/**CFile****************************************************************

  FileName    [giaExist.c]

  SystemName  [ABC: Logic synthesis and verification system.]

  PackageName [Scalable AIG package.]

  Synopsis    [Existential quantification.]

  Author      [Alan Mishchenko]
  
  Affiliation [UC Berkeley]

  Date        [Ver. 1.0. Started - June 20, 2005.]

  Revision    [$Id: giaExist.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $]

***********************************************************************/

#include "gia.h"
#include "misc/util/utilTruth.h"

ABC_NAMESPACE_IMPL_START

////////////////////////////////////////////////////////////////////////
///                        DECLARATIONS                              ///
////////////////////////////////////////////////////////////////////////

////////////////////////////////////////////////////////////////////////
///                     FUNCTION DEFINITIONS                         ///
////////////////////////////////////////////////////////////////////////

/**Function*************************************************************

  Synopsis    [Existentially quantified several variables.]

  Description []
               
  SideEffects []

  SeeAlso     []

***********************************************************************/

static inline word * Gia_ManQuantInfoId( Gia_Man_t * p, int iObj )       { return Vec_WrdEntryP( p->vSuppWords, p->nSuppWords * iObj ); }
static inline word * Gia_ManQuantInfo( Gia_Man_t * p, Gia_Obj_t * pObj ) { return Gia_ManQuantInfoId( p, Gia_ObjId(p, pObj) );      }

static inline void   Gia_ObjCopyGetTwoArray( Gia_Man_t * p, int iObj, int LitsOut[2] )      
{ 
    int * pLits = Vec_IntEntryP( &p->vCopiesTwo, 2*iObj );
    LitsOut[0] = pLits[0];
    LitsOut[1] = pLits[1];
}
static inline void   Gia_ObjCopySetTwoArray( Gia_Man_t * p, int iObj, int LitsIn[2] )      
{ 
    int * pLits = Vec_IntEntryP( &p->vCopiesTwo, 2*iObj );
    pLits[0] = LitsIn[0];
    pLits[1] = LitsIn[1];
}


/**Function*************************************************************

  Synopsis    [Existentially quantified several variables.]

  Description []
               
  SideEffects []

  SeeAlso     []

***********************************************************************/
int Gia_ManQuantVerify_rec( Gia_Man_t * p, int iObj, int CiId )
{
    Gia_Obj_t * pObj;
    if ( Gia_ObjIsTravIdCurrentId( p, iObj ) )
        return 0;
    Gia_ObjSetTravIdCurrentId( p, iObj );
    pObj = Gia_ManObj( p, iObj );
    if ( Gia_ObjIsCi(pObj) )
        return Gia_ObjCioId(pObj) == CiId;
    return Gia_ManQuantVerify_rec( p, Gia_ObjFaninId0(pObj, iObj), CiId ) ||
           Gia_ManQuantVerify_rec( p, Gia_ObjFaninId1(pObj, iObj), CiId );
}
void Gia_ManQuantVerify( Gia_Man_t * p, int iObj )
{
    word * pInfo = Gia_ManQuantInfoId( p, iObj );  int i, CiId;
    assert( Gia_ObjIsAnd(Gia_ManObj(p, iObj)) );
    Vec_IntForEachEntry( &p->vSuppVars, CiId, i )
    {
        Gia_ManIncrementTravId( p );
        if ( Abc_TtGetBit(pInfo, i) != Gia_ManQuantVerify_rec(p, iObj, CiId) )
            printf( "Mismatch at node %d related to CI %d (%d).\n", iObj, CiId, Abc_TtGetBit(pInfo, i) );
    }
}


