FA-67756 / Elevator dispatch scheduling / Open access

Traffic pattern detection with hysteresis: percentage arithmetic · case 01

The up-peak share is always 0 or 100 percent, or rounds up across the threshold.

Verified by executionVariant 1 · 8 checks per implementationDownload source bundle ↓JSON ↗

ROOT CAUSE

Integer division happens before scaling to percent.

VERIFIED REPAIR

Scale to percent before the floor division.

Unsuccessful approach: Rounding to nearest turns 59.5 percent into 60.

Case contract

Per 5-minute window, total = lobby_up + other_up + down. up% = lobby_up*100//total and down% = to_lobby*100//total (0 if total is 0). An active peak ends when its percentage falls below 40 or total < 10. From interfloor (including just after a peak ended) a window with total >= 10 enters up-peak at up% >= 60, else down-peak at down% >= 60. Output the mode per window.

Why this case matters

Lift group controllers make these decisions many times per minute; a wrong answer strands passengers, wastes trips or overrides a safety rule.

1 / The failure

Exit 1

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

N = 1
observations = []
def solve(x):
    mode = 'interfloor'
    out = []
    for w in x['windows']:
        tot = w['lobby_up'] + w['other_up'] + w['down']
        up_pct = w['lobby_up'] // tot * 100 if tot else 0
        dn_pct = w['to_lobby'] * 100 // tot if tot else 0
        if mode == 'up-peak':
            if up_pct < 40 or tot < 10:
                mode = 'interfloor'
        elif mode == 'down-peak':
            if dn_pct < 40 or tot < 10:
                mode = 'interfloor'
        if mode == 'interfloor' and tot >= 10:
            if up_pct >= 60:
                mode = 'up-peak'
            elif dn_pct >= 60:
                mode = 'down-peak'
        out.append(mode)
    return out
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
fixtures = [[('regression: hysteresis keeps up-peak', {'windows': [{'lobby_up': 12, 'other_up': 2, 'down': 6, 'to_lobby': 0}, {'lobby_up': 9, 'other_up': 5, 'down': 6, 'to_lobby': 1}]}, ['up-peak', 'up-peak']), ('boundary: fraction just under sixty', {'windows': [{'lobby_up': 119, 'other_up': 41, 'down': 40, 'to_lobby': 0}]}, ['interfloor']), ('sampled regression 3', {'windows': [{'lobby_up': 15, 'other_up': 6, 'down': 15, 'to_lobby': 7}, {'lobby_up': 17, 'other_up': 1, 'down': 12, 'to_lobby': 11}, {'lobby_up': 9, 'other_up': 7, 'down': 10, 'to_lobby': 3}, {'lobby_up': 9, 'other_up': 2, 'down': 12, 'to_lobby': 5}, {'lobby_up': 17, 'other_up': 4, 'down': 10, 'to_lobby': 8}, {'lobby_up': 4, 'other_up': 4, 'down': 7, 'to_lobby': 7}, {'lobby_up': 6, 'other_up': 1, 'down': 19, 'to_lobby': 9}, {'lobby_up': 13, 'other_up': 1, 'down': 3, 'to_lobby': 3}]}, ['interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'up-peak']), ('regression: quiet window ends a peak', {'windows': [{'lobby_up': 12, 'other_up': 2, 'down': 6, 'to_lobby': 0}, {'lobby_up': 6, 'other_up': 0, 'down': 2, 'to_lobby': 0}]}, ['up-peak', 'interfloor']), ('boundary: quiet window cannot start a peak', {'windows': [{'lobby_up': 8, 'other_up': 0, 'down': 1, 'to_lobby': 0}]}, ['interfloor']), ('control 1', {'windows': [{'lobby_up': 0, 'other_up': 2, 'down': 3, 'to_lobby': 3}, {'lobby_up': 10, 'other_up': 4, 'down': 12, 'to_lobby': 11}, {'lobby_up': 0, 'other_up': 6, 'down': 8, 'to_lobby': 2}, {'lobby_up': 17, 'other_up': 3, 'down': 17, 'to_lobby': 15}]}, ['interfloor', 'interfloor', 'interfloor', 'interfloor']), ('sampled regression 4', {'windows': [{'lobby_up': 18, 'other_up': 3, 'down': 8, 'to_lobby': 4}, {'lobby_up': 2, 'other_up': 3, 'down': 15, 'to_lobby': 5}, {'lobby_up': 20, 'other_up': 6, 'down': 15, 'to_lobby': 15}, {'lobby_up': 16, 'other_up': 5, 'down': 19, 'to_lobby': 2}, {'lobby_up': 19, 'other_up': 6, 'down': 16, 'to_lobby': 6}, {'lobby_up': 1, 'other_up': 8, 'down': 0, 'to_lobby': 0}, {'lobby_up': 1, 'other_up': 2, 'down': 8, 'to_lobby': 8}, {'lobby_up': 6, 'other_up': 6, 'down': 0, 'to_lobby': 0}]}, ['up-peak', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'down-peak', 'interfloor']), ('sampled regression 7', {'windows': [{'lobby_up': 17, 'other_up': 7, 'down': 6, 'to_lobby': 6}, {'lobby_up': 7, 'other_up': 3, 'down': 4, 'to_lobby': 3}, {'lobby_up': 20, 'other_up': 8, 'down': 2, 'to_lobby': 1}, {'lobby_up': 17, 'other_up': 7, 'down': 7, 'to_lobby': 6}, {'lobby_up': 2, 'other_up': 3, 'down': 8, 'to_lobby': 3}, {'lobby_up': 15, 'other_up': 3, 'down': 16, 'to_lobby': 7}, {'lobby_up': 5, 'other_up': 5, 'down': 1, 'to_lobby': 0}]}, ['interfloor', 'interfloor', 'up-peak', 'up-peak', 'interfloor', 'interfloor', 'interfloor'])], [('regression: quiet window ends a peak', {'windows': [{'lobby_up': 12, 'other_up': 2, 'down': 6, 'to_lobby': 0}, {'lobby_up': 6, 'other_up': 0, 'down': 2, 'to_lobby': 0}]}, ['up-peak', 'interfloor']), ('boundary: fraction just under sixty', {'windows': [{'lobby_up': 119, 'other_up': 41, 'down': 40, 'to_lobby': 0}]}, ['interfloor']), ('sampled regression 12', {'windows': [{'lobby_up': 16, 'other_up': 6, 'down': 0, 'to_lobby': 0}, {'lobby_up': 9, 'other_up': 4, 'down': 13, 'to_lobby': 8}, {'lobby_up': 6, 'other_up': 1, 'down': 17, 