Run gh-30135103101-1

• Date (UTC): 2026-07-24 23:57:27Z
• Benchmark: 0de0890f83288f98ffcdf0340d6bc869
• Timeout: 4h
• Target: scfuzzbench/origin-dollar-scfuzzbench @ 2fa707ef0a
• Benchmark type: property
• Instances: 2 × c6a.4xlarge per fuzzer
• Harness: scfuzzbench/scfuzzbench@3d834b12c5

Trial run

Warning — trial run. This benchmark was executed with fewer than 10 instances per fuzzer and/or a time budget shorter than 24h. Results from trial runs are meant for debugging purposes and are not valid for extracting conclusions across different fuzzers.

Charts

Report

Fuzzer Benchmark Report (from bug-count CSV)

• Time budget: 4.00h

Warning — trial run. This benchmark was executed with fewer than 10 instances per fuzzer and/or a time budget shorter than 24h. Results from trial runs are meant for debugging purposes and are not valid for extracting conclusions across different fuzzers.

Executive summary

This report is derived solely from cumulative bugs-found over time across repeated runs per fuzzer. It emphasizes robust, distribution-based metrics (median/IQR, success rates, time-to-k) and shape-based behavior (plateau time, late discovery share) instead of single-run time-to-first-bug.

Bugs found at fixed time budgets (median [IQR])

Fuzzer	Runs	1h	4h
medusa	2	15 [15,15]	15 [15,15]
recon-fuzzer	2	15 [15,15]	15 [15,15]
foundry	2	14 [14,14]	14 [14,15]
echidna	2	14 [14,14]	14 [14,14]

Overall metrics

Fuzzer	AUC (norm)	Plateau time	Late discovery share	Final median	Final IQR
medusa	0.995	0.10h	0.000	15	0.00
recon-fuzzer	0.977	0.20h	0.000	15	0.00
foundry	0.915	3.20h	0.034	14	0.50
echidna	0.907	0.20h	0.000	14	1.00

Milestones: time-to-k and success rates

Fuzzer	time-to-1 (p50)	time-to-3 (p50)	time-to-5 (p50)	reach-1 rate	reach-3 rate	reach-5 rate
medusa	0.00h	0.00h	0.00h	100.0%	100.0%	100.0%
recon-fuzzer	0.00h	0.10h	0.10h	100.0%	100.0%	100.0%
foundry	0.00h	0.10h	0.10h	100.0%	100.0%	100.0%
echidna	0.10h	0.10h	0.10h	100.0%	100.0%	100.0%

Throughput metrics (if supported by log format)

Values are run-level rates aggregated per fuzzer; n/a indicates the parser could not recover that metric from logs.

Fuzzer	Runs	Tx/s runs	Tx/s p50 [p25,p75]	Gas/s runs	Gas/s p50 [p25,p75]
medusa	2	2	47271.50 [47264.25,47278.75]	2	2481019972.00 [2472204881.50,2489835062.50]
recon-fuzzer	2	2	6184.80 [6016.90,6352.70]	2	313549310.50 [305539774.25,321558846.75]
foundry	2	2	178007.07 [177006.86,179007.27]	2	14206188074.28 [14161344676.98,14251031471.57]
echidna	2	2	10407.18 [10194.76,10619.59]	2	92658485234.50 [91478001636.25,93838968832.75]

Progress metrics from logs (fuzzer-specific proxies)

Sequence-rate and corpus values are parsed from native progress output and are useful for within-tool trend context.

Fuzzer	Runs	Seq/s runs	Seq/s p50 [p25,p75]	Corpus runs	Corpus p50 [p25,p75]
medusa	2	2	472.50 [472.25,472.75]	2	199.00 [196.00,202.00]
recon-fuzzer	2	0	n/a	2	27.50 [26.75,28.25]
foundry	2	0	n/a	2	0.00 [0.00,0.00]
echidna	2	0	n/a	2	30.50 [30.25,30.75]

Function selector sanity checks

Counts are occurrences in unique saved corpus sequences, not runtime execution frequencies The complete per-instance distribution is in selector_distribution.csv; selector_summary.json preserves statuses and provenance.

