cprover
qbf_bdd_coret Class Reference

#include <qbf_bdd_core.h>

Inheritance diagram for qbf_bdd_coret:
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Collaboration diagram for qbf_bdd_coret:
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Public Member Functions

 qbf_bdd_coret ()
 
virtual ~qbf_bdd_coret ()
 
virtual literalt new_variable ()
 Generate a new variable and return it as a literal. More...
 
virtual void lcnf (const bvt &bv)
 
virtual literalt lor (literalt a, literalt b)
 
virtual literalt lor (const bvt &bv)
 Tseitin encoding of disjunction between multiple literals. More...
 
virtual const std::string solver_text ()
 
virtual resultt prop_solve ()
 
virtual tvt l_get (literalt a) const
 
virtual bool is_in_core (literalt l) const
 
virtual modeltypet m_get (literalt a) const
 
- Public Member Functions inherited from qbf_bdd_certificatet
 qbf_bdd_certificatet (void)
 
virtual ~qbf_bdd_certificatet (void)
 
virtual const exprt f_get (literalt l)
 
- Public Member Functions inherited from qdimacs_coret
void simplify_extractbits (exprt &expr) const
 
- Public Member Functions inherited from qdimacs_cnft
 qdimacs_cnft ()
 
virtual ~qdimacs_cnft ()
 
virtual void write_qdimacs_cnf (std::ostream &out)
 
virtual void add_quantifier (const quantifiert &quantifier)
 
void add_quantifier (const quantifiert::typet type, const literalt l)
 
void add_existential_quantifier (const literalt l)
 
void add_universal_quantifier (const literalt l)
 
bool is_quantified (const literalt l) const
 
bool find_quantifier (const literalt l, quantifiert &q) const
 
virtual void set_quantifier (const quantifiert::typet type, const literalt l)
 
void copy_to (qdimacs_cnft &cnf) const
 
bool operator== (const qdimacs_cnft &other) const
 
size_t hash () const
 
- Public Member Functions inherited from dimacs_cnft
 dimacs_cnft ()
 
virtual ~dimacs_cnft ()
 
virtual void write_dimacs_cnf (std::ostream &out)
 
- Public Member Functions inherited from cnf_clause_listt
 cnf_clause_listt ()
 
virtual ~cnf_clause_listt ()
 
virtual size_t no_clauses () const
 
clausestget_clauses ()
 
void copy_to (cnft &cnf) const
 
size_t hash () const
 
- Public Member Functions inherited from cnft
 cnft ()
 
virtual ~cnft ()
 
virtual literalt land (literalt a, literalt b) override
 
virtual literalt land (const bvt &bv) override
 Tseitin encoding of conjunction between multiple literals. More...
 
virtual literalt lxor (const bvt &bv) override
 Tseitin encoding of XOR between multiple literals. More...
 
virtual literalt lxor (literalt a, literalt b) override
 
virtual literalt lnand (literalt a, literalt b) override
 
virtual literalt lnor (literalt a, literalt b) override
 
virtual literalt lequal (literalt a, literalt b) override
 
virtual literalt limplies (literalt a, literalt b) override
 
virtual literalt lselect (literalt a, literalt b, literalt c) override
 
virtual size_t no_variables () const override
 
virtual void set_no_variables (size_t no)
 
void gate_and (literalt a, literalt b, literalt o)
 Tseitin encoding of conjunction of two literals. More...
 
void gate_or (literalt a, literalt b, literalt o)
 Tseitin encoding of disjunction of two literals. More...
 
void gate_xor (literalt a, literalt b, literalt o)
 Tseitin encoding of XOR of two literals. More...
 
void gate_nand (literalt a, literalt b, literalt o)
 Tseitin encoding of NAND of two literals. More...
 
void gate_nor (literalt a, literalt b, literalt o)
 Tseitin encoding of NOR of two literals. More...
 
void gate_equal (literalt a, literalt b, literalt o)
 Tseitin encoding of equality between two literals. More...
 
void gate_implies (literalt a, literalt b, literalt o)
 Tseitin encoding of implication between two literals. More...
 