void Gia_ManQuantSetSuppStart( Gia_Man_t * p )
{
    assert( Gia_ManObjNum(p) == 1 );
    assert( p->vSuppWords == NULL );
    assert( Vec_IntSize(&p->vSuppVars) == 0 );
    p->iSuppPi    = 0;
    p->nSuppWords = 1;
    p->vSuppWords = Vec_WrdAlloc( 1000 );
    Vec_WrdPush( p->vSuppWords, 0 );
}
void Gia_ManQuantSetSuppZero( Gia_Man_t * p )
{
    int w;
    for ( w = 0; w < p->nSuppWords; w++ )
        Vec_WrdPush( p->vSuppWords, 0 );
    assert( Vec_WrdSize(p->vSuppWords) == p->nSuppWords * Gia_ManObjNum(p) );
}
void Gia_ManQuantSetSuppCi( Gia_Man_t * p, Gia_Obj_t * pObj )
{
    assert( Gia_ObjIsCi(pObj) );
    assert( p->vSuppWords != NULL );
    if ( p->iSuppPi == 64 * p->nSuppWords )
    {
        word Data; int w, Count = 0, Size = Vec_WrdSize(p->vSuppWords);
        Vec_Wrd_t * vTemp = Vec_WrdAlloc( Size ? 2 * Size : 1000 ); 
        Vec_WrdForEachEntry( p->vSuppWords, Data, w )
        {
            Vec_WrdPush( vTemp, Data );
            if ( ++Count == p->nSuppWords )
            {
                Vec_WrdPush( vTemp, 0 );
                Count = 0;
            }
        }
        Vec_WrdFree( p->vSuppWords );
        p->vSuppWords = vTemp;
        p->nSuppWords++;
        assert( Vec_WrdSize(p->vSuppWords) == p->nSuppWords * Gia_ManObjNum(p) );
        //printf( "Resizing to %d words.\n", p->nSuppWords );
    }
    assert( p->iSuppPi == Vec_IntSize(&p->vSuppVars) );
    Vec_IntPush( &p->vSuppVars, Gia_ObjCioId(pObj) );
    Abc_TtSetBit( Gia_ManQuantInfo(p, pObj), p->iSuppPi++ );
}
void Gia_ManQuantSetSuppAnd( Gia_Man_t * p, Gia_Obj_t * pObj )
{
    int iObj  = Gia_ObjId(p, pObj);
    int iFan0 = Gia_ObjFaninId0(pObj, iObj);
    int iFan1 = Gia_ObjFaninId1(pObj, iObj);
    assert( Gia_ObjIsAnd(pObj) );
    Gia_ManQuantSetSuppZero( p );
    Abc_TtOr( Gia_ManQuantInfo(p, pObj), Gia_ManQuantInfoId(p, iFan0), Gia_ManQuantInfoId(p, iFan1), p->nSuppWords );
}
int Gia_ManQuantCheckSupp( Gia_Man_t * p, int iObj, int iSupp )
{
    return Abc_TtGetBit( Gia_ManQuantInfoId(p, iObj), iSupp );
}
void Gia_ManQuantUpdateCiSupp( Gia_Man_t * p, int iObj )
{
    if ( Abc_TtIsConst0( Gia_ManQuantInfoId(p, iObj), p->nSuppWords ) )
        Gia_ManQuantSetSuppCi( p, Gia_ManObj(p, iObj) );
    assert( !Abc_TtIsConst0( Gia_ManQuantInfoId(p, iObj), p->nSuppWords ) );
}
int Gia_ManQuantCheckOverlap( Gia_Man_t * p, int iObj )
{
    return Abc_TtIntersect( Gia_ManQuantInfoId(p, iObj), Gia_ManQuantInfoId(p, 0), p->nSuppWords, 0 );
}
void Gia_ManQuantMarkUsedCis( Gia_Man_t * p, int(*pFuncCiToKeep)(void *, int), void * pData )
{
    int i, CiId;
    word * pInfo = Gia_ManQuantInfoId( p, 0 );
    Abc_TtClear( pInfo, p->nSuppWords );
    assert( Abc_TtIsConst0(pInfo, p->nSuppWords) );
    Vec_IntForEachEntry( &p->vSuppVars, CiId, i )
        if ( !pFuncCiToKeep( pData, CiId ) ) // quant var
            Abc_TtSetBit( pInfo, i );
}

