$5\mathrm{.}9.$ Consider the following program:

boolean blocked $[2]$;

int turn;

void P $($int id$)$

Line $2$: int turn semi colon at indentation level $0.$

Line $3$: void P open parenthesis int i d close parenthesis at indentation level $0.$

Line $4$: open curly bracket at indentation level $0.$

Line $5$: Blank.

Line $6$: while open parenthesis true close parenthesis open curly bracket at indentation level $1.$

Line $7$: blocked open square bracket i d close square bracket equals true semi colon at indentation level $2.$

Line $8$: while open parenthesis turn logical not equal to operator i d close parenthesis open curly bracket at indentation level $2.$

Line $9$: while open parenthesis blocked open square bracket $1$ minus i d close square bracket close parenthesis at indentation level $4.$

Line $10$: forward slash asterisk do nothing asterisk forward slash semi colon at indentation level $5.$

Line $11$: turn equals i d semi colon at indentation level $4.$

Line $12$: close curly bracket at indentation level $2.$

Line $13$: Blank.

Line $14$: forward slash asterisk critical section asterisk forward slash at indentation level $2.$

Line $15$: blocked open square bracket i d close square bracket equals false semi colon at indentatio