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adding trail/levels

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2019-01-29 14:45:51 -08:00
parent e22c657811
commit 8d20310758
21 changed files with 199 additions and 7 deletions
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1
src/sat/sat_solver.h
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@ -300,6 +300,7 @@ namespace sat {
unsigned lvl(bool_var v) const { return m_level[v]; }
unsigned lvl(literal l) const { return m_level[l.var()]; }
unsigned init_trail_size() const { return at_base_lvl() ? m_trail.size() : m_scopes[0].m_trail_lim; }
unsigned trail_size() const { return m_trail.size(); }
literal trail_literal(unsigned i) const { return m_trail[i]; }
literal scope_literal(unsigned n) const { return m_trail[m_scopes[n].m_trail_lim]; }
void assign(literal l, justification j) {