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(* Title: HOL/Tools/Sledgehammer/sledgehammer_mash.ML 
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Author: Jasmin Blanchette, TU Muenchen 
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Sledgehammer's machinelearningbased relevance filter (MaSh). 

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*) 

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signature SLEDGEHAMMER_MASH = 
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sig 
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type status = ATP_Problem_Generate.status 
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type stature = ATP_Problem_Generate.stature 
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type fact = Sledgehammer_Fact.fact 
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type fact_override = Sledgehammer_Fact.fact_override 
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type params = Sledgehammer_Provers.params 
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type relevance_fudge = Sledgehammer_Provers.relevance_fudge 
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type prover_result = Sledgehammer_Provers.prover_result 
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val trace : bool Config.T 
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val MaShN : string 
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val mepoN : string 
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val mashN : string 
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val meshN : string 
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val fact_filters : string list 
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val escape_meta : string > string 
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val escape_metas : string list > string 
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val unescape_meta : string > string 
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val unescape_metas : string > string list 

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val extract_query : string > string * string list 
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val nickname_of : thm > string 
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val suggested_facts : string list > ('a * thm) list > ('a * thm) list 
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val mesh_facts : 

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int > (('a * thm) list * ('a * thm) list) list > ('a * thm) list 

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val is_likely_tautology_or_too_meta : thm > bool 
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val theory_ord : theory * theory > order 
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val thm_ord : thm * thm > order 
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val features_of : 
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Proof.context > string > theory > status > term list > string list 

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val isabelle_dependencies_of : unit Symtab.table > thm > string list 
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val goal_of_thm : theory > thm > thm 
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val run_prover_for_mash : 
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Proof.context > params > string > fact list > thm > prover_result 
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val mash_CLEAR : Proof.context > unit 
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val mash_INIT : 
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Proof.context > bool 
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> (string * string list * string list * string list) list > unit 
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val mash_ADD : 
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Proof.context > bool 
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> (string * string list * string list * string list) list > unit 
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val mash_QUERY : 
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Proof.context > bool > int > string list * string list > string list 
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val mash_unlearn : Proof.context > unit 
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val mash_could_suggest_facts : unit > bool 
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val mash_can_suggest_facts : Proof.context > bool 
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val mash_suggest_facts : 
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Proof.context > params > string > int > term list > term 
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> ('a * thm) list > ('a * thm) list * ('a * thm) list 

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val mash_learn_proof : 
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Proof.context > params > string > term > ('a * thm) list > thm list 
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> unit 
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val mash_learn_thy : 
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Proof.context > params > theory > Time.time > fact list > string 
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val mash_learn : Proof.context > params > unit 
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val relevant_facts : 
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Proof.context > params > string > int > fact_override > term list 
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> term > fact list > fact list 
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val kill_learners : unit > unit 
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val running_learners : unit > unit 
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end; 
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structure Sledgehammer_MaSh : SLEDGEHAMMER_MASH = 
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struct 
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open ATP_Util 
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open ATP_Problem_Generate 
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open Sledgehammer_Util 
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open Sledgehammer_Fact 
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open Sledgehammer_Provers 
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open Sledgehammer_Minimize 
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open Sledgehammer_MePo 
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val trace = 
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Attrib.setup_config_bool @{binding sledgehammer_mash_trace} (K false) 
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fun trace_msg ctxt msg = if Config.get ctxt trace then tracing (msg ()) else () 
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val MaShN = "MaSh" 
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val mepoN = "mepo" 
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val mashN = "mash" 
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val meshN = "mesh" 
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val fact_filters = [meshN, mepoN, mashN] 
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fun mash_home () = getenv "MASH_HOME" 
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fun mash_state_dir () = 
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getenv "ISABELLE_HOME_USER" ^ "/mash" 
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> tap (Isabelle_System.mkdir o Path.explode) 
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fun mash_state_path () = mash_state_dir () ^ "/state" > Path.explode 
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(*** Isabelle helpers ***) 
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fun meta_char c = 
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if Char.isAlphaNum c orelse c = #"_" orelse c = #"." orelse c = #"(" orelse 
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c = #")" orelse c = #"," then 
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String.str c 
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else 
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(* fixed width, in case more digits follow *) 
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"\\" ^ stringN_of_int 3 (Char.ord c) 
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fun unmeta_chars accum [] = String.implode (rev accum) 
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 unmeta_chars accum (#"\\" :: d1 :: d2 :: d3 :: cs) = 

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(case Int.fromString (String.implode [d1, d2, d3]) of 

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SOME n => unmeta_chars (Char.chr n :: accum) cs 

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 NONE => "" (* error *)) 

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 unmeta_chars _ (#"\\" :: _) = "" (* error *) 

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 unmeta_chars accum (c :: cs) = unmeta_chars (c :: accum) cs 

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val escape_meta = String.translate meta_char 

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val escape_metas = map escape_meta #> space_implode " " 
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val unescape_meta = String.explode #> unmeta_chars [] 
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val unescape_metas = 
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space_explode " " #> filter_out (curry (op =) "") #> map unescape_meta 
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fun extract_query line = 
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case space_explode ":" line of 

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[goal_name, suggs] => (unescape_meta goal_name, unescape_metas suggs) 
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 _ => ("", []) 
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fun parent_of_local_thm th = 
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let 

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val thy = th > Thm.theory_of_thm 

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val facts = thy > Global_Theory.facts_of 

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val space = facts > Facts.space_of 

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fun id_of s = #id (Name_Space.the_entry space s) 

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fun max_id (s', _) (s, id) = 

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let val id' = id_of s' in if id > id' then (s, id) else (s', id') end 

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in ("", ~1) > Facts.fold_static max_id facts > fst end 

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val local_prefix = "local" ^ Long_Name.separator 

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fun nickname_of th = 

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let val hint = Thm.get_name_hint th in 

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(* FIXME: There must be a better way to detect local facts. *) 

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case try (unprefix local_prefix) hint of 

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SOME suff => 

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parent_of_local_thm th ^ Long_Name.separator ^ Long_Name.separator ^ suff 

