The Sybase SQL ("jbpm.jpdl.sybase.sql") is not compatible with Sybase ASE 15.
The lines containing "go" are not required and cause errors:

Caused by: com.sybase.jdbc4.jdbc.SybSQLException: Stored procedure 'go' not found. Specify owner.objectname or use sp_help to check whether the object exists (sp_help may produce lots of output).

The fix is to remove all lines containing "go" from "jbpm.jpdl.sybase.sql".