Trace number 1773691

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
precosat 236UNSAT 26.034 26.042

General information on the benchmark

NameAPPLICATIONS/
bitverif/minand/minand128.cnf
MD5SUM34e3afebec3eaf03cbcceb51b352993a
Bench CategoryAPPLICATION (applications instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark15.7056
Satisfiable
(Un)Satisfiability was proved
Number of variables53999
Number of clauses159692
Sum of the clauses size372612
Maximum clause length3
Minimum clause length1
Number of clauses of size 12
Number of clauses of size 2106460
Number of clauses of size 353230
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

0.00/0.00	c PicoSATLight Version 236 3e7a3f8825c0b9e241f38a63fee5517540b2feca
0.00/0.00	c Copyright (C) 2009, Armin Biere, JKU, Linz, Austria.  All rights reserved.
0.00/0.00	c Released on Sun Mar 22 10:16:26 CET 2009
0.00/0.00	c Compiled on Tue Mar 24 21:24:39 CET 2009
0.00/0.00	c g++ (GCC) 4.3.2 20081105 (Red Hat 4.3.2-7)
0.00/0.00	c -O3 -m32 -static -Wall -Wextra -DNDEBUG -DNLOGPRECO -DNSTATSPRECO
0.00/0.00	c -finline-limit=10000000 -fomit-frame-pointer -fno-exceptions
0.00/0.00	c Linux baghera 2.6.27.19-170.2.35.fc10.i686.PAE i686
0.00/0.00	c
0.00/0.00	c reading HOME/instance-1773691-1241186042.cnf
0.00/0.00	c found header 'p cnf 53999 159692'
0.19/0.26	c finished parsing
0.19/0.26	c
0.19/0.26	c --check=0 --verbose=0 --order=3 --simprd=40 --merge=1 --hash=1
0.19/0.26	c --dominate=1 --restart=1 --restartint=100 --rebias=1 --rebiasint=1000
0.19/0.26	c --probe=1 --probeint=100000 --probeprd=10 --decompose=1 --minimize=3
0.19/0.26	c --maxdepth=1000 --strength=10 --elim=1 --elimint=300000 --elimprd=20
0.19/0.26	c --subst=1 --ands=1 --xors=1 --ites=1 --minlimit=1000 --maxlimit=10000000
0.19/0.26	c --random=1 --spread=2000 --seed=0 --skip=25
0.19/0.26	c
0.19/0.26	c sizeof     vars[0] = 16   alignment = 0       1 MB
0.19/0.26	c sizeof     orgs[0] =  8   alignment = 0       0 MB
0.19/0.26	c sizeof     occs[0] =  8   alignment = 0       0 MB
0.19/0.26	c sizeof iirfs[0..1] =  8   alignment = 0       0 MB
0.19/0.26	c
0.19/0.26	c starting search after 0.3 seconds
0.19/0.26	c no decision limit
0.19/0.27	c
0.19/0.27	c       original/binary      fixed     eliminated      learned       agility
0.19/0.27	c   seconds        variables     equivalent    conflicts       height       MB
0.19/0.27	c
0.19/0.27	c *    0.3   159690   53997      2     0      0       0      0    0.0   0   14
17.19/17.25	c s   17.2    60715    2774     24     0  51201       0      0    0.0   0   18
17.19/17.25	c l   17.2    60715    2774     24     0  51201       0  35528    0.0   0   18
17.29/17.30	c R   17.3    60983    2774     24     0  51201     100     94  195.1   9   19
17.29/17.33	c R   17.3    60983    2774     24     0  51201     200    194  296.4   1   19
17.49/17.56	c B   17.6    61652    2768     28     2  51201    1000    986  290.2   4   21
17.78/17.81	c B   17.8    62339    2762     32     4  51201    2000   1960  312.4   8   22
17.78/17.84	c R   17.8    62486    2762     32     4  51201    2155   2114  308.0   6   22
18.78/18.82	c R   18.8    80577    2690     80    28  51201    5426   5332  274.2   9   26
19.58/19.64	c B   19.6    83191    2672     93    33  51201    8004   7907  325.0   5   30
20.48/20.59	c s   20.6    75015    2663     94    41  51201   10549   9937  331.8   6   28
21.68/21.73	c R   21.7    76363    2658     94    46  51201   14510  13897  330.2   8   33
24.88/24.92	c B   24.9    89434    2573    161    64  51201   24008  23386  310.0   7   42
25.98/26.03	c 0   26.0    98725    2391    293   114  51201   27399  26769  303.5   6   44
25.98/26.03	c
25.98/26.03	s UNSATISFIABLE
25.98/26.03	c
25.98/26.03	c 27399 conflicts, 303914 decisions, 164 random
25.98/26.03	c 16 iterations, 134 restarts, 0 skipped
25.98/26.03	c 0 enlarged, 19 shrunken, 267 rescored, 14 rebiased
25.98/26.03	c 2 simplifications, 0 reductions
25.98/26.03	c
25.98/26.03	c vars: 293 fixed, 114 equiv, 51201 elim, 126 merged
25.98/26.03	c elim: 5180744 resolutions, 1 phases, 1 rounds
25.98/26.03	c sbst: 65% substituted, 2.3% nots, 97.7% ands, 0.0% xors, 0.0% ites
25.98/26.03	c arty: 2.58 and 0.00 xor average arity
25.98/26.03	c prbe: 11753 probed, 5 phases, 2 rounds
25.98/26.03	c prbe: 50 failed, 8 lifted, 14 merged
25.98/26.03	c sccs: 3 non trivial, 0 fixed, 3 merged
25.98/26.03	c hash: 24 units, 109 merged
25.98/26.03	c mins: 5540191 learned, 16% deleted, 6 strong, 277 depth
25.98/26.03	c subs: 35 forward, 136 backward, 19024 doms
25.98/26.03	c strs: 145 forward, 4 backward
25.98/26.03	c doms: 20291 dominators, 18677 high, 31 low
25.98/26.03	c prps: 5455845 propagations, 0.21 megaprops
25.98/26.03	c
25.98/26.03	c 26.0 seconds, 44 MB max, 23 MB recycled

