FAILURE MAP
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FA-92416 / HVAC thermostat control / Open access

Heat pump compressor lockout has no release differential · case 01

Near the balance point the compressor and auxiliary heat swap every sample as outdoor temperature jitters.

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

ROOT CAUSE

Lockout state is recomputed from outdoor < comp_lockout each sample.

THE FAILURE

Lockout state is recomputed from outdoor < comp_lockout each sample.

Unsuccessful approach: Locking below the release temperature without state keeps the compressor off too long and still has no memory.

Case contract

Heat pump with electric auxiliary heat; samples are [indoor, outdoor, mode] in tenths F. The compressor is locked out when outdoor < comp_lockout and released when outdoor >= comp_lockout + 2.0 F. Stage 1 demand is indoor < sp - 1.0 F, stage 2 is indoor < sp - 3.0 F. Emergency mode: no compressor, aux on stage-1 demand. Compressor locked out: aux replaces it on stage-1 demand regardless of the aux lockout. Otherwise the compressor serves stage 1 and aux serves stage 2 only when outdoor <= aux_lockout. Return [compressor, aux] per sample.

Why this case matters

Residential and light-commercial thermostats make these decisions sample by sample; each defect changes equipment calls in a way that shows up as short cycling, comfort complaints or equipment stress.

1 / The failure

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

N = 1
observations = []
def solve(settings, samples):
    locked = False
    out = []
    for indoor, outdoor, mode in samples:
        locked = outdoor < settings['comp_lockout']
        stage1 = indoor < settings['sp'] - 10
        stage2 = indoor < settings['sp'] - 30
        if mode == 'emergency':
            comp, aux = False, stage1
        elif locked:
            comp, aux = False, stage1
        else:
            comp = stage1
            aux = stage2 and outdoor <= settings['aux_lockout']
        out.append([comp, aux])
    return out
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
fixtures = [[['regression: lockout band',
   [{'sp': 700, 'comp_lockout': 250, 'aux_lockout': 260},
    [[680, 300, 'normal'],
     [660, 300, 'normal'],
     [680, 240, 'normal'],
     [680, 265, 'normal'],
     [680, 275, 'normal'],
     [680, 275, 'emergency'],
     [705, 275, 'normal']]],
   [[True, False],
    [True, False],
    [False, True],
    [False, True],
    [True, False],
    [False, True],
    [False, False]]],
  ['regression: scenario 11',
   [{'sp': 700, 'comp_lockout': 100, 'aux_lockout': 260},
    [[673, 167, 'emergency'],
     [676, 142, 'normal'],
     [700, 107, 'normal'],
     [686, 119, 'normal'],
     [651, 114, 'normal'],
     [674, 78, 'normal'],
     [699, 85, 'normal'],
     [689, 119, 'normal'],
     [666, 128, 'normal'],
     [709, 159, 'normal'],
     [667, 190, 'emergency'],
     [645, 174, 'normal']]],
   [[False, True],
    [True, False],
    [False, False],
    [True, False],
    [True, True],
    [False, True],
    [False, False],
    [False, True],
    [True, True],
    [False, False],
    [False, True],
    [True, True]]],
  ['control: emergency deep demand',
   [{'sp': 700, 'comp_lockout': 250, 'aux_lockout': 260},
    [[660, 300, 'emergency'], [685, 300, 'emergency'], [660, 200, 'emergency']]],
   [[False, True], [False, True], [False, True]]],
  ['control: mild weather second stage',
   [{'sp': 700, 'comp_lockout': 100, 'aux_lockout': 350},
    [[660, 300, 'normal'], [660, 400, 'normal'], [685, 300, 'normal']]],
   [[True, True], [True, False], [True, False]]],
  ['control: scenario 1',
   [{'sp': 700, 'comp_lockout': 100, 'aux_lockout': 400},
    [[687, 348, 'normal'],
     [652, 381, 'normal'],
     [674, 420, 'normal'],
     [677, 440, 'normal'],
     [683, 450, 'normal'],
     [663, 450, 'normal'],
     [653, 450, 'emergency'],
     [676, 450, 'normal']]],
   [[True, False],
    [True, True],
    [True, False],
    [True, False],
    [True, False],
    [True, False],
    [False, True],
    [True, False]]],
  ['control: scenario 2',
   [{'sp': 700, 'comp_lockout': 200, 'aux_lockout': 350},
    [[699, 249, 'normal'],
     [700, 272, 'normal'],
     [645, 234, 'normal'],
     [690, 236, 'normal'],
     [673, 263, 'normal'],
     [640, 258, 'normal'],
     [654, 238, 'normal'],
     [643, 242, 'normal'],
     [684, 258, 'normal'],
     [708, 254, 'normal'],
     [694, 251, 'normal']]],
   [[False, False],
    [False, False],
    [True, True],
    [False, False],
    [True, False],
    [True, True],
    [True, True],
    [True, True],
    [True, False],
    [False, False],
    [False, False]]],
  ['control: scenario 3',
   [{'sp': 700, 'comp_lockout': 100, 'aux_lockout': 400},
    [[686, 162, 'normal'],
     [670, 135, 'normal'],
     [670, 167, 'normal'],
     [669, 193, 'normal'],
     [644, 179, 'normal'],
     [688, 208, 'normal'],
     [667, 194, 'normal'],
     [675, 157, 'emergency'],
     [694, 183, 'normal']]],
   [[True, False],
    [True, False],
    [True, False],
    [True, True],
    [True, True],
    [True, False],
    [True, True],
    [False, True],
    [False, False]]],
  ['control: scenario 4',
   [{'sp': 700, 'comp_lockout': 100, 'aux_lockout': 400},
    [[644, 286, 'normal'],
     [705, 298, 'normal'],
     [682, 281, 'emergency'],
     [671, 281, 'normal'],
     [648, 278, 'normal'],
     [676, 245, 'normal'],
     [688, 265, 'normal'],
     [709, 228, 'normal'],
     [660, 218, 'normal'],
     [665, 244, 'normal'],
     [644, 223, 'emergency']]],
   [[True, True],
    [False, False],
    [False, True],
    [True, False],
    [True, True],
    [True, False],
    [True, False],
    [False, False],
    [True, True],
    [True, True],
    [False, True]]]],
 [['regression: scenario 13',
   [{'sp': 700, 'comp_lockout': 250, 'aux_lockout': 350},
    [[710, 253, 'emergency'],
     [657, 222, 'normal'],
     [664, 261, 'normal'],
