Enabling --catch-trap makes sure tracing aborts with an error message in case a CPU exception/trap is observed in the fault-free golden run. In most cases, this is an indication the analyzed program is broken in the first place, which should be detected early in the FI process. This is a refurbished version of a commit by Marcel Johannfunke. Change-Id: I50cc8e12e0986d3623a1be78259cfad13dc56205