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replace restore_size_trail by more generic restore_vector

Browse source 
other updates:
- change signature of advance_qhead to simplify call sites
- have model reconstruction replay work on a tail of dependent_expr state, while adding formulas to the tail.
This commit is contained in:
Nikolaj Bjorner 2022-11-28 11:45:56 +07:00
parent 6454014119
commit 85f9c7eefa
25 changed files with 80 additions and 59 deletions
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1
src/ast/converters/generic_model_converter.cpp
View file

@ -36,7 +36,6 @@ generic_model_converter::~generic_model_converter() {
void generic_model_converter::add(func_decl * d, expr* e) {
VERIFY(e);
VERIFY(d->get_range() == e->get_sort());
m_first_idx.insert_if_not_there(d, m_entries.size());
m_entries.push_back(entry(d, e, m, ADD));
}

3
src/ast/converters/generic_model_converter.h
View file

@ -35,7 +35,6 @@ private:
ast_manager& m;
std::string m_orig;
vector<entry> m_entries;
obj_map<func_decl, unsigned> m_first_idx;
expr_ref simplify_def(entry const& e);
@ -71,6 +70,8 @@ public:
void get_units(obj_map<expr, bool>& units) override;
vector<entry> const& entries() const { return m_entries; }
void shrink(unsigned j) { m_entries.shrink(j); }
};
typedef ref<generic_model_converter> generic_model_converter_ref;

4
src/ast/converters/model_converter.h
View file

@ -101,6 +101,10 @@ typedef sref_buffer<model_converter> model_converter_ref_buffer;
model_converter * concat(model_converter * mc1, model_converter * mc2);
inline model_converter * concat(model_converter * mc1, model_converter * mc2, model_converter* mc3) {
return concat(mc1, concat(mc2, mc3));
}
model_converter * model2model_converter(model * m);
model_converter * model_and_labels2model_converter(model * m, labels_vec const &r);

2
src/ast/simplifiers/bit_blaster.cpp
View file

@ -61,7 +61,7 @@ void bit_blaster::reduce() {
}
m_rewriter.cleanup();
advance_qhead(m_fmls.size());
advance_qhead();
}

2
src/ast/simplifiers/bv_slice.cpp
View file

@ -24,7 +24,7 @@ namespace bv {
void slice::reduce() {
process_eqs();
apply_subst();
advance_qhead(m_fmls.size());
advance_qhead();
}
void slice::process_eqs() {

2
src/ast/simplifiers/card2bv.cpp
View file

@ -49,7 +49,7 @@ void card2bv::reduce() {
for (func_decl* f : fns)
m_fmls.model_trail().hide(f);
advance_qhead(m_fmls.size());
advance_qhead();
}
void card2bv::collect_statistics(statistics& st) const {

3
src/ast/simplifiers/dependent_expr_state.h
View file

@ -69,7 +69,7 @@ protected:
unsigned num_scopes() const { return m_trail.get_num_scopes(); }
void advance_qhead(unsigned sz) { if (num_scopes() > 0) m_trail.push(value_trail(m_qhead)); m_qhead = sz; }
void advance_qhead() { if (num_scopes() > 0) m_trail.push(value_trail(m_qhead)); m_qhead = m_fmls.size(); }
public:
dependent_expr_simplifier(ast_manager& m, dependent_expr_state& s) : m(m), m_fmls(s), m_trail(s.m_trail) {}
virtual ~dependent_expr_simplifier() {}
@ -80,6 +80,7 @@ public:
virtual void reset_statistics() {}
virtual void updt_params(params_ref const& p) {}
virtual void collect_param_descrs(param_descrs& r) {}
unsigned qhead() const { return m_qhead; }
};
/**

2
src/ast/simplifiers/elim_unconstrained.cpp
View file

@ -302,5 +302,5 @@ void elim_unconstrained::reduce() {
vector<dependent_expr> old_fmls;
assert_normalized(old_fmls);
update_model_trail(*mc, old_fmls);
advance_qhead(m_fmls.size());
advance_qhead();
}

2
src/ast/simplifiers/euf_completion.cpp
View file

@ -128,7 +128,7 @@ namespace euf {
CTRACE("euf_completion", g != f, tout << mk_bounded_pp(f, m) << " -> " << mk_bounded_pp(g, m) << "\n");
}
if (!m_has_new_eq)
advance_qhead(m_fmls.size());
advance_qhead();
}
bool completion::is_new_eq(expr* a, expr* b) {

