{
  "experiment": "ci-run",
  "generated_at": "2026-04-29 16:12 UTC",
  "workload_docs": {
    "cedar-lean": [
      {
        "mutations": [
          "decimal_parse_negative_sign_preserved_84fe9c6_1"
        ],
        "tasks": [
          {
            "property": "DecimalParseNegativeSignPreserved",
            "witnesses": [
              {
                "test_fn": "witness_decimal_parse_negative_sign_preserved_case_neg_zero",
                "note": "minimal repro: \"-0.5\""
              }
            ]
          }
        ],
        "source": {
          "repo": "https://github.com/cedar-policy/cedar-spec",
          "commits": [
            "84fe9c6d4121f6fcb6b4f032cce0ae08f23ad8d4"
          ],
          "commit_subjects": [
            "Fix parsing of decimal literals (#799)"
          ],
          "prs": [
            799
          ],
          "summary": "Decimal.parse computed the result's sign from the parsed integer part\n(`if l ≥ 0 then add else subtract`). For inputs like \"-0.5\" the integer\npart is \"-0\", which `String.toInt?` returns as `0`, so the sign test\ntook the wrong branch and emitted `+0.5000` instead of `-0.5000`.\nThe fix tests the leading minus textually: `if !left.startsWith \"-\"`.\n"
        },
        "injection": {
          "kind": "patch",
          "files": [
            "cedar-lean/Cedar/Spec/Ext/Decimal.lean"
          ],
          "locations": [
            {
              "file": "cedar-lean/Cedar/Spec/Ext/Decimal.lean",
              "line": 59,
              "symbol": "Cedar.Spec.Ext.Decimal.parse"
            }
          ],
          "patch": "patches/decimal_parse_negative_sign_preserved_84fe9c6_1.patch"
        },
        "bug": {
          "short_name": "decimal_parse_negative_sign_preserved",
          "invariant": "If `Decimal.parse s = some d`, then a leading '-' in `s` must yield a non-positive `d` — i.e. textual sign is preserved through parsing.",
          "how_triggered": "Inferring sign from `l ≥ 0` instead of from the literal prefix `-` causes \"-0.<frac>\" inputs (whose integer part round-trips to 0) to be mis-signed: parse(\"-0.5\") returns `+0.5000`."
        }
      },
      {
        "mutations": [
          "decimal_parse_no_underscore_a0c5812_1"
        ],
        "tasks": [
          {
            "property": "DecimalParseNoUnderscore",
            "witnesses": [
              {
                "test_fn": "witness_decimal_parse_no_underscore_case_int_part",
                "note": "minimal repro: \"1_2.34\""
              }
            ]
          }
        ],
        "source": {
          "repo": "https://github.com/cedar-policy/cedar-spec",
          "commits": [
            "a0c5812f171bcf142e43dedf8518d94becb0e11b"
          ],
          "commit_subjects": [
            "fix behavior of Decimal.parse with underscores (#877)"
          ],
          "prs": [
            877
          ],
          "summary": "Lean's `String.toInt?`/`String.toNat?` silently accept `_` characters\n(`String.toInt? \"1_2\" = some 12`). Cedar's spec disallows underscores in\ndecimal literals; without a guard the parser leaked Lean's behavior and\nlet inputs like \"1_2.34\" parse to 12.3400. The fix introduced\n`toInt?'`/`toNat?'` wrappers in `Cedar.Spec.Ext.Util` that reject any\ninput containing `_` before delegating.\n"
        },
        "injection": {
          "kind": "patch",
          "files": [
            "cedar-lean/Cedar/Spec/Ext/Util.lean"
          ],
          "locations": [
            {
              "file": "cedar-lean/Cedar/Spec/Ext/Util.lean",
              "line": 12,
              "symbol": "Cedar.Spec.Ext.toInt?'"
            },
            {
              "file": "cedar-lean/Cedar/Spec/Ext/Util.lean",
              "line": 19,
              "symbol": "Cedar.Spec.Ext.toNat?'"