• Expected-set status: available (46 selector(s))
• Expected-set provenance: peer-consensus heuristic: observed in every available corpus for at least two independent evidence families (Echidna and Recon count as one related typed-corpus family); not benchmark ground truth

Fuzzer	Status	Instances with telemetry	Saved-corpus calls	Unique selectors
echidna	available	2/2	6036	47
foundry	unavailable	0/2	0	0
medusa	available	2/2	8829	46
recon-fuzzer	available	2/2	5449	45

Most common saved-corpus selectors

Fuzzer	Selector	Function	Calls	Share
echidna	0x72a96677	transferFrom(uint8,uint8,uint8,uint256)	165	2.73%
echidna	0x0a1fc5e7	testMintBalance(uint8,uint256)	156	2.58%
echidna	0x1a042ae7	invariant_canary()	156	2.58%
echidna	0xb1327fd9	testMintZeroBalance(uint8)	156	2.58%
echidna	0x9164cd26	testTransferBalanceSentMore(uint8,uint8,uint256)	152	2.52%
echidna	0x866ba8f7	optOut(uint8)	149	2.47%
echidna	0x39a7919f	changeSupply(uint256)	148	2.45%
echidna	0xc6c7c2e5	testCreditsPerTokenVsBalance(uint8)	146	2.42%
echidna	0x00a3c5d1	testTransferWithinBalanceDoesNotRevert(uint8,uint8,uint256)	145	2.40%
echidna	0xc7df1ada	testTransferFromShouldNotRevert(uint8,uint8,uint8,uint256)	145	2.40%
medusa	0xdad9f8f0	approve(uint8,uint8,uint256)	320	3.62%
medusa	0x1e7cfc16	testTransferSelf(uint8,uint256)	304	3.44%
medusa	0x8dcd3725	testTransferBalanceSentLessRounding(uint8,uint8,uint256)	262	2.97%
medusa	0xfbf4f900	testBurnZeroBalance(uint8)	258	2.92%
medusa	0x0a1fc5e7	testMintBalance(uint8,uint256)	247	2.80%
medusa	0x13ffd369	testBurnBalance(uint8,uint256)	247	2.80%
medusa	0x43a45e75	testTransferBalanceSentLess(uint8,uint8,uint256)	246	2.79%
medusa	0x59c4235c	burn(uint8,uint256)	244	2.76%
medusa	0x50c7ce5d	testTransferExceedingBalanceReverts(uint8,uint8,uint256)	231	2.62%
medusa	0x379db993	testTransferBalanceReceivedLessRounding(uint8,uint8,uint256)	222	2.51%
recon-fuzzer	0x1e7cfc16	testTransferSelf(uint8,uint256)	174	3.19%
recon-fuzzer	0x9a92314c	testOptInBalance(uint8)	158	2.90%
recon-fuzzer	0xa7847496	testOptInTotalSupply(uint8)	148	2.72%
recon-fuzzer	0x178e5c32	testChangeSupply(uint256)	143	2.62%
recon-fuzzer	0x59c4235c	burn(uint8,uint256)	139	2.55%
recon-fuzzer	0xe4840d4f	testTransferBalanceReceivedMore(uint8,uint8,uint256)	139	2.55%
recon-fuzzer	0x3e1d09c5	testTotalSupplyLessThanTotalBalance()	136	2.50%
recon-fuzzer	0xd89cecc4	testNonRebasingSupplyVsTotalSupply()	134	2.46%
recon-fuzzer	0x1a042ae7	invariant_canary()	133	2.44%
recon-fuzzer	0x39a7919f	changeSupply(uint256)	133	2.44%

Selector diagnostic findings

• INFO: i-033759ad8f5c500dd-recon-v0.4.18: peer-heuristic gap (diagnostic, not ground truth): absent 2 selector(s): 0x12b58349, 0x54113357
• INFO: i-07121a2277201ef3d-recon-v0.4.18: peer-heuristic gap (diagnostic, not ground truth): absent 2 selector(s): 0x12b58349, 0x54113357

Selector telemetry limitations

• i-0142078d9e7b5f9c4-foundry-git-02c05d9: Foundry selector distribution is unavailable because no persisted corpus was present; failure-event selectors are intentionally not used as a distribution
• i-02483c2597aee1f3a-foundry-git-02c05d9: Foundry selector distribution is unavailable because no persisted corpus was present; failure-event selectors are intentionally not used as a distribution

Statistical comparison (Mann-Whitney U and Vargha-Delaney A12)

Pairwise Mann-Whitney U tests and Vargha-Delaney A12 effect sizes on end-of-budget bug counts. The tests are two-sided, with Bonferroni correction applied for 6 comparison(s). Significance level: alpha = 0.05.

