CBMC: Remove `MLD_UNION_OR_STRUCT` workaround by mkannwischer · Pull Request #1016 · pq-code-package/mldsa-native

mkannwischer · 2026-04-03T11:44:35Z

No description provided.

oqs-bot · 2026-04-03T14:14:46Z

CBMC Results (ML-DSA-44)

Full Results (186 proofs)

Proof	Status	Current	Previous	Change
`TOTAL`	✅	1980s	2347s	-15.6%
`polyvecl_pointwise_acc_montgomery_c`	✅	350s	381s	-8%
`poly_pointwise_montgomery_c`	✅	156s	164s	-5%
`sign_verify_internal`	✅	155s	168s	-8%
`rej_uniform_native`	✅	147s	153s	-4%
`mld_invntt_layer`	✅	132s	120s	+10%
`mld_ct_memcmp`	✅	70s	80s	-12%
`mld_attempt_signature_generation`	✅	59s	291s	-80%
`mld_ntt_layer`	✅	52s	56s	-7%
`polymat_permute_bitrev_to_custom`	✅	30s	32s	-6%
`sign_signature_internal`	✅	21s	21s	+0%
`poly_chknorm_c`	✅	20s	20s	+0%
`rej_uniform`	✅	20s	22s	-9%
`fqmul`	✅	18s	17s	+6%
`polyvec_matrix_expand`	✅	18s	23s	-22%
`polyeta_unpack`	✅	17s	19s	-11%
`poly_uniform_eta_4x`	✅	16s	16s	+0%
`polyt0_unpack`	✅	16s	16s	+0%
`poly_uniform_4x`	✅	14s	13s	+8%
`rej_uniform_c`	✅	13s	16s	-19%
`keccakf1600x4_permute_native`	✅	12s	13s	-8%
`mld_compute_t0_t1_tr_from_sk_components`	✅	12s	13s	-8%
`keccak_absorb_once_x4`	✅	11s	8s	+38%
`poly_add`	✅	11s	11s	+0%
`polyz_unpack_c`	✅	11s	11s	+0%
`mld_check_pct`	✅	10s	13s	-23%
`mld_ntt_butterfly_block`	✅	10s	13s	-23%
`poly_decompose_c`	✅	9s	2s	+350%
`polyvec_matrix_pointwise_montgomery`	✅	9s	9s	+0%
`keccakf1600_permute`	✅	8s	7s	+14%
`keccakf1600_permute_native`	✅	8s	6s	+33%
`mld_compute_pack_z`	✅	8s	7s	+14%
`polyveck_add`	✅	8s	5s	+60%
`sign`	✅	8s	6s	+33%
`unpack_sk`	✅	8s	6s	+33%
`mld_polyvecl_permute_bitrev_to_custom_native`	✅	7s	11s	-36%
`polyveck_ntt`	✅	7s	5s	+40%
`keccak_absorb`	✅	6s	8s	-25%
`keccak_squeezeblocks_x4`	✅	6s	7s	-14%
`mld_prepare_domain_separation_prefix`	✅	6s	5s	+20%
`mld_sample_s1_s2`	✅	6s	3s	+100%
`pointwise_acc_native_x86_64`	✅	6s	5s	+20%
`poly_invntt_tomont_native`	✅	6s	3s	+100%
`polyveck_caddq`	✅	6s	6s	+0%
`polyveck_power2round`	✅	6s	6s	+0%
`polyveck_shiftl`	✅	6s	4s	+50%
`polyveck_sub`	✅	6s	4s	+50%
`rej_eta_native`	✅	6s	6s	+0%
`shake256_init`	✅	6s	3s	+100%
`sign_pk_from_sk`	✅	6s	6s	+0%
`sign_signature_extmu`	✅	6s	2s	+200%
`unpack_hints`	✅	6s	5s	+20%
`intt_native_x86_64`	✅	5s	5s	+0%
`keccakf1600_xor_bytes`	✅	5s	1s	+400%
`mld_sample_s1_s2_serial`	✅	5s	3s	+67%