'to_lobby': 7}, {'lobby_up': 20, 'other_up': 8, 'down': 13, 'to_lobby': 11}, {'lobby_up': 19, 'other_up': 5, 'down': 0, 'to_lobby': 0}, {'lobby_up': 2, 'other_up': 6, 'down': 20, 'to_lobby': 10}, {'lobby_up': 17, 'other_up': 1, 'down': 5, 'to_lobby': 4}]}, ['up-peak', 'interfloor', 'interfloor', 'interfloor', 'up-peak', 'interfloor', 'up-peak']), ('boundary: quiet window cannot start a peak', {'windows': [{'lobby_up': 8, 'other_up': 0, 'down': 1, 'to_lobby': 0}]}, ['interfloor']), ('regression: exactly sixty percent', {'windows': [{'lobby_up': 6, 'other_up': 2, 'down': 2, 'to_lobby': 0}]}, ['up-peak']), ('sampled regression 15', {'windows': [{'lobby_up': 8, 'other_up': 2, 'down': 2, 'to_lobby': 2}, {'lobby_up': 2, 'other_up': 0, 'down': 19, 'to_lobby': 13}, {'lobby_up': 11, 'other_up': 7, 'down': 20, 'to_lobby': 2}, {'lobby_up': 13, 'other_up': 7, 'down': 5, 'to_lobby': 5}, {'lobby_up': 1, 'other_up': 6, 'down': 7, 'to_lobby': 2}, {'lobby_up': 3, 'other_up': 1, 'down': 20, 'to_lobby': 20}]}, ['up-peak', 'down-peak', 'interfloor', 'interfloor', 'interfloor', 'down-peak']), ('control 18', {'windows': [{'lobby_up': 9, 'other_up': 7, 'down': 0, 'to_lobby': 0}, {'lobby_up': 18, 'other_up': 8, 'down': 11, 'to_lobby': 5}, {'lobby_up': 2, 'other_up': 6, 'down': 8, 'to_lobby': 3}, {'lobby_up': 10, 'other_up': 4, 'down': 20, 'to_lobby': 1}, {'lobby_up': 13, 'other_up': 5, 'down': 19, 'to_lobby': 12}, {'lobby_up': 1, 'other_up': 5, 'down': 16, 'to_lobby': 4}, {'lobby_up': 12, 'other_up': 6, 'down': 11, 'to_lobby': 2}]}, ['interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor']), ('control 21', {'windows': [{'lobby_up': 8, 'other_up': 5, 'down': 6, 'to_lobby': 1}, {'lobby_up': 20, 'other_up': 1, 'down': 15, 'to_lobby': 8}, {'lobby_up': 10, 'other_up': 0, 'down': 0, 'to_lobby': 0}]}, ['interfloor', 'interfloor', 'up-peak'])], [('regression: exactly sixty percent', {'windows': [{'lobby_up': 6, 'other_up': 2, 'down': 2, 'to_lobby': 0}]}, ['up-peak']), ('boundary: fraction just under sixty', {'windows': [{'lobby_up': 119, 'other_up': 41, 'down': 40, 'to_lobby': 0}]}, ['interfloor']), ('sampled regression 20', {'windows': [{'lobby_up': 17, 'other_up': 3, 'down': 20, 'to_lobby': 3}, {'lobby_up': 13, 'other_up': 1, 'down': 12, 'to_lobby': 11}, {'lobby_up': 12, 'other_up': 4, 'down': 10, 'to_lobby': 7}, {'lobby_up': 14, 'other_up': 3, 'down': 2, 'to_lobby': 0}, {'lobby_up': 12, 'other_up': 4, 'down': 2, 'to_lobby': 0}, {'lobby_up': 17, 'other_up': 2, 'down': 9, 'to_lobby': 3}, {'lobby_up': 19, 'other_up': 0, 'down': 11, 'to_lobby': 1}]}, ['interfloor', 'interfloor', 'interfloor', 'up-peak', 'up-peak', 'up-peak', 'up-peak']), ('boundary: down peak', {'windows': [{'lobby_up': 1, 'other_up': 1, 'down': 18, 'to_lobby': 15}, {'lobby_up': 2, 'other_up': 2, 'down': 16, 'to_lobby': 7}]}, ['down-peak', 'interfloor']), ('regression: hysteresis keeps up-peak', {'windows': [{'lobby_up': 12, 'other_up': 2, 'down': 6, 'to_lobby': 0}, {'lobby_up': 9, 'other_up': 5, 'down': 6, 'to_lobby': 1}]}, ['up-peak', 'up-peak']), ('control 23', {'windows': [{'lobby_up': 6, 'other_up': 6, 'down': 20, 'to_lobby': 19}, {'lobby_up': 4, 'other_up': 7, 'down': 17, 'to_lobby': 9}, {'lobby_up': 3, 'other_up': 8, 'down': 7, 'to_lobby': 3}, {'lobby_up': 15, 'other_up': 8, 'down': 3, 'to_lobby': 2}]}, ['interfloor', 'interfloor', 'interfloor', 'interfloor']), ('sampled regression 26', {'windows': [{'lobby_up': 6, 'other_up': 0, 'down': 20, 'to_lobby': 17}, {'lobby_up': 17, 'other_up': 3, 'down': 18, 'to_lobby': 1}, {'lobby_up': 6, 'other_up': 5, 'down': 7, 'to_lobby': 0}, {'lobby_up': 17, 'other_up': 8, 'down': 20, 'to_lobby': 8}, {'lobby_up': 3, 'other_up': 5, 'down': 5, 'to_lobby': 0}, {'lobby_up': 12, 'other_up': 3, 'down': 20, 'to_lobby': 19}, {'lobby_up': 17, 'other_up': 2, 'down': 1, 'to_lobby': 1}, {'lobby_up': 7, 'other_up': 5, 'down': 9, 'to_lobby': 6}]}, ['down-peak', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'up-peak', 'interfloor']), ('sampled regression 29', {'windows': [{'lobby_up': 19, 'other_up': 4, 'down': 20, 'to_lobby': 10}, {'lobby_up': 6, 'other_up': 5, 'down': 9, 'to_lobby': 1}, {'lobby_up': 12, 'other_up': 0, 'down': 17, 'to_lobby': 0}, {'lobby_up': 19, 'other_up': 4, 'down': 8, 'to_lobby': 1}]}, ['interfloor', 'interfloor', 'interfloor', 'up-peak'])], [('regression: hysteresis keeps up-peak', {'windows': [{'lobby_up': 12, 'other_up': 2, 'down': 6, 'to_lobby': 0}, {'lobby_up': 9, 'other_up': 5, 'down': 6, 'to_lobby': 1}]}, ['up-peak', 'up-peak']), ('boundary: fraction just under sixty', {'windows': [{'lobby_up': 119, 'other_up': 41, 'down': 40, 'to_lobby': 0}]}, ['interfloor']), ('sampled regression 32', {'windows': [{'lobby_up': 6, 'other_up': 6, 'down': 1, 'to_lobby': 0}, {'lobby_up': 10, 'other_up': 0, 'down': 19, 'to_lobby': 12}, {'lobby_up': 17, 'other_up': 4, 'down': 2, 'to_lobby': 1}]}, ['interfloor', 'interfloor', 'up-peak']), ('regression: quiet window ends a peak', {'windows': [{'lobby_up': 12, 'other_up': 2, 'down': 6, 'to_lobby': 0}, {'lobby_up': 6, 'other_up': 0, 'down': 2, 'to_lobby': 0}]}, ['up-peak', 'interfloor']), ('boundary: quiet window cannot start a peak', {'windows': [{'lobby_up': 8, 