private RTLExpression addClause(RTLExpression formula, RTLExpression clause) {
if (formula != null) {
return ExpressionFactory.createAnd(formula, clause);
} else {
return clause;
}
}
public RTLExpression getStateFormula(ValuationState state) {
RTLExpression result = null;
for (Iterator<Map.Entry<RTLVariable, AbstractDomainElement>> entryIt = state.variableIterator();
entryIt.hasNext(); ) {
Map.Entry<RTLVariable, AbstractDomainElement> entry = entryIt.next();
RTLVariable var = entry.getKey();
IntervalElement interval = (IntervalElement) entry.getValue();
if (interval.size() == 1) {
result =
addClause(
result,
ExpressionFactory.createEqual(
var, ExpressionFactory.createNumber(interval.getLeft(), var.getBitWidth())));
} else {
if (!interval.leftOpen()) {
result =
addClause(
result,
ExpressionFactory.createLessOrEqual(
ExpressionFactory.createNumber(interval.getLeft(), var.getBitWidth()), var));
}
if (!interval.rightOpen()) {
result =
addClause(
result,
ExpressionFactory.createLessOrEqual(
var, ExpressionFactory.createNumber(interval.getRight(), var.getBitWidth())));
}
}
}
if (result == null) {
result = ExpressionFactory.TRUE;
}
return result;
}