Trace number 1518002

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. The first timestamp (if present) is estimated CPU time. The last timestamp is wall clock 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_nn nnUNSAT 19.698 19.7065

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/UNKNOWN/360/
unif-k3-r4.25-v360-c1530-S305156909-031.cnf
MD5SUM94fbc938c49a6d0bc295232a6f2b8a2c
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark17.5223
Satisfiable
(Un)Satisfiability was proved
Number of variables360
Number of clauses1530
Sum of the clauses size4590
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 31530
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

0.00/0.01	c main():: ***                                   [ march satisfiability solver ]                                   ***
0.00/0.01	c main()::  **                Copyright (C) 2001-2009 M.J.H. Heule, J.E. van Zwieten, and M. Dufour                 **
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 1530 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, 5 satisfied and 0 duplicate clauses
0.00/0.01	c preprocessing fase I completed:: there are now 359 free variables and 1525 clauses.
0.00/0.01	c stat :: sign balance is biased by 0.412
0.00/0.01	c using 3-SAT heuristics (occurence based diff)
0.00/0.01	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
0.00/0.01	c simplify_formula():: removed 0 tautological, 0 satisfied and 161 duplicate clauses
0.00/0.01	c resolvent_look() :: found 90 resolvents
0.00/0.01	c lessRedundantTransformation():: nothing to be done.
0.00/0.01	c transformTo3SAT():: you gave me 360 variables and 1615 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 1615 clauses.
0.00/0.01	c main():: clause / variable ratio: ( 1615 / 360 ) = 4.49
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 number of free variables = 359
0.00/0.01	c dynamic_preselect_setsize :: off
0.00/0.01	c main():: all systems go!
0.00/0.01	c |----------------------------------------------------------------|
c |*
c |**
c |****
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c |****************
c |********************************
c |****************************************************************| ( 0/999) NodeCount: 24
0.00/0.02	c |----------------------------------------------------------------|
c |*
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c |****************************************************************| ( 1/999) NodeCount: 245
0.06/0.08	c |----------------------------------------------------------------|
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c |****************************************************************| ( 2/999) NodeCount: 1374
0.39/0.46	c |----------------------------------------------------------------|
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c |****************************************************************| ( 3/999) NodeCount: 4936
1.79/1.84	c |----------------------------------------------------------------|
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c |****************************************************************| ( 4/999) NodeCount: 12211
5.09/5.18	c |----------------------------------------------------------------|
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c |****************************************************************| ( 5/999) NodeCount: 21902
10.18/10.20	c |----------------------------------------------------------------|
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c |****************************************************************| ( 6/999) NodeCount: 30553
15.09/15.13	c |----------------------------------------------------------------|
c |*
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c |****************************************************************| ( 7/999) NodeCount: 35635
18.19/18.24	c |----------------------------------------------------------------|
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c |****************************************************************| ( 8/999) NodeCount: 37446
19.29/19.39	c |----------------------------------------------------------------|
c |*
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c |****************************************************************| ( 9/999) NodeCount: 37824
19.59/19.65	c |----------------------------------------------------------------|
c |**
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c |****************************************************************| (10/999) NodeCount: 37882
19.59/19.69	c |----------------------------------------------------------------|
c |****
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c |********
c |****************
c |********************************
c |****************************************************************| (11/999) NodeCount: 37890
19.69/19.70	c |----------------------------------------------------------------|
c |
19.69/19.70	c
19.69/19.70	c main():: nodeCount: 37890
19.69/19.70	c main():: dead ends in main: 951
19.69/19.70	c main():: lookAheadCount: 2676226
19.69/19.70	c main():: unitResolveCount: 658992
19.69/19.70	c main():: time=19.690000
19.69/19.70	c main():: necessary_assignments: 8719
19.69/19.70	c main():: bin_sat: 0, bin_unsat 0
19.69/19.70	c main():: doublelook: #: 149770, succes #: 108398
19.69/19.70	c main():: doublelook: overall 5.782 of all possible doublelooks executed
19.69/19.70	c main():: doublelook: succesrate: 72.376, average DL_trigger: 45.842
19.69/19.70	s UNSATISFIABLE

