Trace 0:
  returned: ConcreteValue(gcctype='struct PyObject *', loc=gcc.Location(file='tests/cpychecker/refcounts/object_leak/input.c', line=29), value=0)
Trace 1:
  returned: ConcreteValue(gcctype='struct PyObject *', loc=gcc.Location(file='tests/cpychecker/refcounts/object_leak/input.c', line=29), value=0)
