Represent at the highest level of
abstraction
Consists of
Domain of quantity
double gtime;
Correspondence between quantity and
action
Action: e.g. beginning and end of a
statement execution
e[i], i-th occurrence of e in an
execution
A: annotation, exactly one specified
for each quantity class
Axioms
Specified in 1st order logic: forall exists
GXI, a built-in global index denote
partial order of events
E.g. GXI.A(e1,1)=5, GXI.A(e1.2)=10,
GXI.A(e2.5)=10