Modelsim-Altera Simulation Error: Memory Allocation Failure

Hello kaz! I saw your reply to another thread regarding the same problem. I tried you suggestion, but the problem is still there. I understand that software level simulation is not comprehensive and testing in real hardware is the best. But at this moment I really need to get my design verified without a board. Would you please give me some other recommendations to try? In addition, do you know anything else that can run the post synthesis simulation? I know some software for transistor level synth and apr, but have little knowledge for FPGA level. Thank you!