void
VarCode::reduce()
{
if (!code->mark) { // first time at this node?
code->mark = true;
switch (phase) { // reduce node
case 1:
code->reduce1(); // local reductions + projection reduction
break;
case 2:
code->reduce2(); // and reduction
break;
}
if (!code->forwarded.code) { // if not already forwarded...
Code *c = codeTable->findEquiv(code);
if (c) { // ...but isomorphic to some other node
c->refs++; // (because sub-nodes have changed)
code->forwarded = VarCode(code->vars.copy(), c); // forward to other
}
}
}
if (code->forwarded.code) { // redirect if forwarded
VarCode old = *this;
vars = subst(code->forwarded.vars, &code->vars, vars); // update vars
vars->compress();
code = code->forwarded.code;
code->refs++;
old.remove(); // remove reference to old node
reduce(); // again (so that sub-nodes always have been processed)
}
invariant(vars->size() == code->vars.size());
invariant(!code->forwarded.code); // no successive forwarding
}
int
main(int argc, char *argv[])
{
std::set_new_handler(&mem_error);
if (!ParseArguments(argc, argv)) {
Usage();
exit(-1);
}
// Disable core dump
struct rlimit r_core;
r_core.rlim_cur = 0;
r_core.rlim_max = 0;
setrlimit(RLIMIT_CORE, &r_core);
// Set demo limits
if (options.demo) {
struct rlimit r_cpu, r_as;
memlimit = true;
r_cpu.rlim_cur = 30; // max 30 secs.
r_cpu.rlim_max = 30;
setrlimit(RLIMIT_CPU, &r_cpu);
r_as.rlim_cur = 20971520; // max 20MB
r_as.rlim_max = 20971520;
setrlimit(RLIMIT_DATA, &r_as);
signal(SIGXCPU, &cpuLimit);
}
initTimer();
Timer timer_total;
timer_total.start();
///////// PARSING ////////////////////////////////////////////////////////
if (options.printProgress)
cout << "MONA v" << VERSION << "-" << RELEASE << " for WS1S/WS2S\n"
"Copyright (C) 1997-2008 BRICS\n\n"
"PARSING\n";
Timer timer_parsing;
timer_parsing.start();
loadFile(inputFileName);
yyparse();
MonaAST *ast = untypedAST->typeCheck();
lastPosVar = ast->lastPosVar;
allPosVar = ast->allPosVar;
timer_parsing.stop();
if (options.printProgress) {
cout << "Time: ";
timer_parsing.print();
}
delete untypedAST;
if (options.dump) {
// Dump AST for main formula, verify formulas, and assertion
cout << "Main formula:\n";
(ast->formula)->dump();
Deque<ASTForm *>::iterator vf;
Deque<char *>::iterator vt;
for (vf = ast->verifyformlist.begin(), vt = ast->verifytitlelist.begin();
vf != ast->verifyformlist.end(); vf++, vt++) {
cout << "\n\nFormula " << *vt << ":\n";
(*vf)->dump();
}
cout << "\n\nAssertions:\n";
(ast->assertion)->dump();
cout << "\n";
if (lastPosVar != -1)
cout << "\nLastPos variable: "
<< symbolTable.lookupSymbol(lastPosVar) << "\n";
if (allPosVar != -1)
cout << "\nAllPos variable: "
<< symbolTable.lookupSymbol(allPosVar) << "\n";
// Dump ASTs for predicates and macros
PredLibEntry *pred = predicateLib.first();
while (pred != NULL) {
if (pred->isMacro)
cout << "\nMacro '";
else
cout << "\nPredicate '";
cout << symbolTable.lookupSymbol(pred->name)
<< "':\n";
(pred->ast)->dump();
cout << "\n";
pred = predicateLib.next();
}
// Dump restrictions
if (symbolTable.defaultRestriction1) {
cout << "\nDefault first-order restriction ("
<< symbolTable.lookupSymbol(symbolTable.defaultIdent1) << "):\n";
symbolTable.defaultRestriction1->dump();
cout << "\n";
}
if (symbolTable.defaultRestriction2) {
cout << "\nDefault second-order restriction ("
<< symbolTable.lookupSymbol(symbolTable.defaultIdent2) << "):\n";
symbolTable.defaultRestriction2->dump();
cout << "\n";
}
Ident id;
for (id = 0; id < (Ident) symbolTable.noIdents; id++) {
