node realPart;
if( Trace.isOn("cbqi-inst-debug") ){
Trace("cbqi-inst-debug") << "Isolate : ";
if( !veq_c.isNull() ){
Trace("cbqi-inst-debug") << veq_c << " * ";
}
Trace("cbqi-inst-debug") << pv << " " << atom.getKind() << " " << val << std::endl;
}
if( options::cbqiAll() ){
// when not pure LIA/LRA, we must check whether the lhs contains pv
if( TermDb::containsTerm( val, pv ) ){
Trace("cbqi-inst-debug") << "fail : contains bad term" << std::endl;
return 0;
}
}
if( pvtn.isInteger() && ( ( !veq_c.isNull() && !veq_c.getType().isInteger() ) || !val.getType().isInteger() ) ){
//redo, split integer/non-integer parts
bool useCoeff = false;
Integer coeff = ci->getQuantifiersEngine()->getTermDatabase()->d_one.getConst<Rational>().getNumerator();
for( std::map< Node, Node >::iterator it = msum.begin(); it != msum.end(); ++it ){
if( it->first.isNull() || it->first.getType().isInteger() ){
if( !it->second.isNull() ){
coeff = coeff.lcm( it->second.getConst<Rational>().getDenominator() );
useCoeff = true;
}
}
}
//multiply everything by this coefficient
Node rcoeff = NodeManager::currentNM()->mkConst( Rational( coeff ) );
std::vector< Node > real_part;
for( std::map< Node, Node >::iterator it = msum.begin(); it != msum.end(); ++it ){
if( useCoeff ){
if( it->second.isNull() ){
msum[it->first] = rcoeff;
}else{
msum[it->first] = Rewriter::rewrite( NodeManager::currentNM()->mkNode( MULT, it->second, rcoeff ) );
}
}
if( !it->first.isNull() && !it->first.getType().isInteger() ){
real_part.push_back( msum[it->first].isNull() ? it->first : NodeManager::currentNM()->mkNode( MULT, msum[it->first], it->first ) );
}
}
//remove delta TODO: check this
vts_coeff[1] = Node::null();
//multiply inf
if( !vts_coeff[0].isNull() ){
vts_coeff[0] = Rewriter::rewrite( NodeManager::currentNM()->mkNode( MULT, rcoeff, vts_coeff[0] ) );
}
realPart = real_part.empty() ? ci->getQuantifiersEngine()->getTermDatabase()->d_zero : ( real_part.size()==1 ? real_part[0] : NodeManager::currentNM()->mkNode( PLUS, real_part ) );
Assert( ci->getOutput()->isEligibleForInstantiation( realPart ) );
//re-isolate
Trace("cbqi-inst-debug") << "Re-isolate..." << std::endl;
ires = QuantArith::isolate( pv, msum, veq_c, val, atom.getKind() );
Trace("cbqi-inst-debug") << "Isolate for mixed Int/Real : " << veq_c << " * " << pv << " " << atom.getKind() << " " << val << std::endl;
Trace("cbqi-inst-debug") << " real part : " << realPart << std::endl;
if( ires!=0 ){
int ires_use = ( msum[pv].isNull() || msum[pv].getConst<Rational>().sgn()==1 ) ? 1 : -1;
val = Rewriter::rewrite( NodeManager::currentNM()->mkNode( ires_use==-1 ? PLUS : MINUS,
NodeManager::currentNM()->mkNode( ires_use==-1 ? MINUS : PLUS, val, realPart ),
NodeManager::currentNM()->mkNode( TO_INTEGER, realPart ) ) ); //TODO: round up for upper bounds?
Trace("cbqi-inst-debug") << "result : " << val << std::endl;
Assert( val.getType().isInteger() );
}
}
}
vts_coeff_inf = vts_coeff[0];
vts_coeff_delta = vts_coeff[1];
Trace("cbqi-inst-debug") << "Return " << veq_c << " * " << pv << " " << atom.getKind() << " " << val << ", vts = (" << vts_coeff_inf << ", " << vts_coeff_delta << ")" << std::endl;
}else{
Trace("cbqi-inst-debug") << "fail : could not get monomial sum" << std::endl;
}
return ires;
}
TypeNode exportTypeInternal(TypeNode n, NodeManager* from, NodeManager* to, ExprManagerMapCollection& vmap) {
Debug("export") << "type: " << n << " " << n.getId() << std::endl;
if(theory::kindToTheoryId(n.getKind()) == theory::THEORY_DATATYPES) {
throw ExportUnsupportedException
("export of types belonging to theory of DATATYPES kinds unsupported");
}
if(n.getMetaKind() == kind::metakind::PARAMETERIZED &&
n.getKind() != kind::SORT_TYPE) {
throw ExportUnsupportedException
("export of PARAMETERIZED-kinded types (other than SORT_KIND) not supported");
}
if(n.getKind() == kind::TYPE_CONSTANT) {
return to->mkTypeConst(n.getConst<TypeConstant>());
} else if(n.getKind() == kind::BITVECTOR_TYPE) {
return to->mkBitVectorType(n.getConst<BitVectorSize>());
