klee::BFSSearcher Class Reference

#include <Searcher.h>

Inheritance diagram for klee::BFSSearcher:

Collaboration diagram for klee::BFSSearcher:

Public Member Functions
ExecutionState &	selectState () override
void	update (ExecutionState *current, const std::vector< ExecutionState * > &addedStates, const std::vector< ExecutionState * > &removedStates) override
bool	empty () override
void	printName (llvm::raw_ostream &os) override
	Prints name of searcher as a klee_message(). More...
Public Member Functions inherited from klee::Searcher
virtual	~Searcher ()=default
virtual ExecutionState &	selectState ()=0
virtual void	update (ExecutionState *current, const std::vector< ExecutionState * > &addedStates, const std::vector< ExecutionState * > &removedStates)=0
virtual bool	empty ()=0
virtual void	printName (llvm::raw_ostream &os)=0
	Prints name of searcher as a klee_message(). More...

Private Attributes
std::deque< ExecutionState * >	states

Additional Inherited Members
Public Types inherited from klee::Searcher
enum	CoreSearchType : std::uint8_t {   DFS , BFS , RandomState , RandomPath ,   NURS_CovNew , NURS_MD2U , NURS_Depth , NURS_RP ,   NURS_ICnt , NURS_CPICnt , NURS_QC }

Detailed Description

BFSSearcher implements breadth-first exploration. When KLEE branches multiple times for a single instruction, all new states have the same depth. Keep in mind that the process tree (PTree) is a binary tree and hence the depth of a state in that tree and its branch depth during BFS are different.

Definition at line 96 of file Searcher.h.

Member Function Documentation

empty()

bool BFSSearcher::empty ( )

overridevirtual

Returns

True if no state left for exploration, False otherwise

Implements klee::Searcher.

Definition at line 108 of file Searcher.cpp.

References states.

printName()

void BFSSearcher::printName ( llvm::raw_ostream &  os )

overridevirtual

Prints name of searcher as a klee_message().

Implements klee::Searcher.

Definition at line 112 of file Searcher.cpp.

selectState()

ExecutionState & BFSSearcher::selectState ( )

overridevirtual

Selects a state for further exploration.

Returns

The selected state.

Implements klee::Searcher.

Definition at line 75 of file Searcher.cpp.

References states.

update()

void BFSSearcher::update ( ExecutionState *  current, const std::vector< ExecutionState * > &  addedStates, const std::vector< ExecutionState * > &  removedStates  )

overridevirtual

Notifies searcher about new or deleted states.

Parameters

current	The currently selected state for exploration.
addedStates	The newly branched states with current as common ancestor.
removedStates	The states that will be terminated.

Implements klee::Searcher.

Definition at line 79 of file Searcher.cpp.

References states.

Member Data Documentation

states

std::deque<ExecutionState*> klee::BFSSearcher::states

private

Definition at line 97 of file Searcher.h.

Referenced by empty(), selectState(), and update().

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

• /Users/cristic/klee/lib/Core/Searcher.h
• /Users/cristic/klee/lib/Core/Searcher.cpp