--- a/src/HOL/Tools/SMT/smt_setup_solvers.ML Sat Jan 12 22:14:29 2013 +0100
+++ b/src/HOL/Tools/SMT/smt_setup_solvers.ML Sat Jan 12 23:07:21 2013 +0100
@@ -130,7 +130,8 @@
"applications.")
| Z3_Non_Commercial_Unknown =>
error ("The SMT solver Z3 is not activated. To activate it, set\n" ^
- "the environment variable " ^ quote flagN ^ " to " ^ quote "yes" ^ "." ^
+ "the environment variable " ^ quote flagN ^ " to " ^ quote "yes" ^ ",\n" ^
+ "and restart the Isabelle system." ^
(if getenv "Z3_COMPONENT" = "" then ""
else "\nSee also " ^ Path.print (Path.expand (Path.explode "$Z3_COMPONENT/etc/settings")))))