Trace number 307998

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 32.1821 32.1932

General information on the benchmark

Namerandom/2+p/p0.7/v3500/
unif2p-p0.7-v3500-c9345-S1377128774-12-UNSAT.cnf
MD5SUMcc733e9a0d26b1e09913a40f9eba8e3c
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark28.6866
Satisfiable
(Un)Satisfiability was proved
Number of variables3500
Number of clauses9344
Sum of the clauses size25229
Maximum clause length3
Minimum clause length2
Number of clauses of size 10
Number of clauses of size 22803
Number of clauses of size 36541
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data (download as text)

0.10/0.13	c main():: ***                                   [ march satisfiability solver ]                                   ***
0.10/0.13	c main()::  **            Copyright (C) 2001-2004 M. Dufour, M. Heule, J. van Zwieten and H. van Maaren            **
0.10/0.13	c main()::   * This program may be redistributed and/or modified under the terms of the GNU Gereral Public License *
0.10/0.13	c main()::
0.10/0.13	c initFormula():: searching for DIMACS p-line....
0.10/0.13	c initFormula():: the DIMACS p-line indicates a CNF of 3500 variables and 9344 clauses.
0.10/0.13	c parseCNF():: parsing....
0.10/0.13	c parseCNF():: the CNF contains 0 unary clauses.
0.10/0.13	c runParser():: parsing was successful, warming up engines...
0.10/0.13	c find_and_remove_tautogolies():: found and removed 1 tautologies
0.10/0.13	c simplify_formula():: removed 0 tautological, 780 satisfied and 0 duplicate clauses
0.10/0.13	c preprocessing fase I completed:: there are now 3285 free variables and 8564 clauses.
0.10/0.13	c stat :: sign balance is biased by 0.686
0.10/0.13	c shorten_equivalence(): average equivalence length reduced from nan to nan
0.10/0.13	c using 3-SAT heuristics (occurence based diff)
0.10/0.13	c longest clause has size 3
0.10/0.13	c simplify_formula():: removed 0 tautological, 0 satisfied and 27 duplicate clauses
0.10/0.13	c resolvent_look() :: found 13 resolvents
0.10/0.13	c lessRedundantTransformation():: nothing to be done.
0.10/0.13	c transformTo3SAT():: you gave me 3500 variables and 8577 clauses.
0.10/0.13	c transformTo3SAT():: by the way, the maximal clause length before transformation was 3.
0.10/0.13	c transformTo3SAT():: I will add 0 variables and 0 clauses!
0.10/0.13	c transformTo3SAT():: the transformation yielded 3500 variabels and 8577 clauses.
0.10/0.13	c main():: clause / variable ratio: ( 8577 / 3500 ) = 2.45
0.10/0.13	c longest clause has size 3
0.10/0.13	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
0.10/0.13	c dynamic_preselect_setsize :: on
0.10/0.13	c suggested doublelook initial :: 0
0.10/0.13	c main():: all systems go!
0.10/0.13	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |********************************
c |****************************************************************| 0 NC: 159 JD: 6
4.70/4.74	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |********************************
c |*********************************
c |**********************************
c |************************************
c |****************************************
c |************************************************
c |*************************************************
c |**************************************************
c |****************************************************
c |********************************************************
c |**********************************************************
c |************************************************************
c |*************************************************************
c |**************************************************************
c |***************************************************************
c |****************************************************************| 1 NC: 481 JD: 6
11.15/11.17	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: 886 JD: 6
20.16/20.19	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: 1252 JD: 6
29.48/29.52	c |----------------------------------------------------------------|
c |**
c |****
c |********
c |**********
c |***********
c |************
c |****************
c |********************************
c |**********************************
c |***********************************
c |************************************
c |*************************************
c |**************************************
c |****************************************
c |*****************************************
c |******************************************
c |********************************************
c |************************************************
c |****************************************************************| 4 NC: 1320 JD: 6
32.04/32.12	c |----------------------------------------------------------------|
c |**
c |****
c |********
c |****************
c |********************************
c |****************************************************************| 5 NC: 1321 JD: 6
32.14/32.19	c |----------------------------------------------------------------|
c |
32.14/32.19	c
32.14/32.19	c main():: nodeCount: 1321
32.14/32.19	c main():: dead ends in main: 0
32.14/32.19	c main():: lookAheadCount: 2512816
32.14/32.19	c main():: unitResolveCount: 75546
32.14/32.19	c main():: time=32.170000
32.14/32.19	c main():: necessary_assignments: 1240
32.14/32.19	c main():: bin_sat: 0, bin_unsat 0
32.14/32.19	c main():: doublelook: #: 21108, succes #: 17907
32.14/32.19	c main():: doublelook: overall 0.845 of all possible doublelooks executed
32.14/32.19	c main():: doublelook: succesrate: 84.835, average DL_trigger: 12463.874
32.14/32.19	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/node2/watcher-307998-1172511101 -o ROOT/results/node2/solver-307998-1172511101 -C 1200 -M 1800 --output-limit 1,15 /tmp/evaluation/307998-1172511101/march_ks /tmp/evaluation/307998-1172511101/instance-307998-1172511101.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: 0.94 0.99 0.99 3/77 21596
/proc/meminfo: memFree=1760376/2055920 swapFree=4192812/4192956
[pid=21596] ppid=21594 vsize=928 CPUtime=0
/proc/21596/stat : 21596 (march_ks) R 21594 21596 20533 0 -1 4194304 162 0 0 0 0 0 0 0 18 0 1 0 271065029 950272 147 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134557851 0 0 4096 0 0 0 0 17 1 0 0
/proc/21596/statm: 232 147 47 123 0 107 0

