diff --git a/lisa/lisa-analyses/imp-testcases/arrays/allocations-fields/report.json b/lisa/lisa-analyses/imp-testcases/arrays/allocations-fields/report.json
new file mode 100644
index 000000000..28468fdbc
--- /dev/null
+++ b/lisa/lisa-analyses/imp-testcases/arrays/allocations-fields/report.json
@@ -0,0 +1,38 @@
+{
+  "warnings" : [ ],
+  "files" : [ "report.json", "untyped_arrays.bitest(arrays__this).json", "untyped_arrays.test(arrays__this).json" ],
+  "info" : {
+    "cfgs" : "2",
+    "duration" : "420ms",
+    "end" : "2023-09-11T19:18:34.470+02:00",
+    "expressions" : "64",
+    "files" : "2",
+    "globals" : "0",
+    "members" : "2",
+    "programs" : "1",
+    "start" : "2023-09-11T19:18:34.050+02:00",
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+    "units" : "1",
+    "version" : "0.1b8",
+    "warnings" : "0"
+  },
+  "configuration" : {
+    "analysisGraphs" : "NONE",
+    "descendingPhaseType" : "NONE",
+    "dumpForcesUnwinding" : "false",
+    "fixpointWorkingSet" : "DuplicateFreeFIFOWorkingSet",
+    "glbThreshold" : "5",
+    "hotspots" : "unset",
+    "jsonOutput" : "true",
+    "openCallPolicy" : "WorstCasePolicy",
+    "optimize" : "false",
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+    "semanticChecks" : "",
+    "serializeInputs" : "false",
+    "serializeResults" : "true",
+    "syntacticChecks" : "",
+    "useWideningPoints" : "true",
+    "wideningThreshold" : "5",
+    "workdir" : "test-outputs/arrays/allocations-fields"
+  }
+}
\ No newline at end of file
diff --git a/lisa/lisa-analyses/imp-testcases/arrays/allocations-fields/untyped_arrays.bitest(arrays__this).json b/lisa/lisa-analyses/imp-testcases/arrays/allocations-fields/untyped_arrays.bitest(arrays__this).json
new file mode 100644
index 000000000..9ecd35dfe
--- /dev/null
+++ b/lisa/lisa-analyses/imp-testcases/arrays/allocations-fields/untyped_arrays.bitest(arrays__this).json
@@ -0,0 +1 @@
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diff --git a/lisa/lisa-analyses/imp-testcases/arrays/allocations-fields/untyped_arrays.test(arrays__this).json b/lisa/lisa-analyses/imp-testcases/arrays/allocations-fields/untyped_arrays.test(arrays__this).json
new file mode 100644
index 000000000..df01e2992
--- /dev/null
+++ b/lisa/lisa-analyses/imp-testcases/arrays/allocations-fields/untyped_arrays.test(arrays__this).json
@@ -0,0 +1 @@
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diff --git a/lisa/lisa-analyses/imp-testcases/arrays/allocations/report.json b/lisa/lisa-analyses/imp-testcases/arrays/allocations/report.json
new file mode 100644
index 000000000..e40fb17c2
--- /dev/null
+++ b/lisa/lisa-analyses/imp-testcases/arrays/allocations/report.json
@@ -0,0 +1,38 @@
+{
+  "warnings" : [ ],
+  "files" : [ "report.json", "untyped_arrays.bitest(arrays__this).json", "untyped_arrays.test(arrays__this).json" ],
+  "info" : {
+    "cfgs" : "2",
+    "duration" : "62ms",
+    "end" : "2023-09-11T19:18:35.263+02:00",
+    "expressions" : "64",
+    "files" : "2",
+    "globals" : "0",
+    "members" : "2",
+    "programs" : "1",
+    "start" : "2023-09-11T19:18:35.201+02:00",
+    "statements" : "19",
+    "units" : "1",
+    "version" : "0.1b8",
+    "warnings" : "0"
+  },
+  "configuration" : {
+    "analysisGraphs" : "NONE",
+    "descendingPhaseType" : "NONE",
+    "dumpForcesUnwinding" : "false",
+    "fixpointWorkingSet" : "DuplicateFreeFIFOWorkingSet",
+    "glbThreshold" : "5",
+    "hotspots" : "unset",
+    "jsonOutput" : "true",
+    "openCallPolicy" : "WorstCasePolicy",
+    "optimize" : "false",
+    "recursionWideningThreshold" : "5",
+    "semanticChecks" : "",
+    "serializeInputs" : "false",
+    "serializeResults" : "true",
+    "syntacticChecks" : "",
+    "useWideningPoints" : "true",
+    "wideningThreshold" : "5",
+    "workdir" : "test-outputs/arrays/allocations"
+  }
+}
\ No newline at end of file
diff --git a/lisa/lisa-analyses/imp-testcases/arrays/allocations/untyped_arrays.bitest(arrays__this).json b/lisa/lisa-analyses/imp-testcases/arrays/allocations/untyped_arrays.bitest(arrays__this).json
new file mode 100644
index 000000000..95fa51068
--- /dev/null
+++ b/lisa/lisa-analyses/imp-testcases/arrays/allocations/untyped_arrays.bitest(arrays__this).json
@@ -0,0 +1 @@
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diff --git a/lisa/lisa-analyses/imp-testcases/arrays/allocations/untyped_arrays.test(arrays__this).json b/lisa/lisa-analyses/imp-testcases/arrays/allocations/untyped_arrays.test(arrays__this).json
new file mode 100644
index 000000000..6e7305d89
--- /dev/null
+++ b/lisa/lisa-analyses/imp-testcases/arrays/allocations/untyped_arrays.test(arrays__this).json
@@ -0,0 +1 @@
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diff --git a/lisa/lisa-analyses/imp-testcases/arrays/arrays.imp b/lisa/lisa-analyses/imp-testcases/arrays/arrays.imp
new file mode 100644
index 000000000..e3ece9d58
--- /dev/null
+++ b/lisa/lisa-analyses/imp-testcases/arrays/arrays.imp
@@ -0,0 +1,29 @@
+class arrays {
+
+	test() {
+		def arr = new int[5]; 
+		arr[0] = 0;
+		arr[1] = 1;
+		arr[2] = 2;
+		arr[3] = 3;
+		arr[4] = 4;
+		def x = arraylen(arr);
+		return x;
+    }
+
+	bitest() {
+		def a1 = new int[3]; 
+		a1[0] = 0;
+		a1[1] = 1;
+		a1[2] = 2;
+		
+		def a2 = new int[2]; 
+		a2[0] = 5;
+		a2[1] = 6;
+		
+		def x = arraylen(a1);
+		def y = arraylen(a2);
+		def z = x + y;
+		return z;
+    }
+}
\ No newline at end of file
diff --git a/lisa/lisa-analyses/imp-testcases/arrays/monolith/report.json b/lisa/lisa-analyses/imp-testcases/arrays/monolith/report.json
new file mode 100644
index 000000000..cf3996f0e
--- /dev/null
+++ b/lisa/lisa-analyses/imp-testcases/arrays/monolith/report.json
@@ -0,0 +1,38 @@
+{
+  "warnings" : [ ],
+  "files" : [ "report.json", "untyped_arrays.bitest(arrays__this).json", "untyped_arrays.test(arrays__this).json" ],
+  "info" : {
+    "cfgs" : "2",
+    "duration" : "32ms",
+    "end" : "2023-09-11T19:18:35.529+02:00",
+    "expressions" : "64",
+    "files" : "2",
+    "globals" : "0",
+    "members" : "2",
+    "programs" : "1",
+    "start" : "2023-09-11T19:18:35.497+02:00",