} else if(n.getKind() == kind::SUBRANGE_TYPE) {
return to->mkSubrangeType(n.getSubrangeBounds());
}
Type from_t = from->toType(n);
Type& to_t = vmap.d_typeMap[from_t];
if(! to_t.isNull()) {
Debug("export") << "+ mapped `" << from_t << "' to `" << to_t << "'" << std::endl;
return *Type::getTypeNode(to_t);
}
NodeBuilder<> children(to, n.getKind());
if(n.getKind() == kind::SORT_TYPE) {
Debug("export") << "type: operator: " << n.getOperator() << std::endl;
// make a new sort tag in target node manager
Node sortTag = NodeBuilder<0>(to, kind::SORT_TAG);
children << sortTag;
}
for(TypeNode::iterator i = n.begin(), i_end = n.end(); i != i_end; ++i) {
Debug("export") << "type: child: " << *i << std::endl;
children << exportTypeInternal(*i, from, to, vmap);
}
TypeNode out = children.constructTypeNode();// FIXME thread safety
to_t = to->toType(out);
return out;
}/* exportTypeInternal() */
void CoreSolver::buildModel() {
Debug("bv-core") << "CoreSolver::buildModel() \n";
d_modelValues.clear();
TNodeSet constants;
TNodeSet constants_in_eq_engine;
// collect constants in equality engine
eq::EqClassesIterator eqcs_i = eq::EqClassesIterator(&d_equalityEngine);
while (!eqcs_i.isFinished()) {
TNode repr = *eqcs_i;
if (repr.getKind() == kind::CONST_BITVECTOR) {
// must check if it's just the constant
eq::EqClassIterator it(repr, &d_equalityEngine);
if (!(++it).isFinished() || true) {
constants.insert(repr);
constants_in_eq_engine.insert(repr);
}
}
++eqcs_i;
}
// build repr to value map
eqcs_i = eq::EqClassesIterator(&d_equalityEngine);
while (!eqcs_i.isFinished()) {
TNode repr = *eqcs_i;
++eqcs_i;
if (repr.getKind() != kind::VARIABLE &&
repr.getKind() != kind::SKOLEM &&
repr.getKind() != kind::CONST_BITVECTOR &&
!d_bv->isSharedTerm(repr)) {
continue;
}
TypeNode type = repr.getType();
if (type.isBitVector() && repr.getKind()!= kind::CONST_BITVECTOR) {
Debug("bv-core-model") << " processing " << repr <<"\n";
// we need to assign a value for it
TypeEnumerator te(type);
Node val;
do {
val = *te;
++te;
// Debug("bv-core-model") << " trying value " << val << "\n";
// Debug("bv-core-model") << " is in set? " << constants.count(val) << "\n";
// Debug("bv-core-model") << " enumerator done? " << te.isFinished() << "\n";
} while (constants.count(val) != 0 && !(te.isFinished()));
if (te.isFinished() && constants.count(val) != 0) {
// if we cannot enumerate anymore values we just return the lemma stating that
// at least two of the representatives are equal.
std::vector<TNode> representatives;
representatives.push_back(repr);
for (TNodeSet::const_iterator it = constants_in_eq_engine.begin();
it != constants_in_eq_engine.end(); ++it) {
TNode constant = *it;
if (utils::getSize(constant) == utils::getSize(repr)) {
representatives.push_back(constant);
}
}
for (ModelValue::const_iterator it = d_modelValues.begin(); it != d_modelValues.end(); ++it) {
representatives.push_back(it->first);
}
std::vector<Node> equalities;
for (unsigned i = 0; i < representatives.size(); ++i) {
for (unsigned j = i + 1; j < representatives.size(); ++j) {
TNode a = representatives[i];
TNode b = representatives[j];
if (a.getKind() == kind::CONST_BITVECTOR &&
b.getKind() == kind::CONST_BITVECTOR) {
Assert (a != b);
continue;
}
if (utils::getSize(a) == utils::getSize(b)) {
equalities.push_back(utils::mkNode(kind::EQUAL, a, b));
}
}
}
// better off letting the SAT solver split on values
if (equalities.size() > d_lemmaThreshold) {
d_isComplete = false;
return;
}
Node lemma = utils::mkOr(equalities);
d_bv->lemma(lemma);
Debug("bv-core") << " lemma: " << lemma << "\n";
return;
}
Debug("bv-core-model") << " " << repr << " => " << val <<"\n" ;
constants.insert(val);
d_modelValues[repr] = val;
}
}
}
TypeNode NodeManager::getDatatypeForTupleRecord(TypeNode t) {
Assert(t.isTuple() || t.isRecord());
//AJR: not sure why .getBaseType() was used in two cases below,
// disabling this, which is necessary to fix bug 605/667,
// which involves records of INT which were mapped to records of REAL below.
