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open Domain.Lib
open Lang
open Sl
module DCov_single = Coverage.Dangling.Single
module Sim = Runtime.Sim.Signature
module Dep = Runtime.Testgen_neg.Dep
module F = Format
let derive_vid (vdg : Dep.Graph.t) (vid : vid) : VIdSet.t * int VIdMap.t =
let vids_visited = ref (VIdSet.singleton vid) in
let depths_visited = ref (VIdMap.singleton vid 0) in
let vids_queue = Queue.create () in
Queue.add (vid, 0) vids_queue;
while not (Queue.is_empty vids_queue) do
let vid_current, depth_current = Queue.take vids_queue in
match Dep.Graph.G.find_opt vdg.edges vid_current with
| Some edges ->
Dep.Edges.E.iter
(fun (_, vid_from) () ->
if not (VIdSet.mem vid_from !vids_visited) then (
vids_visited := VIdSet.add vid_from !vids_visited;
depths_visited :=
VIdMap.add vid_from (depth_current + 1) !depths_visited;
Queue.add (vid_from, depth_current + 1) vids_queue))
edges
| None -> ()
done;
(!vids_visited, !depths_visited)
let derive_dangling (iid : iid) (vdg : Dep.Graph.t) (cover : DCov_single.t) :
(vid * int) list =
let vids_related =
let branch = DCov_single.Cover.find iid cover in
match branch.status with Hit -> [] | Miss vids_related -> vids_related
in
let vids_related =
Rand.random_sample Config.samples_related_vid vids_related
in
vids_related
|> List.concat_map (fun vid_related ->
let vids_visited, depths_visited = derive_vid vdg vid_related in
vids_visited
|> VIdSet.filter (fun vid ->
vid |> Dep.Graph.G.find vdg.nodes |> Dep.Node.taint
|> Dep.Node.is_source)
|> VIdSet.elements
|> List.map (fun vid ->
let depth = VIdMap.find vid depths_visited in
(vid, depth)))
|> List.sort (fun (_, depth_a) (_, depth_b) -> Int.compare depth_a depth_b)
let debug_dangling (spec : spec) (relname : string) (includes_p4 : string list)
(filename_p4 : string) (dirname_debug : string) (iid : iid) : unit =
let program_result, cover, vdg =
let spec = Sim.SL spec in
let (module Simulator) = Backend_sim.Build.gen_p4_placeholder () in
Simulator.init spec;
Runner.run_program_with_dangling_and_vdg ~derive:true
(module Simulator)
spec relname includes_p4 filename_p4
in
match program_result with
| Fail _ -> print_endline "failed"
| Pass _ ->
let vids_related =
let branch = DCov_single.Cover.find iid cover in
match branch.status with Hit -> [] | Miss vids_related -> vids_related
in
F.asprintf "Found %d related values" (List.length vids_related)
|> print_endline;
List.iter
(fun vid_related ->
let vids_visited, depths_visited = derive_vid vdg vid_related in
let derivations_source =
vids_visited
|> VIdSet.filter (fun vid ->
vid |> Dep.Graph.G.find vdg.nodes |> Dep.Node.taint
|> Dep.Node.is_source)
|> VIdSet.elements
|> List.map (fun vid ->
let depth = VIdMap.find vid depths_visited in
(vid, depth))
|> List.sort (fun (_, depth_a) (_, depth_b) ->
Int.compare depth_a depth_b)
in
let filename_dot =
F.asprintf "%s/%s_p%d_v%d.dot" dirname_debug
(Util.Filesys.base ~suffix:".p4" filename_p4)
iid vid_related
in
let oc_dot = open_out filename_dot in
Dep.Graph.dot_of_graph vdg |> output_string oc_dot;
close_out oc_dot;
let filename_dot_sub =
F.asprintf "%s/%s_p%d_v%d_sub.dot" dirname_debug
(Util.Filesys.base ~suffix:".p4" filename_p4)
iid vid_related
in
let oc_dot_sub = open_out filename_dot_sub in
"digraph dependencies {\n" |> output_string oc_dot_sub;
VIdSet.iter
(fun vid ->
let node = Dep.Graph.G.find vdg.nodes vid in
let dot = Dep.Node.dot_of_node vid node in
dot ^ "\n" |> output_string oc_dot_sub)
vids_visited;
VIdSet.iter
(fun vid ->
let edges = Dep.Graph.G.find vdg.edges vid in
Dep.Edges.E.iter
(fun (label, vid_to) () ->
let dot = Dep.Edges.dot_of_edge vid label vid_to in
dot ^ "\n" |> output_string oc_dot_sub)
edges)
vids_visited;
"}" |> output_string oc_dot_sub;
close_out oc_dot_sub;
match derivations_source with
| [] ->
F.asprintf "Failed to derive close-AST for iid %d" iid
|> print_endline
| _ ->
F.asprintf "Found close-AST for iid %d" iid |> print_endline;
let filename_value =
F.asprintf "%s/%s_p%d_v%d.value" dirname_debug
(Util.Filesys.base ~suffix:".p4" filename_p4)
iid vid_related
in
let oc_value = open_out filename_value in
let derivations_source =
derivations_source
|> List.map (fun (vid_source, depth) ->
let value_source =
Dep.Graph.reassemble_graph vdg VIdMap.empty vid_source
in
(vid_source, value_source, depth))
in
List.iter
(fun (vid_source, value_source, depth) ->
F.asprintf "/* depth: %d, vid: %d */ %s\n" depth vid_source
(Sl.Print.string_of_value value_source)
|> output_string oc_value)
derivations_source)
vids_related