CVC3::ValidityChecker Class Reference
[Validity Checker API]

Generic API for a validity checker. More...

#include <vc.h>

Inheritance diagram for CVC3::ValidityChecker:

[legend]

List of all members.

Public Member Functions

• ValidityChecker ()

  Constructor.
  

• virtual ~ValidityChecker ()

  Destructor.
  

• virtual CLFlags & getFlags () const =0

  Return the set of command-line flags.
  

• virtual void reprocessFlags ()=0

  Force reprocessing of all flags.
  

Type-related methods

Methods for creating and looking up types

See also:

class Type

• virtual Type boolType ()=0

  Create type BOOLEAN.
  

• virtual Type realType ()=0

  Create type REAL.
  

• virtual Type intType ()=0

  Create type INT.
  

• virtual Type subrangeType (const Expr &l, const Expr &r)=0

  Create a subrange type [l..r].
  

• virtual Type subtypeType (const Expr &pred, const Expr &witness)=0

  Creates a subtype defined by the given predicate.
  

• virtual Type tupleType (const Type &type0, const Type &type1)=0

  2-element tuple
  

• virtual Type tupleType (const Type &type0, const Type &type1, const Type &type2)=0

  3-element tuple
  

• virtual Type tupleType (const std::vector< Type > &types)=0

  n-element tuple (from a vector of types)
  

• virtual Type recordType (const std::string &field, const Type &type)=0

  1-element record
  

• virtual Type recordType (const std::string &field0, const Type &type0, const std::string &field1, const Type &type1)=0

  2-element record
  

• virtual Type recordType (const std::string &field0, const Type &type0, const std::string &field1, const Type &type1, const std::string &field2, const Type &type2)=0

  3-element record
  

• virtual Type recordType (const std::vector< std::string > &fields, const std::vector< Type > &types)=0

  n-element record (fields and types must be of the same length)
  

• virtual Type dataType (const std::string &name, const std::string &constructor, const std::vector< std::string > &selectors, const std::vector< Expr > &types)=0

  Single datatype, single constructor.
  

• virtual Type dataType (const std::string &name, const std::vector< std::string > &constructors, const std::vector< std::vector< std::string > > &selectors, const std::vector< std::vector< Expr > > &types)=0

  Single datatype, multiple constructors.
  

• virtual void dataType (const std::vector< std::string > &names, const std::vector< std::vector< std::string > > &constructors, const std::vector< std::vector< std::vector< std::string > > > &selectors, const std::vector< std::vector< std::vector< Expr > > > &types, std::vector< Type > &returnTypes)=0

  Multiple datatypes.
  

• virtual Type arrayType (const Type &typeIndex, const Type &typeData)=0

  Create an array type (ARRAY typeIndex OF typeData).
  

• virtual Type bitvecType (int n)=0

  Create a bitvector type of length n.
  

• virtual Type funType (const Type &typeDom, const Type &typeRan)=0

  Create a function type typeDom -> typeRan.
  

• virtual Type funType (const std::vector< Type > &typeDom, const Type &typeRan)=0

  Create a function type (t1,t2,...,tn) -> typeRan.
  

• virtual Type createType (const std::string &typeName)=0

  Create named user-defined uninterpreted type.
  

• virtual Type createType (const std::string &typeName, const Type &def)=0

  Create named user-defined interpreted type (type abbreviation).
  

• virtual Type lookupType (const std::string &typeName)=0

  Lookup a user-defined (uninterpreted) type by name. Returns Null if none.
  

General Expr methods

See also:

class Expr

class ExprManager

• virtual ExprManager * getEM ()=0

  Return the ExprManager.
  

• virtual Expr varExpr (const std::string &name, const Type &type)=0

  Create a variable with a given name and type.
  

• virtual Expr varExpr (const std::string &name, const Type &type, const Expr &def)=0

  Create a variable with a given name, type, and value.
  

• virtual Expr lookupVar (const std::string &name, Type *type)=0

  Get the variable associated with a name, and its type.
  

• virtual Type getType (const Expr &e)=0

  Get the type of the Expr.
  

• virtual Type getBaseType (const Expr &e)=0

  Get the largest supertype of the Expr.
  

• virtual Type getBaseType (const Type &t)=0

  Get the largest supertype of the Type.
  

• virtual Expr getTypePred (const Type &t, const Expr &e)=0

  Get the subtype predicate.
  

• virtual Expr stringExpr (const std::string &str)=0

  Create a string Expr.
  

• virtual Expr idExpr (const std::string &name)=0

  Create an ID Expr.
  

• virtual Expr listExpr (const std::vector< Expr > &kids)=0

  Create a list Expr.
  

• virtual Expr listExpr (const Expr &e1)=0

  Overloaded version of listExpr with one argument.
  

• virtual Expr listExpr (const Expr &e1, const Expr &e2)=0

  Overloaded version of listExpr with two arguments.
  

• virtual Expr listExpr (const Expr &e1, const Expr &e2, const Expr &e3)=0

  Overloaded version of listExpr with three arguments.
  

• virtual Expr listExpr (const std::string &op, const std::vector< Expr > &kids)=0

  Overloaded version of listExpr with string operator and many arguments.
  

• virtual Expr listExpr (const std::string &op, const Expr &e1)=0

  Overloaded version of listExpr with string operator and one argument.
  

• virtual Expr listExpr (const std::string &op, const Expr &e1, const Expr &e2)=0

  Overloaded version of listExpr with string operator and two arguments.
  

• virtual Expr listExpr (const std::string &op, const Expr &e1, const Expr &e2, const Expr &e3)=0

  Overloaded version of listExpr with string operator and three arguments.
  

• virtual void printExpr (const Expr &e)=0

  Prints e to the standard output.
  

• virtual void printExpr (const Expr &e, std::ostream &os)=0

  Prints e to the given ostream.
  

• virtual Expr parseExpr (const Expr &e)=0

  Parse an expression using a Theory-specific parser.
  

• virtual Type parseType (const Expr &e)=0

  Parse a type expression using a Theory-specific parser.
  

• virtual Expr importExpr (const Expr &e)=0

  Import the Expr from another instance of ValidityChecker.
  

• virtual Type importType (const Type &t)=0

  Import the Type from another instance of ValidityChecker.
  

• virtual void cmdsFromString (const std::string &s, InputLanguage lang=PRESENTATION_LANG)=0

  Parse a sequence of commands from a presentation language string.
  

• virtual Expr exprFromString (const std::string &e)=0

  Parse an expression from a presentation language string.
  

Core expression methods

Methods for manipulating core expressions

Except for equality and ite, the children provided as arguments must be of type Boolean.

• virtual Expr trueExpr ()=0

  Return TRUE Expr.
  

• virtual Expr falseExpr ()=0

  Return FALSE Expr.
  

• virtual Expr notExpr (const Expr &child)=0

  Create negation.
  

• virtual Expr andExpr (const Expr &left, const Expr &right)=0

  Create 2-element conjunction.
  

• virtual Expr andExpr (const std::vector< Expr > &children)=0

  Create n-element conjunction.
  

• virtual Expr orExpr (const Expr &left, const Expr &right)=0

  Create 2-element disjunction.
  

• virtual Expr orExpr (const std::vector< Expr > &children)=0

  Create n-element disjunction.
  

• virtual Expr impliesExpr (const Expr &hyp, const Expr &conc)=0

  Create Boolean implication.
  

• virtual Expr iffExpr (const Expr &left, const Expr &right)=0

  Create left IFF right (boolean equivalence).
  

• virtual Expr eqExpr (const Expr &child0, const Expr &child1)=0

  Create an equality expression.
  

• virtual Expr iteExpr (const Expr &ifpart, const Expr &thenpart, const Expr &elsepart)=0

  Create IF ifpart THEN thenpart ELSE elsepart ENDIF.
  

• virtual Expr distinctExpr (const std::vector< Expr > &children)=0

User-defined (uninterpreted) function methods

Methods for manipulating uninterpreted function expressions

• virtual Op createOp (const std::string &name, const Type &type)=0

  Create a named uninterpreted function with a given type.
  

• virtual Op createOp (const std::string &name, const Type &type, const Expr &def)=0

  Create a named user-defined function with a given type.
  

• virtual Op lookupOp (const std::string &name, Type *type)=0

  Get the Op associated with a name, and its type.
  

• virtual Expr funExpr (const Op &op, const Expr &child)=0

  Unary function application (op must be of function type).
  

• virtual Expr funExpr (const Op &op, const Expr &left, const Expr &right)=0

  Binary function application (op must be of function type).
  

