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add sat-smt-preprocess module

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self-contained pre-processing initialization
This commit is contained in:
Nikolaj Bjorner 2022-11-28 12:13:00 +07:00
parent 85f9c7eefa
commit 500626e814
5 changed files with 104 additions and 7 deletions
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1
src/sat/sat_solver/CMakeLists.txt
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@ -1,6 +1,7 @@
z3_add_component(sat_solver
SOURCES
inc_sat_solver.cpp
sat_smt_preprocess.cpp
COMPONENT_DEPENDENCIES
aig_tactic
arith_tactics

69
src/sat/sat_solver/sat_smt_preprocess.cpp Normal file
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/*++
Copyright (c) 2022 Microsoft Corporation
Module Name:
sat_smt_preprocess.cpp
Abstract:
SAT pre-process
Author:
Nikolaj Bjorner (nbjorner) 2022-11-28
--*/
#include "sat/sat_params.hpp"
#include "sat/sat_solver/sat_smt_preprocess.h"
#include "ast/simplifiers/bit_blaster.h"
#include "ast/simplifiers/max_bv_sharing.h"
#include "ast/simplifiers/card2bv.h"
#include "ast/simplifiers/propagate_values.h"
#include "ast/simplifiers/rewriter_simplifier.h"
#include "ast/simplifiers/solve_eqs.h"
#include "ast/simplifiers/eliminate_predicates.h"
void init_preprocess(ast_manager& m, params_ref const& p, seq_simplifier& s, dependent_expr_state& st) {
params_ref simp1_p = p;
simp1_p.set_bool("som", true);
simp1_p.set_bool("pull_cheap_ite", true);
simp1_p.set_bool("push_ite_bv", false);
simp1_p.set_bool("local_ctx", true);
simp1_p.set_uint("local_ctx_limit", 10000000);
simp1_p.set_bool("flat", true); // required by som
simp1_p.set_bool("hoist_mul", false); // required by som
simp1_p.set_bool("elim_and", true);
simp1_p.set_bool("blast_distinct", true);
simp1_p.set_bool("flat_and_or", false);
params_ref simp2_p = p;
simp2_p.set_bool("flat", false);
simp2_p.set_bool("flat_and_or", false);
sat_params sp(p);
if (sp.euf()) {
s.add_simplifier(alloc(rewriter_simplifier, m, p, st));
s.add_simplifier(alloc(propagate_values, m, p, st));
//
// add:
// solve_eqs
// elim_predicates
// elim_uncnstr
// euf_completion?
//
// add: make it externally configurable
//
}
else {
s.add_simplifier(alloc(rewriter_simplifier, m, p, st));
s.add_simplifier(alloc(propagate_values, m, p, st));
s.add_simplifier(alloc(card2bv, m, p, st));
s.add_simplifier(alloc(rewriter_simplifier, m, simp1_p, st));
s.add_simplifier(mk_max_bv_sharing(m, p, st));
s.add_simplifier(alloc(bit_blaster, m, p, st));
s.add_simplifier(alloc(rewriter_simplifier, m, simp2_p, st));
}
}

25
src/sat/sat_solver/sat_smt_preprocess.h Normal file
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/*++
Copyright (c) 2022 Microsoft Corporation
Module Name:
sat_smt_preprocess.h
Abstract:
SAT pre-process initialization
It collects the functionality associated with
initializing pre-processing for the sat-smt solver.
Author:
Nikolaj Bjorner (nbjorner) 2022-11-28
--*/
#pragma once
#include "ast/simplifiers/seq_simplifier.h"
void init_preprocess(ast_manager& m, params_ref const& p, seq_simplifier& s, dependent_expr_state& st);