Trace number 372018

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 2007-02-08UNSAT 9.96448 9.96862

General information on the benchmark

Namerandom/2+p/p0.8/v1295/
unif2p-p0.8-v1295-c4027-S846304296-04-UNSAT.cnf
MD5SUM6c6574c6e53b7d1ef3d1cc6ac9e5dec3
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark9.96448
Satisfiable
(Un)Satisfiability was proved
Number of variables1295
Number of clauses4026
Sum of the clauses size11273
Maximum clause length3
Minimum clause length2
Number of clauses of size 10
Number of clauses of size 2805
Number of clauses of size 33221
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data (download as text)

0.00/0.04	c main():: ***                                   [ march satisfiability solver ]                                   ***
0.00/0.04	c main()::  **            Copyright (C) 2001-2004 M. Dufour, M. Heule, J. van Zwieten and H. van Maaren            **
0.00/0.04	c main()::   * This program may be redistributed and/or modified under the terms of the GNU Gereral Public License *
0.00/0.04	c main()::
0.00/0.04	c initFormula():: searching for DIMACS p-line....
0.00/0.04	c initFormula():: the DIMACS p-line indicates a CNF of 1295 variables and 4026 clauses.
0.00/0.04	c parseCNF():: parsing....
0.00/0.04	c parseCNF():: the CNF contains 0 unary clauses.
0.00/0.04	c runParser():: parsing was successful, warming up engines...
0.00/0.04	c simplify_formula():: removed 0 tautological, 164 satisfied and 0 duplicate clauses
0.00/0.04	c preprocessing fase I completed:: there are now 1258 free variables and 3862 clauses.
0.00/0.04	c stat :: sign balance is biased by 0.688
0.00/0.04	c shorten_equivalence(): average equivalence length reduced from nan to nan
0.00/0.04	c using 3-SAT heuristics (occurence based diff)
0.00/0.04	c longest clause has size 3
0.00/0.04	c simplify_formula():: removed 0 tautological, 0 satisfied and 60 duplicate clauses
0.00/0.04	c resolvent_look() :: found 31 resolvents
0.00/0.04	c lessRedundantTransformation():: nothing to be done.
0.00/0.04	c transformTo3SAT():: you gave me 1295 variables and 3893 clauses.
0.00/0.04	c transformTo3SAT():: by the way, the maximal clause length before transformation was 3.
0.00/0.04	c transformTo3SAT():: I will add 0 variables and 0 clauses!
0.00/0.04	c transformTo3SAT():: the transformation yielded 1295 variabels and 3893 clauses.
0.00/0.04	c main():: clause / variable ratio: ( 3893 / 1295 ) = 3.01
0.00/0.04	c longest clause has size 3
0.00/0.04	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
0.00/0.04	c dynamic_preselect_setsize :: on
0.00/0.04	c suggested doublelook initial :: 0
0.00/0.04	c main():: all systems go!
0.00/0.04	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |********************************
c |****************************************************************| 0 NC: 139 JD: 6
0.99/1.06	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |********************************
c |*********************************
c |**********************************
c |************************************
c |****************************************
c |************************************************
c |*************************************************
c |**************************************************
c |****************************************************
c |********************************************************
c |*********************************************************
c |**********************************************************
c |************************************************************
c |*************************************************************
c |**************************************************************
c |***************************************************************
c |****************************************************************| 1 NC: 1138 JD: 6
4.69/4.73	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |*****************
c |******************
c |********************
c |************************
c |*************************
c |**************************
c |****************************
c |*****************************
c |******************************
c |*******************************
c |********************************
c |*********************************
c |**********************************
c |************************************
c |****************************************
c |*****************************************
c |******************************************
c |********************************************
c |*********************************************
c |**********************************************
c |***********************************************
c |************************************************
c |*************************************************
c |**************************************************
c |****************************************************
c |*****************************************************
c |******************************************************
c |*******************************************************
c |********************************************************
c |*********************************************************
c |**********************************************************
c |***********************************************************
c |************************************************************
c |*************************************************************
c |**************************************************************
c |****************************************************************| 2 NC: 1849 JD: 6
7.49/7.52	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |*********
c |**********
c |************
c |*************
c |**************
c |***************
c |****************
c |*****************
c |******************
c |********************
c |*********************
c |**********************
c |***********************
c |************************
c |*************************
c |**************************
c |***************************
c |****************************
c |*****************************
c |******************************
c |********************************
c |************************************
c |*************************************
c |**************************************
c |***************************************
c |****************************************
c |*****************************************
c |******************************************
c |*******************************************
c |********************************************
c |*********************************************
c |**********************************************
c |************************************************
c |*************************************************
c |**************************************************
c |***************************************************
c |****************************************************
c |*****************************************************
c |******************************************************
c |********************************************************
c |*********************************************************
c |**********************************************************
c |************************************************************
c |****************************************************************| 3 NC: 2204 JD: 6
9.09/9.10	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |*****
c |******
c |*******
c |********
c |*********
c |**********
c |***********
c |************
c |*************
c |**************
c |****************
c |*****************
c |******************
c |*******************
c |********************
c |*********************
c |**********************
c |************************
c |*************************
c |**************************
c |****************************
c |********************************
c |************************************
c |*************************************
c |**************************************
c |****************************************
c |*****************************************
c |******************************************
c |********************************************
c |************************************************
c |*************************************************
c |**************************************************
c |****************************************************
c |********************************************************
c |****************************************************************| 4 NC: 2304 JD: 6
9.79/9.85	c |----------------------------------------------------------------|
c |**
c |***
c |****
c |*****
c |******
c |********
c |*********
c |**********
c |************
c |****************
c |*****************
c |******************
c |********************
c |************************
c |********************************
c |****************************************************************| 5 NC: 2313 JD: 6
9.89/9.96	c |----------------------------------------------------------------|
c |
9.89/9.96	c
9.89/9.96	c main():: nodeCount: 2313
9.89/9.96	c main():: dead ends in main: 4
9.89/9.96	c main():: lookAheadCount: 1229971
9.89/9.96	c main():: unitResolveCount: 57586
9.89/9.96	c main():: time=9.950000
9.89/9.96	c main():: necessary_assignments: 1253
9.89/9.96	c main():: bin_sat: 0, bin_unsat 0
9.89/9.96	c main():: doublelook: #: 21857, succes #: 17548
9.89/9.96	c main():: doublelook: overall 1.796 of all possible doublelooks executed
9.89/9.96	c main():: doublelook: succesrate: 80.285, average DL_trigger: 8891.943
9.89/9.96	s UNSATISFIABLE

