Trace number 1538462

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
SATzilla2009_R 2009-03-22SAT 6.23305 6.24435

General information on the benchmark

NameRANDOM/LARGE/7SAT/UNKNOWN/160/
unif-k7-r85-v160-c13600-S432776913-077.cnf
MD5SUM7added98d83a731c0c62b4e7cbaf3442
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark6.23305
Satisfiable
(Un)Satisfiability was proved
Number of variables160
Number of clauses13600
Sum of the clauses size95200
Maximum clause length7
Minimum clause length7
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 30
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 513600

Solver Data 

6.18/6.24	c SATzilla is building models for class 1
6.18/6.24	c run presolver SATenstein for 30 seconds ... 
6.18/6.24	c Bin: Executing SATenstein
6.18/6.24	c spawning binary file with 30 seconds ...
6.18/6.24	c child exited successfully
6.18/6.24	c SATenstein returned code 10.
6.18/6.24	s SATISFIABLE
6.18/6.24	v  -1 2 -3 -4 -5 -6 -7 -8 9 10
6.18/6.24	v  -11 -12 13 14 15 -16 -17 -18 -19 20
6.18/6.24	v  21 -22 23 -24 -25 26 -27 -28 29 -30
6.18/6.24	v  -31 -32 33 -34 35 -36 37 -38 39 -40
6.18/6.24	v  41 42 43 -44 -45 -46 -47 48 -49 50
6.18/6.24	v  51 52 -53 -54 55 56 57 58 -59 -60
6.18/6.24	v  61 -62 -63 -64 65 -66 67 -68 69 70
6.18/6.24	v  71 72 73 -74 -75 76 77 -78 -79 80
6.18/6.24	v  -81 82 -83 -84 85 -86 87 -88 -89 90
6.18/6.24	v  91 92 93 94 -95 96 97 -98 -99 100
6.18/6.24	v  -101 -102 103 104 -105 -106 107 108 109 110
6.18/6.24	v  -111 -112 113 -114 -115 116 117 118 -119 120
6.18/6.24	v  -121 -122 123 -124 -125 -126 127 -128 129 -130
6.18/6.24	v  131 -132 -133 -134 -135 -136 137 -138 -139 140
6.18/6.24	v  141 -142 -143 -144 145 -146 147 -148 -149 150
6.18/6.24	v  -151 152 153 -154 -155 156 -157 -158 -159 160
6.18/6.24	v  0
6.18/6.24	c SATZILLA_TIME=6.220000

Verifier Data 

OK

Watcher Data 

runsolver version 3.2.9 (svn:489) (c) roussel@cril.univ-artois.fr

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-1538462-1238432151/watcher-1538462-1238432151 -o /tmp/evaluation-result-1538462-1238432151/solver-1538462-1238432151 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/SATzilla2009_R HOME/instance-1538462-1238432151.cnf 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1230 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 1800 seconds
Enforcing VSIZE limit (soft limit, will send SIGTERM then SIGKILL): 1843200 KiB
Enforcing VSIZE limit (hard limit, stack expansion will fail with SIGSEGV, brk() and mmap() will return ENOMEM): 1894400 KiB
Solver output will be limited to a maximum of 15728640 bytes. The first 1048576 bytes and the last 14680064 bytes will be preserved
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 0.92 0.98 1.08 3/66 5121
/proc/meminfo: memFree=1273320/2055920 swapFree=4176412/4192956
[pid=5121] ppid=5119 vsize=2056 CPUtime=0
/proc/5121/stat : 5121 (SATzilla2009_R) S 5119 5121 4873 0 -1 4194304 132 0 0 0 0 0 0 0 18 0 1 0 1115878095 2105344 112 1992294400 134512640 136149437 4294956208 18446744073709551615 135542781 0 0 4096 0 18446744071563356171 0 0 17 0 0 0
/proc/5121/statm: 514 112 96 399 0 111 0
[pid=5122] ppid=5121 vsize=6508 CPUtime=0
/proc/5122/stat : 5122 (SATenstein) R 5121 5121 4873 0 -1 4194304 281 0 0 0 0 0 0 0 19 0 1 0 1115878095 6664192 262 1992294400 134512640 134854740 4294955344 18446744073709551615 4294960144 0 0 8392704 0 0 0 0 17 0 0 0
/proc/5122/statm: 1627 262 151 83 0 1188 0