TypeNode tOrig = t;
if(t.isTuple()) {
vector<TypeNode> v;
bool changed = false;
for(size_t i = 0; i < t.getNumChildren(); ++i) {
TypeNode tn = t[i];
TypeNode base;
if(tn.isTuple() || tn.isRecord()) {
base = getDatatypeForTupleRecord(tn);
} else {
base = tn;//.getBaseType();
}
changed = changed || (tn != base);
v.push_back(base);
}
if(changed) {
t = mkTupleType(v);
}
} else {
const Record& r = t.getRecord();
std::vector< std::pair<std::string, Type> > v;
bool changed = false;
const Record::FieldVector& fields = r.getFields();
for(Record::FieldVector::const_iterator i = fields.begin(); i != fields.end(); ++i) {
Type tn = (*i).second;
Type base;
if(tn.isTuple() || tn.isRecord()) {
base = getDatatypeForTupleRecord(TypeNode::fromType(tn)).toType();
} else {
base = tn;//.getBaseType();
}
changed = changed || (tn != base);
v.push_back(std::make_pair((*i).first, base));
}
if(changed) {
t = mkRecordType(Record(v));
}
}
// if the type doesn't have an associated datatype, then make one for it
TypeNode& dtt = d_tupleAndRecordTypes[t];
if(dtt.isNull()) {
if(t.isTuple()) {
Datatype dt("__cvc4_tuple");
DatatypeConstructor c("__cvc4_tuple_ctor");
for(TypeNode::const_iterator i = t.begin(); i != t.end(); ++i) {
c.addArg("__cvc4_tuple_stor", (*i).toType());
}
dt.addConstructor(c);
dtt = TypeNode::fromType(toExprManager()->mkDatatypeType(dt));
Debug("tuprec") << "REWROTE " << t << " to " << dtt << std::endl;
dtt.setAttribute(DatatypeTupleAttr(), tOrig);
} else {
const Record& rec = t.getRecord();
const Record::FieldVector& fields = rec.getFields();
Datatype dt("__cvc4_record");
DatatypeConstructor c("__cvc4_record_ctor");
for(Record::FieldVector::const_iterator i = fields.begin(); i != fields.end(); ++i) {
c.addArg((*i).first, (*i).second);
}
dt.addConstructor(c);
dtt = TypeNode::fromType(toExprManager()->mkDatatypeType(dt));
Debug("tuprec") << "REWROTE " << t << " to " << dtt << std::endl;
dtt.setAttribute(DatatypeRecordAttr(), tOrig);
}
} else {
Debug("tuprec") << "REUSING cached " << t << ": " << dtt << std::endl;
}
Assert(!dtt.isNull());
return dtt;
}
void BoundedIntegers::registerQuantifier( Node f ) {
Trace("bound-int") << "Register quantifier " << f << std::endl;
bool success;
do{
std::map< Node, unsigned > bound_lit_type_map;
std::map< int, std::map< Node, Node > > bound_lit_map;
std::map< int, std::map< Node, bool > > bound_lit_pol_map;
std::map< int, std::map< Node, Node > > bound_int_range_term;
success = false;
process( f, f[1], true, bound_lit_type_map, bound_lit_map, bound_lit_pol_map, bound_int_range_term );
//for( std::map< Node, Node >::iterator it = d_bounds[0][f].begin(); it != d_bounds[0][f].end(); ++it ){
for( std::map< Node, unsigned >::iterator it = bound_lit_type_map.begin(); it != bound_lit_type_map.end(); ++it ){
Node v = it->first;
if( !isBound( f, v ) ){
bool setBoundVar = false;
if( it->second==BOUND_INT_RANGE ){
//must have both
if( bound_lit_map[0].find( v )!=bound_lit_map[0].end() && bound_lit_map[1].find( v )!=bound_lit_map[1].end() ){
setBoundedVar( f, v, BOUND_INT_RANGE );
setBoundVar = true;
success = true;
for( unsigned b=0; b<2; b++ ){
//set the bounds
Assert( bound_int_range_term[b].find( v )!=bound_int_range_term[b].end() );
d_bounds[b][f][v] = bound_int_range_term[b][v];
}
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") << "Variable " << v << " is bound because of int range literals " << bound_lit_map[0][v] << " and " << bound_lit_map[1][v] << std::endl;
}
}else if( it->second==BOUND_SET_MEMBER ){
setBoundedVar( f, v, BOUND_SET_MEMBER );
setBoundVar = true;
d_setm_range[f][v] = bound_lit_map[0][v][1];
Trace("bound-int") << "Variable " << v << " is bound because of set membership literal " << bound_lit_map[0][v] << std::endl;
}
if( setBoundVar ){
//set Attributes on literals
for( unsigned b=0; b<2; b++ ){
if( 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 );
}else{
Assert( it->second!=BOUND_INT_RANGE );
}
}
}
}
}
}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];
if( d_bound_type[f][v]==BOUND_INT_RANGE ){
Trace("bound-int") << " " << d_bounds[0][f][v] << " <= " << v << " <= " << d_bounds[1][f][v] << " (range is " << d_range[f][v] << ")" << std::endl;
}else if( d_bound_type[f][v]==BOUND_SET_MEMBER ){
Trace("bound-int") << " " << v << " in " << d_setm_range[f][v] << std::endl;
}
}
bool bound_success = true;
for( unsigned i=0; i<f[0].getNumChildren(); i++) {
if( d_bound_type[f].find( f[0][i] )==d_bound_type[f].end() ){
TypeNode tn = f[0][i].getType();
if( !tn.isSort() && !getTermDatabase()->mayComplete( tn ) ){
Trace("bound-int-warn") << "Warning : Bounded Integers : Due to quantification on " << f[0][i] << ", could not find bounds for " << f << std::endl;
bound_success = false;
