diff --git a/src/Type/Constant/OversizedArrayBuilder.php b/src/Type/Constant/OversizedArrayBuilder.php
index b2200fd7c1..b9a10876ec 100644
--- a/src/Type/Constant/OversizedArrayBuilder.php
+++ b/src/Type/Constant/OversizedArrayBuilder.php
@@ -81,7 +81,7 @@ public function build(Array_ $expr, callable $getTypeCallback): Type
 				$nextAutoIndex++;
 			}
 
-			$generalizedKeyType = $itemKeyType->generalize(GeneralizePrecision::moreSpecific());
+			$generalizedKeyType = $itemKeyType->generalize(GeneralizePrecision::lessSpecific());
 			$keyTypes[$generalizedKeyType->describe(VerbosityLevel::precise())] = $generalizedKeyType;
 
 			$itemValueType = $getTypeCallback($item->value);
diff --git a/tests/PHPStan/Analyser/nsrt/bug-8636.php b/tests/PHPStan/Analyser/nsrt/bug-8636.php
new file mode 100644
index 0000000000..7fac3a4feb
--- /dev/null
+++ b/tests/PHPStan/Analyser/nsrt/bug-8636.php
@@ -0,0 +1,553 @@
+<?php
+
+namespace Bug8636;
+
+use function PHPStan\Testing\assertType;
+
+class Config
+{
+	const HUGE = [
+		'item_0' => 'value_0',
+		'item_1' => 'value_1',
+		'item_2' => 'value_2',
+		'item_3' => 'value_3',
+		'item_4' => 'value_4',
+		'item_5' => 'value_5',
+		'item_6' => 'value_6',
+		'item_7' => 'value_7',
+		'item_8' => 'value_8',
+		'item_9' => 'value_9',
+		'item_10' => 'value_10',
+		'item_11' => 'value_11',
+		'item_12' => 'value_12',
+		'item_13' => 'value_13',
+		'item_14' => 'value_14',
+		'item_15' => 'value_15',
+		'item_16' => 'value_16',
+		'item_17' => 'value_17',
+		'item_18' => 'value_18',
+		'item_19' => 'value_19',
+		'item_20' => 'value_20',
+		'item_21' => 'value_21',
+		'item_22' => 'value_22',
+		'item_23' => 'value_23',
+		'item_24' => 'value_24',
+		'item_25' => 'value_25',
+		'item_26' => 'value_26',
+		'item_27' => 'value_27',
+		'item_28' => 'value_28',
+		'item_29' => 'value_29',
+		'item_30' => 'value_30',
+		'item_31' => 'value_31',
+		'item_32' => 'value_32',
+		'item_33' => 'value_33',
+		'item_34' => 'value_34',
+		'item_35' => 'value_35',
+		'item_36' => 'value_36',
+		'item_37' => 'value_37',
+		'item_38' => 'value_38',
+		'item_39' => 'value_39',
+		'item_40' => 'value_40',
+		'item_41' => 'value_41',
+		'item_42' => 'value_42',
+		'item_43' => 'value_43',
+		'item_44' => 'value_44',
+		'item_45' => 'value_45',
+		'item_46' => 'value_46',
+		'item_47' => 'value_47',
+		'item_48' => 'value_48',
+		'item_49' => 'value_49',
+		'item_50' => 'value_50',
+		'item_51' => 'value_51',
+		'item_52' => 'value_52',
+		'item_53' => 'value_53',
+		'item_54' => 'value_54',
+		'item_55' => 'value_55',
+		'item_56' => 'value_56',
+		'item_57' => 'value_57',
+		'item_58' => 'value_58',
+		'item_59' => 'value_59',
+		'item_60' => 'value_60',
+		'item_61' => 'value_61',
+		'item_62' => 'value_62',
+		'item_63' => 'value_63',
+		'item_64' => 'value_64',
+		'item_65' => 'value_65',
+		'item_66' => 'value_66',
+		'item_67' => 'value_67',
+		'item_68' => 'value_68',
+		'item_69' => 'value_69',
+		'item_70' => 'value_70',
+		'item_71' => 'value_71',
+		'item_72' => 'value_72',
+		'item_73' => 'value_73',
+		'item_74' => 'value_74',
+		'item_75' => 'value_75',
+		'item_76' => 'value_76',
+		'item_77' => 'value_77',
+		'item_78' => 'value_78',
+		'item_79' => 'value_79',
+		'item_80' => 'value_80',
+		'item_81' => 'value_81',
+		'item_82' => 'value_82',
+		'item_83' => 'value_83',
+		'item_84' => 'value_84',
+		'item_85' => 'value_85',
+		'item_86' => 'value_86',
+		'item_87' => 'value_87',
+		'item_88' => 'value_88',
+		'item_89' => 'value_89',
+		'item_90' => 'value_90',
+		'item_91' => 'value_91',
+		'item_92' => 'value_92',
+		'item_93' => 'value_93',
+		'item_94' => 'value_94',
+		'item_95' => 'value_95',
+		'item_96' => 'value_96',
+		'item_97' => 'value_97',
+		'item_98' => 'value_98',
+		'item_99' => 'value_99',
+		'item_100' => 'value_100',
