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lib/maude/rewrite.sx: rl/crl transitions interleaved with eq normalisation. mau/rewrite = default strategy (top-down, leftmost-outermost, first rule); mau/rew bounded; mau/search = BFS reachability over all successors. lib/maude/fire.sx: short-circuiting matcher (mau/fire-eq) — finds the first productive match instead of enumerating the whole solution set. Fixes the exponential blowup of AC rewriting on many identical elements (8 coins: 60s+ to <1s). Eager match-multiset kept only for match-all / search. Verified on AC coin-change, traffic light, branching search, crl clock. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>