`poly_ntt_c`	✅	5s	3s	+67%
`poly_sub`	✅	5s	3s	+67%
`poly_uniform_eta`	✅	5s	4s	+25%
`polyvec_matrix_expand_serial`	✅	5s	22s	-77%
`polyveck_pack_eta`	✅	5s	3s	+67%
`polyveck_pointwise_poly_montgomery`	✅	5s	2s	+150%
`polyvecl_permute_bitrev_to_custom`	✅	5s	3s	+67%
`polyz_pack`	✅	5s	3s	+67%
`shake256_squeeze`	✅	5s	3s	+67%
`sign_keypair_internal`	✅	5s	6s	-17%
`sign_signature_pre_hash_internal`	✅	5s	5s	+0%
`unpack_pk`	✅	5s	2s	+150%
`decompose`	✅	4s	3s	+33%
`keccak_f1600_x1_native_aarch64`	✅	4s	2s	+100%
`keccakf1600x4_extract_bytes`	✅	4s	2s	+100%
`make_hint`	✅	4s	3s	+33%
`mld_ct_cmask_neg_i32`	✅	4s	3s	+33%
`mld_h`	✅	4s	4s	+0%
`ntt_native_x86_64`	✅	4s	3s	+33%
`pack_sig_h_poly`	✅	4s	2s	+100%
`pack_sk`	✅	4s	3s	+33%
`pointwise_acc_native_aarch64`	✅	4s	6s	-33%
`poly_caddq_c`	✅	4s	6s	-33%
`poly_caddq_native_aarch64`	✅	4s	6s	-33%
`poly_challenge`	✅	4s	5s	-20%
`poly_chknorm`	✅	4s	6s	-33%
`poly_chknorm_native_aarch64`	✅	4s	2s	+100%
`poly_invntt_tomont_c`	✅	4s	26s	-85%
`poly_pointwise_montgomery_native`	✅	4s	2s	+100%
`poly_power2round`	✅	4s	8s	-50%
`polyveck_chknorm`	✅	4s	4s	+0%
`polyveck_decompose`	✅	4s	5s	-20%
`polyveck_reduce`	✅	4s	4s	+0%
`polyw1_pack`	✅	4s	4s	+0%
`power2round`	✅	4s	5s	-20%
`shake128_init`	✅	4s	5s	-20%
`sign_keypair`	✅	4s	5s	-20%
`sign_open`	✅	4s	6s	-33%
`sign_signature_pre_hash_shake256`	✅	4s	3s	+33%
`sign_verify_extmu`	✅	4s	3s	+33%
`sign_verify_pre_hash_internal`	✅	4s	3s	+33%
`sys_check_capability`	✅	4s	5s	-20%
`caddq`	✅	3s	3s	+0%
`fqscale`	✅	3s	3s	+0%
`keccak_f1600_x4_native_aarch64_v8a_v84a_scalar_hybrid`	✅	3s	6s	-50%
`keccakf1600_extract_bytes (big endian)`	✅	3s	3s	+0%
`keccakf1600_xor_bytes (big endian)`	✅	3s	2s	+50%
`keccakf1600x4_permute`	✅	3s	3s	+0%
`mld_ct_abs_i32`	✅	3s	3s	+0%
`mld_ct_cmask_nonzero_u32`	✅	3s	2s	+50%
`mld_ct_cmask_nonzero_u8`	✅	3s	3s	+0%
`mld_ct_get_optblocker_i64`	✅	3s	2s	+50%
`mld_ct_get_optblocker_u32`	✅	3s	2s	+50%
`pack_pk`	✅	3s	4s	-25%
`pack_sig_c`	✅	3s	2s	+50%
`poly_caddq`	✅	3s	4s	-25%
`poly_caddq_native`	✅	3s	2s	+50%
`poly_chknorm_native`	✅	3s	3s	+0%
`poly_decompose`	✅	3s	3s	+0%
`poly_decompose_native`	✅	3s	2s	+50%
`poly_ntt_native`	✅	3s	2s	+50%
`poly_pointwise_montgomery`	✅	3s	5s	-40%
`poly_reduce`	✅	3s	3s	+0%
`poly_shiftl`	✅	3s	2s	+50%
`poly_uniform`	✅	3s	5s	-40%
`poly_uniform_gamma1_4x`	✅	3s	5s	-40%
