Trace number 427098

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 4.65529 4.6714

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 benchmark1.2808
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)

4.59/4.66	c MXC attempting /tmp/evaluation/427098-1177831784/instance-427098-1177831784.cnf
4.59/4.66	c 0 assignments made, starting to guess now
4.59/4.66	c ===================================[MXC]=====================================
4.59/4.66	c | Conflicts |     ORIGINAL     |             LEARNT              | Progress |
4.59/4.66	c |           | Clauses Literals |  Limit Clauses Literals  Lit/Cl |          |
4.59/4.66	c =============================================================================
4.59/4.66	c |         0 |    4142    12426 |    1380       0       0     nan |  0.000 % |
4.59/4.66	c |       100 |    4030    12090 |    1518      99    1738    17.6 |  0.901 % |
4.59/4.66	c |       250 |    4030    12090 |    1669     248    4421    17.8 |  0.901 % |
4.59/4.66	c |       475 |    4030    12090 |    1836     472    7851    16.6 |  0.901 % |
4.59/4.66	c |       812 |    4030    12090 |    2020     805   12703    15.8 |  0.901 % |
4.59/4.66	c |      1318 |    4030    12090 |    2222    1309   20896    16.0 |  0.901 % |
4.59/4.66	c |      2078 |    4030    12090 |    2444    2067   37735    18.3 |  0.901 % |
4.59/4.66	c |      3218 |    4030    12090 |    2689    1983   39229    19.8 |  0.901 % |
4.59/4.67	c |      4926 |    4030    12090 |    2958    2345   40330    17.2 |  0.901 % |
4.59/4.67	c |      7488 |    4030    12090 |    3253    1951   32070    16.4 |  0.901 % |
4.59/4.67	c |     11332 |    4030    12090 |    3579    2541   45357    17.9 |  0.901 % |
4.59/4.67	c |     17098 |    4030    12090 |    3937    2934   51496    17.6 |  0.901 % |
4.59/4.67	c |     25748 |    4030    12090 |    4331    3706   63049    17.0 |  0.901 % |
4.59/4.67	c |     38724 |    3863    11589 |    4764    2587   38088    14.7 |  2.102 % |
4.59/4.67	c 4.650s elapsed
4.59/4.67	c restarts: 13
4.59/4.67	c decisions: 55388
4.59/4.67	c propagations: 9182834
4.59/4.67	c conflicts: 45011
4.59/4.67	s UNSATISFIABLE

Verifier Data (download as text)

No possible verification on an UNSAT instance

Watcher Data (download as text)

runsolver version 3.2.3 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node7/watcher-427098-1177831784 -o ROOT/results/node7/solver-427098-1177831784 -C 5000 -W 7500 -M 1800 --output-limit 1,15 /tmp/evaluation/427098-1177831784/mxc /tmp/evaluation/427098-1177831784/instance-427098-1177831784.cnf 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 5000 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 5030 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 7500 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: 1.80 1.45 1.17 3/77 15835
/proc/meminfo: memFree=1630704/2055920 swapFree=4156360/4192956
[pid=15835] ppid=15833 vsize=1352 CPUtime=0
/proc/15835/stat : 15835 (mxc) R 15833 15835 13601 0 -1 4194304 182 0 0 0 0 0 0 0 18 0 1 0 259216036 1384448 167 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134688363 0 0 4096 0 0 0 0 17 1 0 0
/proc/15835/statm: 338 167 46 122 0 212 0

[startup+0.00701011 s]
/proc/loadavg: 1.80 1.45 1.17 3/77 15835
/proc/meminfo: memFree=1630704/2055920 swapFree=4156360/4192956
[pid=15835] ppid=15833 vsize=1352 CPUtime=0
/proc/15835/stat : 15835 (mxc) R 15833 15835 13601 0 -1 4194304 198 0 0 0 0 0 0 0 18 0 1 0 259216036 1384448 183 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134531259 0 0 4096 0 0 0 0 17 1 0 0
/proc/15835/statm: 338 183 57 122 0 212 0
Current children cumulated CPU time (s) 0
Current children cumulated vsize (KiB) 1352

