Trace number 313747

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 48.9426 48.9784

General information on the benchmark

Nameindustrial/anbulagan/
hard-unsat/dated-5-15-u.cnf
MD5SUMc716daea92d5e29b94f85a19b52859ac
Bench CategoryINDUST (industrial instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark863.868
Satisfiable
(Un)Satisfiability was proved
Number of variables151952
Number of clauses697321
Sum of the clauses size1601192
Maximum clause length10
Minimum clause length1
Number of clauses of size 112754
Number of clauses of size 2551183
Number of clauses of size 3104744
Number of clauses of size 43180
Number of clauses of size 512720
Number of clauses of size over 512740

Solver Data (download as text)

8.89/8.94	c main():: ***                                   [ march satisfiability solver ]                                   ***
8.89/8.94	c main()::  **            Copyright (C) 2001-2004 M. Dufour, M. Heule, J. van Zwieten and H. van Maaren            **
8.89/8.94	c main()::   * This program may be redistributed and/or modified under the terms of the GNU Gereral Public License *
8.89/8.94	c main()::
8.89/8.94	c initFormula():: searching for DIMACS p-line....
8.89/8.94	c initFormula():: the DIMACS p-line indicates a CNF of 151952 variables and 697321 clauses.
8.89/8.94	c parseCNF():: parsing....
8.89/8.94	c parseCNF():: the CNF contains 12754 unary clauses.
8.89/8.94	c runParser():: parsing was successful, warming up engines...
8.89/8.94	c find_and_remove_tautogolies():: found and removed 21789 tautologies
8.89/8.94	c find_and_remove_tautogolies():: found and removed 109 tautologies
8.89/8.94	c simplify_formula():: removed 195 tautological, 246661 satisfied and 14336 duplicate clauses
8.89/8.94	c preprocessing fase I completed:: there are now 79706 free variables and 436129 clauses.
8.89/8.94	c stat :: sign balance is biased by 0.939
8.89/8.94	c shorten_equivalence(): average equivalence length reduced from nan to nan
8.89/8.94	c using k-SAT heuristics (size based diff)
8.89/8.94	c longest clause has size 10
8.89/8.94	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
8.89/8.94	c resolvent_look() :: found 8 resolvents
8.89/8.94	c main():: clause / variable ratio: ( 436137 / 151952 ) = 2.87
8.89/8.94	c longest clause has size 10
8.89/8.94	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
8.89/8.94	c dynamic_preselect_setsize :: on
8.89/8.94	c suggested doublelook initial :: 0
8.89/8.94	c main():: all systems go!
8.89/8.94	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |********************************
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/node45/watcher-313747-1176890388 -o ROOT/results/node45/solver-313747-1176890388 -C 1200 -W 2400 -M 1800 --output-limit 1,15 /tmp/evaluation/313747-1176890388/march_ks /tmp/evaluation/313747-1176890388/instance-313747-1176890388.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: 0.68 0.95 0.97 3/77 21565
/proc/meminfo: memFree=1704792/2055920 swapFree=4148536/4192956
[pid=21565] ppid=21563 vsize=3976 CPUtime=0
/proc/21565/stat : 21565 (march_ks) R 21563 21565 21457 0 -1 4194304 744 0 0 0 0 0 0 0 18 0 1 0 43884406 4071424 729 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134557383 0 0 4096 0 0 0 0 17 1 0 0
/proc/21565/statm: 994 733 45 123 0 869 0

[startup+0.0581329 s]
/proc/loadavg: 0.68 0.95 0.97 3/77 21565
/proc/meminfo: memFree=1704792/2055920 swapFree=4148536/4192956
[pid=21565] ppid=21563 vsize=18384 CPUtime=0.05
/proc/21565/stat : 21565 (march_ks) R 21563 21565 21457 0 -1 4194304 3695 0 0 0 4 1 0 0 18 0 1 0 43884406 18825216 3680 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134662703 0 0 4096 0 0 0 0 17 1 0 0
/proc/21565/statm: 4596 3681 47 123 0 4471 0
Current children cumulated CPU time (s) 0.05
Current children cumulated vsize (KiB) 18384

