Run 1771979026

• Date (UTC): 2026-02-25 00:23:46Z
• Benchmark: ba8d62011bfe6a040ca3a3be87c55595
• Timeout: 4h
• Target: Recon-Fuzz/liquity-V2-gov-scfuzzbench @ recon
• Benchmark type: property
• Instances: 2 × c6a.4xlarge per fuzzer
• Harness: scfuzzbench/scfuzzbench@3e370308ae

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.

⚠️ Run health

The following fuzzer legs show signs of not having run for the full time budget. Their results below are not comparable to healthy legs.

• ⚠️ echidna: no bugs and no runtime activity samples were parsed from any instance — the fuzzer most likely never executed (startup/compile failure). Inspect the instance bootstrap logs before drawing conclusions from this leg.

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	6 [6,6]	6 [6,6]
foundry	2	2 [2,2]	2 [2,2]
echidna	2	0 [0,0]	0 [0,0]

Overall metrics

Fuzzer	AUC (norm)	Plateau time	Late discovery share	Final median	Final IQR
medusa	0.983	0.10h	0.000	6	0.00
foundry	0.331	0.10h	0.000	2	0.00
echidna	0.000	0.00h	0.000	0	0.00

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	0.10h	0.10h	100.0%	100.0%	100.0%
foundry	0.00h	inf	inf	100.0%	0.0%	0.0%
echidna	inf	inf	inf	0.0%	0.0%	0.0%

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	10595.00 [10276.50,10913.50]	2	20541055292.50 [19382508990.75,21699601594.25]

Progress metrics from logs (fuzzer-specific proxies)

Coverage/corpus values are parsed from each fuzzer's native progress output and are useful for trend context, not strict cross-fuzzer equivalence.

Fuzzer	Runs	Seq/s runs	Seq/s p50 [p25,p75]	Coverage runs	Coverage p50 [p25,p75]	Corpus runs	Corpus p50 [p25,p75]
medusa	2	2	105.00 [102.00,108.00]	2	2053.00 [2052.00,2054.00]	2	74.00 [73.50,74.50]
foundry	2	0	n/a	2	459.50 [455.25,463.75]	2	324.50 [320.75,328.25]

Statistical comparison (Mann-Whitney U test)

Pairwise Mann-Whitney U tests on end-of-budget bug counts (two-sided). Bonferroni correction applied for 3 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	p-value	p (corrected)	Significant
medusa	foundry	6	2	4.0	0.1939	0.5818	no
medusa	echidna	6	0	4.0	0.1939	0.5818	no
foundry	echidna	2	0	4.0	0.1939	0.5818	no

No pairwise comparison reached significance after Bonferroni correction.

Note: The Mann-Whitney U test assesses whether one fuzzer tends to find more bugs than another across runs. It does not measure effect size or practical importance. Small sample sizes (fewer than 5 runs) reduce statistical power.

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 metrics in this section are count-based; use broken_invariants.md / broken_invariants.csv for 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: 16 / 16
• Unique invariants: 6

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	0
foundry	2
medusa	6

High-level overlap

• Shared by all active fuzzers: 2
• Fuzzers with no broken-invariant events: echidna
• Exclusive to echidna: 0
• Exclusive to foundry: 0
• Exclusive to medusa: 4

Grouped invariants

Exclusive to echidna (0)

None.

Exclusive to foundry (0)

None.

Exclusive to medusa (4)

• assert_canary
• invariant_BI03
• invariant_BI04
• invariant_GV01

Shared by all active fuzzers (2)

• CANARY
• invariant_canary

Runner resource usage

• Budget filter: 4.00h
• Instances with metrics: 6
• Total samples: 11436

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	10.83	26.13	1.29	1.53	4.22	4.99
foundry	2	99.79	99.97	1.58	2.15	5.17	7.00
medusa	2	96.96	98.48	1.28	2.10	4.17	6.85

