/**
* Convert an LTL formula to a DRA.
* @param ltl the LTL formula
* @param options which operators are allowed
* @return a shared_ptr to the DRA
*/
private DRA ltl2dra(LTLFormula ltl, BuchiAutomata buchiAutomata, LTL2DSTAR_Options options)
{
APSet ap_set = ltl.getAPSet();
LTLFormula ltl_pnf = ltl.toPNF();
if (options.allow_union && ltl_pnf.getRootNode().getType() == type_t.T_OR)
{
LTLFormula ltl_left = ltl_pnf.getSubFormula(ltl_pnf.getRootNode().getLeft());
LTLFormula ltl_right = ltl_pnf.getSubFormula(ltl_pnf.getRootNode().getRight());
LTL2DSTAR_Options rec_opt = options;
rec_opt.recursion();
DRA dra_left = ltl2dra(ltl_left, buchiAutomata, rec_opt);
DRA dra_right = ltl2dra(ltl_right, buchiAutomata, rec_opt);
return(DRA.calculateUnion(dra_left, dra_right, _safra_opt.union_trueloop) as DRA);
}
if (options.safety)
{
LTLSafetyAutomata lsa = new LTLSafetyAutomata();
DRA safety_dra = lsa.ltl2dra(ltl, buchiAutomata);
if (safety_dra != null)
{
return(safety_dra);
}
}
DRA dra = new DRA(ap_set);
NBA nba = LTL2NBA.ltl2nba(ltl_pnf, buchiAutomata);
if (nba == null)
{
throw new Exception("Couldn't create NBA from LTL formula");
}
NBA2DRA nba2dra = new NBA2DRA(_safra_opt);
nba2dra.convert(nba, dra);
if (options.optimizeAcceptance)
{
dra.optimizeAcceptanceCondition();
}
if (options.bisim)
{
DRAOptimizations dra_optimizer = new DRAOptimizations();
dra = dra_optimizer.optimizeBisimulation(dra);
}
return(dra);
}
/**
* Convert the NBA to a DRA using Safra's algorithm, using stuttering
* @param nba the NBA
* @param dra_result the result DRA
* @param limit limit for the size of the DRA
*/
//template < typename NBA_t, typename DRA_t >
void convert_safra_stuttered(NBA nba, DRA dra_result, int limit) //=0
{
SafraAlgorithm safras_algo = new SafraAlgorithm(nba, _options);
StutteredNBA2DA nba2dra_stuttered = new StutteredNBA2DA(_detailed_states, _stutter_information);
nba2dra_stuttered.convert(safras_algo, dra_result, limit);
}
/**
* Perform quotienting using bisimulation
* @param dra the DRA to be optimized
* @param printColoring print colorings on std::cerr?
* @param detailedStates save detailed information on the interals in the state?
* @param printStats print statistics on std::cerr?
* @return shared_ptr to the quotiented DRA
*/
public DRA optimizeBisimulation(DRA dra)
{
bool printColoring = false;
bool detailedStates = false;
bool printStats = false;
//if (!dra.isCompact()) {dra.makeCompact();}
List <int> states = new List <int>(dra.size());
for (int i = 0; i < dra.size(); i++)
{
//states[i] = i;
states.Add(i);
}
AcceptanceSignatureContainer accsig_container = new AcceptanceSignatureContainer(dra);
AcceptanceSignatureComparator accsig_comp = new AcceptanceSignatureComparator(accsig_container);
Coloring coloring = new Coloring(dra, detailedStates);
// generate initial coloring by running with the
// different acceptance signature
Coloring new_coloring = generateColoring(states, coloring, accsig_comp);
//delete coloring;
coloring = new_coloring;
int old_size = dra.size();
int initial_partition = coloring.countColors();
int oldColors;
do
{
oldColors = coloring.countColors();
ColoredStateComparator cnc = new ColoredStateComparator(coloring, dra);
Coloring new_coloring_temp = generateColoring(states, coloring, cnc);
//delete coloring;
coloring = new_coloring_temp;
} while (oldColors != coloring.countColors());
//if (printColoring) {
// std::cerr << *coloring << std::endl;
//}
DRA dra_new = generateDRAfromColoring(dra, coloring, detailedStates);
//delete coloring;
int new_size = dra_new.size();
//if (printStats) {
// std::cerr << "Bisimulation: From (" << old_size << ") To (" << new_size << ") Initial: (" << initial_partition << ")" << std::endl;
//}
return(dra_new);
}
public static DRA dba2dra(NBA nba, bool complement)
{
APSet ap_set = nba.getAPSet();;
DRA dra_p = new DRA(ap_set);
dba2dra(nba, dra_p, complement);
return(dra_p);
}
public static DA calculateUnion(DRA dra1, DRA dra2, bool trueloop_check, bool detailed_states)
{
if (dra1.isStreett() || dra2.isStreett())
{
throw new Exception("Can not calculate union for Streett automata");
}
return(DAUnionAlgorithm.calculateUnion(dra1, dra2, trueloop_check, detailed_states));
}
public static DA calculateUnion(DRA dra1, DRA dra2, bool trueloop_check, bool detailed_states)
{
if (dra1.isStreett() || dra2.isStreett())
{
throw new Exception("Can not calculate union for Streett automata");
}
return DAUnionAlgorithm.calculateUnion(dra1, dra2, trueloop_check, detailed_states);
}
public static DRA dba2dra(NBA nba, bool complement)
{
APSet ap_set = nba.getAPSet(); ;
DRA dra_p = new DRA(ap_set);
dba2dra(nba, dra_p, complement);
return dra_p;
}
/**
* Perform quotienting using bisimulation
* @param dra the DRA to be optimized
* @param printColoring print colorings on std::cerr?
* @param detailedStates save detailed information on the interals in the state?
* @param printStats print statistics on std::cerr?
* @return shared_ptr to the quotiented DRA
*/
public DRA optimizeBisimulation(DRA dra)
{
bool printColoring = false;
bool detailedStates = false;
bool printStats = false;
//if (!dra.isCompact()) {dra.makeCompact();}
List<int> states = new List<int>(dra.size());
for (int i = 0; i < dra.size(); i++)
{
//states[i] = i;
states.Add(i);
}
AcceptanceSignatureContainer accsig_container = new AcceptanceSignatureContainer(dra);
AcceptanceSignatureComparator accsig_comp = new AcceptanceSignatureComparator(accsig_container);
Coloring coloring = new Coloring(dra, detailedStates);
// generate initial coloring by running with the
// different acceptance signature
Coloring new_coloring = generateColoring(states, coloring, accsig_comp);
//delete coloring;
coloring = new_coloring;
int old_size = dra.size();
int initial_partition = coloring.countColors();
int oldColors;
do
{
oldColors = coloring.countColors();
ColoredStateComparator cnc = new ColoredStateComparator(coloring, dra);
Coloring new_coloring_temp = generateColoring(states, coloring, cnc);
//delete coloring;
coloring = new_coloring_temp;
} while (oldColors != coloring.countColors());
//if (printColoring) {
// std::cerr << *coloring << std::endl;
//}
DRA dra_new = generateDRAfromColoring(dra, coloring, detailedStates);
//delete coloring;
int new_size = dra_new.size();
//if (printStats) {
// std::cerr << "Bisimulation: From (" << old_size << ") To (" << new_size << ") Initial: (" << initial_partition << ")" << std::endl;
//}
return dra_new;
}
//bool trueloop_check=true, bool detailed_states=false
public static DA calculateUnionStuttered(DRA dra1, DRA dra2, StutterSensitivenessInformation stutter_information, bool trueloop_check, bool detailed_states)
{
if (dra1.isStreett() ||
dra2.isStreett())
{
throw new Exception("Can not calculate union for Streett automata");
}
return DAUnionAlgorithm.calculateUnionStuttered(dra1, dra2, stutter_information, trueloop_check, detailed_states);
}
//bool trueloop_check=true, bool detailed_states=false
public static DA calculateUnionStuttered(DRA dra1, DRA dra2, StutterSensitivenessInformation stutter_information, bool trueloop_check, bool detailed_states)
{
if (dra1.isStreett() ||
dra2.isStreett())
{
throw new Exception("Can not calculate union for Streett automata");
}
return(DAUnionAlgorithm.calculateUnionStuttered(dra1, dra2, stutter_information, trueloop_check, detailed_states));
}
/** Constructor.
