Can you please install "gdb", and then retry with the following (on the shell):

export USE_ZEND_ALLOC=0
gdb --args /usr/local/Cellar/php71/7.1.0-rc.1_4/bin/php -dxdebug.remote_enable=1 -dxdebug.remote_mode=req -dxdebug.remote_port=9001 -dxdebug.remote_host=127.0.0.1 /Volumes/Data/www/yii test/task-fill

And then in the GDB prompt:

run

And when it crashes/bails out, run:

bt full

And add the output as a file to this report.

Ping?

ok)

(Changing the status back to feedback until the requested info has been given)

run:
gdb --args /usr/local/Cellar/php71/7.1.0-rc.1_4/bin/php -dxdebug.remote_enable=1 -dxdebug.remote_mode=req -dxdebug.remote_port=9001 -dxdebug.remote_host=127.0.0.1 /Volumes/Data/www/me/taskfall.net/yii test/task-fill

output:
Reading symbols from /usr/local/Cellar/php71/7.1.0-rc.1_4/bin/php...(no debugging symbols found)...done.
(gdb)
(gdb) run
Starting program: /usr/local/Cellar/php71/7.1.0-rc.1_4/bin/php -dxdebug.remote_enable=1 -dxdebug.remote_mode=req -dxdebug.remote_port=9001 -dxdebug.remote_host=127.0.0.1 /Volumes/Data/www/me/taskfall.net/yii test/task-fill
[New Thread 0x1403 of process 34869]
warning: unhandled dyld version (15)
[Inferior 1 (process 34869) exited normally]
(gdb) bt full
No stack.
(gdb)

Without Breakpoints into php-script - run fine!
But if script has breakpoints - crashed!

I don't know how stay breakpoints in gdb in php-script

You should set the breakpoints in a similar way as you would normally do this. GDB does not come into play here, it is merely helpful for when the crash happens. If you enable the "listen for debugging connections in PhpStorm", then PhpStorm should allow you to set breakpoints as normal. Can you try that?

Ping?

I am closing this, as I can't reproduce this, and the requested feedback has not been given. Please feel free to reopen this if you can provide more information as requested.