author | blanchet |
Tue, 24 May 2011 00:01:33 +0200 | |
changeset 42965 | 1403595ec38c |
parent 42962 | 3b50fdeb6cfc |
child 42966 | 4e2d6c1e5392 |
permissions | -rw-r--r-- |
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(* Title: HOL/Tools/ATP/atp_proof.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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Abstract representation of ATP proofs and TSTP/SPASS syntax. |
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*) |
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signature ATP_PROOF = |
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sig |
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type 'a fo_term = 'a ATP_Problem.fo_term |
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type ('a, 'b, 'c) formula = ('a, 'b, 'c) ATP_Problem.formula |
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type 'a problem = 'a ATP_Problem.problem |
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exception UNRECOGNIZED_ATP_PROOF of unit |
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datatype failure = |
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Unprovable | |
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IncompleteUnprovable | |
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ProofMissing | |
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ProofIncomplete | |
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UnsoundProof of bool * string list | |
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CantConnect | |
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TimedOut | |
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Inappropriate | |
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OutOfResources | |
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SpassTooOld | |
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VampireTooOld | |
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NoPerl | |
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NoLibwwwPerl | |
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NoRealZ3 | |
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MalformedInput | |
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MalformedOutput | |
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Interrupted | |
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Crashed | |
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InternalError | |
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UnknownError of string |
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type step_name = string * string option |
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datatype 'a step = |
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Definition of step_name * 'a * 'a | |
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Inference of step_name * 'a * step_name list |
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type 'a proof = ('a, 'a, 'a fo_term) formula step list |
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val strip_spaces : bool -> (char -> bool) -> string -> string |
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val short_output : bool -> string -> string |
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val string_for_failure : failure -> string |
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val extract_important_message : string -> string |
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val extract_known_failure : |
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(failure * string) list -> string -> failure option |
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val extract_tstplike_proof_and_outcome : |
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bool -> bool -> int -> (string * string) list -> (failure * string) list |
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-> string -> string * failure option |
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val is_same_step : step_name * step_name -> bool |
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val scan_general_id : string list -> string * string list |
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val parse_formula : |
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string list -> (string, 'a, string fo_term) formula * string list |
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val atp_proof_from_tstplike_proof : string problem -> string -> string proof |
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val map_term_names_in_atp_proof : |
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(string -> string) -> string proof -> string proof |
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val nasty_atp_proof : string Symtab.table -> string proof -> string proof |
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end; |
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structure ATP_Proof : ATP_PROOF = |
