From 40832e4a587e909bd3de3bf62975044104266e54 Mon Sep 17 00:00:00 2001
From: jaipadmakumar <jaip217@gmail.com>
Date: Tue, 25 Jul 2017 21:17:00 -0400
Subject: [PATCH] Fixed bug that prevented simulate annealing algorithm from
 ever performing 'swaps' within a circuit.

---
 .../org/cellocad/MIT/dnacompiler/BuildCircuitsSimAnnealing.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/main/java/org/cellocad/MIT/dnacompiler/BuildCircuitsSimAnnealing.java b/src/main/java/org/cellocad/MIT/dnacompiler/BuildCircuitsSimAnnealing.java
index a0822491..7685ccb7 100644
--- a/src/main/java/org/cellocad/MIT/dnacompiler/BuildCircuitsSimAnnealing.java
+++ b/src/main/java/org/cellocad/MIT/dnacompiler/BuildCircuitsSimAnnealing.java
@@ -313,7 +313,7 @@ private Gate getNextGate(LogicCircuit lc, Gate A_gate) {
             }
 
             //allow non-duplicate groups
-            if (!currentlyAssignedGroup(lc, g.Group)) {
+            if (!currentlyAssignedGroup(lc, g.Group) || isNextGateCurrentlyUsed(lc, g)) {
                 allowed_B_gates.put(g.Name, g);
             }