* @param algo The Algorithm_t to use
* @param da_result The result automaton
* @param limit Limit the number of states in the result automaton?
* @param detailed_states Generate detailed descriptions?
* @param stutter_information Information about which symbols may be stuttered
*/
public StutteredConvertorUnion(DAUnionAlgorithm algo, DRA da_result, int limit, bool detailed_states, StutterSensitivenessInformation stutter_information)
{
_da_result = da_result;
_limit = limit;
_algo = algo;
_detailed_states = detailed_states;
_stutter_information = stutter_information;
//added by ly
_state_mapper = new StateMapper <TreeWithAcceptance, DA_State>();
_unprocessed = new Stack <KeyValuePair <TreeWithAcceptance, DA_State> >();
}
/** Constructor.
* @param algo The Algorithm_t to use
* @param da_result The result automaton
* @param limit Limit the number of states in the result automaton?
* @param detailed_states Generate detailed descriptions?
* @param stutter_information Information about which symbols may be stuttered
*/
public StutteredConvertorUnion(DAUnionAlgorithm algo, DRA da_result, int limit, bool detailed_states, StutterSensitivenessInformation stutter_information)
{
_da_result = da_result;
_limit = limit;
_algo = algo;
_detailed_states = detailed_states;
_stutter_information = stutter_information;
//added by ly
_state_mapper = new StateMapper<TreeWithAcceptance, DA_State>();
_unprocessed = new Stack<KeyValuePair<TreeWithAcceptance, DA_State>>();
}
/**
* Perform union construction
*/
public override void calculate(int level, int limit)
{
// if (_options.verbose_scheduler) {
//std::cerr << "Calculate ("<< level <<"): " << typeid(*this).name() << std::endl;
// }
try
{
children[0].calculate(level + 1, limit);
children[1].calculate(level + 1, limit);
}
catch (LimitReachedException e)
{
//_automaton.reset();
return;
}
if (children[0]._automaton == null || children[1]._automaton == null)
{
return;
}
bool union_trueloop = _sched.getLTL2DRA().getOptions().union_trueloop;
if (_sched.getLTL2DRA().getOptions().stutter)
{
_automaton = DRA.calculateUnionStuttered(children[0]._automaton, children[1]._automaton, _stutter_information, union_trueloop, _options.detailed_states) as DRA;
}
else
{
_automaton = DRA.calculateUnion(children[0]._automaton, children[1]._automaton, union_trueloop, _options.detailed_states) as DRA;
/* _automaton=DRAOperations::dra_union(*children[0]->_automaton,
* children[1]->_automaton,
* union_trueloop,
* _options.detailed_states); */
}
_comment = "Union{" + children[0]._comment + "," + children[1]._comment + "}";
if (_options.optimizeAcceptance)
{
_automaton.optimizeAcceptanceCondition();
}
if (_options.bisim)
{
DRAOptimizations dra_optimizer = new DRAOptimizations();
_automaton = dra_optimizer.optimizeBisimulation(_automaton); //, false, _options.detailed_states, false
}
hook_after_calculate();
}
public void convert(NBA nba, DRA dra_result, int limit) //=0
{
if (nba.size() == 0 || nba.getStartState() == null)
{
// the NBA is empty -> construct DRA that is empty
dra_result.constructEmpty();
return;
}
if (_options.dba_check && nba.isDeterministic())
{
DBA2DRA.dba2dra(nba, dra_result);
return;
}
if (_options.stutter_closure)
{
if (_stutter_information != null && !_stutter_information.isCompletelyInsensitive())
{
//std::cerr <<
//"WARNING: NBA might not be 100% stutter insensitive, applying stutter closure can create invalid results!" <<
//std::endl;
}
NBA nba_closed = NBAStutterClosure.stutter_closure(nba);
if (can_stutter())
{
convert_safra_stuttered(nba_closed, dra_result, limit);
return;
}
convert_safra(nba_closed, dra_result, limit);
return;
}
if (can_stutter())
{
convert_safra_stuttered(nba, dra_result, limit);
return;
}
convert_safra(nba, dra_result, limit);
return;
}
/**
* Constructor, get initial size of the coloring from DRA.
* @param dra the DRA
* @param detailed Keep detailed information on the equivalence classes?
*/
public Coloring(DRA dra, bool detailed) //=false
{
_nr_of_colors = 0;
_detailed = detailed;
_coloring = new List <int>();
Ultility.resize(_coloring, dra.size());
_color2state = new List <int>();
//_coloring.resize(dra.size());
if (_detailed)
{
_color2states = new List <BitSet>();
}
else
{
_color2states = null;
}
}
/**
* Convert an NBA to a DRA using Safra's algorithm.
* If limit is specified (>0), the conversion is
* aborted with LimitReachedException when the number of
* states exceeds the limit.
* @param nba the formula
* @param limit a limit on the number of states (0 for no limit)
* @param detailedStates save detailed interal information (Safra trees)
* in the generated states
* @param stutter_information Information about the symbols that can be stuttered
* @return a shared_ptr to the created DRA
*/
public DRA nba2dra(NBA nba, int limit, bool detailedStates, StutterSensitivenessInformation stutter_information)
{
DRA dra = new DRA(nba.getAPSet_cp());
NBA2DRA nba2dra = new NBA2DRA(_safra_opt, detailedStates, stutter_information);
try
{
nba2dra.convert(nba, dra, limit);
}
catch (LimitReachedException e)
{
//dra.reset();
// rethrow to notify caller
//throw;
}
return(dra);
}
/**
* Convert an NBA to a DRA using Safra's algorithm.
* If limit is specified (>0), the conversion is
* aborted with LimitReachedException when the number of
* states exceeds the limit.
