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  unwindset(goto_model),
32  symex(
33  ui_message_handler,
34  goto_model.get_symbol_table(),
35  equation,
36  options,
37  path_storage,
38  guard_manager,
39  unwindset)
40 {
42 }
43 
45 operator()(propertiest &properties)
46 {
48 
50  options.get_option("symex-coverage-report"),
51  goto_model,
52  symex,
54 
55  if(options.get_bool_option("show-vcc"))
56  {
58  }
59 
60  if(options.get_bool_option("program-only"))
61  {
63  }
64 
65  if(options.get_bool_option("show-byte-ops"))
66  {
68  }
69 
70  resultt result(resultt::progresst::DONE);
71  update_properties(properties, result.updated_properties);
72  return result;
73 }
74 
76 {
77  const auto symex_start = std::chrono::steady_clock::now();
78 
81 
82  const auto symex_stop = std::chrono::steady_clock::now();
83  std::chrono::duration<double> symex_runtime =
84  std::chrono::duration<double>(symex_stop - symex_start);
85  log.status() << "Runtime Symex: " << symex_runtime.count() << "s"
86  << messaget::eom;
87 
89 }
90 
92  propertiest &properties,
93  std::unordered_set<irep_idt> &updated_properties)
94 {
95  if(options.get_bool_option("symex-driven-lazy-loading"))
97 
99  properties, updated_properties, equation);
100  // Since we will not symex any further we can decide the status
101  // of all properties that do not occur in the equation now.
102  // The current behavior is PASS.
103  update_status_of_not_checked_properties(properties, updated_properties);
104 }
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:307
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:239
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:275
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:323
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::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:167
Output of the verification conditions (VCCs)
std::unordered_set< irep_idt > updated_properties
Changed properties since the last call to incremental_goto_checkert::operator()