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fix #2749

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2019-11-29 09:46:41 -08:00
parent bf28b815fa
commit 001ddef058
3 changed files with 23 additions and 24 deletions
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42
src/ast/macros/macro_util.cpp
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@ -175,15 +175,14 @@ bool macro_util::is_macro_head(expr * n, unsigned num_decls) const {
*/
bool macro_util::is_left_simple_macro(expr * n, unsigned num_decls, app_ref & head, expr_ref & def) const {
if (m_manager.is_eq(n)) {
expr * lhs = to_app(n)->get_arg(0);
expr * rhs = to_app(n)->get_arg(1);
if (is_macro_head(lhs, num_decls) && !is_forbidden(to_app(lhs)->get_decl()) &&
!occurs(to_app(lhs)->get_decl(), rhs)) {
head = to_app(lhs);
def = rhs;
return true;
}
expr * lhs = nullptr, * rhs = nullptr;
if (m_manager.is_eq(n, lhs, rhs) &&
is_macro_head(lhs, num_decls) &&
!is_forbidden(to_app(lhs)->get_decl()) &&
!occurs(to_app(lhs)->get_decl(), rhs)) {
head = to_app(lhs);
def = rhs;
return true;
}
return false;
}
@ -207,15 +206,14 @@ bool macro_util::is_left_simple_macro(expr * n, unsigned num_decls, app_ref & he
*/
bool macro_util::is_right_simple_macro(expr * n, unsigned num_decls, app_ref & head, expr_ref & def) const {
if (m_manager.is_eq(n)) {
expr * lhs = to_app(n)->get_arg(0);
expr * rhs = to_app(n)->get_arg(1);
if (is_macro_head(rhs, num_decls) && !is_forbidden(to_app(rhs)->get_decl()) &&
!occurs(to_app(rhs)->get_decl(), lhs)) {
head = to_app(rhs);
def = lhs;
return true;
}
expr * lhs = nullptr, * rhs = nullptr;
if (m_manager.is_eq(n, lhs, rhs) &&
is_macro_head(rhs, num_decls) &&
!is_forbidden(to_app(rhs)->get_decl()) &&
!occurs(to_app(rhs)->get_decl(), lhs)) {
head = to_app(rhs);
def = lhs;
return true;
}
return false;
}
@ -304,10 +302,9 @@ bool macro_util::is_arith_macro(expr * n, unsigned num_decls, app_ref & head, ex
\brief Auxiliary function for is_pseudo_predicate_macro. It detects the pattern (= (f X) t)
*/
bool macro_util::is_pseudo_head(expr * n, unsigned num_decls, app_ref & head, app_ref & t) {
if (!m_manager.is_eq(n))
expr* lhs = nullptr, *rhs = nullptr;
if (!m_manager.is_eq(n, lhs, rhs))
return false;
expr * lhs = to_app(n)->get_arg(0);
expr * rhs = to_app(n)->get_arg(1);
if (!is_ground(lhs) && !is_ground(rhs))
return false;
sort * s = m_manager.get_sort(lhs);
@ -675,6 +672,7 @@ void macro_util::insert_macro(app * head, unsigned num_decls, expr * def, expr *
void macro_util::insert_quasi_macro(app * head, unsigned num_decls, expr * def, expr * cond, bool ineq, bool satisfy_atom,
bool hint, macro_candidates & r) {
TRACE("macro_util", tout << expr_ref(head, m_manager) << "\n";);
if (!is_macro_head(head, head->get_num_args())) {
app_ref new_head(m_manager);
expr_ref extra_cond(m_manager);
@ -874,7 +872,7 @@ void macro_util::collect_macro_candidates_core(expr * atom, unsigned num_decls,
TRACE("macro_util", tout << "Candidate check for: " << mk_ismt2_pp(atom, m_manager) << std::endl;);
if (m_manager.is_eq(atom, lhs, rhs) || m_manager.is_iff(atom, lhs, rhs)) {
if (m_manager.is_eq(atom, lhs, rhs)) {
if (is_quasi_macro_head(lhs, num_decls) &&
!is_forbidden(to_app(lhs)->get_decl()) &&
!occurs(to_app(lhs)->get_decl(), rhs) &&