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java.lang.NullPointerException: 	at proguard.evaluation.Variables.fload(Variables.java:245)	at proguard.evaluation.Processor.visitVariableInstruction(Processor.java:678)	at proguard.classfile.instruction.VariableInstruction.accept(VariableInstruction.java:306)	at proguard.optimize.evaluation.PartialEvaluator.evaluateSingleInstructionBlock(PartialEvaluator.java:761)	at proguard.optimize.evaluation.PartialEvaluator.evaluateInstructionBlock(PartialEvaluator.java:609)	at proguard.optimize.evaluation.PartialEvaluator.evaluateInstructionBlockAndExceptionHandlers(PartialEvaluator.java:567)	at proguard.optimize.evaluation.PartialEvaluator.visitCodeAttribute0(PartialEvaluator.java:271)	at proguard.optimize.evaluation.PartialEvaluator.visitCodeAttribute(PartialEvaluator.java:188)	at proguard.optimize.evaluation.LivenessAnalyzer.visitCodeAttribute(LivenessAnalyzer.java:205)	at proguard.optimize.evaluation.VariableOptimizer.visitCodeAttribute(VariableOptimizer.java:105)	at proguard.classfile.attribute.CodeAttribute.accept(CodeAttribute.java:101)	at proguard.classfile.ProgramMethod.attributesAccept(ProgramMethod.java:79)	at proguard.classfile.attribute.visitor.AllAttributeVisitor.visitProgramMember(AllAttributeVisitor.java:95)	at proguard.classfile.util.SimplifiedVisitor.visitProgramMethod(SimplifiedVisitor.java:92)	at proguard.classfile.ProgramMethod.accept(ProgramMethod.java:71)	at proguard.classfile.ProgramClass.methodsAccept(ProgramClass.java:516)	at proguard.classfile.visitor.AllMethodVisitor.visitProgramClass(AllMethodVisitor.java:47)	at proguard.classfile.ProgramClass.accept(ProgramClass.java:358)	at proguard.classfile.ClassPool.classesAccept(ClassPool.java:124)	at proguard.optimize.Optimizer.execute(Optimizer.java:954)	at proguard.ProGuard.optimize(ProGuard.java:328)	at proguard.ProGuard.execute(ProGuard.java:127)