src/HOL/Tools/res_atp_provers.ML

remove division_by_zero requirement from termdiffs lemmas; cleaned up some proofs

(*  ID:         $Id$
    Author:     Jia Meng, NICTA

Functions used for ATP Oracle.
*)


structure ResAtpProvers =

struct

fun seek_line s instr =
  let val thisLine = TextIO.inputLine instr
  in thisLine <> "" andalso 
     (thisLine = s orelse seek_line s instr) 
  end;

fun location s = warning ("ATP input at: " ^ s);

fun call_vampire (file:string, time: int) = 
  let val _ = location file
      val runtime = "-t " ^ (string_of_int time)
      val vampire = ResAtp.helper_path "VAMPIRE_HOME" "vampire"
      val (instr,outstr) = Unix.streamsOf (Unix.execute(vampire, [runtime,"--mode casc",file]))
  in seek_line "--------------------- PROVED ----------------------\n" instr
  end;

fun call_eprover (file:string, time:int) =
  let val _ = location file
      val eprover = ResAtp.helper_path "E_HOME" "eprover"
      val runtime = "--cpu-limit=" ^ (string_of_int time)
      val (instr,outstr) = Unix.streamsOf (Unix.execute(eprover, 
                              [runtime,"--tstp-in","-tAutoDev","-xAutoDev",file]))
  in seek_line "# Proof found!\n" instr
  end; 

fun call_spass (file:string, time:int) =
  let val _ = location file
      val runtime = "-TimeLimit=" ^ (string_of_int time)
      val spass = ResAtp.helper_path "SPASS_HOME" "SPASS"
      val (instr,outstr) = Unix.streamsOf (Unix.execute(spass, 
			      [runtime,"-Splits=0", "-FullRed=0", "-SOS=1",file]))
  in seek_line "SPASS beiseite: Proof found.\n" instr
  end;

fun vampire_o _ (file,time) = 
  if call_vampire (file,time) 
  then (warning file; ResAtp.cond_rm_tmp file; HOLogic.mk_Trueprop HOLogic.false_const)  
  else (ResAtp.cond_rm_tmp file; raise Fail ("vampire oracle failed"));

fun eprover_o _ (file,time) = 
  if call_eprover (file,time) 
  then (warning file; ResAtp.cond_rm_tmp file; HOLogic.mk_Trueprop HOLogic.false_const)
  else (ResAtp.cond_rm_tmp file; raise Fail ("eprover oracle failed"));

fun spass_o _ (file,time) =
    if call_spass (file,time)
    then (warning file; ResAtp.cond_rm_tmp file; HOLogic.mk_Trueprop HOLogic.false_const)
    else (ResAtp.cond_rm_tmp file; raise Fail ("SPASS oracle failed"));


end;