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#5467

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This commit is contained in:
Nikolaj Bjorner 2021-10-12 10:16:15 -07:00
parent c3549ec784
commit 52032b9ef8
9 changed files with 38 additions and 21 deletions
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9
src/ast/rewriter/seq_eq_solver.cpp
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@ -15,6 +15,7 @@ Author:
--*/
#include "ast/ast_pp.h"
#include "ast/rewriter/seq_eq_solver.h"
#include "ast/bv_decl_plugin.h"
@ -675,7 +676,7 @@ namespace seq {
if (rs.size() > i) {
unsigned diff = rs.size() - (i + 1);
for (unsigned j = 0; same && j < i; ++j)
same = !m.are_distinct(ls[j], rs[diff + j]);
same = !m.are_distinct(ls[j], rs[diff + j]);
}
// ls = x ++ rs ++ y, diff = |x|
else {
@ -704,8 +705,9 @@ namespace seq {
bool same = true;
// ls = x ++ rs' && rs = rs' ++ y, diff = |x|
if (rs.size() > i) {
for (unsigned j = 1; same && j <= i; ++j)
same = !m.are_distinct(ls[diff + j], rs[j]);
for (unsigned j = 1; same && j <= i; ++j) {
same = !m.are_distinct(ls[diff + j], rs[j]);
}
}
// ls = x ++ rs ++ y, diff = |x|
else {
@ -715,6 +717,7 @@ namespace seq {
if (same)
return true;
}
return false;
}