Verifier Data (download as text)

No possible verification on an UNSAT instance

Watcher Data (download as text)

runsolver version 3.2.3 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node63/watcher-372018-1177549347 -o ROOT/results/node63/solver-372018-1177549347 -C 5000 -W 7500 -M 1800 --output-limit 1,15 /tmp/evaluation/372018-1177549347/march_ks /tmp/evaluation/372018-1177549347/instance-372018-1177549347.cnf 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 5000 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 5030 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 7500 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: 0.41 0.79 0.85 3/64 8855
/proc/meminfo: memFree=1656492/2055920 swapFree=4182896/4192956
[pid=8855] ppid=8853 vsize=788 CPUtime=0
/proc/8855/stat : 8855 (march_ks) R 8853 8855 7773 0 -1 4194304 114 0 0 0 0 0 0 0 18 0 1 0 230924647 806912 100 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134662703 0 0 4096 0 0 0 0 17 1 0 0
/proc/8855/statm: 197 100 47 123 0 72 0

[startup+0.0783441 s]
/proc/loadavg: 0.41 0.79 0.85 3/64 8855
/proc/meminfo: memFree=1656492/2055920 swapFree=4182896/4192956
[pid=8855] ppid=8853 vsize=2168 CPUtime=0.07
/proc/8855/stat : 8855 (march_ks) R 8853 8855 7773 0 -1 4194304 462 0 0 0 7 0 0 0 18 0 1 0 230924647 2220032 445 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134538215 0 0 4096 0 0 0 0 17 1 0 0
/proc/8855/statm: 542 445 73 123 0 417 0
Current children cumulated CPU time (s) 0.07
Current children cumulated vsize (KiB) 2168

