Trace number 1736998

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 0.481926 0.481409

General information on the benchmark

NameCRAFTED/parity-games/
instance_n4_i5_pp.cnf
MD5SUMc15885aa7570af76db584f0c4936c8d8
Bench CategoryCRAFTED (crafted instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.280956
Satisfiable
(Un)Satisfiability was proved
Number of variables1960
Number of clauses11270
Sum of the clauses size35662
Maximum clause length12
Minimum clause length2
Number of clauses of size 10
Number of clauses of size 22945
Number of clauses of size 34500
Number of clauses of size 42881
Number of clauses of size 5940
Number of clauses of size over 54

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-1736998-1240814223.cnf
0.00/0.00	c found header 'p cnf 1960 11270'
0.00/0.01	c finished parsing
0.00/0.01	c
0.00/0.01	c --check=0 --verbose=0 --order=3 --simprd=40 --merge=1 --hash=1
0.00/0.01	c --dominate=1 --restart=1 --restartint=100 --rebias=1 --rebiasint=1000
0.00/0.01	c --probe=1 --probeint=100000 --probeprd=10 --decompose=1 --minimize=3
0.00/0.01	c --maxdepth=1000 --strength=10 --elim=1 --elimint=300000 --elimprd=20
0.00/0.01	c --subst=1 --ands=1 --xors=1 --ites=1 --minlimit=1000 --maxlimit=10000000
0.00/0.01	c --random=1 --spread=2000 --seed=0 --skip=25
0.00/0.01	c
0.00/0.01	c sizeof     vars[0] = 16   alignment = 0       0 MB
0.00/0.01	c sizeof     orgs[0] =  8   alignment = 0       0 MB
0.00/0.01	c sizeof     occs[0] =  8   alignment = 0       0 MB
0.00/0.01	c sizeof iirfs[0..1] =  8   alignment = 0       0 MB
0.00/0.01	c
0.00/0.01	c starting search after 0.0 seconds
0.00/0.01	c no decision limit
0.00/0.01	c
0.00/0.01	c       original/binary      fixed     eliminated      learned       agility
0.00/0.01	c   seconds        variables     equivalent    conflicts       height       MB
0.00/0.01	c
0.00/0.01	c *    0.0    11215    1548     40   372      0       0      0    0.0   0    1
0.01/0.05	c -    0.0     9584    1278     95   587      0       0   1000    0.0   0    1
0.09/0.10	c s    0.1     7590     861     95   587    417       0      0    0.0   0    1
0.09/0.10	c l    0.1     7590     861     95   587    417       0   5989    0.0   0    1
0.09/0.11	c R    0.1     7601     861     95   587    417     100     99   12.3  12    1
0.09/0.11	c R    0.1     7601     861     95   587    417     200    199   13.4  14    1
0.09/0.16	c R    0.2     7616     861     95   587    417     802    801   13.5  16    1
0.09/0.18	c B    0.2     7616     861     95   587    417    1002   1001   13.3  21    1
0.19/0.26	c s    0.3     7637     861     95   587    417    1924   1918   12.8  18    1
0.19/0.27	c B    0.3     7637     861     95   587    417    2002   1996   12.7  20    1
0.29/0.31	c R    0.3     7650     861     95   587    417    2407   2401   12.3  20    1
0.39/0.48	c 0    0.5     9560     560    396   587    417    4090   4038   10.7  18    1
0.39/0.48	c
0.39/0.48	s UNSATISFIABLE
0.39/0.48	c
0.39/0.48	c 4090 conflicts, 6554 decisions, 1 random
0.39/0.48	c 10 iterations, 20 restarts, 0 skipped
0.39/0.48	c 0 enlarged, 453 shrunken, 39 rescored, 3 rebiased
0.39/0.48	c 2 simplifications, 0 reductions
0.39/0.48	c
0.39/0.48	c vars: 396 fixed, 587 equiv, 417 elim, 620 merged
0.39/0.48	c elim: 47035 resolutions, 1 phases, 1 rounds
0.39/0.48	c sbst: 43% substituted, 0.0% nots, 93.8% ands, 6.2% xors, 0.0% ites
0.39/0.48	c arty: 2.12 and 2.00 xor average arity
0.39/0.48	c prbe: 5487 probed, 1 phases, 2 rounds
0.39/0.48	c prbe: 50 failed, 5 lifted, 5 merged
0.39/0.48	c sccs: 0 non trivial, 0 fixed, 0 merged
0.39/0.48	c hash: 30 units, 615 merged
0.39/0.48	c mins: 50266 learned, 38% deleted, 8 strong, 27 depth
0.39/0.48	c subs: 692 forward, 675 backward, 1666 doms
0.39/0.48	c strs: 894 forward, 177 backward
0.39/0.48	c doms: 1814 dominators, 991 high, 111 low
0.39/0.48	c prps: 718404 propagations, 1.50 megaprops
0.39/0.48	c
0.39/0.48	c 0.5 seconds, 1 MB max, 0 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-1736998-1240814223/watcher-1736998-1240814223 -o /tmp/evaluation-result-1736998-1240814223/solver-1736998-1240814223 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/precosat HOME/instance-1736998-1240814223.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: 0.92 0.98 0.99 3/64 31447
/proc/meminfo: memFree=1598152/2055920 swapFree=4180724/4192956
[pid=31447] ppid=31445 vsize=1068 CPUtime=0
/proc/31447/stat : 31447 (precosat) R 31445 31447 29930 0 -1 4194304 182 0 0 0 0 0 0 0 18 0 1 0 109455761 1093632 167 1992294400 134512640 135151029 4294956224 18446744073709551615 134682502 0 0 4096 17442 0 0 0 17 1 0 0
/proc/31447/statm: 267 167 64 155 0 110 0

