| {"bit_precise_leg": true, "certificate_replays_without_solver": true, "defect_class": "A", "elimination_certificate": "{\"claim\": {\"defect_class\": \"A\", \"proves\": \"every violating input is eliminated by the corrected guard\", \"widths\": {\"index\": 16, \"size\": 16}}, \"combination\": \"1 <= 0\", \"constraints\": [{\"form\": \"index - size + 1 <= 0\", \"label\": \"corrected: index < size\", \"multiplier\": 1}, {\"form\": \"- index + size <= 0\", \"label\": \"not safety: index >= size\", \"multiplier\": 1}], \"contradiction\": \"the combination has no variable terms and asserts 1 <= 0, which is false\", \"kind\": \"farkas-elimination\"}", "exploit_witness": "{\"index\": 2048, \"size\": 2048}", "incompleteness_witness": null, "is_demo": false, "legs_agree": true, "license": "Apache-2.0", "out_of_model": "[\"Witnesses wider than the modelled fields (e.g. ~96-bit composite offsets): the class model fixes field widths, so a defect expressible only at a larger width is not represented.\", \"Unsigned wrap-around arising from arithmetic performed *before* the guard is reached: the model begins at the guard, so a value already corrupted upstream is outside it.\"]", "strictly_stronger_than_unsound_guard": true, "title": "off-by-one index against a size", "total_width": 32, "verdict": "COMPLETE", "violating_region_measure": null, "widths": "{\"index\": 16, \"size\": 16}"} |
| {"bit_precise_leg": true, "certificate_replays_without_solver": true, "defect_class": "B", "elimination_certificate": "{\"claim\": {\"defect_class\": \"B\", \"proves\": \"every violating input is eliminated by the corrected guard\", \"widths\": {\"payload\": 16, \"record\": 17}}, \"combination\": \"1 <= 0\", \"constraints\": [{\"form\": \"payload - record + 8 <= 0\", \"label\": \"corrected: payload + 8 <= record\", \"multiplier\": 1}, {\"form\": \"- payload + record - 7 <= 0\", \"label\": \"not safety: payload + 8 > record\", \"multiplier\": 1}], \"contradiction\": \"the combination has no variable terms and asserts 1 <= 0, which is false\", \"kind\": \"farkas-elimination\"}", "exploit_witness": "{\"payload\": 65528, \"record\": 65534}", "incompleteness_witness": null, "is_demo": false, "legs_agree": true, "license": "Apache-2.0", "out_of_model": "[\"Witnesses wider than the modelled fields (e.g. ~96-bit composite offsets): the class model fixes field widths, so a defect expressible only at a larger width is not represented.\", \"Unsigned wrap-around arising from arithmetic performed *before* the guard is reached: the model begins at the guard, so a value already corrupted upstream is outside it.\"]", "strictly_stronger_than_unsound_guard": true, "title": "payload length against record length with a dropped header allowance", "total_width": 33, "verdict": "COMPLETE", "violating_region_measure": null, "widths": "{\"payload\": 16, \"record\": 17}"} |
| {"bit_precise_leg": true, "certificate_replays_without_solver": true, "defect_class": "C", "elimination_certificate": "{\"claim\": {\"defect_class\": \"C\", \"proves\": \"every violating input is eliminated by the corrected guard\", \"widths\": {\"base\": 5, \"sel\": 5}}, \"combination\": \"1 <= 0\", \"constraints\": [{\"form\": \"sel - 19 <= 0\", \"label\": \"corrected: sel < 20\", \"multiplier\": 1}, {\"form\": \"- sel + 20 <= 0\", \"label\": \"not safety: sel >= 20\", \"multiplier\": 1}], \"contradiction\": \"the combination has no variable terms and asserts 1 <= 0, which is false\", \"kind\": \"farkas-elimination\"}", "exploit_witness": "{\"base\": 0, \"sel\": 20}", "incompleteness_witness": null, "is_demo": false, "legs_agree": true, "license": "Apache-2.0", "out_of_model": "[\"Witnesses wider than the modelled fields (e.g. ~96-bit composite offsets): the class model fixes field widths, so a defect expressible only at a larger width is not represented.\", \"Unsigned wrap-around arising from arithmetic performed *before* the guard is reached: the model begins at the guard, so a value already corrupted upstream is outside it.\"]", "strictly_stronger_than_unsound_guard": true, "title": "bounded field missing an upper-bound test", "total_width": 10, "verdict": "COMPLETE", "violating_region_measure": 384, "widths": "{\"base\": 5, \"sel\": 5}"} |
| {"bit_precise_leg": false, "certificate_replays_without_solver": null, "defect_class": "A-badfix", "elimination_certificate": null, "exploit_witness": "{\"index\": 2048, \"size\": 2048}", "incompleteness_witness": "{\"index\": 3218, \"size\": 3218}", "is_demo": true, "legs_agree": null, "license": "Apache-2.0", "out_of_model": "[\"Witnesses wider than the modelled fields (e.g. ~96-bit composite offsets): the class model fixes field widths, so a defect expressible only at a larger width is not represented.\", \"Unsigned wrap-around arising from arithmetic performed *before* the guard is reached: the model begins at the guard, so a value already corrupted upstream is outside it.\"]", "strictly_stronger_than_unsound_guard": true, "title": "off-by-one 'fixed' by excluding one witness (DEMO: incomplete)", "total_width": 32, "verdict": "INCOMPLETE", "violating_region_measure": null, "widths": "{\"index\": 16, \"size\": 16}"} |
| {"bit_precise_leg": true, "certificate_replays_without_solver": null, "defect_class": "A-vacuous", "elimination_certificate": null, "exploit_witness": "{\"index\": 2048, \"size\": 2048}", "incompleteness_witness": null, "is_demo": true, "legs_agree": null, "license": "Apache-2.0", "out_of_model": "[\"Witnesses wider than the modelled fields (e.g. ~96-bit composite offsets): the class model fixes field widths, so a defect expressible only at a larger width is not represented.\", \"Unsigned wrap-around arising from arithmetic performed *before* the guard is reached: the model begins at the guard, so a value already corrupted upstream is outside it.\"]", "strictly_stronger_than_unsound_guard": null, "title": "off-by-one 'fixed' by rejecting all input (DEMO: vacuous)", "total_width": 32, "verdict": "VACUOUS", "violating_region_measure": null, "widths": "{\"index\": 16, \"size\": 16}"} |
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