Trace number 310618

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 14.6708 14.6874

General information on the benchmark

Namerandom/2+p/p0.9/v630/
unif2p-p0.9-v630-c2280-S1893175053-01-UNSAT.cnf
MD5SUMda575672f9caad385bd5edff99ee5f4d
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark1.42378
Satisfiable
(Un)Satisfiability was proved
Number of variables630
Number of clauses2280
Sum of the clauses size6612
Maximum clause length3
Minimum clause length2
Number of clauses of size 10
Number of clauses of size 2228
Number of clauses of size 32052
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data (download as text)

14.65/14.68	c MXC attempting /tmp/evaluation/310618-1172560423/instance-310618-1172560423.cnf
14.65/14.68	c 0 assignments made, starting to guess now
14.65/14.68	c ===================================[MXC]=====================================
14.65/14.68	c | Conflicts |     ORIGINAL     |             LEARNT              | Progress |
14.65/14.68	c |           | Clauses Literals |  Limit Clauses Literals  Lit/Cl |          |
14.65/14.68	c =============================================================================
14.65/14.68	c |         0 |    2052     6156 |    1000       0       0     nan |  0.000 % |
14.65/14.68	c |       100 |    2052     6156 |    1100      97    1374    14.2 |  0.000 % |
14.65/14.68	c |       250 |    2052     6156 |    1210     247    3289    13.3 |  0.000 % |
14.65/14.68	c |       477 |    2052     6156 |    1331     473    6424    13.6 |  0.000 % |
14.65/14.68	c |       814 |    2052     6156 |    1464     808   11303    14.0 |  0.000 % |
14.65/14.68	c |      1320 |    2052     6156 |    1610    1314   18205    13.9 |  0.000 % |
14.65/14.68	c |      2082 |    2052     6156 |    1771    1269   18018    14.2 |  0.000 % |
14.65/14.68	c |      3223 |    2052     6156 |    1948    1523   20706    13.6 |  0.000 % |
14.65/14.68	c |      4931 |    2052     6156 |    2143    1283   17803    13.9 |  0.000 % |
14.65/14.68	c |      7494 |    2052     6156 |    2357    1701   24511    14.4 |  0.000 % |
14.65/14.68	c |     11339 |    2052     6156 |    2593    2004   28920    14.4 |  0.000 % |
14.65/14.68	c |     17105 |    2052     6156 |    2853    2587   36485    14.1 |  0.000 % |
14.65/14.68	c |     25754 |    2052     6156 |    3138    2677   34878    13.0 |  0.000 % |
14.65/14.68	c |     38728 |    2052     6156 |    3452    3103   41392    13.3 |  0.000 % |
14.65/14.68	c |     58190 |    2052     6156 |    3797    1867   26996    14.5 |  0.000 % |
14.65/14.68	c |     87382 |    2052     6156 |    4177    2601   36519    14.0 |  0.000 % |
14.65/14.68	c |    131172 |    2038     6114 |    4594    2526   34458    13.6 |  0.159 % |
14.65/14.68	c |    196858 |    2009     6027 |    5054    3882   47943    12.4 |  0.476 % |
14.65/14.68	c 14.670s elapsed
14.65/14.68	c restarts: 17
14.65/14.68	c decisions: 262712
14.65/14.68	c propagations: 19782732
14.65/14.68	c conflicts: 222049
14.65/14.68	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/node2/watcher-310618-1172560423 -o ROOT/results/node2/solver-310618-1172560423 -C 1200 -M 1800 --output-limit 1,15 /tmp/evaluation/310618-1172560423/mxc /tmp/evaluation/310618-1172560423/instance-310618-1172560423.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: 0.87 0.92 0.97 3/77 28779
/proc/meminfo: memFree=1672504/2055920 swapFree=4192812/4192956
[pid=28779] ppid=28777 vsize=1064 CPUtime=0
/proc/28779/stat : 28779 (mxc) R 28777 28779 27407 0 -1 4194304 135 0 0 0 0 0 0 0 18 0 1 0 275997219 1089536 119 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134519252 0 0 4096 0 0 0 0 17 1 0 0
/proc/28779/statm: 266 119 57 122 0 140 0

[startup+0.107187 s]
/proc/loadavg: 0.87 0.92 0.97 3/77 28779
/proc/meminfo: memFree=1672504/2055920 swapFree=4192812/4192956
[pid=28779] ppid=28777 vsize=1204 CPUtime=0.1
/proc/28779/stat : 28779 (mxc) R 28777 28779 27407 0 -1 4194304 184 0 0 0 10 0 0 0 18 0 1 0 275997219 1232896 166 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134531106 0 0 4096 0 0 0 0 17 1 0 0
/proc/28779/statm: 301 166 67 122 0 175 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 1204

