add a testcase for path merging
add a testcase for path merging

angr/angr,f-prettyland/angr,iamahuman/angr,chubbymaggie/angr,chubbymaggie/angr,schieb/angr,schieb/angr,chubbymaggie/angr,angr/angr,tyb0807/angr,f-prettyland/angr,f-prettyland/angr,schieb/angr,angr/angr,tyb0807/angr,axt/angr,iamahuman/angr,tyb0807/angr,axt/angr,axt/angr,iamahuman/angr