+		'item_101' => 'value_101',
+		'item_102' => 'value_102',
+		'item_103' => 'value_103',
+		'item_104' => 'value_104',
+		'item_105' => 'value_105',
+		'item_106' => 'value_106',
+		'item_107' => 'value_107',
+		'item_108' => 'value_108',
+		'item_109' => 'value_109',
+		'item_110' => 'value_110',
+		'item_111' => 'value_111',
+		'item_112' => 'value_112',
+		'item_113' => 'value_113',
+		'item_114' => 'value_114',
+		'item_115' => 'value_115',
+		'item_116' => 'value_116',
+		'item_117' => 'value_117',
+		'item_118' => 'value_118',
+		'item_119' => 'value_119',
+		'item_120' => 'value_120',
+		'item_121' => 'value_121',
+		'item_122' => 'value_122',
+		'item_123' => 'value_123',
+		'item_124' => 'value_124',
+		'item_125' => 'value_125',
+		'item_126' => 'value_126',
+		'item_127' => 'value_127',
+		'item_128' => 'value_128',
+		'item_129' => 'value_129',
+		'item_130' => 'value_130',
+		'item_131' => 'value_131',
+		'item_132' => 'value_132',
+		'item_133' => 'value_133',
+		'item_134' => 'value_134',
+		'item_135' => 'value_135',
+		'item_136' => 'value_136',
+		'item_137' => 'value_137',
+		'item_138' => 'value_138',
+		'item_139' => 'value_139',
+		'item_140' => 'value_140',
+		'item_141' => 'value_141',
+		'item_142' => 'value_142',
+		'item_143' => 'value_143',
+		'item_144' => 'value_144',
+		'item_145' => 'value_145',
+		'item_146' => 'value_146',
+		'item_147' => 'value_147',
+		'item_148' => 'value_148',
+		'item_149' => 'value_149',
+		'item_150' => 'value_150',
+		'item_151' => 'value_151',
+		'item_152' => 'value_152',
+		'item_153' => 'value_153',
+		'item_154' => 'value_154',
+		'item_155' => 'value_155',
+		'item_156' => 'value_156',
+		'item_157' => 'value_157',
+		'item_158' => 'value_158',
+		'item_159' => 'value_159',
+		'item_160' => 'value_160',
+		'item_161' => 'value_161',
+		'item_162' => 'value_162',
+		'item_163' => 'value_163',
+		'item_164' => 'value_164',
+		'item_165' => 'value_165',
+		'item_166' => 'value_166',
+		'item_167' => 'value_167',
+		'item_168' => 'value_168',
+		'item_169' => 'value_169',
+		'item_170' => 'value_170',
+		'item_171' => 'value_171',
+		'item_172' => 'value_172',
+		'item_173' => 'value_173',
+		'item_174' => 'value_174',
+		'item_175' => 'value_175',
+		'item_176' => 'value_176',
+		'item_177' => 'value_177',
+		'item_178' => 'value_178',
+		'item_179' => 'value_179',
+		'item_180' => 'value_180',
+		'item_181' => 'value_181',
+		'item_182' => 'value_182',
+		'item_183' => 'value_183',
+		'item_184' => 'value_184',
+		'item_185' => 'value_185',
+		'item_186' => 'value_186',
+		'item_187' => 'value_187',
+		'item_188' => 'value_188',
+		'item_189' => 'value_189',
+		'item_190' => 'value_190',
+		'item_191' => 'value_191',
+		'item_192' => 'value_192',
+		'item_193' => 'value_193',
+		'item_194' => 'value_194',
+		'item_195' => 'value_195',
+		'item_196' => 'value_196',
+		'item_197' => 'value_197',
+		'item_198' => 'value_198',
+		'item_199' => 'value_199',
+		'item_200' => 'value_200',
+		'item_201' => 'value_201',
+		'item_202' => 'value_202',
+		'item_203' => 'value_203',
+		'item_204' => 'value_204',
+		'item_205' => 'value_205',
+		'item_206' => 'value_206',
+		'item_207' => 'value_207',
+		'item_208' => 'value_208',
+		'item_209' => 'value_209',
+		'item_210' => 'value_210',
+		'item_211' => 'value_211',
+		'item_212' => 'value_212',
+		'item_213' => 'value_213',
+		'item_214' => 'value_214',
+		'item_215' => 'value_215',
+		'item_216' => 'value_216',
+		'item_217' => 'value_217',
+		'item_218' => 'value_218',
+		'item_219' => 'value_219',
+		'item_220' => 'value_220',
+		'item_221' => 'value_221',
+		'item_222' => 'value_222',
+		'item_223' => 'value_223',
+		'item_224' => 'value_224',
+		'item_225' => 'value_225',
+		'item_226' => 'value_226',
+		'item_227' => 'value_227',
+		'item_228' => 'value_228',
