Program: 82933
Project: 82933
Buggy source:
@Override public IValue resolve(MarkerList markers,IContext context){
  IType varType=this.variable.getType();
  IValue value=this.variable.getValue().resolve(markers,context);
  this.variable.setValue(value);
  if (value.valueTag() == IValue.RANGE_OPERATOR) {
    RangeOperator ro=(RangeOperator)value;
    IValue value1=ro.getFirstValue();
    IValue value2=ro.getLastValue();
    IType rangeType=ro.getElementType();
    if (varType == Types.UNKNOWN) {
      if (rangeType == Types.UNKNOWN) {
        rangeType=Types.combine(value1.getType(),value2.getType());
      }
      this.variable.setType(varType=rangeType);
      if (varType == Types.UNKNOWN) {
        markers.add(Markers.semantic(this.variable.getPosition(),"String_Node_Str",this.variable.getName()));
      }
    }
 else     if (rangeType != Types.UNKNOWN && !varType.isSuperTypeOf(rangeType)) {
      Marker marker=Markers.semantic(value1.getPosition(),"String_Node_Str");
      marker.addInfo(Markers.getSemantic("String_Node_Str",rangeType));
      marker.addInfo(Markers.getSemantic("String_Node_Str",varType));
      markers.add(marker);
    }
    RangeForStatement rfs=new RangeForStatement(this.position,this.variable,value1,value2,ro.isHalfOpen());
    rfs.resolveAction(this.action,markers,context);
    return rfs;
  }
  IType valueType=value.getType();
  if (valueType.isArrayType()) {
    if (varType == Types.UNKNOWN) {
      this.variable.setType(varType=valueType.getElementType());
      if (varType == Types.UNKNOWN) {
        markers.add(Markers.semantic(this.variable.getPosition(),"String_Node_Str",this.variable.getName()));
      }
    }
 else     if (!varType.isSuperTypeOf(valueType.getElementType())) {
      Marker marker=Markers.semantic(value.getPosition(),"String_Node_Str");
      marker.addInfo(Markers.getSemantic("String_Node_Str",valueType));
      marker.addInfo(Markers.getSemantic("String_Node_Str",varType));
      markers.add(marker);
    }
    ArrayForStatement afs=new ArrayForStatement(this.position,this.variable,valueType);
    afs.resolveAction(this.action,markers,context);
    return afs;
  }
  if (Types.ITERABLE.isSuperTypeOf(valueType)) {
    IType iterableType=valueType.resolveTypeSafely(IterableForStatement.ITERABLE_TYPE);
    if (varType == Types.UNKNOWN) {
      this.variable.setType(varType=iterableType);
      if (varType == Types.UNKNOWN) {
        markers.add(Markers.semantic(this.variable.getPosition(),"String_Node_Str",this.variable.getName()));
      }
    }
 else     if (!varType.isSuperTypeOf(iterableType)) {
      Marker m=Markers.semantic(value.getPosition(),"String_Node_Str");
      m.addInfo(Markers.getSemantic("String_Node_Str",iterableType));
      m.addInfo(Markers.getSemantic("String_Node_Str",varType));
      markers.add(m);
    }
    IterableForStatement ifs=new IterableForStatement(this.position,this.variable);
    ifs.resolveAction(this.action,markers,context);
    return ifs;
  }
  if (Types.STRING.isSuperTypeOf(valueType)) {
    if (varType == Types.UNKNOWN) {
      this.variable.setType(Types.CHAR);
    }
 else     if (!varType.classEquals(Types.CHAR)) {
      Marker marker=Markers.semantic(value.getPosition(),"String_Node_Str");
      marker.addInfo(Markers.getSemantic("String_Node_Str",varType));
      markers.add(marker);
    }
    StringForStatement sfs=new StringForStatement(this.position,this.variable);
    sfs.resolveAction(this.action,markers,context);
    return sfs;
  }
  Marker marker=Markers.semantic(this.variable.getPosition(),"String_Node_Str");
  marker.addInfo(Markers.getSemantic("String_Node_Str",varType));
  marker.addInfo(Markers.getSemantic("String_Node_Str",valueType));
  markers.add(marker);
  this.resolveAction(this.action,markers,context);
  return this;
}

