private string ArrayOffsetString(Model Model, string StateName, Variable AccessHasOccurredVar, Variable AccessOffsetVar, string RaceyArraySourceName)
{
Model.Number OffsetElement = (RaceInstrumentationUtil.RaceCheckingMethod == RaceCheckingMethod.ORIGINAL
? GetStateFromModel(StateName, Model).TryGet(AccessOffsetVar.Name)
: Model.TryGetFunc(AccessOffsetVar.Name).GetConstant()) as Model.Number;
return(GetArrayAccess(ParseOffset(OffsetElement), RaceyArraySourceName,
Convert.ToUInt32(QKeyValue.FindIntAttribute(AccessHasOccurredVar.Attributes, "elem_width", -1)),
Convert.ToUInt32(QKeyValue.FindIntAttribute(AccessHasOccurredVar.Attributes, "source_elem_width", -1)),
QKeyValue.FindStringAttribute(AccessHasOccurredVar.Attributes, "source_dimensions").Split(',')));
}
private long ParseOffset(Model.Number modelOffset)
{
ulong offset = Convert.ToUInt64(modelOffset.Numeral);
if (offset >= BigInteger.Pow(2, size_t_bits - 1))
{
return((long)(offset - BigInteger.Pow(2, size_t_bits)));
}
else
{
return((long)offset);
}
}
private void ReportFailingArrayBounds(AssertCounterexample err)
{
PopulateModelWithStatesIfNecessary(err);
string state = GetStateName(err);
string arrayName = QKeyValue.FindStringAttribute(err.FailingAssert.Attributes, "array_name");
Model.Number ArrayOffset = GetStateFromModel(state, err.Model).TryGet("_ARRAY_OFFSET_" + arrayName) as Model.Number;
Axiom arrayInfo = GetOriginalProgram().Axioms.Where(Item => QKeyValue.FindStringAttribute(Item.Attributes, "array_info") == arrayName).ElementAt(0);
string arrayAccess = GetArrayAccess(ParseOffset(ArrayOffset),
QKeyValue.FindStringAttribute(arrayInfo.Attributes, "source_name"),
Convert.ToUInt32(QKeyValue.FindIntAttribute(arrayInfo.Attributes, "elem_width", -1)),
Convert.ToUInt32(QKeyValue.FindIntAttribute(arrayInfo.Attributes, "source_elem_width", -1)),
QKeyValue.FindStringAttribute(arrayInfo.Attributes, "source_dimensions").Split(','));
var sli = new SourceLocationInfo(GetAttributes(err.FailingAssert), GetSourceFileName(), err.FailingAssert.tok);
ErrorWriteLine(sli.Top() + ":", "possible array out-of-bounds access on array " + arrayAccess +
" by " + ThreadDetails(err.Model, 2, false) + ":",
ErrorMsgType.Error);
sli.PrintStackTrace();
Console.Error.WriteLine();
}
