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e286da46f7
This PR: - Removes the `acc_next` columns, which were only needed because of a limitation of prover functions. The prover function that existed is now removed entirely, because we use the hand written witgen anyway, see #2191. - Also this PR materializes the folded tuple. This lowers the degree of the constraints if the tuples being sent have a degree > 1. It also enables next references in the tuple being sent. As a result, we can now generate Plonky3 proofs with a bus! ```bash cargo run -r --features plonky3 --bin powdr-rs compile riscv/tests/riscv_data/keccak -o output --max-degree-log 18 --field gl cargo run -r --features plonky3 pil output/keccak.asm -o output -f --field gl --prove-with plonky3 --linker-mode bus ``` The proof generation takes 8.32s (of which 394ms are spent on generating the second-stage witness). This compares to 2.07s proof time without a bus.