[Imprint][Data Privacy Statement][E-Mail]

View long theorem info. View the proof. Back to main index. View the specification. View theorem base summary, View theorem base listing, the used properties by spec, the dependency list, the symbol table,

Proof step 56 from proof prepost-read-superblock (previous step)

# buf1 = # buf, avol[0] = mapped(buf0), buf = mkbuf(LEB_SIZE), err = err0, m2 = LEB_SIZE, n0 = 0, ebm-vol-inv(avol), is-encoded(sb0, buf0), range=(buf, n0 + m2, buf1, n0 + m2, # buf - n0 + m2), range=(buf, 0, buf1, 0, n0), ⌊err0⌋ ∨ err0 = ESUCCESS ⊦ ⟪if err = ESUCCESS then let m = ? in decode_superblock#(0, buf1, EB_PAGE_SIZE; sb, m; err)⟫ ((err = ESUCCESS ∨ ⌊err⌋ ) ∧ (err = ESUCCESS → sb = sb0)), # avol = 0, err = ESUCCESS

Heuristic symbolic execution applied rule if negative right

And obtained the following new goals

Proof step 57:
# buf1 = # buf, avol[0] = mapped(buf0), buf = mkbuf(LEB_SIZE), err = err0, m2 = LEB_SIZE, n0 = 0, ebm-vol-inv(avol), is-encoded(sb0, buf0), range=(buf, 0, buf1, 0, n0), range=(buf, n0 + m2, buf1, n0 + m2, # buf - n0 + m2), ⌊err0⌋ ∨ err0 = ESUCCESS ⊦ ⟪skip⟫ ((err = ESUCCESS ∨ ⌊err⌋ ) ∧ (err = ESUCCESS → sb = sb0)), # avol = 0, err = ESUCCESS

Rule argument

pos: right 1

Proof step 56 from proof prepost-read-superblock (previous step)

Heuristic symbolic execution applied rule if negative right

And obtained the following new goals

Rule argument

Additional information