diff --git a/coming_results/all_instances_found.json b/coming_results/all_instances_found.json
index 03e0fbff4..5e5406f58 100644
--- a/coming_results/all_instances_found.json
+++ b/coming_results/all_instances_found.json
@@ -1,157 +1,3 @@
 {
-  "instances": [
-    {
-      "revision": "cardumen",
-      "repairability": [
-        {
-          "tool-name": "Cardumen",
-          "pattern-name": "Cardumen;expression_replacement",
-          "Unified_Diff_of-files:": "Starts Below...",
-          "CHANGE_old:": "                    minRatioPositions.add(i);",
-          "CHANGE_new:": "                    Precision.equals(entry, 0.0, maxUlps);",
-          "instance_detail": [
-            {
-              "pattern_action": "UPD",
-              "pattern_entity": {
-                "entity_type": "Expression",
-                "entity_new value": "*",
-                "entity_role": "*",
-                "entity_parent": "null"
-              },
-              "concrete_change": {
-                "operator": "UPD",
-                "src_type": "Invocation",
-                "dst_type": "Invocation",
-                "src": "minRatioPositions.add(i)",
-                "dst": "org.apache.commons.math3.util.Precision.equals(entry, 0.0, maxUlps)",
-                "src_parent_type": "Block",
-                "dst_parent_type": "Block",
-                "src_parent": "{\r\n    minRatioPositions.add(i);\r\n}",
-                "dst_parent": "{\r\n    org.apache.commons.math3.util.Precision.equals(entry, 0.0, maxUlps);\r\n}"
-              },
-              "line": 104,
-              "file": "D:\\Daneshgah\\phd-kth\\projects\\commit summarization\\template-based\\coming\\two",
-              "stats": {
-                "number_of_src_entities": 16,
-                "number_of_dst_entities": 26,
-                "src_entity_types": "[java.lang.Integer, int, java.util.List\u003cjava.lang.Integer\u003e, java.util.List]",
-                "dst_entity_types": "[org.apache.commons.math3.util.Precision, double, org.apache.commons.math3.optimization.linear.SimplexSolver]"
-              }
-            }
-          ]
-        },
-        {
-          "tool-name": "Cardumen",
-          "pattern-name": "Cardumen;expression_replacement",
-          "Unified_Diff_of-files:": "Starts Below...",
-          "CHANGE_old:": "                    minRatioPositions.add(i);",
-          "CHANGE_new:": "                    Precision.equals(entry, 0.0, maxUlps);",
-          "instance_detail": [
-            {
-              "pattern_action": "UPD",
-              "pattern_entity": {
-                "entity_type": "Expression",
-                "entity_new value": "*",
-                "entity_role": "*",
-                "entity_parent": "null"
-              },
-              "concrete_change": {
-                "operator": "UPD",
-                "src_type": "VariableRead",
-                "dst_type": "VariableRead",
-                "src": "minRatioPositions",
-                "dst": "entry",
-                "src_parent_type": "Invocation",
-                "dst_parent_type": "Invocation",
-                "src_parent": "minRatioPositions.add(i)",
-                "dst_parent": "org.apache.commons.math3.util.Precision.equals(entry, 0.0, maxUlps)"
-              },
-              "line": 104,
-              "file": "D:\\Daneshgah\\phd-kth\\projects\\commit summarization\\template-based\\coming\\two",
-              "stats": {
-                "number_of_src_entities": 6,
-                "number_of_dst_entities": 3,
-                "src_entity_types": "[java.lang.Integer, java.util.List\u003cjava.lang.Integer\u003e]",
-                "dst_entity_types": "[double]"
-              }
-            }
-          ]
-        },
-        {
-          "tool-name": "Cardumen",
-          "pattern-name": "Cardumen;expression_replacement",
-          "Unified_Diff_of-files:": "Starts Below...",
-          "CHANGE_old:": "                    minRatioPositions.add(i);",
-          "CHANGE_new:": "                    Precision.equals(entry, 0.0, maxUlps);",
-          "instance_detail": [
-            {
-              "pattern_action": "UPD",
-              "pattern_entity": {
-                "entity_type": "Expression",
-                "entity_new value": "*",
-                "entity_role": "*",
-                "entity_parent": "null"
-              },
-              "concrete_change": {
-                "operator": "UPD",