int Gia_ManQuantCountUsed_rec( Gia_Man_t * p, int iObj )
{
    Gia_Obj_t * pObj; int Count = 1;
    if ( Gia_ObjIsTravIdCurrentId( p, iObj ) )
        return 0;
    Gia_ObjSetTravIdCurrentId( p, iObj );
    pObj = Gia_ManObj( p, iObj );
    if ( Gia_ObjIsCi(pObj) )
        return 0;
    if ( Gia_ManQuantCheckSupp(p, Gia_ObjFaninId0(pObj, iObj), p->iSuppPi) )
        Count += Gia_ManQuantCountUsed_rec( p, Gia_ObjFaninId0(pObj, iObj) );
    if ( Gia_ManQuantCheckSupp(p, Gia_ObjFaninId1(pObj, iObj), p->iSuppPi) )
        Count += Gia_ManQuantCountUsed_rec( p, Gia_ObjFaninId1(pObj, iObj) );
    return Count;
}
int Gia_ManQuantCountUsed( Gia_Man_t * p, int iObj )
{
    Gia_ManIncrementTravId( p );
    return Gia_ManQuantCountUsed_rec( p, iObj );
}

void Gia_ManQuantDupConeSupp_rec( Gia_Man_t * pNew, Gia_Man_t * p, Gia_Obj_t * pObj, Vec_Int_t * vCis, Vec_Int_t * vObjs, int(*pFuncCiToKeep)(void *, int), void * pData )
{
    int iLit0, iLit1, iObj = Gia_ObjId( p, pObj );
    int iLit = Gia_ObjCopyArray( p, iObj );
    if ( iLit >= 0 )
        return;
    if ( Gia_ObjIsCi(pObj) )
    {
        int iLit = Gia_ManAppendCi( pNew );
        Gia_Obj_t * pObjNew = Gia_ManObj( pNew, Abc_Lit2Var(iLit) );
        Gia_ManQuantSetSuppZero( pNew );
        if ( !pFuncCiToKeep( pData, Gia_ObjCioId(pObj) ) )
        {
            //printf( "Collecting CI %d\n", Gia_ObjCioId(pObj)+1 );
            Gia_ManQuantSetSuppCi( pNew, pObjNew );
        }
        Gia_ObjSetCopyArray( p, iObj, iLit );
        Vec_IntPush( vCis, iObj );
        return;
    }
    assert( Gia_ObjIsAnd(pObj) );
    Gia_ManQuantDupConeSupp_rec( pNew, p, Gia_ObjFanin0(pObj), vCis, vObjs, pFuncCiToKeep, pData );
    Gia_ManQuantDupConeSupp_rec( pNew, p, Gia_ObjFanin1(pObj), vCis, vObjs, pFuncCiToKeep, pData );
    iLit0 = Gia_ObjCopyArray( p, Gia_ObjFaninId0(pObj, iObj) );
    iLit1 = Gia_ObjCopyArray( p, Gia_ObjFaninId1(pObj, iObj) );
    iLit0 = Abc_LitNotCond( iLit0, Gia_ObjFaninC0(pObj) );
    iLit1 = Abc_LitNotCond( iLit1, Gia_ObjFaninC1(pObj) );
    iLit  = Gia_ManHashAnd( pNew, iLit0, iLit1 );
    Gia_ObjSetCopyArray( p, iObj, iLit );
    Vec_IntPush( vObjs, iObj );
}
Gia_Man_t * Gia_ManQuantDupConeSupp( Gia_Man_t * p, int iLit, int(*pFuncCiToKeep)(void *, int), void * pData, Vec_Int_t ** pvCis, int * pOutLit )
{
    Gia_Man_t * pNew; int i, iLit0, iObj;
    Gia_Obj_t * pObj, * pRoot = Gia_ManObj( p, Abc_Lit2Var(iLit) );
    Vec_Int_t * vCis = Vec_IntAlloc( 1000 );
    Vec_Int_t * vObjs = Vec_IntAlloc( 1000 );
    assert( Gia_ObjIsAnd(pRoot) );
    if ( Vec_IntSize(&p->vCopies) < Gia_ManObjNum(p) )
        Vec_IntFillExtra( &p->vCopies, Gia_ManObjNum(p), -1 );
    pNew = Gia_ManStart( 1000 );
    Gia_ManHashStart( pNew ); 
    Gia_ManQuantSetSuppStart( pNew );
    Gia_ManQuantDupConeSupp_rec( pNew, p, pRoot, vCis, vObjs, pFuncCiToKeep, pData );
    iLit0 = Gia_ObjCopyArray( p, Abc_Lit2Var(iLit) );
    iLit0 = Abc_LitNotCond( iLit0, Abc_LitIsCompl(iLit) );
    if ( pOutLit ) *pOutLit = iLit0;
    Gia_ManForEachObjVec( vCis, p, pObj, i )
        Gia_ObjSetCopyArray( p, Gia_ObjId(p, pObj), -1 );
    Gia_ManForEachObjVec( vObjs, p, pObj, i )
        Gia_ObjSetCopyArray( p, Gia_ObjId(p, pObj), -1 );
    //assert( Vec_IntCountLarger(&p->vCopies, -1) == 0 );
    Vec_IntFree( vObjs );
    // remap into CI Ids
    Vec_IntForEachEntry( vCis, iObj, i )
        Vec_IntWriteEntry( vCis, i, Gia_ManIdToCioId(p, iObj) );
    if ( pvCis ) *pvCis = vCis;
    return pNew;
}
void Gia_ManQuantExist_rec( Gia_Man_t * p, int iObj, int pRes[2] )
{
    Gia_Obj_t * pObj;
    int Lits0[2], Lits1[2], pFans[2], fCompl[2];
    if ( Gia_ObjIsTravIdCurrentId( p, iObj ) )
    {
        Gia_ObjCopyGetTwoArray( p, iObj, pRes );
        return;
    }
    Gia_ObjSetTravIdCurrentId( p, iObj );
    pObj = Gia_ManObj( p, iObj );
    if ( Gia_ObjIsCi(pObj) )
    {
        pRes[0] = 0; pRes[1] = 1;
        Gia_ObjCopySetTwoArray( p, iObj, pRes );
        return;