Verifier Data 

No possible verification on an UNSAT instance

Watcher Data 

runsolver version 3.2.9 (svn:489) (c) roussel@cril.univ-artois.fr

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-1518002-1238293761/watcher-1518002-1238293761 -o /tmp/evaluation-result-1518002-1238293761/solver-1518002-1238293761 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/march_nn HOME/instance-1518002-1238293761.cnf 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1230 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 1800 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: 1.05 1.07 1.05 3/64 7484
/proc/meminfo: memFree=816760/2055920 swapFree=4174204/4192956
[pid=7484] ppid=7482 vsize=972 CPUtime=0
/proc/7484/stat : 7484 (march_nn) R 7482 7484 4050 0 -1 4194304 135 0 0 0 0 0 0 0 18 0 1 0 1102041770 995328 118 1992294400 134512640 135197250 4294956240 18446744073709551615 134560979 0 0 4096 0 0 0 0 17 1 0 0
/proc/7484/statm: 243 118 67 167 0 74 0

[startup+0.0725859 s]
/proc/loadavg: 1.05 1.07 1.05 3/64 7484
/proc/meminfo: memFree=816760/2055920 swapFree=4174204/4192956
[pid=7484] ppid=7482 vsize=1508 CPUtime=0.06
/proc/7484/stat : 7484 (march_nn) R 7482 7484 4050 0 -1 4194304 241 0 0 0 6 0 0 0 18 0 1 0 1102041770 1544192 224 1992294400 134512640 135197250 4294956240 18446744073709551615 134539156 0 0 4096 0 0 0 0 17 1 0 0
/proc/7484/statm: 377 224 93 167 0 208 0
Current children cumulated CPU time (s) 0.06
Current children cumulated vsize (KiB) 1508

[startup+0.101589 s]
/proc/loadavg: 1.05 1.07 1.05 3/64 7484
/proc/meminfo: memFree=816760/2055920 swapFree=4174204/4192956
[pid=7484] ppid=7482 vsize=1508 CPUtime=0.09
/proc/7484/stat : 7484 (march_nn) R 7482 7484 4050 0 -1 4194304 245 0 0 0 9 0 0 0 18 0 1 0 1102041770 1544192 228 1992294400 134512640 135197250 4294956240 18446744073709551615 134525344 0 0 4096 0 0 0 0 17 1 0 0
/proc/7484/statm: 377 228 93 167 0 208 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 1508

[startup+0.301618 s]
/proc/loadavg: 1.05 1.07 1.05 3/64 7484
/proc/meminfo: memFree=816760/2055920 swapFree=4174204/4192956
[pid=7484] ppid=7482 vsize=1508 CPUtime=0.29
/proc/7484/stat : 7484 (march_nn) R 7482 7484 4050 0 -1 4194304 257 0 0 0 29 0 0 0 19 0 1 0 1102041770 1544192 240 1992294400 134512640 135197250 4294956240 18446744073709551615 134611660 0 0 4096 0 0 0 0 17 1 0 0
/proc/7484/statm: 377 240 93 167 0 208 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 1508

[startup+0.701676 s]
/proc/loadavg: 1.05 1.07 1.05 3/64 7484
/proc/meminfo: memFree=816760/2055920 swapFree=4174204/4192956
[pid=7484] ppid=7482 vsize=1640 CPUtime=0.69
/proc/7484/stat : 7484 (march_nn) R 7482 7484 4050 0 -1 4194304 276 0 0 0 69 0 0 0 23 0 1 0 1102041770 1679360 259 1992294400 134512640 135197250 4294956240 18446744073709551615 134539266 0 0 4096 0 0 0 0 17 1 0 0
/proc/7484/statm: 410 259 93 167 0 241 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 1640

[startup+1.50179 s]
/proc/loadavg: 1.05 1.07 1.05 2/65 7485
/proc/meminfo: memFree=815984/2055920 swapFree=4174204/4192956
[pid=7484] ppid=7482 vsize=1808 CPUtime=1.49
/proc/7484/stat : 7484 (march_nn) R 7482 7484 4050 0 -1 4194304 305 0 0 0 149 0 0 0 25 0 1 0 1102041770 1851392 288 1992294400 134512640 135197250 4294956240 18446744073709551615 134539276 0 0 4096 0 0 0 0 17 1 0 0
/proc/7484/statm: 452 288 93 167 0 283 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 1808

