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Proof step 679 from proof hasSharing-put-index-refval (previous step)

st[r0 -- sks] = refval(r1), st[r0 -- _type] .type = mkarraytype(ty), st[r2 -- sks2] = refval(r1), fits(r2, sks2, st), fits(r0, sks, st), disjoint(str, r0 ' + r2 ', st), validref(str, r2, ty, st), i < st[r0 -- _length] .intval, 0 ≤ i, 0 < st[r0 -- _length] .intval ⊦ i ' ' + sks2 = sks, r0 = jvmref, r0 = r2, r1 = jvmref, sks = [], sks2 = [], r2 = jvmref, junkref(str, r0, st), hasSharing(r2, st), hasSharing(r0, st), ∃ sks0, sks3. sks = sks0 + i ' ' + sks3 ∧ st[r0 -- sks0] .refval = r0 ∧ (∀ sks2. sks2 + i ' ' ⊑ sks0 → st[r0 -- sks2] .refval ≠ st[r0 -- sks0] .refval), ∃ sks0, sks1. sks2 = sks0 + i ' ' + sks1 ∧ st[r2 -- sks0] .refval = r0 ∧ (∀ sks3. sks3 + i ' ' ⊑ sks0 → st[r2 -- sks3] .refval ≠ st[r2 -- sks0] .refval)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 673:
⊦ validreflist(str, mkjavavalues(refs), mkclasstype(`java.lang.Object' .class), st) → ( disjoint(str, refs, st) ↔ ¬ (∃ r1, sks1, r2, sks2. r1 ∈ refs ∧ r2 ∈ refs ∧ r1 ≠ r2 ∧ fits(r1, sks1, st) ∧ fits(r2, sks2, st) ∧ st[r1 -- sks1] = st[r2 -- sks2] ∧ st[r1 -- sks1] .refval ≠ jvmref))
Proof step 676:
¬ validreflist(str, mkjavavalues(r0 ' + r2 '), mkclasstype(`java.lang.Object' .class), st), st[r0 -- sks] = refval(r1), st[r0 -- _type] .type = mkarraytype(ty), st[r2 -- sks2] = refval(r1), fits(r2, sks2, st), fits(r0, sks, st), disjoint(str, r0 ' + r2 ', st), validref(str, r2, ty, st), i < st[r0 -- _length] .intval, 0 ≤ i, 0 < st[r0 -- _length] .intval ⊦ i ' ' + sks2 = sks, r0 = jvmref, r0 = r2, r1 = jvmref, sks = [], sks2 = [], r2 = jvmref, junkref(str, r0, st), hasSharing(r2, st), hasSharing(r0, st), ∃ sks0, sks3. sks = sks0 + i ' ' + sks3 ∧ st[r0 -- sks0] .refval = r0 ∧ (∀ sks2. sks2 + i ' ' ⊑ sks0 → st[r0 -- sks2] .refval ≠ st[r0 -- sks0] .refval), ∃ sks0, sks1. sks2 = sks0 + i ' ' + sks1 ∧ st[r2 -- sks0] .refval = r0 ∧ (∀ sks3. sks3 + i ' ' ⊑ sks0 → st[r2 -- sks3] .refval ≠ st[r2 -- sks0] .refval)
Proof step 678:
validreflist(str, mkjavavalues(r0 ' + r2 '), mkclasstype(`java.lang.Object' .class), st), st[r0 -- sks] = refval(r1), st[r0 -- _type] .type = mkarraytype(ty), st[r2 -- sks2] = refval(r1), fits(r2, sks2, st), fits(r0, sks, st), ∀ r1, sks1, r, sks2. ¬ ( r1 ∈ r0 ' + r2 ' ∧ r ∈ r0 ' + r2 ' ∧ r1 ≠ r ∧ fits(r1, sks1, st) ∧ fits(r, sks2, st) ∧ st[r1 -- sks1] = st[r -- sks2] ∧ st[r1 -- sks1] .refval ≠ jvmref), validref(str, r2, ty, st), i < st[r0 -- _length] .intval, 0 ≤ i, 0 < st[r0 -- _length] .intval ⊦ i ' ' + sks2 = sks, r0 = jvmref, r0 = r2, r1 = jvmref, sks = [], sks2 = [], r2 = jvmref, junkref(str, r0, st), hasSharing(r2, st), hasSharing(r0, st), ∃ sks0, sks3. sks = sks0 + i ' ' + sks3 ∧ st[r0 -- sks0] .refval = r0 ∧ (∀ sks2. sks2 + i ' ' ⊑ sks0 → st[r0 -- sks2] .refval ≠ st[r0 -- sks0] .refval), ∃ sks0, sks1. sks2 = sks0 + i ' ' + sks1 ∧ st[r2 -- sks0] .refval = r0 ∧ (∀ sks3. sks3 + i ' ' ⊑ sks0 → st[r2 -- sks3] .refval ≠ st[r2 -- sks0] .refval)

Rule argument

[x0lemmaarg: spec-name: instance-name: lemma-name: disjoint-def-fits antecedent: succedent: validreflist (str, mkjavavalues(refs), mkclasstype(`java.lang.Object' .class), st) → ( disjoint(str, refs, st) ↔ ¬ (∃ r1, sks1, r2, sks2. r1 ∈ refs ∧ r2 ∈ refs ∧ r1 ≠ r2 ∧ fits(r1, sks1, st) ∧ fits(r2, sks2, st) ∧ st[r1 -- sks1] = st[r2 -- sks2] ∧ st[r1 -- sks1] .refval ≠ jvmref)) substlist: [st, refs, str] → [st, r0 ' + r2 ', str] add preconditions?: F is rewrite lemma?: T current spec?: T rotate lemma?: F replace all?: T paths: ((0, 0, 5)) dummy: () ]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (st, r0 ' + r2 ', str)]]