Trace number 313947

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 65.745 65.8095

General information on the benchmark

Nameindustrial/anbulagan/
hard-unsat/dated-5-17-u.cnf
MD5SUM83ece6745238c422c7e68e5a07fc7f73
Bench CategoryINDUST (industrial instances)
Best result obtained on this benchmark
Best CPU time to get the best result obtained on this benchmark
Satisfiable
(Un)Satisfiability was proved
Number of variables183464
Number of clauses855717
Sum of the clauses size1974802
Maximum clause length10
Minimum clause length1
Number of clauses of size 115316
Number of clauses of size 2664917
Number of clauses of size 3141084
Number of clauses of size 43820
Number of clauses of size 515280
Number of clauses of size over 515300

Solver Data (download as text)

11.38/11.46	c main():: ***                                   [ march satisfiability solver ]                                   ***
11.38/11.46	c main()::  **            Copyright (C) 2001-2004 M. Dufour, M. Heule, J. van Zwieten and H. van Maaren            **
11.38/11.46	c main()::   * This program may be redistributed and/or modified under the terms of the GNU Gereral Public License *
11.38/11.46	c main()::
11.38/11.46	c initFormula():: searching for DIMACS p-line....
11.38/11.46	c initFormula():: the DIMACS p-line indicates a CNF of 183464 variables and 855717 clauses.
11.38/11.46	c parseCNF():: parsing....
11.38/11.46	c parseCNF():: the CNF contains 15316 unary clauses.
11.38/11.46	c runParser():: parsing was successful, warming up engines...
11.38/11.46	c find_and_remove_tautogolies():: found and removed 26379 tautologies
11.38/11.46	c find_and_remove_tautogolies():: found and removed 103 tautologies
11.38/11.46	c simplify_formula():: removed 227 tautological, 278333 satisfied and 17220 duplicate clauses
11.38/11.46	c preprocessing fase I completed:: there are now 100680 free variables and 559937 clauses.
11.38/11.46	c stat :: sign balance is biased by 0.945
11.38/11.46	c shorten_equivalence(): average equivalence length reduced from nan to nan
11.38/11.46	c using k-SAT heuristics (size based diff)
11.38/11.46	c longest clause has size 10
11.38/11.46	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
11.38/11.46	c main():: clause / variable ratio: ( 559937 / 183464 ) = 3.05
11.38/11.46	c longest clause has size 10
11.38/11.46	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
11.38/11.46	c dynamic_preselect_setsize :: on
11.38/11.46	c suggested doublelook initial :: 0
11.38/11.46	c main():: all systems go!
11.38/11.46	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/node59/watcher-313947-1176893742 -o ROOT/results/node59/solver-313947-1176893742 -C 1200 -W 2400 -M 1800 --output-limit 1,15 /tmp/evaluation/313947-1176893742/march_ks /tmp/evaluation/313947-1176893742/instance-313947-1176893742.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: 0.92 0.95 0.96 3/64 2838
/proc/meminfo: memFree=1688760/2055920 swapFree=4184740/4192956
[pid=2838] ppid=2836 vsize=4720 CPUtime=0
/proc/2838/stat : 2838 (march_ks) R 2836 2838 2637 0 -1 4194304 736 0 0 0 0 0 0 0 18 0 1 0 137283854 4833280 722 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134557383 0 0 4096 0 0 0 0 17 1 0 0
/proc/2838/statm: 1180 727 45 123 0 1055 0

[startup+0.075518 s]
/proc/loadavg: 0.92 0.95 0.96 3/64 2838
/proc/meminfo: memFree=1688760/2055920 swapFree=4184740/4192956
[pid=2838] ppid=2836 vsize=22200 CPUtime=0.07
/proc/2838/stat : 2838 (march_ks) R 2836 2838 2637 0 -1 4194304 4490 0 0 0 5 2 0 0 18 0 1 0 137283854 22732800 4475 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134557851 0 0 4096 0 0 0 0 17 1 0 0
/proc/2838/statm: 5550 4475 47 123 0 5425 0
Current children cumulated CPU time (s) 0.07
Current children cumulated vsize (KiB) 22200

