Trace number 316102

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, and are wall clock time (not CPU 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
picosat 535UNSAT 18.1342 18.1416

General information on the benchmark

Namecrafted/spence/
medium/s61-100.cnf
MD5SUM8e686ecbc85309de84d77c0df9eeaa58
Bench CategoryCRAFTED (crafted instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark1.65375
Satisfiable
(Un)Satisfiability was proved
Number of variables61
Number of clauses132
Sum of the clauses size396
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 3132
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data (download as text)

18.09/18.14	s UNSATISFIABLE

Verifier Data (download as text)

No possible verification on an UNSAT instance

Watcher Data (download as text)

runsolver version 3.2.1 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node13/watcher-316102-1172664221 -o ROOT/results/node13/solver-316102-1172664221 -C 1200 -W 2400 -M 1800 --output-limit 1,15 /tmp/evaluation/316102-1172664221/picosat /tmp/evaluation/316102-1172664221/instance-316102-1172664221.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): 2400 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 3/77 6577
/proc/meminfo: memFree=1720824/2055920 swapFree=4192812/4192956
[pid=6577] ppid=6575 vsize=568 CPUtime=0
/proc/6577/stat : 6577 (picosat) R 6575 6577 4832 0 -1 4194304 72 0 0 0 0 0 0 0 19 0 1 0 286376613 581632 57 18446744073709551615 134512640 134931368 4294956624 18446744073709551615 134529490 0 0 4096 0 0 0 0 17 1 0 0
/proc/6577/statm: 142 57 42 102 0 37 0

[startup+0.0712119 s]
/proc/loadavg: 0.92 0.98 0.99 3/77 6577
/proc/meminfo: memFree=1720824/2055920 swapFree=4192812/4192956
[pid=6577] ppid=6575 vsize=704 CPUtime=0.07
/proc/6577/stat : 6577 (picosat) R 6575 6577 4832 0 -1 4194304 107 0 0 0 7 0 0 0 19 0 1 0 286376613 720896 90 18446744073709551615 134512640 134931368 4294956624 18446744073709551615 134524068 0 0 4096 0 0 0 0 17 1 0 0
/proc/6577/statm: 176 90 48 102 0 71 0
Current children cumulated CPU time (s) 0.07
Current children cumulated vsize (KiB) 704

[startup+0.101215 s]
/proc/loadavg: 0.92 0.98 0.99 3/77 6577
/proc/meminfo: memFree=1720824/2055920 swapFree=4192812/4192956
[pid=6577] ppid=6575 vsize=704 CPUtime=0.1
/proc/6577/stat : 6577 (picosat) R 6575 6577 4832 0 -1 4194304 107 0 0 0 10 0 0 0 20 0 1 0 286376613 720896 90 18446744073709551615 134512640 134931368 4294956624 18446744073709551615 134525760 0 0 4096 0 0 0 0 17 1 0 0
/proc/6577/statm: 176 90 48 102 0 71 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 704

[startup+0.301241 s]
/proc/loadavg: 0.92 0.98 0.99 3/77 6577
/proc/meminfo: memFree=1720824/2055920 swapFree=4192812/4192956
[pid=6577] ppid=6575 vsize=704 CPUtime=0.3
/proc/6577/stat : 6577 (picosat) R 6575 6577 4832 0 -1 4194304 114 0 0 0 30 0 0 0 21 0 1 0 286376613 720896 97 18446744073709551615 134512640 134931368 4294956624 18446744073709551615 134520166 0 0 4096 0 0 0 0 17 1 0 0
/proc/6577/statm: 176 97 48 102 0 71 0
Current children cumulated CPU time (s) 0.3
Current children cumulated vsize (KiB) 704

[startup+0.701294 s]
/proc/loadavg: 0.92 0.98 0.99 3/77 6577
/proc/meminfo: memFree=1720824/2055920 swapFree=4192812/4192956
[pid=6577] ppid=6575 vsize=704 CPUtime=0.7
/proc/6577/stat : 6577 (picosat) R 6575 6577 4832 0 -1 4194304 125 0 0 0 70 0 0 0 25 0 1 0 286376613 720896 108 18446744073709551615 134512640 134931368 4294956624 18446744073709551615 134531816 0 0 4096 0 0 0 0 17 1 0 0
/proc/6577/statm: 176 108 48 102 0 71 0
Current children cumulated CPU time (s) 0.7
Current children cumulated vsize (KiB) 704

