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try a basic heuristic that finds some string that belongs to re.

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Nikolaj Bjorner 2024-12-25 10:10:59 -08:00
parent 09825edcd8
commit f4ed432244
2 changed files with 79 additions and 7 deletions
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4
src/ast/sls/sls_seq_plugin.h
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@ -19,6 +19,7 @@ Author:
#include "ast/sls/sls_context.h"
#include "ast/seq_decl_plugin.h"
#include "ast/arith_decl_plugin.h"
#include "ast/rewriter/seq_rewriter.h"
namespace sls {
@ -43,6 +44,7 @@ namespace sls {
seq_util seq;
arith_util a;
seq_rewriter rw;
scoped_ptr_vector<eval> m_values;
indexed_uint_set m_chars;
bool m_initialized = false;
@ -133,6 +135,8 @@ namespace sls {
void next_char(expr* r, unsigned_vector& chars);
bool is_in_re(zstring const& s, expr* r);
bool some_string_in_re(expr* r, zstring& s);
bool append_char(expr* r0, expr_ref& r, zstring& s);
// access evaluation
bool is_seq_predicate(expr* e);