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smul no overflow

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2022-02-16 18:55:07 +02:00
parent 89d6f1c191
commit 8c9835bca6
24 changed files with 376 additions and 63 deletions
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src/math/polysat/boolean.h
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@ -32,6 +32,7 @@ namespace polysat {
svector<lbool> m_value; // current value (indexed by literal)
unsigned_vector m_level; // level of assignment (indexed by variable)
dependency_vector m_deps; // dependencies of external asserts
bool_vector m_tracked; // is the variable tracked
unsigned_vector m_activity; //
svector<kind_t> m_kind; // decision or propagation?
// Clause associated with the assignment (indexed by variable):
@ -80,7 +81,7 @@ namespace polysat {
unsigned_vector& activity() { return m_activity; }
bool can_decide() const { return !m_free_vars.empty(); }
sat::bool_var next_var() { return m_free_vars.next_var(); }
void track_var(sat::literal lit) { m_free_vars.mk_var_eh(lit.var()); }
void track_var(sat::literal lit) { m_tracked.setx(lit.var(), true, false); m_free_vars.mk_var_eh(lit.var()); }
// TODO connect activity updates with solver
void inc_activity(sat::literal lit) { m_activity[lit.var()]++; }