+    "statements" : "19",
+    "units" : "1",
+    "version" : "0.1b8",
+    "warnings" : "0"
+  },
+  "configuration" : {
+    "analysisGraphs" : "NONE",
+    "descendingPhaseType" : "NONE",
+    "dumpForcesUnwinding" : "false",
+    "fixpointWorkingSet" : "DuplicateFreeFIFOWorkingSet",
+    "glbThreshold" : "5",
+    "hotspots" : "unset",
+    "jsonOutput" : "true",
+    "openCallPolicy" : "WorstCasePolicy",
+    "optimize" : "false",
+    "recursionWideningThreshold" : "5",
+    "semanticChecks" : "",
+    "serializeInputs" : "false",
+    "serializeResults" : "true",
+    "syntacticChecks" : "",
+    "useWideningPoints" : "true",
+    "wideningThreshold" : "5",
+    "workdir" : "test-outputs/arrays/monolith"
+  }
+}
\ No newline at end of file
diff --git a/lisa/lisa-analyses/imp-testcases/arrays/monolith/untyped_arrays.bitest(arrays__this).json b/lisa/lisa-analyses/imp-testcases/arrays/monolith/untyped_arrays.bitest(arrays__this).json
new file mode 100644
index 000000000..f1a5b4f0d
--- /dev/null
+++ b/lisa/lisa-analyses/imp-testcases/arrays/monolith/untyped_arrays.bitest(arrays__this).json
@@ -0,0 +1 @@
+{"name":"untyped arrays::bitest(arrays* this)","description":null,"nodes":[{"id":0,"subNodes":[1,2],"text":"a1 = new int32[](3)"},{"id":1,"text":"a1"},{"id":2,"subNodes":[3],"text":"new int32[](3)"},{"id":3,"text":"3"},{"id":4,"subNodes":[5,8],"text":"[](a1, 0) = 0"},{"id":5,"subNodes":[6,7],"text":"[](a1, 0)"},{"id":6,"text":"a1"},{"id":7,"text":"0"},{"id":8,"text":"0"},{"id":9,"subNodes":[10,13],"text":"[](a1, 1) = 1"},{"id":10,"subNodes":[11,12],"text":"[](a1, 1)"},{"id":11,"text":"a1"},{"id":12,"text":"1"},{"id":13,"text":"1"},{"id":14,"subNodes":[15,18],"text":"[](a1, 2) = 2"},{"id":15,"subNodes":[16,17],"text":"[](a1, 2)"},{"id":16,"text":"a1"},{"id":17,"text":"2"},{"id":18,"text":"2"},{"id":19,"subNodes":[20,21],"text":"a2 = new int32[](2)"},{"id":20,"text":"a2"},{"id":21,"subNodes":[22],"text":"new int32[](2)"},{"id":22,"text":"2"},{"id":23,"subNodes":[24,27],"text":"[](a2, 0) = 5"},{"id":24,"subNodes":[25,26],"text":"[](a2, 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diff --git a/lisa/lisa-analyses/imp-testcases/arrays/monolith/untyped_arrays.test(arrays__this).json b/lisa/lisa-analyses/imp-testcases/arrays/monolith/untyped_arrays.test(arrays__this).json
new file mode 100644
index 000000000..5a27f08e5
--- /dev/null
+++ b/lisa/lisa-analyses/imp-testcases/arrays/monolith/untyped_arrays.test(arrays__this).json
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diff --git a/lisa/lisa-analyses/imp-testcases/heap/point-based-heap/field-insensitive/report.json b/lisa/lisa-analyses/imp-testcases/heap/point-based-heap/field-insensitive/report.json
index c0b3469e1..1e8722a82 100644
--- a/lisa/lisa-analyses/imp-testcases/heap/point-based-heap/field-insensitive/report.json
+++ b/lisa/lisa-analyses/imp-testcases/heap/point-based-heap/field-insensitive/report.json
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index b2abb60f7..18d8df993 100644
--- a/lisa/lisa-analyses/imp-testcases/heap/point-based-heap/field-insensitive/untyped_A.f1(A__this).json
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diff --git a/lisa/lisa-analyses/imp-testcases/heap/point-based-heap/field-insensitive/untyped_A.f2(A__this).json b/lisa/lisa-analyses/imp-testcases/heap/point-based-heap/field-insensitive/untyped_A.f2(A__this).json
index 8840ea512..6a6d09491 100644
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diff --git a/lisa/lisa-analyses/imp-testcases/heap/point-based-heap/field-insensitive/untyped_A.f3(A__this).json b/lisa/lisa-analyses/imp-testcases/heap/point-based-heap/field-insensitive/untyped_A.f3(A__this).json
index 806b08781..39fd3b6eb 100644
--- a/lisa/lisa-analyses/imp-testcases/heap/point-based-heap/field-insensitive/untyped_A.f3(A__this).json
+++ b/lisa/lisa-analyses/imp-testcases/heap/point-based-heap/field-insensitive/untyped_A.f3(A__this).json
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diff --git a/lisa/lisa-analyses/imp-testcases/heap/point-based-heap/field-insensitive/untyped_A.f4(A__this).json b/lisa/lisa-analyses/imp-testcases/heap/point-based-heap/field-insensitive/untyped_A.f4(A__this).json
index bb9e11528..c1ca3bc04 100644
--- a/lisa/lisa-analyses/imp-testcases/heap/point-based-heap/field-insensitive/untyped_A.f4(A__this).json
+++ b/lisa/lisa-analyses/imp-testcases/heap/point-based-heap/field-insensitive/untyped_A.f4(A__this).json
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diff --git a/lisa/lisa-analyses/imp-testcases/heap/point-based-heap/field-insensitive/untyped_A.f5(A__this).json b/lisa/lisa-analyses/imp-testcases/heap/point-based-heap/field-insensitive/untyped_A.f5(A__this).json
index 6f90050f6..1d142a436 100644
--- a/lisa/lisa-analyses/imp-testcases/heap/point-based-heap/field-insensitive/untyped_A.f5(A__this).json
+++ b/lisa/lisa-analyses/imp-testcases/heap/point-based-heap/field-insensitive/untyped_A.f5(A__this).json
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diff --git a/lisa/lisa-analyses/imp-testcases/heap/point-based-heap/field-insensitive/untyped_A.f6(A__this).json b/lisa/lisa-analyses/imp-testcases/heap/point-based-heap/field-insensitive/untyped_A.f6(A__this).json
index 1e9c5a4fd..f54605b19 100644
--- a/lisa/lisa-analyses/imp-testcases/heap/point-based-heap/field-insensitive/untyped_A.f6(A__this).json
+++ b/lisa/lisa-analyses/imp-testcases/heap/point-based-heap/field-insensitive/untyped_A.f6(A__this).json
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diff --git a/lisa/lisa-analyses/imp-testcases/heap/point-based-heap/field-insensitive/untyped_A.f7(A__this).json b/lisa/lisa-analyses/imp-testcases/heap/point-based-heap/field-insensitive/untyped_A.f7(A__this).json
index 37a130eeb..5b27f6768 100644
--- a/lisa/lisa-analyses/imp-testcases/heap/point-based-heap/field-insensitive/untyped_A.f7(A__this).json
+++ b/lisa/lisa-analyses/imp-testcases/heap/point-based-heap/field-insensitive/untyped_A.f7(A__this).json
