NoQ added a comment. How about we track the condition value past its collapse point only if it involves an overwrite of a variable (or other region) from which the value is loaded? Like, if there are no overwrites, stop at the collapse point. If there are overwrites, stop at the oldest overwrite point (i.e., the value was loaded from 'x' which was previously overwritten by the value of value 'y' which was previously overwritten by the initial value of variable 'z' => stop at the overwrite point of 'y').
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