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Proof step 7 from proof unchNorec-isobj-01 (previous step)

is_obj(r, st), class+∃(str, st[r -- _type] .type .class), unchangedNorec(r, st, st0) ⊦ is_abstract(st[r -- _type] .type .class), is_obj(str, r, st0)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 2:
⊦ is_obj(str, r, st) ↔ class+∃(str, st[r -- _type] .type .class) ∧ ¬ is_abstract(st[r -- _type] .type .class) ∧ is_obj(r, st)
Proof step 6:
is_obj(r, st), class+∃(str, st[r -- _type] .type .class), unchangedNorec(r, st, st0) ⊦ is_abstract(st[r -- _type] .type .class), class+∃(str, st0[r -- _type] .type .class) ∧ ¬ is_abstract(st0[r -- _type] .type .class) ∧ is_obj(r, st0)

Rule argument

[x0lemmaarg: spec-name: addfuns instance-name: lemma-name: is-real-object-def antecedent: succedent: is_obj(str, r, st) ↔ class+∃(str, st[r -- _type] .type .class) ∧ ¬ is_abstract(st[r -- _type] .type .class) ∧ is_obj(r, st) substlist: [st, r, str] → [st0, r, str] add preconditions?: F is rewrite lemma?: T current spec?: F rotate lemma?: F replace all?: T paths: ((1, 0, 1)) dummy: () ]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (st0, r, str)]]