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 NONE => hint 

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end 

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fun suggested_facts suggs facts = 
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let 

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fun add_fact (fact as (_, th)) = Symtab.default (nickname_of th, fact) 
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val tab = Symtab.empty > fold add_fact facts 
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in map_filter (Symtab.lookup tab) suggs end 

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(* Ad hoc score function roughly based on Blanchette's Ringberg 2011 data. *) 
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fun score x = Math.pow (1.5, 15.5  0.05 * Real.fromInt x) + 15.0 
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fun sum_sq_avg [] = 0 
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 sum_sq_avg xs = 
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Real.ceil (100000.0 * fold (curry (op +) o score) xs 0.0) div length xs 
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fun mesh_facts max_facts [(selected, unknown)] = 
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take max_facts selected @ take (max_facts  length selected) unknown 
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 mesh_facts max_facts mess = 
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let 
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val mess = mess > map (apfst (`length)) 
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val fact_eq = Thm.eq_thm o pairself snd 
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fun score_in fact ((sel_len, sels), unks) = 
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case find_index (curry fact_eq fact) sels of 
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~1 => (case find_index (curry fact_eq fact) unks of 
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~1 => SOME sel_len 
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 _ => NONE) 
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 j => SOME j 
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fun score_of fact = mess > map_filter (score_in fact) > sum_sq_avg 
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val facts = fold (union fact_eq o take max_facts o snd o fst) mess [] 
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in 
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facts > map (`score_of) > sort (int_ord o swap o pairself fst) 
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> map snd > take max_facts 
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end 
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val thy_feature_prefix = "y_" 
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val thy_feature_name_of = prefix thy_feature_prefix 
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val const_name_of = prefix const_prefix 
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val type_name_of = prefix type_const_prefix 
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val class_name_of = prefix class_prefix 
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fun is_likely_tautology_or_too_meta th = 
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let 

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val is_boring_const = member (op =) atp_widely_irrelevant_consts 

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fun is_boring_bool t = 

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not (exists_Const (not o is_boring_const o fst) t) orelse 

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exists_type (exists_subtype (curry (op =) @{typ prop})) t 

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fun is_boring_prop (@{const Trueprop} $ t) = is_boring_bool t 

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 is_boring_prop (@{const "==>"} $ t $ u) = 

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is_boring_prop t andalso is_boring_prop u 

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 is_boring_prop (Const (@{const_name all}, _) $ (Abs (_, _, t)) $ u) = 

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is_boring_prop t andalso is_boring_prop u 

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 is_boring_prop (Const (@{const_name "=="}, _) $ t $ u) = 

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is_boring_bool t andalso is_boring_bool u 

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 is_boring_prop _ = true 

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in 

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is_boring_prop (prop_of th) andalso not (Thm.eq_thm_prop (@{thm ext}, th)) 

204 
end 

205 

206 
fun theory_ord p = 

207 
if Theory.eq_thy p then 

208 
EQUAL 

209 
else if Theory.subthy p then 

210 
LESS 

211 
else if Theory.subthy (swap p) then 

212 
GREATER 

213 
else case int_ord (pairself (length o Theory.ancestors_of) p) of 

214 
EQUAL => string_ord (pairself Context.theory_name p) 

215 
 order => order 

216 

217 
val thm_ord = theory_ord o pairself theory_of_thm 

218 

48326  219 
val bad_types = [@{type_name prop}, @{type_name bool}, @{type_name fun}] 
220 

48318  221 
fun interesting_terms_types_and_classes ctxt prover term_max_depth 
222 
type_max_depth ts = 

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let 
48318  224 
fun is_bad_const (x as (s, _)) args = 
225 
member (op =) atp_logical_consts s orelse 

226 
fst (is_built_in_const_for_prover ctxt prover x args) 

48304  227 
fun add_classes @{sort type} = I 
228 
 add_classes S = union (op =) (map class_name_of S) 

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fun do_add_type (Type (s, Ts)) = 
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(not (member (op =) bad_types s) ? insert (op =) (type_name_of s)) 
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#> fold do_add_type Ts 
48304  232 
 do_add_type (TFree (_, S)) = add_classes S 
233 
 do_add_type (TVar (_, S)) = add_classes S 

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fun add_type T = type_max_depth >= 0 ? do_add_type T 
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fun mk_app s args = 
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if member (op <>) args "" then s ^ "(" ^ space_implode "," args ^ ")" 
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else s 
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fun patternify ~1 _ = "" 
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 patternify depth t = 
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case strip_comb t of 
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(Const (s, _), args) => 
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mk_app (const_name_of s) (map (patternify (depth  1)) args) 
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 _ => "" 
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fun add_term_patterns ~1 _ = I 
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 add_term_patterns depth t = 
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insert (op =) (patternify depth t) 
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#> add_term_patterns (depth  1) t 
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val add_term = add_term_patterns term_max_depth 
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fun add_patterns t = 
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let val (head, args) = strip_comb t in 
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(case head of 
48318  252 
Const (x as (_, T)) => 
253 
not (is_bad_const x args) ? (add_term t #> add_type T) 

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 Free (_, T) => add_type T 
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 Var (_, T) => add_type T 
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 Abs (_, T, body) => add_type T #> add_patterns body 
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 _ => I) 
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#> fold add_patterns args 
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end 
48326  260 
in [] > fold add_patterns ts end 
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261 

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fun is_exists (s, _) = (s = @{const_name Ex} orelse s = @{const_name Ex1}) 
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48297  264 
val term_max_depth = 1 
265 
val type_max_depth = 1 

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266 

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(* TODO: Generate type classes for types? *) 
48318  268 
fun features_of ctxt prover thy status ts = 
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thy_feature_name_of (Context.theory_name thy) :: 
48318  270 
interesting_terms_types_and_classes ctxt prover term_max_depth type_max_depth 
271 
ts 

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> forall is_lambda_free ts ? cons "no_lams" 
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> forall (not o exists_Const is_exists) ts ? cons "no_skos" 
48302  274 
> (case status of 
275 
General => I 

