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Commit 46075098 by Alan Mishchenko
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Improved timeout in &reachm.

parent 7977b2dd
Showing with 73 additions and 12 deletions
src/aig/llb/llb1Reach.c
......@@ -90,7 +90,7 @@ DdNode * Llb_ManConstructGroupBdd( Llb_Man_t * p, Llb_Grp_t * pGroup )
{
Aig_Obj_t * pObj;
DdNode * bBdd0, * bBdd1, * bRes, * bXor, * bTemp;
int i;
int i, k;
Aig_ManConst1(p->pAig)->pData = Cudd_ReadOne( p->dd );
Vec_PtrForEachEntry( Aig_Obj_t *, pGroup->vIns, pObj, i )
pObj->pData = Cudd_bddIthVar( p->dd, Vec_IntEntry(p->vObj2Var, Aig_ObjId(pObj)) );
......@@ -98,7 +98,15 @@ DdNode * Llb_ManConstructGroupBdd( Llb_Man_t * p, Llb_Grp_t * pGroup )
{
bBdd0 = Cudd_NotCond( Aig_ObjFanin0(pObj)->pData, Aig_ObjFaninC0(pObj) );
bBdd1 = Cudd_NotCond( Aig_ObjFanin1(pObj)->pData, Aig_ObjFaninC1(pObj) );
pObj->pData = Cudd_bddAnd( p->dd, bBdd0, bBdd1 ); Cudd_Ref( (DdNode *)pObj->pData );
pObj->pData = Extra_bddAndTime( p->dd, bBdd0, bBdd1, p->pPars->TimeTarget );
if ( pObj->pData == NULL )
{
Vec_PtrForEachEntryStop( Aig_Obj_t *, pGroup->vNodes, pObj, k, i )
if ( pObj->pData )
Cudd_RecursiveDeref( p->dd, (DdNode *)pObj->pData );
return NULL;
}
Cudd_Ref( (DdNode *)pObj->pData );
}
bRes = Cudd_ReadOne( p->dd ); Cudd_Ref( bRes );
Vec_PtrForEachEntry( Aig_Obj_t *, pGroup->vOuts, pObj, i )
......@@ -109,7 +117,17 @@ DdNode * Llb_ManConstructGroupBdd( Llb_Man_t * p, Llb_Grp_t * pGroup )
bBdd0 = (DdNode *)pObj->pData;
bBdd1 = Cudd_bddIthVar( p->dd, Vec_IntEntry(p->vObj2Var, Aig_ObjId(pObj)) );
bXor = Cudd_bddXor( p->dd, bBdd0, bBdd1 ); Cudd_Ref( bXor );
bRes = Cudd_bddAnd( p->dd, bTemp = bRes, Cudd_Not(bXor) ); Cudd_Ref( bRes );
bRes = Extra_bddAndTime( p->dd, bTemp = bRes, Cudd_Not(bXor), p->pPars->TimeTarget );
if ( bRes == NULL )
{
Cudd_RecursiveDeref( p->dd, bTemp );
Cudd_RecursiveDeref( p->dd, bXor );
Vec_PtrForEachEntryStop( Aig_Obj_t *, pGroup->vNodes, pObj, k, i )
if ( pObj->pData )
Cudd_RecursiveDeref( p->dd, (DdNode *)pObj->pData );
return NULL;
}
Cudd_Ref( bRes );
Cudd_RecursiveDeref( p->dd, bTemp );
Cudd_RecursiveDeref( p->dd, bXor );
}
......@@ -253,7 +271,13 @@ DdNode * Llb_ManComputeImage( Llb_Man_t * p, DdNode * bInit )
{
// compute group BDD
pGroup = p->pMatrix->pColGrps[i];
bGroup = Llb_ManConstructGroupBdd( p, pGroup ); Cudd_Ref( bGroup );
bGroup = Llb_ManConstructGroupBdd( p, pGroup );
if ( bGroup == NULL )
{
Cudd_RecursiveDeref( p->dd, bImage );
return NULL;
}
Cudd_Ref( bGroup );
// quantify variables appearing only in this group
bCube = Llb_ManConstructQuantCubeIntern( p, pGroup, i ); Cudd_Ref( bCube );
bGroup = Cudd_bddExistAbstract( p->dd, bTemp = bGroup, bCube ); Cudd_Ref( bGroup );
......@@ -261,16 +285,18 @@ DdNode * Llb_ManComputeImage( Llb_Man_t * p, DdNode * bInit )
Cudd_RecursiveDeref( p->dd, bCube );
// perform partial product
bCube = Llb_ManConstructQuantCube( p, pGroup, i ); Cudd_Ref( bCube );
bImage = Cudd_bddAndAbstract( p->dd, bTemp = bImage, bGroup, bCube ); Cudd_Ref( bImage );
bImage = Extra_bddAndAbstractTime( p->dd, bTemp = bImage, bGroup, bCube, p->pPars->TimeTarget );
if ( bImage == NULL )
{
Cudd_RecursiveDeref( p->dd, bTemp );
Cudd_RecursiveDeref( p->dd, bGroup );
Cudd_RecursiveDeref( p->dd, bCube );
// chech runtime
if ( p->pPars->TimeTarget && clock() >= p->pPars->TimeTarget )
{
Cudd_RecursiveDeref( p->dd, bImage );
return NULL;
}
Cudd_Ref( bImage );
Cudd_RecursiveDeref( p->dd, bTemp );
Cudd_RecursiveDeref( p->dd, bGroup );
