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add debugging facilities for github issues #384 #367

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2015-12-22 10:43:18 -08:00
parent 65da0f9f3a
commit 9c6271dded
14 changed files with 529 additions and 479 deletions
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16
src/ast/rewriter/expr_safe_replace.cpp
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@ -20,9 +20,11 @@ Revision History:
#include "expr_safe_replace.h"
#include "rewriter.h"
#include "ast_pp.h"
void expr_safe_replace::insert(expr* src, expr* dst) {
SASSERT(m.get_sort(src) == m.get_sort(dst));
m_src.push_back(src);
m_dst.push_back(dst);
m_subst.insert(src, dst);
@ -30,7 +32,7 @@ void expr_safe_replace::insert(expr* src, expr* dst) {
void expr_safe_replace::operator()(expr* e, expr_ref& res) {
m_todo.push_back(e);
expr* a, *b, *d;
expr* a, *b;
while (!m_todo.empty()) {
a = m_todo.back();
@ -39,7 +41,7 @@ void expr_safe_replace::operator()(expr* e, expr_ref& res) {
}
else if (m_subst.find(a, b)) {
m_cache.insert(a, b);
m_todo.pop_back();
m_todo.pop_back();
}
else if (is_var(a)) {
m_cache.insert(a, a);
@ -51,18 +53,21 @@ void expr_safe_replace::operator()(expr* e, expr_ref& res) {
m_args.reset();
bool arg_differs = false;
for (unsigned i = 0; i < n; ++i) {
if (m_cache.find(c->get_arg(i), d)) {
expr* d = 0, *arg = c->get_arg(i);
if (m_cache.find(arg, d)) {
m_args.push_back(d);
arg_differs |= c->get_arg(i) != d;
arg_differs |= arg != d;
SASSERT(m.get_sort(arg) == m.get_sort(d));
}
else {
m_todo.push_back(c->get_arg(i));
m_todo.push_back(arg);
}
}
if (m_args.size() == n) {
if (arg_differs) {
b = m.mk_app(c->get_decl(), m_args.size(), m_args.c_ptr());
m_refs.push_back(b);
SASSERT(m.get_sort(a) == m.get_sort(b));
} else {
b = a;
}
@ -71,6 +76,7 @@ void expr_safe_replace::operator()(expr* e, expr_ref& res) {
}
}
else {
(std::cout << "q\n").flush();
SASSERT(is_quantifier(a));
quantifier* q = to_quantifier(a);
expr_safe_replace replace(m);