    }
    pFans[0]  = Gia_ObjFaninId0( pObj, iObj );
    pFans[1]  = Gia_ObjFaninId1( pObj, iObj );
    fCompl[0] = Gia_ObjFaninC0( pObj );
    fCompl[1] = Gia_ObjFaninC1( pObj );
    if ( Gia_ManQuantCheckSupp(p, pFans[0], p->iSuppPi) )
        Gia_ManQuantExist_rec( p, pFans[0], Lits0 );
    else
        Lits0[0] = Lits0[1] = Abc_Var2Lit( pFans[0], 0 );
    if ( Gia_ManQuantCheckSupp(p, pFans[1], p->iSuppPi) )
        Gia_ManQuantExist_rec( p, pFans[1], Lits1 );
    else
        Lits1[0] = Lits1[1] = Abc_Var2Lit( pFans[1], 0 );
    pRes[0] = Gia_ManHashAnd( p, Abc_LitNotCond(Lits0[0], fCompl[0]), Abc_LitNotCond(Lits1[0], fCompl[1]) );
    pRes[1] = Gia_ManHashAnd( p, Abc_LitNotCond(Lits0[1], fCompl[0]), Abc_LitNotCond(Lits1[1], fCompl[1]) );
    Gia_ObjCopySetTwoArray( p, iObj, pRes );
}
int Gia_ManQuantExist2( Gia_Man_t * p0, int iLit, int(*pFuncCiToKeep)(void *, int), void * pData )
{
//    abctime clk = Abc_Clock();
    Gia_Man_t * pNew;
    Vec_Int_t * vOuts, * vOuts2, * vCis; 
    Gia_Obj_t * pObj = Gia_ManObj( p0, Abc_Lit2Var(iLit) );
    int i, n, Entry, Lit, OutLit = -1, pLits[2], nVarsQua, nAndsOld, nAndsNew; 
    if ( iLit < 2 ) return iLit;
    if ( Gia_ObjIsCi(pObj) ) return pFuncCiToKeep(pData, Gia_ObjCioId(pObj)) ? iLit : 1;
    assert( Gia_ObjIsAnd(pObj) );
    pNew = Gia_ManQuantDupConeSupp( p0, iLit, pFuncCiToKeep, pData, &vCis, &OutLit );
    if ( pNew->iSuppPi == 0 )
    {
        Gia_ManStop( pNew );
        Vec_IntFree( vCis );
        return iLit;
    }
    assert( pNew->iSuppPi > 0 && pNew->iSuppPi <= 64 * pNew->nSuppWords );
    vOuts = Vec_IntAlloc( 100 );
    vOuts2 = Vec_IntAlloc( 100 );
    assert( OutLit > 1 );
    Vec_IntPush( vOuts, OutLit );
    nVarsQua = pNew->iSuppPi;
    nAndsOld = Gia_ManAndNum(pNew);
    while ( --pNew->iSuppPi >= 0 )
    {
        Entry = Abc_Lit2Var( Vec_IntEntry(vOuts, 0) );
//        printf( "Quantifying input %d with %d affected nodes (out of %d):\n", 
//            pNew->iSuppPi, Gia_ManQuantCountUsed(pNew,Entry), Gia_ManAndNum(pNew) );
        if ( Vec_IntSize(&pNew->vCopiesTwo) < 2*Gia_ManObjNum(pNew) )
            Vec_IntFillExtra( &pNew->vCopiesTwo, 2*Gia_ManObjNum(pNew), -1 );
        assert( Vec_IntSize(vOuts) > 0 );
        Vec_IntClear( vOuts2 );
        Gia_ManIncrementTravId( pNew );
        Vec_IntForEachEntry( vOuts, Entry, i )
        {
            Gia_ManQuantExist_rec( pNew, Abc_Lit2Var(Entry), pLits );
            for ( n = 0; n < 2; n++ )
            {
                Lit = Abc_LitNotCond( pLits[n], Abc_LitIsCompl(Entry) );
                if ( Lit == 0 )
                    continue;
                if ( Lit == 1 )
                {
                    Vec_IntFree( vOuts );
                    Vec_IntFree( vOuts2 );
                    Gia_ManStop( pNew );
                    Vec_IntFree( vCis );
                    return 1;
                }
                Vec_IntPushUnique( vOuts2, Lit );
            }
        }
        Vec_IntClear( vOuts );
        ABC_SWAP( Vec_Int_t *, vOuts, vOuts2 );
    }
//    printf( "\n" );
    //printf( "The number of diff cofactors = %d.\n", Vec_IntSize(vOuts) );
    assert( Vec_IntSize(vOuts) > 0 );
    Vec_IntForEachEntry( vOuts, Entry, i )
        Vec_IntWriteEntry( vOuts, i, Abc_LitNot(Entry) );
    OutLit = Gia_ManHashAndMulti( pNew, vOuts );
    OutLit = Abc_LitNot( OutLit );
    Vec_IntFree( vOuts );
    Vec_IntFree( vOuts2 );
    // transfer back
    Gia_ManAppendCo( pNew, OutLit );
    nAndsNew = Gia_ManAndNum(p0);
    Lit = Gia_ManDupConeBack( p0, pNew, vCis );
    nAndsNew = Gia_ManAndNum(p0) - nAndsNew;
    Gia_ManStop( pNew );
    // report the result
//    printf( "Performed quantification with %6d nodes, %3d keep-vars, %3d quant-vars, resulting in %5d new nodes. \n", 
//        nAndsOld, Vec_IntSize(vCis) - nVarsQua, nVarsQua, nAndsNew );
//    Abc_PrintTime( 1, "Time", Abc_Clock() - clk );
    Vec_IntFree( vCis );
    return Lit;
}