Fixed version (ground truth):
@Override public IValue resolve(MarkerList markers,IContext context){
  IType varType=this.variable.getType();
  IValue value=this.variable.getValue().resolve(markers,context);
  this.variable.setValue(value);
  if (value.valueTag() == IValue.RANGE_OPERATOR) {
    RangeOperator ro=(RangeOperator)value;
    IValue value1=ro.getFirstValue();
    IValue value2=ro.getLastValue();
    IType rangeType=ro.getElementType();
    if (varType == Types.UNKNOWN) {
      if (rangeType == Types.UNKNOWN) {
        rangeType=Types.combine(value1.getType(),value2.getType());
      }
      this.variable.setType(varType=rangeType);
      if (varType == Types.UNKNOWN) {
        markers.add(Markers.semantic(this.variable.getPosition(),"String_Node_Str",this.variable.getName()));
      }
    }
 else     if (rangeType != Types.UNKNOWN && !varType.isSuperTypeOf(rangeType)) {
      Marker marker=Markers.semantic(value1.getPosition(),"String_Node_Str");
      marker.addInfo(Markers.getSemantic("String_Node_Str",rangeType));
      marker.addInfo(Markers.getSemantic("String_Node_Str",varType));
      markers.add(marker);
    }
    RangeForStatement rfs=new RangeForStatement(this.position,this.variable,value1,value2,ro.isHalfOpen());
    rfs.resolveAction(this.action,markers,context);
    return rfs;
  }
  IType valueType=value.getType();
  if (valueType.isArrayType()) {
    if (varType == Types.UNKNOWN) {
      this.variable.setType(varType=valueType.getElementType());
      if (varType == Types.UNKNOWN) {
        markers.add(Markers.semantic(this.variable.getPosition(),"String_Node_Str",this.variable.getName()));
      }
    }
 else     if (!varType.isSuperTypeOf(valueType.getElementType())) {
      Marker marker=Markers.semantic(value.getPosition(),"String_Node_Str");
      marker.addInfo(Markers.getSemantic("String_Node_Str",valueType));
      marker.addInfo(Markers.getSemantic("String_Node_Str",varType));
      markers.add(marker);
    }
    ArrayForStatement afs=new ArrayForStatement(this.position,this.variable,valueType);
    afs.resolveAction(this.action,markers,context);
    return afs;
  }
  if (Types.ITERABLE.isSuperTypeOf(valueType)) {
    final IType iterableType=valueType.resolveTypeSafely(IterableForStatement.ITERABLE_TYPE).getReturnType();
    if (varType == Types.UNKNOWN) {
      this.variable.setType(varType=iterableType);
      if (varType == Types.UNKNOWN) {
        markers.add(Markers.semantic(this.variable.getPosition(),"String_Node_Str",this.variable.getName()));
      }
    }
 else     if (!varType.isSuperTypeOf(iterableType)) {
      Marker m=Markers.semantic(value.getPosition(),"String_Node_Str");
      m.addInfo(Markers.getSemantic("String_Node_Str",iterableType));
      m.addInfo(Markers.getSemantic("String_Node_Str",varType));
      markers.add(m);
    }
    IterableForStatement ifs=new IterableForStatement(this.position,this.variable);
    ifs.resolveAction(this.action,markers,context);
    return ifs;
  }
  if (Types.STRING.isSuperTypeOf(valueType)) {
    if (varType == Types.UNKNOWN) {
      this.variable.setType(Types.CHAR);
    }
 else     if (!varType.classEquals(Types.CHAR)) {
      Marker marker=Markers.semantic(value.getPosition(),"String_Node_Str");
      marker.addInfo(Markers.getSemantic("String_Node_Str",varType));
      markers.add(marker);
    }
    StringForStatement sfs=new StringForStatement(this.position,this.variable);
    sfs.resolveAction(this.action,markers,context);
    return sfs;
  }
  Marker marker=Markers.semantic(this.variable.getPosition(),"String_Node_Str");
  marker.addInfo(Markers.getSemantic("String_Node_Str",varType));
  marker.addInfo(Markers.getSemantic("String_Node_Str",valueType));
  markers.add(marker);
  this.resolveAction(this.action,markers,context);
  return this;
}