#include <string_refinement.h>

Inheritance diagram for string_refinementt:

Collaboration diagram for string_refinementt:

Classes
struct	configt

struct	infot
	string_refinementt constructor arguments More...

Public Member Functions
	string_refinementt (const infot &)

std::string	decision_procedure_text () const override
	Return a textual description of the decision procedure.

exprt	get (const exprt &expr) const override
	Evaluates the given expression in the valuation found by string_refinementt::dec_solve.

void	set_to (const exprt &expr, bool value) override
	Record the constraints to ensure that the expression is true when the boolean is true and false otherwise.

Public Member Functions inherited from bv_refinementt
	bv_refinementt (const infot &info)

Public Member Functions inherited from bv_pointerst
	bv_pointerst (const namespacet &, propt &, message_handlert &, bool get_array_constraints=false)

void	finish_eager_conversion () override

endianness_mapt	endianness_map (const typet &, bool little_endian) const override

Public Member Functions inherited from boolbvt
	boolbvt (const namespacet &_ns, propt &_prop, message_handlert &message_handler, bool get_array_constraints=false)

virtual const bvt &	convert_bv (const exprt &expr, const std::optional< std::size_t > expected_width={})
	Convert expression to vector of literalts, using an internal cache to speed up conversion if available.

void	print_assignment (std::ostream &out) const override
	Print satisfying assignment to `out`.

exprt	handle (const exprt &) override
	Generate a handle, which is an expression that has the same value as the argument in any model that is generated; this offers an efficient way to refer to the expression in subsequent calls to get or set_to.

void	clear_cache () override

mp_integer	get_value (const bvt &bv)

mp_integer	get_value (const bvt &bv, std::size_t offset, std::size_t width)

const boolbv_mapt &	get_map () const

virtual std::size_t	boolbv_width (const typet &type) const

virtual endianness_mapt	endianness_map (const typet &type) const

Public Member Functions inherited from arrayst
	arrayst (const namespacet &_ns, propt &_prop, message_handlert &message_handler, bool get_array_constraints=false)

literalt	record_array_equality (const equal_exprt &expr)

void	record_array_index (const index_exprt &expr)

Public Member Functions inherited from equalityt
	equalityt (propt &_prop, message_handlert &message_handler)

virtual literalt	equality (const exprt &e1, const exprt &e2)

void	finish_eager_conversion () override

Public Member Functions inherited from prop_conv_solvert
	prop_conv_solvert (propt &_prop, message_handlert &message_handler)

virtual	~prop_conv_solvert ()=default

void	print_assignment (std::ostream &out) const override
	Print satisfying assignment to `out`.

tvt	l_get (literalt a) const override
	Return value of literal `l` from satisfying assignment.

exprt	handle (const exprt &expr) override
	Generate a handle, which is an expression that has the same value as the argument in any model that is generated; this offers an efficient way to refer to the expression in subsequent calls to get or set_to.

void	set_frozen (literalt)

void	set_frozen (const bvt &)

void	set_all_frozen ()

literalt	convert (const exprt &expr) override
	Convert a Boolean expression and return the corresponding literal.

bool	is_in_conflict (const exprt &expr) const override
	Returns true if an expression is in the final conflict leading to UNSAT.

void	push () override
	Push a new context on the stack This context becomes a child context nested in the current context.

void	push (const std::vector< exprt > &assumptions) override
	Push `assumptions` in form of `literal_exprt`

void	pop () override
	Pop whatever is on top of the stack.

const cachet &	get_cache () const

const symbolst &	get_symbols () const

void	set_time_limit_seconds (uint32_t lim) override
	Set the limit for the solver to time out in seconds.

std::size_t	get_number_of_solver_calls () const override
	Return the number of incremental solver calls.

hardness_collectort *	get_hardness_collector ()

Public Member Functions inherited from conflict_providert
virtual	~conflict_providert ()=default

Public Member Functions inherited from prop_convt
virtual	~prop_convt ()