/**Function*************************************************************

  Synopsis    [Existentially quantified several variables.]

  Description []
               
  SideEffects []

  SeeAlso     []

***********************************************************************/
void Gia_ManQuantCollect_rec( Gia_Man_t * p, int iObj, Vec_Int_t * vQuantCis, Vec_Int_t * vQuantSide, Vec_Int_t * vQuantAnds )
{
    Gia_Obj_t * pObj; 
    if ( Gia_ObjIsTravIdCurrentId( p, iObj ) )
        return;
    Gia_ObjSetTravIdCurrentId( p, iObj );
    if ( !Gia_ManQuantCheckOverlap(p, iObj) )
    {
        Vec_IntPush( vQuantSide, iObj );
        return;
    }
    pObj = Gia_ManObj( p, iObj );
    if ( Gia_ObjIsCi(pObj) )
    {
        Vec_IntPush( vQuantCis, iObj );
        return;
    }
    Gia_ManQuantCollect_rec( p, Gia_ObjFaninId0(pObj, iObj), vQuantCis, vQuantSide, vQuantAnds );
    Gia_ManQuantCollect_rec( p, Gia_ObjFaninId1(pObj, iObj), vQuantCis, vQuantSide, vQuantAnds );
    Vec_IntPush( vQuantAnds, iObj );
}
void Gia_ManQuantCollect( Gia_Man_t * p, int iObj, int(*pFuncCiToKeep)(void *, int), void * pData, Vec_Int_t * vQuantCis, Vec_Int_t * vQuantSide, Vec_Int_t * vQuantAnds )
{
    Gia_ManQuantMarkUsedCis( p, pFuncCiToKeep, pData );
    Gia_ManIncrementTravId( p );
    Gia_ManQuantCollect_rec( p, iObj, vQuantCis, vQuantSide, vQuantAnds );
//    printf( "\nCreated cone with %d quant-vars, %d side-inputs, and %d internal nodes.\n", 
//        Vec_IntSize(p->vQuantCis), Vec_IntSize(p->vQuantSide), Vec_IntSize(p->vQuantAnds) );
}

