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Bug fix in &cec (handling the case when the miter is disproved by the all-0 pattern).

This commit is contained in:
Alan Mishchenko 2020-06-24 10:20:28 -07:00
parent 58e3a5caff
commit 322cea8234
1 changed files with 23 additions and 5 deletions
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28
src/base/abci/abc.c
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@ -36950,13 +36950,31 @@ int Abc_CommandAbc9Cec( Abc_Frame_t * pAbc, int argc, char ** argv )
}
else
{
Gia_Man_t * pTemp;
abctime clk = Abc_Clock();
Gia_Obj_t * pObj; int i;
if ( !pPars->fSilent )
Abc_Print( 1, "Assuming the current network is a single-output miter.\n" );
pTemp = Gia_ManDemiterToDual( pAbc->pGia );
pAbc->Status = Cec_ManVerify( pTemp, pPars );
ABC_SWAP( Abc_Cex_t *, pAbc->pGia->pCexComb, pTemp->pCexComb );
Gia_ManStop( pTemp );
// handle the case when the output is disproved by an all-0 primary input pattern
ABC_FREE( pAbc->pGia->pCexComb );
Gia_ManSetPhase( pAbc->pGia );
Gia_ManForEachCo( pAbc->pGia, pObj, i )
if ( pObj->fPhase )
{
pAbc->pGia->pCexComb = Abc_CexAlloc( 0, Gia_ManCiNum(pAbc->pGia), 1 );
if ( !pPars->fSilent )
{
Abc_Print( 1, "Networks are NOT EQUIVALENT. Output %d trivially differs (different phase). ", i );
Abc_PrintTime( 1, "Time", Abc_Clock() - clk );
}
break;
}
if ( pAbc->pGia->pCexComb == NULL )
{
Gia_Man_t * pTemp = Gia_ManDemiterToDual( pAbc->pGia );
pAbc->Status = Cec_ManVerify( pTemp, pPars );
ABC_SWAP( Abc_Cex_t *, pAbc->pGia->pCexComb, pTemp->pCexComb );
Gia_ManStop( pTemp );
}
}
Abc_FrameReplaceCex( pAbc, &pAbc->pGia->pCexComb );
return 0;