Trace number 310863

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 236.447 236.533

General information on the benchmark

Namerandom/2+p/p0.8/v1295/
unif2p-p0.8-v1295-c4027-S846304296-04-UNSAT.cnf
MD5SUM6c6574c6e53b7d1ef3d1cc6ac9e5dec3
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark9.15561
Satisfiable
(Un)Satisfiability was proved
Number of variables1295
Number of clauses4026
Sum of the clauses size11273
Maximum clause length3
Minimum clause length2
Number of clauses of size 10
Number of clauses of size 2805
Number of clauses of size 33221
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data (download as text)

236.36/236.53	s UNSATISFIABLE

Verifier Data (download as text)

No possible verification on an UNSAT instance

Watcher Data (download as text)

runsolver version 3.2.0 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node60/watcher-310863-1172562394 -o ROOT/results/node60/solver-310863-1172562394 -C 1200 -M 1800 --output-limit 1,15 /tmp/evaluation/310863-1172562394/picosat /tmp/evaluation/310863-1172562394/instance-310863-1172562394.cnf 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1230 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 2545
/proc/meminfo: memFree=1873352/2055920 swapFree=4179680/4192956
[pid=2545] ppid=2543 vsize=724 CPUtime=0
/proc/2545/stat : 2545 (picosat) R 2543 2545 1090 0 -1 4194304 98 0 0 0 0 0 0 0 18 0 1 0 276196261 741376 83 18446744073709551615 134512640 134931368 4294956704 18446744073709551615 134605937 0 0 4096 0 0 0 0 17 1 0 0
/proc/2545/statm: 181 83 40 102 0 76 0

[startup+0.106929 s]
/proc/loadavg: 0.92 0.98 0.99 3/64 2545
/proc/meminfo: memFree=1873352/2055920 swapFree=4179680/4192956
[pid=2545] ppid=2543 vsize=864 CPUtime=0.1
/proc/2545/stat : 2545 (picosat) R 2543 2545 1090 0 -1 4194304 167 0 0 0 8 2 0 0 18 0 1 0 276196261 884736 150 18446744073709551615 134512640 134931368 4294956704 18446744073709551615 134524227 0 0 4096 0 0 0 0 17 1 0 0
/proc/2545/statm: 216 150 48 102 0 111 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 864

[startup+0.514999 s]
/proc/loadavg: 0.92 0.98 0.99 3/64 2545
/proc/meminfo: memFree=1873352/2055920 swapFree=4179680/4192956
[pid=2545] ppid=2543 vsize=992 CPUtime=0.51
/proc/2545/stat : 2545 (picosat) R 2543 2545 1090 0 -1 4194304 176 0 0 0 49 2 0 0 21 0 1 0 276196261 1015808 159 18446744073709551615 134512640 134931368 4294956704 18446744073709551615 134525703 0 0 4096 0 0 0 0 17 1 0 0
/proc/2545/statm: 248 159 48 102 0 143 0
Current children cumulated CPU time (s) 0.51
Current children cumulated vsize (KiB) 992

[startup+1.33514 s]
/proc/loadavg: 0.92 0.98 0.99 2/65 2546
/proc/meminfo: memFree=1872896/2055920 swapFree=4179680/4192956
[pid=2545] ppid=2543 vsize=992 CPUtime=1.33
/proc/2545/stat : 2545 (picosat) R 2543 2545 1090 0 -1 4194304 182 0 0 0 131 2 0 0 25 0 1 0 276196261 1015808 165 18446744073709551615 134512640 134931368 4294956704 18446744073709551615 134522765 0 0 4096 0 0 0 0 17 1 0 0
/proc/2545/statm: 248 165 48 102 0 143 0
Current children cumulated CPU time (s) 1.33
Current children cumulated vsize (KiB) 992

[startup+2.97144 s]
/proc/loadavg: 0.92 0.98 0.99 2/65 2546
/proc/meminfo: memFree=1872704/2055920 swapFree=4179680/4192956
[pid=2545] ppid=2543 vsize=992 CPUtime=2.96
/proc/2545/stat : 2545 (picosat) R 2543 2545 1090 0 -1 4194304 198 0 0 0 294 2 0 0 25 0 1 0 276196261 1015808 181 18446744073709551615 134512640 134931368 4294956704 18446744073709551615 134530217 0 0 4096 0 0 0 0 17 1 0 0
/proc/2545/statm: 248 181 48 102 0 143 0
Current children cumulated CPU time (s) 2.96
Current children cumulated vsize (KiB) 992

