Trace number 1517821

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 27.5188 27.5407

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/UNKNOWN/380/
unif-k3-r4.25-v380-c1615-S1700363952-014.cnf
MD5SUM29b15a76839bb4e367777518dfae2822
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark27.5188
Satisfiable
(Un)Satisfiability was proved
Number of variables380
Number of clauses1615
Sum of the clauses size4845
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 31615
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 380 variables and 1615 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, 10 satisfied and 0 duplicate clauses
0.00/0.01	c preprocessing fase I completed:: there are now 378 free variables and 1605 clauses.
0.00/0.01	c stat :: sign balance is biased by 0.508
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 171 duplicate clauses
0.00/0.01	c resolvent_look() :: found 99 resolvents
0.00/0.01	c lessRedundantTransformation():: nothing to be done.
0.00/0.01	c transformTo3SAT():: you gave me 380 variables and 1704 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 380 variabels and 1704 clauses.
0.00/0.01	c main():: clause / variable ratio: ( 1704 / 380 ) = 4.48
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 = 378
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 |********************************
c |****************************************************************| ( 0/14) NodeCount: 132
0.02/0.06	c |----------------------------------------------------------------|
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c |****************************************************************| ( 1/14) NodeCount: 863
0.29/0.35	c |----------------------------------------------------------------|
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c |****************************************************************| ( 2/14) NodeCount: 3801
1.49/1.53	c |----------------------------------------------------------------|
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c |****************************************************************| ( 3/14) NodeCount: 11055
4.49/4.51	c |----------------------------------------------------------------|
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c |****************************************************************| ( 4/14) NodeCount: 23624
9.79/9.84	c |----------------------------------------------------------------|
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c |****************************************************************| ( 5/14) NodeCount: 38402
16.28/16.30	c |----------------------------------------------------------------|
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c |****************************************************************| ( 6/14) NodeCount: 50781
22.08/22.19	c |----------------------------------------------------------------|
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c |****************************************************************| ( 7/14) NodeCount: 57748
25.88/25.90	c |----------------------------------------------------------------|
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c |****************************************************************| ( 8/14) NodeCount: 60023
27.17/27.25	c |----------------------------------------------------------------|
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c |****************************************************************| ( 9/14) NodeCount: 60418
27.48/27.51	c |----------------------------------------------------------------|
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c |****************************************************************| (10/14) NodeCount: 60455
27.48/27.53	c |----------------------------------------------------------------|
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c |****************************************************************| (11/14) NodeCount: 60457
27.48/27.53	c |----------------------------------------------------------------|
c |
27.48/27.54	c
27.48/27.54	c main():: nodeCount: 60457
27.48/27.54	c main():: dead ends in main: 1105
27.48/27.54	c main():: lookAheadCount: 4217444
27.48/27.54	c main():: unitResolveCount: 646774
27.48/27.54	c main():: time=27.510000
27.48/27.54	c main():: necessary_assignments: 11804
27.48/27.54	c main():: bin_sat: 0, bin_unsat 0
27.48/27.54	c main():: doublelook: #: 243339, succes #: 176589
27.48/27.54	c main():: doublelook: overall 5.965 of all possible doublelooks executed
27.48/27.54	c main():: doublelook: succesrate: 72.569, average DL_trigger: 48.762
27.48/27.54	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-1517821-1238291574/watcher-1517821-1238291574 -o /tmp/evaluation-result-1517821-1238291574/solver-1517821-1238291574 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/march_hi HOME/instance-1517821-1238291574.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: 0.91 0.95 0.98 2/81 17673
/proc/meminfo: memFree=1101240/2055920 swapFree=4174588/4192956
[pid=17673] ppid=17671 vsize=972 CPUtime=0
/proc/17673/stat : 17673 (march_hi) R 17671 17673 17423 0 -1 4194304 138 0 0 0 0 0 0 0 18 0 1 0 706052475 995328 121 1992294400 134512640 135197378 4294956240 18446744073709551615 134565169 0 0 4096 0 0 0 0 17 1 0 0
/proc/17673/statm: 243 121 67 167 0 74 0

[startup+0.0247009 s]
/proc/loadavg: 0.91 0.95 0.98 2/81 17673
/proc/meminfo: memFree=1101240/2055920 swapFree=4174588/4192956
[pid=17673] ppid=17671 vsize=1536 CPUtime=0.02
/proc/17673/stat : 17673 (march_hi) R 17671 17673 17423 0 -1 4194304 236 0 0 0 2 0 0 0 18 0 1 0 706052475 1572864 219 1992294400 134512640 135197378 4294956240 18446744073709551615 134697414 0 0 4096 0 0 0 0 17 1 0 0
/proc/17673/statm: 384 219 91 167 0 215 0
Current children cumulated CPU time (s) 0.02
Current children cumulated vsize (KiB) 1536

