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• Soutcome-result

Soutcome-result-equiv

Basic equivalence relation for soutcome-result structures.

Definitions and Theorems

Function: soutcome-result-equiv$inline

(defun soutcome-result-equiv$inline (acl2::x acl2::y)
  (declare (xargs :guard (and (soutcome-resultp acl2::x)
                              (soutcome-resultp acl2::y))))
  (equal (soutcome-result-fix acl2::x)
         (soutcome-result-fix acl2::y)))

Theorem: soutcome-result-equiv-is-an-equivalence

(defthm soutcome-result-equiv-is-an-equivalence
  (and (booleanp (soutcome-result-equiv x y))
       (soutcome-result-equiv x x)
       (implies (soutcome-result-equiv x y)
                (soutcome-result-equiv y x))
       (implies (and (soutcome-result-equiv x y)
                     (soutcome-result-equiv y z))
                (soutcome-result-equiv x z)))
  :rule-classes (:equivalence))

Theorem: soutcome-result-equiv-implies-equal-soutcome-result-fix-1

(defthm soutcome-result-equiv-implies-equal-soutcome-result-fix-1
  (implies (soutcome-result-equiv acl2::x x-equiv)
           (equal (soutcome-result-fix acl2::x)
                  (soutcome-result-fix x-equiv)))
  :rule-classes (:congruence))

Theorem: soutcome-result-fix-under-soutcome-result-equiv

(defthm soutcome-result-fix-under-soutcome-result-equiv
  (soutcome-result-equiv (soutcome-result-fix acl2::x)
                         acl2::x)
  :rule-classes (:rewrite :rewrite-quoted-constant))

Theorem: equal-of-soutcome-result-fix-1-forward-to-soutcome-result-equiv

(defthm
    equal-of-soutcome-result-fix-1-forward-to-soutcome-result-equiv
  (implies (equal (soutcome-result-fix acl2::x)
                  acl2::y)
           (soutcome-result-equiv acl2::x acl2::y))
  :rule-classes :forward-chaining)

Theorem: equal-of-soutcome-result-fix-2-forward-to-soutcome-result-equiv

(defthm
    equal-of-soutcome-result-fix-2-forward-to-soutcome-result-equiv
  (implies (equal acl2::x (soutcome-result-fix acl2::y))
           (soutcome-result-equiv acl2::x acl2::y))
  :rule-classes :forward-chaining)

Theorem: soutcome-result-equiv-of-soutcome-result-fix-1-forward

(defthm soutcome-result-equiv-of-soutcome-result-fix-1-forward
  (implies (soutcome-result-equiv (soutcome-result-fix acl2::x)
                                  acl2::y)
           (soutcome-result-equiv acl2::x acl2::y))
  :rule-classes :forward-chaining)

Theorem: soutcome-result-equiv-of-soutcome-result-fix-2-forward

(defthm soutcome-result-equiv-of-soutcome-result-fix-2-forward
  (implies
       (soutcome-result-equiv acl2::x (soutcome-result-fix acl2::y))
       (soutcome-result-equiv acl2::x acl2::y))
  :rule-classes :forward-chaining)