• Top
    • Documentation
    • Books
    • Boolean-reasoning
    • Projects
    • Debugging
    • Std
    • Proof-automation
    • Macro-libraries
    • ACL2
      • Theories
      • Rule-classes
      • Proof-builder
      • Recursion-and-induction
      • Hons-and-memoization
      • Events
        • Defun
          • Xargs
            • Guard
              • Verify-guards
              • Mbe
              • Set-guard-checking
              • Ec-call
              • Print-gv
              • The
              • Guards-and-evaluation
              • Guard-debug
              • Set-check-invariant-risk
              • Guard-evaluation-table
              • Guard-evaluation-examples-log
              • Guard-example
              • Defthmg
              • Invariant-risk
              • With-guard-checking
              • Guard-miscellany
              • Guard-holders
              • Guard-formula-utilities
                • Guard-simplification
                • Guard-obligation
                • Gthm
                • Verify-guards-formula
                • Guard-theorem-example
                • Guard-theorem
                  • ACL2-pc::prove-guard
                  • Guard-theorem-example
                • Verify-guard-implication
              • Set-verify-guards-eagerness
              • Guard-quick-reference
              • Set-register-invariant-risk
              • Guards-for-specification
              • Guard-evaluation-examples-script
              • Guard-introduction
              • Program-only
              • Non-exec
              • Set-guard-msg
              • Safe-mode
              • Set-print-gv-defaults
              • Guard-theorem-example
              • With-guard-checking-event
              • With-guard-checking-error-triple
              • Guard-checking-inhibited
              • Extra-info
            • Otf-flg
            • Normalize
          • Mutual-recursion
          • Defun-mode
          • Rulers
          • Defun-inline
          • Defun-nx
          • Defund
          • Set-ignore-ok
          • Set-well-founded-relation
          • Set-measure-function
          • Set-irrelevant-formals-ok
          • Defun-notinline
          • Set-bogus-defun-hints-ok
          • Defund-nx
          • Defun$
          • Defund-notinline
          • Defnd
          • Defn
          • Defund-inline
          • Set-bogus-measure-ok
        • Verify-guards
        • Table
        • Mutual-recursion
        • Memoize
        • Make-event
        • Include-book
        • Encapsulate
        • Defun-sk
        • Defttag
        • Defstobj
        • Defpkg
        • Defattach
        • Defabsstobj
        • Defchoose
        • Progn
        • Verify-termination
        • Redundant-events
        • Defmacro
        • Defconst
        • Skip-proofs
        • In-theory
        • Embedded-event-form
        • Value-triple
        • Comp
        • Local
        • Defthm
        • Progn!
        • Defevaluator
        • Theory-invariant
        • Assert-event
        • Defun-inline
        • Project-dir-alist
        • Partial-encapsulate
        • Define-trusted-clause-processor
        • Defproxy
        • Defexec
        • Defun-nx
        • Defthmg
        • Defpun
        • Defabbrev
        • Set-table-guard
        • Name
        • Defrec
        • Add-custom-keyword-hint
        • Regenerate-tau-database
        • Defcong
        • Deftheory
        • Defaxiom
        • Deftheory-static
        • Defund
        • Evisc-table
        • Verify-guards+
        • Logical-name
        • Profile
        • Defequiv
        • Defmacro-untouchable
        • Add-global-stobj
        • Defthmr
        • Defstub
        • Defrefinement
        • Deflabel
        • In-arithmetic-theory
        • Unmemoize
        • Defabsstobj-missing-events
        • Defthmd
        • Fake-event
        • Set-body
        • Defun-notinline
        • Functions-after
        • Macros-after
        • Dump-events
        • Defund-nx
        • Defun$
        • Remove-global-stobj
        • Remove-custom-keyword-hint
        • Dft
        • Defthy
        • Defund-notinline
        • Defnd
        • Defn
        • Defund-inline
        • Defmacro-last
      • Parallelism
      • History
      • Programming
      • Operational-semantics
      • Real
      • Start-here
      • Debugging
      • Miscellaneous
      • Output-controls
      • Macros
      • Interfacing-tools
    • Interfacing-tools
    • Hardware-verification
    • Software-verification
    • Math
    • Testing-utilities
  • Lemma-instance
  • Guard-formula-utilities
  • Hints

Guard-theorem

Use a previously-proved guard theorem

See lemma-instance for a discussion of :guard-theorem lemma instances, as illustrated in the topic guard-theorem-example.

The function guard-theorem is a low-level system utility that returns a translated term. It is essentially the functional version of the gthm macro, which however returns an untranslated term. See gthm.

Subtopics

ACL2-pc::prove-guard
(macro) Verify guards efficiently by using a previous guard theorem.
Guard-theorem-example
How to use a previously-proved guard theorem