Trace number 298732

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 23.2205 23.2286

General information on the benchmark

Namerandom/OnTreshold/3SAT/v360/
unif-k3-r4.26-v360-c1533-S1154156114-09.UNSAT.shuffled.cnf
MD5SUMefb9901bf89fd570f6c562e1222df820
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark20.6749
Satisfiable
(Un)Satisfiability was proved
Number of variables360
Number of clauses1533
Sum of the clauses size4599
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 31533
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data (download as text)

0.00/0.01	c main():: ***                                   [ march satisfiability solver ]                                   ***
0.00/0.01	c main()::  **            Copyright (C) 2001-2004 M. Dufour, M. Heule, J. van Zwieten and H. van Maaren            **
0.00/0.01	c main()::   * This program may be redistributed and/or modified under the terms of the GNU Gereral Public License *
0.00/0.01	c main()::
0.00/0.01	c initFormula():: searching for DIMACS p-line....
0.00/0.01	c initFormula():: the DIMACS p-line indicates a CNF of 360 variables and 1533 clauses.
0.00/0.01	c parseCNF():: parsing....
0.00/0.01	c parseCNF():: the CNF contains 0 unary clauses.
0.00/0.01	c runParser():: parsing was successful, warming up engines...
0.00/0.01	c simplify_formula():: removed 0 tautological, 6 satisfied and 0 duplicate clauses
0.00/0.01	c preprocessing fase I completed:: there are now 359 free variables and 1527 clauses.
0.00/0.01	c stat :: sign balance is biased by 0.467
0.00/0.01	c shorten_equivalence(): average equivalence length reduced from nan to nan
0.00/0.01	c using 3-SAT heuristics (occurence based diff)
0.00/0.01	c longest clause has size 3
0.00/0.01	c simplify_formula():: removed 0 tautological, 0 satisfied and 200 duplicate clauses
0.00/0.01	c resolvent_look() :: found 106 resolvents
0.00/0.01	c lessRedundantTransformation():: nothing to be done.
0.00/0.01	c transformTo3SAT():: you gave me 360 variables and 1633 clauses.
0.00/0.01	c transformTo3SAT():: by the way, the maximal clause length before transformation was 3.
0.00/0.01	c transformTo3SAT():: I will add 0 variables and 0 clauses!
0.00/0.01	c transformTo3SAT():: the transformation yielded 360 variabels and 1633 clauses.
0.00/0.01	c main():: clause / variable ratio: ( 1633 / 360 ) = 4.54
0.00/0.01	c longest clause has size 3
0.00/0.01	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
0.00/0.01	c dynamic_preselect_setsize :: off
0.00/0.01	c suggested doublelook initial :: 0
0.00/0.01	c main():: all systems go!
0.00/0.01	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |********************************
c |****************************************************************| 0 NC: 161 JD: 15
0.00/0.08	c |----------------------------------------------------------------|
c |*
c |**
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c |****************************************************************| 1 NC: 1067 JD: 15
0.40/0.44	c |----------------------------------------------------------------|
c |*
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c |****************************************************************| 2 NC: 4368 JD: 15
1.63/1.72	c |----------------------------------------------------------------|
c |*
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c |****************************************************************| 3 NC: 11053 JD: 15
4.29/4.36	c |----------------------------------------------------------------|
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c |****************************************************************| 4 NC: 22275 JD: 15
8.80/8.88	c |----------------------------------------------------------------|
c |*
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c |****************************************************************| 5 NC: 34551 JD: 15
13.92/14.02	c |----------------------------------------------------------------|
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c |****************************************************************| 6 NC: 44575 JD: 15
18.43/18.52	c |----------------------------------------------------------------|
c |*
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c |********************************************************
c |*********************************************************c right child 16834 UNSAT by parent!
21.40/21.43	
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c |****************************************************************| 7 NC: 50683 JD: 15
21.40/21.49	c |----------------------------------------------------------------|
c |*
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c |****************************************************************| 8 NC: 53285 JD: 15
22.73/22.80	c |----------------------------------------------------------------|
c |*
c |**
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c |****************************************************************| 9 NC: 53964 JD: 15
23.14/23.15	c |----------------------------------------------------------------|
c |*
c |**
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c |****************************************************************| 10 NC: 54072 JD: 15
23.14/23.21	c |----------------------------------------------------------------|
c |**
c |***
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c |********
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c |************************************************
c |****************************************************************| 11 NC: 54080 JD: 15
23.14/23.22	c |----------------------------------------------------------------|
c |****************
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c |************************
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c |****************************************************************| 12 NC: 54081 JD: 15
23.14/23.22	c |----------------------------------------------------------------|
c |
23.14/23.22	c
23.14/23.22	c main():: nodeCount: 54081
23.14/23.22	c main():: dead ends in main: 1877
23.14/23.22	c main():: lookAheadCount: 3415279
23.14/23.22	c main():: unitResolveCount: 797907
23.14/23.22	c main():: time=23.210000
23.14/23.22	c main():: necessary_assignments: 13460
23.14/23.22	c main():: bin_sat: 0, bin_unsat 0
23.14/23.22	c main():: doublelook: #: 215472, succes #: 159889
23.14/23.22	c main():: doublelook: overall 6.569 of all possible doublelooks executed
23.14/23.22	c main():: doublelook: succesrate: 74.204, average DL_trigger: 5946.510
23.14/23.22	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/node24/watcher-298732-1171859686 -o ROOT/results/node24/solver-298732-1171859686 -C 1200 -M 1800 --output-limit 1,15 /tmp/evaluation/298732-1171859686/march_ks /tmp/evaluation/298732-1171859686/instance-298732-1171859686.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: 0.99 0.98 0.99 3/77 10920
/proc/meminfo: memFree=270744/2055920 swapFree=4144024/4192956
[pid=10920] ppid=10918 vsize=792 CPUtime=0
/proc/10920/stat : 10920 (march_ks) R 10918 10920 6827 0 -1 4194304 120 0 0 0 0 0 0 0 18 0 1 0 205922864 811008 102 18446744073709551615 134512640 135019032 4294956640 18446744073709551615 134661846 0 0 4096 0 0 0 0 17 1 0 0
/proc/10920/statm: 198 102 52 123 0 73 0

