title: How many variables can pyscipopt handle?/ How to deal with Warning: getSolObjVal cannot only be called in stage SOLVING without a valid solution?
body: <p>I am building a transportation optimization model with pyscipopt. It works on a small subset of the data but when I try to run the entire dataset the model throws this error when I use model.getObjVal():</p>
  <p>Warning: getSolObjVal cannot only be called in stage SOLVING without a valid solution (current stage: 10)</p>
  <p>I am trying to allocate ~about 80,000 customers to 90 branches while minimizing total distance and subjecting to branch size constraints.</p>
  <p>If the dataset is too big, are there any other ways that can solve my problem? Thank you!!</p>
  <p>Update:
  The warning shows up at stage 10 (SCIP_STAGE_SOLVED = 10, /**&lt; the problem was solved */)</p>
  <p><a href="https://i.stack.imgur.com/Ks4kO.png" rel="nofollow noreferrer">enter image description here</a></p>