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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2020-09-03 07:16:59 -07:00
parent d83d0a83d6
commit aa66be9406
9 changed files with 428 additions and 87 deletions
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62
src/sat/smt/bv_solver.h
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@ -17,6 +17,7 @@ Author:
#pragma once
#include "sat/smt/sat_th.h"
#include "ast/rewriter/bit_blaster/bit_blaster.h"
namespace bv {
@ -85,10 +86,9 @@ namespace bv {
bool is_bit() const override { return false; }
};
euf::solver& ctx;
bv_util m_util;
bv_util bv;
arith_util m_autil;
// bit_blaster m_bb;
bit_blaster m_bb;
th_union_find m_find;
vector<literal_vector> m_bits; // per var, the bits of a given variable.
ptr_vector<expr> m_bits_expr;
@ -96,11 +96,59 @@ namespace bv {
vector<zero_one_bits> m_zero_one_bits; // per var, see comment in the struct zero_one_bit
// bool_var2atom m_bool_var2atom;
sat::solver* m_solver;
svector<sat::eframe> m_stack;
bool m_is_redundant{ false };
sat::solver& s() { return *m_solver; }
// internalize:
sat::literal false_literal;
sat::literal true_literal;
bool visit(expr* e) override;
bool visited(expr* e) override;
bool post_visit(expr* e, bool sign, bool root) override;
unsigned get_bv_size(euf::enode* n);
euf::enode* mk_enode(app* n, ptr_vector<euf::enode> const& args);
void fixed_var_eh(theory_var v);
void register_true_false_bit(theory_var v, unsigned i);
void add_bit(theory_var v, sat::literal lit);
void init_bits(euf::enode * n, expr_ref_vector const & bits);
void internalize_num(app * n, theory_var v);
void internalize_add(app * n);
void internalize_sub(app * n);
void internalize_mul(app * n);
void internalize_udiv(app * n);
void internalize_sdiv(app * n);
void internalize_urem(app * n);
void internalize_srem(app * n);
void internalize_smod(app * n);
void internalize_shl(app * n);
void internalize_lshr(app * n);
void internalize_ashr(app * n);
void internalize_ext_rotate_left(app * n);
void internalize_ext_rotate_right(app * n);
void internalize_and(app * n);
void internalize_or(app * n);
void internalize_not(app * n);
void internalize_nand(app * n);
void internalize_nor(app * n);
void internalize_xor(app * n);
void internalize_xnor(app * n);
void internalize_concat(app * n);
void internalize_sign_extend(app * n);
void internalize_zero_extend(app * n);
void internalize_extract(app * n);
void internalize_redand(app * n);
void internalize_redor(app * n);
void internalize_comp(app * n);
void internalize_rotate_left(app * n);
void internalize_rotate_right(app * n);
void internalize_bv2int(app* n);
void internalize_int2bv(app* n);
void internalize_mkbv(app* n);
void internalize_umul_no_overflow(app *n);
void internalize_smul_no_overflow(app *n);
void internalize_smul_no_underflow(app *n);
void find_wpos(theory_var v);
bool visit(expr* e);
bool visited(expr* e);
public:
solver(euf::solver& ctx);
~solver() override {}