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z3str3: mk_value searches equivalence class of terms for candidate model variables

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This commit is contained in:
Murphy Berzish 2020-02-04 13:11:48 -05:00 • committed by Nikolaj Bjorner
parent 69cab61de3
commit 4535228fe2
2 changed files with 42 additions and 2 deletions
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15
src/smt/theory_str.cpp
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@ -9621,6 +9621,21 @@ namespace smt {
if (hasEqc) {
return to_app(n_eqc);
} else {
theory_var curr = get_var(n);
if (curr != null_theory_var) {
curr = m_find.find(curr);
theory_var first = curr;
do {
expr* a = get_ast(curr);
zstring val;
if (candidate_model.find(a, val)) {
return to_app(mk_string(val));
}
curr = m_find.next(curr);
}
while (curr != first && curr != null_theory_var);
}
// fail to find
return nullptr;
}
}