     [691, 223, 'emergency'],
     [655, 231, 'normal'],
     [668, 223, 'emergency'],
     [693, 257, 'normal'],
     [662, 290, 'normal'],
     [674, 324, 'normal'],
     [663, 291, 'normal'],
     [660, 322, 'normal']]],
   [[False, False],
    [False, True],
    [False, True],
    [False, False],
    [False, True],
    [False, True],
    [False, False],
    [True, True],
    [True, False],
    [True, True],
    [True, True]]],
  ['regression: scenario 3',
   [{'sp': 700, 'comp_lockout': 200, 'aux_lockout': 260},
    [[692, 278, 'normal'],
     [691, 268, 'normal'],
     [684, 292, 'normal'],
     [688, 283, 'normal'],
     [653, 265, 'normal'],
     [680, 269, 'emergency'],
     [707, 242, 'normal'],
     [669, 239, 'emergency'],
     [643, 234, 'normal'],
     [651, 213, 'normal'],
     [644, 185, 'normal'],
     [647, 176, 'normal'],
     [663, 170, 'normal']]],
   [[False, False],
    [False, False],
    [True, False],
    [True, False],
    [True, False],
    [False, True],
    [False, False],
    [False, True],
    [True, True],
    [True, True],
    [False, True],
    [False, True],
    [False, True]]],
  ['regression: lockout band',
   [{'sp': 700, 'comp_lockout': 250, 'aux_lockout': 260},
    [[680, 300, 'normal'],
     [660, 300, 'normal'],
     [680, 240, 'normal'],
     [680, 265, 'normal'],
     [680, 275, 'normal'],
     [680, 275, 'emergency'],
     [705, 275, 'normal']]],
   [[True, False],
    [True, False],
    [False, True],
    [False, True],
    [True, False],
    [False, True],
    [False, False]]],
  ['control: emergency deep demand',
   [{'sp': 700, 'comp_lockout': 250, 'aux_lockout': 260},
    [[660, 300, 'emergency'], [685, 300, 'emergency'], [660, 200, 'emergency']]],
   [[False, True], [False, True], [False, True]]],
  ['control: mild weather second stage',
   [{'sp': 700, 'comp_lockout': 100, 'aux_lockout': 350},
    [[660, 300, 'normal'], [660, 400, 'normal'], [685, 300, 'normal']]],
   [[True, True], [True, False], [True, False]]],
  ['control: scenario 1',
   [{'sp': 700, 'comp_lockout': 250, 'aux_lockout': 400},
    [[678, 181, 'normal'],
     [678, 142, 'normal'],
     [683, 132, 'normal'],
     [658, 153, 'normal'],
     [693, 132, 'normal'],
     [649, 113, 'normal'],
     [678, 138, 'emergency'],
     [696, 166, 'emergency']]],
   [[False, True],
    [False, True],
    [False, True],
    [False, True],
    [False, False],
    [False, True],
    [False, True],
    [False, False]]],
  ['regression: scenario 2',
   [{'sp': 700, 'comp_lockout': 250, 'aux_lockout': 350},
    [[697, 219, 'normal'],
     [704, 237, 'normal'],
     [668, 209, 'emergency'],
     [683, 245, 'normal'],
     [642, 277, 'normal'],
     [657, 316, 'normal'],
     [702, 302, 'normal'],
     [678, 281, 'normal'],
     [661, 253, 'normal']]],
   [[False, False],
    [False, False],
    [False, True],
    [False, True],
    [True, True],
    [True, True],
    [False, False],
    [True, False],
    [True, True]]],
  ['control: scenario 4',
   [{'sp': 700, 'comp_lockout': 100, 'aux_lockout': 400},
    [[698, 201, 'normal'],
     [643, 184, 'normal'],
     [672, 162, 'normal'],
     [705, 174, 'normal'],
     [677, 136, 'normal'],
     [672, 158, 'normal'],
     [648, 177, 'emergency'],
     [670, 217, 'normal'],
     [654, 224, 'normal'],
     [658, 203, 'normal'],
     [659, 228, 'normal'],
     [710, 227, 'normal']]],
   [[False, False],
    [True, True],
    [True, False],
    [False, False],
    [True, False],
    [True, False],
    [False, True],
    [True, False],
    [True, True],
    [True, True],
    [True, True],
    [False, False]]]],
 [['regression: scenario 5',
   [{'sp': 700, 'comp_lockout': 200, 'aux_lockout': 400},
    [[660, 230, 'emergency'],
     [682, 226, 'normal'],
     [678, 266, 'normal'],
     [651, 246, 'normal'],
     [666, 260, 'normal'],
     [710, 220, 'normal'],
     [691, 190, 'normal'],
     [700, 168, 'emergency'],
     [661, 186, 'normal'],
     [665, 195, 'normal'],
     [666, 222, 'normal'],
     [697, 194, 'normal'],
     [677, 202, 'normal']]],
   [[False, True],
    [True, False],
    [True, False],
    [True, True],
    [True, True],
    [False, False],
    [False, False],
    [False, False],
    [False, True],
    [False, True],
    [True, True],
    [False, False],
    [False, True]]],
  ['regression: scenario 26',
   [{'sp': 700, 'comp_lockout': 100, 'aux_lockout': 400},
    [[684, 153, 'normal'],
     [644, 179, 'normal'],
     [710, 153, 'normal'],
     [669, 122, 'normal'],
     [682, 158, 'normal'],
     [654, 138, 'normal'],
     [662, 142, 'normal'],
     [684, 119, 'normal'],
     [660, 122, 'normal'],
     [705, 148, 'normal'],
     [709, 180, 'normal'],
     [659, 175, 'normal'],
     [705, 158, 'normal']]],
   [[True, False],
    [True, True],
    [False, False],
    [True, True],
    [True, False],
    [True, True],
    [True, True],
    [True, False],
    [True, True],
    [False, False],
    [False, False],
    [True, True],
    [False, False]]],
  ['regression: lockout band',
   [{'sp': 700, 'comp_lockout': 250, 'aux_lockout': 260},
    [[680, 300, 'normal'],
     [660, 300, 'normal'],
     [680, 240, 'normal'],
     [680, 265, 'normal'],
     [680, 275, 'normal'],
     [680, 275, 'emergency'],
     [705, 275, 'normal']]],
   [[True, False],
    [True, False],
    [False, True],
    [False, True],
    [True, False],
    [False, True],
    [False, False]]],
  ['control: emergency deep demand',
   [{'sp': 700, 'comp_lockout': 250, 'aux_lockout': 260},
    [[660, 300, 'emergency'], [685, 300, 'emergency'], [660, 200, 'emergency']]],
   [[False, True], [False, True], [False, True]]],
  ['control: mild weather second stage',
   [{'sp': 700, 'comp_lockout': 100, 'aux_lockout': 350},
    [[660, 300, 'normal'], [660, 400, 'normal'], [685, 300, 'normal']]],
   [[True, True], [True, False], [True, False]]],
  ['control: scenario 1',
   [{'sp': 700, 'comp_lockout': 100, 'aux_lockout': 350},
    [[656, 273, 'normal'],
