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fix #5032, reset substitution during fold transformation

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This commit is contained in:
Nikolaj Bjorner 2021-02-15 14:14:25 -08:00
parent 6bd02e122b
commit c387863da1
3 changed files with 10 additions and 2 deletions
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2
src/smt/theory_char.cpp
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@ -258,7 +258,7 @@ namespace smt {
for (unsigned v = get_num_vars(); v-- > 0; ) {
expr* e = get_expr(v);
if (seq.is_char(e) && m_var2value[v] == UINT_MAX && get_char_value(v, c)) {
CTRACE("seq", seq.is_char(e), tout << mk_pp(e, m) << " root: " << get_enode(v)->is_root() << " is_value: " << get_char_value(v, c) << "\n";);
CTRACE("seq_verbose", seq.is_char(e), tout << mk_pp(e, m) << " root: " << get_enode(v)->is_root() << " is_value: " << get_char_value(v, c) << "\n";);
enode* r = get_enode(v)->get_root();
m_value2var.reserve(c + 1, null_theory_var);
theory_var u = m_value2var[c];