[startup+0.040888 s]
/proc/loadavg: 0.92 0.98 1.08 3/66 5121
/proc/meminfo: memFree=1273320/2055920 swapFree=4176412/4192956
[pid=5121] ppid=5119 vsize=2056 CPUtime=0
/proc/5121/stat : 5121 (SATzilla2009_R) S 5119 5121 4873 0 -1 4194304 132 0 0 0 0 0 0 0 18 0 1 0 1115878095 2105344 112 1992294400 134512640 136149437 4294956208 18446744073709551615 135542781 0 0 4096 0 18446744071563356171 0 0 17 0 0 0
/proc/5121/statm: 514 112 96 399 0 111 0
[pid=5122] ppid=5121 vsize=22124 CPUtime=0.03
/proc/5122/stat : 5122 (SATenstein) R 5121 5121 4873 0 -1 4194304 658 0 0 0 3 0 0 0 19 0 1 0 1115878095 22654976 638 1992294400 134512640 134854740 4294955344 18446744073709551615 134772485 0 0 8392704 0 0 0 0 17 0 0 0
/proc/5122/statm: 5531 638 153 83 0 5092 0
Current children cumulated CPU time (s) 0.03
Current children cumulated vsize (KiB) 24180

[startup+0.101896 s]
/proc/loadavg: 0.92 0.98 1.08 3/66 5121
/proc/meminfo: memFree=1273320/2055920 swapFree=4176412/4192956
[pid=5121] ppid=5119 vsize=2056 CPUtime=0
/proc/5121/stat : 5121 (SATzilla2009_R) S 5119 5121 4873 0 -1 4194304 132 0 0 0 0 0 0 0 18 0 1 0 1115878095 2105344 112 1992294400 134512640 136149437 4294956208 18446744073709551615 135542781 0 0 4096 0 18446744071563356171 0 0 17 0 0 0
/proc/5121/statm: 514 112 96 399 0 111 0
[pid=5122] ppid=5121 vsize=22124 CPUtime=0.09
/proc/5122/stat : 5122 (SATenstein) R 5121 5121 4873 0 -1 4194304 674 0 0 0 9 0 0 0 19 0 1 0 1115878095 22654976 654 1992294400 134512640 134854740 4294955344 18446744073709551615 134772473 0 0 8392704 0 0 0 0 17 0 0 0
/proc/5122/statm: 5531 654 153 83 0 5092 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 24180

[startup+0.301922 s]
/proc/loadavg: 0.92 0.98 1.08 3/66 5121
/proc/meminfo: memFree=1273320/2055920 swapFree=4176412/4192956
[pid=5121] ppid=5119 vsize=2056 CPUtime=0
/proc/5121/stat : 5121 (SATzilla2009_R) S 5119 5121 4873 0 -1 4194304 132 0 0 0 0 0 0 0 18 0 1 0 1115878095 2105344 112 1992294400 134512640 136149437 4294956208 18446744073709551615 135542781 0 0 4096 0 18446744071563356171 0 0 17 0 0 0
/proc/5121/statm: 514 112 96 399 0 111 0
[pid=5122] ppid=5121 vsize=22124 CPUtime=0.29
/proc/5122/stat : 5122 (SATenstein) R 5121 5121 4873 0 -1 4194304 852 0 0 0 29 0 0 0 21 0 1 0 1115878095 22654976 805 1992294400 134512640 134854740 4294955344 18446744073709551615 134760382 0 0 8392704 0 0 0 0 17 0 0 0
/proc/5122/statm: 5531 805 174 83 0 5092 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 24180

