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(* Title: HOL/Tools/ATP/atp_proof_reconstruct.ML |
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Author: Lawrence C. Paulson, Cambridge University Computer Laboratory |
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Author: Claire Quigley, Cambridge University Computer Laboratory |
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Author: Jasmin Blanchette, TU Muenchen |
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Basic proof reconstruction from ATP proofs. |
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*) |
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signature ATP_PROOF_RECONSTRUCT = |
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sig |
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type ('a, 'b) ho_term = ('a, 'b) ATP_Problem.ho_term |
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type ('a, 'b, 'c, 'd) formula = ('a, 'b, 'c, 'd) ATP_Problem.formula |
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val metisN : string |
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val full_typesN : string |
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val partial_typesN : string |
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val no_typesN : string |
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val really_full_type_enc : string |
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val full_type_enc : string |
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val partial_type_enc : string |
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val no_type_enc : string |
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val full_type_encs : string list |
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val partial_type_encs : string list |
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val metis_default_lam_trans : string |
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val metis_call : string -> string -> string |
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val forall_of : term -> term -> term |
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val exists_of : term -> term -> term |
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val unalias_type_enc : string -> string list |
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val term_of_atp : |
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Proof.context -> bool -> int Symtab.table -> typ option -> |
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(string, string) ho_term -> term |
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val prop_of_atp : |
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Proof.context -> bool -> int Symtab.table -> |
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(string, string, (string, string) ho_term, string) formula -> term |
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end; |
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structure ATP_Proof_Reconstruct : ATP_PROOF_RECONSTRUCT = |
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struct |
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open ATP_Util |
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open ATP_Problem |
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open ATP_Proof |
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open ATP_Problem_Generate |
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val metisN = "metis" |
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val full_typesN = "full_types" |
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val partial_typesN = "partial_types" |
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val no_typesN = "no_types" |
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val really_full_type_enc = "mono_tags" |
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val full_type_enc = "poly_guards_query" |
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val partial_type_enc = "poly_args" |
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val no_type_enc = "erased" |
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val full_type_encs = [full_type_enc, really_full_type_enc] |
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val partial_type_encs = partial_type_enc :: full_type_encs |
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val type_enc_aliases = |
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[(full_typesN, full_type_encs), |
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(partial_typesN, partial_type_encs), |
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(no_typesN, [no_type_enc])] |