[startup+0.515228 s]
/proc/loadavg: 0.87 0.92 0.97 3/77 28779
/proc/meminfo: memFree=1672504/2055920 swapFree=4192812/4192956
[pid=28779] ppid=28777 vsize=1336 CPUtime=0.51
/proc/28779/stat : 28779 (mxc) R 28777 28779 27407 0 -1 4194304 218 0 0 0 51 0 0 0 22 0 1 0 275997219 1368064 200 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134529717 0 0 4096 0 0 0 0 17 1 0 0
/proc/28779/statm: 334 200 67 122 0 208 0
Current children cumulated CPU time (s) 0.51
Current children cumulated vsize (KiB) 1336

[startup+1.33731 s]
/proc/loadavg: 0.88 0.92 0.97 2/78 28780
/proc/meminfo: memFree=1671792/2055920 swapFree=4192812/4192956
[pid=28779] ppid=28777 vsize=1468 CPUtime=1.33
/proc/28779/stat : 28779 (mxc) R 28777 28779 27407 0 -1 4194304 244 0 0 0 133 0 0 0 25 0 1 0 275997219 1503232 226 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134519587 0 0 4096 0 0 0 0 17 1 0 0
/proc/28779/statm: 367 226 67 122 0 241 0
Current children cumulated CPU time (s) 1.33
Current children cumulated vsize (KiB) 1468

[startup+2.97848 s]
/proc/loadavg: 0.88 0.92 0.97 2/78 28780
/proc/meminfo: memFree=1671600/2055920 swapFree=4192812/4192956
[pid=28779] ppid=28777 vsize=1588 CPUtime=2.97
/proc/28779/stat : 28779 (mxc) R 28777 28779 27407 0 -1 4194304 282 0 0 0 297 0 0 0 25 0 1 0 275997219 1626112 264 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134530135 0 0 4096 0 0 0 0 17 1 0 0
/proc/28779/statm: 397 264 67 122 0 271 0
Current children cumulated CPU time (s) 2.97
Current children cumulated vsize (KiB) 1588

[startup+6.25483 s]
/proc/loadavg: 0.89 0.92 0.97 2/78 28780
/proc/meminfo: memFree=1671280/2055920 swapFree=4192812/4192956
[pid=28779] ppid=28777 vsize=1720 CPUtime=6.25
/proc/28779/stat : 28779 (mxc) R 28777 28779 27407 0 -1 4194304 319 0 0 0 625 0 0 0 25 0 1 0 275997219 1761280 301 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134530114 0 0 4096 0 0 0 0 17 1 0 0
/proc/28779/statm: 430 301 67 122 0 304 0
Current children cumulated CPU time (s) 6.25
Current children cumulated vsize (KiB) 1720

[startup+12.7105 s]
/proc/loadavg: 0.90 0.92 0.97 2/78 28780
/proc/meminfo: memFree=1671032/2055920 swapFree=4192812/4192956
[pid=28779] ppid=28777 vsize=1948 CPUtime=12.7
/proc/28779/stat : 28779 (mxc) R 28777 28779 27407 0 -1 4194304 366 0 0 0 1270 0 0 0 25 0 1 0 275997219 1994752 348 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134519311 0 0 4096 0 0 0 0 17 1 0 0
/proc/28779/statm: 487 348 67 122 0 361 0
Current children cumulated CPU time (s) 12.7
Current children cumulated vsize (KiB) 1948

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

[startup+13.1195 s]
/proc/loadavg: 0.90 0.92 0.97 2/78 28780
/proc/meminfo: memFree=1671032/2055920 swapFree=4192812/4192956
[pid=28779] ppid=28777 vsize=1948 CPUtime=13.11
/proc/28779/stat : 28779 (mxc) R 28777 28779 27407 0 -1 4194304 368 0 0 0 1311 0 0 0 25 0 1 0 275997219 1994752 350 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134529698 0 0 4096 0 0 0 0 17 1 0 0
/proc/28779/statm: 487 350 67 122 0 361 0
Current children cumulated CPU time (s) 13.11
Current children cumulated vsize (KiB) 1948

