(* Title: VampCommunication.ml
ID: $Id$
Author: Claire Quigley
Copyright 2004 University of Cambridge
*)
(***************************************************************************)
(* Code to deal with the transfer of proofs from a Vampire process *)
(***************************************************************************)
signature VAMP_COMM =
sig
val getVampInput : TextIO.instream -> string * string * string
val checkVampProofFound:
TextIO.instream * TextIO.outstream * Posix.Process.pid * string *
string * string * thm * int * (ResClause.clause * thm) Array.array * int -> bool
end;
structure VampComm : VAMP_COMM =
struct
exception EOF;
(**********************************************************************)
(* Reconstruct the Vampire proof w.r.t. thmstring (string version of *)
(* Isabelle goal to be proved), then transfer the reconstruction *)
(* steps as a string to the input pipe of the main Isabelle process *)
(**********************************************************************)
fun reconstruct_tac proofextract thmstring goalstring toParent ppid sg_num
clause_arr num_of_clauses =
SELECT_GOAL
(EVERY1
[rtac ccontr, ResLib.atomize_tac, skolemize_tac,
METAHYPS(fn negs =>
(Recon_Transfer.vampString_to_lemmaString proofextract thmstring
goalstring toParent ppid negs clause_arr num_of_clauses))]) sg_num
fun transferVampInput (fromChild, toParent, ppid,thmstring,goalstring,
currentString, thm, sg_num,clause_arr, num_of_clauses) =
let val thisLine = TextIO.inputLine fromChild
in
if thisLine = "" (*end of file?*)
then (File.write (File.tmp_path (Path.basic"vampire_extraction_failed")) currentString;
raise EOF)
else if (thisLine = "%============== End of proof. ==================\n" )
then let val proofextract = Recon_Parse.extract_proof (currentString^thisLine)
in
File.write (File.tmp_path (Path.basic"vampire_extracted_prf")) proofextract;
reconstruct_tac proofextract thmstring goalstring toParent ppid sg_num
clause_arr num_of_clauses thm
end
else transferVampInput (fromChild, toParent, ppid,thmstring, goalstring,
currentString^thisLine, thm, sg_num, clause_arr, num_of_clauses)
end;
(*********************************************************************************)
(* Inspect the output of a Vampire process to see if it has found a proof, *)
(* and if so, transfer output to the input pipe of the main Isabelle process *)
(*********************************************************************************)
fun startVampTransfer (fromChild, toParent, ppid, thmstring,goalstring,childCmd,
thm, sg_num,clause_arr, num_of_clauses) =
let val thisLine = TextIO.inputLine fromChild
in
if thisLine = "" then false
else if (thisLine = "%================== Proof: ======================\n")
then
(File.append (File.tmp_path (Path.basic "vampire_transfer"))
("about to transfer proof, thm is: " ^ string_of_thm thm);
transferVampInput (fromChild, toParent, ppid,thmstring, goalstring,
thisLine, thm, sg_num,clause_arr, num_of_clauses);
true) handle EOF => false
else
startVampTransfer (fromChild, toParent, ppid, thmstring, goalstring,
childCmd, thm, sg_num,clause_arr, num_of_clauses)
end
fun checkVampProofFound (fromChild, toParent, ppid,thmstring,goalstring, childCmd,
thm, sg_num, clause_arr, num_of_clauses) =
let val vamp_proof_file = TextIO.openAppend
(File.platform_path(File.tmp_path (Path.basic "vampire_proof")))
val _ = File.write (File.tmp_path (Path.basic "vampire_checking_prf"))
("checking if proof found, thm is: " ^ string_of_thm thm)
val thisLine = TextIO.inputLine fromChild
in
if thisLine = ""
then (TextIO.output (vamp_proof_file, ("No proof output seen \n"));
TextIO.closeOut vamp_proof_file;
false)
else if thisLine = "% Proof found. Thanks to Tanya!\n"
then
(File.write (File.tmp_path (Path.basic "vampire_response")) thisLine;
startVampTransfer (fromChild, toParent, ppid, thmstring, goalstring,
childCmd, thm, sg_num, clause_arr, num_of_clauses))
else if (thisLine = "% Unprovable.\n" )
then
(File.write (File.tmp_path (Path.basic "vampire_response")) thisLine;
TextIO.output (toParent,childCmd^"\n" );
TextIO.flushOut toParent;
TextIO.output (vamp_proof_file, thisLine);
TextIO.closeOut vamp_proof_file;
(*TextIO.output (toParent, thisLine);
TextIO.flushOut toParent;
TextIO.output (toParent, "bar\n");
TextIO.flushOut toParent;*)
TextIO.output (toParent, thisLine^"\n");
TextIO.output (toParent, thmstring^"\n");
TextIO.output (toParent, goalstring^"\n");
TextIO.flushOut toParent;
Posix.Process.kill(Posix.Process.K_PROC ppid, Posix.Signal.usr2);
(* Attempt to prevent several signals from turning up simultaneously *)
Posix.Process.sleep(Time.fromSeconds 1);
true)
else if (thisLine = "% Proof not found. Time limit expired.\n")
then
(File.write (File.tmp_path (Path.basic "vampire_response")) thisLine;
TextIO.output (toParent,childCmd^"\n" );
TextIO.flushOut toParent;
TextIO.output (vamp_proof_file, thisLine);
TextIO.closeOut vamp_proof_file;
TextIO.output (toParent, thisLine^"\n");
TextIO.output (toParent, thmstring^"\n");
TextIO.output (toParent, goalstring^"\n");
TextIO.flushOut toParent;
Posix.Process.kill(Posix.Process.K_PROC ppid, Posix.Signal.usr2);
(* Attempt to prevent several signals from turning up simultaneously *)
Posix.Process.sleep(Time.fromSeconds 1);
true)
else
(TextIO.output (vamp_proof_file, thisLine);
TextIO.flushOut vamp_proof_file;
checkVampProofFound (fromChild, toParent, ppid, thmstring,
goalstring,childCmd, thm, sg_num, clause_arr, num_of_clauses))
end
(***********************************************************************)
(* Function used by the Isabelle process to read in a Vampire proof *)
(***********************************************************************)
fun getVampInput instr =
let val thisLine = TextIO.inputLine instr
val _ = File.write (File.tmp_path (Path.basic "vampire_line")) thisLine
in (* reconstructed proof string *)
if thisLine = "" then ("No output from reconstruction process.\n","","")
else if String.sub (thisLine, 0) = #"[" orelse
thisLine = "% Unprovable.\n" orelse
thisLine ="% Proof not found. Time limit expired.\n" orelse
String.isPrefix "Rules from" thisLine
then
let val thmstring = TextIO.inputLine instr
val goalstring = TextIO.inputLine instr
in (thisLine, thmstring, goalstring) end
else if thisLine = "Proof found but translation failed!"
then
let val thmstring = TextIO.inputLine instr
val goalstring = TextIO.inputLine instr
val _ = debug "getVampInput: translation of proof failed"
in (thisLine, thmstring, goalstring) end
else getVampInput instr
end
end;