[startup+0.101346 s]
/proc/loadavg: 0.41 0.79 0.85 3/64 8855
/proc/meminfo: memFree=1656492/2055920 swapFree=4182896/4192956
[pid=8855] ppid=8853 vsize=2168 CPUtime=0.09
/proc/8855/stat : 8855 (march_ks) R 8853 8855 7773 0 -1 4194304 462 0 0 0 9 0 0 0 18 0 1 0 230924647 2220032 445 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134526436 0 0 4096 0 0 0 0 17 1 0 0
/proc/8855/statm: 542 445 73 123 0 417 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 2168

[startup+0.301367 s]
/proc/loadavg: 0.41 0.79 0.85 3/64 8855
/proc/meminfo: memFree=1656492/2055920 swapFree=4182896/4192956
[pid=8855] ppid=8853 vsize=2168 CPUtime=0.29
/proc/8855/stat : 8855 (march_ks) R 8853 8855 7773 0 -1 4194304 462 0 0 0 29 0 0 0 19 0 1 0 230924647 2220032 445 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134538258 0 0 4096 0 0 0 0 17 1 0 0
/proc/8855/statm: 542 445 73 123 0 417 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 2168

[startup+0.701409 s]
/proc/loadavg: 0.41 0.79 0.85 3/64 8855
/proc/meminfo: memFree=1656492/2055920 swapFree=4182896/4192956
[pid=8855] ppid=8853 vsize=2168 CPUtime=0.69
/proc/8855/stat : 8855 (march_ks) R 8853 8855 7773 0 -1 4194304 473 0 0 0 69 0 0 0 23 0 1 0 230924647 2220032 456 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134526505 0 0 4096 0 0 0 0 17 1 0 0
/proc/8855/statm: 542 456 73 123 0 417 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 2168

[startup+1.50149 s]
/proc/loadavg: 0.41 0.79 0.85 2/65 8856
/proc/meminfo: memFree=1654820/2055920 swapFree=4182896/4192956
[pid=8855] ppid=8853 vsize=2300 CPUtime=1.49
/proc/8855/stat : 8855 (march_ks) R 8853 8855 7773 0 -1 4194304 496 0 0 0 149 0 0 0 25 0 1 0 230924647 2355200 479 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134526481 0 0 4096 0 0 0 0 17 1 0 0
/proc/8855/statm: 575 479 73 123 0 450 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 2300

[startup+3.10166 s]
/proc/loadavg: 0.41 0.79 0.85 2/65 8856
/proc/meminfo: memFree=1654564/2055920 swapFree=4182896/4192956
[pid=8855] ppid=8853 vsize=2432 CPUtime=3.09
/proc/8855/stat : 8855 (march_ks) R 8853 8855 7773 0 -1 4194304 519 0 0 0 309 0 0 0 25 0 1 0 230924647 2490368 502 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134542945 0 0 4096 0 0 0 0 17 1 0 0
/proc/8855/statm: 608 502 73 123 0 483 0
Current children cumulated CPU time (s) 3.09
Current children cumulated vsize (KiB) 2432

[startup+6.302 s]
/proc/loadavg: 0.46 0.79 0.85 2/65 8856
/proc/meminfo: memFree=1654444/2055920 swapFree=4182896/4192956
[pid=8855] ppid=8853 vsize=2560 CPUtime=6.29
/proc/8855/stat : 8855 (march_ks) R 8853 8855 7773 0 -1 4194304 541 0 0 0 629 0 0 0 25 0 1 0 230924647 2621440 524 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134589731 0 0 4096 0 0 0 0 17 1 0 0
/proc/8855/statm: 640 524 73 123 0 515 0
Current children cumulated CPU time (s) 6.29
Current children cumulated vsize (KiB) 2560

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

[startup+7.90117 s]
/proc/loadavg: 0.46 0.79 0.85 2/65 8856
/proc/meminfo: memFree=1654444/2055920 swapFree=4182896/4192956
[pid=8855] ppid=8853 vsize=2560 CPUtime=7.89
/proc/8855/stat : 8855 (march_ks) R 8853 8855 7773 0 -1 4194304 547 0 0 0 789 0 0 0 25 0 1 0 230924647 2621440 530 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134526505 0 0 4096 0 0 0 0 17 1 0 0
/proc/8855/statm: 640 530 73 123 0 515 0
Current children cumulated CPU time (s) 7.89
Current children cumulated vsize (KiB) 2560

