# MutantHub mutant #2981: Logical operator mutation at interpreter.ipp:920
# Repository: libbitcoin/libbitcoin-system @ 8e7a9fdcb4ca72bc5bfe9961815aaa9bc33b64a0
# File: include/bitcoin/system/impl/machine/interpreter.ipp:920-920
# Review: APPROVED; outcome: KILLED
--- a/include/bitcoin/system/impl/machine/interpreter.ipp
+++ b/include/bitcoin/system/impl/machine/interpreter.ipp
@@ -920,1 +920,1 @@
-    this->push_bool(!is_lesser(value, lower) && is_lesser(value, upper));
+    this->push_bool(!is_lesser(value, lower) || is_lesser(value, upper));