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fix prefix constraint

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This commit is contained in:
Jakob Rath 2024-05-14 19:33:32 +02:00
parent 1f686126a3
commit a4f14fa29f
1 changed files with 4 additions and 2 deletions
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6
src/sat/smt/polysat/viable.cpp
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@ -974,9 +974,11 @@ v0[19] := 0 v0 [-131062 ; 0[ := [-131062;0[ src ~4 <= 43691*v0;
#endif
// for simplicity, we fix the evaluation of the stored upper bits
// (alternative would be to track sub-ranges of extracted symbolic bounds)
auto sc = cs.fixed(t, ebw - 1, abw, store_val);
unsigned const k = bw - ebw;
auto const sc = cs.fixed(t, ebw - 1 + k, abw + k, store_val);
#if DEBUG_EXPLAIN
verbose_stream() << " t[" << (ebw - 1) << ":" << abw << "] = " << store_val << "\n";
verbose_stream() << " t " << t << "\n";
verbose_stream() << " t[" << (ebw - 1 + k) << ":" << (abw + k) << "] = " << store_val << "\n";
verbose_stream() << " fixed prefix constraint " << sc << "\n";
verbose_stream() << " eval " << sc.eval() << "\n";
verbose_stream() << " weval " << sc.weak_eval(c.get_assignment()) << "\n";