• virtual Expr funExpr (const Op &op, const Expr &child0, const Expr &child1, const Expr &child2)=0

  Ternary function application (op must be of function type).
  

• virtual Expr funExpr (const Op &op, const std::vector< Expr > &children)=0

  n-ary function application (op must be of function type)
  

Arithmetic expression methods

Methods for manipulating arithmetic expressions

These functions create arithmetic expressions. The children provided as arguments must be of type Real.

• virtual bool addPairToArithOrder (const Expr &smaller, const Expr &bigger)=0
• virtual Expr ratExpr (int n, int d=1)=0

  Create a rational number with numerator n and denominator d.
  

• virtual Expr ratExpr (const std::string &n, const std::string &d, int base)=0

  Create a rational number with numerator n and denominator d.
  

• virtual Expr ratExpr (const std::string &n, int base=10)=0

  Create a rational from a single string.
  

• virtual Expr uminusExpr (const Expr &child)=0

  Unary minus.
  

• virtual Expr plusExpr (const Expr &left, const Expr &right)=0

  Create 2-element sum (left + right).
  

• virtual Expr plusExpr (const std::vector< Expr > &children)=0

  Create n-element sum.
  

• virtual Expr minusExpr (const Expr &left, const Expr &right)=0

  Make a difference (left - right).
  

• virtual Expr multExpr (const Expr &left, const Expr &right)=0

  Create a product (left * right).
  

• virtual Expr powExpr (const Expr &x, const Expr &n)=0

  Create a power expression (x ^ n); n must be integer.
  

• virtual Expr divideExpr (const Expr &numerator, const Expr &denominator)=0

  Create expression x / y.
  

• virtual Expr ltExpr (const Expr &left, const Expr &right)=0

  Create (left < right).
  

• virtual Expr leExpr (const Expr &left, const Expr &right)=0

  Create (left <= right).
  

• virtual Expr gtExpr (const Expr &left, const Expr &right)=0

  Create (left > right).
  

• virtual Expr geExpr (const Expr &left, const Expr &right)=0

  Create (left >= right).
  

Record expression methods

Methods for manipulating record expressions

• virtual Expr recordExpr (const std::string &field, const Expr &expr)=0

  Create a 1-element record value (# field := expr #).
  

• virtual Expr recordExpr (const std::string &field0, const Expr &expr0, const std::string &field1, const Expr &expr1)=0

  Create a 2-element record value (# field0 := expr0, field1 := expr1 #).
  

• virtual Expr recordExpr (const std::string &field0, const Expr &expr0, const std::string &field1, const Expr &expr1, const std::string &field2, const Expr &expr2)=0

  Create a 3-element record value (# field_i := expr_i #).
  

• virtual Expr recordExpr (const std::vector< std::string > &fields, const std::vector< Expr > &exprs)=0

  Create an n-element record value (# field_i := expr_i #).
  

• virtual Expr recSelectExpr (const Expr &record, const std::string &field)=0

  Create record.field (field selection).
  

• virtual Expr recUpdateExpr (const Expr &record, const std::string &field, const Expr &newValue)=0

  Record update; equivalent to "record WITH .field := newValue".
  

Array expression methods

Methods for manipulating array expressions

• virtual Expr readExpr (const Expr &array, const Expr &index)=0

  Create an expression array[index] (array access).
  

• virtual Expr writeExpr (const Expr &array, const Expr &index, const Expr &newValue)=0

  Array update; equivalent to "array WITH index := newValue".
  

Bitvector expression methods

Methods for manipulating bitvector expressions

• virtual Expr newBVConstExpr (const std::string &s, int base=2)=0

  'numbits' is the number of bits in the result
  

• virtual Expr newBVConstExpr (const std::vector< bool > &bits)=0

  'numbits' is the number of bits in the result
  

• virtual Expr newBVConstExpr (const Rational &r, int len=0)=0

  'numbits' is the number of bits in the result
  

• virtual Expr newConcatExpr (const Expr &t1, const Expr &t2)=0

  'numbits' is the number of bits in the result
  

• virtual Expr newConcatExpr (const std::vector< Expr > &kids)=0

  'numbits' is the number of bits in the result
  

• virtual Expr newBVExtractExpr (const Expr &e, int hi, int low)=0

  'numbits' is the number of bits in the result
  

• virtual Expr newBVNegExpr (const Expr &t1)=0

  'numbits' is the number of bits in the result
  

• virtual Expr newBVAndExpr (const Expr &t1, const Expr &t2)=0

  'numbits' is the number of bits in the result
  

• virtual Expr newBVAndExpr (const std::vector< Expr > &kids)=0

  'numbits' is the number of bits in the result
  

• virtual Expr newBVOrExpr (const Expr &t1, const Expr &t2)=0

  'numbits' is the number of bits in the result
  

• virtual Expr newBVOrExpr (const std::vector< Expr > &kids)=0

  'numbits' is the number of bits in the result
  

• virtual Expr newBVXorExpr (const Expr &t1, const Expr &t2)=0

  'numbits' is the number of bits in the result
  

• virtual Expr newBVXorExpr (const std::vector< Expr > &kids)=0

  'numbits' is the number of bits in the result
  

• virtual Expr newBVXnorExpr (const Expr &t1, const Expr &t2)=0

  'numbits' is the number of bits in the result
  

• virtual Expr newBVXnorExpr (const std::vector< Expr > &kids)=0

  'numbits' is the number of bits in the result
  

• virtual Expr newBVNandExpr (const Expr &t1, const Expr &t2)=0

  'numbits' is the number of bits in the result
  

• virtual Expr newBVNorExpr (const Expr &t1, const Expr &t2)=0

  'numbits' is the number of bits in the result
  

• virtual Expr newBVCompExpr (const Expr &t1, const Expr &t2)=0

  'numbits' is the number of bits in the result
  

• virtual Expr newBVLTExpr (const Expr &t1, const Expr &t2)=0

  'numbits' is the number of bits in the result
  

• virtual Expr newBVLEExpr (const Expr &t1, const Expr &t2)=0

  'numbits' is the number of bits in the result
  

• virtual Expr newBVSLTExpr (const Expr &t1, const Expr &t2)=0

  'numbits' is the number of bits in the result
  

• virtual Expr newBVSLEExpr (const Expr &t1, const Expr &t2)=0

  'numbits' is the number of bits in the result
  

• virtual Expr newSXExpr (const Expr &t1, int len)=0

  'numbits' is the number of bits in the result
  

• virtual Expr newBVUminusExpr (const Expr &t1)=0

  'numbits' is the number of bits in the result
  

• virtual Expr newBVSubExpr (const Expr &t1, const Expr &t2)=0

  'numbits' is the number of bits in the result
  

• virtual Expr newBVPlusExpr (int numbits, const std::vector< Expr > &k)=0

  'numbits' is the number of bits in the result
  

• virtual Expr newBVPlusExpr (int numbits, const Expr &t1, const Expr &t2)=0

  'numbits' is the number of bits in the result
  

• virtual Expr newBVMultExpr (int numbits, const Expr &t1, const Expr &t2)=0

  'numbits' is the number of bits in the result
  

• virtual Expr newBVUDivExpr (const Expr &t1, const Expr &t2)=0

  'numbits' is the number of bits in the result
  

• virtual Expr newBVURemExpr (const Expr &t1, const Expr &t2)=0

  'numbits' is the number of bits in the result
  

• virtual Expr newBVSDivExpr (const Expr &t1, const Expr &t2)=0

  'numbits' is the number of bits in the result
  

• virtual Expr newBVSRemExpr (const Expr &t1, const Expr &t2)=0

  'numbits' is the number of bits in the result
  

• virtual Expr newBVSModExpr (const Expr &t1, const Expr &t2)=0

  'numbits' is the number of bits in the result
  

• virtual Expr newFixedLeftShiftExpr (const Expr &t1, int r)=0

  'numbits' is the number of bits in the result
  

• virtual Expr newFixedConstWidthLeftShiftExpr (const Expr &t1, int r)=0

  'numbits' is the number of bits in the result
  

• virtual Expr newFixedRightShiftExpr (const Expr &t1, int r)=0

  'numbits' is the number of bits in the result
  

• virtual Rational computeBVConst (const Expr &e)=0

  'numbits' is the number of bits in the result
  

Other expression methods

Methods for manipulating other kinds of expressions

• virtual Expr tupleExpr (const std::vector< Expr > &exprs)=0

  Tuple expression.
  