Ident t;
ASTForm *f = symbolTable.getRestriction(id, &t);
if (f) {
cout << "\nRestriction for #" << id << " ("
<< symbolTable.lookupSymbol(id) << "):";
if (t != -1)
cout << " default\n";
else {
cout << "\n";
f->dump();
cout << "\n";
}
}
}
}
if (options.mode != TREE &&
(options.graphvizSatisfyingEx || options.graphvizCounterEx ||
options.inheritedAcceptance))
cout << "Warning: options -gc, -gs, and -h are only used in tree mode\n";
if (options.mode == TREE && options.graphvizDFA)
cout << "Warning: option -gw is only used in linear mode\n";
if (options.mode == TREE && (options.dump || options.whole) &&
!options.externalWhole)
printGuide();
///////// CODE GENERATION ////////////////////////////////////////////////
if (options.printProgress)
cout << "\nCODE GENERATION\n";
Timer timer_gencode;
timer_gencode.start();
// Generate code
codeTable = new CodeTable;
VarCode formulaCode = ast->formula->makeCode();
VarCode assertionCode = ast->assertion->makeCode();
Deque<VarCode> verifyCode;
/* #warning NEW: 'VERIFY' */
for (Deque<ASTForm *>::iterator i = ast->verifyformlist.begin();
i != ast->verifyformlist.end(); i++)
verifyCode.push_back((*i)->makeCode());
// Implicitly assert restrictions for all global variables
for (IdentList::iterator i = ast->globals.begin();
i != ast->globals.end(); i++)
assertionCode = andList(assertionCode, getRestriction(*i, NULL));
// Restrict assertion if not trivial
if (assertionCode.code->kind != cTrue)
assertionCode = codeTable->insert
(new Code_Restrict(assertionCode, assertionCode.code->pos));
// Add assertion to main formula and to all verify formulas
for (Deque<VarCode>::iterator i = verifyCode.begin();
i != verifyCode.end(); i++) {
assertionCode.code->refs++;
*i = andList(*i, VarCode(copy(assertionCode.vars), assertionCode.code));
}
formulaCode = andList(formulaCode, assertionCode);
timer_gencode.stop();
if (options.printProgress) {
codeTable->print_statistics();
/* if (options.dump && options.statistics)
codeTable->print_sizes(); */
cout << "Time: ";
timer_gencode.print();
}
///////// REORDER BDD OFFSETS ////////////////////////////////////////////
if (options.reorder >= 1) {
Timer timer_reorder;
timer_reorder.start();
if (options.printProgress)
cout << "\nREORDERING\n";
// reorder using heuristics
offsets.reorder();
// regenerate DAG in new codetable
CodeTable *oldCodeTable = codeTable, *newCodeTable = new CodeTable;
IdentList emptylist;
codeTable = newCodeTable;
regenerate = true; // force making new nodes
VarCode newcode = formulaCode.substCopy(&emptylist, &emptylist);
Deque<VarCode> newverifycode;
for (Deque<VarCode>::iterator i = verifyCode.begin();
i != verifyCode.end(); i++)
newverifycode.push_back((*i).substCopy(&emptylist, &emptylist));
codeTable->clearSCTable();
regenerate = false;
codeTable = oldCodeTable;
formulaCode.remove();
for (Deque<VarCode>::iterator i = verifyCode.begin();
i != verifyCode.end(); i++)
(*i).remove();
formulaCode = newcode;
verifyCode.reset();
for (Deque<VarCode>::iterator i = newverifycode.begin();
i != newverifycode.end(); i++)
verifyCode.push_back(*i);
delete oldCodeTable;
codeTable = newCodeTable;
if (options.printProgress) {
codeTable->print_statistics2();
cout << "Time: ";
timer_reorder.print();
}
}
///////// REDUCTION AND CODE DUMPING /////////////////////////////////////
if (options.optimize >= 1) {
if (options.printProgress)
cout << "\nREDUCTION\n";
Timer timer_reduction;
timer_reduction.start();
// Reduce
