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forbidden interval update

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
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Nikolaj Bjorner 2021-09-07 17:00:46 +02:00
parent e6c4ae19c6
commit a6643955e6
7 changed files with 192 additions and 242 deletions
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10
src/math/polysat/constraint.h
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@ -167,14 +167,8 @@ namespace polysat {
void set_unit_clause(clause* cl);
p_dependency* unit_dep() const { return m_unit_clause ? m_unit_clause->dep() : nullptr; }
/** Precondition: all variables other than v are assigned.
*
* \param[out] out_interval The forbidden interval for this constraint
* \param[out] out_neg_cond Negation of the side condition (the side condition is true when the forbidden interval is trivial). May be NULL if the condition is constant.
* \returns True iff a forbidden interval exists and the output parameters were set.
*/
// TODO: we can probably remove this and unify the implementations for both cases by relying on as_inequality().
virtual bool forbidden_interval(solver& s, bool is_positive, pvar v, eval_interval& out_interval, signed_constraint& out_neg_cond) { return false; }
};
inline std::ostream& operator<<(std::ostream& out, constraint const& c) { return c.display(out); }