}} (we name the tertiary clause c) detected by the first implication graph represented on the left in Fig.8 after the respective propagation of literals l 1 , l 2 , l 3 and l 4 . In the second graph on the left in the same figure, we represent another possible propagation sequence which outlines the possible neighborhood of l 4 , neigh(l 4 ) = {l 1 , l 3 } not containing the empty clause. Clearly, the subset ? = ? \ {{l}} is a 5-UCS recognized by the FUIP l such that c participates in the conflict and |succ(l)| = |c| = 3. The max-resolution transformation of ? with respect to RPO which corresponds to the variable sequence S = var(l 4 ), var(l 3 ), var(l 2 ), var(l 1 ) is represented on the right in Fig.8. Clearly, the References 1, Principles and Practice of Constraint Programming, vol.3, pp.92-107, 2014. ,
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