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FA-50481 / Raster clipping / Open access

Named mask registry: missing full · case 01

Binding an undefined mask exposes the full surface instead of empty coverage.

Verified by executionVariant 1 · 12 checks per implementationDownload source bundle ↓JSON ↗

ROOT CAUSE

Binding an undefined mask exposes the full surface instead of empty coverage.

VERIFIED REPAIR

Apply the documented state transition at missing full. Named clip masks are immutable snapshots clipped to target extent. Bind selects a name, edits replace the named mask, deletion of the active mask makes drawing empty. Renaming preserves active binding; clone is independent; reset clears registry and active binding.

Unsuccessful approach: Distinguishing no binding from an undefined name still exposes full coverage for undefined names.

Case contract

Named clip masks are immutable snapshots clipped to target extent. Bind selects a name, edits replace the named mask, deletion of the active mask makes drawing empty. Renaming preserves active binding; clone is independent; reset clears registry and active binding.

Why this case matters

Raster clip state can leak coverage across draws even when every individual region is valid.

1 / The failure

Exit 1
"""Failure Map reference implementation. Python standard library only."""
import json

N = 1
observations = []
def solve(commands, size):
    full=set(range(size))
    masks={}
    active=None
    out=[]
    for cmd in commands:
        op=cmd[0]
        if op=='define': masks[cmd[1]]=set(cmd[2]) & full
        elif op=='bind': active=cmd[1]
        elif op=='delete': masks.pop(cmd[1],None)
        elif op=='clone': masks[cmd[2]]=set(masks.get(cmd[1],set()))
        elif op=='subtract' and cmd[1] in masks: masks[cmd[1]]-=set(cmd[2])
        elif op=='rename' and cmd[1] in masks:
            masks[cmd[2]]=masks.pop(cmd[1])
            if active==cmd[1]: active=cmd[2]
        elif op=='reset': masks={}; active=None
        elif op=='draw': out.append(sorted(masks.get(active,full)))
    return out
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
if N == 1:
    check('explicit sequence 0', solve([['define', 'a', [0, 99, -1]], ['bind', 'a'], ['draw']], 4), [[0]])
    check('explicit sequence 1', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['draw'], ['bind', 'b'], ['draw']], 4), [[0], [1]])
    check('explicit sequence 2', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['delete', 'b'], ['draw']], 4), [[0]])
    check('explicit sequence 3', solve([['define', 'a', [0, 1]], ['clone', 'a', 'b'], ['subtract', 'a', [0]], ['bind', 'b'], ['draw'], ['bind', 'a'], ['draw']], 4), [[0, 1], [1]])
    check('explicit sequence 4', solve([['define', 'a', [0]], ['bind', 'a'], ['rename', 'a', 'b'], ['draw'], ['bind', 'a'], ['draw']], 4), [[0], []])
    check('explicit sequence 5', solve([['define', 'a', [0]], ['reset'], ['bind', 'a'], ['draw']], 4), [[]])
    check('explicit sequence 6', solve([['bind', 'missing'], ['draw']], 4), [[]])
    check('explicit sequence 7', solve([['define', 'a', [0]], ['define', 'a', [2]], ['bind', 'a'], ['draw']], 4), [[2]])
    check('explicit sequence 8', solve([['define', 'e', []], ['bind', 'e'], ['draw']], 4), [[]])
    check('explicit sequence 9', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['rename', 'b', 'c'], ['draw']], 4), [[0]])
    check('explicit sequence 10', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['reset'], ['bind', 'b'], ['draw']], 4), [[]])