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struct |
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open ATP_Problem |
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exception UNRECOGNIZED_ATP_PROOF of unit |
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datatype failure = |
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Unprovable | |
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IncompleteUnprovable | |
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ProofMissing | |
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ProofIncomplete | |
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UnsoundProof of bool * string list | |
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CantConnect | |
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TimedOut | |
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Inappropriate | |
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OutOfResources | |
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SpassTooOld | |
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VampireTooOld | |
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NoPerl | |
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NoLibwwwPerl | |
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NoRealZ3 | |
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MalformedInput | |
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MalformedOutput | |
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Interrupted | |
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Crashed | |
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InternalError | |
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UnknownError of string |
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fun strip_c_style_comment _ [] = [] |
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| strip_c_style_comment is_evil (#"*" :: #"/" :: cs) = |
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strip_spaces_in_list true is_evil cs |
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| strip_c_style_comment is_evil (_ :: cs) = strip_c_style_comment is_evil cs |
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and strip_spaces_in_list _ _ [] = [] |
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| strip_spaces_in_list true is_evil (#"%" :: cs) = |
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strip_spaces_in_list true is_evil |
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(cs |> chop_while (not_equal #"\n") |> snd) |
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| strip_spaces_in_list true is_evil (#"/" :: #"*" :: cs) = |
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strip_c_style_comment is_evil cs |
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| strip_spaces_in_list _ _ [c1] = if Char.isSpace c1 then [] else [str c1] |
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| strip_spaces_in_list skip_comments is_evil [c1, c2] = |
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strip_spaces_in_list skip_comments is_evil [c1] @ |
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strip_spaces_in_list skip_comments is_evil [c2] |
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| strip_spaces_in_list skip_comments is_evil (c1 :: c2 :: c3 :: cs) = |
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if Char.isSpace c1 then |
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strip_spaces_in_list skip_comments is_evil (c2 :: c3 :: cs) |
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else if Char.isSpace c2 then |
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if Char.isSpace c3 then |
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strip_spaces_in_list skip_comments is_evil (c1 :: c3 :: cs) |
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else |
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str c1 :: (if forall is_evil [c1, c3] then [" "] else []) @ |
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strip_spaces_in_list skip_comments is_evil (c3 :: cs) |
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else |
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str c1 :: strip_spaces_in_list skip_comments is_evil (c2 :: c3 :: cs) |
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fun strip_spaces skip_comments is_evil = |
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implode o strip_spaces_in_list skip_comments is_evil o String.explode |
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fun is_ident_char c = Char.isAlphaNum c orelse c = #"_" |
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val strip_spaces_except_between_ident_chars = strip_spaces true is_ident_char |
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fun elide_string threshold s = |
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if size s > threshold then |