[startup+0.101136 s]
/proc/loadavg: 0.68 0.95 0.97 3/77 21565
/proc/meminfo: memFree=1704792/2055920 swapFree=4148536/4192956
[pid=21565] ppid=21563 vsize=18912 CPUtime=0.09
/proc/21565/stat : 21565 (march_ks) R 21563 21565 21457 0 -1 4194304 3898 0 0 0 8 1 0 0 18 0 1 0 43884406 19365888 3883 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134662703 0 0 4096 0 0 0 0 17 1 0 0
/proc/21565/statm: 4728 3883 47 123 0 4603 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 18912

[startup+0.301156 s]
/proc/loadavg: 0.68 0.95 0.97 3/77 21565
/proc/meminfo: memFree=1704792/2055920 swapFree=4148536/4192956
[pid=21565] ppid=21563 vsize=21816 CPUtime=0.29
/proc/21565/stat : 21565 (march_ks) R 21563 21565 21457 0 -1 4194304 4793 0 0 0 27 2 0 0 19 0 1 0 43884406 22339584 4778 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134684029 0 0 4096 0 0 0 0 17 1 0 0
/proc/21565/statm: 5454 4779 47 123 0 5329 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 21816

[startup+0.701197 s]
/proc/loadavg: 0.68 0.95 0.97 3/77 21565
/proc/meminfo: memFree=1704792/2055920 swapFree=4148536/4192956
[pid=21565] ppid=21563 vsize=27360 CPUtime=0.69
/proc/21565/stat : 21565 (march_ks) R 21563 21565 21457 0 -1 4194304 6519 0 0 0 66 3 0 0 23 0 1 0 43884406 28016640 6504 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134684029 0 0 4096 0 0 0 0 17 1 0 0
/proc/21565/statm: 6840 6504 47 123 0 6715 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 27360

[startup+1.50128 s]
/proc/loadavg: 0.68 0.95 0.97 2/78 21566
/proc/meminfo: memFree=1652048/2055920 swapFree=4148536/4192956
[pid=21565] ppid=21563 vsize=70624 CPUtime=1.49
/proc/21565/stat : 21565 (march_ks) R 21563 21565 21457 0 -1 4194304 13846 0 0 0 143 6 0 0 25 0 1 0 43884406 72318976 11836 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134560586 0 0 4096 0 0 0 0 17 1 0 0
/proc/21565/statm: 17656 11836 50 123 0 17531 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 70624

[startup+3.10144 s]
/proc/loadavg: 0.68 0.95 0.97 2/78 21566
/proc/meminfo: memFree=1645200/2055920 swapFree=4148536/4192956
[pid=21565] ppid=21563 vsize=76716 CPUtime=3.09
/proc/21565/stat : 21565 (march_ks) R 21563 21565 21457 0 -1 4194304 20260 0 0 0 301 8 0 0 25 0 1 0 43884406 78557184 13807 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134657890 0 0 4096 0 0 0 0 17 1 0 0
/proc/21565/statm: 19179 13807 52 123 0 19054 0
Current children cumulated CPU time (s) 3.09
Current children cumulated vsize (KiB) 76716

[startup+6.30277 s]
/proc/loadavg: 0.70 0.95 0.97 2/78 21566
/proc/meminfo: memFree=1649872/2055920 swapFree=4148536/4192956
[pid=21565] ppid=21563 vsize=92744 CPUtime=6.29
/proc/21565/stat : 21565 (march_ks) R 21563 21565 21457 0 -1 4194304 32621 0 0 0 616 13 0 0 25 0 1 0 43884406 94969856 16275 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134596009 0 0 4096 0 0 0 0 17 1 0 0
/proc/21565/statm: 23186 16278 66 123 0 23061 0
Current children cumulated CPU time (s) 6.29
Current children cumulated vsize (KiB) 92744