            }
          ],
          "patch": "patches/decimal_parse_no_underscore_a0c5812_1.patch"
        },
        "bug": {
          "short_name": "decimal_parse_no_underscore",
          "invariant": "If `Decimal.parse s = some _`, then `s` does not contain `_`.",
          "how_triggered": "Removing the `if str.contains '_' then .none else …` gates from `toInt?'`/`toNat?'` exposes Lean's lenient `String.toInt?` behavior to the parser, so `Decimal.parse \"1_2.34\"` returns `some 12.3400` instead of `none`."
        }
      },
      {
        "mutations": [
          "validator_action_entity_no_attrs_d7ab5ab_1"
        ],
        "tasks": [
          {
            "property": "ValidateActionEntityNoAttrs",
            "witnesses": [
              {
                "test_fn": "witness_validate_action_entity_no_attrs_case_action_with_attr",
                "note": "Action::\"a\" with attrs={x:1} — fix rejects, bug accepts"
              }
            ]
          }
        ],
        "source": {
          "repo": "https://github.com/cedar-policy/cedar-spec",
          "commits": [
            "d7ab5abeff0d55f23914b5f2257da8fe3e917002"
          ],
          "commit_subjects": [
            "Fix validator soundness when `updateSchema` is not used (#648)"
          ],
          "prs": [
            648
          ],
          "summary": "Validator soundness gap: `validateEntities` did not verify that action\nentities in the entity store have empty `attrs` (and empty `tags`)\nunless callers first invoked `updateSchema` to inject synthetic\nEntitySchemaEntries. Cedar's spec forbids action entities from carrying\nattributes — without the check, an ill-typed entity store passes\nvalidation, breaking the type-soundness assumption used by every\nauthorization theorem in `Thm/Validation/`. The fix folded the action\nchecks directly into `instanceOfSchemaEntry` (combining\n`instanceOfEntitySchema` and `instanceOfActionSchema` into the new\n`instanceOfSchema`), removing the `updateSchema` workaround entirely.\n"
        },
        "injection": {
          "kind": "patch",
          "files": [
            "cedar-lean/Cedar/Validation/RequestEntityValidator.lean"
          ],
          "locations": [
            {
              "file": "cedar-lean/Cedar/Validation/RequestEntityValidator.lean",
              "line": 132,
              "symbol": "Cedar.Validation.instanceOfSchema.instanceOfActionSchemaEntry"
            }
          ],
          "patch": "patches/validator_action_entity_no_attrs_d7ab5ab_1.patch"
        },
        "bug": {
          "short_name": "validator_action_entity_no_attrs",
          "invariant": "If `validateEntities schema entities = .ok ()`, then every action entity in `entities` (member of any environment's `acts`) has empty `attrs`.",
          "how_triggered": "Short-circuiting the `data.attrs == Map.empty` guard in `instanceOfActionSchemaEntry` (changing the test to `(data.attrs == Map.empty) || true`) accepts action entities with non-empty `attrs`. The witness installs `Action::\"a\"` with `{x: 1}` and observes `validateEntities` returning `.ok ()`."
        }
      },
      {
        "mutations": [
          "smt_encode_string_balanced_quotes_84708ca_1"
        ],
        "tasks": [
          {
            "property": "SmtEncodeStringBalancedQuotes",
            "witnesses": [
              {
                "test_fn": "witness_smt_encode_string_balanced_quotes_case_quote_in_middle",
                "note": "input \"x\\\"y\" — fix doubles the inner quote, bug emits malformed SMT"
              }
            ]
          }
        ],
        "source": {
          "repo": "https://github.com/cedar-policy/cedar-spec",
          "commits": [
            "84708ca6ab57d462306429d345b1414842330127"
          ],
          "commit_subjects": [
            "Fix SMT encoding of string literals (#640)"
          ],
          "prs": [
            640
          ],
          "summary": "The SMT encoder did not double `\"` characters inside string literals,\nviolating the SMT-LIB 2.7 standard which prescribes `\"` (a doubled quote)\nas the only escape sequence inside a string literal. Inputs containing\n`\"` produced malformed SMT, breaking symbolic verification soundness:\ndownstream solvers either reject the query or silently misparse it.\n\nThe fix added the doubling rule. Cedar-lean has since refactored\n`encodeString` to per-character encoding (also handling `\\\\` and\nnon-ASCII via `\\u{…}`), but the doubling step at the `\"` branch is\nstill load-bearing.\n"
        },
        "injection": {
          "kind": "patch",
          "files": [
            "cedar-lean/Cedar/SymCC/Encoder.lean"
          ],
          "locations": [
            {
              "file": "cedar-lean/Cedar/SymCC/Encoder.lean",
              "line": 170,
              "symbol": "Cedar.SymCC.encodeString"
            }
          ],
          "patch": "patches/smt_encode_string_balanced_quotes_84708ca_1.patch"
        },
        "bug": {
          "short_name": "smt_encode_string_balanced_quotes",
          "invariant": "For any string `s`, the SMT literal `\"…encodeString s…\"` contains an even number of `\"` characters (every literal `\"` inside is doubled).",
          "how_triggered": "Replacing `return \"\\\"\\\"\"` (doubled quote) with `return \"\\\"\"` (single quote) in the `c = '\"'` branch of `encodeString` lets a single `\"` leak through; the witness `x\"y` then encodes to `\"x\"y\"` (3 `\"` chars, odd) instead of `\"x\"\"y\"` (4, even)."