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String.extract (s, 0, SOME (threshold div 2 - 5)) ^ " ...... " ^ |
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String.extract (s, size s - (threshold + 1) div 2 + 6, NONE) |
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else |
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s |
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fun short_output verbose output = |
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if verbose then |
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if output = "" then "No details available" else elide_string 1000 output |
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else |
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"" |
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val missing_message_tail = |
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" appears to be missing. You will need to install it if you want to invoke \ |
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\remote provers." |
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fun involving [] = "" |
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| involving ss = "involving " ^ commas_quote ss ^ " " |
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fun string_for_failure Unprovable = |
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"The problem is unprovable." |
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| string_for_failure IncompleteUnprovable = |
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"The prover gave up." |
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| string_for_failure ProofMissing = |
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"The prover claims the conjecture is a theorem but did not provide a proof." |
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| string_for_failure ProofIncomplete = |
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"The prover claims the conjecture is a theorem but provided an incomplete \ |
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\proof." |
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| string_for_failure (UnsoundProof (false, ss)) = |
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"The prover found a type-unsound proof " ^ involving ss ^ |
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"(or, less likely, your axioms are inconsistent). Try passing the \ |
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\\"full_types\" option to Sledgehammer to avoid such spurious proofs." |
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| string_for_failure (UnsoundProof (true, ss)) = |
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"The prover found a type-unsound proof " ^ involving ss ^ |
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"even though a supposedly type-sound encoding was used (or, less likely, \ |
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\your axioms are inconsistent). You might want to report this to the \ |
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\Isabelle developers." |
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| string_for_failure CantConnect = "Cannot connect to remote server." |
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| string_for_failure TimedOut = "Timed out." |
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| string_for_failure Inappropriate = |
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"The problem lies outside the prover's scope." |
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| string_for_failure OutOfResources = "The prover ran out of resources." |
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| string_for_failure SpassTooOld = |
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"Isabelle requires a more recent version of SPASS with support for the \ |
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\TPTP syntax. To install it, download and extract the package \ |
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\\"http://isabelle.in.tum.de/dist/contrib/spass-3.7.tar.gz\" and add the \ |
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\\"spass-3.7\" directory's absolute path to " ^ |
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Path.print (Path.expand (Path.appends |
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174 |
(Path.variable "ISABELLE_HOME_USER" :: |
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175 |
map Path.basic ["etc", "components"]))) ^ |
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176 |
" on a line of its own." |
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| string_for_failure VampireTooOld = |
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178 |
"Isabelle requires a more recent version of Vampire. To install it, follow \ |
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179 |
\the instructions from the Sledgehammer manual (\"isabelle doc\ |