Warnings:

• One or more fuzzers have fewer than 5 runs. Statistical power may be limited.

Fuzzer A	Fuzzer B	Median A	Median B	U statistic	A12 (A over B)	Effect magnitude	p-value	p (corrected)	Significant
medusa	recon-fuzzer	15	15	2.0	0.500	negligible	1.0000	1.0000	no
medusa	foundry	15	14.5	3.0	0.750	large	0.6171	1.0000	no
medusa	echidna	15	14	3.0	0.750	large	0.6171	1.0000	no
recon-fuzzer	foundry	15	14.5	3.0	0.750	large	0.6171	1.0000	no
recon-fuzzer	echidna	15	14	3.0	0.750	large	0.6171	1.0000	no
foundry	echidna	14.5	14	2.5	0.625	small	1.0000	1.0000	no

No pairwise comparison reached significance after Bonferroni correction.

Note: A12 is the probability that a randomly selected Fuzzer A run has a higher final bug count than a randomly selected Fuzzer B run, counting ties as half. Values above 0.5 favor A, values below 0.5 favor B, and 0.5 means equal tendency. Magnitude thresholds by distance from 0.5 are negligible (<0.06), small (<0.14), medium (<0.21), and large (>=0.21). Small sample sizes (fewer than 5 runs) reduce statistical power. A12 and its magnitude label are descriptive; the thresholds are rules of thumb. Neither the effect size nor statistical significance establishes practical importance, causation, or performance beyond the observed runs.

Shape-based interpretation (rules of thumb)

• Fast-start / early-plateau: high early checkpoint median + early plateau time + low late discovery share.
• Steady: moderate AUC, later plateau, consistent improvements across checkpoints, moderate variance.
• Slow-burn / late-surge: low early checkpoints but high late discovery share and later plateau time; often higher final median.

Limitations

• Core count-based charts use normalized event identities stored under the legacy bugs_found column. They do not count crash inputs, but they are not confirmed root-cause bug counts.
• Use known_bug_report.md, known_bug_summary.csv, and known_bug_findings.csv for evidence-backed known-bug hit rates; use broken_invariants.md / broken_invariants.csv for raw invariant identities.
• Severity, exploitability, and root-cause uniqueness cannot be measured directly without richer per-bug metadata.
• Harness design still affects results; mitigate by keeping harness identical across fuzzers and reporting many runs.

Broken invariants

• Budget filter: 4.00h
• Events considered: 117 / 117
• Unique invariants: 15

Warning — trial run. This benchmark was executed with fewer than 10 instances per fuzzer and/or a time budget shorter than 24h. Results from trial runs are meant for debugging purposes and are not valid for extracting conclusions across different fuzzers.

Per-fuzzer totals

Fuzzer	Invariants
echidna	15
foundry	15
medusa	15
recon-fuzzer	15

High-level overlap

• Shared by all active fuzzers: 15
• Exclusive to echidna: 0
• Exclusive to foundry: 0
• Exclusive to medusa: 0
• Exclusive to recon-fuzzer: 0

Grouped invariants

Exclusive to echidna (0)

None.

Exclusive to foundry (0)

None.

Exclusive to medusa (0)

None.

Exclusive to recon-fuzzer (0)

None.

Shared by all active fuzzers (15)

• assert_canary
• invariant_canary
• testBurnBalance
• testChangeSupply
• testMintBalanceRounding
• testOptInBalance
• testOptInBalanceRounding
• testRebasingCreditsPerTokenNotIncreased
• testTotalSupplyLessThanTotalBalance
• testTransferBalanceReceivedLessRounding
• testTransferBalanceReceivedMore
• testTransferBalanceSentLess
• testTransferFromShouldNotRevert
• testTransferSelf
• testTransferWithinBalanceDoesNotRevert

Ground-truth known-bug mapping

Ground-truth mapping was not applied.

