Trace number 312627

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, and are wall clock time (not CPU 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
March KS 2007-02-08Signal 39.667 39.6902

General information on the benchmark

Nameindustrial/anbulagan/
medium-unsat/dated-5-11-u.cnf
MD5SUM083d28c2adf10233f37f8b5a078c94a9
Bench CategoryINDUST (industrial instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark155.742
Satisfiable
(Un)Satisfiability was proved
Number of variables108786
Number of clauses482639
Sum of the clauses size1096328
Maximum clause length10
Minimum clause length1
Number of clauses of size 19230
Number of clauses of size 2395289
Number of clauses of size 357400
Number of clauses of size 42300
Number of clauses of size 59200
Number of clauses of size over 59220

Solver Data (download as text)

5.59/5.69	c main():: ***                                   [ march satisfiability solver ]                                   ***
5.59/5.69	c main()::  **            Copyright (C) 2001-2004 M. Dufour, M. Heule, J. van Zwieten and H. van Maaren            **
5.59/5.69	c main()::   * This program may be redistributed and/or modified under the terms of the GNU Gereral Public License *
5.59/5.69	c main()::
5.59/5.69	c initFormula():: searching for DIMACS p-line....
5.59/5.69	c initFormula():: the DIMACS p-line indicates a CNF of 108786 variables and 482639 clauses.
5.59/5.69	c parseCNF():: parsing....
5.59/5.69	c parseCNF():: the CNF contains 9230 unary clauses.
5.59/5.69	c runParser():: parsing was successful, warming up engines...
5.59/5.69	c find_and_remove_tautogolies():: found and removed 15606 tautologies
5.59/5.69	c find_and_remove_tautogolies():: found and removed 109 tautologies
5.59/5.69	c simplify_formula():: removed 149 tautological, 192032 satisfied and 10368 duplicate clauses
5.59/5.69	c preprocessing fase I completed:: there are now 53491 free variables and 280090 clauses.
5.59/5.69	c stat :: sign balance is biased by 0.940
5.59/5.69	c shorten_equivalence(): average equivalence length reduced from nan to nan
5.59/5.69	c using k-SAT heuristics (size based diff)
5.59/5.69	c longest clause has size 10
5.59/5.69	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
5.59/5.69	c main():: clause / variable ratio: ( 280090 / 108786 ) = 2.57
5.59/5.69	c longest clause has size 10
5.59/5.69	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
5.59/5.69	c dynamic_preselect_setsize :: on
5.59/5.69	c suggested doublelook initial :: 0
5.59/5.69	c main():: all systems go!
5.59/5.69	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |********************************
c |****************************************************************| 0 NC: 143 JD: 13
39.17/39.22	c |----------------------------------------------------------------|

Verifier Data (download as text)

ERROR: Unexpected answer ! (SATISFIABLE/UNSATISFIABLE expected)
Got answer:

Watcher Data (download as text)

runsolver version 3.2.2 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node5/watcher-312627-1176857552 -o ROOT/results/node5/solver-312627-1176857552 -C 1200 -W 2400 -M 1800 --output-limit 1,15 /tmp/evaluation/312627-1176857552/march_ks /tmp/evaluation/312627-1176857552/instance-312627-1176857552.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): 2400 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: 1.00 1.00 1.00 3/77 17281
/proc/meminfo: memFree=1754688/2055920 swapFree=4127688/4192956
[pid=17281] ppid=17279 vsize=6828 CPUtime=0
/proc/17281/stat : 17281 (march_ks) R 17279 17281 16387 0 -1 4194304 665 0 0 0 0 0 0 0 18 0 1 0 161792827 6991872 650 18446744073709551615 134512640 135019032 4294956640 18446744073709551615 134662703 0 0 4096 0 0 0 0 17 1 0 0
/proc/17281/statm: 1707 653 45 123 0 1582 0

[startup+0.101318 s]
/proc/loadavg: 1.00 1.00 1.00 3/77 17281
/proc/meminfo: memFree=1754688/2055920 swapFree=4127688/4192956
[pid=17281] ppid=17279 vsize=14048 CPUtime=0.09
/proc/17281/stat : 17281 (march_ks) R 17279 17281 16387 0 -1 4194304 2931 0 0 0 8 1 0 0 18 0 1 0 161792827 14385152 2916 18446744073709551615 134512640 135019032 4294956640 18446744073709551615 134684029 0 0 4096 0 0 0 0 17 1 0 0
/proc/17281/statm: 3512 2916 47 123 0 3387 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 14048

