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/**************************************************************/
/* ********************************************************** */
/* * * */
/* * PROOF DOCUMENTATION * */
/* * * */
/* * $Module: DOCPROOF * */
/* * * */
/* * Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001 * */
/* * MPI fuer Informatik * */
/* * * */
/* * This program is free software; you can redistribute * */
/* * it and/or modify it under the terms of the GNU * */
/* * General Public License as published by the Free * */
/* * Software Foundation; either version 2 of the License, * */
/* * or (at your option) any later version. * */
/* * * */
/* * This program is distributed in the hope that it will * */
/* * be useful, but WITHOUT ANY WARRANTY; without even * */
/* * the implied warranty of MERCHANTABILITY or FITNESS * */
/* * FOR A PARTICULAR PURPOSE. See the GNU General Public * */
/* * License for more details. * */
/* * * */
/* * You should have received a copy of the GNU General * */
/* * Public License along with this program; if not, write * */
/* * to the Free Software Foundation, Inc., 59 Temple * */
/* * Place, Suite 330, Boston, MA 02111-1307 USA * */
/* * * */
/* * * */
/* $Revision: 21527 $ * */
/* $State$ * */
/* $Date: 2005-04-24 21:10:28 -0700 (Sun, 24 Apr 2005) $ * */
/* $Author: duraid $ * */
/* * * */
/* * Contact: * */
/* * Christoph Weidenbach * */
/* * MPI fuer Informatik * */
/* * Stuhlsatzenhausweg 85 * */
/* * 66123 Saarbruecken * */
/* * Email: weidenb@mpi-sb.mpg.de * */
/* * Germany * */
/* * * */
/* ********************************************************** */
/**************************************************************/
/* $RCSfile$ */
/**************************************************************/
/* Includes */
/**************************************************************/
#include "doc-proof.h"
/**************************************************************/
/* Global Variables */
/**************************************************************/
int dp_DEPTH;
/**************************************************************/
/* Functions */
/**************************************************************/
void dp_Init(void)
{
dp_DEPTH = 0;
}
static void dp_FPrintDFGProof(LIST Clauses, const char *FilePrefix,
FLAGSTORE Flags, PRECEDENCE Precedence)
/*********************************************************
INPUT: A list of clauses representing a proof, a
string indicating a file name prefix, a flag
store and a precedence.
RETURNS: void.
EFFECT: Outputs the proof in DFG proof format to
<FilePrefix>.prf
**********************************************************/
{
FILE *Output;
CLAUSE Clause;
LIST AxClauses,ConClauses,ProofClauses,Scan;
char *name;
AxClauses = ConClauses = ProofClauses = list_Nil();
name = memory_Malloc(sizeof(char)*(strlen(FilePrefix)+5));
sprintf(name,"%s.prf", FilePrefix);
Output = misc_OpenFile(name,"w");
fputs("begin_problem(Unknown).\n\n", Output);
fputs("list_of_descriptions.\n", Output);
fputs("name({*", Output);
fputs(FilePrefix, Output);
fputs("*}).\n", Output);
fputs("author({*SPASS ", Output);
fputs(misc_VERSION, Output);
fputs("*}).\n", Output);
fputs("status(unsatisfiable).\n", Output);
fputs("description({*File generated by SPASS containing a proof.*}).\n", Output);
fputs("end_of_list.\n\n", Output);
fputs("list_of_symbols.\n", Output);
fol_FPrintDFGSignature(Output);
fputs("end_of_list.\n\n", Output);
for (Scan=Clauses;!list_Empty(Scan);Scan=list_Cdr(Scan)) {
Clause = (CLAUSE)list_Car(Scan);
if (clause_IsFromInput(Clause)) {
if (clause_GetFlag(Clause, CONCLAUSE))
ConClauses = list_Cons(Clause, ConClauses);
else
AxClauses = list_Cons(Clause, AxClauses);
}
else
ProofClauses = list_Cons(Clause, ProofClauses);
}
ConClauses = list_NReverse(ConClauses);
AxClauses = list_NReverse(AxClauses);
ProofClauses = list_NReverse(ProofClauses);
clause_FPrintCnfDFG(Output, FALSE, AxClauses, ConClauses, Flags, Precedence);
fputs("\nlist_of_proof(SPASS).\n", Output);
for (Scan=ProofClauses; !list_Empty(Scan); Scan=list_Cdr(Scan)) {
clause_FPrintDFGStep(Output,list_Car(Scan),TRUE);
}
fputs("end_of_list.\n\n", Output);
fputs("end_problem.\n\n", Output);
misc_CloseFile(Output, name);
fputs("\nDFG Proof printed to: ", stdout);
puts(name);
list_Delete(ConClauses);
list_Delete(AxClauses);
list_Delete(ProofClauses);
memory_Free(name, sizeof(char)*(strlen(FilePrefix)+5));
}
LIST dp_PrintProof(PROOFSEARCH Search, LIST Clauses, const char *FilePrefix)
/*********************************************************
INPUT: A proofsearch object, a list of empty clauses and
the prefix of the output file name.