[startup+6.25002 s]
/proc/loadavg: 0.93 0.98 0.99 2/65 2546
/proc/meminfo: memFree=1872512/2055920 swapFree=4179680/4192956
[pid=2545] ppid=2543 vsize=1116 CPUtime=6.24
/proc/2545/stat : 2545 (picosat) R 2543 2545 1090 0 -1 4194304 221 0 0 0 622 2 0 0 25 0 1 0 276196261 1142784 204 18446744073709551615 134512640 134931368 4294956704 18446744073709551615 134529449 0 0 4096 0 0 0 0 17 1 0 0
/proc/2545/statm: 279 204 48 102 0 174 0
Current children cumulated CPU time (s) 6.24
Current children cumulated vsize (KiB) 1116

[startup+12.7022 s]
/proc/loadavg: 0.93 0.98 0.99 2/65 2546
/proc/meminfo: memFree=1872400/2055920 swapFree=4179680/4192956
[pid=2545] ppid=2543 vsize=1228 CPUtime=12.69
/proc/2545/stat : 2545 (picosat) R 2543 2545 1090 0 -1 4194304 248 0 0 0 1267 2 0 0 25 0 1 0 276196261 1257472 231 18446744073709551615 134512640 134931368 4294956704 18446744073709551615 134529356 0 0 4096 0 0 0 0 17 1 0 0
/proc/2545/statm: 307 231 48 102 0 202 0
Current children cumulated CPU time (s) 12.69
Current children cumulated vsize (KiB) 1228

[startup+25.5035 s]
/proc/loadavg: 0.95 0.98 0.99 3/65 2546
/proc/meminfo: memFree=1872144/2055920 swapFree=4179680/4192956
[pid=2545] ppid=2543 vsize=1464 CPUtime=25.48
/proc/2545/stat : 2545 (picosat) R 2543 2545 1090 0 -1 4194304 301 0 0 0 2546 2 0 0 25 0 1 0 276196261 1499136 284 18446744073709551615 134512640 134931368 4294956704 18446744073709551615 134525807 0 0 4096 0 0 0 0 17 1 0 0
/proc/2545/statm: 366 284 48 102 0 261 0
Current children cumulated CPU time (s) 25.48
Current children cumulated vsize (KiB) 1464

[startup+51.1851 s]
/proc/loadavg: 0.96 0.98 0.99 2/65 2546
/proc/meminfo: memFree=1871952/2055920 swapFree=4179680/4192956
[pid=2545] ppid=2543 vsize=1692 CPUtime=51.15
/proc/2545/stat : 2545 (picosat) R 2543 2545 1090 0 -1 4194304 356 0 0 0 5113 2 0 0 25 0 1 0 276196261 1732608 339 18446744073709551615 134512640 134931368 4294956704 18446744073709551615 134525825 0 0 4096 0 0 0 0 17 1 0 0
/proc/2545/statm: 423 339 48 102 0 318 0
Current children cumulated CPU time (s) 51.15
Current children cumulated vsize (KiB) 1692

[startup+102.393 s]
/proc/loadavg: 0.98 0.98 0.99 2/65 2546
/proc/meminfo: memFree=1871568/2055920 swapFree=4179680/4192956
[pid=2545] ppid=2543 vsize=1968 CPUtime=102.34
/proc/2545/stat : 2545 (picosat) R 2543 2545 1090 0 -1 4194304 433 0 0 0 10232 2 0 0 25 0 1 0 276196261 2015232 416 18446744073709551615 134512640 134931368 4294956704 18446744073709551615 134525807 0 0 4096 0 0 0 0 17 1 0 0
/proc/2545/statm: 492 416 48 102 0 387 0
Current children cumulated CPU time (s) 102.34
Current children cumulated vsize (KiB) 1968

