X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/bc2253e2c879ee28ae5153f1d56497ab802aeea9..3f9b311ec56db95ec539001a860ae3c838c48312:/src/mc/explo/DFSExplorer.cpp

diff --git a/src/mc/explo/DFSExplorer.cpp b/src/mc/explo/DFSExplorer.cpp
index ee49e31d9b..b328d15773 100644
--- a/src/mc/explo/DFSExplorer.cpp
+++ b/src/mc/explo/DFSExplorer.cpp
@@ -8,8 +8,10 @@
 #include "src/mc/mc_exit.hpp"
 #include "src/mc/mc_private.hpp"
 #include "src/mc/mc_record.hpp"
+#include "src/mc/remote/mc_protocol.h"
 #include "src/mc/transition/Transition.hpp"
 
+#include "xbt/asserts.h"
 #include "xbt/log.h"
 #include "xbt/string.hpp"
 #include "xbt/sysdep.h"
@@ -136,29 +138,21 @@ void DFSExplorer::run()
     const aid_t next = reduction_mode_ == ReductionMode::odpor ? state->next_odpor_transition()
                                                                : std::get<0>(state->next_transition_guided());
 
-    if (next < 0) {
-      // If there is no more transition in the current state ), backtrace
-      XBT_VERB("%lu actors remain, but none of them need to be interleaved (depth %zu).", state->get_actor_count(),
-               stack_.size() + 1);
-
-      if (state->get_actor_count() == 0) {
-        get_remote_app().finalize_app();
-        XBT_VERB("Execution came to an end at %s (state: %ld, depth: %zu)", get_record_trace().to_string().c_str(),
-                 state->get_num(), stack_.size());
+    if (next < 0 || not state->is_actor_enabled(next)) {
+      if (next >= 0) { // Actor is not enabled, then
+        XBT_DEBUG(
+            "Reduction %s wants to execute a disabled transition %s. If it's ODPOR, ReversibleRace is suboptimal.",
+            to_c_str(reduction_mode_), state->get_actors_list().at(next).get_transition()->to_string(true).c_str());
+        if (reduction_mode_ == ReductionMode::odpor) {
+          // Remove the disabled transition from the wakeup tree so that ODPOR doesn't try it again
+          state->remove_subtree_at_aid(next);
+          state->add_sleep_set(state->get_actors_list().at(next).get_transition());
+        } else {
+          xbt_assert(false, "Only ODPOR should be confident enought in itself to try executing a disabled transition");
+        }
       }
-
-      this->backtrack();
-      continue;
-    }
-    if (not state->is_actor_enabled(next)) {
-      // if ODPOR picked an actor that is not enabled -- ReversibleRace is an overapproximation
-      xbt_assert(reduction_mode_ == ReductionMode::odpor,
-                 "Only ODPOR should be fool enough to try to execute a disabled transition");
-      XBT_VERB("Preventing ODPOR exploration from executing a disabled transition. The reversibility of the race "
-               "must have been overapproximated");
-
-      state->remove_subtree_at_aid(next);
-      state->add_sleep_set(state->get_actors_list().at(next).get_transition());
+      // If there is no more transition in the current state (or if ODPOR picked an actor that is not enabled --
+      // ReversibleRace is an overapproximation), backtrace
       XBT_VERB("%lu actors remain, but none of them need to be interleaved (depth %zu).", state->get_actor_count(),
                stack_.size() + 1);
 
@@ -356,6 +350,9 @@ std::shared_ptr<State> DFSExplorer::next_odpor_state()
     XBT_DEBUG("\tPerformed ODPOR 'clean-up'. Sleep set has:");
     for (const auto& [aid, transition] : state->get_sleep_set())
       XBT_DEBUG("\t  <%ld,%s>", aid, transition->to_string().c_str());
+    if (not state->has_empty_tree()) {
+      return state;
+    }
   }
   return nullptr;
 }
@@ -436,7 +433,7 @@ void DFSExplorer::backtrack()
 
   // Search how to restore the backtracking point
   std::deque<Transition*> replay_recipe;
-  for (auto* s = backtracking_point.get(); s != nullptr; s = s->get_parent_state().get()) {
+  for (const auto* s = backtracking_point.get(); s != nullptr; s = s->get_parent_state().get()) {
     if (s->get_transition_in() != nullptr) // The root has no transition_in
       replay_recipe.push_front(s->get_transition_in().get());
   }