- Public Member Functions inherited from propt
 propt ()
 
virtual ~propt ()
 
virtual void set_equal (literalt a, literalt b)
 asserts a==b in the propositional formula More...
 
virtual void l_set_to (literalt a, bool value)
 
void l_set_to_true (literalt a)
 
void l_set_to_false (literalt a)
 
void lcnf (literalt l0, literalt l1)
 
void lcnf (literalt l0, literalt l1, literalt l2)
 
void lcnf (literalt l0, literalt l1, literalt l2, literalt l3)
 
virtual bool has_set_to () const
 
virtual bool cnf_handled_well () const
 
virtual void set_assumptions (const bvt &_assumptions)
 
virtual bool has_set_assumptions () const
 
virtual void set_variable_name (literalt a, const irep_idt &name)
 
bvt new_variables (std::size_t width)
 generates a bitvector of given width with new variables More...
 
virtual void set_assignment (literalt a, bool value)
 
virtual void copy_assignment_from (const propt &prop)
 
virtual bool is_in_conflict (literalt l) const
 
virtual bool has_is_in_conflict () const
 
virtual void set_frozen (literalt a)
 
virtual void set_time_limit_seconds (uint32_t lim)
 
- Public Member Functions inherited from messaget
virtual void set_message_handler (message_handlert &_message_handler)
 
message_handlertget_message_handler ()
 
 messaget ()
 
 messaget (const messaget &other)
 
messagetoperator= (const messaget &other)
 
 messaget (message_handlert &_message_handler)
 
virtual ~messaget ()
 
mstreamtget_mstream (unsigned message_level) const
 
mstreamterror () const
 
mstreamtwarning () const
 
mstreamtresult () const
 
mstreamtstatus () const
 
mstreamtstatistics () const
 
mstreamtprogress () const
 
mstreamtdebug () const
 
void conditional_output (mstreamt &mstream, const std::function< void(mstreamt &)> &output_generator) const
 Generate output to mstream using output_generator if the configured verbosity is at least as high as that of mstream. More...
 

Protected Member Functions

void compress_certificate (void)
 
- Protected Member Functions inherited from qdimacs_cnft
void write_prefix (std::ostream &out) const
 
- Protected Member Functions inherited from dimacs_cnft
void write_problem_line (std::ostream &out)
 
void write_clauses (std::ostream &out)
 
- Protected Member Functions inherited from cnft
bool process_clause (const bvt &bv, bvt &dest)
 filter 'true' from clause, eliminate duplicates, recognise trivially satisfied clauses More...
 

Private Types

typedef std::vector< BDD * > bdd_variable_mapt
 

Private Attributes

bdd_variable_mapt bdd_variable_map
 
BDD * matrix
 

Additional Inherited Members

- Public Types inherited from qdimacs_coret
enum  modeltypet { M_TRUE, M_FALSE, M_DONTCARE, M_COMPLEX }
 
typedef std::pair< exprt, unsigned > symbol_mapt
 
typedef std::map< unsigned, symbol_maptvariable_mapt
 
- Public Types inherited from qdimacs_cnft
typedef std::vector< quantifiertquantifierst
 
- Public Types inherited from cnf_clause_listt
typedef std::list< bvtclausest
 
- Public Types inherited from propt
enum  resultt { resultt::P_SATISFIABLE, resultt::P_UNSATISFIABLE, resultt::P_ERROR }
 
- Public Types inherited from messaget
enum  message_levelt {
  M_ERROR =1, M_WARNING =2, M_RESULT =4, M_STATUS =6,
  M_STATISTICS =8, M_PROGRESS =9, M_DEBUG =10
}
 
- Static Public Member Functions inherited from cnf_clause_listt
static size_t hash_clause (const bvt &bv)
 
- Static Public Member Functions inherited from cnft
static bvt eliminate_duplicates (const bvt &)
 eliminate duplicates from given vector of literals More...
 
- Static Public Member Functions inherited from messaget
static unsigned eval_verbosity (const std::string &user_input, const message_levelt default_verbosity, message_handlert &dest)
 Parse a (user-)provided string as a verbosity level and set it as the verbosity of dest. More...
 
static mstreamteom (mstreamt &m)
 
static mstreamtendl (mstreamt &m)
 
- Public Attributes inherited from qdimacs_coret
variable_mapt variable_map
 
- Public Attributes inherited from qdimacs_cnft
quantifierst quantifiers
 
- Protected Types inherited from qbf_bdd_certificatet
typedef std::vector< BDD * > model_bddst
 
typedef std::unordered_map< unsigned, exprtfunction_cachet
 
- Static Protected Member Functions inherited from cnft
static bool is_all (const bvt &bv, literalt l)
 
- Protected Attributes inherited from qbf_bdd_certificatet
Cudd * bdd_manager
 
model_bddst model_bdds
 
function_cachet function_cache
 
- Protected Attributes inherited from dimacs_cnft
bool break_lines
 
- Protected Attributes inherited from cnf_clause_listt
clausest clauses
 
- Protected Attributes inherited from cnft
size_t _no_variables
 
- Protected Attributes inherited from propt
bvt lcnf_bv
 
- Protected Attributes inherited from messaget
message_handlertmessage_handler
 
mstreamt mstream
 

Detailed Description

Definition at line 43 of file qbf_bdd_core.h.