    check('explicit sequence 11', solve([['define', 'a', [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]], ['bind', 'a'], ['draw']], 4), [[0, 1, 2, 3]])
if N == 2:
    check('explicit sequence 0', solve([['define', 'a', [0, 99, -1]], ['bind', 'a'], ['draw']], 5), [[0]])
    check('explicit sequence 1', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['draw'], ['bind', 'b'], ['draw']], 5), [[0], [1]])
    check('explicit sequence 2', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['delete', 'b'], ['draw']], 5), [[0]])
    check('explicit sequence 3', solve([['define', 'a', [0, 1]], ['clone', 'a', 'b'], ['subtract', 'a', [0]], ['bind', 'b'], ['draw'], ['bind', 'a'], ['draw']], 5), [[0, 1], [1]])
    check('explicit sequence 4', solve([['define', 'a', [0]], ['bind', 'a'], ['rename', 'a', 'b'], ['draw'], ['bind', 'a'], ['draw']], 5), [[0], []])
    check('explicit sequence 5', solve([['define', 'a', [0]], ['reset'], ['bind', 'a'], ['draw']], 5), [[]])
    check('explicit sequence 6', solve([['bind', 'missing'], ['draw']], 5), [[]])
    check('explicit sequence 7', solve([['define', 'a', [0]], ['define', 'a', [2]], ['bind', 'a'], ['draw']], 5), [[2]])
    check('explicit sequence 8', solve([['define', 'e', []], ['bind', 'e'], ['draw']], 5), [[]])
    check('explicit sequence 9', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['rename', 'b', 'c'], ['draw']], 5), [[0]])
    check('explicit sequence 10', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['reset'], ['bind', 'b'], ['draw']], 5), [[]])
    check('explicit sequence 11', solve([['define', 'a', [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]], ['bind', 'a'], ['draw']], 5), [[0, 1, 2, 3, 4]])
if N == 3:
    check('explicit sequence 0', solve([['define', 'a', [0, 99, -1]], ['bind', 'a'], ['draw']], 6), [[0]])
    check('explicit sequence 1', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['draw'], ['bind', 'b'], ['draw']], 6), [[0], [1]])
    check('explicit sequence 2', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['delete', 'b'], ['draw']], 6), [[0]])
    check('explicit sequence 3', solve([['define', 'a', [0, 1]], ['clone', 'a', 'b'], ['subtract', 'a', [0]], ['bind', 'b'], ['draw'], ['bind', 'a'], ['draw']], 6), [[0, 1], [1]])
    check('explicit sequence 4', solve([['define', 'a', [0]], ['bind', 'a'], ['rename', 'a', 'b'], ['draw'], ['bind', 'a'], ['draw']], 6), [[0], []])
    check('explicit sequence 5', solve([['define', 'a', [0]], ['reset'], ['bind', 'a'], ['draw']], 6), [[]])
    check('explicit sequence 6', solve([['bind', 'missing'], ['draw']], 6), [[]])
    check('explicit sequence 7', solve([['define', 'a', [0]], ['define', 'a', [2]], ['bind', 'a'], ['draw']], 6), [[2]])
    check('explicit sequence 8', solve([['define', 'e', []], ['bind', 'e'], ['draw']], 6), [[]])
    check('explicit sequence 9', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['rename', 'b', 'c'], ['draw']], 6), [[0]])
    check('explicit sequence 10', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['reset'], ['bind', 'b'], ['draw']], 6), [[]])
    check('explicit sequence 11', solve([['define', 'a', [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]], ['bind', 'a'], ['draw']], 6), [[0, 1, 2, 3, 4, 5]])
if N == 4:
    check('explicit sequence 0', solve([['define', 'a', [0, 99, -1]], ['bind', 'a'], ['draw']], 7), [[0]])
    check('explicit sequence 1', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['draw'], ['bind', 'b'], ['draw']], 7), [[0], [1]])