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diff --git a/lisa/lisa-analyses/imp-testcases/heap/point-based-heap/field-insensitive/untyped_A.f8(A__this).json b/lisa/lisa-analyses/imp-testcases/heap/point-based-heap/field-insensitive/untyped_A.f8(A__this).json
index 16338185d..7b4df2e1d 100644
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+++ b/lisa/lisa-analyses/imp-testcases/heap/point-based-heap/field-insensitive/untyped_A.f8(A__this).json
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diff --git a/lisa/lisa-analyses/imp-testcases/heap/point-based-heap/field-insensitive/untyped_A.f9(A__this).json b/lisa/lisa-analyses/imp-testcases/heap/point-based-heap/field-insensitive/untyped_A.f9(A__this).json
index 5bff9515b..ff6a655b8 100644
--- a/lisa/lisa-analyses/imp-testcases/heap/point-based-heap/field-insensitive/untyped_A.f9(A__this).json
+++ b/lisa/lisa-analyses/imp-testcases/heap/point-based-heap/field-insensitive/untyped_A.f9(A__this).json
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diff --git a/lisa/lisa-analyses/imp-testcases/heap/point-based-heap/field-sensitive/report.json b/lisa/lisa-analyses/imp-testcases/heap/point-based-heap/field-sensitive/report.json
index f56bb07e5..6d52facec 100644
--- a/lisa/lisa-analyses/imp-testcases/heap/point-based-heap/field-sensitive/report.json
+++ b/lisa/lisa-analyses/imp-testcases/heap/point-based-heap/field-sensitive/report.json
@@ -3,14 +3,14 @@
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   "info" : {
     "cfgs" : "9",
-    "duration" : "229ms",
-    "end" : "2023-09-07T11:45:41.491+02:00",
+    "duration" : "131ms",
+    "end" : "2023-09-11T18:04:50.696+02:00",
     "expressions" : "143",
     "files" : "9",
     "globals" : "2",
     "members" : "9",
     "programs" : "1",
-    "start" : "2023-09-07T11:45:41.262+02:00",
+    "start" : "2023-09-11T18:04:50.565+02:00",
     "statements" : "55",
     "units" : "1",
     "version" : "0.1b8",
diff --git a/lisa/lisa-analyses/imp-testcases/heap/point-based-heap/field-sensitive/untyped_A.f1(A__this).json b/lisa/lisa-analyses/imp-testcases/heap/point-based-heap/field-sensitive/untyped_A.f1(A__this).json
index e4dba1e3f..987362619 100644
--- a/lisa/lisa-analyses/imp-testcases/heap/point-based-heap/field-sensitive/untyped_A.f1(A__this).json
+++ b/lisa/lisa-analyses/imp-testcases/heap/point-based-heap/field-sensitive/untyped_A.f1(A__this).json
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index cf2854446..86d9d24dc 100644
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diff --git a/lisa/lisa-analyses/imp-testcases/heap/point-based-heap/field-sensitive/untyped_A.f3(A__this).json b/lisa/lisa-analyses/imp-testcases/heap/point-based-heap/field-sensitive/untyped_A.f3(A__this).json
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diff --git a/lisa/lisa-analyses/imp-testcases/heap/point-based-heap/field-sensitive/untyped_A.f4(A__this).json b/lisa/lisa-analyses/imp-testcases/heap/point-based-heap/field-sensitive/untyped_A.f4(A__this).json
index ff599684e..a73f24777 100644
--- a/lisa/lisa-analyses/imp-testcases/heap/point-based-heap/field-sensitive/untyped_A.f4(A__this).json
+++ b/lisa/lisa-analyses/imp-testcases/heap/point-based-heap/field-sensitive/untyped_A.f4(A__this).json
@@ -1 +1 @@
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diff --git a/lisa/lisa-analyses/imp-testcases/heap/point-based-heap/field-sensitive/untyped_A.f5(A__this).json b/lisa/lisa-analyses/imp-testcases/heap/point-based-heap/field-sensitive/untyped_A.f5(A__this).json
index ad3b62c7f..0181bf591 100644
--- a/lisa/lisa-analyses/imp-testcases/heap/point-based-heap/field-sensitive/untyped_A.f5(A__this).json
+++ b/lisa/lisa-analyses/imp-testcases/heap/point-based-heap/field-sensitive/untyped_A.f5(A__this).json
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diff --git a/lisa/lisa-analyses/imp-testcases/heap/point-based-heap/field-sensitive/untyped_A.f6(A__this).json b/lisa/lisa-analyses/imp-testcases/heap/point-based-heap/field-sensitive/untyped_A.f6(A__this).json
index e081a16f6..6980d8751 100644
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index fffe3bd5d..bf35516cb 100644
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index 746d12201..16adb538e 100644
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diff --git a/lisa/lisa-analyses/imp-testcases/heap/point-based-heap/field-sensitive/untyped_A.f9(A__this).json b/lisa/lisa-analyses/imp-testcases/heap/point-based-heap/field-sensitive/untyped_A.f9(A__this).json
index 48a292130..3399b62c3 100644
--- a/lisa/lisa-analyses/imp-testcases/heap/point-based-heap/field-sensitive/untyped_A.f9(A__this).json
+++ b/lisa/lisa-analyses/imp-testcases/heap/point-based-heap/field-sensitive/untyped_A.f9(A__this).json
@@ -1 +1 @@
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index bea91502a..7d17f3371 100644
--- a/lisa/lisa-analyses/imp-testcases/interprocedural/RTAContextSensitive5/report.json
+++ b/lisa/lisa-analyses/imp-testcases/interprocedural/RTAContextSensitive5/report.json
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-    "end" : "2023-09-07T11:45:45.013+02:00",
+    "duration" : "159ms",
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-    "start" : "2023-09-07T11:45:44.918+02:00",
+    "start" : "2023-09-11T18:04:46.064+02:00",
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index 8168556a1..0b0a5873f 100644
--- a/lisa/lisa-analyses/imp-testcases/interprocedural/RTAContextSensitive5/untyped_A.build(A__this,_untyped_a,_untyped_b,_untyped_c)_1680644876.json
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diff --git a/lisa/lisa-analyses/imp-testcases/interprocedural/RTAContextSensitive5/untyped_A.build(A__this,_untyped_a,_untyped_b,_untyped_c)_1680645868.json b/lisa/lisa-analyses/imp-testcases/interprocedural/RTAContextSensitive5/untyped_A.build(A__this,_untyped_a,_untyped_b,_untyped_c)_1680645868.json
index e41949970..603ec9762 100644
--- a/lisa/lisa-analyses/imp-testcases/interprocedural/RTAContextSensitive5/untyped_A.build(A__this,_untyped_a,_untyped_b,_untyped_c)_1680645868.json
+++ b/lisa/lisa-analyses/imp-testcases/interprocedural/RTAContextSensitive5/untyped_A.build(A__this,_untyped_a,_untyped_b,_untyped_c)_1680645868.json