[startup+0.106398 s]
/proc/loadavg: 0.94 0.99 0.99 3/77 21596
/proc/meminfo: memFree=1760376/2055920 swapFree=4192812/4192956
[pid=21596] ppid=21594 vsize=2956 CPUtime=0.1
/proc/21596/stat : 21596 (march_ks) R 21594 21596 20533 0 -1 4194304 1698 0 0 0 10 0 0 0 18 0 1 0 271065029 3026944 592 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134628643 0 0 4096 0 0 0 0 17 1 0 0
/proc/21596/statm: 739 592 67 123 0 614 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 2956

[startup+0.514441 s]
/proc/loadavg: 0.94 0.99 0.99 3/77 21596
/proc/meminfo: memFree=1760376/2055920 swapFree=4192812/4192956
[pid=21596] ppid=21594 vsize=4512 CPUtime=0.5
/proc/21596/stat : 21596 (march_ks) R 21594 21596 20533 0 -1 4194304 2203 0 0 0 50 0 0 0 21 0 1 0 271065029 4620288 952 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134526436 0 0 4096 0 0 0 0 17 1 0 0
/proc/21596/statm: 1128 952 73 123 0 1003 0
Current children cumulated CPU time (s) 0.5
Current children cumulated vsize (KiB) 4512

[startup+1.33453 s]
/proc/loadavg: 0.94 0.99 0.99 2/78 21597
/proc/meminfo: memFree=1756784/2055920 swapFree=4192812/4192956
[pid=21596] ppid=21594 vsize=4640 CPUtime=1.32
/proc/21596/stat : 21596 (march_ks) R 21594 21596 20533 0 -1 4194304 2229 0 0 0 132 0 0 0 25 0 1 0 271065029 4751360 978 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134538152 0 0 4096 0 0 0 0 17 1 0 0
/proc/21596/statm: 1160 978 73 123 0 1035 0
Current children cumulated CPU time (s) 1.32
Current children cumulated vsize (KiB) 4640

[startup+2.9707 s]
/proc/loadavg: 0.94 0.99 0.99 2/78 21597
/proc/meminfo: memFree=1756528/2055920 swapFree=4192812/4192956
[pid=21596] ppid=21594 vsize=4768 CPUtime=2.96
/proc/21596/stat : 21596 (march_ks) R 21594 21596 20533 0 -1 4194304 2262 0 0 0 296 0 0 0 25 0 1 0 271065029 4882432 1011 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134526432 0 0 4096 0 0 0 0 17 1 0 0
/proc/21596/statm: 1192 1011 73 123 0 1067 0
Current children cumulated CPU time (s) 2.96
Current children cumulated vsize (KiB) 4768

