Bug report

Upgrading to 1.7.3 and re-running analyze threw an Internal Error at code that was using array_pop in a loop.

The error only happens when there are more than 1 non-literal string item in the popped array.

I'm guessing it was caused by phpstan/phpstan-src#1352.

Code snippet that reproduces the problem

https://phpstan.org/r/8d3f63e7-9e1b-4935-a6be-73bc3908dc7f

Expected output

No Error.

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