mirror of
https://github.com/Z3Prover/z3
synced 2025-08-02 09:20:22 +00:00
dd1ca8f6bd
- add sat.smt option to enable the new incremental core (it is not ready for mainstream consumption as cloning and other features are not implemented and it hasn't been tested in any detail yet). - move "name" into attribute on simplifier so it can be reused for diagnostics by the seq-simplifier.
55 lines
1.5 KiB
C++
55 lines
1.5 KiB
C++
/*++
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Copyright (c) 2022 Microsoft Corporation
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Module Name:
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bv_slice.h
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Abstract:
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simplifier for extracting bit-vector ranges
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It rewrites a state using bit-vector slices.
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Slices are extracted from bit-vector equality assertions
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in the style of (but not fully implementing a full slicing)
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Bjorner & Pichora, TACAS 1998 and Brutomesso et al 2008.
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Author:
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Nikolaj Bjorner (nbjorner) 2022-11-2.
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--*/
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#pragma once
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#include "util/uint_set.h"
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#include "ast/bv_decl_plugin.h"
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#include "ast/simplifiers/dependent_expr_state.h"
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#include "ast/rewriter/th_rewriter.h"
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namespace bv {
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class slice : public dependent_expr_simplifier {
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bv_util m_bv;
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th_rewriter m_rewriter;
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obj_map<expr, uint_set> m_boundaries;
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ptr_vector<expr> m_xs, m_ys;
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expr* mk_extract(unsigned hi, unsigned lo, expr* x);
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void process_eqs();
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void process_eq(expr* e);
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void slice_eq();
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void register_slice(unsigned lo, unsigned hi, expr* x);
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void apply_subst();
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void get_concats(expr* x, ptr_vector<expr>& xs);
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public:
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slice(ast_manager& m, dependent_expr_state& fmls) : dependent_expr_simplifier(m, fmls), m_bv(m), m_rewriter(m) {}
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char const* name() const override { return "bv-slice"; }
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void push() override { dependent_expr_simplifier::push(); }
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void pop(unsigned n) override { dependent_expr_simplifier::pop(n); }
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void reduce() override;
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};
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}
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