How to debug infinite simp loop in Isabelle

Is there a nice way to print what the simplifier (apply clarsimp, for example) is doing when it goes into an infinite loop?

Meaning of isabelle clarsimp/fastforce’s background turning light red

Image to fastforce with light red background

Bad session in Isabelle

I am trying to run Incompleteness from afp-2019-08-19 on Isabelle2023. When I open the ROOT file

Define evaluable inductive predicate for a record and set

I’m trying to define an inductive predicate for some graph calculations:

Is it ok that if a datatype’s constructors are same with another one?

difinition as fowlow:

How to describe a dataabase in Isabelle?

1.define the structures the databases and tables.