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(* Title: HOL/Tools/Sledgehammer/sledgehammer_commands.ML
Author: Jasmin Blanchette, TU Muenchen
Adds "sledgehammer" and related commands to Isabelle/Isar's outer syntax.
*)
signature SLEDGEHAMMER_COMMANDS =
sig
type params = Sledgehammer_Prover.params
val provers : string Unsynchronized.ref
val default_params : theory -> (string * string) list -> params
end;
structure Sledgehammer_Commands : SLEDGEHAMMER_COMMANDS =
struct
open ATP_Util
open ATP_Problem_Generate
open ATP_Proof
open ATP_Proof_Reconstruct
open Sledgehammer_Util
open Sledgehammer_Fact
open Sledgehammer_ATP_Systems
open Sledgehammer_Prover
open Sledgehammer_Prover_Minimize
open Sledgehammer_MaSh
open Sledgehammer
val cvc4N = "cvc4"
val veritN = "verit"
val z3N = "z3"
val runN = "run"
val supported_proversN = "supported_provers"
val refresh_tptpN = "refresh_tptp"
(** Sledgehammer commands **)
fun add_fact_override ns : fact_override = {add = ns, del = [], only = false}
fun del_fact_override ns : fact_override = {add = [], del = ns, only = false}
fun only_fact_override ns : fact_override = {add = ns, del = [], only = true}
fun merge_fact_override_pairwise (r1 : fact_override) (r2 : fact_override) =
{add = #add r1 @ #add r2, del = #del r1 @ #del r2, only = #only r1 andalso #only r2}
fun merge_fact_overrides rs = fold merge_fact_override_pairwise rs (only_fact_override [])
(*** parameters ***)
val provers = Unsynchronized.ref ""
type raw_param = string * string list
val default_default_params =
[("debug", "false"),
("verbose", "false"),
("overlord", "false"),
("spy", "false"),
("type_enc", "smart"),
("strict", "false"),
("lam_trans", "smart"),
("uncurried_aliases", "smart"),
("learn", "true"),
("fact_filter", "smart"),
("max_facts", "smart"),
("fact_thresholds", "0.45 0.85"),
("max_mono_iters", "smart"),
("max_new_mono_instances", "smart"),
("isar_proofs", "smart"),
("compress", "smart"),
("try0", "true"),
("smt_proofs", "true"),
("slice", "true"),
("minimize", "true"),
("preplay_timeout", "1")]
val alias_params =
[("prover", ("provers", [])), (* undocumented *)
("dont_preplay", ("preplay_timeout", ["0"])),
("dont_compress", ("compress", ["1"])),
("isar_proof", ("isar_proofs", [])) (* legacy *)]
val negated_alias_params =
[("no_debug", "debug"),
("quiet", "verbose"),
("no_overlord", "overlord"),
("dont_spy", "spy"),
("non_strict", "strict"),
("no_uncurried_aliases", "uncurried_aliases"),
("dont_learn", "learn"),
("no_isar_proofs", "isar_proofs"),
("dont_slice", "slice"),
("dont_minimize", "minimize"),
("dont_try0", "try0"),
("no_smt_proofs", "smt_proofs")]
val property_dependent_params = ["provers", "timeout"]
fun is_known_raw_param s =
AList.defined (op =) default_default_params s orelse
AList.defined (op =) alias_params s orelse
AList.defined (op =) negated_alias_params s orelse
member (op =) property_dependent_params s orelse s = "expect"
fun is_prover_list ctxt s =
(case space_explode " " s of
ss as _ :: _ => forall (is_prover_supported ctxt) ss
| _ => false)
fun unalias_raw_param (name, value) =
(case AList.lookup (op =) alias_params name of
SOME (name', []) => (name', value)
| SOME (param' as (name', _)) =>
if value <> ["false"] then
param'
else
error ("Parameter " ^ quote name ^ " cannot be set to \"false\" (cf. " ^ quote name' ^ ")")
| NONE =>
(case AList.lookup (op =) negated_alias_params name of
SOME name' => (name',
(case value of
["false"] => ["true"]
| ["true"] => ["false"]