-                "src_type": "Invocation",
-                "dst_type": "Invocation",
-                "src": "minRatioPositions.add(i)",
-                "dst": "org.apache.commons.math3.util.Precision.equals(entry, 0.0, maxUlps)",
-                "src_parent_type": "Block",
-                "dst_parent_type": "Block",
-                "src_parent": "{\r\n    minRatio \u003d ratio;\r\n    minRatioPositions \u003d new java.util.ArrayList\u003cjava.lang.Integer\u003e();\r\n    minRatioPositions.add(i);\r\n}",
-                "dst_parent": "{\r\n    minRatio \u003d ratio;\r\n    minRatioPositions \u003d new java.util.ArrayList\u003cjava.lang.Integer\u003e();\r\n    org.apache.commons.math3.util.Precision.equals(entry, 0.0, maxUlps);\r\n}"
-              },
-              "line": 108,
-              "file": "D:\\Daneshgah\\phd-kth\\projects\\commit summarization\\template-based\\coming\\two",
-              "stats": {
-                "number_of_src_entities": 16,
-                "number_of_dst_entities": 26,
-                "src_entity_types": "[java.lang.Integer, int, java.util.List\u003cjava.lang.Integer\u003e, java.util.List]",
-                "dst_entity_types": "[org.apache.commons.math3.util.Precision, double, org.apache.commons.math3.optimization.linear.SimplexSolver]"
-              }
-            }
-          ]
-        },
-        {
-          "tool-name": "Cardumen",
-          "pattern-name": "Cardumen;expression_replacement",
-          "Unified_Diff_of-files:": "Starts Below...",
-          "CHANGE_old:": "                    minRatioPositions.add(i);",
-          "CHANGE_new:": "                    Precision.equals(entry, 0.0, maxUlps);",
-          "instance_detail": [
-            {
-              "pattern_action": "UPD",
-              "pattern_entity": {
-                "entity_type": "Expression",
-                "entity_new value": "*",
-                "entity_role": "*",
-                "entity_parent": "null"
-              },
-              "concrete_change": {
-                "operator": "UPD",
-                "src_type": "VariableRead",
-                "dst_type": "VariableRead",
-                "src": "minRatioPositions",
-                "dst": "entry",
-                "src_parent_type": "Invocation",
-                "dst_parent_type": "Invocation",
-                "src_parent": "minRatioPositions.add(i)",
-                "dst_parent": "org.apache.commons.math3.util.Precision.equals(entry, 0.0, maxUlps)"
-              },
-              "line": 108,
-              "file": "D:\\Daneshgah\\phd-kth\\projects\\commit summarization\\template-based\\coming\\two",
-              "stats": {
-                "number_of_src_entities": 6,
-                "number_of_dst_entities": 3,
-                "src_entity_types": "[java.lang.Integer, java.util.List\u003cjava.lang.Integer\u003e]",
-                "dst_entity_types": "[double]"
-              }
-            }
-          ]
-        }
-      ]
-    }
-  ]
+  "instances": []
 }
\ No newline at end of file
diff --git a/pom.xml b/pom.xml
index 21baf394a..39a63ac4a 100644
--- a/pom.xml
+++ b/pom.xml
@@ -77,7 +77,7 @@
 		<dependency>
 			<groupId>fr.inria.gforge.spoon.labs </groupId>
 			<artifactId>gumtree-spoon-ast-diff</artifactId>
-			<version>1.20</version>
+			<version>1.21</version>
 		</dependency>
 
 		<dependency>
diff --git a/src/main/java/fr/inria/coming/repairability/repairtools/JGenProg.java b/src/main/java/fr/inria/coming/repairability/repairtools/JGenProg.java
index e6865c026..f7a117ecf 100644
--- a/src/main/java/fr/inria/coming/repairability/repairtools/JGenProg.java
+++ b/src/main/java/fr/inria/coming/repairability/repairtools/JGenProg.java
@@ -50,7 +50,7 @@ public boolean filter(ChangePatternInstance instance, IRevision revision) {
         } else if (anyOperation instanceof UpdateOperation) {
             element = anyOperation.getDstNode(); // See why are using DstNode: https://github.com/SpoonLabs/coming/issues/72#issuecomment-508123273
         } else if (anyOperation instanceof DeleteOperation) {
-            // ASSUMPTION ONLY A STATEMENT CAN BE DELETED
+            // ASSUMPTION: ONLY A STATEMENT CAN BE DELETED
             return anyOperation.getSrcNode().getRoleInParent() == CtRole.STATEMENT;
         } else if (anyOperation instanceof MoveOperation) {
             // based on move never occurs actually based on the analysis of our dataset but it may occur when in case of swaps(as described in the paper)