luke
/
abc
mirror of https://github.com/YosysHQ/abc.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Adding CEC command &splitprove.

This commit is contained in:
Alan Mishchenko 2014-06-04 16:50:39 -07:00
parent 9c4bf6e11d
commit 87143c1182
2 changed files with 163 additions and 139 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
src/base/abci/abc.c
View File

@ -32876,7 +32876,7 @@ usage:
***********************************************************************/
int Abc_CommandAbc9SplitProve( Abc_Frame_t * pAbc, int argc, char ** argv )
{
extern Gia_Man_t * Cec_GiaSplitTest( Gia_Man_t * p, int nProcs, int nTimeOut, int nIterMax, int LookAhead, int fVerbose );
extern int Cec_GiaSplitTest( Gia_Man_t * p, int nProcs, int nTimeOut, int nIterMax, int LookAhead, int fVerbose );
int c, nProcs = 1, nTimeOut = 1, nIterMax = 0, LookAhead = 1, fVerbose = 0;
Extra_UtilGetoptReset();
while ( ( c = Extra_UtilGetopt( argc, argv, "PTILvh" ) ) != EOF )
@ -32949,7 +32949,8 @@ int Abc_CommandAbc9SplitProve( Abc_Frame_t * pAbc, int argc, char ** argv )
Abc_Print( -1, "Abc_CommandAbc9SplitProve(): The problem is sequential.\n" );
return 1;
}
Cec_GiaSplitTest( pAbc->pGia, nProcs, nTimeOut, nIterMax, LookAhead, fVerbose );
pAbc->Status = Cec_GiaSplitTest( pAbc->pGia, nProcs, nTimeOut, nIterMax, LookAhead, fVerbose );
pAbc->pCex = pAbc->pGia->pCexComb; pAbc->pGia->pCexComb = NULL;
return 0;
usage:

297
src/proof/cec/cecSplit.c
View File

@ -168,18 +168,6 @@ void Cec_GiaSplitExplore( Gia_Man_t * p )
SeeAlso []
***********************************************************************/
int Gia_SplitCofVar( Gia_Man_t * p )
{
Gia_Obj_t * pObj;
int i, iBest = -1, CostBest = -1;
if ( p->pRefs == NULL )
Gia_ManCreateRefs( p );
Gia_ManForEachPi( p, pObj, i )
if ( CostBest < Gia_ObjRefNum(p, pObj) )
iBest = i, CostBest = Gia_ObjRefNum(p, pObj);
assert( iBest >= 0 );
return iBest;
}
int * Gia_PermuteSpecialOrder( Gia_Man_t * p )
{
Vec_Int_t * vPerm;
@ -215,12 +203,26 @@ Gia_Man_t * Gia_PermuteSpecial( Gia_Man_t * p )
SeeAlso []
***********************************************************************/
int Gia_SplitCofVar2( Gia_Man_t * p, int LookAhead )
int Gia_SplitCofVar2( Gia_Man_t * p )
{
Gia_Obj_t * pObj;
int i, iBest = -1, CostBest = -1;
if ( p->pRefs == NULL )
Gia_ManCreateRefs( p );
Gia_ManForEachPi( p, pObj, i )
if ( CostBest < Gia_ObjRefNum(p, pObj) )
iBest = i, CostBest = Gia_ObjRefNum(p, pObj);
assert( iBest >= 0 );
return iBest;
}
int Gia_SplitCofVar( Gia_Man_t * p, int LookAhead )
{
Gia_Man_t * pPart;
int * pOrder = Gia_PermuteSpecialOrder( p );
int Cost0, Cost1, CostBest = ABC_INFINITY;
int i, iBest = -1;
int * pOrder, i, iBest = -1;
if ( LookAhead == 1 )
return Gia_SplitCofVar2( p );
pOrder = Gia_PermuteSpecialOrder( p );
LookAhead = Abc_MinInt( LookAhead, Gia_ManPiNum(p) );
for ( i = 0; i < LookAhead; i++ )
{
@ -232,26 +234,53 @@ int Gia_SplitCofVar2( Gia_Man_t * p, int LookAhead )
Cost1 = Gia_ManAndNum(pPart);
Gia_ManStop( pPart );
if ( CostBest > Cost0 + Cost1 )