Cudd_RecursiveDeref( p->dd, bCube );
}
// make sure image depends on next state vars
......@@ -410,6 +436,10 @@ int Llb_ManReachability( Llb_Man_t * p, Vec_Int_t * vHints, DdManager ** pddGlo
Cudd_AutodynDisable( p->ddG );
}
// set the stop time parameter
p->dd->TimeStop = p->pPars->TimeTarget;
p->ddG->TimeStop = p->pPars->TimeTarget;
// derive constraints
bConstrCs = Llb_ManCreateConstraints( p, vHints, 0 ); Cudd_Ref( bConstrCs );
bConstrNs = Llb_ManCreateConstraints( p, vHints, 1 ); Cudd_Ref( bConstrNs );
......@@ -506,7 +536,7 @@ int Llb_ManReachability( Llb_Man_t * p, Vec_Int_t * vHints, DdManager ** pddGlo
if ( bNext == NULL )
{
if ( !p->pPars->fSilent )
printf( "Reached timeout during image computation (%d seconds).\n", p->pPars->TimeLimit );
printf( "Reached timeout (%d seconds) during image computation.\n", p->pPars->TimeLimit );
p->pPars->iFrame = nIters - 1;
Cudd_RecursiveDeref( p->dd, bCurrent ); bCurrent = NULL;
Cudd_RecursiveDeref( p->dd, bConstrCs ); bConstrCs = NULL;
......@@ -526,9 +556,24 @@ int Llb_ManReachability( Llb_Man_t * p, Vec_Int_t * vHints, DdManager ** pddGlo
//Extra_bddPrintSupport( p->dd, bNext ); printf( "\n" );
// remap these states into the current state vars
bNext = Extra_TransferPermute( p->dd, p->ddG, bTemp = bNext, pNs2Glo ); Cudd_Ref( bNext );
// bNext = Extra_TransferPermute( p->dd, p->ddG, bTemp = bNext, pNs2Glo ); Cudd_Ref( bNext );
// Cudd_RecursiveDeref( p->dd, bTemp );
bNext = Extra_TransferPermuteTime( p->dd, p->ddG, bTemp = bNext, pNs2Glo, p->pPars->TimeTarget );
if ( bNext == NULL )
{
if ( !p->pPars->fSilent )
printf( "Reached timeout (%d seconds) during image computation in transfer 1.\n", p->pPars->TimeLimit );
p->pPars->iFrame = nIters - 1;
Cudd_RecursiveDeref( p->dd, bTemp );
Cudd_RecursiveDeref( p->dd, bConstrCs ); bConstrCs = NULL;
Cudd_RecursiveDeref( p->dd, bConstrNs ); bConstrNs = NULL;
Cudd_RecursiveDeref( p->ddG, bReached ); bReached = NULL;
return -1;
}
Cudd_Ref( bNext );
Cudd_RecursiveDeref( p->dd, bTemp );
// check if there are any new states
if ( Cudd_bddLeq( p->ddG, bNext, bReached ) ) // implication = no new states
{
......@@ -551,9 +596,25 @@ int Llb_ManReachability( Llb_Man_t * p, Vec_Int_t * vHints, DdManager ** pddGlo
// bCurrent = Cudd_bddRestrict( p->ddG, bTemp = bCurrent, Cudd_Not(bReached) ); Cudd_Ref( bCurrent );
// Cudd_RecursiveDeref( p->ddG, bTemp );
//printf( "Initial BDD =%7d. Constrained BDD =%7d.\n", Cudd_DagSize(bTemp), Cudd_DagSize(bCurrent) );
// remap these states into the current state vars
bCurrent = Extra_TransferPermute( p->ddG, p->dd, bTemp = bCurrent, pGlo2Cs ); Cudd_Ref( bCurrent );
// bCurrent = Extra_TransferPermute( p->ddG, p->dd, bTemp = bCurrent, pGlo2Cs ); Cudd_Ref( bCurrent );
// Cudd_RecursiveDeref( p->ddG, bTemp );
bCurrent = Extra_TransferPermuteTime( p->ddG, p->dd, bTemp = bCurrent, pGlo2Cs, p->pPars->TimeTarget );
if ( bCurrent == NULL )
{
if ( !p->pPars->fSilent )
printf( "Reached timeout (%d seconds) during image computation in transfer 2.\n", p->pPars->TimeLimit );
p->pPars->iFrame = nIters - 1;
Cudd_RecursiveDeref( p->ddG, bTemp );
Cudd_RecursiveDeref( p->dd, bConstrCs ); bConstrCs = NULL;
Cudd_RecursiveDeref( p->dd, bConstrNs ); bConstrNs = NULL;
Cudd_RecursiveDeref( p->ddG, bReached ); bReached = NULL;
return -1;
}
Cudd_Ref( bCurrent );
Cudd_RecursiveDeref( p->ddG, bTemp );
// add to the reached states
bReached = Cudd_bddOr( p->ddG, bTemp = bReached, bNext ); Cudd_Ref( bReached );
......
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