Verifier Data 

No possible verification on an UNSAT instance

Watcher Data 

runsolver version 3.2.9 (svn:492) (c) roussel@cril.univ-artois.fr

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-1773691-1241186042/watcher-1773691-1241186042 -o /tmp/evaluation-result-1773691-1241186042/solver-1773691-1241186042 -C 10000 -W 12000 -M 1800 HOME/precosat HOME/instance-1773691-1241186042.cnf 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 10000 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 10030 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 12000 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
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 1.00 1.00 0.96 2/64 22016
/proc/meminfo: memFree=738608/2055920 swapFree=4181256/4192956
[pid=22016] ppid=22014 vsize=2904 CPUtime=0
/proc/22016/stat : 22016 (precosat) R 22014 22016 21896 0 -1 4194304 549 0 0 0 0 0 0 0 18 0 1 0 146637714 2973696 535 1992294400 134512640 135151029 4294956240 18446744073709551615 134534335 0 0 4096 0 0 0 0 17 1 0 0
/proc/22016/statm: 726 536 59 155 0 569 0

[startup+0.0470829 s]
/proc/loadavg: 1.00 1.00 0.96 2/64 22016
/proc/meminfo: memFree=738608/2055920 swapFree=4181256/4192956
[pid=22016] ppid=22014 vsize=7256 CPUtime=0.03
/proc/22016/stat : 22016 (precosat) R 22014 22016 21896 0 -1 4194304 1713 0 0 0 3 0 0 0 18 0 1 0 146637714 7430144 1698 1992294400 134512640 135151029 4294956240 18446744073709551615 134572472 0 0 4096 17442 0 0 0 17 1 0 0
/proc/22016/statm: 1814 1698 63 155 0 1657 0
Current children cumulated CPU time (s) 0.03
Current children cumulated vsize (KiB) 7256

[startup+0.101078 s]
/proc/loadavg: 1.00 1.00 0.96 2/64 22016
/proc/meminfo: memFree=738608/2055920 swapFree=4181256/4192956
[pid=22016] ppid=22014 vsize=9756 CPUtime=0.09
/proc/22016/stat : 22016 (precosat) R 22014 22016 21896 0 -1 4194304 2415 0 0 0 8 1 0 0 18 0 1 0 146637714 9990144 2302 1992294400 134512640 135151029 4294956240 18446744073709551615 134682423 0 0 4096 17442 0 0 0 17 1 0 0
/proc/22016/statm: 2439 2303 63 155 0 2282 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 9756

