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Some more bug fixes

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CEisenhofer 2026-03-18 14:54:12 +01:00
parent ab53889c10
commit b288c2e7dc
6 changed files with 96 additions and 92 deletions
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15
src/smt/seq/seq_regex.h
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@ -72,6 +72,21 @@ namespace seq {
void get_alphabet_representatives(euf::snode* re, euf::snode_vector& reps);
public:
// Convert a regex minterm expression to a char_set.
// Used to transform symbolic boundaries (re.range, re.complement, etc.)
// into exact character sets (char_set).
//
// Supported expressions:
// re.full_char → full set [0, max_char]
// re.range(lo, hi) → char_set [lo, hi] (inclusive on both ends)
// re.complement(r) → complement of minterm_to_char_set(r)
// re.inter(r1, r2) → intersection of both sets
// re.diff(r1, r2) → r1 minus r2 (= r1 ∩ complement(r2))
// re.to_re(unit(c)) → singleton {c}
// re.empty → empty set
// anything else → full set (conservative, sound over-approximation)
char_set minterm_to_char_set(expr* minterm_re);
seq_regex(euf::sgraph& sg) : m_sg(sg) {}
euf::sgraph& sg() { return m_sg; }