Public Member Functions inherited from stack_decision_proceduret
virtual	~stack_decision_proceduret ()=default

Public Member Functions inherited from decision_proceduret
void	set_to_true (const exprt &)
	For a Boolean expression `expr`, add the constraint 'expr'.

void	set_to_false (const exprt &)
	For a Boolean expression `expr`, add the constraint 'not expr'.

resultt	operator() ()
	Run the decision procedure to solve the problem This corresponds to SMT-LIB's check-sat.

resultt	operator() (const exprt &assumption)
	Run the decision procedure to solve the problem under the given assumption.

virtual	~decision_proceduret ()

Public Member Functions inherited from solver_resource_limitst
virtual	~solver_resource_limitst ()=default

Protected Member Functions
decision_proceduret::resultt	dec_solve (const exprt &) override
	Main decision procedure of the solver.

Protected Member Functions inherited from bv_refinementt
void	finish_eager_conversion_arrays () override
	generate array constraints

bvt	convert_mult (const mult_exprt &expr) override

bvt	convert_div (const div_exprt &expr) override

bvt	convert_mod (const mod_exprt &expr) override

bvt	convert_floatbv_op (const ieee_float_op_exprt &) override

Protected Member Functions inherited from bv_pointerst
std::size_t	get_object_width (const pointer_typet &) const

std::size_t	get_offset_width (const pointer_typet &) const

std::size_t	get_address_width (const pointer_typet &) const

bvt	encode (const mp_integer &object, const pointer_typet &) const

virtual bvt	convert_pointer_type (const exprt &)

virtual bvt	add_addr (const exprt &)

literalt	convert_rest (const exprt &) override

bvt	convert_bitvector (const exprt &) override
	Converts an expression into its gate-level representation and returns a vector of literals corresponding to the outputs of the Boolean circuit.

exprt	bv_get_rec (const exprt &, const bvt &, std::size_t offset) const override

std::optional< bvt >	convert_address_of_rec (const exprt &)

bvt	offset_arithmetic (const pointer_typet &, const bvt &, const mp_integer &)

bvt	offset_arithmetic (const pointer_typet &, const bvt &, const mp_integer &factor, const exprt &index)

bvt	offset_arithmetic (const pointer_typet &type, const bvt &bv, const exprt &factor, const exprt &index)

bvt	offset_arithmetic (const pointer_typet &, const bvt &, const mp_integer &factor, const bvt &index_bv)

std::pair< exprt, exprt >	prepare_postponed_is_dynamic_object (std::vector< symbol_exprt > &placeholders) const
	Create Boolean functions describing all dynamic and all not-dynamic object encodings over `placeholders` as input Boolean variables representing object bits.

std::unordered_map< exprt, exprt, irep_hash >	prepare_postponed_object_size (std::vector< symbol_exprt > &placeholders) const
	Create Boolean functions describing all objects of each known object size over `placeholders` as input Boolean variables representing object bits.

bvt	object_literals (const bvt &bv, const pointer_typet &type) const
	Given a pointer encoded in `bv`, extract the literals identifying the object that the pointer points to.

bvt	offset_literals (const bvt &bv, const pointer_typet &type) const
	Given a pointer encoded in `bv`, extract the literals representing the offset into an object that the pointer points to.

Protected Member Functions inherited from boolbvt
virtual bool	boolbv_set_equality_to_true (const equal_exprt &expr)

bvt	conversion_failed (const exprt &expr)
	Print that the expression of x has failed conversion, then return a vector of x's width.

bool	type_conversion (const typet &src_type, const bvt &src, const typet &dest_type, bvt &dest)

virtual literalt	convert_bv_rel (const binary_relation_exprt &)
	Flatten <, >, <= and >= expressions.