     [679, 265, 'normal'],
     [672, 284, 'emergency'],
     [690, 310, 'normal'],
     [697, 308, 'normal'],
     [641, 322, 'emergency'],
     [679, 346, 'normal'],
     [640, 329, 'normal']]],
   [[True, True],
    [True, False],
    [False, True],
    [False, False],
    [False, False],
    [False, True],
    [True, False],
    [True, True]]],
  ['regression: scenario 2',
   [{'sp': 700, 'comp_lockout': 250, 'aux_lockout': 350},
    [[672, 231, 'normal'],
     [699, 194, 'normal'],
     [704, 214, 'emergency'],
     [667, 230, 'normal'],
     [666, 253, 'normal'],
     [654, 226, 'emergency'],
     [693, 222, 'normal'],
     [664, 244, 'normal'],
     [687, 282, 'normal']]],
   [[False, True],
    [False, False],
    [False, False],
    [False, True],
    [False, True],
    [False, True],
    [False, False],
    [False, True],
    [True, False]]],
  ['control: scenario 3',
   [{'sp': 700, 'comp_lockout': 250, 'aux_lockout': 400},
    [[678, 176, 'normal'],
     [691, 141, 'normal'],
     [686, 110, 'normal'],
     [675, 124, 'emergency'],
     [703, 99, 'normal'],
     [680, 101, 'normal'],
     [698, 114, 'normal'],
     [672, 121, 'emergency'],
     [691, 83, 'normal'],
     [656, 108, 'emergency'],
     [692, 99, 'emergency'],
     [643, 79, 'normal'],
     [648, 52, 'emergency']]],
   [[False, True],
    [False, False],
    [False, True],
    [False, True],
    [False, False],
    [False, True],
    [False, False],
    [False, True],
    [False, False],
    [False, True],
    [False, False],
    [False, True],
    [False, True]]]],
 [['regression: scenario 30',
   [{'sp': 700, 'comp_lockout': 250, 'aux_lockout': 400},
    [[658, 169, 'normal'],
     [681, 176, 'normal'],
     [691, 189, 'normal'],
     [677, 190, 'normal'],
     [707, 214, 'normal'],
     [691, 222, 'normal'],
     [656, 251, 'normal'],
     [642, 273, 'emergency'],
     [708, 246, 'normal'],
     [694, 243, 'normal'],
     [671, 203, 'emergency'],
     [697, 231, 'normal']]],
   [[False, True],
    [False, True],
    [False, False],
    [False, True],
    [False, False],
    [False, False],
    [False, True],
    [False, True],
    [False, False],
    [False, False],
    [False, True],
    [False, False]]],
  ['regression: scenario 59',
   [{'sp': 700, 'comp_lockout': 200, 'aux_lockout': 350},
    [[665, 339, 'normal'],
     [643, 312, 'normal'],
     [676, 307, 'normal'],
     [671, 289, 'normal'],
     [664, 274, 'normal'],
     [666, 282, 'normal'],
     [700, 283, 'emergency'],
     [693, 262, 'normal'],
     [651, 238, 'normal'],
     [670, 219, 'normal'],
     [684, 253, 'normal'],
     [668, 215, 'normal'],
     [668, 187, 'normal'],
     [692, 218, 'normal']]],
   [[True, True],
    [True, True],
    [True, False],
    [True, False],
    [True, True],
    [True, True],
    [False, False],
    [False, False],
    [True, True],
    [True, False],
    [True, False],
    [True, True],
    [False, True],
    [False, False]]],
  ['regression: lockout band',
   [{'sp': 700, 'comp_lockout': 250, 'aux_lockout': 260},
    [[680, 300, 'normal'],
     [660, 300, 'normal'],
     [680, 240, 'normal'],
     [680, 265, 'normal'],
     [680, 275, 'normal'],
     [680, 275, 'emergency'],
     [705, 275, 'normal']]],
   [[True, False],
    [True, False],
    [False, True],
    [False, True],
    [True, False],
    [False, True],
    [False, False]]],
  ['control: emergency deep demand',
   [{'sp': 700, 'comp_lockout': 250, 'aux_lockout': 260},
    [[660, 300, 'emergency'], [685, 300, 'emergency'], [660, 200, 'emergency']]],
   [[False, True], [False, True], [False, True]]],
  ['control: mild weather second stage',
   [{'sp': 700, 'comp_lockout': 100, 'aux_lockout': 350},
    [[660, 300, 'normal'], [660, 400, 'normal'], [685, 300, 'normal']]],
   [[True, True], [True, False], [True, False]]],
  ['control: scenario 1',
   [{'sp': 700, 'comp_lockout': 250, 'aux_lockout': 350},
    [[646, 150, 'normal'],
     [640, 123, 'normal'],
     [670, 110, 'normal'],
     [675, 118, 'normal'],
     [648, 101, 'normal'],
     [649, 91, 'normal'],
     [710, 74, 'normal'],
     [697, 95, 'normal'],
     [708, 135, 'normal'],
     [649, 147, 'normal'],
     [671, 109, 'normal'],
     [710, 89, 'normal']]],
   [[False, True],
    [False, True],
    [False, True],
    [False, True],
    [False, True],
    [False, True],
    [False, False],
    [False, False],
    [False, False],
    [False, True],
    [False, True],
    [False, False]]],
  ['control: scenario 2',
   [{'sp': 700, 'comp_lockout': 100, 'aux_lockout': 260},
    [[658, 406, 'emergency'],
     [643, 441, 'emergency'],
     [654, 450, 'normal'],
     [657, 450, 'normal'],
     [665, 450, 'normal'],
     [695, 448, 'normal'],
     [697, 442, 'normal'],
     [675, 450, 'normal'],
     [708, 418, 'emergency'],
     [709, 386, 'normal'],
     [681, 419, 'normal']]],
   [[False, True],
    [False, True],
    [True, False],
    [True, False],
    [True, False],
    [False, False],
    [False, False],
    [True, False],
    [False, False],
    [False, False],
    [True, False]]],
  ['control: scenario 3',
   [{'sp': 700, 'comp_lockout': 200, 'aux_lockout': 350},
    [[690, 409, 'emergency'],
     [686, 373, 'normal'],
     [681, 348, 'normal'],
     [644, 353, 'normal'],
     [673, 341, 'normal'],
     [673, 370, 'emergency'],
     [680, 331, 'normal'],
     [708, 324, 'normal'],
     [641, 331, 'normal'],
     [660, 331, 'normal'],
     [697, 361, 'normal'],
     [691, 365, 'emergency'],
     [667, 390, 'normal']]],
   [[False, False],
    [True, False],
    [True, False],
    [True, False],
    [True, False],
    [False, True],
    [True, False],
    [False, False],
    [True, True],
    [True, True],
    [False, False],
    [False, False],
    [True, False]]]],
 [['regression: scenario 56',
   [{'sp': 700, 'comp_lockout': 200, 'aux_lockout': 260},
    [[687, 188, 'normal'],
     [695, 188, 'normal'],
     [667, 213, 'normal'],
     [682, 248, 'emergency'],
