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Polysat: check test results, forbidden intervals for coefficient -1 (#5241)

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* Use scoped_ptr for condition

* Check solver result in unit tests

* Add test for unusual cjust

* Add solver::get_value

* Broken assertion

* Support forbidden interval for coefficient -1
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Jakob Rath 2021-05-04 18:33:55 +02:00 • committed by GitHub
parent 5791b41133
commit fd1758ffab
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8 changed files with 164 additions and 58 deletions
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src/math/polysat/constraint.h
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@ -68,8 +68,13 @@ namespace polysat {
bool is_negative() const { return m_status == l_false; }
bool is_undef() const { return m_status == l_undef; }
/** Precondition: all variables other than v are assigned. */
virtual bool forbidden_interval(solver& s, pvar v, eval_interval& i, constraint*& neg_condition) { return false; }
/** 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.
*/
virtual bool forbidden_interval(solver& s, pvar v, eval_interval& out_interval, scoped_ptr<constraint>& out_neg_cond) { return false; }
};
inline std::ostream& operator<<(std::ostream& out, constraint const& c) { return c.display(out); }