P499: Enumeration of all minimal path-conjunctions of a directed graph.

P499: Enumeration of all minimal path-conjunctions of a directed graph.
Input:
A directed graph $G = (V, E)$ and a family of pairs $\mathcal{P} = \{(s_1, t_1)\} \cup \{(s_2, t) \mid t \in T\}$, where $T \subseteq V$.
Output:
All minimal path-conjunctions of $G$.
Complexity:
Polynomial delay.
Comment:
A minimal path-conjunction is a minimal set of edges $E'$ such that any pair of vertices in $\mathcal{P}$ is connected in $(V, E')$.
Reference:
[Khachiyan2007] (Bibtex)