User Manual of the RODIN Platform

• load the next non-discharged proof obligation,
• (i) show information corresponding to the current proof obligation in the corresponding window.
This information correspond to the elements that took directly part in the proof obligation generation
(events, invariant, etc.),
• goto the next pending node of the current proof tree,
• load the next reviewed node of the current proof tree.
6.5 The Smiley
The smiley can take three different colors: (1) red, meaning that the proof tree contains one or more
non-discharged sequents, (2) blue, meaning that all non-discharged sequents of the proof tree have been
reviewed, (3) green, meaning that all sequents of the proof tree are discharged.
6.6 The Operator ”Buttons”
In the goal and in the selected, searched, or cache hypotheses some operators are colored in red. It means
that they are ”buttons” you can press. When doing so, the meaning (sometimes several) is shown in a
menu where you can select various options. The operation performed by these options is described in
sections 6.9.1 and 6.9.2.
6.7 The Search Hypotheses Window
A window is provided which contains the hypotheses having a character string in common with the one
in the editing area. For example, if we search for hypotheses involving the character string ”cr”, then after
pressing the ”search hypothesis” button in the proof control window, we obtain the following:
Such hypotheses can be moved to the ”Selected Hypotheses” window (button (+)) or removed from the
”Search Hypotheses” window (button (-)). As for the selected hypotheses, other buttons situated next to
the previous ones, allow you to move or remove all hypotheses. By pressing the (ct) button the negation
of the corresponding hypothesis becomes the new goal.
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