From dfff69ef604e02703575cb1cb15b2f77eda5f0f4 Mon Sep 17 00:00:00 2001
From: Frédéric Besson
Date: Thu, 28 Mar 2019 15:24:33 +0100
Subject: Re-implementation of zify

The logic is implemented in OCaml. By induction over the terms,
guided by registered Coq terms in ZifyInst.v, it generates a rewriting
lemma. The rewriting is only performed if there is some progress.  If
the rewriting fails (due to dependencies), a novel hypothesis is
generated.

This PR fixes #5155, fixes #8898, fixes #7886, fixes #10707, fixes #9848
ans fixes #10755.

The zify plugin is placed in the micromega directory.
(Though the reason is unclear, having it in a separate directory is
bad for efficiency.)  efficiency impact.

There are also a few improvements of lia/lra that are piggybacked.
- more aggressive pruning of useless hypotheses
- slightly optimised conjunctive normal form
- applies exfalso if conclusion is not in Prop
- removal of Timeout in test-suite
---
 plugins/micromega/zify_plugin.mlpack | 2 ++
 1 file changed, 2 insertions(+)
 create mode 100644 plugins/micromega/zify_plugin.mlpack

(limited to 'plugins/micromega/zify_plugin.mlpack')

diff --git a/plugins/micromega/zify_plugin.mlpack b/plugins/micromega/zify_plugin.mlpack
new file mode 100644
index 0000000000..8d301b53c4
--- /dev/null
+++ b/plugins/micromega/zify_plugin.mlpack
@@ -0,0 +1,2 @@
+Zify
+G_zify
-- 
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