412 lines
9.5 KiB
C++
412 lines
9.5 KiB
C++
/*
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Copyright (c) 2012-2014
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Artur Meski <meski@ipipan.waw.pl>
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Reuse of the code or its part for any purpose
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without the author's permission is strictly prohibited.
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*/
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#include "symrs.hh"
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BDD SymRS::encAtom_raw(RctSys::Atom atom, bool succ) const
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{
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BDD r;
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if (succ)
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r = (*pv_succ)[atom];
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else
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r = (*pv)[atom];
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return r;
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}
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BDD SymRS::encAtomsConj_raw(const RctSys::Atoms &atoms, bool succ)
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{
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BDD r = BDD_TRUE;
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for (auto atom = atoms.begin(); atom != atoms.end(); ++atom)
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{
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if (succ) r *= encAtomSucc(*atom);
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else r *= encAtom(*atom);
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}
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return r;
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}
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BDD SymRS::encAtomsDisj_raw(const RctSys::Atoms &atoms, bool succ)
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{
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BDD r = BDD_FALSE;
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for (auto atom = atoms.begin(); atom != atoms.end(); ++atom)
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{
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if (succ) r += encAtomSucc(*atom);
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else r += encAtom(*atom);
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}
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return r;
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}
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BDD SymRS::encStateActAtomsConj(const RctSys::Atoms &atoms)
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{
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BDD r = BDD_TRUE;
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for (auto atom = atoms.begin(); atom != atoms.end(); ++atom)
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{
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BDD state_act = encAtom(*atom);
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int actAtom;
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if ((actAtom = getMappedStateToActID(*atom)) >= 0)
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state_act += encActAtom(actAtom);
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r *= state_act;
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}
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return r;
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}
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BDD SymRS::encStateActAtomsDisj(const RctSys::Atoms &atoms)
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{
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BDD r = BDD_FALSE;
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for (auto atom = atoms.begin(); atom != atoms.end(); ++atom)
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{
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BDD state_act = encAtom(*atom);
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int actAtom;
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if ((actAtom = getMappedStateToActID(*atom)) >= 0)
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state_act += encActAtom(actAtom);
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r += state_act;
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}
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return r;
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}
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BDD SymRS::compState(const BDD &state) const
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{
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BDD s = state;
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for (unsigned int i = 0; i < totalStateVars; ++i)
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{
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if (!(*pv)[i] * state != cuddMgr->bddZero())
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s *= !(*pv)[i];
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}
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return s;
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}
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BDD SymRS::compContext(const BDD &context) const
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{
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BDD c = context;
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for (unsigned int i = 0; i < totalActions; ++i)
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{
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if (!(*pv_act)[i] * context != cuddMgr->bddZero())
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c *= !(*pv_act)[i];
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}
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return c;
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}
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std::string SymRS::decodedStateToStr(const BDD &state)
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{
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std::string s = "{ ";
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for (unsigned int i = 0; i < totalStateVars; ++i)
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{
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if (!(encAtom(i) * state).IsZero())
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{
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s += rs->atomToStr(i) + " ";
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}
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}
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s += "}";
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return s;
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}
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void SymRS::printDecodedStates(const BDD &states)
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{
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BDD unproc = states;
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while (!unproc.IsZero())
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{
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BDD t = unproc.PickOneMinterm(*pv);
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cout << decodedStateToStr(t) << endl;
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if (opts->verbose > 9) {
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t.PrintMinterm();
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cout << endl;
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}
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unproc -= t;
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}
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}
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void SymRS::initBDDvars(void)
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{
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cuddMgr = new Cudd(0,0);
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//RctSys::Atoms aa = rs->actionAtoms;
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VERB("Preparing BDD variables");
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pv = new vector<BDD>(totalStateVars);
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pv_succ = new vector<BDD>(totalStateVars);
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pv_act = new vector<BDD>(totalActions);
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pv_E = new BDD(cuddMgr->bddOne());
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pv_succ_E = new BDD(cuddMgr->bddOne());
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pv_act_E = new BDD(cuddMgr->bddOne());
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//unsigned int j = 0;
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for (unsigned int i = 0; i < totalStateVars; ++i)
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{
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(*pv)[i] = cuddMgr->bddVar(i*2);
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(*pv_succ)[i] = cuddMgr->bddVar((i*2)+1);
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//(*pv_act)[i] = cuddMgr->bddVar(totalStateVars*2+i);
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*pv_E *= (*pv)[i];
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*pv_succ_E *= (*pv_succ)[i];
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//if (rs->actionAtoms.find(i) == rs->actionAtoms.end())
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// (*pv_noact)[j++] = cuddMgr->bddVar(i*2);
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}
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unsigned int offset = totalStateVars * 2;
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for (unsigned int i = 0; i < totalActions; ++i)
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{
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(*pv_act)[i] = cuddMgr->bddVar(offset+i);
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*pv_act_E *= (*pv_act)[i];
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}
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VERB("Variables ready");
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}
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void SymRS::encodeTransitions(void)
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{
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DecompReactions dr;
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VERB("Decomposing reactions");
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for (unsigned int i = 0; i < totalReactions; ++i)
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{
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ReactionCond cond;
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cond.rctt = rs->reactions[i].rctt;
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cond.inhib = rs->reactions[i].inhib;
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for (RctSys::Atoms::iterator p = rs->reactions[i].prod.begin();
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p != rs->reactions[i].prod.end(); ++p)
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{
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dr[*p].push_back(cond);
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}
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}
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VERB("Encoding reactions");
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if (opts->part_tr_rel)
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{
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VERB("Using partitioned transition relation encoding");
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partTrans = new vector<BDD>(totalStateVars);
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}
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else
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{
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VERB("Using monolithic transition relation encoding");
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monoTrans = new BDD(BDD_TRUE);
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}
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for (unsigned int p = 0; p < totalStateVars; ++p)
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{
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VERB_L3("Encoding for successor " << p);
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DecompReactions::iterator di;
