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Proof step 5 from proof inv-add-log-leb (previous step)

# lpt = # avol, m = m1, m0 = m2, ebm-vol-inv(avol) ⊦ ⟪choose err0 with ⌊err0⌋ ∨ err0 = ESUCCESS in err := err0; if err = ESUCCESS then plog := plog + m0⟫ true

Heuristic symbolic execution applied rule choose right

And obtained the following new goals

Proof step 6:
# lpt = # avol, m = m1, m0 = m2, ebm-vol-inv(avol), ⌊err0⌋ ∨ err0 = ESUCCESS ⊦ ⟪err := err0; if err = ESUCCESS then plog := plog + m0⟫ true
Proof step 10:
# lpt = # avol, m = m1, m0 = m2, ebm-vol-inv(avol) ⊦ ∃ err0. ⌊err0⌋ ∨ err0 = ESUCCESS

Proof step 5 from proof inv-add-log-leb (previous step)

Heuristic symbolic execution applied rule choose right

And obtained the following new goals

Rule argument

Additional information