# MutantHub mutant #2142: Arithmetic operator mutation at txgraph.cpp:3134
# Repository: bitcoin/bitcoin @ ca45461ddb2421b4267dad0b7d7bcec88c07eba4
# File: src/txgraph.cpp:3134-3134
# Review: APPROVED; outcome: KILLED
--- a/src/txgraph.cpp
+++ b/src/txgraph.cpp
@@ -3134,1 +3134,1 @@
-                auto cost_now = max_cost - cost_done;
+                auto cost_now = max_cost + cost_done;