[startup+162.416 s]
/proc/loadavg: 0.99 0.98 0.99 2/65 2546
/proc/meminfo: memFree=1871312/2055920 swapFree=4179680/4192956
[pid=2545] ppid=2543 vsize=2216 CPUtime=162.34
/proc/2545/stat : 2545 (picosat) R 2543 2545 1090 0 -1 4194304 501 0 0 0 16232 2 0 0 25 0 1 0 276196261 2269184 480 18446744073709551615 134512640 134931368 4294956704 18446744073709551615 134525754 0 0 4096 0 0 0 0 17 1 0 0
/proc/2545/statm: 554 480 48 102 0 449 0
Current children cumulated CPU time (s) 162.34
Current children cumulated vsize (KiB) 2216

[startup+222.431 s]
/proc/loadavg: 0.99 0.98 0.99 2/65 2546
/proc/meminfo: memFree=1871056/2055920 swapFree=4179680/4192956
[pid=2545] ppid=2543 vsize=2520 CPUtime=222.34
/proc/2545/stat : 2545 (picosat) R 2543 2545 1090 0 -1 4194304 554 0 0 0 22232 2 0 0 25 0 1 0 276196261 2580480 533 18446744073709551615 134512640 134931368 4294956704 18446744073709551615 134525754 0 0 4096 0 0 0 0 17 1 0 0
/proc/2545/statm: 630 533 48 102 0 525 0
Current children cumulated CPU time (s) 222.34
Current children cumulated vsize (KiB) 2520

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

[startup+222.943 s]
/proc/loadavg: 0.99 0.98 0.99 2/65 2546
/proc/meminfo: memFree=1871056/2055920 swapFree=4179680/4192956
[pid=2545] ppid=2543 vsize=2508 CPUtime=222.85
/proc/2545/stat : 2545 (picosat) R 2543 2545 1090 0 -1 4194304 554 0 0 0 22283 2 0 0 25 0 1 0 276196261 2568192 533 18446744073709551615 134512640 134931368 4294956704 18446744073709551615 134522740 0 0 4096 0 0 0 0 17 1 0 0
/proc/2545/statm: 627 533 48 102 0 522 0
Current children cumulated CPU time (s) 222.85
Current children cumulated vsize (KiB) 2508

[startup+229.497 s]
/proc/loadavg: 0.99 0.98 0.99 2/65 2546
/proc/meminfo: memFree=1871056/2055920 swapFree=4179680/4192956
[pid=2545] ppid=2543 vsize=2488 CPUtime=229.4
/proc/2545/stat : 2545 (picosat) R 2543 2545 1090 0 -1 4194304 554 0 0 0 22938 2 0 0 25 0 1 0 276196261 2547712 533 18446744073709551615 134512640 134931368 4294956704 18446744073709551615 134525778 0 0 4096 0 0 0 0 17 1 0 0
/proc/2545/statm: 622 533 48 102 0 517 0
Current children cumulated CPU time (s) 229.4
Current children cumulated vsize (KiB) 2488

[startup+232.776 s]
/proc/loadavg: 0.99 0.98 0.99 2/65 2546
/proc/meminfo: memFree=1871056/2055920 swapFree=4179680/4192956
[pid=2545] ppid=2543 vsize=2488 CPUtime=232.68
/proc/2545/stat : 2545 (picosat) R 2543 2545 1090 0 -1 4194304 554 0 0 0 23266 2 0 0 25 0 1 0 276196261 2547712 533 18446744073709551615 134512640 134931368 4294956704 18446744073709551615 134525823 0 0 4096 0 0 0 0 17 1 0 0
/proc/2545/statm: 622 533 48 102 0 517 0
Current children cumulated CPU time (s) 232.68
Current children cumulated vsize (KiB) 2488

[startup+234.412 s]
/proc/loadavg: 0.99 0.98 0.99 2/65 2546
/proc/meminfo: memFree=1871056/2055920 swapFree=4179680/4192956
[pid=2545] ppid=2543 vsize=2488 CPUtime=234.32
/proc/2545/stat : 2545 (picosat) R 2543 2545 1090 0 -1 4194304 554 0 0 0 23430 2 0 0 25 0 1 0 276196261 2547712 533 18446744073709551615 134512640 134931368 4294956704 18446744073709551615 134522836 0 0 4096 0 0 0 0 17 1 0 0
/proc/2545/statm: 622 533 48 102 0 517 0
Current children cumulated CPU time (s) 234.32
Current children cumulated vsize (KiB) 2488

