fix problem by clearing variable pools?

examples/pomdp/01-pomdps.py

@@ -26,6 +26,8 @@ def example_parametric_models_01():
     else:
         import pycarl.gmp.formula
 
+    # Prevent curious side effects from earlier runs (for tests only)
+    pycarl.clear_pools()
     ###
     # How to apply an unknown FSC to obtain a pMC from a POMDP
     path = stormpy.examples.files.prism_pomdp_maze
@@ -68,9 +70,6 @@ def example_parametric_models_01():
     # apply the memory onto the POMDP to get the cartesian product
     pomdp = stormpy.pomdp.unfold_memory(pomdp, memory)
     # apply the unknown FSC to obtain a pmc from the POMDP
-    if False:
-        # Currently, this command is known to cause problems in combination with running some other tests. 
-        # While we are investigating, we do not run the code
     pmc = stormpy.pomdp.apply_unknown_fsc(pomdp, stormpy.pomdp.PomdpFscApplicationMode.simple_linear)
 
     export_pmc = False # Set to True to export the pMC as drn.