Gia_Man_t * Gia_ManQuantExist2Dup( Gia_Man_t * p, int iLit, Vec_Int_t * vCis, Vec_Int_t * vSide, Vec_Int_t * vAnds, int * pOutLit )
{
    int i, iObj, iLit0, iLit1, iLitR;
    Gia_Man_t * pNew = Gia_ManStart( Vec_IntSize(vSide) + Vec_IntSize(vCis) + 10*Vec_IntSize(vAnds) );
    Gia_ManQuantSetSuppStart( pNew );
    Gia_ManHashStart( pNew ); 
    if ( Vec_IntSize(&p->vCopies) < Gia_ManObjNum(p) )
        Vec_IntFillExtra( &p->vCopies, Gia_ManObjNum(p), -1 );
    Vec_IntForEachEntry( vSide, iObj, i )
    {
        Gia_ObjSetCopyArray( p, iObj, Gia_ManAppendCi(pNew) );
        Gia_ManQuantSetSuppZero( pNew );
    }
    Vec_IntForEachEntry( vCis,  iObj, i )
    {
        Gia_ObjSetCopyArray( p, iObj, (iLit0 = Gia_ManAppendCi(pNew)) );
        Gia_ManQuantSetSuppZero( pNew );
        Gia_ManQuantSetSuppCi( pNew, Gia_ManObj(pNew, Abc_Lit2Var(iLit0)) );
    }
    Vec_IntForEachEntry( vAnds, iObj, i )
    {
        Gia_Obj_t * pObj = Gia_ManObj( p, iObj );
        iLit0 = Gia_ObjCopyArray( p, Gia_ObjFaninId0(pObj, iObj) );
        iLit1 = Gia_ObjCopyArray( p, Gia_ObjFaninId1(pObj, iObj) );
        iLit0 = Abc_LitNotCond( iLit0, Gia_ObjFaninC0(pObj) );
        iLit1 = Abc_LitNotCond( iLit1, Gia_ObjFaninC1(pObj) );
        iLitR = Gia_ManHashAnd( pNew, iLit0, iLit1 );
        Gia_ObjSetCopyArray( p, iObj, iLitR );
    }
    iLit0 = Gia_ObjCopyArray( p, Abc_Lit2Var(iLit) );
    iLit0 = Abc_LitNotCond( iLit0, Abc_LitIsCompl(iLit) );
    if ( pOutLit ) *pOutLit = iLit0;
    Vec_IntForEachEntry( vSide, iObj, i )
        Gia_ObjSetCopyArray( p, iObj, -1 );
    Vec_IntForEachEntry( vCis,  iObj, i )
        Gia_ObjSetCopyArray( p, iObj, -1 );
    Vec_IntForEachEntry( vAnds, iObj, i )
        Gia_ObjSetCopyArray( p, iObj, -1 );
    return pNew;
}
int Gia_ManQuantExistInt( Gia_Man_t * p0, int iLit, Vec_Int_t * vCis, Vec_Int_t * vSide, Vec_Int_t * vAnds )
{
    int i, Lit, iOutLit, nAndsNew, pLits[2], pRes[2] = {0};
    Gia_Man_t * pNew;
    if ( iLit < 2 )
        return 0;
    if ( Vec_IntSize(vCis) == 0 )
        return iLit;
    if ( Vec_IntSize(vAnds) == 0 )
    {
        assert( Gia_ObjIsCi( Gia_ManObj(p0, Abc_Lit2Var(iLit)) ) );
        return Vec_IntFind(vCis, Abc_Lit2Var(iLit)) == -1 ? iLit : 1;
    }
    pNew = Gia_ManQuantExist2Dup( p0, iLit, vCis, vSide, vAnds, &iOutLit );
    if ( Vec_IntSize(&pNew->vCopiesTwo) < 2*Gia_ManObjNum(pNew) )
        Vec_IntFillExtra( &pNew->vCopiesTwo, 2*Gia_ManObjNum(pNew), -1 );
    Gia_ObjCopySetTwoArray( pNew, 0, pRes );
    for ( i = 0; i < Gia_ManCiNum(pNew); i++ )
    {
        pRes[0] = pRes[1] = Abc_Var2Lit( i+1, 0 );
        Gia_ObjCopySetTwoArray( pNew, i+1, pRes );
    }
    assert( pNew->iSuppPi == Gia_ManCiNum(pNew) - Vec_IntSize(vSide) );
    for ( i = Gia_ManCiNum(pNew) - 1; i >= Vec_IntSize(vSide); i-- )
    {
        pRes[0] = 0; pRes[1] = 1;
        Gia_ObjCopySetTwoArray( pNew, i+1, pRes );

