예제 #1
0
bool ast::is_taut(z3::solver& solver, const z3::expr& expr) {
	solver.push();
	solver.add(!expr);
	auto res = solver.check();
	solver.pop();
	return res == z3::unsat;
}
예제 #2
0
    void addConstraintsToSolver(z3::solver &solver)
    {
        std::vector<z3::expr*>::iterator it;

        for (it = _inputNodes.begin(); it != _inputNodes.end(); ++it)
            {
                (*it)->simplify();
                solver.add(*(*it));
            }
        for (it = _outputNodes.begin(); it != _outputNodes.end(); ++it)
            {
                (*it)->simplify();
                solver.add(*(*it));
            }
        // FIXME : remove because not a condition
        // for (it = _hiddenNodes.begin(); it != _hiddenNodes.end(); ++it)
        //     solver.add(*(*it));
    }
예제 #3
0
파일: Z3Solver.cpp 프로젝트: AmesianX/chef
void Z3BaseSolverImpl::configureSolver() {
    // TODO: Turn this into some sort of optional logging...
    errs() << "[Z3] Initializing..." << '\n';

    Z3_param_descrs solver_params = Z3_solver_get_param_descrs(context_, solver_);
    Z3_param_descrs_inc_ref(context_, solver_params);

    errs() << "[Z3] Available parameters:" << '\n';
    errs() << "[Z3]  " << Z3_param_descrs_to_string(context_, solver_params) << '\n';

    z3::params params(context_);
    params.set("array.extensional", false);
    Z3_params_validate(context_, params, solver_params);

    solver_.set(params);

    Z3_param_descrs_dec_ref(context_, solver_params);
}
예제 #4
0
파일: Z3Solver.cpp 프로젝트: AmesianX/chef
void Z3BaseSolverImpl::extractModel(const std::vector<const Array*> &objects,
        std::vector<std::vector<unsigned char> > &values) {
    z3::model model = solver_.get_model();

#if 0 // TODO: Turn into proper debug logging
    std::stringstream model_ss;
    model_ss << solver_ << '\n';
    model_ss << model; model_ss.flush();
    errs() << "[Z3][Debug] Model: " << '\n' << model_ss.str() << '\n';
#endif

    values.reserve(objects.size());
    for (std::vector<const Array*>::const_iterator it = objects.begin(),
            ie = objects.end(); it != ie; ++it) {
        const Array *array = *it;
        std::vector<unsigned char> data;

#if 0 // TODO: Turn into proper debug logging
        errs() << "[Z3][Debug] Array name: " << array->name << '\n';
#endif

        data.reserve(array->size);
        for (unsigned offset = 0; offset < array->size; ++offset) {
            z3::expr value_ast = model.eval(
                    builder_->getInitialRead(array, offset), true);
            unsigned value_num;

#if 0 // TODO: Turn into proper debug logging
            std::stringstream ss;
            ss << builder_->getInitialRead(array, offset) << " // " << value_ast; ss.flush();
            errs() << "[Z3][Debug] Initial read eval: " << ss.str() << '\n';
#endif

            Z3_bool conv_result = Z3_get_numeral_uint(context_, value_ast,
                    &value_num);
            assert(conv_result == Z3_TRUE && "Could not convert value");
            assert(value_num < (1 << 8*sizeof(unsigned char))
                    && "Invalid model value");

            data.push_back((unsigned char)value_num);
        }
        values.push_back(data);
    }
}
예제 #5
0
Z3AssertArrayBuilder::Z3AssertArrayBuilder(z3::solver &solver,
        Z3ArrayBuilderCache *cache)
    : Z3ArrayBuilder(solver.ctx(), cache),
      solver_(solver) {

}