goto_programt::targett add_inv_prog(invariant_programt &prog,
goto_programt::targett pos, const size_t max_solution_size,
const goto_programt::targett &decl)
{
symbol_tablet &st=prog.st;
goto_functionst &gf=prog.gf;
const std::string base_name(get_prog_var_name(st, decl));
const typet size_type(unsigned_int_type());
const constant_exprt size(from_integer(max_solution_size, size_type));
const symbol_typet instr_type(CEGIS_INSTRUCTION_TYPE_NAME);
const array_typet prog_type(instr_type, size);
pos=declare_cegis_meta_variable(st, gf, pos, base_name, prog_type);
execute_inv_prog(st, gf, max_solution_size, decl);
return pos;
}
void safety_learn_configt::process(const counterexamplest &ces,
const size_t max_sz)
{
program=original_program;
var_ids.clear();
const symbol_tablet &st=program.st;
num_consts=get_invariant_variable_ids(st, var_ids);
const size_t num_vars=var_ids.size();
null_message_handlert msg;
const std::string name(DANGER_EXECUTE);
add_invariant_library(program, msg, num_vars, num_consts, max_sz, name);
add_safety_learning_variable_refs(program, var_ids, max_sz);
goto_functionst &gf=program.gf;
link_result_var(st, gf, var_ids.size(), max_sz, program.Ix0);
add_invariant_progs_to_learn(program, max_sz);
const invariant_programt &prog=program;
const invariant_programt::const_invariant_loopst loops(prog.get_loops());
const invariant_programt::invariant_loopt &first_loop=*loops.front();
const std::string I0=get_prog_var_name(st, first_loop.meta_variables.Ix);
execute_inv_prog(st, gf, max_sz, program.Ix0, I0);
safety_add_learned_counterexamples(program, ces, create_safety_constraint);
gf.update();
}
void execute_inv_prog(const symbol_tablet &st, goto_functionst &gf,
const size_t max_solution_size, const goto_programt::targett &decl)
{
execute_inv_prog(st, gf, max_solution_size, decl,
get_prog_var_name(st, decl));
}