(header ((h) ihello provides) ((sut) illegal_silent_external component) ((w) ihello requires))
<external>.h.hello -> ...
... -> sut.h.hello
sut.w.hello -> ...
... -> <external>.w.hello
... <- <external>.w.return
sut.w.return <- ...
... <- sut.h.return
<external>.h.return <- ...
(trail "h.hello" "w.hello" "w.return" "h.return")
<external>.h.cancel -> ...
... -> sut.h.cancel
sut.w.cancel -> ...
... -> <external>.w.cancel
... <- <external>.w.return
sut.w.return <- ...
... <- sut.h.return
<external>.h.return <- ...
(trail "h.cancel" "w.cancel" "w.return" "h.return")
test/all/illegal_silent_external/illegal_silent_external.dzn:51:3: error: illegal
... <- sut.<q>
sut.w.world <- ...
<illegal>
test/all/illegal_silent_external/illegal_silent_external.dzn:51:3: error: illegal
(trail "w.world" "<illegal>")
(labels "h.hello" "h.cancel" "w.world")
(eligible)
