<s>
Symbolic	B-Application
trajectory	I-Application
evaluation	I-Application
(	O
STE	O
)	O
is	O
a	O
lattice-based	O
model	B-Application
checking	I-Application
technology	O
that	O
uses	O
a	O
form	O
of	O
symbolic	B-Application
simulation	I-Application
.	O
</s>
<s>
The	O
technique	O
uses	O
abstraction	B-Application
,	O
meaning	O
that	O
details	O
of	O
the	O
circuit	O
behaviour	O
are	O
removed	O
from	O
the	O
circuit	O
model	O
.	O
</s>
<s>
It	O
was	O
first	O
developed	O
by	O
Carl	O
Seger	O
and	O
Randy	O
Bryant	O
in	O
1995	O
as	O
an	O
alternative	O
to	O
"	O
classical	O
"	O
symbolic	O
model	B-Application
checking	I-Application
.	O
</s>