'other_up': 0, 'down': 1, 'to_lobby': 0}]}, ['interfloor']), ('sampled regression 34', {'windows': [{'lobby_up': 14, 'other_up': 3, 'down': 13, 'to_lobby': 8}, {'lobby_up': 8, 'other_up': 4, 'down': 1, 'to_lobby': 1}, {'lobby_up': 20, 'other_up': 0, 'down': 3, 'to_lobby': 3}, {'lobby_up': 4, 'other_up': 5, 'down': 8, 'to_lobby': 7}, {'lobby_up': 6, 'other_up': 6, 'down': 19, 'to_lobby': 5}, {'lobby_up': 6, 'other_up': 5, 'down': 7, 'to_lobby': 5}]}, ['interfloor', 'up-peak', 'up-peak', 'interfloor', 'interfloor', 'interfloor']), ('control 37', {'windows': [{'lobby_up': 16, 'other_up': 8, 'down': 17, 'to_lobby': 12}, {'lobby_up': 16, 'other_up': 3, 'down': 11, 'to_lobby': 0}, {'lobby_up': 4, 'other_up': 8, 'down': 1, 'to_lobby': 0}, {'lobby_up': 10, 'other_up': 5, 'down': 8, 'to_lobby': 5}]}, ['interfloor', 'interfloor', 'interfloor', 'interfloor']), ('sampled regression 40', {'windows': [{'lobby_up': 7, 'other_up': 6, 'down': 2, 'to_lobby': 1}, {'lobby_up': 11, 'other_up': 2, 'down': 1, 'to_lobby': 0}, {'lobby_up': 18, 'other_up': 7, 'down': 16, 'to_lobby': 4}, {'lobby_up': 0, 'other_up': 8, 'down': 18, 'to_lobby': 1}, {'lobby_up': 1, 'other_up': 2, 'down': 12, 'to_lobby': 9}, {'lobby_up': 7, 'other_up': 3, 'down': 0, 'to_lobby': 0}]}, ['interfloor', 'up-peak', 'up-peak', 'interfloor', 'down-peak', 'up-peak'])], [('regression: quiet window ends a peak', {'windows': [{'lobby_up': 12, 'other_up': 2, 'down': 6, 'to_lobby': 0}, {'lobby_up': 6, 'other_up': 0, 'down': 2, 'to_lobby': 0}]}, ['up-peak', 'interfloor']), ('boundary: fraction just under sixty', {'windows': [{'lobby_up': 119, 'other_up': 41, 'down': 40, 'to_lobby': 0}]}, ['interfloor']), ('sampled regression 47', {'windows': [{'lobby_up': 2, 'other_up': 7, 'down': 18, 'to_lobby': 2}, {'lobby_up': 19, 'other_up': 5, 'down': 2, 'to_lobby': 2}, {'lobby_up': 0, 'other_up': 1, 'down': 6, 'to_lobby': 6}, {'lobby_up': 15, 'other_up': 6, 'down': 3, 'to_lobby': 3}, {'lobby_up': 15, 'other_up': 0, 'down': 16, 'to_lobby': 6}, {'lobby_up': 2, 'other_up': 1, 'down': 5, 'to_lobby': 3}, {'lobby_up': 12, 'other_up': 4, 'down': 8, 'to_lobby': 8}]}, ['interfloor', 'up-peak', 'interfloor', 'up-peak', 'up-peak', 'interfloor', 'interfloor']), ('boundary: quiet window cannot start a peak', {'windows': [{'lobby_up': 8, 'other_up': 0, 'down': 1, 'to_lobby': 0}]}, ['interfloor']), ('regression: exactly sixty percent', {'windows': [{'lobby_up': 6, 'other_up': 2, 'down': 2, 'to_lobby': 0}]}, ['up-peak']), ('control 45', {'windows': [{'lobby_up': 15, 'other_up': 5, 'down': 7, 'to_lobby': 2}, {'lobby_up': 5, 'other_up': 7, 'down': 14, 'to_lobby': 0}, {'lobby_up': 17, 'other_up': 2, 'down': 13, 'to_lobby': 4}, {'lobby_up': 3, 'other_up': 3, 'down': 10, 'to_lobby': 7}]}, ['interfloor', 'interfloor', 'interfloor', 'interfloor']), ('sampled regression 48', {'windows': [{'lobby_up': 0, 'other_up': 3, 'down': 12, 'to_lobby': 1}, {'lobby_up': 19, 'other_up': 1, 'down': 12, 'to_lobby': 11}, {'lobby_up': 8, 'other_up': 2, 'down': 4, 'to_lobby': 3}, {'lobby_up': 18, 'other_up': 8, 'down': 1, 'to_lobby': 0}, {'lobby_up': 9, 'other_up': 7, 'down': 18, 'to_lobby': 17}, {'lobby_up': 11, 'other_up': 1, 'down': 18, 'to_lobby': 7}, {'lobby_up': 10, 'other_up': 2, 'down': 15, 'to_lobby': 2}]}, ['interfloor', 'interfloor', 'interfloor', 'up-peak', 'interfloor', 'interfloor', 'interfloor']), ('sampled regression 51', {'windows': [{'lobby_up': 4, 'other_up': 0, 'down': 1, 'to_lobby': 0}, {'lobby_up': 16, 'other_up': 6, 'down': 19, 'to_lobby': 15}, {'lobby_up': 13, 'other_up': 6, 'down': 3, 'to_lobby': 3}, {'lobby_up': 15, 'other_up': 0, 'down': 16, 'to_lobby': 2}, {'lobby_up': 20, 'other_up': 8, 'down': 11, 'to_lobby': 7}, {'lobby_up': 10, 'other_up': 5, 'down': 6, 'to_lobby': 1}, {'lobby_up': 12, 'other_up': 6, 'down': 19, 'to_lobby': 0}, {'lobby_up': 20, 'other_up': 2, 'down': 1, 'to_lobby': 1}]}, ['interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'up-peak'])]]
for label, args, expected in fixtures[N-1]:
    check(label, solve(args), expected)
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 fixture	Actual	Expected	Outcome
regression: hysteresis keeps up-peak	`['interfloor', 'interfloor']`	`['up-peak', 'up-peak']`	Failed
boundary: fraction just under sixty	`['interfloor']`	`['interfloor']`	Passed
sampled regression 3	`['interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor']`	`['interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'up-peak']`	Failed
regression: quiet window ends a peak	`['interfloor', 'interfloor']`	`['up-peak', 'interfloor']`	Failed
boundary: quiet window cannot start a peak	`['interfloor']`	`['interfloor']`	Passed
control 1	`['interfloor', 'interfloor', 'interfloor', 'interfloor']`	`['interfloor', 'interfloor', 'interfloor', 'interfloor']`	Passed
sampled regression 4	`['interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'down-peak', 'interfloor']`	`['up-peak', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'down-peak', 'interfloor']`	Failed
sampled regression 7	`['interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor']`	`['interfloor', 'interfloor', 'up-peak', 'up-peak', 'interfloor', 'interfloor', 'interfloor']`	Failed