`poly_use_hint_c`	✅	3s	5s	-40%
`poly_use_hint_native`	✅	3s	4s	-25%
`polyt0_pack`	✅	3s	6s	-50%
`polyt1_unpack`	✅	3s	5s	-40%
`polyveck_invntt_tomont`	✅	3s	4s	-25%
`polyveck_pack_w1`	✅	3s	3s	+0%
`polyveck_use_hint`	✅	3s	6s	-50%
`polyvecl_chknorm`	✅	3s	4s	-25%
`polyvecl_ntt`	✅	3s	5s	-40%
`polyvecl_uniform_gamma1_serial`	✅	3s	4s	-25%
`polyvecl_unpack_eta`	✅	3s	2s	+50%
`polyvecl_unpack_z`	✅	3s	4s	-25%
`polyz_unpack`	✅	3s	3s	+0%
`polyz_unpack_native`	✅	3s	3s	+0%
`reduce32`	✅	3s	3s	+0%
`rej_eta_c`	✅	3s	4s	-25%
`shake128_absorb`	✅	3s	2s	+50%
`shake128_finalize`	✅	3s	2s	+50%
`shake128_release`	✅	3s	1s	+200%
`shake128_squeeze`	✅	3s	5s	-40%
`shake256`	✅	3s	4s	-25%
`sign_verify`	✅	3s	5s	-40%
`sign_verify_pre_hash_shake256`	✅	3s	2s	+50%
`unpack_sig`	✅	3s	2s	+50%
`keccak_f1600_x1_native_aarch64_v84a`	✅	2s	2s	+0%
`keccak_f1600_x4_native_aarch64_v84a`	✅	2s	2s	+0%
`keccak_finalize`	✅	2s	4s	-50%
`mld_ct_get_optblocker_u8`	✅	2s	2s	+0%
`mld_ct_sel_int32`	✅	2s	3s	-33%
`mld_keccakf1600_extract_bytes`	✅	2s	1s	+100%
`mld_value_barrier_i64`	✅	2s	2s	+0%
`montgomery_reduce`	✅	2s	4s	-50%
`ntt_native_aarch64`	✅	2s	3s	-33%
`pack_sig_z`	✅	2s	5s	-60%
`pointwise_native_aarch64`	✅	2s	3s	-33%
`poly_invntt_tomont`	✅	2s	2s	+0%
`poly_make_hint`	✅	2s	3s	-33%
`poly_ntt`	✅	2s	3s	-33%
`poly_uniform_gamma1`	✅	2s	2s	+0%
`polyeta_pack`	✅	2s	3s	-33%
`polyt1_pack`	✅	2s	6s	-67%
`polyveck_unpack_t0`	✅	2s	1s	+100%
`polyvecl_pointwise_acc_montgomery_native`	✅	2s	2s	+0%
`polyvecl_uniform_gamma1`	✅	2s	5s	-60%
`rej_eta`	✅	2s	4s	-50%
`shake128x4_absorb_once`	✅	2s	4s	-50%
`shake256_absorb`	✅	2s	1s	+100%
`shake256_finalize`	✅	2s	1s	+100%
`shake256x4_absorb_once`	✅	2s	2s	+0%
`shake256x4_squeezeblocks`	✅	2s	2s	+0%
`sign_signature`	✅	2s	6s	-67%
`use_hint`	✅	2s	3s	-33%
`keccak_f1600_x4_native_aarch64_v8a_scalar_hybrid`	✅	1s	3s	-67%
`keccak_init`	✅	1s	4s	-75%
`keccak_squeeze`	✅	1s	4s	-75%
`keccakf1600x4_xor_bytes`	✅	1s	4s	-75%
`mld_value_barrier_u32`	✅	1s	2s	-50%
`mld_value_barrier_u8`	✅	1s	2s	-50%
`pointwise_native_x86_64`	✅	1s	4s	-75%
`poly_use_hint`	✅	1s	3s	-67%
`polyveck_pack_t0`	✅	1s	2s	-50%
`polyveck_unpack_eta`	✅	1s	5s	-80%
`polyvecl_pack_eta`	✅	1s	3s	-67%
`polyvecl_pointwise_acc_montgomery`	✅	1s	4s	-75%
`shake128x4_squeezeblocks`	✅	1s	4s	-75%
`shake256_release`	✅	1s	1s	+0%

