Trace number 307994

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 51.3362 51.3539

General information on the benchmark

Namerandom/2+p/p0.7/v3500/
unif2p-p0.7-v3500-c9345-S1377128774-12-UNSAT.cnf
MD5SUMcc733e9a0d26b1e09913a40f9eba8e3c
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark28.6866
Satisfiable
(Un)Satisfiability was proved
Number of variables3500
Number of clauses9344
Sum of the clauses size25229
Maximum clause length3
Minimum clause length2
Number of clauses of size 10
Number of clauses of size 22803
Number of clauses of size 36541
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data (download as text)

51.30/51.35	c MXC attempting /tmp/evaluation/307994-1172511055/instance-307994-1172511055.cnf
51.30/51.35	c 0 assignments made, starting to guess now
51.30/51.35	c ===================================[MXC]=====================================
51.30/51.35	c | Conflicts |     ORIGINAL     |             LEARNT              | Progress |
51.30/51.35	c |           | Clauses Literals |  Limit Clauses Literals  Lit/Cl |          |
51.30/51.35	c =============================================================================
51.30/51.35	c |         0 |    6541    19623 |    2180       0       0     nan |  0.000 % |
51.30/51.35	c |       100 |    6541    19623 |    2398      99    1768    17.9 |  0.000 % |
51.30/51.35	c |       250 |    6538    19614 |    2637     244    5114    21.0 |  0.029 % |
51.30/51.35	c |       476 |    6538    19614 |    2901     468    8442    18.0 |  0.029 % |
51.30/51.35	c |       813 |    6538    19614 |    3191     804   16073    20.0 |  0.029 % |
51.30/51.35	c |      1319 |    6538    19614 |    3510    1307   25278    19.3 |  0.029 % |
51.30/51.35	c |      2079 |    6538    19614 |    3862    2064   41734    20.2 |  0.029 % |
51.30/51.35	c |      3218 |    6538    19614 |    4248    3201   63707    19.9 |  0.029 % |
51.30/51.35	c |      4926 |    6538    19614 |    4673    2781   59014    21.2 |  0.029 % |
51.30/51.35	c |      7488 |    6538    19614 |    5140    3002   71673    23.9 |  0.029 % |
51.30/51.35	c |     11333 |    6538    19614 |    5654    4273  104554    24.5 |  0.029 % |
51.30/51.35	c |     17101 |    6538    19614 |    6219    4383   87432    19.9 |  0.029 % |
51.30/51.35	c |     25750 |    6538    19614 |    6841    3701   78763    21.3 |  0.029 % |
51.30/51.35	c |     38724 |    6476    19428 |    7525    6347  141740    22.3 |  0.371 % |
51.30/51.35	c |     58187 |    6476    19428 |    8278    6998  146114    20.9 |  0.371 % |
51.30/51.35	c |     87380 |    6476    19428 |    9106    7223  184437    25.5 |  0.371 % |
51.30/51.35	c |    131169 |    6444    19332 |   10017    5485  148841    27.1 |  0.629 % |
51.30/51.35	c |    196854 |    6241    18723 |   11018    5963  118716    19.9 |  1.714 % |
51.30/51.35	c 51.330s elapsed
51.30/51.35	c restarts: 17
51.30/51.35	c decisions: 328994
51.30/51.35	c propagations: 95195497
51.30/51.35	c conflicts: 259534
51.30/51.35	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/node16/watcher-307994-1172511055 -o ROOT/results/node16/solver-307994-1172511055 -C 1200 -M 1800 --output-limit 1,15 /tmp/evaluation/307994-1172511055/mxc /tmp/evaluation/307994-1172511055/instance-307994-1172511055.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: 0.99 0.98 0.93 3/77 15830
/proc/meminfo: memFree=1421016/2055920 swapFree=4192812/4192956
[pid=15830] ppid=15828 vsize=1516 CPUtime=0
/proc/15830/stat : 15830 (mxc) R 15828 15830 14619 0 -1 4194304 234 0 0 0 0 0 0 0 18 0 1 0 271059834 1552384 218 18446744073709551615 134512640 135013041 4294956704 18446744073709551615 134691428 0 0 4096 0 0 0 0 17 1 0 0
/proc/15830/statm: 379 218 46 122 0 253 0