[startup+8.70125 s]
/proc/loadavg: 0.50 0.80 0.85 2/65 8856
/proc/meminfo: memFree=1654444/2055920 swapFree=4182896/4192956
[pid=8855] ppid=8853 vsize=2560 CPUtime=8.69
/proc/8855/stat : 8855 (march_ks) R 8853 8855 7773 0 -1 4194304 552 0 0 0 869 0 0 0 25 0 1 0 230924647 2621440 535 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134538194 0 0 4096 0 0 0 0 17 1 0 0
/proc/8855/statm: 640 535 73 123 0 515 0
Current children cumulated CPU time (s) 8.69
Current children cumulated vsize (KiB) 2560

[startup+9.50134 s]
/proc/loadavg: 0.50 0.80 0.85 2/65 8856
/proc/meminfo: memFree=1654444/2055920 swapFree=4182896/4192956
[pid=8855] ppid=8853 vsize=2560 CPUtime=9.49
/proc/8855/stat : 8855 (march_ks) R 8853 8855 7773 0 -1 4194304 553 0 0 0 949 0 0 0 25 0 1 0 230924647 2621440 536 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134526533 0 0 4096 0 0 0 0 17 1 0 0
/proc/8855/statm: 640 536 73 123 0 515 0
Current children cumulated CPU time (s) 9.49
Current children cumulated vsize (KiB) 2560

[startup+9.90538 s]
/proc/loadavg: 0.50 0.80 0.85 2/65 8856
/proc/meminfo: memFree=1654380/2055920 swapFree=4182896/4192956
[pid=8855] ppid=8853 vsize=2560 CPUtime=9.89
/proc/8855/stat : 8855 (march_ks) R 8853 8855 7773 0 -1 4194304 553 0 0 0 989 0 0 0 25 0 1 0 230924647 2621440 536 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134526510 0 0 4096 0 0 0 0 17 1 0 0
/proc/8855/statm: 640 536 73 123 0 515 0
Current children cumulated CPU time (s) 9.89
Current children cumulated vsize (KiB) 2560

Child status: 20
Real time (s): 9.96862
CPU time (s): 9.96448
CPU user time (s): 9.95549
CPU system time (s): 0.008998
CPU usage (%): 99.9585
Max. virtual memory (cumulated for all children) (KiB): 2560

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 9.95549
system time used= 0.008998
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 554
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= 27

runsolver used 0.010998 second user time and 0.024996 second system time

The end

Launcher Data (download as text)

Begin job on node63 on Thu Apr 26 01:02:27 UTC 2007

IDJOB= 372018
IDBENCH= 20298
IDSOLVER= 180
FILE ID= node63/372018-1177549347

PBS_JOBID= 4696541

Free space on /tmp= 66486 MiB

SOLVER NAME= March KS 2007-02-08
BENCH NAME= HOME/pub/bench/SAT07/random/2+p/p0.8/v1295/unif2p-p0.8-v1295-c4027-S846304296-04-UNSAT.cnf
COMMAND LINE= /tmp/evaluation/372018-1177549347/march_ks /tmp/evaluation/372018-1177549347/instance-372018-1177549347.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node63/watcher-372018-1177549347 -o ROOT/results/node63/solver-372018-1177549347 -C 5000 -W 7500 -M 1800 --output-limit 1,15  /tmp/evaluation/372018-1177549347/march_ks /tmp/evaluation/372018-1177549347/instance-372018-1177549347.cnf            

META MD5SUM SOLVER= d41d8cd98f00b204e9800998ecf8427e
MD5SUM BENCH=  6c6574c6e53b7d1ef3d1cc6ac9e5dec3

RANDOM SEED= 798237788

TIME LIMIT= 5000 seconds
MEMORY LIMIT= 1800 MiB

Linux node63.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:       1656900 kB
Buffers:         29252 kB
Cached:         307348 kB
SwapCached:       4556 kB
Active:         187052 kB
Inactive:       159872 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1656900 kB
SwapTotal:     4192956 kB
SwapFree:      4182896 kB
Dirty:            2348 kB
Writeback:           0 kB
Mapped:          15576 kB
Slab:            38044 kB
Committed_AS:  2251536 kB
PageTables:       1460 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= 66486 MiB

End job on node63 on Thu Apr 26 01:02:37 UTC 2007