[startup+0.101716 s]
/proc/loadavg: 0.91 0.95 0.98 2/81 17673
/proc/meminfo: memFree=1101240/2055920 swapFree=4174588/4192956
[pid=17673] ppid=17671 vsize=1536 CPUtime=0.09
/proc/17673/stat : 17673 (march_hi) R 17671 17673 17423 0 -1 4194304 252 0 0 0 9 0 0 0 18 0 1 0 706052475 1572864 235 1992294400 134512640 135197378 4294956240 18446744073709551615 134552735 0 0 4096 0 0 0 0 17 1 0 0
/proc/17673/statm: 384 235 91 167 0 215 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 1536

[startup+0.301754 s]
/proc/loadavg: 0.91 0.95 0.98 2/81 17673
/proc/meminfo: memFree=1101240/2055920 swapFree=4174588/4192956
[pid=17673] ppid=17671 vsize=1668 CPUtime=0.29
/proc/17673/stat : 17673 (march_hi) R 17671 17673 17423 0 -1 4194304 261 0 0 0 29 0 0 0 20 0 1 0 706052475 1708032 244 1992294400 134512640 135197378 4294956240 18446744073709551615 134525281 0 0 4096 0 0 0 0 17 1 0 0
/proc/17673/statm: 417 244 91 167 0 248 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 1668

[startup+0.701832 s]
/proc/loadavg: 0.91 0.95 0.98 2/81 17673
/proc/meminfo: memFree=1101240/2055920 swapFree=4174588/4192956
[pid=17673] ppid=17671 vsize=1668 CPUtime=0.69
/proc/17673/stat : 17673 (march_hi) R 17671 17673 17423 0 -1 4194304 269 0 0 0 69 0 0 0 24 0 1 0 706052475 1708032 252 1992294400 134512640 135197378 4294956240 18446744073709551615 134525324 0 0 4096 0 0 0 0 17 1 0 0
/proc/17673/statm: 417 252 91 167 0 248 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 1668

[startup+1.50199 s]
/proc/loadavg: 0.91 0.95 0.98 2/82 17674
/proc/meminfo: memFree=1100528/2055920 swapFree=4174588/4192956
[pid=17673] ppid=17671 vsize=1668 CPUtime=1.49
/proc/17673/stat : 17673 (march_hi) R 17671 17673 17423 0 -1 4194304 279 0 0 0 149 0 0 0 25 0 1 0 706052475 1708032 262 1992294400 134512640 135197378 4294956240 18446744073709551615 134525291 0 0 4096 0 0 0 0 17 1 0 0
/proc/17673/statm: 417 262 91 167 0 248 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 1668

[startup+3.1013 s]
/proc/loadavg: 0.91 0.95 0.98 2/82 17674
/proc/meminfo: memFree=1100336/2055920 swapFree=4174588/4192956
[pid=17673] ppid=17671 vsize=1668 CPUtime=3.09
/proc/17673/stat : 17673 (march_hi) R 17671 17673 17423 0 -1 4194304 290 0 0 0 309 0 0 0 25 0 1 0 706052475 1708032 273 1992294400 134512640 135197378 4294956240 18446744073709551615 134539253 0 0 4096 0 0 0 0 17 1 0 0
/proc/17673/statm: 417 273 91 167 0 248 0
Current children cumulated CPU time (s) 3.09
Current children cumulated vsize (KiB) 1668

[startup+6.30192 s]
/proc/loadavg: 0.92 0.95 0.98 2/82 17674
/proc/meminfo: memFree=1100208/2055920 swapFree=4174588/4192956
[pid=17673] ppid=17671 vsize=1848 CPUtime=6.29
/proc/17673/stat : 17673 (march_hi) R 17671 17673 17423 0 -1 4194304 312 0 0 0 629 0 0 0 25 0 1 0 706052475 1892352 295 1992294400 134512640 135197378 4294956240 18446744073709551615 134542255 0 0 4096 0 0 0 0 17 1 0 0
/proc/17673/statm: 462 295 91 167 0 293 0
Current children cumulated CPU time (s) 6.29
Current children cumulated vsize (KiB) 1848

[startup+12.7012 s]
/proc/loadavg: 0.93 0.95 0.98 2/82 17674
/proc/meminfo: memFree=1099888/2055920 swapFree=4174588/4192956
[pid=17673] ppid=17671 vsize=1992 CPUtime=12.69
/proc/17673/stat : 17673 (march_hi) R 17671 17673 17423 0 -1 4194304 368 0 0 0 1269 0 0 0 25 0 1 0 706052475 2039808 349 1992294400 134512640 135197378 4294956240 18446744073709551615 134615970 0 0 4096 0 0 0 0 17 1 0 0
/proc/17673/statm: 498 349 91 167 0 329 0
Current children cumulated CPU time (s) 12.69
Current children cumulated vsize (KiB) 1992

