Fix #2697.

src/ifcopenshell-python/ifcopenshell/api/root/remove_product.py

@@ -76,7 +76,9 @@ class Usecase:
                 ifcopenshell.api.run("grid.remove_grid_axis", self.file, axis=axis)
 
         # TODO: remove object placement and other relationships
-        for inverse in self.file.get_inverse(self.settings["product"]):
+        ignored = set()
+        while inverses := set(self.file.get_inverse(self.settings["product"])) - ignored:
+            inverse = next(iter(inverses))
             if inverse.is_a("IfcRelDefinesByProperties"):
                 ifcopenshell.api.run(
                     "pset.remove_pset",
@@ -115,4 +117,6 @@ class Usecase:
                     self.file.remove(inverse)
             elif inverse.is_a("IfcRelConnectsPathElements"):
                 self.file.remove(inverse)
+            else:
+                ignored.add(inverse)
         self.file.remove(self.settings["product"])