Formal Analysis of Fairness for Optimistic Multiparty Contract Signing Protocol

Algorithm 4

Modeling fairness of 𝑃₁.

sys1H= P₁H_process() ∣∣∣ P₂_process() ∣∣∣ P₃_process() ∣∣∣P₄_process();

#define goals1 (P₄_S1 ∣∣ P₃_S1 ∣∣ P₂_S1);

#define goals2 (P₁_S2 && P₁_S3 && P₁_S4);

#assert sys1H ∣= G ((goals1) -> F(goals2));