(* Title: HOL/Metis.thy
Author: Lawrence C. Paulson, Cambridge University Computer Laboratory
Author: Jia Meng, Cambridge University Computer Laboratory and NICTA
Author: Jasmin Blanchette, TU Muenchen
*)
section \<open>Metis Proof Method\<close>
theory Metis
imports ATP
begin
ML_file "~~/src/Tools/Metis/metis.ML"
subsection \<open>Literal selection and lambda-lifting helpers\<close>
definition select :: "'a \<Rightarrow> 'a" where
"select = (\<lambda>x. x)"
lemma not_atomize: "(\<not> A \<Longrightarrow> False) \<equiv> Trueprop A"
by (cut_tac atomize_not [of "\<not> A"]) simp
lemma atomize_not_select: "(A \<Longrightarrow> select False) \<equiv> Trueprop (\<not> A)"
unfolding select_def by (rule atomize_not)
lemma not_atomize_select: "(\<not> A \<Longrightarrow> select False) \<equiv> Trueprop A"
unfolding select_def by (rule not_atomize)
lemma select_FalseI: "False \<Longrightarrow> select False" by simp
definition lambda :: "'a \<Rightarrow> 'a" where
"lambda = (\<lambda>x. x)"
lemma eq_lambdaI: "x \<equiv> y \<Longrightarrow> x \<equiv> lambda y"
unfolding lambda_def by assumption
subsection \<open>Metis package\<close>
ML_file "Tools/Metis/metis_generate.ML"
ML_file "Tools/Metis/metis_reconstruct.ML"
ML_file "Tools/Metis/metis_tactic.ML"
hide_const (open) select fFalse fTrue fNot fComp fconj fdisj fimplies fAll fEx fequal lambda
hide_fact (open) select_def not_atomize atomize_not_select not_atomize_select select_FalseI
fFalse_def fTrue_def fNot_def fconj_def fdisj_def fimplies_def fAll_def fEx_def fequal_def
fTrue_ne_fFalse fNot_table fconj_table fdisj_table fimplies_table fAll_table fEx_table
fequal_table fAll_table fEx_table fNot_law fComp_law fconj_laws fdisj_laws fimplies_laws
fequal_laws fAll_law fEx_law lambda_def eq_lambdaI
end