[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 110 from proof prepost-scan-all (previous step)

# wlar0 = n0 + vtblpnum, # apebs = n0 + vtblpnum, apebs[vtblpnum] = mkpeb(aechdr(m), avhdr1, buf1, m0, false), buf = mkbuf(LEB_SIZE), avhdr1.size ≠ 0, avhdr1 ≠ empty, n0 ≠ 0, avhdr1.valid?, nx < vtblpnum, bflipset-cons(bflipset, subarray(wlar0, 0, vtblpnum)), indices-erasing(wlar0, nx), ubi-io-inv(apebs), ubi-io-peb-inv(mkpeb(aechdr(m), avhdr1, buf1, m0, false)), unique-sqns(apebs), valid-eraseq(subarray(wlar0, 0, vtblpnum), q), valid-eraseq-stronger(subarray(apebs, 0, vtblpnum), q), valid-global-sqn(subarray(apebs, 0, vtblpnum), sqnum), valid-recs(subarray(apebs, 0, vtblpnum), subarray(wlar0, 0, vtblpnum), recs), valid-recs-sqns(apebs, recs), valid-wl(subarray(apebs, 0, vtblpnum), subarray(wlar0, 0, vtblpnum)), ¬ dups(nx) ⊦ ⟪aubi_io_read_data#(vtblpnum, 0, 0, LEB_SIZE, apebs; buf; boolvar, err); bitflips := bitflips ∨ boolvar; wlar := wlar0[vtblpnum, wlar0[vtblpnum].ec:= m]; if err = ESUCCESS then let ladr = apebs[vtblpnum].vidhdr.vol × apebs[vtblpnum].vidhdr.leb, n = 0 in {if ladr ∈ recs then n := recs[ladr].sqn; if apebs[vtblpnum].vidhdr.size ≠ 0 → apebs[vtblpnum].vidhdr.size ≤ datasize(buf) ∧ apebs[vtblpnum].vidhdr.checksum = checksum(buf, apebs[vtblpnum].vidhdr.size) then {sqnum := max(sqnum, apebs[vtblpnum].vidhdr.sqn + 1); if n ≤ apebs[vtblpnum].vidhdr.sqn then {wlar[vtblpnum] := wl-entry(wlar[vtblpnum].ec, used); if bitflips then bflipset := bflipset ++ vtblpnum; avhdr := apebs[vtblpnum].vidhdr; if ladr ∈ recs then let vtblpnum0 = recs[ladr].pnum in {bflipset := bflipset -- vtblpnum0; wlar[vtblpnum0] := wl-entry(wlar[vtblpnum0].ec, erasing); q := q + eq-entry(vtblpnum0, avhdr.vol × avhdr.leb) '}; recs[ladr] := recovery-entry(vtblpnum, avhdr.sqn)} else {wlar[vtblpnum] := wl-entry(wlar[vtblpnum].ec, erasing); q := q + eq-entry(vtblpnum, ladr.vol × ladr.leb) '}} else {wlar[vtblpnum] := wl-entry(wlar[vtblpnum].ec, erasing); q := q + eq-entry(vtblpnum, none) '}}; vtblpnum := vtblpnum + 1⟫ ( vtblpnum ≤ # apebs ∧ (err = ESUCCESS ∨ ⌊err⌋ ) ∧ ( err = ESUCCESS → # apebs = # wlar ∧ nx < vtblpnum ∧ indices-erasing(wlar, nx) ∧ valid-global-sqn(subarray(apebs, 0, vtblpnum), sqnum) ∧ valid-eraseq(subarray(wlar, 0, vtblpnum), q) ∧ bflipset-cons(bflipset, subarray(wlar, 0, vtblpnum)) ∧ valid-eraseq-stronger(subarray(apebs, 0, vtblpnum), q) ∧ valid-wl(subarray(apebs, 0, vtblpnum), subarray(wlar, 0, vtblpnum)) ∧ valid-recs-sqns(apebs, recs) ∧ valid-recs(subarray(apebs, 0, vtblpnum), subarray(wlar, 0, vtblpnum), recs)) ∧ # apebs < n0 + vtblpnum)

