Update error message for invariant checking

2022-12-09 16:11:57 +01:00 · 2022-12-09 16:11:57 +01:00 · 0b2d28b547
parent 37d7ed7d17
commit 0b2d28b547
1 changed files with 3 additions and 1 deletions
--- a/src/DOF/Isa_DOF.thy
+++ b/src/DOF/Isa_DOF.thy
@ -1622,7 +1622,9 @@ fun check_invariants thy oid =
                         (* If Goal.prove does not fail, then the evaluation is considered True,
                            else an error is triggered by Goal.prove *)
                         in @{term True} end)
-                   else ISA_core.err ("Invariant " ^ inv_name ^ " violated." ) pos
+                   else ISA_core.err ("Fail to check invariant "
+                                      ^ inv_name
+                                      ^ ". Try to activate invariants_checking_with_tactics.") pos
      in (if evaluated_term = \<^term>\<open>True\<close>
          then ((inv_name, pos), term)
          else ISA_core.err ("Invariant " ^ inv_name ^ " violated") pos)