[startup+0.301097 s]
/proc/loadavg: 1.00 1.00 0.96 2/64 22016
/proc/meminfo: memFree=738608/2055920 swapFree=4181256/4192956
[pid=22016] ppid=22014 vsize=16936 CPUtime=0.29
/proc/22016/stat : 22016 (precosat) R 22014 22016 21896 0 -1 4194304 4357 0 0 0 28 1 0 0 19 0 1 0 146637714 17342464 4114 1992294400 134512640 135151029 4294956240 18446744073709551615 134682502 0 0 4096 17442 0 0 0 17 1 0 0
/proc/22016/statm: 4234 4114 79 155 0 4077 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 16936

[startup+0.701134 s]
/proc/loadavg: 1.00 1.00 0.96 2/64 22016
/proc/meminfo: memFree=738608/2055920 swapFree=4181256/4192956
[pid=22016] ppid=22014 vsize=19024 CPUtime=0.69
/proc/22016/stat : 22016 (precosat) R 22014 22016 21896 0 -1 4194304 5437 0 0 0 67 2 0 0 22 0 1 0 146637714 19480576 4646 1992294400 134512640 135151029 4294956240 18446744073709551615 134572573 0 0 4096 17442 0 0 0 17 1 0 0
/proc/22016/statm: 4756 4646 79 155 0 4599 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 19024

[startup+1.50121 s]
/proc/loadavg: 1.00 1.00 0.96 2/65 22017
/proc/meminfo: memFree=715752/2055920 swapFree=4181256/4192956
[pid=22016] ppid=22014 vsize=27208 CPUtime=1.49
/proc/22016/stat : 22016 (precosat) R 22014 22016 21896 0 -1 4194304 8270 0 0 0 146 3 0 0 25 0 1 0 146637714 27860992 6627 1992294400 134512640 135151029 4294956240 18446744073709551615 134688850 0 0 4096 17442 0 0 0 17 1 0 0
/proc/22016/statm: 6802 6627 79 155 0 6645 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 27208

[startup+3.10136 s]
/proc/loadavg: 1.00 1.00 0.96 2/65 22017
/proc/meminfo: memFree=710568/2055920 swapFree=4181256/4192956
[pid=22016] ppid=22014 vsize=31240 CPUtime=3.09
/proc/22016/stat : 22016 (precosat) R 22014 22016 21896 0 -1 4194304 9192 0 0 0 305 4 0 0 25 0 1 0 146637714 31989760 7549 1992294400 134512640 135151029 4294956240 18446744073709551615 134564509 0 0 4096 17442 0 0 0 17 1 0 0
/proc/22016/statm: 7810 7549 79 155 0 7653 0
Current children cumulated CPU time (s) 3.09
Current children cumulated vsize (KiB) 31240

[startup+6.30165 s]
/proc/loadavg: 1.00 1.00 0.96 2/65 22017
/proc/meminfo: memFree=704296/2055920 swapFree=4181256/4192956
[pid=22016] ppid=22014 vsize=39836 CPUtime=6.29
/proc/22016/stat : 22016 (precosat) R 22014 22016 21896 0 -1 4194304 11033 0 0 0 624 5 0 0 25 0 1 0 146637714 40792064 9390 1992294400 134512640 135151029 4294956240 18446744073709551615 134575458 0 0 4096 17442 0 0 0 17 1 0 0
/proc/22016/statm: 9959 9390 79 155 0 9802 0
Current children cumulated CPU time (s) 6.29
Current children cumulated vsize (KiB) 39836

[startup+12.7012 s]
/proc/loadavg: 1.00 1.00 0.96 2/65 22017
/proc/meminfo: memFree=694120/2055920 swapFree=4181256/4192956
[pid=22016] ppid=22014 vsize=46116 CPUtime=12.69
/proc/22016/stat : 22016 (precosat) R 22014 22016 21896 0 -1 4194304 12802 0 0 0 1263 6 0 0 25 0 1 0 146637714 47222784 11159 1992294400 134512640 135151029 4294956240 18446744073709551615 134547998 0 0 4096 17442 0 0 0 17 1 0 0
/proc/22016/statm: 11529 11159 79 155 0 11372 0
Current children cumulated CPU time (s) 12.69
Current children cumulated vsize (KiB) 46116

