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Proof step 15 from proof pathex-class (previous step)

refs0 .first = st[r -- fs '] .refval, is_obj(str, r, st), fs ' ∈ instfields(st[r -- _type] .type .class), is_referencevalue(st[r -- fs ']), validrefs(str, refs0, fs .type, st) ⊦ refs0 = [], r = refs0 .last, fs ' ∈ instfields(st[r -- _type] .type .class) ∧ is_referencevalue(st[r -- fs ']) ∧ ( st[r -- fs '] .refval ≠ jvmref ∧ st[st[r -- fs '] .refval -- _type] .type ≤ fs .type ∧ path∃(str, st[r -- fs '] .refval, refs0 .last, st) ∨ st[r -- fs '] .refval = jvmref ∧ refs0 .last = jvmref)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 14:
refs0 .first = st[r -- fs '] .refval, is_obj(str, r, st), fs ' ∈ instfields(st[r -- _type] .type .class), is_referencevalue(st[r -- fs ']), validrefs(str, refs0, fs .type, st) ⊦ refs0 = [], r = refs0 .last, refs0 .first ≠ jvmref ∧ st[refs0 .first -- _type] .type ≤ fs .type ∧ path∃(str, refs0 .first, refs0 .last, st), refs0 .first = jvmref ∧ refs0 .last = jvmref

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]