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fun unalias_type_enc s = |
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AList.lookup (op =) type_enc_aliases s |> the_default [s] |
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val metis_default_lam_trans = combsN |
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fun metis_call type_enc lam_trans = |
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let |
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val type_enc = |
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case AList.find (fn (enc, encs) => enc = hd encs) type_enc_aliases |
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type_enc of |
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[alias] => alias |
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| _ => type_enc |
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val opts = [] |> type_enc <> partial_typesN ? cons type_enc |
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|> lam_trans <> metis_default_lam_trans ? cons lam_trans |
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in metisN ^ (if null opts then "" else " (" ^ commas opts ^ ")") end |
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fun term_name' (Var ((s, _), _)) = perhaps (try Name.dest_skolem) s |
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| term_name' _ = "" |
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fun lambda' v = Term.lambda_name (term_name' v, v) |
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fun forall_of v t = HOLogic.all_const (fastype_of v) $ lambda' v t |
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fun exists_of v t = HOLogic.exists_const (fastype_of v) $ lambda' v t |
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fun make_tfree ctxt w = |
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let val ww = "'" ^ w in |
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TFree (ww, the_default HOLogic.typeS (Variable.def_sort ctxt (ww, ~1))) |
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end |
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exception HO_TERM of (string, string) ho_term list |
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exception FORMULA of |
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(string, string, (string, string) ho_term, string) formula list |
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exception SAME of unit |
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(* Type variables are given the basic sort "HOL.type". Some will later be |
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constrained by information from type literals, or by type inference. *) |
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fun typ_of_atp ctxt (u as ATerm ((a, _), us)) = |
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let val Ts = map (typ_of_atp ctxt) us in |
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case unprefix_and_unascii type_const_prefix a of |
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SOME b => Type (invert_const b, Ts) |
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| NONE => |
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if not (null us) then |
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raise HO_TERM [u] (* only "tconst"s have type arguments *) |
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else case unprefix_and_unascii tfree_prefix a of |
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SOME b => make_tfree ctxt b |
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| NONE => |
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(* Could be an Isabelle variable or a variable from the ATP, say "X1" |
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or "_5018". Sometimes variables from the ATP are indistinguishable |
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from Isabelle variables, which forces us to use a type parameter in |
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all cases. *) |
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(a |> perhaps (unprefix_and_unascii tvar_prefix), HOLogic.typeS) |
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|> Type_Infer.param 0 |
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end |
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(* Type class literal applied to a type. Returns triple of polarity, class, |
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type. *) |
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fun type_constraint_of_term ctxt (u as ATerm ((a, _), us)) = |
