Trace 0:
  Transitions:
    'when treating unknown const char * from tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:27 as non-NULL'
    'when PyString_FromString() succeeds'
    'when treating unknown const char * from tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:27 as non-NULL'
    'when PyString_FromString() succeeds'
    'when PyString_Concat() succeeds (Py_DECREF() without deallocation on *LHS)'
    'returning'
  Return value:
    repr(): PointerToRegion(gcctype='struct PyObject *', loc=gcc.Location(file='tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c', line=32), region=RegionOnHeap('result of PyString_Concat', gcc.Location(file='tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c', line=32)))
    str(): (struct PyObject *)&RegionOnHeap('result of PyString_Concat', gcc.Location(file='tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c', line=32)) from tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:32
    r->ob_refcnt: refs: 1 owned
    r->ob_type: PointerToRegion(gcctype='struct PyTypeObject *', loc=gcc.Location(file='tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c', line=32), region=Region('PyTypeObject for result of PyString_Concat'))
  PyStringObject allocated at tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:29:
    repr(): RegionOnHeap('PyStringObject', gcc.Location(file='tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c', line=29))
    str(): PyStringObject allocated at tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:29
    r->ob_refcnt: refs: 0 owned
    r->ob_type: PointerToRegion(gcctype='struct PyTypeObject *', loc=gcc.Location(file='tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c', line=29), region=RegionForGlobal(gcc.VarDecl('PyString_Type')))
  PyStringObject allocated at tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:32:
    repr(): RegionOnHeap('PyStringObject', gcc.Location(file='tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c', line=32))
    str(): PyStringObject allocated at tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:32
    r->ob_refcnt: refs: 1 owned
    r->ob_type: PointerToRegion(gcctype='struct PyTypeObject *', loc=gcc.Location(file='tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c', line=32), region=RegionForGlobal(gcc.VarDecl('PyString_Type')))
  Exception:
    (struct PyObject *)0 from tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:28

Trace 1:
  Transitions:
    'when treating unknown const char * from tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:27 as non-NULL'
    'when PyString_FromString() succeeds'
    'when treating unknown const char * from tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:27 as non-NULL'
    'when PyString_FromString() succeeds'
    'when PyString_Concat() succeeds (Py_DECREF() with deallocation on *LHS)'
    'returning'
  Return value:
    repr(): PointerToRegion(gcctype='struct PyObject *', loc=gcc.Location(file='tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c', line=32), region=RegionOnHeap('result of PyString_Concat', gcc.Location(file='tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c', line=32)))
    str(): (struct PyObject *)&RegionOnHeap('result of PyString_Concat', gcc.Location(file='tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c', line=32)) from tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:32
    r->ob_refcnt: refs: 1 owned
    r->ob_type: PointerToRegion(gcctype='struct PyTypeObject *', loc=gcc.Location(file='tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c', line=32), region=Region('PyTypeObject for result of PyString_Concat'))
  PyStringObject allocated at tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:29:
    repr(): RegionOnHeap('PyStringObject', gcc.Location(file='tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c', line=29))
    str(): PyStringObject allocated at tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:29
    r->ob_refcnt: refs: 0 owned
    r->ob_type: PointerToRegion(gcctype='struct PyTypeObject *', loc=gcc.Location(file='tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c', line=29), region=RegionForGlobal(gcc.VarDecl('PyString_Type')))
  PyStringObject allocated at tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:32:
    repr(): RegionOnHeap('PyStringObject', gcc.Location(file='tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c', line=32))
    str(): PyStringObject allocated at tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:32
    r->ob_refcnt: refs: 1 owned
    r->ob_type: PointerToRegion(gcctype='struct PyTypeObject *', loc=gcc.Location(file='tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c', line=32), region=RegionForGlobal(gcc.VarDecl('PyString_Type')))
  Exception:
    (struct PyObject *)0 from tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:28

