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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/polysat/var_constraint.h
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@ -29,7 +29,7 @@ namespace polysat {
pvar m_var;
bdd m_viable;
public:
var_constraint(unsigned lvl, bool_var bvar, csign_t sign, pvar v, bdd const & b, p_dependency_ref& dep):
var_constraint(unsigned lvl, bool_var bvar, csign_t sign, pvar v, bdd const & b, p_dependency_ref const& dep):
constraint(lvl, bvar, sign, dep, ckind_t::bit_t), m_var(v), m_viable(b) {}
~var_constraint() override {}
std::ostream& display(std::ostream& out) const override;