    check('explicit sequence 2', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['delete', 'b'], ['draw']], 7), [[0]])
    check('explicit sequence 3', solve([['define', 'a', [0, 1]], ['clone', 'a', 'b'], ['subtract', 'a', [0]], ['bind', 'b'], ['draw'], ['bind', 'a'], ['draw']], 7), [[0, 1], [1]])
    check('explicit sequence 4', solve([['define', 'a', [0]], ['bind', 'a'], ['rename', 'a', 'b'], ['draw'], ['bind', 'a'], ['draw']], 7), [[0], []])
    check('explicit sequence 5', solve([['define', 'a', [0]], ['reset'], ['bind', 'a'], ['draw']], 7), [[]])
    check('explicit sequence 6', solve([['bind', 'missing'], ['draw']], 7), [[]])
    check('explicit sequence 7', solve([['define', 'a', [0]], ['define', 'a', [2]], ['bind', 'a'], ['draw']], 7), [[2]])
    check('explicit sequence 8', solve([['define', 'e', []], ['bind', 'e'], ['draw']], 7), [[]])
    check('explicit sequence 9', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['rename', 'b', 'c'], ['draw']], 7), [[0]])
    check('explicit sequence 10', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['reset'], ['bind', 'b'], ['draw']], 7), [[]])
    check('explicit sequence 11', solve([['define', 'a', [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]], ['bind', 'a'], ['draw']], 7), [[0, 1, 2, 3, 4, 5, 6]])
if N == 5:
    check('explicit sequence 0', solve([['define', 'a', [0, 99, -1]], ['bind', 'a'], ['draw']], 8), [[0]])
    check('explicit sequence 1', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['draw'], ['bind', 'b'], ['draw']], 8), [[0], [1]])
    check('explicit sequence 2', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['delete', 'b'], ['draw']], 8), [[0]])
    check('explicit sequence 3', solve([['define', 'a', [0, 1]], ['clone', 'a', 'b'], ['subtract', 'a', [0]], ['bind', 'b'], ['draw'], ['bind', 'a'], ['draw']], 8), [[0, 1], [1]])
    check('explicit sequence 4', solve([['define', 'a', [0]], ['bind', 'a'], ['rename', 'a', 'b'], ['draw'], ['bind', 'a'], ['draw']], 8), [[0], []])
    check('explicit sequence 5', solve([['define', 'a', [0]], ['reset'], ['bind', 'a'], ['draw']], 8), [[]])
    check('explicit sequence 6', solve([['bind', 'missing'], ['draw']], 8), [[]])
    check('explicit sequence 7', solve([['define', 'a', [0]], ['define', 'a', [2]], ['bind', 'a'], ['draw']], 8), [[2]])
    check('explicit sequence 8', solve([['define', 'e', []], ['bind', 'e'], ['draw']], 8), [[]])
    check('explicit sequence 9', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['rename', 'b', 'c'], ['draw']], 8), [[0]])
    check('explicit sequence 10', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['reset'], ['bind', 'b'], ['draw']], 8), [[]])
    check('explicit sequence 11', solve([['define', 'a', [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]], ['bind', 'a'], ['draw']], 8), [[0, 1, 2, 3, 4, 5, 6, 7]])
print(json.dumps({"observations": observations, "passed": all(x["passed"] for x in observations)}, ensure_ascii=False))
raise SystemExit(0 if all(x["passed"] for x in observations) else 1)
Boundary fixtureActualExpectedOutcome
explicit sequence 0[[0]][[0]]Passed
explicit sequence 1[[0], [1]][[0], [1]]Passed
explicit sequence 2[[0]][[0]]Passed
explicit sequence 3[[0, 1], [1]][[0, 1], [1]]Passed
explicit sequence 4[[0], [0, 1, 2, 3]][[0], []]Failed
explicit sequence 5[[0, 1, 2, 3]][[]]Failed
explicit sequence 6[[0, 1, 2, 3]][[]]Failed
explicit sequence 7[[2]][[2]]Passed
explicit sequence 8[[]][[]]Passed
explicit sequence 9[[0]][[0]]Passed
explicit sequence 10[[0, 1, 2, 3]][[]]Failed
explicit sequence 11[[0, 1, 2, 3]][[0, 1, 2, 3]]Passed