[startup+0.10302 s]
/proc/loadavg: 1.80 1.45 1.17 3/77 15835
/proc/meminfo: memFree=1630704/2055920 swapFree=4156360/4192956
[pid=15835] ppid=15833 vsize=1484 CPUtime=0.1
/proc/15835/stat : 15835 (mxc) R 15833 15835 13601 0 -1 4194304 218 0 0 0 10 0 0 0 18 0 1 0 259216036 1519616 203 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134530208 0 0 4096 0 0 0 0 17 1 0 0
/proc/15835/statm: 371 203 59 122 0 245 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 1484

[startup+0.302041 s]
/proc/loadavg: 1.80 1.45 1.17 3/77 15835
/proc/meminfo: memFree=1630704/2055920 swapFree=4156360/4192956
[pid=15835] ppid=15833 vsize=1624 CPUtime=0.3
/proc/15835/stat : 15835 (mxc) R 15833 15835 13601 0 -1 4194304 271 0 0 0 30 0 0 0 19 0 1 0 259216036 1662976 254 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134519967 0 0 4096 0 0 0 0 17 1 0 0
/proc/15835/statm: 406 254 67 122 0 280 0
Current children cumulated CPU time (s) 0.3
Current children cumulated vsize (KiB) 1624

[startup+0.702084 s]
/proc/loadavg: 1.80 1.45 1.17 3/77 15835
/proc/meminfo: memFree=1630704/2055920 swapFree=4156360/4192956
[pid=15835] ppid=15833 vsize=1752 CPUtime=0.7
/proc/15835/stat : 15835 (mxc) R 15833 15835 13601 0 -1 4194304 298 0 0 0 70 0 0 0 22 0 1 0 259216036 1794048 281 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134519215 0 0 4096 0 0 0 0 17 1 0 0
/proc/15835/statm: 438 281 67 122 0 312 0
Current children cumulated CPU time (s) 0.7
Current children cumulated vsize (KiB) 1752

[startup+1.50117 s]
/proc/loadavg: 1.80 1.45 1.17 2/78 15836
/proc/meminfo: memFree=1629736/2055920 swapFree=4156360/4192956
[pid=15835] ppid=15833 vsize=1752 CPUtime=1.49
/proc/15835/stat : 15835 (mxc) R 15833 15835 13601 0 -1 4194304 328 0 0 0 149 0 0 0 25 0 1 0 259216036 1794048 311 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134519232 0 0 4096 0 0 0 0 17 1 0 0
/proc/15835/statm: 438 311 67 122 0 312 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 1752

[startup+3.10134 s]
/proc/loadavg: 1.80 1.45 1.17 2/78 15836
/proc/meminfo: memFree=1629480/2055920 swapFree=4156360/4192956
[pid=15835] ppid=15833 vsize=1884 CPUtime=3.09
/proc/15835/stat : 15835 (mxc) R 15833 15835 13601 0 -1 4194304 357 0 0 0 309 0 0 0 25 0 1 0 259216036 1929216 340 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134519311 0 0 4096 0 0 0 0 17 1 0 0
/proc/15835/statm: 471 340 67 122 0 345 0
Current children cumulated CPU time (s) 3.09
Current children cumulated vsize (KiB) 1884

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

[startup+3.90143 s]
/proc/loadavg: 1.80 1.45 1.17 2/78 15836
/proc/meminfo: memFree=1629416/2055920 swapFree=4156360/4192956
[pid=15835] ppid=15833 vsize=2012 CPUtime=3.89
/proc/15835/stat : 15835 (mxc) R 15833 15835 13601 0 -1 4194304 365 0 0 0 389 0 0 0 25 0 1 0 259216036 2060288 348 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134519215 0 0 4096 0 0 0 0 17 1 0 0
/proc/15835/statm: 503 348 67 122 0 377 0
Current children cumulated CPU time (s) 3.89
Current children cumulated vsize (KiB) 2012

