fix getNextThread func

diff --git a/model.cc b/model.cc
index 170edc748b8e9fc72c815d73a4ef1c098713587c..ac394d9a49ec9f164051c04328fe35af04e22d85 100644 (file)
--- a/model.cc
+++ b/model.cc
@@ -366,13 +366,14 @@ void ModelChecker::continueExecution(Thread *old)
 
 Thread* ModelChecker::getNextThread()
 {
-       Thread *thr = nullptr;
+       Thread *nextThread = nullptr;
        for (unsigned int i = curr_thread_num; i < get_num_threads(); i++) {
                thread_id_t tid = int_to_id(i);
-               thr = get_thread(tid);
+               Thread *thr = get_thread(tid);
                
                if (!thr->is_complete() && !thr->get_pending()) {
                        curr_thread_num = i;
+                       nextThread = thr;
                        break;
                }
                ModelAction *act = thr->get_pending();
@@ -383,7 +384,7 @@ Thread* ModelChecker::getNextThread()
 
                chooseThread(act, thr);
        }
-       return thr;
+       return nextThread;
 }
 
 void ModelChecker::finishExecution(Thread *old) 
@@ -537,7 +538,12 @@ void ModelChecker::run()
                curr_thread_num = 1;
                thread_id_t tid = int_to_id(1);
                Thread *thr = get_thread(tid);
-               switch_from_master(thr);
+               if (!thr->get_pending())
+                       switch_from_master(thr);
+               else {
+                       consumeAction();
+                       switch_from_master(thr);
+               }
                finish_execution((exec+1) < params.maxexecutions);
                //restore random number generator state after rollback
                setstate(random_state);