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namespace;
include rt;
// a loop proof only holds while the body leaves the index alone: here the body
// moves i back below 0 once, so t[i] keeps its check and the access faults
int main() {
int[4] t; int s = 0, once = 1;
for (int i = 0; i < 4; i++) { s = s + t[i]; if (once) { once = 0; i = -3000; } }
rt.put_n(s); rt.put_c(10);
return 0;
}
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