[startup+0.107169 s]
/proc/loadavg: 0.99 0.98 0.99 3/77 10920
/proc/meminfo: memFree=270744/2055920 swapFree=4144024/4192956
[pid=10920] ppid=10918 vsize=1228 CPUtime=0.1
/proc/10920/stat : 10920 (march_ks) R 10918 10920 6827 0 -1 4194304 234 0 0 0 10 0 0 0 18 0 1 0 205922864 1257472 216 18446744073709551615 134512640 135019032 4294956640 18446744073709551615 134564784 0 0 4096 0 0 0 0 17 1 0 0
/proc/10920/statm: 307 216 73 123 0 182 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 1228

[startup+0.515213 s]
/proc/loadavg: 0.99 0.98 0.99 3/77 10920
/proc/meminfo: memFree=270744/2055920 swapFree=4144024/4192956
[pid=10920] ppid=10918 vsize=1228 CPUtime=0.5
/proc/10920/stat : 10920 (march_ks) R 10918 10920 6827 0 -1 4194304 250 0 0 0 50 0 0 0 21 0 1 0 205922864 1257472 232 18446744073709551615 134512640 135019032 4294956640 18446744073709551615 134597670 0 0 4096 0 0 0 0 17 1 0 0
/proc/10920/statm: 307 232 73 123 0 182 0
Current children cumulated CPU time (s) 0.5
Current children cumulated vsize (KiB) 1228

[startup+1.3353 s]
/proc/loadavg: 0.99 0.98 0.99 2/78 10921
/proc/meminfo: memFree=270032/2055920 swapFree=4144024/4192956
[pid=10920] ppid=10918 vsize=1228 CPUtime=1.32
/proc/10920/stat : 10920 (march_ks) R 10918 10920 6827 0 -1 4194304 262 0 0 0 132 0 0 0 25 0 1 0 205922864 1257472 244 18446744073709551615 134512640 135019032 4294956640 18446744073709551615 134526441 0 0 4096 0 0 0 0 17 1 0 0
/proc/10920/statm: 307 244 73 123 0 182 0
Current children cumulated CPU time (s) 1.32
Current children cumulated vsize (KiB) 1228

