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• Force

Enable-forcing

To allow forced case splits

General Form:
ACL2 !>:enable-forcing    ; allowed forced case splits

See force and see case-split for a discussion of forced case splits, which are turned back on by this command. See disable-forcing for an example showing how to turn off forced case splits.

Enable-forcing is actually a macro that enables the executable-counterpart of the function symbol force; see force. When you want to use hints to turn on forced case splits, use a form such as one of the following (these are equivalent).

:in-theory (enable (:executable-counterpart force))
:in-theory (enable (force))