[startup+0.10152 s]
/proc/loadavg: 0.92 0.95 0.96 3/64 2838
/proc/meminfo: memFree=1688760/2055920 swapFree=4184740/4192956
[pid=2838] ppid=2836 vsize=22596 CPUtime=0.09
/proc/2838/stat : 2838 (march_ks) R 2836 2838 2637 0 -1 4194304 4612 0 0 0 7 2 0 0 18 0 1 0 137283854 23138304 4597 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134662703 0 0 4096 0 0 0 0 17 1 0 0
/proc/2838/statm: 5649 4597 47 123 0 5524 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 22596

[startup+0.301558 s]
/proc/loadavg: 0.92 0.95 0.96 3/64 2838
/proc/meminfo: memFree=1688760/2055920 swapFree=4184740/4192956
[pid=2838] ppid=2836 vsize=25500 CPUtime=0.29
/proc/2838/stat : 2838 (march_ks) R 2836 2838 2637 0 -1 4194304 5508 0 0 0 27 2 0 0 19 0 1 0 137283854 26112000 5493 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134684029 0 0 4096 0 0 0 0 17 1 0 0
/proc/2838/statm: 6375 5493 47 123 0 6250 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 25500

[startup+0.701634 s]
/proc/loadavg: 0.92 0.95 0.96 3/64 2838
/proc/meminfo: memFree=1688760/2055920 swapFree=4184740/4192956
[pid=2838] ppid=2836 vsize=31044 CPUtime=0.69
/proc/2838/stat : 2838 (march_ks) R 2836 2838 2637 0 -1 4194304 7224 0 0 0 66 3 0 0 22 0 1 0 137283854 31789056 7209 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134662703 0 0 4096 0 0 0 0 17 1 0 0
/proc/2838/statm: 7761 7209 47 123 0 7636 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 31044

[startup+1.50179 s]
/proc/loadavg: 0.92 0.95 0.96 2/65 2839
/proc/meminfo: memFree=1655216/2055920 swapFree=4184740/4192956
[pid=2838] ppid=2836 vsize=86280 CPUtime=1.49
/proc/2838/stat : 2838 (march_ks) R 2836 2838 2637 0 -1 4194304 16122 0 0 0 141 8 0 0 25 0 1 0 137283854 88350720 14324 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134561718 0 0 4096 0 0 0 0 17 1 0 0
/proc/2838/statm: 21570 14324 49 123 0 21445 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 86280

[startup+3.10109 s]
/proc/loadavg: 0.92 0.95 0.96 2/65 2839
/proc/meminfo: memFree=1618480/2055920 swapFree=4184740/4192956
[pid=2838] ppid=2836 vsize=94396 CPUtime=3.08
/proc/2838/stat : 2838 (march_ks) R 2836 2838 2637 0 -1 4194304 22753 0 0 0 297 11 0 0 25 0 1 0 137283854 96661504 17011 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134667870 0 0 4096 0 0 0 0 17 1 0 0
/proc/2838/statm: 23599 17011 52 123 0 23474 0
Current children cumulated CPU time (s) 3.08
Current children cumulated vsize (KiB) 94396

[startup+6.3017 s]
/proc/loadavg: 0.93 0.95 0.96 2/65 2839
/proc/meminfo: memFree=1620088/2055920 swapFree=4184740/4192956
[pid=2838] ppid=2836 vsize=97848 CPUtime=6.28
/proc/2838/stat : 2838 (march_ks) R 2836 2838 2637 0 -1 4194304 31935 0 0 0 612 16 0 0 25 0 1 0 137283854 100196352 17423 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134554651 0 0 4096 0 0 0 0 17 1 0 0
/proc/2838/statm: 24462 17423 63 123 0 24337 0
Current children cumulated CPU time (s) 6.28
Current children cumulated vsize (KiB) 97848

[startup+12.7019 s]
/proc/loadavg: 0.93 0.96 0.96 2/65 2839
/proc/meminfo: memFree=1510024/2055920 swapFree=4184740/4192956
[pid=2838] ppid=2836 vsize=227892 CPUtime=12.67
/proc/2838/stat : 2838 (march_ks) R 2836 2838 2637 0 -1 4194304 84028 0 0 0 1230 37 0 0 25 0 1 0 137283854 233361408 44655 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134526968 0 0 4096 0 0 0 0 17 1 0 0
/proc/2838/statm: 56973 44655 72 123 0 56848 0
Current children cumulated CPU time (s) 12.67
Current children cumulated vsize (KiB) 227892