+		'item_229' => 'value_229',
+		'item_230' => 'value_230',
+		'item_231' => 'value_231',
+		'item_232' => 'value_232',
+		'item_233' => 'value_233',
+		'item_234' => 'value_234',
+		'item_235' => 'value_235',
+		'item_236' => 'value_236',
+		'item_237' => 'value_237',
+		'item_238' => 'value_238',
+		'item_239' => 'value_239',
+		'item_240' => 'value_240',
+		'item_241' => 'value_241',
+		'item_242' => 'value_242',
+		'item_243' => 'value_243',
+		'item_244' => 'value_244',
+		'item_245' => 'value_245',
+		'item_246' => 'value_246',
+		'item_247' => 'value_247',
+		'item_248' => 'value_248',
+		'item_249' => 'value_249',
+		'item_250' => 'value_250',
+		'item_251' => 'value_251',
+		'item_252' => 'value_252',
+		'item_253' => 'value_253',
+		'item_254' => 'value_254',
+		'item_255' => 'value_255',
+		'item_256' => 'value_256',
+		'item_257' => 'value_257',
+	];
+
+	public function testAccess(): void
+	{
+		// The oversized array type should use lessSpecific generalization for keys
+		// so string keys generalize to 'string' not 'literal-string&...'
+		// Value types use moreSpecific generalization to preserve detail
+		assertType('non-empty-array<string, literal-string&lowercase-string&non-falsy-string>&oversized-array', self::HUGE);
+
+		// Accessing a specific key should return the moreSpecific generalized value type
+		assertType('literal-string&lowercase-string&non-falsy-string', self::HUGE['item_0']);
+	}
+}
+
+class MixedConfig
+{
+	const HUGE_MIXED = [
+		0 => 'string_value',
+		1 => 'string_value',
+		2 => 'string_value',
+		3 => 'string_value',
+		4 => 'string_value',
+		5 => 'string_value',
+		6 => 'string_value',
+		7 => 'string_value',
+		8 => 'string_value',
+		9 => 'string_value',
+		10 => 'string_value',
+		11 => 'string_value',
+		12 => 'string_value',
+		13 => 'string_value',
+		14 => 'string_value',
+		15 => 'string_value',
+		16 => 'string_value',
+		17 => 'string_value',
+		18 => 'string_value',
+		19 => 'string_value',
+		20 => 'string_value',
+		21 => 'string_value',
+		22 => 'string_value',
+		23 => 'string_value',
+		24 => 'string_value',
+		25 => 'string_value',
+		26 => 'string_value',
+		27 => 'string_value',
+		28 => 'string_value',
+		29 => 'string_value',
+		30 => 'string_value',
+		31 => 'string_value',
+		32 => 'string_value',
+		33 => 'string_value',
+		34 => 'string_value',
+		35 => 'string_value',
+		36 => 'string_value',
+		37 => 'string_value',
+		38 => 'string_value',
+		39 => 'string_value',
+		40 => 'string_value',
+		41 => 'string_value',
+		42 => 'string_value',
+		43 => 'string_value',
+		44 => 'string_value',
+		45 => 'string_value',
+		46 => 'string_value',
+		47 => 'string_value',
+		48 => 'string_value',
+		49 => 'string_value',
+		50 => 'string_value',
+		51 => 'string_value',
+		52 => 'string_value',
+		53 => 'string_value',
+		54 => 'string_value',
+		55 => 'string_value',
+		56 => 'string_value',
+		57 => 'string_value',
+		58 => 'string_value',
+		59 => 'string_value',
+		60 => 'string_value',
+		61 => 'string_value',
+		62 => 'string_value',
+		63 => 'string_value',
+		64 => 'string_value',
+		65 => 'string_value',
+		66 => 'string_value',
+		67 => 'string_value',
+		68 => 'string_value',
+		69 => 'string_value',
+		70 => 'string_value',
+		71 => 'string_value',
+		72 => 'string_value',
+		73 => 'string_value',
+		74 => 'string_value',
+		75 => 'string_value',
+		76 => 'string_value',
+		77 => 'string_value',
+		78 => 'string_value',
+		79 => 'string_value',
+		80 => 'string_value',
+		81 => 'string_value',
+		82 => 'string_value',
+		83 => 'string_value',
+		84 => 'string_value',
+		85 => 'string_value',
+		86 => 'string_value',
+		87 => 'string_value',
+		88 => 'string_value',
+		89 => 'string_value',
+		90 => 'string_value',
+		91 => 'string_value',
+		92 => 'string_value',
+		93 => 'string_value',
+		94 => 'string_value',
