Trace number 4120736

Some explanations

A solver is run under the control of another program named runsolver. runsolver is in charge of imposing the CPU time limit and the memory limit to the solver. It also monitors some information about the process. The trace of the execution of a solver is divided into four (or five) parts:
  1. SOLVER DATA
    This is the output of the solver (stdout and stderr).
    Note that some very long lines in this section may be truncated by your web browser ! In such a case, you may want to use the "Download as text" link to get the trace as a text file.

    When the --timestamp option is passed to the runsolver program, each line output by the solver is prepended with a timestamp which indicates at what time the line was output by the solver. Times are relative to the start of the program, given in seconds. The first timestamp (if present) is estimated CPU time. The last timestamp is wall clock time.

    As some 'v lines' may be very long (sometimes several megabytes), the 'v line' output by your solver may be split on several lines to help limit the size of the trace recorded in the database. In any case, the exact output of your solver is preserved in a trace file.
  2. VERIFIER DATA
    The output of the solver is piped to a verifier program which will search a value line "v " and, if found, will check that the given interpretation satisfies all constraints.
  3. CONVERSION SCRIPT DATA (Optionnal)
    When a conversion script is used, this section shows the messages that were output by the conversion script.
  4. WATCHER DATA
    This is the informations gathered by the runsolver program. It first prints the different limits. There's a first limit on CPU time set to X seconds (see the parameters in the trace). After this time has ellapsed, runsolver sends a SIGTERM and 2 seconds later a SIGKILL to the solver. For safety, there's also another limit set to X+30 seconds which will send a SIGXPU to the solver. The last limit is on the virtual memory used by the process (see the parameters in the trace).
    Every ten seconds, the runsolver process fetches the content of /proc/loadavg, /proc/pid/stat and /proc/pid/statm (see man proc) and prints it as raw data. This is only recorded in case we need to investigate the behaviour of a solver. The memory used by the solver (vsize) is also given every ten seconds.
    When the solver exits, runsolver prints some informations such as status and time. CPU usage is the ratio CPU Time/Real Time.
  5. LAUNCHER DATA
    These informations are related to the script which will launch the solver. The most important informations are the command line given to the solver, the md5sum of the different files and the dump of the /proc/cpuinfo and /proc/meminfo which provides some useful information on the computer.

Solver answer on this benchmark

Solver NameAnswerCPU timeWall clock time
cdcl-cuttingplanes DEC 2016-05-01UNSAT 0.383941 0.383746

General information on the benchmark

NamePB15eval/normalized-PB15eval/DEC-SMALLINT-LIN/ProofComplexity-Extracted-Cardinality-Constraints/
ProofComplexity/normalized-tseitin-regular-n54-d3-i1-r1.cnf.gz-plain.pb.metafix.opb
MD5SUMcf5bca21cd7b00f665c291e01c6c8eaa
Bench CategoryDEC-SMALLINT-LIN (no optimisation, small integers, linear constraints)
Best result obtained on this benchmarkUNSAT
Best value of the objective obtained on this benchmark
Best CPU time to get the best result obtained on this benchmark0.283956
Has Objective FunctionNO
Satisfiable
(Un)Satisfiability was proved
Best value of the objective function
Optimality of the best value was proved
Number of variables81
Total number of constraints216
Number of constraints which are clauses216
Number of constraints which are cardinality constraints (but not clauses)0
Number of constraints which are nor clauses,nor cardinality constraints0
Minimum length of a constraint3
Maximum length of a constraint3
Number of terms in the objective function 0
Biggest coefficient in the objective function 0
Number of bits for the biggest coefficient in the objective function 0
Sum of the numbers in the objective function 0
Number of bits of the sum of numbers in the objective function 0
Biggest number in a constraint 2
Number of bits of the biggest number in a constraint 2
Biggest sum of numbers in a constraint 5
Number of bits of the biggest sum of numbers3
Number of products (including duplicates)0
Sum of products size (including duplicates)0
Number of different products0
Sum of products size0

