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fix #3831

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2020-04-09 17:44:20 -07:00
parent bd3946677c
commit 4651bffafc
6 changed files with 86 additions and 83 deletions
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23
src/muz/base/dl_util.cpp
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@ -420,32 +420,31 @@ namespace datalog {
void reverse_renaming(ast_manager & m, const expr_ref_vector & src, expr_ref_vector & tgt) {
void reverse_renaming(const var_ref_vector & src, var_ref_vector & tgt) {
ast_manager& m = src.m();
SASSERT(tgt.empty());
unsigned src_sz = src.size();
unsigned src_ofs = src_sz-1;
unsigned src_ofs = src_sz - 1;
unsigned max_var_idx = 0;
for(unsigned i=0; i<src_sz; i++) {
if(!src[i]) {
if (!src[i]) {
continue;
}
SASSERT(is_var(src[i]));
unsigned var_idx = to_var(src[i])->get_idx();
if(var_idx>max_var_idx) {
max_var_idx=var_idx;
unsigned var_idx = src[i]->get_idx();
if (var_idx > max_var_idx) {
max_var_idx = var_idx;
}
}
unsigned tgt_sz = max_var_idx+1;
unsigned tgt_ofs = tgt_sz-1;
unsigned tgt_ofs = tgt_sz - 1;
tgt.resize(tgt_sz, nullptr);
for(unsigned i=0; i<src_sz; i++) {
expr * e = src[src_ofs-i];
if(!e) {
for(unsigned i = 0; i < src_sz; i++) {
var* v = src[src_ofs-i];
if (!v) {
continue;
}
var * v = to_var(e);
unsigned var_idx = v->get_idx();
tgt[tgt_ofs-var_idx] = m.mk_var(i, v->get_sort());
}