276 
 Induction => cons "induction" 

277 
 Intro => cons "intro" 

278 
 Inductive => cons "inductive" 

279 
 Elim => cons "elim" 

280 
 Simp => cons "simp" 

281 
 Def => cons "def") 

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48326  283 
fun isabelle_dependencies_of all_facts = thms_in_proof (SOME all_facts) 
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284 

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val freezeT = Type.legacy_freeze_type 
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286 

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fun freeze (t $ u) = freeze t $ freeze u 
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 freeze (Abs (s, T, t)) = Abs (s, freezeT T, freeze t) 
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 freeze (Var ((s, _), T)) = Free (s, freezeT T) 
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 freeze (Const (s, T)) = Const (s, freezeT T) 
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 freeze (Free (s, T)) = Free (s, freezeT T) 
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292 
 freeze t = t 
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293 

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fun goal_of_thm thy = prop_of #> freeze #> cterm_of thy #> Goal.init 
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295 

48321  296 
fun run_prover_for_mash ctxt params prover facts goal = 
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let 
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val problem = 
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{state = Proof.init ctxt, goal = goal, subgoal = 1, subgoal_count = 1, 
48289  300 
facts = facts > map (apfst (apfst (fn name => name ()))) 
48318  301 
> map Untranslated_Fact} 
48321  302 
val prover = get_minimizing_prover ctxt Normal (K ()) prover 
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303 
in prover params (K (K (K ""))) problem end 
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304 

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305 

48302  306 
(*** Lowlevel communication with MaSh ***) 
307 

48323  308 
fun write_file (xs, f) file = 
48318  309 
let val path = Path.explode file in 
48323  310 
File.write path ""; 
311 
xs > chunk_list 500 

312 
> List.app (File.append path o space_implode "" o map f) 

48318  313 
end 
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314 

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315 
fun mash_info overlord = 
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316 
if overlord then (getenv "ISABELLE_HOME_USER", "") 
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317 
else (getenv "ISABELLE_TMP", serial_string ()) 
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318 

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319 
fun and_rm_files overlord flags files = 
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320 
if overlord then 
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321 
"" 
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322 
else 
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323 
" && rm f" ^ flags ^ "  " ^ 
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324 
space_implode " " (map File.shell_quote files) 
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325 

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326 
fun run_mash ctxt overlord (temp_dir, serial) async core = 
48311  327 
let 
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328 
val log_file = temp_dir ^ "/mash_log" ^ serial 
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329 
val err_file = temp_dir ^ "/mash_err" ^ serial 
48311  330 
val command = 
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331 
"(" ^ mash_home () ^ "/mash quiet outputDir " ^ mash_state_dir () ^ 
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332 
" log " ^ log_file ^ " " ^ core ^ ") 2>&1 > " ^ err_file ^ 
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333 
and_rm_files overlord "" [log_file, err_file] ^ 
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334 
(if async then " &" else "") 
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335 
in 
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336 
trace_msg ctxt (fn () => 
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337 
(if async then "Launching " else "Running ") ^ command); 
48323  338 
write_file ([], K "") log_file; 
339 
write_file ([], K "") err_file; 

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340 
Isabelle_System.bash command; 
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341 
if not async then trace_msg ctxt (K "Done") else () 
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342 
end 
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343 

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344 
(* TODO: Eliminate code once "mash.py" handles sequences of ADD commands as fast 
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345 
as a single INIT. *) 
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346 
fun run_mash_init ctxt overlord write_access write_feats write_deps = 
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347 
let 
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348 
val info as (temp_dir, serial) = mash_info overlord 
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349 
val in_dir = temp_dir ^ "/mash_init" ^ serial 
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350 
> tap (Path.explode #> Isabelle_System.mkdir) 
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351 
in 
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352 
write_file write_access (in_dir ^ "/mash_accessibility"); 
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353 
write_file write_feats (in_dir ^ "/mash_features"); 
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354 
write_file write_deps (in_dir ^ "/mash_dependencies"); 
48383  355 
run_mash ctxt overlord info false 
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356 
("init inputDir " ^ in_dir ^ 
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357 
and_rm_files overlord " r" [in_dir]) 
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358 
end 
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359 

48383  360 
fun run_mash_commands ctxt overlord save max_suggs write_cmds read_suggs = 
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361 
let 
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362 
val info as (temp_dir, serial) = mash_info overlord 
48318  363 
val sugg_file = temp_dir ^ "/mash_suggs" ^ serial 
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364 
val cmd_file = temp_dir ^ "/mash_commands" ^ serial 
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365 
in 
48323  366 
write_file ([], K "") sugg_file; 
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367 
write_file write_cmds cmd_file; 
48383  368 
run_mash ctxt overlord info false 
48318  369 
("inputFile " ^ cmd_file ^ " predictions " ^ sugg_file ^ 
370 
" numberOfPredictions " ^ string_of_int max_suggs ^ 

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371 
(if save then " saveModel" else "") ^ 
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372 
(and_rm_files overlord "" [sugg_file, cmd_file])); 
48318  373 
read_suggs (fn () => File.read_lines (Path.explode sugg_file)) 
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374 
end 
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375 

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376 
fun str_of_update (name, parents, feats, deps) = 
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377 
"! " ^ escape_meta name ^ ": " ^ escape_metas parents ^ "; " ^ 
48311  378 
escape_metas feats ^ "; " ^ escape_metas deps ^ "\n" 
379 

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380 
fun str_of_query (parents, feats) = 
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381 
"? " ^ escape_metas parents ^ "; " ^ escape_metas feats 
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382 

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383 
fun init_str_of_update get (upd as (name, _, _, _)) = 
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384 
escape_meta name ^ ": " ^ escape_metas (get upd) ^ "\n" 
48311  385 

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386 
fun mash_CLEAR ctxt = 
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387 
let val path = mash_state_dir () > Path.explode in 
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388 
trace_msg ctxt (K "MaSh CLEAR"); 
48309  389 
File.fold_dir (fn file => fn () => 
390 
File.rm (Path.append path (Path.basic file))) 

391 
path () 

392 
end 

48302  393 

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changeset

394 
fun mash_INIT ctxt _ [] = mash_CLEAR ctxt 
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changeset

