SymbolicAddressMap { @Override public int hashCode() { if(isTop()) return 1; else return 2 + 31 * mapP.hashCode() + mapA.hashCode(); } SymbolicAddressMap(BoundedSetFactory<SymbolicAddress> bsFactory); private  SymbolicAddressMap(BoundedSetFactory<SymbolicAddress> bsFactory,
							   HashMap<Location,BoundedSet<SymbolicAddress>> initP,
							   HashMap<String,BoundedSet<SymbolicAddress>> initA); boolean isTop(); static SymbolicAddressMap top(); @Override int hashCode(); @Override boolean equals(Object obj); boolean isSubset(SymbolicAddressMap other); SymbolicAddressMap cloneFilterStack(int bound); SymbolicAddressMap cloneInvoke(int framePtr); void addStackUpto(SymbolicAddressMap in, int bound); void join(SymbolicAddressMap b); void joinReturned(SymbolicAddressMap returned, int framePtr); void copyStack(SymbolicAddressMap in, int dst, int src); BoundedSet<SymbolicAddress> getStack(int index); void putStack(int index, BoundedSet<SymbolicAddress> bs); BoundedSet<SymbolicAddress> getHeap(String staticfield); void putHeap(String staticfield, BoundedSet<SymbolicAddress> pointers); void put(Location l, BoundedSet<SymbolicAddress> bs); void addAlias(String ty, BoundedSet<SymbolicAddress> newAliases); BoundedSet<SymbolicAddress> getAliases(String fieldType); void print(PrintStream out, int indent); @Override String toString();  }
@Test public void testHashCode() { assert(map1().hashCode() == map1().hashCode()); assert(map1().hashCode() != map2().hashCode()); assert(map1().hashCode() != SymbolicAddressMap.top().hashCode()); assert(map2().hashCode() == map2().hashCode()); assert(map2().hashCode() != SymbolicAddressMap.top().hashCode()); assert(SymbolicAddressMap.top().hashCode() == SymbolicAddressMap.top().hashCode()); }