[startup+1.5014 s]
/proc/loadavg: 0.92 0.98 0.99 2/78 6578
/proc/meminfo: memFree=1720496/2055920 swapFree=4192812/4192956
[pid=6577] ppid=6575 vsize=820 CPUtime=1.5
/proc/6577/stat : 6577 (picosat) R 6575 6577 4832 0 -1 4194304 139 0 0 0 150 0 0 0 25 0 1 0 286376613 839680 122 18446744073709551615 134512640 134931368 4294956624 18446744073709551615 134530198 0 0 4096 0 0 0 0 17 1 0 0
/proc/6577/statm: 205 122 48 102 0 100 0
Current children cumulated CPU time (s) 1.5
Current children cumulated vsize (KiB) 820

[startup+3.10161 s]
/proc/loadavg: 0.92 0.98 0.99 2/78 6578
/proc/meminfo: memFree=1720304/2055920 swapFree=4192812/4192956
[pid=6577] ppid=6575 vsize=820 CPUtime=3.09
/proc/6577/stat : 6577 (picosat) R 6575 6577 4832 0 -1 4194304 154 0 0 0 309 0 0 0 25 0 1 0 286376613 839680 137 18446744073709551615 134512640 134931368 4294956624 18446744073709551615 134549250 0 0 4096 0 0 0 0 17 1 0 0
/proc/6577/statm: 205 137 48 102 0 100 0
Current children cumulated CPU time (s) 3.09
Current children cumulated vsize (KiB) 820

[startup+6.30104 s]
/proc/loadavg: 0.93 0.98 0.99 2/78 6578
/proc/meminfo: memFree=1720176/2055920 swapFree=4192812/4192956
[pid=6577] ppid=6575 vsize=944 CPUtime=6.29
/proc/6577/stat : 6577 (picosat) R 6575 6577 4832 0 -1 4194304 180 0 0 0 629 0 0 0 25 0 1 0 286376613 966656 163 18446744073709551615 134512640 134931368 4294956624 18446744073709551615 134525791 0 0 4096 0 0 0 0 17 1 0 0
/proc/6577/statm: 236 163 48 102 0 131 0
Current children cumulated CPU time (s) 6.29
Current children cumulated vsize (KiB) 944

[startup+12.7019 s]
/proc/loadavg: 0.93 0.98 0.99 2/78 6578
/proc/meminfo: memFree=1720056/2055920 swapFree=4192812/4192956
[pid=6577] ppid=6575 vsize=1044 CPUtime=12.69
/proc/6577/stat : 6577 (picosat) R 6575 6577 4832 0 -1 4194304 207 0 0 0 1269 0 0 0 25 0 1 0 286376613 1069056 190 18446744073709551615 134512640 134931368 4294956624 18446744073709551615 134525754 0 0 4096 0 0 0 0 17 1 0 0
/proc/6577/statm: 261 190 48 102 0 156 0
Current children cumulated CPU time (s) 12.69
Current children cumulated vsize (KiB) 1044

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

[startup+15.9013 s]
/proc/loadavg: 0.94 0.98 0.99 2/78 6578
/proc/meminfo: memFree=1720056/2055920 swapFree=4192812/4192956
[pid=6577] ppid=6575 vsize=1044 CPUtime=15.89
/proc/6577/stat : 6577 (picosat) R 6575 6577 4832 0 -1 4194304 213 0 0 0 1589 0 0 0 25 0 1 0 286376613 1069056 196 18446744073709551615 134512640 134931368 4294956624 18446744073709551615 134549462 0 0 4096 0 0 0 0 17 1 0 0
/proc/6577/statm: 261 196 48 102 0 156 0
Current children cumulated CPU time (s) 15.89
Current children cumulated vsize (KiB) 1044

