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Use subsolvers bounds rather than computing them inside nseq

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This commit is contained in:
CEisenhofer 2026-03-25 18:53:13 +01:00
parent af4677950b
commit 813a06fa38
5 changed files with 169 additions and 169 deletions
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12
src/smt/seq/seq_parikh.cpp
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@ -267,8 +267,16 @@ namespace seq {
// stride > 1 guaranteed from here onward.
SASSERT(stride > 1);
unsigned lb = node.var_lb(mem.m_str);
unsigned ub = node.var_ub(mem.m_str);
rational lb_r, ub_r;
if (!node.lower_bound(mem.m_str->get_expr(), lb_r) || !node.upper_bound(mem.m_str->get_expr(), ub_r))
continue;
SASSERT(lb_r <= ub_r);
if (ub_r > INT_MAX)
continue;
const unsigned lb = (unsigned)lb_r.get_int32();
const unsigned ub = (unsigned)ub_r.get_int32();
// Check: ∃k ≥ 0 such that lb ≤ min_len + stride * k ≤ ub ?
//