Program: 4107
Project: 4107
Buggy source:
@Override public void collectSlowLineMarkers(@NotNull List<PsiElement> psiElements,@NotNull Collection<LineMarkerInfo> collection){
  if (psiElements.size() == 0) {
    return;
  }
  Project project=psiElements.get(0).getProject();
  if (!LaravelProjectComponent.isEnabled(project)) {
    return;
  }
  LazyVirtualFileTemplateResolver resolver=null;
  for (  PsiElement psiElement : psiElements) {
    if (psiElement instanceof PsiFile) {
      if (resolver == null)       resolver=new LazyVirtualFileTemplateResolver();
      collectTemplateFileRelatedFiles((PsiFile)psiElement,collection,resolver);
    }
 else     if (psiElement.getNode().getElementType() == BladeTokenTypes.SECTION_DIRECTIVE) {
      Pair<PsiElement,String> section=extractSectionParameter(psiElement);
      if (section != null) {
        if (resolver == null) {
          resolver=new LazyVirtualFileTemplateResolver();
        }
        collectOverwrittenSection(section.getFirst(),collection,section.getSecond(),resolver);
        collectImplementsSection(section.getFirst(),collection,section.getSecond(),resolver);
      }
    }
 else     if (psiElement.getNode().getElementType() == BladeTokenTypes.YIELD_DIRECTIVE) {
      Pair<PsiElement,String> section=extractSectionParameter(psiElement);
      if (section != null) {
        if (resolver == null) {
          resolver=new LazyVirtualFileTemplateResolver();
        }
        collectImplementsSection(section.getFirst(),collection,section.getSecond(),resolver);
      }
    }
 else     if (psiElement.getNode().getElementType() == BladeTokenTypes.STACK_DIRECTIVE) {
      Pair<PsiElement,String> section=extractSectionParameter(psiElement);
      if (section != null) {
        if (resolver == null) {
          resolver=new LazyVirtualFileTemplateResolver();
        }
        collectStackImplements(section.getFirst(),collection,section.getSecond(),resolver);
      }
    }
 else     if (psiElement.getNode().getElementType() == BladeTokenTypes.PUSH_DIRECTIVE) {
      Pair<PsiElement,String> section=extractSectionParameter(psiElement);
      if (section != null) {
        if (resolver == null) {
          resolver=new LazyVirtualFileTemplateResolver();
        }
        collectPushOverwrites(section.getFirst(),collection,section.getSecond());
      }
    }
 else     if (psiElement.getNode().getElementType() == BladeTokenTypes.SLOT_DIRECTIVE) {
      Pair<PsiElement,String> section=extractSectionParameter(psiElement);
      if (section != null) {
        if (resolver == null) {
          resolver=new LazyVirtualFileTemplateResolver();
        }
        collectSlotOverwrites(section.getFirst(),collection,section.getSecond(),resolver);
      }
    }
  }
}

Fixed version (ground truth):
@Override public void collectSlowLineMarkers(@NotNull List<PsiElement> psiElements,@NotNull Collection<LineMarkerInfo> lineMarkers){
  if (psiElements.size() == 0) {
    return;
  }
  Project project=psiElements.get(0).getProject();
  if (!LaravelProjectComponent.isEnabled(project)) {
    return;
  }
  LazyVirtualFileTemplateResolver resolver=null;
  for (  PsiElement psiElement : psiElements) {
    if (psiElement instanceof PsiFile) {
      if (resolver == null) {
        resolver=new LazyVirtualFileTemplateResolver();
      }
      lineMarkers.addAll(collectTemplateFileRelatedFiles((PsiFile)psiElement,resolver));
    }
 else     if (psiElement instanceof LeafPsiElement) {
      if (psiElement.getNode().getElementType() == BladeTokenTypes.SECTION_DIRECTIVE) {
        Pair<BladePsiDirectiveParameter,String> section=extractSectionParameter(psiElement);
        if (section != null) {
          if (resolver == null) {
            resolver=new LazyVirtualFileTemplateResolver();
          }
          lineMarkers.addAll(collectOverwrittenSection((LeafPsiElement)psiElement,section.getSecond(),resolver));
          lineMarkers.addAll(collectImplementsSection((LeafPsiElement)psiElement,section.getSecond(),resolver));
        }
      }
 else       if (psiElement.getNode().getElementType() == BladeTokenTypes.YIELD_DIRECTIVE) {
        Pair<BladePsiDirectiveParameter,String> section=extractSectionParameter(psiElement);
        if (section != null) {
          if (resolver == null) {
            resolver=new LazyVirtualFileTemplateResolver();
          }
          lineMarkers.addAll(collectImplementsSection((LeafPsiElement)psiElement,section.getSecond(),resolver));
        }
      }
 else       if (psiElement.getNode().getElementType() == BladeTokenTypes.STACK_DIRECTIVE) {
        Pair<BladePsiDirectiveParameter,String> section=extractSectionParameter(psiElement);
        if (section != null) {
          if (resolver == null) {
            resolver=new LazyVirtualFileTemplateResolver();
          }
          lineMarkers.addAll(collectStackImplements((LeafPsiElement)psiElement,section.getSecond(),resolver));
        }
      }
 else       if (psiElement.getNode().getElementType() == BladeTokenTypes.PUSH_DIRECTIVE) {
        Pair<BladePsiDirectiveParameter,String> section=extractSectionParameter(psiElement);
        if (section != null) {
          if (resolver == null) {
            resolver=new LazyVirtualFileTemplateResolver();
          }
          lineMarkers.addAll(collectPushOverwrites((LeafPsiElement)psiElement,section.getSecond()));
        }
      }
 else       if (psiElement.getNode().getElementType() == BladeTokenTypes.SLOT_DIRECTIVE) {
        Pair<BladePsiDirectiveParameter,String> section=extractSectionParameter(psiElement);
        if (section != null) {
          if (resolver == null) {
            resolver=new LazyVirtualFileTemplateResolver();
          }
          lineMarkers.addAll(collectSlotOverwrites((LeafPsiElement)psiElement,section.getFirst(),section.getSecond(),resolver));
        }
      }
    }
  }
}