break;
}
}
}
if( bound_success ){
d_bound_quants.push_back( f );
for( unsigned i=0; i<d_set[f].size(); i++) {
Node v = d_set[f][i];
if( d_bound_type[f][v]==BOUND_INT_RANGE || d_bound_type[f][v]==BOUND_SET_MEMBER ){
Node r;
if( d_bound_type[f][v]==BOUND_INT_RANGE ){
r = d_range[f][v];
}else if( d_bound_type[f][v]==BOUND_SET_MEMBER ){
r = NodeManager::currentNM()->mkNode( CARD, d_setm_range[f][v] );
}
bool isProxy = false;
if( r.hasBoundVar() ){
//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;
isProxy = true;
}
if( !r.isConst() ){
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 << std::endl;
d_ranges.push_back( r );
d_rms[r] = new IntRangeModel( this, r, d_quantEngine->getSatContext(), d_quantEngine->getUserContext(), isProxy );
d_rms[r]->initialize();
}
}
}
}
}
}
bool RepSetIterator::initialize(){
for( size_t i=0; i<d_types.size(); i++ ){
d_index.push_back( 0 );
//store default index order
d_index_order.push_back( i );
d_var_order[i] = i;
//store default domain
d_domain.push_back( RepDomain() );
TypeNode tn = d_types[i];
if( tn.isSort() ){
if( !d_rep_set->hasType( tn ) ){
Node var = NodeManager::currentNM()->mkSkolem( "repSet", tn, "is a variable created by the RepSetIterator" );
Trace("mkVar") << "RepSetIterator:: Make variable " << var << " : " << tn << std::endl;
d_rep_set->add( tn, var );
}
}else if( tn.isInteger() ){
bool inc = false;
//check if it is bound
if( d_owner.getKind()==FORALL && d_qe && d_qe->getBoundedIntegers() ){
if( d_qe->getBoundedIntegers()->isBoundVar( d_owner, d_owner[0][i] ) ){
Trace("bound-int-rsi") << "Rep set iterator: variable #" << i << " is bounded integer." << std::endl;
d_enum_type.push_back( ENUM_RANGE );
}else{
inc = true;
}
}else{
inc = true;
}
if( inc ){
//check if it is otherwise bound
if( d_bounds[0].find(i)!=d_bounds[0].end() && d_bounds[1].find(i)!=d_bounds[1].end() ){
Trace("bound-int-rsi") << "Rep set iterator: variable #" << i << " is bounded." << std::endl;
d_enum_type.push_back( ENUM_RANGE );
}else{
Trace("fmf-incomplete") << "Incomplete because of integer quantification of " << d_owner[0][i] << "." << std::endl;
d_incomplete = true;
}
}
//enumerate if the sort is reasonably small, the upper bound of 1000 is chosen arbitrarily for now
}else if( tn.getCardinality().isFinite() && !tn.getCardinality().isLargeFinite() &&
tn.getCardinality().getFiniteCardinality().toUnsignedInt()<=1000 ){
d_rep_set->complete( tn );
}else{
Trace("fmf-incomplete") << "Incomplete because of quantification of type " << tn << std::endl;
d_incomplete = true;
}
if( d_enum_type.size()<=i ){
d_enum_type.push_back( ENUM_DOMAIN_ELEMENTS );
if( d_rep_set->hasType( tn ) ){
for( size_t j=0; j<d_rep_set->d_type_reps[tn].size(); j++ ){
d_domain[i].push_back( j );
}
}else{
return false;
}
}
}
//must set a variable index order based on bounded integers
if (d_owner.getKind()==FORALL && d_qe && d_qe->getBoundedIntegers()) {
Trace("bound-int-rsi") << "Calculating variable order..." << std::endl;
std::vector< int > varOrder;
for( unsigned i=0; i<d_qe->getBoundedIntegers()->getNumBoundVars(d_owner); i++ ){
varOrder.push_back(d_qe->getBoundedIntegers()->getBoundVarNum(d_owner,i));
}
for( unsigned i=0; i<d_owner[0].getNumChildren(); i++) {
if( !d_qe->getBoundedIntegers()->isBoundVar(d_owner, d_owner[0][i])) {
varOrder.push_back(i);
}
}
Trace("bound-int-rsi") << "Variable order : ";
for( unsigned i=0; i<varOrder.size(); i++) {
Trace("bound-int-rsi") << varOrder[i] << " ";
}
Trace("bound-int-rsi") << std::endl;
std::vector< int > indexOrder;
indexOrder.resize(varOrder.size());
for( unsigned i=0; i<varOrder.size(); i++){
indexOrder[varOrder[i]] = i;
}
Trace("bound-int-rsi") << "Will use index order : ";
for( unsigned i=0; i<indexOrder.size(); i++) {
Trace("bound-int-rsi") << indexOrder[i] << " ";
}
Trace("bound-int-rsi") << std::endl;
setIndexOrder(indexOrder);
}
//now reset the indices
for (unsigned i=0; i<d_index.size(); i++) {
if (!resetIndex(i, true)){
break;
}
}
return true;
}
bool RepSetIterator::initialize( RepBoundExt* rext ){
Trace("rsi") << "Initialize rep set iterator..." << std::endl;
for( unsigned v=0; v<d_types.size(); v++ ){
d_index.push_back( 0 );
//store default index order
d_index_order.push_back( v );
d_var_order[v] = v;
//store default domain
//d_domain.push_back( RepDomain() );
d_domain_elements.push_back( std::vector< Node >() );
TypeNode tn = d_types[v];
Trace("rsi") << "Var #" << v << " is type " << tn << "..." << std::endl;
if( tn.isSort() ){
//must ensure uninterpreted type is non-empty.
if( !d_rep_set->hasType( tn ) ){
//FIXME:
// terms in rep_set are now constants which mapped to terms through TheoryModel
// thus, should introduce a constant and a term. for now, just a term.