virtual literalt	convert_typecast (const typecast_exprt &expr)
	conversion from bitvector types to boolean

virtual literalt	convert_reduction (const unary_exprt &expr)

virtual literalt	convert_onehot (const unary_exprt &expr)

virtual literalt	convert_extractbit (const extractbit_exprt &expr)

virtual literalt	convert_binary_overflow (const binary_overflow_exprt &expr)

virtual literalt	convert_unary_overflow (const unary_overflow_exprt &expr)

virtual literalt	convert_equality (const equal_exprt &expr)

virtual literalt	convert_verilog_case_equality (const binary_relation_exprt &expr)

virtual literalt	convert_ieee_float_rel (const binary_relation_exprt &)

virtual literalt	convert_quantifier (const quantifier_exprt &expr)

virtual bvt	convert_index (const exprt &array, const mp_integer &index)
	index operator with constant index

virtual bvt	convert_index (const index_exprt &expr)

virtual bvt	convert_bswap (const bswap_exprt &expr)

virtual bvt	convert_byte_extract (const byte_extract_exprt &expr)

virtual bvt	convert_byte_update (const byte_update_exprt &expr)

virtual bvt	convert_constraint_select_one (const exprt &expr)

virtual bvt	convert_if (const if_exprt &expr)

virtual bvt	convert_struct (const struct_exprt &expr)

virtual bvt	convert_array (const exprt &expr)
	Flatten array.

virtual bvt	convert_complex (const complex_exprt &expr)

virtual bvt	convert_complex_real (const complex_real_exprt &expr)

virtual bvt	convert_complex_imag (const complex_imag_exprt &expr)

virtual bvt	convert_array_comprehension (const array_comprehension_exprt &)

virtual bvt	convert_let (const let_exprt &)

virtual bvt	convert_array_of (const array_of_exprt &expr)
	Flatten arrays constructed from a single element.

virtual bvt	convert_union (const union_exprt &expr)

virtual bvt	convert_empty_union (const empty_union_exprt &expr)

virtual bvt	convert_bv_typecast (const typecast_exprt &expr)

virtual bvt	convert_add_sub (const exprt &expr)

virtual bvt	convert_floatbv_mod_rem (const binary_exprt &)

virtual bvt	convert_floatbv_typecast (const floatbv_typecast_exprt &expr)

virtual bvt	convert_floatbv_round_to_integral (const floatbv_round_to_integral_exprt &)

virtual bvt	convert_member (const member_exprt &expr)

virtual bvt	convert_with (const with_exprt &expr)

virtual bvt	convert_update (const update_exprt &)

virtual bvt	convert_update_bit (const update_bit_exprt &)

virtual bvt	convert_update_bits (const update_bits_exprt &)

virtual bvt	convert_case (const exprt &expr)

virtual bvt	convert_cond (const cond_exprt &)

virtual bvt	convert_shift (const binary_exprt &expr)

virtual bvt	convert_bitwise (const exprt &expr)

virtual bvt	convert_unary_minus (const unary_minus_exprt &expr)

virtual bvt	convert_abs (const abs_exprt &expr)

virtual bvt	convert_concatenation (const concatenation_exprt &expr)

virtual bvt	convert_replication (const replication_exprt &expr)

virtual bvt	convert_constant (const constant_exprt &expr)

virtual bvt	convert_extractbits (const extractbits_exprt &expr)

virtual bvt	convert_symbol (const exprt &expr)

virtual bvt	convert_bv_reduction (const unary_exprt &expr)

virtual bvt	convert_not (const not_exprt &expr)

virtual bvt	convert_power (const binary_exprt &expr)

virtual bvt	convert_function_application (const function_application_exprt &expr)

virtual bvt	convert_bitreverse (const bitreverse_exprt &expr)

virtual bvt	convert_saturating_add_sub (const binary_exprt &expr)

virtual bvt	convert_overflow_result (const overflow_result_exprt &expr)

virtual bvt	convert_popcount (const popcount_exprt &expr)

bvt	convert_update_bits (bvt src, const exprt &index, const bvt &new_value)

