Generic coexistence of null and spacelike singularities in gravitational collapse

Let a black hole form from generic gravitational collapse, and denote its terminal boundary's Cauchy horizon by $\mathcal{CH}_{i^+}$ and its spacelike singularity by $\mathcal{S}$. Generic terminal-boundary conjecture. The black hole terminal boundary consists of a weak null singularity, the Cauchy horizon $\mathcal{CH}_{i^+}$, and a spacelike singularity $\mathcal{S}$. This conjecture proposes that both null and spacelike singularities are generic features of gravitational collapse, beyond the explicitly constructed spherically symmetric examples.