diff --git a/csharp/ql/test/library-tests/dataflow/external-models/ExternalFlow.expected b/csharp/ql/test/library-tests/dataflow/external-models/ExternalFlow.expected
index 6e294f0300f6..794ac23ce6b5 100644
--- a/csharp/ql/test/library-tests/dataflow/external-models/ExternalFlow.expected
+++ b/csharp/ql/test/library-tests/dataflow/external-models/ExternalFlow.expected
@@ -2,100 +2,100 @@ invalidModelRow
 edges
 | ExternalFlow.cs:9:20:9:23 | access to local variable arg1 : Object | ExternalFlow.cs:10:29:10:32 | access to local variable arg1 : Object | provenance |  |
 | ExternalFlow.cs:9:27:9:38 | object creation of type Object : Object | ExternalFlow.cs:9:20:9:23 | access to local variable arg1 : Object | provenance |  |
-| ExternalFlow.cs:10:29:10:32 | access to local variable arg1 : Object | ExternalFlow.cs:10:18:10:33 | call to method StepArgRes | provenance | MaD:0 |
+| ExternalFlow.cs:10:29:10:32 | access to local variable arg1 : Object | ExternalFlow.cs:10:18:10:33 | call to method StepArgRes | provenance | MaD:52966 |
 | ExternalFlow.cs:15:20:15:25 | access to local variable argIn1 : Object | ExternalFlow.cs:17:24:17:29 | access to local variable argIn1 : Object | provenance |  |
 | ExternalFlow.cs:15:29:15:40 | object creation of type Object : Object | ExternalFlow.cs:15:20:15:25 | access to local variable argIn1 : Object | provenance |  |
 | ExternalFlow.cs:16:20:16:26 | access to local variable argOut1 : Object | ExternalFlow.cs:18:18:18:24 | access to local variable argOut1 | provenance |  |
 | ExternalFlow.cs:16:30:16:41 | object creation of type Object : Object | ExternalFlow.cs:16:20:16:26 | access to local variable argOut1 : Object | provenance |  |
-| ExternalFlow.cs:17:24:17:29 | access to local variable argIn1 : Object | ExternalFlow.cs:17:32:17:38 | [post] access to local variable argOut1 : Object | provenance | MaD:1 |
+| ExternalFlow.cs:17:24:17:29 | access to local variable argIn1 : Object | ExternalFlow.cs:17:32:17:38 | [post] access to local variable argOut1 : Object | provenance | MaD:52967 |
 | ExternalFlow.cs:17:32:17:38 | [post] access to local variable argOut1 : Object | ExternalFlow.cs:18:18:18:24 | access to local variable argOut1 | provenance |  |
 | ExternalFlow.cs:23:20:23:23 | access to local variable arg2 : Object | ExternalFlow.cs:24:25:24:28 | access to local variable arg2 : Object | provenance |  |
 | ExternalFlow.cs:23:27:23:38 | object creation of type Object : Object | ExternalFlow.cs:23:20:23:23 | access to local variable arg2 : Object | provenance |  |
 | ExternalFlow.cs:24:13:24:29 | [post] this access : D | ExternalFlow.cs:25:18:25:21 | this access | provenance |  |
-| ExternalFlow.cs:24:25:24:28 | access to local variable arg2 : Object | ExternalFlow.cs:24:13:24:29 | [post] this access : D | provenance | MaD:2 |
+| ExternalFlow.cs:24:25:24:28 | access to local variable arg2 : Object | ExternalFlow.cs:24:13:24:29 | [post] this access : D | provenance | MaD:52968 |
 | ExternalFlow.cs:30:13:30:16 | [post] this access : D [field Field] : Object | ExternalFlow.cs:31:18:31:21 | this access : D [field Field] : Object | provenance |  |
 | ExternalFlow.cs:30:26:30:37 | object creation of type Object : Object | ExternalFlow.cs:30:13:30:16 | [post] this access : D [field Field] : Object | provenance |  |
-| ExternalFlow.cs:31:18:31:21 | this access : D [field Field] : Object | ExternalFlow.cs:31:18:31:39 | call to method StepFieldGetter | provenance | MaD:3 |
+| ExternalFlow.cs:31:18:31:21 | this access : D [field Field] : Object | ExternalFlow.cs:31:18:31:39 | call to method StepFieldGetter | provenance | MaD:52969 |
 | ExternalFlow.cs:36:19:36:62 | (...) ... : D [field Field] : Object | ExternalFlow.cs:36:18:36:69 | access to field Field | provenance |  |
 | ExternalFlow.cs:36:22:36:25 | [post] this access : D [field Field] : Object | ExternalFlow.cs:37:18:37:21 | this access : D [field Field] : Object | provenance |  |