     [666, 278, 'normal'],
     [694, 258, 'normal'],
     [644, 298, 'normal'],
     [678, 280, 'normal'],
     [695, 250, 'normal'],
     [700, 231, 'normal'],
     [687, 237, 'normal'],
     [677, 248, 'emergency'],
     [642, 275, 'normal'],
     [692, 237, 'normal']]],
   [[False, True],
    [False, False],
    [False, True],
    [False, True],
    [True, False],
    [False, False],
    [True, False],
    [True, False],
    [False, False],
    [False, False],
    [True, False],
    [False, True],
    [True, False],
    [False, False]]],
  ['regression: scenario 33',
   [{'sp': 700, 'comp_lockout': 250, 'aux_lockout': 400},
    [[641, 231, 'normal'],
     [675, 205, 'normal'],
     [686, 205, 'normal'],
     [699, 218, 'normal'],
     [645, 241, 'emergency'],
     [657, 237, 'normal'],
     [686, 217, 'normal'],
     [644, 249, 'normal'],
     [642, 272, 'normal'],
     [668, 258, 'normal'],
     [679, 222, 'emergency'],
     [671, 252, 'normal']]],
   [[False, True],
    [False, True],
    [False, True],
    [False, False],
    [False, True],
    [False, True],
    [False, True],
    [False, True],
    [True, True],
    [True, True],
    [False, True],
    [False, True]]],
  ['regression: lockout band',
   [{'sp': 700, 'comp_lockout': 250, 'aux_lockout': 260},
    [[680, 300, 'normal'],
     [660, 300, 'normal'],
     [680, 240, 'normal'],
     [680, 265, 'normal'],
     [680, 275, 'normal'],
     [680, 275, 'emergency'],
     [705, 275, 'normal']]],
   [[True, False],
    [True, False],
    [False, True],
    [False, True],
    [True, False],
    [False, True],
    [False, False]]],
  ['control: emergency deep demand',
   [{'sp': 700, 'comp_lockout': 250, 'aux_lockout': 260},
    [[660, 300, 'emergency'], [685, 300, 'emergency'], [660, 200, 'emergency']]],
   [[False, True], [False, True], [False, True]]],
  ['control: mild weather second stage',
   [{'sp': 700, 'comp_lockout': 100, 'aux_lockout': 350},
    [[660, 300, 'normal'], [660, 400, 'normal'], [685, 300, 'normal']]],
   [[True, True], [True, False], [True, False]]],
  ['control: scenario 1',
   [{'sp': 700, 'comp_lockout': 250, 'aux_lockout': 260},
    [[678, 197, 'normal'],
     [653, 218, 'normal'],
     [654, 208, 'normal'],
     [686, 178, 'normal'],
     [675, 155, 'normal'],
     [678, 163, 'normal'],
     [708, 201, 'normal'],
     [702, 220, 'normal'],
     [697, 255, 'normal']]],
   [[False, True],
    [False, True],
    [False, True],
    [False, True],
    [False, True],
    [False, True],
    [False, False],
    [False, False],
    [False, False]]],
  ['control: scenario 2',
   [{'sp': 700, 'comp_lockout': 200, 'aux_lockout': 350},
    [[696, 417, 'normal'],
     [700, 441, 'normal'],
     [669, 443, 'normal'],
     [695, 420, 'normal'],
     [699, 380, 'normal'],
     [657, 360, 'emergency'],
     [665, 359, 'normal'],
     [646, 335, 'emergency'],
     [705, 331, 'normal'],
     [699, 371, 'emergency'],
     [696, 334, 'emergency'],
     [698, 318, 'normal']]],
   [[False, False],
    [False, False],
    [True, False],
    [False, False],
    [False, False],
    [False, True],
    [True, False],
    [False, True],
    [False, False],
    [False, False],
    [False, False],
    [False, False]]],
  ['control: scenario 3',
   [{'sp': 700, 'comp_lockout': 100, 'aux_lockout': 350},
    [[670, 296, 'normal'],
     [694, 303, 'normal'],
     [704, 303, 'normal'],
     [692, 316, 'normal'],
     [688, 277, 'normal'],
     [695, 304, 'normal'],
     [691, 336, 'normal'],
     [648, 337, 'normal'],
     [686, 313, 'normal']]],
   [[True, False],
    [False, False],
    [False, False],
    [False, False],
    [True, False],
    [False, False],
    [False, False],
    [True, True],
    [True, False]]]]]
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 fixtureActualExpectedOutcome
regression: lockout band[[True, False], [True, False], [False, True], [True, False], [True, False], [False, True], [False, False]][[True, False], [True, False], [False, True], [False, True], [True, False], [False, True], [False, False]]Failed
regression: scenario 11[[False, True], [True, False], [False, False], [True, False], [True, True], [False, True], [False, False], [True, False], [True, True], [False, False], [False, True], [True, True]][[False, True], [True, False], [False, False], [True, False], [True, True], [False, True], [False, False], [False, True], [True, True], [False, False], [False, True], [True, True]]Failed
control: emergency deep demand[[False, True], [False, True], [False, True]][[False, True], [False, True], [False, True]]Passed
control: mild weather second stage[[True, True], [True, False], [True, False]][[True, True], [True, False], [True, False]]Passed
control: scenario 1[[True, False], [True, True], [True, False], [True, False], [True, False], [True, False], [False, True], [True, False]][[True, False], [True, True], [True, False], [True, False], [True, False], [True, False], [False, True], [True, False]]Passed
control: scenario 2[[False, False], [False, False], [True, True], [False, False], [True, False], [True, True], [True, True], [True, True], [True, False], [False, False], [False, False]][[False, False], [False, False], [True, True], [False, False], [True, False], [True, True], [True, True], [True, True], [True, False], [False, False], [False, False]]Passed
control: scenario 3[[True, False], [True, False], [True, False], [True, True], [True, True], [True, False], [True, True], [False, True], [False, False]][[True, False], [True, False], [True, False], [True, True], [True, True], [True, False], [True, True], [False, True], [False, False]]Passed
control: scenario 4[[True, True], [False, False], [False, True], [True, False], [True, True], [True, False], [True, False], [False, False], [True, True], [True, True], [False, True]][[True, True], [False, False], [False, True], [True, False], [True, True], [True, False], [True, False], [False, False], [True, True], [True, True], [False, True]]Passed

