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5 <h1>Range predicates</h1>
8 <span class="comment">/*
9 * Do not access members directly, use the functions!
10 * A non-empty range has @lob <= @upb.
11 * An empty range has @lob == @upb + 1.
17 predicate valid_range(struct Range range) =
18 range.lob <= range.upb + 1;
20 predicate empty_range(struct Range range) =
21 range.lob == range.upb + 1;