Trace number 310458

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 4.09138 4.10589

General information on the benchmark

Namerandom/2+p/p0.9/v630/
unif2p-p0.9-v630-c2280-S779175761-20-UNSAT.cnf
MD5SUMe4a16dbebaf749785d32ea7331a934fc
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark4.09138
Satisfiable
(Un)Satisfiability was proved
Number of variables630
Number of clauses2280
Sum of the clauses size6612
Maximum clause length3
Minimum clause length2
Number of clauses of size 10
Number of clauses of size 2228
Number of clauses of size 32052
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data (download as text)

0.00/0.02	c main():: ***                                   [ march satisfiability solver ]                                   ***
0.00/0.02	c main()::  **            Copyright (C) 2001-2004 M. Dufour, M. Heule, J. van Zwieten and H. van Maaren            **
0.00/0.02	c main()::   * This program may be redistributed and/or modified under the terms of the GNU Gereral Public License *
0.00/0.02	c main()::
0.00/0.02	c initFormula():: searching for DIMACS p-line....
0.00/0.02	c initFormula():: the DIMACS p-line indicates a CNF of 630 variables and 2280 clauses.
0.00/0.02	c parseCNF():: parsing....
0.00/0.02	c parseCNF():: the CNF contains 0 unary clauses.
0.00/0.02	c runParser():: parsing was successful, warming up engines...
0.00/0.02	c simplify_formula():: removed 0 tautological, 10 satisfied and 0 duplicate clauses
0.00/0.02	c preprocessing fase I completed:: there are now 628 free variables and 2270 clauses.
0.00/0.02	c stat :: sign balance is biased by 0.568
0.00/0.02	c shorten_equivalence(): average equivalence length reduced from nan to nan
0.00/0.02	c using 3-SAT heuristics (occurence based diff)
0.00/0.02	c longest clause has size 3
0.00/0.02	c simplify_formula():: removed 0 tautological, 0 satisfied and 100 duplicate clauses
0.00/0.02	c resolvent_look() :: found 52 resolvents
0.00/0.02	c lessRedundantTransformation():: nothing to be done.
0.00/0.02	c transformTo3SAT():: you gave me 630 variables and 2322 clauses.
0.00/0.02	c transformTo3SAT():: by the way, the maximal clause length before transformation was 3.
0.00/0.02	c transformTo3SAT():: I will add 0 variables and 0 clauses!
0.00/0.02	c transformTo3SAT():: the transformation yielded 630 variabels and 2322 clauses.
0.00/0.02	c main():: clause / variable ratio: ( 2322 / 630 ) = 3.69
0.00/0.02	c longest clause has size 3
0.00/0.02	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
0.00/0.02	c dynamic_preselect_setsize :: off
0.00/0.02	c suggested doublelook initial :: 0
0.00/0.02	c main():: all systems go!
0.00/0.02	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |********************************
c |****************************************************************| 0 NC: 111 JD: 10
0.10/0.11	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: 688 JD: 10
0.61/0.65	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |*****************
c |******************
c |********************
c |************************
c |*************************
c |**************************
c |****************************
c |*****************************
c |******************************
c |*******************************
c |********************************
c |*********************************
c |**********************************
c |************************************
c |****************************************
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c |******************************************
c |********************************************
c |*********************************************
c |**********************************************
c |***********************************************
c |************************************************
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c |****************************************************
c |*****************************************************
c |******************************************************
c |*******************************************************
c |********************************************************
c |*********************************************************
c |**********************************************************
c |***********************************************************
c |************************************************************
c |*************************************************************
c |**************************************************************
c |***************************************************************
c |****************************************************************| 2 NC: 2100 JD: 10
1.94/1.97	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 |****************************************
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c |******************************************
c |*******************************************
c |********************************************
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c |**********************************************
c |***********************************************
c |************************************************
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c |******************************************************
c |*******************************************************
c |********************************************************
c |*********************************************************
c |**********************************************************
c |***********************************************************
c |************************************************************
c |*************************************************************
c |**************************************************************
c |***************************************************************
c |****************************************************************| 3 NC: 3114 JD: 10
2.86/2.92	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 |*************************************************
c |**************************************************
c |***************************************************
c |****************************************************
c |*****************************************************
c |******************************************************
c |*******************************************************
c |********************************************************
c |*********************************************************
c |**********************************************************
c |***********************************************************
c |************************************************************
c |*************************************************************
c |**************************************************************
c |***************************************************************
c |****************************************************************| 4 NC: 3857 JD: 10
3.57/3.66	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 |************************************************
c |*************************************************
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c |***************************************************
c |****************************************************
c |*****************************************************
c |******************************************************
c |*******************************************************
c |********************************************************
c |*********************************************************
c |**********************************************************
c |***********************************************************
c |************************************************************
c |*************************************************************
c |**************************************************************
c |****************************************************************| 5 NC: 4164 JD: 10
3.97/4.01	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 |****************************************************************| 6 NC: 4238 JD: 10
3.97/4.09	c |----------------------------------------------------------------|
c |**
c |***
c |****
c |********
c |****************
c |********************************
c |*********************************
c |**********************************
c |************************************
c |****************************************
c |*****************************************
c |******************************************
c |********************************************
c |************************************************
c |****************************************************************| 7 NC: 4245 JD: 10
4.07/4.10	c |----------------------------------------------------------------|
c |
4.07/4.10	c
4.07/4.10	c main():: nodeCount: 4245
4.07/4.10	c main():: dead ends in main: 18
4.07/4.10	c main():: lookAheadCount: 528718
4.07/4.10	c main():: unitResolveCount: 72360
4.07/4.10	c main():: time=4.080000
4.07/4.10	c main():: necessary_assignments: 1517
4.07/4.10	c main():: bin_sat: 0, bin_unsat 0
4.07/4.10	c main():: doublelook: #: 22993, succes #: 17586
4.07/4.10	c main():: doublelook: overall 4.460 of all possible doublelooks executed
4.07/4.10	c main():: doublelook: succesrate: 76.484, average DL_trigger: 7557.712
4.07/4.10	s UNSATISFIABLE

