Eval Console

For this tutorial, load for example the file StackConstructive.mch included in the examples/Tutorial directory of the ProB distribution.

After loading the file, double click on the green line "SETUP_CONSTANTS" in the "Enabled Operations" pane. Now double click on the green "INITIALISATION" line in the same pane. To start the "Eval..." interactive console you can either double-click any line in the "State Properties" pane or right-click (Control-Click on a Mac) on the "State Properties" pane and select the "Eval..." entry as shown below:

This will bring up a new window, the "Eval Console":

You can now enter predicates or expressions and hit return or enter to evaluate them in the current state of the machine. Below is a small transcript:

You can use the up and down arrow keys to navigate to earlier predicates or expressions you have entered.