[Soot-list] Finding Flows between same sinks and same sourcs / Conneting the flows using FlowDroid

[H S]

Hi:
I am using FlowDroid to get the different paths between the same sources and the same sinks
(like source1--flow1-->sink1, and source1--flow2-->sink1),
which in one flow you may have an user interaction( for example by popping up an alert dialog on the device screen) and in the other flow you do not have any user interaction. 
 
To catch these flows I simply added the signature of alert.dialog.show() to the default list of sources and sinks of FlowDroid. 

Now my question is how can I understand that the sink of some flow is the source of the other flow.

Meaning e.g.: if I set alertdialog1 as a sink, and also as a source, I will get two flows. 
Like: (1)source1--flow1-->alertdialog1, (2)alertdialog1--flow2-->sink1.

And I have also this possible flow: source1--flow3-->sink1. 

So now how can I connect (1) and (2)? And say that between source1 and sink1 we have two flows:
(flow1+flow2) and flow3. Based on which tags of the xml file of flowDroid one can get the required information to connect these two flows?

From the output xml file of flowDroid, by XML parser,until now I simply extracted the <signature> for each <ethodEntry> of each <path>.

Here is the sample result file which is resulted by parsing the output xml file of flowDroid:
"Number of of MethodEntries in Path.No   3  is   6:
Signature of Method Entry No.  1   is <android.widget.EditText: android.text.Editable getText()>
Signature of Method Entry No.  2   is <java.lang.Object: java.lang.String toString()>
Signature of Method Entry No.  3   is <java.lang.Integer: int parseInt(java.lang.String)>
Signature of Method Entry No.  4   is <java.lang.Integer: java.lang.Integer valueOf(int)>
Signature of Method Entry No.  5   is <com.example.myapplication4.app.MainActivity$1: void <init>(com.example.myapplication4.app.MainActivity)>
Signature of Method Entry No.  6   is <com.example.myapplication4.app.MainActivity: void onCreate(android.os.Bundle)>

Number of of MethodEntries in Path.No   4  is   7:
Signature of Method Entry No.  1   is <android.widget.EditText: android.text.Editable getText()>
Signature of Method Entry No.  2   is <java.lang.Object: java.lang.String toString()>
Signature of Method Entry No.  3   is <java.lang.Integer: int parseInt(java.lang.String)>
Signature of Method Entry No.  4   is <java.lang.Integer: java.lang.Integer valueOf(int)>
Signature of Method Entry No.  5   is <java.lang.Integer: int intValue()>
Signature of Method Entry No.  6   is <com.example.myapplication4.app.MainActivity: void openAlert(android.view.View)>
Signature of Method Entry No.  7   is <android.app.AlertDialog$Builder: android.app.AlertDialog show()>

Number of total Signatures:26
User interactions occurs  1 times.

In these paths there exist User Interaction, No.   4"  
 

Looking forward for your answer,
Sarah
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