Verifier Data (download as text)

No possible verification on an UNSAT instance

Watcher Data (download as text)

runsolver version 3.2.0 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node42/watcher-310458-1172559745 -o ROOT/results/node42/solver-310458-1172559745 -C 1200 -M 1800 --output-limit 1,15 /tmp/evaluation/310458-1172559745/march_ks /tmp/evaluation/310458-1172559745/instance-310458-1172559745.cnf 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1230 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: 0.97 0.98 0.99 3/70 8964
/proc/meminfo: memFree=1816808/2055920 swapFree=4182516/4192956
[pid=8964] ppid=8962 vsize=928 CPUtime=0
/proc/8964/stat : 8964 (march_ks) R 8962 8964 8559 0 -1 4194304 138 0 0 0 0 0 0 0 18 0 1 0 275930536 950272 120 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134561792 0 0 4096 0 0 0 0 17 1 0 0
/proc/8964/statm: 232 120 50 123 0 107 0

[startup+0.107314 s]
/proc/loadavg: 0.97 0.98 0.99 3/70 8964
/proc/meminfo: memFree=1816808/2055920 swapFree=4182516/4192956
[pid=8964] ppid=8962 vsize=1512 CPUtime=0.1
/proc/8964/stat : 8964 (march_ks) R 8962 8964 8559 0 -1 4194304 302 0 0 0 10 0 0 0 18 0 1 0 275930536 1548288 284 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134538186 0 0 4096 0 0 0 0 17 1 0 0
/proc/8964/statm: 378 284 73 123 0 253 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 1512

[startup+0.518393 s]
/proc/loadavg: 0.97 0.98 0.99 3/70 8964
/proc/meminfo: memFree=1816808/2055920 swapFree=4182516/4192956
[pid=8964] ppid=8962 vsize=1512 CPUtime=0.51
/proc/8964/stat : 8964 (march_ks) R 8962 8964 8559 0 -1 4194304 321 0 0 0 51 0 0 0 21 0 1 0 275930536 1548288 303 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134542580 0 0 4096 0 0 0 0 17 1 0 0
/proc/8964/statm: 378 303 73 123 0 253 0
Current children cumulated CPU time (s) 0.51
Current children cumulated vsize (KiB) 1512

[startup+1.33855 s]
/proc/loadavg: 0.97 0.98 0.99 2/71 8967
/proc/meminfo: memFree=1815776/2055920 swapFree=4182516/4192956
[pid=8964] ppid=8962 vsize=1644 CPUtime=1.33
/proc/8964/stat : 8964 (march_ks) R 8962 8964 8559 0 -1 4194304 333 0 0 0 133 0 0 0 25 0 1 0 275930536 1683456 315 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134598726 0 0 4096 0 0 0 0 17 1 0 0
/proc/8964/statm: 411 315 73 123 0 286 0
Current children cumulated CPU time (s) 1.33
Current children cumulated vsize (KiB) 1644

