Domain.t</a> <span>&#45;&gt;</span> <a href="index.html#type-analysis_data">analysis_data</a> <span>&#45;&gt;</span> <a href="CFG/Node/index.html#type-t">CFG.Node.t</a> <span>&#45;&gt;</span> <a href="index.html#type-instr">instr</a> <span>&#45;&gt;</span> <a href="Domain/index.html#type-t">Domain.t</a></code></dt><dd><p><code>exec_instr astate proc_data node instr</code> should usually return <code>astate'</code> such that <code>{astate} instr {astate'}</code> is a valid Hoare triple. In other words, <code