minor change to improve reliability

coin-or · Jan 24, 2025 · 9d9fb28 · 9d9fb28
1 parent 989cc14
commit 9d9fb28
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Showing 3 changed files with 5 additions and 1 deletion.
diff --git a/src/CbcModel.cpp b/src/CbcModel.cpp
@@ -14804,7 +14804,8 @@ nPartiallyFixed %d , nPartiallyFixedBut %d , nUntouched %d\n",
         moreSpecialOptions2_ &= ~2;
       }
       // This is not correct - that way cutoff can go up if maximization
-      double direction = !modelFlipped() ? solver_->getObjSense() : 1.0;
+      double direction = !modelFlipped() ? solver_->getObjSense() : 1.0; 
+      cutoff += 0.001; // relax
       setCutoff(cutoff*direction);
       // change cutoff as constraint if wanted
       if (cutoffRowNumber_ >= 0) {

diff --git a/src/CbcSolver.cpp b/src/CbcSolver.cpp
@@ -2528,6 +2528,7 @@ int CbcMain1(std::deque<std::string> inputQueue, CbcModel &model,
               if (!mode) {
                  // switch off clique strengthening
                  clqstrMode = "off";
+		 cgraphMode = "off";
               }
               break;
             case CbcParam::HEURISTICSTRATEGY:

diff --git a/src/CbcStrategy.cpp b/src/CbcStrategy.cpp
@@ -154,6 +154,8 @@ void CbcStrategyDefault::setupCutGenerators(CbcModel &model)
   int nNodes = model.getMaximumNodes();
   if (nNodes >= 190000 && nNodes < 190064)
     genFlags = nNodes - 190000;
+#else
+  genFlags=0;
 #endif
 
   CglProbing generator1;