formulaCode.reduceAll(&verifyCode);
timer_reduction.stop();
if (options.printProgress) {
codeTable->print_reduction_statistics();
/* if (options.dump && options.statistics)
codeTable->print_sizes(); */
cout << "Time: ";
timer_reduction.print();
}
}
if (options.dump) {
// Dump symboltable
symbolTable.dump();
// Dump code
cout << "\nMain formula:\n";
formulaCode.dump();
cout << "\n\n";
Deque<VarCode>::iterator i;
Deque<char *>::iterator j;
for (i = verifyCode.begin(), j = ast->verifytitlelist.begin();
i != verifyCode.end(); i++, j++) {
cout << "Formula " << *j << ":\n";
(*i).dump();
cout << "\n\n";
}
}
if (options.graphvizDAG) {
printf("digraph MONA_CODE_DAG {\n"
" size = \"7.5,10.5\";\n"
" main [shape = plaintext];\n"
" main -> L%lx;\n",
(unsigned long) formulaCode.code);
formulaCode.code->viz();
Deque<VarCode>::iterator i;
Deque<char *>::iterator j;
for (i = verifyCode.begin(), j = ast->verifytitlelist.begin();
i != verifyCode.end(); i++, j++) {
printf(" \"%s\" [shape = plaintext];\n"
" \"%s\" -> L%lx;\n",
*j, *j, (unsigned long) (*i).code);
(*i).code->viz();
}
formulaCode.unmark();
for (Deque<VarCode>::iterator i = verifyCode.begin();
i != verifyCode.end(); i++)
(*i).unmark();
cout << "}\n";
}
///////// AUTOMATON CONSTRUCTION /////////////////////////////////////////
// Make variable lists
Deque<char *> *verifytitlelist = ast->verifytitlelist.copy();
if (lastPosVar != -1)
ast->globals.remove(lastPosVar);
if (allPosVar != -1)
ast->globals.remove(allPosVar);
ast->globals.sort(); // sort by id (= index)
int numVars = ast->globals.size();
int ix = 0;
char **vnames = new char*[numVars];
unsigned *offs = new unsigned[numVars];
char *types = new char[numVars];
int **univs = new int*[numVars];
int *trees = new int[numVars];
SSSet *statespaces = new SSSet[numVars];
IdentList sign, freeVars;
IdentList::iterator id;
for (id = ast->globals.begin(); id != ast->globals.end(); id++, ix++) {
statespaces[ix] = stateSpaces(*id);
vnames[ix] = symbolTable.lookupSymbol(*id);
offs[ix] = offsets.off(*id);
sign.push_back(ix);
freeVars.push_back(*id);
switch (symbolTable.lookupType(*id)) {
case VarnameTree:
trees[ix] = 1;
break;
default:
trees[ix] = 0;
}
IdentList *uu = symbolTable.lookupUnivs(*id);
if (uu) {
unsigned j;
univs[ix] = new int[uu->size()+1];
for (j = 0; j < uu->size(); j++)
univs[ix][j] = symbolTable.lookupUnivNumber(uu->get(j));
univs[ix][j] = -1;
}
else
univs[ix] = 0;
switch (symbolTable.lookupType(*id))
{
case Varname0:
types[ix] = 0;
break;
case Varname1:
types[ix] = 1;
break;
default:
types[ix] = 2;
break;
}
}
if (options.printProgress)
cout << "\nAUTOMATON CONSTRUCTION\n";
Timer timer_automaton;
timer_automaton.start();
DFA *dfa = 0;
Deque<DFA *> dfalist;
GTA *gta = 0;
Deque<GTA *> gtalist;
// Initialize
bdd_init();
codeTable->init_print_progress();
if (options.mode != TREE) {
// Generate DFAs
dfa = formulaCode.DFATranslate();
if (lastPosVar != -1)
dfa = st_dfa_lastpos(dfa, lastPosVar);
if (allPosVar != -1)
dfa = st_dfa_allpos(dfa, allPosVar);
for (Deque<VarCode>::iterator i = verifyCode.begin();
i != verifyCode.end(); i++) {
DFA *d = (*i).DFATranslate();
if (lastPosVar != -1)
d = st_dfa_lastpos(d, lastPosVar);
if (allPosVar != -1)
d = st_dfa_allpos(d, allPosVar);
dfalist.push_back(d);
}
}
else {
// Generate GTAs
gta = formulaCode.GTATranslate();
if (allPosVar != -1)
gta = st_gta_allpos(gta, allPosVar);
for (Deque<VarCode>::iterator i = verifyCode.begin();
i != verifyCode.end(); i++) {
GTA *g = (*i).GTATranslate();
