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add local search functionality to sls_seq_plugin

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2024-11-24 11:24:17 -08:00
parent b4e768cfb0
commit 4559b23caf
4 changed files with 709 additions and 77 deletions
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45
src/ast/sls/sls_seq_plugin.h
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@ -18,6 +18,7 @@ Author:
#include "ast/sls/sls_context.h"
#include "ast/seq_decl_plugin.h"
#include "ast/arith_decl_plugin.h"
namespace sls {
@ -34,32 +35,66 @@ namespace sls {
val0(m), val1(m) {}
value val0;
value val1;
bool is_value = false;
unsigned min_length = 0;
unsigned max_length = UINT_MAX;
};
seq_util seq;
arith_util a;
scoped_ptr_vector<eval> m_values;
indexed_uint_set m_chars;
bool m_initialized = false;
struct str_update {
expr* e;
zstring value;
unsigned m_score;
};
struct int_update {
expr* e;
rational value;
unsigned m_score;
};
vector<str_update> m_str_updates;
bool apply_str_update();
vector<int_update> m_int_updates;
bool apply_update();
bool update(expr* e, zstring const& value);
bool update(expr* e, rational const& value);
bool bval1(expr* e);
bool bval1_seq(app* e);
zstring& strval0(expr* e);
zstring const& strval1(expr* e);
bool repair_contains(expr* e);
bool repair_down_seq(app* e);
bool repair_down_eq(app* e);
bool repair_down_str_eq(app* e);
bool repair_down_str_extract(app* e);
bool repair_down_str_contains(expr* e);
bool repair_down_str_concat(app* e);
bool repair_down_str_length(app* e);
bool repair_down_str_at(app* e);
bool repair_down_str_indexof(app* e);
bool repair_down_str_replace(app* e);
bool repair_down_str_prefixof(app* e);
bool repair_down_str_suffixof(app* e);
void repair_up_str_length(app* e);
void repair_up_str_indexof(app* e);
bool is_seq_predicate(expr* e);
eval& get_eval(expr* e);
eval* get_eval(expr* e) const;
bool is_value(expr* e);
public:
seq_plugin(context& c);
~seq_plugin() override {}
expr_ref get_value(expr* e) override;
void initialize() override {}
void initialize() override;
void start_propagation() override {}
void propagate_literal(sat::literal lit) override;
bool propagate() override;
@ -67,7 +102,7 @@ namespace sls {
void register_term(expr* e) override;
std::ostream& display(std::ostream& out) const override;
bool set_value(expr* e, expr* v) override;
bool include_func_interp(func_decl* f) const override { return true; }
bool include_func_interp(func_decl* f) const override { return false; }
void repair_up(app* e) override;
bool repair_down(app* e) override;