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New command &genqbf to dump the QBF miter for ind inv computation.

This commit is contained in:
Alan Mishchenko 2015-06-23 20:48:24 -07:00
parent a26d8621f0
commit 9c0c460795
3 changed files with 241 additions and 2 deletions
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123
src/aig/gia/giaQbf.c
View File

@ -54,6 +54,126 @@ extern Cnf_Dat_t * Mf_ManGenerateCnf( Gia_Man_t * pGia, int nLutSize, int fCnfOb
/// FUNCTION DEFINITIONS ///
////////////////////////////////////////////////////////////////////////
/**Function*************************************************************
Synopsis [Generating QBF miter to solve the induction problem.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Vec_Int_t * Gia_GenCollectFlopIndexes( char * pStr, int nLutNum, int nLutSize, int nFlops )
{
int nDups;
char * pTemp;
Vec_Int_t * vFlops;
assert( nLutSize * nLutNum <= nFlops );
if ( pStr == NULL )
return Vec_IntStartNatural( nLutNum * nLutSize );
vFlops = Vec_IntAlloc( nLutNum * nLutSize );
pTemp = strtok( pStr, ", " );
while ( pTemp )
{
int iFlop = atoi(pTemp);
if ( iFlop >= nFlops )
{
printf( "Flop index (%d) exceeds the number of flops (%d).\n", iFlop, nFlops );
break;
}
Vec_IntPush( vFlops, iFlop );
pTemp = strtok( NULL, ", " );
}
if ( Vec_IntSize(vFlops) != nLutNum * nLutSize )
{
printf( "Gia_GenCollectFlopIndexes: Expecting %d flop indexes (instead of %d).\n", nLutNum * nLutSize, Vec_IntSize(vFlops) );
Vec_IntFree( vFlops );
return NULL;
}
nDups = Vec_IntCountDuplicates(vFlops);
if ( nDups )
{
printf( "Gia_GenCollectFlopIndexes: There are %d duplicated flops in the list.\n", nDups );
Vec_IntFree( vFlops );
return NULL;
}
return vFlops;
}
int Gia_GenCreateMux_rec( Gia_Man_t * pNew, int * pCtrl, int nCtrl, Vec_Int_t * vData, int Shift )
{
int iLit0, iLit1;
if ( nCtrl == 0 )
return Vec_IntEntry( vData, Shift );
iLit0 = Gia_GenCreateMux_rec( pNew, pCtrl, nCtrl-1, vData, Shift );
iLit1 = Gia_GenCreateMux_rec( pNew, pCtrl, nCtrl-1, vData, Shift + (1<<(nCtrl-1)) );
return Gia_ManHashMux( pNew, pCtrl[nCtrl-1], iLit1, iLit0 );
}
Vec_Int_t * Gia_GenCreateMuxes( Gia_Man_t * p, Gia_Man_t * pNew, Vec_Int_t * vFlops, int nLutNum, int nLutSize, Vec_Int_t * vParLits, int fUseRi )
{
Vec_Int_t * vLits = Vec_IntAlloc( nLutNum );
int i, k, iMux, iFlop, pCtrl[16];
int nPars = nLutNum * (1 << nLutSize);
// add MUXes for each group of flops
assert( Vec_IntSize(vFlops) == nLutNum * nLutSize );
for ( i = 0; i < nLutNum; i++ )
{
for ( k = 0; k < nLutSize; k++ )
{