 | ExternalFlow.cs:36:22:36:55 | call to method StepFieldSetter : D [field Field2, field Field] : Object | ExternalFlow.cs:36:22:36:62 | access to field Field2 : Object [field Field] : Object | provenance |  |
 | ExternalFlow.cs:36:22:36:62 | access to field Field2 : Object [field Field] : Object | ExternalFlow.cs:36:19:36:62 | (...) ... : D [field Field] : Object | provenance |  |
-| ExternalFlow.cs:36:43:36:54 | object creation of type Object : Object | ExternalFlow.cs:36:22:36:25 | [post] this access : D [field Field] : Object | provenance | MaD:4 |
-| ExternalFlow.cs:36:43:36:54 | object creation of type Object : Object | ExternalFlow.cs:36:22:36:55 | call to method StepFieldSetter : D [field Field2, field Field] : Object | provenance | MaD:4+MaD:5 |
+| ExternalFlow.cs:36:43:36:54 | object creation of type Object : Object | ExternalFlow.cs:36:22:36:25 | [post] this access : D [field Field] : Object | provenance | MaD:52970 |
+| ExternalFlow.cs:36:43:36:54 | object creation of type Object : Object | ExternalFlow.cs:36:22:36:55 | call to method StepFieldSetter : D [field Field2, field Field] : Object | provenance | MaD:52970+MaD:52971 |
 | ExternalFlow.cs:37:18:37:21 | this access : D [field Field] : Object | ExternalFlow.cs:37:18:37:27 | access to field Field | provenance |  |
 | ExternalFlow.cs:42:13:42:16 | [post] this access : D [property Property] : Object | ExternalFlow.cs:43:18:43:21 | this access : D [property Property] : Object | provenance |  |
 | ExternalFlow.cs:42:29:42:40 | object creation of type Object : Object | ExternalFlow.cs:42:13:42:16 | [post] this access : D [property Property] : Object | provenance |  |
-| ExternalFlow.cs:43:18:43:21 | this access : D [property Property] : Object | ExternalFlow.cs:43:18:43:42 | call to method StepPropertyGetter | provenance | MaD:6 |
+| ExternalFlow.cs:43:18:43:21 | this access : D [property Property] : Object | ExternalFlow.cs:43:18:43:42 | call to method StepPropertyGetter | provenance | MaD:52972 |
 | ExternalFlow.cs:48:13:48:16 | [post] this access : D [property Property] : Object | ExternalFlow.cs:49:18:49:21 | this access : D [property Property] : Object | provenance |  |
-| ExternalFlow.cs:48:37:48:48 | object creation of type Object : Object | ExternalFlow.cs:48:13:48:16 | [post] this access : D [property Property] : Object | provenance | MaD:7 |
+| ExternalFlow.cs:48:37:48:48 | object creation of type Object : Object | ExternalFlow.cs:48:13:48:16 | [post] this access : D [property Property] : Object | provenance | MaD:52973 |
 | ExternalFlow.cs:49:18:49:21 | this access : D [property Property] : Object | ExternalFlow.cs:49:18:49:30 | access to property Property | provenance |  |
 | ExternalFlow.cs:54:13:54:16 | [post] this access : D [element] : Object | ExternalFlow.cs:55:18:55:21 | this access : D [element] : Object | provenance |  |
-| ExternalFlow.cs:54:36:54:47 | object creation of type Object : Object | ExternalFlow.cs:54:13:54:16 | [post] this access : D [element] : Object | provenance | MaD:9 |
-| ExternalFlow.cs:55:18:55:21 | this access : D [element] : Object | ExternalFlow.cs:55:18:55:41 | call to method StepElementGetter | provenance | MaD:8 |
+| ExternalFlow.cs:54:36:54:47 | object creation of type Object : Object | ExternalFlow.cs:54:13:54:16 | [post] this access : D [element] : Object | provenance | MaD:52975 |
+| ExternalFlow.cs:55:18:55:21 | this access : D [element] : Object | ExternalFlow.cs:55:18:55:41 | call to method StepElementGetter | provenance | MaD:52974 |
 | ExternalFlow.cs:60:35:60:35 | o : Object | ExternalFlow.cs:60:47:60:47 | access to parameter o | provenance |  |
-| ExternalFlow.cs:60:64:60:75 | object creation of type Object : Object | ExternalFlow.cs:60:35:60:35 | o : Object | provenance | MaD:10 |
+| ExternalFlow.cs:60:64:60:75 | object creation of type Object : Object | ExternalFlow.cs:60:35:60:35 | o : Object | provenance | MaD:52976 |
