Caused by: java.lang.NullPointerException
at org.apache.sysml.hops.ipa.FunctionCallGraph.removeFunctionCall(FunctionCallGraph.java:182)
at org.apache.sysml.hops.ipa.IPAPassEliminateDeadCode.findAndRemoveDeadCode(IPAPassEliminateDeadCode.java:83)
at org.apache.sysml.hops.ipa.IPAPassEliminateDeadCode.rewriteProgram(IPAPassEliminateDeadCode.java:57)
at org.apache.sysml.hops.ipa.InterProceduralAnalysis.analyzeProgram(InterProceduralAnalysis.java:207)
at org.apache.sysml.parser.DMLTranslator.rewriteHopsDAG(DMLTranslator.java:271)
at org.apache.sysml.api.DMLScript.execute(DMLScript.java:707)
at org.apache.sysml.api.DMLScript.executeScript(DMLScript.java:518)