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Proof step 6 from proof hasSharing-dd-help (previous step)

¬ refs1 ≠ [], (r2 ' + refs1) .last = (r1 ' + refs0) .last, validrefs(str, r1 ' + refs0, st[r1 -- _type] .type, st), validrefs(str, r2 ' + refs1, st[r2 -- _type] .type, st), path∃(str, r, r1, st), path∃(str, r, r2, st) ⊦ (r1 ' + refs0) .last = jvmref, r2 = r1, path∃(str, r2, r1, st), path∃(str, r1, r2, st), hasSharing(r, st)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 5:
validrefs(str, (r1 ' + refs0) .last ', st[(r1 ' + refs0) .last -- _type] .type, st), validrefs(str, r1 ' + refs0, st[r1 -- _type] .type, st), path∃(str, r, (r1 ' + refs0) .last, st), path∃(str, r, r1, st) ⊦ (r1 ' + refs0) .last = r1, (r1 ' + refs0) .last = jvmref, hasSharing(r, st), path∃(str, r1, (r1 ' + refs0) .last, st), path∃(str, (r1 ' + refs0) .last, r1, st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ r ' .last = r], [CSIMPSEQ : ⊦ (refs + refs0) + refs1 = refs + refs0 + refs1], [CSIMPSEQ : ⊦ refs + [] = refs])]]