 | ExternalFlow.cs:65:17:65:17 | access to local variable o : Object | ExternalFlow.cs:66:18:66:18 | access to local variable o | provenance |  |
 | ExternalFlow.cs:65:21:65:60 | call to method Apply<Int32,Object> : Object | ExternalFlow.cs:65:17:65:17 | access to local variable o : Object | provenance |  |
-| ExternalFlow.cs:65:45:65:56 | object creation of type Object : Object | ExternalFlow.cs:65:21:65:60 | call to method Apply<Int32,Object> : Object | provenance | MaD:11 |
+| ExternalFlow.cs:65:45:65:56 | object creation of type Object : Object | ExternalFlow.cs:65:21:65:60 | call to method Apply<Int32,Object> : Object | provenance | MaD:52977 |
 | ExternalFlow.cs:71:17:71:20 | access to local variable objs : null [element] : Object | ExternalFlow.cs:72:17:72:20 | access to local variable objs : null [element] : Object | provenance |  |
 | ExternalFlow.cs:71:30:71:45 | { ..., ... } : null [element] : Object | ExternalFlow.cs:71:17:71:20 | access to local variable objs : null [element] : Object | provenance |  |
 | ExternalFlow.cs:71:32:71:43 | object creation of type Object : Object | ExternalFlow.cs:71:30:71:45 | { ..., ... } : null [element] : Object | provenance |  |
-| ExternalFlow.cs:72:17:72:20 | access to local variable objs : null [element] : Object | ExternalFlow.cs:72:23:72:23 | o : Object | provenance | MaD:14 |
+| ExternalFlow.cs:72:17:72:20 | access to local variable objs : null [element] : Object | ExternalFlow.cs:72:23:72:23 | o : Object | provenance | MaD:52980 |
 | ExternalFlow.cs:72:23:72:23 | o : Object | ExternalFlow.cs:72:35:72:35 | access to parameter o | provenance |  |
 | ExternalFlow.cs:77:17:77:20 | access to local variable objs : T[] [element] : Object | ExternalFlow.cs:78:18:78:21 | access to local variable objs : T[] [element] : Object | provenance |  |
 | ExternalFlow.cs:77:24:77:58 | call to method Map<Int32,Object> : T[] [element] : Object | ExternalFlow.cs:77:17:77:20 | access to local variable objs : T[] [element] : Object | provenance |  |
-| ExternalFlow.cs:77:46:77:57 | object creation of type Object : Object | ExternalFlow.cs:77:24:77:58 | call to method Map<Int32,Object> : T[] [element] : Object | provenance | MaD:15 |
+| ExternalFlow.cs:77:46:77:57 | object creation of type Object : Object | ExternalFlow.cs:77:24:77:58 | call to method Map<Int32,Object> : T[] [element] : Object | provenance | MaD:52981 |
 | ExternalFlow.cs:78:18:78:21 | access to local variable objs : T[] [element] : Object | ExternalFlow.cs:78:18:78:24 | access to array element | provenance |  |
 | ExternalFlow.cs:83:17:83:20 | access to local variable objs : null [element] : Object | ExternalFlow.cs:84:29:84:32 | access to local variable objs : null [element] : Object | provenance |  |
 | ExternalFlow.cs:83:30:83:45 | { ..., ... } : null [element] : Object | ExternalFlow.cs:83:17:83:20 | access to local variable objs : null [element] : Object | provenance |  |
 | ExternalFlow.cs:83:32:83:43 | object creation of type Object : Object | ExternalFlow.cs:83:30:83:45 | { ..., ... } : null [element] : Object | provenance |  |
 | ExternalFlow.cs:84:17:84:21 | access to local variable objs2 : T[] [element] : Object | ExternalFlow.cs:85:18:85:22 | access to local variable objs2 : T[] [element] : Object | provenance |  |
 | ExternalFlow.cs:84:25:84:41 | call to method Map<Object,Object> : T[] [element] : Object | ExternalFlow.cs:84:17:84:21 | access to local variable objs2 : T[] [element] : Object | provenance |  |
-| ExternalFlow.cs:84:29:84:32 | access to local variable objs : null [element] : Object | ExternalFlow.cs:84:25:84:41 | call to method Map<Object,Object> : T[] [element] : Object | provenance | MaD:14 |
-| ExternalFlow.cs:84:29:84:32 | access to local variable objs : null [element] : Object | ExternalFlow.cs:84:35:84:35 | o : Object | provenance | MaD:14 |
+| ExternalFlow.cs:84:29:84:32 | access to local variable objs : null [element] : Object | ExternalFlow.cs:84:25:84:41 | call to method Map<Object,Object> : T[] [element] : Object | provenance | MaD:52980 |
