alt/test_combined_assignment_alt1.nit:22,3--9: Error: Method '+' doesn't exists in Object.
alt/test_combined_assignment_alt1.nit:27,3--9: Error: Method '+' doesn't exists in Object.
alt/test_combined_assignment_alt1.nit:28,3--10: Type error: expected Int, got Object
alt/test_combined_assignment_alt1.nit:48,1--8: Error: Method '+' doesn't exists in Object.