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Public Member Functions | Protected Types | Protected Attributes | List of all members

cnf_solvert Class Reference

#include <cnf.h>

+ Inheritance diagram for cnf_solvert:

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+ Collaboration diagram for cnf_solvert:

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Public Member Functions

cnf_solvert (message_handlert &message_handler)

virtual size_t no_clauses () const override

- Public Member Functions inherited from cnft

cnft (message_handlert &message_handler)

virtual ~cnft ()

virtual literalt land (literalt a, literalt b) override

virtual literalt lor (literalt a, literalt b) override

virtual literalt land (const bvt &bv) override

Tseitin encoding of conjunction between multiple literals.

virtual literalt lor (const bvt &bv) override

Tseitin encoding of disjunction between multiple literals.

virtual literalt lxor (const bvt &bv) override

Tseitin encoding of XOR between multiple literals.

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 literalt new_variable () override

Generate a new variable and return it as a literal.

bvt new_variables (std::size_t width) override

Generate a vector of new variables.

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.

void gate_or (literalt a, literalt b, literalt o)

Tseitin encoding of disjunction of two literals.

void gate_xor (literalt a, literalt b, literalt o)

Tseitin encoding of XOR of two literals.

void gate_nand (literalt a, literalt b, literalt o)

Tseitin encoding of NAND of two literals.

void gate_nor (literalt a, literalt b, literalt o)

Tseitin encoding of NOR of two literals.

void gate_equal (literalt a, literalt b, literalt o)

Tseitin encoding of equality between two literals.

void gate_implies (literalt a, literalt b, literalt o)

Tseitin encoding of implication between two literals.

- Public Member Functions inherited from propt

propt (message_handlert &message_handler)

virtual ~propt ()

virtual void set_equal (literalt a, literalt b)

asserts a==b in the propositional formula

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 void lcnf (const bvt &bv)=0

virtual bool has_set_to () const

virtual bool cnf_handled_well () const

virtual bool has_assumptions () const

virtual void set_variable_name (literalt, const irep_idt &)

virtual std::string solver_text () const =0

resultt prop_solve ()

resultt prop_solve (const bvt &assumptions)

virtual tvt l_get (literalt a) const =0

virtual void set_assignment (literalt a, bool value)=0

virtual bool is_in_conflict (literalt l) const =0

Returns true if an assumption is in the final conflict.

virtual bool has_is_in_conflict () const

virtual void set_frozen (literalt)

virtual void set_time_limit_seconds (uint32_t)

std::size_t get_number_of_solver_calls () const

Protected Types

enum class statust { INIT , SAT , UNSAT , ERROR }

Protected Attributes

statust status

size_t clause_counter

- Protected Attributes inherited from cnft

size_t _no_variables

- Protected Attributes inherited from propt

bvt lcnf_bv

messaget log

std::size_t number_of_solver_calls = 0

Additional Inherited Members

- Public Types inherited from propt

enum class resultt { P_SATISFIABLE , P_UNSATISFIABLE , P_ERROR }

- Protected Member Functions inherited from cnft

bool process_clause (const bvt &bv, bvt &dest) const

filter 'true' from clause, eliminate duplicates, recognise trivially satisfied clauses

- Protected Member Functions inherited from propt

virtual resultt do_prop_solve (const bvt &assumptions)=0

- Static Protected Member Functions inherited from cnft

static bvt eliminate_duplicates (const bvt &)

eliminate duplicates from given vector of literals

static bool is_all (const bvt &bv, literalt l)

Detailed Description

Definition at line 72 of file cnf.h.

Member Enumeration Documentation

◆ statust

enum class cnf_solvert::statust

strongprotected

Enumerator
INIT
SAT
UNSAT
ERROR

Definition at line 86 of file cnf.h.

Constructor & Destructor Documentation

◆ cnf_solvert()

cnf_solvert::cnf_solvert ( message_handlert & message_handler )

inlineexplicit

Definition at line 75 of file cnf.h.

Member Function Documentation

◆ no_clauses()

virtual size_t cnf_solvert::no_clauses ( ) const

inlineoverridevirtual

Implements cnft.

Definition at line 80 of file cnf.h.

Member Data Documentation

◆ clause_counter

size_t cnf_solvert::clause_counter

protected

Definition at line 88 of file cnf.h.

◆ status

statust cnf_solvert::status

protected

Definition at line 87 of file cnf.h.

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

/home/runner/work/cbmc/cbmc/src/solvers/sat/cnf.h

cnf_solvert
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