Prove lemma
Prove lemma

uwplse/verdi,uwplse/verdi-raft,lolisa/verdi,DistributedComponents/verdi-chord,DistributedComponents/verdi-aggregation,uwplse/verdi-raft,DistributedComponents/verdi-chord,DistributedComponents/verdi-aggregation,uwplse/verdi-raft,uwplse/verdi-raft,DistributedComponents/verdi-aggregation,uwplse/verdi,lolisa/verdi,DistributedComponents/verdi-aggregation,uwplse/verdi-raft,DistributedComponents/verdi-chord,guiquanz/verdi,palmskog/verdi,DistributedComponents/verdi-chord,palmskog/verdi,palmskog/verdi,DistributedComponents/verdi-chord,guiquanz/verdi