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add v0 of equality solver

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This commit is contained in:
Nikolaj Bjorner 2024-11-30 17:25:49 -08:00
parent 05e053247d
commit 24c3cd38d1
4 changed files with 113 additions and 3 deletions
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11
src/ast/seq_decl_plugin.cpp
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@ -945,6 +945,17 @@ void seq_util::str::get_concat(expr* e, expr_ref_vector& es) const {
}
}
void seq_util::str::get_concat(expr* e, ptr_vector<expr>& es) const {
expr* e1, * e2;
while (is_concat(e, e1, e2)) {
get_concat(e1, es);
e = e2;
}
if (!is_empty(e)) {
es.push_back(e);
}
}
/*
Returns true if s is an expression of the form (l = |u|) |u|-k or (-k)+|u| or |u|+(-k).
Also returns true and assigns k=0 and l=s if s is |u|.