[startup+6.24704 s]
/proc/loadavg: 0.95 0.99 0.99 2/78 21597
/proc/meminfo: memFree=1756144/2055920 swapFree=4192812/4192956
[pid=21596] ppid=21594 vsize=4908 CPUtime=6.23
/proc/21596/stat : 21596 (march_ks) R 21594 21596 20533 0 -1 4194304 2309 0 0 0 623 0 0 0 25 0 1 0 271065029 5025792 1058 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134538142 0 0 4096 0 0 0 0 17 1 0 0
/proc/21596/statm: 1227 1058 73 123 0 1102 0
Current children cumulated CPU time (s) 6.23
Current children cumulated vsize (KiB) 4908

[startup+12.7027 s]
/proc/loadavg: 0.95 0.99 0.99 2/78 21597
/proc/meminfo: memFree=1755832/2055920 swapFree=4192812/4192956
[pid=21596] ppid=21594 vsize=5036 CPUtime=12.69
/proc/21596/stat : 21596 (march_ks) R 21594 21596 20533 0 -1 4194304 2354 0 0 0 1269 0 0 0 25 0 1 0 271065029 5156864 1103 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134538152 0 0 4096 0 0 0 0 17 1 0 0
/proc/21596/statm: 1259 1103 73 123 0 1134 0
Current children cumulated CPU time (s) 12.69
Current children cumulated vsize (KiB) 5036

[startup+25.511 s]
/proc/loadavg: 0.96 0.99 0.99 2/78 21597
/proc/meminfo: memFree=1755704/2055920 swapFree=4192812/4192956
[pid=21596] ppid=21594 vsize=5284 CPUtime=25.49
/proc/21596/stat : 21596 (march_ks) R 21594 21596 20533 0 -1 4194304 2403 0 0 0 2549 0 0 0 25 0 1 0 271065029 5410816 1152 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134526476 0 0 4096 0 0 0 0 17 1 0 0
/proc/21596/statm: 1321 1152 73 123 0 1196 0
Current children cumulated CPU time (s) 25.49
Current children cumulated vsize (KiB) 5284

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

[startup+26.2291 s]
/proc/loadavg: 0.96 0.99 0.99 2/78 21597
/proc/meminfo: memFree=1755704/2055920 swapFree=4192812/4192956
[pid=21596] ppid=21594 vsize=5284 CPUtime=26.21
/proc/21596/stat : 21596 (march_ks) R 21594 21596 20533 0 -1 4194304 2403 0 0 0 2621 0 0 0 25 0 1 0 271065029 5410816 1152 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134526533 0 0 4096 0 0 0 0 17 1 0 0
/proc/21596/statm: 1321 1152 73 123 0 1196 0
Current children cumulated CPU time (s) 26.21
Current children cumulated vsize (KiB) 5284

[startup+29.5055 s]
/proc/loadavg: 0.96 0.99 0.99 2/78 21597
/proc/meminfo: memFree=1755704/2055920 swapFree=4192812/4192956
[pid=21596] ppid=21594 vsize=5284 CPUtime=29.48
/proc/21596/stat : 21596 (march_ks) R 21594 21596 20533 0 -1 4194304 2410 0 0 0 2948 0 0 0 25 0 1 0 271065029 5410816 1159 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134538176 0 0 4096 0 0 0 0 17 1 0 0
/proc/21596/statm: 1321 1159 73 123 0 1196 0
Current children cumulated CPU time (s) 29.48
Current children cumulated vsize (KiB) 5284

