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* reorg sls

* sls

* na

* split into base and plugin

* move sat_params to params directory, add op_def repair options

* move sat_ddfw to sls, initiate sls-bv-plugin

* porting bv-sls

* adding basic plugin

* na

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* add sls-sms solver

* bv updates

* updated dependencies

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* updated dependencies

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* use portable ptr-initializer

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* move definitions to cpp

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* use template<> syntax

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* fix compiler errors for gcc

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* Bump docker/build-push-action from 6.0.0 to 6.1.0 (#7265)

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 6.0.0 to 6.1.0.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](https://github.com/docker/build-push-action/compare/v6.0.0...v6.1.0)

---
updated-dependencies:
- dependency-name: docker/build-push-action
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

* set clean shutdown for local search and re-enable local search when it parallelizes with PB solver

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* Bump docker/build-push-action from 6.1.0 to 6.2.0 (#7269)

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 6.1.0 to 6.2.0.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](https://github.com/docker/build-push-action/compare/v6.1.0...v6.2.0)

---
updated-dependencies:
- dependency-name: docker/build-push-action
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

* Fix a comment for Z3_solver_from_string (#7271)

Z3_solver_from_string accepts a string buffer with solver
assertions, not a string buffer with filename.

* trigger the build with a comment change

Signed-off-by: Lev Nachmanson <levnach@hotmail.com>

* remove macro distinction #7270

* fix #7268

* kludge to address #7232, probably superseeded by planned revision to setup/pypi

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* add new ema invariant (#7288)

* Bump docker/build-push-action from 6.2.0 to 6.3.0 (#7280)

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 6.2.0 to 6.3.0.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](https://github.com/docker/build-push-action/compare/v6.2.0...v6.3.0)

---
updated-dependencies:
- dependency-name: docker/build-push-action
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

* merge

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* fix unit test build

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* remove shared attribute

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* remove stale files

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* fix build of unit test

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* fixes and rename sls-cc to sls-euf-plugin

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* na

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* testing / debugging arithmetic

* updates to repair logic, mainly arithmetic

* fixes to sls

* evolve sls arith

* bugfixes in sls-arith

* fix typo

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* bug fixes

* Update sls_test.cpp

* fixes

* fixes

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* fix build

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* refactor basic plugin and clause generation

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* fixes to ite and other

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* updates

* update

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* fix division by 0

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* disable fail restart

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* disable tabu when using reset moves

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* update sls_test

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* add factoring

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* fixes to semantics

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* re-add tabu override

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* generalize factoring

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* fix bug

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* remove restart

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* disable tabu in fallback modes

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* localize impact of factoring

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* delay factoring

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* flatten products

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* perform lookahead update + nested mul

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* disable nested mul

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* disable nested mul, use non-lookahead

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* make reset updates recursive

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* include linear moves

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* include 5% reset probability

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* separate linear update

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* separate linear update remove 20% threshold

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* remove linear opt

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* enable multiplier expansion, enable linear move

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* use unit coefficients for muls

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* disable non-tabu version of find_nl_moves

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* remove coefficient from multiplication definition

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* reorg monomials

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* add smt params to path

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* avoid negative reward

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* use reward as proxy for score

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* use reward as proxy for score

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* use exponential decay with breaks

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* use std::pow

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* fixes to bv

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* fixes to fixed

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* fixup repairs

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* reserve for multiplication

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* fixing repair

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* include bounds checks in set random

* na

* fixes to mul

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* fix mul inverse

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* fixes to handling signed operators

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* logging and fixes

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* gcm

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* peli

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* Add .env to gitignore to prevent environment files from being tracked

* Add m_num_pelis counter to stats in sls_context

* Remove m_num_pelis member from stats struct in sls_context

* Enhance bv_sls_eval with improved repair and logging, refine is_bv_predicate in sls_bv_plugin

* Remove verbose logging in register_term function of sls_basic_plugin and fix formatting in sls_context

* Rename source files for consistency in `src/ast/sls` directory

* Refactor bv_sls files to sls_bv with namespace and class name adjustments

* Remove typename from member declarations in bv_fixed class

* fixing conca

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* Add initial implementation of bit-vector SLS evaluation module in bv_sls_eval.cpp

* Remove bv_sls_eval.cpp as part of code cleanup and refactoring

* Refactor alignment of member variables in bv_plugin of sls namespace

* Rename SLS engine related files to reflect their specific use for bit-vectors

* Refactor SLS engine and evaluator components for bit-vector specifics and adjust memory manager alignment

* Enhance bv_eval with use_current, lookahead strategies, and randomization improvements in SLS module

