<BUG>Integer c1Index = getOrCreateEqClassIndex(dfaVar);Integer c2Index = getOrCreateEqClassIndex(dfaNull);if (c1Index == null || c2Index == null) {</BUG><CONTEXT>public boolean isNotNull(DfaVariableValue dfaVar) {if (getVariableState(dfaVar).isNotNull()) {return true;}DfaConstValue dfaNull = myFactory.getConstFactory().getNull();<extra_id_0>return false;</CONTEXT>
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