diff --git a/ruby/ql/test/library-tests/dataflow/local/TaintStep.expected b/ruby/ql/test/library-tests/dataflow/local/TaintStep.expected
index 237c067be1bed..534ba42e2880e 100644
--- a/ruby/ql/test/library-tests/dataflow/local/TaintStep.expected
+++ b/ruby/ql/test/library-tests/dataflow/local/TaintStep.expected
@@ -2796,7 +2796,6 @@
 | UseUseExplosion.rb:21:3675:21:3680 | call to use | UseUseExplosion.rb:21:3670:21:3680 | else ... |
 | UseUseExplosion.rb:21:3686:21:3696 | else ... | UseUseExplosion.rb:21:9:21:3700 | if ... |
 | UseUseExplosion.rb:21:3691:21:3696 | call to use | UseUseExplosion.rb:21:3686:21:3696 | else ... |
-| UseUseExplosion.rb:24:5:25:7 | synthetic *args | UseUseExplosion.rb:24:13:24:13 | i |
 | UseUseExplosion.rb:24:5:25:7 | use | UseUseExplosion.rb:1:1:26:3 | C |
 | file://:0:0:0:0 | [summary param] position 0 in & | file://:0:0:0:0 | [summary] read: Argument[0].Element[any] in & |
 | file://:0:0:0:0 | [summary param] position 0 in + | file://:0:0:0:0 | [summary] read: Argument[0].Element[any] in + |
@@ -2841,7 +2840,6 @@
 | file://:0:0:0:0 | [summary] read: Argument[0].Element[any] in Hash[] | file://:0:0:0:0 | [summary] read: Argument[0].Element[any].Element[1] in Hash[] |
 | local_dataflow.rb:1:1:7:3 | self (foo) | local_dataflow.rb:3:8:3:10 | self |
 | local_dataflow.rb:1:1:7:3 | self in foo | local_dataflow.rb:1:1:7:3 | self (foo) |
-| local_dataflow.rb:1:1:7:3 | synthetic *args | local_dataflow.rb:1:9:1:9 | a |
 | local_dataflow.rb:1:1:150:3 | <uninitialized> | local_dataflow.rb:10:9:10:9 | x |
 | local_dataflow.rb:1:1:150:3 | self (local_dataflow.rb) | local_dataflow.rb:49:1:53:3 | self |
 | local_dataflow.rb:1:9:1:9 | a | local_dataflow.rb:1:9:1:9 | a |
@@ -2879,7 +2877,6 @@
 | local_dataflow.rb:10:5:13:3 | __synth__0__1 | local_dataflow.rb:10:5:13:3 | __synth__0__1 |
 | local_dataflow.rb:10:5:13:3 | __synth__0__1 | local_dataflow.rb:10:9:10:9 | x |
 | local_dataflow.rb:10:5:13:3 | call to each | local_dataflow.rb:10:5:13:3 | ... |
-| local_dataflow.rb:10:5:13:3 | synthetic *args | local_dataflow.rb:10:5:13:3 | __synth__0__1 |
 | local_dataflow.rb:10:9:10:9 | ... = ... | local_dataflow.rb:10:9:10:9 | if ... |
 | local_dataflow.rb:10:9:10:9 | defined? ... | local_dataflow.rb:10:9:10:9 | [false] ! ... |
 | local_dataflow.rb:10:9:10:9 | defined? ... | local_dataflow.rb:10:9:10:9 | [true] ! ... |
@@ -2898,7 +2895,6 @@
 | local_dataflow.rb:15:1:17:3 | __synth__0__1 | local_dataflow.rb:15:1:17:3 | __synth__0__1 |
 | local_dataflow.rb:15:1:17:3 | __synth__0__1 | local_dataflow.rb:15:5:15:5 | x |
 | local_dataflow.rb:15:1:17:3 | call to each | local_dataflow.rb:15:1:17:3 | ... |
-| local_dataflow.rb:15:1:17:3 | synthetic *args | local_dataflow.rb:15:1:17:3 | __synth__0__1 |
 | local_dataflow.rb:15:5:15:5 | ... = ... | local_dataflow.rb:15:5:15:5 | if ... |
 | local_dataflow.rb:15:5:15:5 | defined? ... | local_dataflow.rb:15:5:15:5 | [false] ! ... |
 | local_dataflow.rb:15:5:15:5 | defined? ... | local_dataflow.rb:15:5:15:5 | [true] ! ... |