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case (unprefix_and_unascii class_prefix a, map (typ_of_atp ctxt) us) of |
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(SOME b, [T]) => (b, T) |
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| _ => raise HO_TERM [u] |
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(* Accumulate type constraints in a formula: negative type literals. *) |
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fun add_var (key, z) = Vartab.map_default (key, []) (cons z) |
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fun add_type_constraint false (cl, TFree (a ,_)) = add_var ((a, ~1), cl) |
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| add_type_constraint false (cl, TVar (ix, _)) = add_var (ix, cl) |
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| add_type_constraint _ _ = I |
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fun repair_var_name s = |
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let |
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fun subscript_name s n = s ^ nat_subscript n |
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val s = s |> String.map Char.toLower |
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in |
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case space_explode "_" s of |
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[_] => (case take_suffix Char.isDigit (String.explode s) of |
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(cs1 as _ :: _, cs2 as _ :: _) => |
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subscript_name (String.implode cs1) |
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(the (Int.fromString (String.implode cs2))) |
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| (_, _) => s) |
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| [s1, s2] => (case Int.fromString s2 of |
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SOME n => subscript_name s1 n |
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| NONE => s) |
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| _ => s |
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end |
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(* The number of type arguments of a constant, zero if it's monomorphic. For |
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(instances of) Skolem pseudoconstants, this information is encoded in the |
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parents:
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diff
changeset
|
150 |
constant name. *) |
073ab5379842
pass type arguments to lambda-lifted Frees, to account for polymorphism
blanchet
parents:
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diff
changeset
|
151 |
fun num_type_args thy s = |
073ab5379842
pass type arguments to lambda-lifted Frees, to account for polymorphism
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parents:
43863
diff
changeset
|
152 |
if String.isPrefix skolem_const_prefix s then |
46711
f745bcc4a1e5
more explicit Long_Name operations (NB: analyzing qualifiers is inherently fragile);
wenzelm
parents:
46435
diff
changeset
|
153 |
s |> Long_Name.explode |> List.last |> Int.fromString |> the |
45554
09ad83de849c
don't pass "lam_lifted" option to "metis" unless there's a good reason
blanchet
parents:
45553
diff
changeset
|
154 |
else if String.isPrefix lam_lifted_prefix s then |
09ad83de849c
don't pass "lam_lifted" option to "metis" unless there's a good reason
blanchet
parents:
45553
diff
changeset
|
155 |
if String.isPrefix lam_lifted_poly_prefix s then 2 else 0 |
43907
073ab5379842
pass type arguments to lambda-lifted Frees, to account for polymorphism
blanchet
parents:
43863
diff
changeset
|
156 |
else |
073ab5379842
pass type arguments to lambda-lifted Frees, to account for polymorphism
blanchet
parents:
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diff
changeset
|
157 |
(s, Sign.the_const_type thy s) |> Sign.const_typargs thy |> length |
073ab5379842
pass type arguments to lambda-lifted Frees, to account for polymorphism
blanchet
parents:
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diff
changeset
|
158 |
|
43182
649bada59658
slacker version of "fastype_of", in case a function has dummy type
blanchet
parents:
43176
diff
changeset
|
159 |
fun slack_fastype_of t = fastype_of t handle TERM _ => HOLogic.typeT |
649bada59658
slacker version of "fastype_of", in case a function has dummy type
blanchet
parents:
43176
diff
changeset
|
160 |
|
51192
4dc6bb65c3c3
slacker comparison for Skolems, to avoid trivial equations
blanchet
parents:
50704
diff