[startup+25.5014 s]
/proc/loadavg: 0.95 0.96 0.96 2/65 2839
/proc/meminfo: memFree=1510152/2055920 swapFree=4184740/4192956
[pid=2838] ppid=2836 vsize=227892 CPUtime=25.47
/proc/2838/stat : 2838 (march_ks) R 2836 2838 2637 0 -1 4194304 84040 0 0 0 2510 37 0 0 25 0 1 0 137283854 233361408 44667 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134526970 0 0 4096 0 0 0 0 17 1 0 0
/proc/2838/statm: 56973 44667 72 123 0 56848 0
Current children cumulated CPU time (s) 25.47
Current children cumulated vsize (KiB) 227892

[startup+51.1012 s]
/proc/loadavg: 0.96 0.96 0.96 2/65 2839
/proc/meminfo: memFree=1502408/2055920 swapFree=4184740/4192956
[pid=2838] ppid=2836 vsize=236016 CPUtime=51.04
/proc/2838/stat : 2838 (march_ks) R 2836 2838 2637 0 -1 4194304 85986 0 0 0 5065 39 0 0 25 0 1 0 137283854 241680384 46613 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134538142 0 0 4096 0 0 0 0 17 1 0 0
/proc/2838/statm: 59004 46613 72 123 0 58879 0
Current children cumulated CPU time (s) 51.04
Current children cumulated vsize (KiB) 236016

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

[startup+57.5014 s]
/proc/loadavg: 0.97 0.96 0.96 2/65 2839
/proc/meminfo: memFree=1502408/2055920 swapFree=4184740/4192956
[pid=2838] ppid=2836 vsize=236016 CPUtime=57.44
/proc/2838/stat : 2838 (march_ks) R 2836 2838 2637 0 -1 4194304 85988 0 0 0 5705 39 0 0 25 0 1 0 137283854 241680384 46615 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134538152 0 0 4096 0 0 0 0 17 1 0 0
/proc/2838/statm: 59004 46615 72 123 0 58879 0
Current children cumulated CPU time (s) 57.44
Current children cumulated vsize (KiB) 236016

[startup+60.701 s]
/proc/loadavg: 0.97 0.96 0.96 2/65 2839
/proc/meminfo: memFree=1502408/2055920 swapFree=4184740/4192956
[pid=2838] ppid=2836 vsize=236016 CPUtime=60.64
/proc/2838/stat : 2838 (march_ks) R 2836 2838 2637 0 -1 4194304 85988 0 0 0 6025 39 0 0 25 0 1 0 137283854 241680384 46615 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134538181 0 0 4096 0 0 0 0 17 1 0 0
/proc/2838/statm: 59004 46615 72 123 0 58879 0
Current children cumulated CPU time (s) 60.64
Current children cumulated vsize (KiB) 236016

[startup+63.9017 s]
/proc/loadavg: 0.97 0.96 0.96 2/65 2839
/proc/meminfo: memFree=1502344/2055920 swapFree=4184740/4192956
[pid=2838] ppid=2836 vsize=236016 CPUtime=63.84
/proc/2838/stat : 2838 (march_ks) R 2836 2838 2637 0 -1 4194304 85990 0 0 0 6345 39 0 0 25 0 1 0 137283854 241680384 46617 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134538578 0 0 4096 0 0 0 0 17 1 0 0
/proc/2838/statm: 59004 46617 72 123 0 58879 0
Current children cumulated CPU time (s) 63.84
Current children cumulated vsize (KiB) 236016

[startup+64.7028 s]
/proc/loadavg: 0.97 0.96 0.96 2/65 2839
/proc/meminfo: memFree=1502344/2055920 swapFree=4184740/4192956
[pid=2838] ppid=2836 vsize=236016 CPUtime=64.64
/proc/2838/stat : 2838 (march_ks) R 2836 2838 2637 0 -1 4194304 85990 0 0 0 6425 39 0 0 25 0 1 0 137283854 241680384 46617 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134538257 0 0 4096 0 0 0 0 17 1 0 0
/proc/2838/statm: 59004 46617 72 123 0 58879 0
Current children cumulated CPU time (s) 64.64
Current children cumulated vsize (KiB) 236016