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180 |
\ sledgehammer\")." |
41744 | 181 |
| string_for_failure NoPerl = "Perl" ^ missing_message_tail |
182 |
| string_for_failure NoLibwwwPerl = |
|
183 |
"The Perl module \"libwww-perl\"" ^ missing_message_tail |
|
184 |
| string_for_failure NoRealZ3 = |
|
41222 | 185 |
"The environment variable \"Z3_REAL_SOLVER\" must be set to Z3's full path." |
41744 | 186 |
| string_for_failure MalformedInput = |
187 |
"The generated problem is malformed. Please report this to the Isabelle \ |
|
188 |
\developers." |
|
189 |
| string_for_failure MalformedOutput = "The prover output is malformed." |
|
190 |
| string_for_failure Crashed = "The prover crashed." |
|
191 |
| string_for_failure InternalError = "An internal prover error occurred." |
|
192 |
| string_for_failure (UnknownError string) = |
|
193 |
"A prover error occurred" ^ |
|
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(if string = "" then ". (Pass the \"verbose\" option for details.)" |
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else ":\n" ^ string) |
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196 |
|
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197 |
fun extract_delimited (begin_delim, end_delim) output = |
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output |> first_field begin_delim |> the |> snd |
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199 |
|> first_field end_delim |> the |> fst |
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|> first_field "\n" |> the |> snd |
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201 |
handle Option.Option => "" |
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202 |
|
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203 |
val tstp_important_message_delims = |
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("% SZS start RequiredInformation", "% SZS end RequiredInformation") |
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205 |
|
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206 |
fun extract_important_message output = |
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207 |
case extract_delimited tstp_important_message_delims output of |
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208 |
"" => "" |
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209 |
| s => s |> space_explode "\n" |> filter_out (curry (op =) "") |
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210 |
|> map (perhaps (try (unprefix "%"))) |
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211 |
|> map (perhaps (try (unprefix " "))) |
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212 |
|> space_implode "\n " |> quote |
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|
213 |
|
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214 |
(* Splits by the first possible of a list of delimiters. *) |
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215 |
fun extract_tstplike_proof delims output = |
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216 |
case pairself (find_first (fn s => String.isSubstring s output)) |
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217 |
(ListPair.unzip delims) of |
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218 |
(SOME begin_delim, SOME end_delim) => |
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219 |
extract_delimited (begin_delim, end_delim) output |
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220 |
| _ => "" |
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221 |
|
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222 |
fun extract_known_failure known_failures output = |
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223 |
known_failures |
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224 |
|> find_first (fn (_, pattern) => String.isSubstring pattern output) |
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225 |
|> Option.map fst |
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226 |
|
42848 | 227 |
fun extract_tstplike_proof_and_outcome verbose complete res_code proof_delims |
228 |
known_failures output = |
|
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229 |
case (extract_tstplike_proof proof_delims output, |
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230 |
extract_known_failure known_failures output) of |
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231 |
(_, SOME ProofIncomplete) => ("", SOME ProofIncomplete) |
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232 |
| ("", SOME failure) => |
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("", SOME (if failure = IncompleteUnprovable andalso complete then Unprovable |
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234 |
else failure)) |
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235 |
| ("", NONE) => |
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("", SOME (if res_code = 0 andalso output = "" then ProofMissing |