[startup+17.5015 s]
/proc/loadavg: 0.94 0.98 0.99 2/78 6578
/proc/meminfo: memFree=1719992/2055920 swapFree=4192812/4192956
[pid=6577] ppid=6575 vsize=1044 CPUtime=17.49
/proc/6577/stat : 6577 (picosat) R 6575 6577 4832 0 -1 4194304 218 0 0 0 1749 0 0 0 25 0 1 0 286376613 1069056 201 18446744073709551615 134512640 134931368 4294956624 18446744073709551615 134525754 0 0 4096 0 0 0 0 17 1 0 0
/proc/6577/statm: 261 201 48 102 0 156 0
Current children cumulated CPU time (s) 17.49
Current children cumulated vsize (KiB) 1044

[startup+17.9016 s]
/proc/loadavg: 0.94 0.98 0.99 2/78 6578
/proc/meminfo: memFree=1719992/2055920 swapFree=4192812/4192956
[pid=6577] ppid=6575 vsize=1044 CPUtime=17.89
/proc/6577/stat : 6577 (picosat) R 6575 6577 4832 0 -1 4194304 218 0 0 0 1789 0 0 0 25 0 1 0 286376613 1069056 201 18446744073709551615 134512640 134931368 4294956624 18446744073709551615 134525754 0 0 4096 0 0 0 0 17 1 0 0
/proc/6577/statm: 261 201 48 102 0 156 0
Current children cumulated CPU time (s) 17.89
Current children cumulated vsize (KiB) 1044

[startup+18.1016 s]
/proc/loadavg: 0.94 0.98 0.99 2/78 6578
/proc/meminfo: memFree=1719992/2055920 swapFree=4192812/4192956
[pid=6577] ppid=6575 vsize=1044 CPUtime=18.09
/proc/6577/stat : 6577 (picosat) R 6575 6577 4832 0 -1 4194304 218 0 0 0 1809 0 0 0 25 0 1 0 286376613 1069056 201 18446744073709551615 134512640 134931368 4294956624 18446744073709551615 134549596 0 0 4096 0 0 0 0 17 1 0 0
/proc/6577/statm: 261 201 48 102 0 156 0
Current children cumulated CPU time (s) 18.09
Current children cumulated vsize (KiB) 1044

Child status: 20
Real time (s): 18.1416
CPU time (s): 18.1342
CPU user time (s): 18.1312
CPU system time (s): 0.002999
CPU usage (%): 99.9596
Max. virtual memory (cumulated for all children) (KiB): 1056

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 18.1312
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= 220
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= 7
involuntary context switches= 20

runsolver used 0.019996 second user time and 0.052991 second system time

The end

Launcher Data (download as text)

Begin job on node13 on Wed Feb 28 12:03:42 UTC 2007

IDJOB= 316102
IDBENCH= 20433
IDSOLVER= 106
FILE ID= node13/316102-1172664221

PBS_JOBID= 3980957

Free space on /tmp= 66371 MiB

SOLVER NAME= picosat 535
BENCH NAME= HOME/pub/bench/SAT07/crafted/spence/medium/s61-100.cnf
COMMAND LINE= /tmp/evaluation/316102-1172664221/picosat /tmp/evaluation/316102-1172664221/instance-316102-1172664221.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node13/watcher-316102-1172664221 -o ROOT/results/node13/solver-316102-1172664221 -C 1200 -W 2400 -M 1800 --output-limit 1,15  /tmp/evaluation/316102-1172664221/picosat /tmp/evaluation/316102-1172664221/instance-316102-1172664221.cnf            

META MD5SUM SOLVER= 1cb12d44dc66ecc4d20a168f5cfd1323
MD5SUM BENCH=  8e686ecbc85309de84d77c0df9eeaa58

RANDOM SEED= 233014737

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node13.alineos.net 2.6.9-22.EL.rootsmp #1 SMP Mon Oct 3 08:59:52 CEST 2005 x86_64 x86_64 x86_64 GNU/Linux

/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		: 3000.236
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		: 3000.236
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:       1721232 kB
Buffers:         13544 kB
Cached:         204464 kB
SwapCached:          0 kB
Active:         108604 kB
Inactive:       177448 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1721232 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:             672 kB
Writeback:           0 kB
Mapped:          87036 kB
Slab:            34148 kB
Committed_AS:  1185484 kB
PageTables:       1780 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= 66371 MiB

End job on node13 on Wed Feb 28 12:04:00 UTC 2007