[startup+0.201329 s]
/proc/loadavg: 1.00 1.00 1.00 3/77 17281
/proc/meminfo: memFree=1754688/2055920 swapFree=4127688/4192956
[pid=17281] ppid=17279 vsize=15500 CPUtime=0.19
/proc/17281/stat : 17281 (march_ks) R 17279 17281 16387 0 -1 4194304 3380 0 0 0 18 1 0 0 18 0 1 0 161792827 15872000 3365 18446744073709551615 134512640 135019032 4294956640 18446744073709551615 134662703 0 0 4096 0 0 0 0 17 1 0 0
/proc/17281/statm: 3875 3365 47 123 0 3750 0
Current children cumulated CPU time (s) 0.19
Current children cumulated vsize (KiB) 15500

[startup+0.30134 s]
/proc/loadavg: 1.00 1.00 1.00 3/77 17281
/proc/meminfo: memFree=1754688/2055920 swapFree=4127688/4192956
[pid=17281] ppid=17279 vsize=16820 CPUtime=0.29
/proc/17281/stat : 17281 (march_ks) R 17279 17281 16387 0 -1 4194304 3793 0 0 0 28 1 0 0 19 0 1 0 161792827 17223680 3778 18446744073709551615 134512640 135019032 4294956640 18446744073709551615 134662703 0 0 4096 0 0 0 0 17 1 0 0
/proc/17281/statm: 4205 3778 47 123 0 4080 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 16820

[startup+0.701385 s]
/proc/loadavg: 1.00 1.00 1.00 3/77 17281
/proc/meminfo: memFree=1754688/2055920 swapFree=4127688/4192956
[pid=17281] ppid=17279 vsize=51704 CPUtime=0.69
/proc/17281/stat : 17281 (march_ks) R 17279 17281 16387 0 -1 4194304 9223 0 0 0 65 4 0 0 23 0 1 0 161792827 52944896 8993 18446744073709551615 134512640 135019032 4294956640 18446744073709551615 134559418 0 0 4096 0 0 0 0 17 1 0 0
/proc/17281/statm: 12926 8993 48 123 0 12801 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 51704

[startup+1.50156 s]
/proc/loadavg: 1.00 1.00 1.00 2/78 17282
/proc/meminfo: memFree=1717560/2055920 swapFree=4127688/4192956
[pid=17281] ppid=17279 vsize=55344 CPUtime=1.49
/proc/17281/stat : 17281 (march_ks) R 17279 17281 16387 0 -1 4194304 12364 0 0 0 144 5 0 0 25 0 1 0 161792827 56672256 9888 18446744073709551615 134512640 135019032 4294956640 18446744073709551615 134555001 0 0 4096 0 0 0 0 17 1 0 0
/proc/17281/statm: 13836 9888 52 123 0 13711 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 55344

[startup+3.10266 s]
/proc/loadavg: 1.00 1.00 1.00 2/78 17282
/proc/meminfo: memFree=1715384/2055920 swapFree=4127688/4192956
[pid=17281] ppid=17279 vsize=53560 CPUtime=3.09
/proc/17281/stat : 17281 (march_ks) R 17279 17281 16387 0 -1 4194304 16207 0 0 0 302 7 0 0 25 0 1 0 161792827 54845440 9665 18446744073709551615 134512640 135019032 4294956640 18446744073709551615 134660757 0 0 4096 0 0 0 0 17 1 0 0
/proc/17281/statm: 13390 9665 63 123 0 13265 0
Current children cumulated CPU time (s) 3.09
Current children cumulated vsize (KiB) 53560

[startup+6.30202 s]
/proc/loadavg: 1.00 1.00 1.00 2/78 17282
/proc/meminfo: memFree=1651768/2055920 swapFree=4127688/4192956
[pid=17281] ppid=17279 vsize=130564 CPUtime=6.29
/proc/17281/stat : 17281 (march_ks) R 17279 17281 16387 0 -1 4194304 45194 0 0 0 610 19 0 0 25 0 1 0 161792827 133697536 25712 18446744073709551615 134512640 135019032 4294956640 18446744073709551615 134538179 0 0 4096 0 0 0 0 17 1 0 0
/proc/17281/statm: 32641 25712 72 123 0 32516 0
Current children cumulated CPU time (s) 6.29
Current children cumulated vsize (KiB) 130564

