I would like to determine the parts of a model that are consuming the most CPU. To do this I have tried putting a counter into parts of the Modelica code, as shown in the example below:
model counter
discrete Integer[3] counter(each start = 0, each fixed = true);
Real y;
equation
if (time >= 0 and time < 5) then
counter[1] = pre(counter[1]) + 1;
counter[2] = pre(counter[2]);
counter[3] = pre(counter[3]);
y = 2 * time + 10;
elseif (time >= 5 and time < 10) then
counter[1] = pre(counter[1]);
counter[2] = pre(counter[2]) + 1;
counter[3] = pre(counter[3]);
y = 3 * time + 20;
else
counter[1] = pre(counter[1]);
counter[2] = pre(counter[2]);
counter[3] = pre(counter[3]) + 1;
y = 5 * time;
end if;
end counter;
As you can see in the 'Simulation Log' screenshot, Simulation Center generates an error after initialization (and presumably during integration) at time = 0. Can someone explain what it is happening and why? For example, why was counter[1]=pre(counter[1])+1 evaluated 7 times before the Error was generated?
And, if the approach above won't work, is there another way of counting how many times a branch of a conditional statement is executed during a simulation. 