[startup+12.7014 s]
/proc/loadavg: 0.73 0.95 0.97 2/78 21566
/proc/meminfo: memFree=1558864/2055920 swapFree=4148536/4192956
[pid=21565] ppid=21563 vsize=185788 CPUtime=12.69
/proc/21565/stat : 21565 (march_ks) R 21563 21565 21457 0 -1 4194304 68400 0 0 0 1241 28 0 0 25 0 1 0 43884406 190246912 36465 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134538186 0 0 4096 0 0 0 0 17 1 0 0
/proc/21565/statm: 46447 36465 72 123 0 46322 0
Current children cumulated CPU time (s) 12.69
Current children cumulated vsize (KiB) 185788

[startup+25.5017 s]
/proc/loadavg: 0.79 0.95 0.97 2/78 21566
/proc/meminfo: memFree=1558800/2055920 swapFree=4148536/4192956
[pid=21565] ppid=21563 vsize=185788 CPUtime=25.48
/proc/21565/stat : 21565 (march_ks) R 21563 21565 21457 0 -1 4194304 68427 0 0 0 2520 28 0 0 25 0 1 0 43884406 190246912 36492 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134526992 0 0 4096 0 0 0 0 17 1 0 0
/proc/21565/statm: 46447 36492 72 123 0 46322 0
Current children cumulated CPU time (s) 25.48
Current children cumulated vsize (KiB) 185788

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

[startup+38.302 s]
/proc/loadavg: 0.82 0.95 0.97 2/78 21566
/proc/meminfo: memFree=1555664/2055920 swapFree=4148536/4192956
[pid=21565] ppid=21563 vsize=189336 CPUtime=38.28
/proc/21565/stat : 21565 (march_ks) R 21563 21565 21457 0 -1 4194304 69204 0 0 0 3800 28 0 0 25 0 1 0 43884406 193880064 37269 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134564744 0 0 4096 0 0 0 0 17 1 0 0
/proc/21565/statm: 47334 37269 72 123 0 47209 0
Current children cumulated CPU time (s) 38.28
Current children cumulated vsize (KiB) 189336

[startup+44.7017 s]
/proc/loadavg: 0.83 0.95 0.97 2/78 21566
/proc/meminfo: memFree=1555600/2055920 swapFree=4148536/4192956
[pid=21565] ppid=21563 vsize=189464 CPUtime=44.68
/proc/21565/stat : 21565 (march_ks) R 21563 21565 21457 0 -1 4194304 69217 0 0 0 4439 29 0 0 25 0 1 0 43884406 194011136 37282 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134538240 0 0 4096 0 0 0 0 17 1 0 0
/proc/21565/statm: 47366 37282 72 123 0 47241 0
Current children cumulated CPU time (s) 44.68
Current children cumulated vsize (KiB) 189464

[startup+46.3018 s]
/proc/loadavg: 0.85 0.95 0.97 2/78 21566
/proc/meminfo: memFree=1555600/2055920 swapFree=4148536/4192956
[pid=21565] ppid=21563 vsize=189464 CPUtime=46.28
/proc/21565/stat : 21565 (march_ks) R 21563 21565 21457 0 -1 4194304 69218 0 0 0 4599 29 0 0 25 0 1 0 43884406 194011136 37283 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134538194 0 0 4096 0 0 0 0 17 1 0 0
/proc/21565/statm: 47366 37283 72 123 0 47241 0
Current children cumulated CPU time (s) 46.28
Current children cumulated vsize (KiB) 189464

[startup+47.902 s]
/proc/loadavg: 0.85 0.95 0.97 2/78 21566
/proc/meminfo: memFree=1555600/2055920 swapFree=4148536/4192956
[pid=21565] ppid=21563 vsize=189464 CPUtime=47.88
/proc/21565/stat : 21565 (march_ks) R 21563 21565 21457 0 -1 4194304 69224 0 0 0 4759 29 0 0 25 0 1 0 43884406 194011136 37289 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134538186 0 0 4096 0 0 0 0 17 1 0 0
/proc/21565/statm: 47366 37289 72 123 0 47241 0
Current children cumulated CPU time (s) 47.88
Current children cumulated vsize (KiB) 189464

