Program: 12746
Project: 12746
Buggy source:
private static Interaction parseInteraction(NestedDocument<QName> interaction){
  URI persistentIdentity=null;
  String version=null;
  String displayId=null;
  String name=null;
  String description=null;
  URI wasDerivedFrom=null;
  Set<URI> type=new HashSet<>();
  List<Participation> participations=new ArrayList<>();
  List<Annotation> annotations=new ArrayList<>();
  for (  NamedProperty<QName> i : interaction.getProperties()) {
    if (i.getName().equals(Sbol2Terms.Identified.persistentIdentity)) {
      persistentIdentity=URI.create(((Literal<QName>)i.getValue()).getValue().toString());
    }
 else     if (i.getName().equals(Sbol2Terms.Identified.version)) {
      version=((Literal<QName>)i.getValue()).getValue().toString();
    }
 else     if (i.getName().equals(Sbol2Terms.Documented.displayId)) {
      displayId=((Literal<QName>)i.getValue()).getValue().toString();
    }
 else     if (i.getName().equals(Sbol2Terms.Interaction.type)) {
      type.add(URI.create(((Literal<QName>)i.getValue()).getValue().toString()));
    }
 else     if (i.getName().equals(Sbol2Terms.Interaction.hasParticipations)) {
      participations.add(parseParticipation((NestedDocument<QName>)i.getValue()));
    }
 else     if (i.getName().equals(Sbol2Terms.Documented.title)) {
      name=((Literal<QName>)i.getValue()).getValue().toString();
    }
 else     if (i.getName().equals(Sbol2Terms.Documented.description)) {
      description=((Literal<QName>)i.getValue()).getValue().toString();
    }
 else     if (i.getName().equals(ProvTerms.Prov.wasDerivedFrom)) {
      wasDerivedFrom=URI.create(((Literal<QName>)i.getValue()).getValue().toString());
    }
 else {
      annotations.add(new Annotation(i));
    }
  }
  Interaction i=new Interaction(interaction.getIdentity(),type);
  if (participations != null) {
    i.setParticipations(participations);
  }
  if (persistentIdentity != null)   i.setPersistentIdentity(persistentIdentity);
  if (version != null)   i.setVersion(version);
  if (displayId != null)   i.setDisplayId(displayId);
  if (name != null)   i.setName(name);
  if (description != null)   i.setDescription(description);
  if (wasDerivedFrom != null)   i.setWasDerivedFrom(wasDerivedFrom);
  if (!annotations.isEmpty())   i.setAnnotations(annotations);
  return i;
}

Fixed version (ground truth):
private static Interaction parseInteraction(NestedDocument<QName> interaction){
  URI persistentIdentity=null;
  String version=null;
  String displayId=null;
  String name=null;
  String description=null;
  URI wasDerivedFrom=null;
  Set<URI> type=new HashSet<>();
  List<Participation> participations=new ArrayList<>();
  List<Annotation> annotations=new ArrayList<>();
  for (  NamedProperty<QName> i : interaction.getProperties()) {
    if (i.getName().equals(Sbol2Terms.Identified.persistentIdentity)) {
      persistentIdentity=URI.create(((Literal<QName>)i.getValue()).getValue().toString());
    }
 else     if (i.getName().equals(Sbol2Terms.Identified.version)) {
      version=((Literal<QName>)i.getValue()).getValue().toString();
    }
 else     if (i.getName().equals(Sbol2Terms.Documented.displayId)) {
      displayId=((Literal<QName>)i.getValue()).getValue().toString();
    }
 else     if (i.getName().equals(Sbol2Terms.Interaction.type)) {
      type.add(URI.create(((Literal<QName>)i.getValue()).getValue().toString()));
    }
 else     if (i.getName().equals(Sbol2Terms.Interaction.hasParticipations)) {
      participations.add(parseParticipation((NestedDocument<QName>)i.getValue()));
    }
 else     if (i.getName().equals(Sbol2Terms.Documented.title)) {
      name=((Literal<QName>)i.getValue()).getValue().toString();
    }
 else     if (i.getName().equals(Sbol2Terms.Documented.description)) {
      description=((Literal<QName>)i.getValue()).getValue().toString();
    }
 else     if (i.getName().equals(ProvTerms.Prov.wasDerivedFrom)) {
      wasDerivedFrom=URI.create(((Literal<QName>)i.getValue()).getValue().toString());
    }
 else {
      annotations.add(new Annotation(i));
    }
  }
  Interaction i=new Interaction(interaction.getIdentity(),type);
  if (!participations.isEmpty())   i.setParticipations(participations);
  if (persistentIdentity != null)   i.setPersistentIdentity(persistentIdentity);
  if (version != null)   i.setVersion(version);
  if (displayId != null)   i.setDisplayId(displayId);
  if (name != null)   i.setName(name);
  if (description != null)   i.setDescription(description);
  if (wasDerivedFrom != null)   i.setWasDerivedFrom(wasDerivedFrom);
  if (!annotations.isEmpty())   i.setAnnotations(annotations);
  return i;
}