Unable to create DataPropertyAssertion with OWL API - owl-api

Question

CODE:
OWLDataProperty prop = factory.getOWLDataProperty(IRI.create(getOntologyIRI() + "#" + owlDataProp));
OWLNamedIndividual ind = factory.getOWLNamedIndividual(IRI.create(getOntologyIRI() + "#" + owlNamedIndividual));
OWLLiteral lit = factory.getOWLLiteral(val);
OWLDataPropertyAssertionAxiom axiom = factory.getOWLDataPropertyAssertionAxiom(prop, ind, lit);
if(manager.addAxiom(this.ontology, axiom) == ChangeApplied.SUCCESSFULLY)
return saveOntology();
return false;
creates:
and
But expected result is (manually created):
I try to create OWLNegativeDataPropertyAssertionAxiom and it works fine. Also if I create getOWLNegativeDataPropertyAssertionAxiom first and then create OWLDataPropertyAssertionAxiom - it works.
OWLAPI: owlapi-distribution-4.1.4.jar
EDIT:
Created ontologies:
<?xml version="1.0"?>
<rdf:RDF xmlns="gunkoFB.owl#"
xml:base="gunkoFB.owl"
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:owl="http://www.w3.org/2002/07/owl#"
xmlns:xml="http://www.w3.org/XML/1998/namespace"
xmlns:xsd="http://www.w3.org/2001/XMLSchema#"
xmlns:gunkoFB="gunkoFB.owl#"
xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#">
<owl:Ontology rdf:about="gunkoFB.owl"/>
<owl:DatatypeProperty rdf:about="gunkoFB.owl#hasFirstName"/>
<owl:NamedIndividual rdf:about="gunkoFB.owl#Michal_Joštiak">
<hasFirstName rdf:datatype="http://www.w3.org/2001/XMLSchema#string">Michal</hasFirstName>
</owl:NamedIndividual>
<?xml version="1.0"?>
<rdf:RDF xmlns="gunkoFB.owl#"
xml:base="gunkoFB.owl"
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:owl="http://www.w3.org/2002/07/owl#"
xmlns:xml="http://www.w3.org/XML/1998/namespace"
xmlns:xsd="http://www.w3.org/2001/XMLSchema#"
xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#">
<owl:Ontology rdf:about="gunkoFB.owl"/>
<owl:DatatypeProperty rdf:about="gunkoFB.owl#hasFirstName"/>
<owl:NamedIndividual rdf:about="gunkoFB.owl#Michal_Joštiak"/>
<rdf:Description>
<rdf:type rdf:resource="http://www.w3.org/2002/07/owl#NegativePropertyAssertion"/>
<owl:sourceIndividual rdf:resource="gunkoFB.owl#Michal_Joštiak"/>
<owl:assertionProperty rdf:resource="gunkoFB.owl#hasFirstName"/>
<owl:targetValue rdf:datatype="http://www.w3.org/2001/XMLSchema#string">Michal</owl:targetValue>
</rdf:Description>

Answer 1

Looks like missed declarations. Can you try this with 4.2.5? There have been bugs fixed in this area in the last few versions.
Edit: after checking the code in the OWLAPI issue tracker, it turns out the issue is the ontology IRI, which needs to be absolute. The relative IRI means that, when saving to a file, the file location is used to disambiguate the declaration IRIs; however this is not done uniformly, causing missed declarations - which is the root issue.
As a workaround while the bug is fixed, use absolute IRIs for the ontology IRI.