[startup+48.7011 s]
/proc/loadavg: 0.85 0.95 0.97 2/78 21566
/proc/meminfo: memFree=1555600/2055920 swapFree=4148536/4192956
[pid=21565] ppid=21563 vsize=189464 CPUtime=48.68
/proc/21565/stat : 21565 (march_ks) R 21563 21565 21457 0 -1 4195840 70142 0 0 0 4804 64 0 0 25 0 1 0 43884406 194011136 37307 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134523657 0 0 4096 0 0 0 0 17 1 0 0
/proc/21565/statm: 47366 37307 72 123 0 47241 0
Current children cumulated CPU time (s) 48.68
Current children cumulated vsize (KiB) 189464

[startup+48.9021 s]
/proc/loadavg: 0.85 0.95 0.97 2/78 21566
/proc/meminfo: memFree=1555600/2055920 swapFree=4148536/4192956
[pid=21565] ppid=21563 vsize=189464 CPUtime=48.86
/proc/21565/stat : 21565 (march_ks) R 21563 21565 21457 0 -1 4195840 72413 0 0 0 4804 82 0 0 24 0 1 0 43884406 194011136 37307 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134523657 0 0 4096 0 0 0 0 17 1 0 0
/proc/21565/statm: 47366 37307 72 123 0 47241 0
Current children cumulated CPU time (s) 48.86
Current children cumulated vsize (KiB) 189464

Child ended because it received signal 11 (SIGSEGV)
Real time (s): 48.9784
CPU time (s): 48.9426
CPU user time (s): 48.0427
CPU system time (s): 0.899863
CPU usage (%): 99.9269
Max. virtual memory (cumulated for all children) (KiB): 195220

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 48.0427
system time used= 0.899863
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 74129
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= 8
involuntary context switches= 995

runsolver used 0.068989 second user time and 0.114982 second system time

The end

Launcher Data (download as text)

Begin job on node45 on Wed Apr 18 09:59:48 UTC 2007

IDJOB= 313747
IDBENCH= 20374
IDSOLVER= 111
FILE ID= node45/313747-1176890388

PBS_JOBID= 4595162

Free space on /tmp= 66441 MiB

SOLVER NAME= March KS 2007-02-08
BENCH NAME= HOME/pub/bench/SAT07/industrial/anbulagan/hard-unsat/dated-5-15-u.cnf
COMMAND LINE= /tmp/evaluation/313747-1176890388/march_ks /tmp/evaluation/313747-1176890388/instance-313747-1176890388.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node45/watcher-313747-1176890388 -o ROOT/results/node45/solver-313747-1176890388 -C 1200 -W 2400 -M 1800 --output-limit 1,15  /tmp/evaluation/313747-1176890388/march_ks /tmp/evaluation/313747-1176890388/instance-313747-1176890388.cnf            

META MD5SUM SOLVER= cd0143c15836d32fe9acb8d523a59b67
MD5SUM BENCH=  c716daea92d5e29b94f85a19b52859ac

RANDOM SEED= 868060591

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node45.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		: 3000.218
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		: 3000.218
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:       1705200 kB
Buffers:         15628 kB
Cached:         258072 kB
SwapCached:      24412 kB
Active:          64752 kB
Inactive:       242340 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1705200 kB
SwapTotal:     4192956 kB
SwapFree:      4148536 kB
Dirty:           14692 kB
Writeback:           0 kB
Mapped:          31608 kB
Slab:            29188 kB
Committed_AS:  1119660 kB
PageTables:       1732 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= 66295 MiB

End job on node45 on Wed Apr 18 10:00:37 UTC 2007