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Updated regex derivative engine (#5567)

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* updated derivative engine

* some edit

* further improvements in derivative code

* more deriv code edits and re::to_str update

* optimized mk_deriv_accept

* fixed PR comments

* small syntax fix

* updated some simplifications

* bugfix:forgot to_re before reverse

* fixed PR comments

* more PR comment fixes

* more PR comment fixes

* forgot to delete

* deleting unused definition

* fixes

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* fixes

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

Co-authored-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Margus Veanes 2021-10-08 13:04:49 -07:00 • committed by GitHub
parent c0c3e685e7
commit 146f4621c5
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7 changed files with 893 additions and 280 deletions
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2
src/ast/rewriter/seq_axioms.cpp
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@ -850,7 +850,7 @@ namespace seq {
add_clause(~eq, ge10k);
for (unsigned i = 0; i < k; ++i) {
expr* ch = seq.str.mk_nth_i(ubvs, i);
expr* ch = seq.str.mk_nth_c(ubvs, i);
is_digit = seq.mk_char_is_digit(ch);
add_clause(~ge_len, is_digit);
}