[startup+0.0141981 s]
/proc/loadavg: 0.92 0.98 0.99 3/64 31447
/proc/meminfo: memFree=1598152/2055920 swapFree=4180724/4192956
[pid=31447] ppid=31445 vsize=1724 CPUtime=0.01
/proc/31447/stat : 31447 (precosat) R 31445 31447 29930 0 -1 4194304 339 0 0 0 1 0 0 0 18 0 1 0 109455761 1765376 323 1992294400 134512640 135151029 4294956224 18446744073709551615 134680404 0 0 4096 17442 0 0 0 17 1 0 0
/proc/31447/statm: 431 323 79 155 0 274 0
Current children cumulated CPU time (s) 0.01
Current children cumulated vsize (KiB) 1724

[startup+0.102206 s]
/proc/loadavg: 0.92 0.98 0.99 3/64 31447
/proc/meminfo: memFree=1598152/2055920 swapFree=4180724/4192956
[pid=31447] ppid=31445 vsize=1988 CPUtime=0.09
/proc/31447/stat : 31447 (precosat) R 31445 31447 29930 0 -1 4194304 429 0 0 0 9 0 0 0 18 0 1 0 109455761 2035712 413 1992294400 134512640 135151029 4294956224 18446744073709551615 134516115 0 0 4096 17442 0 0 0 17 1 0 0
/proc/31447/statm: 497 413 79 155 0 340 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 1988

[startup+0.30123 s]
/proc/loadavg: 0.92 0.98 0.99 3/64 31447
/proc/meminfo: memFree=1598152/2055920 swapFree=4180724/4192956
[pid=31447] ppid=31445 vsize=1988 CPUtime=0.29
/proc/31447/stat : 31447 (precosat) R 31445 31447 29930 0 -1 4194304 429 0 0 0 29 0 0 0 19 0 1 0 109455761 2035712 413 1992294400 134512640 135151029 4294956224 18446744073709551615 134580527 0 0 4096 17442 0 0 0 17 1 0 0
/proc/31447/statm: 497 413 79 155 0 340 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 1988

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

[startup+0.401241 s]
/proc/loadavg: 0.92 0.98 0.99 3/64 31447
/proc/meminfo: memFree=1598152/2055920 swapFree=4180724/4192956
[pid=31447] ppid=31445 vsize=1988 CPUtime=0.39
/proc/31447/stat : 31447 (precosat) R 31445 31447 29930 0 -1 4194304 429 0 0 0 39 0 0 0 19 0 1 0 109455761 2035712 413 1992294400 134512640 135151029 4294956224 18446744073709551615 134574250 0 0 4096 17442 0 0 0 17 1 0 0
/proc/31447/statm: 497 413 79 155 0 340 0
Current children cumulated CPU time (s) 0.39
Current children cumulated vsize (KiB) 1988

Child status: 20
Real time (s): 0.481409
CPU time (s): 0.481926
CPU user time (s): 0.477927
CPU system time (s): 0.003999
CPU usage (%): 100.107
Max. virtual memory (cumulated for all children) (KiB): 1988

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.477927
system time used= 0.003999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 464
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= 0

runsolver used 0.002999 second user time and 0.005999 second system time

The end

Launcher Data 

Begin job on node23 at 2009-04-27 08:37:03
IDJOB=1736998
IDBENCH=71640
IDSOLVER=507
FILE ID=node23/1736998-1240814223
PBS_JOBID= 9187440
Free space on /tmp= 66320 MiB

SOLVER NAME= precosat 236
BENCH NAME= SAT09/CRAFTED/parity-games/instance_n4_i5_pp.cnf
COMMAND LINE= HOME/precosat BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1736998-1240814223/watcher-1736998-1240814223 -o /tmp/evaluation-result-1736998-1240814223/solver-1736998-1240814223 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/precosat HOME/instance-1736998-1240814223.cnf

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

MD5SUM BENCH= c15885aa7570af76db584f0c4936c8d8
RANDOM SEED=1556146947

node23.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		: 3000.238
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		: 3000.238
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:       1598632 kB
Buffers:         62048 kB
Cached:         336976 kB
SwapCached:       6256 kB
Active:         185912 kB
Inactive:       221748 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1598632 kB
SwapTotal:     4192956 kB
SwapFree:      4180724 kB
Dirty:             904 kB
Writeback:           0 kB
Mapped:          14124 kB
Slab:            35712 kB
Committed_AS:   503968 kB
PageTables:       1388 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= 66320 MiB
End job on node23 at 2009-04-27 08:37:03