//Node c = d_qe->getTermDatabase()->getEnumerateTerm( tn, 0 );
Node var = d_qe->getModel()->getSomeDomainElement( tn );
Trace("mkVar") << "RepSetIterator:: Make variable " << var << " : " << tn << std::endl;
d_rep_set->add( tn, var );
}
}
bool inc = true;
//check if it is externally bound
if( rext && rext->setBound( d_owner, v, tn, d_domain_elements[v] ) ){
d_enum_type.push_back( ENUM_DEFAULT );
inc = false;
//builtin: check if it is bound by bounded integer module
}else if( d_owner.getKind()==FORALL && d_qe && d_qe->getBoundedIntegers() ){
if( d_qe->getBoundedIntegers()->isBoundVar( d_owner, d_owner[0][v] ) ){
unsigned bvt = d_qe->getBoundedIntegers()->getBoundVarType( d_owner, d_owner[0][v] );
if( bvt!=quantifiers::BoundedIntegers::BOUND_FINITE ){
d_enum_type.push_back( ENUM_BOUND_INT );
inc = false;
}else{
//will treat in default way
}
}
}
if( !tn.isSort() ){
if( inc ){
if( d_qe->getTermDatabase()->mayComplete( tn ) ){
Trace("rsi") << " do complete, since cardinality is small (" << tn.getCardinality() << ")..." << std::endl;
d_rep_set->complete( tn );
//must have succeeded
Assert( d_rep_set->hasType( tn ) );
}else{
Trace("rsi") << " variable cannot be bounded." << std::endl;
Trace("fmf-incomplete") << "Incomplete because of quantification of type " << tn << std::endl;
d_incomplete = true;
}
}
}
//if we have yet to determine the type of enumeration
if( d_enum_type.size()<=v ){
if( d_rep_set->hasType( tn ) ){
d_enum_type.push_back( ENUM_DEFAULT );
for( unsigned j=0; j<d_rep_set->d_type_reps[tn].size(); j++ ){
//d_domain[v].push_back( j );
d_domain_elements[v].push_back( d_rep_set->d_type_reps[tn][j] );
}
}else{
Assert( d_incomplete );
return false;
}
}
}
//must set a variable index order based on bounded integers
if( d_owner.getKind()==FORALL && d_qe && d_qe->getBoundedIntegers() ){
Trace("bound-int-rsi") << "Calculating variable order..." << std::endl;
std::vector< int > varOrder;
for( unsigned i=0; i<d_qe->getBoundedIntegers()->getNumBoundVars( d_owner ); i++ ){
Node v = d_qe->getBoundedIntegers()->getBoundVar( d_owner, i );
Trace("bound-int-rsi") << " bound var #" << i << " is " << v << std::endl;
varOrder.push_back( d_qe->getTermDatabase()->getVariableNum( d_owner, v ) );
}
for( unsigned i=0; i<d_owner[0].getNumChildren(); i++) {
if( !d_qe->getBoundedIntegers()->isBoundVar(d_owner, d_owner[0][i])) {
varOrder.push_back(i);
}
}
Trace("bound-int-rsi") << "Variable order : ";
for( unsigned i=0; i<varOrder.size(); i++) {
Trace("bound-int-rsi") << varOrder[i] << " ";
}
Trace("bound-int-rsi") << std::endl;
std::vector< int > indexOrder;
indexOrder.resize(varOrder.size());
for( unsigned i=0; i<varOrder.size(); i++){
indexOrder[varOrder[i]] = i;
}
Trace("bound-int-rsi") << "Will use index order : ";
for( unsigned i=0; i<indexOrder.size(); i++) {
Trace("bound-int-rsi") << indexOrder[i] << " ";
}
Trace("bound-int-rsi") << std::endl;
setIndexOrder( indexOrder );
}
//now reset the indices
do_reset_increment( -1, true );
return true;
}
void UnconstrainedSimplifier::processUnconstrained()
{
TNodeSet::iterator it = d_unconstrained.begin(), iend = d_unconstrained.end();
vector<TNode> workList;
for ( ; it != iend; ++it) {
workList.push_back(*it);
}
Node currentSub;
TNode parent;
bool swap;
bool isSigned;
bool strict;
vector<TNode> delayQueueLeft;
vector<Node> delayQueueRight;
TNode current = workList.back();
workList.pop_back();
for (;;) {
Assert(d_visitedOnce.find(current) != d_visitedOnce.end());
parent = d_visitedOnce[current];
if (!parent.isNull()) {
swap = isSigned = strict = false;
switch (parent.getKind()) {
// If-then-else operator - any two unconstrained children makes the parent unconstrained
case kind::ITE: {
Assert(parent[0] == current || parent[1] == current || parent[2] == current);
bool uCond = parent[0] == current || d_unconstrained.find(parent[0]) != d_unconstrained.end();
bool uThen = parent[1] == current || d_unconstrained.find(parent[1]) != d_unconstrained.end();
bool uElse = parent[2] == current || d_unconstrained.find(parent[2]) != d_unconstrained.end();
if ((uCond && uThen) || (uCond && uElse) || (uThen && uElse)) {
if (d_unconstrained.find(parent) == d_unconstrained.end() &&
!d_substitutions.hasSubstitution(parent)) {
++d_numUnconstrainedElim;
if (uThen) {
if (parent[1] != current) {
if (parent[1].isVar()) {
currentSub = parent[1];
}
else {
Assert(d_substitutions.hasSubstitution(parent[1]));
currentSub = d_substitutions.apply(parent[1]);
}
}
else if (currentSub.isNull()) {
currentSub = current;
}
}
else if (parent[2] != current) {