2
src/ast/simplifiers/max_bv_sharing.cpp
View file

@ -261,7 +261,7 @@ public:
m_fmls.update(idx, dependent_expr(m, new_curr, d));
}
m_rw.cfg().cleanup();
advance_qhead(m_fmls.size());
advance_qhead();
}
};

33
src/ast/simplifiers/model_reconstruction_trail.cpp
View file

@ -15,6 +15,7 @@ Author:
#include "ast/for_each_expr.h"
#include "ast/rewriter/macro_replacer.h"
#include "ast/simplifiers/model_reconstruction_trail.h"
#include "ast/simplifiers/dependent_expr_state.h"
#include "ast/converters/generic_model_converter.h"
@ -22,13 +23,11 @@ Author:
// substitutions that use variables from the dependent expressions.
// TODO: add filters to skip sections of the trail that do not touch the current free variables.
void model_reconstruction_trail::replay(dependent_expr const& d, vector<dependent_expr>& added) {
void model_reconstruction_trail::replay(unsigned qhead, dependent_expr_state& st) {
ast_mark free_vars;
scoped_ptr<expr_replacer> rp = mk_default_expr_replacer(m, false);
add_vars(d, free_vars);
added.push_back(d);
for (unsigned i = qhead; i < st.size(); ++i)
add_vars(st[i], free_vars);
for (auto& t : m_trail) {
if (!t->m_active)
@ -44,9 +43,10 @@ void model_reconstruction_trail::replay(dependent_expr const& d, vector<dependen
// loose entries that intersect with free vars are deleted from the trail
// and their removed formulas are added to the resulting constraints.
if (t->is_loose()) {
added.append(t->m_removed);
for (auto r : t->m_removed)
add_vars(r, free_vars);
for (auto r : t->m_removed) {
add_vars(r, free_vars);
st.add(r);
}
m_trail_stack.push(value_trail(t->m_active));
t->m_active = false;
continue;
@ -64,12 +64,12 @@ void model_reconstruction_trail::replay(dependent_expr const& d, vector<dependen
dependent_expr de(m, t->m_def, t->m_dep);
add_vars(de, free_vars);
for (auto& d : added) {
auto [f, dep1] = d();
for (unsigned i = qhead; i < st.size(); ++i) {
auto [f, dep1] = st[i]();
expr_ref g(m);
expr_dependency_ref dep2(m);
mrp(f, g, dep2);
d = dependent_expr(m, g, m.mk_join(dep1, dep2));
st.update(i, dependent_expr(m, g, m.mk_join(dep1, dep2)));
}
continue;
}
@ -77,11 +77,12 @@ void model_reconstruction_trail::replay(dependent_expr const& d, vector<dependen
rp->set_substitution(t->m_subst.get());
// rigid entries:
// apply substitution to added in case of rigid model convertions
for (auto& d : added) {
auto [f, dep1] = d();
for (unsigned i = qhead; i < st.size(); ++i) {
auto [f, dep1] = st[i]();
auto [g, dep2] = rp->replace_with_dep(f);
d = dependent_expr(m, g, m.mk_join(dep1, dep2));
dependent_expr d(m, g, m.mk_join(dep1, dep2));
add_vars(d, free_vars);
st.update(i, d);
}
}
}
@ -116,3 +117,7 @@ void model_reconstruction_trail::append(generic_model_converter& mc, unsigned& i
}
void model_reconstruction_trail::append(generic_model_converter& mc) {
m_trail_stack.push(value_trail(m_trail_index));
append(mc, m_trail_index);
}

17
src/ast/simplifiers/model_reconstruction_trail.h
View file

@ -31,6 +31,8 @@ Author:
#include "ast/converters/model_converter.h"
#include "ast/converters/generic_model_converter.h"
class dependent_expr_state;
class model_reconstruction_trail {
struct entry {
@ -41,7 +43,6 @@ class model_reconstruction_trail {
expr_dependency_ref m_dep;
bool m_active = true;
entry(ast_manager& m, expr_substitution* s, vector<dependent_expr> const& rem) :
m_subst(s), m_removed(rem), m_decl(m), m_def(m), m_dep(m) {}
@ -71,6 +72,7 @@ class model_reconstruction_trail {
ast_manager& m;
trail_stack& m_trail_stack;
scoped_ptr_vector<entry> m_trail;
unsigned m_trail_index = 0;
void add_vars(dependent_expr const& d, ast_mark& free_vars) {
for (expr* t : subterms::all(expr_ref(d.fml(), d.get_manager())))
@ -87,6 +89,10 @@ class model_reconstruction_trail {
return any_of(added, [&](dependent_expr const& d) { return intersects(free_vars, d); });
}
/**
* Append new updates to model converter, update the current index into the trail in the process.
*/
void append(generic_model_converter& mc, unsigned& index);
public:
model_reconstruction_trail(ast_manager& m, trail_stack& tr):
@ -120,16 +126,17 @@ public:
* register a new depedent expression, update the trail
* by removing substitutions that are not equivalence preserving.
*/
void replay(dependent_expr const& d, vector<dependent_expr>& added);
void replay(unsigned qhead, dependent_expr_state& fmls);
/**
* retrieve the current model converter corresponding to chaining substitutions from the trail.
*/
model_converter_ref get_model_converter();
/**
* Append new updates to model converter, update the current index into the trail in the process.
* Append new updates to model converter, update m_trail_index in the process.
*/
void append(generic_model_converter& mc, unsigned& index);
void append(generic_model_converter& mc);
};

