(* Title: HOL/ATP.thy
Author: Fabian Immler, TU Muenchen
Author: Jasmin Blanchette, TU Muenchen
Author: Martin Desharnais, UniBw Muenchen
*)
section ‹Automatic
Theorem Provers (ATPs)
›
theory ATP
imports Meson Hilbert_Choice
begin
subsection ‹ATP problems
and proofs
›
ML_file
‹Tools/ATP/atp_util.ML
›
ML_file
‹Tools/ATP/atp_problem.ML
›
ML_file
‹Tools/ATP/atp_proof.ML
›
ML_file
‹Tools/ATP/atp_proof_redirect.ML
›
subsection ‹Higher-order reasoning helpers
›
definition fFalse :: bool
where
"fFalse \ False"
definition fTrue :: bool
where
"fTrue \ True"
definition fNot ::
"bool \ bool" where
"fNot P \ \ P"
definition fComp ::
"('a \ bool) \ 'a \ bool" where
"fComp P = (\x. \ P x)"
definition fconj ::
"bool \ bool \ bool" where
"fconj P Q \ P \ Q"
definition fdisj ::
"bool \ bool \ bool" where
"fdisj P Q \ P \ Q"
definition fimplies ::
"bool \ bool \ bool" where
"fimplies P Q \ (P \ Q)"
definition fAll ::
"('a \ bool) \ bool" where
"fAll P \ All P"
definition fEx ::
"('a \ bool) \ bool" where
"fEx P \ Ex P"
definition fequal ::
"'a \ 'a \ bool" where
"fequal x y \ (x = y)"
definition fChoice ::
"('a \ bool) \ 'a" where
"fChoice \ Hilbert_Choice.Eps"
lemma fTrue_ne_fFalse:
"fFalse \ fTrue"
unfolding fFalse_def fTrue_def
by simp
lemma fNot_table:
"fNot fFalse = fTrue"
"fNot fTrue = fFalse"
unfolding fFalse_def fTrue_def fNot_def
by auto
lemma fconj_table:
"fconj fFalse P = fFalse"
"fconj P fFalse = fFalse"
"fconj fTrue fTrue = fTrue"
unfolding fFalse_def fTrue_def fconj_def
by auto
lemma fdisj_table:
"fdisj fTrue P = fTrue"
"fdisj P fTrue = fTrue"
"fdisj fFalse fFalse = fFalse"
unfolding fFalse_def fTrue_def fdisj_def
by auto
lemma fimplies_table:
"fimplies P fTrue = fTrue"
"fimplies fFalse P = fTrue"
"fimplies fTrue fFalse = fFalse"
unfolding fFalse_def fTrue_def fimplies_def
by auto
lemma fAll_table:
"Ex (fComp P) \ fAll P = fTrue"
"All P \ fAll P = fFalse"
unfolding fFalse_def fTrue_def fComp_def fAll_def
by auto
lemma fEx_table:
"All (fComp P) \ fEx P = fTrue"
"Ex P \ fEx P = fFalse"
unfolding fFalse_def fTrue_def fComp_def fEx_def
by auto
lemma fequal_table:
"fequal x x = fTrue"
"x = y \ fequal x y = fFalse"
unfolding fFalse_def fTrue_def fequal_def
by auto
lemma fNot_law:
"fNot P \ P"
unfolding fNot_def
by auto
lemma fComp_law:
"fComp P x \ \ P x"
unfolding fComp_def ..
lemma fconj_laws:
"fconj P P \ P"
"fconj P Q \ fconj Q P"
"fNot (fconj P Q) \ fdisj (fNot P) (fNot Q)"
unfolding fNot_def fconj_def fdisj_def
by auto
lemma fdisj_laws:
"fdisj P P \ P"
"fdisj P Q \ fdisj Q P"
"fNot (fdisj P Q) \ fconj (fNot P) (fNot Q)"
unfolding fNot_def fconj_def fdisj_def
by auto
lemma fimplies_laws:
"fimplies P Q \ fdisj (\ P) Q"
"fNot (fimplies P Q) \ fconj P (fNot Q)"
unfolding fNot_def fconj_def fdisj_def fimplies_def
by auto
lemma fAll_law:
"fNot (fAll R) \ fEx (fComp R)"
unfolding fNot_def fComp_def fAll_def fEx_def
by auto
lemma fEx_law:
"fNot (fEx R) \ fAll (fComp R)"
unfolding fNot_def fComp_def fAll_def fEx_def
by auto
lemma fequal_laws:
"fequal x y = fequal y x"
"fequal x y = fFalse \ fequal y z = fFalse \ fequal x z = fTrue"
"fequal x y = fFalse \ fequal (f x) (f y) = fTrue"
unfolding fFalse_def fTrue_def fequal_def
by auto
lemma fChoice_iff_Ex:
"P (fChoice P) \ HOL.Ex P"
unfolding fChoice_def
by (fact some_eq_ex)
text ‹
We
use the @{const HOL.Ex} constant on the right-hand side of @{
thm [source] fChoice_iff_Ex} b
ecause
we want to use the TPTP-native version if fChoice is introduced in a logic that supports FOOL.
In logics that don't support it, it gets replaced by fEx during processing.
Notice that we cannot use @{term "\x. P x"}, as existentials are not skolimized by the metis proof
method but @{term "Ex P"} is eta-expanded if FOOL is supported.›
subsection ‹Basic connection between ATPs and HOL›
ML_file ‹Tools/lambda_lifting.ML›
ML_file ‹Tools/monomorph.ML›
ML_file ‹Tools/ATP/atp_problem_generate.ML›
ML_file ‹Tools/ATP/atp_proof_reconstruct.ML›
end