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diff --git a/lisa/lisa-analyses/imp-testcases/interprocedural/RTAContextSensitive5/untyped_A.identity(A__this,_untyped_x)_1680635948.json b/lisa/lisa-analyses/imp-testcases/interprocedural/RTAContextSensitive5/untyped_A.identity(A__this,_untyped_x)_1680635948.json
index 2443c57c0..efa734289 100644
--- a/lisa/lisa-analyses/imp-testcases/interprocedural/RTAContextSensitive5/untyped_A.identity(A__this,_untyped_x)_1680635948.json
+++ b/lisa/lisa-analyses/imp-testcases/interprocedural/RTAContextSensitive5/untyped_A.identity(A__this,_untyped_x)_1680635948.json
@@ -1 +1 @@
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diff --git a/lisa/lisa-analyses/imp-testcases/interprocedural/RTAContextSensitive5/untyped_A.main(A__this).json b/lisa/lisa-analyses/imp-testcases/interprocedural/RTAContextSensitive5/untyped_A.main(A__this).json
index ac6101c38..c739cf6f2 100644
--- a/lisa/lisa-analyses/imp-testcases/interprocedural/RTAContextSensitive5/untyped_A.main(A__this).json
+++ b/lisa/lisa-analyses/imp-testcases/interprocedural/RTAContextSensitive5/untyped_A.main(A__this).json
@@ -1 +1 @@
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index f73f31507..c5087d7e4 100644
--- a/lisa/lisa-analyses/imp-testcases/interprocedural/RTAContextSensitive6/report.json
+++ b/lisa/lisa-analyses/imp-testcases/interprocedural/RTAContextSensitive6/report.json
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+    "duration" : "43ms",
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-    "start" : "2023-09-07T11:45:45.284+02:00",
+    "start" : "2023-09-11T18:04:46.695+02:00",
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diff --git a/lisa/lisa-analyses/imp-testcases/interprocedural/RTAContextSensitive6/untyped_A.build(A__this,_untyped_a)_1681564491.json b/lisa/lisa-analyses/imp-testcases/interprocedural/RTAContextSensitive6/untyped_A.build(A__this,_untyped_a)_1681564491.json
index 9cdfaafa5..3c4eea89c 100644
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diff --git a/lisa/lisa-analyses/imp-testcases/interprocedural/RTAContextSensitive6/untyped_A.main(A__this).json b/lisa/lisa-analyses/imp-testcases/interprocedural/RTAContextSensitive6/untyped_A.main(A__this).json
index 5a02d26b2..e0071b259 100644
--- a/lisa/lisa-analyses/imp-testcases/interprocedural/RTAContextSensitive6/untyped_A.main(A__this).json
+++ b/lisa/lisa-analyses/imp-testcases/interprocedural/RTAContextSensitive6/untyped_A.main(A__this).json
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diff --git a/lisa/lisa-analyses/imp-testcases/interprocedural/RTAContextSensitive6/untyped_A.plusOne(A__this,_untyped_x)_1681558446.json b/lisa/lisa-analyses/imp-testcases/interprocedural/RTAContextSensitive6/untyped_A.plusOne(A__this,_untyped_x)_1681558446.json
index 78056206f..e3dbd04cd 100644
--- a/lisa/lisa-analyses/imp-testcases/interprocedural/RTAContextSensitive6/untyped_A.plusOne(A__this,_untyped_x)_1681558446.json
+++ b/lisa/lisa-analyses/imp-testcases/interprocedural/RTAContextSensitive6/untyped_A.plusOne(A__this,_untyped_x)_1681558446.json
@@ -1 +1 @@
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diff --git a/lisa/lisa-analyses/src/test/java/it/unive/lisa/cron/ArraysTest.java b/lisa/lisa-analyses/src/test/java/it/unive/lisa/cron/ArraysTest.java
new file mode 100644
index 000000000..7749fa5df
--- /dev/null
+++ b/lisa/lisa-analyses/src/test/java/it/unive/lisa/cron/ArraysTest.java
@@ -0,0 +1,55 @@
+package it.unive.lisa.cron;
+
+import it.unive.lisa.AnalysisSetupException;
+import it.unive.lisa.AnalysisTestExecutor;
+import it.unive.lisa.CronConfiguration;
+import it.unive.lisa.DefaultConfiguration;
+import it.unive.lisa.analysis.heap.MonolithicHeap;
+import it.unive.lisa.analysis.heap.pointbased.FieldSensitivePointBasedHeap;
+import it.unive.lisa.analysis.heap.pointbased.PointBasedHeap;
+import org.junit.Test;
+
+public class ArraysTest extends AnalysisTestExecutor {
+
+	@Test
+	public void monolithTest() throws AnalysisSetupException {
+		CronConfiguration conf = new CronConfiguration();
+		conf.serializeResults = true;
+		conf.abstractState = DefaultConfiguration.simpleState(
+				new MonolithicHeap(),
+				DefaultConfiguration.defaultValueDomain(),
+				DefaultConfiguration.defaultTypeDomain());
+		conf.testDir = "arrays";
+		conf.testSubDir = "monolith";
+		conf.programFile = "arrays.imp";
+		perform(conf);
+	}
+
+	@Test
+	public void fieldInsensitiveTest() throws AnalysisSetupException {
+		CronConfiguration conf = new CronConfiguration();
+		conf.serializeResults = true;
+		conf.abstractState = DefaultConfiguration.simpleState(
+				new PointBasedHeap(),
+				DefaultConfiguration.defaultValueDomain(),
+				DefaultConfiguration.defaultTypeDomain());
+		conf.testDir = "arrays";
+		conf.testSubDir = "allocations";
+		conf.programFile = "arrays.imp";
+		perform(conf);
+	}
+
+	@Test
+	public void fieldSensitiveTest() throws AnalysisSetupException {
+		CronConfiguration conf = new CronConfiguration();
+		conf.serializeResults = true;
+		conf.abstractState = DefaultConfiguration.simpleState(
+				new FieldSensitivePointBasedHeap(),
+				DefaultConfiguration.defaultValueDomain(),
+				DefaultConfiguration.defaultTypeDomain());
+		conf.testDir = "arrays";
+		conf.testSubDir = "allocations-fields";
+		conf.programFile = "arrays.imp";
+		perform(conf);
+	}
+}
diff --git a/lisa/lisa-imp/example.imp b/lisa/lisa-imp/example.imp
index 6b6ccd460..c4f9627d6 100644
--- a/lisa/lisa-imp/example.imp
+++ b/lisa/lisa-imp/example.imp
@@ -164,6 +164,10 @@ class example {
 		strindex("x", "y"); // yield the index of the first occourrence of the second string into the first one
 		strrep("x", "y", "z"); // replace all occurrences of the second string inside the first one with the third string
 		strsub("x", 0, 1); // yield the substring of the string, from the first integer (inclusive) to the second one (exclusive)
+		
+		
+		// array operations directly supported (i.e., not in the form of receiver.method(params))
+		arraylen(x); // yields the length of the array
 	}
 	