5
src/ast/simplifiers/propagate_values.cpp
View file

@ -25,11 +25,12 @@ Notes:
#include "ast/shared_occs.h"
#include "ast/simplifiers/propagate_values.h"
propagate_values::propagate_values(ast_manager& m, dependent_expr_state& fmls):
propagate_values::propagate_values(ast_manager& m, params_ref const& p, dependent_expr_state& fmls):
dependent_expr_simplifier(m, fmls),
m_rewriter(m) {
m_rewriter.set_order_eq(true);
m_rewriter.set_flat_and_or(false);
updt_params(p);
}
void propagate_values::reduce() {
@ -96,7 +97,7 @@ void propagate_values::reduce() {
m_rewriter.set_substitution(nullptr);
m_rewriter.reset();
advance_qhead(m_fmls.size());
advance_qhead();
}
void propagate_values::collect_statistics(statistics& st) const {

2
src/ast/simplifiers/propagate_values.h
View file

@ -36,7 +36,7 @@ class propagate_values : public dependent_expr_simplifier {
unsigned m_max_rounds = 4;
public:
propagate_values(ast_manager& m, dependent_expr_state& fmls);
propagate_values(ast_manager& m, params_ref const& p, dependent_expr_state& fmls);
void reduce() override;
void collect_statistics(statistics& st) const override;
void reset_statistics() override { m_stats.reset(); }

1
src/ast/simplifiers/seq_simplifier.h
View file

@ -38,6 +38,7 @@ public:
break;
s->reduce();
}
advance_qhead();
}
void collect_statistics(statistics& st) const override {

2
src/ast/simplifiers/solve_eqs.cpp
View file

@ -237,7 +237,7 @@ namespace euf {
save_subst(old_fmls);
}
advance_qhead(m_fmls.size());
advance_qhead();
}
void solve_eqs::save_subst(vector<dependent_expr> const& old_fmls) {

1
src/sat/sat_solver.h
View file

@ -485,6 +485,7 @@ namespace sat {
// -----------------------
public:
lbool check(unsigned num_lits = 0, literal const* lits = nullptr);
lbool check(literal_vector const& lits) { return check(lits.size(), lits.data()); }
// retrieve model if solver return sat
model const & get_model() const { return m_model; }

4
src/sat/smt/arith_solver.cpp
View file

@ -893,11 +893,11 @@ namespace arith {
theory_var other = m_model_eqs.insert_if_not_there(v);
TRACE("arith", tout << "insert: v" << v << " := " << get_value(v) << " found: v" << other << "\n";);
if (!is_equal(other, v))
m_assume_eq_candidates.push_back(std::make_pair(v, other));
m_assume_eq_candidates.push_back({ v, other });
}
if (m_assume_eq_candidates.size() > old_sz)
ctx.push(restore_size_trail<std::pair<theory_var, theory_var>, false>(m_assume_eq_candidates, old_sz));
ctx.push(restore_vector(m_assume_eq_candidates, old_sz));
return delayed_assume_eqs();
}

2
src/sat/smt/bv_solver.cpp
View file

@ -419,7 +419,7 @@ namespace bv {
}
ctx.push(value_trail(m_lit_tail));
ctx.push(restore_size_trail(m_proof_literals));
ctx.push(restore_vector(m_proof_literals));
sat::literal_vector lits;
switch (c.m_kind) {