Member Typedef Documentation

◆ bdd_variable_mapt

typedef std::vector<BDD*> qbf_bdd_coret::bdd_variable_mapt
private

Definition at line 46 of file qbf_bdd_core.h.

Constructor & Destructor Documentation

◆ qbf_bdd_coret()

qbf_bdd_coret::qbf_bdd_coret ( )

Definition at line 60 of file qbf_bdd_core.cpp.

References qbf_bdd_certificatet::bdd_manager, and matrix.

◆ ~qbf_bdd_coret()

qbf_bdd_coret::~qbf_bdd_coret ( )
virtual

Definition at line 66 of file qbf_bdd_core.cpp.

References bdd_variable_map, and matrix.

Member Function Documentation

◆ compress_certificate()

void qbf_bdd_coret::compress_certificate ( void  )
protected

◆ is_in_core()

bool qbf_bdd_coret::is_in_core ( literalt  l) const
virtual

Implements qdimacs_coret.

Definition at line 153 of file qbf_bdd_core.cpp.

◆ l_get()

tvt qbf_bdd_coret::l_get ( literalt  a) const
virtual

Reimplemented from qbf_bdd_certificatet.

Definition at line 82 of file qbf_bdd_core.cpp.

◆ lcnf()

void qbf_bdd_coret::lcnf ( const bvt bv)
virtual

Reimplemented from cnf_clause_listt.

Definition at line 175 of file qbf_bdd_core.cpp.

References qbf_bdd_certificatet::bdd_manager, bdd_variable_map, matrix, and cnft::process_clause().

◆ lor() [1/2]

literalt qbf_bdd_coret::lor ( literalt  a,
literalt  b 
)
virtual
parameters: Two inputs to the OR gate
Returns
Output signal of the OR gate as literal

Reimplemented from cnft.

Definition at line 197 of file qbf_bdd_core.cpp.

References bdd_variable_map, new_variable(), literalt::sign(), and literalt::var_no().

◆ lor() [2/2]

literalt qbf_bdd_coret::lor ( const bvt bv)
virtual

Tseitin encoding of disjunction between multiple literals.

parameters: Any number of inputs to the OR gate
Returns
Output signal of the OR gate as literal

Reimplemented from cnft.

Definition at line 214 of file qbf_bdd_core.cpp.

References bdd_variable_map, const_literal(), new_variable(), and literalt::var_no().

◆ m_get()

qdimacs_coret::modeltypet qbf_bdd_coret::m_get ( literalt  a) const
virtual

Implements qdimacs_coret.

Definition at line 158 of file qbf_bdd_core.cpp.

◆ new_variable()

literalt qbf_bdd_coret::new_variable ( void  )
virtual

Generate a new variable and return it as a literal.

Returns
New variable as literal

Reimplemented from qbf_bdd_certificatet.

Definition at line 163 of file qbf_bdd_core.cpp.

References qbf_bdd_certificatet::bdd_manager, bdd_variable_map, qbf_bdd_certificatet::new_variable(), and literalt::var_no().

Referenced by lor().

◆ prop_solve()

◆ solver_text()

const std::string qbf_bdd_coret::solver_text ( )
virtual

Reimplemented from qdimacs_cnft.

Definition at line 88 of file qbf_bdd_core.cpp.

Referenced by prop_solve().

Member Data Documentation

◆ bdd_variable_map

bdd_variable_mapt qbf_bdd_coret::bdd_variable_map
private

Definition at line 47 of file qbf_bdd_core.h.

Referenced by compress_certificate(), lcnf(), lor(), new_variable(), prop_solve(), and ~qbf_bdd_coret().

◆ matrix

BDD* qbf_bdd_coret::matrix
private

Definition at line 49 of file qbf_bdd_core.h.

Referenced by lcnf(), prop_solve(), qbf_bdd_coret(), and ~qbf_bdd_coret().


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