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Proving the Correctness of Multiprocess Programs

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1 Author(s)
L. Lamport ; Massachusetts Computer Associates, Inc.

The inductive assertion method is generalized to permit formal, machine-verifiable proofs of correctness for multiprocess programs. Individual processes are represented by ordinary flowcharts, and no special synchronization mechanisms are assumed, so the method can be applied to a large class of multiprocess programs. A correctness proof can be designed together with the program by a hierarchical process of stepwise refinement, making the method practical for larger programs. The resulting proofs tend to be natural formalizations of the informal proofs that are now used.

Published in:

IEEE Transactions on Software Engineering  (Volume:SE-3 ,  Issue: 2 )