Trace 2:
  Transitions:
    'when treating unknown const char * from tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:27 as non-NULL'
    'when PyString_FromString() succeeds'
    'when treating unknown const char * from tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:27 as non-NULL'
    'when PyString_FromString() succeeds'
    'when PyString_Concat() fails (Py_DECREF() without deallocation on *LHS)'
    'returning'
  Return value:
    repr(): ConcreteValue(gcctype='struct PyObject *', loc=gcc.Location(file='tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c', line=32), value=0)
    str(): (struct PyObject *)0 from tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:32
  PyStringObject allocated at tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:29:
    repr(): RegionOnHeap('PyStringObject', gcc.Location(file='tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c', line=29))
    str(): PyStringObject allocated at tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:29
    r->ob_refcnt: refs: 0 owned
    r->ob_type: PointerToRegion(gcctype='struct PyTypeObject *', loc=gcc.Location(file='tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c', line=29), region=RegionForGlobal(gcc.VarDecl('PyString_Type')))
  PyStringObject allocated at tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:32:
    repr(): RegionOnHeap('PyStringObject', gcc.Location(file='tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c', line=32))
    str(): PyStringObject allocated at tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:32
    r->ob_refcnt: refs: 1 owned
    r->ob_type: PointerToRegion(gcctype='struct PyTypeObject *', loc=gcc.Location(file='tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c', line=32), region=RegionForGlobal(gcc.VarDecl('PyString_Type')))
  Exception:
    (struct PyObject *)&RegionForGlobal(gcc.VarDecl('PyExc_MemoryError')) from tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:32

Trace 3:
  Transitions:
    'when treating unknown const char * from tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:27 as non-NULL'
    'when PyString_FromString() succeeds'
    'when treating unknown const char * from tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:27 as non-NULL'
    'when PyString_FromString() succeeds'
    'when PyString_Concat() fails (Py_DECREF() with deallocation on *LHS)'
    'returning'
  Return value:
    repr(): ConcreteValue(gcctype='struct PyObject *', loc=gcc.Location(file='tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c', line=32), value=0)
    str(): (struct PyObject *)0 from tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:32
  PyStringObject allocated at tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:29:
    repr(): RegionOnHeap('PyStringObject', gcc.Location(file='tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c', line=29))
    str(): PyStringObject allocated at tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:29
    r->ob_refcnt: refs: 0 owned
    r->ob_type: PointerToRegion(gcctype='struct PyTypeObject *', loc=gcc.Location(file='tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c', line=29), region=RegionForGlobal(gcc.VarDecl('PyString_Type')))
  PyStringObject allocated at tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:32:
    repr(): RegionOnHeap('PyStringObject', gcc.Location(file='tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c', line=32))
    str(): PyStringObject allocated at tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:32
    r->ob_refcnt: refs: 1 owned
    r->ob_type: PointerToRegion(gcctype='struct PyTypeObject *', loc=gcc.Location(file='tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c', line=32), region=RegionForGlobal(gcc.VarDecl('PyString_Type')))
  Exception:
    (struct PyObject *)&RegionForGlobal(gcc.VarDecl('PyExc_MemoryError')) from tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:32

Trace 4:
  Transitions:
    'when treating unknown const char * from tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:27 as non-NULL'
    'when PyString_FromString() succeeds'
    'when treating unknown const char * from tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:27 as non-NULL'
    'when PyString_FromString() fails'
    'when PyString_Concat() cleans up due to NULL right-hand side (Py_DECREF() without deallocation on *LHS)'
    'returning'
  Return value:
    repr(): ConcreteValue(gcctype='struct PyObject *', loc=gcc.Location(file='tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c', line=32), value=0)
    str(): (struct PyObject *)0 from tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:32
  PyStringObject allocated at tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:29:
    repr(): RegionOnHeap('PyStringObject', gcc.Location(file='tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c', line=29))
    str(): PyStringObject allocated at tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:29
    r->ob_refcnt: refs: 0 owned
    r->ob_type: PointerToRegion(gcctype='struct PyTypeObject *', loc=gcc.Location(file='tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c', line=29), region=RegionForGlobal(gcc.VarDecl('PyString_Type')))
  Exception:
    (struct PyObject *)&RegionForGlobal(gcc.VarDecl('PyExc_MemoryError')) from tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:32

