Trace number 1518001

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_hi hiUNSAT 17.5223 17.5338

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 |*
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c |****************************************************************| ( 0/13) NodeCount: 143
0.04/0.07	c |----------------------------------------------------------------|
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1.69/1.72	c |----------------------------------------------------------------|
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c |****************************************************************| ( 4/13) NodeCount: 20169
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c |****************************************************************| ( 6/13) NodeCount: 33826
15.58/15.69	c |----------------------------------------------------------------|
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c |****************************************************************| ( 7/13) NodeCount: 35973
16.98/17.04	c |----------------------------------------------------------------|
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17.38/17.46	c |----------------------------------------------------------------|
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17.48/17.53	c |----------------------------------------------------------------|
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c |****************************************************************| (10/13) NodeCount: 36678
17.48/17.53	c |----------------------------------------------------------------|
c |
17.48/17.53	c
17.48/17.53	c main():: nodeCount: 36678
17.48/17.53	c main():: dead ends in main: 927
17.48/17.53	c main():: lookAheadCount: 2632507
17.48/17.53	c main():: unitResolveCount: 405576
17.48/17.53	c main():: time=17.510000
17.48/17.53	c main():: necessary_assignments: 7963
17.48/17.53	c main():: bin_sat: 0, bin_unsat 0
17.48/17.53	c main():: doublelook: #: 146820, succes #: 106520
17.48/17.53	c main():: doublelook: overall 5.764 of all possible doublelooks executed
17.48/17.53	c main():: doublelook: succesrate: 72.551, average DL_trigger: 46.152
17.48/17.53	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-1518001-1238293751/watcher-1518001-1238293751 -o /tmp/evaluation-result-1518001-1238293751/solver-1518001-1238293751 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/march_hi HOME/instance-1518001-1238293751.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: 1.00 1.09 1.07 3/76 24567
/proc/meminfo: memFree=1217472/2055920 swapFree=4173544/4192956
[pid=24567] ppid=24565 vsize=972 CPUtime=0
/proc/24567/stat : 24567 (march_hi) R 24565 24567 19552 0 -1 4194304 135 0 0 0 0 0 0 0 18 0 1 0 1102036329 995328 118 1992294400 134512640 135197378 4294956240 18446744073709551615 134528032 0 0 4096 0 0 0 0 17 1 0 0
/proc/24567/statm: 243 118 67 167 0 74 0

[startup+0.042846 s]
/proc/loadavg: 1.00 1.09 1.07 3/76 24567
/proc/meminfo: memFree=1217472/2055920 swapFree=4173544/4192956
[pid=24567] ppid=24565 vsize=1508 CPUtime=0.04
/proc/24567/stat : 24567 (march_hi) R 24565 24567 19552 0 -1 4194304 237 0 0 0 4 0 0 0 18 0 1 0 1102036329 1544192 220 1992294400 134512640 135197378 4294956240 18446744073709551615 134539320 0 0 4096 0 0 0 0 17 1 0 0
/proc/24567/statm: 377 220 91 167 0 208 0
Current children cumulated CPU time (s) 0.04
Current children cumulated vsize (KiB) 1508

[startup+0.10185 s]
/proc/loadavg: 1.00 1.09 1.07 3/76 24567
/proc/meminfo: memFree=1217472/2055920 swapFree=4173544/4192956
[pid=24567] ppid=24565 vsize=1508 CPUtime=0.09
/proc/24567/stat : 24567 (march_hi) R 24565 24567 19552 0 -1 4194304 243 0 0 0 9 0 0 0 18 0 1 0 1102036329 1544192 226 1992294400 134512640 135197378 4294956240 18446744073709551615 134539276 0 0 4096 0 0 0 0 17 1 0 0
/proc/24567/statm: 377 226 91 167 0 208 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 1508

[startup+0.301868 s]
/proc/loadavg: 1.00 1.09 1.07 3/76 24567
/proc/meminfo: memFree=1217472/2055920 swapFree=4173544/4192956
[pid=24567] ppid=24565 vsize=1508 CPUtime=0.29
/proc/24567/stat : 24567 (march_hi) R 24565 24567 19552 0 -1 4194304 256 0 0 0 29 0 0 0 19 0 1 0 1102036329 1544192 239 1992294400 134512640 135197378 4294956240 18446744073709551615 134525291 0 0 4096 0 0 0 0 17 1 0 0
/proc/24567/statm: 377 239 91 167 0 208 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 1508

