Trace number 312217

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
MXC 2007-02-08UNSAT 4.67329 4.68789

General information on the benchmark

Namerandom/2+p/p0.8/v1665/
unif2p-p0.8-v1665-c5178-S1104990816-03-UNSAT.cnf
MD5SUMa72030f9b5b8bc8b27629e6299239dd6
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark1.27281
Satisfiable
(Un)Satisfiability was proved
Number of variables1665
Number of clauses5177
Sum of the clauses size14496
Maximum clause length3
Minimum clause length2
Number of clauses of size 10
Number of clauses of size 21035
Number of clauses of size 34142
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data (download as text)

4.60/4.68	c MXC attempting /tmp/evaluation/312217-1172583966/instance-312217-1172583966.cnf
4.60/4.68	c 0 assignments made, starting to guess now
4.60/4.68	c ===================================[MXC]=====================================
4.60/4.68	c | Conflicts |     ORIGINAL     |             LEARNT              | Progress |
4.60/4.68	c |           | Clauses Literals |  Limit Clauses Literals  Lit/Cl |          |
4.60/4.68	c =============================================================================
4.60/4.68	c |         0 |    4142    12426 |    1380       0       0     nan |  0.000 % |
4.60/4.68	c |       100 |    4030    12090 |    1518      99    1738    17.6 |  0.901 % |
4.60/4.68	c |       250 |    4030    12090 |    1669     248    4421    17.8 |  0.901 % |
4.60/4.68	c |       475 |    4030    12090 |    1836     472    7851    16.6 |  0.901 % |
4.60/4.68	c |       812 |    4030    12090 |    2020     805   12703    15.8 |  0.901 % |
4.60/4.68	c |      1318 |    4030    12090 |    2222    1309   20896    16.0 |  0.901 % |
4.60/4.68	c |      2078 |    4030    12090 |    2444    2067   37735    18.3 |  0.901 % |
4.60/4.68	c |      3218 |    4030    12090 |    2689    1983   39229    19.8 |  0.901 % |
4.60/4.68	c |      4926 |    4030    12090 |    2958    2345   40330    17.2 |  0.901 % |
4.60/4.68	c |      7488 |    4030    12090 |    3253    1951   32070    16.4 |  0.901 % |
4.60/4.68	c |     11332 |    4030    12090 |    3579    2541   45357    17.9 |  0.901 % |
4.60/4.68	c |     17098 |    4030    12090 |    3937    2934   51496    17.6 |  0.901 % |
4.60/4.68	c |     25748 |    4030    12090 |    4331    3706   63049    17.0 |  0.901 % |
4.60/4.68	c |     38724 |    3863    11589 |    4764    2587   38088    14.7 |  2.102 % |
4.60/4.68	c 4.670s elapsed
4.60/4.68	c restarts: 13
4.60/4.68	c decisions: 55388
4.60/4.68	c propagations: 9182834
4.60/4.68	c conflicts: 45011
4.60/4.68	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/node41/watcher-312217-1172583966 -o ROOT/results/node41/solver-312217-1172583966 -C 1200 -M 1800 --output-limit 1,15 /tmp/evaluation/312217-1172583966/mxc /tmp/evaluation/312217-1172583966/instance-312217-1172583966.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: 0.93 0.98 0.99 3/64 20303
/proc/meminfo: memFree=1811744/2055920 swapFree=4172320/4192956
[pid=20303] ppid=20301 vsize=1352 CPUtime=0
/proc/20303/stat : 20303 (mxc) R 20301 20303 19075 0 -1 4194304 183 0 0 0 0 0 0 0 18 0 1 0 278352582 1384448 167 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134688363 0 0 4096 0 0 0 0 17 1 0 0
/proc/20303/statm: 338 167 46 122 0 212 0

[startup+0.107666 s]
/proc/loadavg: 0.93 0.98 0.99 3/64 20303
/proc/meminfo: memFree=1811744/2055920 swapFree=4172320/4192956
[pid=20303] ppid=20301 vsize=1484 CPUtime=0.1
/proc/20303/stat : 20303 (mxc) R 20301 20303 19075 0 -1 4194304 220 0 0 0 10 0 0 0 18 0 1 0 278352582 1519616 204 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134519619 0 0 4096 0 0 0 0 17 1 0 0
/proc/20303/statm: 371 204 59 122 0 245 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 1484

[startup+0.51569 s]
/proc/loadavg: 0.93 0.98 0.99 3/64 20303
/proc/meminfo: memFree=1811744/2055920 swapFree=4172320/4192956
[pid=20303] ppid=20301 vsize=1624 CPUtime=0.51
/proc/20303/stat : 20303 (mxc) R 20301 20303 19075 0 -1 4194304 293 0 0 0 51 0 0 0 21 0 1 0 278352582 1662976 275 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134529754 0 0 4096 0 0 0 0 17 1 0 0
/proc/20303/statm: 406 275 67 122 0 280 0
Current children cumulated CPU time (s) 0.51
Current children cumulated vsize (KiB) 1624

[startup+1.33576 s]
/proc/loadavg: 0.94 0.98 0.99 2/65 20304
/proc/meminfo: memFree=1810776/2055920 swapFree=4172320/4192956
[pid=20303] ppid=20301 vsize=1752 CPUtime=1.33
/proc/20303/stat : 20303 (mxc) R 20301 20303 19075 0 -1 4194304 327 0 0 0 133 0 0 0 25 0 1 0 278352582 1794048 309 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134519215 0 0 4096 0 0 0 0 17 1 0 0
/proc/20303/statm: 438 309 67 122 0 312 0
Current children cumulated CPU time (s) 1.33
Current children cumulated vsize (KiB) 1752

