Trace number 316263

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 1.54476 1.5582

General information on the benchmark

Namecrafted/spence/
medium/s57-100.cnf
MD5SUM4dc4c11d420a4a03c2a3fdf77861be5d
Bench CategoryCRAFTED (crafted instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.703892
Satisfiable
(Un)Satisfiability was proved
Number of variables57
Number of clauses124
Sum of the clauses size372
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 3124
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data (download as text)

1.49/1.55	c MXC attempting /tmp/evaluation/316263-1172666492/instance-316263-1172666492.cnf
1.49/1.55	c 0 assignments made, starting to guess now
1.49/1.55	c ===================================[MXC]=====================================
1.49/1.55	c | Conflicts |     ORIGINAL     |             LEARNT              | Progress |
1.49/1.55	c |           | Clauses Literals |  Limit Clauses Literals  Lit/Cl |          |
1.49/1.55	c =============================================================================
1.49/1.55	c |         0 |     124      372 |    1000       0       0     nan |  0.000 % |
1.49/1.55	c |       102 |     124      372 |    1100     102    1089    10.7 |  0.000 % |
1.49/1.55	c |       252 |     124      372 |    1210     252    2766    11.0 |  0.000 % |
1.49/1.55	c |       479 |     124      372 |    1331     479    5384    11.2 |  0.000 % |
1.49/1.55	c |       819 |     124      372 |    1464     819    9557    11.7 |  0.000 % |
1.49/1.55	c |      1325 |     124      372 |    1610    1325   15598    11.8 |  0.000 % |
1.49/1.55	c |      2084 |     124      372 |    1771    1278   13670    10.7 |  0.000 % |
1.49/1.55	c |      3223 |     124      372 |    1948    1531   16115    10.5 |  0.000 % |
1.49/1.55	c |      4931 |     124      372 |    2143    1290   12071     9.4 |  0.000 % |
1.49/1.55	c |      7494 |     124      372 |    2357    1710   15083     8.8 |  0.000 % |
1.49/1.55	c |     11338 |     124      372 |    2593    2017   18370     9.1 |  0.000 % |
1.49/1.55	c |     17105 |     124      372 |    2853    1300   11419     8.8 |  0.000 % |
1.49/1.55	c |     25754 |     124      372 |    3138    2817   25046     8.9 |  0.000 % |
1.49/1.55	c |     38729 |     118      354 |    3452    1658   14966     9.0 |  1.754 % |
1.49/1.55	c |     58191 |     106      318 |    3797    2007   15591     7.8 |  5.263 % |
1.49/1.55	c 1.540s elapsed
1.49/1.55	c restarts: 14
1.49/1.55	c decisions: 79006
1.49/1.55	c propagations: 1185336
1.49/1.55	c conflicts: 63706
1.49/1.55	s UNSATISFIABLE

Verifier Data (download as text)

No possible verification on an UNSAT instance

Watcher Data (download as text)

runsolver version 3.2.1 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node3/watcher-316263-1172666492 -o ROOT/results/node3/solver-316263-1172666492 -C 1200 -W 2400 -M 1800 --output-limit 1,15 /tmp/evaluation/316263-1172666492/mxc /tmp/evaluation/316263-1172666492/instance-316263-1172666492.cnf 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1230 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 2400 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: 0.95 1.01 0.99 3/77 10611
/proc/meminfo: memFree=1109224/2055920 swapFree=4191880/4192956
[pid=10611] ppid=10609 vsize=932 CPUtime=0
/proc/10611/stat : 10611 (mxc) R 10609 10611 10423 0 -1 4194304 96 0 0 0 0 0 0 0 18 0 1 0 286604066 954368 80 18446744073709551615 134512640 135013041 4294956640 18446744073709551615 134688363 0 0 4096 0 0 0 0 17 1 0 0
/proc/10611/statm: 233 80 59 122 0 107 0

[startup+0.0692469 s]
/proc/loadavg: 0.95 1.01 0.99 3/77 10611
/proc/meminfo: memFree=1109224/2055920 swapFree=4191880/4192956
[pid=10611] ppid=10609 vsize=1072 CPUtime=0.06
/proc/10611/stat : 10611 (mxc) R 10609 10611 10423 0 -1 4194304 145 0 0 0 6 0 0 0 18 0 1 0 286604066 1097728 127 18446744073709551615 134512640 135013041 4294956640 18446744073709551615 134688363 0 0 4096 0 0 0 0 17 1 0 0
/proc/10611/statm: 268 127 67 122 0 142 0
Current children cumulated CPU time (s) 0.06
Current children cumulated vsize (KiB) 1072

