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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
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Nikolaj Bjorner 2021-07-18 12:32:27 +02:00
parent e0cb24867f
commit ce1c8ee9e3
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src/ast/rewriter/seq_axioms.cpp
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@ -820,7 +820,7 @@ namespace seq {
/* /*
* len(ubv2s(b)) = k => 10^k-1 <= b < 10^{k} k > 1 * len(ubv2s(b)) = k => 10^k-1 <= b < 10^{k} k > 1
* len(ubv2s(b)) = 1 => b < 10^{1} k = 1 * len(ubv2s(b)) = 1 => b < 10^{1} k = 1
* len(ubv2s(b)) >= k => is_digit(nth(ubv2s(b),0) & ... & is_digit(nth(ubv2s(b),k-1) * len(ubv2s(b)) >= k => is_digit(nth(ubv2s(b), 0)) & ... & is_digit(nth(ubv2s(b), k-1))
*/ */
void axioms::ubv2s_len_axiom(expr* b, unsigned k) { void axioms::ubv2s_len_axiom(expr* b, unsigned k) {
expr_ref ge10k(m), ge10k1(m), eq(m), is_digit(m); expr_ref ge10k(m), ge10k1(m), eq(m), is_digit(m);