CostBest = Cost0 + Cost1, iBest = pOrder[i];
/*
pPart = Gia_ManDupExist( p, pOrder[i] );
printf( "%2d : Var = %4d Refs = %3d %6d %6d -> %6d %6d -> %6d\n",
i, pOrder[i], Gia_ObjRefNum(p, Gia_ManPi(p, pOrder[i])),
Cost0, Cost1, Cost0+Cost1, Gia_ManAndNum(p), Gia_ManAndNum(pPart) );
Gia_ManStop( pPart );
printf( "%2d : Var = %4d Refs = %3d %6d %6d -> %6d\n",
i, pOrder[i], Gia_ObjRefNum(p, Gia_ManPi(p, pOrder[i])),
Cost0, Cost1, Cost0+Cost1 );
*/
// printf( "%2d : Var = %4d Refs = %3d %6d %6d -> %6d\n",
// i, pOrder[i], Gia_ObjRefNum(p, Gia_ManPi(p, pOrder[i])),
// Cost0, Cost1, Cost0+Cost1 );
if ( CostBest > Cost0 + Cost1 )
CostBest = Cost0 + Cost1, iBest = pOrder[i];
}
ABC_FREE( pOrder );
assert( iBest >= 0 );
return iBest;
}
/**Function*************************************************************
Synopsis []
Description []
SideEffects []
SeeAlso []
***********************************************************************/
Abc_Cex_t * Cec_SplitDeriveModel( Gia_Man_t * p, Cnf_Dat_t * pCnf, sat_solver * pSat )
{
Abc_Cex_t * pCex;
Gia_Obj_t * pObj;
int i, iLit, * pModel;
pModel = ABC_CALLOC( int, Gia_ManPiNum(p) );
Gia_ManForEachPi( p, pObj, i )
pModel[i] = sat_solver_var_value(pSat, pCnf->pVarNums[Gia_ObjId(p, pObj)]);
if ( p->vCofVars )
Vec_IntForEachEntry( p->vCofVars, iLit, i )
pModel[Abc_Lit2Var(iLit)] = !Abc_LitIsCompl(iLit);
pCex = Abc_CexCreate( 0, Gia_ManPiNum(p), pModel, 0, 0, 0 );
ABC_FREE( pModel );
return pCex;
}
/**Function*************************************************************
Synopsis []
@ -275,9 +304,7 @@ static inline Cnf_Dat_t * Cec_GiaDeriveGiaRemapped( Gia_Man_t * p )
static inline sat_solver * Cec_GiaDeriveSolver( Gia_Man_t * p, Cnf_Dat_t * pCnf, int nTimeOut )
{
sat_solver * pSat;
int i, fDerive = (pCnf == NULL);
if ( pCnf == NULL )
pCnf = Cec_GiaDeriveGiaRemapped( p );
int i;
pSat = sat_solver_new();
sat_solver_setnvars( pSat, pCnf->nVars );
for ( i = 0; i < pCnf->nClauses; i++ )
@ -285,12 +312,9 @@ static inline sat_solver * Cec_GiaDeriveSolver( Gia_Man_t * p, Cnf_Dat_t * pCnf,
{
// the problem is UNSAT
sat_solver_delete( pSat );
Cnf_DataFree( pCnf );
return NULL;
}
sat_solver_set_runtime_limit( pSat, nTimeOut ? nTimeOut * CLOCKS_PER_SEC + Abc_Clock(): 0 );
if ( fDerive )
Cnf_DataFree( pCnf );
return pSat;
}
static inline int Cnf_GiaSolveOne( Gia_Man_t * p, Cnf_Dat_t * pCnf, int nTimeOut, int * pnVars, int * pnConfs )
@ -306,42 +330,14 @@ static inline int Cnf_GiaSolveOne( Gia_Man_t * p, Cnf_Dat_t * pCnf, int nTimeOut
status = sat_solver_solve( pSat, NULL, NULL, (ABC_INT64_T)0, (ABC_INT64_T)0, (ABC_INT64_T)0, (ABC_INT64_T)0 );
*pnVars = sat_solver_nvars( pSat );
*pnConfs = sat_solver_nconflicts( pSat );
if ( status == l_True )
p->pCexComb = Cec_SplitDeriveModel( p, pCnf, pSat );
sat_solver_delete( pSat );
if ( status == l_Undef )
return -1;
if ( status == l_False )
return 1;
return 0;
/*
// get pattern
Vec_IntClear( vLits );
for ( i = 0; i < nFuncVars; i++ )
Vec_IntPush( vLits, Vec_IntEntry(vTests, Iter*nFuncVars + i) );
Gia_ManFaultAddOne( pM, pCnf, pSat, vLits, nFuncVars );
