Trace file contents: 3 epochs.
		start	start	file	chunk
	epoch	index	time	offset	size
	0	0	0	#SIZE#	#SIZE#
	1	0	0	#SIZE#	#SIZE#
	2	12	0	#SIZE#	#SIZE#
Epoch 0: (initial values)
X X X X X X X X 
Epoch 1:
	event		event	cause	node	node
	index	time	node	index	index	value	rule/node
	0	0	0	0	0	X	(null)
	1	0	0	0	1	1	(pb:1)
	2	0	0	0	2	0	(wl:0)
	3	0	0	0	3	0	(wlx:0)
	4	0	0	0	7	0	(_pchg:0)
	5	10	1	4	5	1	[after 10]	~_pchg -> _bl+
	6	20	8	5	6	0	[after 10]	_bl -> blst-
	7	20	0	0	7	1	(_pchg:1)
	8	20	0	0	3	1	(wlx:1)
	9	24	0	0	2	1	(wl:1)
	10	30	5	8	5	0	[after 10]	wlx & pbx -> _bl-
	11	40	9	10	6	1	[after 10]	~_bl -> blst+
Epoch 2: (final values)
X 1 1 1 X 0 1 1 
