AbstractMethodError when deploing on jboss

I inherited java 7 app in my company and was tasked to upgrade it to java 8 and deploy on new jboss servers. I build the app with java 8 with no problem, tried to deploy it, fixed some minor bugs but then AbstractMethodError appeared.

{"WFLYCTL0080: Failed services" => {"jboss.persistenceunit.\"gui-be-2.1.2.war#gui-be-pu\"" => "java.lang.AbstractMethodError

Caused by: java.lang.AbstractMethodError"}}

I read that either use same version on libs that are on Jboss or specify via jboss-deployment-structure.xml that use project libs. I tried to go with same versions approach, but had no luck.

The hibernate version I used is 5.3.14.Final. Same on jboss and in project poms.

Found some error logs in jboss:

(Caused by: java.lang.AbstractMethodError
at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:276)
at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build
  (SessionFactoryBuilderImpl.java:467)  
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build
  (EntityManagerFactoryBuilder Impl.java:939)
at org.jboss.as.jpa.hibernate5.TwoPhaseBootstrapImpl.build(TwoPhaseBootstrapImpl.java:44))

*Edit: In maven config I have this.

    <dependency>
        <groupId>org.springframework.data</groupId>
        <artifactId>spring-data-jpa</artifactId>
        <version>1.5.2.RELEASE</version>
    </dependency>
    <!-- MySQl connector -->
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>5.1.29</version>
        <scope>provided</scope>
    </dependency>
    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-core</artifactId>
        <version>5.3.14.Final</version>
    </dependency>
    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-validator</artifactId>
        <version>5.1.0.Final</version>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>org.hibernate.javax.persistence</groupId>
        <artifactId>hibernate-jpa-2.1-api</artifactId>
        <version>1.0.0.Final</version>
        <scope>provided</scope>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-web</artifactId>
        <version>4.3.15.RELEASE</version>
    </dependency>
    <dependency>
        <groupId>org.jboss.spec</groupId>
        <artifactId>jboss-javaee-6.0</artifactId>
        <type>pom</type>
        <scope>provided</scope>
    </dependency>
    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>4.11</version>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>org.jboss.arquillian.junit</groupId>
        <artifactId>arquillian-junit-container</artifactId>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>org.jboss.arquillian.extension</groupId>
        <artifactId>arquillian-persistence-impl</artifactId>
        <version>1.0.0.Alpha6</version>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>org.jboss.weld</groupId>
        <artifactId>weld-core</artifactId>
        <version>2.1.1.Final</version>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>org.apache.logging.log4j</groupId>
        <artifactId>log4j-1.2-api</artifactId>
    </dependency>
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-api</artifactId>
        <scope>provided</scope>
    </dependency>

Jboss version is: JBoss EAP 7.3.0.GA (WildFly Core 10.1.2.Final-redhat-00001)

The problem was due to a version mismatch between the libraries. One of dependencies(a company-private lib) used jadira lib.

Since Hibernate was excluded(as shown in pom), it was not present in dependency tree, but the code was built with different version of Hibernate. Upgrading this lib to a newer version resolved the AbstractMethodError.

    <dependency>
        <groupId>org.jadira.usertype</groupId>
        <artifactId>usertype.core</artifactId>
        <version>6.0.0.GA</version>
        <exclusions>
            <exclusion>
                <groupId>org.hibernate</groupId>
                <artifactId>hibernate-core</artifactId>
            </exclusion>
        </exclusions>
    </dependency>