[startup+25.5014 s]
/proc/loadavg: 1.00 1.00 0.96 2/65 22017
/proc/meminfo: memFree=693096/2055920 swapFree=4181256/4192956
[pid=22016] ppid=22014 vsize=46704 CPUtime=25.48
/proc/22016/stat : 22016 (precosat) R 22014 22016 21896 0 -1 4194304 14302 0 0 0 2541 7 0 0 25 0 1 0 146637714 47824896 11512 1992294400 134512640 135151029 4294956240 18446744073709551615 134554814 0 0 4096 17442 0 0 0 17 1 0 0
/proc/22016/statm: 11676 11512 79 155 0 11519 0
Current children cumulated CPU time (s) 25.48
Current children cumulated vsize (KiB) 46704

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

[startup+25.9015 s]
/proc/loadavg: 1.00 1.00 0.96 2/65 22017
/proc/meminfo: memFree=693096/2055920 swapFree=4181256/4192956
[pid=22016] ppid=22014 vsize=47364 CPUtime=25.88
/proc/22016/stat : 22016 (precosat) R 22014 22016 21896 0 -1 4194304 14447 0 0 0 2581 7 0 0 25 0 1 0 146637714 48500736 11657 1992294400 134512640 135151029 4294956240 18446744073709551615 134574641 0 0 4096 17442 0 0 0 17 1 0 0
/proc/22016/statm: 11841 11657 79 155 0 11684 0
Current children cumulated CPU time (s) 25.88
Current children cumulated vsize (KiB) 47364

[startup+26.0015 s]
/proc/loadavg: 1.00 1.00 0.96 2/65 22017
/proc/meminfo: memFree=693096/2055920 swapFree=4181256/4192956
[pid=22016] ppid=22014 vsize=47364 CPUtime=25.98
/proc/22016/stat : 22016 (precosat) R 22014 22016 21896 0 -1 4194304 14458 0 0 0 2591 7 0 0 25 0 1 0 146637714 48500736 11668 1992294400 134512640 135151029 4294956240 18446744073709551615 134574578 0 0 4096 17442 0 0 0 17 1 0 0
/proc/22016/statm: 11841 11668 79 155 0 11684 0
Current children cumulated CPU time (s) 25.98
Current children cumulated vsize (KiB) 47364

Child status: 20
Real time (s): 26.042
CPU time (s): 26.034
CPU user time (s): 25.9461
CPU system time (s): 0.087986
CPU usage (%): 99.9696
Max. virtual memory (cumulated for all children) (KiB): 47364

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 25.9461
system time used= 0.087986
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 14462
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= 49

runsolver used 0.030995 second user time and 0.06499 second system time

The end

Launcher Data 

Begin job on node14 at 2009-05-01 15:54:02
IDJOB=1773691
IDBENCH=70776
IDSOLVER=607
FILE ID=node14/1773691-1241186042
PBS_JOBID= 9224598
Free space on /tmp= 66544 MiB

SOLVER NAME= precosat 236
BENCH NAME= SAT09/APPLICATIONS/bitverif/minand/minand128.cnf
COMMAND LINE= HOME/precosat BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1773691-1241186042/watcher-1773691-1241186042 -o /tmp/evaluation-result-1773691-1241186042/solver-1773691-1241186042 -C 10000 -W 12000 -M 1800  HOME/precosat HOME/instance-1773691-1241186042.cnf

TIME LIMIT= 10000 seconds
MEMORY LIMIT= 1800 MiB
MAX NB THREAD= 0

MD5SUM BENCH= 34e3afebec3eaf03cbcceb51b352993a
RANDOM SEED=1744018301

node14.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		: 3000.256
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	: 5931.00
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		: 3000.256
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:        739024 kB
Buffers:         93712 kB
Cached:        1104016 kB
SwapCached:       5600 kB
Active:         244392 kB
Inactive:       961332 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:        739024 kB
SwapTotal:     4192956 kB
SwapFree:      4181256 kB
Dirty:            3324 kB
Writeback:           0 kB
Mapped:          13616 kB
Slab:            97076 kB
Committed_AS:   614940 kB
PageTables:       1452 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= 66544 MiB
End job on node14 at 2009-05-01 15:54:28