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- Length axiom generation: concat decomposition, unit=1, empty=0, string=k - Bidirectional len(x)=0 <-> x="" axioms - check_zero_length: propagate zero-length variables to empty - propagate_length_eqs: equate lengths of equation sides - Fixed canonize: decompose structurally first, then follow e-graph roots Prevents both equation sides resolving to same root expression - Fixed branch_var_prefix: skip cyclic candidates (containing variable itself) and ground candidates with wrong length - check_length_conflict prevents e-graph corruption from incompatible merges - Fresh value pinning for model generation (m_fresh_values) - Regression: 36/62 correct, 0 wrong, 26 unknown on string-concat.smt2 Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> |
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| .. | ||
| ClemensTableau.pdf | ||
| LazyMemberships.pdf | ||
| log.txt | ||
| plan.md | ||
| reference.md | ||