SHA-256 / 16174437c717e9bf1a71ef0fb729941b2e7180652ddb9be5f6e03c963faf5e7a

2 / The unsuccessful fix

Exit 1
"""Failure Map reference implementation. Python standard library only."""
import json

N = 1
observations = []
def solve(commands, size):
    full=set(range(size))
    masks={}
    active=None
    out=[]
    for cmd in commands:
        op=cmd[0]
        if op=='define': masks[cmd[1]]=set(cmd[2]) & full
        elif op=='bind': active=cmd[1]
        elif op=='delete': masks.pop(cmd[1],None)
        elif op=='clone': masks[cmd[2]]=set(masks.get(cmd[1],set()))
        elif op=='subtract' and cmd[1] in masks: masks[cmd[1]]-=set(cmd[2])
        elif op=='rename' and cmd[1] in masks:
            masks[cmd[2]]=masks.pop(cmd[1])
            if active==cmd[1]: active=cmd[2]
        elif op=='reset': masks={}; active=None
        elif op=='draw': out.append(sorted(masks.get(active,full if active is not None else set())))
    return out
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
if N == 1:
    check('explicit sequence 0', solve([['define', 'a', [0, 99, -1]], ['bind', 'a'], ['draw']], 4), [[0]])
    check('explicit sequence 1', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['draw'], ['bind', 'b'], ['draw']], 4), [[0], [1]])
    check('explicit sequence 2', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['delete', 'b'], ['draw']], 4), [[0]])
    check('explicit sequence 3', solve([['define', 'a', [0, 1]], ['clone', 'a', 'b'], ['subtract', 'a', [0]], ['bind', 'b'], ['draw'], ['bind', 'a'], ['draw']], 4), [[0, 1], [1]])
    check('explicit sequence 4', solve([['define', 'a', [0]], ['bind', 'a'], ['rename', 'a', 'b'], ['draw'], ['bind', 'a'], ['draw']], 4), [[0], []])
    check('explicit sequence 5', solve([['define', 'a', [0]], ['reset'], ['bind', 'a'], ['draw']], 4), [[]])
    check('explicit sequence 6', solve([['bind', 'missing'], ['draw']], 4), [[]])
    check('explicit sequence 7', solve([['define', 'a', [0]], ['define', 'a', [2]], ['bind', 'a'], ['draw']], 4), [[2]])
    check('explicit sequence 8', solve([['define', 'e', []], ['bind', 'e'], ['draw']], 4), [[]])
    check('explicit sequence 9', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['rename', 'b', 'c'], ['draw']], 4), [[0]])
    check('explicit sequence 10', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['reset'], ['bind', 'b'], ['draw']], 4), [[]])
    check('explicit sequence 11', solve([['define', 'a', [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]], ['bind', 'a'], ['draw']], 4), [[0, 1, 2, 3]])
if N == 2:
    check('explicit sequence 0', solve([['define', 'a', [0, 99, -1]], ['bind', 'a'], ['draw']], 5), [[0]])
    check('explicit sequence 1', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['draw'], ['bind', 'b'], ['draw']], 5), [[0], [1]])
    check('explicit sequence 2', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['delete', 'b'], ['draw']], 5), [[0]])
    check('explicit sequence 3', solve([['define', 'a', [0, 1]], ['clone', 'a', 'b'], ['subtract', 'a', [0]], ['bind', 'b'], ['draw'], ['bind', 'a'], ['draw']], 5), [[0, 1], [1]])
    check('explicit sequence 4', solve([['define', 'a', [0]], ['bind', 'a'], ['rename', 'a', 'b'], ['draw'], ['bind', 'a'], ['draw']], 5), [[0], []])
    check('explicit sequence 5', solve([['define', 'a', [0]], ['reset'], ['bind', 'a'], ['draw']], 5), [[]])
    check('explicit sequence 6', solve([['bind', 'missing'], ['draw']], 5), [[]])
    check('explicit sequence 7', solve([['define', 'a', [0]], ['define', 'a', [2]], ['bind', 'a'], ['draw']], 5), [[2]])
    check('explicit sequence 8', solve([['define', 'e', []], ['bind', 'e'], ['draw']], 5), [[]])
    check('explicit sequence 9', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['rename', 'b', 'c'], ['draw']], 5), [[0]])
    check('explicit sequence 10', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['reset'], ['bind', 'b'], ['draw']], 5), [[]])
    check('explicit sequence 11', solve([['define', 'a', [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]], ['bind', 'a'], ['draw']], 5), [[0, 1, 2, 3, 4]])
if N == 3:
    check('explicit sequence 0', solve([['define', 'a', [0, 99, -1]], ['bind', 'a'], ['draw']], 6), [[0]])
    check('explicit sequence 1', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['draw'], ['bind', 'b'], ['draw']], 6), [[0], [1]])
    check('explicit sequence 2', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['delete', 'b'], ['draw']], 6), [[0]])
    check('explicit sequence 3', solve([['define', 'a', [0, 1]], ['clone', 'a', 'b'], ['subtract', 'a', [0]], ['bind', 'b'], ['draw'], ['bind', 'a'], ['draw']], 6), [[0, 1], [1]])
    check('explicit sequence 4', solve([['define', 'a', [0]], ['bind', 'a'], ['rename', 'a', 'b'], ['draw'], ['bind', 'a'], ['draw']], 6), [[0], []])