• Reason: run commit 2fa707ef0a0e2080ed092ca70dc5fc4e59170c7a is not the evidence-pinned catalog revision 299ec6b6bf5401b43efc3e9f7ee5cab3e76167c4
• Catalog: benchmarks/known_bugs.json

No event was classified as a known bug. Raw event analysis remains available, but it must not be interpreted as a confirmed bug count.

Runner resource usage

• Budget filter: 4.00h
• Instances with metrics: 8
• Total samples: 21124

Per-fuzzer medians (across instances)

Fuzzer	Instances	CPU active avg (%)	CPU active peak (%)	Memory used avg (GiB)	Memory used peak (GiB)	Memory used avg (%)	Memory used peak (%)
echidna	2	84.02	97.15	20.92	27.89	68.28	91.02
foundry	2	99.91	100.00	0.96	1.16	3.14	3.79
medusa	2	87.43	88.81	1.09	1.33	3.56	4.34
recon-fuzzer	2	94.00	100.00	10.80	15.26	35.25	49.81

Instance stats

Instance	Fuzzer	Samples	Duration (h)	CPU active avg (%)	CPU active peak (%)	Memory avg (GiB)	Memory peak (GiB)	Memory avg (%)	Memory peak (%)
i-03164966ee4fb891e-echidna-v2.3.2	echidna	2235	3.20	84.06	97.14	21.48	28.91	70.11	94.33
i-0df8c5c93c1c4809e-echidna-v2.3.2	echidna	2092	2.99	83.97	97.15	20.37	26.88	66.45	87.71
i-0142078d9e7b5f9c4-foundry-git-02c05d9	foundry	2795	3.98	99.91	100.00	0.96	1.16	3.14	3.79
i-02483c2597aee1f3a-foundry-git-02c05d9	foundry	2795	3.98	99.91	100.00	0.96	1.16	3.14	3.79
i-062da01d07db7b2d2-medusa-v1.5.1	medusa	2810	4.00	87.73	89.48	1.12	1.35	3.66	4.40
i-0fa5dbeef5c7d9b00-medusa-v1.5.1	medusa	2810	4.00	87.14	88.13	1.06	1.31	3.46	4.27
i-033759ad8f5c500dd-recon-v0.4.18	recon-fuzzer	2795	4.00	93.75	100.00	10.74	15.20	35.06	49.59
i-07121a2277201ef3d-recon-v0.4.18	recon-fuzzer	2792	4.00	94.26	100.00	10.86	15.33	35.44	50.02

Manifest

• scfuzzbench_commit: 3d834b12c5d851968933acddd10ef5429228fb5d
• target_repo_url: https://github.com/scfuzzbench/origin-dollar-scfuzzbench
• target_commit: 2fa707ef0a0e2080ed092ca70dc5fc4e59170c7a
• benchmark_type: property
• instance_type: c6a.4xlarge
• instances_per_fuzzer: 2
• timeout_hours: 4
• aws_region: us-east-1
• ubuntu_ami_id: ami-052355af2a014bd2c
• foundry_version: 1.7.2-dev
• foundry_git_repo: https://github.com/foundry-rs/foundry
• foundry_git_ref: 02c05d970d2801da0aef8b82486ce84b01ede36d
• foundry_source_patch: scfuzzbench-throughput-progress-v1@sha256:2ee9e69b77c8007c78c816eb9ca791684aa5ecede0651b63f86cdd2e055eb17e
• echidna_version: 2.3.2
• medusa_version: 1.5.1
• recon_version: 0.4.18
• fuzzer_keys: echidna, foundry, medusa, recon-fuzzer

Artifacts

• Manifest (index): https://scfuzzbench-logs-185f44d6.s3.us-east-1.amazonaws.com/runs/gh-30135103101-1/0de0890f83288f98ffcdf0340d6bc869/manifest.json