+| ExternalFlow.cs:84:29:84:32 | access to local variable objs : null [element] : Object | ExternalFlow.cs:84:35:84:35 | o : Object | provenance | MaD:52980 |
 | ExternalFlow.cs:84:35:84:35 | o : Object | ExternalFlow.cs:84:40:84:40 | access to parameter o : Object | provenance |  |
 | ExternalFlow.cs:85:18:85:22 | access to local variable objs2 : T[] [element] : Object | ExternalFlow.cs:85:18:85:25 | access to array element | provenance |  |
 | ExternalFlow.cs:90:17:90:17 | access to local variable s : String | ExternalFlow.cs:91:19:91:19 | access to local variable s : String | provenance |  |
 | ExternalFlow.cs:90:21:90:34 | object creation of type String : String | ExternalFlow.cs:90:17:90:17 | access to local variable s : String | provenance |  |
-| ExternalFlow.cs:91:19:91:19 | access to local variable s : String | ExternalFlow.cs:91:30:91:30 | Int32 i : Int32 | provenance | MaD:16 |
+| ExternalFlow.cs:91:19:91:19 | access to local variable s : String | ExternalFlow.cs:91:30:91:30 | Int32 i : Int32 | provenance | MaD:52982 |
 | ExternalFlow.cs:91:30:91:30 | Int32 i : Int32 | ExternalFlow.cs:92:18:92:18 | (...) ... | provenance |  |
 | ExternalFlow.cs:98:13:98:14 | [post] access to local variable d1 : D [field Field] : Object | ExternalFlow.cs:103:16:103:17 | access to local variable d1 : D [field Field] : Object | provenance |  |
 | ExternalFlow.cs:98:13:98:14 | [post] access to local variable d1 : D [field Field] : Object | ExternalFlow.cs:104:18:104:19 | access to local variable d1 : D [field Field] : Object | provenance |  |
 | ExternalFlow.cs:98:24:98:35 | object creation of type Object : Object | ExternalFlow.cs:98:13:98:14 | [post] access to local variable d1 : D [field Field] : Object | provenance |  |
 | ExternalFlow.cs:100:20:100:20 | d : Object | ExternalFlow.cs:102:22:102:22 | access to parameter d | provenance |  |
-| ExternalFlow.cs:103:16:103:17 | access to local variable d1 : D [field Field] : Object | ExternalFlow.cs:100:20:100:20 | d : Object | provenance | MaD:12 |
+| ExternalFlow.cs:103:16:103:17 | access to local variable d1 : D [field Field] : Object | ExternalFlow.cs:100:20:100:20 | d : Object | provenance | MaD:52978 |
 | ExternalFlow.cs:104:18:104:19 | access to local variable d1 : D [field Field] : Object | ExternalFlow.cs:104:18:104:25 | access to field Field | provenance |  |
 | ExternalFlow.cs:111:13:111:13 | [post] access to local variable f : F [field MyField] : Object | ExternalFlow.cs:112:18:112:18 | access to local variable f : F [field MyField] : Object | provenance |  |
-| ExternalFlow.cs:111:24:111:35 | object creation of type Object : Object | ExternalFlow.cs:111:13:111:13 | [post] access to local variable f : F [field MyField] : Object | provenance | MaD:19 |
-| ExternalFlow.cs:112:18:112:18 | access to local variable f : F [field MyField] : Object | ExternalFlow.cs:112:18:112:25 | access to property MyProp | provenance | MaD:18 |
+| ExternalFlow.cs:111:24:111:35 | object creation of type Object : Object | ExternalFlow.cs:111:13:111:13 | [post] access to local variable f : F [field MyField] : Object | provenance | MaD:52985 |
+| ExternalFlow.cs:112:18:112:18 | access to local variable f : F [field MyField] : Object | ExternalFlow.cs:112:18:112:25 | access to property MyProp | provenance | MaD:52984 |
 | ExternalFlow.cs:117:17:117:17 | access to local variable a : null [element] : Object | ExternalFlow.cs:118:29:118:29 | access to local variable a : null [element] : Object | provenance |  |
 | ExternalFlow.cs:117:34:117:49 | { ..., ... } : null [element] : Object | ExternalFlow.cs:117:17:117:17 | access to local variable a : null [element] : Object | provenance |  |
 | ExternalFlow.cs:117:36:117:47 | object creation of type Object : Object | ExternalFlow.cs:117:34:117:49 | { ..., ... } : null [element] : Object | provenance |  |
