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Run 1775307254 ​

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 ​

Bugs Over TimeTime To KFinal DistributionPlateau And Late ShareInvariant Overlap (UpSet)Coverage Over TimeCorpus Size Over TimeSeq/s Over TimeTx/s Over TimeGas/s Over TimeCPU Usage Over TimeMemory Usage Over Time

Report ​

Fuzzer Benchmark Report (from bug-count CSV) ​

  • Time budget: 1.00h

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]) ​

FuzzerRuns1h
echidna27 [6,8]
medusa26 [5,6]
foundry24 [3,4]

Overall metrics ​

FuzzerAUC (norm)Plateau timeLate discovery shareFinal medianFinal IQR
echidna0.6810.80h0.07171.00
medusa0.5880.40h0.00060.50
foundry0.3560.90h0.14340.50

Milestones: time-to-k and success rates ​

Fuzzertime-to-1 (p50)time-to-3 (p50)time-to-5 (p50)reach-1 ratereach-3 ratereach-5 rate
echidna0.10h0.10h0.20h100.0%100.0%100.0%
medusa0.10h0.10h0.30h100.0%100.0%100.0%
foundry0.00h0.10hinf100.0%100.0%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.

FuzzerRunsTx/s runsTx/s p50 [p25,p75]Gas/s runsGas/s p50 [p25,p75]
echidna221893.62 [1875.12,1912.12]210994800171.50 [5497400085.75,16492200257.25]
medusa221185.00 [1163.50,1206.50]2146323191.50 [136574819.75,156071563.25]

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.

FuzzerRunsSeq/s runsSeq/s p50 [p25,p75]Coverage runsCoverage p50 [p25,p75]Corpus runsCorpus p50 [p25,p75]
echidna20n/a277125.00 [76019.50,78230.50]2126.00 [125.50,126.50]
medusa2212.00 [12.00,12.00]24738.50 [4737.25,4739.75]2199.50 [199.25,199.75]
foundry20n/a2346.50 [345.75,347.25]2300.50 [291.25,309.75]

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 AFuzzer BMedian AMedian BU statisticp-valuep (corrected)Significant
echidnamedusa75.53.50.41421.0000no
echidnafoundry73.54.00.33331.0000no
medusafoundry5.53.54.00.33331.0000no

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: 1.00h
  • Events considered: 32 / 32
  • Unique invariants: 9

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 ​

FuzzerInvariants
echidna8
foundry4
medusa6

High-level overlap ​

  • Shared by all active fuzzers: 3
  • Exclusive to echidna: 3
  • Exclusive to foundry: 0
  • Exclusive to medusa: 0

Grouped invariants ​

Exclusive to echidna (3)
  • iSpoke_repay
  • iSpoke_withdraw
  • invariant_supplySharePriceAndDrawnIndexMonotonic
Exclusive to foundry (0)

None.

Exclusive to medusa (0)

None.

Shared by all active fuzzers (3)
  • invariant_canary
  • invariant_shouldNotBecomeLiquidatable
  • invariant_totalBorrowedLessThanSupplied_v0

Top shared subsets (top 2 by size):

echidna, medusa (2)
  • assert_canary
  • iHub_mintFeeShares
foundry, medusa (1)
  • invariant_totalBorrowedLessThanSupplied_v1

Runner resource usage ​

  • Budget filter: 1.00h
  • Instances with metrics: 6
  • Total samples: 4289

Per-fuzzer medians (across instances) ​

FuzzerInstancesCPU active avg (%)CPU active peak (%)Memory used avg (GiB)Memory used peak (GiB)Memory used avg (%)Memory used peak (%)
echidna292.0598.4418.1719.2559.2862.81
foundry254.5857.451.153.673.7511.96
medusa294.0399.761.853.676.0511.96

Instance stats ​

InstanceFuzzerSamplesDuration (h)CPU active avg (%)CPU active peak (%)Memory avg (GiB)Memory peak (GiB)Memory avg (%)Memory peak (%)
i-03968ad54100faf3e-echidna-v2.3.1echidna7131.0092.0198.4018.1619.1959.2662.61
i-0506621062945e3de-echidna-v2.3.1echidna7131.0092.0998.4818.1719.3159.2963.01
i-001ed8dd673ffe059-foundry-git-344b476foundry7171.0054.5858.191.153.683.7611.99
i-093454c1bec9f4dec-foundry-git-344b476foundry7171.0054.5956.711.153.653.7511.93
i-06915aa3fced4e4ee-medusa-v1.4.1medusa7141.0094.0299.761.893.676.1611.97
i-06bc7f98414031c40-medusa-v1.4.1medusa7151.0094.0399.761.823.665.9411.96

Manifest ​

  • scfuzzbench_commit: 8c16172a0c75d911e18a6673787aa648aaf3c0c0
  • target_repo_url: https://github.com/Recon-Fuzz/aave-v4-scfuzzbench
  • target_commit: v0.5.6-recon
  • benchmark_type: property
  • instance_type: c6a.4xlarge
  • instances_per_fuzzer: 2
  • timeout_hours: 1
  • aws_region: us-east-1
  • ubuntu_ami_id: ami-04eaa218f1349d88b
  • 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 ​

Fully static. Generated in CI from S3 run artifacts.