Only generate IDICs when both upper- and lower-level solutions are in…

…tegral if useFractionalCuts is false
coin-or · Sep 9, 2024 · 4377871 · 4377871
1 parent bc356dc
commit 4377871
Showing 1 changed file with 5 additions and 4 deletions.
diff --git a/src/MibSCutGenerator.cpp b/src/MibSCutGenerator.cpp
@@ -6019,7 +6019,7 @@ MibSCutGenerator::generateConstraints(BcpsConstraintPool &conPool)
         numCuts += intersectionCuts(conPool, bS->optLowerSolutionOrd_, cutType);
      }
 
-     if (useImprovingDirectionIC == PARAM_ON){
+     if (useFractionalCuts && useImprovingDirectionIC == PARAM_ON){
         cutType = MibSIntersectionCutImprovingDirection;
         numCuts += intersectionCuts(conPool, bS->optLowerSolutionOrd_, cutType);
      }
@@ -6044,9 +6044,10 @@ MibSCutGenerator::generateConstraints(BcpsConstraintPool &conPool)
      //and should always be false (see BlisTreeNode.cpp)
      return (false);
 
-  }else if (bS->isLowerIntegral_ || useFractionalCuts ||
-            (useFractionalCutsRootOnly && localModel_->activeNode_->getDepth() == 0)){
-
+  }else if (bS->isLowerIntegral_ &&
+            (useFractionalCuts ||
+             (useFractionalCutsRootOnly &&
+              localModel_->activeNode_->getDepth() == 0))){
      if (useImprovingDirectionIC == PARAM_ON){
         cutType = MibSIntersectionCutImprovingDirection;
         numCuts += intersectionCuts(conPool, bS->optLowerSolutionOrd_, cutType);