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move flatten functionality to asserted_formulas, sort variables in lut_finder

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2020-02-06 09:16:23 -08:00
parent 38d690650b
commit 8b23a1701a
9 changed files with 88 additions and 57 deletions
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35
src/smt/smt_context.cpp
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@ -1989,22 +1989,37 @@ namespace smt {
}
/**
\brief Update the index used for backward subsumption.
\brief Remove clause
*/
void context::remove_lit_occs(clause const& cls) {
int nbv = get_num_bool_vars();
for (literal l : cls) {
if (l.var() < nbv)
dec_ref(l);
}
}
void context::remove_cls_occs(clause * cls) {
remove_watch_literal(cls, 0);
remove_watch_literal(cls, 1);
remove_lit_occs(*cls);
remove_lit_occs(*cls, get_num_bool_vars());
}
/**
\brief Update occurrence count of literals
*/
void context::add_lit_occs(clause const& cls) {
for (literal l : cls) {
inc_ref(l);
}
}
void context::remove_lit_occs(clause const& cls, unsigned nbv) {
for (literal l : cls) {
if (l.var() < static_cast<int>(nbv))
dec_ref(l);
}
}
// TBD: enable as assertion when ready to re-check
void context::dec_ref(literal l) { if (m_lit_occs[l.index()] > 0) m_lit_occs[l.index()]--; }
void context::inc_ref(literal l) { m_lit_occs[l.index()]++; }
/**
\brief Delete the given clause.
@ -2257,7 +2272,7 @@ namespace smt {
unsigned num = cls->get_num_literals();
remove_lit_occs(*cls);
remove_lit_occs(*cls, num_bool_vars);
unsigned ilvl = 0;
(void)ilvl;