395 
 mash_INIT ctxt overlord upds = 
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396 
(trace_msg ctxt (fn () => "MaSh INIT " ^ 
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changeset

397 
elide_string 1000 (space_implode " " (map #1 upds))); 
48323  398 
run_mash_init ctxt overlord (upds, init_str_of_update #2) 
399 
(upds, init_str_of_update #3) (upds, init_str_of_update #4)) 

48302  400 

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changeset

401 
fun mash_ADD _ _ [] = () 
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402 
 mash_ADD ctxt overlord upds = 
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changeset

403 
(trace_msg ctxt (fn () => "MaSh ADD " ^ 
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diff
changeset

404 
elide_string 1000 (space_implode " " (map #1 upds))); 
48383  405 
run_mash_commands ctxt overlord true 0 (upds, str_of_update) (K ())) 
48302  406 

48318  407 
fun mash_QUERY ctxt overlord max_suggs (query as (_, feats)) = 
48314
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added option to control which fact filter is used
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diff
changeset

408 
(trace_msg ctxt (fn () => "MaSh QUERY " ^ space_implode " " feats); 
48383  409 
run_mash_commands ctxt overlord false max_suggs 
48323  410 
([query], str_of_query) 
48318  411 
(fn suggs => snd (extract_query (List.last (suggs ())))) 
48311  412 
handle List.Empty => []) 
48302  413 

414 

48251
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moved most of MaSh exporter code to Sledgehammer
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changeset

415 
(*** Highlevel communication with MaSh ***) 
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changeset

416 

48321  417 
fun try_graph ctxt when def f = 
418 
f () 

419 
handle Graph.CYCLES (cycle :: _) => 

420 
(trace_msg ctxt (fn () => 

421 
"Cycle involving " ^ commas cycle ^ " when " ^ when); def) 

422 
 Graph.UNDEF name => 

423 
(trace_msg ctxt (fn () => 

424 
"Unknown fact " ^ quote name ^ " when " ^ when); def) 

425 

48301  426 
type mash_state = 
48316
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changeset

427 
{thys : bool Symtab.table, 
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changeset

428 
fact_graph : unit Graph.T} 
48301  429 

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changeset

430 
val empty_state = {thys = Symtab.empty, fact_graph = Graph.empty} 
48301  431 

432 
local 

433 

48321  434 
fun mash_load _ (state as (true, _)) = state 
435 
 mash_load ctxt _ = 

48309  436 
let val path = mash_state_path () in 
48302  437 
(true, 
438 
case try File.read_lines path of 

48316
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changeset

439 
SOME (comp_thys :: incomp_thys :: fact_lines) => 
48302  440 
let 
48316
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changeset

441 
fun add_thy comp thy = Symtab.update (thy, comp) 
48322
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changeset

442 
fun add_edge_to name parent = 
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changeset

443 
Graph.default_node (parent, ()) 
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diff
changeset

444 
#> Graph.add_edge (parent, name) 
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changeset

445 
fun add_fact_line line = 
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changeset

446 
case extract_query line of 
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changeset

447 
("", _) => I (* shouldn't happen *) 
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changeset

448 
 (name, parents) => 
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changeset

449 
Graph.default_node (name, ()) 
48322
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diff
changeset

450 
#> fold (add_edge_to name) parents 
48316
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changeset

451 
val thys = 
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changeset

452 
Symtab.empty > fold (add_thy true) (unescape_metas comp_thys) 
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changeset

453 
> fold (add_thy false) (unescape_metas incomp_thys) 
48321  454 
val fact_graph = 
48322
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changeset

455 
try_graph ctxt "loading state" Graph.empty (fn () => 
48321  456 
Graph.empty > fold add_fact_line fact_lines) 
48316
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changeset

457 
in {thys = thys, fact_graph = fact_graph} end 
48304  458 
 _ => empty_state) 
48302  459 
end 
48249  460 

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changeset

461 
fun mash_save ({thys, fact_graph, ...} : mash_state) = 
48301  462 
let 
48309  463 
val path = mash_state_path () 
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changeset

464 
val thys = Symtab.dest thys 
48318  465 
val line_for_thys = escape_metas o AList.find (op =) thys 
466 
fun fact_line_for name parents = 

467 
escape_meta name ^ ": " ^ escape_metas parents 

48316
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diff
changeset

468 
val append_fact = File.append path o suffix "\n" oo fact_line_for 
48301  469 
in 
48316
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diff
changeset

470 
File.write path (line_for_thys true ^ "\n" ^ line_for_thys false ^ "\n"); 
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changeset

471 
Graph.fold (fn (name, ((), (parents, _))) => fn () => 
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changeset

472 
append_fact name (Graph.Keys.dest parents)) 
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changeset

473 
fact_graph () 
48301  474 
end 
475 

48302  476 
val global_state = 
48381  477 
Synchronized.var "Sledgehammer_MaSh.global_state" (false, empty_state) 
48301  478 

479 
in 

480 

48321  481 
fun mash_map ctxt f = 
482 
Synchronized.change global_state (mash_load ctxt ##> (f #> tap mash_save)) 

48302  483 

48321  484 
fun mash_get ctxt = 
485 
Synchronized.change_result global_state (mash_load ctxt #> `snd) 

48302  486 

48332
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optimize parent computation in MaSh + remove temporary files
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changeset

487 
fun mash_unlearn ctxt = 
48302  488 
Synchronized.change global_state (fn _ => 
48332
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optimize parent computation in MaSh + remove temporary files
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changeset

489 
(mash_CLEAR ctxt; File.write (mash_state_path ()) ""; 
48308  490 
(true, empty_state))) 
48301  491 

492 
end 

493 

48318  494 
fun mash_could_suggest_facts () = mash_home () <> "" 
48321  495 
fun mash_can_suggest_facts ctxt = 
496 
not (Graph.is_empty (#fact_graph (mash_get ctxt))) 

48249  497 

48332
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diff
changeset

498 
fun parents_wrt_facts facts fact_graph = 
48316
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drastic overhaul of MaSh data structures + fixed a few performance issues
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diff
changeset