[startup+65.502 s]
/proc/loadavg: 0.97 0.96 0.96 2/65 2839
/proc/meminfo: memFree=1502344/2055920 swapFree=4184740/4192956
[pid=2838] ppid=2836 vsize=236152 CPUtime=65.43
/proc/2838/stat : 2838 (march_ks) R 2836 2838 2637 0 -1 4195840 87082 0 0 0 6458 85 0 0 25 0 1 0 137283854 241819648 46651 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134523657 0 0 4096 0 0 0 0 17 1 0 0
/proc/2838/statm: 59038 46651 72 123 0 58913 0
Current children cumulated CPU time (s) 65.43
Current children cumulated vsize (KiB) 236152

[startup+65.702 s]
/proc/loadavg: 0.97 0.96 0.96 2/65 2839
/proc/meminfo: memFree=1502344/2055920 swapFree=4184740/4192956
[pid=2838] ppid=2836 vsize=236152 CPUtime=65.62
/proc/2838/stat : 2838 (march_ks) R 2836 2838 2637 0 -1 4195840 89079 0 0 0 6458 104 0 0 24 0 1 0 137283854 241819648 46651 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134523657 0 0 4096 0 0 0 0 17 1 0 0
/proc/2838/statm: 59038 46651 72 123 0 58913 0
Current children cumulated CPU time (s) 65.62
Current children cumulated vsize (KiB) 236152

[startup+65.802 s]
/proc/loadavg: 0.97 0.96 0.96 2/65 2839
/proc/meminfo: memFree=1502344/2055920 swapFree=4184740/4192956
[pid=2838] ppid=2836 vsize=0 CPUtime=65.72
/proc/2838/stat : 2838 (march_ks) R 2836 2838 2637 0 -1 4195844 91703 0 0 0 6458 114 0 0 25 0 1 0 137283854 0 0 18446744073709551615 0 0 0 0 0 0 0 4096 0 0 0 0 17 1 0 0
/proc/2838/statm: 0 0 0 0 0 0 0
Current children cumulated CPU time (s) 65.72
Current children cumulated vsize (KiB) 0

Child ended because it received signal 11 (SIGSEGV)
Real time (s): 65.8095
CPU time (s): 65.745
CPU user time (s): 64.5892
CPU system time (s): 1.15582
CPU usage (%): 99.902
Max. virtual memory (cumulated for all children) (KiB): 238712

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 64.5892
system time used= 1.15582
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 91703
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= 111

runsolver used 0.046992 second user time and 0.146977 second system time

The end

Launcher Data (download as text)

Begin job on node59 on Wed Apr 18 10:55:42 UTC 2007

IDJOB= 313947
IDBENCH= 20379
IDSOLVER= 111
FILE ID= node59/313947-1176893742

PBS_JOBID= 4595170

Free space on /tmp= 66313 MiB

SOLVER NAME= March KS 2007-02-08
BENCH NAME= HOME/pub/bench/SAT07/industrial/anbulagan/hard-unsat/dated-5-17-u.cnf
COMMAND LINE= /tmp/evaluation/313947-1176893742/march_ks /tmp/evaluation/313947-1176893742/instance-313947-1176893742.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node59/watcher-313947-1176893742 -o ROOT/results/node59/solver-313947-1176893742 -C 1200 -W 2400 -M 1800 --output-limit 1,15  /tmp/evaluation/313947-1176893742/march_ks /tmp/evaluation/313947-1176893742/instance-313947-1176893742.cnf            

META MD5SUM SOLVER= cd0143c15836d32fe9acb8d523a59b67
MD5SUM BENCH=  83ece6745238c422c7e68e5a07fc7f73

RANDOM SEED= 925144245

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node59.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		: 3000.268
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		: 3000.268
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:       1689232 kB
Buffers:          5540 kB
Cached:         288644 kB
SwapCached:       2160 kB
Active:          93424 kB
Inactive:       210332 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1689232 kB
SwapTotal:     4192956 kB
SwapFree:      4184740 kB
Dirty:           17580 kB
Writeback:           0 kB
Mapped:          16660 kB
Slab:            48944 kB
Committed_AS:  1609392 kB
PageTables:       1472 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= 66131 MiB

End job on node59 on Wed Apr 18 10:56:48 UTC 2007