If I may elaborate a little more, what Pastreur and others showed is that known, existing life does not spontaneously form from inanimate matter. You need flies to make more flies, and mice to make more mice.
Crashfrog's other point is well made - abiogenesis has not been ruled out - just that one needs special conditions that do not exist in rotting meat. Also, the life that would arise, should the "experiment" be run again, would not be any of the species that we know.