SHA-256 / 12966ba012b7fd993d50ea09f82630b9d3359fe4d35925e8f8716df63d560d83

2 / The unsuccessful fix

Exit 1

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

N = 1
observations = []
def solve(x):
    mode = 'interfloor'
    out = []
    for w in x['windows']:
        tot = w['lobby_up'] + w['other_up'] + w['down']
        up_pct = round(w['lobby_up'] * 100 / tot) if tot else 0
        dn_pct = w['to_lobby'] * 100 // tot if tot else 0
        if mode == 'up-peak':
            if up_pct < 40 or tot < 10:
                mode = 'interfloor'
        elif mode == 'down-peak':
            if dn_pct < 40 or tot < 10:
                mode = 'interfloor'
        if mode == 'interfloor' and tot >= 10:
            if up_pct >= 60:
                mode = 'up-peak'
            elif dn_pct >= 60:
                mode = 'down-peak'
        out.append(mode)
    return out
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
fixtures = [[('regression: hysteresis keeps up-peak', {'windows': [{'lobby_up': 12, 'other_up': 2, 'down': 6, 'to_lobby': 0}, {'lobby_up': 9, 'other_up': 5, 'down': 6, 'to_lobby': 1}]}, ['up-peak', 'up-peak']), ('boundary: fraction just under sixty', {'windows': [{'lobby_up': 119, 'other_up': 41, 'down': 40, 'to_lobby': 0}]}, ['interfloor']), ('sampled regression 3', {'windows': [{'lobby_up': 15, 'other_up': 6, 'down': 15, 'to_lobby': 7}, {'lobby_up': 17, 'other_up': 1, 'down': 12, 'to_lobby': 11}, {'lobby_up': 9, 'other_up': 7, 'down': 10, 'to_lobby': 3}, {'lobby_up': 9, 'other_up': 2, 'down': 12, 'to_lobby': 5}, {'lobby_up': 17, 'other_up': 4, 'down': 10, 'to_lobby': 8}, {'lobby_up': 4, 'other_up': 4, 'down': 7, 'to_lobby': 7}, {'lobby_up': 6, 'other_up': 1, 'down': 19, 'to_lobby': 9}, {'lobby_up': 13, 'other_up': 1, 'down': 3, 'to_lobby': 3}]}, ['interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'up-peak']), ('regression: quiet window ends a peak', {'windows': [{'lobby_up': 12, 'other_up': 2, 'down': 6, 'to_lobby': 0}, {'lobby_up': 6, 'other_up': 0, 'down': 2, 'to_lobby': 0}]}, ['up-peak', 'interfloor']), ('boundary: quiet window cannot start a peak', {'windows': [{'lobby_up': 8, 'other_up': 0, 'down': 1, 'to_lobby': 0}]}, ['interfloor']), ('control 1', {'windows': [{'lobby_up': 0, 'other_up': 2, 'down': 3, 'to_lobby': 3}, {'lobby_up': 10, 'other_up': 4, 'down': 12, 'to_lobby': 11}, {'lobby_up': 0, 'other_up': 6, 'down': 8, 'to_lobby': 2}, {'lobby_up': 17, 'other_up': 3, 'down': 17, 'to_lobby': 15}]}, ['interfloor', 'interfloor', 'interfloor', 'interfloor']), ('sampled regression 4', {'windows': [{'lobby_up': 18, 'other_up': 3, 'down': 8, 'to_lobby': 4}, {'lobby_up': 2, 'other_up': 3, 'down': 15, 'to_lobby': 5}, {'lobby_up': 20, 'other_up': 6, 'down': 15, 'to_lobby': 15}, {'lobby_up': 16, 'other_up': 5, 'down': 19, 'to_lobby': 2}, {'lobby_up': 19, 'other_up': 6, 'down': 16, 'to_lobby': 6}, {'lobby_up': 1, 'other_up': 8, 'down': 0, 'to_lobby': 0}, {'lobby_up': 1, 'other_up': 2, 'down': 8, 'to_lobby': 8}, {'lobby_up': 6, 'other_up': 6, 'down': 0, 'to_lobby': 0}]}, ['up-peak', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'down-peak', 'interfloor']), ('sampled regression 7', {'windows': [{'lobby_up': 17, 'other_up': 7, 'down': 6, 'to_lobby': 6}, {'lobby_up': 7, 'other_up': 3, 'down': 4, 'to_lobby': 3}, {'lobby_up': 20, 'other_up': 8, 'down': 2, 'to_lobby': 1}, {'lobby_up': 17, 'other_up': 7, 'down': 7, 'to_lobby': 6}, {'lobby_up': 2, 'other_up': 3, 'down': 8, 'to_lobby': 3}, {'lobby_up': 15, 'other_up': 3, 'down': 16, 'to_lobby': 7}, {'lobby_up': 5, 'other_up': 5, 'down': 1, 'to_lobby': 0}]}, ['interfloor', 'interfloor', 'up-peak', 'up-peak', 'interfloor', 'interfloor', 'interfloor'])], [('regression: quiet window ends a peak', {'windows': [{'lobby_up': 12, 'other_up': 2, 'down': 6, 'to_lobby': 0}, {'lobby_up': 6, 'other_up': 0, 'down': 2, 'to_lobby': 0}]}, ['up-peak', 'interfloor']), ('boundary: fraction just under sixty', {'windows': [{'lobby_up': 119, 'other_up': 41, 'down': 40, 'to_lobby': 0}]}, ['interfloor']), ('sampled regression 12', {'windows': [{'lobby_up': 16, 'other_up': 6, 'down': 0, 'to_lobby': 0}, {'lobby_up': 9, 'other_up': 4, 'down': 13, 'to_lobby': 8}, {'lobby_up': 6, 'other_up': 1, 'down': 17, 'to_lobby': 7}, {'lobby_up': 20, 'other_up': 8, 'down': 13, 'to_lobby': 11}, {'lobby_up': 19, 'other_up': 5, 'down': 0, 'to_lobby': 0}, {'lobby_up': 2, 'other_up': 6, 'down': 20, 'to_lobby': 10}, {'lobby_up': 17, 'other_up': 1, 'down': 5, 'to_lobby': 4}]}, ['up-peak', 'interfloor', 'interfloor', 'interfloor', 'up-peak', 'interfloor', 'up-peak']), ('boundary: quiet window cannot start a peak', {'windows': [{'lobby_up': 8, 'other_up': 0, 'down': 1, 'to_lobby': 0}]}, ['interfloor']), ('regression: exactly sixty percent', {'windows': [{'lobby_up': 6, 'other_up': 2, 'down': 2, 'to_lobby': 0}]}, ['up-peak']), ('sampled regression 15', {'windows': [{'lobby_up': 8, 'other_up': 2, 'down': 2, 'to_lobby': 2}, {'lobby_up': 2, 'other_up': 0, 'down': 19, 'to_lobby': 13}, {'lobby_up': 11, 'other_up': 7, 'down': 20, 'to_lobby': 2}, {'lobby_up': 13, 'other_up': 7, 'down': 5, 'to_lobby': 5}, {'lobby_up': 1, 'other_up': 6, 'down': 7, 'to_lobby': 2}, {'lobby_up': 3, 'other_up': 1, 'down': 20, 'to_lobby': 20}]}, ['up-peak', 'down-peak', 'interfloor', 'interfloor', 'interfloor', 'down-peak']), ('control 18', {'windows': [{'lobby_up': 9, 'other_up': 7, 'down': 0, 'to_lobby': 0}, {'lobby_up': 18, 'other_up': 8, 'down': 11, 'to_lobby': 5}, {'lobby_up': 2, 'other_up': 6, 'down': 8, 'to_lobby': 3}, {'lobby_up': 10, 'other_up': 4, 'down': 20, 'to_lobby': 1}, {'lobby_up': 13, 'other_up': 5, 'down': 19, 'to_lobby': 12}, {'lobby_up': 1, 'other_up': 5, 'down': 16, 'to_lobby': 4}, {'lobby_up': 12, 'other_up': 6, 'down': 11, 'to_lobby': 2}]}, ['interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor']), ('control 21', {'windows': [{'lobby_up': 8, 'other_up': 5, 'down': 6, 'to_lobby': 1}, {'lobby_up': 20, 'other_up': 1, 'down': 15, 'to_lobby': 8}, {'lobby_up': 10, 'other_up': 0, 'down': 0, 'to_lobby': 0}]}, ['interfloor', 'interfloor', 'up-peak'])], [('regression: exactly sixty percent', {'windows': [{'lobby_up': 6, 'other_up': 2, 'down': 2, 'to_lobby': 0}]}, ['up-peak']), ('boundary: fraction just under sixty', {'windows': [{'lobby_up': 119, 'other_up': 41, 'down': 40, 'to_lobby': 0}]}, ['interfloor']), ('sampled regression 20', {'windows': [{'lobby_up': 17, 'other_up': 3, 'down': 20, 'to_lobby': 3}, {'lobby_up': 13, 'other_up': 1, 'down': 12, 'to_lobby': 11}, {'lobby_up': 12, 'other_up': 4, 'down': 10, 'to_lobby': 7}, {'lobby_up': 14, 'other_up': 3, 'down': 2, 'to_lobby': 0}, {'lobby_up': 12, 'other_up': 4, 'down': 2, 'to_lobby': 0}, {'lobby_up': 17, 'other_up': 2, 'down': 9, 'to_lobby': 3}, {'lobby_up': 19, 'other_up': 0, 'down': 11, 'to_lobby': 1}]}, ['interfloor', 'interfloor', 'interfloor', 'up-peak', 'up-peak', 'up-peak', 'up-peak']), ('boundary: down peak', {'windows': [{'lobby_up': 1, 'other_up': 1, 'down': 18, 'to_lobby': 15}, {'lobby_up': 2, 'other_up': 2, 'down': 16, 'to_lobby': 7}]}, ['down-peak', 'interfloor']), ('regression: hysteresis keeps up-peak', {'windows': [{'lobby_up': 12, 'other_up': 2, 'down': 6, 'to_lobby': 0}, {'lobby_up': 9, 'other_up': 5, 'down': 6, 'to_lobby': 1}]}, ['up-peak', 'up-peak']), ('control 23', {'windows': [{'lobby_up': 6, 