 	// methods can be final to avoid overriding by subclasses
diff --git a/lisa/lisa-imp/src/main/antlr/IMPLexer.g4 b/lisa/lisa-imp/src/main/antlr/IMPLexer.g4
index d27abcc13..c6b6f0dcc 100644
--- a/lisa/lisa-imp/src/main/antlr/IMPLexer.g4
+++ b/lisa/lisa-imp/src/main/antlr/IMPLexer.g4
@@ -143,6 +143,11 @@ STRSTARTS
 STRSUB
    : 'strsub'
    ;
+   // =========================== ARRAY FUNCTIONS =========================== 
+   
+ARRAYLEN
+   : 'arraylen'
+   ;
    // =========================== LITERALS ===========================  
    
 LITERAL_DECIMAL
diff --git a/lisa/lisa-imp/src/main/antlr/IMPParser.g4 b/lisa/lisa-imp/src/main/antlr/IMPParser.g4
index 44fd5273c..a7786aef9 100644
--- a/lisa/lisa-imp/src/main/antlr/IMPParser.g4
+++ b/lisa/lisa-imp/src/main/antlr/IMPParser.g4
@@ -93,6 +93,7 @@ expression
    | methodCall
    | assignment
    | stringExpr
+   | arrayExpr
    ;
 
 basicExpr
@@ -160,6 +161,10 @@ ternaryStringExpr
    : STRREPLACE LPAREN left = expression COMMA middle = expression COMMA right = expression RPAREN
    | STRSUB LPAREN left = expression COMMA middle = expression COMMA right = expression RPAREN
    ;
+
+arrayExpr
+   : ARRAYLEN LPAREN op = expression RPAREN
+   ;
 /*
  * STATEMENT
  */
diff --git a/lisa/lisa-imp/src/main/java/it/unive/lisa/imp/IMPCodeMemberVisitor.java b/lisa/lisa-imp/src/main/java/it/unive/lisa/imp/IMPCodeMemberVisitor.java
index e33e5ec39..7cf16744f 100644
--- a/lisa/lisa-imp/src/main/java/it/unive/lisa/imp/IMPCodeMemberVisitor.java
+++ b/lisa/lisa-imp/src/main/java/it/unive/lisa/imp/IMPCodeMemberVisitor.java
@@ -7,6 +7,7 @@
 import it.unive.lisa.imp.antlr.IMPParser.ArgumentsContext;
 import it.unive.lisa.imp.antlr.IMPParser.ArrayAccessContext;
 import it.unive.lisa.imp.antlr.IMPParser.ArrayCreatorRestContext;
+import it.unive.lisa.imp.antlr.IMPParser.ArrayExprContext;
 import it.unive.lisa.imp.antlr.IMPParser.AssignmentContext;
 import it.unive.lisa.imp.antlr.IMPParser.BasicExprContext;
 import it.unive.lisa.imp.antlr.IMPParser.BinaryStringExprContext;
@@ -31,6 +32,7 @@
 import it.unive.lisa.imp.antlr.IMPParser.UnaryStringExprContext;
 import it.unive.lisa.imp.antlr.IMPParser.WhileLoopContext;
 import it.unive.lisa.imp.antlr.IMPParserBaseVisitor;
+import it.unive.lisa.imp.constructs.ArrayLength;
 import it.unive.lisa.imp.constructs.StringConcat;
 import it.unive.lisa.imp.constructs.StringContains;
 import it.unive.lisa.imp.constructs.StringEndsWith;
@@ -551,6 +553,8 @@ else if (ctx.methodCall() != null)
 			return visitMethodCall(ctx.methodCall());
 		else if (ctx.stringExpr() != null)
 			return visitStringExpr(ctx.stringExpr());
+		else if (ctx.arrayExpr() != null)
+			return visitArrayExpr(ctx.arrayExpr());
 
