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#5532 add blocking condition for recursion.

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This commit is contained in:
Nikolaj Bjorner 2021-09-07 12:28:18 +02:00
parent 93415740b6
commit 8c406c161e
2 changed files with 13 additions and 8 deletions
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17
src/ast/rewriter/rewriter_def.h
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@ -195,14 +195,15 @@ bool rewriter_tpl<Config>::visit(expr * t, unsigned max_depth) {
if (process_const<ProofGen>(to_app(t)))
return true;
TRACE("rewriter_const", tout << "process const: " << mk_bounded_pp(t, m()) << " -> " << mk_bounded_pp(m_r, m()) << "\n";);
#if 1
#else
// disabled pending fix for loop/stack overflow in case of recursive expansion (possible)
rewriter_tpl rw(m(), false, m_cfg);
expr_ref result(m());
rw(m_r, result, m_pr);
m_r = result;
#endif
if (!is_blocked(t)) {
rewriter_tpl rw(m(), false, m_cfg);
for (auto* s : m_blocked)
rw.block(s);
rw.block(t);
expr_ref result(m());
rw(m_r, result, m_pr);
m_r = result;
}
set_new_child_flag(t, m_r);
result_stack().push_back(m_r);
return true;