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237 |
else UnknownError (short_output verbose output))) |
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238 |
| (tstplike_proof, _) => (tstplike_proof, NONE) |
39452 | 239 |
|
39455 | 240 |
type step_name = string * string option |
39452 | 241 |
|
39455 | 242 |
fun is_same_step p = p |> pairself fst |> op = |
39452 | 243 |
|
244 |
fun step_name_ord p = |
|
39455 | 245 |
let val q = pairself fst p in |
39452 | 246 |
(* The "unprefix" part is to cope with remote Vampire's output. The proper |
247 |
solution would be to perform a topological sort, e.g. using the nice |
|
248 |
"Graph" functor. *) |
|
249 |
case pairself (Int.fromString o perhaps (try (unprefix "f"))) q of |
|
250 |
(NONE, NONE) => string_ord q |
|
251 |
| (NONE, SOME _) => LESS |
|
252 |
| (SOME _, NONE) => GREATER |
|
253 |
| (SOME i, SOME j) => int_ord (i, j) |
|
254 |
end |
|
255 |
||
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256 |
datatype 'a step = |
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257 |
Definition of step_name * 'a * 'a | |
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258 |
Inference of step_name * 'a * step_name list |
39452 | 259 |
|
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260 |
type 'a proof = ('a, 'a, 'a fo_term) formula step list |
39452 | 261 |
|
262 |
fun step_name (Definition (name, _, _)) = name |
|
263 |
| step_name (Inference (name, _, _)) = name |
|
264 |
||
265 |
(**** PARSING OF TSTP FORMAT ****) |
|
266 |
||
42536 | 267 |
(* Strings enclosed in single quotes (e.g., file names) *) |
39452 | 268 |
val scan_general_id = |
269 |
$$ "'" |-- Scan.repeat (~$$ "'") --| $$ "'" >> implode |
|
270 |
|| Scan.repeat ($$ "$") -- Scan.many1 Symbol.is_letdig |
|
271 |
>> (fn (ss1, ss2) => implode ss1 ^ implode ss2) |
|
272 |
||
273 |
(* Generalized first-order terms, which include file names, numbers, etc. *) |
|
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274 |
fun parse_annotation x = |
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275 |
((scan_general_id ::: Scan.repeat ($$ " " |-- scan_general_id)) |
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-- Scan.optional parse_annotation [] >> op @ |
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277 |
|| $$ "(" |-- parse_annotations --| $$ ")" |
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|| $$ "[" |-- parse_annotations --| $$ "]") x |
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279 |
and parse_annotations x = |
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280 |
(Scan.optional (parse_annotation |
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281 |
::: Scan.repeat ($$ "," |-- parse_annotation)) [] |
39452 | 282 |
>> flat) x |
283 |
||
39454 | 284 |
fun parse_term x = |
285 |
(scan_general_id |
|
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286 |
--| Scan.option ($$ ":" -- scan_general_id) (* ignore TFF types for now *) |
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287 |
-- Scan.optional ($$ "(" |-- parse_terms --| $$ ")") [] |
39452 | 288 |
>> ATerm) x |
39454 | 289 |
and parse_terms x = (parse_term ::: Scan.repeat ($$ "," |-- parse_term)) x |
39452 | 290 |
|
39598 | 291 |
fun parse_atom x = |
292 |
(parse_term -- Scan.option (Scan.option ($$ "!") --| $$ "=" -- parse_term) |
|
293 |
>> (fn (u1, NONE) => AAtom u1 |
|
42943 | 294 |
| (u1, SOME (NONE, u2)) => AAtom (ATerm ("equal", [u1, u2])) |
39598 | 295 |
| (u1, SOME (SOME _, u2)) => |
42943 | 296 |
mk_anot (AAtom (ATerm ("equal", [u1, u2]))))) x |
39452 | 297 |
|
298 |
fun fo_term_head (ATerm (s, _)) = s |
|
299 |
||
300 |
(* TPTP formulas are fully parenthesized, so we don't need to worry about |
|
301 |
operator precedence. *) |
|
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302 |
fun parse_literal x = |
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|
303 |
((Scan.repeat ($$ "~") >> length) |
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304 |
-- ($$ "(" |-- parse_formula --| $$ ")" |
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|
305 |
|| parse_quantified_formula |
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|
306 |
|| parse_atom) |
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|
307 |
>> (fn (n, phi) => phi |> n mod 2 = 1 ? mk_anot)) x |
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|
308 |
and parse_formula x = |
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|
309 |
(parse_literal |
39452 | 310 |
-- Scan.option ((Scan.this_string "=>" >> K AImplies |
311 |
|| Scan.this_string "<=>" >> K AIff |
|
312 |
|| Scan.this_string "<~>" >> K ANotIff |
|
313 |
|| Scan.this_string "<=" >> K AIf |
|
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|
314 |
|| $$ "|" >> K AOr |
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|
315 |
|| $$ "&" >> K AAnd) |
39454 | 316 |
-- parse_formula) |