+		95 => 'string_value',
+		96 => 'string_value',
+		97 => 'string_value',
+		98 => 'string_value',
+		99 => 'string_value',
+		100 => 'string_value',
+		101 => 'string_value',
+		102 => 'string_value',
+		103 => 'string_value',
+		104 => 'string_value',
+		105 => 'string_value',
+		106 => 'string_value',
+		107 => 'string_value',
+		108 => 'string_value',
+		109 => 'string_value',
+		110 => 'string_value',
+		111 => 'string_value',
+		112 => 'string_value',
+		113 => 'string_value',
+		114 => 'string_value',
+		115 => 'string_value',
+		116 => 'string_value',
+		117 => 'string_value',
+		118 => 'string_value',
+		119 => 'string_value',
+		120 => 'string_value',
+		121 => 'string_value',
+		122 => 'string_value',
+		123 => 'string_value',
+		124 => 'string_value',
+		125 => 'string_value',
+		126 => 'string_value',
+		127 => 'string_value',
+		128 => 'string_value',
+		129 => 'string_value',
+		130 => 'string_value',
+		131 => 'string_value',
+		132 => 'string_value',
+		133 => 'string_value',
+		134 => 'string_value',
+		135 => 'string_value',
+		136 => 'string_value',
+		137 => 'string_value',
+		138 => 'string_value',
+		139 => 'string_value',
+		140 => 'string_value',
+		141 => 'string_value',
+		142 => 'string_value',
+		143 => 'string_value',
+		144 => 'string_value',
+		145 => 'string_value',
+		146 => 'string_value',
+		147 => 'string_value',
+		148 => 'string_value',
+		149 => 'string_value',
+		150 => 'string_value',
+		151 => 'string_value',
+		152 => 'string_value',
+		153 => 'string_value',
+		154 => 'string_value',
+		155 => 'string_value',
+		156 => 'string_value',
+		157 => 'string_value',
+		158 => 'string_value',
+		159 => 'string_value',
+		160 => 'string_value',
+		161 => 'string_value',
+		162 => 'string_value',
+		163 => 'string_value',
+		164 => 'string_value',
+		165 => 'string_value',
+		166 => 'string_value',
+		167 => 'string_value',
+		168 => 'string_value',
+		169 => 'string_value',
+		170 => 'string_value',
+		171 => 'string_value',
+		172 => 'string_value',
+		173 => 'string_value',
+		174 => 'string_value',
+		175 => 'string_value',
+		176 => 'string_value',
+		177 => 'string_value',
+		178 => 'string_value',
+		179 => 'string_value',
+		180 => 'string_value',
+		181 => 'string_value',
+		182 => 'string_value',
+		183 => 'string_value',
+		184 => 'string_value',
+		185 => 'string_value',
+		186 => 'string_value',
+		187 => 'string_value',
+		188 => 'string_value',
+		189 => 'string_value',
+		190 => 'string_value',
+		191 => 'string_value',
+		192 => 'string_value',
+		193 => 'string_value',
+		194 => 'string_value',
+		195 => 'string_value',
+		196 => 'string_value',
+		197 => 'string_value',
+		198 => 'string_value',
+		199 => 'string_value',
+		200 => 'string_value',
+		201 => 'string_value',
+		202 => 'string_value',
+		203 => 'string_value',
+		204 => 'string_value',
+		205 => 'string_value',
+		206 => 'string_value',
+		207 => 'string_value',
+		208 => 'string_value',
+		209 => 'string_value',
+		210 => 'string_value',
+		211 => 'string_value',
+		212 => 'string_value',
+		213 => 'string_value',
+		214 => 'string_value',
+		215 => 'string_value',
+		216 => 'string_value',
+		217 => 'string_value',
+		218 => 'string_value',
+		219 => 'string_value',
+		220 => 'string_value',
+		221 => 'string_value',
+		222 => 'string_value',
+		223 => 'string_value',
+		224 => 'string_value',
+		225 => 'string_value',
+		226 => 'string_value',
+		227 => 'string_value',
+		228 => 'string_value',
+		229 => 'string_value',
+		230 => 'string_value',
+		231 => 'string_value',
+		232 => 'string_value',
+		233 => 'string_value',
+		234 => 'string_value',
+		235 => 'string_value',
+		236 => 'string_value',
+		237 => 'string_value',
+		238 => 'string_value',
+		239 => 'string_value',
+		240 => 'string_value',
+		241 => 'string_value',
+		242 => 'string_value',
