diff --git a/CityDoctorParent/CityDoctorEdge/src/main/java/de/hft/stuttgart/citydoctor2/edge/PolyLine.java b/CityDoctorParent/CityDoctorEdge/src/main/java/de/hft/stuttgart/citydoctor2/edge/PolyLine.java
index dff20ee2f6e4f8c0d0efc3ffe6ce35b6d18ac92f..5cea520a3e2673e08e3b537611f8977d7dc7e05f 100644
--- a/CityDoctorParent/CityDoctorEdge/src/main/java/de/hft/stuttgart/citydoctor2/edge/PolyLine.java
+++ b/CityDoctorParent/CityDoctorEdge/src/main/java/de/hft/stuttgart/citydoctor2/edge/PolyLine.java
@@ -78,21 +78,21 @@ public class PolyLine extends BaseEntity {
 		return mpLast;
 	}
 	
-	public Boolean isNullLine() {
+	public boolean isNullLine() {
 		return isNullLine(0.00);
 	}
 	
 	
-	public Boolean isNullLine(Double tolerance) {
+	public boolean isNullLine(double tolerance) {
 		// If either start or end Segment is null, return immediately
 		if (mpFirst == null || mpLast == null) {
 			return true;
 		}
 		PolyLineSegment currentSegment = mpFirst;
-		Double length = 0.00;
+		double length = 0.00;
 		// Add length of all segments, starting from mpFirst
 		do {
-			Double segmentLength = currentSegment.getLengthVector().getLength();
+			double segmentLength = currentSegment.getLengthVector().getLength();
 			if (segmentLength > tolerance) {
 				length += segmentLength;
 			}
@@ -103,15 +103,13 @@ public class PolyLine extends BaseEntity {
 			
 		} while (currentSegment.getNext() != null);
 		// Since mpLast will be missed due to loop condition add its length afterwards 
-		Double segmentLength = mpLast.getLengthVector().getLength();
+		double segmentLength = mpLast.getLengthVector().getLength();
 		if (segmentLength > tolerance) {
 			length += segmentLength;
 		}
 		// Check if total length is less than the set tolerance 
-		if (length <= tolerance) {
-			return true;
-		}
-		return false;
+		return length <= tolerance;
+		
 		
 	}
 
diff --git a/CityDoctorParent/CityDoctorEdge/src/main/java/de/hft/stuttgart/citydoctor2/edge/PolyLineSegment.java b/CityDoctorParent/CityDoctorEdge/src/main/java/de/hft/stuttgart/citydoctor2/edge/PolyLineSegment.java
index 5af8039ab56e4abaf8b4f862b1984fb02887d0a8..fd69514259e2a9cf5845526e8e625a2a9fe0058f 100644
--- a/CityDoctorParent/CityDoctorEdge/src/main/java/de/hft/stuttgart/citydoctor2/edge/PolyLineSegment.java
+++ b/CityDoctorParent/CityDoctorEdge/src/main/java/de/hft/stuttgart/citydoctor2/edge/PolyLineSegment.java
@@ -59,8 +59,7 @@ public class PolyLineSegment extends BaseEntity {
 	}
 	
 	public Vector3d getLengthVector() {
-		Vector3d representation = mpEnd.getPoint().minus(mpStart.getPoint());
-		return representation;
+		return mpEnd.getPoint().minus(mpStart.getPoint());
 	}
 
 	@Override
diff --git a/CityDoctorParent/CityDoctorValidation/src/test/java/de/hft/stuttgart/citydoctor2/checks/geometry/SolidSelfIntCheckTest.java b/CityDoctorParent/CityDoctorValidation/src/test/java/de/hft/stuttgart/citydoctor2/checks/geometry/SolidSelfIntCheckTest.java
index f4b3a2155a7f1856688c6b3d75b2d7a87bf4e4d6..e6cff8ebc9bd37a7ed77c1f1edef0ce0afe1e43a 100644
--- a/CityDoctorParent/CityDoctorValidation/src/test/java/de/hft/stuttgart/citydoctor2/checks/geometry/SolidSelfIntCheckTest.java
+++ b/CityDoctorParent/CityDoctorValidation/src/test/java/de/hft/stuttgart/citydoctor2/checks/geometry/SolidSelfIntCheckTest.java
@@ -21,14 +21,8 @@ package de.hft.stuttgart.citydoctor2.checks.geometry;
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertNotNull;
-import static org.junit.Assert.assertTrue;
 
-import java.util.ArrayList;
-import java.util.List;
-
-import org.apache.logging.log4j.core.util.internal.Status;
 import org.junit.Assert;
-import org.junit.Ignore;
 import org.junit.Test;
 
 import de.hft.stuttgart.citydoctor2.check.CheckResult;
@@ -84,16 +78,20 @@ public class SolidSelfIntCheckTest {
 		assertFalse(m.getBuildings().get(0).containsAnyError());
 	}
 	
