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fix #3833

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2020-04-08 04:34:36 -07:00
parent bd59fceaec
commit dde0c9bd0d
7 changed files with 39 additions and 25 deletions
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11
src/qe/qe.cpp
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@ -2077,7 +2077,7 @@ namespace qe {
if (num_vars > 0) {
ptr_vector<sort> sorts;
vector<symbol> names;
ptr_vector<app> free_vars;
app_ref_vector free_vars(m);
for (unsigned i = 0; i < num_vars; ++i) {
contains_app contains_x(m, vars[i]);
if (contains_x(fml)) {
@ -2087,8 +2087,7 @@ namespace qe {
}
}
if (!free_vars.empty()) {
expr_ref tmp(m);
expr_abstract(m, 0, free_vars.size(), (expr*const*)free_vars.c_ptr(), fml, tmp);
expr_ref tmp = expr_abstract(free_vars, fml);
fml = m.mk_exists(free_vars.size(), sorts.c_ptr(), names.c_ptr(), tmp, 1);
}
}
@ -2279,9 +2278,7 @@ namespace qe {
void expr_quant_elim::abstract_expr(unsigned sz, expr* const* bound, expr_ref& fml) {
if (sz > 0) {
expr_ref tmp(m);
expr_abstract(m, 0, sz, bound, fml, tmp);
fml = tmp;
fml = expr_abstract(m, 0, sz, bound, fml);
}
}
@ -2620,7 +2617,7 @@ namespace qe {
}
var_shifter shift(m);
shift(result, vars.size(), result);
expr_abstract(m, 0, vars.size(), (expr*const*)vars.c_ptr(), result, result);
result = expr_abstract(vars, result);
TRACE("qe", tout << "abstracted" << mk_pp(result, m) << "\n";);
ptr_vector<sort> sorts;
svector<symbol> names;