        }
      },
      {
        "mutations": [
          "validate_rejects_undeclared_entities_eb3bfff_1"
        ],
        "tasks": [
          {
            "property": "ValidateRejectsUndeclaredEntities",
            "witnesses": [
              {
                "test_fn": "witness_validate_rejects_undeclared_entities_case_unknown_principal",
                "note": "policy with `true || (principal == Foo::\"x\")`; fix rejects undeclared Foo, bug accepts"
              }
            ]
          }
        ],
        "source": {
          "repo": "https://github.com/cedar-policy/cedar-spec",
          "commits": [
            "eb3bfff4fcebff716ae86983ae78fd6407e13290"
          ],
          "commit_subjects": [
            "Make lean validator check entity type and action existence before type checking (#779)"
          ],
          "prs": [
            779
          ],
          "summary": "Validator entity-existence soundness gap. The Lean typechecker\nshort-circuits on type errors (e.g. on `true || expr`, it returns\n`bool .tt` without descending into `expr`), so a policy referencing an\nundeclared entity type inside a short-circuited subexpression passed\nLean validation while the Rust validator (which performs entity\nexistence as a separate pass) rejected it. The two validators\ndisagreed, breaking differential soundness.\n\nThe fix added `checkEntities`, an unconditional pre-pass at the top of\n`typecheckPolicyWithEnvironments` that traverses each policy's `Expr`\nand rejects any reference to an entity UID/type not declared in the\nschema.\n"
        },
        "injection": {
          "kind": "patch",
          "files": [
            "cedar-lean/Cedar/Validation/Validator.lean"
          ],
          "locations": [
            {
              "file": "cedar-lean/Cedar/Validation/Validator.lean",
              "line": 217,
              "symbol": "Cedar.Validation.typecheckPolicyWithEnvironments"
            }
          ],
          "patch": "patches/validate_rejects_undeclared_entities_eb3bfff_1.patch"
        },
        "bug": {
          "short_name": "validate_rejects_undeclared_entities",
          "invariant": "If `validate policies schema = .ok ()`, then for every policy `p` in `policies`, `checkEntities schema p.toExpr = .ok ()` — i.e. `validate` agrees with `checkEntities` on the entity-existence question.",
          "how_triggered": "Removing the `(checkEntities schema policy.toExpr).mapError ...` line from `typecheckPolicyWithEnvironments` lets the typechecker short-circuit through any reference to an undeclared entity. The witness encodes `permit(principal, action, resource) when { true || (principal == Foo::\"x\") };` — `true || …` types as `bool .tt` without inspecting the right operand, so `validate` returns `.ok ()` despite `Foo` being absent from the schema."
