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maude: Phase 5 system modules + rewrite rules (21 tests, 159 total)
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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>
This commit is contained in:
giles
2026-06-07 15:23:06 +00:00
parent 1747bbd944
commit 858d35a68c
8 changed files with 692 additions and 12 deletions
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lib/maude/scoreboard.md
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@@ -1,6 +1,6 @@
# maude scoreboard
**138 / 138 passing** (0 failure(s)).
**159 / 159 passing** (0 failure(s)).
| Suite | Passed | Total | Status |
|-------|--------|-------|--------|
@@ -8,3 +8,4 @@
| reduce | 26 | 26 | ok |
| matching | 28 | 28 | ok |
| conditional | 19 | 19 | ok |
| rewrite | 21 | 21 | ok |