• virtual Expr tupleSelectExpr (const Expr &tuple, int index)=0

  Tuple select; equivalent to "tuple.n", where n is an numeral (e.g. tup.5).
  

• virtual Expr tupleUpdateExpr (const Expr &tuple, int index, const Expr &newValue)=0

  Tuple update; equivalent to "tuple WITH index := newValue".
  

• virtual Expr datatypeConsExpr (const std::string &constructor, const std::vector< Expr > &args)=0

  Datatype constructor expression.
  

• virtual Expr datatypeSelExpr (const std::string &selector, const Expr &arg)=0

  Datatype selector expression.
  

• virtual Expr datatypeTestExpr (const std::string &constructor, const Expr &arg)=0

  Datatype tester expression.
  

• virtual Expr boundVarExpr (const std::string &name, const std::string &uid, const Type &type)=0

  Create a bound variable with a given name, unique ID (uid) and type.
  

• virtual Expr forallExpr (const std::vector< Expr > &vars, const Expr &body)=0

  Universal quantifier.
  

• virtual Expr forallExpr (const std::vector< Expr > &vars, const Expr &body, const std::vector< std::vector< Expr > > &triggers)=0

  Universal quantifier with triggers.
  

• virtual void setTriggers (const Expr &e, const std::vector< std::vector< Expr > > &triggers)=0

  Set triggers for quantifier instantiation.
  

• virtual Expr existsExpr (const std::vector< Expr > &vars, const Expr &body)=0

  Existential quantifier.
  

• virtual Op lambdaExpr (const std::vector< Expr > &vars, const Expr &body)=0

  Lambda-expression.
  

• virtual Op transClosure (const Op &op)=0

  Transitive closure of a binary predicate.
  

• virtual Expr simulateExpr (const Expr &f, const Expr &s0, const std::vector< Expr > &inputs, const Expr &n)=0

  Symbolic simulation expression.
  

Validity checking methods

Methods related to validity checking

This group includes methods for asserting formulas, checking validity in the given logical context, manipulating the scope level of the context, etc.

• virtual void setResourceLimit (unsigned limit)=0

  Set the resource limit (0==unlimited, 1==exhausted).
  

• virtual void setTimeLimit (unsigned limit)=0

  Set a time limit in tenth of a second,.
  

• virtual void assertFormula (const Expr &e)=0

  Assert a new formula in the current context.
  

• virtual void registerAtom (const Expr &e)=0

  Register an atomic formula of interest.
  

• virtual Expr getImpliedLiteral ()=0

  Return next literal implied by last assertion. Null Expr if none.
  

• virtual Expr simplify (const Expr &e)=0

  Simplify e with respect to the current context.
  

• virtual QueryResult query (const Expr &e)=0

  Check validity of e in the current context.
  

• virtual QueryResult checkUnsat (const Expr &e)=0

  Check satisfiability of the expr in the current context.
  

• virtual QueryResult checkContinue ()=0

  Get the next model.
  

• virtual QueryResult restart (const Expr &e)=0

  Restart the most recent query with e as an additional assertion.
  

• virtual void returnFromCheck ()=0

  Returns to context immediately before last invalid query.
  

• virtual void getUserAssumptions (std::vector< Expr > &assumptions)=0

  Get assumptions made by the user in this and all previous contexts.
  

• virtual void getInternalAssumptions (std::vector< Expr > &assumptions)=0

  Get assumptions made internally in this and all previous contexts.
  

• virtual void getAssumptions (std::vector< Expr > &assumptions)=0

  Get all assumptions made in this and all previous contexts.
  

• virtual void getAssumptionsUsed (std::vector< Expr > &assumptions)=0

  Returns the set of assumptions used in the proof of queried formula.
  

• virtual Expr getProofQuery ()=0

  Set the resource limit (0==unlimited, 1==exhausted).
  

• virtual void getCounterExample (std::vector< Expr > &assumptions, bool inOrder=true)=0

  Return the internal assumptions that make the queried formula false.
  

• virtual void getConcreteModel (ExprMap< Expr > &m)=0

  Will assign concrete values to all user created variables.
  

• virtual QueryResult tryModelGeneration ()=0
• virtual FormulaValue value (const Expr &e)=0

  Set the resource limit (0==unlimited, 1==exhausted).
  

• virtual bool inconsistent (std::vector< Expr > &assumptions)=0

  Returns true if the current context is inconsistent.
  

• virtual bool inconsistent ()=0

  Returns true if the current context is inconsistent.
  

• virtual bool incomplete ()=0

  Returns true if the invalid result from last query() is imprecise.
  

• virtual bool incomplete (std::vector< std::string > &reasons)=0

  Returns true if the invalid result from last query() is imprecise.
  

• virtual Proof getProof ()=0

  Returns the proof term for the last proven query.
  

• virtual Expr getTCC ()=0

  Returns the TCC of the last assumption or query.
  

• virtual void getAssumptionsTCC (std::vector< Expr > &assumptions)=0

  Return the set of assumptions used in the proof of the last TCC.
  

• virtual Proof getProofTCC ()=0

  Returns the proof of TCC of the last assumption or query.
  

• virtual Expr getClosure ()=0

  After successful query, return its closure |- Gamma => phi.
  

• virtual Proof getProofClosure ()=0

  Construct a proof of the query closure |- Gamma => phi.
  

Context methods

Methods for manipulating contexts

Contexts support stack-based push and pop. There are two separate notions of the current context stack. stackLevel(), push(), pop(), and popto() work with the user-level notion of the stack.

scopeLevel(), pushScope(), popScope(), and poptoScope() work with the internal stack which is more fine-grained than the user stack.

Do not use the scope methods unless you know what you are doing. *

• virtual int stackLevel ()=0

  Returns the current stack level. Initial level is 0.
  

• virtual void push ()=0

  Checkpoint the current context and increase the scope level.
  

• virtual void pop ()=0

  Restore the current context to its state at the last checkpoint.
  

• virtual void popto (int stackLevel)=0

  Restore the current context to the given stackLevel.
  

• virtual int scopeLevel ()=0

  Returns the current scope level. Initially, the scope level is 1.
  

• virtual void pushScope ()=0

  Checkpoint the current context and increase the internal scope level. Do not use unless you know what you're doing!
  

• virtual void popScope ()=0

  Restore the current context to its state at the last internal checkpoint. Do not use unless you know what you're doing!
  

• virtual void poptoScope (int scopeLevel)=0

  Restore the current context to the given scopeLevel.
  

• virtual Context * getCurrentContext ()=0

  Get the current context.
  

• virtual void reset ()=0

  Destroy and recreate validity checker: resets everything except for flags.
  

Reading files

Methods for reading external files

• virtual void loadFile (const std::string &fileName, InputLanguage lang=PRESENTATION_LANG, bool interactive=false, bool calledFromParser=false)=0

  Read and execute the commands from a file given by name ("" means stdin).
  

• virtual void loadFile (std::istream &is, InputLanguage lang=PRESENTATION_LANG, bool interactive=false)=0

  Read and execute the commands from a stream.
  

Reporting Statistics

Methods for collecting and reporting run-time statistics

• virtual Statistics & getStatistics ()=0

  Get statistics object.
  

• virtual void printStatistics ()=0

  Print collected statistics to stdout.
  

Static Public Member Functions

• static CLFlags createFlags ()

  Create the set of command line flags with default values;.
  

• static ValidityChecker * create (const CLFlags &flags)

  Create an instance of ValidityChecker.
  

• static ValidityChecker * create ()

  Create an instance of ValidityChecker using default flag values.
  

---

Detailed Description

Generic API for a validity checker.

Author: Clark Barrett

Created: Tue Nov 26 18:24:25 2002

All terms and formulas are represented as expressions using the Expr class. The notion of a context is also important. A context is a "background" set of formulas which are assumed to be true or false. Formulas can be added to the context explicitly, using assertFormula, or they may be added as part of processing a query command. At any time, the current set of formulas making up the context can be retrieved using getAssumptions.

Definition at line 94 of file vc.h.

---

Constructor & Destructor Documentation

CVC3::ValidityChecker::ValidityChecker

(

)

[inline]

Constructor.

Definition at line 98 of file vc.h.

virtual CVC3::ValidityChecker::~ValidityChecker

(

)

[inline, virtual]

Destructor.

Definition at line 100 of file vc.h.

---

Member Function Documentation

virtual CLFlags& CVC3::ValidityChecker::getFlags

(

)

const [pure virtual]

Return the set of command-line flags.