 | ExternalFlow.cs:118:17:118:17 | access to local variable b : null [element] : Object | ExternalFlow.cs:120:18:120:18 | access to local variable b : null [element] : Object | provenance |  |
 | ExternalFlow.cs:118:21:118:30 | call to method Reverse : null [element] : Object | ExternalFlow.cs:118:17:118:17 | access to local variable b : null [element] : Object | provenance |  |
-| ExternalFlow.cs:118:29:118:29 | access to local variable a : null [element] : Object | ExternalFlow.cs:118:21:118:30 | call to method Reverse : null [element] : Object | provenance | MaD:17 |
+| ExternalFlow.cs:118:29:118:29 | access to local variable a : null [element] : Object | ExternalFlow.cs:118:21:118:30 | call to method Reverse : null [element] : Object | provenance | MaD:52983 |
 | ExternalFlow.cs:120:18:120:18 | access to local variable b : null [element] : Object | ExternalFlow.cs:120:18:120:21 | access to array element | provenance |  |
 | ExternalFlow.cs:205:17:205:18 | access to local variable o2 : Object | ExternalFlow.cs:206:46:206:47 | access to local variable o2 : Object | provenance |  |
 | ExternalFlow.cs:205:22:205:33 | object creation of type Object : Object | ExternalFlow.cs:205:17:205:18 | access to local variable o2 : Object | provenance |  |
-| ExternalFlow.cs:206:46:206:47 | access to local variable o2 : Object | ExternalFlow.cs:206:18:206:48 | call to method MixedFlowArgs | provenance | MaD:24 |
+| ExternalFlow.cs:206:46:206:47 | access to local variable o2 : Object | ExternalFlow.cs:206:18:206:48 | call to method MixedFlowArgs | provenance | MaD:52990 |
 | ExternalFlow.cs:211:17:211:18 | access to local variable o1 : Object | ExternalFlow.cs:212:60:212:61 | access to local variable o1 : Object | provenance |  |
 | ExternalFlow.cs:211:22:211:33 | object creation of type Object : Object | ExternalFlow.cs:211:17:211:18 | access to local variable o1 : Object | provenance |  |
-| ExternalFlow.cs:212:60:212:61 | access to local variable o1 : Object | ExternalFlow.cs:212:18:212:62 | call to method GeneratedFlowWithGeneratedNeutral | provenance | MaD:25 |
+| ExternalFlow.cs:212:60:212:61 | access to local variable o1 : Object | ExternalFlow.cs:212:18:212:62 | call to method GeneratedFlowWithGeneratedNeutral | provenance | MaD:52991 |
 | ExternalFlow.cs:238:17:238:17 | access to local variable h : HC | ExternalFlow.cs:239:21:239:21 | access to local variable h : HC | provenance |  |
 | ExternalFlow.cs:238:21:238:28 | object creation of type HC : HC | ExternalFlow.cs:238:17:238:17 | access to local variable h : HC | provenance |  |
 | ExternalFlow.cs:239:17:239:17 | access to local variable o : HC | ExternalFlow.cs:240:18:240:18 | access to local variable o | provenance |  |
-| ExternalFlow.cs:239:21:239:21 | access to local variable h : HC | ExternalFlow.cs:239:21:239:39 | call to method ExtensionMethod : HC | provenance | MaD:27 |
+| ExternalFlow.cs:239:21:239:21 | access to local variable h : HC | ExternalFlow.cs:239:21:239:39 | call to method ExtensionMethod : HC | provenance | MaD:52993 |
 | ExternalFlow.cs:239:21:239:39 | call to method ExtensionMethod : HC | ExternalFlow.cs:239:17:239:17 | access to local variable o : HC | provenance |  |
 | ExternalFlow.cs:256:13:256:13 | [post] access to parameter a : MyInlineArray [element] : Object | ExternalFlow.cs:257:30:257:30 | access to parameter a : MyInlineArray [element] : Object | provenance |  |
 | ExternalFlow.cs:256:20:256:31 | object creation of type Object : Object | ExternalFlow.cs:256:13:256:13 | [post] access to parameter a : MyInlineArray [element] : Object | provenance |  |
 | ExternalFlow.cs:257:17:257:17 | access to local variable b : Object | ExternalFlow.cs:258:18:258:18 | access to local variable b | provenance |  |
 | ExternalFlow.cs:257:21:257:31 | call to method GetFirst : Object | ExternalFlow.cs:257:17:257:17 | access to local variable b : Object | provenance |  |
-| ExternalFlow.cs:257:30:257:30 | access to parameter a : MyInlineArray [element] : Object | ExternalFlow.cs:257:21:257:31 | call to method GetFirst : Object | provenance | MaD:28 |