499 
let 
48378  500 
val facts = [] > fold (cons o nickname_of o snd) facts 
48330  501 
val tab = Symtab.empty > fold (fn name => Symtab.update (name, ())) facts 
48377  502 
fun insert_not_seen seen name = 
503 
not (member (op =) seen name) ? insert (op =) name 

48378  504 
fun parents_of _ parents [] = parents 
48377  505 
 parents_of seen parents (name :: names) = 
48332
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parents:
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diff
changeset

506 
if Symtab.defined tab name then 
48377  507 
parents_of (name :: seen) (name :: parents) names 
48332
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diff
changeset

508 
else 
48377  509 
parents_of (name :: seen) parents 
510 
(Graph.Keys.fold (insert_not_seen seen) 

511 
(Graph.imm_preds fact_graph name) names) 

512 
in parents_of [] [] (Graph.maximals fact_graph) end 

48316
252f45c04042
drastic overhaul of MaSh data structures + fixed a few performance issues
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parents:
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diff
changeset

513 

48318  514 
(* Generate more suggestions than requested, because some might be thrown out 
515 
later for various reasons and "meshing" gives better results with some 

516 
slack. *) 

517 
fun max_suggs_of max_facts = max_facts + Int.min (200, max_facts) 

518 

48320
891a24a48155
improved meshing of MaSh and MengPaulson if some MaSh suggestions are cutoff (the common case)
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parents:
48319
diff
changeset

519 
fun is_fact_in_graph fact_graph (_, th) = 
48378  520 
can (Graph.get_node fact_graph) (nickname_of th) 
48320
891a24a48155
improved meshing of MaSh and MengPaulson if some MaSh suggestions are cutoff (the common case)
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parents:
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diff
changeset

521 

48318  522 
fun mash_suggest_facts ctxt ({overlord, ...} : params) prover max_facts hyp_ts 
523 
concl_t facts = 

48301  524 
let 
48302  525 
val thy = Proof_Context.theory_of ctxt 
48321  526 
val fact_graph = #fact_graph (mash_get ctxt) 
48332
271a4a6af734
optimize parent computation in MaSh + remove temporary files
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parents:
48330
diff
changeset

527 
val parents = parents_wrt_facts facts fact_graph 
48318  528 
val feats = features_of ctxt prover thy General (concl_t :: hyp_ts) 
529 
val suggs = 

48320
891a24a48155
improved meshing of MaSh and MengPaulson if some MaSh suggestions are cutoff (the common case)
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parents:
48319
diff
changeset

530 
if Graph.is_empty fact_graph then [] 
891a24a48155
improved meshing of MaSh and MengPaulson if some MaSh suggestions are cutoff (the common case)
blanchet
parents:
48319
diff
changeset

531 
else mash_QUERY ctxt overlord (max_suggs_of max_facts) (parents, feats) 
891a24a48155
improved meshing of MaSh and MengPaulson if some MaSh suggestions are cutoff (the common case)
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parents:
48319
diff
changeset

532 
val selected = facts > suggested_facts suggs 
891a24a48155
improved meshing of MaSh and MengPaulson if some MaSh suggestions are cutoff (the common case)
blanchet
parents:
48319
diff
changeset

533 
val unknown = facts > filter_out (is_fact_in_graph fact_graph) 
891a24a48155
improved meshing of MaSh and MengPaulson if some MaSh suggestions are cutoff (the common case)
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parents:
48319
diff
changeset

534 
in (selected, unknown) end 
48249  535 

48316
252f45c04042
drastic overhaul of MaSh data structures + fixed a few performance issues
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parents:
48315
diff
changeset

536 
fun add_thys_for thy = 
252f45c04042
drastic overhaul of MaSh data structures + fixed a few performance issues
blanchet
parents:
48315
diff
changeset

537 
let fun add comp thy = Symtab.update (Context.theory_name thy, comp) in 
252f45c04042
drastic overhaul of MaSh data structures + fixed a few performance issues
blanchet
parents:
48315
diff
changeset

538 
add false thy #> fold (add true) (Theory.ancestors_of thy) 
252f45c04042
drastic overhaul of MaSh data structures + fixed a few performance issues
blanchet
parents:
48315
diff
changeset

539 
end 
48249  540 

48316
252f45c04042
drastic overhaul of MaSh data structures + fixed a few performance issues
blanchet
parents:
48315
diff
changeset

541 
fun update_fact_graph ctxt (name, parents, feats, deps) (upds, graph) = 
252f45c04042
drastic overhaul of MaSh data structures + fixed a few performance issues
blanchet
parents:
48315
diff
changeset

542 
let 
252f45c04042
drastic overhaul of MaSh data structures + fixed a few performance issues
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parents:
48315
diff
changeset

543 
fun maybe_add_from from (accum as (parents, graph)) = 
48321  544 
try_graph ctxt "updating graph" accum (fn () => 
545 
(from :: parents, Graph.add_edge_acyclic (from, name) graph)) 

546 
val graph = graph > Graph.default_node (name, ()) 

48316
252f45c04042
drastic overhaul of MaSh data structures + fixed a few performance issues
blanchet
parents:
48315
diff
changeset

547 
val (parents, graph) = ([], graph) > fold maybe_add_from parents 
252f45c04042
drastic overhaul of MaSh data structures + fixed a few performance issues
blanchet
parents:
48315
diff
changeset

548 
val (deps, graph) = ([], graph) > fold maybe_add_from deps 
252f45c04042
drastic overhaul of MaSh data structures + fixed a few performance issues
blanchet
parents:
48315
diff
changeset

549 
in ((name, parents, feats, deps) :: upds, graph) end 
48306  550 

48384
83dc102041e6
learn on explicit "min" command but do the learning in a thread, since it may take a couple of seconds
blanchet
parents:
48383
diff
changeset

551 
val learn_timeout_slack = 2.0 
48318  552 

48384
83dc102041e6
learn on explicit "min" command but do the learning in a thread, since it may take a couple of seconds
blanchet
parents:
48383
diff
changeset