The flags are returned by reference, and if modified, will have an immediate effect on the subsequent commands. Note that not all flags will have such an effect; some flags are used only at initialization time (like "sat"), and therefore, will not take effect if modified after ValidityChecker is created.

Implemented in CVC3::VCL.

Referenced by CVC3::VCCmd::evaluateCommand(), main(), CVC3::VCCmd::reportResult(), and sighandler().

virtual void CVC3::ValidityChecker::reprocessFlags

(

)

[pure virtual]

Force reprocessing of all flags.

Implemented in CVC3::VCL.

Referenced by CVC3::VCCmd::evaluateCommand().

CLFlags ValidityChecker::createFlags

(

)

[static]

Create the set of command line flags with default values;.

Returns:

the set of flags by value

Definition at line 69 of file vcl.cpp.

References CVC3::CLFlags::addFlag(), and IF_DEBUG.

Referenced by create().

ValidityChecker * ValidityChecker::create

(

const CLFlags &

flags

)

[static]

Create an instance of ValidityChecker.

Parameters:

flags

is the set of command line flags.

Definition at line 63 of file vcl.cpp.

ValidityChecker * ValidityChecker::create

(

)

[static]

Create an instance of ValidityChecker using default flag values.

Definition at line 284 of file vcl.cpp.

References createFlags().

virtual Type CVC3::ValidityChecker::boolType

(

)

[pure virtual]

Create type BOOLEAN.

Implemented in CVC3::VCL.

virtual Type CVC3::ValidityChecker::realType

(

)

[pure virtual]

Create type REAL.

Implemented in CVC3::VCL.

virtual Type CVC3::ValidityChecker::intType

(

)

[pure virtual]

Create type INT.

Implemented in CVC3::VCL.

virtual Type CVC3::ValidityChecker::subrangeType	(	const Expr &	l,
		const Expr &	r
	)			[pure virtual]

Create a subrange type [l..r].

l and r can be Null; l=Null represents minus infinity, r=Null is plus infinity.

Implemented in CVC3::VCL.

virtual Type CVC3::ValidityChecker::subtypeType	(	const Expr &	pred,
		const Expr &	witness
	)			[pure virtual]

Creates a subtype defined by the given predicate.

Parameters:

	pred	is a predicate taking one argument of type T and returning Boolean. The resulting type is a subtype of T whose elements x are those satisfying the predicate pred(x).
	witness	is an expression of type T for which pred holds (if a Null expression is passed as a witness, cvc will try to prove . if the witness check fails, a TypecheckException is thrown.

Implemented in CVC3::VCL.

virtual Type CVC3::ValidityChecker::tupleType	(	const Type &	type0,
		const Type &	type1
	)			[pure virtual]

2-element tuple

Implemented in CVC3::VCL.

virtual Type CVC3::ValidityChecker::tupleType	(	const Type &	type0,
		const Type &	type1,
		const Type &	type2
	)			[pure virtual]

3-element tuple

Implemented in CVC3::VCL.

virtual Type CVC3::ValidityChecker::tupleType

(

const std::vector< Type > &

types

)

[pure virtual]

n-element tuple (from a vector of types)

Implemented in CVC3::VCL.

virtual Type CVC3::ValidityChecker::recordType	(	const std::string &	field,
		const Type &	type
	)			[pure virtual]

1-element record

Implemented in CVC3::VCL.

virtual Type CVC3::ValidityChecker::recordType	(	const std::string &	field0,
		const Type &	type0,
		const std::string &	field1,
		const Type &	type1
	)			[pure virtual]

2-element record

Fields will be sorted automatically

Implemented in CVC3::VCL.

virtual Type CVC3::ValidityChecker::recordType	(	const std::string &	field0,
		const Type &	type0,
		const std::string &	field1,
		const Type &	type1,
		const std::string &	field2,
		const Type &	type2
	)			[pure virtual]

3-element record

Fields will be sorted automatically

Implemented in CVC3::VCL.

virtual Type CVC3::ValidityChecker::recordType	(	const std::vector< std::string > &	fields,
		const std::vector< Type > &	types
	)			[pure virtual]

n-element record (fields and types must be of the same length)

Fields will be sorted automatically

Implemented in CVC3::VCL.

virtual Type CVC3::ValidityChecker::dataType	(	const std::string &	name,
		const std::string &	constructor,
		const std::vector< std::string > &	selectors,
		const std::vector< Expr > &	types
	)			[pure virtual]

Single datatype, single constructor.

The types are either type exressions (obtained from a type with getExpr()) or string expressions containing the name of (one of) the dataType(s) being defined.

Implemented in CVC3::VCL.

Referenced by CVC3::VCCmd::evaluateCommand().

virtual Type CVC3::ValidityChecker::dataType	(	const std::string &	name,
		const std::vector< std::string > &	constructors,
		const std::vector< std::vector< std::string > > &	selectors,
		const std::vector< std::vector< Expr > > &	types
	)			[pure virtual]

Single datatype, multiple constructors.

The types are either type exressions (obtained from a type with getExpr()) or string expressions containing the name of (one of) the dataType(s) being defined.

Implemented in CVC3::VCL.

virtual void CVC3::ValidityChecker::dataType	(	const std::vector< std::string > &	names,
		const std::vector< std::vector< std::string > > &	constructors,
		const std::vector< std::vector< std::vector< std::string > > > &	selectors,
		const std::vector< std::vector< std::vector< Expr > > > &	types,
		std::vector< Type > &	returnTypes
	)			[pure virtual]

Multiple datatypes.

The types are either type exressions (obtained from a type with getExpr()) or string expressions containing the name of (one of) the dataType(s) being defined.

Implemented in CVC3::VCL.

virtual Type CVC3::ValidityChecker::arrayType	(	const Type &	typeIndex,
		const Type &	typeData
	)			[pure virtual]

Create an array type (ARRAY typeIndex OF typeData).

Implemented in CVC3::VCL.

virtual Type CVC3::ValidityChecker::bitvecType

(

int

n

)

[pure virtual]

Create a bitvector type of length n.

Implemented in CVC3::VCL.

virtual Type CVC3::ValidityChecker::funType	(	const Type &	typeDom,
		const Type &	typeRan
	)			[pure virtual]

Create a function type typeDom -> typeRan.

Implemented in CVC3::VCL.

virtual Type CVC3::ValidityChecker::funType	(	const std::vector< Type > &	typeDom,
		const Type &	typeRan
	)			[pure virtual]

Create a function type (t1,t2,...,tn) -> typeRan.

Implemented in CVC3::VCL.

virtual Type CVC3::ValidityChecker::createType

(

const std::string &

typeName

)

[pure virtual]

Create named user-defined uninterpreted type.

Implemented in CVC3::VCL.

Referenced by CVC3::VCCmd::evaluateCommand().

virtual Type CVC3::ValidityChecker::createType	(	const std::string &	typeName,
		const Type &	def
	)			[pure virtual]

Create named user-defined interpreted type (type abbreviation).

Implemented in CVC3::VCL.

virtual Type CVC3::ValidityChecker::lookupType

(

const std::string &

typeName

)

[pure virtual]

Lookup a user-defined (uninterpreted) type by name. Returns Null if none.

Implemented in CVC3::VCL.

virtual ExprManager* CVC3::ValidityChecker::getEM

(

)

[pure virtual]

Return the ExprManager.

Implemented in CVC3::VCL.

Referenced by CVC3::VCCmd::evaluateCommand(), main(), CVC3::VCCmd::printSymbols(), and CVC3::VCCmd::reportResult().

virtual Expr CVC3::ValidityChecker::varExpr	(	const std::string &	name,
		const Type &	type
	)			[pure virtual]

Create a variable with a given name and type.

Parameters:

	name	is the name of the variable
	type	is its type. The type cannot be a function type.

Returns:

an Expr representation of a new variable

Implemented in CVC3::VCL.

Referenced by CVC3::VCCmd::evaluateCommand().

virtual Expr CVC3::ValidityChecker::varExpr	(	const std::string &	name,
		const Type &	type,
		const Expr &	def
	)			[pure virtual]

Create a variable with a given name, type, and value.

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::lookupVar	(	const std::string &	name,
		Type *	type
	)			[pure virtual]

Get the variable associated with a name, and its type.

Parameters:

	name	is the variable name
	type	is where the type value is returned

Returns:

a variable by the name. If there is no such Expr, a NULL \ Expr is returned.

Implemented in CVC3::VCL.

virtual Type CVC3::ValidityChecker::getType

(

const Expr &

e

)

[pure virtual]

Get the type of the Expr.