RETURNS: The list of clauses required for the proof.
MEMORY: The returned list must be freed.
EFFECT: The proof is printed both to standard output and
to the file <FilePrefix>.prf.
**********************************************************/
{
LIST ProofClauses,Scan,EmptyClauses,AllClauses, ReducedProof;
LIST Missing, Incomplete, SplitClauses;
FLAGSTORE Flags;
Flags = prfs_Store(Search);
Missing = pcheck_ConvertParentsInSPASSProof(Search, Clauses);
if (!list_Empty(Missing)) {
puts("\nNOTE: clauses with following numbers have not been found:");
for (; !list_Empty(Missing); Missing = list_Pop(Missing))
printf("%d ", (int)list_Car(Missing));
putchar('\n');
}
EmptyClauses = list_Copy(Clauses);
ProofClauses = list_Nil();
AllClauses = list_Nconc(list_Copy(prfs_DocProofClauses(Search)),
list_Nconc(list_Copy(prfs_UsableClauses(Search)),
list_Copy(prfs_WorkedOffClauses(Search))));
/*
* collect proof clauses by noodling upward in the
* proof tree, starting from <EmptyClauses>.
* Before, add all splitting clauses to avoid gaps in split tree
*/
SplitClauses = list_Nil();
for (Scan = AllClauses; !list_Empty(Scan); Scan = list_Cdr(Scan))
if (clause_IsFromSplitting(list_Car(Scan)))
SplitClauses = list_Cons(list_Car(Scan), SplitClauses);
/* mark all needed clauses */
pcheck_ClauseListRemoveFlag(EmptyClauses, MARKED);
pcheck_ClauseListRemoveFlag(AllClauses, MARKED);
pcheck_MarkRecursive(EmptyClauses);
pcheck_MarkRecursive(SplitClauses);
/* collect all marked clauses */
ProofClauses = list_Nil();
for (Scan = AllClauses; !list_Empty(Scan); Scan = list_Cdr(Scan)) {
if (clause_GetFlag(list_Car(Scan), MARKED))
ProofClauses = list_Cons(list_Car(Scan), ProofClauses);
}
/* build reduced proof */
ProofClauses = list_Nconc(ProofClauses, list_Copy(EmptyClauses));
ProofClauses = pcheck_ClauseNumberMergeSort(ProofClauses);
ReducedProof = pcheck_ReduceSPASSProof(ProofClauses);
dp_SetProofDepth(pcheck_SeqProofDepth(ReducedProof));
pcheck_ParentPointersToParentNumbers(AllClauses);
pcheck_ParentPointersToParentNumbers(Clauses);
/* check reduced proof for clauses whose parents have been marked as
incomplete (HIDDEN flag) by ConvertParentsInSPASSProof */
Incomplete = list_Nil();
for (Scan = ReducedProof; !list_Empty(Scan); Scan = list_Cdr(Scan)) {
if (clause_GetFlag(list_Car(Scan), HIDDEN))
Incomplete = list_Cons(list_Car(Scan), Incomplete);
}
if (!list_Empty(Incomplete)) {
puts("NOTE: Following clauses in reduced proof have incomplete parent sets:");
for (Scan = Incomplete; !list_Empty(Scan); Scan = list_Cdr(Scan))
printf("%d ", clause_Number(list_Car(Scan)));
putchar('\n');
}
printf("\n\nHere is a proof with depth %d, length %d :\n",
dp_ProofDepth(), list_Length(ReducedProof));
clause_ListPrint(ReducedProof);
if (flag_GetFlagValue(Flags, flag_FPDFGPROOF))
dp_FPrintDFGProof(ReducedProof, FilePrefix, Flags, prfs_Precedence(Search));
fflush(stdout);
list_Delete(EmptyClauses);
list_Delete(AllClauses);
list_Delete(ProofClauses);
list_Delete(SplitClauses);
list_Delete(Incomplete);
return ReducedProof;
}
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