553 
fun launch_thread timeout task = 
48383  554 
let 
48384
83dc102041e6
learn on explicit "min" command but do the learning in a thread, since it may take a couple of seconds
blanchet
parents:
48383
diff
changeset

555 
val hard_timeout = time_mult learn_timeout_slack timeout 
83dc102041e6
learn on explicit "min" command but do the learning in a thread, since it may take a couple of seconds
blanchet
parents:
48383
diff
changeset

556 
val birth_time = Time.now () 
83dc102041e6
learn on explicit "min" command but do the learning in a thread, since it may take a couple of seconds
blanchet
parents:
48383
diff
changeset

557 
val death_time = Time.+ (birth_time, hard_timeout) 
83dc102041e6
learn on explicit "min" command but do the learning in a thread, since it may take a couple of seconds
blanchet
parents:
48383
diff
changeset

558 
val desc = ("machine learner for Sledgehammer", "") 
83dc102041e6
learn on explicit "min" command but do the learning in a thread, since it may take a couple of seconds
blanchet
parents:
48383
diff
changeset

559 
in Async_Manager.launch MaShN birth_time death_time desc task end 
83dc102041e6
learn on explicit "min" command but do the learning in a thread, since it may take a couple of seconds
blanchet
parents:
48383
diff
changeset

560 

83dc102041e6
learn on explicit "min" command but do the learning in a thread, since it may take a couple of seconds
blanchet
parents:
48383
diff
changeset

561 
fun mash_learn_proof ctxt ({overlord, timeout, ...} : params) prover t facts 
83dc102041e6
learn on explicit "min" command but do the learning in a thread, since it may take a couple of seconds
blanchet
parents:
48383
diff
changeset

562 
used_ths = 
83dc102041e6
learn on explicit "min" command but do the learning in a thread, since it may take a couple of seconds
blanchet
parents:
48383
diff
changeset

563 
if is_smt_prover ctxt prover then 
83dc102041e6
learn on explicit "min" command but do the learning in a thread, since it may take a couple of seconds
blanchet
parents:
48383
diff
changeset

564 
() 
83dc102041e6
learn on explicit "min" command but do the learning in a thread, since it may take a couple of seconds
blanchet
parents:
48383
diff
changeset

565 
else 
83dc102041e6
learn on explicit "min" command but do the learning in a thread, since it may take a couple of seconds
blanchet
parents:
48383
diff
changeset

566 
launch_thread timeout 
83dc102041e6
learn on explicit "min" command but do the learning in a thread, since it may take a couple of seconds
blanchet
parents:
48383
diff
changeset

567 
(fn () => 
83dc102041e6
learn on explicit "min" command but do the learning in a thread, since it may take a couple of seconds
blanchet
parents:
48383
diff
changeset

568 
let 
83dc102041e6
learn on explicit "min" command but do the learning in a thread, since it may take a couple of seconds
blanchet
parents:
48383
diff
changeset

569 
val thy = Proof_Context.theory_of ctxt 
83dc102041e6
learn on explicit "min" command but do the learning in a thread, since it may take a couple of seconds
blanchet
parents:
48383
diff
changeset

570 
val name = timestamp () ^ " " ^ serial_string () (* freshish *) 
83dc102041e6
learn on explicit "min" command but do the learning in a thread, since it may take a couple of seconds
blanchet
parents:
48383
diff
changeset

571 
val feats = features_of ctxt prover thy General [t] 
83dc102041e6
learn on explicit "min" command but do the learning in a thread, since it may take a couple of seconds
blanchet
parents:
48383
diff
changeset

572 
val deps = used_ths > map nickname_of 
83dc102041e6
learn on explicit "min" command but do the learning in a thread, since it may take a couple of seconds
blanchet
parents:
48383
diff
changeset

573 
in 
83dc102041e6
learn on explicit "min" command but do the learning in a thread, since it may take a couple of seconds
blanchet
parents:
48383
diff
changeset

574 
mash_map ctxt (fn {thys, fact_graph} => 
83dc102041e6
learn on explicit "min" command but do the learning in a thread, since it may take a couple of seconds
blanchet
parents:
48383
diff
changeset

575 
let 
83dc102041e6
learn on explicit "min" command but do the learning in a thread, since it may take a couple of seconds
blanchet
parents:
48383
diff
changeset

576 
val parents = parents_wrt_facts facts fact_graph 
83dc102041e6
learn on explicit "min" command but do the learning in a thread, since it may take a couple of seconds
blanchet
parents:
48383
diff
changeset

577 
val upds = [(name, parents, feats, deps)] 
83dc102041e6
learn on explicit "min" command but do the learning in a thread, since it may take a couple of seconds
blanchet
parents:
48383
diff
changeset

578 
val (upds, fact_graph) = 
83dc102041e6
learn on explicit "min" command but do the learning in a thread, since it may take a couple of seconds
blanchet
parents:
48383
diff
changeset

579 
([], fact_graph) > fold (update_fact_graph ctxt) upds 
83dc102041e6
learn on explicit "min" command but do the learning in a thread, since it may take a couple of seconds
blanchet
parents:
48383
diff
changeset

580 
in 
83dc102041e6
learn on explicit "min" command but do the learning in a thread, since it may take a couple of seconds
blanchet
parents:
48383
diff
changeset

581 
mash_ADD ctxt overlord upds; 
83dc102041e6
learn on explicit "min" command but do the learning in a thread, since it may take a couple of seconds
blanchet
parents:
48383
diff
changeset

582 
{thys = thys, fact_graph = fact_graph} 
83dc102041e6
learn on explicit "min" command but do the learning in a thread, since it may take a couple of seconds
blanchet
parents:
48383
diff
changeset

583 
end); 
83dc102041e6
learn on explicit "min" command but do the learning in a thread, since it may take a couple of seconds
blanchet
parents:
48383
diff
changeset

584 
(true, "") 
83dc102041e6
learn on explicit "min" command but do the learning in a thread, since it may take a couple of seconds
blanchet
parents:
48383
diff
changeset

585 
end) 
48383  586 

48332
271a4a6af734
optimize parent computation in MaSh + remove temporary files
blanchet
parents:
48330
diff
changeset