iFlop = Vec_IntEntry(vFlops, i * nLutSize + k);
assert( iFlop >= 0 && iFlop < Gia_ManRegNum(p) );
if ( fUseRi )
pCtrl[k] = Gia_ManRi(p, iFlop)->Value;
else
pCtrl[k] = Gia_ManRo(p, iFlop)->Value;
}
iMux = Gia_GenCreateMux_rec( pNew, pCtrl, nLutSize, vParLits, i * (1 << nLutSize) );
Vec_IntPush( vLits, iMux );
}
return vLits;
}
Gia_Man_t * Gia_GenQbfMiter( Gia_Man_t * p, int nFrames, int nLutNum, int nLutSize, char * pStr, int fVerbose )
{
Gia_Obj_t * pObj;
Gia_Man_t * pTemp, * pNew;
int i, iMiter, nPars = nLutNum * (1 << nLutSize);
Vec_Int_t * vLits0, * vLits1, * vParLits;
Vec_Int_t * vFlops = Gia_GenCollectFlopIndexes( pStr, nLutNum, nLutSize, Gia_ManRegNum(p) );
// collect parameter literals (data vars)
vParLits = Vec_IntAlloc( nPars );
for ( i = 0; i < nPars; i++ )
Vec_IntPush( vParLits, i ? Abc_Var2Lit(i+1, 0) : 1 );
// create new manager
pNew = Gia_ManStart( Gia_ManObjNum(p) );
pNew->pName = Abc_UtilStrsav( p->pName );
pNew->pSpec = Abc_UtilStrsav( p->pSpec );
Gia_ManHashAlloc( pNew );
Gia_ManConst0(p)->Value = 0;
for ( i = 0; i < nPars; i++ )
Gia_ManAppendCi( pNew );
Gia_ManForEachCi( p, pObj, i )
pObj->Value = Gia_ManAppendCi( pNew );
Gia_ManForEachAnd( p, pObj, i )
pObj->Value = Gia_ManHashAnd( pNew, Gia_ObjFanin0Copy(pObj), Gia_ObjFanin1Copy(pObj) );
Gia_ManForEachCo( p, pObj, i )
pObj->Value = Gia_ObjFanin0Copy(pObj);
vLits0 = Gia_GenCreateMuxes( p, pNew, vFlops, nLutNum, nLutSize, vParLits, 0 );
vLits1 = Gia_GenCreateMuxes( p, pNew, vFlops, nLutNum, nLutSize, vParLits, 1 );
// create miter output
iMiter = Gia_ManHashAnd( pNew, Vec_IntEntry(vLits0, 0), Abc_LitNot(Vec_IntEntry(vLits1, 0)) );
iMiter = Gia_ManHashAnd( pNew, Abc_LitNot(iMiter), Abc_Var2Lit(1, 0) );
Gia_ManAppendCo( pNew, iMiter );
// cleanup
Vec_IntFree( vLits0 );
Vec_IntFree( vLits1 );
Vec_IntFree( vFlops );
Vec_IntFree( vParLits );
pNew = Gia_ManCleanup( pTemp = pNew );
Gia_ManStop( pTemp );
return pNew;
}
/**Function*************************************************************
Synopsis [Naive way to enumerate SAT assignments.]
@ -455,10 +575,11 @@ int Gia_QbfSolve( Gia_Man_t * pGia, int nPars, int nIterLimit, int nConfLimit, i
}
if ( RetValue == 0 )
{
int nZeros = Vec_IntCountZero( p->vValues );
printf( "Parameters: " );
assert( Vec_IntSize(p->vValues) == nPars );
Vec_IntPrintBinary( p->vValues );
printf( "\n" );
printf( " Statistics: 0=%d 1=%d\n", nZeros, Vec_IntSize(p->vValues) - nZeros );
}
if ( RetValue == -1 && nTimeOut && (Abc_Clock() - p->clkStart)/CLOCKS_PER_SEC >= nTimeOut )
printf( "The problem timed out after %d sec. ", nTimeOut );

