Negation of 'The payment will be made if and only if the work is finished in time'

The same question, asked 2 times: 10 May 2023 S1, 9 May 2024 S2. Every wording below, oldest first.

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Question 1
10 May 2023 S1
102 $Negation of the statement "The payment will be made if and only if the work is finished in time." is$
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Question 2
9 May 2024 S2
111 $Negation of the statement: 'The payment will be made if and only if the work is finished in time.' is$
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