[startup+0.701973 s]
/proc/loadavg: 0.92 0.98 1.08 3/66 5121
/proc/meminfo: memFree=1273320/2055920 swapFree=4176412/4192956
[pid=5121] ppid=5119 vsize=2056 CPUtime=0
/proc/5121/stat : 5121 (SATzilla2009_R) S 5119 5121 4873 0 -1 4194304 132 0 0 0 0 0 0 0 18 0 1 0 1115878095 2105344 112 1992294400 134512640 136149437 4294956208 18446744073709551615 135542781 0 0 4096 0 18446744071563356171 0 0 17 0 0 0
/proc/5121/statm: 514 112 96 399 0 111 0
[pid=5122] ppid=5121 vsize=22124 CPUtime=0.69
/proc/5122/stat : 5122 (SATenstein) R 5121 5121 4873 0 -1 4194304 852 0 0 0 69 0 0 0 25 0 1 0 1115878095 22654976 805 1992294400 134512640 134854740 4294955344 18446744073709551615 134761132 0 0 8392704 0 0 0 0 17 0 0 0
/proc/5122/statm: 5531 805 174 83 0 5092 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 24180

[startup+1.50208 s]
/proc/loadavg: 0.92 0.98 1.08 2/68 5123
/proc/meminfo: memFree=1270616/2055920 swapFree=4176412/4192956
[pid=5121] ppid=5119 vsize=2056 CPUtime=0
/proc/5121/stat : 5121 (SATzilla2009_R) S 5119 5121 4873 0 -1 4194304 132 0 0 0 0 0 0 0 18 0 1 0 1115878095 2105344 112 1992294400 134512640 136149437 4294956208 18446744073709551615 135542781 0 0 4096 0 18446744071563356171 0 0 17 0 0 0
/proc/5121/statm: 514 112 96 399 0 111 0
[pid=5122] ppid=5121 vsize=22124 CPUtime=1.49
/proc/5122/stat : 5122 (SATenstein) R 5121 5121 4873 0 -1 4194304 852 0 0 0 149 0 0 0 25 0 1 0 1115878095 22654976 805 1992294400 134512640 134854740 4294955344 18446744073709551615 134760012 0 0 8392704 0 0 0 0 17 0 0 0
/proc/5122/statm: 5531 805 174 83 0 5092 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 24180

[startup+3.10128 s]
/proc/loadavg: 1.01 1.00 1.09 2/68 5123
/proc/meminfo: memFree=1269400/2055920 swapFree=4176412/4192956
[pid=5121] ppid=5119 vsize=2056 CPUtime=0
/proc/5121/stat : 5121 (SATzilla2009_R) S 5119 5121 4873 0 -1 4194304 132 0 0 0 0 0 0 0 18 0 1 0 1115878095 2105344 112 1992294400 134512640 136149437 4294956208 18446744073709551615 135542781 0 0 4096 0 18446744071563356171 0 0 17 0 0 0
/proc/5121/statm: 514 112 96 399 0 111 0
[pid=5122] ppid=5121 vsize=22124 CPUtime=3.08
/proc/5122/stat : 5122 (SATenstein) R 5121 5121 4873 0 -1 4194304 852 0 0 0 308 0 0 0 25 0 1 0 1115878095 22654976 805 1992294400 134512640 134854740 4294955344 18446744073709551615 134760607 0 0 8392704 0 0 0 0 17 1 0 0
/proc/5122/statm: 5531 805 174 83 0 5092 0
Current children cumulated CPU time (s) 3.08
Current children cumulated vsize (KiB) 24180

Solver just ended. Dumping a history of the last processes samples

[startup+4.70149 s]
/proc/loadavg: 1.01 1.00 1.09 2/68 5123
/proc/meminfo: memFree=1270744/2055920 swapFree=4176412/4192956
[pid=5121] ppid=5119 vsize=2056 CPUtime=0
/proc/5121/stat : 5121 (SATzilla2009_R) S 5119 5121 4873 0 -1 4194304 132 0 0 0 0 0 0 0 18 0 1 0 1115878095 2105344 112 1992294400 134512640 136149437 4294956208 18446744073709551615 135542781 0 0 4096 0 18446744071563356171 0 0 17 0 0 0
/proc/5121/statm: 514 112 96 399 0 111 0
[pid=5122] ppid=5121 vsize=22124 CPUtime=4.68
/proc/5122/stat : 5122 (SATenstein) R 5121 5121 4873 0 -1 4194304 852 0 0 0 468 0 0 0 25 0 1 0 1115878095 22654976 805 1992294400 134512640 134854740 4294955344 18446744073709551615 134760356 0 0 8392704 0 0 0 0 17 0 0 0
/proc/5122/statm: 5531 805 174 83 0 5092 0
Current children cumulated CPU time (s) 4.68
Current children cumulated vsize (KiB) 24180

