Program: 166730
Project: 166730
Buggy source:
/** 
 * Create a Sentence with the given fields
 * @param content The Term that forms the content of the sentence
 * @param punctuation The punctuation indicating the type of the sentence
 * @param truth The truth value of the sentence, null for question
 * @param stamp The stamp of the sentence indicating its derivation time andbase
 */
public Sentence(final T _content,final char punctuation,final TruthValue truth,final Stamp stamp){
  this.punctuation=punctuation;
  if ((!isQuestion() && !isQuest()) && (truth == null)) {
    throw new RuntimeException("String_Node_Str");
  }
  if ((isQuestion() || isQuest()) && !stamp.isEternal()) {
    stamp.setEternal();
  }
  this.truth=truth;
  this.stamp=stamp;
  this.revisible=!((_content instanceof Conjunction) && _content.hasVarDep());
  if (_content.hasVar() && (_content instanceof CompoundTerm) && (!((CompoundTerm)_content).isNormalized())) {
    this.content=(T)((CompoundTerm)_content).cloneDeepVariables();
    if (this.content == null) {
      throw new RuntimeException("String_Node_Str" + _content);
    }
    final CompoundTerm c=(CompoundTerm)content;
    List<Variable> vars=new ArrayList();
    Map<CharSequence,CharSequence> rename=new HashMap();
    c.recurseVariableTerms(new Term.TermVisitor(){
      @Override public void visit(      final Term t){
        if (t instanceof Variable) {
          Variable v=((Variable)t);
          if (v.getScope() != v) {
            v.setScope(c,v.name());
          }
          vars.add(v);
        }
      }
    }
);
    boolean renamed=false;
    for (    final Variable v : vars) {
      CharSequence vname=v.name();
      CharSequence n=rename.get(vname);
      if (n == null) {
        rename.put(vname,n=Variable.getName(v.getType(),rename.size() + 1));
        renamed=true;
      }
      v.setScope(c,n);
    }
    c.setNormalized(true);
    if (renamed)     ((CompoundTerm)content).invalidateName();
  }
 else {
    this.content=_content;
  }
  if (isUniqueByOcurrenceTime())   this.hash=Objects.hash(content,punctuation,truth,stamp.getOccurrenceTime());
 else   this.hash=Objects.hash(content,punctuation,truth);
}

Fixed version (ground truth):
/** 
 * Create a Sentence with the given fields
 * @param content The Term that forms the content of the sentence
 * @param punctuation The punctuation indicating the type of the sentence
 * @param truth The truth value of the sentence, null for question
 * @param stamp The stamp of the sentence indicating its derivation time andbase
 */
public Sentence(final T _content,final char punctuation,final TruthValue truth,final Stamp stamp){
  this.punctuation=punctuation;
  if ((!isQuestion() && !isQuest()) && (truth == null)) {
    throw new RuntimeException("String_Node_Str");
  }
  if ((isQuestion() || isQuest()) && !stamp.isEternal()) {
    stamp.setEternal();
  }
  this.truth=truth;
  this.stamp=stamp;
  this.revisible=!((_content instanceof Conjunction) && _content.hasVarDep());
  if (_content.hasVar() && (_content instanceof CompoundTerm) && (!((CompoundTerm)_content).isNormalized())) {
    this.content=(T)((CompoundTerm)_content).cloneDeepVariables();
    final CompoundTerm c=(CompoundTerm)content;
    List<Variable> vars=new ArrayList();
    c.recurseVariableTerms(new Term.TermVisitor(){
      @Override public void visit(      final Term t){
        if (t instanceof Variable) {
          Variable v=((Variable)t);
          vars.add(v);
        }
      }
    }
);
    Map<CharSequence,CharSequence> rename=new HashMap();
    boolean renamed=false;
    for (    final Variable v : vars) {
      CharSequence vname=v.name();
      if (!v.getScope().equals(v) && !v.hasVarIndep()) {
        vname=v.name() + "String_Node_Str" + v.getScope().toString();
      }
      CharSequence n=rename.get(vname);
      if (n == null) {
        rename.put(vname,n=Variable.getName(v.getType(),rename.size() + 1));
        renamed=true;
      }
      v.setScope(c,n);
    }
    if (renamed)     c.invalidateName();
    c.setNormalized(true);
  }
 else {
    this.content=_content;
  }
  if (isUniqueByOcurrenceTime())   this.hash=Objects.hash(content,punctuation,truth,stamp.getOccurrenceTime());
 else   this.hash=Objects.hash(content,punctuation,truth);
}