'other_up': 6, 'down': 20, 'to_lobby': 19}, {'lobby_up': 4, 'other_up': 7, 'down': 17, 'to_lobby': 9}, {'lobby_up': 3, 'other_up': 8, 'down': 7, 'to_lobby': 3}, {'lobby_up': 15, 'other_up': 8, 'down': 3, 'to_lobby': 2}]}, ['interfloor', 'interfloor', 'interfloor', 'interfloor']), ('sampled regression 26', {'windows': [{'lobby_up': 6, 'other_up': 0, 'down': 20, 'to_lobby': 17}, {'lobby_up': 17, 'other_up': 3, 'down': 18, 'to_lobby': 1}, {'lobby_up': 6, 'other_up': 5, 'down': 7, 'to_lobby': 0}, {'lobby_up': 17, 'other_up': 8, 'down': 20, 'to_lobby': 8}, {'lobby_up': 3, 'other_up': 5, 'down': 5, 'to_lobby': 0}, {'lobby_up': 12, 'other_up': 3, 'down': 20, 'to_lobby': 19}, {'lobby_up': 17, 'other_up': 2, 'down': 1, 'to_lobby': 1}, {'lobby_up': 7, 'other_up': 5, 'down': 9, 'to_lobby': 6}]}, ['down-peak', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'up-peak', 'interfloor']), ('sampled regression 29', {'windows': [{'lobby_up': 19, 'other_up': 4, 'down': 20, 'to_lobby': 10}, {'lobby_up': 6, 'other_up': 5, 'down': 9, 'to_lobby': 1}, {'lobby_up': 12, 'other_up': 0, 'down': 17, 'to_lobby': 0}, {'lobby_up': 19, 'other_up': 4, 'down': 8, 'to_lobby': 1}]}, ['interfloor', 'interfloor', 'interfloor', 'up-peak'])], [('regression: hysteresis keeps up-peak', {'windows': [{'lobby_up': 12, 'other_up': 2, 'down': 6, 'to_lobby': 0}, {'lobby_up': 9, 'other_up': 5, 'down': 6, 'to_lobby': 1}]}, ['up-peak', 'up-peak']), ('boundary: fraction just under sixty', {'windows': [{'lobby_up': 119, 'other_up': 41, 'down': 40, 'to_lobby': 0}]}, ['interfloor']), ('sampled regression 32', {'windows': [{'lobby_up': 6, 'other_up': 6, 'down': 1, 'to_lobby': 0}, {'lobby_up': 10, 'other_up': 0, 'down': 19, 'to_lobby': 12}, {'lobby_up': 17, 'other_up': 4, 'down': 2, 'to_lobby': 1}]}, ['interfloor', 'interfloor', 'up-peak']), ('regression: quiet window ends a peak', {'windows': [{'lobby_up': 12, 'other_up': 2, 'down': 6, 'to_lobby': 0}, {'lobby_up': 6, 'other_up': 0, 'down': 2, 'to_lobby': 0}]}, ['up-peak', 'interfloor']), ('boundary: quiet window cannot start a peak', {'windows': [{'lobby_up': 8, 'other_up': 0, 'down': 1, 'to_lobby': 0}]}, ['interfloor']), ('sampled regression 34', {'windows': [{'lobby_up': 14, 'other_up': 3, 'down': 13, 'to_lobby': 8}, {'lobby_up': 8, 'other_up': 4, 'down': 1, 'to_lobby': 1}, {'lobby_up': 20, 'other_up': 0, 'down': 3, 'to_lobby': 3}, {'lobby_up': 4, 'other_up': 5, 'down': 8, 'to_lobby': 7}, {'lobby_up': 6, 'other_up': 6, 'down': 19, 'to_lobby': 5}, {'lobby_up': 6, 'other_up': 5, 'down': 7, 'to_lobby': 5}]}, ['interfloor', 'up-peak', 'up-peak', 'interfloor', 'interfloor', 'interfloor']), ('control 37', {'windows': [{'lobby_up': 16, 'other_up': 8, 'down': 17, 'to_lobby': 12}, {'lobby_up': 16, 'other_up': 3, 'down': 11, 'to_lobby': 0}, {'lobby_up': 4, 'other_up': 8, 'down': 1, 'to_lobby': 0}, {'lobby_up': 10, 'other_up': 5, 'down': 8, 'to_lobby': 5}]}, ['interfloor', 'interfloor', 'interfloor', 'interfloor']), ('sampled regression 40', {'windows': [{'lobby_up': 7, 'other_up': 6, 'down': 2, 'to_lobby': 1}, {'lobby_up': 11, 'other_up': 2, 'down': 1, 'to_lobby': 0}, {'lobby_up': 18, 'other_up': 7, 'down': 16, 'to_lobby': 4}, {'lobby_up': 0, 'other_up': 8, 'down': 18, 'to_lobby': 1}, {'lobby_up': 1, 'other_up': 2, 'down': 12, 'to_lobby': 9}, {'lobby_up': 7, 'other_up': 3, 'down': 0, 'to_lobby': 0}]}, ['interfloor', 'up-peak', 'up-peak', 'interfloor', 'down-peak', 'up-peak'])], [('regression: quiet window ends a peak', {'windows': [{'lobby_up': 12, 'other_up': 2, 'down': 6, 'to_lobby': 0}, {'lobby_up': 6, 'other_up': 0, 'down': 2, 'to_lobby': 0}]}, ['up-peak', 'interfloor']), ('boundary: fraction just under sixty', {'windows': [{'lobby_up': 119, 'other_up': 41, 'down': 40, 'to_lobby': 0}]}, ['interfloor']), ('sampled regression 47', {'windows': [{'lobby_up': 2, 'other_up': 7, 'down': 18, 'to_lobby': 2}, {'lobby_up': 19, 'other_up': 5, 'down': 2, 'to_lobby': 2}, {'lobby_up': 0, 'other_up': 1, 'down': 6, 'to_lobby': 6}, {'lobby_up': 15, 'other_up': 6, 'down': 3, 'to_lobby': 3}, {'lobby_up': 15, 'other_up': 0, 'down': 16, 'to_lobby': 6}, {'lobby_up': 2, 'other_up': 1, 'down': 5, 'to_lobby': 3}, {'lobby_up': 12, 'other_up': 4, 'down': 8, 'to_lobby': 8}]}, ['interfloor', 'up-peak', 'interfloor', 'up-peak', 'up-peak', 'interfloor', 'interfloor']), ('boundary: quiet window cannot start a peak', {'windows': [{'lobby_up': 8, 'other_up': 0, 'down': 1, 'to_lobby': 0}]}, ['interfloor']), ('regression: exactly sixty percent', {'windows': [{'lobby_up': 6, 'other_up': 2, 'down': 2, 'to_lobby': 0}]}, ['up-peak']), ('control 45', {'windows': [{'lobby_up': 15, 'other_up': 5, 'down': 7, 'to_lobby': 2}, {'lobby_up': 5, 'other_up': 7, 'down': 14, 'to_lobby': 0}, {'lobby_up': 17, 'other_up': 2, 'down': 13, 'to_lobby': 4}, {'lobby_up': 3, 'other_up': 3, 'down': 10, 'to_lobby': 7}]}, ['interfloor', 'interfloor', 'interfloor', 'interfloor']), ('sampled regression 48', {'windows': [{'lobby_up': 0, 'other_up': 3, 'down': 12, 'to_lobby': 1}, {'lobby_up': 19, 'other_up': 1, 'down': 12, 'to_lobby': 11}, {'lobby_up': 8, 'other_up': 2, 'down': 4, 'to_lobby': 3}, {'lobby_up': 18, 'other_up': 8, 'down': 1, 'to_lobby': 0}, {'lobby_up': 9, 'other_up': 7, 'down': 18, 'to_lobby': 17}, {'lobby_up': 11, 'other_up': 1, 'down': 18, 'to_lobby': 7}, {'lobby_up': 10, 'other_up': 2, 'down': 15, 'to_lobby': 2}]}, ['interfloor', 'interfloor', 'interfloor', 'up-peak', 'interfloor', 'interfloor', 'interfloor']), ('sampled regression 51', {'windows': [{'lobby_up': 4, 'other_up': 0, 'down': 1, 'to_lobby': 0}, {'lobby_up': 16, 'other_up': 6, 'down': 19, 'to_lobby': 15}, {'lobby_up': 13, 'other_up': 6, 'down': 3, 'to_lobby': 3}, {'lobby_up': 15, 'other_up': 0, 'down': 16, 'to_lobby': 2}, {'lobby_up': 20, 'other_up': 8, 'down': 11, 'to_lobby': 7}, {'lobby_up': 10, 'other_up': 5, 'down': 6, 'to_lobby': 1}, {'lobby_up': 12, 'other_up': 6, 'down': 19, 'to_lobby': 0}, {'lobby_up': 20, 'other_up': 2, 'down': 1, 'to_lobby': 1}]}, ['interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'up-peak'])]]
for label, args, expected in fixtures[N-1]:
    check(label, solve(args), expected)
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 fixture	Actual	Expected	Outcome
regression: hysteresis keeps up-peak	`['up-peak', 'up-peak']`	`['up-peak', 'up-peak']`	Passed
boundary: fraction just under sixty	`['up-peak']`	`['interfloor']`	Failed
sampled regression 3	`['interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'up-peak']`	`['interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'up-peak']`	Passed
regression: quiet window ends a peak	`['up-peak', 'interfloor']`	`['up-peak', 'interfloor']`	Passed
boundary: quiet window cannot start a peak	`['interfloor']`	`['interfloor']`	Passed
control 1	`['interfloor', 'interfloor', 'interfloor', 'interfloor']`	`['interfloor', 'interfloor', 'interfloor', 'interfloor']`	Passed
sampled regression 4	`['up-peak', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'down-peak', 'interfloor']`	`['up-peak', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'down-peak', 'interfloor']`	Passed
sampled regression 7	`['interfloor', 'interfloor', 'up-peak', 'up-peak', 'interfloor', 'interfloor', 'interfloor']`	`['interfloor', 'interfloor', 'up-peak', 'up-peak', 'interfloor', 'interfloor', 'interfloor']`	Passed