SHA-256 / ee58b20a093811752cb8a65bb4d72ef7b635850a763fd74c9c5fd9a99e19626b

2 / The unsuccessful fix

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

N = 1
observations = []
def solve(settings, samples):
    locked = False
    out = []
    for indoor, outdoor, mode in samples:
        locked = outdoor < settings['comp_lockout'] + 20
        stage1 = indoor < settings['sp'] - 10
        stage2 = indoor < settings['sp'] - 30
        if mode == 'emergency':
            comp, aux = False, stage1
        elif locked:
            comp, aux = False, stage1
        else:
            comp = stage1
            aux = stage2 and outdoor <= settings['aux_lockout']
        out.append([comp, aux])
    return out
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
fixtures = [[['regression: lockout band',
   [{'sp': 700, 'comp_lockout': 250, 'aux_lockout': 260},
    [[680, 300, 'normal'],
     [660, 300, 'normal'],
     [680, 240, 'normal'],
     [680, 265, 'normal'],
     [680, 275, 'normal'],
     [680, 275, 'emergency'],
     [705, 275, 'normal']]],
   [[True, False],
    [True, False],
    [False, True],
    [False, True],
    [True, False],
    [False, True],
    [False, False]]],
  ['regression: scenario 11',
   [{'sp': 700, 'comp_lockout': 100, 'aux_lockout': 260},
    [[673, 167, 'emergency'],
     [676, 142, 'normal'],
     [700, 107, 'normal'],
     [686, 119, 'normal'],
     [651, 114, 'normal'],
     [674, 78, 'normal'],
     [699, 85, 'normal'],
     [689, 119, 'normal'],
     [666, 128, 'normal'],
     [709, 159, 'normal'],
     [667, 190, 'emergency'],
     [645, 174, 'normal']]],
   [[False, True],
    [True, False],
    [False, False],
    [True, False],
    [True, True],
    [False, True],
    [False, False],
    [False, True],
    [True, True],
    [False, False],
    [False, True],
    [True, True]]],
  ['control: emergency deep demand',
   [{'sp': 700, 'comp_lockout': 250, 'aux_lockout': 260},
    [[660, 300, 'emergency'], [685, 300, 'emergency'], [660, 200, 'emergency']]],
   [[False, True], [False, True], [False, True]]],
  ['control: mild weather second stage',
   [{'sp': 700, 'comp_lockout': 100, 'aux_lockout': 350},
    [[660, 300, 'normal'], [660, 400, 'normal'], [685, 300, 'normal']]],
   [[True, True], [True, False], [True, False]]],
  ['control: scenario 1',
   [{'sp': 700, 'comp_lockout': 100, 'aux_lockout': 400},
    [[687, 348, 'normal'],
     [652, 381, 'normal'],
     [674, 420, 'normal'],
     [677, 440, 'normal'],
     [683, 450, 'normal'],
     [663, 450, 'normal'],
     [653, 450, 'emergency'],
     [676, 450, 'normal']]],
   [[True, False],
    [True, True],
    [True, False],
    [True, False],
    [True, False],
    [True, False],
    [False, True],
    [True, False]]],
  ['control: scenario 2',
   [{'sp': 700, 'comp_lockout': 200, 'aux_lockout': 350},
    [[699, 249, 'normal'],
     [700, 272, 'normal'],
     [645, 234, 'normal'],
     [690, 236, 'normal'],
     [673, 263, 'normal'],
     [640, 258, 'normal'],
     [654, 238, 'normal'],
     [643, 242, 'normal'],
     [684, 258, 'normal'],
     [708, 254, 'normal'],
     [694, 251, 'normal']]],
   [[False, False],
    [False, False],
    [True, True],
    [False, False],
    [True, False],
    [True, True],
    [True, True],
    [True, True],
    [True, False],
    [False, False],
    [False, False]]],
  ['control: scenario 3',
   [{'sp': 700, 'comp_lockout': 100, 'aux_lockout': 400},
    [[686, 162, 'normal'],
     [670, 135, 'normal'],
     [670, 167, 'normal'],
     [669, 193, 'normal'],
     [644, 179, 'normal'],
     [688, 208, 'normal'],
     [667, 194, 'normal'],
     [675, 157, 'emergency'],
     [694, 183, 'normal']]],
   [[True, False],
    [True, False],
    [True, False],
    [True, True],
    [True, True],
    [True, False],
    [True, True],
    [False, True],
    [False, False]]],
  ['control: scenario 4',
   [{'sp': 700, 'comp_lockout': 100, 'aux_lockout': 400},
    [[644, 286, 'normal'],
     [705, 298, 'normal'],
     [682, 281, 'emergency'],
     [671, 281, 'normal'],
     [648, 278, 'normal'],
     [676, 245, 'normal'],
     [688, 265, 'normal'],
     [709, 228, 'normal'],
     [660, 218, 'normal'],
     [665, 244, 'normal'],
     [644, 223, 'emergency']]],
   [[True, True],
    [False, False],
    [False, True],
    [True, False],
    [True, True],
    [True, False],
    [True, False],
    [False, False],
    [True, True],
    [True, True],
    [False, True]]]],
 [['regression: scenario 13',
   [{'sp': 700, 'comp_lockout': 250, 'aux_lockout': 350},
    [[710, 253, 'emergency'],
     [657, 222, 'normal'],
     [664, 261, 'normal'],
     [691, 223, 'emergency'],
     [655, 231, 'normal'],
     [668, 223, 'emergency'],
     [693, 257, 'normal'],
     [662, 290, 'normal'],
     [674, 324, 'normal'],
     [663, 291, 'normal'],
     [660, 322, 'normal']]],
   [[False, False],
    [False, True],
    [False, True],
    [False, False],
    [False, True],
    [False, True],
    [False, False],
    [True, True],
    [True, False],
    [True, True],
    [True, True]]],
  ['regression: scenario 3',
   [{'sp': 700, 'comp_lockout': 200, 'aux_lockout': 260},
    [[692, 278, 'normal'],
     [691, 268, 'normal'],
     [684, 292, 'normal'],
     [688, 283, 'normal'],
     [653, 265, 'normal'],
     [680, 269, 'emergency'],
     [707, 242, 'normal'],
     [669, 239, 'emergency'],
     [643, 234, 'normal'],
     [651, 213, 'normal'],
     [644, 185, 'normal'],
     [647, 176, 'normal'],
     [663, 170, 'normal']]],
   [[False, False],
    [False, False],
    [True, False],
    [True, False],
    [True, False],
    [False, True],
    [False, False],
    [False, True],
    [True, True],
    [True, True],
    [False, True],
    [False, True],
    [False, True]]],
  ['regression: lockout band',
   [{'sp': 700, 'comp_lockout': 250, 'aux_lockout': 260},
    [[680, 300, 'normal'],