void	convert_with (const typet &type, const exprt &where, const exprt &new_value, const bvt &prev_bv, bvt &next_bv)

void	convert_with_bv (const exprt &index, const exprt &new_value, const bvt &prev_bv, bvt &next_bv)

void	convert_with_array (const array_typet &type, const exprt &index, const exprt &new_value, const bvt &prev_bv, bvt &next_bv)

void	convert_with_union (const union_typet &type, const exprt &new_value, const bvt &prev_bv, bvt &next_bv)

void	convert_with_struct (const struct_typet &type, const exprt &where, const exprt &new_value, const bvt &prev_bv, bvt &next_bv)

void	convert_update_rec (const exprt::operandst &designator, std::size_t d, const typet &type, std::size_t offset, const exprt &new_value, bvt &bv)

virtual exprt	bv_get_unbounded_array (const exprt &) const

exprt	bv_get (const bvt &bv, const typet &type) const

exprt	bv_get_cache (const exprt &expr) const

bool	is_unbounded_array (const typet &type) const override

void	finish_eager_conversion_quantifiers ()

offset_mapt	build_offset_map (const struct_typet &src)

binding_exprt::variablest	fresh_binding (const binding_exprt &)
	create new, unique variables for the given binding

Protected Member Functions inherited from arrayst
void	add_array_constraint (const lazy_constraintt &lazy, bool refine=true)
	adds array constraints (refine=true...lazily for the refinement loop)

void	display_array_constraint_count ()

std::string	enum_to_string (constraint_typet)

void	add_array_constraints ()

void	add_array_Ackermann_constraints ()

void	add_array_constraints_equality (const index_sett &index_set, const array_equalityt &array_equality)

void	add_array_constraints (const index_sett &index_set, const exprt &expr)

void	add_array_constraints_if (const index_sett &index_set, const if_exprt &exprt)

void	add_array_constraints_with (const index_sett &index_set, const with_exprt &expr)

void	add_array_constraints_update (const index_sett &index_set, const update_exprt &expr)

void	add_array_constraints_array_of (const index_sett &index_set, const array_of_exprt &exprt)

void	add_array_constraints_array_constant (const index_sett &index_set, const array_exprt &exprt)

void	add_array_constraints_comprehension (const index_sett &index_set, const array_comprehension_exprt &expr)

void	update_index_map (bool update_all)

void	update_index_map (std::size_t i)
	merge the indices into the root

void	collect_arrays (const exprt &a)

void	collect_indices ()

void	collect_indices (const exprt &a)

Protected Member Functions inherited from equalityt
virtual literalt	equality2 (const exprt &e1, const exprt &e2)

virtual void	add_equality_constraints ()

virtual void	add_equality_constraints (const typestructt &typestruct)

Protected Member Functions inherited from prop_conv_solvert
virtual std::optional< bool >	get_bool (const exprt &expr) const
	Get a boolean value from the model if the formula is satisfiable.

virtual literalt	convert_bool (const exprt &expr)

virtual bool	set_equality_to_true (const equal_exprt &expr)

virtual literalt	get_literal (const irep_idt &symbol)

virtual void	ignoring (const exprt &expr)

Private Types
typedef bv_refinementt	supert

Private Member Functions
	string_refinementt (const infot &, bool)

void	add_lemma (const exprt &lemma, bool simplify_lemma=true)
	Add the given lemma to the solver.

Private Attributes
const configt	config_

std::size_t	loop_bound_

string_constraint_generatort	generator

std::set< exprt >	seen_instances

string_axiomst	axioms

std::vector< exprt >	current_constraints

index_set_pairt	index_sets

union_find_replacet	symbol_resolve

std::vector< exprt >	equations

string_dependenciest	dependencies

Related Symbols
(Note that these are not member symbols.)
std::vector< exprt >	instantiate_not_contains (const string_not_contains_constraintt &axiom, const std::set< std::pair< exprt, exprt > > &index_pairs, const std::unordered_map< string_not_contains_constraintt, symbol_exprt > &witnesses)
	Instantiates a quantified formula representing `not_contains` by substituting the quantifiers and generating axioms.