Trace 5:
  Transitions:
    'when treating unknown const char * from tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:27 as non-NULL'
    'when PyString_FromString() succeeds'
    'when treating unknown const char * from tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:27 as non-NULL'
    'when PyString_FromString() fails'
    'when PyString_Concat() cleans up due to NULL right-hand side (Py_DECREF() with deallocation on *LHS)'
    'returning'
  Return value:
    repr(): ConcreteValue(gcctype='struct PyObject *', loc=gcc.Location(file='tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c', line=32), value=0)
    str(): (struct PyObject *)0 from tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:32
  PyStringObject allocated at tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:29:
    repr(): RegionOnHeap('PyStringObject', gcc.Location(file='tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c', line=29))
    str(): PyStringObject allocated at tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:29
    r->ob_refcnt: refs: 0 owned
    r->ob_type: PointerToRegion(gcctype='struct PyTypeObject *', loc=gcc.Location(file='tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c', line=29), region=RegionForGlobal(gcc.VarDecl('PyString_Type')))
  Exception:
    (struct PyObject *)&RegionForGlobal(gcc.VarDecl('PyExc_MemoryError')) from tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:32

Trace 6:
  Transitions:
    'when treating unknown const char * from tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:27 as non-NULL'
    'when PyString_FromString() succeeds'
    'when treating unknown const char * from tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:27 as NULL'
  error: NullPtrArgument()
  error: possibly calling PyString_FromString with NULL as argument 1 (msg1) at tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:32
  PyStringObject allocated at tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:29:
    repr(): RegionOnHeap('PyStringObject', gcc.Location(file='tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c', line=29))
    str(): PyStringObject allocated at tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:29
    r->ob_refcnt: refs: 1 owned
    r->ob_type: PointerToRegion(gcctype='struct PyTypeObject *', loc=gcc.Location(file='tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c', line=29), region=RegionForGlobal(gcc.VarDecl('PyString_Type')))
  Exception:
    (struct PyObject *)0 from tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:28

Trace 7:
  Transitions:
    'when treating unknown const char * from tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:27 as non-NULL'
    'when PyString_FromString() fails'
    'when treating unknown const char * from tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:27 as non-NULL'
    'when PyString_FromString() succeeds'
    'when PyString_Concat() does nothing due to NULL *lhs'
    'returning'
  Return value:
    repr(): ConcreteValue(gcctype='struct PyObject *', loc=gcc.Location(file='tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c', line=29), value=0)
    str(): (struct PyObject *)0 from tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:29
  PyStringObject allocated at tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:32:
    repr(): RegionOnHeap('PyStringObject', gcc.Location(file='tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c', line=32))
    str(): PyStringObject allocated at tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:32
    r->ob_refcnt: refs: 1 owned
    r->ob_type: PointerToRegion(gcctype='struct PyTypeObject *', loc=gcc.Location(file='tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c', line=32), region=RegionForGlobal(gcc.VarDecl('PyString_Type')))
  Exception:
    (struct PyObject *)&RegionForGlobal(gcc.VarDecl('PyExc_MemoryError')) from tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:29

Trace 8:
  Transitions:
    'when treating unknown const char * from tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:27 as non-NULL'
    'when PyString_FromString() fails'
    'when treating unknown const char * from tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:27 as non-NULL'
    'when PyString_FromString() fails'
    'when PyString_Concat() does nothing due to NULL *lhs'
    'returning'
  Return value:
    repr(): ConcreteValue(gcctype='struct PyObject *', loc=gcc.Location(file='tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c', line=29), value=0)
    str(): (struct PyObject *)0 from tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:29
  Exception:
    (struct PyObject *)&RegionForGlobal(gcc.VarDecl('PyExc_MemoryError')) from tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:32

Trace 9:
  Transitions:
    'when treating unknown const char * from tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:27 as non-NULL'
    'when PyString_FromString() fails'
    'when treating unknown const char * from tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:27 as NULL'
  error: NullPtrArgument()
  error: possibly calling PyString_FromString with NULL as argument 1 (msg1) at tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:32
  Exception:
    (struct PyObject *)&RegionForGlobal(gcc.VarDecl('PyExc_MemoryError')) from tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:29

Trace 10:
  Transitions:
    'when treating unknown const char * from tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:27 as NULL'
  error: NullPtrArgument()
  error: possibly calling PyString_FromString with NULL as argument 1 (msg0) at tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:29
  Exception:
    (struct PyObject *)0 from tests/cpychecker/refcounts/PyString_Concat/leak-of-rhs/input.c:28