if ( pPars->fVerbose )
{
printf( "Iter%6d : ", Iter );
printf( "Var =%10d ", sat_solver_nvars(pSat) );
printf( "Clause =%10d ", sat_solver_nclauses(pSat) );
printf( "Conflict =%10d ", sat_solver_nconflicts(pSat) );
//Abc_PrintTime( 1, "Time", clkSat );
ABC_PRTr( "Solver time", clkSat );
}
*/
}
static inline int Cnf_GiaCheckOne( Vec_Ptr_t * vStack, Gia_Man_t * p, Cnf_Dat_t * pCnf, int nTimeOut, int * pnVars, int * pnConfs )
{
int status = Cnf_GiaSolveOne( p, pCnf, nTimeOut, pnVars, pnConfs );
if ( status == -1 )
{
Vec_PtrPush( vStack, p );
return 1;
}
Gia_ManStop( p );
if ( status == 1 )
return 1;
// satisfiable
return 0;
}
static inline void Cec_GiaSplitClean( Vec_Ptr_t * vStack )
{
@ -365,12 +361,12 @@ static inline void Cec_GiaSplitClean( Vec_Ptr_t * vStack )
***********************************************************************/
void Cec_GiaSplitPrint( int nIter, int Depth, int nVars, int nConfs, int fStatus, double Prog, abctime clk )
{
printf( "%6d : ", nIter );
printf( "Depth =%3d ", Depth );
printf( "SatVar =%7d ", nVars );
printf( "SatConf =%7d ", nConfs );
printf( "%s ", fStatus ? (fStatus == 1 ? "UNSAT " : "UNDECIDED") : "SAT " );
printf( "Progress = %.10f ", Prog );
printf( "%6d : ", nIter );
printf( "Depth =%3d ", Depth );
printf( "SatVar =%7d ", nVars );
printf( "SatConf =%7d ", nConfs );
printf( "%s ", fStatus ? (fStatus == 1 ? "UNSAT " : "UNDECIDED") : "SAT " );
printf( "Solved %8.4f %% ", 100*Prog );
Abc_PrintTime( 1, "Time", clk );
//ABC_PRTr( "Time", Abc_Clock()-clk );
}
@ -399,75 +395,99 @@ void Cec_GiaSplitPrintRefs( Gia_Man_t * p )
int Cec_GiaSplitTest2( Gia_Man_t * p, int nProcs, int nTimeOut, int nIterMax, int LookAhead, int fVerbose )
{
abctime clkTotal = Abc_Clock();
Gia_Man_t * pPart0, * pPart1, * pLast;
Vec_Ptr_t * vStack;
int nSatVars, nSatConfs, fSatUnsat;
int nIter, iVar, Depth, RetValue = -1;
Cnf_Dat_t * pCnf;
int nSatVars, nSatConfs;
int nIter, status, RetValue = -1;
double Progress = 0;
// create local copy
p = Gia_ManDup( p );
// start cofactored variables
assert( p->vCofVars == NULL );
p->vCofVars = Vec_IntAlloc( 100 );
// start with the current problem
vStack = Vec_PtrAlloc( 1000 );
if ( !Cnf_GiaCheckOne(vStack, p, NULL, nTimeOut, &nSatVars, &nSatConfs) )
RetValue = 0;
else
// check the problem
pCnf = Cec_GiaDeriveGiaRemapped( p );
status = Cnf_GiaSolveOne( p, pCnf, nTimeOut, &nSatVars, &nSatConfs );
Cnf_DataFree( pCnf );
if ( fVerbose )
Cec_GiaSplitPrint( 0, 0, nSatVars, nSatConfs, status, Progress, Abc_Clock() - clkTotal );
if ( status == 0 )
{
if ( fVerbose )
Cec_GiaSplitPrint( 0, 0, nSatVars, nSatConfs, -1, Progress, Abc_Clock() - clkTotal );
for ( nIter = 1; Vec_PtrSize(vStack) > 0; nIter++ )
{
// get the last AIG
pLast = (Gia_Man_t *)Vec_PtrPop( vStack );
// determine cofactoring variable
Depth = Vec_IntSize(pLast->vCofVars);
iVar = Gia_SplitCofVar2( pLast, LookAhead );
// cofactor
pPart0 = Gia_ManDupCofactor( pLast, iVar, 0 );
// create variable
pPart0->vCofVars = Vec_IntAlloc( Vec_IntSize(pLast->vCofVars) + 1 );
