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Proof step 22 from proof content-trunc (previous step)

n2 + m0 * VFS_PAGE_SIZE < VFS_PAGE_SIZE + VFS_PAGE_SIZE * n0, n1 < VFS_PAGE_SIZE, n2 < VFS_PAGE_SIZE ⊦ (m0 * VFS_PAGE_SIZE < n0 * VFS_PAGE_SIZE + n1 ∧ m0 ∈ content ⊃ content[m0];zeropage)[n2] = (m0 ∈ content ⊃ content[m0];zeropage)[n2], n1 = 0

User applied rule case distinction

And obtained the following new goals

Proof step 23:
n2 < VFS_PAGE_SIZE, n1 < VFS_PAGE_SIZE, n2 + m0 * VFS_PAGE_SIZE < VFS_PAGE_SIZE + VFS_PAGE_SIZE * n0, ¬ m0 * VFS_PAGE_SIZE < n0 * VFS_PAGE_SIZE + n1 ∨ ¬ m0 ∈ content ⊦ (zeropage)[n2] = (m0 ∈ content ⊃ content[m0];zeropage)[n2], n1 = 0

Rule argument

pos: right 1

Proof step 22 from proof content-trunc (previous step)

User applied rule case distinction

And obtained the following new goals

Rule argument

Additional information