Implemented in CVC3::VCL.

virtual Type CVC3::ValidityChecker::getBaseType

(

const Expr &

e

)

[pure virtual]

Get the largest supertype of the Expr.

Implemented in CVC3::VCL.

virtual Type CVC3::ValidityChecker::getBaseType

(

const Type &

t

)

[pure virtual]

Get the largest supertype of the Type.

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::getTypePred	(	const Type &	t,
		const Expr &	e
	)			[pure virtual]

Get the subtype predicate.

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::stringExpr

(

const std::string &

str

)

[pure virtual]

Create a string Expr.

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::idExpr

(

const std::string &

name

)

[pure virtual]

Create an ID Expr.

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::listExpr

(

const std::vector< Expr > &

kids

)

[pure virtual]

Create a list Expr.

Intermediate representation for DP-specific expressions. Normally, the first element of the list is a string Expr representing an operator, and the rest of the list are the arguments. For example,

kids.push_back(vc->stringExpr("PLUS")); kids.push_back(x); // x and y are previously created Exprs kids.push_back(y); Expr lst = vc->listExpr(kids);

Or, alternatively (using its overloaded version):

Expr lst = vc->listExpr("PLUS", x, y);

or

vector<Expr> summands; summands.push_back(x); summands.push_back(y); ... Expr lst = vc->listExpr("PLUS", summands);

Implemented in CVC3::VCL.

Referenced by CVC3::VCCmd::evaluateCommand().

virtual Expr CVC3::ValidityChecker::listExpr

(

const Expr &

e1

)

[pure virtual]

Overloaded version of listExpr with one argument.

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::listExpr	(	const Expr &	e1,
		const Expr &	e2
	)			[pure virtual]

Overloaded version of listExpr with two arguments.

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::listExpr	(	const Expr &	e1,
		const Expr &	e2,
		const Expr &	e3
	)			[pure virtual]

Overloaded version of listExpr with three arguments.

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::listExpr	(	const std::string &	op,
		const std::vector< Expr > &	kids
	)			[pure virtual]

Overloaded version of listExpr with string operator and many arguments.

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::listExpr	(	const std::string &	op,
		const Expr &	e1
	)			[pure virtual]

Overloaded version of listExpr with string operator and one argument.

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::listExpr	(	const std::string &	op,
		const Expr &	e1,
		const Expr &	e2
	)			[pure virtual]

Overloaded version of listExpr with string operator and two arguments.

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::listExpr	(	const std::string &	op,
		const Expr &	e1,
		const Expr &	e2,
		const Expr &	e3
	)			[pure virtual]

Overloaded version of listExpr with string operator and three arguments.

Implemented in CVC3::VCL.

virtual void CVC3::ValidityChecker::printExpr

(

const Expr &

e

)

[pure virtual]

Prints e to the standard output.

Implemented in CVC3::VCL.

Referenced by CVC3::VCCmd::evaluateCommand().

virtual void CVC3::ValidityChecker::printExpr	(	const Expr &	e,
		std::ostream &	os
	)			[pure virtual]

Prints e to the given ostream.

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::parseExpr

(

const Expr &

e

)

[pure virtual]

Parse an expression using a Theory-specific parser.

Implemented in CVC3::VCL.

Referenced by CVC3::VCCmd::evaluateCommand().

virtual Type CVC3::ValidityChecker::parseType

(

const Expr &

e

)

[pure virtual]

Parse a type expression using a Theory-specific parser.

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::importExpr

(

const Expr &

e

)

[pure virtual]

Import the Expr from another instance of ValidityChecker.

When expressions need to be passed among several instances of ValidityChecker, they need to be explicitly imported into the corresponding instance using this method. The return result is an identical expression that belongs to the current instance of ValidityChecker, and can be safely used as part of more complex expressions from the same instance.

Implemented in CVC3::VCL.

virtual Type CVC3::ValidityChecker::importType

(

const Type &

t

)

[pure virtual]

Import the Type from another instance of ValidityChecker.

See also:

getType()

Implemented in CVC3::VCL.

virtual void CVC3::ValidityChecker::cmdsFromString	(	const std::string &	s,
		InputLanguage	lang = PRESENTATION_LANG
	)			[pure virtual]

Parse a sequence of commands from a presentation language string.

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::exprFromString

(

const std::string &

e

)

[pure virtual]

Parse an expression from a presentation language string.

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::trueExpr

(

)

[pure virtual]

Return TRUE Expr.

Implemented in CVC3::VCL.

Referenced by CVC3::VCCmd::evaluateCommand().

virtual Expr CVC3::ValidityChecker::falseExpr

(

)

[pure virtual]

Return FALSE Expr.

Implemented in CVC3::VCL.

Referenced by SAT::CNF_Manager::cons().

virtual Expr CVC3::ValidityChecker::notExpr

(

const Expr &

child

)

[pure virtual]

Create negation.

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::andExpr	(	const Expr &	left,
		const Expr &	right
	)			[pure virtual]

Create 2-element conjunction.

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::andExpr

(

const std::vector< Expr > &

children

)

[pure virtual]

Create n-element conjunction.

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::orExpr	(	const Expr &	left,
		const Expr &	right
	)			[pure virtual]

Create 2-element disjunction.

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::orExpr

(

const std::vector< Expr > &

children

)

[pure virtual]

Create n-element disjunction.

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::impliesExpr	(	const Expr &	hyp,
		const Expr &	conc
	)			[pure virtual]

Create Boolean implication.

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::iffExpr	(	const Expr &	left,
		const Expr &	right
	)			[pure virtual]

Create left IFF right (boolean equivalence).

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::eqExpr	(	const Expr &	child0,
		const Expr &	child1
	)			[pure virtual]

Create an equality expression.

The two children must have the same type, and cannot be of type Boolean.

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::iteExpr	(	const Expr &	ifpart,
		const Expr &	thenpart,
		const Expr &	elsepart
	)			[pure virtual]

Create IF ifpart THEN thenpart ELSE elsepart ENDIF.

Parameters:

	ifpart	must be of type Boolean.
	thenpart	and
	elsepart	must have the same type, which will also be the type of the ite expression.

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::distinctExpr

(

const std::vector< Expr > &

children

)

[pure virtual]

Create an expression asserting that all the children are different.

Parameters:

children

the children to be asserted different

Implemented in CVC3::VCL.

virtual Op CVC3::ValidityChecker::createOp	(	const std::string &	name,
		const Type &	type
	)			[pure virtual]

Create a named uninterpreted function with a given type.

Parameters:

	name	is the new function's name (as ID Expr)
	type	is a function type ( [range -> domain] )

Implemented in CVC3::VCL.

Referenced by CVC3::VCCmd::evaluateCommand().

virtual Op CVC3::ValidityChecker::createOp	(	const std::string &	name,
		const Type &	type,
		const Expr &	def
	)			[pure virtual]

Create a named user-defined function with a given type.

Implemented in CVC3::VCL.

virtual Op CVC3::ValidityChecker::lookupOp	(	const std::string &	name,
		Type *	type
	)			[pure virtual]

Get the Op associated with a name, and its type.

Parameters:

	name	is the operator name
	type	is where the type value is returned

Returns:

an Op by the name. If there is no such Op, a NULL \ Op is returned.

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::funExpr	(	const Op &	op,
		const Expr &	child
	)			[pure virtual]

Unary function application (op must be of function type).

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::funExpr	(	const Op &	op,
		const Expr &	left,
		const Expr &	right
	)			[pure virtual]

Binary function application (op must be of function type).

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::funExpr	(	const Op &	op,
		const Expr &	child0,
		const Expr &	child1,
		const Expr &	child2
	)			[pure virtual]

Ternary function application (op must be of function type).

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::funExpr	(	const Op &	op,
		const std::vector< Expr > &	children
	)			[pure virtual]

n-ary function application (op must be of function type)

Implemented in CVC3::VCL.

virtual bool CVC3::ValidityChecker::addPairToArithOrder	(	const Expr &	smaller,
		const Expr &	bigger
	)			[pure virtual]

Add the pair of variables to the variable ordering for aritmetic solving. Terms that are not arithmetic will be ignored.

Parameters:

	smaller	the smaller variable
	bigger	the bigger variable

Implemented in CVC3::VCL.

Referenced by CVC3::VCCmd::evaluateCommand().

virtual Expr CVC3::ValidityChecker::ratExpr	(	int	n,
		int	d = 1
	)			[pure virtual]

Create a rational number with numerator n and denominator d.

Parameters:

	n	the numerator
	d	the denominator, cannot be 0.

