Trace number 312385

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 2007-02-08SAT 18.0533 18.0648

General information on the benchmark

Namerandom/2+p/p0.8/v1665/
unif2p-p0.8-v1665-c5178-S1939769766-11-SAT.cnf
MD5SUM6a3b3e57d22696582c0456812681e53c
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.060989
Satisfiable
(Un)Satisfiability was proved
Number of variables1664
Number of clauses5177
Sum of the clauses size14496
Maximum clause length3
Minimum clause length2
Number of clauses of size 10
Number of clauses of size 21035
Number of clauses of size 34142
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data (download as text)

0.00/0.05	c main():: ***                                   [ march satisfiability solver ]                                   ***
0.00/0.05	c main()::  **            Copyright (C) 2001-2004 M. Dufour, M. Heule, J. van Zwieten and H. van Maaren            **
0.00/0.05	c main()::   * This program may be redistributed and/or modified under the terms of the GNU Gereral Public License *
0.00/0.05	c main()::
0.00/0.05	c initFormula():: searching for DIMACS p-line....
0.00/0.05	c initFormula():: the DIMACS p-line indicates a CNF of 1665 variables and 5177 clauses.
0.00/0.05	c parseCNF():: parsing....
0.00/0.05	c parseCNF():: the CNF contains 0 unary clauses.
0.00/0.05	c runParser():: parsing was successful, warming up engines...
0.00/0.05	c simplify_formula():: removed 0 tautological, 178 satisfied and 0 duplicate clauses
0.00/0.05	c preprocessing fase I completed:: there are now 1626 free variables and 4999 clauses.
0.00/0.05	c stat :: sign balance is biased by 0.686
0.00/0.05	c shorten_equivalence(): average equivalence length reduced from nan to nan
0.00/0.05	c using 3-SAT heuristics (occurence based diff)
0.00/0.05	c longest clause has size 3
0.00/0.05	c simplify_formula():: removed 0 tautological, 0 satisfied and 54 duplicate clauses
0.00/0.05	c resolvent_look() :: found 28 resolvents
0.00/0.05	c lessRedundantTransformation():: nothing to be done.
0.00/0.05	c transformTo3SAT():: you gave me 1665 variables and 5027 clauses.
0.00/0.05	c transformTo3SAT():: by the way, the maximal clause length before transformation was 3.
0.00/0.05	c transformTo3SAT():: I will add 0 variables and 0 clauses!
0.00/0.05	c transformTo3SAT():: the transformation yielded 1665 variabels and 5027 clauses.
0.00/0.05	c main():: clause / variable ratio: ( 5027 / 1665 ) = 3.02
0.00/0.05	c longest clause has size 3
0.00/0.05	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
0.00/0.05	c dynamic_preselect_setsize :: on
0.00/0.05	c suggested doublelook initial :: 0
0.00/0.05	c main():: all systems go!
0.00/0.05	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |********************************
c |****************************************************************| 0 NC: 127 JD: 18
1.02/1.11	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: 719 JD: 18
4.09/4.13	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 |***************************************************************
c |****************************************************************| 2 NC: 2720 JD: 18
13.00/13.03	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 |*******************************
18.02/18.05	c solution bin :: 100000001010000000.01000000001100
18.02/18.05	c direction branchin :: current_rights = 7
18.02/18.05	
c |*******************************
18.02/18.05	c
18.02/18.05	c main():: nodeCount: 4244
18.02/18.05	c main():: dead ends in main: 1
18.02/18.05	c main():: lookAheadCount: 1803086
18.02/18.05	c main():: unitResolveCount: 121035
18.02/18.05	c main():: time=18.040000
18.02/18.05	c main():: necessary_assignments: 2890
18.02/18.05	c main():: bin_sat: 0, bin_unsat 0
18.02/18.05	c main():: doublelook: #: 32575, succes #: 25567
18.02/18.05	c main():: doublelook: overall 1.826 of all possible doublelooks executed
18.02/18.05	c main():: doublelook: succesrate: 78.487, average DL_trigger: 12106.750
18.02/18.05	c main():: SOLUTION VERIFIED :-)
18.02/18.05	s SATISFIABLE
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Verifier Data (download as text)

OK

Watcher Data (download as text)

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

command line: runsolver --timestamp -w ROOT/results/node3/watcher-312385-1172587921 -o ROOT/results/node3/solver-312385-1172587921 -C 1200 -M 1800 --output-limit 1,15 /tmp/evaluation/312385-1172587921/march_ks /tmp/evaluation/312385-1172587921/instance-312385-1172587921.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: 0.00 0.02 0.23 3/77 31908
/proc/meminfo: memFree=809384/2055920 swapFree=4192812/4192956
[pid=31908] ppid=31906 vsize=788 CPUtime=0
/proc/31908/stat : 31908 (march_ks) R 31906 31908 31491 0 -1 4194304 124 0 0 0 0 0 0 0 18 0 1 0 278764416 806912 109 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134662703 0 0 4096 0 0 0 0 17 1 0 0
/proc/31908/statm: 197 109 47 123 0 72 0

