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add has_value utility to retrieve value from solver state

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2018-07-01 17:03:58 -07:00
parent 593a6e5139
commit b6054b8406
3 changed files with 25 additions and 2 deletions
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7
src/smt/theory_lra.cpp
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@ -2606,8 +2606,11 @@ public:
bool get_value(enode* n, expr_ref& r) {
theory_var v = n->get_th_var(get_id());
if (can_get_value(v)) {
r = a.mk_numeral(get_value(v), is_int(n));
if (!can_get_bound(v)) return false;
lp::var_index vi = m_theory_var2var_index[v];
rational val;
if (m_solver->has_value(vi, val)) {
r = a.mk_numeral(val, is_int(n));
return true;
}
else {