    check('explicit sequence 5', solve([['define', 'a', [0]], ['reset'], ['bind', 'a'], ['draw']], 6), [[]])
    check('explicit sequence 6', solve([['bind', 'missing'], ['draw']], 6), [[]])
    check('explicit sequence 7', solve([['define', 'a', [0]], ['define', 'a', [2]], ['bind', 'a'], ['draw']], 6), [[2]])
    check('explicit sequence 8', solve([['define', 'e', []], ['bind', 'e'], ['draw']], 6), [[]])
    check('explicit sequence 9', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['rename', 'b', 'c'], ['draw']], 6), [[0]])
    check('explicit sequence 10', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['reset'], ['bind', 'b'], ['draw']], 6), [[]])
    check('explicit sequence 11', solve([['define', 'a', [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]], ['bind', 'a'], ['draw']], 6), [[0, 1, 2, 3, 4, 5]])
if N == 4:
    check('explicit sequence 0', solve([['define', 'a', [0, 99, -1]], ['bind', 'a'], ['draw']], 7), [[0]])
    check('explicit sequence 1', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['draw'], ['bind', 'b'], ['draw']], 7), [[0], [1]])
    check('explicit sequence 2', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['delete', 'b'], ['draw']], 7), [[0]])
    check('explicit sequence 3', solve([['define', 'a', [0, 1]], ['clone', 'a', 'b'], ['subtract', 'a', [0]], ['bind', 'b'], ['draw'], ['bind', 'a'], ['draw']], 7), [[0, 1], [1]])
    check('explicit sequence 4', solve([['define', 'a', [0]], ['bind', 'a'], ['rename', 'a', 'b'], ['draw'], ['bind', 'a'], ['draw']], 7), [[0], []])
    check('explicit sequence 5', solve([['define', 'a', [0]], ['reset'], ['bind', 'a'], ['draw']], 7), [[]])
    check('explicit sequence 6', solve([['bind', 'missing'], ['draw']], 7), [[]])
    check('explicit sequence 7', solve([['define', 'a', [0]], ['define', 'a', [2]], ['bind', 'a'], ['draw']], 7), [[2]])
    check('explicit sequence 8', solve([['define', 'e', []], ['bind', 'e'], ['draw']], 7), [[]])
    check('explicit sequence 9', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['rename', 'b', 'c'], ['draw']], 7), [[0]])
    check('explicit sequence 10', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['reset'], ['bind', 'b'], ['draw']], 7), [[]])
    check('explicit sequence 11', solve([['define', 'a', [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]], ['bind', 'a'], ['draw']], 7), [[0, 1, 2, 3, 4, 5, 6]])
if N == 5:
    check('explicit sequence 0', solve([['define', 'a', [0, 99, -1]], ['bind', 'a'], ['draw']], 8), [[0]])
    check('explicit sequence 1', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['draw'], ['bind', 'b'], ['draw']], 8), [[0], [1]])
    check('explicit sequence 2', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['delete', 'b'], ['draw']], 8), [[0]])
    check('explicit sequence 3', solve([['define', 'a', [0, 1]], ['clone', 'a', 'b'], ['subtract', 'a', [0]], ['bind', 'b'], ['draw'], ['bind', 'a'], ['draw']], 8), [[0, 1], [1]])
    check('explicit sequence 4', solve([['define', 'a', [0]], ['bind', 'a'], ['rename', 'a', 'b'], ['draw'], ['bind', 'a'], ['draw']], 8), [[0], []])
    check('explicit sequence 5', solve([['define', 'a', [0]], ['reset'], ['bind', 'a'], ['draw']], 8), [[]])
    check('explicit sequence 6', solve([['bind', 'missing'], ['draw']], 8), [[]])
    check('explicit sequence 7', solve([['define', 'a', [0]], ['define', 'a', [2]], ['bind', 'a'], ['draw']], 8), [[2]])
    check('explicit sequence 8', solve([['define', 'e', []], ['bind', 'e'], ['draw']], 8), [[]])
    check('explicit sequence 9', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['rename', 'b', 'c'], ['draw']], 8), [[0]])
    check('explicit sequence 10', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['reset'], ['bind', 'b'], ['draw']], 8), [[]])
    check('explicit sequence 11', solve([['define', 'a', [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]], ['bind', 'a'], ['draw']], 8), [[0, 1, 2, 3, 4, 5, 6, 7]])
print(json.dumps({"observations": observations, "passed": all(x["passed"] for x in observations)}, ensure_ascii=False))
raise SystemExit(0 if all(x["passed"] for x in observations) else 1)
Boundary fixtureActualExpectedOutcome
explicit sequence 0[[0]][[0]]Passed
explicit sequence 1[[0], [1]][[0], [1]]Passed
explicit sequence 2[[0]][[0]]Passed
explicit sequence 3[[0, 1], [1]][[0, 1], [1]]Passed
explicit sequence 4[[0], [0, 1, 2, 3]][[0], []]Failed
explicit sequence 5[[0, 1, 2, 3]][[]]Failed
explicit sequence 6[[0, 1, 2, 3]][[]]Failed
explicit sequence 7[[2]][[2]]Passed
explicit sequence 8[[]][[]]Passed
explicit sequence 9[[0]][[0]]Passed
explicit sequence 10[[0, 1, 2, 3]][[]]Failed
explicit sequence 11[[0, 1, 2, 3]][[0, 1, 2, 3]]Passed

