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fix unsoundness in explanation handling for nested datatypes and sequences

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This commit is contained in:
Nikolaj Bjorner 2022-07-03 16:57:49 -07:00
parent e6e0c74324
commit 1e8f9078e3
4 changed files with 54 additions and 30 deletions
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1
src/ast/seq_decl_plugin.h
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@ -375,6 +375,7 @@ public:
bool is_to_code(expr const* n) const { return is_app_of(n, m_fid, OP_STRING_TO_CODE); }
bool is_len_sub(expr const* n, expr*& l, expr*& u, rational& k) const;
bool is_concat_of_units(expr* n) const;
/*
tests if s is a single character string(c) or a unit (c)