changeset
|
161 |
(* Cope with "tt(X) = X" atoms, where "X" is existentially quantified. *) |
4dc6bb65c3c3
slacker comparison for Skolems, to avoid trivial equations
blanchet
parents:
50704
diff
changeset
|
162 |
fun loose_aconv (Free (s, _), Free (s', _)) = s = s' |
4dc6bb65c3c3
slacker comparison for Skolems, to avoid trivial equations
blanchet
parents:
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diff
changeset
|
163 |
| loose_aconv (t, t') = t aconv t' |
4dc6bb65c3c3
slacker comparison for Skolems, to avoid trivial equations
blanchet
parents:
50704
diff
changeset
|
164 |
|
50703
76a2e506c125
swap Vampire's Skolem arguments to bring them in line with what E and metis's new skolemizer do (helps Isar proof reconstruction in some cases)
blanchet
parents:
50693
diff
changeset
|
165 |
val vampire_skolem_prefix = "sK" |
76a2e506c125
swap Vampire's Skolem arguments to bring them in line with what E and metis's new skolemizer do (helps Isar proof reconstruction in some cases)
blanchet
parents:
50693
diff
changeset
|
166 |
|
36909
7d5587f6d5f7
made Sledgehammer's full-typed proof reconstruction work for the first time;
blanchet
parents:
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diff
changeset
|
167 |
(* First-order translation. No types are known for variables. "HOLogic.typeT" |
38014 | 168 |
should allow them to be inferred. *) |
52031
9a9238342963
tuning -- renamed '_from_' to '_of_' in Sledgehammer
blanchet
parents:
51878
diff
changeset
|
169 |
fun term_of_atp ctxt textual sym_tab = |
36909
7d5587f6d5f7
made Sledgehammer's full-typed proof reconstruction work for the first time;
blanchet
parents:
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diff
changeset
|
170 |
let |
43135
8c32a0160b0d
more uniform handling of tfree sort inference in ATP reconstruction code, based on what Metis always has done
blanchet
parents:
43131
diff
changeset
|
171 |
val thy = Proof_Context.theory_of ctxt |
43212 | 172 |
(* For Metis, we use 1 rather than 0 because variable references in clauses |
173 |
may otherwise conflict with variable constraints in the goal. At least, |
|
174 |
type inference often fails otherwise. See also "axiom_inference" in |
|
175 |
"Metis_Reconstruct". *) |
|
43094 | 176 |
val var_index = if textual then 0 else 1 |
43131
9e9420122f91
fixed interaction between type tags and hAPP in reconstruction code
blanchet
parents:
43130
diff
changeset
|
177 |
fun do_term extra_ts opt_T u = |
36909
7d5587f6d5f7
made Sledgehammer's full-typed proof reconstruction work for the first time;
blanchet
parents:
36607
diff
changeset
|
178 |
case u of |
48132
9aa0fad4e864
added type arguments to "ATerm" constructor -- but don't use them yet
blanchet
parents:
48085
diff
changeset
|
179 |
ATerm ((s, _), us) => |
51878 | 180 |
if s = "" |
181 |
then error "Isar proof reconstruction failed because the ATP proof contained unparsable material." |
|
182 |
else if String.isPrefix native_type_prefix s then |
|
42962
3b50fdeb6cfc
started adding support for THF output (but no lambdas)
blanchet
parents:
42943
diff
changeset
|
183 |
@{const True} (* ignore TPTP type information *) |
44773
e701dabbfe37
perform mangling before computing symbol arity, to avoid needless "hAPP"s and "hBOOL"s
blanchet
parents:
44399
diff
changeset
|
184 |
else if s = tptp_equal then |
43093 | 185 |
let val ts = map (do_term [] NONE) us in |
43094 | 186 |
if textual andalso length ts = 2 andalso |
51192
4dc6bb65c3c3
slacker comparison for Skolems, to avoid trivial equations
blanchet
parents:
50704
diff
changeset
|
187 |
loose_aconv (hd ts, List.last ts) then |
39106 | 188 |
@{const True} |
189 |
else |
|
190 |
list_comb (Const (@{const_name HOL.eq}, HOLogic.typeT), ts) |
|
191 |
end |
|
45511
9b0f8ca4388e
continued implementation of lambda-lifting in Metis
blanchet
parents:
45379
diff
changeset
|
192 |
else case unprefix_and_unascii const_prefix s of |
44773
e701dabbfe37
perform mangling before computing symbol arity, to avoid needless "hAPP"s and "hBOOL"s
blanchet
parents:
44399
diff
changeset
|
193 |
SOME s' => |
42761
8ea9c6fa8b53
fixed several bugs in Isar proof reconstruction, in particular w.r.t. mangled types and hAPP
blanchet
parents:
42759
diff
changeset
|
194 |
let |
44773
e701dabbfe37
perform mangling before computing symbol arity, to avoid needless "hAPP"s and "hBOOL"s
blanchet
parents:
44399
diff
changeset
|
195 |
val ((s', s''), mangled_us) = |
e701dabbfe37
perform mangling before computing symbol arity, to avoid needless "hAPP"s and "hBOOL"s
blanchet
parents:
44399
diff
changeset
|
196 |
s' |> unmangled_const |>> `invert_const |
42761
8ea9c6fa8b53
