expecting out-of-bounds access run-time error 
	0	0	7	null
	10	1	1	
	20	4	1	reqsync.B?(reqsync.x1)
	20	17	6	rsrc.S!(false)
	20	5	1	reqsync.I?(reqsync.x2)
	20	11	3	adsrc.S!(0)
	30	3	1	
	40	2	1	reqsync.O!(reqsync.x1,reqsync.x2)
	40	6	2	brom.Req?(brom.w,brom.a)
	50	1	1	
	50	10	2	[ brom.w -> ... [] else -> ... ]
	60	4	1	reqsync.B?(reqsync.x1)
	60	17	6	rsrc.S!(false)
	60	5	1	reqsync.I?(reqsync.x2)
	60	14	3	adsrc.S!(1)
	60	9	2	brom.Read!(brom.data[brom.a])
	60	15	4	bsnk.B?(bsnk.b)
	70	3	1	
	70	7	2	null
	80	6	2	brom.Req?(brom.w,brom.a)
	80	2	1	reqsync.O!(reqsync.x1,reqsync.x2)
	90	10	2	[ brom.w -> ... [] else -> ... ]
	90	1	1	
	100	9	2	brom.Read!(brom.data[brom.a])
	100	15	4	bsnk.B?(bsnk.b)
	100	4	1	reqsync.B?(reqsync.x1)
	100	17	6	rsrc.S!(false)
	100	5	1	reqsync.I?(reqsync.x2)
	100	13	3	adsrc.S!(2)
	110	7	2	null
	110	3	1	
	120	2	1	reqsync.O!(reqsync.x1,reqsync.x2)
	120	6	2	brom.Req?(brom.w,brom.a)
	130	1	1	
	130	10	2	[ brom.w -> ... [] else -> ... ]
	140	4	1	reqsync.B?(reqsync.x1)
	140	17	6	rsrc.S!(false)
	140	5	1	reqsync.I?(reqsync.x2)
	140	12	3	adsrc.S!(5)
	140	9	2	brom.Read!(brom.data[brom.a])
	140	15	4	bsnk.B?(bsnk.b)
	150	3	1	
	150	7	2	null
	160	6	2	brom.Req?(brom.w,brom.a)
	160	2	1	reqsync.O!(reqsync.x1,reqsync.x2)
	170	10	2	[ brom.w -> ... [] else -> ... ]
	170	1	1	
FATAL: reference to uninstantiated bool index [5]
ERROR: unrolling aliases.
Error resolving a single instance alias.
Run-time error resolving nonmeta reference.
Run-time error writing channel: brom.Read!(brom.data[brom.a])
Run-time error while checking event.
event[9]:	180	9	2	brom.Read!(brom.data[brom.a])	[by:10]
Caught run-time exception during execution.  Halting.
... at line 7
