<s>
Rebeca	B-Language
(	O
acronym	O
for	O
Reactive	O
Objects	O
Language	O
)	O
is	O
an	O
actor-based	O
modeling	B-Language
language	I-Language
with	O
a	O
formal	O
foundation	O
,	O
designed	O
in	O
an	O
effort	O
to	O
bridge	O
the	O
gap	O
between	O
formal	O
verification	O
approaches	O
and	O
real	O
applications	O
.	O
</s>
<s>
It	O
can	O
be	O
considered	O
as	O
a	O
reference	O
model	O
for	O
concurrent	B-Architecture
computation	I-Architecture
,	O
based	O
on	O
an	O
operational	O
interpretation	O
of	O
the	O
actor	B-Application
model	I-Application
.	O
</s>
<s>
Rebeca	B-Language
is	O
supported	O
by	O
a	O
set	O
of	O
verification	O
tools	O
.	O
</s>
<s>
Earlier	O
tools	O
provided	O
a	O
front-end	O
to	O
work	O
with	O
Rebeca	B-Language
code	O
,	O
and	O
to	O
translate	O
the	O
Rebeca	B-Language
code	O
into	O
input	O
languages	O
of	O
well-known	O
and	O
mature	O
model	B-Application
checkers	I-Application
(	O
like	O
SPIN	O
and	O
NuSMV	O
)	O
and	O
thus	O
,	O
were	O
able	O
to	O
verify	O
their	O
properties	O
.	O
</s>
<s>
Rebeca	B-Language
,	O
since	O
2005	O
,	O
is	O
supported	O
by	O
a	O
direct	O
model	B-Application
checker	I-Application
based	O
on	O
Modere	O
(	O
the	O
Model	B-Application
checking	I-Application
Engine	O
of	O
Rebeca	B-Language
)	O
.	O
</s>