fixed several bugs in Isar proof reconstruction, in particular w.r.t. mangled types and hAPP
blanchet
parents:
42759
diff
changeset
|
197 |
in |
42755
4603154a3018
robustly detect how many type args were passed to the ATP, even if some of them were omitted
blanchet
parents:
42751
diff
changeset
|
198 |
if s' = type_tag_name then |
42589
9f7c48463645
restructured type systems some more -- the old naming schemes had "argshg diff |less" and "tagshg diff |less" as equivalent and didn't support a monomorphic version of "tags"
blanchet
parents:
42587
diff
changeset
|
199 |
case mangled_us @ us of |
9f7c48463645
restructured type systems some more -- the old naming schemes had "argshg diff |less" and "tagshg diff |less" as equivalent and didn't support a monomorphic version of "tags"
blanchet
parents:
42587
diff
changeset
|
200 |
[typ_u, term_u] => |
52031
9a9238342963
tuning -- renamed '_from_' to '_of_' in Sledgehammer
blanchet
parents:
51878
diff
changeset
|
201 |
do_term extra_ts (SOME (typ_of_atp ctxt typ_u)) term_u |
43678 | 202 |
| _ => raise HO_TERM us |
42966
4e2d6c1e5392
more work on parsing LEO-II proofs without lambdas
blanchet
parents:
42962
diff
changeset
|
203 |
else if s' = predicator_name then |
43093 | 204 |
do_term [] (SOME @{typ bool}) (hd us) |
42966
4e2d6c1e5392
more work on parsing LEO-II proofs without lambdas
blanchet
parents:
42962
diff
changeset
|
205 |
else if s' = app_op_name then |
43131
9e9420122f91
fixed interaction between type tags and hAPP in reconstruction code
blanchet
parents:
43130
diff
changeset
|
206 |
let val extra_t = do_term [] NONE (List.last us) in |
9e9420122f91
fixed interaction between type tags and hAPP in reconstruction code
blanchet
parents:
43130
diff
changeset
|
207 |
do_term (extra_t :: extra_ts) |
9e9420122f91
fixed interaction between type tags and hAPP in reconstruction code
blanchet
parents:
43130
diff
changeset
|
208 |
(case opt_T of |
43182
649bada59658
slacker version of "fastype_of", in case a function has dummy type
blanchet
parents:
43176
diff
changeset
|
209 |
SOME T => SOME (slack_fastype_of extra_t --> T) |
43131
9e9420122f91
fixed interaction between type tags and hAPP in reconstruction code
blanchet
parents:
43130
diff
changeset
|
210 |
| NONE => NONE) |
9e9420122f91
fixed interaction between type tags and hAPP in reconstruction code
blanchet
parents:
43130
diff
changeset
|
211 |
(nth us (length us - 2)) |
9e9420122f91
fixed interaction between type tags and hAPP in reconstruction code
blanchet
parents:
43130
diff
changeset
|
212 |
end |
44396
66b9b3fcd608
started cleaning up polymorphic monotonicity-based encodings, based on discussions with Nick Smallbone
blanchet
parents:
44121
diff
changeset
|
213 |
else if s' = type_guard_name then |
42551
cd99d6d3027a
reconstruct TFF type predicates correctly for ToFoF
blanchet
parents:
42549
diff
changeset
|
214 |
@{const True} (* ignore type predicates *) |
42549
b9754f26c7bc
handle special constants correctly in Isar proof reconstruction code, especially type predicates
blanchet
parents:
42544
diff
changeset
|
215 |
else |
b9754f26c7bc
handle special constants correctly in Isar proof reconstruction code, especially type predicates
blanchet
parents:
42544
diff
changeset
|
216 |
let |
44773
e701dabbfe37
perform mangling before computing symbol arity, to avoid needless "hAPP"s and "hBOOL"s
blanchet
parents:
44399
diff
changeset
|
217 |
val new_skolem = String.isPrefix new_skolem_const_prefix s'' |
42755
4603154a3018
robustly detect how many type args were passed to the ATP, even if some of them were omitted
blanchet
parents:
42751
diff
changeset
|
218 |
val num_ty_args = |
4603154a3018
robustly detect how many type args were passed to the ATP, even if some of them were omitted
blanchet
parents:
42751
diff
changeset
|
219 |
length us - the_default 0 (Symtab.lookup sym_tab s) |
42549
b9754f26c7bc
handle special constants correctly in Isar proof reconstruction code, especially type predicates
blanchet
parents:
42544
diff
changeset
|
220 |
val (type_us, term_us) = |
b9754f26c7bc
handle special constants correctly in Isar proof reconstruction code, especially type predicates
blanchet
parents:
42544
diff
changeset
|
221 |
chop num_ty_args us |>> append mangled_us |
43093 | 222 |
val term_ts = map (do_term [] NONE) term_us |
42549
b9754f26c7bc
handle special constants correctly in Isar proof reconstruction code, especially type predicates
blanchet
parents:
42544
diff
changeset
|
223 |
val T = |
43183
faece9668bce
don't throw exception on unknown constants (e.g. skolems), and give more precise type to applied functions
blanchet
parents:
43182
diff
changeset
|
224 |
