Program: 54653
Project: 54653
Buggy source:
public String toJava(int indent,BytecodeMappingTracer tracer){
  String indstr=InterpreterUtil.getIndentString(indent);
  StringBuilder buf=new StringBuilder();
  String new_line_separator=DecompilerContext.getNewLineSeparator();
  buf.append(ExprProcessor.listToJava(varDefinitions,indent,tracer));
  buf.append(first.toJava(indent,tracer));
  if (isLabeled()) {
    buf.append(indstr).append("String_Node_Str").append(this.id).append("String_Node_Str").append(new_line_separator);
    tracer.incrementSourceLine();
  }
  buf.append(indstr).append(headexprent.get(0).toJava(indent,tracer)).append("String_Node_Str").append(new_line_separator);
  tracer.incrementSourceLine();
  if (ifstat == null) {
    buf.append(InterpreterUtil.getIndentString(indent + 1));
    if (ifedge.explicit) {
      if (ifedge.getType() == StatEdge.TYPE_BREAK) {
        buf.append("String_Node_Str");
      }
 else {
        buf.append("String_Node_Str");
      }
      if (ifedge.labeled) {
        buf.append("String_Node_Str").append(ifedge.closure.id);
      }
    }
    buf.append("String_Node_Str").append(new_line_separator);
    tracer.incrementSourceLine();
  }
 else {
    buf.append(ExprProcessor.jmpWrapper(ifstat,indent + 1,true,tracer));
  }
  boolean elseif=false;
  if (elsestat != null) {
    if (elsestat.type == Statement.TYPE_IF && elsestat.varDefinitions.isEmpty() && elsestat.getFirst().getExprents().isEmpty() && !elsestat.isLabeled() && (elsestat.getSuccessorEdges(STATEDGE_DIRECT_ALL).isEmpty() || !elsestat.getSuccessorEdges(STATEDGE_DIRECT_ALL).get(0).explicit)) {
      String content=ExprProcessor.jmpWrapper(elsestat,indent,false,tracer);
      content=content.substring(indstr.length());
      buf.append(indstr).append("String_Node_Str");
      buf.append(content);
      elseif=true;
    }
 else {
      String content=ExprProcessor.jmpWrapper(elsestat,indent + 1,false,tracer);
      if (content.length() > 0) {
        buf.append(indstr).append("String_Node_Str").append(new_line_separator);
        tracer.incrementSourceLine();
        buf.append(content);
      }
    }
  }
  if (!elseif) {
    buf.append(indstr).append("String_Node_Str").append(new_line_separator);
    tracer.incrementSourceLine();
  }
  return buf.toString();
}

Fixed version (ground truth):
public String toJava(int indent,BytecodeMappingTracer tracer){
  String indstr=InterpreterUtil.getIndentString(indent);
  StringBuilder buf=new StringBuilder();
  String new_line_separator=DecompilerContext.getNewLineSeparator();
  buf.append(ExprProcessor.listToJava(varDefinitions,indent,tracer));
  buf.append(first.toJava(indent,tracer));
  if (isLabeled()) {
    buf.append(indstr).append("String_Node_Str").append(this.id).append("String_Node_Str").append(new_line_separator);
    tracer.incrementCurrentSourceLine();
  }
  buf.append(indstr).append(headexprent.get(0).toJava(indent,tracer)).append("String_Node_Str").append(new_line_separator);
  tracer.incrementCurrentSourceLine();
  if (ifstat == null) {
    buf.append(InterpreterUtil.getIndentString(indent + 1));
    if (ifedge.explicit) {
      if (ifedge.getType() == StatEdge.TYPE_BREAK) {
        buf.append("String_Node_Str");
      }
 else {
        buf.append("String_Node_Str");
      }
      if (ifedge.labeled) {
        buf.append("String_Node_Str").append(ifedge.closure.id);
      }
    }
    buf.append("String_Node_Str").append(new_line_separator);
    tracer.incrementCurrentSourceLine();
  }
 else {
    buf.append(ExprProcessor.jmpWrapper(ifstat,indent + 1,true,tracer));
  }
  boolean elseif=false;
  if (elsestat != null) {
    if (elsestat.type == Statement.TYPE_IF && elsestat.varDefinitions.isEmpty() && elsestat.getFirst().getExprents().isEmpty() && !elsestat.isLabeled() && (elsestat.getSuccessorEdges(STATEDGE_DIRECT_ALL).isEmpty() || !elsestat.getSuccessorEdges(STATEDGE_DIRECT_ALL).get(0).explicit)) {
      String content=ExprProcessor.jmpWrapper(elsestat,indent,false,tracer);
      content=content.substring(indstr.length());
      buf.append(indstr).append("String_Node_Str");
      buf.append(content);
      elseif=true;
    }
 else {
      BytecodeMappingTracer else_tracer=new BytecodeMappingTracer(tracer.getCurrentSourceLine());
      String content=ExprProcessor.jmpWrapper(elsestat,indent + 1,false,else_tracer);
      if (content.length() > 0) {
        buf.append(indstr).append("String_Node_Str").append(new_line_separator);
        else_tracer.shiftSourceLines(1);
        tracer.setCurrentSourceLine(else_tracer.getCurrentSourceLine() + 1);
        tracer.addTracer(else_tracer);
        buf.append(content);
      }
    }
  }
  if (!elseif) {
    buf.append(indstr).append("String_Node_Str").append(new_line_separator);
    tracer.incrementCurrentSourceLine();
  }
  return buf.toString();
}