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use iterators on goal and other refactoring

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This commit is contained in:
Nikolaj Bjorner 2025-03-16 20:04:04 -07:00
parent eb97fcc273
commit 2e2a2e28df
8 changed files with 77 additions and 53 deletions
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15
src/tactic/bv/elim_small_bv_tactic.cpp
View file

@ -256,22 +256,19 @@ public:
void operator()(goal_ref const & g,
goal_ref_buffer & result) override {
tactic_report report("elim-small-bv", *g);
bool produce_proofs = g->proofs_enabled();
fail_if_proof_generation("elim-small-bv", g);
fail_if_unsat_core_generation("elim-small-bv", g);
m_rw.cfg().m_produce_models = g->models_enabled();
expr_ref new_curr(m);
proof_ref new_pr(m);
unsigned size = g->size();
for (unsigned idx = 0; !g->inconsistent() && idx < size; idx++) {
expr * curr = g->form(idx);
unsigned idx = 0;
for (auto [curr, dep, pr] : *g) {
if (g->inconsistent())
break;
m_rw(curr, new_curr, new_pr);
if (produce_proofs) {
proof * pr = g->pr(idx);
new_pr = m.mk_modus_ponens(pr, new_pr);
}
g->update(idx, new_curr, new_pr, g->dep(idx));
new_pr = m.mk_modus_ponens(pr, new_pr);
g->update(idx++, new_curr, new_pr, dep);
}
g->add(m_rw.m_cfg.m_mc.get());

7
src/tactic/core/cofactor_term_ite_tactic.cpp
View file

@ -29,14 +29,13 @@ class cofactor_term_ite_tactic : public tactic {
void process(goal & g) {
ast_manager & m = g.m();
unsigned sz = g.size();
for (unsigned i = 0; i < sz; i++) {
unsigned idx = 0;
for (auto [f, dep, pr] : g) {
if (g.inconsistent())
break;
expr * f = g.form(i);
expr_ref new_f(m);
m_elim_ite(f, new_f);
g.update(i, new_f, nullptr, g.dep(i));
g.update(idx++, new_f, nullptr, dep);
}
}

9
src/tactic/core/ctx_simplify_tactic.cpp
View file

@ -569,16 +569,15 @@ struct ctx_simplify_tactic::imp {
m_occs.reset();
m_occs(g);
m_num_steps = 0;
unsigned sz = g.size();
tactic_report report("ctx-simplify", g);
if (g.proofs_enabled()) {
expr_ref r(m);
for (unsigned i = 0; !g.inconsistent() && i < sz; ++i) {
expr * t = g.form(i);
unsigned idx = 0;
for (auto [t, dep, pr] : g) {
process(t, r);
proof_ref new_pr(m.mk_rewrite(t, r), m);
new_pr = m.mk_modus_ponens(g.pr(i), new_pr);
g.update(i, r, new_pr, g.dep(i));
new_pr = m.mk_modus_ponens(pr, new_pr);
g.update(idx++, r, new_pr, dep);
}
}
else {

13
src/tactic/core/der_tactic.cpp
View file

@ -34,21 +34,16 @@ class der_tactic : public tactic {
}
void operator()(goal & g) {
bool proofs_enabled = g.proofs_enabled();
tactic_report report("der", g);
expr_ref new_curr(m());
proof_ref new_pr(m());
unsigned size = g.size();
for (unsigned idx = 0; idx < size; idx++) {
unsigned idx = 0;
for (auto [curr, dep, pr] : g) {
if (g.inconsistent())
break;
expr * curr = g.form(idx);
m_r(curr, new_curr, new_pr);
if (proofs_enabled) {
proof * pr = g.pr(idx);
new_pr = m().mk_modus_ponens(pr, new_pr);
}
g.update(idx, new_curr, new_pr, g.dep(idx));
new_pr = m().mk_modus_ponens(pr, new_pr);
g.update(idx++, new_curr, new_pr, dep);
}
g.elim_redundancies();
}

29
src/tactic/goal.cpp
View file

@ -486,22 +486,21 @@ void goal::shrink(unsigned j) {
/**
\brief Eliminate true formulas.
*/
void goal::elim_true() {
unsigned sz = size();
unsigned j = 0;
for (unsigned i = 0; i < sz; i++) {
expr * f = form(i);
if (m().is_true(f))
continue;
if (i == j) {
j++;
void goal::elim_true() {
unsigned i = 0, j = 0;
for (auto [f, dep, pr] : *this) {
if (m().is_true(f)) {
++i;
continue;
}
m().set(m_forms, j, f);
m().set(m_proofs, j, m().get(m_proofs, i));
if (unsat_core_enabled())
m().set(m_dependencies, j, m().get(m_dependencies, i));
j++;
if (i != j) {
m().set(m_forms, j, f);
m().set(m_proofs, j, pr);
if (unsat_core_enabled())
m().set(m_dependencies, j, dep);
}
++i;
++j;
}
shrink(j);
}
@ -539,7 +538,7 @@ void goal::elim_redundancies() {
expr_ref_fast_mark1 neg_lits(m());
expr_ref_fast_mark2 pos_lits(m());
unsigned sz = size();
unsigned j = 0;
unsigned j = 0;
for (unsigned i = 0; i < sz; i++) {
expr * f = form(i);
if (m().is_true(f))

35
src/tactic/goal.h
View file

@ -165,6 +165,41 @@ public:
bool is_cnf() const;
goal * translate(ast_translation & translator) const;
class iterator {
public:
using value_type = std::tuple<expr*, expr_dependency*, proof*>;
using reference = value_type&;
using pointer = value_type*;
using difference_type = std::ptrdiff_t;
using iterator_category = std::forward_iterator_tag;
iterator(goal const* g, unsigned idx) : m_goal(g), m_idx(idx) {}
value_type operator*() const {
return std::make_tuple(m_goal->form(m_idx), m_goal->dep(m_idx), m_goal->pr(m_idx));
}
iterator& operator++() {
++m_idx;
return *this;
}
bool operator==(const iterator& other) const {
return m_goal == other.m_goal && m_idx == other.m_idx;
}
bool operator!=(const iterator& other) const {
return !(*this == other);
}
private:
goal const* m_goal;
unsigned m_idx;
};
iterator begin() const { return iterator(this, 0); }
iterator end() const { return iterator(this, size()); }
};
std::ostream & operator<<(std::ostream & out, goal::precision p);