How to solve “Test case 'id:000002,orig:1.pdf' results in a timeout”？？？

[刘文]

I am testing a pdf viewer mupdf using AFL.

My steps are as follows：

cd afl-2.52b

make

sudo make install

export CC=/afl-2.52b/afl-gcc

cd mupdf

make

afl-fuzz -i in -o out /mupdf/build/release/mupdf-x11 @@

     The result is that only when the pdf file size of my test case is less than 1KB, can the test run normally. When the pdf file is larger than 1KB or even 800b or 900b, you will be prompted
“PROGRAM ABORT : Test case 'id:000002,orig:1.pdf' results in a timeout
Location : perform_ dry_ run(), afl-fuzz.c:2777”
    This is true even if I increase - t and - m.
    What is the problem? Is there a problem with my test steps or other aspects

    Please help me