oqs-bot · 2026-04-03T14:15:06Z

CBMC Results (ML-DSA-65)

⚠️ Attention Required

Proof	Status	Current	Previous	Change
`mld_invntt_layer`	⚠️	149s	96s	+55%

Full Results (186 proofs)

Proof	Status	Current	Previous	Change
`TOTAL`	✅	2344s	2477s	-5.4%
`sign_verify_internal`	✅	233s	308s	-24%
`polyvecl_pointwise_acc_montgomery_c`	✅	224s	290s	-23%
`poly_pointwise_montgomery_c`	✅	179s	256s	-30%
`rej_uniform_native`	✅	156s	147s	+6%
`mld_invntt_layer`	⚠️	149s	96s	+55%
`polyvec_matrix_expand`	✅	145s	107s	+36%
`mld_ct_memcmp`	✅	92s	76s	+21%
`polyvec_matrix_expand_serial`	✅	85s	83s	+2%
`mld_attempt_signature_generation`	✅	61s	114s	-46%
`mld_ntt_layer`	✅	55s	55s	+0%
`polymat_permute_bitrev_to_custom`	✅	37s	35s	+6%
`sign_signature_internal`	✅	29s	23s	+26%
`mld_compute_t0_t1_tr_from_sk_components`	✅	28s	27s	+4%
`poly_chknorm_c`	✅	21s	20s	+5%
`rej_uniform`	✅	21s	22s	-5%
`fqmul`	✅	20s	21s	-5%
`poly_uniform_eta_4x`	✅	20s	16s	+25%
`polyt0_unpack`	✅	16s	15s	+7%
`polyveck_decompose`	✅	16s	17s	-6%
`rej_uniform_c`	✅	16s	13s	+23%
`keccakf1600x4_permute_native`	✅	15s	14s	+7%
`poly_uniform_4x`	✅	15s	18s	-17%
`polyveck_power2round`	✅	15s	13s	+15%
`mld_ntt_butterfly_block`	✅	13s	15s	-13%
`polyvec_matrix_pointwise_montgomery`	✅	13s	11s	+18%
`poly_add`	✅	12s	12s	+0%
`polyveck_use_hint`	✅	12s	24s	-50%
`keccak_absorb_once_x4`	✅	11s	10s	+10%
`keccakf1600_permute`	✅	10s	8s	+25%
`polyveck_add`	✅	10s	8s	+25%
`sign_pk_from_sk`	✅	10s	10s	+0%
`polyveck_caddq`	✅	9s	7s	+29%
`polyveck_ntt`	✅	9s	9s	+0%
`polyveck_reduce`	✅	9s	7s	+29%
`polyvecl_ntt`	✅	9s	8s	+12%
`unpack_sk`	✅	9s	7s	+29%
`mld_check_pct`	✅	8s	13s	-38%
`polyveck_sub`	✅	8s	9s	-11%
`keccak_absorb`	✅	7s	6s	+17%
`keccakf1600_permute_native`	✅	7s	10s	-30%
`mld_compute_pack_z`	✅	7s	5s	+40%
`mld_polyvecl_permute_bitrev_to_custom_native`	✅	7s	9s	-22%
`poly_decompose_c`	✅	7s	9s	-22%
`poly_invntt_tomont_c`	✅	7s	9s	-22%
`polyveck_pointwise_poly_montgomery`	✅	7s	9s	-22%
`polyveck_shiftl`	✅	7s	7s	+0%
`polyvecl_chknorm`	✅	7s	4s	+75%
`power2round`	✅	7s	4s	+75%
`unpack_hints`	✅	7s	3s	+133%
`keccak_squeezeblocks_x4`	✅	6s	10s	-40%
`mld_sample_s1_s2`	✅	6s	3s	+100%
`mld_sample_s1_s2_serial`	✅	6s	5s	+20%
`pointwise_acc_native_aarch64`	✅	6s	4s	+50%
`polyeta_unpack`	✅	6s	6s	+0%
`sign`	✅	6s	7s	-14%
`sign_keypair_internal`	✅	6s	6s	+0%
`sign_open`	✅	6s	6s	+0%
`sign_signature_extmu`	✅	6s	4s	+50%
`keccakf1600x4_permute`	✅	5s	4s	+25%
`mld_prepare_domain_separation_prefix`	✅	5s	5s	+0%
`pointwise_acc_native_x86_64`	✅	5s	7s	-29%
`poly_caddq_c`	✅	5s	4s	+25%
`poly_caddq_native_aarch64`	✅	5s	2s	+150%
`poly_challenge`	✅	5s	4s	+25%
`poly_chknorm_native`	✅	5s	4s	+25%
`poly_uniform`	✅	5s	7s	-29%
`poly_uniform_gamma1_4x`	✅	5s	6s	-17%
`poly_use_hint_native`	✅	5s	5s	+0%
`polyveck_chknorm`	✅	5s	9s	-44%
`polyveck_invntt_tomont`	✅	5s	8s	-38%
`polyveck_pack_t0`	✅	5s	3s	+67%
`polyz_unpack_c`	✅	5s	3s	+67%
`rej_eta_c`	✅	5s	3s	+67%
`shake128x4_squeezeblocks`	✅	5s	4s	+25%
`shake256x4_absorb_once`	✅	5s	2s	+150%
`sign_signature_pre_hash_internal`	✅	5s	4s	+25%
`sign_verify_extmu`	✅	5s	4s	+25%
`decompose`	✅	4s	5s	-20%
`fqscale`	✅	4s	3s	+33%
`keccak_squeeze`	✅	4s	3s	+33%
`keccakf1600_extract_bytes (big endian)`	✅	4s	2s	+100%
`make_hint`	✅	4s	2s	+100%
`mld_ct_abs_i32`	✅	4s	3s	+33%
`mld_h`	✅	4s	4s	+0%
`ntt_native_aarch64`	✅	4s	5s	-20%
`pack_sk`	✅	4s	3s	+33%
`poly_caddq`	✅	4s	1s	+300%
`poly_caddq_native`	✅	4s	2s	+100%
`poly_chknorm`	✅	4s	3s	+33%