Solver Data 

0.00/0.00	c * #variable= 81 #constraint= 216
0.00/0.02	c #Conflicts:       1000 | #Learnt:        999 | 0.000
0.00/0.02	c total clause space: 4.25031MB
0.00/0.02	c total #watches: 2430
0.00/0.04	c total #propagations: 13177 / total #impl: 39269 (eff. 0.336)
0.00/0.04	c #Conflicts:       2000 | #Learnt:       1999 | 0.000
0.00/0.04	c total clause space: 4.25031MB
0.00/0.04	c total #watches: 4430
0.00/0.06	c total #propagations: 24158 / total #impl: 73182 (eff. 0.330)
0.00/0.06	c GARBAGE COLLECT
0.00/0.06	c #Conflicts:       3000 | #Learnt:       2005 | 0.000
0.00/0.06	c total clause space: 4.25031MB
0.00/0.06	c total #watches: 4442
0.00/0.08	c total #propagations: 35628 / total #impl: 108180 (eff. 0.329)
0.00/0.08	c #Conflicts:       4000 | #Learnt:       3005 | 0.000
0.00/0.08	c total clause space: 4.25031MB
0.00/0.08	c total #watches: 6442
0.00/0.10	c total #propagations: 44655 / total #impl: 137741 (eff. 0.324)
0.00/0.10	c GARBAGE COLLECT
0.00/0.10	c #Conflicts:       5000 | #Learnt:       2357 | 0.000
0.00/0.10	c total clause space: 4.25031MB
0.00/0.10	c total #watches: 5146
0.00/0.12	c total #propagations: 52388 / total #impl: 163778 (eff. 0.320)
0.00/0.12	c #Conflicts:       6000 | #Learnt:       3357 | 0.000
0.00/0.12	c total clause space: 4.25031MB
0.00/0.12	c total #watches: 7146
0.00/0.15	c total #propagations: 59963 / total #impl: 189607 (eff. 0.316)
0.00/0.15	c GARBAGE COLLECT
0.00/0.15	c #Conflicts:       7000 | #Learnt:       2232 | 0.000
0.00/0.15	c total clause space: 4.25031MB
0.00/0.15	c total #watches: 4896
0.00/0.17	c total #propagations: 68258 / total #impl: 221464 (eff. 0.308)
0.00/0.17	c #Conflicts:       8000 | #Learnt:       3232 | 0.000
0.00/0.17	c total clause space: 4.25031MB
0.00/0.17	c total #watches: 6896
0.00/0.19	c total #propagations: 76355 / total #impl: 252739 (eff. 0.302)
0.00/0.19	c #Conflicts:       9000 | #Learnt:       4232 | 0.000
0.00/0.19	c total clause space: 4.25031MB
0.00/0.19	c total #watches: 8896
0.00/0.21	c total #propagations: 84339 / total #impl: 279050 (eff. 0.302)
0.00/0.21	c GARBAGE COLLECT
0.00/0.21	c #Conflicts:      10000 | #Learnt:       2719 | 0.000
0.00/0.21	c total clause space: 4.25031MB
0.00/0.21	c total #watches: 5870
0.00/0.23	c total #propagations: 91532 / total #impl: 303768 (eff. 0.301)
0.00/0.23	c #Conflicts:      11000 | #Learnt:       3719 | 0.000
0.00/0.23	c total clause space: 4.25031MB
0.00/0.23	c total #watches: 7870
0.00/0.25	c total #propagations: 98705 / total #impl: 330752 (eff. 0.298)
0.00/0.25	c #Conflicts:      12000 | #Learnt:       4719 | 0.000
0.00/0.25	c total clause space: 4.25031MB
0.00/0.25	c total #watches: 9870
0.00/0.28	c total #propagations: 107867 / total #impl: 363134 (eff. 0.297)
0.00/0.28	c #Conflicts:      13000 | #Learnt:       5719 | 0.000
0.00/0.28	c total clause space: 4.25031MB
0.00/0.28	c total #watches: 11870
0.00/0.30	c total #propagations: 113514 / total #impl: 385636 (eff. 0.294)
0.00/0.30	c GARBAGE COLLECT
0.00/0.30	c #Conflicts:      14000 | #Learnt:       3863 | 0.000
0.00/0.30	c total clause space: 4.25031MB
0.00/0.30	c total #watches: 8158
0.00/0.32	c total #propagations: 121335 / total #impl: 414141 (eff. 0.293)
0.00/0.32	c #Conflicts:      15000 | #Learnt:       4863 | 0.000
0.00/0.32	c total clause space: 4.25031MB
0.00/0.32	c total #watches: 10158
0.00/0.34	c total #propagations: 127822 / total #impl: 439639 (eff. 0.291)
0.00/0.34	c #Conflicts:      16000 | #Learnt:       5863 | 0.000
0.00/0.34	c total clause space: 4.25031MB
0.00/0.34	c total #watches: 12158
0.00/0.36	c total #propagations: 133240 / total #impl: 462779 (eff. 0.288)
0.00/0.36	c GARBAGE COLLECT
0.00/0.36	c #Conflicts:      17000 | #Learnt:       3687 | 0.000
0.00/0.36	c total clause space: 4.25031MB
0.00/0.36	c total #watches: 7806
0.00/0.37	c total #propagations: 137902 / total #impl: 480513 (eff. 0.287)
0.00/0.37	c #Conflicts:      18000 | #Learnt:       4685 | 0.000
0.00/0.37	c total clause space: 4.25031MB
0.00/0.37	c total #watches: 9802
0.00/0.38	c total #propagations: 142788 / total #impl: 499515 (eff. 0.286)
0.00/0.38	c UNSATISFIABLE 1
0.00/0.38	c CPU time              : 0.375942 s
0.00/0.38	d decisions 18295
0.00/0.38	d conflicts 23985
0.00/0.38	s UNSATISFIABLE

