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A raw polymorphic `Array.init` (e.g. from `subarray256 x i = Array256.init (fun k => x.[256*i+k])`) had no circuit binding: only the monomorphic `ainit` wrapper is bindable, since `bind op`/`ainit` fixes the element width at bind time. So a spec built on `Array.init` fell into the reduce-on-demand fallback -- full reduction per element access -- which could take minutes to translate a single postcondition. Add a `painit` bv-operator kind that binds an array `init` BY PATH while leaving the element lane-width polymorphic; the width is resolved from the concrete components when the operator is translated at a concrete element type.
Gustavo2622
approved these changes
Jul 10, 2026
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A raw polymorphic
Array.init(e.g. fromsubarray256 x i = Array256.init (fun k => x.[256*i+k])) had no circuit binding: only themonomorphic
ainitwrapper is bindable, sincebind op/ainitfixes theelement width at bind time. So a spec built on
Array.initfell into thereduce-on-demand fallback -- full reduction per element access -- which
could take minutes to translate a single postcondition.
Add a
painitbv-operator kind that binds an arrayinitBY PATH whileleaving the element lane-width polymorphic; the width is resolved from the
concrete components when the operator is translated at a concrete element
type.