Trace number 309881

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 1.25481 1.25576

General information on the benchmark

Namerandom/2+p/p0.9/v810/
unif2p-p0.9-v810-c2932-S1966306571-20-UNSAT.cnf
MD5SUM1fb4312d0666ff719508e19a3e9de045
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark228.565
Satisfiable
(Un)Satisfiability was proved
Number of variables810
Number of clauses2931
Sum of the clauses size8500
Maximum clause length3
Minimum clause length2
Number of clauses of size 10
Number of clauses of size 2293
Number of clauses of size 32638
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/node75/watcher-309881-1172549043 -o ROOT/results/node75/solver-309881-1172549043 -C 1200 -M 1800 --output-limit 1,15 /tmp/evaluation/309881-1172549043/mmisat /tmp/evaluation/309881-1172549043/instance-309881-1172549043.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: 0.94 0.99 0.99 3/64 15665
/proc/meminfo: memFree=1822584/2055920 swapFree=4183048/4192956
[pid=15665] ppid=15663 vsize=1176 CPUtime=0
/proc/15665/stat : 15665 (mmisat) R 15663 15665 14416 0 -1 4194304 171 0 0 0 0 0 0 0 18 0 1 0 274870118 1204224 154 18446744073709551615 134512640 135391789 4294956720 18446744073709551615 134998823 0 0 4096 0 0 0 0 17 1 0 0
/proc/15665/statm: 294 154 81 214 0 76 0

[startup+0.107327 s]
/proc/loadavg: 0.94 0.99 0.99 3/64 15665
/proc/meminfo: memFree=1822584/2055920 swapFree=4183048/4192956
[pid=15665] ppid=15663 vsize=2100 CPUtime=0.1
/proc/15665/stat : 15665 (mmisat) R 15663 15665 14416 0 -1 4194304 379 0 0 0 10 0 0 0 18 0 1 0 274870118 2150400 362 18446744073709551615 134512640 135391789 4294956720 18446744073709551615 134998823 0 0 4096 0 0 0 0 17 1 0 0
/proc/15665/statm: 525 362 81 214 0 307 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 2100

[startup+0.515373 s]
/proc/loadavg: 0.94 0.99 0.99 3/64 15665
/proc/meminfo: memFree=1822584/2055920 swapFree=4183048/4192956
[pid=15665] ppid=15663 vsize=7160 CPUtime=0.5
/proc/15665/stat : 15665 (mmisat) R 15663 15665 14416 0 -1 4194304 1669 0 0 0 50 0 0 0 22 0 1 0 274870118 7331840 1652 18446744073709551615 134512640 135391789 4294956720 18446744073709551615 134554288 0 0 4096 0 0 0 0 17 1 0 0
/proc/15665/statm: 1790 1652 87 214 0 1572 0
Current children cumulated CPU time (s) 0.5
Current children cumulated vsize (KiB) 7160

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

[startup+0.821408 s]
/proc/loadavg: 0.94 0.99 0.99 3/64 15665
/proc/meminfo: memFree=1822584/2055920 swapFree=4183048/4192956
[pid=15665] ppid=15663 vsize=7172 CPUtime=0.81
/proc/15665/stat : 15665 (mmisat) R 15663 15665 14416 0 -1 4194304 1680 0 0 0 81 0 0 0 25 0 1 0 274870118 7344128 1663 18446744073709551615 134512640 135391789 4294956720 18446744073709551615 134548814 0 0 4096 0 0 0 0 17 1 0 0
/proc/15665/statm: 1793 1663 91 214 0 1575 0
Current children cumulated CPU time (s) 0.81
Current children cumulated vsize (KiB) 7172

[startup+1.23346 s]
/proc/loadavg: 0.94 0.99 0.99 2/65 15666
/proc/meminfo: memFree=1816240/2055920 swapFree=4183048/4192956
[pid=15665] ppid=15663 vsize=7172 CPUtime=1.22
/proc/15665/stat : 15665 (mmisat) R 15663 15665 14416 0 -1 4195840 1683 0 0 0 122 0 0 0 25 0 1 0 274870118 7344128 1663 18446744073709551615 134512640 135391789 4294956720 18446744073709551615 134515500 0 0 4096 0 0 0 0 17 1 0 0
/proc/15665/statm: 1793 1663 91 214 0 1575 0
Current children cumulated CPU time (s) 1.22
Current children cumulated vsize (KiB) 7172

Child ended because it received signal 11 (SIGSEGV)
Real time (s): 1.25576
CPU time (s): 1.25481
CPU user time (s): 1.22381
CPU system time (s): 0.030995
CPU usage (%): 99.9246
Max. virtual memory (cumulated for all children) (KiB): 7172

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 1.22381
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= 1685
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= 4

runsolver used 0.003999 second user time and 0.008998 second system time

The end



Launcher Data (download as text)




Begin job on node75 on Tue Feb 27 04:04:03 UTC 2007

IDJOB= 309881
IDBENCH= 20272
IDSOLVER= 108
FILE ID= node75/309881-1172549043

PBS_JOBID= 3971851

Free space on /tmp= 66558 MiB

SOLVER NAME= Mmisat 2007-02-08
BENCH NAME= HOME/pub/bench/SAT07/random/2+p/p0.9/v810/unif2p-p0.9-v810-c2932-S1966306571-20-UNSAT.cnf
COMMAND LINE= /tmp/evaluation/309881-1172549043/mmisat /tmp/evaluation/309881-1172549043/instance-309881-1172549043.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node75/watcher-309881-1172549043 -o ROOT/results/node75/solver-309881-1172549043 -C 1200 -M 1800 --output-limit 1,15  /tmp/evaluation/309881-1172549043/mmisat /tmp/evaluation/309881-1172549043/instance-309881-1172549043.cnf            

META MD5SUM SOLVER= f0471644c1818c6834832b41e70bf7e6
MD5SUM BENCH=  1fb4312d0666ff719508e19a3e9de045

RANDOM SEED= 50099188

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node75.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		: 3000.218
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		: 3000.218
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	: 5996.54
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2055920 kB
MemFree:       1823056 kB
Buffers:         31188 kB
Cached:         153780 kB
SwapCached:       4140 kB
Active:          94528 kB
Inactive:       100828 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1823056 kB
SwapTotal:     4192956 kB
SwapFree:      4183048 kB
Dirty:            1128 kB
Writeback:           0 kB
Mapped:          15844 kB
Slab:            23468 kB
Committed_AS:   743048 kB
PageTables:       1436 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= 66552 MiB

End job on node75 on Tue Feb 27 04:04:04 UTC 2007