# test exit and next.
# output nondeterministic.
resource co6()
	op p(int a, int b)

	int x = -5
	int y = -6
	write("begin:", x,y)
	co [ i = 1 to 5] call p (11*i, i*11) ->
		write ("exiting first co")
		exit
	oc
	co [ i= 1 to 4, j = 2 to 3 ] call p(x,y) ->
		write ("after quantified p(x,y):", i, j)
		p(i,j)
		if (i > j) { next }
		p(-i,-j)
	// call p(x,y) ->
		write ("after simple p(x,y)")
		co [ i=3 downto 0 ] call p(i,-1111) ->
			write("testing i:", i)
			if (i == 1) { next }
			write("didn't pass:", i) 
		oc
	oc
	write("done:",x,y)

	proc p(a,b)  {
		write("in p:",a,b)
		# the following assignments should have no effect
		a= 55555
		b= 66666
	}
end