solved exception when even the OWL reasoner doesn't want to read a certain ontology

src/main/java/fr/emse/gitlab/saref/checkers/Clause_9_6_4_Checker.java

@@ -52,7 +52,7 @@ import fr.emse.gitlab.saref.managers.RepositoryManager;
 public class Clause_9_6_4_Checker extends AbstractClauseChecker {
 
 	private static enum MESSAGE {
-		profile, consistent, satisfiable;
+		profile, consistent, satisfiable, exception;
 	}
 
 	private final SAREFExample example;
@@ -89,25 +89,29 @@ public class Clause_9_6_4_Checker extends AbstractClauseChecker {
 		
 		OntologyManager ontologyManager = pipeline.getOntologyManager();
 
-		Set<Explanation<OWLAxiom>> incExplanation = ontologyManager.getInconsistenceExplanations(ontology, errorLogger);
-		if (incExplanation != null && !incExplanation.isEmpty()) {
-			String explanation = incExplanation.stream().map(e -> e.getAxioms().toString())
-					.collect(Collectors.joining("\n- ", "\n\n- ", "\n\n"));
-			logError(getMessage(MESSAGE.consistent, explanation));
-		} else {
-			ExplanationGenerator<OWLAxiom> generator = ontologyManager.getExplanationGenerator(ontology);
-			ontology.classesInSignature(Imports.INCLUDED).forEach(c -> {
-				if(c.isOWLNothing()) {
-					return;
-				}
-				Set<Explanation<OWLAxiom>> incExplanation2 = ontologyManager.getIncoherenceExplanations(generator, c);
-				if (!incExplanation2.isEmpty()) {
-					String explanation = incExplanation2.stream().map(e -> e.getAxioms().toString())
-							.collect(Collectors.joining("\n- ", "\n\n- ", "\n\n"));
-					logError(getMessage(MESSAGE.satisfiable, c, explanation));
-	
-				}
-			});
+		try {
+			Set<Explanation<OWLAxiom>> incExplanation = ontologyManager.getInconsistenceExplanations(ontology, errorLogger);
+			if (incExplanation != null && !incExplanation.isEmpty()) {
+				String explanation = incExplanation.stream().map(e -> e.getAxioms().toString())
+						.collect(Collectors.joining("\n- ", "\n\n- ", "\n\n"));
+				logError(getMessage(MESSAGE.consistent, explanation));
+			} else {
+				ExplanationGenerator<OWLAxiom> generator = ontologyManager.getExplanationGenerator(ontology);
+				ontology.classesInSignature(Imports.INCLUDED).forEach(c -> {
+					if(c.isOWLNothing()) {
+						return;
+					}
+					Set<Explanation<OWLAxiom>> incExplanation2 = ontologyManager.getIncoherenceExplanations(generator, c);
+					if (!incExplanation2.isEmpty()) {
+						String explanation = incExplanation2.stream().map(e -> e.getAxioms().toString())
+								.collect(Collectors.joining("\n- ", "\n\n- ", "\n\n"));
+						logError(getMessage(MESSAGE.satisfiable, c, explanation));
+		
+					}
+				});
+			}
+		} catch (Exception ex) {
+			logError(getMessage(MESSAGE.exception), ex);
 		}
 			
 	}

src/main/resources/messages/Clause_9_6_4_Checker.properties

 profile=The dataset in the example document shall satisfy the OWL2 DL profile. Violations are: %s
 consistent=The dataset in the example document shall be Consistent. Violations are: %s
 satisfiable=OWL Class %s declared in the example document should be satisfiable. Violations are: %s
+exception=An exception occurred while trying to reason with the ontology.