39452 | 317 |
>> (fn (phi1, NONE) => phi1 |
42943 | 318 |
| (phi1, SOME (c, phi2)) => mk_aconn c phi1 phi2)) x |
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|
319 |
and parse_quantified_formula x = |
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|
320 |
(($$ "!" >> K AForall || $$ "?" >> K AExists) |
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|
321 |
--| $$ "[" -- parse_terms --| $$ "]" --| $$ ":" -- parse_literal |
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|
322 |
>> (fn ((q, ts), phi) => |
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|
323 |
(* FIXME: TFF *) |
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|
324 |
AQuant (q, map (rpair NONE o fo_term_head) ts, phi))) x |
39452 | 325 |
|
326 |
val parse_tstp_extra_arguments = |
|
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|
327 |
Scan.optional ($$ "," |-- parse_annotation |
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|
328 |
--| Scan.option ($$ "," |-- parse_annotations)) [] |
39452 | 329 |
|
41203
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|
330 |
val vampire_unknown_fact = "unknown" |
42943 | 331 |
val waldmeister_conjecture = "conjecture_1" |
332 |
||
42536 | 333 |
val tofof_fact_prefix = "fof_" |
41203
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|
334 |
|
42943 | 335 |
fun is_same_term subst tm1 tm2 = |
336 |
let |
|
337 |
fun do_term_pair _ NONE = NONE |
|
338 |
| do_term_pair (ATerm (s1, tm1), ATerm (s2, tm2)) (SOME subst) = |
|
339 |
case pairself is_atp_variable (s1, s2) of |
|
340 |
(true, true) => |
|
341 |
(case AList.lookup (op =) subst s1 of |
|
342 |
SOME s2' => if s2' = s2 then SOME subst else NONE |
|
343 |
| NONE => |
|
344 |
if null (AList.find (op =) subst s2) then SOME ((s1, s2) :: subst) |
|
345 |
else NONE) |
|
346 |
| (false, false) => |
|
347 |
if s1 = s2 andalso length tm1 = length tm2 then |
|
348 |
SOME subst |> fold do_term_pair (tm1 ~~ tm2) |
|
349 |
else |
|
350 |
NONE |
|
351 |
| _ => NONE |
|
352 |
in SOME subst |> do_term_pair (tm1, tm2) |> is_some end |
|
353 |
||
354 |
fun is_same_formula subst (AQuant (q1, xs1, phi1)) (AQuant (q2, xs2, phi2)) = |
|
355 |
q1 = q2 andalso length xs1 = length xs2 andalso |
|
356 |
is_same_formula ((map fst xs1 ~~ map fst xs2) @ subst) phi1 phi2 |
|
357 |
| is_same_formula subst (AConn (c1, phis1)) (AConn (c2, phis2)) = |
|
358 |
c1 = c2 andalso length phis1 = length phis2 andalso |
|
359 |
forall (uncurry (is_same_formula subst)) (phis1 ~~ phis2) |
|
360 |
| is_same_formula subst (AAtom (ATerm ("equal", [tm11, tm12]))) (AAtom tm2) = |
|
361 |
is_same_term subst (ATerm ("equal", [tm11, tm12])) tm2 orelse |
|
362 |
is_same_term subst (ATerm ("equal", [tm12, tm11])) tm2 |
|
363 |
| is_same_formula subst (AAtom tm1) (AAtom tm2) = is_same_term subst tm1 tm2 |
|
364 |
| is_same_formula _ _ _ = false |
|
365 |
||
366 |
fun matching_formula_line_identifier phi (Formula (ident, _, phi', _, _)) = |
|
367 |
if is_same_formula [] phi phi' then SOME ident else NONE |
|
368 |
| matching_formula_line_identifier _ _ = NONE |
|
369 |
||
370 |
fun find_formula_in_problem problem phi = |
|
371 |
problem |> maps snd |> map_filter (matching_formula_line_identifier phi) |
|
372 |
|> try hd |
|
373 |
||
42962
3b50fdeb6cfc
started adding support for THF output (but no lambdas)
blanchet
parents:
42961
diff
changeset
|
374 |
(* Syntax: (cnf|fof|tff|thf)\(<num>, <formula_role>, |
3b50fdeb6cfc
started adding support for THF output (but no lambdas)
blanchet
parents:
42961
diff
changeset
|
375 |
<formula> <extra_arguments>\). |
39452 | 376 |
The <num> could be an identifier, but we assume integers. *) |
42943 | 377 |
fun parse_tstp_line problem = |
42962
3b50fdeb6cfc
started adding support for THF output (but no lambdas)
blanchet
parents:
42961
diff
changeset
|
378 |
((Scan.this_string "cnf" || Scan.this_string "fof" || Scan.this_string "tff" |
3b50fdeb6cfc
started adding support for THF output (but no lambdas)
blanchet
parents:
42961
diff
changeset
|
379 |
|| Scan.this_string "thf") -- $$ "(") |
42943 | 380 |
|-- scan_general_id --| $$ "," -- Symbol.scan_id --| $$ "," |
381 |
-- parse_formula -- parse_tstp_extra_arguments --| $$ ")" --| $$ "." |
|
382 |
>> (fn (((num, role), phi), deps) => |
|
383 |
let |
|
384 |
val (name, deps) = |
|
385 |
(* Waldmeister isn't exactly helping. *) |
|
386 |
case deps of |
|
387 |
["file", _, s] => |
|
388 |
((num, |
|
389 |
if s = vampire_unknown_fact then |
|
390 |
NONE |
|
391 |
else if s = waldmeister_conjecture then |
|
392 |
find_formula_in_problem problem (mk_anot phi) |
|
393 |
else |
|
394 |
SOME (s |> perhaps (try (unprefix tofof_fact_prefix)))), |
|
395 |
[]) |
|
396 |
| ["file", _] => ((num, find_formula_in_problem problem phi), []) |
|
397 |
| _ => ((num, NONE), deps) |
|
398 |
in |
|
399 |
case role of |
|
400 |
"definition" => |
|
401 |
(case phi of |
|
402 |
AConn (AIff, [phi1 as AAtom _, phi2]) => |
|
