The directory includes source code for the CPP12 submission. 1) cfg.v Basic definitions and properties of control-flow-graphs: vertices, arcs, successors, reachability and dominance. 2) reach.v Metatheory of reachablity. 3) dom_decl.v Metatheory of dominance. 4) dom_type.v The specification of dominance algorithm. 5) dom_set.v The Correctness of the AC algorithm. 6) dom_libs.v Definitions and properties used by the CHK algorithm. 7) dfs.v Depth-first-search. 7) push_iter.v The low-level design and metatheory of CHK algorithm. 8) dom_list.v The Correctness of the CHK algorithm. 9) dom_tree.v Basic definitions and properties of dominator trees constructions. 10) dom_list_tree.v The correctness of CHK-tree algorithm. 11) dom_set_tree.v The implementation of AC-tree algorithm. Note: we did not prove the correct of AC-tree fully. We implemented the algorithm to compare its performance with CHK-tree. Misc: 1) pull_iter.v This is an implementation of Kildall that, at each iteration, pulls information from the predeccessors of a node to the node. The Kildall algorithm we use push information from a node to its successors at each iteration. We implemented pull_iter.v to evaluate some design trade-offs of Kildall, do not present pull_iter.v in our paper submission. 2) cpdt_tactics.v Tactics copied from Adam Chlipala's book.