--- a/src/parallel_execution/rb_tree.c	Wed Nov 09 10:13:31 2016 +0900
+++ b/src/parallel_execution/rb_tree.c	Wed Nov 09 13:26:53 2016 +0900
@@ -140,8 +140,7 @@
 }
 
 __code insert2_stub(struct Context* context) {
-    struct SingleLinkedStack *nodeStack = (struct SingleLinkedStack*)context->data[Traverse]->traverse.nodeStack->stack;
-    goto insertCase2(context, &context->data[Traverse]->traverse, &context->data[Stack]->stack, &nodeStack->top->data->node);
+    goto insertCase2(context, &context->data[Traverse]->traverse, &context->data[Stack]->stack, &context->data[Stack]->stack.data->node); 
 }
 
 __code insertCase3(struct Context* context, struct Traverse* traverse, struct Stack* nodeStack, struct Node* parent, struct Node* grandparent) {
@@ -170,8 +169,8 @@
 __code insert3_stub(struct Context* context) {
     goto insertCase3(context, &context->data[Traverse]->traverse,
                      &context->data[Stack]->stack,
-                     &context->data[Traverse]->traverse.nodeStack->data->node,
-                     &context->data[Traverse]->traverse.nodeStack->data1->node
+                     &context->data[Stack]->stack.data->node,
+                     &context->data[Stack]->stack.data1->node
         );
 }
 
@@ -199,19 +198,18 @@
 
 __code insert4_stub(struct Context* context) {
     goto insertCase4(context, &context->data[Traverse]->traverse, context->data[Traverse]->traverse.current,
-                    &context->data[Traverse]->traverse.nodeStack->data->node,
-                    &context->data[Traverse]->traverse.nodeStack->data1->node);
+                    &context->data[Stack]->stack.data->node,
+                    &context->data[Stack]->stack.data1->node);
 }
 
-__code insertCase5(struct Context* context, struct Traverse* traverse) {
-    struct Stack* nodeStack = traverse->nodeStack;
+__code insertCase5(struct Context* context, struct Traverse* traverse,struct Stack *nodeStack) {
     nodeStack->stack = (union Data*)traverse->nodeStack;
     nodeStack->next = InsertCase51;
-    goto meta(context, nodeStack->get2);
+    goto meta(context, traverse->nodeStack->get2);
 }
 
 __code insert5_stub(struct Context* context) {
-    goto insertCase5(context, &context->data[Traverse]->traverse);
+    goto insertCase5(context, &context->data[Traverse]->traverse, &context->data[Stack]->stack);
 }
 
 __code insertCase51(struct Context* context, struct Traverse* traverse, struct Node* current, struct Node* parent, struct Node* grandparent) {
@@ -227,22 +225,20 @@
 }
 
 __code insert51_stub(struct Context* context) {
-    struct Traverse* traverse = &context->data[Traverse]->traverse;
-    struct Node* parent = &traverse->nodeStack->data->node;
-    struct Node* grandparent = &traverse->nodeStack->data1->node;
+    struct Node* parent = &context->data[Stack]->stack.data->node;
+    struct Node* grandparent = &context->data[Stack]->stack.data1->node;
     goto insertCase51(context, &context->data[Traverse]->traverse, context->data[Traverse]->traverse.current, parent, grandparent);
 }
 
 // put rotateLeft's continuation as argument
-__code rotateLeft(struct Context* context, struct Traverse* traverse) {
-    struct Stack* nodeStack = traverse->nodeStack;
+__code rotateLeft(struct Context* context, struct Traverse* traverse,struct Stack* nodeStack) {
     nodeStack->stack = (union Data*)traverse->nodeStack;
     nodeStack->next = RotateL1;
-    goto meta(context, nodeStack->get);
+    goto meta(context, traverse->nodeStack->get);
 }
 
 __code rotateLeft_stub(struct Context* context) {
-    goto rotateLeft(context, &context->data[Traverse]->traverse);
+    goto rotateLeft(context, &context->data[Traverse]->traverse, &context->data[Stack]->stack);
 }
 
 __code rotateLeft1(struct Context* context, struct Node* node, struct Tree* tree, struct Traverse* traverse, struct Node* parent) {
@@ -265,8 +261,7 @@
 }
     
 __code rotateLeft1_stub(struct Context* context) {
-    struct Traverse* traverse = &context->data[Traverse]->traverse;
-    struct Node* parent = &traverse->nodeStack->data->node;
+    struct Node* parent = &context->data[Stack]->stack.data->node;
     goto rotateLeft1(context,
                     context->data[Traverse]->traverse.current,
                     &context->data[Tree]->tree,
@@ -274,14 +269,14 @@
                     parent);
 }
 
-__code rotateRight(struct Context* context, struct Traverse* traverse) {
-    struct Stack* nodeStack = traverse->nodeStack;
+__code rotateRight(struct Context* context, struct Traverse* traverse,struct Stack *nodeStack) {
+    nodeStack->stack = (union Data*)traverse->nodeStack;
     nodeStack->next = RotateR1;
-    goto meta(context, nodeStack->get);
+    goto meta(context, traverse->nodeStack->get);
 }
 
 __code rotateRight_stub(struct Context* context) {
-    goto rotateRight(context, &context->data[Traverse]->traverse);
+    goto rotateLeft(context, &context->data[Traverse]->traverse, &context->data[Stack]->stack);
 }
 
 __code rotateRight1(struct Context* context, struct Node* node, struct Tree* tree, struct Traverse* traverse, struct Node* parent) {
@@ -304,8 +299,7 @@
 }
 
 __code rotateRight1_stub(struct Context* context) {
-    struct Traverse* traverse = &context->data[Traverse]->traverse;
-    struct Node* parent = &traverse->nodeStack->data->node;
+    struct Node* parent = &context->data[Stack]->stack.data->node;
     goto rotateRight1(context,
                      context->data[Traverse]->traverse.current,
                      &context->data[Tree]->tree,