int main(int argc, char** argv) {
// set up vtree and manager
SddLiteral var_count = 4;
const char* type = "right";
Vtree* vtree = sdd_vtree_new(var_count,type);
SddManager* manager = sdd_manager_new(vtree);
// construct the term X_1 ^ X_2 ^ X_3 ^ X_4
SddNode* alpha = sdd_manager_literal(1,manager);
alpha = sdd_conjoin(alpha,sdd_manager_literal(2,manager),manager);
alpha = sdd_conjoin(alpha,sdd_manager_literal(3,manager),manager);
alpha = sdd_conjoin(alpha,sdd_manager_literal(4,manager),manager);
// construct the term ~X_1 ^ X_2 ^ X_3 ^ X_4
SddNode* beta = sdd_manager_literal(-1,manager);
beta = sdd_conjoin(beta,sdd_manager_literal(2,manager),manager);
beta = sdd_conjoin(beta,sdd_manager_literal(3,manager),manager);
beta = sdd_conjoin(beta,sdd_manager_literal(4,manager),manager);
// construct the term ~X_1 ^ ~X_2 ^ X_3 ^ X_4
SddNode* gamma = sdd_manager_literal(-1,manager);
gamma = sdd_conjoin(gamma,sdd_manager_literal(-2,manager),manager);
gamma = sdd_conjoin(gamma,sdd_manager_literal(3,manager),manager);
gamma = sdd_conjoin(gamma,sdd_manager_literal(4,manager),manager);
printf("== before referencing:\n");
printf(" live sdd size = %zu\n", sdd_manager_live_size(manager));
printf(" dead sdd size = %zu\n", sdd_manager_dead_size(manager));
// ref SDDs so that they are not garbage collected
sdd_ref(alpha,manager);
sdd_ref(beta,manager);
sdd_ref(gamma,manager);
printf("== after referencing:\n");
printf(" live sdd size = %zu\n", sdd_manager_live_size(manager));
printf(" dead sdd size = %zu\n", sdd_manager_dead_size(manager));
// garbage collect
sdd_manager_garbage_collect(manager);
printf("== after garbage collection:\n");
printf(" live sdd size = %zu\n", sdd_manager_live_size(manager));
printf(" dead sdd size = %zu\n", sdd_manager_dead_size(manager));
sdd_deref(alpha,manager);
sdd_deref(beta,manager);
sdd_deref(gamma,manager);
printf("saving vtree & shared sdd ...\n");
sdd_vtree_save_as_dot("output/shared-vtree.dot",vtree);
sdd_shared_save_as_dot("output/shared.dot",manager);
sdd_vtree_free(vtree);
sdd_manager_free(manager);
return 0;
}
int main(int argc, char** argv) {
//Read input and convert to KFormulas.
Options* opts = new Options(argc,argv);
KFormula* notPsiNNF;
std::string input;
getline (std::cin, input);
if (opts->verbose) std::cout << "Building Kformulas from input...\n";
if (input.length() == 0) {
std::cout << "Empty formula is valid.";
return 0;
} else if (opts->satisfying) {
notPsiNNF = KFormula::toBoxNNF(KFormula::parseKFormula(input.c_str()));
} else {
notPsiNNF = KFormula::toBoxNNF(new KFormula(KFormula::NOT,KFormula::parseKFormula(input.c_str()),NULL));
}
if (opts->verbose) std::cout << " Kformulas built!\n";
//Gather atoms from KFormulas and assign literals.
if (opts->verbose) std::cout << "Assigning literals...\n";
std::vector<KFormula*> atoms = KFormula::getAtoms(notPsiNNF);
SddLiteral var_count = compiler::setLiterals(atoms, literalsToAtoms, atomsToLiterals);
if (opts->verbose) {
std::cout << " Literals assigned!\n";
}
//Initialise SDD library.
Vtree* vtree = sdd_vtree_new(var_count,"balanced");
SddManager* m = sdd_manager_new(vtree);
sdd_vtree_free(vtree);
sdd_manager_auto_gc_and_minimize_on(m);
//sdd_manager_set_minimize_function(sdd_vtree_minimize,m);
//Build SDDs
if (opts->verbose) std::cout << "Converting Kformulas to SDDs...\n";
std::chrono::high_resolution_clock::time_point t1 = std::chrono::high_resolution_clock::now();
SddNode* notPsiSdd = compiler::KtoSDD(notPsiNNF,m);
sdd_ref(notPsiSdd,m);
std::chrono::high_resolution_clock::time_point t2 = std::chrono::high_resolution_clock::now();
auto SddDuration = std::chrono::duration_cast<std::chrono::microseconds>( t2 - t1 ).count();
int SddCount = sdd_count(notPsiSdd);
int SddSize = sdd_size(notPsiSdd);
if (opts->reportSize) {
std::cout << SddCount << "\n";
return 0;
}
if (opts->verbose) std::cout << " SDD conversion complete!\n";
//Check satisfiability or validity
Prover* prover = proverFactory::getProver(opts->logic,literalsToAtoms, atomsToLiterals);
t1 = std::chrono::high_resolution_clock::now();
bool isSat = prover->isSatisfiable(notPsiSdd,m);
t2 = std::chrono::high_resolution_clock::now();
auto SolveDuration = std::chrono::duration_cast<std::chrono::microseconds>( t2 - t1 ).count();
//Output results.
if (opts->verbose) {
std::cout << "Stats:\n";
std::cout << " Initial Lit count = " << var_count << "\n";
std::cout << " Initial SDD size = " << SddSize << "\n";
std::cout << " Initial SDD count = " << SddCount << "\n";
std::cout << " Final manager size = " << sdd_manager_size(m) << "\n";
std::cout << " Time to build = " << SddDuration << "\n";
std::cout << " Time to solve = " << SolveDuration << "\n";
std::cout << " Total time = " << SddDuration + SolveDuration << "\n\n";
}
if (opts->satisfying) {
if (!isSat) std::cout << "Psi is not satisfiable!\n";
else std::cout << "Psi is satisfiable!\n";
}
else {
if (!isSat) std::cout << "Psi is valid!\n";
else std::cout << "Psi is not valid!\n";
}
//Finish up.
sdd_manager_free(m);
return 0;
}