* Refactor verbose logging and fix logic in range adjustment functions in sls bv modules

* Remove commented verbose output in sls_bv_plugin.cpp during repair process

* Add early return after setting fixed subterms in sls_bv_fixed.cpp

* Remove redundant return statement in sls_bv_fixed.cpp

* fixes to new value propagation

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* Refactor sls bv evaluation and fix logic checks for bit operations

* Add array plugin support and update bv_eval in ast_sls module

* Add array, model value, and user sort plugins to SLS module with enhancements in array propagation logic

* Refactor array_plugin in sls to improve handling of select expressions with multiple arguments

* Enhance array plugin with early termination and propagation verification, and improve euf and user sort plugins with propagation adjustments and debugging enhancements

* Add support for handling 'distinct' expressions in SLS context and user sort plugin

* Remove model value and user sort plugins from SLS theory

* replace user plugin by euf plugin

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* remove extra file

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* Refactor handling of term registration and enhance distinct handling in sls_euf_plugin

* Add TODO list for enhancements in sls_euf_plugin.cpp

* add incremental mode

* updated package

* fix sls build

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* break sls build

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* fix build

* break build again

* fix build

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* fixes

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* fixing incremental

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* avoid units

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* fixup handling of disequality propagation

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* fx

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* recover shift-weight loop

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* alternate

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* throttle save model

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* allow for alternating

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* fix test for new signature of flip

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* bug fixes

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* restore use of value_hash

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* fixes

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* adding dt plugin

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* adt

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* dt updates

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* added cycle detection

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* updated sls-datatype

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* Refactor context management, improve datatype handling, and enhance logging in sls plugins.

* axiomatize dt

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* add missing factory plugins to model

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* fixup finite domain search

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* fixup finite domain search

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* fixes

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* redo dfs

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* fixing model construction for underspecified operators

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* fixes to occurs check

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* fixup interpretation building

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* saturate worklist

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* delay distinct axiom

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* adding model-based sls for datatatypes

* update the interface in sls_solver to transfer phase between SAT and SLS

* add value transfer option

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* rename aux functions

* Track shared variables using a unit set

* debugging parallel integration

* fix dirty flag setting

* update log level

* add plugin to smt_context, factor out sls_smt_plugin functionality.

* bug fixes

* fixes

* use common infrastructure for sls-smt

* fix build

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* fix build

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* remove declaration of context

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* add virtual destructor

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* build warnings

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* reorder inclusion order to define smt_context before theory_sls

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* change namespace for single threaded

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* check delayed eqs before nla

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* use independent completion flag for sls to avoid conflating with genuine cancelation

* validate sls-arith lemmas

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* bugfixes

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* add intblast to legacy SMT solver

* fixup model generation for theory_intblast

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* na

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* mk_value needs to accept more cases where integer expression doesn't evalate

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* use th-axioms to track origins of assertions

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* add missing operator handling for bitwise operators

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* add missing operator handling for bitwise operators

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* normalizing inequality

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* add virtual destructor

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* rework elim_unconstrained

* fix non-termination

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* use glue as computed without adjustment

* update model generation to fix model bug

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* fixes to model construction

