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Proof step 1 from proof alloc (conclusion)

P(H) ⊦ ⟪alloc(; r, H)⟫ ((r =>_ * P))(H)

Heuristic weak unfold applied rule call right

And obtained the following new goals

Proof step 2:
P(H) ⊦ ⟪choose r0 with ¬ r0 ∈ H ∧ r0 ≠ null in r := r0, H := H ++ r0⟫ ((r =>_ * P))(H)

Rule argument

pos: right 1

Additional information

Used simplifier rules: alloc(; r, H) {choose r0 with ¬ r0 ∈ H ∧ r0 ≠ null in r := r0, H := H ++ r0};