[startup+5.50559 s]
/proc/loadavg: 1.01 1.00 1.09 2/68 5123
/proc/meminfo: memFree=1270744/2055920 swapFree=4176412/4192956
[pid=5121] ppid=5119 vsize=2056 CPUtime=0
/proc/5121/stat : 5121 (SATzilla2009_R) S 5119 5121 4873 0 -1 4194304 132 0 0 0 0 0 0 0 18 0 1 0 1115878095 2105344 112 1992294400 134512640 136149437 4294956208 18446744073709551615 135542781 0 0 4096 0 18446744071563356171 0 0 17 0 0 0
/proc/5121/statm: 514 112 96 399 0 111 0
[pid=5122] ppid=5121 vsize=22124 CPUtime=5.49
/proc/5122/stat : 5122 (SATenstein) R 5121 5121 4873 0 -1 4194304 852 0 0 0 549 0 0 0 25 0 1 0 1115878095 22654976 805 1992294400 134512640 134854740 4294955344 18446744073709551615 134760012 0 0 8392704 0 0 0 0 17 0 0 0
/proc/5122/statm: 5531 805 174 83 0 5092 0
Current children cumulated CPU time (s) 5.49
Current children cumulated vsize (KiB) 24180

[startup+5.90164 s]
/proc/loadavg: 1.01 1.00 1.09 2/68 5123
/proc/meminfo: memFree=1270744/2055920 swapFree=4176412/4192956
[pid=5121] ppid=5119 vsize=2056 CPUtime=0
/proc/5121/stat : 5121 (SATzilla2009_R) S 5119 5121 4873 0 -1 4194304 132 0 0 0 0 0 0 0 18 0 1 0 1115878095 2105344 112 1992294400 134512640 136149437 4294956208 18446744073709551615 135542781 0 0 4096 0 18446744071563356171 0 0 17 0 0 0
/proc/5121/statm: 514 112 96 399 0 111 0
[pid=5122] ppid=5121 vsize=22124 CPUtime=5.88
/proc/5122/stat : 5122 (SATenstein) R 5121 5121 4873 0 -1 4194304 852 0 0 0 588 0 0 0 25 0 1 0 1115878095 22654976 805 1992294400 134512640 134854740 4294955344 18446744073709551615 134760572 0 0 8392704 0 0 0 0 17 0 0 0
/proc/5122/statm: 5531 805 174 83 0 5092 0
Current children cumulated CPU time (s) 5.88
Current children cumulated vsize (KiB) 24180

[startup+6.10167 s]
/proc/loadavg: 1.01 1.00 1.09 2/68 5123
/proc/meminfo: memFree=1270744/2055920 swapFree=4176412/4192956
[pid=5121] ppid=5119 vsize=2056 CPUtime=0
/proc/5121/stat : 5121 (SATzilla2009_R) S 5119 5121 4873 0 -1 4194304 132 0 0 0 0 0 0 0 18 0 1 0 1115878095 2105344 112 1992294400 134512640 136149437 4294956208 18446744073709551615 135542781 0 0 4096 0 18446744071563356171 0 0 17 0 0 0
/proc/5121/statm: 514 112 96 399 0 111 0
[pid=5122] ppid=5121 vsize=22124 CPUtime=6.08
/proc/5122/stat : 5122 (SATenstein) R 5121 5121 4873 0 -1 4194304 852 0 0 0 608 0 0 0 25 0 1 0 1115878095 22654976 805 1992294400 134512640 134854740 4294955344 18446744073709551615 134760607 0 0 8392704 0 0 0 0 17 0 0 0
/proc/5122/statm: 5531 805 174 83 0 5092 0
Current children cumulated CPU time (s) 6.08
Current children cumulated vsize (KiB) 24180

