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Polysat: first pass at forbidden intervals (not yet fully integrated into solver) (#5227)

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* Add interval class

* Take dependency as const reference

* Compute forbidden intervals for ule-constraints

* Add class for evaluated interval

* We need the evaluated bounds as well

* Don't add constraint to cjust multiple times (hack, to be improved later)

* typo

* More interval helpers

* Add constraint::ult factory function

* Fix forbidden interval condition

* Add solver::has_viable

* Add conflict explanation using forbidden intervals (not yet fully integrated into solver)
This commit is contained in:
Jakob Rath 2021-04-29 19:12:54 +02:00 • committed by GitHub
parent 60972de562
commit f83705bf9f
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14 changed files with 501 additions and 13 deletions
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src/math/dd/dd_pdd.h
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@ -430,6 +430,7 @@ namespace dd {
unsigned max_pow2_divisor() const { return m.max_pow2_divisor(root); }
unsigned_vector const& free_vars() const { return m.free_vars(*this); }
void swap(pdd& other) { std::swap(root, other.root); }
pdd_iterator begin() const;
pdd_iterator end() const;
@ -457,6 +458,8 @@ namespace dd {
inline pdd& operator-=(pdd & p, pdd const& q) { p = p - q; return p; }
inline pdd& operator+=(pdd & p, pdd const& q) { p = p + q; return p; }
inline void swap(pdd& p, pdd& q) { p.swap(q); }
std::ostream& operator<<(std::ostream& out, pdd const& b);
struct pdd_monomial {