[startup+2.97148 s]
/proc/loadavg: 0.99 0.98 0.99 2/78 10921
/proc/meminfo: memFree=269840/2055920 swapFree=4144024/4192956
[pid=10920] ppid=10918 vsize=1360 CPUtime=2.96
/proc/10920/stat : 10920 (march_ks) R 10918 10920 6827 0 -1 4194304 279 0 0 0 296 0 0 0 25 0 1 0 205922864 1392640 261 18446744073709551615 134512640 135019032 4294956640 18446744073709551615 134628916 0 0 4096 0 0 0 0 17 1 0 0
/proc/10920/statm: 340 261 73 123 0 215 0
Current children cumulated CPU time (s) 2.96
Current children cumulated vsize (KiB) 1360

[startup+6.25383 s]
/proc/loadavg: 0.99 0.98 0.99 2/78 10921
/proc/meminfo: memFree=269712/2055920 swapFree=4144024/4192956
[pid=10920] ppid=10918 vsize=1496 CPUtime=6.24
/proc/10920/stat : 10920 (march_ks) R 10918 10920 6827 0 -1 4194304 315 0 0 0 624 0 0 0 25 0 1 0 205922864 1531904 297 18446744073709551615 134512640 135019032 4294956640 18446744073709551615 134538162 0 0 4096 0 0 0 0 17 1 0 0
/proc/10920/statm: 374 297 73 123 0 249 0
Current children cumulated CPU time (s) 6.24
Current children cumulated vsize (KiB) 1496

[startup+12.7045 s]
/proc/loadavg: 0.99 0.98 0.99 2/78 10921
/proc/meminfo: memFree=269392/2055920 swapFree=4144024/4192956
[pid=10920] ppid=10918 vsize=1664 CPUtime=12.69
/proc/10920/stat : 10920 (march_ks) R 10918 10920 6827 0 -1 4194304 349 0 0 0 1269 0 0 0 25 0 1 0 205922864 1703936 331 18446744073709551615 134512640 135019032 4294956640 18446744073709551615 134542664 0 0 4096 0 0 0 0 17 1 0 0
/proc/10920/statm: 416 331 73 123 0 291 0
Current children cumulated CPU time (s) 12.69
Current children cumulated vsize (KiB) 1664

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

[startup+13.1136 s]
/proc/loadavg: 0.99 0.98 0.99 2/78 10921
/proc/meminfo: memFree=269392/2055920 swapFree=4144024/4192956
[pid=10920] ppid=10918 vsize=1664 CPUtime=13.1
/proc/10920/stat : 10920 (march_ks) R 10918 10920 6827 0 -1 4194304 351 0 0 0 1310 0 0 0 25 0 1 0 205922864 1703936 333 18446744073709551615 134512640 135019032 4294956640 18446744073709551615 134597676 0 0 4096 0 0 0 0 17 1 0 0
/proc/10920/statm: 416 333 73 123 0 291 0
Current children cumulated CPU time (s) 13.1
Current children cumulated vsize (KiB) 1664

[startup+19.6713 s]
/proc/loadavg: 0.99 0.98 0.99 2/78 10921
/proc/meminfo: memFree=269136/2055920 swapFree=4144024/4192956
[pid=10920] ppid=10918 vsize=1948 CPUtime=19.65
/proc/10920/stat : 10920 (march_ks) R 10918 10920 6827 0 -1 4194304 414 0 0 0 1965 0 0 0 25 0 1 0 205922864 1994752 396 18446744073709551615 134512640 135019032 4294956640 18446744073709551615 134579536 0 0 4096 0 0 0 0 17 1 0 0
/proc/10920/statm: 487 396 73 123 0 362 0
Current children cumulated CPU time (s) 19.65
Current children cumulated vsize (KiB) 1948

[startup+21.3075 s]
/proc/loadavg: 0.99 0.98 0.99 2/78 10921
/proc/meminfo: memFree=269072/2055920 swapFree=4144024/4192956
[pid=10920] ppid=10918 vsize=2176 CPUtime=21.29
/proc/10920/stat : 10920 (march_ks) R 10918 10920 6827 0 -1 4194304 431 0 0 0 2129 0 0 0 25 0 1 0 205922864 2228224 413 18446744073709551615 134512640 135019032 4294956640 18446744073709551615 134579227 0 0 4096 0 0 0 0 17 1 0 0
/proc/10920/statm: 544 413 73 123 0 419 0
Current children cumulated CPU time (s) 21.29
Current children cumulated vsize (KiB) 2176