[startup+13.9396 s]
/proc/loadavg: 0.90 0.92 0.97 2/78 28780
/proc/meminfo: memFree=1671032/2055920 swapFree=4192812/4192956
[pid=28779] ppid=28777 vsize=1948 CPUtime=13.93
/proc/28779/stat : 28779 (mxc) R 28777 28779 27407 0 -1 4194304 370 0 0 0 1393 0 0 0 25 0 1 0 275997219 1994752 352 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134519987 0 0 4096 0 0 0 0 17 1 0 0
/proc/28779/statm: 487 352 67 122 0 361 0
Current children cumulated CPU time (s) 13.93
Current children cumulated vsize (KiB) 1948

[startup+14.3477 s]
/proc/loadavg: 0.90 0.92 0.97 2/78 28780
/proc/meminfo: memFree=1671032/2055920 swapFree=4192812/4192956
[pid=28779] ppid=28777 vsize=1948 CPUtime=14.34
/proc/28779/stat : 28779 (mxc) R 28777 28779 27407 0 -1 4194304 374 0 0 0 1434 0 0 0 25 0 1 0 275997219 1994752 356 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134519311 0 0 4096 0 0 0 0 17 1 0 0
/proc/28779/statm: 487 356 67 122 0 361 0
Current children cumulated CPU time (s) 14.34
Current children cumulated vsize (KiB) 1948

[startup+14.5517 s]
/proc/loadavg: 0.90 0.92 0.97 2/78 28780
/proc/meminfo: memFree=1671032/2055920 swapFree=4192812/4192956
[pid=28779] ppid=28777 vsize=1948 CPUtime=14.54
/proc/28779/stat : 28779 (mxc) R 28777 28779 27407 0 -1 4194304 374 0 0 0 1454 0 0 0 25 0 1 0 275997219 1994752 356 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134519261 0 0 4096 0 0 0 0 17 1 0 0
/proc/28779/statm: 487 356 67 122 0 361 0
Current children cumulated CPU time (s) 14.54
Current children cumulated vsize (KiB) 1948

[startup+14.6537 s]
/proc/loadavg: 0.90 0.92 0.97 2/78 28780
/proc/meminfo: memFree=1671032/2055920 swapFree=4192812/4192956
[pid=28779] ppid=28777 vsize=1948 CPUtime=14.65
/proc/28779/stat : 28779 (mxc) R 28777 28779 27407 0 -1 4194304 374 0 0 0 1465 0 0 0 25 0 1 0 275997219 1994752 356 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134519215 0 0 4096 0 0 0 0 17 1 0 0
/proc/28779/statm: 487 356 67 122 0 361 0
Current children cumulated CPU time (s) 14.65
Current children cumulated vsize (KiB) 1948

Child status: 20
Real time (s): 14.6874
CPU time (s): 14.6708
CPU user time (s): 14.6678
CPU system time (s): 0.002999
CPU usage (%): 99.8865
Max. virtual memory (cumulated for all children) (KiB): 1948

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 14.6678
system time used= 0.002999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 375
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= 293

runsolver used 0.014997 second user time and 0.044993 second system time

The end

Launcher Data (download as text)

Begin job on node2 on Tue Feb 27 07:13:43 UTC 2007

IDJOB= 310618
IDBENCH= 20292
IDSOLVER= 107
FILE ID= node2/310618-1172560423

PBS_JOBID= 3971655

Free space on /tmp= 66558 MiB

SOLVER NAME= MXC 2007-02-08
BENCH NAME= HOME/pub/bench/SAT07/random/2+p/p0.9/v630/unif2p-p0.9-v630-c2280-S1893175053-01-UNSAT.cnf
COMMAND LINE= /tmp/evaluation/310618-1172560423/mxc /tmp/evaluation/310618-1172560423/instance-310618-1172560423.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node2/watcher-310618-1172560423 -o ROOT/results/node2/solver-310618-1172560423 -C 1200 -M 1800 --output-limit 1,15  /tmp/evaluation/310618-1172560423/mxc /tmp/evaluation/310618-1172560423/instance-310618-1172560423.cnf            

META MD5SUM SOLVER= fd459248d3e92e664505cc2f0f683bf4
MD5SUM BENCH=  da575672f9caad385bd5edff99ee5f4d

RANDOM SEED= 177772811

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node2.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		: 3000.247
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		: 3000.247
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:       1672912 kB
Buffers:         47812 kB
Cached:         205420 kB
SwapCached:          0 kB
Active:         249680 kB
Inactive:        63440 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1672912 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:             616 kB
Writeback:           0 kB
Mapped:          78784 kB
Slab:            55360 kB
Committed_AS:  1307848 kB
PageTables:       1812 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= 66558 MiB

End job on node2 on Tue Feb 27 07:13:58 UTC 2007