[startup+3.10202 s]
/proc/loadavg: 1.04 1.07 1.05 2/65 7485
/proc/meminfo: memFree=815792/2055920 swapFree=4174204/4192956
[pid=7484] ppid=7482 vsize=2000 CPUtime=3.09
/proc/7484/stat : 7484 (march_nn) R 7482 7484 4050 0 -1 4194304 338 0 0 0 309 0 0 0 25 0 1 0 1102041770 2048000 321 1992294400 134512640 135197250 4294956240 18446744073709551615 134539373 0 0 4096 0 0 0 0 17 1 0 0
/proc/7484/statm: 500 321 93 167 0 331 0
Current children cumulated CPU time (s) 3.09
Current children cumulated vsize (KiB) 2000

[startup+6.30149 s]
/proc/loadavg: 1.04 1.07 1.05 2/65 7485
/proc/meminfo: memFree=815280/2055920 swapFree=4174204/4192956
[pid=7484] ppid=7482 vsize=2456 CPUtime=6.29
/proc/7484/stat : 7484 (march_nn) R 7482 7484 4050 0 -1 4194304 439 0 0 0 629 0 0 0 25 0 1 0 1102041770 2514944 422 1992294400 134512640 135197250 4294956240 18446744073709551615 134539309 0 0 4096 0 0 0 0 17 1 0 0
/proc/7484/statm: 614 422 93 167 0 445 0
Current children cumulated CPU time (s) 6.29
Current children cumulated vsize (KiB) 2456

[startup+12.7014 s]
/proc/loadavg: 1.04 1.07 1.05 2/65 7485
/proc/meminfo: memFree=814768/2055920 swapFree=4174204/4192956
[pid=7484] ppid=7482 vsize=2720 CPUtime=12.68
/proc/7484/stat : 7484 (march_nn) R 7482 7484 4050 0 -1 4194304 573 0 0 0 1268 0 0 0 25 0 1 0 1102041770 2785280 497 1992294400 134512640 135197250 4294956240 18446744073709551615 134525315 0 0 4096 0 0 0 0 17 1 0 0
/proc/7484/statm: 680 497 93 167 0 511 0
Current children cumulated CPU time (s) 12.68
Current children cumulated vsize (KiB) 2720

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

[startup+15.9019 s]
/proc/loadavg: 1.04 1.07 1.05 2/65 7485
/proc/meminfo: memFree=814704/2055920 swapFree=4174204/4192956
[pid=7484] ppid=7482 vsize=3060 CPUtime=15.89
/proc/7484/stat : 7484 (march_nn) R 7482 7484 4050 0 -1 4194304 615 0 0 0 1588 1 0 0 25 0 1 0 1102041770 3133440 539 1992294400 134512640 135197250 4294956240 18446744073709551615 134593754 0 0 4096 0 0 0 0 17 1 0 0
/proc/7484/statm: 765 539 93 167 0 596 0
Current children cumulated CPU time (s) 15.89
Current children cumulated vsize (KiB) 3060

[startup+17.5011 s]
/proc/loadavg: 1.03 1.07 1.05 2/65 7485
/proc/meminfo: memFree=814576/2055920 swapFree=4174204/4192956
[pid=7484] ppid=7482 vsize=3060 CPUtime=17.49
/proc/7484/stat : 7484 (march_nn) R 7482 7484 4050 0 -1 4194304 635 0 0 0 1748 1 0 0 25 0 1 0 1102041770 3133440 559 1992294400 134512640 135197250 4294956240 18446744073709551615 134542169 0 0 4096 0 0 0 0 17 1 0 0
/proc/7484/statm: 765 559 93 167 0 596 0
Current children cumulated CPU time (s) 17.49
Current children cumulated vsize (KiB) 3060

