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Proof step 49 from proof pathex-class (previous step)

is_obj(str, r, st), is_referencevalue(st[r -- fs ']), fs ' ∈ instfields(st[r -- _type] .type .class), st[st[r -- fs '] .refval -- _type] .type ≤ fs .type, path∃(str, st[r -- fs '] .refval, r0, st) ⊦ r = r0, st[r -- fs '] .refval = jvmref, ∃ refs. refs ≠ [] ∧ refs .first = r ∧ refs .last = r0 ∧ validrefs(str, refs, st[r -- _type] .type, st)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 48:
is_obj(str, r, st), is_referencevalue(st[r -- fs ']), fs ' ∈ instfields(st[r -- _type] .type .class), st[st[r -- fs '] .refval -- _type] .type ≤ fs .type, path∃(str, st[r -- fs '] .refval, r0, st) ⊦ r = r0, st[r -- fs '] .refval = jvmref, ∃ refs. refs ≠ [] ∧ refs .first = r ∧ refs .last = r0 ∧ validrefs(str, refs, st[refs .first -- _type] .type, st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]