Error 216

[opel_howard]

could someone please help me finding the bug in this program...? it will really help me...
i keep getting error 216...

var
	i,j,temp,max:longint;
	x:longint;
    b:array [1..100000000000000] of boolean;
    nb:array [1..100000000000000] of integer;

function cyc(c:int64):integer;
begin
		if b[c] then
			cyc:=nb[c]
                else
		begin
			if (c mod 2=1) then
				cyc:=cyc((3*c)+1)+1
			else
                                cyc:=cyc(c div 2)+1;
                        nb[c]:=cyc;
                        b[c]:=true;
		end;
end;

begin
	b[1]:=true; nb[1]:=1;
	while not eof do
	begin
		readln(i,j);
		temp:=0; max:=0;
		if i<=j then
			for x:=i to j do
			begin
                                 temp:=cyc(x);
                                 if temp>max then
					max:=temp;
			end
		else
			for x:=i downto j do
			begin
                                temp:=cyc(x);
				if temp>max then
					max:=temp;
			end;
		writeln(i,' ',j,' ',max);
	end;
end.

this problem is from UVa, 100 - The 3n + 1