SMT conversion does not allow 0-sized arrays

so this test cannot be verified using smt-solver until smt conversion is
fixed/extended.

Author: petr-bauch

regression/cbmc/Pointer_byte_extract5/no-simplify.desc

@@ -1,4 +1,4 @@
-CORE
+CORE broken-smt-backend
 main.i
 --bounds-check --32 --no-simplify
 ^EXIT=10$