<s>
The	O
ANSI/ISO	B-Language
C	I-Language
Specification	I-Language
Language	I-Language
(	O
ACSL	O
)	O
is	O
a	O
specification	O
language	O
for	O
C	B-Language
programs	I-Language
,	O
using	O
Hoare	O
style	O
pre	O
-	O
and	O
postconditions	O
and	O
invariants	O
,	O
that	O
follows	O
the	O
design	B-Application
by	I-Application
contract	I-Application
paradigm	O
.	O
</s>
<s>
Specifications	O
are	O
written	O
as	O
C	B-Language
annotation	O
comments	O
to	O
the	O
C	B-Language
program	I-Language
,	O
which	O
hence	O
can	O
be	O
compiled	O
with	O
any	O
C	B-Language
compiler	O
.	O
</s>
<s>
The	O
current	O
verification	O
tool	O
for	O
ACSL	O
is	O
Frama-C	B-Language
.	O
</s>
<s>
It	O
also	O
implements	O
a	O
sister	O
language	O
,	O
ANSI/ISO	O
C++	B-Language
Specification	O
Language	O
(	O
ACSL++	O
)	O
,	O
defined	O
for	O
C++	B-Language
.	O
</s>
<s>
In	O
1983	O
,	O
the	O
American	O
National	O
Standards	O
Institute	O
(	O
ANSI	O
)	O
commissioned	O
a	O
committee	O
,	O
X3J11	O
,	O
to	O
standardize	O
the	O
C	B-Language
language	I-Language
.	O
</s>
<s>
The	O
first	O
standard	O
for	O
C	B-Language
was	O
published	O
by	O
ANSI	O
.	O
</s>
<s>
Although	O
this	O
document	O
was	O
subsequently	O
adopted	O
by	O
International	O
Organization	O
for	O
Standardization	O
(	O
ISO	O
)	O
and	O
subsequent	O
revisions	O
published	O
by	O
ISO	O
have	O
been	O
adopted	O
by	O
ANSI	O
,	O
the	O
name	O
ANSI	O
C	B-Language
continues	O
to	O
be	O
used	O
.	O
</s>
<s>
It	O
aims	O
at	O
specifying	O
behavioral	O
properties	O
of	O
C	B-Language
source	O
code	O
.	O
</s>
<s>
The	O
main	O
inspiration	O
for	O
this	O
language	O
comes	O
from	O
the	O
specification	O
language	O
of	O
the	O
Caduceus	O
tool	O
for	O
deductive	O
verification	O
of	O
behavioral	O
properties	O
of	O
C	B-Language
programs	I-Language
.	O
</s>
<s>
The	O
specification	O
language	O
of	O
Caduceus	O
is	O
itself	O
inspired	O
from	O
JML	B-Language
which	O
aims	O
at	O
similar	O
goals	O
for	O
Java	O
source	O
code	O
.	O
</s>
<s>
One	O
difference	O
with	O
JML	B-Language
is	O
that	O
ACSL	O
is	O
intended	O
for	O
static	O
verification	O
and	O
deductive	O
verification	O
whereas	O
JML	B-Language
is	O
designed	O
both	O
for	O
runtime	O
assertion	O
checking	O
and	O
static	O
verification	O
using	O
for	O
instance	O
the	O
ESC/Java	B-Application
tool	O
.	O
</s>
<s>
Most	O
of	O
the	O
features	O
of	O
ACSL	O
are	O
supported	O
by	O
Frama-C	B-Language
.	O
</s>
<s>
The	O
TrustInSoft	O
static	O
analyzer	O
is	O
a	O
commercial	O
derivative	O
of	O
Frama-C	B-Language
.	O
</s>
<s>
It	O
verifies	O
program	O
behavior	O
and	O
(	O
with	O
builtin	O
rules	O
based	O
on	O
the	O
language	O
specification	O
)	O
catch	O
instances	O
of	O
undefined	B-Language
behavior	I-Language
.	O
</s>