if (allPosVar != -1)
g = st_gta_allpos(g, allPosVar);
gtalist.push_back(g);
}
}
formulaCode.remove();
for (Deque<VarCode>::iterator i = verifyCode.begin();
i != verifyCode.end(); i++)
(*i).remove();
timer_automaton.stop();
if (options.printProgress) {
if (options.statistics)
cout << "Total automaton construction time: ";
else
cout << "Time: ";
timer_automaton.print();
}
delete ast;
delete codeTable;
///////// PRINT AUTOMATON ////////////////////////////////////////////////
DFA *dfa2 = dfa;
GTA *gta2 = gta;
Deque<DFA *> *dfalist2 = &dfalist;
Deque<GTA *> *gtalist2 = >alist;
if (options.whole &&
!options.externalWhole)
cout << "\n";
if (options.unrestrict) {
// Unrestrict automata
if (options.mode != TREE) {
DFA *t = dfaCopy(dfa2);
dfaUnrestrict(t);
dfa2 = dfaMinimize(t);
dfaFree(t);
dfalist2 = new Deque<DFA *>;
for (Deque<DFA *>::iterator i = dfalist.begin(); i != dfalist.end(); i++) {
t = dfaCopy(*i);
dfaUnrestrict(t);
dfalist2->push_back(dfaMinimize(t));
dfaFree(t);
}
}
else {
GTA *t = gtaCopy(gta2);
gtaUnrestrict(t);
gta2 = gtaMinimize(t);
gtaFree(t);
gtalist2 = new Deque<GTA *>;
for (Deque<GTA *>::iterator i = gtalist.begin(); i != gtalist.end(); i++) {
t = gtaCopy(*i);
gtaUnrestrict(t);
gtalist2->push_back(gtaMinimize(t));
gtaFree(t);
}
}
}
if (options.whole)
// Print whole automaton
if (options.mode != TREE) {
if (options.externalWhole) {
if (!dfalist.empty())
cout << "Main formula:\n";
DFA *t = dfaCopy(dfa2);
st_dfa_replace_indices(t, &sign, &freeVars, false, true);
dfaExport(t, 0, numVars, vnames, types);
dfaFree(t);
Deque<DFA *>::iterator i;
Deque<char *>::iterator j;
for (i = dfalist2->begin(), j = verifytitlelist->begin();
i != dfalist2->end(); i++, j++) {
cout << "\nFormula " << *j << ":\n";
t = dfaCopy(*i);
st_dfa_replace_indices(t, &sign, &freeVars, false, true);
dfaExport(t, 0, numVars, vnames, types);
dfaFree(t);
}
}
else if (options.graphvizDFA) {
dfaPrintGraphviz(dfa2, numVars, offs);
for (Deque<DFA *>::iterator i = dfalist2->begin(); i != dfalist2->end(); i++)
dfaPrintGraphviz(*i, numVars, offs);
}
else {
if (!dfalist.empty())
cout << "Main formula:\n";
dfaPrint(dfa2, numVars, vnames, offs);
Deque<DFA *>::iterator i;
Deque<char *>::iterator j;
for (i = dfalist2->begin(), j = verifytitlelist->begin();
i != dfalist2->end(); i++, j++) {
cout << "\nFormula " << *j << ":\n";
dfaPrint(*i, numVars, vnames, offs);
}
}
}
else {
if (options.externalWhole) {
if (!gtalist.empty())
cout << "Main formula:\n";
GTA *t = gtaCopy(gta2);
st_gta_replace_indices(t, &sign, &freeVars, false, true);
gtaExport(t, 0, numVars, vnames, types, statespaces,
options.inheritedAcceptance);
gtaFree(t);
Deque<GTA *>::iterator i;
Deque<char *>::iterator j;
for (i = gtalist2->begin(), j = verifytitlelist->begin();
i != gtalist2->end(); i++, j++) {
cout << "\nFormula " << *j << ":\n";
t = gtaCopy(*i);
st_gta_replace_indices(t, &sign, &freeVars, false, true);
gtaExport(t, 0, numVars, vnames, types, statespaces,
options.inheritedAcceptance);
gtaFree(t);
}
}
else {
if (!gtalist.empty())
cout << "Main formula:\n";
gtaPrint(gta2, offs, numVars, vnames,
options.inheritedAcceptance);
Deque<GTA *>::iterator i;
Deque<char *>::iterator j;
for (i = gtalist2->begin(), j = verifytitlelist->begin();
i != gtalist2->end(); i++, j++) {
cout << "\nFormula " << *j << ":\n";
gtaPrint(*i, offs, numVars, vnames,
options.inheritedAcceptance);
}
}
}
else if (options.analysis &&
!options.graphvizSatisfyingEx &&
!options.graphvizCounterEx &&