 		throw new UnsupportedOperationException("Type of expression not supported: " + ctx);
 	}
@@ -574,6 +578,11 @@ else if (ctx.ternaryStringExpr() != null)
 		return returned;
 	}
 
+	@Override
+	public Expression visitArrayExpr(ArrayExprContext ctx) {
+		return new ArrayLength.IMPArrayLength(cfg, file, getLine(ctx), getCol(ctx), visitExpression(ctx.op));
+	}
+
 	@Override
 	public Expression visitUnaryStringExpr(UnaryStringExprContext ctx) {
 		if (ctx.STRLEN() != null)
diff --git a/lisa/lisa-imp/src/main/java/it/unive/lisa/imp/IMPFrontend.java b/lisa/lisa-imp/src/main/java/it/unive/lisa/imp/IMPFrontend.java
index fa41937f7..265e8c85a 100644
--- a/lisa/lisa-imp/src/main/java/it/unive/lisa/imp/IMPFrontend.java
+++ b/lisa/lisa-imp/src/main/java/it/unive/lisa/imp/IMPFrontend.java
@@ -19,6 +19,7 @@
 import it.unive.lisa.imp.antlr.IMPParser.UnitContext;
 import it.unive.lisa.imp.antlr.IMPParser.UnitNameContext;
 import it.unive.lisa.imp.antlr.IMPParserBaseVisitor;
+import it.unive.lisa.imp.constructs.ArrayLength;
 import it.unive.lisa.imp.constructs.StringContains;
 import it.unive.lisa.imp.constructs.StringEndsWith;
 import it.unive.lisa.imp.constructs.StringEquals;
@@ -215,6 +216,7 @@ private Program work(InputStream inputStream) throws ParsingException {
 			str.addInstanceCodeMember(new StringReplace(unknownLocation, str));
 			str.addInstanceCodeMember(new StringStartsWith(unknownLocation, str));
 			str.addInstanceCodeMember(new StringSubstring(unknownLocation, str));
+			str.addInstanceCodeMember(new ArrayLength(unknownLocation, program));
 
