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For this reason there is the "--backsearch" option, which forces alogParse to look at only variable posting in the past when filling a line. You can even specify "--backsearch=0.5", which will allow alogParse to look up to 0.5 seconds in the future for closer variable postings. Backsearch, especially pure backsearch, can be much faster than the default mode. Regardless of the mode, alogParse always outputs and "age" along with every variable to tell you how far away that variable value was picked from. A negative age would indicate that variable came from the future.
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