[startup+235.232 s]
/proc/loadavg: 0.99 0.98 0.99 2/65 2546
/proc/meminfo: memFree=1871056/2055920 swapFree=4179680/4192956
[pid=2545] ppid=2543 vsize=2488 CPUtime=235.13
/proc/2545/stat : 2545 (picosat) R 2543 2545 1090 0 -1 4194304 554 0 0 0 23511 2 0 0 25 0 1 0 276196261 2547712 533 18446744073709551615 134512640 134931368 4294956704 18446744073709551615 134525754 0 0 4096 0 0 0 0 17 1 0 0
/proc/2545/statm: 622 533 48 102 0 517 0
Current children cumulated CPU time (s) 235.13
Current children cumulated vsize (KiB) 2488

[startup+236.052 s]
/proc/loadavg: 0.99 0.98 0.99 2/65 2546
/proc/meminfo: memFree=1871056/2055920 swapFree=4179680/4192956
[pid=2545] ppid=2543 vsize=2488 CPUtime=235.95
/proc/2545/stat : 2545 (picosat) R 2543 2545 1090 0 -1 4194304 554 0 0 0 23593 2 0 0 25 0 1 0 276196261 2547712 533 18446744073709551615 134512640 134931368 4294956704 18446744073709551615 134525807 0 0 4096 0 0 0 0 17 1 0 0
/proc/2545/statm: 622 533 48 102 0 517 0
Current children cumulated CPU time (s) 235.95
Current children cumulated vsize (KiB) 2488

[startup+236.46 s]
/proc/loadavg: 0.99 0.98 0.99 2/65 2546
/proc/meminfo: memFree=1871056/2055920 swapFree=4179680/4192956
[pid=2545] ppid=2543 vsize=2488 CPUtime=236.36
/proc/2545/stat : 2545 (picosat) R 2543 2545 1090 0 -1 4194304 554 0 0 0 23634 2 0 0 25 0 1 0 276196261 2547712 533 18446744073709551615 134512640 134931368 4294956704 18446744073709551615 134529080 0 0 4096 0 0 0 0 17 1 0 0
/proc/2545/statm: 622 533 48 102 0 517 0
Current children cumulated CPU time (s) 236.36
Current children cumulated vsize (KiB) 2488

Child status: 20
Real time (s): 236.533
CPU time (s): 236.447
CPU user time (s): 236.416
CPU system time (s): 0.030995
CPU usage (%): 99.9637
Max. virtual memory (cumulated for all children) (KiB): 2520

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 236.416
system time used= 0.030995
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 556
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= 8
involuntary context switches= 279

runsolver used 0.180972 second user time and 0.451931 second system time

The end

Launcher Data (download as text)

Begin job on node60 on Tue Feb 27 07:46:34 UTC 2007

IDJOB= 310863
IDBENCH= 20298
IDSOLVER= 106
FILE ID= node60/310863-1172562394

PBS_JOBID= 3971858

Free space on /tmp= 66555 MiB

SOLVER NAME= picosat 535
BENCH NAME= HOME/pub/bench/SAT07/random/2+p/p0.8/v1295/unif2p-p0.8-v1295-c4027-S846304296-04-UNSAT.cnf
COMMAND LINE= /tmp/evaluation/310863-1172562394/picosat /tmp/evaluation/310863-1172562394/instance-310863-1172562394.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node60/watcher-310863-1172562394 -o ROOT/results/node60/solver-310863-1172562394 -C 1200 -M 1800 --output-limit 1,15  /tmp/evaluation/310863-1172562394/picosat /tmp/evaluation/310863-1172562394/instance-310863-1172562394.cnf            

META MD5SUM SOLVER= 1cb12d44dc66ecc4d20a168f5cfd1323
MD5SUM BENCH=  6c6574c6e53b7d1ef3d1cc6ac9e5dec3

RANDOM SEED= 595582435

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node60.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		: 3000.283
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		: 3000.283
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:       1873824 kB
Buffers:         19008 kB
Cached:         111656 kB
SwapCached:       7512 kB
Active:          61172 kB
Inactive:        83612 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1873824 kB
SwapTotal:     4192956 kB
SwapFree:      4179680 kB
Dirty:             548 kB
Writeback:           0 kB
Mapped:          15816 kB
Slab:            23380 kB
Committed_AS:   798788 kB
PageTables:       1464 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= 66555 MiB

End job on node60 on Tue Feb 27 07:50:31 UTC 2007