| ⊦ ls.t ≠ t0 ∧ ( ( ctrok(gs.fctr, gs.fwriters) ∧ writersOk(gs.bq, gs.pq, gs.fwriters) ∧ pendingOk(gs.bq, gs.pq) ∧ SFTrailing(gs.bq) ∧ readFOsOk(gs.rfo, gs.fwriters)) ∧ noPendingW(ls.t, gs.bq, gs.pq) ∧ notMember(ls.t, gs.fwriters) ∧ notMember(ls.t, gs.freaders) ∧ ¬ SF ∈ gs.bq(ls.t) ∧ gs.rfo(ls.t) = gs.bq(ls.t)) ∧ pre(gs, ls, R1, a) ∧ pcstepf(gs, ls, R1, a) = R2 → relyws(t0, gs.freaders, gstepf(gs, ls, R1, a).freaders) ∧ relyws(t0, gs.fwriters, gstepf(gs, ls, R1, a).fwriters) ∧ rely(t0, gs.pq, gs.bq, gstepf(gs, ls, R1, a).pq, gstepf(gs, ls, R1, a).bq) ∧ gs.bq(t0) ⊒w gstepf(gs, ls, R1, a).bq(t0) ∧ (gs.rfo(t0) = [] → gstepf(gs, ls, R1, a).rfo(t0) = []) ∧ (gs.rfo(t0) = gs.bq(t0) → gstepf(gs, ls, R1, a).rfo(t0) = gstepf(gs, ls, R1, a).bq(t0)) ∧ ( gs.rfo(t0) + SF ' = gs.bq(t0) → gstepf(gs, ls, R1, a).rfo(t0) + SF ' = gstepf(gs, ls, R1, a).bq(t0) ∨ gstepf(gs, ls, R1, a).rfo(t0) = gstepf(gs, ls, R1, a).bq(t0)) |
gs.rfo(ls.t) = gs.bq(ls.t), pcstepf(gs, ls, R1, a) = R2, ls.t ≠ t0, SFTrailing(gs.bq), ctrok(gs.fctr, gs.fwriters), noPendingW(ls.t, gs.bq, gs.pq), notMember(ls.t, gs.fwriters), notMember(ls.t, gs.freaders), pendingOk(gs.bq, gs.pq), pre(gs, ls, R1, a), readFOsOk(gs.rfo, gs.fwriters), writersOk(gs.bq, gs.pq, gs.fwriters), ¬ SF ∈ gs.bq(ls.t) ⊦ relyws(t0, gs.freaders, gstepf(gs, ls, R1, a).freaders) ∧ relyws(t0, gs.fwriters, gstepf(gs, ls, R1, a).fwriters) ∧ rely(t0, gs.pq, gs.bq, gstepf(gs, ls, R1, a).pq, gstepf(gs, ls, R1, a).bq) ∧ gs.bq(t0) ⊒w gstepf(gs, ls, R1, a).bq(t0) ∧ (gs.rfo(t0) = [] → gstepf(gs, ls, R1, a).rfo(t0) = []) ∧ (gs.rfo(t0) = gs.bq(t0) → gstepf(gs, ls, R1, a).rfo(t0) = gstepf(gs, ls, R1, a).bq(t0)) ∧ ( gs.rfo(t0) + SF ' = gs.bq(t0) → gstepf(gs, ls, R1, a).rfo(t0) + SF ' = gstepf(gs, ls, R1, a).bq(t0) ∨ gstepf(gs, ls, R1, a).rfo(t0) = gstepf(gs, ls, R1, a).bq(t0))
| gs.rfo(ls.t) = gs.bq(ls.t), pcstepf(gs, ls, R1, a) = R2, ls.t ≠ t0, SFTrailing(gs.bq), ctrok(gs.fctr, gs.fwriters), noPendingW(ls.t, gs.bq, gs.pq), notMember(ls.t, gs.fwriters), notMember(ls.t, gs.freaders), pendingOk(gs.bq, gs.pq), pre(gs, ls, R1, a), readFOsOk(gs.rfo, gs.fwriters), writersOk(gs.bq, gs.pq, gs.fwriters), ¬ SF ∈ gs.bq(ls.t) ⊦ relyws(t0, gs.freaders, gstepf(gs, ls, R1, a).freaders) ∧ relyws(t0, gs.fwriters, gstepf(gs, ls, R1, a).fwriters) ∧ rely(t0, gs.pq, gs.bq, gstepf(gs, ls, R1, a).pq, gstepf(gs, ls, R1, a).bq) ∧ gs.bq(t0) ⊒w gstepf(gs, ls, R1, a).bq(t0) ∧ (gs.rfo(t0) = [] → gstepf(gs, ls, R1, a).rfo(t0) = []) ∧ (gs.rfo(t0) = gs.bq(t0) → gstepf(gs, ls, R1, a).rfo(t0) = gstepf(gs, ls, R1, a).bq(t0)) ∧ ( gs.rfo(t0) + SF ' = gs.bq(t0) → gstepf(gs, ls, R1, a).rfo(t0) + SF ' = gstepf(gs, ls, R1, a).bq(t0) ∨ gstepf(gs, ls, R1, a).rfo(t0) = gstepf(gs, ls, R1, a).bq(t0)) |
Used simplifier rules: ⊦ (gs.freaders:= fwriters0).bq = gs.bq; (s) ⊦ gstepf(gs, ls, R1, a) = gs.freaders:= gs.freaders(ls.loc := gs.freaders(ls.loc) ++ ls.t); (s) ⊦ (gs.freaders:= fwriters0).rfo = gs.rfo; (s) ⊦ bel ⊒w bel; (s) ⊦ rely(t, pq, bq, pq, bq); (s) ⊦ (gs.freaders:= fwriters0).pq = gs.pq; (s) ⊦ relyws(t, tsf, tsf); (s) ⊦ (gs.freaders:= fwriters0).fwriters = gs.fwriters; (s) ⊦ t ≠ t0 → relyws(t, tsf, tsf(l := tsf(l) ++ t0)); (ss) ⊦ (gs.freaders:= fwriters0).freaders = fwriters0; (s) ⊦ ((mem ⊕ p))(l) = mem(l) ⊕ p(l); (s) ⊦ pre(gs, ls, R1, a) ↔ a = doRead(ls.t, ls.loc, ((gs.pmem ⊕ gs.pq))(ls.loc)); (s) ⊦ pcstepf(gs, ls, R1, a) = R2; (s)
The following image shows the proof tree of sequent calculus. The proved goal is at the bottom. You can click on the nodes to view additional rules. See here for details on colors in a proof tree.