[startup+0.106599 s]
/proc/loadavg: 0.99 0.98 0.93 3/77 15830
/proc/meminfo: memFree=1421016/2055920 swapFree=4192812/4192956
[pid=15830] ppid=15828 vsize=1764 CPUtime=0.1
/proc/15830/stat : 15830 (mxc) R 15828 15830 14619 0 -1 4194304 323 0 0 0 10 0 0 0 18 0 1 0 271059834 1806336 270 18446744073709551615 134512640 135013041 4294956704 18446744073709551615 134520336 0 0 4096 0 0 0 0 17 1 0 0
/proc/15830/statm: 441 270 59 122 0 315 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 1764

[startup+0.514554 s]
/proc/loadavg: 0.99 0.98 0.93 3/77 15830
/proc/meminfo: memFree=1421016/2055920 swapFree=4192812/4192956
[pid=15830] ppid=15828 vsize=2160 CPUtime=0.51
/proc/15830/stat : 15830 (mxc) R 15828 15830 14619 0 -1 4194304 420 0 0 0 51 0 0 0 21 0 1 0 271059834 2211840 367 18446744073709551615 134512640 135013041 4294956704 18446744073709551615 134519627 0 0 4096 0 0 0 0 17 1 0 0
/proc/15830/statm: 540 367 59 122 0 414 0
Current children cumulated CPU time (s) 0.51
Current children cumulated vsize (KiB) 2160

[startup+1.33446 s]
/proc/loadavg: 0.99 0.98 0.93 2/78 15831
/proc/meminfo: memFree=1419536/2055920 swapFree=4192812/4192956
[pid=15830] ppid=15828 vsize=2432 CPUtime=1.33
/proc/15830/stat : 15830 (mxc) R 15828 15830 14619 0 -1 4194304 494 0 0 0 133 0 0 0 25 0 1 0 271059834 2490368 439 18446744073709551615 134512640 135013041 4294956704 18446744073709551615 134519215 0 0 4096 0 0 0 0 17 1 0 0
/proc/15830/statm: 608 439 67 122 0 482 0
Current children cumulated CPU time (s) 1.33
Current children cumulated vsize (KiB) 2432

[startup+2.97227 s]
/proc/loadavg: 0.99 0.98 0.93 2/78 15831
/proc/meminfo: memFree=1419216/2055920 swapFree=4192812/4192956
[pid=15830] ppid=15828 vsize=2564 CPUtime=2.96
/proc/15830/stat : 15830 (mxc) R 15828 15830 14619 0 -1 4194304 538 0 0 0 296 0 0 0 25 0 1 0 271059834 2625536 483 18446744073709551615 134512640 135013041 4294956704 18446744073709551615 134519200 0 0 4096 0 0 0 0 17 1 0 0
/proc/15830/statm: 641 483 67 122 0 515 0
Current children cumulated CPU time (s) 2.96
Current children cumulated vsize (KiB) 2564

[startup+6.24789 s]
/proc/loadavg: 0.99 0.98 0.93 2/78 15831
/proc/meminfo: memFree=1418896/2055920 swapFree=4192812/4192956
[pid=15830] ppid=15828 vsize=2828 CPUtime=6.24
/proc/15830/stat : 15830 (mxc) R 15828 15830 14619 0 -1 4194304 611 0 0 0 624 0 0 0 25 0 1 0 271059834 2895872 556 18446744073709551615 134512640 135013041 4294956704 18446744073709551615 134519206 0 0 4096 0 0 0 0 17 1 0 0
/proc/15830/statm: 707 556 67 122 0 581 0
Current children cumulated CPU time (s) 6.24
Current children cumulated vsize (KiB) 2828

[startup+12.7051 s]
/proc/loadavg: 0.99 0.98 0.93 2/78 15831
/proc/meminfo: memFree=1418384/2055920 swapFree=4192812/4192956
[pid=15830] ppid=15828 vsize=3220 CPUtime=12.69
/proc/15830/stat : 15830 (mxc) R 15828 15830 14619 0 -1 4194304 716 0 0 0 1269 0 0 0 25 0 1 0 271059834 3297280 661 18446744073709551615 134512640 135013041 4294956704 18446744073709551615 134531193 0 0 4096 0 0 0 0 17 1 0 0
/proc/15830/statm: 805 661 67 122 0 679 0
Current children cumulated CPU time (s) 12.69
Current children cumulated vsize (KiB) 3220