+| ExternalFlow.cs:257:30:257:30 | access to parameter a : MyInlineArray [element] : Object | ExternalFlow.cs:257:21:257:31 | call to method GetFirst : Object | provenance | MaD:52994 |
 | ExternalFlow.cs:278:17:278:17 | access to local variable j : Object | ExternalFlow.cs:279:22:279:22 | access to local variable j : Object | provenance |  |
 | ExternalFlow.cs:278:21:278:32 | object creation of type Object : Object | ExternalFlow.cs:278:17:278:17 | access to local variable j : Object | provenance |  |
 | ExternalFlow.cs:279:13:279:23 | [post] this access : J | ExternalFlow.cs:281:18:281:21 | this access : J | provenance |  |
-| ExternalFlow.cs:279:22:279:22 | access to local variable j : Object | ExternalFlow.cs:279:13:279:23 | [post] this access : J | provenance | MaD:30 |
-| ExternalFlow.cs:281:18:281:21 | this access : J | ExternalFlow.cs:281:18:281:27 | access to property Prop1 | provenance | MaD:29 |
+| ExternalFlow.cs:279:22:279:22 | access to local variable j : Object | ExternalFlow.cs:279:13:279:23 | [post] this access : J | provenance | MaD:52996 |
+| ExternalFlow.cs:281:18:281:21 | this access : J | ExternalFlow.cs:281:18:281:27 | access to property Prop1 | provenance | MaD:52995 |
 nodes
 | ExternalFlow.cs:9:20:9:23 | access to local variable arg1 : Object | semmle.label | access to local variable arg1 : Object |
 | ExternalFlow.cs:9:27:9:38 | object creation of type Object : Object | semmle.label | object creation of type Object : Object |
diff --git a/csharp/ql/test/library-tests/dataflow/threat-models/threat-models-flowtest2.expected b/csharp/ql/test/library-tests/dataflow/threat-models/threat-models-flowtest2.expected
index 2d0a36e0c589..d3ae78385bcd 100644
--- a/csharp/ql/test/library-tests/dataflow/threat-models/threat-models-flowtest2.expected
+++ b/csharp/ql/test/library-tests/dataflow/threat-models/threat-models-flowtest2.expected
@@ -9,7 +9,7 @@ edges
 | Test.cs:28:99:28:104 | access to local variable buffer : Byte[] [element] : Object | Test.cs:12:45:12:49 | bytes : Byte[] [element] : Object | provenance |  |
 | Test.cs:28:99:28:104 | access to local variable buffer : Byte[] [element] : Object | Test.cs:28:85:28:105 | call to method BytesToString : String | provenance | MaD:1887 |
 | Test.cs:34:20:34:25 | access to local variable result : String | Test.cs:37:42:37:96 | ... + ... | provenance |  Sink:MaD:948 |
-| Test.cs:34:29:34:69 | call to method ExecuteQuery : String | Test.cs:34:20:34:25 | access to local variable result : String | provenance | Src:MaD:1  |
+| Test.cs:34:29:34:69 | call to method ExecuteQuery : String | Test.cs:34:20:34:25 | access to local variable result : String | provenance | Src:MaD:52967  |
 nodes
 | Test.cs:12:45:12:49 | bytes : Byte[] [element] : Object | semmle.label | bytes : Byte[] [element] : Object |
 | Test.cs:15:20:15:61 | call to method GetString : String | semmle.label | call to method GetString : String |
diff --git a/csharp/ql/test/library-tests/dataflow/threat-models/threat-models-flowtest3.expected b/csharp/ql/test/library-tests/dataflow/threat-models/threat-models-flowtest3.expected
index 8ab21aff43c4..a8a87119e8af 100644
--- a/csharp/ql/test/library-tests/dataflow/threat-models/threat-models-flowtest3.expected
+++ b/csharp/ql/test/library-tests/dataflow/threat-models/threat-models-flowtest3.expected
@@ -9,11 +9,11 @@ edges
 | Test.cs:28:99:28:104 | access to local variable buffer : Byte[] [element] : Object | Test.cs:12:45:12:49 | bytes : Byte[] [element] : Object | provenance |  |
 | Test.cs:28:99:28:104 | access to local variable buffer : Byte[] [element] : Object | Test.cs:28:85:28:105 | call to method BytesToString : String | provenance | MaD:1887 |
 | Test.cs:34:20:34:25 | access to local variable result : String | Test.cs:37:42:37:96 | ... + ... | provenance |  Sink:MaD:948 |
