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add experimental Horn clause to AIG (AAG format) converter.

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Clauses should be over booleans only (or bit-blasted with fixedpoint.bit_blast=true).
We will crash if that's not the case.
Only linear clauses supported for now

Signed-off-by: Nuno Lopes <t-nclaud@microsoft.com>
This commit is contained in:
Nuno Lopes 2013-05-16 09:58:31 -07:00
parent 100e396618
commit 6560fc0a2c
6 changed files with 398 additions and 3 deletions
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66
src/muz_qe/aig_exporter.h Executable file
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/*++
Copyright (c) 2013 Microsoft Corporation
Module Name:
aig_exporter.h
Abstract:
Export AIG files from horn clauses
--*/
#ifndef _AIG_EXPORTER_H_
#define _AIG_EXPORTER_H_
#include "aig.h"
#include "dl_rule_set.h"
#include "rel_context.h"
#include <map>
#include <sstream>
namespace datalog {
class aig_exporter {
public:
aig_exporter(const rule_set& rules, context& ctx, const fact_vector *facts = 0);
void operator()(std::ostream& out);
private:
typedef obj_map<func_decl, unsigned> decl_id_map;
typedef obj_map<const expr, unsigned> aig_expr_id_map;
typedef std::map<std::pair<unsigned,unsigned>, unsigned> and_gates_map;
const rule_set& m_rules;
const fact_vector *m_facts;
ast_manager& m;
rule_manager& m_rm;
aig_manager m_aigm;
decl_id_map m_decl_id_map;
unsigned m_next_decl_id;
aig_expr_id_map m_aig_expr_id_map;
unsigned m_next_aig_expr_id;
and_gates_map m_and_gates_map;
unsigned m_num_and_gates;
expr_ref_vector m_latch_vars, m_latch_varsp;
expr_ref_vector m_ruleid_var_set, m_ruleid_varp_set;
unsigned_vector m_input_vars;
std::stringstream m_buffer;
void assert_pred_id(func_decl *decl, const expr_ref_vector& vars, expr_ref_vector& exprs);
void collect_var_substs(substitution& subst, const app *h,
const expr_ref_vector& vars, expr_ref_vector& eqs);
unsigned expr_to_aig(const expr *e);
unsigned neg(unsigned id) const;
unsigned mk_and(unsigned id1, unsigned id2);
unsigned mk_or(unsigned id1, unsigned id2);
unsigned get_var(const expr *e);
unsigned mk_var(const expr *e);
unsigned mk_input_var(const expr *e = 0);
unsigned mk_expr_id();
};
}
#endif