+		243 => 'string_value',
+		244 => 'string_value',
+		245 => 'string_value',
+		246 => 'string_value',
+		247 => 'string_value',
+		248 => 'string_value',
+		249 => 'string_value',
+		250 => 'string_value',
+		251 => 'string_value',
+		252 => 'string_value',
+		253 => 'string_value',
+		254 => 'string_value',
+		255 => 'string_value',
+		256 => 'string_value',
+		257 => 42,
+	];
+
+	public function testMixedAccess(): void
+	{
+		// With int keys and mixed values, accessing by key should return general value type
+		assertType('(int|(literal-string&lowercase-string&non-falsy-string))', self::HUGE_MIXED[0]);
+
+		// Whole array type
+		assertType('non-empty-list<int|(literal-string&lowercase-string&non-falsy-string)>&oversized-array', self::HUGE_MIXED);
+	}
+}
diff --git a/tests/PHPStan/Rules/Methods/ReturnTypeRuleTest.php b/tests/PHPStan/Rules/Methods/ReturnTypeRuleTest.php
index 84e81f0f33..5ed2f10379 100644
--- a/tests/PHPStan/Rules/Methods/ReturnTypeRuleTest.php
+++ b/tests/PHPStan/Rules/Methods/ReturnTypeRuleTest.php
@@ -860,7 +860,7 @@ public function testBug8146bErrors(): void
 		$this->checkBenevolentUnionTypes = true;
 		$this->analyse([__DIR__ . '/data/bug-8146b-errors.php'], [
 			[
-				"Method Bug8146bError\LocationFixtures::getData() should return array<non-empty-string, array<non-empty-string, array{constituencies: non-empty-list<non-empty-string>, coordinates: array{lat: float, lng: float}}>> but returns array{Bács-Kiskun: array{Ágasegyháza: array{constituencies: array{'Bács-Kiskun 4.', true, false, Bug8146bError\X, null}, coordinates: array{lat: 46.8386043, lng: 19.4502899}}, Akasztó: array{constituencies: array{'Bács-Kiskun 3.'}, coordinates: array{lat: 46.6898175, lng: 19.205086}}, Apostag: array{constituencies: array{'Bács-Kiskun 3.'}, coordinates: array{lat: 46.8812652, lng: 18.9648478}}, Bácsalmás: array{constituencies: array{'Bács-Kiskun 5.'}, coordinates: array{lat: 46.1250396, lng: 19.3357509}}, Bácsbokod: array{constituencies: array{'Bács-Kiskun 6.'}, coordinates: array{lat: 46.1234737, lng: 19.155708}}, Bácsborsód: array{constituencies: array{'Bács-Kiskun 6.'}, coordinates: array{lat: 46.0989373, lng: 19.1566725}}, Bácsszentgyörgy: array{constituencies: array{'Bács-Kiskun 6.'}, coordinates: array{lat: 45.9746039, lng: 19.0398066}}, Bácsszőlős: array{constituencies: array{'Bács-Kiskun 5.'}, coordinates: array{lat: 46.1352003, lng: 19.4215997}}, ...}, Baranya: non-empty-array<literal-string&non-falsy-string, non-empty-array<literal-string&non-falsy-string, non-empty-array<int<0, max>|(literal-string&non-falsy-string), float|(literal-string&non-falsy-string)>>>, Békés: array{Almáskamarás: array{constituencies: array{'Békés 4.'}, coordinates: array{lat: 46.4617785, lng: 21.092448}}, Battonya: array{constituencies: array{'Békés 4.'}, coordinates: array{lat: 46.2902462, lng: 21.0199215}}, Békés: array{constituencies: array{'Békés 2.'}, coordinates: array{lat: 46.6704899, lng: 21.0434996}}, Békéscsaba: array{constituencies: array{'Békés 1.'}, coordinates: array{lat: 46.6735939, lng: 21.0877309}}, Békéssámson: array{constituencies: array{'Békés 4.'}, coordinates: array{lat: 46.4208677, lng: 20.6176498}}, Békésszentandrás: array{constituencies: array{'Békés 2.'}, coordinates: array{lat: 46.8715996, lng: 20.48336}}, Bélmegyer: array{constituencies: array{'Békés 3.'}, coordinates: array{lat: 46.8726019, lng: 21.1832832}}, Biharugra: array{constituencies: array{'Békés 3.'}, coordinates: array{lat: 46.9691009, lng: 21.5987651}}, ...}, Borsod-Abaúj-Zemplén: non-empty-array<literal-string&non-falsy-string, non-empty-array<literal-string&non-falsy-string, non-empty-array<int<0, max>|(literal-string&non-falsy-string), float|(literal-string&non-falsy-string)>>>, Budapest: array{'Budapest I. ker.': array{constituencies: array{'Budapest 01.'