Program: 17634
Project: 17634
Buggy source:
@Override public Collection<TestCase> generate(SchemaSource source){
  Collection<TestCase> tests=new ArrayList<>();
  Query q=QueryFactory.create(PrefixNSService.getSparqlPrefixDecl() + getTAGQuery());
  QueryExecution qe=new QueryExecutionFactoryModel(source.getModel()).createQueryExecution(q);
  ResultSet rs=qe.execSelect();
  while (rs.hasNext()) {
    QuerySolution row=rs.next();
    Collection<Binding> bindings=new ArrayList<>();
    Collection<String> references=new ArrayList<>();
    String description;
    for (    PatternParameter p : pattern.getParameters()) {
      if (row.contains(p.getId())) {
        RDFNode n=row.get(p.getId());
        Binding b;
        try {
          b=new Binding(p,n);
        }
 catch (        BindingException e) {
          log.error("String_Node_Str",p.getId(),this.getTAGUri(),e);
          continue;
        }
        bindings.add(b);
        if (n.isResource() && !"String_Node_Str".equalsIgnoreCase(p.getId())) {
          references.add(n.toString().trim().replace("String_Node_Str","String_Node_Str"));
        }
      }
 else {
        log.error("String_Node_Str",p.getId(),this.getTAGUri());
        break;
      }
    }
    if (bindings.size() != getTAGPattern().getParameters().size()) {
      log.error("String_Node_Str",pattern.getId(),this.getTAGUri());
      continue;
    }
    if (row.get("String_Node_Str") != null) {
      description=row.get("String_Node_Str").toString();
    }
 else {
      log.error("String_Node_Str",this.getTAGUri());
      continue;
    }
    try {
      Collection<ResultAnnotation> patternBindedAnnotations=pattern.getBindedAnnotations(bindings);
      patternBindedAnnotations.addAll(generatorAnnotations);
      PatternBasedTestCase tc=new PatternBasedTestCase(TestUtils.generateTestURI(source.getPrefix(),getTAGPattern(),bindings,getTAGUri()),new TestCaseAnnotation(TestGenerationType.AutoGenerated,this.getTAGUri(),source.getSourceType(),source.getUri(),references,description,null,patternBindedAnnotations),pattern,bindings);
      new TestCaseValidator(tc).validate();
      tests.add(tc);
    }
 catch (    TestCaseInstantiationException e) {
      log.error(e.getMessage(),e);
    }
  }
  return tests;
}

Fixed version (ground truth):
/** 
 * {@inheritDoc} 
 */
@Override public Collection<TestCase> generate(SchemaSource source){
  Collection<TestCase> tests=new ArrayList<>();
  Query q=QueryFactory.create(PrefixNSService.getSparqlPrefixDecl() + getTAGQuery());
  QueryExecution qe=new QueryExecutionFactoryModel(source.getModel()).createQueryExecution(q);
  ResultSet rs=qe.execSelect();
  while (rs.hasNext()) {
    QuerySolution row=rs.next();
    Collection<Binding> bindings=new ArrayList<>();
    Collection<String> references=new ArrayList<>();
    String description;
    for (    PatternParameter p : pattern.getParameters()) {
      if (row.contains(p.getId())) {
        RDFNode n=row.get(p.getId());
        Binding b;
        try {
          b=new Binding(p,n);
        }
 catch (        BindingException e) {
          log.error("String_Node_Str",p.getId(),this.getTAGUri(),e);
          continue;
        }
        bindings.add(b);
        if (n.isResource() && !"String_Node_Str".equalsIgnoreCase(p.getId())) {
          references.add(n.toString().trim().replace("String_Node_Str","String_Node_Str"));
        }
      }
 else {
        log.error("String_Node_Str",p.getId(),this.getTAGUri());
        break;
      }
    }
    if (bindings.size() != getTAGPattern().getParameters().size()) {
      log.error("String_Node_Str",pattern.getId(),this.getTAGUri());
      continue;
    }
    if (row.get("String_Node_Str") != null) {
      description=row.get("String_Node_Str").toString();
    }
 else {
      log.error("String_Node_Str",this.getTAGUri());
      continue;
    }
    try {
      Collection<ResultAnnotation> patternBindedAnnotations=pattern.getBindedAnnotations(bindings);
      patternBindedAnnotations.addAll(generatorAnnotations);
      PatternBasedTestCase tc=new PatternBasedTestCase(TestUtils.generateTestURI(source.getPrefix(),getTAGPattern(),bindings,getTAGUri()),new TestCaseAnnotation(TestGenerationType.AutoGenerated,this.getTAGUri(),source.getSourceType(),source.getUri(),references,description,null,patternBindedAnnotations),pattern,bindings);
      new TestCaseValidator(tc).validate();
      tests.add(tc);
    }
 catch (    TestCaseInstantiationException e) {
      log.error(e.getMessage(),e);
    }
  }
  return tests;
}