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Basic case splitting algorithm
1 2 3 4 5 6 7 8 (¬b + ¬c + ¬d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + d) (¬b + ¬c + ¬d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + d) (¬b + ¬c + ¬d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + d) (¬b + ¬c + ¬d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + d) (¬b + ¬c + ¬d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + d) (¬b + ¬c + ¬d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + d) (¬b + ¬c + ¬d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + d) (¬b + ¬c + ¬d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + d) (¬b + ¬c + ¬d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + d) (¬b + ¬c + ¬d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + d) (¬b + ¬c + ¬d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + d) (¬b + ¬c + ¬d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + d) (¬b + ¬c + ¬d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + d) (¬b + ¬c + ¬d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + d) (¬b + ¬c + ¬d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + d) (¬b + ¬c + ¬d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + d) (¬b + ¬c + ¬d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + d) (¬b + ¬c + ¬d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + d) (¬b + ¬c + ¬d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + d) (¬b + ¬c + ¬d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + d) (¬b + ¬c + ¬d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + d) (¬b + ¬c + ¬d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + d) (¬b + ¬c + ¬d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + d) (¬b + ¬c + ¬d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + d) (¬b + ¬c + ¬d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + d) (¬b + ¬c + ¬d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + d) (¬b + ¬c + ¬d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + d) (¬b + ¬c + ¬d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) (¬b + ¬c + ¬d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) (¬b + ¬c + ¬d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + d) (¬b + ¬c + ¬d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) a b b c c c d d d d d Source: Karem A. Sakallah, Univ. of Michigan
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Case splitting with implications
1 2 3 4 5 6 7 8 (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) a b b c c d 4 a c d 7 b c d 5 a c c 3 a b 6 8 6 5 d Source: Karem A. Sakallah, Univ. of Michigan
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Conflict-based learning
1 2 3 4 5 6 7 8 (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) 9 (¬b + ¬c) 11 (¬a) 10 (¬a + ¬b) 9 (¬b + ¬c) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) 10 (¬a + ¬b) 9 (¬b + ¬c) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) 10 (¬a + ¬b) 9 (¬b + ¬c) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) 9 (¬b + ¬c) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) 10 (¬a + ¬b) 9 (¬b + ¬c) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) 10 (¬a + ¬b) 9 (¬b + ¬c) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) 9 (¬b + ¬c) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) 10 (¬a + ¬b) 9 (¬b + ¬c) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) 9 (¬b + ¬c) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) 11 (¬a) 10 (¬a + ¬b) 9 (¬b + ¬c) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) 11 (¬a) 10 (¬a + ¬b) 9 (¬b + ¬c) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) 11 (¬a) 10 (¬a + ¬b) 9 (¬b + ¬c) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) 11 (¬a) 10 (¬a + ¬b) 9 (¬b + ¬c) (a + b + c) (a + b + ¬c) (¬a + b + ¬c) (a + c + d) (¬a + c + d) (¬a + c + ¬d) (¬b + ¬c + ¬d) (¬b + ¬c + d) 9 (¬b + ¬c) a 10 (¬a + ¬b) bc ® ¬j ß j ® (¬b + ¬c) a ® ¬j ß j ® (¬a) ab ® ¬j ß j ® (¬a + ¬b) b b 11 (¬a) c a 11 b a 10 6 c 9 b d 7 b c 6 d 5 8 4 d a d 5 c 3 b 9 c Source: Karem A. Sakallah, Univ. of Michigan
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