Trace number 312098

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 1.37679 1.37942

General information on the benchmark

Namerandom/2+p/p0.8/v1665/
unif2p-p0.8-v1665-c5178-S64317265-01-SAT.cnf
MD5SUM5d31125289b1c834540b6ea9a0288381
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.039993
Satisfiable
(Un)Satisfiability was proved
Number of variables1665
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, 197 satisfied and 0 duplicate clauses
0.00/0.05	c preprocessing fase I completed:: there are now 1622 free variables and 4980 clauses.
0.00/0.05	c stat :: sign balance is biased by 0.638
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 22 resolvents
0.00/0.05	c lessRedundantTransformation():: nothing to be done.
0.00/0.05	c transformTo3SAT():: you gave me 1665 variables and 5002 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 5002 clauses.
0.00/0.05	c main():: clause / variable ratio: ( 5002 / 1665 ) = 3.00
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 |----------------------------------------------------------------|
1.33/1.37	c solution bin :: .00000000000000000000000100001000
1.33/1.37	c direction branchin :: current_rights = 4
1.33/1.37	
c |
1.33/1.37	c
1.33/1.37	c main():: nodeCount: 401
1.33/1.37	c main():: dead ends in main: 1
1.33/1.37	c main():: lookAheadCount: 186192
1.33/1.37	c main():: unitResolveCount: 7389
1.33/1.37	c main():: time=1.370000
1.33/1.37	c main():: necessary_assignments: 192
1.33/1.37	c main():: bin_sat: 0, bin_unsat 0
1.33/1.37	c main():: doublelook: #: 2078, succes #: 1624
1.33/1.37	c main():: doublelook: overall 1.123 of all possible doublelooks executed
1.33/1.37	c main():: doublelook: succesrate: 78.152, average DL_trigger: 12379.537
1.33/1.37	c main():: SOLUTION VERIFIED :-)
1.33/1.37	s SATISFIABLE
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-1661 1662 1663 1664 1665 0

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/node7/watcher-312098-1172581889 -o ROOT/results/node7/solver-312098-1172581889 -C 1200 -M 1800 --output-limit 1,15 /tmp/evaluation/312098-1172581889/march_ks /tmp/evaluation/312098-1172581889/instance-312098-1172581889.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: 0.92 0.98 0.99 3/77 26019
/proc/meminfo: memFree=1616776/2055920 swapFree=4147496/4192956
[pid=26019] ppid=26017 vsize=788 CPUtime=0
/proc/26019/stat : 26019 (march_ks) R 26017 26019 25956 0 -1 4194304 122 0 0 0 0 0 0 0 18 0 1 0 278143669 806912 107 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134684029 0 0 4096 0 0 0 0 17 1 0 0
/proc/26019/statm: 197 108 47 123 0 72 0

[startup+0.107117 s]
/proc/loadavg: 0.92 0.98 0.99 3/77 26019
/proc/meminfo: memFree=1616776/2055920 swapFree=4147496/4192956
[pid=26019] ppid=26017 vsize=2620 CPUtime=0.1
/proc/26019/stat : 26019 (march_ks) R 26017 26019 25956 0 -1 4194304 570 0 0 0 10 0 0 0 18 0 1 0 278143669 2682880 548 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134526463 0 0 4096 0 0 0 0 17 1 0 0
/proc/26019/statm: 655 548 73 123 0 530 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 2620

[startup+0.51916 s]
/proc/loadavg: 0.92 0.98 0.99 3/77 26019
/proc/meminfo: memFree=1616776/2055920 swapFree=4147496/4192956
[pid=26019] ppid=26017 vsize=2748 CPUtime=0.51
/proc/26019/stat : 26019 (march_ks) R 26017 26019 25956 0 -1 4194304 585 0 0 0 51 0 0 0 21 0 1 0 278143669 2813952 563 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134538183 0 0 4096 0 0 0 0 17 1 0 0
/proc/26019/statm: 687 563 73 123 0 562 0
Current children cumulated CPU time (s) 0.51
Current children cumulated vsize (KiB) 2748

[startup+1.34025 s]
/proc/loadavg: 1.01 1.00 1.00 2/78 26020
/proc/meminfo: memFree=1614720/2055920 swapFree=4147496/4192956
[pid=26019] ppid=26017 vsize=2880 CPUtime=1.33
/proc/26019/stat : 26019 (march_ks) R 26017 26019 25956 0 -1 4194304 620 0 0 0 133 0 0 0 25 0 1 0 278143669 2949120 598 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134662703 0 0 4096 0 0 0 0 17 1 0 0
/proc/26019/statm: 720 598 73 123 0 595 0
Current children cumulated CPU time (s) 1.33
Current children cumulated vsize (KiB) 2880

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

[startup+1.34025 s]
/proc/loadavg: 1.01 1.00 1.00 2/78 26020
/proc/meminfo: memFree=1614720/2055920 swapFree=4147496/4192956
[pid=26019] ppid=26017 vsize=2880 CPUtime=1.33
/proc/26019/stat : 26019 (march_ks) R 26017 26019 25956 0 -1 4194304 620 0 0 0 133 0 0 0 25 0 1 0 278143669 2949120 598 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134662703 0 0 4096 0 0 0 0 17 1 0 0
/proc/26019/statm: 720 598 73 123 0 595 0
Current children cumulated CPU time (s) 1.33
Current children cumulated vsize (KiB) 2880

Child status: 10
Real time (s): 1.37942
CPU time (s): 1.37679
CPU user time (s): 1.37379
CPU system time (s): 0.002999
CPU usage (%): 99.809
Max. virtual memory (cumulated for all children) (KiB): 2880

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 1.37379
system time used= 0.002999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 637
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= 2

runsolver used 0.003999 second user time and 0.008998 second system time

The end

Launcher Data (download as text)

Begin job on node7 on Tue Feb 27 13:11:29 UTC 2007

IDJOB= 312098
IDBENCH= 20332
IDSOLVER= 111
FILE ID= node7/312098-1172581889

PBS_JOBID= 3971692

Free space on /tmp= 66550 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-S64317265-01-SAT.cnf
COMMAND LINE= /tmp/evaluation/312098-1172581889/march_ks /tmp/evaluation/312098-1172581889/instance-312098-1172581889.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node7/watcher-312098-1172581889 -o ROOT/results/node7/solver-312098-1172581889 -C 1200 -M 1800 --output-limit 1,15  /tmp/evaluation/312098-1172581889/march_ks /tmp/evaluation/312098-1172581889/instance-312098-1172581889.cnf            

META MD5SUM SOLVER= cd0143c15836d32fe9acb8d523a59b67
MD5SUM BENCH=  5d31125289b1c834540b6ea9a0288381

RANDOM SEED= 254238587

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node7.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:       1617248 kB
Buffers:         50568 kB
Cached:         294148 kB
SwapCached:       9088 kB
Active:         220876 kB
Inactive:       146900 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1617248 kB
SwapTotal:     4192956 kB
SwapFree:      4147496 kB
Dirty:            2504 kB
Writeback:           0 kB
Mapped:          29792 kB
Slab:            56476 kB
Committed_AS:   931032 kB
PageTables:       1764 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= 66550 MiB

End job on node7 on Tue Feb 27 13:11:31 UTC 2007