Executed:

daffodil --debug parse --schema syslog.dfdl.xsd ex_log.log

(debug) info infoset

edu.illinois.ncsa.daffodil.exceptions.Abort: Invariant broken. Runtime.scala - Leaked exception: java.lang.AssertionError: assertion failed
edu.illinois.ncsa.daffodil.exceptions.Assert$.abort(Assert.scala:146)
edu.illinois.ncsa.daffodil.exceptions.Assert$.invariantFailed(Assert.scala:192)
edu.illinois.ncsa.daffodil.processors.DataProcessor.edu$illinois$ncsa$daffodil$processors$DataProcessor$$doParse(Runtime.scala:281)
edu.illinois.ncsa.daffodil.processors.DataProcessor$$anonfun$parse$1.apply(Runtime.scala:208)
at edu.illinois.ncsa.daffodil.exceptions.Assert$.abort(Assert.scala:146)
at edu.illinois.ncsa.daffodil.exceptions.Assert$.invariantFailed(Assert.scala:192)
at edu.illinois.ncsa.daffodil.processors.DataProcessor.edu$illinois$ncsa$daffodil$processors$DataProcessor$$doParse(Runtime.scala:281)
at edu.illinois.ncsa.daffodil.processors.DataProcessor$$anonfun$parse$1.apply(Runtime.scala:208)
at edu.illinois.ncsa.daffodil.processors.DataProcessor$$anonfun$parse$1.apply(Runtime.scala:200)
at scala.util.DynamicVariable.withValue(DynamicVariable.scala:58)
at edu.illinois.ncsa.daffodil.ExecutionMode$$anonfun$usingRuntimeMode$1.apply(ExecutionMode.scala:80)
at edu.illinois.ncsa.daffodil.ExecutionMode$$anonfun$usingRuntimeMode$1.apply(ExecutionMode.scala:80)
at edu.illinois.ncsa.daffodil.processors.DataProcessor.parse(Runtime.scala:200)
at edu.illinois.ncsa.daffodil.processors.DataProcessor.parse(Runtime.scala:183)
at edu.illinois.ncsa.daffodil.Main$$anonfun$73.apply(Main.scala:865)
at edu.illinois.ncsa.daffodil.Main$$anonfun$73.apply(Main.scala:863)
at edu.illinois.ncsa.daffodil.util.Timer$.getTimeResult(Timer.scala:91)
at edu.illinois.ncsa.daffodil.util.Timer$.getResult(Timer.scala:50)
at edu.illinois.ncsa.daffodil.Main$.run(Main.scala:863)
at edu.illinois.ncsa.daffodil.Main$.main(Main.scala:1309)
at edu.illinois.ncsa.daffodil.Main.main(Main.scala)