}, coordinates: array{lat: 47.4968219, lng: 19.037458}}, 'Budapest II. ker.': array{constituencies: array{'Budapest 03.', 'Budapest 04.'}, coordinates: array{lat: 47.5393329, lng: 18.986934}}, 'Budapest III. ker.': array{constituencies: array{'Budapest 04.', 'Budapest 10.'}, coordinates: array{lat: 47.5671768, lng: 19.0368517}}, 'Budapest IV. ker.': array{constituencies: array{'Budapest 11.', 'Budapest 12.'}, coordinates: array{lat: 47.5648915, lng: 19.0913149}}, 'Budapest V. ker.': array{constituencies: array{'Budapest 01.'}, coordinates: array{lat: 47.5002319, lng: 19.0520181}}, 'Budapest VI. ker.': array{constituencies: array{'Budapest 05.'}, coordinates: array{lat: 47.509863, lng: 19.0625813}}, 'Budapest VII. ker.': array{constituencies: array{'Budapest 05.'}, coordinates: array{lat: 47.5027289, lng: 19.073376}}, 'Budapest VIII. ker.': array{constituencies: array{'Budapest 01.', 'Budapest 06.'}, coordinates: array{lat: 47.4894184, lng: 19.070668}}, ...}, Csongrád-Csanád: array{Algyő: array{constituencies: array{'Csongrád-Csanád 4.'}, coordinates: array{lat: 46.3329625, lng: 20.207889}}, Ambrózfalva: array{constituencies: array{'Csongrád-Csanád 4.'}, coordinates: array{lat: 46.3501417, lng: 20.7313995}}, Apátfalva: array{constituencies: array{'Csongrád-Csanád 4.'}, coordinates: array{lat: 46.173317, lng: 20.5800472}}, Árpádhalom: array{constituencies: array{'Csongrád-Csanád 3.'}, coordinates: array{lat: 46.6158286, lng: 20.547733}}, Ásotthalom: array{constituencies: array{'Csongrád-Csanád 2.'}, coordinates: array{lat: 46.1995983, lng: 19.7833756}}, Baks: array{constituencies: array{'Csongrád-Csanád 3.'}, coordinates: array{lat: 46.5518708, lng: 20.1064166}}, Balástya: array{constituencies: array{'Csongrád-Csanád 3.'}, coordinates: array{lat: 46.4261828, lng: 20.004933}}, Bordány: array{constituencies: array{'Csongrád-Csanád 2.'}, coordinates: array{lat: 46.3194213, lng: 19.9227063}}, ...}, Fejér: array{Aba: array{constituencies: array{'Fejér 5.'}, coordinates: array{lat: 47.0328193, lng: 18.522359}}, Adony: array{constituencies: array{'Fejér 4.'}, coordinates: array{lat: 47.119831, lng: 18.8612469}}, Alap: array{constituencies: array{'Fejér 5.'}, coordinates: array{lat: 46.8075763, lng: 18.684028}}, Alcsútdoboz: array{constituencies: array{'Fejér 3.'}, coordinates: array{lat: 47.4277067, lng: 18.6030325}}, Alsószentiván: array{constituencies: array{'Fejér 5.'}, coordinates: array{lat: 46.7910573, lng: 18.732161}}, Bakonycsernye: array{constituencies: array{'Fejér 2.'}, coordinates: array{lat: 47.321719, lng: 18.0907379}}, Bakonykúti: array{constituencies: array{'Fejér 2.'}, coordinates: array{lat: 47.2458464, lng: 18.195769}}, Balinka: array{constituencies: array{'Fejér 2.'}, coordinates: array{lat: 47.3135736, lng: 18.1907168}}, ...}, Győr-Moson-Sopron: array{Abda: array{constituencies: array{'Győr-Moson-Sopron 5.'}, coordinates: array{lat: 47.6962149, lng: 17.5445786}}, Acsalag: array{constituencies: array{'Győr-Moson-Sopron 3.'}, coordinates: array{lat: 47.676095, lng: 17.1977771}}, Ágfalva: array{constituencies: array{'Győr-Moson-Sopron 4.'}, coordinates: array{lat: 47.688862, lng: 16.5110233}}, Agyagosszergény: array{constituencies: array{'Győr-Moson-Sopron 3.'}, coordinates: array{lat: 47.608545, lng: 16.9409912}}, Árpás: array{constituencies: array{'Győr-Moson-Sopron 3.'}, coordinates: array{lat: 47.5134127, lng: 17.3931579}}, Ásványráró: array{constituencies: array{'Győr-Moson-Sopron 5.'}, coordinates: array{lat: 47.8287695, lng: 17.499195}}, Babót: array{constituencies: array{'Győr-Moson-Sopron 3.'}, coordinates: array{lat: 47.5752269, lng: 17.0758604}}, Bágyogszovát: array{constituencies: array{'Győr-Moson-Sopron 3.'}, coordinates: array{lat: 47.5866036, lng: 17.3617273}}, ...}, ...}.",