SHA-256 / 8fa4083ed641a5b8851ed701af9cd438de3b82d1eff465abb3361a27a1614a1f

3 / The verified repair

Exit 0
"""Failure Map reference implementation. Python standard library only."""
import json

N = 1
observations = []
def solve(commands, size):
    full=set(range(size))
    masks={}
    active=None
    out=[]
    for cmd in commands:
        op=cmd[0]
        if op=='define': masks[cmd[1]]=set(cmd[2]) & full
        elif op=='bind': active=cmd[1]
        elif op=='delete': masks.pop(cmd[1],None)
        elif op=='clone': masks[cmd[2]]=set(masks.get(cmd[1],set()))
        elif op=='subtract' and cmd[1] in masks: masks[cmd[1]]-=set(cmd[2])
        elif op=='rename' and cmd[1] in masks:
            masks[cmd[2]]=masks.pop(cmd[1])
            if active==cmd[1]: active=cmd[2]
        elif op=='reset': masks={}; active=None
        elif op=='draw': out.append(sorted(masks.get(active,set())))
    return out
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
if N == 1:
    check('explicit sequence 0', solve([['define', 'a', [0, 99, -1]], ['bind', 'a'], ['draw']], 4), [[0]])
    check('explicit sequence 1', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['draw'], ['bind', 'b'], ['draw']], 4), [[0], [1]])
    check('explicit sequence 2', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['delete', 'b'], ['draw']], 4), [[0]])
    check('explicit sequence 3', solve([['define', 'a', [0, 1]], ['clone', 'a', 'b'], ['subtract', 'a', [0]], ['bind', 'b'], ['draw'], ['bind', 'a'], ['draw']], 4), [[0, 1], [1]])
    check('explicit sequence 4', solve([['define', 'a', [0]], ['bind', 'a'], ['rename', 'a', 'b'], ['draw'], ['bind', 'a'], ['draw']], 4), [[0], []])
    check('explicit sequence 5', solve([['define', 'a', [0]], ['reset'], ['bind', 'a'], ['draw']], 4), [[]])
    check('explicit sequence 6', solve([['bind', 'missing'], ['draw']], 4), [[]])
    check('explicit sequence 7', solve([['define', 'a', [0]], ['define', 'a', [2]], ['bind', 'a'], ['draw']], 4), [[2]])
    check('explicit sequence 8', solve([['define', 'e', []], ['bind', 'e'], ['draw']], 4), [[]])
    check('explicit sequence 9', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['rename', 'b', 'c'], ['draw']], 4), [[0]])
    check('explicit sequence 10', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['reset'], ['bind', 'b'], ['draw']], 4), [[]])
    check('explicit sequence 11', solve([['define', 'a', [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]], ['bind', 'a'], ['draw']], 4), [[0, 1, 2, 3]])
if N == 2:
    check('explicit sequence 0', solve([['define', 'a', [0, 99, -1]], ['bind', 'a'], ['draw']], 5), [[0]])
    check('explicit sequence 1', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['draw'], ['bind', 'b'], ['draw']], 5), [[0], [1]])
    check('explicit sequence 2', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['delete', 'b'], ['draw']], 5), [[0]])
    check('explicit sequence 3', solve([['define', 'a', [0, 1]], ['clone', 'a', 'b'], ['subtract', 'a', [0]], ['bind', 'b'], ['draw'], ['bind', 'a'], ['draw']], 5), [[0, 1], [1]])
    check('explicit sequence 4', solve([['define', 'a', [0]], ['bind', 'a'], ['rename', 'a', 'b'], ['draw'], ['bind', 'a'], ['draw']], 5), [[0], []])
    check('explicit sequence 5', solve([['define', 'a', [0]], ['reset'], ['bind', 'a'], ['draw']], 5), [[]])
    check('explicit sequence 6', solve([['bind', 'missing'], ['draw']], 5), [[]])
