static void validate_quant_solutions(app* x, expr* fml, expr_ref_vector& guards) {
return;
// quant_elim option got removed...
// verify:
// fml <=> guard_1 \/ guard_2 \/ ...
ast_manager& m = guards.get_manager();
expr_ref tmp(m), fml2(m);
tmp = m.mk_or(guards.size(), guards.c_ptr());
expr* _x = x;
std::cout << mk_pp(fml, m) << "\n";
expr_abstract(m, 0, 1, &_x, fml, fml2);
std::cout << mk_pp(fml2, m) << "\n";
symbol name(x->get_decl()->get_name());
sort* s = m.get_sort(x);
fml2 = m.mk_exists(1, &s, &name, fml2);
std::cout << mk_pp(fml2, m) << "\n";
tmp = m.mk_not(m.mk_iff(fml2, tmp));
std::cout << mk_pp(tmp, m) << "\n";
front_end_params fp;
smt::kernel solver(m, fp);
solver.assert_expr(tmp);
lbool res = solver.check();
std::cout << "checked\n";
SASSERT(res == l_false);
if (res != l_false) {
std::cout << res << "\n";
fatal_error(0);
}
}
bool sym_mux::is_homogenous(const expr_ref_vector & vect, unsigned idx) const
{
expr * const * begin = vect.c_ptr();
expr * const * end = begin + vect.size();
for (expr * const * it = begin; it != end; it++) {
if (!is_homogenous_formula(*it, idx)) {
return false;
}
}
return true;
}
void sym_mux::conv_formula_vector(const expr_ref_vector & vect, unsigned src_idx, unsigned tgt_idx,
expr_ref_vector & res) const
{
res.reset();
expr * const * begin = vect.c_ptr();
expr * const * end = begin + vect.size();
for (expr * const * it = begin; it != end; it++) {
expr_ref converted(m);
conv_formula(*it, src_idx, tgt_idx, converted);
res.push_back(converted);
}
}
void apply_subst(expr_ref_vector& tgt, expr_ref_vector const& sub) {
ast_manager& m = tgt.get_manager();
var_subst vs(m, false);
expr_ref tmp(m);
for (unsigned i = 0; i < tgt.size(); ++i) {
if (tgt[i].get()) {
vs(tgt[i].get(), sub.size(), sub.c_ptr(), tmp);
tgt[i] = tmp;
}
else {
tgt[i] = sub[i];
}
}
for (unsigned i = tgt.size(); i < sub.size(); ++i) {
tgt.push_back(sub[i]);
}
}
static void test_c(app* x, expr_ref_vector const& c) {
ast_manager& m = c.get_manager();
expr_ref fml(m);
fml = m.mk_and(c.size(), c.c_ptr());
test(x, fml);
}
br_status reduce_app(func_decl * f, unsigned num, expr * const * args, expr_ref & result,
proof_ref & result_pr)
{
if (m.is_not(f) && (m.is_and(args[0]) || m.is_or(args[0]))) {
SASSERT(num == 1);
expr_ref tmp(m);
app* a = to_app(args[0]);
m_app_args.reset();
for (expr* arg : *a) {
m_brwr.mk_not(arg, tmp);
m_app_args.push_back(tmp);
}
if (m.is_and(args[0])) {
result = mk_or(m_app_args);
}
else {
result = mk_and(m_app_args);
}
return BR_REWRITE2;
}
if (!m.is_and(f) && !m.is_or(f)) {
return BR_FAILED;
}
if (num == 0) {
if (m.is_and(f)) {
result = m.mk_true();
}
else {
result = m.mk_false();
}
return BR_DONE;
}
if (num == 1) {
result = args[0];
return BR_DONE;
}
m_app_args.reset();
m_app_args.append(num, args);
std::sort(m_app_args.c_ptr(), m_app_args.c_ptr()+m_app_args.size(), m_expr_cmp);
remove_duplicates(m_app_args);
bool have_rewritten_args = false;
have_rewritten_args = detect_equivalences(m_app_args, m.is_or(f));
if (m_app_args.size()==1) {
result = m_app_args[0].get();
}
else {
if (m.is_and(f)) {
result = m.mk_and(m_app_args.size(), m_app_args.c_ptr());
}
else {
SASSERT(m.is_or(f));
result = m.mk_or(m_app_args.size(), m_app_args.c_ptr());
}
}
if (have_rewritten_args) {
return BR_REWRITE1;
}
return BR_DONE;
}
expr_ref mk_or(expr_ref_vector const& fmls) {
ast_manager& m = fmls.get_manager();
expr_ref result(m);
bool_rewriter(m).mk_or(fmls.size(), fmls.c_ptr(), result);
return result;
}