SHA-256 / 8597714cae75a7061fad4287724671eff057b104d884d18cd9c2be1cf0fc9ce0

3 / The verified repair

Exit 0

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

N = 1
observations = []
def solve(x):
    mode = 'interfloor'
    out = []
    for w in x['windows']:
        tot = w['lobby_up'] + w['other_up'] + w['down']
        up_pct = w['lobby_up'] * 100 // tot if tot else 0
        dn_pct = w['to_lobby'] * 100 // tot if tot else 0
        if mode == 'up-peak':
            if up_pct < 40 or tot < 10:
                mode = 'interfloor'
        elif mode == 'down-peak':
            if dn_pct < 40 or tot < 10:
                mode = 'interfloor'
        if mode == 'interfloor' and tot >= 10:
            if up_pct >= 60:
                mode = 'up-peak'
            elif dn_pct >= 60:
                mode = 'down-peak'
        out.append(mode)
    return out
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
fixtures = [[('regression: hysteresis keeps up-peak', {'windows': [{'lobby_up': 12, 'other_up': 2, 'down': 6, 'to_lobby': 0}, {'lobby_up': 9, 'other_up': 5, 'down': 6, 'to_lobby': 1}]}, ['up-peak', 'up-peak']), ('boundary: fraction just under sixty', {'windows': [{'lobby_up': 119, 'other_up': 41, 'down': 40, 'to_lobby': 0}]}, ['interfloor']), ('sampled regression 3', {'windows': [{'lobby_up': 15, 'other_up': 6, 'down': 15, 'to_lobby': 7}, {'lobby_up': 17, 'other_up': 1, 'down': 12, 'to_lobby': 11}, {'lobby_up': 9, 'other_up': 7, 'down': 10, 'to_lobby': 3}, {'lobby_up': 9, 'other_up': 2, 'down': 12, 'to_lobby': 5}, {'lobby_up': 17, 'other_up': 4, 'down': 10, 'to_lobby': 8}, {'lobby_up': 4, 'other_up': 4, 'down': 7, 'to_lobby': 7}, {'lobby_up': 6, 'other_up': 1, 'down': 19, 'to_lobby': 9}, {'lobby_up': 13, 'other_up': 1, 'down': 3, 'to_lobby': 3}]}, ['interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'up-peak']), ('regression: quiet window ends a peak', {'windows': [{'lobby_up': 12, 'other_up': 2, 'down': 6, 'to_lobby': 0}, {'lobby_up': 6, 'other_up': 0, 'down': 2, 'to_lobby': 0}]}, ['up-peak', 'interfloor']), ('boundary: quiet window cannot start a peak', {'windows': [{'lobby_up': 8, 'other_up': 0, 'down': 1, 'to_lobby': 0}]}, ['interfloor']), ('control 1', {'windows': [{'lobby_up': 0, 'other_up': 2, 'down': 3, 'to_lobby': 3}, {'lobby_up': 10, 'other_up': 4, 'down': 12, 'to_lobby': 11}, {'lobby_up': 0, 'other_up': 6, 'down': 8, 'to_lobby': 2}, {'lobby_up': 17, 'other_up': 3, 'down': 17, 'to_lobby': 15}]}, ['interfloor', 'interfloor', 'interfloor', 'interfloor']), ('sampled regression 4', {'windows': [{'lobby_up': 18, 'other_up': 3, 'down': 8, 'to_lobby': 4}, {'lobby_up': 2, 'other_up': 3, 'down': 15, 'to_lobby': 5}, {'lobby_up': 20, 'other_up': 6, 'down': 15, 'to_lobby': 15}, {'lobby_up': 16, 'other_up': 5, 'down': 19, 'to_lobby': 2}, {'lobby_up': 19, 'other_up': 6, 'down': 16, 'to_lobby': 6}, {'lobby_up': 1, 'other_up': 8, 'down': 0, 'to_lobby': 0}, {'lobby_up': 1, 'other_up': 2, 'down': 8, 'to_lobby': 8}, {'lobby_up': 6, 'other_up': 6, 'down': 0, 'to_lobby': 0}]}, ['up-peak', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'down-peak', 'interfloor']), ('sampled regression 7', {'windows': [{'lobby_up': 17, 'other_up': 7, 'down': 6, 'to_lobby': 6}, {'lobby_up': 7, 'other_up': 3, 'down': 4, 'to_lobby': 3}, {'lobby_up': 20, 'other_up': 8, 'down': 2, 'to_lobby': 1}, {'lobby_up': 17, 'other_up': 7, 'down': 7, 'to_lobby': 6}, {'lobby_up': 2, 'other_up': 3, 'down': 8, 'to_lobby': 3}, {'lobby_up': 15, 'other_up': 3, 'down': 16, 'to_lobby': 7}, {'lobby_up': 5, 'other_up': 5, 'down': 1, 'to_lobby': 0}]}, ['interfloor', 'interfloor', 'up-peak', 'up-peak', 'interfloor', 'interfloor', 'interfloor'])], [('regression: quiet window ends a peak', {'windows': [{'lobby_up': 12, 'other_up': 2, 'down': 6, 'to_lobby': 0}, {'lobby_up': 6, 'other_up': 0, 'down': 2, 'to_lobby': 0}]}, ['up-peak', 'interfloor']), ('boundary: fraction just under sixty', {'windows': [{'lobby_up': 119, 'other_up': 41, 'down': 40, 'to_lobby': 0}]}, ['interfloor']), ('sampled regression 12', {'windows': [{'lobby_up': 16, 'other_up': 6, 'down': 0, 'to_lobby': 0}, {'lobby_up': 9, 'other_up': 4, 'down': 13, 'to_lobby': 8}, {'lobby_up': 6, 'other_up': 1, 'down': 17, 'to_lobby': 7}, {'lobby_up': 20, 'other_up': 8, 'down': 13, 'to_lobby': 11}, {'lobby_up': 19, 'other_up': 5, 'down': 0, 'to_lobby': 0}, {'lobby_up': 2, 'other_up': 6, 'down': 20, 'to_lobby': 10}, {'lobby_up': 17, 'other_up': 1, 'down': 5, 'to_lobby': 4}]}, ['up-peak', 'interfloor', 'interfloor', 'interfloor', 'up-peak', 'interfloor', 'up-peak']), ('boundary: quiet window cannot start a peak', {'windows': [{'lobby_up': 8, 'other_up': 0, 'down': 1, 'to_lobby': 0}]}, ['interfloor']), ('regression: exactly sixty percent', {'windows': [{'lobby_up': 6, 'other_up': 2, 'down': 2, 'to_lobby': 0}]}, ['up-peak']), ('sampled regression 15', {'windows': [{'lobby_up': 8, 'other_up': 2, 'down': 2, 'to_lobby': 2}, {'lobby_up': 2, 'other_up': 0, 'down': 19, 'to_lobby': 13}, {'lobby_up': 11, 'other_up': 7, 'down': 20, 