Trace 0: Transitions: 'when PyList_New() succeeds' 'taking False path' 'taking False path' 'taking True path' 'returning' Return value: repr(): PointerToRegion(gcctype='struct PyObject *', loc=gcc.Location(file='tests/cpychecker/refcounts/fold_conditional/input.c', line=26), region=RegionOnHeap('PyListObject', gcc.Location(file='tests/cpychecker/refcounts/fold_conditional/input.c', line=26))) str(): (struct PyObject *)&RegionOnHeap('PyListObject', gcc.Location(file='tests/cpychecker/refcounts/fold_conditional/input.c', line=26)) from tests/cpychecker/refcounts/fold_conditional/input.c:26 r->ob_refcnt: refs: 1 + N where N >= 0 r->ob_type: PointerToRegion(gcctype='struct PyTypeObject *', loc=gcc.Location(file='tests/cpychecker/refcounts/fold_conditional/input.c', line=26), region=RegionForGlobal(gcc.VarDecl('PyList_Type'))) region for gcc.ParmDecl('self') on stack: repr(): RegionOnStack("region for gcc.ParmDecl('self')") str(): region for gcc.ParmDecl('self') on stack r->ob_refcnt: refs: 0 + N where N >= 1 r->ob_type: PointerToRegion(gcctype='struct PyTypeObject *', loc=gcc.Location(file='tests/cpychecker/refcounts/fold_conditional/input.c', line=23), region=Region("region-for-type-of-arg-gcc.ParmDecl('self')")) region for gcc.ParmDecl('args') on stack: repr(): RegionOnStack("region for gcc.ParmDecl('args')") str(): region for gcc.ParmDecl('args') on stack r->ob_refcnt: refs: 0 + N where N >= 1 r->ob_type: PointerToRegion(gcctype='struct PyTypeObject *', loc=gcc.Location(file='tests/cpychecker/refcounts/fold_conditional/input.c', line=23), region=Region("region-for-type-of-arg-gcc.ParmDecl('args')")) Exception: (struct PyObject *)0 from tests/cpychecker/refcounts/fold_conditional/input.c:24 Trace 1: Transitions: 'when PyList_New() fails' 'taking True path' 'returning' Return value: repr(): ConcreteValue(gcctype='struct PyObject *', loc=gcc.Location(file='tests/cpychecker/refcounts/fold_conditional/input.c', line=28), value=0) str(): (struct PyObject *)0 from tests/cpychecker/refcounts/fold_conditional/input.c:28 region for gcc.ParmDecl('self') on stack: repr(): RegionOnStack("region for gcc.ParmDecl('self')") str(): region for gcc.ParmDecl('self') on stack r->ob_refcnt: refs: 0 + N where N >= 1 r->ob_type: PointerToRegion(gcctype='struct PyTypeObject *', loc=gcc.Location(file='tests/cpychecker/refcounts/fold_conditional/input.c', line=23), region=Region("region-for-type-of-arg-gcc.ParmDecl('self')")) region for gcc.ParmDecl('args') on stack: repr(): RegionOnStack("region for gcc.ParmDecl('args')") str(): region for gcc.ParmDecl('args') on stack r->ob_refcnt: refs: 0 + N where N >= 1 r->ob_type: PointerToRegion(gcctype='struct PyTypeObject *', loc=gcc.Location(file='tests/cpychecker/refcounts/fold_conditional/input.c', line=23), region=Region("region-for-type-of-arg-gcc.ParmDecl('args')")) Exception: (struct PyObject *)&RegionForGlobal(gcc.VarDecl('PyExc_MemoryError')) from tests/cpychecker/refcounts/fold_conditional/input.c:26