-| Test.cs:34:29:34:69 | call to method ExecuteQuery : String | Test.cs:34:20:34:25 | access to local variable result : String | provenance | Src:MaD:1  |
+| Test.cs:34:29:34:69 | call to method ExecuteQuery : String | Test.cs:34:20:34:25 | access to local variable result : String | provenance | Src:MaD:52967  |
 | Test.cs:43:20:43:25 | access to local variable result : String | Test.cs:46:42:46:96 | ... + ... | provenance |  Sink:MaD:948 |
-| Test.cs:43:29:43:50 | call to method ReadEnv : String | Test.cs:43:20:43:25 | access to local variable result : String | provenance | Src:MaD:2  |
+| Test.cs:43:29:43:50 | call to method ReadEnv : String | Test.cs:43:20:43:25 | access to local variable result : String | provenance | Src:MaD:52968  |
 | Test.cs:62:20:62:25 | access to local variable result : String | Test.cs:65:42:65:96 | ... + ... | provenance |  Sink:MaD:948 |
-| Test.cs:62:29:62:48 | call to method GetCliArg : String | Test.cs:62:20:62:25 | access to local variable result : String | provenance | Src:MaD:4  |
+| Test.cs:62:29:62:48 | call to method GetCliArg : String | Test.cs:62:20:62:25 | access to local variable result : String | provenance | Src:MaD:52970  |
 nodes
 | Test.cs:12:45:12:49 | bytes : Byte[] [element] : Object | semmle.label | bytes : Byte[] [element] : Object |
 | Test.cs:15:20:15:61 | call to method GetString : String | semmle.label | call to method GetString : String |
diff --git a/csharp/ql/test/library-tests/dataflow/threat-models/threat-models-flowtest4.expected b/csharp/ql/test/library-tests/dataflow/threat-models/threat-models-flowtest4.expected
index cea7ed078b97..188dea37aee3 100644
--- a/csharp/ql/test/library-tests/dataflow/threat-models/threat-models-flowtest4.expected
+++ b/csharp/ql/test/library-tests/dataflow/threat-models/threat-models-flowtest4.expected
@@ -9,13 +9,13 @@ edges
 | Test.cs:28:99:28:104 | access to local variable buffer : Byte[] [element] : Object | Test.cs:12:45:12:49 | bytes : Byte[] [element] : Object | provenance |  |
 | Test.cs:28:99:28:104 | access to local variable buffer : Byte[] [element] : Object | Test.cs:28:85:28:105 | call to method BytesToString : String | provenance | MaD:1887 |
 | Test.cs:34:20:34:25 | access to local variable result : String | Test.cs:37:42:37:96 | ... + ... | provenance |  Sink:MaD:948 |
-| Test.cs:34:29:34:69 | call to method ExecuteQuery : String | Test.cs:34:20:34:25 | access to local variable result : String | provenance | Src:MaD:1  |
+| Test.cs:34:29:34:69 | call to method ExecuteQuery : String | Test.cs:34:20:34:25 | access to local variable result : String | provenance | Src:MaD:52967  |
 | Test.cs:43:20:43:25 | access to local variable result : String | Test.cs:46:42:46:96 | ... + ... | provenance |  Sink:MaD:948 |
-| Test.cs:43:29:43:50 | call to method ReadEnv : String | Test.cs:43:20:43:25 | access to local variable result : String | provenance | Src:MaD:2  |
+| Test.cs:43:29:43:50 | call to method ReadEnv : String | Test.cs:43:20:43:25 | access to local variable result : String | provenance | Src:MaD:52968  |
 | Test.cs:53:20:53:25 | access to local variable result : String | Test.cs:56:42:56:96 | ... + ... | provenance |  Sink:MaD:948 |
-| Test.cs:53:29:53:52 | call to method GetCustom : String | Test.cs:53:20:53:25 | access to local variable result : String | provenance | Src:MaD:3  |
+| Test.cs:53:29:53:52 | call to method GetCustom : String | Test.cs:53:20:53:25 | access to local variable result : String | provenance | Src:MaD:52969  |
 | Test.cs:62:20:62:25 | access to local variable result : String | Test.cs:65:42:65:96 | ... + ... | provenance |  Sink:MaD:948 |
-| Test.cs:62:29:62:48 | call to method GetCliArg : String | Test.cs:62:20:62:25 | access to local variable result : String | provenance | Src:MaD:4  |
+| Test.cs:62:29:62:48 | call to method GetCliArg : String | Test.cs:62:20:62:25 | access to local variable result : String | provenance | Src:MaD:52970  |
 nodes