if (parent[2].isVar()) {
currentSub = parent[2];
}
else {
Assert(d_substitutions.hasSubstitution(parent[2]));
currentSub = d_substitutions.apply(parent[2]);
}
}
else if (currentSub.isNull()) {
currentSub = current;
}
current = parent;
}
else {
currentSub = Node();
}
}
else if (uCond) {
Cardinality card = parent.getType().getCardinality();
if (card.isFinite() && !card.isLargeFinite() && card.getFiniteCardinality() == 2) {
// Special case: condition is unconstrained, then and else are different, and total cardinality of the type is 2, then the result
// is unconstrained
Node test;
if (parent.getType().isBoolean()) {
test = Rewriter::rewrite(parent[1].iffNode(parent[2]));
}
else {
test = Rewriter::rewrite(parent[1].eqNode(parent[2]));
}
if (test == NodeManager::currentNM()->mkConst<bool>(false)) {
++d_numUnconstrainedElim;
if (currentSub.isNull()) {
currentSub = current;
}
currentSub = newUnconstrainedVar(parent.getType(), currentSub);
current = parent;
}
}
}
break;
}
// Comparisons that return a different type - assuming domains are larger than 1, any
// unconstrained child makes parent unconstrained as well
case kind::EQUAL:
if (parent[0].getType() != parent[1].getType()) {
TNode other = (parent[0] == current) ? parent[1] : parent[0];
if (current.getType().isSubtypeOf(other.getType())) {
break;
}
}
if( parent[0].getType().isDatatype() ){
TypeNode tn = parent[0].getType();
const Datatype& dt = ((DatatypeType)(tn).toType()).getDatatype();
if( dt.isRecursiveSingleton( tn.toType() ) ){
//domain size may be 1
break;
}
}
case kind::BITVECTOR_COMP:
case kind::LT:
case kind::LEQ:
case kind::GT:
case kind::GEQ:
{
if (d_unconstrained.find(parent) == d_unconstrained.end() &&
!d_substitutions.hasSubstitution(parent)) {
++d_numUnconstrainedElim;
Assert(parent[0] != parent[1] &&
(parent[0] == current || parent[1] == current));
if (currentSub.isNull()) {
currentSub = current;
}
currentSub = newUnconstrainedVar(parent.getType(), currentSub);
current = parent;
}
else {
currentSub = Node();
}
break;
}
// Unary operators that propagate unconstrainedness
case kind::NOT:
case kind::BITVECTOR_NOT:
case kind::BITVECTOR_NEG:
case kind::UMINUS:
++d_numUnconstrainedElim;
Assert(parent[0] == current);
if (currentSub.isNull()) {
currentSub = current;
}
current = parent;
break;
// Unary operators that propagate unconstrainedness and return a different type
case kind::BITVECTOR_EXTRACT:
++d_numUnconstrainedElim;
Assert(parent[0] == current);
if (currentSub.isNull()) {
currentSub = current;
}
currentSub = newUnconstrainedVar(parent.getType(), currentSub);
current = parent;
break;
// Operators returning same type requiring all children to be unconstrained
case kind::AND:
case kind::OR:
case kind::IMPLIES:
case kind::BITVECTOR_AND:
case kind::BITVECTOR_OR:
case kind::BITVECTOR_NAND:
case kind::BITVECTOR_NOR:
{
bool allUnconstrained = true;
for(TNode::iterator child_it = parent.begin(); child_it != parent.end(); ++child_it) {
if (d_unconstrained.find(*child_it) == d_unconstrained.end()) {
allUnconstrained = false;
break;
}
}
if (allUnconstrained) {
if (d_unconstrained.find(parent) == d_unconstrained.end() &&
!d_substitutions.hasSubstitution(parent)) {
++d_numUnconstrainedElim;
if (currentSub.isNull()) {
currentSub = current;
}
current = parent;
}
else {
currentSub = Node();
}
}
}
break;
// Require all children to be unconstrained and different
case kind::BITVECTOR_SHL:
case kind::BITVECTOR_LSHR:
case kind::BITVECTOR_ASHR:
case kind::BITVECTOR_UDIV_TOTAL:
case kind::BITVECTOR_UREM_TOTAL:
case kind::BITVECTOR_SDIV:
case kind::BITVECTOR_SREM:
case kind::BITVECTOR_SMOD: {
bool allUnconstrained = true;
bool allDifferent = true;
for(TNode::iterator child_it = parent.begin(); child_it != parent.end(); ++child_it) {
if (d_unconstrained.find(*child_it) == d_unconstrained.end()) {
allUnconstrained = false;
break;
}
for(TNode::iterator child_it2 = child_it + 1; child_it2 != parent.end(); ++child_it2) {
if (*child_it == *child_it2) {
allDifferent = false;
break;
}
}
}
if (allUnconstrained && allDifferent) {
if (d_unconstrained.find(parent) == d_unconstrained.end() &&
!d_substitutions.hasSubstitution(parent)) {
++d_numUnconstrainedElim;
if (currentSub.isNull()) {
currentSub = current;
}
current = parent;
}
else {
currentSub = Node();
}
}
break;
}
// Requires all children to be unconstrained and different, and returns a different type
case kind::BITVECTOR_CONCAT:
{
bool allUnconstrained = true;
bool allDifferent = true;
for(TNode::iterator child_it = parent.begin(); child_it != parent.end(); ++child_it) {
