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convert m_r_upper and m_r_lower bounds to plain vectors

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manage backtracking state together with backtracking of column data.
This commit is contained in:
Nikolaj Bjorner 2025-04-23 16:33:38 -07:00
parent fae60946bf
commit e41acd7b50
6 changed files with 46 additions and 24 deletions
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10
src/math/lp/lar_solver.h
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@ -73,6 +73,14 @@ class lar_solver : public column_namer {
}
};
struct column_update {
bool is_upper;
unsigned j;
impq bound;
column column;
};
struct column_update_trail;
//////////////////// fields //////////////////////////
trail_stack m_trail;
lp_settings m_settings;
@ -86,6 +94,8 @@ class lar_solver : public column_namer {
bool m_need_register_terms = false;
var_register m_var_register;
svector<column> m_columns;
vector<column_update> m_column_updates;
constraint_set m_constraints;
// the set of column indices j such that bounds have changed for j
indexed_uint_set m_columns_with_changed_bounds;