src/HOL/Tools/res_atp.ML
author paulson
Fri Apr 15 13:35:53 2005 +0200 (2005-04-15)
changeset 15736 1bb0399a9517
parent 15700 970e0293dfb3
child 15774 9df37a0e935d
permissions -rw-r--r--
more tidying up of the SPASS interface
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(*  Author: Jia Meng, Cambridge University Computer Laboratory
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    ID: $Id$
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    Copyright 2004 University of Cambridge
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ATPs with TPTP format input.
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*)
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(*Jia: changed: isar_atp now processes entire proof context.  fetch thms from delta simpset/claset*)
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(*Claire: changed: added actual watcher calls *)
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signature RES_ATP = 
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sig
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val trace_res : bool ref
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val axiom_file : Path.T
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val hyps_file : Path.T
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val isar_atp : ProofContext.context * Thm.thm -> unit
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val prob_file : Path.T;
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(*val atp_ax_tac : Thm.thm list -> int -> Tactical.tactic*)
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(*val atp_tac : int -> Tactical.tactic*)
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val debug: bool ref
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end;
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structure ResAtp : RES_ATP =
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struct
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(* used for debug *)
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val debug = ref false;
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fun debug_tac tac = (warning "testing";tac);
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(* default value is false *)
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val trace_res = ref false;
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val skolem_tac = skolemize_tac;
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val num_of_clauses = ref 0;
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val clause_arr = Array.array(3500, ("empty", 0));
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val atomize_tac =
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    SUBGOAL
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     (fn (prop,_) =>
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	 let val ts = Logic.strip_assums_hyp prop
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	 in EVERY1 
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		[METAHYPS
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		     (fn hyps => (cut_facts_tac (map (ObjectLogic.atomize_thm o forall_intr_vars) hyps) 1)),
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	  REPEAT_DETERM_N (length ts) o (etac thin_rl)]
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     end);
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(* temporarily use these files, which will be loaded by Vampire *)
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val file_id_num =ref 0;
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fun new_prob_file () =  (file_id_num := (!file_id_num) + 1;"prob"^(string_of_int (!file_id_num)));
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val axiom_file = File.tmp_path (Path.basic "axioms");
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val clasimp_file = File.tmp_path (Path.basic "clasimp");
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val hyps_file = File.tmp_path (Path.basic "hyps");
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val prob_file = File.tmp_path (Path.basic "prob");
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val dummy_tac = PRIMITIVE(fn thm => thm );
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(**** for Isabelle/ML interface  ****)
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fun is_proof_char ch = ((33 <= (ord ch)) andalso ((ord ch ) <= 126) andalso (not ((ord ch ) = 63))) orelse (ch = " ")
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fun proofstring x = let val exp = explode x 
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                    in
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                        List.filter (is_proof_char ) exp
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                    end
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(*
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fun call_atp_tac thms n = (tptp_inputs thms ; dummy_tac);
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*)
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(**** For running in Isar ****)
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(* same function as that in res_axioms.ML *)
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fun repeat_RS thm1 thm2 =
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    let val thm1' =  thm1 RS thm2 handle THM _ => thm1
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    in
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	if eq_thm(thm1,thm1') then thm1' else (repeat_RS thm1' thm2)
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    end;
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(* a special version of repeat_RS *)
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fun repeat_someI_ex thm = repeat_RS thm someI_ex;
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(*********************************************************************)
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(* convert clauses from "assume" to conjecture. write to file "hyps" *)
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(* hypotheses of the goal currently being proved                     *)
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(*********************************************************************)
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fun isar_atp_h thms =
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    let val prems = map (skolemize o make_nnf o ObjectLogic.atomize_thm) thms
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        val prems' = map repeat_someI_ex prems
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        val prems'' = make_clauses prems'
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        val prems''' = ResAxioms.rm_Eps [] prems''
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        val clss = map ResClause.make_conjecture_clause prems'''
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	val (tptp_clss,tfree_litss) = ResLib.unzip (map ResClause.clause2tptp clss) 
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	val tfree_lits = ResLib.flat_noDup tfree_litss
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	val tfree_clss = map ResClause.tfree_clause tfree_lits 
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        val hypsfile = File.sysify_path hyps_file
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	val out = TextIO.openOut(hypsfile)
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    in
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	((ResLib.writeln_strs out (tfree_clss @ tptp_clss); TextIO.closeOut out; if !trace_res then (warning hypsfile) else ());tfree_lits) 
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    end;
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(*********************************************************************)
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(* write out a subgoal as tptp clauses to the file "probN"           *)
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(* where N is the number of this subgoal                             *)