-	@Test
-	public void testKnownFalsePositiveExample1() throws CityGmlParseException, InvalidGmlFileException {
+	
+	private void testFalsePositiveExample(String gml_filepath) throws CityGmlParseException, InvalidGmlFileException {
 		ValidationConfiguration config = ValidationConfiguration.loadStandardValidationConfig();
 		config.setSchematronFilePathInGlobalParameters(null);
-		CityDoctorModel m = CityGmlParser.parseCityGmlFile("src/test/resources/SolidSelfIntTest-known_false_positive1.gml", config.getParserConfiguration());
+		CityDoctorModel m = CityGmlParser.parseCityGmlFile(gml_filepath, config.getParserConfiguration());
 		Checker c = new Checker(config, m);
 		c.runChecks();
 		Building building = m.getBuildings().get(0);
 		System.out.println(building.containsAnyError());
-		// Example1 Building has some BuildingInstallations, which throw semantic errors
+		/*
+		 *  The examples have no actual self-intersections, but can contain other actual model defects.
+		 *  If an error is detected, it is thus required to check if the
+		 *   False-Positive self-intersection triggered it.
+		 */
 		if (building.containsAnyError()) {	
 			Geometry buildingGeom = building.getGeometry(GeometryType.SOLID, Lod.LOD2);
 			buildingGeom.clearCheckResults();
@@ -101,83 +99,22 @@ public class SolidSelfIntCheckTest {
 			check.check(buildingGeom);
 			CheckResult cr = buildingGeom.getCheckResult(check);
 			assertNotNull(cr);
-			//Ensure that checker did not find a self intersection
+			//Ensure that the found error is not a self-intersection error
 			assertEquals("Known False-Positive self-intersection was detected as error", ResultStatus.OK, cr.getResultStatus());
 		} 
-		
-		
 	}
 	
 	@Test
-	public void testKnownFalsePositiveExample2() throws CityGmlParseException, InvalidGmlFileException {
-		ValidationConfiguration config = ValidationConfiguration.loadStandardValidationConfig();
-		config.setSchematronFilePathInGlobalParameters(null);
-		CityDoctorModel m = CityGmlParser.parseCityGmlFile("src/test/resources/SolidSelfIntTest-known_false_positive2.gml", config.getParserConfiguration());
-		Checker c = new Checker(config, m);
-		c.runChecks();
-		Building building = m.getBuildings().get(0);
-		// If an error was found, check if error is SolidSelfInt
-		if (building.containsAnyError()) {	
-			Geometry buildingGeom = building.getGeometry(GeometryType.SOLID, Lod.LOD2);
-			buildingGeom.clearCheckResults();
-			SolidSelfIntCheck check = new SolidSelfIntCheck();
-			check.check(buildingGeom);
-			CheckResult cr = buildingGeom.getCheckResult(check);
-			assertNotNull(cr);
-			//Ensure that checker did not find the false-positive self intersection
-			assertEquals("Known False-Positive self-intersection was detected as error", ResultStatus.OK, cr.getResultStatus());
-		} 
-		
-		
+	public void testKnownFalsePositiveExample1() throws CityGmlParseException, InvalidGmlFileException {
+		testFalsePositiveExample("src/test/resources/SolidSelfIntTest-known_false_positive1.gml");	
 	}
 	
-	@Ignore("Only run this test locally. The big mesh causes the CI/CD-Runner to crash due to running out of RAM")
 	@Test
-	public void testKnownFalsePositiveExample_BigMesh1() throws CityGmlParseException, InvalidGmlFileException {
-		ValidationConfiguration config = ValidationConfiguration.loadStandardValidationConfig();
-		config.setSchematronFilePathInGlobalParameters(null);
-		CityDoctorModel m = CityGmlParser.parseCityGmlFile("src/test/resources/SolidSelfIntTest-known_false_positive_Big_Mesh1.gml", config.getParserConfiguration());
-		Checker c = new Checker(config, m);
-		c.runChecks();
-		Building building = m.getBuildings().get(0);
-		// If an error was found, check if error is SolidSelfInt
-		if (building.containsAnyError()) {	
-			Geometry buildingGeom = building.getGeometry(GeometryType.SOLID, Lod.LOD2);
-			buildingGeom.clearCheckResults();
-			SolidSelfIntCheck check = new SolidSelfIntCheck();
-			check.check(buildingGeom);
-			CheckResult cr = buildingGeom.getCheckResult(check);
-			assertNotNull(cr);
-			assertEquals("Known False-Positive self-intersection was detected as error", ResultStatus.OK, cr.getResultStatus());
-		} 
-		
-		
+	public void testKnownFalsePositiveExample2() throws CityGmlParseException, InvalidGmlFileException {
+		testFalsePositiveExample("src/test/resources/SolidSelfIntTest-known_false_positive2.gml");
 	}
-	
-	@Ignore("Only run this test locally. The big mesh causes the CI/CD-Runner to crash due to running out of RAM")
-	@Test
-	public void testKnownFalsePositiveExample_BigMesh2() throws CityGmlParseException, InvalidGmlFileException {
-		ValidationConfiguration config = ValidationConfiguration.loadStandardValidationConfig();
-		config.setSchematronFilePathInGlobalParameters(null);
-		CityDoctorModel m = CityGmlParser.parseCityGmlFile("src/test/resources/SolidSelfIntTest-known_false_positive_Big_Mesh2.gml", config.getParserConfiguration());
-		Checker c = new Checker(config, m);
-		c.runChecks();
-		Building building = m.getBuildings().get(0);
-		// If an error was found, check if error is SolidSelfInt
-		if (building.containsAnyError()) {	
-			Geometry buildingGeom = building.getGeometry(GeometryType.SOLID, Lod.LOD2);
-			buildingGeom.clearCheckResults();
-			SolidSelfIntCheck check = new SolidSelfIntCheck();
-			check.check(buildingGeom);
-			CheckResult cr = buildingGeom.getCheckResult(check);
-			assertNotNull(cr);
-			//Ensure that checker did not find the false-positive self intersection
-			assertEquals("Known False-Positive self-intersection was detected as error", ResultStatus.OK, cr.getResultStatus());
-		} 
+	 
 		
-		
-	}
 	
-
-
 }
+