Program: 154334
Project: 154334
Buggy source:
public static String printBoard(Board board){
  StringBuilder boardString=new StringBuilder("String_Node_Str");
  Space thisSpace;
  int row, col, rowNum=1;
  String hDivider=getHDivider();
  String corner=getCorner();
  int[][] wallArray=new int[9][9];
  for (row=0; row < 9; row++) {
    for (col=0; col < 9; col++) {
      wallArray[row][col]=0;
    }
  }
  for (  Wall wall : board.getWallList()) {
    row=wall.getSpace().getY();
    col=wall.getSpace().getX();
    if (wall.isVertical())     wallArray[row][col]=1;
 else     wallArray[row][col]=2;
  }
  for (row=0; row < 9; row++) {
    boardString.append(rowNum + "String_Node_Str");
    rowNum++;
    for (col=0; col < 9; col++) {
      thisSpace=new Space(col + 1,row + 1);
      if (board.getPlayers()._1().getSpace().equals(thisSpace))       boardString.append(board.getPlayers()._1().getToken());
 else       if (board.getPlayers()._2().getSpace().equals(thisSpace))       boardString.append(board.getPlayers()._2().getToken());
 else       boardString.append("String_Node_Str");
      if (col != 8) {
        if (wallArray[row][col] == 1 || row != 0 && wallArray[row - 1][col] == 1)         boardString.append(V_WALL);
 else         boardString.append(V_DIVIDER);
      }
    }
    boardString.append("String_Node_Str");
    if (row != 8) {
      boardString.append("String_Node_Str");
      for (col=0; col < 9; col++) {
        if (wallArray[row][col] == 2 || col != 0 && wallArray[row][col - 1] == 2)         boardString.append(H_WALL + H_WALL + H_WALL);
 else         boardString.append(hDivider);
        if (col != 8) {
          if (wallArray[row][col] == 1)           boardString.append(V_WALL);
 else           if (wallArray[row][col] == 2)           boardString.append(H_WALL);
 else           boardString.append(corner);
        }
      }
      boardString.append("String_Node_Str");
    }
  }
  boardString.append("String_Node_Str");
  return boardString.toString();
}

Fixed version (ground truth):
public static String printBoard(Board board){
  StringBuilder boardString=new StringBuilder("String_Node_Str");
  Space thisSpace;
  int row, col, rowNum=1;
  String hDivider=getHDivider();
  String corner=getCorner();
  int[][] wallArray=new int[9][9];
  for (row=0; row < 9; row++) {
    for (col=0; col < 9; col++) {
      wallArray[row][col]=0;
    }
  }
  for (  Wall wall : board.getWallList()) {
    row=wall.getSpace().getNumeric();
    col=wall.getSpace().alphaToInt();
    if (wall.isVertical())     wallArray[row][col]=1;
 else     wallArray[row][col]=2;
  }
  for (row=0; row < 9; row++) {
    boardString.append(rowNum + "String_Node_Str");
    rowNum++;
    for (col=0; col < 9; col++) {
      thisSpace=new Space(col + 1,row + 1);
      if (board.getPlayers()._1().getSpace().equals(thisSpace))       boardString.append(board.getPlayers()._1().getToken());
 else       if (board.getPlayers()._2().getSpace().equals(thisSpace))       boardString.append(board.getPlayers()._2().getToken());
 else       boardString.append("String_Node_Str");
      if (col != 8) {
        if (wallArray[row][col] == 1 || row != 0 && wallArray[row - 1][col] == 1)         boardString.append(V_WALL);
 else         boardString.append(V_DIVIDER);
      }
    }
    boardString.append("String_Node_Str");
    if (row != 8) {
      boardString.append("String_Node_Str");
      for (col=0; col < 9; col++) {
        if (wallArray[row][col] == 2 || col != 0 && wallArray[row][col - 1] == 2)         boardString.append(H_WALL + H_WALL + H_WALL);
 else         boardString.append(hDivider);
        if (col != 8) {
          if (wallArray[row][col] == 1)           boardString.append(V_WALL);
 else           if (wallArray[row][col] == 2)           boardString.append(H_WALL);
 else           boardString.append(corner);
        }
      }
      boardString.append("String_Node_Str");
    }
  }
  boardString.append("String_Node_Str");
  return boardString.toString();
}