(if not (null type_us) andalso |
faece9668bce
don't throw exception on unknown constants (e.g. skolems), and give more precise type to applied functions
blanchet
parents:
43182
diff
changeset
|
225 |
num_type_args thy s' = length type_us then |
52031
9a9238342963
tuning -- renamed '_from_' to '_of_' in Sledgehammer
blanchet
parents:
51878
diff
changeset
|
226 |
let val Ts = type_us |> map (typ_of_atp ctxt) in |
43191
0a72c0527111
fixed reconstruction of new Skolem constants in new Metis
blanchet
parents:
43184
diff
changeset
|
227 |
if new_skolem then |
0a72c0527111
fixed reconstruction of new Skolem constants in new Metis
blanchet
parents:
43184
diff
changeset
|
228 |
SOME (Type_Infer.paramify_vars (tl Ts ---> hd Ts)) |
43200
ca7b0a48515d
imported patch metis_reconstr_give_type_infer_a_chance
blanchet
parents:
43199
diff
changeset
|
229 |
else if textual then |
ca7b0a48515d
imported patch metis_reconstr_give_type_infer_a_chance
blanchet
parents:
43199
diff
changeset
|
230 |
try (Sign.const_instance thy) (s', Ts) |
43191
0a72c0527111
fixed reconstruction of new Skolem constants in new Metis
blanchet
parents:
43184
diff
changeset
|
231 |
else |
43200
ca7b0a48515d
imported patch metis_reconstr_give_type_infer_a_chance
blanchet
parents:
43199
diff
changeset
|
232 |
NONE |
43191
0a72c0527111
fixed reconstruction of new Skolem constants in new Metis
blanchet
parents:
43184
diff
changeset
|
233 |
end |
43183
faece9668bce
don't throw exception on unknown constants (e.g. skolems), and give more precise type to applied functions
blanchet
parents:
43182
diff
changeset
|
234 |
else |
faece9668bce
don't throw exception on unknown constants (e.g. skolems), and give more precise type to applied functions
blanchet
parents:
43182
diff
changeset
|
235 |
NONE) |
faece9668bce
don't throw exception on unknown constants (e.g. skolems), and give more precise type to applied functions
blanchet
parents:
43182
diff
changeset
|
236 |
|> (fn SOME T => T |
faece9668bce
don't throw exception on unknown constants (e.g. skolems), and give more precise type to applied functions
blanchet
parents:
43182
diff
changeset
|
237 |
| NONE => map slack_fastype_of term_ts ---> |
faece9668bce
don't throw exception on unknown constants (e.g. skolems), and give more precise type to applied functions
blanchet
parents:
43182
diff
changeset
|
238 |
(case opt_T of |
faece9668bce
don't throw exception on unknown constants (e.g. skolems), and give more precise type to applied functions
blanchet
parents:
43182
diff
changeset
|
239 |
SOME T => T |
faece9668bce
don't throw exception on unknown constants (e.g. skolems), and give more precise type to applied functions
blanchet
parents:
43182
diff
changeset
|
240 |
| NONE => HOLogic.typeT)) |
43191
0a72c0527111
fixed reconstruction of new Skolem constants in new Metis
blanchet
parents:
43184
diff
changeset
|
241 |
val t = |
0a72c0527111
fixed reconstruction of new Skolem constants in new Metis
blanchet
parents:
43184
diff
changeset
|
242 |
if new_skolem then |
52031
9a9238342963
tuning -- renamed '_from_' to '_of_' in Sledgehammer
blanchet
parents:
51878
diff
changeset
|
243 |
Var ((new_skolem_var_name_of_const s'', var_index), T) |
43191
0a72c0527111
fixed reconstruction of new Skolem constants in new Metis
blanchet
parents:
43184
diff
changeset
|
244 |
else |
0a72c0527111
fixed reconstruction of new Skolem constants in new Metis
blanchet
parents:
43184
diff
changeset
|
245 |
Const (unproxify_const s', T) |
0a72c0527111
fixed reconstruction of new Skolem constants in new Metis
blanchet
parents:
43184
diff
changeset
|
246 |
in list_comb (t, term_ts @ extra_ts) end |
42549
b9754f26c7bc
handle special constants correctly in Isar proof reconstruction code, especially type predicates
blanchet
parents:
42544
diff
changeset
|
247 |
end |
36909
7d5587f6d5f7
made Sledgehammer's full-typed proof reconstruction work for the first time;
blanchet
parents:
36607
diff
changeset
|
248 |
| NONE => (* a free or schematic variable *) |
7d5587f6d5f7
made Sledgehammer's full-typed proof reconstruction work for the first time;
blanchet
parents:
36607
diff
changeset
|
249 |
let |
50693 | 250 |
(* This assumes that distinct names are mapped to distinct names by |
251 |
"Variable.variant_frees". This does not hold in general but |
|
252 |
should hold for ATP-generated Skolem function names, since these |
|
253 |
end with a digit and "variant_frees" appends letters. *) |
|
50676
83b8a5a39709
generate "obtain" steps corresponding to skolemization inferences
blanchet
parents:
50670
diff
changeset
|
254 |
fun fresh_up s = |
83b8a5a39709
generate "obtain" steps corresponding to skolemization inferences
