Program: 24879
Project: 24879
Buggy source:
public void calc(){
  String[] arguments=new String[10];
  String targetType=variables.get("String_Node_Str");
  if (targetType.equals("String_Node_Str")) {
    return;
  }
  arguments[1]="String_Node_Str";
  int baseTime=parseInt(variables.get("String_Node_Str"));
  int plusTime=parseInt(attr(attribute,1));
  int time=baseTime + plusTime;
  arguments[0]="String_Node_Str";
  String shapeType=attr(attribute,2);
  if (shapeType.equals("String_Node_Str")) {
    arguments[3]="String_Node_Str";
    arguments[4]=attr(attribute,3);
    arguments[5]=attr(attribute,4);
    arguments[6]=attr(attribute,5);
    int targetID=parseInt(variables.get("String_Node_Str"));
    int offsetAngle=parseInt(attr(attribute,6));
    int amount=parseInt(variables.get("String_Node_Str"));
    if (amount == 1) {
      arguments[2]=Integer.toString(targetID);
      arguments[7]=Integer.toString(offsetAngle);
      Instruction instruction=new Instruction(arguments);
      addInstruction(time,instruction);
    }
 else {
      int angle=parseInt(attr(attribute,7));
      float theta=angle / (amount - 1);
      float startAngle=offsetAngle - theta * (amount - 1) / 2;
      for (int i=0; i < amount; i++) {
        arguments[2]=Integer.toString(targetID + i);
        arguments[7]=Integer.toString((int)(startAngle + i * theta));
        Instruction instruction=new Instruction(arguments);
        addInstruction(time,instruction);
      }
    }
  }
}

Fixed version (ground truth):
public void calc(){
  String[] arguments=new String[10];
  String targetType=variables.get("String_Node_Str");
  if (targetType.equals("String_Node_Str")) {
    return;
  }
  arguments[1]="String_Node_Str";
  int baseTime=parseInt(variables.get("String_Node_Str"));
  int plusTime=parseInt(attr(attribute,1));
  int time=baseTime + plusTime;
  arguments[0]="String_Node_Str";
  String shapeType=attr(attribute,2);
  if (shapeType.equals("String_Node_Str")) {
    arguments[3]="String_Node_Str";
    arguments[4]=attr(attribute,3);
    arguments[5]=attr(attribute,4);
    arguments[6]=attr(attribute,5);
    int targetID=parseInt(variables.get("String_Node_Str"));
    int offsetAngle=parseInt(attr(attribute,6));
    int amount=parseInt(variables.get("String_Node_Str"));
    if (amount == 1) {
      arguments[2]=Integer.toString(targetID);
      arguments[7]=Integer.toString(offsetAngle);
      Instruction instruction=new Instruction(arguments);
      addInstruction(time,instruction);
    }
 else {
      int angle=parseInt(attr(attribute,7));
      float theta;
      if (angle == 360)       theta=angle / (amount);
 else       theta=angle / (amount - 1);
      float startAngle=offsetAngle - theta * (amount - 1) / 2;
      for (int i=0; i < amount; i++) {
        arguments[2]=Integer.toString(targetID + i);
        arguments[7]=Integer.toString((int)(startAngle + i * theta));
        Instruction instruction=new Instruction(arguments);
        addInstruction(time,instruction);
      }
    }
  }
 else   if (shapeType.equals("String_Node_Str")) {
    arguments[3]="String_Node_Str";
    arguments[4]=attr(attribute,3);
    arguments[5]=attr(attribute,4);
    arguments[6]=attr(attribute,5);
    int targetID=parseInt(variables.get("String_Node_Str"));
    int offsetAngle=parseInt(attr(attribute,6));
    int amount=parseInt(variables.get("String_Node_Str"));
    if (amount == 1) {
      arguments[2]=Integer.toString(targetID);
      arguments[7]=Integer.toString(offsetAngle);
      Instruction instruction=new Instruction(arguments);
      addInstruction(time,instruction);
    }
 else {
      int angle=parseInt(attr(attribute,7));
      float theta;
      if (angle == 360)       theta=angle / (amount);
 else       theta=angle / (amount - 1);
      int interval=parseInt(attr(attribute,8));
      for (int i=0; i < amount; i++) {
        arguments[2]=Integer.toString(targetID + i);
        arguments[7]=Integer.toString((int)(offsetAngle + i * theta));
        Instruction instruction=new Instruction(arguments);
        addInstruction(time + i * interval,instruction);
      }
    }
  }
}