16
src/sat/smt/euf_proof.cpp
View file

@ -84,7 +84,7 @@ namespace euf {
return nullptr;
push(value_trail(m_lit_tail));
push(value_trail(m_cc_tail));
push(restore_size_trail(m_proof_literals));
push(restore_vector(m_proof_literals));
if (conseq != sat::null_literal)
m_proof_literals.push_back(~conseq);
m_proof_literals.append(r);
@ -101,8 +101,8 @@ namespace euf {
SASSERT(a->get_decl() == b->get_decl());
push(value_trail(m_lit_tail));
push(value_trail(m_cc_tail));
push(restore_size_trail(m_proof_literals));
push(restore_size_trail(m_explain_cc, m_explain_cc.size()));
push(restore_vector(m_proof_literals));
push(restore_vector(m_explain_cc));
for (auto lit : ante)
m_proof_literals.push_back(~lit);
@ -121,7 +121,7 @@ namespace euf {
return nullptr;
push(value_trail(m_lit_tail));
push(value_trail(m_cc_tail));
push(restore_size_trail(m_proof_literals));
push(restore_vector(m_proof_literals));
for (unsigned i = 0; i < 3; ++i)
m_proof_literals.push_back(~clause[i]);
@ -171,7 +171,7 @@ namespace euf {
if (!use_drat())
return nullptr;
push(value_trail(m_lit_tail));
push(restore_size_trail(m_proof_literals));
push(restore_vector(m_proof_literals));
for (unsigned i = 0; i < nl; ++i)
m_proof_literals.push_back(~lits[i]);
@ -190,7 +190,7 @@ namespace euf {
if (!use_drat())
return nullptr;
push(value_trail(m_lit_tail));
push(restore_size_trail(m_proof_literals));
push(restore_vector(m_proof_literals));
for (unsigned i = 0; i < nl; ++i)
if (sat::null_literal != lits[i]) {
@ -203,11 +203,11 @@ namespace euf {
}
push(value_trail(m_eq_tail));
push(restore_size_trail(m_proof_eqs));
push(restore_vector(m_proof_eqs));
m_proof_eqs.append(ne, eqs);
push(value_trail(m_deq_tail));
push(restore_size_trail(m_proof_deqs));
push(restore_vector(m_proof_deqs));
m_proof_deqs.append(nd, deqs);
m_lit_head = m_lit_tail;

2
src/sat/smt/euf_solver.cpp
View file

@ -225,7 +225,7 @@ namespace euf {
m_egraph.begin_explain();
m_explain.reset();
if (use_drat() && !probing) {
push(restore_size_trail(m_explain_cc, m_explain_cc.size()));
push(restore_vector(m_explain_cc));
}
auto* ext = sat::constraint_base::to_extension(idx);
th_proof_hint* hint = nullptr;

4
src/smt/theory_arith_aux.h
View file

@ -2223,12 +2223,12 @@ namespace smt {
continue;
}
TRACE("func_interp_bug", tout << "adding to assume_eq queue #" << n->get_owner_id() << " #" << n2->get_owner_id() << "\n";);
m_assume_eq_candidates.push_back(std::make_pair(other, v));
m_assume_eq_candidates.push_back({ other , v });
result = true;
}
if (result)
ctx.push_trail(restore_size_trail<std::pair<theory_var, theory_var>, false>(m_assume_eq_candidates, old_sz));
ctx.push_trail(restore_vector(m_assume_eq_candidates, old_sz));
return delayed_assume_eqs();
}

2
src/smt/theory_lra.cpp
View file

@ -1515,7 +1515,7 @@ public:
}
if (num_candidates > 0) {
ctx().push_trail(restore_size_trail<std::pair<theory_var, theory_var>, false>(m_assume_eq_candidates, old_sz));
ctx().push_trail(restore_vector(m_assume_eq_candidates, old_sz));
}
return delayed_assume_eqs();

2
src/tactic/core/propagate_values2_tactic.h
View file

@ -26,7 +26,7 @@ Author:
class propagate_values2_tactic_factory : public dependent_expr_simplifier_factory {
public:
dependent_expr_simplifier* mk(ast_manager& m, params_ref const& p, dependent_expr_state& s) override {
return alloc(propagate_values, m, s);
return alloc(propagate_values, m, p, s);
}
};

23
src/util/trail.h
View file

@ -98,20 +98,21 @@ public:
}
};
template<typename T, bool CallDestructors=true>
class restore_size_trail : public trail {
vector<T, CallDestructors> & m_vector;
unsigned m_old_size;
template<typename V>
class restore_vector : public trail {
V& m_vector;
unsigned m_old_size;
public:
restore_size_trail(vector<T, CallDestructors> & v, unsigned sz):
restore_vector(V& v):
m_vector(v),
m_old_size(sz) {
}
restore_size_trail(vector<T, CallDestructors> & v):
m_old_size(v.size())
{}
restore_vector(V& v, unsigned sz):
m_vector(v),
m_old_size(v.size()) {
}
m_old_size(sz)
{}
void undo() override {
m_vector.shrink(m_old_size);
}