* remove package and package lock

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* fix build warning

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* use original gai

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

---------

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
Signed-off-by: dependabot[bot] <support@github.com>
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Sergey Bronnikov <estetus@gmail.com>
Co-authored-by: Lev Nachmanson <levnach@hotmail.com>
Co-authored-by: LiviaSun <33578456+ChuyueSun@users.noreply.github.com>
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/*++
Copyright (c) 2020 Microsoft Corporation
Module Name:
sls_arith_base.h
Abstract:
Theory plugin for arithmetic local search
Author:
Nikolaj Bjorner (nbjorner) 2020-09-08
--*/
#pragma once
#include "util/obj_pair_set.h"
#include "util/checked_int64.h"
#include "util/optional.h"
#include "ast/ast_trail.h"
#include "ast/arith_decl_plugin.h"
#include "ast/sls/sls_context.h"
namespace sls {
using theory_var = int;
// local search portion for arithmetic
template<typename num_t>
class arith_base : public plugin {
enum class ineq_kind { EQ, LE, LT};
enum class var_sort { INT, REAL };
struct bound { bool is_strict = false; num_t value; };
typedef unsigned var_t;
typedef unsigned atom_t;
struct config {
double cb = 2.85;
unsigned L = 20;
unsigned t = 45;
unsigned max_no_improve = 500000;
double sp = 0.0003;
};
struct stats {
unsigned m_num_steps = 0;
};
public:
struct linear_term {
vector<std::pair<num_t, var_t>> m_args;
num_t m_coeff{ 0 };
};
struct nonlinear_coeff {
var_t v; // variable or multiplier containing x
num_t coeff; // coeff of v in inequality
unsigned p; // power
};
typedef svector<std::pair<unsigned, unsigned>> monomial_t;
// encode args <= bound, args = bound, args < bound
struct ineq : public linear_term {
vector<std::pair<var_t, vector<nonlinear_coeff>>> m_nonlinear;
vector<monomial_t> m_monomials;
ineq_kind m_op = ineq_kind::LE;
num_t m_args_value;
bool m_is_linear = true;
bool is_true() const;
std::ostream& display(std::ostream& out) const;
};
private:
class var_info {
num_t m_range{ 100000000 };
num_t m_update_value{ 0 };
unsigned m_update_timestamp = 0;
public:
var_info(expr* e, var_sort k): m_expr(e), m_sort(k) {}
expr* m_expr;
num_t m_value{ 0 };
num_t m_best_value{ 0 };
var_sort m_sort;
arith_op_kind m_op = arith_op_kind::LAST_ARITH_OP;
unsigned m_def_idx = UINT_MAX;
vector<std::pair<num_t, sat::bool_var>> m_bool_vars;
unsigned_vector m_muls;
unsigned_vector m_adds;
optional<bound> m_lo, m_hi;
// retrieve temporary value during an update.
void set_update_value(num_t const& v, unsigned timestamp) {
m_update_value = v;
m_update_timestamp = timestamp;
}
num_t const& get_update_value(unsigned ts) const {
return ts == m_update_timestamp ? m_update_value : m_value;
}
bool in_range(num_t const& n) const {
if (-m_range < n && n < m_range)
return true;
if (m_lo && !m_hi)
return n < m_lo->value + m_range;
if (!m_lo && m_hi)
return n > m_hi->value - m_range;
return false;
}
unsigned m_tabu_pos = 0, m_tabu_neg = 0;
unsigned m_last_pos = 0, m_last_neg = 0;
bool is_tabu(unsigned step, num_t const& delta) {
return (delta > 0 ? m_tabu_pos : m_tabu_neg) > step;
}
void set_step(unsigned step, unsigned tabu_step, num_t const& delta) {
if (delta > 0)
m_tabu_pos = tabu_step, m_last_pos = step;
else
m_tabu_neg = tabu_step, m_last_neg = step;
}
};
struct mul_def {
unsigned m_var;
monomial_t m_monomial;
};
struct add_def : public linear_term {
unsigned m_var;
};
struct op_def {
unsigned m_var = UINT_MAX;
arith_op_kind m_op = LAST_ARITH_OP;
unsigned m_arg1, m_arg2;
};
struct var_change {
unsigned m_var;
num_t m_delta;
double m_score;
};
stats m_stats;
config m_config;
scoped_ptr_vector<ineq> m_bool_vars;
vector<var_info> m_vars;
vector<mul_def> m_muls;
vector<add_def> m_adds;
vector<op_def> m_ops;
unsigned_vector m_expr2var;
svector<double> m_probs;
bool m_dscore_mode = false;
vector<var_change> m_updates;
var_t m_last_var = 0;
sat::literal m_last_literal = sat::null_literal;
num_t m_last_delta { 0 };
bool m_use_tabu = true;
unsigned m_updates_max_size = 45;
arith_util a;
svector<double> m_prob_break;
void invariant();
void invariant(ineq const& i);
unsigned get_num_vars() const { return m_vars.size(); }
bool eval_is_correct(var_t v);
bool repair_mul(mul_def const& md);
bool repair_add(add_def const& ad);
bool repair_mod(op_def const& od);
bool repair_idiv(op_def const& od);
bool repair_div(op_def const& od);
bool repair_rem(op_def const& od);
bool repair_power(op_def const& od);
