Heap corruption: What could the cause be?

Question

I am investigating a crash due to heap corruption. As this issue is non-trivial and involves analyzing the stack and dump results, I have decided to do a code review of file

Answer 1

During freeing heap memory, first child memory block need to be deleted and then parant memory block otherwise the child momory block would be leaked parmanently which causes the crash after running the tool millions of times.. ex:

constQ= new double* [num_equations];
for(int i=0;i