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separate fixed from bits to allow updates that break tabu

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- range and fixed restrictions on terms are based on constraints and can be violated temporarily.
- bv_eval currently does not allow updating over fixed bits which leads to non-termination. TODO
- lookahead only considers tabu when setting values of variables.
This commit is contained in:
Nikolaj Bjorner 2024-12-30 17:47:18 -08:00
parent 983763213b
commit 3433b14dfa
10 changed files with 224 additions and 193 deletions
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src/ast/sls/sls_bv_lookahead.h
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@ -84,7 +84,7 @@ namespace sls {
bv_valuation& wval(expr* e) const;
void insert_update_stack(expr* e);
bool insert_update(expr* e);
void insert_update(expr* e);
void restore_lookahead();
bool_info& get_bool_info(expr* e);