* @param nba the formula
* @param limit a limit on the number of states (0 for no limit)
* @param detailedStates save detailed interal information (Safra trees)
* in the generated states
* @param stutter_information Information about the symbols that can be stuttered
* @return a shared_ptr to the created DRA
*/
public DRA nba2dra(NBA nba, int limit, bool detailedStates, StutterSensitivenessInformation stutter_information)
{
DRA dra = new DRA(nba.getAPSet_cp());
NBA2DRA nba2dra = new NBA2DRA(_safra_opt, detailedStates, stutter_information);
try
{
nba2dra.convert(nba, dra, limit);
}
catch (LimitReachedException e)
{
//dra.reset();
// rethrow to notify caller
//throw;
}
return dra;
}
/**
* Convert the NBA to a DRA using Safra's algorithm
* @param nba the NBA
* @param dra_result the result DRA
* @param limit limit for the size of the DRA
*/
public void convert_safra(NBA nba, DRA dra_result, int limit) //=0
{
SafraAlgorithm safras_algo = new SafraAlgorithm(nba, _options);
if (!_options.opt_rename)
{
NBA2DA nba2da = new NBA2DA(_detailed_states);
nba2da.convert(safras_algo, dra_result, limit);
}
else
{
//typedef typename SafrasAlgorithm<NBA_t>::result_t result_t;
//typedef typename SafrasAlgorithm<NBA_t>::state_t key_t;
//<safra_t,DRA_t, StateMapperFuzzy<result_t, key_t, typename DRA_t::state_type, SafraTreeCandidateMatcher> >
NBA2DA nba2da_fuzzy = new NBA2DA(_detailed_states);
nba2da_fuzzy.convert(safras_algo, dra_result, limit);
}
}
/** Calculate the automaton for this building block, by default
* calculate the automata for the children and then choose the smallest. */
public virtual void calculate(int level, int limit)
{
//if (_options.verbose_scheduler) {
// std::cerr << "Calculate ("<< level <<"): " << typeid(*this).name() << std::endl;
//}
calculateChildren(level, limit);
bool first = true;
//for (child_vector::iterator it=children.begin();it!=children.end();++it)
for (int i = 0; i < children.Count; i++)
{
LTL2DSTAR_Tree it = children[i];
if (it._automaton == null)
{
continue;
}
if (first)
{
_automaton = it._automaton;
_comment = it._comment;
}
else
{
if (_automaton.size() > it._automaton.size())
{
_automaton = it._automaton;
_comment = it._comment;
}
}
first = false;
}
hook_after_calculate();
}
/** Type of an acceptance signature */
// public KeyValuePair<BitSet, BitSet> acceptance_signature_t;
/**
* Constructor, fills the container with the acceptance signatures of the states.
* @param dra the DRA
*/
public AcceptanceSignatureContainer(DRA dra)
{
//_acceptancesig_vector.resize(dra.size());
_acceptancesig_vector = new List <KeyValuePair <BitSet, BitSet> >();
//Ultility.resize(_acceptancesig_vector, dra.size());
_bitsets = new List <BitSet>();
for (int i = 0; i < dra.size(); i++)
{
BitSet b = dra.acceptance().getAcceptance_L_forState(i);
BitSet bp = new BitSet(b);
_bitsets.Add(bp); //push_back
// _acceptancesig_vector[i].Key = bp;
b = dra.acceptance().getAcceptance_U_forState(i);
BitSet bp1 = new BitSet(b);
_bitsets.Add(bp1); //
//_acceptancesig_vector[i].Value = bp1;
_acceptancesig_vector.Add(new KeyValuePair <BitSet, BitSet>(bp, bp1));
}
}
/**
* Generate a DRA/DSA for the LTL formula
*/
public DRA calculate(LTLFormula ltl, BuchiAutomata ba, LTL2DSTAR_Options ltl_opt)
{
LTLFormula ltl_p = (ltl.toPNF());
//if (ltl_opt.verbose_scheduler) {
// std::cerr << ltl_p->toStringInfix() << std::endl;
//}
LTL2DSTAR_Tree_Start root = new LTL2DSTAR_Tree_Start(ltl_p, ba, ltl_opt, this);
//if (ltl_opt.verbose_scheduler) {
// root.printTree(std::cerr);
//}
root.calculate();
DRA result = root._automaton;
if (result != null)
{
result.setComment(root._comment); //+ getTimingInformation()
}
return(result);
}
//=0
public void convert(NBA nba, DRA dra_result, int limit)
{
if (nba.size() == 0 || nba.getStartState() == null)
{
// the NBA is empty -> construct DRA that is empty
dra_result.constructEmpty();
return;
}
if (_options.dba_check && nba.isDeterministic())
{
DBA2DRA.dba2dra(nba, dra_result);
return;
}
if (_options.stutter_closure)
{
if (_stutter_information != null && !_stutter_information.isCompletelyInsensitive())
{
//std::cerr <<
//"WARNING: NBA might not be 100% stutter insensitive, applying stutter closure can create invalid results!" <<
//std::endl;
}
NBA nba_closed = NBAStutterClosure.stutter_closure(nba);
if (can_stutter())
{
convert_safra_stuttered(nba_closed, dra_result, limit);
return;
}
convert_safra(nba_closed, dra_result, limit);
return;
}
if (can_stutter())
{
convert_safra_stuttered(nba, dra_result, limit);
return;
}
convert_safra(nba, dra_result, limit);
return;
}
//=0
/**
* Convert an NBA to an DRA (having APElements as edge labels).
* Throws LimitReachedException if a limit is set (>0) and
* there are more states in the generated DRA than the limit.
* @param nba the NBA
* @param dra_result the DRA where the result is stored
* (has to have same APSet as the nba)
* @param limit a limit for the number of states (0 disables the limit).
*/
//template < typename NBA_t, typename DRA_t>
public void convert(NBA nba, DRA dra_result)
{
convert(nba, dra_result, 0);
}
//=0
/**
* Convert the NBA to a DRA using Safra's algorithm, using stuttering
* @param nba the NBA
* @param dra_result the result DRA
* @param limit limit for the size of the DRA
*/
//template < typename NBA_t, typename DRA_t >
void convert_safra_stuttered(NBA nba, DRA dra_result, int limit)
{
SafraAlgorithm safras_algo = new SafraAlgorithm(nba, _options);
StutteredNBA2DA nba2dra_stuttered = new StutteredNBA2DA(_detailed_states, _stutter_information);
nba2dra_stuttered.convert(safras_algo, dra_result, limit);
}
//=0
/**
* Convert the NBA to a DRA using Safra's algorithm
* @param nba the NBA
* @param dra_result the result DRA
* @param limit limit for the size of the DRA
*/
public void convert_safra(NBA nba, DRA dra_result, int limit)
{
SafraAlgorithm safras_algo = new SafraAlgorithm(nba, _options);
if (!_options.opt_rename)
{
NBA2DA nba2da = new NBA2DA(_detailed_states);
nba2da.convert(safras_algo, dra_result, limit);
}
else
{
//typedef typename SafrasAlgorithm<NBA_t>::result_t result_t;
//typedef typename SafrasAlgorithm<NBA_t>::state_t key_t;
//<safra_t,DRA_t, StateMapperFuzzy<result_t, key_t, typename DRA_t::state_type, SafraTreeCandidateMatcher> >
NBA2DA nba2da_fuzzy = new NBA2DA(_detailed_states);
nba2da_fuzzy.convert(safras_algo, dra_result, limit);
}
}
//trueloop_check=true,bool detailed_states=false
public static DA calculateUnion(DRA dra1, DRA dra2, bool trueloop_check)
{
return calculateUnion(dra1, dra2, trueloop_check, false);
}
public static void dba2dra(NBA nba, DRA dra_result, bool complement)
{
//complement=false
DRA dra = dra_result;
APSet ap_set = dra.getAPSet();;
dra.acceptance().newAcceptancePair();
for (int i = 0; i < nba.size(); i++)
{
dra.newState();
if (complement)
{
// Final states -> U_0, all states -> L_0
if (nba[i].isFinal())
{
dra.acceptance().stateIn_U(0, i);
}
dra.acceptance().stateIn_L(0, i);
}
else
{
// Final states -> L_0, U_0 is empty
if (nba[i].isFinal())
{
dra.acceptance().stateIn_L(0, i);
}
}
}
if (nba.getStartState() != null)
{
dra.setStartState(dra[nba.getStartState().getName()]);
}
DA_State sink_state = null;
for (int i = 0; i < nba.size(); i++)
{
NBA_State nba_state = nba[i];
DA_State dra_from = dra[i];
//for (APSet::element_iterator label=ap_set->all_elements_begin();label!=ap_set->all_elements_end(); ++label)
for (int label = ap_set.all_elements_begin(); label != ap_set.all_elements_end(); ++label)
{
BitSet to = nba_state.getEdge(new APElement(label));
int to_cardinality = 0;
if (to != null)
{
to_cardinality = to.cardinality();
}
DA_State dra_to = null;
if (to == null || to_cardinality == 0)
{
// empty to -> go to sink state
if (sink_state == null)
{
// we have to create the sink
sink_state = dra.newState();
// if we complement, we have to add the sink to
// L_0
if (complement)
{
sink_state.acceptance().addTo_L(0);
}
}
dra_to = sink_state;
}
else if (to_cardinality == 1)
{
int to_index = to.nextSetBit(0);
// std::cerr << "to: " << to_index << std::endl;
dra_to = dra[to_index];
}
else
{
// to_cardinality>1 !
