handle Vampire [predicate definition introduction] steps the same way as missing proof, since such steps do not report which axioms were used
--- a/src/HOL/Tools/ATP/atp_systems.ML Wed Apr 13 21:38:00 2011 +0200
+++ b/src/HOL/Tools/ATP/atp_systems.ML Thu Apr 14 11:24:04 2011 +0200
@@ -220,6 +220,8 @@
known_failures =
[(Unprovable, "UNPROVABLE"),
(IncompleteUnprovable, "CANNOT PROVE"),
+ (ProofMissing, "[predicate definition introduction]"),
+ (ProofMissing, "predicate_definition_introduction,[]"), (* TSTP *)
(TimedOut, "SZS status Timeout"),
(Unprovable, "Satisfiability detected"),
(Unprovable, "Termination reason: Satisfiable"),