"../../../../IR/Sil/index.html#type-instr">IR.Sil.instr</a> <span class="arrow">&#45;&gt;</span></span>
  <a href="Domain/index.html#type-t">Domain.t</a></span></code></div><div class="spec-doc"><p><code>exec_instr astate proc_data node idx instr</code> should usually return <code>astate'</code> such that <code>{astate} instr {astate'}</code> is a valid Hoare triple. In other words, <code>exec_instr</code> defines how executing an instruction from a given abstract state changes that state into a new one. Th