id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
1024	Dummy derivative should be added only when there are no other derivatives.	Adrian Pop	Adrian Pop	"To summarize:  \\

- add dummy state only if there are no other states \\- in that case, use der($dummy) = 0  \\

Adrian, can you do this and check with the slow example you got, as well \\as with a fast-changing, purely algebraic model like: 
{{{model fastAlg
  Real x = Modelica.Math.sin(time*1e3);
end fastAlg; }}}

Cheers, \\Francesco"	defect	closed	critical				fixed		Adrian Pop Adrian Pop