Trace number 311521

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 3.10753 3.11248

General information on the benchmark

Namerandom/2+p/p0.8/v2035/
unif2p-p0.8-v2035-c6328-S668297284-15-SAT.cnf
MD5SUM4d15e4ef1977463310683c8d04611f9d
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.433933
Satisfiable
(Un)Satisfiability was proved
Number of variables2035
Number of clauses6327
Sum of the clauses size17716
Maximum clause length3
Minimum clause length2
Number of clauses of size 10
Number of clauses of size 21265
Number of clauses of size 35062
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/node25/watcher-311521-1172571311 -o ROOT/results/node25/solver-311521-1172571311 -C 1200 -M 1800 --output-limit 1,15 /tmp/evaluation/311521-1172571311/mmisat /tmp/evaluation/311521-1172571311/instance-311521-1172571311.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 0.98 0.99 3/64 11326
/proc/meminfo: memFree=1818336/2055920 swapFree=4183552/4192956
[pid=11326] ppid=11324 vsize=1440 CPUtime=0
/proc/11326/stat : 11326 (mmisat) R 11324 11326 11188 0 -1 4194304 207 0 0 0 0 0 0 0 18 0 1 0 51753322 1474560 190 18446744073709551615 134512640 135391789 4294956720 18446744073709551615 134998823 0 0 4096 0 0 0 0 17 1 0 0
/proc/11326/statm: 360 191 81 214 0 142 0

[startup+0.107174 s]
/proc/loadavg: 0.94 0.98 0.99 3/64 11326
/proc/meminfo: memFree=1818336/2055920 swapFree=4183552/4192956
[pid=11326] ppid=11324 vsize=3288 CPUtime=0.1
/proc/11326/stat : 11326 (mmisat) R 11324 11326 11188 0 -1 4194304 673 0 0 0 10 0 0 0 18 0 1 0 51753322 3366912 656 18446744073709551615 134512640 135391789 4294956720 18446744073709551615 134998823 0 0 4096 0 0 0 0 17 1 0 0
/proc/11326/statm: 822 656 81 214 0 604 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 3288

[startup+0.515211 s]
/proc/loadavg: 0.94 0.98 0.99 3/64 11326
/proc/meminfo: memFree=1818336/2055920 swapFree=4183552/4192956
[pid=11326] ppid=11324 vsize=5664 CPUtime=0.51
/proc/11326/stat : 11326 (mmisat) R 11324 11326 11188 0 -1 4194304 1275 0 0 0 51 0 0 0 21 0 1 0 51753322 5799936 1258 18446744073709551615 134512640 135391789 4294956720 18446744073709551615 134998823 0 0 4096 0 0 0 0 17 1 0 0
/proc/11326/statm: 1416 1258 81 214 0 1198 0
Current children cumulated CPU time (s) 0.51
Current children cumulated vsize (KiB) 5664

[startup+1.33729 s]
/proc/loadavg: 0.94 0.98 0.99 2/65 11327
/proc/meminfo: memFree=1811416/2055920 swapFree=4183552/4192956
[pid=11326] ppid=11324 vsize=8436 CPUtime=1.33
/proc/11326/stat : 11326 (mmisat) R 11324 11326 11188 0 -1 4194304 1964 0 0 0 133 0 0 0 25 0 1 0 51753322 8638464 1947 18446744073709551615 134512640 135391789 4294956720 18446744073709551615 134517190 0 0 4096 0 0 0 0 17 1 0 0
/proc/11326/statm: 2109 1947 81 214 0 1891 0
Current children cumulated CPU time (s) 1.33
Current children cumulated vsize (KiB) 8436

[startup+2.97443 s]
/proc/loadavg: 0.94 0.98 0.99 2/65 11327
/proc/meminfo: memFree=1808600/2055920 swapFree=4183552/4192956
[pid=11326] ppid=11324 vsize=29864 CPUtime=2.97
/proc/11326/stat : 11326 (mmisat) R 11324 11326 11188 0 -1 4194304 7318 0 0 0 295 2 0 0 25 0 1 0 51753322 30580736 7301 18446744073709551615 134512640 135391789 4294956720 18446744073709551615 135151946 0 0 4096 0 0 0 0 17 1 0 0
/proc/11326/statm: 7466 7301 568 214 0 7248 0
Current children cumulated CPU time (s) 2.97
Current children cumulated vsize (KiB) 29864

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

[startup+3.07644 s]
/proc/loadavg: 0.94 0.98 0.99 2/65 11327
/proc/meminfo: memFree=1808600/2055920 swapFree=4183552/4192956
[pid=11326] ppid=11324 vsize=20292 CPUtime=3.06
/proc/11326/stat : 11326 (mmisat) R 11324 11326 11188 0 -1 4195840 7327 0 0 0 300 6 0 0 25 0 1 0 51753322 20779008 4938 18446744073709551615 134512640 135391789 4294956720 18446744073709551615 134551852 0 0 4096 0 0 0 0 17 1 0 0
/proc/11326/statm: 5073 4938 86 214 0 4855 0
Current children cumulated CPU time (s) 3.06
Current children cumulated vsize (KiB) 20292

Child ended because it received signal 11 (SIGSEGV)
Real time (s): 3.11248
CPU time (s): 3.10753
CPU user time (s): 3.00654
CPU system time (s): 0.100984
CPU usage (%): 99.8409
Max. virtual memory (cumulated for all children) (KiB): 29864

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 3.00654
system time used= 0.100984
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 7329
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= 16

runsolver used 0.004999 second user time and 0.008998 second system time

The end



Launcher Data (download as text)




Begin job on node25 on Tue Feb 27 10:15:11 UTC 2007

IDJOB= 311521
IDBENCH= 20316
IDSOLVER= 108
FILE ID= node25/311521-1172571311

PBS_JOBID= 3971913

Free space on /tmp= 66559 MiB

SOLVER NAME= Mmisat 2007-02-08
BENCH NAME= HOME/pub/bench/SAT07/random/2+p/p0.8/v2035/unif2p-p0.8-v2035-c6328-S668297284-15-SAT.cnf
COMMAND LINE= /tmp/evaluation/311521-1172571311/mmisat /tmp/evaluation/311521-1172571311/instance-311521-1172571311.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node25/watcher-311521-1172571311 -o ROOT/results/node25/solver-311521-1172571311 -C 1200 -M 1800 --output-limit 1,15  /tmp/evaluation/311521-1172571311/mmisat /tmp/evaluation/311521-1172571311/instance-311521-1172571311.cnf            

META MD5SUM SOLVER= f0471644c1818c6834832b41e70bf7e6
MD5SUM BENCH=  4d15e4ef1977463310683c8d04611f9d

RANDOM SEED= 164407983

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node25.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:       1818808 kB
Buffers:         32400 kB
Cached:         157156 kB
SwapCached:       3632 kB
Active:          97656 kB
Inactive:       101912 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1818808 kB
SwapTotal:     4192956 kB
SwapFree:      4183552 kB
Dirty:            1504 kB
Writeback:           0 kB
Mapped:          15348 kB
Slab:            23644 kB
Committed_AS:   127296 kB
PageTables:       1472 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= 66540 MiB

End job on node25 on Tue Feb 27 10:15:14 UTC 2007