options.printProgress) {
// Print summary only
if (options.mode != TREE) {
if (!dfalist.empty())
cout << "Main formula:";
dfaPrintVitals(dfa2);
Deque<DFA *>::iterator i;
Deque<char *>::iterator j;
for (i = dfalist2->begin(), j = verifytitlelist->begin();
i != dfalist2->end(); i++, j++) {
cout << "\nFormula " << *j << ":";
dfaPrintVitals(*i);
}
}
else {
if (!gtalist.empty())
cout << "Main formula:";
gtaPrintTotalSize(gta2);
Deque<GTA *>::iterator i;
Deque<char *>::iterator j;
for (i = gtalist2->begin(), j = verifytitlelist->begin();
i != gtalist2->end(); i++, j++) {
cout << "\nFormula " << *j << ":";
gtaPrintTotalSize(*i);
}
}
}
if (dfa2 != dfa) {
dfaFree(dfa2);
for (Deque<DFA *>::iterator i = dfalist2->begin(); i != dfalist2->end(); i++)
dfaFree(*i);
delete dfalist2;
}
if (gta2 != gta) {
gtaFree(gta2);
for (Deque<GTA *>::iterator i = gtalist2->begin(); i != gtalist2->end(); i++)
gtaFree(*i);
delete gtalist2;
}
///////// AUTOMATON ANALYSIS /////////////////////////////////////////////
if (options.analysis) {
if (options.printProgress)
cout << "\nANALYSIS\n";
if (options.mode != TREE) {
if (!dfalist.empty())
cout << "Main formula:\n";
dfaAnalyze(dfa, numVars, vnames, offs, types,
options.treemodeOutput);
Deque<DFA *>::iterator i;
Deque<char *>::iterator j;
for (i = dfalist.begin(), j = verifytitlelist->begin();
i != dfalist.end(); i++, j++) {
cout << "\nFormula " << *j << ":\n";
dfaAnalyze(*i, numVars, vnames, offs, types,
options.treemodeOutput);
}
}
else {
if (numTypes == 0 || options.treemodeOutput) {
if (!gtalist.empty())
cout << "Main formula:\n";
gtaAnalyze(gta, numVars, vnames, offs,
options.graphvizSatisfyingEx,
options.graphvizCounterEx);
Deque<GTA *>::iterator i;
Deque<char *>::iterator j;
for (i = gtalist.begin(), j = verifytitlelist->begin();
i != gtalist.end(); i++, j++) {
cout << "\nFormula " << *j << ":\n";
gtaAnalyze(*i, numVars, vnames, offs,
options.graphvizSatisfyingEx,
options.graphvizCounterEx);
}
}
else {
if (options.graphvizSatisfyingEx ||
options.graphvizCounterEx)
cout << "Graphviz output of typed trees not implemented.\n";
if (!gtalist.empty())
cout << "Main formula:\n";
gtaTypeAnalyze(gta, numVars, vnames, types, offs, univs, trees);
Deque<GTA *>::iterator i;
Deque<char *>::iterator j;
for (i = gtalist.begin(), j = verifytitlelist->begin();
i != gtalist.end(); i++, j++) {
cout << "\nFormula " << *j << ":\n";
gtaTypeAnalyze(*i, numVars, vnames, types, offs, univs, trees);
}
}
}
}
///////// CLEAN UP ///////////////////////////////////////////////////////
if (options.mode != TREE) {
dfaFree(dfa);
for (Deque<DFA *>::iterator i = dfalist.begin(); i != dfalist.end(); i++)
dfaFree(*i);
}
else {
gtaFree(gta);
for (Deque<GTA *>::iterator i = gtalist.begin(); i != gtalist.end(); i++)
gtaFree(*i);
freeGuide();
}
delete verifytitlelist;
Deque<FileSource *>::iterator i;
for (i = source.begin(); i != source.end(); i++)
delete *i;
for (ix = 0; ix < numVars; ix++) {
delete[] univs[ix];
mem_free(statespaces[ix]);
}
delete[] statespaces;
delete[] vnames;
delete[] offs;
delete[] types;
delete[] univs;
delete[] trees;
freeTreetypes();
if (options.statistics)
print_statistics();
if (options.time) {
timer_total.stop();
cout << "\nTotal time: ";
timer_total.print();
print_timing();
}
else if (options.printProgress) {
timer_total.stop();
cout << "\nTotal time: ";
timer_total.print();
}
#ifdef MAXALLOCATED
cout << "Maximum space allocated: " << (maxallocated+524288)/1048576 << " MB\n";
#endif
}