`poly_chknorm_native_aarch64`	✅	4s	3s	+33%
`poly_invntt_tomont`	✅	4s	1s	+300%
`poly_ntt`	✅	4s	3s	+33%
`poly_ntt_c`	✅	4s	3s	+33%
`poly_reduce`	✅	4s	2s	+100%
`poly_uniform_eta`	✅	4s	4s	+0%
`poly_uniform_gamma1`	✅	4s	2s	+100%
`poly_use_hint`	✅	4s	3s	+33%
`polyt1_pack`	✅	4s	3s	+33%
`polyt1_unpack`	✅	4s	3s	+33%
`polyveck_pack_eta`	✅	4s	5s	-20%
`polyveck_pack_w1`	✅	4s	5s	-20%
`polyveck_unpack_eta`	✅	4s	1s	+300%
`polyveck_unpack_t0`	✅	4s	2s	+100%
`polyvecl_pack_eta`	✅	4s	4s	+0%
`polyvecl_uniform_gamma1_serial`	✅	4s	4s	+0%
`rej_eta`	✅	4s	2s	+100%
`shake256_release`	✅	4s	3s	+33%
`shake256x4_squeezeblocks`	✅	4s	2s	+100%
`sign_keypair`	✅	4s	5s	-20%
`sign_verify_pre_hash_shake256`	✅	4s	4s	+0%
`caddq`	✅	3s	3s	+0%
`intt_native_x86_64`	✅	3s	2s	+50%
`keccak_f1600_x1_native_aarch64`	✅	3s	3s	+0%
`keccak_f1600_x4_native_aarch64_v84a`	✅	3s	1s	+200%
`keccak_init`	✅	3s	3s	+0%
`keccakf1600_xor_bytes (big endian)`	✅	3s	2s	+50%
`keccakf1600x4_extract_bytes`	✅	3s	2s	+50%
`keccakf1600x4_xor_bytes`	✅	3s	2s	+50%
`mld_ct_cmask_neg_i32`	✅	3s	2s	+50%
`mld_ct_sel_int32`	✅	3s	2s	+50%
`ntt_native_x86_64`	✅	3s	4s	-25%
`pack_sig_h_poly`	✅	3s	2s	+50%
`pointwise_native_aarch64`	✅	3s	3s	+0%
`poly_decompose`	✅	3s	3s	+0%
`poly_decompose_native`	✅	3s	4s	-25%
`poly_invntt_tomont_native`	✅	3s	3s	+0%
`poly_make_hint`	✅	3s	3s	+0%
`poly_ntt_native`	✅	3s	5s	-40%
`poly_power2round`	✅	3s	5s	-40%
`poly_shiftl`	✅	3s	3s	+0%
`poly_use_hint_c`	✅	3s	5s	-40%
`polyeta_pack`	✅	3s	2s	+50%
`polyt0_pack`	✅	3s	3s	+0%
`polyvecl_permute_bitrev_to_custom`	✅	3s	4s	-25%
`polyvecl_unpack_z`	✅	3s	5s	-40%
`polyw1_pack`	✅	3s	4s	-25%
`polyz_pack`	✅	3s	4s	-25%
`polyz_unpack`	✅	3s	4s	-25%
`rej_eta_native`	✅	3s	2s	+50%
`shake128_absorb`	✅	3s	3s	+0%
`shake128_init`	✅	3s	1s	+200%
`shake128_release`	✅	3s	2s	+50%
`shake128_squeeze`	✅	3s	1s	+200%
`shake128x4_absorb_once`	✅	3s	1s	+200%
`shake256_absorb`	✅	3s	2s	+50%
`sign_signature`	✅	3s	4s	-25%
`sign_signature_pre_hash_shake256`	✅	3s	6s	-50%
`sign_verify`	✅	3s	2s	+50%
`sign_verify_pre_hash_internal`	✅	3s	6s	-50%
`sys_check_capability`	✅	3s	4s	-25%
`use_hint`	✅	3s	3s	+0%
`keccak_f1600_x1_native_aarch64_v84a`	✅	2s	1s	+100%
`keccak_f1600_x4_native_aarch64_v8a_scalar_hybrid`	✅	2s	4s	-50%
`keccak_f1600_x4_native_aarch64_v8a_v84a_scalar_hybrid`	✅	2s	1s	+100%
`keccak_finalize`	✅	2s	3s	-33%
`keccakf1600_xor_bytes`	✅	2s	3s	-33%
`mld_ct_cmask_nonzero_u32`	✅	2s	2s	+0%
`mld_ct_get_optblocker_i64`	✅	2s	4s	-50%
`mld_ct_get_optblocker_u32`	✅	2s	1s	+100%
`mld_value_barrier_i64`	✅	2s	2s	+0%
`montgomery_reduce`	✅	2s	3s	-33%
`pack_sig_c`	✅	2s	3s	-33%
`pack_sig_z`	✅	2s	1s	+100%
`pointwise_native_x86_64`	✅	2s	3s	-33%
`poly_pointwise_montgomery`	✅	2s	3s	-33%
`poly_pointwise_montgomery_native`	✅	2s	3s	-33%
`poly_sub`	✅	2s	3s	-33%
`polyvecl_pointwise_acc_montgomery`	✅	2s	3s	-33%
`polyvecl_pointwise_acc_montgomery_native`	✅	2s	4s	-50%
`polyvecl_uniform_gamma1`	✅	2s	3s	-33%
`polyvecl_unpack_eta`	✅	2s	3s	-33%
`polyz_unpack_native`	✅	2s	4s	-50%
`reduce32`	✅	2s	3s	-33%
`shake128_finalize`	✅	2s	3s	-33%
`shake256`	✅	2s	1s	+100%
`shake256_finalize`	✅	2s	2s	+0%
`shake256_init`	✅	2s	2s	+0%
`unpack_pk`	✅	2s	3s	-33%
`unpack_sig`	✅	2s	5s	-60%
`mld_ct_cmask_nonzero_u8`	✅	1s	3s	-67%
`mld_ct_get_optblocker_u8`	✅	1s	3s	-67%
`mld_keccakf1600_extract_bytes`	✅	1s	2s	-50%
`mld_value_barrier_u32`	✅	1s	4s	-75%
`mld_value_barrier_u8`	✅	1s	2s	-50%
`pack_pk`	✅	1s	3s	-67%
`shake256_squeeze`	✅	1s	1s	+0%

