[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 4 from proof CSEQ-sat-rely-guar (previous step)

CInv(n, Act, CS), Idle(m, CS), m ≤ n ⊦ [: Act, Inp, CS, Outp | CRely(m, Act', CS', Act'', CS'') , CGuar(m, Act, CS, Act', CS') , CInv(n, Act, CS) , { skip or {Act(m) := true; [PL CInv(n, Act, CS) ∧ Act(m) ∧ m ≤ n ∧ Idle(m, CS) → (CRely(m, Act', CS', Act'', CS'') ∧ (CInv(n, Act', CS') ∧ Act'(m) → CInv(n, Act'', CS'') ∧ Act''(m))) -+-> (last ⊃ CInv(n, Act, CS) ∧ Idle(m, CS) ∧ Act(m) ;CGuar(m, Act, CS, Act', CS') ∧ (CInv(n, Act, CS) ∧ Act(m) → CInv(n, Act', CS') ∧ Act'(m)) ) ]; Act(m) := false}} star ] CInv(n, Act, CS)

User applied rule VD induction

And obtained the following new goals

Proof step 5:
INDHYP-nat(N), CInv(n, Act, CS), Idle(m, CS), m ≤ n ⊦ [: Act, Inp, CS, Outp | (CRely(m, Act', CS', Act'', CS'') ∧ N = N'' +1) , CGuar(m, Act, CS, Act', CS') , CInv(n, Act, CS) , { skip or {Act(m) := true; [PL CInv(n, Act, CS) ∧ Act(m) ∧ m ≤ n ∧ Idle(m, CS) → (CRely(m, Act', CS', Act'', CS'') ∧ (CInv(n, Act', CS') ∧ Act'(m) → CInv(n, Act'', CS'') ∧ Act''(m))) -+-> (last ⊃ CInv(n, Act, CS) ∧ Idle(m, CS) ∧ Act(m) ;CGuar(m, Act, CS, Act', CS') ∧ (CInv(n, Act, CS) ∧ Act(m) → CInv(n, Act', CS') ∧ Act'(m)) ) ]; Act(m) := false}} star ] CInv(n, Act, CS)

Rule argument

indvar: [: Act, Inp, CS, Outp | CRely(m, Act', CS', Act'', CS'') , CGuar(m, Act, CS, Act', CS') , CInv(n, Act, CS) , { skip or {Act(m) := true; [PL CInv(n, Act, CS) ∧ Act(m) ∧ m ≤ n ∧ Idle(m, CS) → ( CRely(m, Act', CS', Act'', CS'') ∧ ( CInv(n, Act', CS') ∧ Act'(m) → CInv(n, Act'', CS'') ∧ Act''(m))) -+-> (last ⊃ CInv(n, Act, CS) ∧ Idle(m, CS) ∧ Act(m) ; CGuar(m, Act, CS, Act', CS') ∧ ( CInv(n, Act, CS) ∧ Act(m) → CInv(n, Act', CS') ∧ Act'(m)) ) ]; Act(m) := false}} star ] CInv(n, Act, CS) wfpred: <

Additional information

Used simplifier rules: <; (wellfounded) Used terms: INDHYP-nat(N), [: Act, Inp, CS, Outp | CRely(m, Act', CS', Act'', CS'') , CGuar(m, Act, CS, Act', CS') , CInv(n, Act, CS) , { skip or {Act(m) := true; [PL CInv(n, Act, CS) ∧ Act(m) ∧ m ≤ n ∧ Idle(m, CS) → ( CRely(m, Act', CS', Act'', CS'') ∧ ( CInv(n, Act', CS') ∧ Act'(m) → CInv(n, Act'', CS'') ∧ Act''(m))) -+-> (last ⊃ CInv(n, Act, CS) ∧ Idle(m, CS) ∧ Act(m) ; CGuar(m, Act, CS, Act', CS') ∧ ( CInv(n, Act, CS) ∧ Act(m) → CInv(n, Act', CS') ∧ Act'(m)) ) ]; Act(m) := false}} star ] CInv(n, Act, CS)