Vec_IntAppend( pPart0->vCofVars, pLast->vCofVars );
Vec_IntPush( pPart0->vCofVars, Abc_Var2Lit(iVar, 1) );
// check this AIG
fSatUnsat = Vec_PtrSize(vStack);
if ( !Cnf_GiaCheckOne(vStack, pPart0, NULL, nTimeOut, &nSatVars, &nSatConfs) )
{
Gia_ManStop( pLast );
RetValue = 0;
break;
}
fSatUnsat = (fSatUnsat == Vec_PtrSize(vStack));
if ( fSatUnsat )
Progress += 1.0 / pow(2, Depth + 1);
if ( fVerbose )
Cec_GiaSplitPrint( nIter, Depth, nSatVars, nSatConfs, fSatUnsat?1:-1, Progress, Abc_Clock() - clkTotal );
// cofactor
pPart1 = Gia_ManDupCofactor( pLast, iVar, 1 );
// create variable
pPart1->vCofVars = Vec_IntAlloc( Vec_IntSize(pLast->vCofVars) + 1 );
Vec_IntAppend( pPart1->vCofVars, pLast->vCofVars );
Vec_IntPush( pPart1->vCofVars, Abc_Var2Lit(iVar, 0) );
Gia_ManStop( pLast );
// check this AIG
fSatUnsat = Vec_PtrSize(vStack);
if ( !Cnf_GiaCheckOne(vStack, pPart1, NULL, nTimeOut, &nSatVars, &nSatConfs) )
{
RetValue = 0;
break;
}
fSatUnsat = (fSatUnsat == Vec_PtrSize(vStack));
if ( fSatUnsat )
Progress += 1.0 / pow(2, Depth + 1);
if ( fVerbose )
Cec_GiaSplitPrint( nIter, Depth, nSatVars, nSatConfs, fSatUnsat?1:-1, Progress, Abc_Clock() - clkTotal );
if ( nIterMax && Vec_PtrSize(vStack) >= nIterMax )
break;
}
if ( Vec_PtrSize(vStack) == 0 )
RetValue = 1;
printf( "The problem is SAT without cofactoring.\n" );
return 0;
}
if ( status == 1 )
{
printf( "The problem is UNSAT without cofactoring.\n" );
return 1;
}
assert( status == -1 );
// create local copy
vStack = Vec_PtrAlloc( 1000 );
Vec_PtrPush( vStack, Gia_ManDup(p) );
// start with the current problem
for ( nIter = 1; Vec_PtrSize(vStack) > 0; nIter++ )
{
// get the last AIG
Gia_Man_t * pLast = (Gia_Man_t *)Vec_PtrPop( vStack );
// determine cofactoring variable
int Depth = pLast->vCofVars ? Vec_IntSize(pLast->vCofVars) : 0;
int iVar = Gia_SplitCofVar( pLast, LookAhead );
// cofactor
Gia_Man_t * pPart = Gia_ManDupCofactor( pLast, iVar, 0 );
if ( pLast->vCofVars == NULL )
pLast->vCofVars = Vec_IntAlloc( 100 );
// create variable
pPart->vCofVars = Vec_IntAlloc( Vec_IntSize(pLast->vCofVars) + 1 );
Vec_IntAppend( pPart->vCofVars, pLast->vCofVars );
Vec_IntPush( pPart->vCofVars, Abc_Var2Lit(iVar, 1) );
// solve the problem
pCnf = Cec_GiaDeriveGiaRemapped( pPart );
status = Cnf_GiaSolveOne( pPart, pCnf, nTimeOut, &nSatVars, &nSatConfs );
Cnf_DataFree( pCnf );
if ( status == 1 )
Progress += 1.0 / pow(2, Depth + 1);
if ( fVerbose )
Cec_GiaSplitPrint( nIter, Depth, nSatVars, nSatConfs, status, Progress, Abc_Clock() - clkTotal );
if ( status == 0 ) // SAT
{
p->pCexComb = pPart->pCexComb; pPart->pCexComb = NULL;
Gia_ManStop( pLast );
Gia_ManStop( pPart );
RetValue = 0;
break;
}
if ( status == 1 ) // UNSAT
Gia_ManStop( pPart );
else // UNDEC
Vec_PtrPush( vStack, pPart );
// cofactor
pPart = Gia_ManDupCofactor( pLast, iVar, 1 );
// create variable
pPart->vCofVars = Vec_IntAlloc( Vec_IntSize(pLast->vCofVars) + 1 );
Vec_IntAppend( pPart->vCofVars, pLast->vCofVars );
Vec_IntPush( pPart->vCofVars, Abc_Var2Lit(iVar, 0) );
Gia_ManStop( pLast );