oqs-bot · 2026-04-03T14:15:14Z

CBMC Results (ML-DSA-87)

⚠️ Attention Required

Proof	Status	Current	Previous	Change
`polyveck_invntt_tomont`	⚠️	28s	11s	+155%
`sign_verify_internal`	⚠️	242s	109s	+122%

Full Results (186 proofs)

Proof	Status	Current	Previous	Change
`TOTAL`	✅	2306s	2408s	-4.2%
`sign_verify_internal`	⚠️	242s	109s	+122%
`polyvecl_pointwise_acc_montgomery_c`	✅	193s	186s	+4%
`polyvec_matrix_expand`	✅	172s	237s	-27%
`poly_pointwise_montgomery_c`	✅	160s	249s	-36%
`rej_uniform_native`	✅	147s	148s	-1%
`mld_invntt_layer`	✅	136s	102s	+33%
`polyvec_matrix_expand_serial`	✅	84s	85s	-1%
`mld_ct_memcmp`	✅	73s	77s	-5%
`mld_attempt_signature_generation`	✅	69s	200s	-66%
`mld_ntt_layer`	✅	53s	57s	-7%
`sign_signature_internal`	✅	36s	41s	-12%
`polymat_permute_bitrev_to_custom`	✅	29s	28s	+4%
`polyveck_invntt_tomont`	⚠️	28s	11s	+155%
`mld_compute_t0_t1_tr_from_sk_components`	✅	25s	23s	+9%
`fqmul`	✅	21s	19s	+11%
`rej_uniform`	✅	21s	23s	-9%
`poly_chknorm_c`	✅	19s	19s	+0%
`polyveck_power2round`	✅	18s	15s	+20%
`polyeta_unpack`	✅	17s	18s	-6%
`poly_uniform_eta_4x`	✅	16s	20s	-20%
`keccakf1600x4_permute_native`	✅	15s	13s	+15%
`mld_check_pct`	✅	15s	12s	+25%
`poly_uniform_4x`	✅	15s	17s	-12%
`polyt0_unpack`	✅	15s	15s	+0%
`polyveck_decompose`	✅	15s	11s	+36%
`rej_uniform_c`	✅	15s	16s	-6%
`keccak_absorb_once_x4`	✅	11s	11s	+0%
`mld_ntt_butterfly_block`	✅	11s	11s	+0%
`poly_add`	✅	10s	10s	+0%
`polyveck_add`	✅	10s	8s	+25%
`sign_pk_from_sk`	✅	10s	8s	+25%
`keccak_absorb`	✅	9s	7s	+29%
`pointwise_acc_native_x86_64`	✅	9s	7s	+29%
`polyvec_matrix_pointwise_montgomery`	✅	9s	10s	-10%
`polyveck_reduce`	✅	9s	7s	+29%
`polyz_unpack_c`	✅	9s	9s	+0%
`mld_polyvecl_permute_bitrev_to_custom_native`	✅	8s	12s	-33%
`polyveck_shiftl`	✅	8s	8s	+0%
`polyvecl_ntt`	✅	8s	10s	-20%
`rej_eta_native`	✅	8s	5s	+60%
`unpack_sk`	✅	8s	10s	-20%
`keccakf1600_permute`	✅	7s	9s	-22%
`keccakf1600_permute_native`	✅	7s	7s	+0%
`pointwise_acc_native_aarch64`	✅	7s	7s	+0%
`poly_invntt_tomont_c`	✅	7s	10s	-30%
`polyveck_chknorm`	✅	7s	7s	+0%
`polyveck_ntt`	✅	7s	8s	-12%
`polyveck_pointwise_poly_montgomery`	✅	7s	8s	-12%
`polyveck_sub`	✅	7s	5s	+40%
`polyveck_use_hint`	✅	7s	11s	-36%
`polyvecl_pointwise_acc_montgomery`	✅	7s	5s	+40%
`unpack_hints`	✅	7s	5s	+40%
`mld_compute_pack_z`	✅	6s	8s	-25%
`mld_prepare_domain_separation_prefix`	✅	6s	4s	+50%
`pack_sig_z`	✅	6s	2s	+200%
`poly_caddq_c`	✅	6s	5s	+20%
`polyveck_caddq`	✅	6s	4s	+50%
`sign_keypair_internal`	✅	6s	8s	-25%
`sign_signature`	✅	6s	6s	+0%
`mld_h`	✅	5s	3s	+67%
`mld_sample_s1_s2`	✅	5s	6s	-17%
`mld_sample_s1_s2_serial`	✅	5s	7s	-29%
`poly_caddq_native`	✅	5s	5s	+0%
`poly_chknorm_native`	✅	5s	4s	+25%
`polyveck_pack_eta`	✅	5s	4s	+25%
`polyvecl_chknorm`	✅	5s	5s	+0%
`polyvecl_pointwise_acc_montgomery_native`	✅	5s	5s	+0%
`polyvecl_uniform_gamma1`	✅	5s	5s	+0%
`shake128_squeeze`	✅	5s	2s	+150%
`shake128x4_absorb_once`	✅	5s	3s	+67%
`sign`	✅	5s	7s	-29%
`sign_signature_pre_hash_internal`	✅	5s	5s	+0%
`sign_verify_pre_hash_shake256`	✅	5s	4s	+25%
`unpack_sig`	✅	5s	3s	+67%
`caddq`	✅	4s	3s	+33%
`decompose`	✅	4s	4s	+0%
`fqscale`	✅	4s	5s	-20%
`keccak_squeezeblocks_x4`	✅	4s	6s	-33%
`keccakf1600x4_permute`	✅	4s	4s	+0%
`mld_ct_sel_int32`	✅	4s	2s	+100%
`mld_keccakf1600_extract_bytes`	✅	4s	1s	+300%
`ntt_native_aarch64`	✅	4s	2s	+100%
`ntt_native_x86_64`	✅	4s	3s	+33%
`pack_sig_c`	✅	4s	4s	+0%
`pointwise_native_aarch64`	✅	4s	4s	+0%
`poly_caddq`	✅	4s	3s	+33%
`poly_caddq_native_aarch64`	✅	4s	4s	+0%