Instance stats

Instance	Fuzzer	Samples	Duration (h)	CPU active avg (%)	CPU active peak (%)	Memory avg (GiB)	Memory peak (GiB)	Memory avg (%)	Memory peak (%)
i-00ffee8ef007b86ca-echidna-v2.3.1	echidna	6	0.01	10.68	24.99	1.28	1.56	4.19	5.08
i-0e21cc40c5f02c94b-echidna-v2.3.1	echidna	6	0.01	10.98	27.27	1.30	1.50	4.26	4.90
i-00ceb08dc83f03bc7-foundry-git-3a47949	foundry	2853	4.00	99.78	99.97	1.58	2.11	5.15	6.87
i-03eedfcae2de16371-foundry-git-3a47949	foundry	2854	4.00	99.79	99.97	1.59	2.18	5.18	7.13
i-05ff2d492c2056785-medusa-v1.4.1	medusa	2858	4.00	97.10	98.43	1.26	1.99	4.12	6.51
i-0c09688631484f2a2-medusa-v1.4.1	medusa	2859	4.00	96.81	98.53	1.29	2.20	4.22	7.19

Manifest

• scfuzzbench_commit: 3e370308ae8b09ff40badacf12ef8cef1f1b4241
• target_repo_url: https://github.com/Recon-Fuzz/liquity-V2-gov-scfuzzbench
• target_commit: recon
• benchmark_type: property
• instance_type: c6a.4xlarge
• instances_per_fuzzer: 2
• timeout_hours: 4
• aws_region: us-east-1
• ubuntu_ami_id: ami-0071174ad8cbb9e17
• foundry_version: v1.6.0-rc1
• foundry_git_repo: https://github.com/aviggiano/foundry
• foundry_git_ref: master
• echidna_version: 2.3.1
• medusa_version: 1.4.1
• fuzzer_keys: echidna, foundry, medusa

Artifacts

• Manifest (index): https://scfuzzbench-logs-185f44d6.s3.us-east-1.amazonaws.com/runs/1771979026/ba8d62011bfe6a040ca3a3be87c55595/manifest.json

• Report prefix: https://scfuzzbench-logs-185f44d6.s3.us-east-1.amazonaws.com/analysis/ba8d62011bfe6a040ca3a3be87c55595/1771979026/

• Broken invariants (Markdown): https://scfuzzbench-logs-185f44d6.s3.us-east-1.amazonaws.com/analysis/ba8d62011bfe6a040ca3a3be87c55595/1771979026/broken_invariants.md

• Broken invariants (CSV): https://scfuzzbench-logs-185f44d6.s3.us-east-1.amazonaws.com/analysis/ba8d62011bfe6a040ca3a3be87c55595/1771979026/broken_invariants.csv

• Throughput summary (CSV): https://scfuzzbench-logs-185f44d6.s3.us-east-1.amazonaws.com/analysis/ba8d62011bfe6a040ca3a3be87c55595/1771979026/throughput_summary.csv

• Progress metrics summary (CSV): https://scfuzzbench-logs-185f44d6.s3.us-east-1.amazonaws.com/analysis/ba8d62011bfe6a040ca3a3be87c55595/1771979026/progress_metrics_summary.csv

• Runner resource usage (Markdown): https://scfuzzbench-logs-185f44d6.s3.us-east-1.amazonaws.com/analysis/ba8d62011bfe6a040ca3a3be87c55595/1771979026/runner_resource_usage.md

• Runner resource summary (CSV): https://scfuzzbench-logs-185f44d6.s3.us-east-1.amazonaws.com/analysis/ba8d62011bfe6a040ca3a3be87c55595/1771979026/runner_resource_summary.csv

• Runner resource timeseries (CSV): https://scfuzzbench-logs-185f44d6.s3.us-east-1.amazonaws.com/analysis/ba8d62011bfe6a040ca3a3be87c55595/1771979026/runner_resource_timeseries.csv

• Analysis bundle: https://scfuzzbench-logs-185f44d6.s3.us-east-1.amazonaws.com/analysis/ba8d62011bfe6a040ca3a3be87c55595/1771979026/bundles/analysis.zip

• Logs bundle: https://scfuzzbench-logs-185f44d6.s3.us-east-1.amazonaws.com/analysis/ba8d62011bfe6a040ca3a3be87c55595/1771979026/bundles/logs.zip

• Corpus bundle: https://scfuzzbench-logs-185f44d6.s3.us-east-1.amazonaws.com/analysis/ba8d62011bfe6a040ca3a3be87c55595/1771979026/bundles/corpus.zip

• Raw logs prefix: https://scfuzzbench-logs-185f44d6.s3.us-east-1.amazonaws.com/logs/1771979026/ba8d62011bfe6a040ca3a3be87c55595/

• Raw corpus prefix: https://scfuzzbench-logs-185f44d6.s3.us-east-1.amazonaws.com/corpus/1771979026/ba8d62011bfe6a040ca3a3be87c55595/