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::ratExpr	(	const std::string &	n,
		const std::string &	d,
		int	base
	)			[pure virtual]

Create a rational number with numerator n and denominator d.

Here n and d are given as strings. They are converted to arbitrary-precision integers according to the given base.

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::ratExpr	(	const std::string &	n,
		int	base = 10
	)			[pure virtual]

Create a rational from a single string.

Parameters:

	n	can be a string containing an integer, a pair of integers "nnn/ddd", or a number in the fixed or floating point format.
	base	is the base in which to interpret the string.

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::uminusExpr

(

const Expr &

child

)

[pure virtual]

Unary minus.

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::plusExpr	(	const Expr &	left,
		const Expr &	right
	)			[pure virtual]

Create 2-element sum (left + right).

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::plusExpr

(

const std::vector< Expr > &

children

)

[pure virtual]

Create n-element sum.

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::minusExpr	(	const Expr &	left,
		const Expr &	right
	)			[pure virtual]

Make a difference (left - right).

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::multExpr	(	const Expr &	left,
		const Expr &	right
	)			[pure virtual]

Create a product (left * right).

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::powExpr	(	const Expr &	x,
		const Expr &	n
	)			[pure virtual]

Create a power expression (x ^ n); n must be integer.

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::divideExpr	(	const Expr &	numerator,
		const Expr &	denominator
	)			[pure virtual]

Create expression x / y.

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::ltExpr	(	const Expr &	left,
		const Expr &	right
	)			[pure virtual]

Create (left < right).

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::leExpr	(	const Expr &	left,
		const Expr &	right
	)			[pure virtual]

Create (left <= right).

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::gtExpr	(	const Expr &	left,
		const Expr &	right
	)			[pure virtual]

Create (left > right).

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::geExpr	(	const Expr &	left,
		const Expr &	right
	)			[pure virtual]

Create (left >= right).

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::recordExpr	(	const std::string &	field,
		const Expr &	expr
	)			[pure virtual]

Create a 1-element record value (# field := expr #).

Fields will be sorted automatically

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::recordExpr	(	const std::string &	field0,
		const Expr &	expr0,
		const std::string &	field1,
		const Expr &	expr1
	)			[pure virtual]

Create a 2-element record value (# field0 := expr0, field1 := expr1 #).

Fields will be sorted automatically

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::recordExpr	(	const std::string &	field0,
		const Expr &	expr0,
		const std::string &	field1,
		const Expr &	expr1,
		const std::string &	field2,
		const Expr &	expr2
	)			[pure virtual]

Create a 3-element record value (# field_i := expr_i #).

Fields will be sorted automatically

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::recordExpr	(	const std::vector< std::string > &	fields,
		const std::vector< Expr > &	exprs
	)			[pure virtual]

Create an n-element record value (# field_i := expr_i #).

Parameters:

	fields
	exprs	must be the same length as fields

Fields will be sorted automatically

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::recSelectExpr	(	const Expr &	record,
		const std::string &	field
	)			[pure virtual]

Create record.field (field selection).

Create an expression representing the selection of a field from a record.

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::recUpdateExpr	(	const Expr &	record,
		const std::string &	field,
		const Expr &	newValue
	)			[pure virtual]

Record update; equivalent to "record WITH .field := newValue".

Notice the `.' before field in the presentation language (and the comment above); this is to distinguish it from datatype update.

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::readExpr	(	const Expr &	array,
		const Expr &	index
	)			[pure virtual]

Create an expression array[index] (array access).

Create an expression for the value of array at the given index

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::writeExpr	(	const Expr &	array,
		const Expr &	index,
		const Expr &	newValue
	)			[pure virtual]

Array update; equivalent to "array WITH index := newValue".

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::newBVConstExpr	(	const std::string &	s,
		int	base = 2
	)			[pure virtual]

'numbits' is the number of bits in the result

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::newBVConstExpr

(

const std::vector< bool > &

bits

)

[pure virtual]

'numbits' is the number of bits in the result

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::newBVConstExpr	(	const Rational &	r,
		int	len = 0
	)			[pure virtual]

'numbits' is the number of bits in the result

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::newConcatExpr	(	const Expr &	t1,
		const Expr &	t2
	)			[pure virtual]

'numbits' is the number of bits in the result

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::newConcatExpr

(

const std::vector< Expr > &

kids

)

[pure virtual]

'numbits' is the number of bits in the result

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::newBVExtractExpr	(	const Expr &	e,
		int	hi,
		int	low
	)			[pure virtual]

'numbits' is the number of bits in the result

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::newBVNegExpr

(

const Expr &

t1

)

[pure virtual]

'numbits' is the number of bits in the result

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::newBVAndExpr	(	const Expr &	t1,
		const Expr &	t2
	)			[pure virtual]

'numbits' is the number of bits in the result

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::newBVAndExpr

(

const std::vector< Expr > &

kids

)

[pure virtual]

'numbits' is the number of bits in the result

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::newBVOrExpr	(	const Expr &	t1,
		const Expr &	t2
	)			[pure virtual]

'numbits' is the number of bits in the result

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::newBVOrExpr

(

const std::vector< Expr > &

kids

)

[pure virtual]

'numbits' is the number of bits in the result

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::newBVXorExpr	(	const Expr &	t1,
		const Expr &	t2
	)			[pure virtual]

'numbits' is the number of bits in the result

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::newBVXorExpr

(

const std::vector< Expr > &

kids

)

[pure virtual]

'numbits' is the number of bits in the result

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::newBVXnorExpr	(	const Expr &	t1,
		const Expr &	t2
	)			[pure virtual]

'numbits' is the number of bits in the result

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::newBVXnorExpr

(

const std::vector< Expr > &

kids

)

[pure virtual]

'numbits' is the number of bits in the result

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::newBVNandExpr	(	const Expr &	t1,
		const Expr &	t2
	)			[pure virtual]

'numbits' is the number of bits in the result

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::newBVNorExpr	(	const Expr &	t1,
		const Expr &	t2
	)			[pure virtual]

'numbits' is the number of bits in the result

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::newBVCompExpr	(	const Expr &	t1,
		const Expr &	t2
	)			[pure virtual]

'numbits' is the number of bits in the result

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::newBVLTExpr	(	const Expr &	t1,
		const Expr &	t2
	)			[pure virtual]

'numbits' is the number of bits in the result

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::newBVLEExpr	(	const Expr &	t1,
		const Expr &	t2
	)			[pure virtual]

'numbits' is the number of bits in the result

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::newBVSLTExpr	(	const Expr &	t1,
		const Expr &	t2
	)			[pure virtual]

'numbits' is the number of bits in the result

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::newBVSLEExpr	(	const Expr &	t1,
		const Expr &	t2
	)			[pure virtual]

'numbits' is the number of bits in the result

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::newSXExpr	(	const Expr &	t1,
		int	len
	)			[pure virtual]

'numbits' is the number of bits in the result

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::newBVUminusExpr

(

const Expr &

t1

)

[pure virtual]

'numbits' is the number of bits in the result

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::newBVSubExpr	(	const Expr &	t1,
		const Expr &	t2
	)			[pure virtual]

'numbits' is the number of bits in the result

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::newBVPlusExpr	(	int	numbits,
		const std::vector< Expr > &	k
	)			[pure virtual]

'numbits' is the number of bits in the result

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::newBVPlusExpr	(	int	numbits,
		const Expr &	t1,
		const Expr &	t2
	)			[pure virtual]

'numbits' is the number of bits in the result

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::newBVMultExpr	(	int	numbits,
		const Expr &	t1,
		const Expr &	t2
	)			[pure virtual]

'numbits' is the number of bits in the result

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::newBVUDivExpr	(	const Expr &	t1,
		const Expr &	t2
	)			[pure virtual]

'numbits' is the number of bits in the result

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::newBVURemExpr	(	const Expr &	t1,
		const Expr &	t2
	)			[pure virtual]

'numbits' is the number of bits in the result

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::newBVSDivExpr	(	const Expr &	t1,
		const Expr &	t2
	)			[pure virtual]

'numbits' is the number of bits in the result

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::newBVSRemExpr	(	const Expr &	t1,
		const Expr &	t2
	)			[pure virtual]

'numbits' is the number of bits in the result

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::newBVSModExpr	(	const Expr &	t1,
		const Expr &	t2
	)			[pure virtual]

'numbits' is the number of bits in the result

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::newFixedLeftShiftExpr	(	const Expr &	t1,
		int	r
	)			[pure virtual]

'numbits' is the number of bits in the result

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::newFixedConstWidthLeftShiftExpr	(	const Expr &	t1,
		int	r
	)			[pure virtual]

'numbits' is the number of bits in the result

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::newFixedRightShiftExpr	(	const Expr &	t1,
		int	r
	)			[pure virtual]

'numbits' is the number of bits in the result

Implemented in CVC3::VCL.

virtual Rational CVC3::ValidityChecker::computeBVConst

(

const Expr &

e

)

[pure virtual]

'numbits' is the number of bits in the result

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::tupleExpr

(

const std::vector< Expr > &

exprs

)

[pure virtual]

Tuple expression.