     [660, 300, 'normal'],
     [680, 240, 'normal'],
     [680, 265, 'normal'],
     [680, 275, 'normal'],
     [680, 275, 'emergency'],
     [705, 275, 'normal']]],
   [[True, False],
    [True, False],
    [False, True],
    [False, True],
    [True, False],
    [False, True],
    [False, False]]],
  ['control: emergency deep demand',
   [{'sp': 700, 'comp_lockout': 250, 'aux_lockout': 260},
    [[660, 300, 'emergency'], [685, 300, 'emergency'], [660, 200, 'emergency']]],
   [[False, True], [False, True], [False, True]]],
  ['control: mild weather second stage',
   [{'sp': 700, 'comp_lockout': 100, 'aux_lockout': 350},
    [[660, 300, 'normal'], [660, 400, 'normal'], [685, 300, 'normal']]],
   [[True, True], [True, False], [True, False]]],
  ['control: scenario 1',
   [{'sp': 700, 'comp_lockout': 250, 'aux_lockout': 400},
    [[678, 181, 'normal'],
     [678, 142, 'normal'],
     [683, 132, 'normal'],
     [658, 153, 'normal'],
     [693, 132, 'normal'],
     [649, 113, 'normal'],
     [678, 138, 'emergency'],
     [696, 166, 'emergency']]],
   [[False, True],
    [False, True],
    [False, True],
    [False, True],
    [False, False],
    [False, True],
    [False, True],
    [False, False]]],
  ['regression: scenario 2',
   [{'sp': 700, 'comp_lockout': 250, 'aux_lockout': 350},
    [[697, 219, 'normal'],
     [704, 237, 'normal'],
     [668, 209, 'emergency'],
     [683, 245, 'normal'],
     [642, 277, 'normal'],
     [657, 316, 'normal'],
     [702, 302, 'normal'],
     [678, 281, 'normal'],
     [661, 253, 'normal']]],
   [[False, False],
    [False, False],
    [False, True],
    [False, True],
    [True, True],
    [True, True],
    [False, False],
    [True, False],
    [True, True]]],
  ['control: scenario 4',
   [{'sp': 700, 'comp_lockout': 100, 'aux_lockout': 400},
    [[698, 201, 'normal'],
     [643, 184, 'normal'],
     [672, 162, 'normal'],
     [705, 174, 'normal'],
     [677, 136, 'normal'],
     [672, 158, 'normal'],
     [648, 177, 'emergency'],
     [670, 217, 'normal'],
     [654, 224, 'normal'],
     [658, 203, 'normal'],
     [659, 228, 'normal'],
     [710, 227, 'normal']]],
   [[False, False],
    [True, True],
    [True, False],
    [False, False],
    [True, False],
    [True, False],
    [False, True],
    [True, False],
    [True, True],
    [True, True],
    [True, True],
    [False, False]]]],
 [['regression: scenario 5',
   [{'sp': 700, 'comp_lockout': 200, 'aux_lockout': 400},
    [[660, 230, 'emergency'],
     [682, 226, 'normal'],
     [678, 266, 'normal'],
     [651, 246, 'normal'],
     [666, 260, 'normal'],
     [710, 220, 'normal'],
     [691, 190, 'normal'],
     [700, 168, 'emergency'],
     [661, 186, 'normal'],
     [665, 195, 'normal'],
     [666, 222, 'normal'],
     [697, 194, 'normal'],
     [677, 202, 'normal']]],
   [[False, True],
    [True, False],
    [True, False],
    [True, True],
    [True, True],
    [False, False],
    [False, False],
    [False, False],
    [False, True],
    [False, True],
    [True, True],
    [False, False],
    [False, True]]],
  ['regression: scenario 26',
   [{'sp': 700, 'comp_lockout': 100, 'aux_lockout': 400},
    [[684, 153, 'normal'],
     [644, 179, 'normal'],
     [710, 153, 'normal'],
     [669, 122, 'normal'],
     [682, 158, 'normal'],
     [654, 138, 'normal'],
     [662, 142, 'normal'],
     [684, 119, 'normal'],
     [660, 122, 'normal'],
     [705, 148, 'normal'],
     [709, 180, 'normal'],
     [659, 175, 'normal'],
     [705, 158, 'normal']]],
   [[True, False],
    [True, True],
    [False, False],
    [True, True],
    [True, False],
    [True, True],
    [True, True],
    [True, False],
    [True, True],
    [False, False],
    [False, False],
    [True, True],
    [False, False]]],
  ['regression: lockout band',
   [{'sp': 700, 'comp_lockout': 250, 'aux_lockout': 260},
    [[680, 300, 'normal'],
     [660, 300, 'normal'],
     [680, 240, 'normal'],
     [680, 265, 'normal'],
     [680, 275, 'normal'],
     [680, 275, 'emergency'],
     [705, 275, 'normal']]],
   [[True, False],
    [True, False],
    [False, True],
    [False, True],
    [True, False],
    [False, True],
    [False, False]]],
  ['control: emergency deep demand',
   [{'sp': 700, 'comp_lockout': 250, 'aux_lockout': 260},
    [[660, 300, 'emergency'], [685, 300, 'emergency'], [660, 200, 'emergency']]],
   [[False, True], [False, True], [False, True]]],
  ['control: mild weather second stage',
   [{'sp': 700, 'comp_lockout': 100, 'aux_lockout': 350},
    [[660, 300, 'normal'], [660, 400, 'normal'], [685, 300, 'normal']]],
   [[True, True], [True, False], [True, False]]],
  ['control: scenario 1',
   [{'sp': 700, 'comp_lockout': 100, 'aux_lockout': 350},
    [[656, 273, 'normal'],
     [679, 265, 'normal'],
     [672, 284, 'emergency'],
     [690, 310, 'normal'],
     [697, 308, 'normal'],
     [641, 322, 'emergency'],
     [679, 346, 'normal'],
     [640, 329, 'normal']]],
   [[True, True],
    [True, False],
    [False, True],
    [False, False],
    [False, False],
    [False, True],
    [True, False],
    [True, True]]],
  ['regression: scenario 2',
   [{'sp': 700, 'comp_lockout': 250, 'aux_lockout': 350},
    [[672, 231, 'normal'],
     [699, 194, 'normal'],
     [704, 214, 'emergency'],
     [667, 230, 'normal'],
     [666, 253, 'normal'],
     [654, 226, 'emergency'],
     [693, 222, 'normal'],
     [664, 244, 'normal'],
     [687, 282, 'normal']]],
   [[False, True],
    [False, False],
    [False, False],
    [False, True],
    [False, True],
    [False, True],
    [False, False],
    [False, True],
    [True, False]]],
  ['control: scenario 3',
   [{'sp': 700, 'comp_lockout': 250, 'aux_lockout': 400},
    [[678, 176, 'normal'],
     [691, 141, 'normal'],
     [686, 110, 'normal'],
     [675, 124, 'emergency'],
     [703, 99, 'normal'],
     [680, 101, 'normal'],
     [698, 114, 'normal'],
     [672, 121, 'emergency'],