[startup+2.9719 s]
/proc/loadavg: 0.94 0.98 0.99 2/65 20304
/proc/meminfo: memFree=1810520/2055920 swapFree=4172320/4192956
[pid=20303] ppid=20301 vsize=1884 CPUtime=2.96
/proc/20303/stat : 20303 (mxc) R 20301 20303 19075 0 -1 4194304 358 0 0 0 296 0 0 0 25 0 1 0 278352582 1929216 340 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134530184 0 0 4096 0 0 0 0 17 1 0 0
/proc/20303/statm: 471 340 67 122 0 345 0
Current children cumulated CPU time (s) 2.96
Current children cumulated vsize (KiB) 1884

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

[startup+3.27793 s]
/proc/loadavg: 0.94 0.98 0.99 2/65 20304
/proc/meminfo: memFree=1810520/2055920 swapFree=4172320/4192956
[pid=20303] ppid=20301 vsize=1884 CPUtime=3.27
/proc/20303/stat : 20303 (mxc) R 20301 20303 19075 0 -1 4194304 358 0 0 0 327 0 0 0 25 0 1 0 278352582 1929216 340 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134519964 0 0 4096 0 0 0 0 17 1 0 0
/proc/20303/statm: 471 340 67 122 0 345 0
Current children cumulated CPU time (s) 3.27
Current children cumulated vsize (KiB) 1884

[startup+4.098 s]
/proc/loadavg: 0.94 0.98 0.99 2/65 20304
/proc/meminfo: memFree=1810456/2055920 swapFree=4172320/4192956
[pid=20303] ppid=20301 vsize=2012 CPUtime=4.09
/proc/20303/stat : 20303 (mxc) R 20301 20303 19075 0 -1 4194304 366 0 0 0 409 0 0 0 25 0 1 0 278352582 2060288 348 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134519311 0 0 4096 0 0 0 0 17 1 0 0
/proc/20303/statm: 503 348 67 122 0 377 0
Current children cumulated CPU time (s) 4.09
Current children cumulated vsize (KiB) 2012

[startup+4.50604 s]
/proc/loadavg: 0.94 0.98 0.99 2/65 20304
/proc/meminfo: memFree=1810392/2055920 swapFree=4172320/4192956
[pid=20303] ppid=20301 vsize=2012 CPUtime=4.5
/proc/20303/stat : 20303 (mxc) R 20301 20303 19075 0 -1 4194304 374 0 0 0 450 0 0 0 25 0 1 0 278352582 2060288 356 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134535083 0 0 4096 0 0 0 0 17 1 0 0
/proc/20303/statm: 503 356 67 122 0 377 0
Current children cumulated CPU time (s) 4.5
Current children cumulated vsize (KiB) 2012

[startup+4.61205 s]
/proc/loadavg: 0.94 0.98 0.99 2/65 20304
/proc/meminfo: memFree=1810392/2055920 swapFree=4172320/4192956
[pid=20303] ppid=20301 vsize=2012 CPUtime=4.6
/proc/20303/stat : 20303 (mxc) R 20301 20303 19075 0 -1 4194304 374 0 0 0 460 0 0 0 25 0 1 0 278352582 2060288 356 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134530302 0 0 4096 0 0 0 0 17 1 0 0
/proc/20303/statm: 503 356 67 122 0 377 0
Current children cumulated CPU time (s) 4.6
Current children cumulated vsize (KiB) 2012

Child status: 20
Real time (s): 4.68789
CPU time (s): 4.67329
CPU user time (s): 4.67229
CPU system time (s): 0.000999
CPU usage (%): 99.6885
Max. virtual memory (cumulated for all children) (KiB): 2012

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 4.67229
system time used= 0.000999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 376
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= 9
involuntary context switches= 2

runsolver used 0.005999 second user time and 0.014997 second system time

The end

Launcher Data (download as text)

Begin job on node41 on Tue Feb 27 13:46:06 UTC 2007

IDJOB= 312217
IDBENCH= 20335
IDSOLVER= 107
FILE ID= node41/312217-1172583966

PBS_JOBID= 3971916

Free space on /tmp= 66560 MiB

SOLVER NAME= MXC 2007-02-08
BENCH NAME= HOME/pub/bench/SAT07/random/2+p/p0.8/v1665/unif2p-p0.8-v1665-c5178-S1104990816-03-UNSAT.cnf
COMMAND LINE= /tmp/evaluation/312217-1172583966/mxc /tmp/evaluation/312217-1172583966/instance-312217-1172583966.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node41/watcher-312217-1172583966 -o ROOT/results/node41/solver-312217-1172583966 -C 1200 -M 1800 --output-limit 1,15  /tmp/evaluation/312217-1172583966/mxc /tmp/evaluation/312217-1172583966/instance-312217-1172583966.cnf            

META MD5SUM SOLVER= fd459248d3e92e664505cc2f0f683bf4
MD5SUM BENCH=  a72030f9b5b8bc8b27629e6299239dd6

RANDOM SEED= 962151771

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node41.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		: 3000.231
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		: 3000.231
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:       1812152 kB
Buffers:         34024 kB
Cached:         148624 kB
SwapCached:      14892 kB
Active:         117200 kB
Inactive:        87184 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1812152 kB
SwapTotal:     4192956 kB
SwapFree:      4172320 kB
Dirty:             860 kB
Writeback:           0 kB
Mapped:          15704 kB
Slab:            25340 kB
Committed_AS:   568412 kB
PageTables:       1476 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= 66560 MiB

End job on node41 on Tue Feb 27 13:46:11 UTC 2007