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::tupleSelectExpr	(	const Expr &	tuple,
		int	index
	)			[pure virtual]

Tuple select; equivalent to "tuple.n", where n is an numeral (e.g. tup.5).

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::tupleUpdateExpr	(	const Expr &	tuple,
		int	index,
		const Expr &	newValue
	)			[pure virtual]

Tuple update; equivalent to "tuple WITH index := newValue".

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::datatypeConsExpr	(	const std::string &	constructor,
		const std::vector< Expr > &	args
	)			[pure virtual]

Datatype constructor expression.

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::datatypeSelExpr	(	const std::string &	selector,
		const Expr &	arg
	)			[pure virtual]

Datatype selector expression.

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::datatypeTestExpr	(	const std::string &	constructor,
		const Expr &	arg
	)			[pure virtual]

Datatype tester expression.

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::boundVarExpr	(	const std::string &	name,
		const std::string &	uid,
		const Type &	type
	)			[pure virtual]

Create a bound variable with a given name, unique ID (uid) and type.

Parameters:

	name	is the name of the variable
	uid	is the unique ID (a string), which must be unique for each variable
	type	is its type. The type cannot be a function type.

Returns:

an Expr representation of a new variable

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::forallExpr	(	const std::vector< Expr > &	vars,
		const Expr &	body
	)			[pure virtual]

Universal quantifier.

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::forallExpr	(	const std::vector< Expr > &	vars,
		const Expr &	body,
		const std::vector< std::vector< Expr > > &	triggers
	)			[pure virtual]

Universal quantifier with triggers.

Implemented in CVC3::VCL.

virtual void CVC3::ValidityChecker::setTriggers	(	const Expr &	e,
		const std::vector< std::vector< Expr > > &	triggers
	)			[pure virtual]

Set triggers for quantifier instantiation.

Parameters:

	e	is the expression for which triggers are being set.
	Each	item in triggers is a vector of Expr containing one or more patterns. A pattern is a term or Atomic predicate sub-expression of e. A vector containing more than one pattern is treated as a multi-trigger. Patterns will be matched in the order they occur in the vector.

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::existsExpr	(	const std::vector< Expr > &	vars,
		const Expr &	body
	)			[pure virtual]

Existential quantifier.

Implemented in CVC3::VCL.

virtual Op CVC3::ValidityChecker::lambdaExpr	(	const std::vector< Expr > &	vars,
		const Expr &	body
	)			[pure virtual]

Lambda-expression.

Implemented in CVC3::VCL.

virtual Op CVC3::ValidityChecker::transClosure

(

const Op &

op

)

[pure virtual]

Transitive closure of a binary predicate.

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::simulateExpr	(	const Expr &	f,
		const Expr &	s0,
		const std::vector< Expr > &	inputs,
		const Expr &	n
	)			[pure virtual]

Symbolic simulation expression.

Parameters:

	f	is the next state function (LAMBDA-expression)
	s0	is the initial state
	inputs	is the vector of LAMBDA-expressions representing the sequences of inputs to f
	n	is a constant, the number of cycles to run the simulation.

Implemented in CVC3::VCL.

virtual void CVC3::ValidityChecker::setResourceLimit

(

unsigned

limit

)

[pure virtual]

Set the resource limit (0==unlimited, 1==exhausted).

Currently, the limit is the total number of processed facts.

Implemented in CVC3::VCL.

virtual void CVC3::ValidityChecker::setTimeLimit

(

unsigned

limit

)

[pure virtual]

Set a time limit in tenth of a second,.

counting the cpu time used by the current process from now on. Currently, when the limit is reached, cvc3 tries to quickly terminate, probably with the status unknown.

Implemented in CVC3::VCL.

virtual void CVC3::ValidityChecker::assertFormula

(

const Expr &

e

)

[pure virtual]

Assert a new formula in the current context.

This creates the assumption e |- e. The formula must have Boolean type.

Implemented in CVC3::VCL.

Referenced by SAT::CNF_Manager::cons(), and CVC3::VCCmd::evaluateCommand().

virtual void CVC3::ValidityChecker::registerAtom

(

const Expr &

e

)

[pure virtual]

Register an atomic formula of interest.

Registered atoms are tracked by the decision procedures. If one of them is deduced to be true or false, it is added to a list of implied literals. Implied literals can be retrieved with the getImpliedLiteral function

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::getImpliedLiteral

(

)

[pure virtual]

Return next literal implied by last assertion. Null Expr if none.

Returned literals are either registered atomic formulas or their negation

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::simplify

(

const Expr &

e

)

[pure virtual]

Simplify e with respect to the current context.

Implemented in CVC3::VCL.

Referenced by CVC3::VCCmd::evaluateCommand().

virtual QueryResult CVC3::ValidityChecker::query

(

const Expr &

e

)

[pure virtual]

Check validity of e in the current context.

If it returns VALID, the scope and context are the same as when called. If it returns INVALID, the context will be one which falsifies the query. If it returns UNKNOWN, the context will falsify the query, but the context may be inconsistent. Finally, if it returns ABORT, the context will be one which satisfies as much as possible.

Parameters:

e

is the queried formula

Implemented in CVC3::VCL.

Referenced by SAT::CNF_Manager::cons(), and CVC3::VCCmd::evaluateCommand().

virtual QueryResult CVC3::ValidityChecker::checkUnsat

(

const Expr &

e

)

[pure virtual]

Check satisfiability of the expr in the current context.

Equivalent to query(!e)

Implemented in CVC3::VCL.

Referenced by CVC3::VCCmd::evaluateCommand().

virtual QueryResult CVC3::ValidityChecker::checkContinue

(

)

[pure virtual]

Get the next model.

This method should only be called after a query which returns INVALID. Its return values are as for query().

Implemented in CVC3::VCL.

Referenced by CVC3::VCCmd::evaluateCommand().

virtual QueryResult CVC3::ValidityChecker::restart

(

const Expr &

e

)

[pure virtual]

Restart the most recent query with e as an additional assertion.

This method should only be called after a query which returns INVALID. Its return values are as for query().

Implemented in CVC3::VCL.

Referenced by CVC3::VCCmd::evaluateCommand().

virtual void CVC3::ValidityChecker::returnFromCheck

(

)

[pure virtual]

Returns to context immediately before last invalid query.

This method should only be called after a query which returns false.

Implemented in CVC3::VCL.

virtual void CVC3::ValidityChecker::getUserAssumptions

(

std::vector< Expr > &

assumptions

)

[pure virtual]

Get assumptions made by the user in this and all previous contexts.

User assumptions are created either by calls to assertFormula or by a call to query. In the latter case, the negated query is added as an assumption.

Parameters:

assumptions

should be empty on entry.

Implemented in CVC3::VCL.

virtual void CVC3::ValidityChecker::getInternalAssumptions

(

std::vector< Expr > &

assumptions

)

[pure virtual]

Get assumptions made internally in this and all previous contexts.

Internal assumptions are literals assumed by the sat solver.

Parameters:

assumptions

should be empty on entry.

Implemented in CVC3::VCL.

virtual void CVC3::ValidityChecker::getAssumptions

(

std::vector< Expr > &

assumptions

)

[pure virtual]

Get all assumptions made in this and all previous contexts.

Parameters:

assumptions

should be empty on entry.

Implemented in CVC3::VCL.

Referenced by CVC3::VCCmd::evaluateCommand().

virtual void CVC3::ValidityChecker::getAssumptionsUsed

(

std::vector< Expr > &

assumptions

)

[pure virtual]

Returns the set of assumptions used in the proof of queried formula.

It returns a subset of getAssumptions(). If the last query was false or there has not yet been a query, it does nothing. NOTE: this functionality is not supported yet

Parameters:

assumptions

should be empty on entry.

Implemented in CVC3::VCL.

Referenced by CVC3::VCCmd::evaluateCommand().

virtual Expr CVC3::ValidityChecker::getProofQuery

(

)

[pure virtual]

Set the resource limit (0==unlimited, 1==exhausted).

