| FLITInv(gs, lsf, pcf), FLITInv(gs0, lsf0, pcf0), FLITPSCInv(ags, alsf, apcf), flitStep(mkstate(gs, lsf, pcf), a, mkstate(gs0, lsf0, pcf0)), abs(mkstate(gs, lsf, pcf), mkstate(ags, alsf, apcf)), ren(a, ags, alsf) = aa ⊦ (aa = τ ⊃ abs(mkstate(gs0, lsf0, pcf0), mkstate(ags, alsf, apcf)) ;∃ ags0, alsf0, apcf0. flitpscStep(mkstate(ags, alsf, apcf), aa, mkstate(ags0, alsf0, apcf0)) ∧ abs(mkstate(gs0, lsf0, pcf0), mkstate(ags0, alsf0, apcf0)) ) |