587 
(* Too many dependencies is a sign that a decision procedure is at work. There 
271a4a6af734
optimize parent computation in MaSh + remove temporary files
blanchet
parents:
48330
diff
changeset

588 
isn't much too learn from such proofs. *) 
271a4a6af734
optimize parent computation in MaSh + remove temporary files
blanchet
parents:
48330
diff
changeset

589 
val max_dependencies = 10 
48384
83dc102041e6
learn on explicit "min" command but do the learning in a thread, since it may take a couple of seconds
blanchet
parents:
48383
diff
changeset

590 
val pass1_learn_timeout_factor = 0.75 
48332
271a4a6af734
optimize parent computation in MaSh + remove temporary files
blanchet
parents:
48330
diff
changeset

591 

48318  592 
(* The timeout is understood in a very slack fashion. *) 
48319
340187063d84
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593 
fun mash_learn_thy ctxt ({provers, verbose, overlord, ...} : params) thy timeout 
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594 
facts = 
48304  595 
let 
48318  596 
val timer = Timer.startRealTimer () 
597 
val prover = hd provers 

598 
fun timed_out frac = 

599 
Time.> (Timer.checkRealTimer timer, time_mult frac timeout) 

48321  600 
val {fact_graph, ...} = mash_get ctxt 
48320
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improved meshing of MaSh and MengPaulson if some MaSh suggestions are cutoff (the common case)
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601 
val new_facts = 
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602 
facts > filter_out (is_fact_in_graph fact_graph) 
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603 
> sort (thm_ord o pairself snd) 
48308  604 
in 
605 
if null new_facts then 

48319
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changeset

606 
"" 
48308  607 
else 
48304  608 
let 
48308  609 
val ths = facts > map snd 
48315
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fixed order of accessibles + other tweaks to MaSh
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48314
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changeset

610 
val all_names = 
48324  611 
ths > filter_out is_likely_tautology_or_too_meta 
48378  612 
> map (rpair () o nickname_of) 
48316
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drastic overhaul of MaSh data structures + fixed a few performance issues
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changeset

613 
> Symtab.make 
48332
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614 
fun trim_deps deps = if length deps > max_dependencies then [] else deps 
48318  615 
fun do_fact _ (accum as (_, true)) = accum 
616 
 do_fact ((_, (_, status)), th) ((parents, upds), false) = 

617 
let 

48378  618 
val name = nickname_of th 
48332
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619 
val feats = 
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620 
features_of ctxt prover (theory_of_thm th) status [prop_of th] 
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621 
val deps = isabelle_dependencies_of all_names th > trim_deps 
48318  622 
val upd = (name, parents, feats, deps) 
623 
in (([name], upd :: upds), timed_out pass1_learn_timeout_factor) end 

48332
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624 
val parents = parents_wrt_facts facts fact_graph 
48318  625 
val ((_, upds), _) = 
626 
((parents, []), false) > fold do_fact new_facts >> apsnd rev 

627 
val n = length upds 

48316
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628 
fun trans {thys, fact_graph} = 
252f45c04042
drastic overhaul of MaSh data structures + fixed a few performance issues
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changeset

629 
let 
252f45c04042
drastic overhaul of MaSh data structures + fixed a few performance issues
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changeset

630 
val mash_INIT_or_ADD = 
252f45c04042
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changeset

631 
if Graph.is_empty fact_graph then mash_INIT else mash_ADD 
252f45c04042
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changeset

632 
val (upds, fact_graph) = 
252f45c04042
drastic overhaul of MaSh data structures + fixed a few performance issues
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changeset

633 
([], fact_graph) > fold (update_fact_graph ctxt) upds 
252f45c04042
drastic overhaul of MaSh data structures + fixed a few performance issues
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634 
in 
252f45c04042
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changeset

635 
(mash_INIT_or_ADD ctxt overlord (rev upds); 
48383  636 
{thys = thys > add_thys_for thy, fact_graph = fact_graph}) 
48316
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changeset

637 
end 
48318  638 
in 
48321  639 
mash_map ctxt trans; 
48319
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changeset

640 
if verbose then 
48383  641 
"Learned " ^ string_of_int n ^ " proof" ^ plural_s n ^ 
48319
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changeset

642 
(if verbose then 
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changeset

643 
" in " ^ string_from_time (Timer.checkRealTimer timer) 
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changeset

644 
else 
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changeset

645 
"") ^ "." 
340187063d84
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changeset

646 
else 
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changeset

647 
"" 
48318  648 
end 
48308  649 
end 
48304  650 

48383  651 
fun mash_learn ctxt params = 
48316
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652 
let 
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changeset

653 
val thy = Proof_Context.theory_of ctxt 
48383  654 
val _ = Output.urgent_message "MaShing..." 
655 
val css_table = Sledgehammer_Fact.clasimpset_rule_table_of ctxt 

656 
val facts = all_facts_of thy css_table 

48316
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changeset

657 
in 
48383  658 
mash_learn_thy ctxt params thy infinite_timeout facts 
659 
> (fn "" => "Learned nothing."  msg => msg) 

660 
> Output.urgent_message 

48316
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changeset

661 
end 
48249  662 

48318  663 
(* The threshold should be large enough so that MaSh doesn't kick in for Auto 
664 
Sledgehammer and Try. *) 

665 
val min_secs_for_learning = 15 

666 

48321  667 
fun relevant_facts ctxt (params as {learn, fact_filter, timeout, ...}) prover 
668 
max_facts ({add, only, ...} : fact_override) hyp_ts concl_t facts = 

48314
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parents:
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diff
changeset

669 
if not (subset (op =) (the_list fact_filter, fact_filters)) then 
ee33ba3c0e05
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diff
changeset

670 
error ("Unknown fact filter: " ^ quote (the fact_filter) ^ ".") 
ee33ba3c0e05
added option to control which fact filter is used
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diff
changeset

671 
else if only then 
48289  672 
facts 
48321  673 
else if max_facts <= 0 orelse null facts then 
48288
255c6e1fd505
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parents:
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diff
changeset

674 
[] 
255c6e1fd505
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blanchet
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diff
changeset