| [] => ["false"]
| _ => value))
| NONE => (name, value)))
val any_type_enc = type_enc_of_string Strict "erased"
(* "provers =", "type_enc =", "lam_trans =", "fact_filter =", and "max_facts ="
can be omitted. For the last four, this is a secret feature. *)
fun normalize_raw_param ctxt =
unalias_raw_param
#> (fn (name, value) =>
if is_known_raw_param name then
(name, value)
else if null value then
if is_prover_list ctxt name then
("provers", [name])
else if can (type_enc_of_string Strict) name then
("type_enc", [name])
else if can (trans_lams_of_string ctxt any_type_enc) name then
("lam_trans", [name])
else if member (op =) fact_filters name then
("fact_filter", [name])
else if is_some (Int.fromString name) then
("max_facts", [name])
else
error ("Unknown parameter: " ^ quote name)
else
error ("Unknown parameter: " ^ quote name))
(* Ensures that type encodings such as "mono_native?" and "poly_guards!!" are
read correctly. *)
val implode_param = strip_spaces_except_between_idents o space_implode " "
(* FIXME: use "Generic_Data" *)
structure Data = Theory_Data
(
type T = raw_param list
val empty = default_default_params |> map (apsnd single)
val extend = I
fun merge data : T = AList.merge (op =) (K true) data
)
fun remotify_prover_if_supported_and_not_already_remote ctxt name =
if String.isPrefix remote_prefix name then
SOME name
else
let val remote_name = remote_prefix ^ name in
if is_prover_supported ctxt remote_name then SOME remote_name else NONE
end
fun remotify_prover_if_not_installed ctxt name =
if is_prover_supported ctxt name andalso is_prover_installed ctxt name then SOME name
else remotify_prover_if_supported_and_not_already_remote ctxt name
(* The first ATP of the list is used by Auto Sledgehammer. *)
fun default_provers_param_value mode ctxt =
[cvc4N] @
(if is_vampire_noncommercial_license_accepted () = SOME false then [] else [vampireN]) @
[z3N, eN, spassN, veritN]
|> map_filter (remotify_prover_if_not_installed ctxt)
(* In "try" mode, leave at least one thread to another slow tool (e.g. Nitpick) *)
|> take (Multithreading.max_threads () - (if mode = Try then 1 else 0))
|> implode_param
fun set_default_raw_param param thy =
let val ctxt = Proof_Context.init_global thy in
thy |> Data.map (AList.update (op =) (normalize_raw_param ctxt param))
end
fun default_raw_params mode thy =
let val ctxt = Proof_Context.init_global thy in
Data.get thy
|> fold (AList.default (op =))
[("provers", [(case !provers of "" => default_provers_param_value mode ctxt | s => s)]),
("timeout",
let val timeout = Options.default_int \<^system_option>\<open>sledgehammer_timeout\<close> in
[if timeout <= 0 then "none" else string_of_int timeout]
end)]
end
fun extract_params mode default_params override_params =
let
val raw_params = rev override_params @ rev default_params
val lookup = Option.map implode_param o AList.lookup (op =) raw_params
val lookup_string = the_default "" o lookup
fun general_lookup_bool option default_value name =
(case lookup name of
SOME s => parse_bool_option option name s
| NONE => default_value)
val lookup_bool = the o general_lookup_bool false (SOME false)
fun lookup_time name =
(case lookup name of
SOME s => parse_time name s
| NONE => Time.zeroTime)
fun lookup_int name =
(case lookup name of
NONE => 0
| SOME s =>
(case Int.fromString s of
SOME n => n
| NONE => error ("Parameter " ^ quote name ^ " must be assigned an integer value")))
fun lookup_real name =
(case lookup name of