[startup+0.7019 s]
/proc/loadavg: 1.00 1.09 1.07 3/76 24567
/proc/meminfo: memFree=1217472/2055920 swapFree=4173544/4192956
[pid=24567] ppid=24565 vsize=1640 CPUtime=0.69
/proc/24567/stat : 24567 (march_hi) R 24565 24567 19552 0 -1 4194304 269 0 0 0 69 0 0 0 23 0 1 0 1102036329 1679360 252 1992294400 134512640 135197378 4294956240 18446744073709551615 134552753 0 0 4096 0 0 0 0 17 1 0 0
/proc/24567/statm: 410 252 91 167 0 241 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 1640

[startup+1.50297 s]
/proc/loadavg: 1.00 1.09 1.07 2/77 24568
/proc/meminfo: memFree=1216696/2055920 swapFree=4173544/4192956
[pid=24567] ppid=24565 vsize=1640 CPUtime=1.49
/proc/24567/stat : 24567 (march_hi) R 24565 24567 19552 0 -1 4194304 276 0 0 0 149 0 0 0 25 0 1 0 1102036329 1679360 259 1992294400 134512640 135197378 4294956240 18446744073709551615 134552521 0 0 4096 0 0 0 0 17 1 0 0
/proc/24567/statm: 410 259 91 167 0 241 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 1640

[startup+3.1011 s]
/proc/loadavg: 1.00 1.09 1.06 2/77 24568
/proc/meminfo: memFree=1216568/2055920 swapFree=4173544/4192956
[pid=24567] ppid=24565 vsize=1640 CPUtime=3.09
/proc/24567/stat : 24567 (march_hi) R 24565 24567 19552 0 -1 4194304 283 0 0 0 309 0 0 0 25 0 1 0 1102036329 1679360 266 1992294400 134512640 135197378 4294956240 18446744073709551615 134570813 0 0 4096 0 0 0 0 17 1 0 0
/proc/24567/statm: 410 266 91 167 0 241 0
Current children cumulated CPU time (s) 3.09
Current children cumulated vsize (KiB) 1640

[startup+6.30137 s]
/proc/loadavg: 1.00 1.09 1.06 2/77 24568
/proc/meminfo: memFree=1216440/2055920 swapFree=4173544/4192956
[pid=24567] ppid=24565 vsize=1812 CPUtime=6.29
/proc/24567/stat : 24567 (march_hi) R 24565 24567 19552 0 -1 4194304 301 0 0 0 629 0 0 0 25 0 1 0 1102036329 1855488 284 1992294400 134512640 135197378 4294956240 18446744073709551615 134525324 0 0 4096 0 0 0 0 17 1 0 0
/proc/24567/statm: 453 284 91 167 0 284 0
Current children cumulated CPU time (s) 6.29
Current children cumulated vsize (KiB) 1812

[startup+12.7019 s]
/proc/loadavg: 1.00 1.08 1.06 2/77 24568
/proc/meminfo: memFree=1216248/2055920 swapFree=4173544/4192956
[pid=24567] ppid=24565 vsize=1812 CPUtime=12.69
/proc/24567/stat : 24567 (march_hi) R 24565 24567 19552 0 -1 4194304 320 0 0 0 1269 0 0 0 25 0 1 0 1102036329 1855488 303 1992294400 134512640 135197378 4294956240 18446744073709551615 134613280 0 0 4096 0 0 0 0 17 1 0 0
/proc/24567/statm: 453 303 91 167 0 284 0
Current children cumulated CPU time (s) 12.69
Current children cumulated vsize (KiB) 1812

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

[startup+15.9012 s]
/proc/loadavg: 1.00 1.08 1.06 2/77 24568
/proc/meminfo: memFree=1216120/2055920 swapFree=4173544/4192956
[pid=24567] ppid=24565 vsize=1956 CPUtime=15.88
/proc/24567/stat : 24567 (march_hi) R 24565 24567 19552 0 -1 4194304 365 0 0 0 1588 0 0 0 25 0 1 0 1102036329 2002944 347 1992294400 134512640 135197378 4294956240 18446744073709551615 134552507 0 0 4096 0 0 0 0 17 1 0 0
/proc/24567/statm: 489 347 91 167 0 320 0
Current children cumulated CPU time (s) 15.88
Current children cumulated vsize (KiB) 1956