Verifier Data 

ERROR: no interpretation found !

Watcher Data 

runsolver Copyright (C) 2010-2013 Olivier ROUSSEL

This is runsolver version 3.3.7 (svn: 2553)

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-4120736-1467308561/watcher-4120736-1467308561 -o /tmp/evaluation-result-4120736-1467308561/solver-4120736-1467308561 -C 1800 -W 1900 -M 15500 --bin-var /tmp/runsolver-exch-node131-1467308290-16388 --watchdog 1960 --input HOME/instance-4120736-1467308561.opb ./cdcl-cuttingplanes-release 

pid=16882
running on 4 cores: 0,2,4,6

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1800 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1830 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 1900 seconds
Enforcing VSIZE limit (soft limit, will send SIGTERM then SIGKILL): 15872000 KiB
Enforcing VSIZE limit (hard limit, stack expansion will fail with SIGSEGV, brk() and mmap() will return ENOMEM): 15923200 KiB
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 2.44 2.09 1.70 2/176 16885
/proc/meminfo: memFree=30313084/32872528 swapFree=1199948/1314412
[pid=16885] ppid=16882 vsize=29104 CPUtime=0 cores=0,2,4,6
/proc/16885/stat : 16885 (cdcl-cuttingpla) R 16882 16885 16372 0 -1 4202496 269 0 0 0 0 0 0 0 20 0 1 0 9878018 29802496 5260 33554432000 4194304 6199737 140733655522640 140734107341064 4209412 0 0 4096 8388610 0 0 0 17 2 0 0 0 0 0
/proc/16885/statm: 7276 5260 122 490 0 6777 0

Solver just ended.
??? exit watcher main loop
??? sigkill at end of watcher main loop
??? kill 16885 sig 9
??? kill -16885 sig 9
??? end of watcher thread
Dumping a history of the last processes samples

Child status: 20
Real time (s): 0.383746
CPU time (s): 0.383941
CPU user time (s): 0.377942
CPU system time (s): 0.005999
CPU usage (%): 100.051
Max. virtual memory (cumulated for all children) (KiB): 0

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.377942
system time used= 0.005999
maximum resident set size= 29616
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 1152
page faults= 0
swaps= 0
block input operations= 0
block output operations= 0
messages sent= 0
messages received= 0
signals received= 0
voluntary context switches= 3
involuntary context switches= 1

??? join timestamper begins
??? join timestamper ends
??? end of timestamper thread
runsolver used 0.001999 second user time and 0.009998 second system time

The end

Launcher Data 

Begin job on node131 at 2016-06-30 19:42:41
IDJOB=4120736
IDBENCH=110088
IDSOLVER=2548
FILE ID=node131/4120736-1467308561
RUNJOBID= node131-1467308290-16388
PBS_JOBID= 20005251
Free space on /tmp= 71732 MiB

SOLVER NAME= cdcl-cuttingplanes DEC 2016-05-01
BENCH NAME= PB15eval/normalized-PB15eval/DEC-SMALLINT-LIN/ProofComplexity-Extracted-Cardinality-Constraints/ProofComplexity/normalized-tseitin-regular-n54-d3-i1-r1.cnf.gz-plain.pb.metafix.opb
COMMAND LINE= ./cdcl-cuttingplanes-release
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-4120736-1467308561/watcher-4120736-1467308561 -o /tmp/evaluation-result-4120736-1467308561/solver-4120736-1467308561 -C 1800 -W 1900 -M 15500 --bin-var /tmp/runsolver-exch-node131-1467308290-16388 --watchdog 1960 --input HOME/instance-4120736-1467308561.opb ./cdcl-cuttingplanes-release