NONE => 0.0
| SOME s =>
(case Real.fromString s of
SOME n => n
| NONE => error ("Parameter " ^ quote name ^ " must be assigned a real value")))
fun lookup_real_pair name =
(case lookup name of
NONE => (0.0, 0.0)
| SOME s =>
(case s |> space_explode " " |> map Real.fromString of
[SOME r1, SOME r2] => (r1, r2)
| _ => error ("Parameter " ^ quote name ^ " must be assigned a pair of floating-point \
\values (e.g., \"0.6 0.95\")")))
fun lookup_option lookup' name =
(case lookup name of
SOME "smart" => NONE
| _ => SOME (lookup' name))
val debug = mode <> Auto_Try andalso lookup_bool "debug"
val verbose = debug orelse (mode <> Auto_Try andalso lookup_bool "verbose")
val overlord = lookup_bool "overlord"
val spy = getenv "SLEDGEHAMMER_SPY" = "yes" orelse lookup_bool "spy"
val provers = lookup_string "provers" |> space_explode " " |> mode = Auto_Try ? single o hd
val type_enc =
if mode = Auto_Try then
NONE
else
(case lookup_string "type_enc" of
"smart" => NONE
| s => (type_enc_of_string Strict s; SOME s))
val strict = mode = Auto_Try orelse lookup_bool "strict"
val lam_trans = lookup_option lookup_string "lam_trans"
val uncurried_aliases = lookup_option lookup_bool "uncurried_aliases"
val learn = lookup_bool "learn"
val fact_filter =
lookup_option lookup_string "fact_filter"
|> mode = Auto_Try ? (fn NONE => SOME mepoN | sf => sf)
val max_facts = lookup_option lookup_int "max_facts"
val fact_thresholds = lookup_real_pair "fact_thresholds"
val max_mono_iters = lookup_option lookup_int "max_mono_iters"
val max_new_mono_instances =
lookup_option lookup_int "max_new_mono_instances"
val isar_proofs = lookup_option lookup_bool "isar_proofs"
val compress = Option.map (curry Real.max 1.0) (lookup_option lookup_real "compress")
val try0 = lookup_bool "try0"
val smt_proofs = lookup_bool "smt_proofs"
val slice = mode <> Auto_Try andalso lookup_bool "slice"
val minimize = lookup_bool "minimize"
val timeout = lookup_time "timeout"
val preplay_timeout = lookup_time "preplay_timeout"
val expect = lookup_string "expect"
in
{debug = debug, verbose = verbose, overlord = overlord, spy = spy, provers = provers,
type_enc = type_enc, strict = strict, lam_trans = lam_trans,
uncurried_aliases = uncurried_aliases, learn = learn, fact_filter = fact_filter,
max_facts = max_facts, fact_thresholds = fact_thresholds, max_mono_iters = max_mono_iters,
max_new_mono_instances = max_new_mono_instances, isar_proofs = isar_proofs,
compress = compress, try0 = try0, smt_proofs = smt_proofs, slice = slice, minimize = minimize,
timeout = timeout, preplay_timeout = preplay_timeout, expect = expect}
end
fun get_params mode = extract_params mode o default_raw_params mode
fun default_params thy = get_params Normal thy o map (apsnd single)
val silence_state =
Proof.map_contexts (Try0.silence_methods false #> Config.put SMT_Config.verbose false)
(* Sledgehammer the given subgoal *)
val default_learn_prover_timeout = 2.0
fun hammer_away override_params writeln_result subcommand opt_i fact_override state0 =
let
(* We generally want chained facts to be picked up by the relevance filter, because it can then
give it a proper name, which is useful for a variety of reasons (minimization, Isar proofs,
verbose output, machine learning). However, if the fact is available by no other means (not
even backticks), as "f" would be in "using f unfolding f'" after unfolding, we have no choice
but to insert it into the state as an additional hypothesis.