if (d_unconstrained.find(*child_it) == d_unconstrained.end()) {
allUnconstrained = false;
break;
}
for(TNode::iterator child_it2 = child_it + 1; child_it2 != parent.end(); ++child_it2) {
if (*child_it == *child_it2) {
allDifferent = false;
break;
}
}
}
if (allUnconstrained && allDifferent) {
if (d_unconstrained.find(parent) == d_unconstrained.end() &&
!d_substitutions.hasSubstitution(parent)) {
++d_numUnconstrainedElim;
if (currentSub.isNull()) {
currentSub = current;
}
currentSub = newUnconstrainedVar(parent.getType(), currentSub);
current = parent;
}
else {
currentSub = Node();
}
}
}
break;
// N-ary operators returning same type requiring at least one child to be unconstrained
case kind::PLUS:
case kind::MINUS:
if (current.getType().isInteger() &&
!parent.getType().isInteger()) {
break;
}
case kind::IFF:
case kind::XOR:
case kind::BITVECTOR_XOR:
case kind::BITVECTOR_XNOR:
case kind::BITVECTOR_PLUS:
case kind::BITVECTOR_SUB:
if (d_unconstrained.find(parent) == d_unconstrained.end() &&
!d_substitutions.hasSubstitution(parent)) {
++d_numUnconstrainedElim;
if (currentSub.isNull()) {
currentSub = current;
}
current = parent;
}
else {
currentSub = Node();
}
break;
// Multiplication/division: must be non-integer and other operand must be non-zero
case kind::MULT: {
case kind::DIVISION:
Assert(parent.getNumChildren() == 2);
TNode other;
if (parent[0] == current) {
other = parent[1];
}
else {
Assert(parent[1] == current);
other = parent[0];
}
if (d_unconstrained.find(other) != d_unconstrained.end()) {
if (d_unconstrained.find(parent) == d_unconstrained.end() &&
!d_substitutions.hasSubstitution(parent)) {
if (current.getType().isInteger() && other.getType().isInteger()) {
Assert(parent.getKind() == kind::DIVISION || parent.getType().isInteger());
if (parent.getKind() == kind::DIVISION) {
break;
}
}
++d_numUnconstrainedElim;
if (currentSub.isNull()) {
currentSub = current;
}
current = parent;
}
else {
currentSub = Node();
}
}
else {
// if only the denominator of a division is unconstrained, can't set it to 0 so the result is not unconstrained
if (parent.getKind() == kind::DIVISION && current == parent[1]) {
break;
}
NodeManager* nm = NodeManager::currentNM();
// if we are an integer, the only way we are unconstrained is if we are a MULT by -1
if (current.getType().isInteger()) {
// div/mult by 1 should have been simplified
Assert(other != nm->mkConst<Rational>(1));
if (other == nm->mkConst<Rational>(-1)) {
// div by -1 should have been simplified
Assert(parent.getKind() == kind::MULT);
Assert(parent.getType().isInteger());
}
else {
break;
}
}
else {
// TODO: could build ITE here
Node test = other.eqNode(nm->mkConst<Rational>(0));
if (Rewriter::rewrite(test) != nm->mkConst<bool>(false)) {
break;
}
}
++d_numUnconstrainedElim;
if (currentSub.isNull()) {
currentSub = current;
}
current = parent;
}
break;
}
// Bitvector MULT - current must only appear once in the children:
// all other children must be unconstrained or odd
case kind::BITVECTOR_MULT:
{
bool found = false;
bool done = false;
for(TNode::iterator child_it = parent.begin(); child_it != parent.end(); ++child_it) {
if ((*child_it) == current) {
if (found) {
done = true;
break;
}
found = true;
continue;
}
else if (d_unconstrained.find(*child_it) != d_unconstrained.end()) {
continue;
}
else {
NodeManager* nm = NodeManager::currentNM();
Node extractOp = nm->mkConst<BitVectorExtract>(BitVectorExtract(0,0));
vector<Node> children;
children.push_back(*child_it);
Node test = nm->mkNode(extractOp, children);
BitVector one(1,unsigned(1));
test = test.eqNode(nm->mkConst<BitVector>(one));
if (Rewriter::rewrite(test) != nm->mkConst<bool>(true)) {
done = true;
break;
}
}
}
if (done) {
break;
}
if (d_unconstrained.find(parent) == d_unconstrained.end() &&
!d_substitutions.hasSubstitution(parent)) {
++d_numUnconstrainedElim;
if (currentSub.isNull()) {
currentSub = current;
}
current = parent;
}
else {
currentSub = Node();
}
break;
}
// Uninterpreted function - if domain is infinite, no quantifiers are used, and any child is unconstrained, result is unconstrained
case kind::APPLY_UF:
if (d_logicInfo.isQuantified() || !current.getType().getCardinality().isInfinite()) {
break;
}
if (d_unconstrained.find(parent) == d_unconstrained.end() &&
!d_substitutions.hasSubstitution(parent)) {
++d_numUnconstrainedElim;
if (currentSub.isNull()) {
currentSub = current;
}
if (parent.getType() != current.getType()) {
currentSub = newUnconstrainedVar(parent.getType(), currentSub);
}
current = parent;