[startup+6.20168 s]
/proc/loadavg: 1.01 1.00 1.09 2/68 5123
/proc/meminfo: memFree=1270744/2055920 swapFree=4176412/4192956
[pid=5121] ppid=5119 vsize=2056 CPUtime=0
/proc/5121/stat : 5121 (SATzilla2009_R) S 5119 5121 4873 0 -1 4194304 132 0 0 0 0 0 0 0 18 0 1 0 1115878095 2105344 112 1992294400 134512640 136149437 4294956208 18446744073709551615 135542781 0 0 4096 0 18446744071563356171 0 0 17 0 0 0
/proc/5121/statm: 514 112 96 399 0 111 0
[pid=5122] ppid=5121 vsize=22124 CPUtime=6.18
/proc/5122/stat : 5122 (SATenstein) R 5121 5121 4873 0 -1 4194304 852 0 0 0 618 0 0 0 25 0 1 0 1115878095 22654976 805 1992294400 134512640 134854740 4294955344 18446744073709551615 134761179 0 0 8392704 0 0 0 0 17 0 0 0
/proc/5122/statm: 5531 805 174 83 0 5092 0
Current children cumulated CPU time (s) 6.18
Current children cumulated vsize (KiB) 24180

Child status: 10
Real time (s): 6.24435
CPU time (s): 6.23305
CPU user time (s): 6.22805
CPU system time (s): 0.004999
CPU usage (%): 99.8191
Max. virtual memory (cumulated for all children) (KiB): 24180

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 6.22805
system time used= 0.004999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 1022
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= 4
involuntary context switches= 35

runsolver used 0.014997 second user time and 0.014997 second system time

The end

Launcher Data 

Begin job on node40 at 2009-03-30 18:55:51
IDJOB=1538462
IDBENCH=70267
IDSOLVER=526
FILE ID=node40/1538462-1238432151
PBS_JOBID= 9061567
Free space on /tmp= 63504 MiB

SOLVER NAME= SATzilla2009_R 2009-03-22
BENCH NAME= SAT09/RANDOM/LARGE/7SAT/UNKNOWN/160/unif-k7-r85-v160-c13600-S432776913-077.cnf
COMMAND LINE= HOME/SATzilla2009_R BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1538462-1238432151/watcher-1538462-1238432151 -o /tmp/evaluation-result-1538462-1238432151/solver-1538462-1238432151 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/SATzilla2009_R HOME/instance-1538462-1238432151.cnf

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB
MAX NB THREAD= 0

MD5SUM BENCH= 7added98d83a731c0c62b4e7cbaf3442
RANDOM SEED=249248634

node40.alineos.net Linux 2.6.9-22.EL.rootsmp #1 SMP Mon Oct 3 08:59:52 CEST 2005

/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 15
model		: 4
model name	:                   Intel(R) Xeon(TM) CPU 3.00GHz
stepping	: 3
cpu MHz		: 3000.232
cache size	: 2048 KB
fpu		: yes
fpu_exception	: yes
cpuid level	: 5
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx lm pni monitor ds_cpl cid cx16 xtpr
bogomips	: 5914.62
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 15
model		: 4
model name	:                   Intel(R) Xeon(TM) CPU 3.00GHz
stepping	: 3
cpu MHz		: 3000.232
cache size	: 2048 KB
fpu		: yes
fpu_exception	: yes
cpuid level	: 5
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx lm pni monitor ds_cpl cid cx16 xtpr
bogomips	: 5586.94
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2055920 kB
MemFree:       1273864 kB
Buffers:         77004 kB
Cached:         613904 kB
SwapCached:       9628 kB
Active:         172420 kB
Inactive:       529764 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1273864 kB
SwapTotal:     4192956 kB
SwapFree:      4176412 kB
Dirty:           31840 kB
Writeback:           0 kB
Mapped:          17120 kB
Slab:            65924 kB
Committed_AS:  2726548 kB
PageTables:       1476 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264952 kB
VmallocChunk: 536605679 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 63472 MiB
End job on node40 at 2009-03-30 18:55:58