 			// register all possible types
 			p.getTypes().registerType(BoolType.INSTANCE);
diff --git a/lisa/lisa-imp/src/main/java/it/unive/lisa/imp/constructs/ArrayLength.java b/lisa/lisa-imp/src/main/java/it/unive/lisa/imp/constructs/ArrayLength.java
new file mode 100644
index 000000000..58463ec39
--- /dev/null
+++ b/lisa/lisa-imp/src/main/java/it/unive/lisa/imp/constructs/ArrayLength.java
@@ -0,0 +1,135 @@
+package it.unive.lisa.imp.constructs;
+
+import it.unive.lisa.analysis.AbstractState;
+import it.unive.lisa.analysis.AnalysisState;
+import it.unive.lisa.analysis.SemanticException;
+import it.unive.lisa.analysis.StatementStore;
+import it.unive.lisa.interprocedural.InterproceduralAnalysis;
+import it.unive.lisa.program.Program;
+import it.unive.lisa.program.SourceCodeLocation;
+import it.unive.lisa.program.cfg.CFG;
+import it.unive.lisa.program.cfg.CodeLocation;
+import it.unive.lisa.program.cfg.CodeMemberDescriptor;
+import it.unive.lisa.program.cfg.NativeCFG;
+import it.unive.lisa.program.cfg.Parameter;
+import it.unive.lisa.program.cfg.statement.Expression;
+import it.unive.lisa.program.cfg.statement.PluggableStatement;
+import it.unive.lisa.program.cfg.statement.Statement;
+import it.unive.lisa.program.cfg.statement.UnaryExpression;
+import it.unive.lisa.program.type.Int32Type;
+import it.unive.lisa.symbolic.SymbolicExpression;
+import it.unive.lisa.symbolic.heap.AccessChild;
+import it.unive.lisa.symbolic.heap.HeapDereference;
+import it.unive.lisa.symbolic.value.Variable;
+import it.unive.lisa.type.ArrayType;
+import it.unive.lisa.type.Type;
+import it.unive.lisa.type.TypeSystem;
+import it.unive.lisa.type.Untyped;
+import java.util.HashSet;
+import java.util.Set;
+
+/**
+ * The native construct representing the array length operation. This construct
+ * can be invoked on an array variable {@code x} with {@code arraylen(x)}.
+ * 
+ * @author <a href="mailto:luca.negrini@unive.it">Luca Negrini</a>
+ */
+public class ArrayLength extends NativeCFG {
+
+	/**
+	 * Builds the construct.
+	 * 
+	 * @param location the location where this construct is defined
+	 * @param program  the program of the analysis
+	 */
+	public ArrayLength(CodeLocation location, Program program) {
+		super(new CodeMemberDescriptor(location, program, false, "arraylen", Int32Type.INSTANCE,
+				new Parameter(location, "a", Untyped.INSTANCE)),
+				IMPArrayLength.class);
+	}
+
+	/**
+	 * An expression modeling the array length operation. The type of the
+	 * operand must be {@link ArrayType}. The type of this expression is the
+	 * {@link Int32Type}.
+	 * 
+	 * @author <a href="mailto:luca.negrini@unive.it">Luca Negrini</a>
+	 */
+	public static class IMPArrayLength extends UnaryExpression implements PluggableStatement {
+
+		/**
+		 * The statement that originated this one.
+		 */
+		protected Statement originating;
+
+		/**
+		 * Builds a new instance of this native call, according to the
+		 * {@link PluggableStatement} contract.
+		 * 
+		 * @param cfg      the cfg where the native call happens
+		 * @param location the location where the native call happens
+		 * @param params   the parameters of the native call
+		 * 
+		 * @return the newly-built call
+		 */
+		public static IMPArrayLength build(CFG cfg, CodeLocation location, Expression... params) {
+			return new IMPArrayLength(cfg, location, params[0]);
+		}
+
+		@Override
+		public void setOriginatingStatement(Statement st) {
+			originating = st;
+		}
+
+		/**
+		 * Builds the length.
+		 * 
+		 * @param cfg        the {@link CFG} where this operation lies
+		 * @param sourceFile the source file name where this operation is
+		 *                       defined
+		 * @param line       the line number where this operation is defined
+		 * @param col        the column where this operation is defined
+		 * @param parameter  the operand of this operation
+		 */
+		public IMPArrayLength(CFG cfg, String sourceFile, int line, int col,
+				Expression parameter) {
+			this(cfg, new SourceCodeLocation(sourceFile, line, col), parameter);
+		}
+
+		/**
+		 * Builds the length.
+		 * 
+		 * @param cfg       the {@link CFG} where this operation lies
+		 * @param location  the code location where this operation is defined
+		 * @param parameter the operand of this operation
+		 */
+		public IMPArrayLength(CFG cfg, CodeLocation location, Expression parameter) {
+			super(cfg, location, "arraylen", parameter);
+		}
+
+		@Override
+		public <A extends AbstractState<A>> AnalysisState<A> unarySemantics(InterproceduralAnalysis<A> interprocedural,
+				AnalysisState<A> state, SymbolicExpression expr, StatementStore<A> expressions)
+				throws SemanticException {
+			Set<Type> arraytypes = new HashSet<>();
+			TypeSystem types = getProgram().getTypes();
+			for (Type t : expr.getRuntimeTypes(types))
+				if (t.isPointerType() && t.asPointerType().getInnerType().isArrayType())
+					arraytypes.add(t.asPointerType().getInnerType());
+
+			if (arraytypes.isEmpty())
+				return state.bottom();
+
+			ArrayType arraytype = Type.commonSupertype(arraytypes, getStaticType()).asArrayType();
+			HeapDereference container = new HeapDereference(arraytype, expr, getLocation());
+			container.setRuntimeTypes(arraytypes);
+			AccessChild len = new AccessChild(
+					Int32Type.INSTANCE,
+					container,
+					new Variable(Untyped.INSTANCE, "len", getLocation()),
+					getLocation());
+
+			return state.smallStepSemantics(len, this);
+		}
+	}
+}
\ No newline at end of file
diff --git a/lisa/lisa-imp/src/main/java/it/unive/lisa/imp/expressions/IMPArrayAccess.java b/lisa/lisa-imp/src/main/java/it/unive/lisa/imp/expressions/IMPArrayAccess.java
index 1897d7dcc..55e881d33 100644
--- a/lisa/lisa-imp/src/main/java/it/unive/lisa/imp/expressions/IMPArrayAccess.java
+++ b/lisa/lisa-imp/src/main/java/it/unive/lisa/imp/expressions/IMPArrayAccess.java
@@ -54,7 +54,7 @@ public <A extends AbstractState<A>> AnalysisState<A> binarySemantics(
 		TypeSystem types = getProgram().getTypes();
 		for (Type t : left.getRuntimeTypes(types))
 			if (t.isPointerType() && t.asPointerType().getInnerType().isArrayType())
-				arraytypes.add(t.asPointerType().getInnerType().asArrayType());
+				arraytypes.add(t.asPointerType().getInnerType());
 
 		if (arraytypes.isEmpty())
 			return state.bottom();
@@ -62,8 +62,12 @@ public <A extends AbstractState<A>> AnalysisState<A> binarySemantics(
 		ArrayType arraytype = Type.commonSupertype(arraytypes, getStaticType()).asArrayType();
 		HeapDereference container = new HeapDereference(arraytype, left, getLocation());
 		container.setRuntimeTypes(arraytypes);
+		AccessChild elem = new AccessChild(
+				arraytype.getInnerType(),
+				container,
+				right,
+				getLocation());
 
-		return state.smallStepSemantics(new AccessChild(arraytype.getInnerType(), container, right, getLocation()),
-				this);
+		return state.smallStepSemantics(elem, this);
 	}
 }
diff --git a/lisa/lisa-imp/src/main/java/it/unive/lisa/imp/expressions/IMPNewArray.java b/lisa/lisa-imp/src/main/java/it/unive/lisa/imp/expressions/IMPNewArray.java
index b1791a3c3..608a8353f 100644
--- a/lisa/lisa-imp/src/main/java/it/unive/lisa/imp/expressions/IMPNewArray.java
+++ b/lisa/lisa-imp/src/main/java/it/unive/lisa/imp/expressions/IMPNewArray.java
@@ -11,11 +11,15 @@
 import it.unive.lisa.program.cfg.CFG;
 import it.unive.lisa.program.cfg.statement.Expression;
 import it.unive.lisa.program.cfg.statement.NaryExpression;
+import it.unive.lisa.program.type.Int32Type;
 import it.unive.lisa.symbolic.SymbolicExpression;
+import it.unive.lisa.symbolic.heap.AccessChild;
 import it.unive.lisa.symbolic.heap.HeapReference;
 import it.unive.lisa.symbolic.heap.MemoryAllocation;
+import it.unive.lisa.symbolic.value.Variable;
 import it.unive.lisa.type.ReferenceType;
 import it.unive.lisa.type.Type;
+import it.unive.lisa.type.Untyped;
 import java.util.Objects;
 