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(*********************************************************************)
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fun tptp_inputs_tfrees thms n tfrees = 
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    let val _ = (warning ("in tptp_inputs_tfrees 0"))
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        val clss = map (ResClause.make_conjecture_clause_thm) thms
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         val _ = (warning ("in tptp_inputs_tfrees 1"))
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	val (tptp_clss,tfree_litss) = ResLib.unzip (map ResClause.clause2tptp clss)
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        val _ = (warning ("in tptp_inputs_tfrees 2"))
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	val tfree_clss = map ResClause.tfree_clause ((ResLib.flat_noDup tfree_litss) \\ tfrees) 
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         val _ = (warning ("in tptp_inputs_tfrees 3"))
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        val probfile = (File.sysify_path prob_file) ^ "_" ^ (string_of_int n)
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	val out = TextIO.openOut(probfile)
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    in
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	(ResLib.writeln_strs out (tfree_clss @ tptp_clss); TextIO.closeOut out; (if !trace_res then (warning probfile) else ()))
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    end;
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(*********************************************************************)
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(* call SPASS with settings and problem file for the current subgoal *)
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(* should be modified to allow other provers to be called            *)
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(*********************************************************************)
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fun call_resolve_tac sign thms sg_term (childin, childout,pid) n  = let
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                             val thmstring = Meson.concat_with_and (map string_of_thm thms)
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                             val thm_no = length thms
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                             val _ = warning ("number of thms is : "^(string_of_int thm_no))
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                             val _ = warning ("thmstring in call_res is: "^thmstring)
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                             val goalstr = Sign.string_of_term sign sg_term 
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                             val goalproofstring = proofstring goalstr
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                             val no_returns =List.filter not_newline ( goalproofstring)
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                             val goalstring = implode no_returns
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                             val _ = warning ("goalstring in call_res is: "^goalstring)
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                             (*val prob_file =File.tmp_path (Path.basic newprobfile); *)
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                             (*val _ =( warning ("calling make_clauses "))
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                             val clauses = make_clauses thms
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                             val _ =( warning ("called make_clauses "))*)
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                             (*val _ = tptp_inputs clauses prob_file*)
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                             val thmstring = Meson.concat_with_and (map string_of_thm thms)
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                             val goalstr = Sign.string_of_term sign sg_term 
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                             val goalproofstring = proofstring goalstr
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                             val no_returns =List.filter not_newline ( goalproofstring)
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                             val goalstring = implode no_returns
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                             val thmproofstring = proofstring ( thmstring)
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                             val no_returns =List.filter   not_newline ( thmproofstring)
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                             val thmstr = implode no_returns
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                             val probfile = (File.sysify_path prob_file) ^ "_" ^ (string_of_int n)
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                             val outfile = TextIO.openOut(File.sysify_path(File.tmp_path (Path.basic "hellofile")))
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                             val _ = TextIO.output(outfile, "prob file path is "^probfile^" thmstring is "^thmstr^" goalstring is "^goalstring);
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                             val _ = TextIO.flushOut outfile;
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                             val _ =  TextIO.closeOut outfile
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                          in
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                           (* without paramodulation *)
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                           (warning ("goalstring in call_res_tac is: "^goalstring));
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                           (warning ("prob file in cal_res_tac is: "^probfile));
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                            Watcher.callResProvers(childout,
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                            [("spass",thmstr,goalstring,"/homes/clq20/bin/SPASS",  
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                             "-FullRed=0%-Auto=0%-ISRe%-ISFc%-RTaut%-RFSub%-RBSub%-DocProof", 
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                             probfile)]);
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                           (* with paramodulation *)
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                           (*Watcher.callResProvers(childout,
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                                  [("spass",thmstr,goalstring,"/homes/clq20/bin/SPASS",
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                                  "-FullRed=0%-ISPm=1%-Split=0%-PObv=0%-DocProof", 
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                                    prob_path)]); *)
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                          (* Watcher.callResProvers(childout,
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                           [("spass",thmstr,goalstring,"/homes/clq20/bin/SPASS", 
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                           "-DocProof",  prob_path)]);*)
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                           dummy_tac
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                         end
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(************************************************)
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(* pass in subgoal as a term and watcher info   *)
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(* process subgoal into skolemized, negated form*)
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(* then call call_resolve_tac to send to ATP    *)
