diff --git a/spec/model_check/Model_1n/MC.cfg b/spec/model_check/Model_1n/MC.cfg
new file mode 100644
index 0000000..edb069d
--- /dev/null
+++ b/spec/model_check/Model_1n/MC.cfg
@@ -0,0 +1,74 @@
+\* MV CONSTANT declarations
+CONSTANTS
+A_v1 = A_v1
+\* MV CONSTANT declarations
+CONSTANTS
+A_n1 = A_n1
+\* CONSTANT declarations
+CONSTANT NULL = NULL
+\* MV CONSTANT definitions
+
+CONSTANT
+    VALUE <- const_1718865728589375000
+\* MV CONSTANT definitions
+
+CONSTANT
+    NODE_ID <- const_1718865728589376000
+\* CONSTANT definitions
+
+CONSTANT
+    RESTART <- const_1718865728589377000
+\* CONSTANT definitions
+
+CONSTANT
+    MAX_TERM <- const_1718865728589378000
+\* CONSTANT definitions
+
+CONSTANT
+    DB_INIT_STATE_PATH <- const_1718865728589379000
+\* CONSTANT definitions
+
+CONSTANT
+    ENABLE_ACTION <- const_1718865728589380000
+\* CONSTANT definitions
+
+CONSTANT
+    APPEND_ENTRIES_MAX <- const_1718865728589381000
+\* CONSTANT definitions
+
+CONSTANT
+    CHECK_SAFETY <- const_1718865728589382000
+\* CONSTANT definitions
+
+CONSTANT
+    DB_SAVE_STATE_PATH <- const_1718865728589383000
+\* CONSTANT definitions
+
+CONSTANT
+    RECONFIG <- const_1718865728589384000
+\* CONSTANT definitions
+
+CONSTANT
+    REPLICATE <- const_1718865728589385000
+\* CONSTANT definitions
+
+CONSTANT
+    DB_ACTION_PATH <- const_1718865728589386000
+\* CONSTANT definitions
+
+CONSTANT
+    VOTE <- const_1718865728589387000
+\* CONSTANT definitions
+
+CONSTANT
+    CLIENT_REQUEST <- const_1718865728589388000
+\* VIEW definition
+VIEW
+view_1718865728589389000
+\* SPECIFICATION definition
+SPECIFICATION
+Spec
+\* INVARIANT definition
+INVARIANT
+SaveActions
+\* Generated on Thu Jun 20 14:42:08 CST 2024
\ No newline at end of file
diff --git a/spec/model_check/Model_1n/MC.tla b/spec/model_check/Model_1n/MC.tla
new file mode 100644
index 0000000..310d4f7
--- /dev/null
+++ b/spec/model_check/Model_1n/MC.tla
@@ -0,0 +1,91 @@
+---- MODULE MC ----
+EXTENDS raft, TLC
+
+\* MV CONSTANT declarations@modelParameterConstants
+CONSTANTS
+A_v1
+----
+
+\* MV CONSTANT declarations@modelParameterConstants
+CONSTANTS
+A_n1
+----
+
+\* MV CONSTANT definitions VALUE
+const_1718865728589375000 == 
+{A_v1}
+----
+
+\* MV CONSTANT definitions NODE_ID
+const_1718865728589376000 == 
+{A_n1}
+----
+
+\* CONSTANT definitions @modelParameterConstants:0RESTART
+const_1718865728589377000 == 
+3
+----
+
+\* CONSTANT definitions @modelParameterConstants:1MAX_TERM
+const_1718865728589378000 == 
+3
+----
+
+\* CONSTANT definitions @modelParameterConstants:2DB_INIT_STATE_PATH
+const_1718865728589379000 == 
+""
+----
+
+\* CONSTANT definitions @modelParameterConstants:4ENABLE_ACTION
+const_1718865728589380000 == 
+TRUE
+----
+
+\* CONSTANT definitions @modelParameterConstants:5APPEND_ENTRIES_MAX
+const_1718865728589381000 == 
+3
+----
+
+\* CONSTANT definitions @modelParameterConstants:6CHECK_SAFETY
+const_1718865728589382000 == 
+FALSE
+----
+
+\* CONSTANT definitions @modelParameterConstants:8DB_SAVE_STATE_PATH
+const_1718865728589383000 == 
+""
+----
+
+\* CONSTANT definitions @modelParameterConstants:9RECONFIG
+const_1718865728589384000 == 
+3
+----
+
+\* CONSTANT definitions @modelParameterConstants:11REPLICATE
+const_1718865728589385000 == 
+3
+----
+
+\* CONSTANT definitions @modelParameterConstants:12DB_ACTION_PATH
+const_1718865728589386000 == 
+"/root/workspace/scupt-raft/spec/model_check/Model_1n/action.db"
+----
+
+\* CONSTANT definitions @modelParameterConstants:13VOTE
+const_1718865728589387000 == 
+2
+----
+
+\* CONSTANT definitions @modelParameterConstants:14CLIENT_REQUEST
+const_1718865728589388000 == 
+2
+----
+
+\* VIEW definition @modelParameterView
+view_1718865728589389000 == 
+vars_view
+----
+
+=============================================================================
+\* Modification History
+\* Created Thu Jun 20 14:42:08 CST 2024 by ybbh
diff --git a/spec/raft.tla b/spec/raft.tla
index 7e460f1..78fc9c7 100644
--- a/spec/raft.tla
+++ b/spec/raft.tla
@@ -1241,7 +1241,7 @@ ClientRequest(nid, v , _node_id_set, _check_safety, _enable_action) ==
             actions1 == ActionCheckState(nid)
             actions2 == Action(ActionInput, Message(nid, nid, __ActionClientRequest, v))
         IN SetAction(__action__, actions0, actions1 \o actions2, _enable_action)
-    /\ IF NODE_ID = {nid} THEN
+    /\ IF v_conf_committed[nid].nid_vote \cup v_conf_new[nid].nid_vote = {nid} THEN
           _HandleAdvanceCommitIndex(v_follower_match_index, v_log', v_snapshot,
                  v_conf_committed, v_conf_new,
                  nid, _node_id_set, _check_safety)