throw new IllegalArgumentException("NBA is no DBA!");
}
dra_from.edges().addEdge(new APElement(label), dra_to);
}
}
if (sink_state != null)
{
// there is a sink state
// make true-loop from sink state to itself
//for (APSet::element_iterator label=ap_set->all_elements_begin();label!=ap_set->all_elements_end();++label) {
for (int label = ap_set.all_elements_begin(); label != ap_set.all_elements_end(); ++label)
{
sink_state.edges().addEdge(new APElement(label), sink_state);
}
}
}
//trueloop_check=true,bool detailed_states=false
public static DA calculateUnion(DRA dra1, DRA dra2, bool trueloop_check)
{
return(calculateUnion(dra1, dra2, trueloop_check, false));
}
public override void Initialize(SpecificationBase spec)
{
ltl2ba.Node LTLHeadNode;
switch (ConstraintType)
{
case QueryConstraintType.PROB:
//create the DRA from the BA
LTLHeadNode = LTL2BA.ParseLTL("!(" + this.LTLString + ")", "", new CommonToken(0, ""));
NegativeDRA = BA2DRAConverter.ConvertBA2DRA(BA, LTLHeadNode);
NegativeDRA.DeclarationDatabase = BA.DeclarationDatabase;
//todo: builf the positve DRA too
//create the DRA from the BA
LTLHeadNode = LTL2BA.ParseLTL(this.LTLString, "", new CommonToken(0, ""));
PositiveDRA = BA2DRAConverter.ConvertBA2DRA(PositiveBA, LTLHeadNode);
PositiveDRA.DeclarationDatabase = BA.DeclarationDatabase;
break;
case QueryConstraintType.PMAX:
//create the DRA from the BA
LTLHeadNode = LTL2BA.ParseLTL(this.LTLString, "", new CommonToken(0, ""));
PositiveDRA = BA2DRAConverter.ConvertBA2DRA(PositiveBA, LTLHeadNode);
PositiveDRA.DeclarationDatabase = BA.DeclarationDatabase;
break;
case QueryConstraintType.PMIN:
//create the DRA from the BA
if(AlmostFair)//note add by ssz
{
LTLHeadNode = LTL2BA.ParseLTL(this.LTLString, "", new CommonToken(0, ""));
PositiveDRA = BA2DRAConverter.ConvertBA2DRA(PositiveBA, LTLHeadNode);
PositiveDRA.DeclarationDatabase = BA.DeclarationDatabase;
}
else
{
LTLHeadNode = LTL2BA.ParseLTL("!(" + this.LTLString + ")", "", new CommonToken(0, ""));
NegativeDRA = BA2DRAConverter.ConvertBA2DRA(BA, LTLHeadNode);
NegativeDRA.DeclarationDatabase = BA.DeclarationDatabase;
}
break;
}
if (ConstraintType == QueryConstraintType.NONE)
{
base.Initialize(spec);
}
else
{
//initialize model checking options
ModelCheckingOptions = new ModelCheckingOptions();
List<string> LTLEngine = new List<string>();
LTLEngine.Add(Constants.ENGINE_MDP_SEARCH);
#if DEBUG
LTLEngine.Add(Constants.ENGINE_MDP_MEC_SEARCH);
LTLEngine.Add(Constants.ENGINE_MDP_SIM_SEARCH);
#endif
ModelCheckingOptions.AddAddimissibleBehavior(Constants.COMPLETE_BEHAVIOR, LTLEngine);
}
}
/**
* Generate a new DRA from a coloring
*/
DRA generateDRAfromColoring(DRA oldDRA, Coloring coloring, bool detailedStates)
{
DRA newDRA = oldDRA.createInstance(oldDRA.getAPSet()) as DRA;
newDRA.acceptance().newAcceptancePairs(oldDRA.acceptance().size());
for (int color = 0; color < coloring.countColors(); ++color)
{
newDRA.newState();
}
int old_start_state = oldDRA.getStartState().getName();
int start_state_color = coloring.state2color(old_start_state);
newDRA.setStartState(newDRA.get(start_state_color));
APSet apset = newDRA.getAPSet();
for (int color = 0; color < coloring.countColors(); ++color)
{
DA_State new_state = newDRA.get(color);
int old_state_representative = coloring.color2state(color);
DA_State old_state = oldDRA[old_state_representative];
if (detailedStates)
{
BitSet old_states = coloring.color2states(color);
// create new description...
if (old_states.cardinality() == 1)
{
if (old_state.hasDescription())
{
new_state.setDescription(old_state.getDescription());
}
}
else
{
//std::ostringstream s;
//s << "<TABLE BORDER=\"1\" CELLBORDER=\"0\"><TR><TD>{</TD>";
StringBuilder s = new StringBuilder(@"<TABLE BORDER=\""1\"" CELLBORDER=\""0\""><TR><TD>{</TD>");
bool first = true;
for (int it = BitSetIterator.start(old_states); it != BitSetIterator.end(old_states); it = BitSetIterator.increment(old_states, it))
{
if (first)
{
first = false;
}
else
{
s.Append("<TD>,</TD>");
}
s.Append("<TD>");
if (!oldDRA[it].hasDescription())
{
s.Append(it);
}
else
{
s.Append(oldDRA[it].getDescription());
}
s.Append("</TD>");
}
s.Append("<TD>}</TD></TR></TABLE>");
new_state.setDescription(s.ToString());
;
}
}
// Create appropriate acceptance conditions
int old_state_index = old_state.getName();
for (int i = 0; i < oldDRA.acceptance().size(); ++i)
{
if (oldDRA.acceptance().isStateInAcceptance_L(i, old_state_index))
{
new_state.acceptance().addTo_L(i);
}
if (oldDRA.acceptance().isStateInAcceptance_U(i, old_state_index))
{
new_state.acceptance().addTo_U(i);
}
}
//for (APSet::element_iterator label=apset.all_elements_begin();label!=apset.all_elements_end();++label)
for (int label = apset.all_elements_begin(); label != apset.all_elements_end(); ++label)
{
DA_State old_to = old_state.edges().get(new APElement(label));
int to_color = coloring.state2color(old_to.getName());
new_state.edges().addEdge(new APElement(label), newDRA.get(to_color));
}
}
return(newDRA);
}
/**
* Convert an NBA to an DRA (having APElements as edge labels).