[startup+31.1416 s]
/proc/loadavg: 0.96 0.99 0.99 2/78 21597
/proc/meminfo: memFree=1755640/2055920 swapFree=4192812/4192956
[pid=21596] ppid=21594 vsize=5284 CPUtime=31.12
/proc/21596/stat : 21596 (march_ks) R 21594 21596 20533 0 -1 4194304 2416 0 0 0 3112 0 0 0 25 0 1 0 271065029 5410816 1165 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134526400 0 0 4096 0 0 0 0 17 1 0 0
/proc/21596/statm: 1321 1165 73 123 0 1196 0
Current children cumulated CPU time (s) 31.12
Current children cumulated vsize (KiB) 5284

[startup+31.9627 s]
/proc/loadavg: 0.96 0.99 0.99 2/78 21597
/proc/meminfo: memFree=1755640/2055920 swapFree=4192812/4192956
[pid=21596] ppid=21594 vsize=5284 CPUtime=31.94
/proc/21596/stat : 21596 (march_ks) R 21594 21596 20533 0 -1 4194304 2416 0 0 0 3194 0 0 0 25 0 1 0 271065029 5410816 1165 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134548041 0 0 4096 0 0 0 0 17 1 0 0
/proc/21596/statm: 1321 1165 73 123 0 1196 0
Current children cumulated CPU time (s) 31.94
Current children cumulated vsize (KiB) 5284

[startup+32.1687 s]
/proc/loadavg: 0.96 0.99 0.99 2/78 21597
/proc/meminfo: memFree=1755640/2055920 swapFree=4192812/4192956
[pid=21596] ppid=21594 vsize=5408 CPUtime=32.14
/proc/21596/stat : 21596 (march_ks) R 21594 21596 20533 0 -1 4194304 2418 0 0 0 3214 0 0 0 25 0 1 0 271065029 5537792 1167 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134538194 0 0 4096 0 0 0 0 17 1 0 0
/proc/21596/statm: 1352 1167 73 123 0 1227 0
Current children cumulated CPU time (s) 32.14
Current children cumulated vsize (KiB) 5408

Child status: 20
Real time (s): 32.1932
CPU time (s): 32.1821
CPU user time (s): 32.1721
CPU system time (s): 0.009998
CPU usage (%): 99.9654
Max. virtual memory (cumulated for all children) (KiB): 5408

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 32.1721
system time used= 0.009998
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 2419
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= 7
involuntary context switches= 53

runsolver used 0.043993 second user time and 0.073988 second system time

The end

Launcher Data (download as text)

Begin job on node2 on Mon Feb 26 17:31:41 UTC 2007

IDJOB= 307998
IDBENCH= 20220
IDSOLVER= 111
FILE ID= node2/307998-1172511101

PBS_JOBID= 3971587

Free space on /tmp= 66556 MiB

SOLVER NAME= March KS 2007-02-08
BENCH NAME= HOME/pub/bench/SAT07/random/2+p/p0.7/v3500/unif2p-p0.7-v3500-c9345-S1377128774-12-UNSAT.cnf
COMMAND LINE= /tmp/evaluation/307998-1172511101/march_ks /tmp/evaluation/307998-1172511101/instance-307998-1172511101.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node2/watcher-307998-1172511101 -o ROOT/results/node2/solver-307998-1172511101 -C 1200 -M 1800 --output-limit 1,15  /tmp/evaluation/307998-1172511101/march_ks /tmp/evaluation/307998-1172511101/instance-307998-1172511101.cnf            

META MD5SUM SOLVER= cd0143c15836d32fe9acb8d523a59b67
MD5SUM BENCH=  cc733e9a0d26b1e09913a40f9eba8e3c

RANDOM SEED= 548581851

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node2.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		: 3000.247
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		: 3000.247
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:       1760848 kB
Buffers:         39484 kB
Cached:         141872 kB
SwapCached:          0 kB
Active:         199880 kB
Inactive:        41684 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1760848 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:            2432 kB
Writeback:           0 kB
Mapped:          79124 kB
Slab:            39008 kB
Committed_AS:  1263840 kB
PageTables:       1812 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= 66556 MiB

End job on node2 on Mon Feb 26 17:32:13 UTC 2007