[startup+0.102249 s]
/proc/loadavg: 0.95 1.01 0.99 3/77 10611
/proc/meminfo: memFree=1109224/2055920 swapFree=4191880/4192956
[pid=10611] ppid=10609 vsize=1072 CPUtime=0.1
/proc/10611/stat : 10611 (mxc) R 10609 10611 10423 0 -1 4194304 148 0 0 0 10 0 0 0 18 0 1 0 286604066 1097728 130 18446744073709551615 134512640 135013041 4294956640 18446744073709551615 134519215 0 0 4096 0 0 0 0 17 1 0 0
/proc/10611/statm: 268 130 67 122 0 142 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 1072

[startup+0.301266 s]
/proc/loadavg: 0.95 1.01 0.99 3/77 10611
/proc/meminfo: memFree=1109224/2055920 swapFree=4191880/4192956
[pid=10611] ppid=10609 vsize=1192 CPUtime=0.29
/proc/10611/stat : 10611 (mxc) R 10609 10611 10423 0 -1 4194304 168 0 0 0 29 0 0 0 19 0 1 0 286604066 1220608 150 18446744073709551615 134512640 135013041 4294956640 18446744073709551615 134529869 0 0 4096 0 0 0 0 17 1 0 0
/proc/10611/statm: 298 150 67 122 0 172 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 1192

[startup+0.701298 s]
/proc/loadavg: 0.95 1.01 0.99 3/77 10611
/proc/meminfo: memFree=1109224/2055920 swapFree=4191880/4192956
[pid=10611] ppid=10609 vsize=1192 CPUtime=0.69
/proc/10611/stat : 10611 (mxc) R 10609 10611 10423 0 -1 4194304 188 0 0 0 69 0 0 0 22 0 1 0 286604066 1220608 170 18446744073709551615 134512640 135013041 4294956640 18446744073709551615 134519215 0 0 4096 0 0 0 0 17 1 0 0
/proc/10611/statm: 298 170 67 122 0 172 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 1192

[startup+1.50136 s]
/proc/loadavg: 0.95 1.01 0.99 2/78 10612
/proc/meminfo: memFree=1108704/2055920 swapFree=4191880/4192956
[pid=10611] ppid=10609 vsize=1320 CPUtime=1.49
/proc/10611/stat : 10611 (mxc) R 10609 10611 10423 0 -1 4194304 208 0 0 0 149 0 0 0 25 0 1 0 286604066 1351680 190 18446744073709551615 134512640 135013041 4294956640 18446744073709551615 134534732 0 0 4096 0 0 0 0 17 1 0 0
/proc/10611/statm: 330 190 67 122 0 204 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 1320

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

Child status: 20
Real time (s): 1.5582
CPU time (s): 1.54476
CPU user time (s): 1.54277
CPU system time (s): 0.001999
CPU usage (%): 99.1376
Max. virtual memory (cumulated for all children) (KiB): 1320

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 1.54276
system time used= 0.001999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 209
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 0.000999 second user time and 0.009998 second system time

The end

Launcher Data (download as text)

Begin job on node3 on Wed Feb 28 12:41:32 UTC 2007

IDJOB= 316263
IDBENCH= 20437
IDSOLVER= 107
FILE ID= node3/316263-1172666492

PBS_JOBID= 3980963

Free space on /tmp= 66536 MiB

SOLVER NAME= MXC 2007-02-08
BENCH NAME= HOME/pub/bench/SAT07/crafted/spence/medium/s57-100.cnf
COMMAND LINE= /tmp/evaluation/316263-1172666492/mxc /tmp/evaluation/316263-1172666492/instance-316263-1172666492.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node3/watcher-316263-1172666492 -o ROOT/results/node3/solver-316263-1172666492 -C 1200 -W 2400 -M 1800 --output-limit 1,15  /tmp/evaluation/316263-1172666492/mxc /tmp/evaluation/316263-1172666492/instance-316263-1172666492.cnf            

META MD5SUM SOLVER= fd459248d3e92e664505cc2f0f683bf4
MD5SUM BENCH=  4dc4c11d420a4a03c2a3fdf77861be5d

RANDOM SEED= 353292023

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node3.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		: 3000.241
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		: 3000.241
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:       1109632 kB
Buffers:         45536 kB
Cached:         777224 kB
SwapCached:        448 kB
Active:         291912 kB
Inactive:       584920 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1109632 kB
SwapTotal:     4192956 kB
SwapFree:      4191880 kB
Dirty:             732 kB
Writeback:           0 kB
Mapped:          64016 kB
Slab:            55120 kB
Committed_AS:  1269188 kB
PageTables:       1656 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= 66536 MiB

End job on node3 on Wed Feb 28 12:41:34 UTC 2007