Additional Inherited Members
Public Types inherited from boolbvt
enum class	unbounded_arrayt { U_NONE , U_ALL , U_AUTO }

Public Types inherited from arrayst
typedef equalityt	SUB

Public Types inherited from equalityt
using	SUB = prop_conv_solvert

Public Types inherited from prop_conv_solvert
typedef std::map< irep_idt, literalt >	symbolst

typedef std::unordered_map< exprt, literalt, irep_hash >	cachet

Public Types inherited from decision_proceduret
enum class	resultt { D_SATISFIABLE , D_UNSATISFIABLE , D_ERROR }
	Result of running the decision procedure. More...

Public Attributes inherited from boolbvt
unbounded_arrayt	unbounded_array

Public Attributes inherited from prop_conv_solvert
bool	use_cache = true

bool	equality_propagation = true

bool	freeze_all = false

Protected Types inherited from bv_pointerst
typedef boolbvt	SUB

typedef std::list< postponedt >	postponed_listt

Protected Types inherited from boolbvt
typedef arrayst	SUB

typedef std::unordered_map< const exprt, bvt, irep_hash >	bv_cachet

typedef std::list< quantifiert >	quantifier_listt

typedef std::vector< std::size_t >	offset_mapt

Protected Types inherited from arrayst
enum class	lazy_typet { ARRAY_ACKERMANN , ARRAY_WITH , ARRAY_IF , ARRAY_OF , ARRAY_TYPECAST , ARRAY_CONSTANT , ARRAY_COMPREHENSION , ARRAY_LET }

enum class	constraint_typet { ARRAY_ACKERMANN , ARRAY_WITH , ARRAY_IF , ARRAY_OF , ARRAY_TYPECAST , ARRAY_CONSTANT , ARRAY_COMPREHENSION , ARRAY_EQUALITY , ARRAY_LET }

typedef std::list< array_equalityt >	array_equalitiest

typedef std::set< exprt >	index_sett

typedef std::map< std::size_t, index_sett >	index_mapt

typedef std::map< constraint_typet, size_t >	array_constraint_countt

Protected Types inherited from equalityt
typedef std::unordered_map< const exprt, unsigned, irep_hash >	elementst

typedef std::map< std::pair< unsigned, unsigned >, literalt >	equalitiest

typedef std::map< unsigned, exprt >	elements_revt

typedef std::unordered_map< const typet, typestructt, irep_hash >	typemapt

Static Protected Member Functions inherited from bv_pointerst
static bvt	object_offset_encoding (const bvt &object, const bvt &offset)
	Construct a pointer encoding from given encodings of `object` and `offset`.

Protected Attributes inherited from bv_refinementt
configt	config_

Protected Attributes inherited from bv_pointerst
pointer_logict	pointer_logic

postponed_listt	postponed_list

Protected Attributes inherited from boolbvt
boolbv_widtht	bv_width

bv_utilst	bv_utils

functionst	functions

boolbv_mapt	map

bv_cachet	bv_cache

quantifier_listt	quantifier_list

numberingt< irep_idt >	string_numbering

std::size_t	scope_counter = 0

Protected Attributes inherited from arrayst
const namespacet &	ns

messaget	log

message_handlert &	message_handler

array_equalitiest	array_equalities

union_find< exprt, irep_hash >	arrays

index_mapt	index_map

bool	lazy_arrays

bool	incremental_cache

bool	get_array_constraints

std::list< lazy_constraintt >	lazy_array_constraints

std::map< exprt, bool >	expr_map

array_constraint_countt	array_constraint_count

std::set< std::size_t >	update_indices

std::unordered_set< irep_idt >	array_comprehension_args

Protected Attributes inherited from equalityt
typemapt	typemap

Protected Attributes inherited from prop_conv_solvert
bool	post_processing_done = false

symbolst	symbols

cachet	cache

propt &	prop

messaget	log

bvt	assumption_stack
	Assumptions on the stack.

std::size_t	context_literal_counter = 0
	To generate unique literal names for contexts.

std::vector< size_t >	context_size_stack
	`assumption_stack` is segmented in contexts; Number of assumptions in each context on the stack

Static Protected Attributes inherited from prop_conv_solvert
static const char *	context_prefix = "prop_conv::context$"

Detailed Description

Definition at line 63 of file string_refinement.h.