* Throws LimitReachedException if a limit is set (>0) and
* there are more states in the generated DRA than the limit.
* @param nba the NBA
* @param dra_result the DRA where the result is stored
* (has to have same APSet as the nba)
* @param limit a limit for the number of states (0 disables the limit).
*/
//template < typename NBA_t, typename DRA_t>
public void convert(NBA nba, DRA dra_result) //=0
{
convert(nba, dra_result, 0);
}
/// <summary>
/// Run the verification and get the result.
/// </summary>
/// <returns></returns>
public override void RunVerification()
{
if (ConstraintType == QueryConstraintType.NONE)
{
base.RunVerification();
return;
}
if (IsSafety)
{
RunVerificationSafety();
return;
}
if (!IsNegateLiveness)
{
RunVerificationNegate();
return;
}
if (SelectedEngineName == Constants.ENGINE_MDP_SEARCH)
{
switch (ConstraintType)
{
case QueryConstraintType.PROB:
DRA = NegativeDRA;
BuildMDP(); //note this function is just used to calculate the maximal probability.
Min = 1 - mdp.MaxProbability(VerificationOutput);
DRA = PositiveDRA;
BuildMDP();
Max = mdp.MaxProbability(VerificationOutput);
break;
case QueryConstraintType.PMAX:
DRA = PositiveDRA;
BuildMDP();
Max = mdp.MaxProbability(VerificationOutput);
break;
case QueryConstraintType.PMIN:
if (AlmostFair) //note add by ssz
{
DRA = PositiveDRA;
BuildMDP();
Min = mdp.MinProbability(VerificationOutput);
}
else
{
DRA = NegativeDRA;
BuildMDP();
Min = 1 - mdp.MaxProbability(VerificationOutput);
}
break;
}
}
else if (SelectedEngineName == Constants.ENGINE_MDP_MEC_SEARCH)
{
switch (ConstraintType)
{
case QueryConstraintType.PROB:
DRA = NegativeDRA;
BuildMD_ImprovedTarjan(); //note this function is just used to calculate the maximal probability.
Min = 1 - mdp.MaxProbability(VerificationOutput);
DRA = PositiveDRA;
BuildMD_ImprovedTarjan();
Max = mdp.MaxProbability(VerificationOutput);
break;
case QueryConstraintType.PMAX:
DRA = PositiveDRA;
//BuildMDP();
BuildMD_ImprovedTarjan();
Max = mdp.MaxProbability(VerificationOutput);
break;
case QueryConstraintType.PMIN:
if (AlmostFair) //note add by ssz
{
DRA = PositiveDRA;
BuildMD_ImprovedTarjan();
Min = mdp.MinProbability(VerificationOutput);
}
else
{
DRA = NegativeDRA;
BuildMD_ImprovedTarjan();
Min = 1 - mdp.MaxProbability(VerificationOutput);
}
break;
}
}
else if (SelectedEngineName == Constants.ENGINE_MDP_SIM_SEARCH)
{
switch (ConstraintType)
{
case QueryConstraintType.PROB:
DRA = NegativeDRA;
BuildMDP(); //note this function is just used to calculate the maximal probability.
mdp = mdp.ComputeGCPP(VerificationOutput);
Min = 1 - mdp.MaxProbability(VerificationOutput);
DRA = PositiveDRA;
BuildMDP();
mdp = mdp.ComputeGCPP(VerificationOutput);
Max = mdp.MaxProbability(VerificationOutput);
break;
case QueryConstraintType.PMAX:
DRA = PositiveDRA;
BuildMDP();
mdp = mdp.ComputeGCPP(VerificationOutput);
Max = mdp.MaxProbability(VerificationOutput);
break;
case QueryConstraintType.PMIN:
if (AlmostFair) //note add by ssz
{
DRA = PositiveDRA;
BuildMDP();
mdp = mdp.ComputeGCPP(VerificationOutput);
Min = mdp.MinProbability(VerificationOutput);
}
else
{
DRA = NegativeDRA;
BuildMDP();
mdp = mdp.ComputeGCPP(VerificationOutput);
Min = 1 - mdp.MaxProbability(VerificationOutput);
}
break;
}
}
if (Min == 1)
{
VerificationOutput.VerificationResult = VerificationResultType.VALID;
}
else if (Max == 0)
{
VerificationOutput.VerificationResult = VerificationResultType.INVALID;
}
else
{
VerificationOutput.VerificationResult = VerificationResultType.WITHPROBABILITY;
}
}
/** Constructor */
public ColoredStateComparator(Coloring coloring, DRA dra)
{
_coloring = coloring;
_dra = dra;
}
/**
* Generate a DA using the Algorithm
* Throws LimitReachedException if a limit is set (>0) and
* there are more states in the generated DA than the limit.
* @param algo the algorithm
* @param da_result the DA where the result is stored
* (has to have same APSet as the nba)
* @param limit a limit for the number of states (0 disables the limit).
*/
public void convert(DAUnionAlgorithm algo, DRA da_result, int limit)
{
StateMapper <StateInterface, DA_State> state_mapper = new StateMapper <StateInterface, DA_State>();
APSet ap_set = da_result.getAPSet();
if (algo.checkEmpty())
{
da_result.constructEmpty();
return;
}
//typedef typename DA_t::state_type da_state_t;
//typedef typename Algorithm_t::state_t algo_state_t;
//typedef typename Algorithm_t::result_t algo_result_t;
algo.prepareAcceptance(da_result.acceptance());
StateInterface start = algo.getStartState();
DA_State start_state = da_result.newState();
start.generateAcceptance(start_state.acceptance());
if (_detailed_states)
{
start_state.setDescription(start.toHTML());
}
state_mapper.add(start, start_state);
da_result.setStartState(start_state);
//typedef std::pair<algo_state_t, da_state_t*> unprocessed_value;
Stack <KeyValuePair <StateInterface, DA_State> > unprocessed = new Stack <KeyValuePair <StateInterface, DA_State> >();
unprocessed.Push(new KeyValuePair <StateInterface, DA_State>(start, start_state));
while (unprocessed.Count > 0)
{
KeyValuePair <StateInterface, DA_State> top = unprocessed.Pop();
//unprocessed.pop();
StateInterface cur = top.Key;
DA_State from = top.Value;
//for (APSet::element_iterator it_elem = ap_set.all_elements_begin(); it_elem != ap_set.all_elements_end(); ++it_elem)
for (int it_elem = ap_set.all_elements_begin(); it_elem != ap_set.all_elements_end(); ++it_elem)
{
APElement elem = new APElement(it_elem);
ResultStateInterface <UnionState> result = algo.delta(cur as UnionState, elem);
DA_State to = state_mapper.find(result.getState());
if (to == null)
{
to = da_result.newState();
result.getState().generateAcceptance(to.acceptance());
if (_detailed_states)
{
to.setDescription(result.getState().toHTML());
}
state_mapper.add(result.getState(), to);
unprocessed.Push(new KeyValuePair <StateInterface, DA_State>(result.getState(), to));
}
from.edges().set(elem, to);
if (limit != 0 && da_result.size() > limit)
{
throw new LimitReachedException("");
}
}
}
}
/**
* Generate a DA using the Algorithm
* Throws LimitReachedException if a limit is set (>0) and
* there are more states in the generated DA than the limit.