Currently, the limit is the total number of processed facts.

Implemented in CVC3::VCL.

virtual void CVC3::ValidityChecker::getCounterExample	(	std::vector< Expr > &	assumptions,
		bool	inOrder = true
	)			[pure virtual]

Return the internal assumptions that make the queried formula false.

This method should only be called after a query which returns false. It will try to return the simplest possible subset of the internal assumptions sufficient to make the queried expression false.

Parameters:

	assumptions	should be empty on entry.
	inOrder	if true, returns the assumptions in the order they were made. This is slightly more expensive than inOrder = false.

Implemented in CVC3::VCL.

Referenced by CVC3::VCCmd::printCounterExample().

virtual void CVC3::ValidityChecker::getConcreteModel

(

ExprMap< Expr > &

m

)

[pure virtual]

Will assign concrete values to all user created variables.

This function should only be called after a query which return false.

Implemented in CVC3::VCL.

Referenced by CVC3::VCCmd::printModel().

virtual QueryResult CVC3::ValidityChecker::tryModelGeneration

(

)

[pure virtual]

If the result of the last query was UNKNOWN try to actually build the model to verify the result.

This function should only be called after a query which return unknown.

Implemented in CVC3::VCL.

Referenced by CVC3::VCCmd::evaluateCommand().

virtual FormulaValue CVC3::ValidityChecker::value

(

const Expr &

e

)

[pure virtual]

Set the resource limit (0==unlimited, 1==exhausted).

Currently, the limit is the total number of processed facts.

Implemented in CVC3::VCL.

virtual bool CVC3::ValidityChecker::inconsistent

(

std::vector< Expr > &

assumptions

)

[pure virtual]

Returns true if the current context is inconsistent.

Also returns a minimal set of assertions used to determine the inconsistency.

Parameters:

assumptions

should be empty on entry.

Implemented in CVC3::VCL.

virtual bool CVC3::ValidityChecker::inconsistent

(

)

[pure virtual]

Returns true if the current context is inconsistent.

Implemented in CVC3::VCL.

virtual bool CVC3::ValidityChecker::incomplete

(

)

[pure virtual]

Returns true if the invalid result from last query() is imprecise.

Some decision procedures in CVC are incomplete (quantifier elimination, non-linear arithmetic, etc.). If any incomplete features were used during the last query(), and the result is "invalid" (query() returns false), then this result is inconclusive. It means that the system gave up the search for contradiction at some point.

Implemented in CVC3::VCL.

Referenced by CVC3::VCCmd::evaluateCommand(), and CVC3::VCCmd::reportResult().

virtual bool CVC3::ValidityChecker::incomplete

(

std::vector< std::string > &

reasons

)

[pure virtual]

Returns true if the invalid result from last query() is imprecise.

See also:

incomplete()

The argument is filled with the reasons for incompleteness (they are intended to be shown to the end user).

Implemented in CVC3::VCL.

virtual Proof CVC3::ValidityChecker::getProof

(

)

[pure virtual]

Returns the proof term for the last proven query.

If there has not been a successful query, it should return a NULL proof

Implemented in CVC3::VCL.

Referenced by CVC3::VCCmd::evaluateCommand().

virtual Expr CVC3::ValidityChecker::getTCC

(

)

[pure virtual]

Returns the TCC of the last assumption or query.

Returns Null if no assumptions or queries were performed.

Implemented in CVC3::VCL.

Referenced by CVC3::VCCmd::evaluateCommand().

virtual void CVC3::ValidityChecker::getAssumptionsTCC

(

std::vector< Expr > &

assumptions

)

[pure virtual]

Return the set of assumptions used in the proof of the last TCC.

Implemented in CVC3::VCL.

Referenced by CVC3::VCCmd::evaluateCommand().

virtual Proof CVC3::ValidityChecker::getProofTCC

(

)

[pure virtual]

Returns the proof of TCC of the last assumption or query.

Returns Null if no assumptions or queries were performed.

Implemented in CVC3::VCL.

Referenced by CVC3::VCCmd::evaluateCommand().

virtual Expr CVC3::ValidityChecker::getClosure

(

)

[pure virtual]

After successful query, return its closure |- Gamma => phi.

Turn a valid query Gamma |- phi into an implication |- Gamma => phi.

Returns Null if last query was invalid.

Implemented in CVC3::VCL.

Referenced by CVC3::VCCmd::evaluateCommand().

virtual Proof CVC3::ValidityChecker::getProofClosure

(

)

[pure virtual]

Construct a proof of the query closure |- Gamma => phi.

Returns Null if last query was Invalid.

Implemented in CVC3::VCL.

Referenced by CVC3::VCCmd::evaluateCommand().

virtual int CVC3::ValidityChecker::stackLevel

(

)

[pure virtual]

Returns the current stack level. Initial level is 0.

Implemented in CVC3::VCL.

Referenced by CVC3::VCCmd::evaluateCommand().

virtual void CVC3::ValidityChecker::push

(

)

[pure virtual]

Checkpoint the current context and increase the scope level.

Implemented in CVC3::VCL.

Referenced by SAT::CNF_Manager::cons(), and CVC3::VCCmd::evaluateCommand().

virtual void CVC3::ValidityChecker::pop

(

)

[pure virtual]

Restore the current context to its state at the last checkpoint.

Implemented in CVC3::VCL.

Referenced by SAT::CNF_Manager::cons(), and CVC3::VCCmd::evaluateCommand().

virtual void CVC3::ValidityChecker::popto

(

int

stackLevel

)

[pure virtual]

Restore the current context to the given stackLevel.

Parameters:

stackLevel

should be greater than or equal to 0 and less than or equal to the current scope level.

Implemented in CVC3::VCL.

Referenced by CVC3::VCCmd::evaluateCommand().

virtual int CVC3::ValidityChecker::scopeLevel

(

)

[pure virtual]

Returns the current scope level. Initially, the scope level is 1.

Implemented in CVC3::VCL.

Referenced by CVC3::VCCmd::evaluateCommand(), CVC3::VCCmd::printCounterExample(), and CVC3::VCCmd::printModel().

virtual void CVC3::ValidityChecker::pushScope

(

)

[pure virtual]

Checkpoint the current context and increase the internal scope level. Do not use unless you know what you're doing!

Implemented in CVC3::VCL.

Referenced by CVC3::VCCmd::evaluateCommand().

virtual void CVC3::ValidityChecker::popScope

(

)

[pure virtual]

Restore the current context to its state at the last internal checkpoint. Do not use unless you know what you're doing!

Implemented in CVC3::VCL.

Referenced by CVC3::VCCmd::evaluateCommand().

virtual void CVC3::ValidityChecker::poptoScope

(

int

scopeLevel

)

[pure virtual]

Restore the current context to the given scopeLevel.

Parameters:

scopeLevel

should be less than or equal to the current scope level.

If scopeLevel is less than 1, then the current context is reset and the scope level is set to 1.

Implemented in CVC3::VCL.

Referenced by CVC3::VCCmd::evaluateCommand().

virtual Context* CVC3::ValidityChecker::getCurrentContext

(

)

[pure virtual]

Get the current context.

Implemented in CVC3::VCL.

Referenced by CVC3::VCCmd::VCCmd().

virtual void CVC3::ValidityChecker::reset

(

)

[pure virtual]

Destroy and recreate validity checker: resets everything except for flags.

Implemented in CVC3::VCL.

Referenced by CVC3::VCCmd::processCommands().

virtual void CVC3::ValidityChecker::loadFile	(	const std::string &	fileName,
		InputLanguage	lang = PRESENTATION_LANG,
		bool	interactive = false,
		bool	calledFromParser = false
	)			[pure virtual]

Read and execute the commands from a file given by name ("" means stdin).

Implemented in CVC3::VCL.

Referenced by CVC3::VCCmd::evaluateCommand(), and main().

virtual void CVC3::ValidityChecker::loadFile	(	std::istream &	is,
		InputLanguage	lang = PRESENTATION_LANG,
		bool	interactive = false
	)			[pure virtual]

Read and execute the commands from a stream.

Implemented in CVC3::VCL.

virtual Statistics& CVC3::ValidityChecker::getStatistics

(

)

[pure virtual]

Get statistics object.

Implemented in CVC3::VCL.

Referenced by sighandler().

virtual void CVC3::ValidityChecker::printStatistics

(

)

[pure virtual]

Print collected statistics to stdout.

Implemented in CVC3::VCL.

Referenced by main().

---

The documentation for this class was generated from the following files:

• vc.h
• vcl.cpp