bool repair_abs(op_def const& od);
bool repair_to_int(op_def const& od);
bool repair_to_real(op_def const& od);
bool repair(sat::literal lit);
bool in_bounds(var_t v, num_t const& value);
bool is_fixed(var_t v);
bool is_linear(var_t x, vector<nonlinear_coeff> const& nlc, num_t& b);
bool is_quadratic(var_t x, vector<nonlinear_coeff> const& nlc, num_t& a, num_t& b);
num_t mul_value_without(var_t m, var_t x);
void add_update(var_t v, num_t delta);
bool is_permitted_update(var_t v, num_t const& delta, num_t& delta_out);
unsigned m_update_timestamp = 0;
svector<var_t> m_update_trail;
bool check_update(var_t v, num_t new_value);
void apply_checked_update();
num_t value1(var_t v);
vector<num_t> m_factors;
vector<num_t> const& factor(num_t n);
num_t root_of(unsigned n, num_t a);
num_t power_of(num_t a, unsigned k);
struct monomial_elem {
num_t other_product;
var_t v;
unsigned p; // power
};
// double reward(sat::literal lit);
bool sign(sat::bool_var v) const { return !ctx.is_true(sat::literal(v, false)); }
ineq* atom(sat::bool_var bv) const { return m_bool_vars.get(bv, nullptr); }
num_t dtt(bool sign, ineq const& ineq) const { return dtt(sign, ineq.m_args_value, ineq); }
num_t dtt(bool sign, num_t const& args_value, ineq const& ineq) const;
num_t dtt(bool sign, ineq const& ineq, var_t v, num_t const& new_value) const;
num_t dtt(bool sign, ineq const& ineq, num_t const& coeff, num_t const& delta) const;
num_t dts(unsigned cl, var_t v, num_t const& new_value) const;
num_t compute_dts(unsigned cl) const;
bool is_mul(var_t v) const { return m_vars[v].m_op == arith_op_kind::OP_MUL; }
bool is_add(var_t v) const { return m_vars[v].m_op == arith_op_kind::OP_ADD; }
mul_def const& get_mul(var_t v) const { SASSERT(is_mul(v)); return m_muls[m_vars[v].m_def_idx]; }
add_def const& get_add(var_t v) const { SASSERT(is_add(v)); return m_adds[m_vars[v].m_def_idx]; }
bool update(var_t v, num_t const& new_value);
bool apply_update();
bool find_nl_moves(sat::literal lit);
bool find_lin_moves(sat::literal lit);
bool find_reset_moves(sat::literal lit);
void add_reset_update(var_t v);
void find_linear_moves(ineq const& i, var_t x, num_t const& coeff, num_t const& sum);
void find_quadratic_moves(ineq const& i, var_t x, num_t const& a, num_t const& b, num_t const& sum);
double compute_score(var_t x, num_t const& delta);
void save_best_values();
var_t mk_var(expr* e);
var_t mk_term(expr* e);
var_t mk_op(arith_op_kind k, expr* e, expr* x, expr* y);
void add_arg(linear_term& term, num_t const& c, var_t v);
void add_args(linear_term& term, expr* e, num_t const& sign);
ineq& new_ineq(ineq_kind op, num_t const& bound);
void init_ineq(sat::bool_var bv, ineq& i);
num_t divide(var_t v, num_t const& delta, num_t const& coeff);
num_t divide_floor(var_t v, num_t const& a, num_t const& b);
num_t divide_ceil(var_t v, num_t const& a, num_t const& b);
void init_bool_var_assignment(sat::bool_var v);
bool is_int(var_t v) const { return m_vars[v].m_sort == var_sort::INT; }
num_t value(var_t v) const { return m_vars[v].m_value; }
num_t const& get_update_value(var_t v) const { return m_vars[v].get_update_value(m_update_timestamp); }
bool is_num(expr* e, num_t& i);
expr_ref from_num(sort* s, num_t const& n);
void check_ineqs();
void init_bool_var(sat::bool_var bv);
void initialize_unit(sat::literal lit);
void add_le(var_t v, num_t const& n);
void add_ge(var_t v, num_t const& n);
void add_lt(var_t v, num_t const& n);
void add_gt(var_t v, num_t const& n);
std::ostream& display(std::ostream& out, var_t v) const;
std::ostream& display(std::ostream& out, add_def const& ad) const;
std::ostream& display(std::ostream& out, mul_def const& md) const;
public:
arith_base(context& ctx);
~arith_base() override {}
void register_term(expr* e) override;
bool set_value(expr* e, expr* v) override;
expr_ref get_value(expr* e) override;
void initialize() override;
void propagate_literal(sat::literal lit) override;
bool propagate() override;
void repair_up(app* e) override;
bool repair_down(app* e) override;
void repair_literal(sat::literal lit) override;
bool is_sat() override;
void on_rescale() override;
void on_restart() override;
std::ostream& display(std::ostream& out) const override;
void collect_statistics(statistics& st) const override;
void reset_statistics() override;
};
inline std::ostream& operator<<(std::ostream& out, typename arith_base<checked_int64<true>>::ineq const& ineq) {
return ineq.display(out);
}
inline std::ostream& operator<<(std::ostream& out, typename arith_base<rational>::ineq const& ineq) {
return ineq.display(out);
}
}