TIME LIMIT= 1800 seconds
MEMORY LIMIT= 15500 MiB
NBCORE= 4

MD5SUM BENCH= cf5bca21cd7b00f665c291e01c6c8eaa
RANDOM SEED=1696235155

node131.alineos.net Linux 2.6.32-71.29.1.el6.x86_64 #1 SMP Mon Jun 27 19:49:27 BST 2011

/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.334
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 0
cpu cores	: 4
apicid		: 0
initial apicid	: 0
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm dca sse4_1 sse4_2 popcnt lahf_lm ida tpr_shadow vnmi flexpriority ept vpid
bogomips	: 5332.66
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management:

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.334
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 0
cpu cores	: 4
apicid		: 16
initial apicid	: 16
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm dca sse4_1 sse4_2 popcnt lahf_lm ida tpr_shadow vnmi flexpriority ept vpid
bogomips	: 5332.55
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management:

processor	: 2
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.334
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 1
cpu cores	: 4
apicid		: 2
initial apicid	: 2
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm dca sse4_1 sse4_2 popcnt lahf_lm ida tpr_shadow vnmi flexpriority ept vpid
bogomips	: 5332.55
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management:

processor	: 3
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.334
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 1
cpu cores	: 4
apicid		: 18
initial apicid	: 18
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm dca sse4_1 sse4_2 popcnt lahf_lm ida tpr_shadow vnmi flexpriority ept vpid
bogomips	: 5332.54
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management:

processor	: 4
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.334
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 2
cpu cores	: 4
apicid		: 4
initial apicid	: 4
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm dca sse4_1 sse4_2 popcnt lahf_lm ida tpr_shadow vnmi flexpriority ept vpid
bogomips	: 5332.56
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management:

processor	: 5
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.334
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 2
cpu cores	: 4
apicid		: 20
initial apicid	: 20
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm dca sse4_1 sse4_2 popcnt lahf_lm ida tpr_shadow vnmi flexpriority ept vpid
bogomips	: 5332.55
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management:

processor	: 6
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.334
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 3
cpu cores	: 4
apicid		: 6
initial apicid	: 6
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm dca sse4_1 sse4_2 popcnt lahf_lm ida tpr_shadow vnmi flexpriority ept vpid
bogomips	: 5332.55
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management:

processor	: 7
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.334
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 3
cpu cores	: 4
apicid		: 22
initial apicid	: 22
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm dca sse4_1 sse4_2 popcnt lahf_lm ida tpr_shadow vnmi flexpriority ept vpid
bogomips	: 5332.55
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:       32872528 kB
MemFree:        30313628 kB
Buffers:          118900 kB
Cached:           308644 kB
SwapCached:            0 kB
Active:           294668 kB
Inactive:         209736 kB
Active(anon):      71520 kB
Inactive(anon):     8184 kB
Active(file):     223148 kB
Inactive(file):   201552 kB
Unevictable:     1314412 kB
Mlocked:         1199948 kB
SwapTotal:      67108856 kB
SwapFree:       67108856 kB
Dirty:              2596 kB
Writeback:             0 kB
AnonPages:       1391560 kB
Mapped:            13928 kB
Shmem:               204 kB
Slab:             606476 kB
SReclaimable:      49732 kB
SUnreclaim:       556744 kB
KernelStack:        1472 kB
PageTables:         6540 kB
NFS_Unstable:          0 kB
Bounce:                0 kB
WritebackTmp:          0 kB
CommitLimit:    83545120 kB
Committed_AS:    1519432 kB
VmallocTotal:   34359738367 kB
VmallocUsed:      346412 kB
VmallocChunk:   34341988032 kB
HardwareCorrupted:     0 kB
AnonHugePages:    169984 kB
HugePages_Total:       0
HugePages_Free:        0
HugePages_Rsvd:        0
HugePages_Surp:        0
Hugepagesize:       2048 kB
DirectMap4k:        7552 kB
DirectMap2M:    33538048 kB

Free space on /tmp at the end= 71728 MiB
End job on node131 at 2016-06-30 19:42:41