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(************************************************)
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(*
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fun resolve_tac sg_term  (childin, childout,pid) = 
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   let val _ = warning ("in resolve_tac ")
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   in
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   SELECT_GOAL
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  (EVERY1 [rtac ccontr,atomize_tac,skolemize_tac,  METAHYPS(fn negs => (warning ("calling call_resolve_tac next ");dummy_tac (*call_resolve_tac negs sg_term (childin, childout,pid)*)))])
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   end;
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*)
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(* Need to replace call_atp_tac_tfrees with call res_provers as it's the dummy one *)
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(**********************************************************)
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(* write out the current subgoal as a tptp file, probN,   *)
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(* then call dummy_tac - should be call_res_tac           *)
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(**********************************************************)
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(* should call call_res_tac here, not resolve_tac *)
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(* if we take tptpinputs out it gets into call_res_tac then falls over as usual after printing out goalstring. but if we leave it in it falls over here *)
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(* dummy tac vs.  Doesn't call resolve_tac *)
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fun call_atp_tac_tfrees sign thms n tfrees sg_term (childin, childout,pid) = 
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                                         ( warning("ths for tptp: " ^ 
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                                                   Meson.concat_with_and (map string_of_thm thms));
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                                           warning("in call_atp_tac_tfrees");
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                                           tptp_inputs_tfrees (make_clauses thms) n tfrees;
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                                           call_resolve_tac sign thms sg_term (childin, childout, pid) n;
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  					   dummy_tac);
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fun atp_tac_tfrees tfrees sg_term (childin, childout,pid)  n st = 
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let val sign = sign_of_thm st
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    val _ = warning ("in atp_tac_tfrees ")
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    val _ = warning ("sg_term :" ^ (Sign.string_of_term sign sg_term))
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   in
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SELECT_GOAL
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  (EVERY1 [rtac ccontr,atomize_tac, skolemize_tac, 
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  METAHYPS(fn negs => (warning("calling  call_atp_tac_tfrees with negs"
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                               ^ Meson.concat_with_and (map string_of_thm negs));
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           call_atp_tac_tfrees sign negs n tfrees sg_term (childin, childout,pid) ))]) n st
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end;
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fun isar_atp_g tfrees sg_term (childin, childout, pid) n = 
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((warning("in isar_atp_g"));atp_tac_tfrees tfrees sg_term (childin, childout, pid) n);
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(**********************************************)
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(* recursively call atp_tac_g on all subgoals *)
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(* sg_term is the nth subgoal as a term - used*)
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(* in proof reconstruction                    *)
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(**********************************************)
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fun isar_atp_goal' thm k n tfree_lits  (childin, childout, pid) = 
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                  	if (k > n) 
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                        then () 
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	  		else 
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                           (let val  prems = prems_of thm 
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                                val sg_term = get_nth n prems
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                                val thmstring = string_of_thm thm
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                            in   
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                		(warning("in isar_atp_goal'"));
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                                (warning("thmstring in isar_atp_goal: "^thmstring));
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 				 isar_atp_g tfree_lits  sg_term (childin, childout, pid) k thm; 
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                                 isar_atp_goal' thm (k+1) n tfree_lits  (childin, childout, pid) 
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                            end);
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fun isar_atp_goal thm n_subgoals tfree_lits   (childin, childout, pid) = (if (!debug) then warning (string_of_thm thm) else (isar_atp_goal' thm 1 n_subgoals tfree_lits  (childin, childout, pid) ));
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(**************************************************)
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(* convert clauses from "assume" to conjecture.   *)
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(* i.e. apply make_clauses and then get tptp for  *)
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(* any hypotheses in the goal produced by assume  *)
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(* statements;                                    *)
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(* write to file "hyps"                           *)
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(**************************************************)
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fun isar_atp_aux thms thm n_subgoals  (childin, childout, pid) = 
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    let val tfree_lits = isar_atp_h thms 
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    in
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	(warning("in isar_atp_aux"));isar_atp_goal thm n_subgoals tfree_lits   (childin, childout, pid)
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    end;
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(******************************************************************)
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(* called in Isar automatically                                   *)
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(* writes out the current clasimpset to a tptp file               *)
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(* passes all subgoals on to isar_atp_aux for further processing  *)
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(* turns off xsymbol at start of function, restoring it at end    *)
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(******************************************************************)
