ACL2 Seminar, 9/30/2014 Some Ideas about Managing State in Code Proofs J Moore Abstract: Two characteristics of ACL2 code proofs -- especially for realistic machine code models -- are the sizes of the symbolic state expressions produced by runs through long sequences of instructions and the predominance of arithmetic/logical expressions. In this talk I'll present some ideas for managing these problems in a theorem-proving context. This talk describes work in progress; I'll welcome brainstorming and be the first to admit that some of the ideas may be inadequate to the task!