     [691, 83, 'normal'],
     [656, 108, 'emergency'],
     [692, 99, 'emergency'],
     [643, 79, 'normal'],
     [648, 52, 'emergency']]],
   [[False, True],
    [False, False],
    [False, True],
    [False, True],
    [False, False],
    [False, True],
    [False, False],
    [False, True],
    [False, False],
    [False, True],
    [False, False],
    [False, True],
    [False, True]]]],
 [['regression: scenario 30',
   [{'sp': 700, 'comp_lockout': 250, 'aux_lockout': 400},
    [[658, 169, 'normal'],
     [681, 176, 'normal'],
     [691, 189, 'normal'],
     [677, 190, 'normal'],
     [707, 214, 'normal'],
     [691, 222, 'normal'],
     [656, 251, 'normal'],
     [642, 273, 'emergency'],
     [708, 246, 'normal'],
     [694, 243, 'normal'],
     [671, 203, 'emergency'],
     [697, 231, 'normal']]],
   [[False, True],
    [False, True],
    [False, False],
    [False, True],
    [False, False],
    [False, False],
    [False, True],
    [False, True],
    [False, False],
    [False, False],
    [False, True],
    [False, False]]],
  ['regression: scenario 59',
   [{'sp': 700, 'comp_lockout': 200, 'aux_lockout': 350},
    [[665, 339, 'normal'],
     [643, 312, 'normal'],
     [676, 307, 'normal'],
     [671, 289, 'normal'],
     [664, 274, 'normal'],
     [666, 282, 'normal'],
     [700, 283, 'emergency'],
     [693, 262, 'normal'],
     [651, 238, 'normal'],
     [670, 219, 'normal'],
     [684, 253, 'normal'],
     [668, 215, 'normal'],
     [668, 187, 'normal'],
     [692, 218, 'normal']]],
   [[True, True],
    [True, True],
    [True, False],
    [True, False],
    [True, True],
    [True, True],
    [False, False],
    [False, False],
    [True, True],
    [True, False],
    [True, False],
    [True, True],
    [False, True],
    [False, False]]],
  ['regression: lockout band',
   [{'sp': 700, 'comp_lockout': 250, 'aux_lockout': 260},
    [[680, 300, 'normal'],
     [660, 300, 'normal'],
     [680, 240, 'normal'],
     [680, 265, 'normal'],
     [680, 275, 'normal'],
     [680, 275, 'emergency'],
     [705, 275, 'normal']]],
   [[True, False],
    [True, False],
    [False, True],
    [False, True],
    [True, False],
    [False, True],
    [False, False]]],
  ['control: emergency deep demand',
   [{'sp': 700, 'comp_lockout': 250, 'aux_lockout': 260},
    [[660, 300, 'emergency'], [685, 300, 'emergency'], [660, 200, 'emergency']]],
   [[False, True], [False, True], [False, True]]],
  ['control: mild weather second stage',
   [{'sp': 700, 'comp_lockout': 100, 'aux_lockout': 350},
    [[660, 300, 'normal'], [660, 400, 'normal'], [685, 300, 'normal']]],
   [[True, True], [True, False], [True, False]]],
  ['control: scenario 1',
   [{'sp': 700, 'comp_lockout': 250, 'aux_lockout': 350},
    [[646, 150, 'normal'],
     [640, 123, 'normal'],
     [670, 110, 'normal'],
     [675, 118, 'normal'],
     [648, 101, 'normal'],
     [649, 91, 'normal'],
     [710, 74, 'normal'],
     [697, 95, 'normal'],
     [708, 135, 'normal'],
     [649, 147, 'normal'],
     [671, 109, 'normal'],
     [710, 89, 'normal']]],
   [[False, True],
    [False, True],
    [False, True],
    [False, True],
    [False, True],
    [False, True],
    [False, False],
    [False, False],
    [False, False],
    [False, True],
    [False, True],
    [False, False]]],
  ['control: scenario 2',
   [{'sp': 700, 'comp_lockout': 100, 'aux_lockout': 260},
    [[658, 406, 'emergency'],
     [643, 441, 'emergency'],
     [654, 450, 'normal'],
     [657, 450, 'normal'],
     [665, 450, 'normal'],
     [695, 448, 'normal'],
     [697, 442, 'normal'],
     [675, 450, 'normal'],
     [708, 418, 'emergency'],
     [709, 386, 'normal'],
     [681, 419, 'normal']]],
   [[False, True],
    [False, True],
    [True, False],
    [True, False],
    [True, False],
    [False, False],
    [False, False],
    [True, False],
    [False, False],
    [False, False],
    [True, False]]],
  ['control: scenario 3',
   [{'sp': 700, 'comp_lockout': 200, 'aux_lockout': 350},
    [[690, 409, 'emergency'],
     [686, 373, 'normal'],
     [681, 348, 'normal'],
     [644, 353, 'normal'],
     [673, 341, 'normal'],
     [673, 370, 'emergency'],
     [680, 331, 'normal'],
     [708, 324, 'normal'],
     [641, 331, 'normal'],
     [660, 331, 'normal'],
     [697, 361, 'normal'],
     [691, 365, 'emergency'],
     [667, 390, 'normal']]],
   [[False, False],
    [True, False],
    [True, False],
    [True, False],
    [True, False],
    [False, True],
    [True, False],
    [False, False],
    [True, True],
    [True, True],
    [False, False],
    [False, False],
    [True, False]]]],
 [['regression: scenario 56',
   [{'sp': 700, 'comp_lockout': 200, 'aux_lockout': 260},
    [[687, 188, 'normal'],
     [695, 188, 'normal'],
     [667, 213, 'normal'],
     [682, 248, 'emergency'],
     [666, 278, 'normal'],
     [694, 258, 'normal'],
     [644, 298, 'normal'],
     [678, 280, 'normal'],
     [695, 250, 'normal'],
     [700, 231, 'normal'],
     [687, 237, 'normal'],
     [677, 248, 'emergency'],
     [642, 275, 'normal'],
     [692, 237, 'normal']]],
   [[False, True],
    [False, False],
    [False, True],
    [False, True],
    [True, False],
    [False, False],
    [True, False],
    [True, False],
    [False, False],
    [False, False],
    [True, False],
    [False, True],
    [True, False],
    [False, False]]],
  ['regression: scenario 33',
   [{'sp': 700, 'comp_lockout': 250, 'aux_lockout': 400},
    [[641, 231, 'normal'],
     [675, 205, 'normal'],
     [686, 205, 'normal'],
     [699, 218, 'normal'],
     [645, 241, 'emergency'],
     [657, 237, 'normal'],
     [686, 217, 'normal'],
     [644, 249, 'normal'],
     [642, 272, 'normal'],
     [668, 258, 'normal'],
     [679, 222, 'emergency'],
     [671, 252, 'normal']]],
   [[False, True],
    [False, True],
    [False, True],
    [False, False],
    [False, True],