117
src/base/abci/abc.c
View File

@ -438,6 +438,7 @@ static int Abc_CommandAbc9ICheck ( Abc_Frame_t * pAbc, int argc, cha
static int Abc_CommandAbc9SatTest ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9FFTest ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Qbf ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9GenQbf ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9SatFx ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Inse ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Maxi ( Abc_Frame_t * pAbc, int argc, char ** argv );
@ -1046,6 +1047,7 @@ void Abc_Init( Abc_Frame_t * pAbc )
Cmd_CommandAdd( pAbc, "ABC9", "&sattest", Abc_CommandAbc9SatTest, 0 );
Cmd_CommandAdd( pAbc, "ABC9", "&fftest", Abc_CommandAbc9FFTest, 0 );
Cmd_CommandAdd( pAbc, "ABC9", "&qbf", Abc_CommandAbc9Qbf, 0 );
Cmd_CommandAdd( pAbc, "ABC9", "&genqbf", Abc_CommandAbc9GenQbf, 0 );
Cmd_CommandAdd( pAbc, "ABC9", "&satfx", Abc_CommandAbc9SatFx, 0 );
Cmd_CommandAdd( pAbc, "ABC9", "&inse", Abc_CommandAbc9Inse, 0 );
Cmd_CommandAdd( pAbc, "ABC9", "&maxi", Abc_CommandAbc9Maxi, 0 );
@ -36752,6 +36754,121 @@ usage:
return 1;
}
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
int Abc_CommandAbc9GenQbf( Abc_Frame_t * pAbc, int argc, char ** argv )
{
extern Gia_Man_t * Gia_GenQbfMiter( Gia_Man_t * pGia, int nFrames, int nLutNum, int nLutSize, char * pStr, int fVerbose );
int nFrames = 1;
int nLutNum = 1;
int nLutSize = 6;
char * pStr = NULL;
int fVerbose = 0;
int c;
Gia_Man_t * pTemp;
Extra_UtilGetoptReset();
while ( ( c = Extra_UtilGetopt( argc, argv, "FKNSvh" ) ) != EOF )
{
switch ( c )
{
case 'F':
if ( globalUtilOptind >= argc )
{
Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
goto usage;
}
nFrames = atoi(argv[globalUtilOptind]);
globalUtilOptind++;
if ( nFrames < 0 )
goto usage;
break;
case 'K':
if ( globalUtilOptind >= argc )
{
Abc_Print( -1, "Command line switch \"-K\" should be followed by an integer.\n" );
goto usage;
}
nLutSize = atoi(argv[globalUtilOptind]);
globalUtilOptind++;
if ( nLutSize < 0 )
goto usage;
break;
case 'N':
if ( globalUtilOptind >= argc )
{
Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
goto usage;
}
nLutNum = atoi(argv[globalUtilOptind]);
globalUtilOptind++;
if ( nLutNum < 0 )
goto usage;
break;
case 'S':
if ( globalUtilOptind >= argc )
{
Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
goto usage;
}
pStr = Abc_UtilStrsav(argv[globalUtilOptind]);
globalUtilOptind++;
if ( pStr == NULL )
goto usage;
break;
case 'v':
fVerbose ^= 1;
break;
case 'h':
goto usage;
default:
goto usage;
}
}
if ( pAbc->pGia == NULL )
{
Abc_Print( -1, "There is no current GIA.\n" );
return 1;
}
if ( Gia_ManRegNum(pAbc->pGia) == 0 )
{
Abc_Print( -1, "Works only for sequential networks.\n" );
return 1;
}
if ( Gia_ManRegNum(pAbc->pGia) < nLutSize * nLutNum )
{
Abc_Print( -1, "The number of flops (%d) is less than required (%d).\n", Gia_ManRegNum(pAbc->pGia), nLutSize * nLutNum );
return 1;
}
if ( nFrames != 1 || nLutNum != 1 )
{
Abc_Print( -1, "Currently this commands works for one frame and one LUT.\n" );
return 1;
}
pTemp = Gia_GenQbfMiter( pAbc->pGia, nFrames, nLutNum, nLutSize, pStr, fVerbose );
Abc_FrameUpdateGia( pAbc, pTemp );
ABC_FREE( pStr );
return 0;
usage:
Abc_Print( -2, "usage: &genqbf [-FKN num] [-vh]\n" );
Abc_Print( -2, "\t generates QBF miter for computing an inductive invariant\n" );
Abc_Print( -2, "\t-F num : the number of time frames for induction [default = %d]\n", nFrames );
Abc_Print( -2, "\t-K num : the LUT size [default = %d]\n", nLutSize );
Abc_Print( -2, "\t-N num : the number of LUTs [default = %d]\n", nLutNum );
Abc_Print( -2, "\t-v : toggle verbose output [default = %s]\n", fVerbose? "yes": "no" );
Abc_Print( -2, "\t-h : print the command usage\n");
return 1;
}
/**Function*************************************************************
Synopsis []

3
src/base/abci/abcQbf.c
View File

@ -202,9 +202,10 @@ clkV = Abc_Clock() - clkV;
// report the results
if ( fFound )
{
int nZeros = Vec_IntCountZero( vPiValues );
printf( "Parameters: " );
Abc_NtkVectorPrintPars( vPiValues, nPars );
printf( "\n" );
printf( " Statistics: 0=%d 1=%d\n", nZeros, Vec_IntSize(vPiValues) - nZeros );
printf( "Solved after %d interations. ", nIters );
}
else if ( nIters == nItersMax )