diminishedReturns won't stop

[juntinghe1973]

i config the localSearch use diminishedReturns and simulatedAnnealing , like this:

<localSearch>
	<termination>
		<terminationCompositionStyle>OR</terminationCompositionStyle>
		<diminishedReturns>
			<slidingWindowSeconds>20</slidingWindowSeconds>
			<minimumImprovementRatio>0.2</minimumImprovementRatio>
		</diminishedReturns>
		<minutesSpentLimit>7</minutesSpentLimit>
	</termination>
	<unionMoveSelector>
……
	</unionMoveSelector>
	<acceptor>
		<simulatedAnnealingStartingTemperature>[0]hard/[33000/100/100/100]soft</simulatedAnnealingStartingTemperature>
	</acceptor>
	<forager>
		<acceptedCountLimit>4</acceptedCountLimit>
	</forager> 
</localSearch>

but it won't stop until 7 mins later. logging like this:

2025-03-07 09:13:40.000 [l-2-thread-1] DEBUG     LS step (3974), time spent (48452), score ([-10]hard/[-526512/-914/0/0]soft),     best score ([-10]hard/[-518439/-930/0/0]soft), accepted/selected move count (4/21), picked move (sameSewingLineSameGoSameColorQuantitySortSingle |1| {SW10[18..19] -> SW10[17]}).
2025-03-07 09:13:40.011 [l-2-thread-1] DEBUG     LS step (3975), time spent (48463), score ([-10]hard/[-526387/-914/0/0]soft),     best score ([-10]hard/[-518439/-930/0/0]soft), accepted/selected move count (4/13), picked move (sameSewingLineSameGoSameColorQuantitySortSingle |1| {SW10[19..20] -> SW10[18]}).
2025-03-07 09:13:40.026 [l-2-thread-1] DEBUG     LS step (3976), time spent (48478), score ([-10]hard/[-526386/-914/0/0]soft),     best score ([-10]hard/[-518439/-930/0/0]soft), accepted/selected move count (4/7), picked move (sameSewingLineGoTimeSortByGroup |1| {SW08[25..26] -> SW08[24]}).
2025-03-07 09:13:40.048 [l-2-thread-1] DEBUG     LS step (3977), time spent (48500), score ([-10]hard/[-526392/-914/0/0]soft),     best score ([-10]hard/[-518439/-930/0/0]soft), accepted/selected move count (4/27), picked move (sameSewingLineGoColorSort |1| {SW05[65..66] -> SW05[66]}).
2025-03-07 09:13:40.056 [l-2-thread-1] DEBUG     LS step (3978), time spent (48508), score ([-10]hard/[-526392/-923/0/0]soft),     best score ([-10]hard/[-518439/-930/0/0]soft), accepted/selected move count (4/12), picked move (sameGOsameTimeRandomMove |3| {SW05[64..67] -> SW05[61]}).
2025-03-07 09:13:40.061 [l-2-thread-1] DEBUG     LS step (3979), time spent (48513), score ([-10]hard/[-526386/-923/0/0]soft),     best score ([-10]hard/[-518439/-930/0/0]soft), accepted/selected move count (4/8), picked move (sameSewingLineSameGoColorTimeSort |1| {SW05[63..64] -> SW05[62]}).

……

2025-03-07 09:14:02.328 [l-2-thread-1] DEBUG     LS step (7066), time spent (70780), score ([-10]hard/[-532040/-919/0/0]soft),     best score ([-10]hard/[-518439/-930/0/0]soft), accepted/selected move count (4/13), picked move (sameSewingLineSameGoSameColorQuantitySortSingle |1| {SW10[18..19] -> SW10[17]}).
2025-03-07 09:14:02.337 [l-2-thread-1] DEBUG     LS step (7067), time spent (70789), score ([-10]hard/[-533025/-919/0/0]soft),     best score ([-10]hard/[-518439/-930/0/0]soft), accepted/selected move count (4/16), picked move (sameSewingLineSameGoTimeSortByGroup |4| {SW10[22..26] -> SW10[15]}).
2025-03-07 09:14:02.343 [l-2-thread-1] DEBUG     LS step (7068), time spent (70795), score ([-10]hard/[-533020/-919/0/0]soft),     best score ([-10]hard/[-518439/-930/0/0]soft), accepted/selected move count (4/8), picked move (sameSewingLineSameGoSameColorQuantitySortSingle |1| {SW10[19..20] -> SW10[15]}).
2025-03-07 09:14:02.347 [l-2-thread-1] DEBUG     LS step (7069), time spent (70799), score ([-10]hard/[-533005/-919/0/0]soft),     best score ([-10]hard/[-518439/-930/0/0]soft), accepted/selected move count (4/9), picked move (sameSewingLineSameGoSameColorQuantitySortSingle |1| {SW10[20..21] -> SW10[16]}).
2025-03-07 09:14:02.354 [l-2-thread-1] DEBUG     LS step (7070), time spent (70806), score ([-10]hard/[-533011/-919/0/0]soft),     best score ([-10]hard/[-518439/-930/0/0]soft), accepted/selected move count (4/7), picked move (sameSewingLineGoColorSort |1| {SW05[64..65] -> SW05[65]}).
2025-03-07 09:14:02.358 [l-2-thread-1] DEBUG     LS step (7071), time spent (70810), score ([-10]hard/[-533006/-919/0/0]soft),     best score ([-10]hard/[-518439/-930/0/0]soft), accepted/selected move count (4/7), picked move (sameSewingLineSameGoSameColorQuantitySortSingle |1| {SW10[23..24] -> SW10[22]}).
2025-03-07 09:14:02.363 [l-2-thread-1] DEBUG     LS step (7072), time spent (70815), score ([-10]hard/[-532991/-919/0/0]soft),     best score ([-10]hard/[-518439/-930/0/0]soft), accepted/selected move count (4/13), picked move (sameSewingLineSameGoSameColorQuantitySortSingle |1| {SW10[24..25] -> SW10[23]}).

time is from 09:13:40.000 to 09:14:02.363, above 20s but best score is not change. it should terminate but it dosen't.