 /**
@@ -47,6 +51,8 @@ public IMPNewArray(CFG cfg, String sourceFile, int line, int col, Type type, boo
 			Expression[] dimensions) {
 		super(cfg, new SourceCodeLocation(sourceFile, line, col), (staticallyAllocated ? "" : "new ") + type + "[]",
 				ArrayType.lookup(type, dimensions.length), dimensions);
+		if (dimensions.length != 1)
+			throw new UnsupportedOperationException("Multidimensional arrays are not yet supported");
 		this.staticallyAllocated = staticallyAllocated;
 	}
 
@@ -57,18 +63,35 @@ public <A extends AbstractState<A>> AnalysisState<A> expressionSemantics(
 			ExpressionSet[] params,
 			StatementStore<A> expressions)
 			throws SemanticException {
-		MemoryAllocation alloc = new MemoryAllocation(getStaticType(), getLocation(), staticallyAllocated);
-		AnalysisState<A> sem = state.smallStepSemantics(alloc, this);
+		Type type = getStaticType();
+		MemoryAllocation alloc = new MemoryAllocation(type, getLocation(), staticallyAllocated);
+		AnalysisState<A> allocSt = state.smallStepSemantics(alloc, this);
+		ExpressionSet allocExps = allocSt.getComputedExpressions();
 
-		AnalysisState<A> result = state.bottom();
-		for (SymbolicExpression loc : sem.getComputedExpressions()) {
-			ReferenceType staticType = new ReferenceType(loc.getStaticType());
-			HeapReference ref = new HeapReference(staticType, loc, getLocation());
-			AnalysisState<A> refSem = sem.smallStepSemantics(ref, this);
-			result = result.lub(refSem);
+		AnalysisState<A> initSt = state.bottom();
+		for (SymbolicExpression allocExp : allocExps) {
+			AccessChild len = new AccessChild(
+					Int32Type.INSTANCE,
+					allocExp,
+					new Variable(Untyped.INSTANCE, "len", getLocation()),
+					getLocation());
+
+			AnalysisState<A> lenSt = state.bottom();
+			// TODO fix when we'll support multidimensional arrays
+			for (SymbolicExpression dim : params[0])
+				lenSt = lenSt.lub(allocSt.assign(len, dim, this));
+			initSt = initSt.lub(lenSt);
 		}
 
-		return result;
+		AnalysisState<A> refSt = state.bottom();
+		for (SymbolicExpression loc : allocSt.getComputedExpressions()) {
+			ReferenceType t = new ReferenceType(loc.getStaticType());
+			HeapReference ref = new HeapReference(t, loc, getLocation());
+			AnalysisState<A> refSem = initSt.smallStepSemantics(ref, this);
+			refSt = refSt.lub(refSem);
+		}
+
+		return refSt;
 	}
 
 	@Override
diff --git a/lisa/lisa-imp/src/main/java/it/unive/lisa/imp/types/ArrayType.java b/lisa/lisa-imp/src/main/java/it/unive/lisa/imp/types/ArrayType.java
index 6be6b0930..fb9140444 100644
--- a/lisa/lisa-imp/src/main/java/it/unive/lisa/imp/types/ArrayType.java
+++ b/lisa/lisa-imp/src/main/java/it/unive/lisa/imp/types/ArrayType.java
@@ -133,6 +133,11 @@ public Type getBaseType() {
 		return base;
 	}
 
+	@Override
+	public int getDimensions() {
+		return dimensions;
+	}
+
 	@Override
 	public Set<Type> allInstances(TypeSystem types) {
 		return Collections.singleton(this);
diff --git a/lisa/lisa-sdk/src/main/java/it/unive/lisa/analysis/AnalysisState.java b/lisa/lisa-sdk/src/main/java/it/unive/lisa/analysis/AnalysisState.java
index bc442c9a1..2fdc80e2c 100644
--- a/lisa/lisa-sdk/src/main/java/it/unive/lisa/analysis/AnalysisState.java
+++ b/lisa/lisa-sdk/src/main/java/it/unive/lisa/analysis/AnalysisState.java
@@ -316,7 +316,7 @@ public AnalysisState<A> narrowingAux(AnalysisState<A> other) throws SemanticExce
 	public boolean lessOrEqualAux(AnalysisState<A> other) throws SemanticException {
 		return state.lessOrEqual(other.state)
 				&& computedExpressions.lessOrEqual(other.computedExpressions)
-				&& info == null ? true : info.lessOrEqual(other.info);
+				&& (info == null ? true : info.lessOrEqual(other.info));
 	}
 
 	@Override
diff --git a/lisa/lisa-sdk/src/main/java/it/unive/lisa/type/ArrayType.java b/lisa/lisa-sdk/src/main/java/it/unive/lisa/type/ArrayType.java
index 8c1593326..76da66a0e 100644
--- a/lisa/lisa-sdk/src/main/java/it/unive/lisa/type/ArrayType.java
+++ b/lisa/lisa-sdk/src/main/java/it/unive/lisa/type/ArrayType.java
@@ -25,4 +25,13 @@ public interface ArrayType extends InMemoryType {
 	 * @return the base type of this array type
 	 */
 	Type getBaseType();
+
+	/**
+	 * Yields the dimensions of this array type. For instance, if this type
+	 * represents {@code int[]}, this method will return {@code 1}. Instead, if
+	 * this type represents {@code int[][]}, this method will return {@code 2}.
+	 * 
+	 * @return the dimensions of this array type
+	 */
+	int getDimensions();
 }