        }
      },
      {
        "mutations": [
          "validate_request_principal_exists_1a76346_1"
        ],
        "tasks": [
          {
            "property": "ValidateRequestPrincipalExists",
            "witnesses": [
              {
                "test_fn": "witness_validate_request_principal_exists_case_ghost_user",
                "note": "schema with Photo + Action::\"a\" applies-to-principal=[User], request with principal=User::\"ghost\"; fix rejects, bug accepts"
              }
            ]
          }
        ],
        "source": {
          "repo": "https://github.com/cedar-policy/cedar-spec",
          "commits": [
            "1a7634653370892318d14bd9213668bf23c022de"
          ],
          "commit_subjects": [
            "Add `Environment.WellFormed` as a new precondition for type checking and fix relevant proofs (#658)"
          ],
          "prs": [
            658
          ],
          "summary": "Request-validation soundness gap. Pre-#658, `instanceOfEntityType` only\nverified that the entity's literal type matched the expected request\ntype (and, for enum types, that the eid was a valid member). Non-enum\nentities passed regardless of whether they were declared anywhere in\nthe schema, so a 'ghost' principal like `User::\"ghost\"` matched a\nrequest type even when `User` had no entry in `env.ets`. Downstream\ntypecheckers then assume requests are well-formed, so the soundness gap\nsilently propagates to authorization decisions.\n\nThe fix added `Environment.WellFormed` as a precondition and reworked\n`instanceOfEntityType` to additionally require that the entity be\npresent in either `env.ets` or `env.acts`.\n"
        },
        "injection": {
          "kind": "patch",
          "files": [
            "cedar-lean/Cedar/Validation/RequestEntityValidator.lean"
          ],
          "locations": [
            {
              "file": "cedar-lean/Cedar/Validation/RequestEntityValidator.lean",
              "line": 52,
              "symbol": "Cedar.Validation.instanceOfEntityType"
            }
          ],
          "patch": "patches/validate_request_principal_exists_1a76346_1.patch"
        },
        "bug": {
          "short_name": "validate_request_principal_exists",
          "invariant": "If `validateRequest schema request = .ok ()`, then `request.principal` is declared in the schema (either `schema.ets.isValidEntityUID` or `schema.acts.contains`).",
          "how_triggered": "Replacing the existence check `(env.ets.isValidEntityUID e || env.acts.contains e)` in `instanceOfEntityType` with `true` collapses the second conjunct, so any UID whose entity type matches the request type passes — including `User::\"ghost\"` against a schema that has no `User` entity declared."
        }
      },
      {
        "mutations": [
          "schema_well_formed_no_singleton_bools_e785e2e_1"
        ],
        "tasks": [
          {
            "property": "SchemaWellFormedNoSingletonBools",
            "witnesses": [
              {
                "test_fn": "witness_schema_well_formed_no_singleton_bools_case_attr_bool_tt",
                "note": "schema declares User.flag : (.bool .tt) — fix rejects via validateLifted, bug accepts"
              }
            ]
          }
        ],
        "source": {
          "repo": "https://github.com/cedar-policy/cedar-spec",
          "commits": [
            "e785e2ed37e0ec9f4c4ecb42f84f794c4735b11f"
          ],
          "commit_subjects": [
            "Require that well-formed `TypeEnv` does not have singleton Bool types (#689)"
          ],
          "prs": [
            689
          ],
          "summary": "TypeEnv well-formedness gap. The Cedar typechecker's soundness proofs\nassume every schema-level type is *lifted* — i.e. boolean types appear\nonly as `.bool .anyBool`, never as the singleton `.bool .tt` or\n`.bool .ff`. Without enforcement, a malicious schema declaring an\nattribute as `(.bool .tt)` would pass `Schema.validateWellFormed`, then\nthe typechecker would prove the literal-specific judgement (`flag :\nbool .tt`) about user-provided attribute data — unsound under the\noperational semantics, since the user can put `flag = false` in their\nentity.\n\nThe fix added `CedarType.validateLifted` and called it on every schema\nentry's attribute and tag types from inside\n`StandardSchemaEntry.validateWellFormed` and\n`ActionSchemaEntry.validateWellFormed`.\n"
        },
        "injection": {
          "kind": "patch",
          "files": [
            "cedar-lean/Cedar/Validation/EnvironmentValidator.lean"
          ],
          "locations": [
            {
              "file": "cedar-lean/Cedar/Validation/EnvironmentValidator.lean",
              "line": 126,
              "symbol": "Cedar.Validation.StandardSchemaEntry.validateWellFormed"
            }
          ],
          "patch": "patches/schema_well_formed_no_singleton_bools_e785e2e_1.patch"
        },
        "bug": {
          "short_name": "schema_well_formed_no_singleton_bools",
          "invariant": "If `Schema.validateWellFormed schema = .ok ()`, then for every standard entity entry in `schema.ets`, the attribute record passes `CedarType.validateLifted` (no `.bool .tt` / `.bool .ff` nested anywhere).",
          "how_triggered": "Removing the `(CedarType.record entry.attrs).validateLifted` line from `StandardSchemaEntry.validateWellFormed` lets the validator accept entities whose attributes have singleton-bool types. The witness builds a schema with `User.flag : (.bool .tt)` and observes `Schema.validateWellFormed` returning `.ok ()` instead of `\"bool type is not lifted\"`."
