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I am using SageMath version 7.2

sage: B = random_boolean_function(3)
sage: get_memory_usage()
732.5078125
sage: B.algebraic_normal_form()
x0*x1*x2 + x0*x1 + x0 + x2
sage: get_memory_usage()
743.53125
sage: B.algebraic_normal_form()
x0*x1*x2 + x0*x1 + x0 + x2
sage: get_memory_usage()
749.04296875
sage: B.algebraic_normal_form()
x0*x1*x2 + x0*x1 + x0 + x2
sage: get_memory_usage()
754.6875
sage: B.algebraic_normal_form()
x0*x1*x2 + x0*x1 + x0 + x2
sage: get_memory_usage()
760.19921875

After each ANF call the memory used is rising. Is this a memory leak?

I am using SageMath version 7.2

sage: B = random_boolean_function(3)
sage: get_memory_usage()
732.5078125
sage: B.algebraic_normal_form()
x0*x1*x2 + x0*x1 + x0 + x2
sage: get_memory_usage()
743.53125
sage: B.algebraic_normal_form()
x0*x1*x2 + x0*x1 + x0 + x2
sage: get_memory_usage()
749.04296875
sage: B.algebraic_normal_form()
x0*x1*x2 + x0*x1 + x0 + x2
sage: get_memory_usage()
754.6875
sage: B.algebraic_normal_form()
x0*x1*x2 + x0*x1 + x0 + x2
sage: get_memory_usage()
760.19921875

After each ANF call the memory used is rising. Is this a memory leak?

I am using SageMath version 7.27.2 (EDIT: I confirm the same behavior under Sage version 7.4)

sage: B = random_boolean_function(3)
sage: get_memory_usage()
732.5078125
sage: B.algebraic_normal_form()
x0*x1*x2 + x0*x1 + x0 + x2
sage: get_memory_usage()
743.53125
sage: B.algebraic_normal_form()
x0*x1*x2 + x0*x1 + x0 + x2
sage: get_memory_usage()
749.04296875
sage: B.algebraic_normal_form()
x0*x1*x2 + x0*x1 + x0 + x2
sage: get_memory_usage()
754.6875
sage: B.algebraic_normal_form()
x0*x1*x2 + x0*x1 + x0 + x2
sage: get_memory_usage()
760.19921875

After each ANF call the memory used is rising. Is this a memory leak?