}
else {
currentSub = Node();
}
break;
// Array select - if array is unconstrained, so is result
case kind::SELECT:
if (parent[0] == current) {
++d_numUnconstrainedElim;
Assert(current.getType().isArray());
if (currentSub.isNull()) {
currentSub = current;
}
currentSub = newUnconstrainedVar(current.getType().getArrayConstituentType(), currentSub);
current = parent;
}
break;
// Array store - if both store and value are unconstrained, so is resulting store
case kind::STORE:
if (((parent[0] == current &&
d_unconstrained.find(parent[2]) != d_unconstrained.end()) ||
(parent[2] == current &&
d_unconstrained.find(parent[0]) != d_unconstrained.end()))) {
if (d_unconstrained.find(parent) == d_unconstrained.end() &&
!d_substitutions.hasSubstitution(parent)) {
++d_numUnconstrainedElim;
if (parent[0] != current) {
if (parent[0].isVar()) {
currentSub = parent[0];
}
else {
Assert(d_substitutions.hasSubstitution(parent[0]));
currentSub = d_substitutions.apply(parent[0]);
}
}
else if (currentSub.isNull()) {
currentSub = current;
}
current = parent;
}
else {
currentSub = Node();
}
}
break;
// Bit-vector comparisons: replace with new Boolean variable, but have
// to also conjoin with a side condition as there is always one case
// when the comparison is forced to be false
case kind::BITVECTOR_ULT:
case kind::BITVECTOR_UGE:
case kind::BITVECTOR_UGT:
case kind::BITVECTOR_ULE:
case kind::BITVECTOR_SLT:
case kind::BITVECTOR_SGE:
case kind::BITVECTOR_SGT:
case kind::BITVECTOR_SLE: {
// Tuples over (signed, swap, strict).
switch (parent.getKind()) {
case kind::BITVECTOR_UGE:
break;
case kind::BITVECTOR_ULT:
strict = true;
break;
case kind::BITVECTOR_ULE:
swap = true;
break;
case kind::BITVECTOR_UGT:
swap = true;
strict = true;
break;
case kind::BITVECTOR_SGE:
isSigned = true;
break;
case kind::BITVECTOR_SLT:
isSigned = true;
strict = true;
break;
case kind::BITVECTOR_SLE:
isSigned = true;
swap = true;
break;
case kind::BITVECTOR_SGT:
isSigned = true;
swap = true;
strict = true;
break;
default:
Unreachable();
}
TNode other;
bool left = false;
if (parent[0] == current) {
other = parent[1];
left = true;
} else {
Assert(parent[1] == current);
other = parent[0];
}
if (d_unconstrained.find(other) != d_unconstrained.end()) {
if (d_unconstrained.find(parent) == d_unconstrained.end() &&
!d_substitutions.hasSubstitution(parent)) {
++d_numUnconstrainedElim;
if (currentSub.isNull()) {
currentSub = current;
}
currentSub = newUnconstrainedVar(parent.getType(), currentSub);
current = parent;
} else {
currentSub = Node();
}
} else {
unsigned size = current.getType().getBitVectorSize();
BitVector bv =
isSigned ? BitVector(size, Integer(1).multiplyByPow2(size - 1))
: BitVector(size, unsigned(0));
if (swap == left) {
bv = ~bv;
}
if (currentSub.isNull()) {
currentSub = current;
}
currentSub = newUnconstrainedVar(parent.getType(), currentSub);
current = parent;
NodeManager* nm = NodeManager::currentNM();
Node test =
Rewriter::rewrite(other.eqNode(nm->mkConst<BitVector>(bv)));
if (test == nm->mkConst<bool>(false)) {
break;
}
if (strict) {
currentSub = currentSub.andNode(test.notNode());
} else {
currentSub = currentSub.orNode(test);
}
// Delay adding this substitution - see comment at end of function
delayQueueLeft.push_back(current);
delayQueueRight.push_back(currentSub);
currentSub = Node();
parent = TNode();
}
break;
}
// Do nothing
case kind::BITVECTOR_SIGN_EXTEND:
case kind::BITVECTOR_ZERO_EXTEND:
case kind::BITVECTOR_REPEAT:
case kind::BITVECTOR_ROTATE_LEFT:
case kind::BITVECTOR_ROTATE_RIGHT:
default:
break;
}
if (current == parent && d_visited[parent] == 1) {
d_unconstrained.insert(parent);
continue;
}
}
if (!currentSub.isNull()) {
Assert(currentSub.isVar());
d_substitutions.addSubstitution(current, currentSub, false);
}
if (workList.empty()) {
break;
}
current = workList.back();
currentSub = Node();
workList.pop_back();
}
TNode left;
Node right;
// All substitutions except those arising from bitvector comparisons are
// substitutions t -> x where x is a variable. This allows us to build the
// substitution very quickly (never invalidating the substitution cache).
// Bitvector comparisons are more complicated and may require
// back-substitution and cache-invalidation. So we do these last.
while (!delayQueueLeft.empty()) {
left = delayQueueLeft.back();
if (!d_substitutions.hasSubstitution(left)) {
right = d_substitutions.apply(delayQueueRight.back());
d_substitutions.addSubstitution(delayQueueLeft.back(), right);
}
delayQueueLeft.pop_back();
delayQueueRight.pop_back();
}
}