 | Test.cs:12:45:12:49 | bytes : Byte[] [element] : Object | semmle.label | bytes : Byte[] [element] : Object |
 | Test.cs:15:20:15:61 | call to method GetString : String | semmle.label | call to method GetString : String |
diff --git a/csharp/ql/test/library-tests/dataflow/threat-models/threat-models-flowtest5.expected b/csharp/ql/test/library-tests/dataflow/threat-models/threat-models-flowtest5.expected
index 0ced6a031578..b0f3d7fede9b 100644
--- a/csharp/ql/test/library-tests/dataflow/threat-models/threat-models-flowtest5.expected
+++ b/csharp/ql/test/library-tests/dataflow/threat-models/threat-models-flowtest5.expected
@@ -9,9 +9,9 @@ edges
 | Test.cs:28:99:28:104 | access to local variable buffer : Byte[] [element] : Object | Test.cs:12:45:12:49 | bytes : Byte[] [element] : Object | provenance |  |
 | Test.cs:28:99:28:104 | access to local variable buffer : Byte[] [element] : Object | Test.cs:28:85:28:105 | call to method BytesToString : String | provenance | MaD:1887 |
 | Test.cs:43:20:43:25 | access to local variable result : String | Test.cs:46:42:46:96 | ... + ... | provenance |  Sink:MaD:948 |
-| Test.cs:43:29:43:50 | call to method ReadEnv : String | Test.cs:43:20:43:25 | access to local variable result : String | provenance | Src:MaD:3  |
+| Test.cs:43:29:43:50 | call to method ReadEnv : String | Test.cs:43:20:43:25 | access to local variable result : String | provenance | Src:MaD:52969  |
 | Test.cs:62:20:62:25 | access to local variable result : String | Test.cs:65:42:65:96 | ... + ... | provenance |  Sink:MaD:948 |
-| Test.cs:62:29:62:48 | call to method GetCliArg : String | Test.cs:62:20:62:25 | access to local variable result : String | provenance | Src:MaD:5  |
+| Test.cs:62:29:62:48 | call to method GetCliArg : String | Test.cs:62:20:62:25 | access to local variable result : String | provenance | Src:MaD:52971  |
 nodes
 | Test.cs:12:45:12:49 | bytes : Byte[] [element] : Object | semmle.label | bytes : Byte[] [element] : Object |
 | Test.cs:15:20:15:61 | call to method GetString : String | semmle.label | call to method GetString : String |
diff --git a/csharp/ql/test/library-tests/dataflow/threat-models/threat-models-flowtest6.expected b/csharp/ql/test/library-tests/dataflow/threat-models/threat-models-flowtest6.expected
index 3b60cc6ef13d..072c0c9cc74e 100644
--- a/csharp/ql/test/library-tests/dataflow/threat-models/threat-models-flowtest6.expected
+++ b/csharp/ql/test/library-tests/dataflow/threat-models/threat-models-flowtest6.expected
@@ -9,9 +9,9 @@ edges
 | Test.cs:28:99:28:104 | access to local variable buffer : Byte[] [element] : Object | Test.cs:12:45:12:49 | bytes : Byte[] [element] : Object | provenance |  |
 | Test.cs:28:99:28:104 | access to local variable buffer : Byte[] [element] : Object | Test.cs:28:85:28:105 | call to method BytesToString : String | provenance | MaD:1887 |
 | Test.cs:34:20:34:25 | access to local variable result : String | Test.cs:37:42:37:96 | ... + ... | provenance |  Sink:MaD:948 |
-| Test.cs:34:29:34:69 | call to method ExecuteQuery : String | Test.cs:34:20:34:25 | access to local variable result : String | provenance | Src:MaD:2  |
+| Test.cs:34:29:34:69 | call to method ExecuteQuery : String | Test.cs:34:20:34:25 | access to local variable result : String | provenance | Src:MaD:52968  |
 | Test.cs:62:20:62:25 | access to local variable result : String | Test.cs:65:42:65:96 | ... + ... | provenance |  Sink:MaD:948 |
-| Test.cs:62:29:62:48 | call to method GetCliArg : String | Test.cs:62:20:62:25 | access to local variable result : String | provenance | Src:MaD:5  |
+| Test.cs:62:29:62:48 | call to method GetCliArg : String | Test.cs:62:20:62:25 | access to local variable result : String | provenance | Src:MaD:52971  |
 nodes
 | Test.cs:12:45:12:49 | bytes : Byte[] [element] : Object | semmle.label | bytes : Byte[] [element] : Object |
 | Test.cs:15:20:15:61 | call to method GetString : String | semmle.label | call to method GetString : String |