[startup+4.30147 s]
/proc/loadavg: 1.74 1.44 1.17 2/78 15836
/proc/meminfo: memFree=1629352/2055920 swapFree=4156360/4192956
[pid=15835] ppid=15833 vsize=2012 CPUtime=4.3
/proc/15835/stat : 15835 (mxc) R 15833 15835 13601 0 -1 4194304 371 0 0 0 430 0 0 0 25 0 1 0 259216036 2060288 354 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134519215 0 0 4096 0 0 0 0 17 1 0 0
/proc/15835/statm: 503 354 67 122 0 377 0
Current children cumulated CPU time (s) 4.3
Current children cumulated vsize (KiB) 2012

[startup+4.50149 s]
/proc/loadavg: 1.74 1.44 1.17 2/78 15836
/proc/meminfo: memFree=1629352/2055920 swapFree=4156360/4192956
[pid=15835] ppid=15833 vsize=2012 CPUtime=4.49
/proc/15835/stat : 15835 (mxc) R 15833 15835 13601 0 -1 4194304 373 0 0 0 449 0 0 0 25 0 1 0 259216036 2060288 356 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134530053 0 0 4096 0 0 0 0 17 1 0 0
/proc/15835/statm: 503 356 67 122 0 377 0
Current children cumulated CPU time (s) 4.49
Current children cumulated vsize (KiB) 2012

[startup+4.6015 s]
/proc/loadavg: 1.74 1.44 1.17 2/78 15836
/proc/meminfo: memFree=1629352/2055920 swapFree=4156360/4192956
[pid=15835] ppid=15833 vsize=2012 CPUtime=4.59
/proc/15835/stat : 15835 (mxc) R 15833 15835 13601 0 -1 4194304 373 0 0 0 459 0 0 0 25 0 1 0 259216036 2060288 356 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134519243 0 0 4096 0 0 0 0 17 1 0 0
/proc/15835/statm: 503 356 67 122 0 377 0
Current children cumulated CPU time (s) 4.59
Current children cumulated vsize (KiB) 2012

Child status: 20
Real time (s): 4.6714
CPU time (s): 4.65529
CPU user time (s): 4.65529
CPU system time (s): 0
CPU usage (%): 99.6553
Max. virtual memory (cumulated for all children) (KiB): 2012

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 4.65529
system time used= 0
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= 3

runsolver used 0.005999 second user time and 0.016997 second system time

The end

Launcher Data (download as text)

Begin job on node7 on Sun Apr 29 07:29:44 UTC 2007

IDJOB= 427098
IDBENCH= 20335
IDSOLVER= 174
FILE ID= node7/427098-1177831784

PBS_JOBID= 4718266

Free space on /tmp= 66564 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/427098-1177831784/mxc /tmp/evaluation/427098-1177831784/instance-427098-1177831784.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node7/watcher-427098-1177831784 -o ROOT/results/node7/solver-427098-1177831784 -C 5000 -W 7500 -M 1800 --output-limit 1,15  /tmp/evaluation/427098-1177831784/mxc /tmp/evaluation/427098-1177831784/instance-427098-1177831784.cnf            

META MD5SUM SOLVER= d41d8cd98f00b204e9800998ecf8427e
MD5SUM BENCH=  a72030f9b5b8bc8b27629e6299239dd6

RANDOM SEED= 303485169

TIME LIMIT= 5000 seconds
MEMORY LIMIT= 1800 MiB

Linux node7.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:       1631112 kB
Buffers:         43672 kB
Cached:         305956 kB
SwapCached:      17164 kB
Active:         231560 kB
Inactive:       143844 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1631112 kB
SwapTotal:     4192956 kB
SwapFree:      4156360 kB
Dirty:             672 kB
Writeback:           0 kB
Mapped:          31388 kB
Slab:            34812 kB
Committed_AS:  8978472 kB
PageTables:       1864 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= 66564 MiB

End job on node7 on Sun Apr 29 07:29:49 UTC 2007