CVC3::ValidityChecker Class Reference
[Validity Checker API]

Generic API for a validity checker. More...

#include <vc.h>

Inheritance diagram for CVC3::ValidityChecker:

Inheritance graph
[legend]
List of all members.

Public Member Functions

Type-related methods
Methods for creating and looking up types
See also:
class Type


General Expr methods
See also:
class Expr

class ExprManager



Core expression methods
Methods for manipulating core expressions

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

User-defined (uninterpreted) function methods
Methods for manipulating uninterpreted function expressions

Arithmetic expression methods
Methods for manipulating arithmetic expressions

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

Record expression methods
Methods for manipulating record expressions

Array expression methods
Methods for manipulating array expressions

Bitvector expression methods
Methods for manipulating bitvector expressions

Other expression methods
Methods for manipulating other kinds of expressions

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.

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. *

Reading files
Methods for reading external files

Reporting Statistics
Methods for collecting and reporting run-time statistics

Static Public Member Functions


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 92 of file vc.h.


Constructor & Destructor Documentation

CVC3::ValidityChecker::ValidityChecker (  )  [inline]

Constructor.

Definition at line 96 of file vc.h.

virtual CVC3::ValidityChecker::~ValidityChecker (  )  [inline, virtual]

Destructor.

Definition at line 98 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 $\exists x. pred(x))$. 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]

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::newBVConstExpr ( const std::vector< bool > &  bits  )  [pure virtual]

Implemented in CVC3::VCL.

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

Implemented in CVC3::VCL.

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

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::newConcatExpr ( const std::vector< Expr > &  kids  )  [pure virtual]

Implemented in CVC3::VCL.

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

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::newBVNegExpr ( const Expr t1  )  [pure virtual]

Implemented in CVC3::VCL.

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

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::newBVAndExpr ( const std::vector< Expr > &  kids  )  [pure virtual]

Implemented in CVC3::VCL.

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

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::newBVOrExpr ( const std::vector< Expr > &  kids  )  [pure virtual]

Implemented in CVC3::VCL.

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

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::newBVXorExpr ( const std::vector< Expr > &  kids  )  [pure virtual]

Implemented in CVC3::VCL.

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

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::newBVXnorExpr ( const std::vector< Expr > &  kids  )  [pure virtual]

Implemented in CVC3::VCL.

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

Implemented in CVC3::VCL.

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

Implemented in CVC3::VCL.

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

Implemented in CVC3::VCL.

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

Implemented in CVC3::VCL.

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

Implemented in CVC3::VCL.

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

Implemented in CVC3::VCL.

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

Implemented in CVC3::VCL.

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

Implemented in CVC3::VCL.

virtual Expr CVC3::ValidityChecker::newBVUminusExpr ( const Expr t1  )  [pure virtual]

Implemented in CVC3::VCL.

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

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]

Implemented in CVC3::VCL.

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

Implemented in CVC3::VCL.

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

Implemented in CVC3::VCL.

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

Implemented in CVC3::VCL.

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

Implemented in CVC3::VCL.

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

Implemented in CVC3::VCL.

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

Implemented in CVC3::VCL.

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

Implemented in CVC3::VCL.

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

Implemented in CVC3::VCL.

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

Implemented in CVC3::VCL.

virtual Rational CVC3::ValidityChecker::computeBVConst ( const Expr e  )  [pure virtual]

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 Expr trigger 
) [pure virtual]

Universal quantifier with a trigger.

Implemented in CVC3::VCL.

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

Universal quantifier with a set of triggers.

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 a set of multi-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 the expression for which triggers are being set.
triggers 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 void CVC3::ValidityChecker::setTriggers ( const Expr e,
const std::vector< Expr > &  triggers 
) [pure virtual]

Set triggers for quantifier instantiation (no multi-triggers).

Implemented in CVC3::VCL.

virtual void CVC3::ValidityChecker::setTrigger ( const Expr e,
const Expr trigger 
) [pure virtual]

Set a single trigger for quantifier instantiation.

Implemented in CVC3::VCL.

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

Set a single multi-trigger for quantifier instantiation.

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]

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:
Generated on Wed Nov 18 16:17:29 2009 for CVC3 by  doxygen 1.5.2