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ubv2s step3

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This commit is contained in:
Nikolaj Bjorner 2021-07-12 17:15:08 +02:00
parent b6a3891ac4
commit f74adb1ebd
4 changed files with 15 additions and 2 deletions
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2
src/ast/rewriter/seq_axioms.cpp
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@ -792,8 +792,6 @@ namespace seq {
es.reverse();
eq = m.mk_eq(seq.str.mk_ubv2s(b), seq.str.mk_concat(es, seq.str.mk_string_sort()));
add_clause(~ge10k, ge10k1, eq);
ubv2ch_axiom(bv_sort);
}
void axioms::ubv2ch_axiom(sort* bv_sort) {

6
src/ast/rewriter/seq_rewriter.cpp
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@ -2209,6 +2209,12 @@ br_status seq_rewriter::mk_str_is_digit(expr* a, expr_ref& result) {
br_status seq_rewriter::mk_str_ubv2s(expr* a, expr_ref& result) {
bv_util bv(m());
rational val;
if (bv.is_numeral(a, val)) {
result = str().mk_string(zstring(val));
return BR_DONE;
}
return BR_FAILED;
}