<s>
Property	B-Language
Specification	I-Language
Language	I-Language
(	O
PSL	O
)	O
is	O
a	O
temporal	O
logic	O
extending	O
linear	O
temporal	O
logic	O
with	O
a	O
range	O
of	O
operators	O
for	O
both	O
ease	O
of	O
expression	O
and	O
enhancement	O
of	O
expressive	O
power	O
.	O
</s>
<s>
PSL	O
makes	O
an	O
extensive	O
use	O
of	O
regular	B-Language
expressions	I-Language
and	O
syntactic	O
sugaring	O
.	O
</s>
<s>
It	O
is	O
widely	O
used	O
in	O
the	O
hardware	O
design	O
and	O
verification	O
industry	O
,	O
where	O
formal	O
verification	O
tools	O
(	O
such	O
as	O
model	B-Application
checking	I-Application
)	O
and/or	O
logic	O
simulation	O
tools	O
are	O
used	O
to	O
prove	O
or	O
refute	O
that	O
a	O
given	O
PSL	O
formula	O
holds	O
on	O
a	O
given	O
design	O
.	O
</s>
<s>
In	O
September	O
2005	O
,	O
the	O
IEEE	O
1850	O
Standard	O
for	O
Property	B-Language
Specification	I-Language
Language	I-Language
(	O
PSL	O
)	O
was	O
announced	O
.	O
</s>
<s>
Its	O
left	O
operand	O
is	O
a	O
PSL	O
regular	B-Language
expression	I-Language
and	O
its	O
right	O
operand	O
is	O
any	O
PSL	O
formula	O
(	O
be	O
it	O
in	O
LTL	O
style	O
or	O
regular	B-Language
expression	I-Language
style	O
)	O
.	O
</s>
<s>
The	O
semantics	O
of	O
is	O
that	O
on	O
every	O
time	O
point	O
i	O
such	O
that	O
the	O
sequence	O
of	O
time	O
points	O
up	O
to	O
i	O
constitute	O
a	O
match	O
to	O
the	O
regular	B-Language
expression	I-Language
r	O
,	O
the	O
path	O
from	O
i+1	O
should	O
satisfy	O
the	O
property	O
p	O
.	O
This	O
is	O
exemplified	O
in	O
the	O
figures	O
on	O
the	O
right	O
.	O
</s>
<s>
The	O
regular	B-Language
expressions	I-Language
of	O
PSL	O
have	O
the	O
common	O
operators	O
for	O
concatenation	O
(	O
)	O
,	O
Kleene-closure	O
(	O
)	O
,	O
and	O
union	O
(	O
)	O
,	O
as	O
well	O
as	O
operator	O
for	O
fusion	O
(	O
)	O
,	O
intersection	O
(	O
)	O
and	O
a	O
weaker	O
version	O
(	O
)	O
,	O
and	O
many	O
variations	O
for	O
consecutive	O
counting	O
and	O
in-consecutive	O
counting	O
e.g.	O
</s>
<s>
Here	O
and	O
are	O
PSL	O
regular	B-Language
expressions	I-Language
.	O
</s>
<s>
Here	O
is	O
a	O
PSL	O
regular	B-Language
expression	I-Language
.	O
</s>
<s>
The	O
formula	O
r	O
|	O
->	O
f	O
where	O
r	O
is	O
a	O
regular	B-Language
expression	I-Language
and	O
f	O
is	O
a	O
temporal	O
logic	O
formula	O
holds	O
on	O
a	O
computation	O
w	O
if	O
any	O
prefix	O
of	O
w	O
matching	O
r	O
has	O
a	O
continuation	O
satisfying	O
f	O
.	O
Other	O
non-LTL	O
operators	O
of	O
PSL	O
are	O
the	O
@	O
operator	O
,	O
for	O
specifying	O
multiply-clocked	O
designs	O
,	O
the	O
abort	O
operators	O
,	O
for	O
dealing	O
with	O
hardware	O
resets	O
,	O
and	O
local	O
variables	O
for	O
succinctness	O
.	O
</s>
<s>
Property	B-Language
Specification	I-Language
Language	I-Language
can	O
be	O
used	O
with	O
multiple	O
electronic	O
system	O
design	O
languages	O
(	O
HDLs	O
)	O
such	O
as	O
:	O
</s>
<s>
SystemC	B-Language
(	O
IEEE	O
1666	O
)	O
by	O
Open	O
SystemC	B-Language
Initiative	O
(	O
OSCI	O
)	O
.	O
</s>