blanchet
parents:
50670
diff
changeset
|
255 |
[(s, ())] |> Variable.variant_frees ctxt [] |> hd |> fst |
50703
76a2e506c125
swap Vampire's Skolem arguments to bring them in line with what E and metis's new skolemizer do (helps Isar proof reconstruction in some cases)
blanchet
parents:
50693
diff
changeset
|
256 |
val term_ts = |
76a2e506c125
swap Vampire's Skolem arguments to bring them in line with what E and metis's new skolemizer do (helps Isar proof reconstruction in some cases)
blanchet
parents:
50693
diff
changeset
|
257 |
map (do_term [] NONE) us |
76a2e506c125
swap Vampire's Skolem arguments to bring them in line with what E and metis's new skolemizer do (helps Isar proof reconstruction in some cases)
blanchet
parents:
50693
diff
changeset
|
258 |
(* Vampire (2.6) passes arguments to Skolem functions in reverse |
76a2e506c125
swap Vampire's Skolem arguments to bring them in line with what E and metis's new skolemizer do (helps Isar proof reconstruction in some cases)
blanchet
parents:
50693
diff
changeset
|
259 |
order *) |
76a2e506c125
swap Vampire's Skolem arguments to bring them in line with what E and metis's new skolemizer do (helps Isar proof reconstruction in some cases)
blanchet
parents:
50693
diff
changeset
|
260 |
|> String.isPrefix vampire_skolem_prefix s ? rev |
45042
89341b897412
better type reconstruction -- prevents ill-instantiations in proof replay
blanchet
parents:
44783
diff
changeset
|
261 |
val ts = term_ts @ extra_ts |
89341b897412
better type reconstruction -- prevents ill-instantiations in proof replay
blanchet
parents:
44783
diff
changeset
|
262 |
val T = |
89341b897412
better type reconstruction -- prevents ill-instantiations in proof replay
blanchet
parents:
44783
diff
changeset
|
263 |
case opt_T of |
89341b897412
better type reconstruction -- prevents ill-instantiations in proof replay
blanchet
parents:
44783
diff
changeset
|
264 |
SOME T => map slack_fastype_of term_ts ---> T |
89341b897412
better type reconstruction -- prevents ill-instantiations in proof replay
blanchet
parents:
44783
diff
changeset
|
265 |
| NONE => map slack_fastype_of ts ---> HOLogic.typeT |
36909
7d5587f6d5f7
made Sledgehammer's full-typed proof reconstruction work for the first time;
blanchet
parents:
36607
diff
changeset
|
266 |
val t = |
45511
9b0f8ca4388e
continued implementation of lambda-lifting in Metis
blanchet
parents:
45379
diff
changeset
|
267 |
case unprefix_and_unascii fixed_var_prefix s of |
9b0f8ca4388e
continued implementation of lambda-lifting in Metis
blanchet
parents:
45379
diff
changeset
|
268 |
SOME s => Free (s, T) |
36909
7d5587f6d5f7
made Sledgehammer's full-typed proof reconstruction work for the first time;
blanchet
parents:
36607
diff
changeset
|
269 |
| NONE => |
45511
9b0f8ca4388e
continued implementation of lambda-lifting in Metis
blanchet
parents:
45379
diff
changeset
|
270 |
case unprefix_and_unascii schematic_var_prefix s of |
44773
e701dabbfe37
perform mangling before computing symbol arity, to avoid needless "hAPP"s and "hBOOL"s
blanchet
parents:
44399
diff
changeset
|
271 |
SOME s => Var ((s, var_index), T) |
36909
7d5587f6d5f7
made Sledgehammer's full-typed proof reconstruction work for the first time;
blanchet
parents:
36607
diff
changeset
|
272 |
| NONE => |
50676
83b8a5a39709
generate "obtain" steps corresponding to skolemization inferences
blanchet
parents:
50670
diff
changeset
|
273 |
if textual andalso not (is_tptp_variable s) then |
83b8a5a39709
generate "obtain" steps corresponding to skolemization inferences
blanchet
parents:
50670
diff
changeset
|
274 |
Free (s |> textual ? (repair_var_name #> fresh_up), T) |
83b8a5a39709
generate "obtain" steps corresponding to skolemization inferences
blanchet
parents:
50670
diff
changeset
|
275 |
else |
83b8a5a39709
generate "obtain" steps corresponding to skolemization inferences
blanchet
parents:
50670
diff
changeset
|
276 |
Var ((s |> textual ? repair_var_name, var_index), T) |
36909
7d5587f6d5f7
made Sledgehammer's full-typed proof reconstruction work for the first time;
blanchet
parents:
36607
diff
changeset
|
277 |
in list_comb (t, ts) end |
43093 | 278 |
in do_term [] end |
21978
72c21698a055
Contains old Tools/ATP/AtpCommunication.ML, plus proof reconstruction
paulson
parents:
diff
changeset
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279 |
|
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fun term_of_atom ctxt textual sym_tab pos (u as ATerm ((s, _), _)) = |
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if String.isPrefix class_prefix s then |
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add_type_constraint pos (type_constraint_of_term ctxt u) |
