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CBMC version: 5.79.0
Operating system: Linux x86_64
Exact command line resulting in the issue: cbmc main.c
What behaviour did you expect: Verification failed
What happened instead: invariant violation report, abort, core dumped
An example C file that shows the problem is attached: main.c.txt
The error message is:
Passing problem to propositional reduction
converting SSA
--- begin invariant violation report ---
Invariant check failed
File: arith_tools.cpp:173 function: from_integer
Condition: false
Reason: Precondition
The reason for the crash is that flattening tries to unpack an array where the array size is nil.