cprover
multi_path_symex_checker.cpp
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1 /*******************************************************************\
2 
3 Module: Goto Checker using Bounded Model Checking
4 
5 Author: Daniel Kroening, Peter Schrammel
6 
7 \*******************************************************************/
8 
11 
13 
14 #include <chrono>
15 
17 
18 #include "bmc_util.h"
21 
23  const optionst &options,
24  ui_message_handlert &ui_message_handler,
25  abstract_goto_modelt &goto_model)
26  : multi_path_symex_only_checkert(options, ui_message_handler, goto_model),
27  equation_generated(false),
28  property_decider(options, ui_message_handler, equation, ns)
29 {
30 }
31 
33 operator()(propertiest &properties)
34 {
35  resultt result(resultt::progresst::DONE);
36 
37  // When the equation has been generated, we know all the properties.
38  // Have we got anything to check? Otherwise we return DONE.
40  return result;
41 
42  std::chrono::duration<double> solver_runtime(0);
43 
44  // we haven't got an equation yet
46  {
48 
50  options.get_option("symex-coverage-report"),
51  goto_model,
52  symex,
54 
55  update_properties(properties, result.updated_properties);
56 
57  // Have we got anything to check? Otherwise we return DONE.
58  if(!has_properties_to_check(properties))
59  return result;
60 
61  solver_runtime += prepare_property_decider(properties);
62 
63  equation_generated = true;
64  }
65 
66  run_property_decider(result, properties, solver_runtime);
67 
68  return result;
69 }
70 
71 std::chrono::duration<double>
73 {
74  std::chrono::duration<double> solver_runtime = ::prepare_property_decider(
76 
77  return solver_runtime;
78 }
79 
82  propertiest &properties,
83  std::chrono::duration<double> solver_runtime)
84 {
86  result, properties, property_decider, ui_message_handler, solver_runtime);
87 }
88 
90 {
91  goto_tracet goto_trace;
93  equation,
94  equation.SSA_steps.end(),
96  ns,
97  goto_trace);
98 
99  return goto_trace;
100 }
101 
103 {
104  if(options.get_bool_option("beautify"))
105  {
106  // NOLINTNEXTLINE(whitespace/braces)
109  equation);
110  }
111 
112  goto_tracet goto_trace;
115 
116  return goto_trace;
117 }
118 
121 {
122  goto_tracet goto_trace;
124  equation,
127  ns,
128  goto_trace);
129 
130  return goto_trace;
131 }
132 
134 {
135  return ns;
136 }
137 
139 {
141 }
142 
144  const goto_tracet &error_trace)
145 {
146  output_graphml(error_trace, ns, options);
147 }
148 
151 {
152  goto_symex_fault_localizert fault_localizer(
153  options,
155  equation,
157 
158  return fault_localizer(property_id);
159 }
160 
162 {
163  if(options.is_set("write-solver-stats-to"))
164  {
167  [](solver_hardnesst &hardness) { hardness.produce_report(); });
168  }
169 }
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:305
ssa_step_predicatet ssa_step_matches_failing_property(const irep_idt &property_id)
Returns a function that checks whether an SSA step is an assertion with property_id.
Definition: bmc_util.cpp:55
void output_graphml(const goto_tracet &goto_trace, const namespacet &ns, const optionst &options)
outputs an error witness in graphml format
Definition: bmc_util.cpp:107
Bounded Model Checking Utilities.
void build_goto_trace(const symex_target_equationt &target, ssa_step_predicatet is_last_step_to_keep, const decision_proceduret &decision_procedure, const namespacet &ns, goto_tracet &goto_trace)
Build a trace by going through the steps of target and stopping after the step matching a given condi...
Abstract interface to eager or lazy GOTO models.
Definition: boolbv.h:41
dstringt has one field, an unsigned integer no which is an index into a static table of strings.
Definition: dstring.h:37
decision_proceduret & get_decision_procedure() const
Returns the solver instance.
stack_decision_proceduret & get_stack_decision_procedure() const
Returns the solver instance.
Trace of a GOTO program.
Definition: goto_trace.h:177
ui_message_handlert & ui_message_handler
void report() override
Additional reporting that may result from the underlying solver, no-op by default.
resultt operator()(propertiest &) override
Check whether the given properties with status NOT_CHECKED, UNKNOWN or properties newly discovered by...
goto_tracet build_full_trace() const override
Builds and returns the complete trace.
virtual void run_property_decider(incremental_goto_checkert::resultt &result, propertiest &properties, std::chrono::duration< double > solver_runtime)
Run the property decider, which calls the SAT solver, and set the status of checked properties accord...
fault_location_infot localize_fault(const irep_idt &property_id) const override
Returns the most likely fault locations for the given FAILed property_id.
goto_symex_property_decidert property_decider
virtual std::chrono::duration< double > prepare_property_decider(propertiest &properties)
Prepare the property decider for solving.
multi_path_symex_checkert(const optionst &options, ui_message_handlert &ui_message_handler, abstract_goto_modelt &goto_model)
void output_error_witness(const goto_tracet &) override
goto_tracet build_shortest_trace() const override
Builds and returns the trace up to the first failed property.
const namespacet & get_namespace() const override
Returns the namespace associated with the traces.
goto_tracet build_trace(const irep_idt &) const override
Builds and returns the trace for the FAILed property with the given property_id.
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.
A namespacet is essentially one or two symbol tables bound together, to allow for symbol lookups in t...
Definition: namespace.h:92
bool is_set(const std::string &option) const
N.B. opts.is_set("foo") does not imply opts.get_bool_option("foo")
Definition: options.cpp:62
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
Counterexample Beautification.
Fault Localization for Goto Symex.
Capability to collect the statistics of the complexity of individual solver queries.
void with_solver_hardness(T &maybe_hardness_collector, hardness_collectort::handlert handler)
Goto Checker using Multi-Path Symbolic Execution.
bool has_properties_to_check(const propertiest &properties)
Return true if there as a property with NOT_CHECKED or UNKNOWN status.
Definition: properties.cpp:174
std::unordered_map< irep_idt, property_infot > propertiest
A map of property IDs to property infos.
Definition: properties.h:75
std::unordered_set< irep_idt > updated_properties
Changed properties since the last call to incremental_goto_checkert::operator()
A structure that facilitates collecting the complexity statistics from a decision procedure.