title: Solve a linear program in CPLEX without the cuts and preprocessing
body: <p>I'm willing to solve the linear relaxation of an ILP model I have.<br>
  Thus, I set all of my <code>{0,1}</code> variables as <code>IloNumVar</code> and called the function <code>solve()</code> of CPLEX.</p>
  
  <p>However, this call solves the root node performing a costly preprocessing and inserting a lot of cuts, but all I want to do is to get the solution of the linear relaxation of my model.</p>
  
  <p>I set all of the above parameters. However, the linear relaxation is not solved fastly enough due to the CPLEX preprocessing.</p>
  
  <pre class="lang-cpp prettyprint-override"><code>cplex-&gt;setParam(IloCplex::Cliques, -1);
  cplex-&gt;setParam(IloCplex::Covers, -1);
  cplex-&gt;setParam(IloCplex::DisjCuts, -1);
  cplex-&gt;setParam(IloCplex::FlowCovers, -1);
  cplex-&gt;setParam(IloCplex::FlowPaths, -1);
  cplex-&gt;setParam(IloCplex::GUBCovers, -1);
  cplex-&gt;setParam(IloCplex::ImplBd, -1);
  cplex-&gt;setParam(IloCplex::MIRCuts, -1);
  cplex-&gt;setParam(IloCplex::FracCuts, -1);
  cplex-&gt;setParam(IloCplex::ZeroHalfCuts, -1);
  </code></pre>
  
  <hr>
  
  <p>How can I get rid of this preprocessing and obtain the solution of the linear relaxation only?</p>