'to_lobby': 2}, {'lobby_up': 13, 'other_up': 7, 'down': 5, 'to_lobby': 5}, {'lobby_up': 1, 'other_up': 6, 'down': 7, 'to_lobby': 2}, {'lobby_up': 3, 'other_up': 1, 'down': 20, 'to_lobby': 20}]}, ['up-peak', 'down-peak', 'interfloor', 'interfloor', 'interfloor', 'down-peak']), ('control 18', {'windows': [{'lobby_up': 9, 'other_up': 7, 'down': 0, 'to_lobby': 0}, {'lobby_up': 18, 'other_up': 8, 'down': 11, 'to_lobby': 5}, {'lobby_up': 2, 'other_up': 6, 'down': 8, 'to_lobby': 3}, {'lobby_up': 10, 'other_up': 4, 'down': 20, 'to_lobby': 1}, {'lobby_up': 13, 'other_up': 5, 'down': 19, 'to_lobby': 12}, {'lobby_up': 1, 'other_up': 5, 'down': 16, 'to_lobby': 4}, {'lobby_up': 12, 'other_up': 6, 'down': 11, 'to_lobby': 2}]}, ['interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor']), ('control 21', {'windows': [{'lobby_up': 8, 'other_up': 5, 'down': 6, 'to_lobby': 1}, {'lobby_up': 20, 'other_up': 1, 'down': 15, 'to_lobby': 8}, {'lobby_up': 10, 'other_up': 0, 'down': 0, 'to_lobby': 0}]}, ['interfloor', 'interfloor', 'up-peak'])], [('regression: exactly sixty percent', {'windows': [{'lobby_up': 6, 'other_up': 2, 'down': 2, 'to_lobby': 0}]}, ['up-peak']), ('boundary: fraction just under sixty', {'windows': [{'lobby_up': 119, 'other_up': 41, 'down': 40, 'to_lobby': 0}]}, ['interfloor']), ('sampled regression 20', {'windows': [{'lobby_up': 17, 'other_up': 3, 'down': 20, 'to_lobby': 3}, {'lobby_up': 13, 'other_up': 1, 'down': 12, 'to_lobby': 11}, {'lobby_up': 12, 'other_up': 4, 'down': 10, 'to_lobby': 7}, {'lobby_up': 14, 'other_up': 3, 'down': 2, 'to_lobby': 0}, {'lobby_up': 12, 'other_up': 4, 'down': 2, 'to_lobby': 0}, {'lobby_up': 17, 'other_up': 2, 'down': 9, 'to_lobby': 3}, {'lobby_up': 19, 'other_up': 0, 'down': 11, 'to_lobby': 1}]}, ['interfloor', 'interfloor', 'interfloor', 'up-peak', 'up-peak', 'up-peak', 'up-peak']), ('boundary: down peak', {'windows': [{'lobby_up': 1, 'other_up': 1, 'down': 18, 'to_lobby': 15}, {'lobby_up': 2, 'other_up': 2, 'down': 16, 'to_lobby': 7}]}, ['down-peak', 'interfloor']), ('regression: hysteresis keeps up-peak', {'windows': [{'lobby_up': 12, 'other_up': 2, 'down': 6, 'to_lobby': 0}, {'lobby_up': 9, 'other_up': 5, 'down': 6, 'to_lobby': 1}]}, ['up-peak', 'up-peak']), ('control 23', {'windows': [{'lobby_up': 6, 'other_up': 6, 'down': 20, 'to_lobby': 19}, {'lobby_up': 4, 'other_up': 7, 'down': 17, 'to_lobby': 9}, {'lobby_up': 3, 'other_up': 8, 'down': 7, 'to_lobby': 3}, {'lobby_up': 15, 'other_up': 8, 'down': 3, 'to_lobby': 2}]}, ['interfloor', 'interfloor', 'interfloor', 'interfloor']), ('sampled regression 26', {'windows': [{'lobby_up': 6, 'other_up': 0, 'down': 20, 'to_lobby': 17}, {'lobby_up': 17, 'other_up': 3, 'down': 18, 'to_lobby': 1}, {'lobby_up': 6, 'other_up': 5, 'down': 7, 'to_lobby': 0}, {'lobby_up': 17, 'other_up': 8, 'down': 20, 'to_lobby': 8}, {'lobby_up': 3, 'other_up': 5, 'down': 5, 'to_lobby': 0}, {'lobby_up': 12, 'other_up': 3, 'down': 20, 'to_lobby': 19}, {'lobby_up': 17, 'other_up': 2, 'down': 1, 'to_lobby': 1}, {'lobby_up': 7, 'other_up': 5, 'down': 9, 'to_lobby': 6}]}, ['down-peak', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'up-peak', 'interfloor']), ('sampled regression 29', {'windows': [{'lobby_up': 19, 'other_up': 4, 'down': 20, 'to_lobby': 10}, {'lobby_up': 6, 'other_up': 5, 'down': 9, 'to_lobby': 1}, {'lobby_up': 12, 'other_up': 0, 'down': 17, 'to_lobby': 0}, {'lobby_up': 19, 'other_up': 4, 'down': 8, 'to_lobby': 1}]}, ['interfloor', 'interfloor', 'interfloor', 'up-peak'])], [('regression: hysteresis keeps up-peak', {'windows': [{'lobby_up': 12, 'other_up': 2, 'down': 6, 'to_lobby': 0}, {'lobby_up': 9, 'other_up': 5, 'down': 6, 'to_lobby': 1}]}, ['up-peak', 'up-peak']), ('boundary: fraction just under sixty', {'windows': [{'lobby_up': 119, 'other_up': 41, 'down': 40, 'to_lobby': 0}]}, ['interfloor']), ('sampled regression 32', {'windows': [{'lobby_up': 6, 'other_up': 6, 'down': 1, 'to_lobby': 0}, {'lobby_up': 10, 'other_up': 0, 'down': 19, 'to_lobby': 12}, {'lobby_up': 17, 'other_up': 4, 'down': 2, 'to_lobby': 1}]}, ['interfloor', 'interfloor', 'up-peak']), ('regression: quiet window ends a peak', {'windows': [{'lobby_up': 12, 'other_up': 2, 'down': 6, 'to_lobby': 0}, {'lobby_up': 6, 'other_up': 0, 'down': 2, 'to_lobby': 0}]}, ['up-peak', 'interfloor']), ('boundary: quiet window cannot start a peak', {'windows': [{'lobby_up': 8, 'other_up': 0, 'down': 1, 'to_lobby': 0}]}, ['interfloor']), ('sampled regression 34', {'windows': [{'lobby_up': 14, 'other_up': 3, 'down': 13, 'to_lobby': 8}, {'lobby_up': 8, 'other_up': 4, 'down': 1, 'to_lobby': 1}, {'lobby_up': 20, 'other_up': 0, 'down': 3, 'to_lobby': 3}, {'lobby_up': 4, 'other_up': 5, 'down': 8, 'to_lobby': 7}, {'lobby_up': 6, 'other_up': 6, 'down': 19, 'to_lobby': 5}, {'lobby_up': 6, 'other_up': 5, 'down': 7, 'to_lobby': 5}]}, ['interfloor', 'up-peak', 'up-peak', 'interfloor', 'interfloor', 'interfloor']), ('control 37', {'windows': [{'lobby_up': 16, 'other_up': 8, 'down': 17, 'to_lobby': 12}, {'lobby_up': 16, 