Check contracts with ESBMC's native CBMC goto reader - #710
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ESBMC 7.10 segfaults reading goto-transcoder's output for contracts built by Kani main (CBMC 6.11). ESBMC v8.5 reads Kani's .out files directly, so drop the transcoder and library.goto, and find the .out files under either Cargo layout (debug/deps or debug/build/PKG/HASH/out). Fixes model-checking#708
If no listed file has an _RNv entry point, or all of them are excluded, the loop never runs ESBMC and the job used to exit 0. Count the checked contracts and exit 1 when there are none.
ESBMC runs inside a loop that reads the contract list from stdin. A release that read stdin would consume the rest of the list after the first contract, and the job would pass with only one contract checked.
lucasccordeiro
marked this pull request as draft
October 3, 2026 08:23
lucasccordeiro
marked this pull request as ready for review
October 3, 2026 16:17
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ESBMC 7.10 segfaults reading goto-transcoder's output for contracts built by Kani
main. ESBMC v8.5 reads Kani's.outfiles directly, sorun-goto-transcoder.shnow runsesbmc --binary <x>.out --function <harness>and no longer needs the transcoder orlibrary.goto. It also finds the.outfiles under bothdebug/depsanddebug/build/PKG/HASH/out(#707), and fails if no contract was checked.Tested on the
checked_unchecked_mul_{i8,u8,i16,u16}contracts from Kanimainwith--keep-temps --only-codegen: ESBMC v8.5 verifies all four, matching Kani, while 7.10 segfaults on each.Resolves #708
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