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[Coq-Club] Should eauto progress leaving non-instantiated existential variables?


chronological Thread 
  • From: Paolo Herms <paolo.herms AT inria.fr>
  • To: coq-club AT inria.fr
  • Subject: [Coq-Club] Should eauto progress leaving non-instantiated existential variables?
  • Date: Wed, 30 Nov 2011 15:20:09 +0100

Hello,
I've got a real example which reduces to this one:

Definition True2  := True.
Definition def (u:unit) (P: Prop) := P.
Lemma lem u: def u True -> True2.
  auto. 
Save.
Hint Unfold def.
Hint Resolve lem.
Goal True2. 
  eauto. 
Fail Save.

I think the call to eauto shouldn't do anything here, as it cannot completely 
solve the goal. Or are there situations where you want this behaviour?

-- 
Paolo Herms
PhD Student - CEA Software Safety Lab. / INRIA ProVal Project
Paris, France





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