// solve the problem
pCnf = Cec_GiaDeriveGiaRemapped( pPart );
status = Cnf_GiaSolveOne( pPart, pCnf, nTimeOut, &nSatVars, &nSatConfs );
Cnf_DataFree( pCnf );
if ( status == 1 )
Progress += 1.0 / pow(2, Depth + 1);
if ( fVerbose )
Cec_GiaSplitPrint( nIter, Depth, nSatVars, nSatConfs, status, Progress, Abc_Clock() - clkTotal );
if ( status == 0 ) // SAT
{
p->pCexComb = pPart->pCexComb; pPart->pCexComb = NULL;
Gia_ManStop( pPart );
RetValue = 0;
break;
}
if ( status == 1 ) // UNSAT
Gia_ManStop( pPart );
else // UNDEC
Vec_PtrPush( vStack, pPart );
if ( nIterMax && Vec_PtrSize(vStack) >= nIterMax )
break;
}
if ( Vec_PtrSize(vStack) == 0 )
RetValue = 1;
// finish
Cec_GiaSplitClean( vStack );
if ( RetValue == 0 )
printf( "Problem is SAT " );
@ -530,9 +550,11 @@ int Cec_GiaSplitTest( Gia_Man_t * p, int nProcs, int nTimeOut, int nIterMax, int
Par_ThData_t ThData[PAR_THR_MAX];
pthread_t WorkerThread[PAR_THR_MAX];
Vec_Ptr_t * vStack;
Cnf_Dat_t * pCnf;
double Progress = 0;
int i, status, nSatVars, nSatConfs;
int nIter = 0, RetValue = -1, fWorkToDo = 1;
Abc_CexFreeP( &p->pCexComb );
if ( fVerbose )
printf( "Solving CEC problem by cofactoring with the following parameters:\n" );
if ( fVerbose )
@ -543,7 +565,9 @@ int Cec_GiaSplitTest( Gia_Man_t * p, int nProcs, int nTimeOut, int nIterMax, int
nProcs--;
assert( nProcs >= 1 && nProcs <= PAR_THR_MAX );
// check the problem
status = Cnf_GiaSolveOne( p, NULL, nTimeOut, &nSatVars, &nSatConfs );
pCnf = Cec_GiaDeriveGiaRemapped( p );
status = Cnf_GiaSolveOne( p, pCnf, nTimeOut, &nSatVars, &nSatConfs );
Cnf_DataFree( pCnf );
if ( fVerbose )
Cec_GiaSplitPrint( 0, 0, nSatVars, nSatConfs, status, Progress, Abc_Clock() - clkTotal );
if ( status == 0 )
@ -558,12 +582,8 @@ int Cec_GiaSplitTest( Gia_Man_t * p, int nProcs, int nTimeOut, int nIterMax, int
}
assert( status == -1 );
// create local copy
p = Gia_ManDup( p );
vStack = Vec_PtrAlloc( 1000 );
Vec_PtrPush( vStack, p );
// start cofactored variables
assert( p->vCofVars == NULL );
p->vCofVars = Vec_IntAlloc( 100 );
Vec_PtrPush( vStack, Gia_ManDup(p) );
// start threads
for ( i = 0; i < nProcs; i++ )
{
@ -593,18 +613,21 @@ int Cec_GiaSplitTest( Gia_Man_t * p, int nProcs, int nTimeOut, int nIterMax, int
if ( ThData[i].p != NULL )
{
Gia_Man_t * pLast = ThData[i].p;
int Depth = Vec_IntSize(pLast->vCofVars);
int Depth = pLast->vCofVars ? Vec_IntSize(pLast->vCofVars) : 0;
if ( pLast->vCofVars == NULL )
pLast->vCofVars = Vec_IntAlloc( 100 );
if ( fVerbose )
Cec_GiaSplitPrint( i, Depth, ThData[i].nVars, ThData[i].nConfs, ThData[i].Result, Progress, Abc_Clock() - clkTotal );
if ( ThData[i].Result == 0 ) // SAT
{
p->pCexComb = pLast->pCexComb; pLast->pCexComb = NULL;
RetValue = 0;
goto finish;
}
if ( ThData[i].Result == -1 ) // UNDEC
{
// determine cofactoring variable
int iVar = Gia_SplitCofVar2( pLast, LookAhead );
int iVar = Gia_SplitCofVar( pLast, LookAhead );
// cofactor
Gia_Man_t * pPart = Gia_ManDupCofactor( pLast, iVar, 0 );
pPart->vCofVars = Vec_IntAlloc( Vec_IntSize(pLast->vCofVars) + 1 );