+				"Method Bug8146bError\LocationFixtures::getData() should return array<non-empty-string, array<non-empty-string, array{constituencies: non-empty-list<non-empty-string>, coordinates: array{lat: float, lng: float}}>> but returns array{Bács-Kiskun: array{Ágasegyháza: array{constituencies: array{'Bács-Kiskun 4.', true, false, Bug8146bError\X, null}, coordinates: array{lat: 46.8386043, lng: 19.4502899}}, Akasztó: array{constituencies: array{'Bács-Kiskun 3.'}, coordinates: array{lat: 46.6898175, lng: 19.205086}}, Apostag: array{constituencies: array{'Bács-Kiskun 3.'}, coordinates: array{lat: 46.8812652, lng: 18.9648478}}, Bácsalmás: array{constituencies: array{'Bács-Kiskun 5.'}, coordinates: array{lat: 46.1250396, lng: 19.3357509}}, Bácsbokod: array{constituencies: array{'Bács-Kiskun 6.'}, coordinates: array{lat: 46.1234737, lng: 19.155708}}, Bácsborsód: array{constituencies: array{'Bács-Kiskun 6.'}, coordinates: array{lat: 46.0989373, lng: 19.1566725}}, Bácsszentgyörgy: array{constituencies: array{'Bács-Kiskun 6.'}, coordinates: array{lat: 45.9746039, lng: 19.0398066}}, Bácsszőlős: array{constituencies: array{'Bács-Kiskun 5.'}, coordinates: array{lat: 46.1352003, lng: 19.4215997}}, ...}, Baranya: non-empty-array<string, non-empty-array<literal-string&non-falsy-string, non-empty-array<int<0, max>|(literal-string&non-falsy-string), float|(literal-string&non-falsy-string)>>>, Békés: array{Almáskamarás: array{constituencies: array{'Békés 4.'}, coordinates: array{lat: 46.4617785, lng: 21.092448}}, Battonya: array{constituencies: array{'Békés 4.'}, coordinates: array{lat: 46.2902462, lng: 21.0199215}}, Békés: array{constituencies: array{'Békés 2.'}, coordinates: array{lat: 46.6704899, lng: 21.0434996}}, Békéscsaba: array{constituencies: array{'Békés 1.'}, coordinates: array{lat: 46.6735939, lng: 21.0877309}}, Békéssámson: array{constituencies: array{'Békés 4.'}, coordinates: array{lat: 46.4208677, lng: 20.6176498}}, Békésszentandrás: array{constituencies: array{'Békés 2.'}, coordinates: array{lat: 46.8715996, lng: 20.48336}}, Bélmegyer: array{constituencies: array{'Békés 3.'}, coordinates: array{lat: 46.8726019, lng: 21.1832832}}, Biharugra: array{constituencies: array{'Békés 3.'}, coordinates: array{lat: 46.9691009, lng: 21.5987651}}, ...}, Borsod-Abaúj-Zemplén: non-empty-array<string, non-empty-array<literal-string&non-falsy-string, non-empty-array<int<0, max>|(literal-string&non-falsy-string), float|(literal-string&non-falsy-string)>>>, Budapest: array{'Budapest I. ker.': array{constituencies: array{'Budapest 01.'}, coordinates: array{lat: 47.4968219, lng: 19.037458}}, 'Budapest II. ker.': array{constituencies: array{'Budapest 03.', 'Budapest 04.'}, coordinates: array{lat: 47.5393329, lng: 18.986934}}, 'Budapest III. ker.': array{constituencies: array{'Budapest 04.', 'Budapest 10.'}, coordinates: array{lat: 47.5671768, lng: 19.0368517}}, 'Budapest IV. ker.': array{constituencies: array{'Budapest 11.', 'Budapest 12.'}, coordinates: array{lat: 47.5648915, lng: 19.0913149}}, 'Budapest V. ker.': array{constituencies: array{'Budapest 01.'}, coordinates: array{lat: 47.5002319, lng: 19.0520181}}, 'Budapest VI. ker.': array{constituencies: array{'Budapest 05.'}, coordinates: array{lat: 47.509863, lng: 19.0625813}}, 'Budapest VII. ker.': array{constituencies: array{'Budapest 05.'}, coordinates: array{lat: 47.5027289, lng: 19.073376}}, 'Budapest VIII. ker.': array{constituencies: array{'Budapest 01.', 'Budapest 06.'}, coordinates: array{lat: 47.4894184, lng: 19.070668}}, ...}, Csongrád-Csanád: array{Algyő: array{constituencies: array{'Csongrád-Csanád 4.'}, coordinates: array{lat: 46.3329625, lng: 20.207889}}, Ambrózfalva: array{constituencies: array{'Csongrád-Csanád 4.'}, coordinates: array{lat: 46.3501417, lng: 20.7313995}}, Apátfalva: array{constituencies: array{'Csongrád-Csanád 4.'}, coordinates: array{lat: 46.173317, lng: 20.5800472}}, Árpádhalom: array{constituencies: array{'Csongrád-Csanád 3.'