    [False, True],
    [False, True],
    [False, True],
    [True, True],
    [True, True],
    [False, True],
    [False, True]]],
  ['regression: lockout band',
   [{'sp': 700, 'comp_lockout': 250, 'aux_lockout': 260},
    [[680, 300, 'normal'],
     [660, 300, 'normal'],
     [680, 240, 'normal'],
     [680, 265, 'normal'],
     [680, 275, 'normal'],
     [680, 275, 'emergency'],
     [705, 275, 'normal']]],
   [[True, False],
    [True, False],
    [False, True],
    [False, True],
    [True, False],
    [False, True],
    [False, False]]],
  ['control: emergency deep demand',
   [{'sp': 700, 'comp_lockout': 250, 'aux_lockout': 260},
    [[660, 300, 'emergency'], [685, 300, 'emergency'], [660, 200, 'emergency']]],
   [[False, True], [False, True], [False, True]]],
  ['control: mild weather second stage',
   [{'sp': 700, 'comp_lockout': 100, 'aux_lockout': 350},
    [[660, 300, 'normal'], [660, 400, 'normal'], [685, 300, 'normal']]],
   [[True, True], [True, False], [True, False]]],
  ['control: scenario 1',
   [{'sp': 700, 'comp_lockout': 250, 'aux_lockout': 260},
    [[678, 197, 'normal'],
     [653, 218, 'normal'],
     [654, 208, 'normal'],
     [686, 178, 'normal'],
     [675, 155, 'normal'],
     [678, 163, 'normal'],
     [708, 201, 'normal'],
     [702, 220, 'normal'],
     [697, 255, 'normal']]],
   [[False, True],
    [False, True],
    [False, True],
    [False, True],
    [False, True],
    [False, True],
    [False, False],
    [False, False],
    [False, False]]],
  ['control: scenario 2',
   [{'sp': 700, 'comp_lockout': 200, 'aux_lockout': 350},
    [[696, 417, 'normal'],
     [700, 441, 'normal'],
     [669, 443, 'normal'],
     [695, 420, 'normal'],
     [699, 380, 'normal'],
     [657, 360, 'emergency'],
     [665, 359, 'normal'],
     [646, 335, 'emergency'],
     [705, 331, 'normal'],
     [699, 371, 'emergency'],
     [696, 334, 'emergency'],
     [698, 318, 'normal']]],
   [[False, False],
    [False, False],
    [True, False],
    [False, False],
    [False, False],
    [False, True],
    [True, False],
    [False, True],
    [False, False],
    [False, False],
    [False, False],
    [False, False]]],
  ['control: scenario 3',
   [{'sp': 700, 'comp_lockout': 100, 'aux_lockout': 350},
    [[670, 296, 'normal'],
     [694, 303, 'normal'],
     [704, 303, 'normal'],
     [692, 316, 'normal'],
     [688, 277, 'normal'],
     [695, 304, 'normal'],
     [691, 336, 'normal'],
     [648, 337, 'normal'],
     [686, 313, 'normal']]],
   [[True, False],
    [False, False],
    [False, False],
    [False, False],
    [True, False],
    [False, False],
    [False, False],
    [True, True],
    [True, False]]]]]
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 fixtureActualExpectedOutcome
regression: lockout band[[True, False], [True, False], [False, True], [False, True], [True, False], [False, True], [False, False]][[True, False], [True, False], [False, True], [False, True], [True, False], [False, True], [False, False]]Passed
regression: scenario 11[[False, True], [True, False], [False, False], [False, True], [False, True], [False, True], [False, False], [False, True], [True, True], [False, False], [False, True], [True, True]][[False, True], [True, False], [False, False], [True, False], [True, True], [False, True], [False, False], [False, True], [True, True], [False, False], [False, True], [True, True]]Failed
control: emergency deep demand[[False, True], [False, True], [False, True]][[False, True], [False, True], [False, True]]Passed
control: mild weather second stage[[True, True], [True, False], [True, False]][[True, True], [True, False], [True, False]]Passed
control: scenario 1[[True, False], [True, True], [True, False], [True, False], [True, False], [True, False], [False, True], [True, False]][[True, False], [True, True], [True, False], [True, False], [True, False], [True, False], [False, True], [True, False]]Passed
control: scenario 2[[False, False], [False, False], [True, True], [False, False], [True, False], [True, True], [True, True], [True, True], [True, False], [False, False], [False, False]][[False, False], [False, False], [True, True], [False, False], [True, False], [True, True], [True, True], [True, True], [True, False], [False, False], [False, False]]Passed
control: scenario 3[[True, False], [True, False], [True, False], [True, True], [True, True], [True, False], [True, True], [False, True], [False, False]][[True, False], [True, False], [True, False], [True, True], [True, True], [True, False], [True, True], [False, True], [False, False]]Passed
control: scenario 4[[True, True], [False, False], [False, True], [True, False], [True, True], [True, False], [True, False], [False, False], [True, True], [True, True], [False, True]][[True, True], [False, False], [False, True], [True, False], [True, True], [True, False], [True, False], [False, False], [True, True], [True, True], [False, True]]Passed

SHA-256 / cc0ba5df2e1bb75cf58f4b760d5b5fc243b46d37fabc798656645d064ab30546

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The verified repair and its recorded checks are member-only.

This mechanism has 8 recorded checks per implementation. The open-access tier publishes the failure and the unsuccessful fix; the repaired source that passes every check, and the observations that prove it, are available to members.

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Verification & scope

A deterministic bounded teaching model of one thermostat or HVAC controller decision evaluated per sample. Temperatures are integer tenths of a degree Fahrenheit unless stated otherwise. The contract is a stipulated toy convention, not a claim of conformance to any manufacturer, ASHRAE guideline or code. 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 2026-09-29T14:51:45.599857+00:00.

Case digest / 60011717df5f40bc885b69edc49a20a4aa4fe51e53a03f264e44d944fc81bb9b