675 
else 
255c6e1fd505
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blanchet
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diff
changeset

676 
let 
48318  677 
val thy = Proof_Context.theory_of ctxt 
48327
568b3193e53e
don't include hidden facts in relevance filter + tweak MaSh learning
blanchet
parents:
48326
diff
changeset

678 
fun maybe_learn () = 
48384
83dc102041e6
learn on explicit "min" command but do the learning in a thread, since it may take a couple of seconds
blanchet
parents:
48383
diff
changeset

679 
if learn andalso not (Async_Manager.has_running_threads MaShN) andalso 
83dc102041e6
learn on explicit "min" command but do the learning in a thread, since it may take a couple of seconds
blanchet
parents:
48383
diff
changeset

680 
Time.toSeconds timeout >= min_secs_for_learning then 
83dc102041e6
learn on explicit "min" command but do the learning in a thread, since it may take a couple of seconds
blanchet
parents:
48383
diff
changeset

681 
let val timeout = time_mult learn_timeout_slack timeout in 
83dc102041e6
learn on explicit "min" command but do the learning in a thread, since it may take a couple of seconds
blanchet
parents:
48383
diff
changeset

682 
launch_thread timeout 
83dc102041e6
learn on explicit "min" command but do the learning in a thread, since it may take a couple of seconds
blanchet
parents:
48383
diff
changeset

683 
(fn () => (true, mash_learn_thy ctxt params thy timeout facts)) 
48319
340187063d84
use async manager to manage MaSh learners to make sure they get killed cleanly
blanchet
parents:
48318
diff
changeset

684 
end 
48318  685 
else 
686 
() 

48314
ee33ba3c0e05
added option to control which fact filter is used
blanchet
parents:
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diff
changeset

687 
val fact_filter = 
ee33ba3c0e05
added option to control which fact filter is used
blanchet
parents:
48313
diff
changeset

688 
case fact_filter of 
48379
2b5ad61e2ccc
renamed "iter" fact filter to "MePo" (MengPaulson)
blanchet
parents:
48378
diff
changeset

689 
SOME ff => (() > ff <> mepoN ? maybe_learn; ff) 
48318  690 
 NONE => 
48327
568b3193e53e
don't include hidden facts in relevance filter + tweak MaSh learning
blanchet
parents:
48326
diff
changeset

691 
if mash_can_suggest_facts ctxt then (maybe_learn (); meshN) 
48379
2b5ad61e2ccc
renamed "iter" fact filter to "MePo" (MengPaulson)
blanchet
parents:
48378
diff
changeset

692 
else if mash_could_suggest_facts () then (maybe_learn (); mepoN) 
2b5ad61e2ccc
renamed "iter" fact filter to "MePo" (MengPaulson)
blanchet
parents:
48378
diff
changeset

693 
else mepoN 
48288
255c6e1fd505
rationalize relevance filter, slowing moving code from Iter to MaSh
blanchet
parents:
48251
diff
changeset

694 
val add_ths = Attrib.eval_thms ctxt add 
48292  695 
fun prepend_facts ths accepts = 
48288
255c6e1fd505
rationalize relevance filter, slowing moving code from Iter to MaSh
blanchet
parents:
48251
diff
changeset

696 
((facts > filter (member Thm.eq_thm_prop ths o snd)) @ 
48292  697 
(accepts > filter_out (member Thm.eq_thm_prop ths o snd))) 
48293  698 
> take max_facts 
48314
ee33ba3c0e05
added option to control which fact filter is used
blanchet
parents:
48313
diff
changeset

699 
fun iter () = 
48298  700 
iterative_relevant_facts ctxt params prover max_facts NONE hyp_ts 
701 
concl_t facts 

48314
ee33ba3c0e05
added option to control which fact filter is used
blanchet
parents:
48313
diff
changeset

702 
fun mash () = 
48320
891a24a48155
improved meshing of MaSh and MengPaulson if some MaSh suggestions are cutoff (the common case)
blanchet
parents:
48319
diff
changeset

703 
mash_suggest_facts ctxt params prover max_facts hyp_ts concl_t facts 
48314
ee33ba3c0e05
added option to control which fact filter is used
blanchet
parents:
48313
diff
changeset

704 
val mess = 
48320
891a24a48155
improved meshing of MaSh and MengPaulson if some MaSh suggestions are cutoff (the common case)
blanchet
parents:
48319
diff
changeset

705 
[] > (if fact_filter <> mashN then cons (iter (), []) else I) 
48379
2b5ad61e2ccc
renamed "iter" fact filter to "MePo" (MengPaulson)
blanchet
parents:
48378
diff
changeset

706 
> (if fact_filter <> mepoN then cons (mash ()) else I) 
48288
255c6e1fd505
rationalize relevance filter, slowing moving code from Iter to MaSh
blanchet
parents:
48251
diff
changeset

707 
in 
48313
0faafdffa662
mesh facts by taking into consideration whether a fact is known to MeSh
blanchet
parents:
48312
diff
changeset

708 
mesh_facts max_facts mess 
48288
255c6e1fd505
rationalize relevance filter, slowing moving code from Iter to MaSh
blanchet
parents:
48251
diff
changeset

709 
> not (null add_ths) ? prepend_facts add_ths 
255c6e1fd505
rationalize relevance filter, slowing moving code from Iter to MaSh
blanchet
parents:
48251
diff
changeset

710 
end 
255c6e1fd505
rationalize relevance filter, slowing moving code from Iter to MaSh
blanchet
parents:
48251
diff
changeset

711 

48319
340187063d84
use async manager to manage MaSh learners to make sure they get killed cleanly
blanchet
parents:
48318
diff
changeset

712 
fun kill_learners () = Async_Manager.kill_threads MaShN "learner" 
340187063d84
use async manager to manage MaSh learners to make sure they get killed cleanly
blanchet
parents:
48318
diff
changeset

713 
fun running_learners () = Async_Manager.running_threads MaShN "learner" 
340187063d84
use async manager to manage MaSh learners to make sure they get killed cleanly
blanchet
parents:
48318
diff
changeset

714 

48248  715 
end; 