Heuristic elimination applied rule insert elim lemma

And obtained the following new goals

Proof step 111:
# apebs = n0 + vtblpnum, # wlar0 = n0 + vtblpnum, apebs[vtblpnum] = mkpeb(aechdr(m), avhdr1, buf1, m0, false), avhdr1 = avidhdr(v, m1, m2, m3, m4), buf = mkbuf(LEB_SIZE), avhdr1.valid?, nx < vtblpnum, bflipset-cons(bflipset, subarray(wlar0, 0, vtblpnum)), indices-erasing(wlar0, nx), ubi-io-inv(apebs), ubi-io-peb-inv(mkpeb(aechdr(m), avhdr1, buf1, m0, false)), unique-sqns(apebs), valid-eraseq(subarray(wlar0, 0, vtblpnum), q), valid-eraseq-stronger(subarray(apebs, 0, vtblpnum), q), valid-global-sqn(subarray(apebs, 0, vtblpnum), sqnum), valid-recs(subarray(apebs, 0, vtblpnum), subarray(wlar0, 0, vtblpnum), recs), valid-recs-sqns(apebs, recs), valid-wl(subarray(apebs, 0, vtblpnum), subarray(wlar0, 0, vtblpnum)) ⊦ ⟪aubi_io_read_data#(vtblpnum, 0, 0, LEB_SIZE, apebs; buf; boolvar, err); bitflips := bitflips ∨ boolvar; wlar := wlar0[vtblpnum, wlar0[vtblpnum].ec:= m]; if err = ESUCCESS then let ladr = apebs[vtblpnum].vidhdr.vol × apebs[vtblpnum].vidhdr.leb, n = 0 in {if ladr ∈ recs then n := recs[ladr].sqn; if apebs[vtblpnum].vidhdr.size ≠ 0 → apebs[vtblpnum].vidhdr.size ≤ datasize(buf) ∧ apebs[vtblpnum].vidhdr.checksum = checksum(buf, apebs[vtblpnum].vidhdr.size) then {sqnum := max(sqnum, apebs[vtblpnum].vidhdr.sqn + 1); if n ≤ apebs[vtblpnum].vidhdr.sqn then {wlar[vtblpnum] := wl-entry(wlar[vtblpnum].ec, used); if bitflips then bflipset := bflipset ++ vtblpnum; avhdr := apebs[vtblpnum].vidhdr; if ladr ∈ recs then let vtblpnum0 = recs[ladr].pnum in {bflipset := bflipset -- vtblpnum0; wlar[vtblpnum0] := wl-entry(wlar[vtblpnum0].ec, erasing); q := q + eq-entry(vtblpnum0, avhdr.vol × avhdr.leb) '}; recs[ladr] := recovery-entry(vtblpnum, avhdr.sqn)} else {wlar[vtblpnum] := wl-entry(wlar[vtblpnum].ec, erasing); q := q + eq-entry(vtblpnum, ladr.vol × ladr.leb) '}} else {wlar[vtblpnum] := wl-entry(wlar[vtblpnum].ec, erasing); q := q + eq-entry(vtblpnum, none) '}}; vtblpnum := vtblpnum + 1⟫ ( vtblpnum ≤ # apebs ∧ (err = ESUCCESS ∨ ⌊err⌋ ) ∧ ( err = ESUCCESS → # apebs = # wlar ∧ nx < vtblpnum ∧ indices-erasing(wlar, nx) ∧ valid-global-sqn(subarray(apebs, 0, vtblpnum), sqnum) ∧ valid-eraseq(subarray(wlar, 0, vtblpnum), q) ∧ bflipset-cons(bflipset, subarray(wlar, 0, vtblpnum)) ∧ valid-eraseq-stronger(subarray(apebs, 0, vtblpnum), q) ∧ valid-wl(subarray(apebs, 0, vtblpnum), subarray(wlar, 0, vtblpnum)) ∧ valid-recs-sqns(apebs, recs) ∧ valid-recs(subarray(apebs, 0, vtblpnum), subarray(wlar, 0, vtblpnum), recs)) ∧ # apebs < n0 + vtblpnum), avhdr1 = empty, m3 = 0, n0 = 0, dups(nx)

Rule argument

spec: avidheader name: elim seq: ⊦ avhdr.valid? → ( ( ((v = avhdr.vol ∧ m = avhdr.leb) ∧ m0 = avhdr.sqn) ∧ m1 = avhdr.size) ∧ m2 = avhdr.checksum ↔ avhdr = avidhdr(v, m, m0, m1, m2)) subst: [avhdr, v, m, m0, m1, m2] → [avhdr1, v, m1, m2, m3, m4]

Additional information

Used simplifier rules: ⊦ avhdr.valid? → ( ( ((v = avhdr.vol ∧ m = avhdr.leb) ∧ m0 = avhdr.sqn) ∧ m1 = avhdr.size) ∧ m2 = avhdr.checksum ↔ avhdr = avidhdr(v, m, m0, m1, m2)); (elim) Used terms: avhdr1, v, m1, m2, m3, m4