@@ -2914,7 +2910,6 @@
 | local_dataflow.rb:19:1:21:3 | __synth__0__1 | local_dataflow.rb:19:1:21:3 | __synth__0__1 |
 | local_dataflow.rb:19:1:21:3 | __synth__0__1 | local_dataflow.rb:19:5:19:5 | x |
 | local_dataflow.rb:19:1:21:3 | call to each | local_dataflow.rb:19:1:21:3 | ... |
-| local_dataflow.rb:19:1:21:3 | synthetic *args | local_dataflow.rb:19:1:21:3 | __synth__0__1 |
 | local_dataflow.rb:19:5:19:5 | ... = ... | local_dataflow.rb:19:5:19:5 | if ... |
 | local_dataflow.rb:19:5:19:5 | defined? ... | local_dataflow.rb:19:5:19:5 | [false] ! ... |
 | local_dataflow.rb:19:5:19:5 | defined? ... | local_dataflow.rb:19:5:19:5 | [true] ! ... |
@@ -2933,13 +2928,11 @@
 | local_dataflow.rb:30:14:30:20 | "class" | local_dataflow.rb:30:5:30:24 | C |
 | local_dataflow.rb:32:5:32:25 | bar | local_dataflow.rb:32:1:32:1 | x |
 | local_dataflow.rb:32:5:32:25 | bar | local_dataflow.rb:32:1:32:25 | ... = ... |
-| local_dataflow.rb:34:1:39:3 | synthetic *args | local_dataflow.rb:34:7:34:7 | x |
 | local_dataflow.rb:34:7:34:7 | x | local_dataflow.rb:34:7:34:7 | x |
 | local_dataflow.rb:34:7:34:7 | x | local_dataflow.rb:35:6:35:6 | x |
 | local_dataflow.rb:35:6:35:6 | x | local_dataflow.rb:35:6:35:11 | ... == ... |
 | local_dataflow.rb:35:11:35:11 | 4 | local_dataflow.rb:35:6:35:11 | ... == ... |
 | local_dataflow.rb:36:13:36:13 | 7 | local_dataflow.rb:36:6:36:13 | return |
-| local_dataflow.rb:41:1:47:3 | synthetic *args | local_dataflow.rb:41:7:41:7 | x |
 | local_dataflow.rb:41:7:41:7 | x | local_dataflow.rb:41:7:41:7 | x |
 | local_dataflow.rb:41:7:41:7 | x | local_dataflow.rb:42:6:42:6 | x |
 | local_dataflow.rb:42:6:42:6 | x | local_dataflow.rb:42:6:42:11 | ... == ... |
@@ -2958,10 +2951,8 @@
 | local_dataflow.rb:51:20:51:20 | x | local_dataflow.rb:51:20:51:24 | ... < ... |
 | local_dataflow.rb:51:24:51:24 | 9 | local_dataflow.rb:51:20:51:24 | ... < ... |
 | local_dataflow.rb:55:5:55:13 | Array | local_dataflow.rb:55:5:55:13 | call to [] |
-| local_dataflow.rb:57:1:58:3 | synthetic *args | local_dataflow.rb:57:9:57:9 | x |
 | local_dataflow.rb:60:1:90:3 | self (test_case) | local_dataflow.rb:78:12:78:20 | self |
 | local_dataflow.rb:60:1:90:3 | self in test_case | local_dataflow.rb:60:1:90:3 | self (test_case) |
-| local_dataflow.rb:60:1:90:3 | synthetic *args | local_dataflow.rb:60:15:60:15 | x |
 | local_dataflow.rb:60:15:60:15 | x | local_dataflow.rb:60:15:60:15 | x |
 | local_dataflow.rb:60:15:60:15 | x | local_dataflow.rb:61:12:61:12 | x |
 | local_dataflow.rb:61:7:68:5 | SSA phi read(x) | local_dataflow.rb:69:12:69:12 | x |
@@ -3134,7 +3125,6 @@
 | local_dataflow.rb:118:3:118:11 | call to source | local_dataflow.rb:118:3:118:31 | call to tap |
 | local_dataflow.rb:118:3:118:11 | self | local_dataflow.rb:119:3:119:31 | self |
 | local_dataflow.rb:118:17:118:31 | <captured entry> self | local_dataflow.rb:118:23:118:29 | self |
-| local_dataflow.rb:118:17:118:31 | synthetic *args | local_dataflow.rb:118:20:118:20 | x |