[startup+22.1325 s]
/proc/loadavg: 0.99 0.98 0.99 2/78 10921
/proc/meminfo: memFree=269008/2055920 swapFree=4144024/4192956
[pid=10920] ppid=10918 vsize=2176 CPUtime=22.11
/proc/10920/stat : 10920 (march_ks) R 10918 10920 6827 0 -1 4194304 440 0 0 0 2211 0 0 0 25 0 1 0 205922864 2228224 422 18446744073709551615 134512640 135019032 4294956640 18446744073709551615 134538152 0 0 4096 0 0 0 0 17 1 0 0
/proc/10920/statm: 544 422 73 123 0 419 0
Current children cumulated CPU time (s) 22.11
Current children cumulated vsize (KiB) 2176

[startup+22.9536 s]
/proc/loadavg: 0.99 0.98 0.99 2/78 10921
/proc/meminfo: memFree=269008/2055920 swapFree=4144024/4192956
[pid=10920] ppid=10918 vsize=2176 CPUtime=22.94
/proc/10920/stat : 10920 (march_ks) R 10918 10920 6827 0 -1 4194304 449 0 0 0 2294 0 0 0 25 0 1 0 205922864 2228224 431 18446744073709551615 134512640 135019032 4294956640 18446744073709551615 134527168 0 0 4096 0 0 0 0 17 1 0 0
/proc/10920/statm: 544 431 73 123 0 419 0
Current children cumulated CPU time (s) 22.94
Current children cumulated vsize (KiB) 2176

[startup+23.1577 s]
/proc/loadavg: 0.99 0.98 0.99 2/78 10921
/proc/meminfo: memFree=269008/2055920 swapFree=4144024/4192956
[pid=10920] ppid=10918 vsize=2176 CPUtime=23.14
/proc/10920/stat : 10920 (march_ks) R 10918 10920 6827 0 -1 4194304 451 0 0 0 2314 0 0 0 25 0 1 0 205922864 2228224 433 18446744073709551615 134512640 135019032 4294956640 18446744073709551615 134684125 0 0 4096 0 0 0 0 17 1 0 0
/proc/10920/statm: 544 433 73 123 0 419 0
Current children cumulated CPU time (s) 23.14
Current children cumulated vsize (KiB) 2176

Child status: 20
Real time (s): 23.2286
CPU time (s): 23.2205
CPU user time (s): 23.2125
CPU system time (s): 0.007998
CPU usage (%): 99.9651
Max. virtual memory (cumulated for all children) (KiB): 2176

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 23.2125
system time used= 0.007998
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 453
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= 118

runsolver used 0.024996 second user time and 0.057991 second system time

The end

Launcher Data (download as text)

Begin job on node24 on Mon Feb 19 04:34:46 UTC 2007

IDJOB= 298732
IDBENCH= 19993
IDSOLVER= 111
FILE ID= node24/298732-1171859686

PBS_JOBID= 3839656

Free space on /tmp= 66561 MiB

SOLVER NAME= March KS 2007-02-08
BENCH NAME= HOME/pub/bench/SAT07/random/OnTreshold/3SAT/v360/unif-k3-r4.26-v360-c1533-S1154156114-09.UNSAT.shuffled.cnf
COMMAND LINE= /tmp/evaluation/298732-1171859686/march_ks /tmp/evaluation/298732-1171859686/instance-298732-1171859686.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node24/watcher-298732-1171859686 -o ROOT/results/node24/solver-298732-1171859686 -C 1200 -M 1800 --output-limit 1,15  /tmp/evaluation/298732-1171859686/march_ks /tmp/evaluation/298732-1171859686/instance-298732-1171859686.cnf            

META MD5SUM SOLVER= cd0143c15836d32fe9acb8d523a59b67
MD5SUM BENCH=  efb9901bf89fd570f6c562e1222df820

RANDOM SEED= 423483305

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node24.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:        271152 kB
Buffers:         43752 kB
Cached:        1634308 kB
SwapCached:       4600 kB
Active:         764360 kB
Inactive:       924204 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:        271152 kB
SwapTotal:     4192956 kB
SwapFree:      4144024 kB
Dirty:            2284 kB
Writeback:           0 kB
Mapped:          15632 kB
Slab:            81772 kB
Committed_AS:   682300 kB
PageTables:       1732 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= 66561 MiB

End job on node24 on Mon Feb 19 04:35:09 UTC 2007