[startup+12.7017 s]
/proc/loadavg: 1.00 1.00 1.00 2/78 17282
/proc/meminfo: memFree=1651576/2055920 swapFree=4127688/4192956
[pid=17281] ppid=17279 vsize=130564 CPUtime=12.69
/proc/17281/stat : 17281 (march_ks) R 17279 17281 16387 0 -1 4194304 45221 0 0 0 1250 19 0 0 25 0 1 0 161792827 133697536 25739 18446744073709551615 134512640 135019032 4294956640 18446744073709551615 134537960 0 0 4096 0 0 0 0 17 1 0 0
/proc/17281/statm: 32641 25739 72 123 0 32516 0
Current children cumulated CPU time (s) 12.69
Current children cumulated vsize (KiB) 130564

[startup+25.5012 s]
/proc/loadavg: 1.00 1.00 1.00 2/78 17282
/proc/meminfo: memFree=1649336/2055920 swapFree=4127688/4192956
[pid=17281] ppid=17279 vsize=133088 CPUtime=25.49
/proc/17281/stat : 17281 (march_ks) R 17279 17281 16387 0 -1 4194304 45812 0 0 0 2529 20 0 0 25 0 1 0 161792827 136282112 26330 18446744073709551615 134512640 135019032 4294956640 18446744073709551615 134538568 0 0 4096 0 0 0 0 17 1 0 0
/proc/17281/statm: 33272 26330 72 123 0 33147 0
Current children cumulated CPU time (s) 25.49
Current children cumulated vsize (KiB) 133088

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

[startup+25.6022 s]
/proc/loadavg: 1.00 1.00 1.00 2/78 17282
/proc/meminfo: memFree=1649336/2055920 swapFree=4127688/4192956
[pid=17281] ppid=17279 vsize=133088 CPUtime=25.59
/proc/17281/stat : 17281 (march_ks) R 17279 17281 16387 0 -1 4194304 45812 0 0 0 2539 20 0 0 25 0 1 0 161792827 136282112 26330 18446744073709551615 134512640 135019032 4294956640 18446744073709551615 134538578 0 0 4096 0 0 0 0 17 1 0 0
/proc/17281/statm: 33272 26330 72 123 0 33147 0
Current children cumulated CPU time (s) 25.59
Current children cumulated vsize (KiB) 133088

[startup+32.0059 s]
/proc/loadavg: 1.00 1.00 1.00 2/78 17282
/proc/meminfo: memFree=1643128/2055920 swapFree=4127688/4192956
[pid=17281] ppid=17279 vsize=139588 CPUtime=31.99
/proc/17281/stat : 17281 (march_ks) R 17279 17281 16387 0 -1 4194304 47366 0 0 0 3178 21 0 0 25 0 1 0 161792827 142938112 27884 18446744073709551615 134512640 135019032 4294956640 18446744073709551615 134538179 0 0 4096 0 0 0 0 17 1 0 0
/proc/17281/statm: 34897 27884 72 123 0 34772 0
Current children cumulated CPU time (s) 31.99
Current children cumulated vsize (KiB) 139588

[startup+35.2013 s]
/proc/loadavg: 1.00 1.00 1.00 2/78 17282
/proc/meminfo: memFree=1643000/2055920 swapFree=4127688/4192956
[pid=17281] ppid=17279 vsize=139588 CPUtime=35.18
/proc/17281/stat : 17281 (march_ks) R 17279 17281 16387 0 -1 4194304 47375 0 0 0 3497 21 0 0 25 0 1 0 161792827 142938112 27893 18446744073709551615 134512640 135019032 4294956640 18446744073709551615 134538568 0 0 4096 0 0 0 0 17 1 0 0
/proc/17281/statm: 34897 27893 72 123 0 34772 0
Current children cumulated CPU time (s) 35.18
Current children cumulated vsize (KiB) 139588

[startup+36.8025 s]
/proc/loadavg: 1.00 1.00 1.00 2/78 17282
/proc/meminfo: memFree=1643000/2055920 swapFree=4127688/4192956
[pid=17281] ppid=17279 vsize=139588 CPUtime=36.78
/proc/17281/stat : 17281 (march_ks) R 17279 17281 16387 0 -1 4194304 47383 0 0 0 3657 21 0 0 25 0 1 0 161792827 142938112 27901 18446744073709551615 134512640 135019032 4294956640 18446744073709551615 134526947 0 0 4096 0 0 0 0 17 1 0 0
/proc/17281/statm: 34897 27901 72 123 0 34772 0
Current children cumulated CPU time (s) 36.78
Current children cumulated vsize (KiB) 139588