 | local_dataflow.rb:118:20:118:20 | x | local_dataflow.rb:118:20:118:20 | x |
 | local_dataflow.rb:118:20:118:20 | x | local_dataflow.rb:118:28:118:28 | x |
 | local_dataflow.rb:119:3:119:31 | [post] self | local_dataflow.rb:119:8:119:16 | self |
@@ -3149,10 +3139,8 @@
 | local_dataflow.rb:123:8:123:20 | call to dup | local_dataflow.rb:123:8:123:45 | call to tap |
 | local_dataflow.rb:123:8:123:45 | call to tap | local_dataflow.rb:123:8:123:49 | call to dup |
 | local_dataflow.rb:123:26:123:45 | <captured entry> self | local_dataflow.rb:123:32:123:43 | self |
-| local_dataflow.rb:123:26:123:45 | synthetic *args | local_dataflow.rb:123:29:123:29 | x |
 | local_dataflow.rb:126:1:128:3 | self (use) | local_dataflow.rb:127:3:127:8 | self |
 | local_dataflow.rb:126:1:128:3 | self in use | local_dataflow.rb:126:1:128:3 | self (use) |
-| local_dataflow.rb:126:1:128:3 | synthetic *args | local_dataflow.rb:126:9:126:9 | x |
 | local_dataflow.rb:130:1:150:3 | self (use_use_madness) | local_dataflow.rb:132:6:132:11 | self |
 | local_dataflow.rb:130:1:150:3 | self in use_use_madness | local_dataflow.rb:130:1:150:3 | self (use_use_madness) |
 | local_dataflow.rb:131:3:131:3 | x | local_dataflow.rb:132:10:132:10 | x |
diff --git a/ruby/ql/test/library-tests/dataflow/type-tracker/TypeTracker.expected b/ruby/ql/test/library-tests/dataflow/type-tracker/TypeTracker.expected
index 15884246b73e8..9f2ed4725f500 100644
--- a/ruby/ql/test/library-tests/dataflow/type-tracker/TypeTracker.expected
+++ b/ruby/ql/test/library-tests/dataflow/type-tracker/TypeTracker.expected
@@ -7,7 +7,6 @@ track
 | type_tracker.rb:2:5:5:7 | field= | type tracker without call steps | type_tracker.rb:2:5:5:7 | field= |
 | type_tracker.rb:2:5:5:7 | self in field= | type tracker with call steps | type_tracker.rb:7:5:9:7 | self in field |
 | type_tracker.rb:2:5:5:7 | self in field= | type tracker without call steps | type_tracker.rb:2:5:5:7 | self in field= |
-| type_tracker.rb:2:5:5:7 | synthetic *args | type tracker without call steps | type_tracker.rb:2:5:5:7 | synthetic *args |
 | type_tracker.rb:2:16:2:18 | val | type tracker without call steps | type_tracker.rb:2:16:2:18 | val |
 | type_tracker.rb:2:16:2:18 | val | type tracker without call steps | type_tracker.rb:2:16:2:18 | val |
 | type_tracker.rb:2:16:2:18 | val | type tracker without call steps | type_tracker.rb:3:14:3:23 | call to field |
@@ -58,7 +57,6 @@ track
 | type_tracker.rb:18:1:21:3 | &block | type tracker without call steps | type_tracker.rb:18:1:21:3 | &block |
 | type_tracker.rb:18:1:21:3 | positional | type tracker without call steps | type_tracker.rb:18:1:21:3 | positional |
 | type_tracker.rb:18:1:21:3 | self in positional | type tracker without call steps | type_tracker.rb:18:1:21:3 | self in positional |
-| type_tracker.rb:18:1:21:3 | synthetic *args | type tracker without call steps | type_tracker.rb:18:1:21:3 | synthetic *args |
 | type_tracker.rb:18:16:18:17 | p1 | type tracker without call steps | type_tracker.rb:18:16:18:17 | p1 |
