Do I miss something?
I defined a variable named "somelength"
On pin-pair "A", formula I wrote "=somelength"
On another pin-pair, "B", I use the variable in a formula like "=5000-somelength+/-100th"
The last formula is templated and used on several pin-pairs.
how can I get a violation on the first formula?
It is a definition of the value of the variable.
Second question about tuning.
Is it reasonable to get tuning constraints violations when the autorouter has plenty of space to tune?