cprover
multi_path_symex_only_checker.cpp
Go to the documentation of this file.
1 /*******************************************************************\
2 
3 Module: Goto Checker using Multi-Path Symbolic Execution Only
4 
5 Author: Daniel Kroening, Peter Schrammel
6 
7 \*******************************************************************/
8 
11 
13 
14 #include <util/ui_message.h>
15 
17 #include <goto-symex/show_vcc.h>
18 
19 #include <chrono>
20 
21 #include "bmc_util.h"
22 
24  const optionst &options,
25  ui_message_handlert &ui_message_handler,
26  abstract_goto_modelt &goto_model)
27  : incremental_goto_checkert(options, ui_message_handler),
28  goto_model(goto_model),
29  ns(goto_model.get_symbol_table(), symex_symbol_table),
30  equation(ui_message_handler),
31  symex(
32  ui_message_handler,
33  goto_model.get_symbol_table(),
34  equation,
35  options,
36  path_storage,
37  guard_manager)
38 {
40 }
41 
43 operator()(propertiest &properties)
44 {
46 
48  options.get_option("symex-coverage-report"),
49  goto_model,
50  symex,
52 
53  if(options.get_bool_option("show-vcc"))
54  {
56  }
57 
58  if(options.get_bool_option("program-only"))
59  {
61  }
62 
63  if(options.get_bool_option("show-byte-ops"))
64  {
66  }
67 
68  resultt result(resultt::progresst::DONE);
69  update_properties(properties, result.updated_properties);
70  return result;
71 }
72 
74 {
75  const auto symex_start = std::chrono::steady_clock::now();
76 
79 
80  const auto symex_stop = std::chrono::steady_clock::now();
81  std::chrono::duration<double> symex_runtime =
82  std::chrono::duration<double>(symex_stop - symex_start);
83  log.status() << "Runtime Symex: " << symex_runtime.count() << "s"
84  << messaget::eom;
85 
87 }
88 
90  propertiest &properties,
91  std::unordered_set<irep_idt> &updated_properties)
92 {
93  if(options.get_bool_option("symex-driven-lazy-loading"))
95 
97  properties, updated_properties, equation);
98  // Since we will not symex any further we can decide the status
99  // of all properties that do not occur in the equation now.
100  // The current behavior is PASS.
101  update_status_of_not_checked_properties(properties, updated_properties);
102 }
void output_coverage_report(const std::string &cov_out, const abstract_goto_modelt &goto_model, const symex_bmct &symex, ui_message_handlert &ui_message_handler)
Output a coverage report as generated by symex_coveraget if cov_out is non-empty.
Definition: bmc_util.cpp:306
void update_properties_status_from_symex_target_equation(propertiest &properties, std::unordered_set< irep_idt > &updated_properties, const symex_target_equationt &equation)
Sets property status to PASS for properties whose conditions are constant true in the equation.
Definition: bmc_util.cpp:238
void update_status_of_not_checked_properties(propertiest &properties, std::unordered_set< irep_idt > &updated_properties)
Sets the property status of NOT_CHECKED properties to PASS.
Definition: bmc_util.cpp:274
void postprocess_equation(symex_bmct &symex, symex_target_equationt &equation, const optionst &options, const namespacet &ns, ui_message_handlert &ui_message_handler)
Post process the equation.
Definition: bmc_util.cpp:322
void setup_symex(symex_bmct &symex, const namespacet &ns, const optionst &options, ui_message_handlert &ui_message_handler)
Definition: bmc_util.cpp:179
Bounded Model Checking Utilities.
Abstract interface to eager or lazy GOTO models.
static get_goto_functiont get_goto_function(abstract_goto_modelt &goto_model)
Return a function to get/load a goto function from the given goto model Create a default delegate to ...
Definition: symex_main.cpp:493
virtual void symex_from_entry_point_of(const get_goto_functiont &get_goto_function, symbol_tablet &new_symbol_table)
Symbolically execute the entire program starting from entry point.
Definition: symex_main.cpp:470
An implementation of incremental_goto_checkert provides functionality for checking a set of propertie...
ui_message_handlert & ui_message_handler
mstreamt & status() const
Definition: message.h:414
static eomt eom
Definition: message.h:297
multi_path_symex_only_checkert(const optionst &options, ui_message_handlert &ui_message_handler, abstract_goto_modelt &goto_model)
resultt operator()(propertiest &) override
Check whether the given properties with status NOT_CHECKED, UNKNOWN or properties newly discovered by...
virtual void update_properties(propertiest &properties, std::unordered_set< irep_idt > &updated_properties)
Updates the properties from the equation and adds their property IDs to updated_properties.
virtual void generate_equation()
Generates the equation by running goto-symex.
bool get_bool_option(const std::string &option) const
Definition: options.cpp:44
const std::string get_option(const std::string &option) const
Definition: options.cpp:67
Goto Checker using Multi-Path Symbolic Execution only (no SAT solving)
void update_properties_from_goto_model(propertiest &properties, const abstract_goto_modelt &goto_model)
Updates properties with the assertions in goto_model.
Definition: properties.cpp:75
std::unordered_map< irep_idt, property_infot > propertiest
A map of property IDs to property infos.
Definition: properties.h:76
void show_program(const namespacet &ns, const symex_target_equationt &equation)
Print the steps of equation on the standard output.
void show_byte_ops(const optionst &options, ui_message_handlert &ui_message_handler, const namespacet &ns, const symex_target_equationt &equation)
Count and display all byte extract and byte update operations from equation on standard output or fil...
Output of the program (SSA) constraints.
void show_vcc(const optionst &options, ui_message_handlert &ui_message_handler, const symex_target_equationt &equation)
Output equations from equation to a file or to the standard output.
Definition: show_vcc.cpp:166
Output of the verification conditions (VCCs)
std::unordered_set< irep_idt > updated_properties
Changed properties since the last call to incremental_goto_checkert::operator()