fix(symbolic-spl): decompose multisig signer pubkeys to avoid SMT timeout#1000
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Stevengre merged 1 commit intofeature/p-tokenfrom Mar 24, 2026
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…eout Replace opaque symbolic List variables (?SplSigner0:List etc.) in the cheatcode-is-spl-multisig rule with concrete Lists of 32 individual symbolic Int byte variables via #mkSplPubkey helper. Previously, pubkey comparisons via Processor::cmp_pubkeys produced KEY1 ==K KEY2 where one side was a fully symbolic List. The Haskell backend sent this to Z3 as opaque List equality, which timed out when path constraints accumulated to ~600+. With decomposed byte variables, ==K on two structurally-concrete Lists automatically reduces to element-wise integer equalities (e.g. ?SplSi0B0 ==Int ARG_UINT196 andBool ...), which Z3 solves instantly. Verified: test_process_burn_multisig proof changes from SMT timeout crash (377 nodes) to PASSED (495 nodes, 0 errors). Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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dkcumming
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Nice, glad to see the it is speeding things up. Not sure if this catches all Pubkey instances but we can keep an eye out and see if the proofs are handing on any, and at one point we will do a general clean up I think and see if anything is missed.
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Summary
?SplSigner0:Listetc.) incheatcode-is-spl-multisiginto concrete Lists of 32 individual symbolic Int byte variables via new#mkSplPubkey/#pubkeyByteBoundshelpersKEY1 ==K KEY2) with a fully symbolic List side were sent to Z3 as opaque List equality, causing SMT timeout when path constraints accumulated to ~600+==Kautomatically reduces to element-wise integer equalities (e.g.?SplSi0B0 ==Int ARG_UINT196 andBool ...), which Z3 solves instantlyVerification
test_process_burn_multisig