* @param algo the algorithm
* @param da_result the DA where the result is stored
* (has to have same APSet as the nba)
* @param limit a limit for the number of states (0 disables the limit).
*/
public void convert(DAUnionAlgorithm algo, DRA da_result, int limit)
{
StateMapper<StateInterface, DA_State> state_mapper = new StateMapper<StateInterface, DA_State>();
APSet ap_set = da_result.getAPSet();
if (algo.checkEmpty())
{
da_result.constructEmpty();
return;
}
//typedef typename DA_t::state_type da_state_t;
//typedef typename Algorithm_t::state_t algo_state_t;
//typedef typename Algorithm_t::result_t algo_result_t;
algo.prepareAcceptance(da_result.acceptance());
StateInterface start = algo.getStartState();
DA_State start_state = da_result.newState();
start.generateAcceptance(start_state.acceptance());
if (_detailed_states)
{
start_state.setDescription(start.toHTML());
}
state_mapper.add(start, start_state);
da_result.setStartState(start_state);
//typedef std::pair<algo_state_t, da_state_t*> unprocessed_value;
Stack<KeyValuePair<StateInterface, DA_State>> unprocessed = new Stack<KeyValuePair<StateInterface, DA_State>>();
unprocessed.Push(new KeyValuePair<StateInterface, DA_State>(start, start_state));
while (unprocessed.Count > 0)
{
KeyValuePair<StateInterface, DA_State> top = unprocessed.Pop();
//unprocessed.pop();
StateInterface cur = top.Key;
DA_State from = top.Value;
//for (APSet::element_iterator it_elem = ap_set.all_elements_begin(); it_elem != ap_set.all_elements_end(); ++it_elem)
for (int it_elem = ap_set.all_elements_begin(); it_elem != ap_set.all_elements_end(); ++it_elem)
{
APElement elem = new APElement(it_elem);
ResultStateInterface<UnionState> result = algo.delta(cur as UnionState, elem);
DA_State to = state_mapper.find(result.getState());
if (to == null)
{
to = da_result.newState();
result.getState().generateAcceptance(to.acceptance());
if (_detailed_states)
{
to.setDescription(result.getState().toHTML());
}
state_mapper.add(result.getState(), to);
unprocessed.Push(new KeyValuePair<StateInterface, DA_State>(result.getState(), to));
}
from.edges().set(elem, to);
if (limit != 0 && da_result.size() > limit)
{
throw new LimitReachedException("");
}
}
}
}
/**
* Generate a DA using the Algorithm
* Throws LimitReachedException if a limit is set (>0) and
* there are more states in the generated DA than the limit.
* @param algo the algorithm
* @param da_result the DA where the result is stored
* (has to have same APSet as the nba)
* @param limit a limit for the number of states (0 disables the limit).
*/
public void convert(SafraAlgorithm algo, DRA da_result, int limit)
{
/** The hash map from DA_State to StateInterface */
StateMapper <StateInterface, DA_State> state_mapper = new StateMapper <StateInterface, DA_State>();
APSet ap_set = da_result.getAPSet();////////////************where dose this dra have ap_set?
if (algo.checkEmpty())
{
da_result.constructEmpty();
return;
}
//typedef typename DA_t::state_type da_state_t;
//typedef typename Algorithm_t::state_t algo_state_t;
//typedef typename Algorithm_t::result_t algo_result_t;
//* Creates new acceptance pairs according to da_result's acceptance.
algo.prepareAcceptance(da_result.acceptance());////*********don't understand well
StateInterface start = algo.getStartState();
DA_State start_state = da_result.newState();/////************?? what is in this newState?
start.generateAcceptance(start_state.acceptance());
if (_detailed_states)
{
start_state.setDescription(start.toHTML());
}
state_mapper.add(start, start_state);
da_result.setStartState(start_state);
//typedef std::pair<algo_state_t, da_state_t*> unprocessed_value;
Stack <KeyValuePair <StateInterface, DA_State> > unprocessed = new Stack <KeyValuePair <StateInterface, DA_State> >();
unprocessed.Push(new KeyValuePair <StateInterface, DA_State>(start, start_state));
while (unprocessed.Count > 0)
{
KeyValuePair <StateInterface, DA_State> top = unprocessed.Pop();
//unprocessed.pop();
StateInterface cur = top.Key; //safratreeNode
DA_State from = top.Value; //DA_state
//for (APSet::element_iterator it_elem = ap_set.all_elements_begin(); it_elem != ap_set.all_elements_end(); ++it_elem)
for (int it_elem = ap_set.all_elements_begin(); it_elem != ap_set.all_elements_end(); ++it_elem) ///from 0 to 2^ap_set.size
{
APElement elem = new APElement(it_elem); /////////set simpleBitset = it_elem
ResultStateInterface <SafraTree> result = algo.delta(cur as SafraTree, elem); /////get a new safraTree through elem
DA_State to = state_mapper.find(result.getState());
if (to == null)////////////////result is not in state mapper.
{
to = da_result.newState();
result.getState().generateAcceptance(to.acceptance());
if (_detailed_states)
{
to.setDescription(result.getState().toHTML());
}
state_mapper.add(result.getState(), to);
unprocessed.Push(new KeyValuePair <StateInterface, DA_State>(result.getState(), to));
}
from.edges().set(elem, to);//////////////add this edge.
if (limit != 0 && da_result.size() > limit)
{
throw new LimitReachedException("");
}
}
}
}
/**
* Generate a DA using the Algorithm
* Throws LimitReachedException if a limit is set (>0) and
* there are more states in the generated DA than the limit.
* @param algo the algorithm
* @param da_result the DA where the result is stored
* (has to have same APSet as the nba)
* @param limit a limit for the number of states (0 disables the limit).
*/
public void convert(SafraAlgorithm algo, DRA da_result, int limit)
{
/** The hash map from DA_State to StateInterface */
StateMapper<StateInterface, DA_State> state_mapper = new StateMapper<StateInterface, DA_State>();
APSet ap_set = da_result.getAPSet();////////////************where dose this dra have ap_set?
if (algo.checkEmpty())
{
da_result.constructEmpty();
return;
}
//typedef typename DA_t::state_type da_state_t;
//typedef typename Algorithm_t::state_t algo_state_t;
//typedef typename Algorithm_t::result_t algo_result_t;
//* Creates new acceptance pairs according to da_result's acceptance.
algo.prepareAcceptance(da_result.acceptance());////*********don't understand well
StateInterface start = algo.getStartState();
DA_State start_state = da_result.newState();/////************?? what is in this newState?
start.generateAcceptance(start_state.acceptance());
if (_detailed_states)
{
start_state.setDescription(start.toHTML());
}
state_mapper.add(start, start_state);
da_result.setStartState(start_state);
//typedef std::pair<algo_state_t, da_state_t*> unprocessed_value;
Stack<KeyValuePair<StateInterface, DA_State>> unprocessed = new Stack<KeyValuePair<StateInterface, DA_State>>();
unprocessed.Push(new KeyValuePair<StateInterface, DA_State>(start, start_state));
while (unprocessed.Count > 0)
{
KeyValuePair<StateInterface, DA_State> top = unprocessed.Pop();
//unprocessed.pop();
StateInterface cur = top.Key;//safratreeNode
DA_State from = top.Value;//DA_state
//for (APSet::element_iterator it_elem = ap_set.all_elements_begin(); it_elem != ap_set.all_elements_end(); ++it_elem)
for (int it_elem = ap_set.all_elements_begin(); it_elem != ap_set.all_elements_end(); ++it_elem)///from 0 to 2^ap_set.size
{
APElement elem = new APElement(it_elem);/////////set simpleBitset = it_elem
ResultStateInterface<SafraTree> result = algo.delta(cur as SafraTree, elem);/////get a new safraTree through elem
DA_State to = state_mapper.find(result.getState());
if (to == null)////////////////result is not in state mapper.