        }
      },
      {
        "mutations": [
          "encoder_define_entity_rejects_non_member_fe5a046_1"
        ],
        "tasks": [
          {
            "property": "DefineEntityRejectsNonMember",
            "witnesses": [
              {
                "test_fn": "witness_define_entity_rejects_non_member_case_zzz",
                "note": "User enum [alice, bob], call defineEntity for User::\"zzz\"; fix throws, bug returns U_enc_m2"
              }
            ]
          }
        ],
        "source": {
          "repo": "https://github.com/cedar-policy/cedar-spec",
          "commits": [
            "fe5a0464ef36716ff37ced2d7a4e62ef91a23d7e"
          ],
          "commit_subjects": [
            "Fix escaping for euid in term protobuf (#855)"
          ],
          "prs": [
            855
          ],
          "summary": "SymCC encoder soundness gap. Pre-#855, `defineEntity` looked up an\nenum member's index via `members.idxOf entity.eid` (the non-Option\nvariant). For an entity whose type has a registered enum but whose\n`eid` is *not* a declared member, `List.idxOf` returns\n`members.length` — an index outside the legal range. The encoder\nthen emits `{tyEnc}_m{members.length}` as the SMT identifier,\nreferencing a member that does not exist. Solvers either return\nspurious UNSAT or accept an unsound model; either way the symbolic\nanalysis loses its meaning.\n\nThe fix replaced `idxOf` with `idxOf?` and explicitly threw an\n`IO.userError` on the `none` case.\n"
        },
        "injection": {
          "kind": "patch",
          "files": [
            "cedar-lean/Cedar/SymCC/Encoder.lean"
          ],
          "locations": [
            {
              "file": "cedar-lean/Cedar/SymCC/Encoder.lean",
              "line": 269,
              "symbol": "Cedar.SymCC.Encoder.defineEntity"
            }
          ],
          "patch": "patches/encoder_define_entity_rejects_non_member_fe5a046_1.patch"
        },
        "bug": {
          "short_name": "encoder_define_entity_rejects_non_member",
          "invariant": "If `defineEntity tyEnc entity` returns `Ok` for an entity whose type is registered as an enum, then `entity.eid` is one of the declared members.",
          "how_triggered": "Replacing the inner `match members.idxOf? entity.eid with | .some idx => … | .none => throw …` with the single line `return s!\"{enumId tyEnc (members.idxOf entity.eid)}\"` lets `defineEntity` succeed for non-member eids: `List.idxOf` returns `members.length`, producing the bogus identifier `U_enc_m2` for `[\"alice\", \"bob\"]`-membered `User::\"zzz\"`."