403 |
Definition (name, phi1, phi2) |
|
404 |
| AAtom (ATerm ("equal", _)) => |
|
405 |
(* Vampire's equality proxy axiom *) |
|
406 |
Inference (name, phi, map (rpair NONE) deps) |
|
407 |
| _ => raise Fail "malformed definition") |
|
408 |
| _ => Inference (name, phi, map (rpair NONE) deps) |
|
409 |
end) |
|
39452 | 410 |
|
411 |
(**** PARSING OF SPASS OUTPUT ****) |
|
412 |
||
413 |
(* SPASS returns clause references of the form "x.y". We ignore "y", whose role |
|
414 |
is not clear anyway. *) |
|
415 |
val parse_dot_name = scan_general_id --| $$ "." --| scan_general_id |
|
416 |
||
417 |
val parse_spass_annotations = |
|
418 |
Scan.optional ($$ ":" |-- Scan.repeat (parse_dot_name |
|
419 |
--| Scan.option ($$ ","))) [] |
|
420 |
||
421 |
(* It is not clear why some literals are followed by sequences of stars and/or |
|
422 |
pluses. We ignore them. *) |
|
39602 | 423 |
fun parse_decorated_atom x = |
424 |
(parse_atom --| Scan.repeat ($$ "*" || $$ "+" || $$ " ")) x |
|
39452 | 425 |
|
426 |
fun mk_horn ([], []) = AAtom (ATerm ("c_False", [])) |
|
42943 | 427 |
| mk_horn ([], pos_lits) = foldr1 (uncurry (mk_aconn AOr)) pos_lits |
428 |
| mk_horn (neg_lits, []) = mk_anot (foldr1 (uncurry (mk_aconn AAnd)) neg_lits) |
|
39452 | 429 |
| mk_horn (neg_lits, pos_lits) = |
42943 | 430 |
mk_aconn AImplies (foldr1 (uncurry (mk_aconn AAnd)) neg_lits) |
431 |
(foldr1 (uncurry (mk_aconn AOr)) pos_lits) |
|
39452 | 432 |
|
39645 | 433 |
fun parse_horn_clause x = |
434 |
(Scan.repeat parse_decorated_atom --| $$ "|" --| $$ "|" |
|
435 |
-- Scan.repeat parse_decorated_atom --| $$ "-" --| $$ ">" |
|
436 |
-- Scan.repeat parse_decorated_atom |
|
437 |
>> (mk_horn o apfst (op @))) x |
|
39452 | 438 |
|
439 |
(* Syntax: <num>[0:<inference><annotations>] |
|
440 |
<atoms> || <atoms> -> <atoms>. *) |
|
39645 | 441 |
fun parse_spass_line x = |
442 |
(scan_general_id --| $$ "[" --| $$ "0" --| $$ ":" --| Symbol.scan_id |
|
443 |
-- parse_spass_annotations --| $$ "]" -- parse_horn_clause --| $$ "." |
|
444 |
>> (fn ((num, deps), u) => |
|
445 |
Inference ((num, NONE), u, map (rpair NONE) deps))) x |
|
39452 | 446 |
|
42943 | 447 |
fun parse_line problem = parse_tstp_line problem || parse_spass_line |
448 |
fun parse_proof problem s = |
|
42648 | 449 |
s |> strip_spaces_except_between_ident_chars |
450 |
|> raw_explode |
|
451 |
|> Scan.finite Symbol.stopper |
|
42965
1403595ec38c
slightly gracefuller handling of LEO-II and Satallax output
blanchet
parents:
42962
diff
changeset
|
452 |
(Scan.error (!! (fn _ => raise UNRECOGNIZED_ATP_PROOF ()) |
42943 | 453 |
(Scan.repeat1 (parse_line problem)))) |
42648 | 454 |
|> fst |
39452 | 455 |
|
456 |
fun clean_up_dependency seen dep = find_first (curry is_same_step dep) seen |
|
457 |
fun clean_up_dependencies _ [] = [] |
|
458 |
| clean_up_dependencies seen ((step as Definition (name, _, _)) :: steps) = |
|
459 |
step :: clean_up_dependencies (name :: seen) steps |
|
460 |
| clean_up_dependencies seen (Inference (name, u, deps) :: steps) = |
|
461 |
Inference (name, u, map_filter (clean_up_dependency seen) deps) :: |
|
462 |
clean_up_dependencies (name :: seen) steps |
|
463 |
||
42943 | 464 |
fun atp_proof_from_tstplike_proof _ "" = [] |
465 |
| atp_proof_from_tstplike_proof problem s = |
|
42449
494e4ac5b0f8
detect some unsound proofs before showing them to the user
blanchet
parents:
42060
diff
changeset
|
466 |
s ^ "$" (* the $ sign acts as a sentinel (FIXME: needed?) *) |
42943 | 467 |
|> parse_proof problem |
42449
494e4ac5b0f8
detect some unsound proofs before showing them to the user
blanchet
parents:
42060
diff
changeset
|
468 |
|> sort (step_name_ord o pairself step_name) |
494e4ac5b0f8
detect some unsound proofs before showing them to the user
blanchet
parents:
42060
diff
changeset
|
469 |
|> clean_up_dependencies [] |
39452 | 470 |
|
39454 | 471 |
fun map_term_names_in_term f (ATerm (s, ts)) = |
472 |
ATerm (f s, map (map_term_names_in_term f) ts) |
|
473 |
fun map_term_names_in_formula f (AQuant (q, xs, phi)) = |
|
474 |
AQuant (q, xs, map_term_names_in_formula f phi) |
|
475 |
| map_term_names_in_formula f (AConn (c, phis)) = |
|
476 |
AConn (c, map (map_term_names_in_formula f) phis) |
|
477 |
| map_term_names_in_formula f (AAtom t) = AAtom (map_term_names_in_term f t) |
|
478 |
fun map_term_names_in_step f (Definition (name, phi1, phi2)) = |
|
479 |
Definition (name, map_term_names_in_formula f phi1, |
|
480 |
map_term_names_in_formula f phi2) |
|
481 |
| map_term_names_in_step f (Inference (name, phi, deps)) = |
|
482 |
Inference (name, map_term_names_in_formula f phi, deps) |
|
483 |
fun map_term_names_in_atp_proof f = map (map_term_names_in_step f) |
|
484 |
||
485 |
fun nasty_name pool s = s |> Symtab.lookup pool |> the_default s |
|
486 |
fun nasty_atp_proof pool = |
|
487 |
if Symtab.is_empty pool then I |
|
488 |
else map_term_names_in_atp_proof (nasty_name pool) |
|
489 |
||
39452 | 490 |
end; |