[startup+19.1013 s]
/proc/loadavg: 1.03 1.07 1.05 2/65 7485
/proc/meminfo: memFree=814576/2055920 swapFree=4174204/4192956
[pid=7484] ppid=7482 vsize=3060 CPUtime=19.09
/proc/7484/stat : 7484 (march_nn) R 7482 7484 4050 0 -1 4194304 655 0 0 0 1908 1 0 0 25 0 1 0 1102041770 3133440 579 1992294400 134512640 135197250 4294956240 18446744073709551615 134542163 0 0 4096 0 0 0 0 17 1 0 0
/proc/7484/statm: 765 579 93 167 0 596 0
Current children cumulated CPU time (s) 19.09
Current children cumulated vsize (KiB) 3060

[startup+19.5014 s]
/proc/loadavg: 1.03 1.07 1.05 2/65 7485
/proc/meminfo: memFree=814576/2055920 swapFree=4174204/4192956
[pid=7484] ppid=7482 vsize=3060 CPUtime=19.49
/proc/7484/stat : 7484 (march_nn) R 7482 7484 4050 0 -1 4194304 660 0 0 0 1948 1 0 0 25 0 1 0 1102041770 3133440 584 1992294400 134512640 135197250 4294956240 18446744073709551615 134572898 0 0 4096 0 0 0 0 17 1 0 0
/proc/7484/statm: 765 584 93 167 0 596 0
Current children cumulated CPU time (s) 19.49
Current children cumulated vsize (KiB) 3060

[startup+19.7014 s]
/proc/loadavg: 1.03 1.07 1.05 2/65 7485
/proc/meminfo: memFree=814512/2055920 swapFree=4174204/4192956
[pid=7484] ppid=7482 vsize=3060 CPUtime=19.69
/proc/7484/stat : 7484 (march_nn) R 7482 7484 4050 0 -1 4194304 662 0 0 0 1968 1 0 0 25 0 1 0 1102041770 3133440 586 1992294400 134512640 135197250 4294956240 18446744073709551615 134522760 0 0 4096 0 0 0 0 17 1 0 0
/proc/7484/statm: 765 586 93 167 0 596 0
Current children cumulated CPU time (s) 19.69
Current children cumulated vsize (KiB) 3060

Child status: 20
Real time (s): 19.7065
CPU time (s): 19.698
CPU user time (s): 19.684
CPU system time (s): 0.013997
CPU usage (%): 99.9568
Max. virtual memory (cumulated for all children) (KiB): 3060

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 19.684
system time used= 0.013997
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 664
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= 2
involuntary context switches= 41

runsolver used 0.028995 second user time and 0.053991 second system time

The end

Launcher Data 

Begin job on node22 at 2009-03-29 04:29:21
IDJOB=1518002
IDBENCH=70643
IDSOLVER=522
FILE ID=node22/1518002-1238293761
PBS_JOBID= 9060973
Free space on /tmp= 66328 MiB

SOLVER NAME= march_nn nn
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/UNKNOWN/360/unif-k3-r4.25-v360-c1530-S305156909-031.cnf
COMMAND LINE= HOME/march_nn BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1518002-1238293761/watcher-1518002-1238293761 -o /tmp/evaluation-result-1518002-1238293761/solver-1518002-1238293761 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/march_nn HOME/instance-1518002-1238293761.cnf

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB
MAX NB THREAD= 0

MD5SUM BENCH= 94fbc938c49a6d0bc295232a6f2b8a2c
RANDOM SEED=1340374174

node22.alineos.net Linux 2.6.9-22.EL.rootsmp #1 SMP Mon Oct 3 08:59:52 CEST 2005

/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		: 3000.279
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		: 3000.279
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:        817176 kB
Buffers:        104392 kB
Cached:        1023876 kB
SwapCached:      12568 kB
Active:         185368 kB
Inactive:       957108 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:        817176 kB
SwapTotal:     4192956 kB
SwapFree:      4174204 kB
Dirty:             788 kB
Writeback:           0 kB
Mapped:          15640 kB
Slab:            82280 kB
Committed_AS:  2882028 kB
PageTables:       1372 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= 66324 MiB
End job on node22 at 2009-03-29 04:29:40