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-rw-r--r--backends/aiger/xaiger.cc3
1 files changed, 3 insertions, 0 deletions
diff --git a/backends/aiger/xaiger.cc b/backends/aiger/xaiger.cc
index 3cf36aca8..c996b0776 100644
--- a/backends/aiger/xaiger.cc
+++ b/backends/aiger/xaiger.cc
@@ -227,6 +227,9 @@ struct XAigerWriter
continue;
}
+ if (cell->type.in("$specify2", "$specify3", "$specrule"))
+ continue;
+
if (inst_module) {
bool abc9_flop = false;
auto it = cell->attributes.find("\\abc9_box_seq");