{
to = da_result.newState();
result.getState().generateAcceptance(to.acceptance());
if (_detailed_states)
{
to.setDescription(result.getState().toHTML());
}
state_mapper.add(result.getState(), to);
unprocessed.Push(new KeyValuePair<StateInterface, DA_State>(result.getState(), to));
}
from.edges().set(elem, to);//////////////add this edge.
if (limit != 0 && da_result.size() > limit)
{
throw new LimitReachedException("");
}
}
}
}
/**
* Internal helper function to perform the conversion from NBA to DRA.
* @param nba the NBA (has to be deterministic)
* @param dra_result the DRA into which the converted automaton is saved
* @param complement complement the DBA?
*/
public static void dba2dra(NBA nba, DRA dra_result)
{
dba2dra(nba, dra_result, false);
}
/** The output format */
//enum {OUT_v2, OUT_NBA, OUT_DOT, OUT_PLUGIN} flag_output;
public static DRA ConvertBA2DRA(BuchiAutomata BA, Node LTLHeadNode)
{
/** Flag: Convert LTL->DRA->NBA? */
//bool flag_dra2nba;
/** Flag: Print the NBA afert LTL->NBA? */
//bool flag_print_ltl_nba;
/** Flag: Use limiting with scheduler? */
bool flag_sched_limits;
/** The limiting factor for the scheduler (alpha) */
double alpha;
/** The options for Safra's algorithm */
Options_Safra opt_safra = new Options_Safra();
/** The options for LTL2DSTAR */
LTL2DSTAR_Options opt_ltl2dstar = new LTL2DSTAR_Options();
opt_ltl2dstar.opt_safra = opt_safra;
// std::map<std::string, std::string> defaults;
//defaults["--ltl2nba"]="--ltl2nba=spin:ltl2ba";
//defaults["--automata"]="--automata=rabin";
//defaults["--output"]="--output=automaton";
//defaults["--detailed-states"]="--detailed-states=no";
//defaults["--safra"]="--safra=all";
//defaults["--bisimulation"]="--bisimulation=yes";
//defaults["--opt-acceptance"]="--opt-acceptance=yes";
//defaults["--union"]="--union=yes";
//defaults["--alpha"]="--alpha=10.0";
//defaults["--stutter"]="--stutter=yes";
//defaults["--partial-stutter"]="--partial-stutter=no";
//// defaults["--scheck"]=""; // scheck disabled
///
///
// default values...
//flag_dra2nba = false;
flag_sched_limits = false;
alpha = 1.0;
// options not yet covered
//flag_print_ltl_nba = false;
//flag_stat_nba = false;
//if (isRabin)
//{
opt_ltl2dstar.automata = automata_type.RABIN;
//}
//else
//{
// opt_ltl2dstar.automata = automata_type.STREETT;
//}
opt_safra.opt_all();
opt_safra.stutter = false;
opt_ltl2dstar.bisim = false;
opt_safra.opt_rename = false;
LTLFormula ltl = LTLPrefixParser.parse(LTLHeadNode);
//APSet ap_set = ltl.getAPSet();
//Debug.Assert(ltl2nba != null);
LTL2DRA ltl2dra = new LTL2DRA(opt_safra); //, ltl2nba.get()
//if (opt_ltl2dstar.automata == automata_type.ORIGINAL_NBA)
//{
// // We just generate the NBA for the LTL formula
// // and print it
// NBA nba = ltl2dra.ltl2nba(ltl);
// if (nba == null)
// {
// throw new Exception("Can't generate NBA for LTL formula");
// }
// //if (flag_output==OUT_DOT) {
// // nba->print_dot(out);
// //} else {
// // nba->print_lbtt(out);
// //}
// //return 0;
//}
LTL2DSTAR_Scheduler ltl2dstar_sched = new LTL2DSTAR_Scheduler(ltl2dra, flag_sched_limits, alpha);
//ltl2dstar_sched.flagStatNBA(flag_stat_nba);
ltl2dstar_sched.flagStatNBA(false);
opt_ltl2dstar.opt_safra = opt_safra;
DRA dra = ltl2dstar_sched.calculate(ltl, BA, opt_ltl2dstar);
//if (!dra.isCompact()) {
// dra.makeCompact();
//}
if (dra == null)
{
throw new Exception("Couldn't generate DRA!");
}
//if (!dra.isCompact()) {
// dra.makeCompact();
//}
return(dra);
}
/**
* Convert an LTL formula to a DRA.
* @param ltl the LTL formula
* @param options which operators are allowed
* @return a shared_ptr to the DRA
*/
private DRA ltl2dra(LTLFormula ltl, BuchiAutomata buchiAutomata, LTL2DSTAR_Options options)
{
APSet ap_set = ltl.getAPSet();
LTLFormula ltl_pnf = ltl.toPNF();
if (options.allow_union && ltl_pnf.getRootNode().getType() == type_t.T_OR)
{
LTLFormula ltl_left = ltl_pnf.getSubFormula(ltl_pnf.getRootNode().getLeft());
LTLFormula ltl_right = ltl_pnf.getSubFormula(ltl_pnf.getRootNode().getRight());
LTL2DSTAR_Options rec_opt = options;
rec_opt.recursion();
DRA dra_left = ltl2dra(ltl_left, buchiAutomata, rec_opt);
DRA dra_right = ltl2dra(ltl_right,buchiAutomata, rec_opt);
return DRA.calculateUnion(dra_left, dra_right, _safra_opt.union_trueloop) as DRA;
}
if (options.safety)
{
LTLSafetyAutomata lsa = new LTLSafetyAutomata();
DRA safety_dra = lsa.ltl2dra(ltl, buchiAutomata);
if (safety_dra != null)
{
return safety_dra;
}
}
DRA dra = new DRA(ap_set);
NBA nba = LTL2NBA.ltl2nba(ltl_pnf, buchiAutomata);
if (nba == null)
{
throw new Exception("Couldn't create NBA from LTL formula");
}
NBA2DRA nba2dra = new NBA2DRA(_safra_opt);
nba2dra.convert(nba, dra);
if (options.optimizeAcceptance)
{
dra.optimizeAcceptanceCondition();
}
if (options.bisim)
{
DRAOptimizations dra_optimizer = new DRAOptimizations();
dra = dra_optimizer.optimizeBisimulation(dra);
}
return dra;
}
/** Constructor */
public ColoredStateComparator(Coloring coloring, DRA dra)
{
_coloring = coloring;
_dra = dra;
}
/**
* Generate a new DRA from a coloring
*/
DRA generateDRAfromColoring(DRA oldDRA, Coloring coloring, bool detailedStates)
{
DRA newDRA = oldDRA.createInstance(oldDRA.getAPSet()) as DRA;
newDRA.acceptance().newAcceptancePairs(oldDRA.acceptance().size());
for (int color = 0; color < coloring.countColors(); ++color)
{
newDRA.newState();
}
int old_start_state = oldDRA.getStartState().getName();
int start_state_color = coloring.state2color(old_start_state);
newDRA.setStartState(newDRA.get(start_state_color));
APSet apset = newDRA.getAPSet();
for (int color = 0; color < coloring.countColors(); ++color)
{
DA_State new_state = newDRA.get(color);
int old_state_representative = coloring.color2state(color);
DA_State old_state = oldDRA[old_state_representative];
if (detailedStates)
{
BitSet old_states = coloring.color2states(color);
// create new description...
