execve("./ass1", ["./ass1", "nums.txt"], [/* 39 vars */]) = 0
brk(0)                                  = 0x8ec000
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1beec84000
access("/etc/ld.so.preload", R_OK)      = -1 ENOENT (No such file or directory)
open("/etc/ld.so.cache", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=72670, ...}) = 0
mmap(NULL, 72670, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f1beec72000
close(3)                                = 0
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)
open("/lib/x86_64-linux-gnu/libpthread.so.0", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\200l\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=135366, ...}) = 0
mmap(NULL, 2212904, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f1bee847000
mprotect(0x7f1bee85f000, 2093056, PROT_NONE) = 0
mmap(0x7f1beea5e000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x17000) = 0x7f1beea5e000
mmap(0x7f1beea60000, 13352, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f1beea60000
close(3)                                = 0
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)
open("/lib/x86_64-linux-gnu/libc.so.6", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\200\30\2\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=1815224, ...}) = 0
mmap(NULL, 3929304, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f1bee487000
mprotect(0x7f1bee63c000, 2097152, PROT_NONE) = 0
mmap(0x7f1bee83c000, 24576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1b5000) = 0x7f1bee83c000
mmap(0x7f1bee842000, 17624, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f1bee842000
close(3)                                = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1beec71000
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1beec70000
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1beec6f000
arch_prctl(ARCH_SET_FS, 0x7f1beec70700) = 0
mprotect(0x7f1bee83c000, 16384, PROT_READ) = 0
mprotect(0x7f1beea5e000, 4096, PROT_READ) = 0
mprotect(0x601000, 4096, PROT_READ)     = 0
mprotect(0x7f1beec86000, 4096, PROT_READ) = 0
munmap(0x7f1beec72000, 72670)           = 0
set_tid_address(0x7f1beec709d0)         = 4232
set_robust_list(0x7f1beec709e0, 0x18)   = 0
futex(0x7fff4b3eb0ec, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 1, NULL, 7f1beec70700) = -1 EAGAIN (Resource temporarily unavailable)
rt_sigaction(SIGRTMIN, {0x7f1bee84d750, [], SA_RESTORER|SA_SIGINFO, 0x7f1bee856cb0}, NULL, 8) = 0
rt_sigaction(SIGRT_1, {0x7f1bee84d7e0, [], SA_RESTORER|SA_RESTART|SA_SIGINFO, 0x7f1bee856cb0}, NULL, 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
getrlimit(RLIMIT_STACK, {rlim_cur=8192*1024, rlim_max=RLIM_INFINITY}) = 0
brk(0)                                  = 0x8ec000
brk(0x90d000)                           = 0x90d000
open("nums.txt", O_RDONLY)              = 3
rt_sigprocmask(SIG_BLOCK, ~[HUP INT QUIT ILL TRAP ABRT BUS ALRM STKFLT CHLD CONT STOP TTIN TTOU XFSZ IO RTMIN RT_1 RT_3 RT_6 RT_7 RT_8 RT_16 RT_17 RT_18 RT_19 RT_20 RT_21 RT_22 RT_23 RT_24 RT_25 RT_26 RT_27 RT_28 RT_29 RT_30 RT_31], NULL, 8) = 0
mmap(NULL, 8392704, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1bedc86000
mprotect(0x7f1bedc86000, 4096, PROT_NONE) = 0
clone(child_stack=0x7f1bee485ff0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tidptr=0x7f1bee4869d0, tls=0x7f1bee486700, child_tidptr=0x7f1bee4869d0) = 4233
mmap(NULL, 8392704, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1bed485000
mprotect(0x7f1bed485000, 4096, PROT_NONE) = 0
clone(child_stack=0x7f1bedc84ff0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tidptr=0x7f1bedc859d0, tls=0x7f1bedc85700, child_tidptr=0x7f1bedc859d0) = 4234
tgkill(4232, 4233, SIGUSR1)             = 0
rt_sigtimedwait([USR1 USR2], NULL, NULL, 8) = -1 EINTR (Interrupted system call)
rt_sigtimedwait([USR1 USR2], NULL, NULL, 8) = -1 EINTR (Interrupted system call)
rt_sigtimedwait([USR1 USR2], NULL, NULL, 8) = -1 EINTR (Interrupted system call)
rt_sigtimedwait([USR1 USR2], NULL, NULL, 8) = -1 EINTR (Interrupted system call)
rt_sigtimedwait([USR1 USR2], NULL, NULL, 8^C <unfinished ...>