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fun isar_atp' (thms, thm) =
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    let val _=  (print_mode := (Library.gen_rems (op =) (! print_mode, ["xsymbols", "symbols"])))
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        val _= (warning ("in isar_atp'"))
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        val prems = prems_of thm
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        val sign = sign_of_thm thm
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        val thms_string = Meson.concat_with_and (map string_of_thm thms)
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        val thmstring = string_of_thm thm
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        val prems_string = Meson.concat_with_and (map (Sign.string_of_term sign) prems)
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        (* set up variables for writing out the clasimps to a tptp file *)
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        val _ = write_out_clasimp (File.sysify_path axiom_file)
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        (* cq: add write out clasimps to file *)
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        (* cq:create watcher and pass to isar_atp_aux *)                    
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        val (childin,childout,pid) = Watcher.createWatcher()
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        val pidstring = string_of_int(Word.toInt (Word.fromLargeWord ( Posix.Process.pidToWord pid )))
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    in
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	case prems of [] => () 
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		    | _ => ((warning ("initial thms: "^thms_string)); 
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                           (warning ("initial thm: "^thmstring));
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                           (warning ("subgoals: "^prems_string));
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                           (warning ("pid: "^ pidstring))); 
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                            isar_atp_aux thms thm (length prems) (childin, childout, pid) ;
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                           print_mode := (["xsymbols", "symbols"] @ ! print_mode)
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    end;
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local
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fun get_thms_cs claset =
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    let val clsset = rep_cs claset
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	val safeEs = #safeEs clsset
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	val safeIs = #safeIs clsset
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	val hazEs = #hazEs clsset
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	val hazIs = #hazIs clsset
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    in
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	safeEs @ safeIs @ hazEs @ hazIs
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    end;
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fun append_name name [] _ = []
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  | append_name name (thm::thms) k = (Thm.name_thm ((name ^ "_" ^ (string_of_int k)),thm)) :: (append_name name thms (k+1));
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fun append_names (name::names) (thms::thmss) =
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    let val thms' = append_name name thms 0
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    in
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	thms'::(append_names names thmss)
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    end;
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fun get_thms_ss [] = []
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  | get_thms_ss thms =
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    let val names = map Thm.name_of_thm thms 
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        val thms' = map (mksimps mksimps_pairs) thms
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        val thms'' = append_names names thms'
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    in
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	ResLib.flat_noDup thms''
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    end;
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in
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(* convert locally declared rules to axiom clauses *)
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(* write axiom clauses to ax_file *)
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(* what about clasimpset - it should already be in the ax file - perhaps append to ax file rather than just *)
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(* write out ? Or keep as a separate file and then cat them all together in the watcher, like we do with the *)
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(*claset file and prob file*)
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fun isar_local_thms (delta_cs, delta_ss_thms) =
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    let val thms_cs = get_thms_cs delta_cs
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	val thms_ss = get_thms_ss delta_ss_thms
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	val thms_clauses = ResLib.flat_noDup (map ResAxioms.clausify_axiom (thms_cs @ thms_ss))
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	val clauses_strs = ResLib.flat_noDup (map ResClause.tptp_clause thms_clauses) (*string list*)
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	val ax_file = File.sysify_path axiom_file
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	val out = TextIO.openOut ax_file
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    in
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	(ResLib.writeln_strs out clauses_strs; (warning ("axiom file is: "^ax_file));TextIO.closeOut out)
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    end;
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(* called in Isar automatically *)
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fun isar_atp (ctxt,thm) =
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    let val prems = ProofContext.prems_of ctxt
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        val d_cs = Classical.get_delta_claset ctxt 
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        val d_ss_thms = Simplifier.get_delta_simpset ctxt
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        val thmstring = string_of_thm thm
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        val sg_prems = prems_of thm
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        val sign = sign_of_thm thm
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        val prem_no = length sg_prems
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        val prems_string = Meson.concat_with_and (map (Sign.string_of_term sign) sg_prems)
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    in
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          (warning ("initial thm in isar_atp: "^thmstring));
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          (warning ("subgoals in isar_atp: "^prems_string));
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    	   (warning ("number of subgoals in isar_atp: "^(string_of_int prem_no)));
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          (isar_local_thms (d_cs,d_ss_thms); (warning("about to call isar_atp'"));
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           isar_atp' (prems, thm))
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    end;
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end
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end;
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Proof.atp_hook := ResAtp.isar_atp;