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#> pair @{const True} |
284 |
else |
|
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pair (term_of_atp ctxt textual sym_tab (SOME @{typ bool}) u) |
36402
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introduced direct proof reconstruction code, eliminating the need for the "neg_clausify" method;
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286 |
|
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(* Update schematic type variables with detected sort constraints. It's not |
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totally clear whether this code is necessary. *) |
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fun repair_tvar_sorts (t, tvar_tab) = |
36909
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made Sledgehammer's full-typed proof reconstruction work for the first time;
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let |
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fun do_type (Type (a, Ts)) = Type (a, map do_type Ts) |
292 |
| do_type (TVar (xi, s)) = |
|
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TVar (xi, the_default s (Vartab.lookup tvar_tab xi)) |
|
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| do_type (TFree z) = TFree z |
|
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fun do_term (Const (a, T)) = Const (a, do_type T) |
|
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| do_term (Free (a, T)) = Free (a, do_type T) |
|
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| do_term (Var (xi, T)) = Var (xi, do_type T) |
|
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| do_term (t as Bound _) = t |
|
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| do_term (Abs (a, T, t)) = Abs (a, do_type T, do_term t) |
|
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| do_term (t1 $ t2) = do_term t1 $ do_term t2 |
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in t |> not (Vartab.is_empty tvar_tab) ? do_term end |
|
302 |
||
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fun quantify_over_var quant_of var_s t = |
304 |
let |
|
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val vars = [] |> Term.add_vars t |> filter (fn ((s, _), _) => s = var_s) |
|
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|> map Var |
|
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in fold_rev quant_of vars t end |
|
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|
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(* Interpret an ATP formula as a HOL term, extracting sort constraints as they |
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appear in the formula. *) |
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311 |
fun prop_of_atp ctxt textual sym_tab phi = |
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let |
313 |
fun do_formula pos phi = |
|
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case phi of |
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AQuant (_, [], phi) => do_formula pos phi |
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| AQuant (q, (s, _) :: xs, phi') => |
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do_formula pos (AQuant (q, xs, phi')) |
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(* FIXME: TFF *) |
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#>> quantify_over_var |
320 |
(case q of AForall => forall_of | AExists => exists_of) |
|
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generate "obtain" steps corresponding to skolemization inferences
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321 |
(s |> textual ? repair_var_name) |
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| AConn (ANot, [phi']) => do_formula (not pos) phi' #>> s_not |
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| AConn (c, [phi1, phi2]) => |
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do_formula (pos |> c = AImplies ? not) phi1 |
325 |
##>> do_formula pos phi2 |
|
326 |
#>> (case c of |
|
327 |
AAnd => s_conj |
|
328 |
| AOr => s_disj |
|
329 |
| AImplies => s_imp |
|
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| AIff => s_iff |
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| ANot => raise Fail "impossible connective") |
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332 |
| AAtom tm => term_of_atom ctxt textual sym_tab pos tm |
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| _ => raise FORMULA [phi] |
38014 | 334 |
in repair_tvar_sorts (do_formula true phi Vartab.empty) end |
37991 | 335 |
|
31038 | 336 |
end; |