    check('explicit sequence 7', solve([['define', 'a', [0]], ['define', 'a', [2]], ['bind', 'a'], ['draw']], 5), [[2]])
    check('explicit sequence 8', solve([['define', 'e', []], ['bind', 'e'], ['draw']], 5), [[]])
    check('explicit sequence 9', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['rename', 'b', 'c'], ['draw']], 5), [[0]])
    check('explicit sequence 10', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['reset'], ['bind', 'b'], ['draw']], 5), [[]])
    check('explicit sequence 11', solve([['define', 'a', [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]], ['bind', 'a'], ['draw']], 5), [[0, 1, 2, 3, 4]])
if N == 3:
    check('explicit sequence 0', solve([['define', 'a', [0, 99, -1]], ['bind', 'a'], ['draw']], 6), [[0]])
    check('explicit sequence 1', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['draw'], ['bind', 'b'], ['draw']], 6), [[0], [1]])
    check('explicit sequence 2', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['delete', 'b'], ['draw']], 6), [[0]])
    check('explicit sequence 3', solve([['define', 'a', [0, 1]], ['clone', 'a', 'b'], ['subtract', 'a', [0]], ['bind', 'b'], ['draw'], ['bind', 'a'], ['draw']], 6), [[0, 1], [1]])
    check('explicit sequence 4', solve([['define', 'a', [0]], ['bind', 'a'], ['rename', 'a', 'b'], ['draw'], ['bind', 'a'], ['draw']], 6), [[0], []])
    check('explicit sequence 5', solve([['define', 'a', [0]], ['reset'], ['bind', 'a'], ['draw']], 6), [[]])
    check('explicit sequence 6', solve([['bind', 'missing'], ['draw']], 6), [[]])
    check('explicit sequence 7', solve([['define', 'a', [0]], ['define', 'a', [2]], ['bind', 'a'], ['draw']], 6), [[2]])
    check('explicit sequence 8', solve([['define', 'e', []], ['bind', 'e'], ['draw']], 6), [[]])
    check('explicit sequence 9', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['rename', 'b', 'c'], ['draw']], 6), [[0]])
    check('explicit sequence 10', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['reset'], ['bind', 'b'], ['draw']], 6), [[]])
    check('explicit sequence 11', solve([['define', 'a', [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]], ['bind', 'a'], ['draw']], 6), [[0, 1, 2, 3, 4, 5]])
if N == 4:
    check('explicit sequence 0', solve([['define', 'a', [0, 99, -1]], ['bind', 'a'], ['draw']], 7), [[0]])
    check('explicit sequence 1', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['draw'], ['bind', 'b'], ['draw']], 7), [[0], [1]])
    check('explicit sequence 2', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['delete', 'b'], ['draw']], 7), [[0]])
    check('explicit sequence 3', solve([['define', 'a', [0, 1]], ['clone', 'a', 'b'], ['subtract', 'a', [0]], ['bind', 'b'], ['draw'], ['bind', 'a'], ['draw']], 7), [[0, 1], [1]])
    check('explicit sequence 4', solve([['define', 'a', [0]], ['bind', 'a'], ['rename', 'a', 'b'], ['draw'], ['bind', 'a'], ['draw']], 7), [[0], []])
    check('explicit sequence 5', solve([['define', 'a', [0]], ['reset'], ['bind', 'a'], ['draw']], 7), [[]])
    check('explicit sequence 6', solve([['bind', 'missing'], ['draw']], 7), [[]])
    check('explicit sequence 7', solve([['define', 'a', [0]], ['define', 'a', [2]], ['bind', 'a'], ['draw']], 7), [[2]])
    check('explicit sequence 8', solve([['define', 'e', []], ['bind', 'e'], ['draw']], 7), [[]])
    check('explicit sequence 9', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['rename', 'b', 'c'], ['draw']], 7), [[0]])
