| 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), ctrok(gs0.fctr, gs0.fwriters) ∧ writersOk(gs0.bq, gs0.pq, gs0.fwriters) ∧ pendingOk(gs0.bq, gs0.pq) ∧ SFTrailing(gs0.bq) ∧ readFOsOk(gs0.rfo, gs0.fwriters), ctrok(ags.ctr, ags.writers) ∧ writersOk(ags.p, ags.writers) ∧ pendingOk(ags.p), lsf(t) = ls, lsf0(t) = ls0, alsf(t) = als, alsf(t).t = t, lsf(t).t = t, ∀ t0. t0 ≠ t → lsf(t0).t = t0, ∀ t0. t0 ≠ t → alsf(t0).t = t0, pcf(t) = R2, pcf0(t) = R4, apcf(t) = apc, noPendingW(t, gs.bq, gs.pq) ∧ notMember(t, gs.fwriters) ∧ oneMember(t, ls.loc, gs.freaders) ∧ ¬ SF ∈ gs.bq(t) ∧ gs.rfo(t) = gs.bq(t), noPendingW(t, gs0.bq, gs0.pq) ∧ notMember(t, gs0.fwriters) ∧ notMember(t, gs0.freaders) ∧ ¬ SF ∈ gs0.bq(t) ∧ gs0.rfo(t) = gs0.bq(t), FLITPSCLInv(ags, als, apc), ∀ t0. t0 ≠ t → FLITLInv(gs, lsf(t0), pcf(t0)) ∧ FLITPSCLInv(ags, alsf(t0), apcf(t0)) ∧ labs(gs, lsf(t0), pcf(t0), ags, alsf(t0), apcf(t0)), pre(ags, als, apc, ctrReadPSC(ls.t, loc, fctr(loc))) → ags0 = gstepf(ags, als, apc, ctrReadPSC(ls.t, loc, fctr(loc))) ∧ als0 = lstepf(ags, als, apc, ctrReadPSC(ls.t, loc, fctr(loc))) ∧ apc0 = pcstepf(ags, als, apc, ctrReadPSC(ls.t, loc, fctr(loc))), ctrok(ags0.ctr, ags0.writers) ∧ writersOk(ags0.p, ags0.writers) ∧ pendingOk(ags0.p), pre(gs, ls, R2, ctrRead(ls.t, loc, fctr(loc))) ∧ gs0 = gstepf(gs, ls, R2, ctrRead(ls.t, loc, fctr(loc))) ∧ ls0 = lstepf(gs, ls, R2, ctrRead(ls.t, loc, fctr(loc))) ∧ R4 = pcstepf(gs, ls, R2, ctrRead(ls.t, loc, fctr(loc))), ags.mem = gs.pmem ∧ ags.ctr = gs.fctr ∧ reorder(ags.p, gs.pq, gs.rfo) ∧ ags.writers = gs.fwriters, ls.t = als.t ∧ apc = R2 ∧ ls.loc = als.l ∧ ls.val = als.v ⊦ pre(ags, als, apc, ctrReadPSC(ls.t, loc, fctr(loc))) ∧ (ags0.mem = gs0.pmem ∧ ags0.ctr = gs0.fctr ∧ reorder(ags0.p, gs0.pq, gs0.rfo) ∧ ags0.writers = gs0.fwriters) ∧ ls0.t = als0.t ∧ apc0 = R4 ∧ ls0.loc = als0.l ∧ ls0.val = als0.v |