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add rule unfolding transformation

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2012-10-15 15:34:29 -07:00
parent 2c24f25050
commit d16db63e56
13 changed files with 160 additions and 138 deletions
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15
lib/dl_mk_rule_inliner.h
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@ -40,24 +40,25 @@ namespace datalog {
bool m_ready;
unsigned m_deltas[2];
public:
rule_unifier(rule_manager& rm, context& ctx, ast_manager& m)
: m(m), m_rm(rm), m_context(ctx), m_interp_simplifier(ctx), m_subst(m), m_unif(m), m_ready(false) {}
rule_unifier(context& ctx)
: m(ctx.get_manager()), m_rm(ctx.get_rule_manager()), m_context(ctx),
m_interp_simplifier(ctx), m_subst(m), m_unif(m), m_ready(false) {}
/** Reset subtitution and unify tail tgt_idx of the target rule and the head of the src rule */
bool unify_rules(const rule& tgt, unsigned tgt_idx, const rule& src);
bool unify_rules(rule const& tgt, unsigned tgt_idx, rule const& src);
/**
\brief Apply unifier to rules.
Return false if the resulting rule is a tautology (the interpreted tail is unsat).
*/
bool apply(rule& tgt, unsigned tgt_idx, rule& src, rule_ref& result);
bool apply(rule const& tgt, unsigned tgt_idx, rule const& src, rule_ref& result);
void display(std::ostream& stm) { m_subst.display(stm, 2, m_deltas); }
/**
Retrieve substitutions for src/tgt. (second argument of unify_rules).
*/
expr_ref_vector get_rule_subst(const rule& r, bool is_tgt);
expr_ref_vector get_rule_subst(rule const& r, bool is_tgt);
private:
void apply(app * a, bool is_tgt, app_ref& res);
@ -66,7 +67,7 @@ namespace datalog {
Apply substitution to a rule tail. Tail with skipped_index is skipped,
unless skipped_index is equal to UINT_MAX
*/
void apply(rule& r, bool is_tgt, unsigned skipped_index, app_ref_vector& res,
void apply(rule const& r, bool is_tgt, unsigned skipped_index, app_ref_vector& res,
svector<bool>& res_neg);
};
@ -178,7 +179,7 @@ namespace datalog {
m_simp(m_context.get_rewriter()),
m_pinned(m_rm),
m_inlined_rules(m_context),
m_unifier(ctx.get_rule_manager(), ctx, m),
m_unifier(ctx),
m_mc(0),
m_pc(0),
m_head_index(m),