[startup+16.7012 s]
/proc/loadavg: 1.00 1.08 1.06 2/77 24568
/proc/meminfo: memFree=1216120/2055920 swapFree=4173544/4192956
[pid=24567] ppid=24565 vsize=1956 CPUtime=16.68
/proc/24567/stat : 24567 (march_hi) R 24565 24567 19552 0 -1 4194304 368 0 0 0 1668 0 0 0 25 0 1 0 1102036329 2002944 350 1992294400 134512640 135197378 4294956240 18446744073709551615 134556325 0 0 4096 0 0 0 0 17 1 0 0
/proc/24567/statm: 489 350 91 167 0 320 0
Current children cumulated CPU time (s) 16.68
Current children cumulated vsize (KiB) 1956

[startup+17.1013 s]
/proc/loadavg: 1.00 1.08 1.06 2/77 24568
/proc/meminfo: memFree=1216120/2055920 swapFree=4173544/4192956
[pid=24567] ppid=24565 vsize=1956 CPUtime=17.08
/proc/24567/stat : 24567 (march_hi) R 24565 24567 19552 0 -1 4194304 370 0 0 0 1708 0 0 0 25 0 1 0 1102036329 2002944 352 1992294400 134512640 135197378 4294956240 18446744073709551615 134525320 0 0 4096 0 0 0 0 17 1 0 0
/proc/24567/statm: 489 352 91 167 0 320 0
Current children cumulated CPU time (s) 17.08
Current children cumulated vsize (KiB) 1956

[startup+17.5013 s]
/proc/loadavg: 1.00 1.08 1.06 2/77 24568
/proc/meminfo: memFree=1216056/2055920 swapFree=4173544/4192956
[pid=24567] ppid=24565 vsize=2056 CPUtime=17.48
/proc/24567/stat : 24567 (march_hi) R 24565 24567 19552 0 -1 4194304 372 0 0 0 1748 0 0 0 25 0 1 0 1102036329 2105344 354 1992294400 134512640 135197378 4294956240 18446744073709551615 134548531 0 0 4096 0 0 0 0 17 1 0 0
/proc/24567/statm: 514 354 91 167 0 345 0
Current children cumulated CPU time (s) 17.48
Current children cumulated vsize (KiB) 2056

Child status: 20
Real time (s): 17.5338
CPU time (s): 17.5223
CPU user time (s): 17.5163
CPU system time (s): 0.005999
CPU usage (%): 99.9349
Max. virtual memory (cumulated for all children) (KiB): 2056

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 17.5163
system time used= 0.005999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 375
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= 357

runsolver used 0.026995 second user time and 0.05999 second system time

The end

Launcher Data 

Begin job on node65 at 2009-03-29 04:29:11
IDJOB=1518001
IDBENCH=70643
IDSOLVER=521
FILE ID=node65/1518001-1238293751
PBS_JOBID= 9060934
Free space on /tmp= 66268 MiB

SOLVER NAME= march_hi hi
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/UNKNOWN/360/unif-k3-r4.25-v360-c1530-S305156909-031.cnf
COMMAND LINE= HOME/march_hi BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1518001-1238293751/watcher-1518001-1238293751 -o /tmp/evaluation-result-1518001-1238293751/solver-1518001-1238293751 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/march_hi HOME/instance-1518001-1238293751.cnf

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

MD5SUM BENCH= 94fbc938c49a6d0bc295232a6f2b8a2c
RANDOM SEED=1348180270

node65.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		: 3000.231
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		: 3000.231
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:       1217888 kB
Buffers:         88676 kB
Cached:         650248 kB
SwapCached:      10232 kB
Active:         181000 kB
Inactive:       569696 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1217888 kB
SwapTotal:     4192956 kB
SwapFree:      4173544 kB
Dirty:             792 kB
Writeback:           0 kB
Mapped:          17012 kB
Slab:            72020 kB
Committed_AS:  3274720 kB
PageTables:       2316 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= 66268 MiB
End job on node65 at 2009-03-29 04:29:29