Member Typedef Documentation

◆ supert

typedef bv_refinementt string_refinementt::supert

private

Definition at line 93 of file string_refinement.h.

Constructor & Destructor Documentation

◆ string_refinementt() [1/2]

string_refinementt::string_refinementt ( const infot & info )

explicit

Definition at line 165 of file string_refinement.cpp.

◆ string_refinementt() [2/2]

string_refinementt::string_refinementt	(	const infot &	info,
		bool
	)

private

Definition at line 157 of file string_refinement.cpp.

Member Function Documentation

◆ add_lemma()

void string_refinementt::add_lemma	(	const exprt &	lemma,
		bool	simplify_lemma = `true`
	)

private

Add the given lemma to the solver.

Parameters

lemma	a Boolean expression
simplify_lemma	whether the lemma should be simplified before being given to the underlying solver.

Definition at line 908 of file string_refinement.cpp.

◆ dec_solve()

decision_proceduret::resultt string_refinementt::dec_solve ( const exprt & assumption )

overrideprotectedvirtual

Main decision procedure of the solver.

Looks for a valuation of variables compatible with the constraints that have been given to set_to so far.

The decision procedure initiated by string_refinementt::dec_solve is composed of several steps detailed below.

Symbol resolution

Pointer symbols which are set to be equal by constraints, are replaced by an single symbol in the solver. The symbol_solvert object used for this substitution is constructed by generate_symbol_resolution_from_equations(const std::vector<equal_exprt>&,const namespacet&,messaget::mstreamt&). All these symbols are then replaced using replace_symbols_in_equations(const union_find_replacet &, std::vector<equal_exprt> &).

Conversion to first order formulas:

Each string primitive is converted to a list of first order formulas by the function substitute_function_applications_in_equations(std::vector<equal_exprt>&,string_constraint_generatort&). These formulas should be unquantified or be either a string_constraintt or a string_not_contains_constraintt. The constraints corresponding to each primitive can be found by following the links in section String primitives.

Since only arrays appear in the string constraints, during the conversion to first order formulas, pointers are associated to arrays. The string_constraint_generatort object keeps track of this association. It can either be set manually using the primitives cprover_associate_array_to_pointer or a fresh array is created.

Refinement loop

We use super_dec_solve and super_get to denote the methods of the underlying solver (bv_refinementt by default). The refinement loop relies on functions string_refinementt::check_axioms which returns true when the set of quantified constraints q is satisfied by the valuation given bysuper_get and string_refinementt::instantiate which gives propositional formulas implied by a string constraint. If the following algorithm returns SAT or UNSAT, the given constraints are SAT or UNSAT respectively:

is_SAT(unquantified_constraints uq, quantified_constraints q)
{
  cur <- uq;
  while(limit--) > 0
  {
    if(super_dec_solve(cur)==SAT)
    {
      if(check_axioms(q, super_get))
      else
        for(axiom in q)
          cur.add(instantiate(axiom));
        return SAT;
    }
    else
      return UNSAT;
  }
  return ERROR;
}

Returns: resultt::D_SATISFIABLE if the constraints are satisfiable, resultt::D_UNSATISFIABLE if they are unsatisfiable, resultt::D_ERROR if the limit of iteration was reached.

Reimplemented from bv_refinementt.

Definition at line 615 of file string_refinement.cpp.

◆ decision_procedure_text()

std::string string_refinementt::decision_procedure_text ( ) const

inlineoverridevirtual

Return a textual description of the decision procedure.