'other_up': 3, 'down': 11, 'to_lobby': 0}, {'lobby_up': 4, 'other_up': 8, 'down': 1, 'to_lobby': 0}, {'lobby_up': 10, 'other_up': 5, 'down': 8, 'to_lobby': 5}]}, ['interfloor', 'interfloor', 'interfloor', 'interfloor']), ('sampled regression 40', {'windows': [{'lobby_up': 7, 'other_up': 6, 'down': 2, 'to_lobby': 1}, {'lobby_up': 11, 'other_up': 2, 'down': 1, 'to_lobby': 0}, {'lobby_up': 18, 'other_up': 7, 'down': 16, 'to_lobby': 4}, {'lobby_up': 0, 'other_up': 8, 'down': 18, 'to_lobby': 1}, {'lobby_up': 1, 'other_up': 2, 'down': 12, 'to_lobby': 9}, {'lobby_up': 7, 'other_up': 3, 'down': 0, 'to_lobby': 0}]}, ['interfloor', 'up-peak', 'up-peak', 'interfloor', 'down-peak', 'up-peak'])], [('regression: quiet window ends a peak', {'windows': [{'lobby_up': 12, 'other_up': 2, 'down': 6, 'to_lobby': 0}, {'lobby_up': 6, 'other_up': 0, 'down': 2, 'to_lobby': 0}]}, ['up-peak', 'interfloor']), ('boundary: fraction just under sixty', {'windows': [{'lobby_up': 119, 'other_up': 41, 'down': 40, 'to_lobby': 0}]}, ['interfloor']), ('sampled regression 47', {'windows': [{'lobby_up': 2, 'other_up': 7, 'down': 18, 'to_lobby': 2}, {'lobby_up': 19, 'other_up': 5, 'down': 2, 'to_lobby': 2}, {'lobby_up': 0, 'other_up': 1, 'down': 6, 'to_lobby': 6}, {'lobby_up': 15, 'other_up': 6, 'down': 3, 'to_lobby': 3}, {'lobby_up': 15, 'other_up': 0, 'down': 16, 'to_lobby': 6}, {'lobby_up': 2, 'other_up': 1, 'down': 5, 'to_lobby': 3}, {'lobby_up': 12, 'other_up': 4, 'down': 8, 'to_lobby': 8}]}, ['interfloor', 'up-peak', 'interfloor', 'up-peak', 'up-peak', 'interfloor', 'interfloor']), ('boundary: quiet window cannot start a peak', {'windows': [{'lobby_up': 8, 'other_up': 0, 'down': 1, 'to_lobby': 0}]}, ['interfloor']), ('regression: exactly sixty percent', {'windows': [{'lobby_up': 6, 'other_up': 2, 'down': 2, 'to_lobby': 0}]}, ['up-peak']), ('control 45', {'windows': [{'lobby_up': 15, 'other_up': 5, 'down': 7, 'to_lobby': 2}, {'lobby_up': 5, 'other_up': 7, 'down': 14, 'to_lobby': 0}, {'lobby_up': 17, 'other_up': 2, 'down': 13, 'to_lobby': 4}, {'lobby_up': 3, 'other_up': 3, 'down': 10, 'to_lobby': 7}]}, ['interfloor', 'interfloor', 'interfloor', 'interfloor']), ('sampled regression 48', {'windows': [{'lobby_up': 0, 'other_up': 3, 'down': 12, 'to_lobby': 1}, {'lobby_up': 19, 'other_up': 1, 'down': 12, 'to_lobby': 11}, {'lobby_up': 8, 'other_up': 2, 'down': 4, 'to_lobby': 3}, {'lobby_up': 18, 'other_up': 8, 'down': 1, 'to_lobby': 0}, {'lobby_up': 9, 'other_up': 7, 'down': 18, 'to_lobby': 17}, {'lobby_up': 11, 'other_up': 1, 'down': 18, 'to_lobby': 7}, {'lobby_up': 10, 'other_up': 2, 'down': 15, 'to_lobby': 2}]}, ['interfloor', 'interfloor', 'interfloor', 'up-peak', 'interfloor', 'interfloor', 'interfloor']), ('sampled regression 51', {'windows': [{'lobby_up': 4, 'other_up': 0, 'down': 1, 'to_lobby': 0}, {'lobby_up': 16, 'other_up': 6, 'down': 19, 'to_lobby': 15}, {'lobby_up': 13, 'other_up': 6, 'down': 3, 'to_lobby': 3}, {'lobby_up': 15, 'other_up': 0, 'down': 16, 'to_lobby': 2}, {'lobby_up': 20, 'other_up': 8, 'down': 11, 'to_lobby': 7}, {'lobby_up': 10, 'other_up': 5, 'down': 6, 'to_lobby': 1}, {'lobby_up': 12, 'other_up': 6, 'down': 19, 'to_lobby': 0}, {'lobby_up': 20, 'other_up': 2, 'down': 1, 'to_lobby': 1}]}, ['interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'up-peak'])]]
for label, args, expected in fixtures[N-1]:
    check(label, solve(args), expected)
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 fixture	Actual	Expected	Outcome
regression: hysteresis keeps up-peak	`['up-peak', 'up-peak']`	`['up-peak', 'up-peak']`	Passed
boundary: fraction just under sixty	`['interfloor']`	`['interfloor']`	Passed
sampled regression 3	`['interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'up-peak']`	`['interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'up-peak']`	Passed
regression: quiet window ends a peak	`['up-peak', 'interfloor']`	`['up-peak', 'interfloor']`	Passed
boundary: quiet window cannot start a peak	`['interfloor']`	`['interfloor']`	Passed
control 1	`['interfloor', 'interfloor', 'interfloor', 'interfloor']`	`['interfloor', 'interfloor', 'interfloor', 'interfloor']`	Passed
sampled regression 4	`['up-peak', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'down-peak', 'interfloor']`	`['up-peak', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'interfloor', 'down-peak', 'interfloor']`	Passed
sampled regression 7	`['interfloor', 'interfloor', 'up-peak', 'up-peak', 'interfloor', 'interfloor', 'interfloor']`	`['interfloor', 'interfloor', 'up-peak', 'up-peak', 'interfloor', 'interfloor', 'interfloor']`	Passed

SHA-256 / 2ea051c84479e359f5fdd0d565bd6e9cec6d201273b63974769f5ba08b769859

Verification & scope

Stipulated toy lift-control contract for a bounded teaching model; it makes no claim of conformance to any lift code or vendor dispatcher and omits real safety cases. 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 2026-09-29T14:47:55.863860+00:00.

Case digest / c9093e9bb49d5abc97b5b114770137c66baeb7b62610c70e8a4a263fb2d7d056