[startup+0.107834 s]
/proc/loadavg: 0.00 0.02 0.23 3/77 31908
/proc/meminfo: memFree=809384/2055920 swapFree=4192812/4192956
[pid=31908] ppid=31906 vsize=2620 CPUtime=0.1
/proc/31908/stat : 31908 (march_ks) R 31906 31908 31491 0 -1 4194304 570 0 0 0 10 0 0 0 18 0 1 0 278764416 2682880 548 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134596372 0 0 4096 0 0 0 0 17 1 0 0
/proc/31908/statm: 655 548 73 123 0 530 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 2620

[startup+0.518875 s]
/proc/loadavg: 0.00 0.02 0.23 3/77 31908
/proc/meminfo: memFree=809384/2055920 swapFree=4192812/4192956
[pid=31908] ppid=31906 vsize=2620 CPUtime=0.51
/proc/31908/stat : 31908 (march_ks) R 31906 31908 31491 0 -1 4194304 581 0 0 0 51 0 0 0 21 0 1 0 278764416 2682880 559 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134526476 0 0 4096 0 0 0 0 17 1 0 0
/proc/31908/statm: 655 559 73 123 0 530 0
Current children cumulated CPU time (s) 0.51
Current children cumulated vsize (KiB) 2620

[startup+1.33893 s]
/proc/loadavg: 0.00 0.02 0.23 2/78 31909
/proc/meminfo: memFree=807392/2055920 swapFree=4192812/4192956
[pid=31908] ppid=31906 vsize=2752 CPUtime=1.33
/proc/31908/stat : 31908 (march_ks) R 31906 31908 31491 0 -1 4194304 613 0 0 0 133 0 0 0 25 0 1 0 278764416 2818048 591 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134526443 0 0 4096 0 0 0 0 17 1 0 0
/proc/31908/statm: 688 591 73 123 0 563 0
Current children cumulated CPU time (s) 1.33
Current children cumulated vsize (KiB) 2752

[startup+2.97507 s]
/proc/loadavg: 0.00 0.02 0.23 2/78 31909
/proc/meminfo: memFree=807136/2055920 swapFree=4192812/4192956
[pid=31908] ppid=31906 vsize=2884 CPUtime=2.96
/proc/31908/stat : 31908 (march_ks) R 31906 31908 31491 0 -1 4194304 638 0 0 0 296 0 0 0 25 0 1 0 278764416 2953216 616 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134526436 0 0 4096 0 0 0 0 17 1 0 0
/proc/31908/statm: 721 616 73 123 0 596 0
Current children cumulated CPU time (s) 2.96
Current children cumulated vsize (KiB) 2884

[startup+6.25134 s]
/proc/loadavg: 0.16 0.06 0.24 2/78 31909
/proc/meminfo: memFree=806880/2055920 swapFree=4192812/4192956
[pid=31908] ppid=31906 vsize=3012 CPUtime=6.24
/proc/31908/stat : 31908 (march_ks) R 31906 31908 31491 0 -1 4194304 668 0 0 0 624 0 0 0 25 0 1 0 278764416 3084288 646 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134538155 0 0 4096 0 0 0 0 17 1 0 0
/proc/31908/statm: 753 646 73 123 0 628 0
Current children cumulated CPU time (s) 6.24
Current children cumulated vsize (KiB) 3012

[startup+12.7099 s]
/proc/loadavg: 0.23 0.07 0.25 2/78 31909
/proc/meminfo: memFree=806624/2055920 swapFree=4192812/4192956
[pid=31908] ppid=31906 vsize=3144 CPUtime=12.69
/proc/31908/stat : 31908 (march_ks) R 31906 31908 31491 0 -1 4194304 703 0 0 0 1269 0 0 0 25 0 1 0 278764416 3219456 681 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134526435 0 0 4096 0 0 0 0 17 1 0 0
/proc/31908/statm: 786 681 73 123 0 661 0
Current children cumulated CPU time (s) 12.69
Current children cumulated vsize (KiB) 3144

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

[startup+13.1179 s]
/proc/loadavg: 0.23 0.07 0.25 2/78 31909
/proc/meminfo: memFree=806624/2055920 swapFree=4192812/4192956
[pid=31908] ppid=31906 vsize=3144 CPUtime=13.1
/proc/31908/stat : 31908 (march_ks) R 31906 31908 31491 0 -1 4194304 705 0 0 0 1310 0 0 0 25 0 1 0 278764416 3219456 683 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134538142 0 0 4096 0 0 0 0 17 1 0 0
/proc/31908/statm: 786 683 73 123 0 661 0
Current children cumulated CPU time (s) 13.1
Current children cumulated vsize (KiB) 3144

