Hmmm, one problem I see with this, at least for us open source mortals, is that all this rigor sits atop a festering pile of C, that is, the GCC (the GNAT Ada compiler in it)....<p>At least as these people are using SPARK/Ada.<p>Then again, maybe I should return to looking at Intel CPU and chipset errata....<p>On the third hand, these guys aren't using systems with ECC.... (<a href="http://ark.intel.com/products/64893/intel-core-i7-3520m-processor-4m-cache-up-to-3_60-ghz" rel="nofollow">http://ark.intel.com/products/64893/intel-core-i7-3520m-proc...</a>).