 | type_tracker.rb:18:16:18:17 | p1 | type tracker without call steps | type_tracker.rb:18:16:18:17 | p1 |
 | type_tracker.rb:18:16:18:17 | p1 | type tracker without call steps with content element 0 | type_tracker.rb:19:5:19:11 | * |
@@ -150,7 +148,6 @@ track
 | type_tracker.rb:32:26:32:26 | 8 | type tracker without call steps with content element :p1 | type_tracker.rb:32:1:32:27 | ** |
 | type_tracker.rb:34:1:53:3 | &block | type tracker without call steps | type_tracker.rb:34:1:53:3 | &block |
 | type_tracker.rb:34:1:53:3 | self in throughArray | type tracker without call steps | type_tracker.rb:34:1:53:3 | self in throughArray |
-| type_tracker.rb:34:1:53:3 | synthetic *args | type tracker without call steps | type_tracker.rb:34:1:53:3 | synthetic *args |
 | type_tracker.rb:34:1:53:3 | throughArray | type tracker without call steps | type_tracker.rb:34:1:53:3 | throughArray |
 | type_tracker.rb:34:18:34:20 | obj | type tracker without call steps | type_tracker.rb:34:18:34:20 | obj |
 | type_tracker.rb:34:18:34:20 | obj | type tracker without call steps | type_tracker.rb:34:18:34:20 | obj |
@@ -357,7 +354,6 @@ trackEnd
 | type_tracker.rb:2:5:5:7 | self in field= | type_tracker.rb:7:5:9:7 | self (field) |
 | type_tracker.rb:2:5:5:7 | self in field= | type_tracker.rb:7:5:9:7 | self in field |
 | type_tracker.rb:2:5:5:7 | self in field= | type_tracker.rb:8:9:8:14 | self |
-| type_tracker.rb:2:5:5:7 | synthetic *args | type_tracker.rb:2:5:5:7 | synthetic *args |
 | type_tracker.rb:2:16:2:18 | val | type_tracker.rb:2:16:2:18 | val |
 | type_tracker.rb:2:16:2:18 | val | type_tracker.rb:2:16:2:18 | val |
 | type_tracker.rb:2:16:2:18 | val | type_tracker.rb:2:16:2:18 | val |
@@ -429,7 +425,6 @@ trackEnd
 | type_tracker.rb:18:1:21:3 | self in positional | type_tracker.rb:18:1:21:3 | self in positional |
 | type_tracker.rb:18:1:21:3 | self in positional | type_tracker.rb:19:5:19:11 | self |
 | type_tracker.rb:18:1:21:3 | self in positional | type_tracker.rb:20:5:20:11 | self |
-| type_tracker.rb:18:1:21:3 | synthetic *args | type_tracker.rb:18:1:21:3 | synthetic *args |
 | type_tracker.rb:18:16:18:17 | p1 | type_tracker.rb:18:16:18:17 | p1 |
 | type_tracker.rb:18:16:18:17 | p1 | type_tracker.rb:18:16:18:17 | p1 |
 | type_tracker.rb:18:16:18:17 | p1 | type_tracker.rb:18:16:18:17 | p1 |
@@ -522,7 +517,6 @@ trackEnd
 | type_tracker.rb:32:26:32:26 | 8 | type_tracker.rb:32:26:32:26 | 8 |
 | type_tracker.rb:34:1:53:3 | &block | type_tracker.rb:34:1:53:3 | &block |
 | type_tracker.rb:34:1:53:3 | self in throughArray | type_tracker.rb:34:1:53:3 | self in throughArray |
-| type_tracker.rb:34:1:53:3 | synthetic *args | type_tracker.rb:34:1:53:3 | synthetic *args |
 | type_tracker.rb:34:1:53:3 | throughArray | type_tracker.rb:34:1:53:3 | throughArray |
 | type_tracker.rb:34:18:34:20 | obj | type_tracker.rb:34:18:34:20 | obj |
 | type_tracker.rb:34:18:34:20 | obj | type_tracker.rb:34:18:34:20 | obj |