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Proof step 3 from proof unchanged-isarray (previous step)

∀ r0. (path∃(str, r, r0, st) ↔ path∃(str, r, r0, st1)) ∧ (path∃(str, r, r0, st) → unchangedNorec(r0, st, st1)), is_array(str, r, st) ⊦ is_array(str, r, st1)

User applied rule all left

And obtained the following new goals

Proof step 2:
⊦ unchangedNorec(r, st, st0) ∧ is_array(str, r, st) → (¬ is_array(str, r, st0) ↔ false)

Rule argument

[EXRARG : pos: left 1, [extquanttermlist: (r)abort:F, discard:F, computed:F]]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ path∃(str, r, r, st) ↔ r = jvmref ∨ r ≠ jvmref ∧ is_valid_ref(str, r, st)], [CSIMPSEQ : ⊦ is_array(str, r, st) → is_valid_ref(str, r, st)])], [EXTRATERMS : (r)]]