}, coordinates: array{lat: 46.6158286, lng: 20.547733}}, Ásotthalom: array{constituencies: array{'Csongrád-Csanád 2.'}, coordinates: array{lat: 46.1995983, lng: 19.7833756}}, Baks: array{constituencies: array{'Csongrád-Csanád 3.'}, coordinates: array{lat: 46.5518708, lng: 20.1064166}}, Balástya: array{constituencies: array{'Csongrád-Csanád 3.'}, coordinates: array{lat: 46.4261828, lng: 20.004933}}, Bordány: array{constituencies: array{'Csongrád-Csanád 2.'}, coordinates: array{lat: 46.3194213, lng: 19.9227063}}, ...}, Fejér: array{Aba: array{constituencies: array{'Fejér 5.'}, coordinates: array{lat: 47.0328193, lng: 18.522359}}, Adony: array{constituencies: array{'Fejér 4.'}, coordinates: array{lat: 47.119831, lng: 18.8612469}}, Alap: array{constituencies: array{'Fejér 5.'}, coordinates: array{lat: 46.8075763, lng: 18.684028}}, Alcsútdoboz: array{constituencies: array{'Fejér 3.'}, coordinates: array{lat: 47.4277067, lng: 18.6030325}}, Alsószentiván: array{constituencies: array{'Fejér 5.'}, coordinates: array{lat: 46.7910573, lng: 18.732161}}, Bakonycsernye: array{constituencies: array{'Fejér 2.'}, coordinates: array{lat: 47.321719, lng: 18.0907379}}, Bakonykúti: array{constituencies: array{'Fejér 2.'}, coordinates: array{lat: 47.2458464, lng: 18.195769}}, Balinka: array{constituencies: array{'Fejér 2.'}, coordinates: array{lat: 47.3135736, lng: 18.1907168}}, ...}, Győr-Moson-Sopron: array{Abda: array{constituencies: array{'Győr-Moson-Sopron 5.'}, coordinates: array{lat: 47.6962149, lng: 17.5445786}}, Acsalag: array{constituencies: array{'Győr-Moson-Sopron 3.'}, coordinates: array{lat: 47.676095, lng: 17.1977771}}, Ágfalva: array{constituencies: array{'Győr-Moson-Sopron 4.'}, coordinates: array{lat: 47.688862, lng: 16.5110233}}, Agyagosszergény: array{constituencies: array{'Győr-Moson-Sopron 3.'}, coordinates: array{lat: 47.608545, lng: 16.9409912}}, Árpás: array{constituencies: array{'Győr-Moson-Sopron 3.'}, coordinates: array{lat: 47.5134127, lng: 17.3931579}}, Ásványráró: array{constituencies: array{'Győr-Moson-Sopron 5.'}, coordinates: array{lat: 47.8287695, lng: 17.499195}}, Babót: array{constituencies: array{'Győr-Moson-Sopron 3.'}, coordinates: array{lat: 47.5752269, lng: 17.0758604}}, Bágyogszovát: array{constituencies: array{'Győr-Moson-Sopron 3.'}, coordinates: array{lat: 47.5866036, lng: 17.3617273}}, ...}, ...}.",
 				12,
 				"Offset 'constituencies' (non-empty-list<non-empty-string>) does not accept type array{'Bács-Kiskun 4.', true, false, Bug8146bError\X, null}.",
 			],
diff --git a/tests/PHPStan/Type/Constant/OversizedArrayBuilderTest.php b/tests/PHPStan/Type/Constant/OversizedArrayBuilderTest.php
index 185127d984..52d028df14 100644
--- a/tests/PHPStan/Type/Constant/OversizedArrayBuilderTest.php
+++ b/tests/PHPStan/Type/Constant/OversizedArrayBuilderTest.php
@@ -29,12 +29,12 @@ public static function dataBuild(): iterable
 
 		yield [
 			'[1, 2, 3, ...[1, \'foo\' => 2, 3]]',
-			'non-empty-array<int|(literal-string&lowercase-string&non-falsy-string), int>&oversized-array',
+			'non-empty-array<int|string, int>&oversized-array',
 		];
 
 		yield [
 			'[1, 2, 3, ...[1, \'FOO\' => 2, 3]]',
-			'non-empty-array<int|(literal-string&non-falsy-string&uppercase-string), int>&oversized-array',
+			'non-empty-array<int|string, int>&oversized-array',
 		];
 
 		yield [
@@ -55,11 +55,11 @@ public static function dataBuild(): iterable
 		];
 		yield [
 			'[1, \'foo\' => 2, 3]',
-			'non-empty-array<int|(literal-string&lowercase-string&non-falsy-string), int>&oversized-array',
+			'non-empty-array<int|string, int>&oversized-array',
 		];
 		yield [
 			'[1, \'FOO\' => 2, 3]',
-			'non-empty-array<int|(literal-string&non-falsy-string&uppercase-string), int>&oversized-array',
+			'non-empty-array<int|string, int>&oversized-array',
 		];
 	}