[startup+25.6046 s]
/proc/loadavg: 0.99 0.98 0.93 2/78 15831
/proc/meminfo: memFree=1417872/2055920 swapFree=4192812/4192956
[pid=15830] ppid=15828 vsize=3836 CPUtime=25.59
/proc/15830/stat : 15830 (mxc) R 15828 15830 14619 0 -1 4194304 851 0 0 0 2559 0 0 0 25 0 1 0 271059834 3928064 796 18446744073709551615 134512640 135013041 4294956704 18446744073709551615 134531117 0 0 4096 0 0 0 0 17 1 0 0
/proc/15830/statm: 959 796 67 122 0 833 0
Current children cumulated CPU time (s) 25.59
Current children cumulated vsize (KiB) 3836

[startup+51.2117 s]
/proc/loadavg: 0.99 0.98 0.93 2/78 15831
/proc/meminfo: memFree=1417616/2055920 swapFree=4192812/4192956
[pid=15830] ppid=15828 vsize=4056 CPUtime=51.19
/proc/15830/stat : 15830 (mxc) R 15828 15830 14619 0 -1 4194304 911 0 0 0 5119 0 0 0 25 0 1 0 271059834 4153344 856 18446744073709551615 134512640 135013041 4294956704 18446744073709551615 134528104 0 0 4096 0 0 0 0 17 1 0 0
/proc/15830/statm: 1014 856 67 122 0 888 0
Current children cumulated CPU time (s) 51.19
Current children cumulated vsize (KiB) 4056

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

[startup+51.3146 s]
/proc/loadavg: 0.99 0.98 0.93 2/78 15831
/proc/meminfo: memFree=1417616/2055920 swapFree=4192812/4192956
[pid=15830] ppid=15828 vsize=4056 CPUtime=51.3
/proc/15830/stat : 15830 (mxc) R 15828 15830 14619 0 -1 4194304 911 0 0 0 5130 0 0 0 25 0 1 0 271059834 4153344 856 18446744073709551615 134512640 135013041 4294956704 18446744073709551615 134519987 0 0 4096 0 0 0 0 17 1 0 0
/proc/15830/statm: 1014 856 67 122 0 888 0
Current children cumulated CPU time (s) 51.3
Current children cumulated vsize (KiB) 4056

Child status: 20
Real time (s): 51.3539
CPU time (s): 51.3362
CPU user time (s): 51.3272
CPU system time (s): 0.008998
CPU usage (%): 99.9654
Max. virtual memory (cumulated for all children) (KiB): 4056

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 51.3272
system time used= 0.008998
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 913
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= 104

runsolver used 0.06299 second user time and 0.121981 second system time

The end

Launcher Data (download as text)

Begin job on node16 on Mon Feb 26 17:30:55 UTC 2007

IDJOB= 307994
IDBENCH= 20220
IDSOLVER= 107
FILE ID= node16/307994-1172511055

PBS_JOBID= 3971593

Free space on /tmp= 66557 MiB

SOLVER NAME= MXC 2007-02-08
BENCH NAME= HOME/pub/bench/SAT07/random/2+p/p0.7/v3500/unif2p-p0.7-v3500-c9345-S1377128774-12-UNSAT.cnf
COMMAND LINE= /tmp/evaluation/307994-1172511055/mxc /tmp/evaluation/307994-1172511055/instance-307994-1172511055.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node16/watcher-307994-1172511055 -o ROOT/results/node16/solver-307994-1172511055 -C 1200 -M 1800 --output-limit 1,15  /tmp/evaluation/307994-1172511055/mxc /tmp/evaluation/307994-1172511055/instance-307994-1172511055.cnf            

META MD5SUM SOLVER= fd459248d3e92e664505cc2f0f683bf4
MD5SUM BENCH=  cc733e9a0d26b1e09913a40f9eba8e3c

RANDOM SEED= 457888382

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node16.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		: 3000.281
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		: 3000.281
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:       1421488 kB
Buffers:         61676 kB
Cached:         437988 kB
SwapCached:          0 kB
Active:         260356 kB
Inactive:       293216 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1421488 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:             832 kB
Writeback:           0 kB
Mapped:          72748 kB
Slab:            66520 kB
Committed_AS:  1057764 kB
PageTables:       1720 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= 66557 MiB

End job on node16 on Mon Feb 26 17:31:47 UTC 2007