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if ((di = dr.find(p)) == dr.end())
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{
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// nie ma reakcji produkujacej p:
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if (opts->part_tr_rel)
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(*partTrans)[p] = !encAtomSucc(p);
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else
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{
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*monoTrans *= !encAtomSucc(p);
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}
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}
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else
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{
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// di - reakcje produkujace p
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BDD conditions = BDD_FALSE;
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assert(di->second.size() > 0);
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for (unsigned int j = 0; j < di->second.size(); ++j)
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{
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conditions += encStateActAtomsConj(di->second[j].rctt) * !encStateActAtomsDisj(di->second[j].inhib);
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}
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if (opts->part_tr_rel)
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{
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(*partTrans)[p] = conditions * encAtomSucc(p);
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(*partTrans)[p] += !conditions * !encAtomSucc(p);
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}
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else
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{
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*monoTrans *= (conditions * encAtomSucc(p)) + (!conditions * !encAtomSucc(p));
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}
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}
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if (opts->reorder_trans)
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{
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VERB_L2("Reordering");
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Cudd_ReduceHeap(cuddMgr->getManager(), CUDD_REORDER_SIFT, 10000);
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}
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}
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/*
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for (unsigned int p = 0; p < totalStateVars; ++p) // we iterate through products
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{
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RctSys::Atoms::iterator ai = rs->actionAtoms.find(p);
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DecompReactions::iterator di;
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if ((di = dr.find(p)) == dr.end())
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{
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(*partTrans)[p] = cuddMgr->bddOne();
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if (ai == rs->actionAtoms.end())
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(*partTrans)[p] *= !encAtomSucc(p);
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}
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else
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{
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BDD conditions = cuddMgr->bddZero();
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for (unsigned int j = 0; j < di->second.size(); ++j)
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{
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conditions += encAtomsConj(di->second[j].rctt) * !encAtomsDisj(di->second[j].inhib);
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}
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(*partTrans)[p] = conditions * encAtomSucc(p);
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if (ai == rs->actionAtoms.end())
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{
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// not an action entity
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(*partTrans)[p] += !conditions * !encAtomSucc(p);
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}
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else
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{
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// action entity
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(*partTrans)[p] += cuddMgr->bddOne(); //(encAtomSucc(p) + !encAtomSucc(p));
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}
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}
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}
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*/
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VERB("Reactions ready");
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}
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BDD SymRS::getEncState(const RctSys::Atoms &atoms)
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{
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assert(0);
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//BDD state = compState(encAtomsConj(rs->initState));
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//for (RctSys::Atoms::iterator at = rs->actionAtoms.begin(); at != rs->actionAtoms.end(); ++at)
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//{
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// state = state.ExistAbstract(encAtom(*at));
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//}
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return BDD_FALSE;
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}
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BDD SymRS::encNoContext(void)
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{
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BDD noContextBDD = BDD_TRUE;
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for (unsigned int i = 0; i < totalActions; ++i)
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{
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noContextBDD *= !(*pv_act)[i];
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}
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return noContextBDD;
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}
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void SymRS::encodeInitStates(void)
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{
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VERB("Encoding initial states");
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#ifndef NDEBUG
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if (opts->part_tr_rel)
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assert(partTrans != NULL);
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#endif
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initStates = new BDD(BDD_FALSE);
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for (auto state = rs->initStates.begin();
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state != rs->initStates.end();
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++state)
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{
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VERB("Encoding a single inital state");
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BDD newInitState = compState(encAtomsConj(*state));
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BDD q = BDD_TRUE;
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if (opts->part_tr_rel)
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{
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for (unsigned int i = 0; i < partTrans->size(); ++i)
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{
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q *= newInitState * (*partTrans)[i] * encNoContext();
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}
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}
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else
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{
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q *= newInitState * *monoTrans * encNoContext();
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}
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q = (q.ExistAbstract(*pv_E)).SwapVariables(*pv_succ, *pv);
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q = q.ExistAbstract(*pv_act_E);
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*initStates += q;
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}
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VERB("Initial states encoded");
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}
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void SymRS::mapStateToAct(void)
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{
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VERB("Mapping state variables to action variables");
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unsigned int j = 0;
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for (unsigned int i = 0; i < totalStateVars; ++i)
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{
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if (rs->isActionAtom(i)) {
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stateToAct.push_back(j++);
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}
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else
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{
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stateToAct.push_back(-1);
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}
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}
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if (opts->verbose > 9)
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{
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for (unsigned int i = 0; i < stateToAct.size(); ++i)
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{
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cout << "ii VERBOSE(9): stateToAct[" << i << "] = " << stateToAct[i] << endl;
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}
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}
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}
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void SymRS::encode(void)
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{
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VERB("Encoding...");
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if (opts->measure)
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{
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opts->enc_time = cpuTime();
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opts->enc_mem = memUsed();
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}
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mapStateToAct();
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initBDDvars();
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encodeTransitions();
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encodeInitStates();
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if (opts->measure)
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{
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opts->enc_time = cpuTime() - opts->enc_time;
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opts->enc_mem = memUsed() - opts->enc_mem;
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}
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VERB("Encoding done");
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}
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BDD SymRS::encActStrAtom(std::string name) const {
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int id = getMappedStateToActID(rs->getAtomID(name));
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if (id < 0)
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{
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FERROR("Entity \"" << name << "\" not defined as context entity");
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return BDD_FALSE;
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} else {
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return encActAtom(getMappedStateToActID(rs->getAtomID(name)));
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}
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}
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