    check('explicit sequence 10', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['reset'], ['bind', 'b'], ['draw']], 7), [[]])
    check('explicit sequence 11', solve([['define', 'a', [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]], ['bind', 'a'], ['draw']], 7), [[0, 1, 2, 3, 4, 5, 6]])
if N == 5:
    check('explicit sequence 0', solve([['define', 'a', [0, 99, -1]], ['bind', 'a'], ['draw']], 8), [[0]])
    check('explicit sequence 1', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['draw'], ['bind', 'b'], ['draw']], 8), [[0], [1]])
    check('explicit sequence 2', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['delete', 'b'], ['draw']], 8), [[0]])
    check('explicit sequence 3', solve([['define', 'a', [0, 1]], ['clone', 'a', 'b'], ['subtract', 'a', [0]], ['bind', 'b'], ['draw'], ['bind', 'a'], ['draw']], 8), [[0, 1], [1]])
    check('explicit sequence 4', solve([['define', 'a', [0]], ['bind', 'a'], ['rename', 'a', 'b'], ['draw'], ['bind', 'a'], ['draw']], 8), [[0], []])
    check('explicit sequence 5', solve([['define', 'a', [0]], ['reset'], ['bind', 'a'], ['draw']], 8), [[]])
    check('explicit sequence 6', solve([['bind', 'missing'], ['draw']], 8), [[]])
    check('explicit sequence 7', solve([['define', 'a', [0]], ['define', 'a', [2]], ['bind', 'a'], ['draw']], 8), [[2]])
    check('explicit sequence 8', solve([['define', 'e', []], ['bind', 'e'], ['draw']], 8), [[]])
    check('explicit sequence 9', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['rename', 'b', 'c'], ['draw']], 8), [[0]])
    check('explicit sequence 10', solve([['define', 'a', [0]], ['define', 'b', [1]], ['bind', 'a'], ['reset'], ['bind', 'b'], ['draw']], 8), [[]])
    check('explicit sequence 11', solve([['define', 'a', [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]], ['bind', 'a'], ['draw']], 8), [[0, 1, 2, 3, 4, 5, 6, 7]])
print(json.dumps({"observations": observations, "passed": all(x["passed"] for x in observations)}, ensure_ascii=False))
raise SystemExit(0 if all(x["passed"] for x in observations) else 1)
Boundary fixtureActualExpectedOutcome
explicit sequence 0[[0]][[0]]Passed
explicit sequence 1[[0], [1]][[0], [1]]Passed
explicit sequence 2[[0]][[0]]Passed
explicit sequence 3[[0, 1], [1]][[0, 1], [1]]Passed
explicit sequence 4[[0], []][[0], []]Passed
explicit sequence 5[[]][[]]Passed
explicit sequence 6[[]][[]]Passed
explicit sequence 7[[2]][[2]]Passed
explicit sequence 8[[]][[]]Passed
explicit sequence 9[[0]][[0]]Passed
explicit sequence 10[[]][[]]Passed
explicit sequence 11[[0, 1, 2, 3]][[0, 1, 2, 3]]Passed

SHA-256 / 9b0336e6b8175ebd6cdd184386f0a8bf1ef983668a3150bb89fed084db31ab67

Verification & scope

Finite one-dimensional integer sample sets model coverage state only; no geometric intersection, memory layout, GPU or graphics-standard conformance is claimed. This reproducer isolates one failure mechanism. Results cover the supplied fixtures. Variants within a family share a test contract and should remain grouped when constructing evaluation splits. Related mechanisms with a shared evaluation_group must also remain together; these controlled models are not independent production incidents.

Observations recorded using Python 3.12.14 at 2026-09-29T14:45:09.488513+00:00.

Case digest / f14f7561cf323342e46e6d26991f084f9ecc4c327725b5413c49d19420d94284