`poly_challenge`	✅	4s	3s	+33%
`poly_chknorm`	✅	4s	2s	+100%
`poly_chknorm_native_aarch64`	✅	4s	2s	+100%
`poly_decompose_c`	✅	4s	5s	-20%
`poly_decompose_native`	✅	4s	5s	-20%
`poly_invntt_tomont_native`	✅	4s	2s	+100%
`poly_ntt_native`	✅	4s	2s	+100%
`poly_pointwise_montgomery`	✅	4s	3s	+33%
`poly_sub`	✅	4s	3s	+33%
`poly_uniform`	✅	4s	5s	-20%
`poly_use_hint_c`	✅	4s	2s	+100%
`polyt0_pack`	✅	4s	5s	-20%
`polyt1_pack`	✅	4s	2s	+100%
`polyveck_pack_w1`	✅	4s	4s	+0%
`polyveck_unpack_eta`	✅	4s	4s	+0%
`polyvecl_uniform_gamma1_serial`	✅	4s	3s	+33%
`power2round`	✅	4s	2s	+100%
`rej_eta_c`	✅	4s	3s	+33%
`shake256`	✅	4s	3s	+33%
`shake256x4_squeezeblocks`	✅	4s	2s	+100%
`sign_open`	✅	4s	5s	-20%
`sign_verify`	✅	4s	4s	+0%
`sys_check_capability`	✅	4s	2s	+100%
`use_hint`	✅	4s	2s	+100%
`keccak_f1600_x1_native_aarch64_v84a`	✅	3s	2s	+50%
`keccak_squeeze`	✅	3s	3s	+0%
`keccakf1600_xor_bytes (big endian)`	✅	3s	4s	-25%
`make_hint`	✅	3s	4s	-25%
`mld_ct_abs_i32`	✅	3s	2s	+50%
`mld_ct_cmask_neg_i32`	✅	3s	4s	-25%
`mld_value_barrier_u8`	✅	3s	2s	+50%
`montgomery_reduce`	✅	3s	2s	+50%
`pack_sig_h_poly`	✅	3s	3s	+0%
`pack_sk`	✅	3s	3s	+0%
`pointwise_native_x86_64`	✅	3s	4s	-25%
`poly_invntt_tomont`	✅	3s	1s	+200%
`poly_make_hint`	✅	3s	2s	+50%
`poly_ntt`	✅	3s	2s	+50%
`poly_ntt_c`	✅	3s	2s	+50%
`poly_pointwise_montgomery_native`	✅	3s	2s	+50%
`poly_power2round`	✅	3s	4s	-25%
`poly_uniform_eta`	✅	3s	4s	-25%
`poly_uniform_gamma1_4x`	✅	3s	5s	-40%
`polyeta_pack`	✅	3s	3s	+0%
`polyt1_unpack`	✅	3s	3s	+0%
`polyveck_pack_t0`	✅	3s	3s	+0%
`polyveck_unpack_t0`	✅	3s	4s	-25%
`polyvecl_pack_eta`	✅	3s	1s	+200%
`polyvecl_permute_bitrev_to_custom`	✅	3s	3s	+0%
`polyvecl_unpack_eta`	✅	3s	3s	+0%
`polyvecl_unpack_z`	✅	3s	3s	+0%
`polyz_unpack`	✅	3s	3s	+0%
`reduce32`	✅	3s	3s	+0%
`shake128_finalize`	✅	3s	5s	-40%
`shake128_init`	✅	3s	1s	+200%
`shake256_absorb`	✅	3s	3s	+0%
`shake256x4_absorb_once`	✅	3s	2s	+50%
`sign_keypair`	✅	3s	3s	+0%
`sign_signature_extmu`	✅	3s	5s	-40%
`sign_signature_pre_hash_shake256`	✅	3s	7s	-57%
`sign_verify_extmu`	✅	3s	2s	+50%
`sign_verify_pre_hash_internal`	✅	3s	3s	+0%
`intt_native_x86_64`	✅	2s	3s	-33%
`keccak_f1600_x1_native_aarch64`	✅	2s	2s	+0%
`keccak_f1600_x4_native_aarch64_v84a`	✅	2s	2s	+0%
`keccak_f1600_x4_native_aarch64_v8a_scalar_hybrid`	✅	2s	1s	+100%
`keccak_f1600_x4_native_aarch64_v8a_v84a_scalar_hybrid`	✅	2s	3s	-33%
`keccakf1600_xor_bytes`	✅	2s	2s	+0%
`keccakf1600x4_extract_bytes`	✅	2s	3s	-33%
`mld_ct_cmask_nonzero_u32`	✅	2s	2s	+0%
`mld_ct_cmask_nonzero_u8`	✅	2s	1s	+100%
`mld_ct_get_optblocker_u8`	✅	2s	2s	+0%
`mld_value_barrier_u32`	✅	2s	3s	-33%
`pack_pk`	✅	2s	2s	+0%
`poly_decompose`	✅	2s	4s	-50%
`poly_reduce`	✅	2s	4s	-50%
`poly_shiftl`	✅	2s	5s	-60%
`poly_uniform_gamma1`	✅	2s	6s	-67%
`poly_use_hint`	✅	2s	5s	-60%
`poly_use_hint_native`	✅	2s	2s	+0%
`polyw1_pack`	✅	2s	2s	+0%
`polyz_pack`	✅	2s	3s	-33%
`polyz_unpack_native`	✅	2s	5s	-60%
`rej_eta`	✅	2s	2s	+0%
`shake128_absorb`	✅	2s	1s	+100%
`shake128x4_squeezeblocks`	✅	2s	2s	+0%
`shake256_init`	✅	2s	4s	-50%
`shake256_squeeze`	✅	2s	4s	-50%
`unpack_pk`	✅	2s	4s	-50%
`keccak_finalize`	✅	1s	2s	-50%
`keccak_init`	✅	1s	2s	-50%
`keccakf1600_extract_bytes (big endian)`	✅	1s	3s	-67%
`keccakf1600x4_xor_bytes`	✅	1s	4s	-75%
`mld_ct_get_optblocker_i64`	✅	1s	2s	-50%
`mld_ct_get_optblocker_u32`	✅	1s	3s	-67%
`mld_value_barrier_i64`	✅	1s	2s	-50%
`shake128_release`	✅	1s	1s	+0%
`shake256_finalize`	✅	1s	2s	-50%
`shake256_release`	✅	1s	2s	-50%

