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Proof step 236 from proof refine-add-ind (previous step)

# lpt0 = # avol, # buf1 = 2 * NODE_HEADER_SIZE + ind.alignedsize, # lpt1 = # avol, isbuf ↔ isbuf1, lpt1[m1] = mklp(m, # buf0, LP_INDEX_NODES, m5), istore[m1] = indexblock(indx, lax, m), avol[m1] = mapped(buf0), adr = adr2, adr1 = adr2, gstore = gstore1, gstore0 = gstore2, keyset(gch) = gc-heap(lpt1, log1), log = log1, maxino = m0, ns = ns0, pstate = index(m1), remove-refsize0(gstore1) = gstore1, remove-refsize0(istore0) = istore0, elems log1 ∩ ginval = ∅, dom gstore1 ∪ elems log1 = dom gstore2 ∪ ginval, m1 < # avol, ginval < # avol, abs-gstore(avol, lpt1, gstore2, ginval), abs-istore(avol, lpt1, istore), abs-node(buf1, ind), awbuf-inv(avol, buffered(m1)), bin-heap-inv(gch, lpt1), buf-ro-rw-mode(false, buffered(m1), lpt1, avol), bufs-log-only(buffered(m1), log1, lpt1), flash-lpt-cons(lpt0, istore0, gstore1), freelist-cons(lpt1, freelist), inv(indexblock(indx, lax, m)), inv(gstore2 \ ginval), inv(gstore1), inv(istore), inv(istore0), log-group-block(log1, lpt1), lpt-free-unref(lpt0), lpt-free-unref(lpt1), lpt-leb-size(lpt0), lpt-leb-size(lpt1), lpt-ram-flash(lpt1[m1, mklp(m, LEB_SIZE, LP_INDEX_NODES, m5)], lpt0, log1), lpt-ram-flash(lpt1, lpt0, log1), m1 ∈ istore, # buf0 + # buf1 ≤ LEB_SIZE, istore0 ⊑ istore, ⌊err⌋ , isbuf1 → synced(avol) ⊦ ⟨if pstate.index? ∨ pstate = readonly then if pstate = readonly then err0 := EROFS else {choose m, err with ¬ @(pstate.lnum, m, ind.flashsize) ∈ istore ∧ err = ESUCCESS ∨ ⌊err⌋ in adr := @(pstate.lnum, m, ind.flashsize), err0 := err; if err0 = ESUCCESS then {istore[pstate.lnum].indlist := istore[pstate.lnum].indlist + ind; istore[pstate.lnum].ladrlist := istore[pstate.lnum].ladrlist + @(adr.pos, adr.size)} else adr := ?, pstate := readonly; isbuf := ?} else abort⟩ (abs-istore(avol, lpt1[m1, mklp(m, LEB_SIZE, LP_INDEX_NODES, m5)], istore) ∧ (isbuf → synced(avol)) ∧ pstate = readonly ∧ adr1 = adr ∧ err = err0), dups(log1)

Heuristic symbolic execution applied rule if positive right

And obtained the following new goals

Proof step 237:
# lpt1 = # avol, # buf1 = 2 * NODE_HEADER_SIZE + ind.alignedsize, # lpt0 = # avol, isbuf ↔ isbuf1, avol[m1] = mapped(buf0), istore[m1] = indexblock(indx, lax, m), lpt1[m1] = mklp(m, # buf0, LP_INDEX_NODES, m5), adr = adr2, adr1 = adr2, gstore = gstore1, gstore0 = gstore2, keyset(gch) = gc-heap(lpt1, log1), log = log1, maxino = m0, ns = ns0, pstate = index(m1), remove-refsize0(istore0) = istore0, remove-refsize0(gstore1) = gstore1, elems log1 ∩ ginval = ∅, dom gstore1 ∪ elems log1 = dom gstore2 ∪ ginval, ginval < # avol, m1 < # avol, abs-gstore(avol, lpt1, gstore2, ginval), abs-istore(avol, lpt1, istore), abs-node(buf1, ind), awbuf-inv(avol, buffered(m1)), bin-heap-inv(gch, lpt1), buf-ro-rw-mode(false, buffered(m1), lpt1, avol), bufs-log-only(buffered(m1), log1, lpt1), flash-lpt-cons(lpt0, istore0, gstore1), freelist-cons(lpt1, freelist), inv(istore0), inv(istore), inv(gstore1), inv(gstore2 \ ginval), inv(indexblock(indx, lax, m)), log-group-block(log1, lpt1), lpt-free-unref(lpt1), lpt-free-unref(lpt0), lpt-leb-size(lpt1), lpt-leb-size(lpt0), lpt-ram-flash(lpt1, lpt0, log1), lpt-ram-flash(lpt1[m1, mklp(m, LEB_SIZE, LP_INDEX_NODES, m5)], lpt0, log1), m1 ∈ istore, # buf0 + # buf1 ≤ LEB_SIZE, istore0 ⊑ istore, ⌊err⌋ , isbuf1 → synced(avol) ⊦ ⟨if pstate = readonly then err0 := EROFS else {choose m, err with ¬ @(pstate.lnum, m, ind.flashsize) ∈ istore ∧ err = ESUCCESS ∨ ⌊err⌋ in adr := @(pstate.lnum, m, ind.flashsize), err0 := err; if err0 = ESUCCESS then {istore[pstate.lnum].indlist := istore[pstate.lnum].indlist + ind; istore[pstate.lnum].ladrlist := istore[pstate.lnum].ladrlist + @(adr.pos, adr.size)} else adr := ?, pstate := readonly; isbuf := ?}⟩ (abs-istore(avol, lpt1[m1, mklp(m, LEB_SIZE, LP_INDEX_NODES, m5)], istore) ∧ (isbuf → synced(avol)) ∧ pstate = readonly ∧ adr1 = adr ∧ err = err0), dups(log1)

Rule argument

Additional information

Used simplifier rules: ⊦ index(m).index?; (s)