[startup+38.4017 s]
/proc/loadavg: 1.00 1.00 1.00 2/78 17282
/proc/meminfo: memFree=1643000/2055920 swapFree=4127688/4192956
[pid=17281] ppid=17279 vsize=139588 CPUtime=38.38
/proc/17281/stat : 17281 (march_ks) R 17279 17281 16387 0 -1 4194304 47386 0 0 0 3817 21 0 0 25 0 1 0 161792827 142938112 27904 18446744073709551615 134512640 135019032 4294956640 18446744073709551615 134526957 0 0 4096 0 0 0 0 17 0 0 0
/proc/17281/statm: 34897 27904 72 123 0 34772 0
Current children cumulated CPU time (s) 38.38
Current children cumulated vsize (KiB) 139588

[startup+39.2017 s]
/proc/loadavg: 1.00 1.00 1.00 2/78 17282
/proc/meminfo: memFree=1642936/2055920 swapFree=4127688/4192956
[pid=17281] ppid=17279 vsize=139588 CPUtime=39.17
/proc/17281/stat : 17281 (march_ks) R 17279 17281 16387 0 -1 4194304 47386 0 0 0 3896 21 0 0 25 0 1 0 161792827 142938112 27904 18446744073709551615 134512640 135019032 4294956640 18446744073709551615 134538171 0 0 4096 0 0 0 0 17 1 0 0
/proc/17281/statm: 34897 27904 72 123 0 34772 0
Current children cumulated CPU time (s) 39.17
Current children cumulated vsize (KiB) 139588

[startup+39.6018 s]
/proc/loadavg: 1.00 1.00 1.00 2/78 17282
/proc/meminfo: memFree=1543672/2055920 swapFree=4127688/4192956
[pid=17281] ppid=17279 vsize=139764 CPUtime=39.57
/proc/17281/stat : 17281 (march_ks) R 17279 17281 16387 0 -1 4195840 49153 0 0 0 3899 58 0 0 25 0 1 0 161792827 143118336 27953 18446744073709551615 134512640 135019032 4294956640 18446744073709551615 134662703 0 0 4096 0 0 0 0 17 1 0 0
/proc/17281/statm: 34941 27953 72 123 0 34816 0
Current children cumulated CPU time (s) 39.57
Current children cumulated vsize (KiB) 139764

Child ended because it received signal 11 (SIGSEGV)
Real time (s): 39.6902
CPU time (s): 39.667
CPU user time (s): 38.9941
CPU system time (s): 0.672897
CPU usage (%): 99.9414
Max. virtual memory (cumulated for all children) (KiB): 139764

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 38.9941
system time used= 0.672897
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 52323
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= 7
involuntary context switches= 822

runsolver used 0.054991 second user time and 0.095985 second system time

The end

Launcher Data (download as text)

Begin job on node5 on Wed Apr 18 00:52:32 UTC 2007

IDJOB= 312627
IDBENCH= 20346
IDSOLVER= 111
FILE ID= node5/312627-1176857552

PBS_JOBID= 4590208

Free space on /tmp= 66465 MiB

SOLVER NAME= March KS 2007-02-08
BENCH NAME= HOME/pub/bench/SAT07/industrial/anbulagan/medium-unsat/dated-5-11-u.cnf
COMMAND LINE= /tmp/evaluation/312627-1176857552/march_ks /tmp/evaluation/312627-1176857552/instance-312627-1176857552.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node5/watcher-312627-1176857552 -o ROOT/results/node5/solver-312627-1176857552 -C 1200 -W 2400 -M 1800 --output-limit 1,15  /tmp/evaluation/312627-1176857552/march_ks /tmp/evaluation/312627-1176857552/instance-312627-1176857552.cnf            

META MD5SUM SOLVER= cd0143c15836d32fe9acb8d523a59b67
MD5SUM BENCH=  083d28c2adf10233f37f8b5a078c94a9

RANDOM SEED= 874928646

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node5.alineos.net 2.6.9-22.EL.rootsmp #1 SMP Mon Oct 3 08:59:52 CEST 2005 x86_64 x86_64 x86_64 GNU/Linux

/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:       1755160 kB
Buffers:         33796 kB
Cached:         184032 kB
SwapCached:      33908 kB
Active:         132740 kB
Inactive:       132548 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1755160 kB
SwapTotal:     4192956 kB
SwapFree:      4127688 kB
Dirty:           10284 kB
Writeback:           0 kB
Mapped:          29840 kB
Slab:            21100 kB
Committed_AS:  8584052 kB
PageTables:       1720 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= 66355 MiB

End job on node5 on Wed Apr 18 00:53:12 UTC 2007