[startup+25.5016 s]
/proc/loadavg: 0.94 0.96 0.98 2/82 17674
/proc/meminfo: memFree=1099632/2055920 swapFree=4174588/4192956
[pid=17673] ppid=17671 vsize=2244 CPUtime=25.48
/proc/17673/stat : 17673 (march_hi) R 17671 17673 17423 0 -1 4194304 424 0 0 0 2548 0 0 0 25 0 1 0 706052475 2297856 405 1992294400 134512640 135197378 4294956240 18446744073709551615 134539352 0 0 4096 0 0 0 0 17 1 0 0
/proc/17673/statm: 561 405 91 167 0 392 0
Current children cumulated CPU time (s) 25.48
Current children cumulated vsize (KiB) 2244

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

[startup+26.3018 s]
/proc/loadavg: 0.94 0.96 0.98 2/82 17674
/proc/meminfo: memFree=1099568/2055920 swapFree=4174588/4192956
[pid=17673] ppid=17671 vsize=2244 CPUtime=26.28
/proc/17673/stat : 17673 (march_hi) R 17671 17673 17423 0 -1 4194304 429 0 0 0 2628 0 0 0 25 0 1 0 706052475 2297856 410 1992294400 134512640 135197378 4294956240 18446744073709551615 134597458 0 0 4096 0 0 0 0 17 1 0 0
/proc/17673/statm: 561 410 91 167 0 392 0
Current children cumulated CPU time (s) 26.28
Current children cumulated vsize (KiB) 2244

[startup+27.102 s]
/proc/loadavg: 0.94 0.96 0.98 2/82 17674
/proc/meminfo: memFree=1099568/2055920 swapFree=4174588/4192956
[pid=17673] ppid=17671 vsize=2244 CPUtime=27.07
/proc/17673/stat : 17673 (march_hi) R 17671 17673 17423 0 -1 4194304 434 0 0 0 2707 0 0 0 25 0 1 0 706052475 2297856 415 1992294400 134512640 135197378 4294956240 18446744073709551615 134542189 0 0 4096 0 0 0 0 17 1 0 0
/proc/17673/statm: 561 415 91 167 0 392 0
Current children cumulated CPU time (s) 27.07
Current children cumulated vsize (KiB) 2244

[startup+27.508 s]
/proc/loadavg: 0.94 0.96 0.98 2/82 17674
/proc/meminfo: memFree=1099568/2055920 swapFree=4174588/4192956
[pid=17673] ppid=17671 vsize=2244 CPUtime=27.48
/proc/17673/stat : 17673 (march_hi) R 17671 17673 17423 0 -1 4194304 436 0 0 0 2748 0 0 0 25 0 1 0 706052475 2297856 417 1992294400 134512640 135197378 4294956240 18446744073709551615 134605243 0 0 4096 0 0 0 0 17 1 0 0
/proc/17673/statm: 561 417 91 167 0 392 0
Current children cumulated CPU time (s) 27.48
Current children cumulated vsize (KiB) 2244

Child status: 20
Real time (s): 27.5407
CPU time (s): 27.5188
CPU user time (s): 27.5158
CPU system time (s): 0.002999
CPU usage (%): 99.9207
Max. virtual memory (cumulated for all children) (KiB): 2244

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 27.5158
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= 439
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= 539

runsolver used 0.038994 second user time and 0.106983 second system time

The end

Launcher Data 

Begin job on node88 at 2009-03-29 03:52:54
IDJOB=1517821
IDBENCH=70628
IDSOLVER=521
FILE ID=node88/1517821-1238291574
PBS_JOBID= 9061007
Free space on /tmp= 66476 MiB

SOLVER NAME= march_hi hi
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/UNKNOWN/380/unif-k3-r4.25-v380-c1615-S1700363952-014.cnf
COMMAND LINE= HOME/march_hi BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1517821-1238291574/watcher-1517821-1238291574 -o /tmp/evaluation-result-1517821-1238291574/solver-1517821-1238291574 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/march_hi HOME/instance-1517821-1238291574.cnf

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

MD5SUM BENCH= 29b15a76839bb4e367777518dfae2822
RANDOM SEED=1977483635

node88.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		: 3000.281
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		: 3000.281
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	: 5996.54
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2055920 kB
MemFree:       1101720 kB
Buffers:         85736 kB
Cached:         775016 kB
SwapCached:       7608 kB
Active:         154564 kB
Inactive:       715560 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1101720 kB
SwapTotal:     4192956 kB
SwapFree:      4174588 kB
Dirty:             792 kB
Writeback:           0 kB
Mapped:          14912 kB
Slab:            68260 kB
Committed_AS:  1775744 kB
PageTables:       2664 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= 66476 MiB
End job on node88 at 2009-03-29 03:53:22