Switch to tautschnig/cbmc fix-8813-union-performance branch Signed-off-by: Matthias J. Kannwischer <matthias@zerorisc.com>

diffblue/cbmc#8705 Signed-off-by: Matthias J. Kannwischer <matthias@zerorisc.com>

Signed-off-by: Hanno Becker <beckphan@amazon.co.uk>

--no-array-field-sensitivity is harmful to proof performance here, so remove it. Signed-off-by: Hanno Becker <beckphan@amazon.co.uk>

mkannwischer force-pushed the cbmc-fix-8813-union-performance branch 4 times, most recently from 8e90129 to ec3100b Compare April 3, 2026 13:59

hanno-becker mentioned this pull request Apr 4, 2026

Decompose byte_extract from union through widest member diffblue/cbmc#8950

Merged

4 tasks

mkannwischer force-pushed the cbmc-fix-8813-union-performance branch from 7794a4e to c329c22 Compare April 12, 2026 15:23

mkannwischer changed the title ~~cbmc: Switch to tautschnig/cbmc fix-8813-union-performance branch~~ CBMC: Remove MLD_UNION_OR_STRUCT workaround Apr 12, 2026

mkannwischer added 2 commits April 13, 2026 11:39

Remove MLD_UNION_OR_STRUCT workaround, always use union

d80b088

Switch to tautschnig/cbmc fix-8813-union-performance branch Signed-off-by: Matthias J. Kannwischer <matthias@zerorisc.com>

CBMC: Include PR8705

e56604b

diffblue/cbmc#8705 Signed-off-by: Matthias J. Kannwischer <matthias@zerorisc.com>

hanno-becker force-pushed the cbmc-fix-8813-union-performance branch 2 times, most recently from e1f6baa to baaf6dc Compare April 13, 2026 12:49

hanno-becker added 2 commits April 13, 2026 14:08

CBMC: Include PR8958

c54107f

Signed-off-by: Hanno Becker <beckphan@amazon.co.uk>

CBMC: Tweak config for attempt_signature_generation

fa08eee

--no-array-field-sensitivity is harmful to proof performance here, so remove it. Signed-off-by: Hanno Becker <beckphan@amazon.co.uk>

hanno-becker force-pushed the cbmc-fix-8813-union-performance branch from baaf6dc to fa08eee Compare April 13, 2026 13:09

hanno-becker mentioned this pull request Apr 13, 2026

Decompose non-constant-offset byte_extract from union in field sensitivity diffblue/cbmc#8958

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CBMC: Remove `MLD_UNION_OR_STRUCT` workaround#1016

CBMC: Remove `MLD_UNION_OR_STRUCT` workaround#1016
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