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updates based on discussion

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2026-03-20 11:20:29 -07:00
parent a99b93ef1f
commit ae12956545
4 changed files with 88 additions and 70 deletions
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3
src/ast/euf/euf_sgraph.cpp
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@ -107,8 +107,7 @@ namespace euf {
return snode_kind::s_in_re;
// uninterpreted constants of string sort are variables
// NSB review: check is_uninterp instead of is_uninterp_const.
if (is_uninterp_const(e) && m_seq.is_seq(e->get_sort()))
if (m_seq.is_seq(e->get_sort()) && (is_uninterp(e) || m_seq.is_skolem(e)))
return snode_kind::s_var;
return snode_kind::s_other;

2
src/ast/euf/euf_snode.h
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@ -114,7 +114,7 @@ namespace euf {
bool is_empty() const { return m_kind == snode_kind::s_empty; }
bool is_char() const { return m_kind == snode_kind::s_char; }
bool is_var() const { return m_kind == snode_kind::s_var; }
bool is_var() const { return m_kind == snode_kind::s_var || m_kind == snode_kind::s_other; }
bool is_unit() const { return m_kind == snode_kind::s_unit; }
bool is_char_or_unit() const {
return m_kind == snode_kind::s_char || m_kind == snode_kind::s_unit;