Reimplemented from bv_refinementt.

Definition at line 80 of file string_refinement.h.

◆ get()

exprt string_refinementt::get ( const exprt & expr ) const

overridevirtual

Evaluates the given expression in the valuation found by string_refinementt::dec_solve.

Arrays of characters are interpreted differently from the result of supert::get: values are propagated to the left to fill unknown.

Parameters

expr	an expression

Returns: evaluated expression

Reimplemented from boolbvt.

Definition at line 1829 of file string_refinement.cpp.

◆ set_to()

void string_refinementt::set_to	(	const exprt &	expr,
		bool	value
	)

overridevirtual

Record the constraints to ensure that the expression is true when the boolean is true and false otherwise.

Parameters

expr	an expression of type `bool`
value	the boolean value to set it to

Reimplemented from boolbvt.

Definition at line 283 of file string_refinement.cpp.

Friends And Related Symbol Documentation

◆ instantiate_not_contains()

std::vector< exprt > instantiate_not_contains	(	const string_not_contains_constraintt &	axiom,
		const std::set< std::pair< exprt, exprt > > &	index_pairs,
		const std::unordered_map< string_not_contains_constraintt, symbol_exprt > &	witnesses
	)

Parameters

[in]	axiom	the axiom to instantiate
[in]	index_pairs	pair of indexes for `axiom.s0()`and `axiom.s1()`
[in]	witnesses	`axiom`'s witnesses for non containment

Returns: the lemmas produced through instantiation

Definition at line 203 of file string_constraint_instantiation.cpp.

Member Data Documentation

◆ axioms

string_axiomst string_refinementt::axioms

private

Definition at line 104 of file string_refinement.h.

◆ config_

const configt string_refinementt::config_

private

Definition at line 97 of file string_refinement.h.

◆ current_constraints

std::vector<exprt> string_refinementt::current_constraints

private

Definition at line 107 of file string_refinement.h.

◆ dependencies

string_dependenciest string_refinementt::dependencies

private

Definition at line 117 of file string_refinement.h.

◆ equations

std::vector<exprt> string_refinementt::equations

private

Definition at line 115 of file string_refinement.h.

◆ generator

string_constraint_generatort string_refinementt::generator

private

Definition at line 99 of file string_refinement.h.

◆ index_sets

index_set_pairt string_refinementt::index_sets

private

Definition at line 112 of file string_refinement.h.

◆ loop_bound_

std::size_t string_refinementt::loop_bound_

private

Definition at line 98 of file string_refinement.h.

◆ seen_instances

std::set<exprt> string_refinementt::seen_instances

private

Definition at line 102 of file string_refinement.h.

◆ symbol_resolve

union_find_replacet string_refinementt::symbol_resolve

private

Definition at line 113 of file string_refinement.h.

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

/home/runner/work/cbmc/cbmc/src/solvers/strings/string_refinement.h
/home/runner/work/cbmc/cbmc/src/solvers/strings/string_constraint_instantiation.cpp
/home/runner/work/cbmc/cbmc/src/solvers/strings/string_refinement.cpp

Classes

Public Member Functions

Protected Member Functions

Private Types

Private Member Functions

Private Attributes

Related Symbols

Additional Inherited Members

Detailed Description

Member Typedef Documentation

◆ supert

Constructor & Destructor Documentation

◆ string_refinementt() [1/2]

◆ string_refinementt() [2/2]

Member Function Documentation

◆ add_lemma()

◆ dec_solve()

Symbol resolution

Conversion to first order formulas:

Refinement loop

◆ decision_procedure_text()

◆ get()

◆ set_to()

Friends And Related Symbol Documentation

◆ instantiate_not_contains()

Member Data Documentation

◆ axioms

◆ config_

◆ current_constraints

◆ dependencies

◆ equations

◆ generator

◆ index_sets

◆ loop_bound_

◆ seen_instances

◆ symbol_resolve