<s>
Fastest	B-Application
is	O
a	O
model-based	O
testing	O
tool	O
that	O
works	O
with	O
specifications	O
written	O
in	O
the	O
Z	B-Language
notation	I-Language
.	O
</s>
<s>
The	O
tool	O
implements	B-Language
the	O
Test	O
Template	O
Framework	O
(	O
TTF	O
)	O
proposed	O
by	O
Phil	O
Stocks	O
and	O
David	O
Carrington	O
.	O
</s>
<s>
Fastest	B-Application
presents	O
a	O
command-line	O
user	O
interface	B-Language
.	O
</s>
<s>
The	O
user	O
first	O
needs	O
to	O
load	O
a	O
Z	B-Language
specification	O
written	O
in	O
LaTeX	B-Application
format	O
verifying	O
the	O
ISO	O
standard	O
.	O
</s>
<s>
In	O
a	O
third	O
step	O
Fastest	B-Application
generates	O
the	O
testing	O
tree	O
of	O
each	O
operation	O
.	O
</s>
<s>
Once	O
testing	O
trees	O
have	O
been	O
pruned	O
,	O
users	O
can	O
instruct	O
Fastest	B-Application
to	O
find	O
one	O
abstract	O
test	O
case	O
for	O
each	O
leaf	O
in	O
each	O
testing	O
tree	O
.	O
</s>
<s>
Currently	O
,	O
Fastest	B-Application
supports	O
the	O
following	O
testing	O
tactics	O
:	O
</s>
<s>
The	O
user	O
can	O
add	O
,	O
modify	O
and	O
delete	O
standard	O
partitions	O
for	O
any	O
predefined	O
Z	B-Language
mathematical	O
operator	O
by	O
simply	O
editing	O
a	O
text	O
file	O
.	O
</s>
<s>
Fastest	B-Application
provides	O
two	O
ways	O
of	O
pruning	O
testing	O
trees	O
:	O
</s>
<s>
To	O
prune	O
a	O
testing	O
tree	O
,	O
Fastest	B-Application
analyzes	O
the	O
predicate	O
of	O
each	O
leaf	O
to	O
determine	O
if	O
the	O
predicate	O
is	O
a	O
contradiction	O
or	O
not	O
.	O
</s>
<s>
Since	O
this	O
problem	O
is	O
undecidable	O
,	O
the	O
tool	O
implements	B-Language
a	O
best-effort	O
algorithm	O
that	O
can	O
be	O
improved	O
by	O
users	O
.	O
</s>
<s>
Elimination	O
theorems	O
are	O
conjunctions	O
of	O
parametric	O
Z	B-Language
atomic	O
predicates	O
.	O
</s>
<s>
Fastest	B-Application
users	O
can	O
prune	O
subtrees	O
or	O
individual	O
leaves	O
of	O
testing	O
trees	O
by	O
issuing	O
two	O
commands	O
.	O
</s>
<s>
Fastest	B-Application
is	O
a	O
Java	B-Language
application	O
based	O
on	O
the	O
Community	B-Language
Z	I-Language
Tools	I-Language
(	O
CZT	O
)	O
project	O
.	O
</s>
<s>
In	O
distributed	O
mode	O
Fastest	B-Application
works	O
as	O
a	O
client	B-Operating_System
–	I-Operating_System
server	I-Operating_System
application	O
.	O
</s>
<s>
In	O
application	O
mode	O
each	O
instance	O
of	O
Fastest	B-Application
is	O
completely	O
independent	O
of	O
each	O
other	O
.	O
</s>
<s>
In	O
Fastest	B-Application
users	O
can	O
add	O
testing	O
tactics	O
of	O
their	O
own	O
by	O
implementing	O
the	O
Tactic	O
interface	B-Language
provided	O
by	O
the	O
tool	O
.	O
</s>
<s>
This	O
interface	B-Language
has	O
methods	O
to	O
configure	O
and	O
apply	O
testing	O
tactics	O
.	O
</s>
<s>
The	O
interface	B-Language
definition	O
is	O
the	O
following	O
:	O
</s>