[startup+16.3942 s]
/proc/loadavg: 0.29 0.09 0.25 2/78 31909
/proc/meminfo: memFree=806624/2055920 swapFree=4192812/4192956
[pid=31908] ppid=31906 vsize=3276 CPUtime=16.38
/proc/31908/stat : 31908 (march_ks) R 31906 31908 31491 0 -1 4194304 724 0 0 0 1638 0 0 0 25 0 1 0 278764416 3354624 702 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134538568 0 0 4096 0 0 0 0 17 1 0 0
/proc/31908/statm: 819 702 73 123 0 694 0
Current children cumulated CPU time (s) 16.38
Current children cumulated vsize (KiB) 3276

[startup+17.2162 s]
/proc/loadavg: 0.29 0.09 0.25 2/78 31909
/proc/meminfo: memFree=806560/2055920 swapFree=4192812/4192956
[pid=31908] ppid=31906 vsize=3276 CPUtime=17.2
/proc/31908/stat : 31908 (march_ks) R 31906 31908 31491 0 -1 4194304 724 0 0 0 1720 0 0 0 25 0 1 0 278764416 3354624 702 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134526481 0 0 4096 0 0 0 0 17 1 0 0
/proc/31908/statm: 819 702 73 123 0 694 0
Current children cumulated CPU time (s) 17.2
Current children cumulated vsize (KiB) 3276

[startup+17.6273 s]
/proc/loadavg: 0.29 0.09 0.25 2/78 31909
/proc/meminfo: memFree=806560/2055920 swapFree=4192812/4192956
[pid=31908] ppid=31906 vsize=3276 CPUtime=17.61
/proc/31908/stat : 31908 (march_ks) R 31906 31908 31491 0 -1 4194304 725 0 0 0 1761 0 0 0 25 0 1 0 278764416 3354624 703 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134526481 0 0 4096 0 0 0 0 17 1 0 0
/proc/31908/statm: 819 703 73 123 0 694 0
Current children cumulated CPU time (s) 17.61
Current children cumulated vsize (KiB) 3276

[startup+18.0353 s]
/proc/loadavg: 0.29 0.09 0.25 2/78 31909
/proc/meminfo: memFree=806496/2055920 swapFree=4192812/4192956
[pid=31908] ppid=31906 vsize=3408 CPUtime=18.02
/proc/31908/stat : 31908 (march_ks) R 31906 31908 31491 0 -1 4194304 748 0 0 0 1802 0 0 0 25 0 1 0 278764416 3489792 726 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134596742 0 0 4096 0 0 0 0 17 1 0 0
/proc/31908/statm: 852 726 73 123 0 727 0
Current children cumulated CPU time (s) 18.02
Current children cumulated vsize (KiB) 3408

Child status: 10
Real time (s): 18.0648
CPU time (s): 18.0533
CPU user time (s): 18.0443
CPU system time (s): 0.008998
CPU usage (%): 99.9361
Max. virtual memory (cumulated for all children) (KiB): 3408

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 18.0443
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= 752
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= 28

runsolver used 0.026995 second user time and 0.044993 second system time

The end

Launcher Data (download as text)

Begin job on node3 on Tue Feb 27 14:54:55 UTC 2007

IDJOB= 312385
IDBENCH= 20340
IDSOLVER= 111
FILE ID= node3/312385-1172587921

PBS_JOBID= 3971697

Free space on /tmp= 66557 MiB

SOLVER NAME= March KS 2007-02-08
BENCH NAME= HOME/pub/bench/SAT07/random/2+p/p0.8/v1665/unif2p-p0.8-v1665-c5178-S1939769766-11-SAT.cnf
COMMAND LINE= /tmp/evaluation/312385-1172587921/march_ks /tmp/evaluation/312385-1172587921/instance-312385-1172587921.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node3/watcher-312385-1172587921 -o ROOT/results/node3/solver-312385-1172587921 -C 1200 -M 1800 --output-limit 1,15  /tmp/evaluation/312385-1172587921/march_ks /tmp/evaluation/312385-1172587921/instance-312385-1172587921.cnf            

META MD5SUM SOLVER= cd0143c15836d32fe9acb8d523a59b67
MD5SUM BENCH=  6a3b3e57d22696582c0456812681e53c

RANDOM SEED= 670074685

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node3.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		: 3000.241
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		: 3000.241
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:        809856 kB
Buffers:         70172 kB
Cached:        1038840 kB
SwapCached:          0 kB
Active:         462048 kB
Inactive:       701592 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:        809856 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:            2360 kB
Writeback:           0 kB
Mapped:          73524 kB
Slab:            68068 kB
Committed_AS:  1210368 kB
PageTables:       1656 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= 66557 MiB

End job on node3 on Tue Feb 27 14:56:02 UTC 2007