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first cut of fpa solver

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2020-10-01 07:18:36 -07:00
parent 4cb07a539b
commit 2087c01cac
7 changed files with 601 additions and 31 deletions
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74
src/sat/smt/fpa_solver.h Normal file
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/*++
Copyright (c) 2014 Microsoft Corporation
Module Name:
fpa_solver.h
Abstract:
Floating-Point Theory Plugin
Author:
Christoph (cwinter) 2014-04-23
Revision History:
--*/
#pragma once
#include "sat/smt/euf_solver.h"
#include "ast/fpa/fpa2bv_converter.h"
#include "ast/fpa/fpa2bv_rewriter.h"
namespace fpa {
typedef euf::enode enode;
typedef euf::theory_var theory_var;
class solver : public euf::th_euf_solver {
protected:
th_rewriter m_th_rw;
fpa2bv_converter_wrapped m_converter;
fpa2bv_rewriter m_rw;
fpa_util & m_fpa_util;
bv_util & m_bv_util;
arith_util & m_arith_util;
obj_map<expr, expr*> m_conversions;
obj_hashtable<func_decl> m_is_added_to_model;
bool visit(expr* e) override;
bool visited(expr* e) override;
bool post_visit(expr* e, bool sign, bool root) override;
expr_ref convert(expr* e);
sat::literal_vector mk_side_conditions();
void attach_new_th_var(enode* n);
void activate(expr* e);
void ensure_equality_relation(theory_var x, theory_var y);
expr* bv2rm_value(expr* b);
expr* bvs2fpa_value(sort* s, expr* a, expr* b, expr* c);
public:
solver(euf::solver& ctx);
~solver() override;
void asserted(sat::literal l) override;
void new_eq_eh(euf::th_eq const& eq) override;
bool use_diseqs() const override { return true; }
void new_diseq_eh(euf::th_eq const& eq) override;
sat::literal internalize(expr* e, bool sign, bool root, bool learned) override;
void internalize(expr* e, bool redundant) override;
void apply_sort_cnstr(euf::enode* n, sort* s) override;
std::ostream& display(std::ostream& out) const override;
void add_value(euf::enode* n, model& mdl, expr_ref_vector& values) override;
void add_dep(euf::enode* n, top_sort<euf::enode>& dep) override;
};
}