Logichard
0:00.0

In the DPLL algorithm for propositional satisfiability, Unit Propagation is recursively applied to simplify clauses. Consider the CNF formula: ϕ=(¬PQ)(¬QR)(¬RS)(¬S¬P)(PT)\phi = (\neg P \lor Q) \land (\neg Q \lor R) \land (\neg R \lor S) \land (\neg S \lor \neg P) \land (P \lor T) If we branch by setting the decision literal P=TrueP = \text{True}, which of the following describes the sequence of forced assignments and the immediate result of Unit Propagation?