[startup+2.97486 s]
/proc/loadavg: 0.97 0.98 0.99 2/71 8967
/proc/meminfo: memFree=1815648/2055920 swapFree=4182516/4192956
[pid=8964] ppid=8962 vsize=1644 CPUtime=2.96
/proc/8964/stat : 8964 (march_ks) R 8962 8964 8559 0 -1 4194304 347 0 0 0 296 0 0 0 25 0 1 0 275930536 1683456 329 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134579047 0 0 4096 0 0 0 0 17 1 0 0
/proc/8964/statm: 411 329 73 123 0 286 0
Current children cumulated CPU time (s) 2.96
Current children cumulated vsize (KiB) 1644

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

[startup+3.28093 s]
/proc/loadavg: 0.97 0.98 0.99 2/71 8967
/proc/meminfo: memFree=1815648/2055920 swapFree=4182516/4192956
[pid=8964] ppid=8962 vsize=1644 CPUtime=3.26
/proc/8964/stat : 8964 (march_ks) R 8962 8964 8559 0 -1 4194304 350 0 0 0 326 0 0 0 25 0 1 0 275930536 1683456 332 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134542945 0 0 4096 0 0 0 0 17 1 0 0
/proc/8964/statm: 411 332 73 123 0 286 0
Current children cumulated CPU time (s) 3.26
Current children cumulated vsize (KiB) 1644

[startup+3.693 s]
/proc/loadavg: 0.97 0.98 0.99 2/65 8987
/proc/meminfo: memFree=1816592/2055920 swapFree=4182516/4192956
[pid=8964] ppid=8962 vsize=1644 CPUtime=3.67
/proc/8964/stat : 8964 (march_ks) R 8962 8964 8559 0 -1 4194304 353 0 0 0 367 0 0 0 25 0 1 0 275930536 1683456 335 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134548025 0 0 4096 0 0 0 0 17 1 0 0
/proc/8964/statm: 411 335 73 123 0 286 0
Current children cumulated CPU time (s) 3.67
Current children cumulated vsize (KiB) 1644

[startup+4.10108 s]
/proc/loadavg: 0.97 0.98 0.99 2/65 8987
/proc/meminfo: memFree=1816592/2055920 swapFree=4182516/4192956
[pid=8964] ppid=8962 vsize=1644 CPUtime=4.07
/proc/8964/stat : 8964 (march_ks) R 8962 8964 8559 0 -1 4194304 357 0 0 0 407 0 0 0 25 0 1 0 275930536 1683456 339 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134526451 0 0 4096 0 0 0 0 17 1 0 0
/proc/8964/statm: 411 339 73 123 0 286 0
Current children cumulated CPU time (s) 4.07
Current children cumulated vsize (KiB) 1644

Child status: 20
Real time (s): 4.10589
CPU time (s): 4.09138
CPU user time (s): 4.08238
CPU system time (s): 0.008998
CPU usage (%): 99.6466
Max. virtual memory (cumulated for all children) (KiB): 1644

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 4.08238
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= 358
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= 37

runsolver used 0.004999 second user time and 0.018997 second system time

The end

Launcher Data (download as text)

Begin job on node42 on Tue Feb 27 07:02:25 UTC 2007

IDJOB= 310458
IDBENCH= 20287
IDSOLVER= 111
FILE ID= node42/310458-1172559745

PBS_JOBID= 3971877

Free space on /tmp= 66555 MiB

SOLVER NAME= March KS 2007-02-08
BENCH NAME= HOME/pub/bench/SAT07/random/2+p/p0.9/v630/unif2p-p0.9-v630-c2280-S779175761-20-UNSAT.cnf
COMMAND LINE= /tmp/evaluation/310458-1172559745/march_ks /tmp/evaluation/310458-1172559745/instance-310458-1172559745.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node42/watcher-310458-1172559745 -o ROOT/results/node42/solver-310458-1172559745 -C 1200 -M 1800 --output-limit 1,15  /tmp/evaluation/310458-1172559745/march_ks /tmp/evaluation/310458-1172559745/instance-310458-1172559745.cnf            

META MD5SUM SOLVER= cd0143c15836d32fe9acb8d523a59b67
MD5SUM BENCH=  e4a16dbebaf749785d32ea7331a934fc

RANDOM SEED= 726618492

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node42.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		: 3000.261
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		: 3000.261
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:       1817216 kB
Buffers:         31740 kB
Cached:         157152 kB
SwapCached:       4704 kB
Active:          96972 kB
Inactive:       103328 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1817216 kB
SwapTotal:     4192956 kB
SwapFree:      4182516 kB
Dirty:            2356 kB
Writeback:           0 kB
Mapped:          16524 kB
Slab:            24052 kB
Committed_AS:   904764 kB
PageTables:       1640 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= 66555 MiB

End job on node42 on Tue Feb 27 07:02:29 UTC 2007