*)
val {facts = chained0, ...} = Proof.goal state0
val (inserts, keep_chained) =
if null chained0 orelse #only fact_override then
(chained0, [])
else
let val ctxt0 = Proof.context_of state0 in
List.partition (is_useful_unnamed_local_fact ctxt0) chained0
end
val state = state0
|> (if null inserts then I else Proof.refine_insert inserts #> Proof.set_facts keep_chained)
|> silence_state
val thy = Proof.theory_of state
val ctxt = Proof.context_of state
val override_params = override_params |> map (normalize_raw_param ctxt)
in
if subcommand = runN then
let val i = the_default 1 opt_i in
ignore (run_sledgehammer
(get_params Normal thy override_params) Normal writeln_result i fact_override state)
end
else if subcommand = supported_proversN then
supported_provers ctxt
else if subcommand = unlearnN then
mash_unlearn ctxt
else if subcommand = learn_isarN orelse subcommand = learn_proverN orelse
subcommand = relearn_isarN orelse subcommand = relearn_proverN then
(if subcommand = relearn_isarN orelse subcommand = relearn_proverN then mash_unlearn ctxt
else ();
mash_learn ctxt
(* TODO: Use MaSh mode instead and have the special defaults hardcoded in "get_params" *)
(get_params Normal thy
([("timeout", [string_of_real default_learn_prover_timeout]),
("slice", ["false"])] @
override_params @
[("preplay_timeout", ["0"])]))
fact_override (#facts (Proof.goal state))
(subcommand = learn_proverN orelse subcommand = relearn_proverN))
else if subcommand = refresh_tptpN then
refresh_systems_on_tptp ()
else
error ("Unknown subcommand: " ^ quote subcommand)
end
fun string_of_raw_param (key, values) =
key ^ (case implode_param values of "" => "" | value => " = " ^ value)
val parse_query_bang = \<^keyword>\<open>?\<close> || \<^keyword>\<open>!\<close> || \<^keyword>\<open>!!\<close>
val parse_key = Scan.repeat1 (Parse.embedded || parse_query_bang) >> implode_param
val parse_value = Scan.repeat1 (Parse.name || Parse.float_number || parse_query_bang)
val parse_param = parse_key -- Scan.optional (\<^keyword>\<open>=\<close> |-- parse_value) []
val parse_params = Scan.optional (Args.bracks (Parse.list parse_param)) []
val parse_fact_refs = Scan.repeat1 (Scan.unless (Parse.name -- Args.colon) Parse.thm)
val parse_fact_override_chunk =
(Args.add |-- Args.colon |-- parse_fact_refs >> add_fact_override)
|| (Args.del |-- Args.colon |-- parse_fact_refs >> del_fact_override)
|| (parse_fact_refs >> only_fact_override)
val parse_fact_override =
Scan.optional (Args.parens (Scan.repeat parse_fact_override_chunk >> merge_fact_overrides))
no_fact_override
val _ =
Outer_Syntax.command \<^command_keyword>\<open>sledgehammer\<close>
"search for first-order proof using automatic theorem provers"
(Scan.optional Parse.name runN -- parse_params
-- parse_fact_override -- Scan.option Parse.nat >>
(fn (((subcommand, params), fact_override), opt_i) =>
Toplevel.keep_proof
(hammer_away params NONE subcommand opt_i fact_override o Toplevel.proof_of)))
val _ =
Outer_Syntax.command \<^command_keyword>\<open>sledgehammer_params\<close>
"set and display the default parameters for Sledgehammer"
(parse_params >> (fn params =>
Toplevel.theory (fold set_default_raw_param params #> tap (fn thy =>
writeln ("Default parameters for Sledgehammer:\n" ^
(case rev (default_raw_params Normal thy) of
[] => "none"
| params => params |> map string_of_raw_param |> sort_strings |> cat_lines))))))
fun try_sledgehammer auto state =
let
val thy = Proof.theory_of state
val mode = if auto then Auto_Try else Try
val i = 1
in
run_sledgehammer (get_params mode thy []) mode NONE i no_fact_override (silence_state state)
end
val _ = Try.tool_setup (sledgehammerN, (40, \<^system_option>\<open>auto_sledgehammer\<close>, try_sledgehammer))
val _ =
Query_Operation.register {name = sledgehammerN, pri = 0}
(fn {state = st, args, writeln_result, ...} =>
(case try Toplevel.proof_of st of
SOME state =>
let
val [provers_arg, isar_proofs_arg, try0_arg] = args
val override_params =
((if provers_arg = "" then [] else [("provers", space_explode " " provers_arg)]) @
[("isar_proofs", [if isar_proofs_arg = "true" then "true" else "smart"]),
("try0", [try0_arg]),
("debug", ["false"]),
("verbose", ["false"]),
("overlord", ["false"])]);
in hammer_away override_params (SOME writeln_result) runN NONE no_fact_override state end
| NONE => error "Unknown proof context"))
end;
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