[Soot-list] large memory consumption

[Fang Liu]

Hi, All,
I am using soot to do flow analysis. The program consumes lots of memory
(2GB) when processing a 100KB class with  CombinedDuAnalysis.v(unitgraph).

Does anyone know what combineDuAnalysis do in detail? Why it sometimes
consumes so much memory?

Below is the errors when the heapsize is 1GB.

Thank you.

Exception in thread "main" java.lang.OutOfMemoryError: Java heap space
        at
soot.toolkits.scalar.ArraySparseSet.doubleCapacity(ArraySparseSet.java:120)
        at soot.toolkits.scalar.ArraySparseSet.copy(ArraySparseSet.java:274)
        at
soot.toolkits.scalar.CombinedDUAnalysis.copy(CombinedDUAnalysis.java:261)
        at
soot.toolkits.scalar.BackwardFlowAnalysis.doAnalysis(BackwardFlowAnalysis.java:129)
        at
soot.toolkits.scalar.CombinedDUAnalysis.<init>(CombinedDUAnalysis.java:163)
        at
soot.toolkits.scalar.CombinedDUAnalysis.v(CombinedDUAnalysis.java:99)




Best,
Fang
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