if (old_states.cardinality() == 1)
{
if (old_state.hasDescription())
{
new_state.setDescription(old_state.getDescription());
}
}
else
{
//std::ostringstream s;
//s << "<TABLE BORDER=\"1\" CELLBORDER=\"0\"><TR><TD>{</TD>";
StringBuilder s = new StringBuilder(@"<TABLE BORDER=\""1\"" CELLBORDER=\""0\""><TR><TD>{</TD>");
bool first = true;
for (int it = BitSetIterator.start(old_states); it != BitSetIterator.end(old_states); it = BitSetIterator.increment(old_states, it))
{
if (first)
{
first = false;
}
else
{
s.Append("<TD>,</TD>");
}
s.Append("<TD>");
if (!oldDRA[it].hasDescription())
{
s.Append(it);
}
else
{
s.Append(oldDRA[it].getDescription());
}
s.Append("</TD>");
}
s.Append("<TD>}</TD></TR></TABLE>");
new_state.setDescription(s.ToString());
;
}
}
// Create appropriate acceptance conditions
int old_state_index = old_state.getName();
for (int i = 0; i < oldDRA.acceptance().size(); ++i)
{
if (oldDRA.acceptance().isStateInAcceptance_L(i, old_state_index))
{
new_state.acceptance().addTo_L(i);
}
if (oldDRA.acceptance().isStateInAcceptance_U(i, old_state_index))
{
new_state.acceptance().addTo_U(i);
}
}
//for (APSet::element_iterator label=apset.all_elements_begin();label!=apset.all_elements_end();++label)
for (int label = apset.all_elements_begin(); label != apset.all_elements_end(); ++label)
{
DA_State old_to = old_state.edges().get(new APElement(label));
int to_color = coloring.state2color(old_to.getName());
new_state.edges().addEdge(new APElement(label), newDRA.get(to_color));
}
}
return newDRA;
}
/**
* Internal helper function to perform the conversion from NBA to DRA.
* @param nba the NBA (has to be deterministic)
* @param dra_result the DRA into which the converted automaton is saved
* @param complement complement the DBA?
*/
public static void dba2dra(NBA nba, DRA dra_result)
{
dba2dra(nba, dra_result, false);
}
/**
* Constructor, get initial size of the coloring from DRA.
* @param dra the DRA
* @param detailed Keep detailed information on the equivalence classes?
*/
public Coloring(DRA dra, bool detailed) //=false
{
_nr_of_colors = 0;
_detailed = detailed;
_coloring = new List<int>();
Ultility.resize(_coloring, dra.size());
_color2state = new List<int>();
//_coloring.resize(dra.size());
if (_detailed)
{
_color2states = new List<BitSet>();
}
else
{
_color2states = null;
}
}
public static void dba2dra(NBA nba, DRA dra_result, bool complement)
{
//complement=false
DRA dra = dra_result;
APSet ap_set = dra.getAPSet(); ;
dra.acceptance().newAcceptancePair();
for (int i = 0; i < nba.size(); i++)
{
dra.newState();
if (complement)
{
// Final states -> U_0, all states -> L_0
if (nba[i].isFinal())
{
dra.acceptance().stateIn_U(0, i);
}
dra.acceptance().stateIn_L(0, i);
}
else
{
// Final states -> L_0, U_0 is empty
if (nba[i].isFinal())
{
dra.acceptance().stateIn_L(0, i);
}
}
}
if (nba.getStartState() != null)
{
dra.setStartState(dra[nba.getStartState().getName()]);
}
DA_State sink_state = null;
for (int i = 0; i < nba.size(); i++)
{
NBA_State nba_state = nba[i];
DA_State dra_from = dra[i];
//for (APSet::element_iterator label=ap_set->all_elements_begin();label!=ap_set->all_elements_end(); ++label)
for (int label = ap_set.all_elements_begin(); label != ap_set.all_elements_end(); ++label)
{
BitSet to = nba_state.getEdge(new APElement(label));
int to_cardinality = 0;
if (to != null)
{
to_cardinality = to.cardinality();
}
DA_State dra_to = null;
if (to == null || to_cardinality == 0)
{
// empty to -> go to sink state
if (sink_state == null)
{
// we have to create the sink
sink_state = dra.newState();
// if we complement, we have to add the sink to
// L_0
if (complement)
{
sink_state.acceptance().addTo_L(0);
}
}
dra_to = sink_state;
}
else if (to_cardinality == 1)
{
int to_index = to.nextSetBit(0);
// std::cerr << "to: " << to_index << std::endl;
dra_to = dra[to_index];
}
else
{
// to_cardinality>1 !
throw new IllegalArgumentException("NBA is no DBA!");
}
dra_from.edges().addEdge(new APElement(label), dra_to);
}
}
if (sink_state != null)
{
// there is a sink state
// make true-loop from sink state to itself
//for (APSet::element_iterator label=ap_set->all_elements_begin();label!=ap_set->all_elements_end();++label) {
for (int label = ap_set.all_elements_begin(); label != ap_set.all_elements_end(); ++label)
{
sink_state.edges().addEdge(new APElement(label), sink_state);
}
}
}
/** Type of an acceptance signature */
// public KeyValuePair<BitSet, BitSet> acceptance_signature_t;
/**
* Constructor, fills the container with the acceptance signatures of the states.
* @param dra the DRA
*/
public AcceptanceSignatureContainer(DRA dra)
{
//_acceptancesig_vector.resize(dra.size());
_acceptancesig_vector = new List<KeyValuePair<BitSet, BitSet>>();
//Ultility.resize(_acceptancesig_vector, dra.size());
_bitsets = new List<BitSet>();
for (int i = 0; i < dra.size(); i++)
{
BitSet b = dra.acceptance().getAcceptance_L_forState(i);
BitSet bp = new BitSet(b);
_bitsets.Add(bp); //push_back
// _acceptancesig_vector[i].Key = bp;
b = dra.acceptance().getAcceptance_U_forState(i);
BitSet bp1 = new BitSet(b);
_bitsets.Add(bp1); //
//_acceptancesig_vector[i].Value = bp1;
_acceptancesig_vector.Add(new KeyValuePair<BitSet, BitSet>(bp, bp1));
}
}
/** Calculate the automaton for this building block, by default
* calculate the automata for the children and then choose the smallest. */
public virtual void calculate(int level, int limit)
{
//if (_options.verbose_scheduler) {
// std::cerr << "Calculate ("<< level <<"): " << typeid(*this).name() << std::endl;
//}
calculateChildren(level, limit);
bool first = true;
//for (child_vector::iterator it=children.begin();it!=children.end();++it)
for (int i = 0; i < children.Count; i++)
{
LTL2DSTAR_Tree it = children[i];
if (it._automaton == null)
{
continue;
}
if (first)
{
_automaton = it._automaton;
_comment = it._comment;
}
else
{
if (_automaton.size() > it._automaton.size())
{
_automaton = it._automaton;
_comment = it._comment;
}
}
first = false;
}
hook_after_calculate();
}