        pNew->iSuppPi--;
        if ( Vec_IntSize(&pNew->vCopiesTwo) < 2*Gia_ManObjNum(pNew) )
            Vec_IntFillExtra( &pNew->vCopiesTwo, 2*Gia_ManObjNum(pNew), -1 );
        Gia_ManIncrementTravId( pNew );
        Gia_ManQuantExist_rec( pNew, Abc_Lit2Var(iOutLit), pLits );
        pLits[0] = Abc_LitNotCond( pLits[0], Abc_LitIsCompl(iOutLit) );
        pLits[1] = Abc_LitNotCond( pLits[1], Abc_LitIsCompl(iOutLit) );
        iOutLit = Gia_ManHashOr( pNew, pLits[0], pLits[1] );

        pRes[0] = pRes[1] = Abc_Var2Lit( i+1, 0 );
        Gia_ObjCopySetTwoArray( pNew, i+1, pRes );
    }
    assert( pNew->iSuppPi == 0 );
    Vec_IntAppend( vSide, vCis );
    // transfer back
    Gia_ManAppendCo( pNew, iOutLit );
    nAndsNew = Gia_ManAndNum(p0);
    Lit = Gia_ManDupConeBackObjs( p0, pNew, vSide );
    nAndsNew = Gia_ManAndNum(p0) - nAndsNew;
    Vec_IntShrink( vSide, Vec_IntSize(vSide) - Vec_IntSize(vCis) );
//    printf( "Performed quantification with %6d -> %6d nodes, %3d side-vars, %3d quant-vars, resulting in %5d new nodes. \n", 
//        Vec_IntSize(vAnds), Gia_ManAndNum(pNew), Vec_IntSize(vSide), Vec_IntSize(vCis), nAndsNew );
    Gia_ManStop( pNew );
    return Lit;
}
int Gia_ManQuantExist( Gia_Man_t * p0, int iLit, int(*pFuncCiToKeep)(void *, int), void * pData )
{
    int Res;
    Vec_Int_t * vQuantCis  = Vec_IntAlloc( 100 );
    Vec_Int_t * vQuantSide = Vec_IntAlloc( 100 );
    Vec_Int_t * vQuantAnds = Vec_IntAlloc( 100 );
    Gia_ManQuantCollect( p0, Abc_Lit2Var(iLit), pFuncCiToKeep, pData, vQuantCis, vQuantSide, vQuantAnds );
    Res = Gia_ManQuantExistInt( p0, iLit, vQuantCis, vQuantSide, vQuantAnds );
    Vec_IntFree( vQuantCis );
    Vec_IntFree( vQuantSide );
    Vec_IntFree( vQuantAnds );
    return Res;
}


////////////////////////////////////////////////////////////////////////
///                       END OF FILE                                ///
////////////////////////////////////////////////////////////////////////


ABC_NAMESPACE_IMPL_END