• Report prefix: https://scfuzzbench-logs-185f44d6.s3.us-east-1.amazonaws.com/analysis/0de0890f83288f98ffcdf0340d6bc869/gh-30135103101-1/

• Broken invariants (Markdown): https://scfuzzbench-logs-185f44d6.s3.us-east-1.amazonaws.com/analysis/0de0890f83288f98ffcdf0340d6bc869/gh-30135103101-1/broken_invariants.md

• Broken invariants (CSV): https://scfuzzbench-logs-185f44d6.s3.us-east-1.amazonaws.com/analysis/0de0890f83288f98ffcdf0340d6bc869/gh-30135103101-1/broken_invariants.csv

• Ground-truth known bugs (Markdown): https://scfuzzbench-logs-185f44d6.s3.us-east-1.amazonaws.com/analysis/0de0890f83288f98ffcdf0340d6bc869/gh-30135103101-1/known_bug_report.md

• Ground-truth summary (CSV): https://scfuzzbench-logs-185f44d6.s3.us-east-1.amazonaws.com/analysis/0de0890f83288f98ffcdf0340d6bc869/gh-30135103101-1/known_bug_summary.csv

• Ground-truth findings (CSV): https://scfuzzbench-logs-185f44d6.s3.us-east-1.amazonaws.com/analysis/0de0890f83288f98ffcdf0340d6bc869/gh-30135103101-1/known_bug_findings.csv

• Throughput summary (CSV): https://scfuzzbench-logs-185f44d6.s3.us-east-1.amazonaws.com/analysis/0de0890f83288f98ffcdf0340d6bc869/gh-30135103101-1/throughput_summary.csv

• Progress metrics summary (CSV): https://scfuzzbench-logs-185f44d6.s3.us-east-1.amazonaws.com/analysis/0de0890f83288f98ffcdf0340d6bc869/gh-30135103101-1/progress_metrics_summary.csv

• Function selector distribution (CSV): https://scfuzzbench-logs-185f44d6.s3.us-east-1.amazonaws.com/analysis/0de0890f83288f98ffcdf0340d6bc869/gh-30135103101-1/selector_distribution.csv

• Function selector summary and health (JSON): https://scfuzzbench-logs-185f44d6.s3.us-east-1.amazonaws.com/analysis/0de0890f83288f98ffcdf0340d6bc869/gh-30135103101-1/selector_summary.json

• Runner resource usage (Markdown): https://scfuzzbench-logs-185f44d6.s3.us-east-1.amazonaws.com/analysis/0de0890f83288f98ffcdf0340d6bc869/gh-30135103101-1/runner_resource_usage.md

• Runner resource summary (CSV): https://scfuzzbench-logs-185f44d6.s3.us-east-1.amazonaws.com/analysis/0de0890f83288f98ffcdf0340d6bc869/gh-30135103101-1/runner_resource_summary.csv

• Runner resource timeseries (CSV): https://scfuzzbench-logs-185f44d6.s3.us-east-1.amazonaws.com/analysis/0de0890f83288f98ffcdf0340d6bc869/gh-30135103101-1/runner_resource_timeseries.csv

• Analysis bundle: https://scfuzzbench-logs-185f44d6.s3.us-east-1.amazonaws.com/analysis/0de0890f83288f98ffcdf0340d6bc869/gh-30135103101-1/bundles/analysis.zip

• Logs bundle: https://scfuzzbench-logs-185f44d6.s3.us-east-1.amazonaws.com/analysis/0de0890f83288f98ffcdf0340d6bc869/gh-30135103101-1/bundles/logs.zip

• Corpus bundle: https://scfuzzbench-logs-185f44d6.s3.us-east-1.amazonaws.com/analysis/0de0890f83288f98ffcdf0340d6bc869/gh-30135103101-1/bundles/corpus.zip

• Raw logs prefix: https://scfuzzbench-logs-185f44d6.s3.us-east-1.amazonaws.com/logs/gh-30135103101-1/0de0890f83288f98ffcdf0340d6bc869/

• Raw corpus prefix: https://scfuzzbench-logs-185f44d6.s3.us-east-1.amazonaws.com/corpus/gh-30135103101-1/0de0890f83288f98ffcdf0340d6bc869/