        }
      },
      {
        "mutations": [
          "validate_with_level_accepts_c186f0f_1"
        ],
        "tasks": [
          {
            "property": "ValidateWithLevelAccepts",
            "witnesses": [
              {
                "test_fn": "witness_validate_with_level_accepts_case_action_in_action",
                "note": "policy `permit when { Action::\"a\" in Action::\"a\" }`, level=1; fix accepts, bug rejects with .levelError"
              }
            ]
          }
        ],
        "source": {
          "repo": "https://github.com/cedar-policy/cedar-spec",
          "commits": [
            "c186f0f4d34c7f244836279e0b4aa6535e1ce252"
          ],
          "commit_subjects": [
            "Update level checking to allow access to literals equal to environment action (#573)"
          ],
          "prs": [
            573
          ],
          "summary": "Level-checker completeness gap. Pre-#573, `TypedExpr.checkEntityAccessLevel`\nhad no case for literal entity UIDs in entity-access positions, so the\nfallthrough `_, _ => false` rejected expressions like `Action::\"a\" in\nAction::\"a\"` (where the action literal is the left operand of `.mem`).\nPolicies that used a literal action in any entity-access position\nfailed level checking with `.levelError` even though they were\nsemantically valid. Rust's level checker accepted them, breaking\nLean/Rust differential parity.\n\nThe fix added the case `.lit (.entityUID euid) _, _ => euid == env.reqty.action`\nso a literal matching the environment's action passes level checking.\nThis is a *completeness* fix (the buggy validator is over-strict, not\nunsound), but ETNA's pattern still applies: the witness asserts a\nknown-good policy is accepted, and the variant patch causes the witness\nto fail with `.levelError`.\n"
        },
        "injection": {
          "kind": "patch",
          "files": [
            "cedar-lean/Cedar/Validation/Levels.lean"
          ],
          "locations": [
            {
              "file": "cedar-lean/Cedar/Validation/Levels.lean",
              "line": 61,
              "symbol": "Cedar.Validation.TypedExpr.checkEntityAccessLevel"
            }
          ],
          "patch": "patches/validate_with_level_accepts_c186f0f_1.patch"
        },
        "bug": {
          "short_name": "validate_with_level_accepts",
          "invariant": "For the chosen `(policies, schema, level)` fixture, `validateWithLevel` returns `.ok ()`. (A unit-test-style invariant: the level checker should not over-reject literal action references.)",
          "how_triggered": "Replacing `euid == env.reqty.action` with `false` in the literal-entity case of `checkEntityAccessLevel` makes the level checker reject `Action::\"a\" in Action::\"a\"`. The witness policy's level check then fails with `.levelError`."
        }
      }
    ]
  },
  "metrics": [
    {
      "experiment": "ci-run",
      "workload": "cedar-lean",
      "language": "lean",
      "property": "DecimalParseNegativeSignPreserved",
      "mutations": [
        "decimal_parse_negative_sign_preserved_84fe9c6_1"
      ],
      "mode": "solve",
      "trial": 0,
      "timeout": 60.0,
      "timestamp": "2026-04-29T16:10:04.814300010+00:00",
      "status": "aborted",
      "tests": 0,
      "discards": 0,
      "time": "0us",
      "error": "Unknown tool: ${strategy}",
      "tool": "${strategy}",
      "counterexample": null,
      "hash": "f814787cd359f35959948bd01d766e7f28cdb8c0"
    },
    {
      "experiment": "ci-run",
      "workload": "cedar-lean",
      "language": "lean",
      "property": "DecimalParseNegativeSignPreserved",
      "mutations": [
        "decimal_parse_negative_sign_preserved_84fe9c6_1"
      ],
      "mode": "solve",
      "trial": 1,
      "timeout": 60.0,
      "timestamp": "2026-04-29T16:10:05.306916866+00:00",
      "status": "aborted",
      "tests": 0,
      "discards": 0,
      "time": "0us",
      "error": "Unknown tool: ${strategy}",
      "tool": "${strategy}",
      "counterexample": null,
      "hash": "f814787cd359f35959948bd01d766e7f28cdb8c0"
    },
    {
      "experiment": "ci-run",
      "workload": "cedar-lean",
      "language": "lean",
      "property": "DecimalParseNegativeSignPreserved",
      "mutations": [
        "decimal_parse_negative_sign_preserved_84fe9c6_1"
      ],
      "mode": "solve",
      "trial": 2,
      "timeout": 60.0,
      "timestamp": "2026-04-29T16:10:05.798758657+00:00",
      "status": "aborted",
      "tests": 0,
      "discards": 0,
      "time": "0us",
      "error": "Unknown tool: ${strategy}",
      "tool": "${strategy}",
      "counterexample": null,
      "hash": "f814787cd359f35959948bd01d766e7f28cdb8c0"
    },
    {
      "experiment": "ci-run",
      "workload": "cedar-lean",
      "language": "lean",
      "property": "DecimalParseNegativeSignPreserved",
      "mutations": [
        "decimal_parse_negative_sign_preserved_84fe9c6_1"
      ],
      "mode": "solve",
      "trial": 3,
      "timeout": 60.0,
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