Trace number 310947

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
Mmisat 2007-02-08Signal 1.11583 1.11711

General information on the benchmark

Namerandom/2+p/p0.8/v1295/
unif2p-p0.8-v1295-c4027-S1230630010-06-UNSAT.cnf
MD5SUMf1d2cd08ac7f8096a38662a7d7275db8
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark17.0164
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)



Verifier Data (download as text)




ERROR: Unexpected answer ! (SATISFIABLE/UNSATISFIABLE expected)
Got answer: 



Watcher Data (download as text)




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

command line: runsolver --timestamp -w ROOT/results/node10/watcher-310947-1172563198 -o ROOT/results/node10/solver-310947-1172563198 -C 1200 -M 1800 --output-limit 1,15 /tmp/evaluation/310947-1172563198/mmisat /tmp/evaluation/310947-1172563198/instance-310947-1172563198.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: 1.00 1.00 1.00 3/77 26954
/proc/meminfo: memFree=1591208/2055920 swapFree=4192812/4192956
[pid=26954] ppid=26952 vsize=1308 CPUtime=0
/proc/26954/stat : 26954 (mmisat) R 26952 26954 25902 0 -1 4194304 194 0 0 0 0 0 0 0 18 0 1 0 276274767 1339392 177 18446744073709551615 134512640 135391789 4294956704 18446744073709551615 134998823 0 0 4096 0 0 0 0 17 1 0 0
/proc/26954/statm: 327 177 81 214 0 109 0

[startup+0.106765 s]
/proc/loadavg: 1.00 1.00 1.00 3/77 26954
/proc/meminfo: memFree=1591208/2055920 swapFree=4192812/4192956
[pid=26954] ppid=26952 vsize=2496 CPUtime=0.1
/proc/26954/stat : 26954 (mmisat) R 26952 26954 25902 0 -1 4194304 491 0 0 0 10 0 0 0 18 0 1 0 276274767 2555904 474 18446744073709551615 134512640 135391789 4294956704 18446744073709551615 134998823 0 0 4096 0 0 0 0 17 1 0 0
/proc/26954/statm: 624 474 81 214 0 406 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 2496

[startup+0.514819 s]
/proc/loadavg: 1.00 1.00 1.00 3/77 26954
/proc/meminfo: memFree=1591208/2055920 swapFree=4192812/4192956
[pid=26954] ppid=26952 vsize=4344 CPUtime=0.51
/proc/26954/stat : 26954 (mmisat) R 26952 26954 25902 0 -1 4194304 933 0 0 0 51 0 0 0 21 0 1 0 276274767 4448256 916 18446744073709551615 134512640 135391789 4294956704 18446744073709551615 134517738 0 0 4096 0 0 0 0 17 1 0 0
/proc/26954/statm: 1086 916 81 214 0 868 0
Current children cumulated CPU time (s) 0.51
Current children cumulated vsize (KiB) 4344

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

[startup+0.820861 s]
/proc/loadavg: 1.00 1.00 1.00 3/77 26954
/proc/meminfo: memFree=1591208/2055920 swapFree=4192812/4192956
[pid=26954] ppid=26952 vsize=5136 CPUtime=0.81
/proc/26954/stat : 26954 (mmisat) R 26952 26954 25902 0 -1 4194304 1150 0 0 0 81 0 0 0 24 0 1 0 276274767 5259264 1133 18446744073709551615 134512640 135391789 4294956704 18446744073709551615 134998823 0 0 4096 0 0 0 0 17 1 0 0
/proc/26954/statm: 1284 1133 81 214 0 1066 0
Current children cumulated CPU time (s) 0.81
Current children cumulated vsize (KiB) 5136

[startup+1.02489 s]
/proc/loadavg: 1.00 1.00 1.00 3/77 26954
/proc/meminfo: memFree=1591208/2055920 swapFree=4192812/4192956
[pid=26954] ppid=26952 vsize=13496 CPUtime=1.01
/proc/26954/stat : 26954 (mmisat) R 26952 26954 25902 0 -1 4194304 3241 0 0 0 101 0 0 0 25 0 1 0 276274767 13819904 3224 18446744073709551615 134512640 135391789 4294956704 18446744073709551615 134518788 0 0 4096 0 0 0 0 17 1 0 0
/proc/26954/statm: 3374 3224 85 214 0 3156 0
Current children cumulated CPU time (s) 1.01
Current children cumulated vsize (KiB) 13496

Child ended because it received signal 11 (SIGSEGV)
Real time (s): 1.11711
CPU time (s): 1.11583
CPU user time (s): 1.05584
CPU system time (s): 0.05999
CPU usage (%): 99.8852
Max. virtual memory (cumulated for all children) (KiB): 13496

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 1.05584
system time used= 0.05999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 3261
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= 6
involuntary context switches= 3

runsolver used 0.001999 second user time and 0.009998 second system time

The end



Launcher Data (download as text)




Begin job on node10 on Tue Feb 27 07:59:58 UTC 2007

IDJOB= 310947
IDBENCH= 20300
IDSOLVER= 108
FILE ID= node10/310947-1172563198

PBS_JOBID= 3971657

Free space on /tmp= 66560 MiB

SOLVER NAME= Mmisat 2007-02-08
BENCH NAME= HOME/pub/bench/SAT07/random/2+p/p0.8/v1295/unif2p-p0.8-v1295-c4027-S1230630010-06-UNSAT.cnf
COMMAND LINE= /tmp/evaluation/310947-1172563198/mmisat /tmp/evaluation/310947-1172563198/instance-310947-1172563198.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node10/watcher-310947-1172563198 -o ROOT/results/node10/solver-310947-1172563198 -C 1200 -M 1800 --output-limit 1,15  /tmp/evaluation/310947-1172563198/mmisat /tmp/evaluation/310947-1172563198/instance-310947-1172563198.cnf            

META MD5SUM SOLVER= f0471644c1818c6834832b41e70bf7e6
MD5SUM BENCH=  f1d2cd08ac7f8096a38662a7d7275db8

RANDOM SEED= 293298394

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node10.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		: 3000.232
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		: 3000.232
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:       1591616 kB
Buffers:         50200 kB
Cached:         300000 kB
SwapCached:          0 kB
Active:         250216 kB
Inactive:       144656 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1591616 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:            1228 kB
Writeback:           0 kB
Mapped:          63620 kB
Slab:            54908 kB
Committed_AS:  1369884 kB
PageTables:       1832 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= 66548 MiB

End job on node10 on Tue Feb 27 07:59:59 UTC 2007