Trace number 1731995

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. The first timestamp (if present) is estimated CPU time. The last timestamp is wall clock 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 2009-03-10UNSAT 1.10183 1.10319

General information on the benchmark

NameCRAFTED/sgen/unsat/
sgen1-unsat-61-100.cnf
MD5SUM43b8e7efe061e21db6b4c047915ae87c
Bench CategoryCRAFTED (crafted instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.959853
Satisfiable
(Un)Satisfiability was proved
Number of variables61
Number of clauses132
Sum of the clauses size396
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 3132
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

1.00/1.10	c starting MXC with:
1.00/1.10	c cnf_path = HOME/instance-1731995-1240776854.cnf
1.00/1.10	c restart_strategy = auto
1.00/1.10	c sign_strategy = cached
1.00/1.10	c use_preprocessing = -1
1.00/1.10	c output_implicant = 1
1.00/1.10	c timeout_seconds = 0
1.00/1.10	c running SatELite... done
1.00/1.10	c 1 vars eliminated
1.00/1.10	c received 0 units and 132 clauses from SatELite
1.00/1.10	c 0 assignments made, starting to guess now
1.00/1.10	c ===================================[MXC]=====================================
1.00/1.10	c | Conflicts |                Clause Statistics                   |   Vars   |
1.00/1.10	c |           |    CARD     BIN      O3+      L3+   L3+Lim  Lit/CL |          |
1.00/1.10	c =============================================================================
1.00/1.10	c |         0 |       0       0      132        0        0     nan |       61 |
1.00/1.10	c |       100 |       0       0      132      100     1050    11.5 |       61 |
1.00/1.10	c |       210 |       0       0      132      210     1105    12.0 |       61 |
1.00/1.10	c |       441 |       0       0      132      441     1220    13.1 |       61 |
1.00/1.10	c |       805 |       0       0      132      805     1402    12.8 |       61 |
1.00/1.10	c |      1315 |       0       0      132     1315     1609    12.8 |       61 |
1.00/1.10	c |      1986 |       0       0      132     1138     1754    11.6 |       61 |
1.00/1.10	c |      2834 |       0       0      132     1046     1894    11.9 |       61 |
1.00/1.10	c |      3876 |       0       0      132     1078     2031    11.6 |       61 |
1.00/1.10	c |      5132 |       0       0      132     1262     2163    10.2 |       61 |
1.00/1.10	c |      6623 |       0       0      132     1628     2292     9.5 |       61 |
1.00/1.10	c |      8373 |       0       0      132     2204     2419     9.3 |       61 |
1.00/1.10	c |     10408 |       0       0      132     1765     2543     8.5 |       61 |
1.00/1.10	c |     12756 |       0       0      132     1492     2665     8.7 |       61 |
1.00/1.10	c |     15449 |       0       1      132     1431     2786     8.3 |       61 |
1.00/1.10	c |     18521 |       0       1      132     1631     2906     8.8 |       61 |
1.00/1.10	c |     22010 |       0       2      132     2139     3025     8.4 |       61 |
1.00/1.10	c |     25958 |       0       3      132     3009     3144     8.3 |       61 |
1.00/1.10	c |     30411 |       0      13      132     2664     3262     8.4 |       60 |
1.00/1.10	c |     35419 |       0      13      132     2697     3381     8.5 |       60 |
1.00/1.10	c |     41038 |       0      15      132     3166     3499     8.4 |       60 |
1.00/1.10	c |     47329 |       0      25      132     2332     3618     9.0 |       59 |
1.00/1.10	c |     54360 |       0      36      132     1973     3737     7.1 |       58 |
1.00/1.10	c |     57439 |       0      89      132     3103     3786     6.5 |       20 |
1.00/1.10	c ----- stats for thread 0 -----
1.00/1.10	c restarts: 8
1.00/1.10	c decisions: 76922
1.00/1.10	c propagations: 1008502
1.00/1.10	c conflicts: 57439
1.00/1.10	c 1.102s elapsed
1.00/1.10	s UNSATISFIABLE

Verifier Data 

No possible verification on an UNSAT instance

Watcher Data 

runsolver version 3.2.9 (svn:492) (c) roussel@cril.univ-artois.fr

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-1731995-1240776854/watcher-1731995-1240776854 -o /tmp/evaluation-result-1731995-1240776854/solver-1731995-1240776854 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/mxc-sat09 -i HOME/instance-1731995-1240776854.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): 1800 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: 0.91 0.97 0.99 3/64 27502
/proc/meminfo: memFree=1840352/2055920 swapFree=4180832/4192956
[pid=27502] ppid=27500 vsize=844 CPUtime=0
/proc/27502/stat : 27502 (mxc-sat09) R 27500 27502 27465 0 -1 4194304 117 0 0 0 0 0 0 0 18 0 1 0 105713575 864256 103 1992294400 134512640 135192793 4294956224 18446744073709551615 134750438 0 0 4096 0 0 0 0 17 1 0 0
/proc/27502/statm: 211 103 71 166 0 42 0

[startup+0.051847 s]
/proc/loadavg: 0.91 0.97 0.99 3/64 27502
/proc/meminfo: memFree=1840352/2055920 swapFree=4180832/4192956
[pid=27502] ppid=27500 vsize=1240 CPUtime=0.04
/proc/27502/stat : 27502 (mxc-sat09) R 27500 27502 27465 0 -1 4194304 194 0 0 0 4 0 0 0 18 0 1 0 105713575 1269760 180 1992294400 134512640 135192793 4294956224 18446744073709551615 134550875 0 0 4096 0 0 0 0 17 1 0 0
/proc/27502/statm: 310 180 72 166 0 141 0
Current children cumulated CPU time (s) 0.04
Current children cumulated vsize (KiB) 1240

[startup+0.101852 s]
/proc/loadavg: 0.91 0.97 0.99 3/64 27502
/proc/meminfo: memFree=1840352/2055920 swapFree=4180832/4192956
[pid=27502] ppid=27500 vsize=1240 CPUtime=0.09
/proc/27502/stat : 27502 (mxc-sat09) R 27500 27502 27465 0 -1 4194304 218 0 0 0 9 0 0 0 18 0 1 0 105713575 1269760 204 1992294400 134512640 135192793 4294956224 18446744073709551615 134552591 0 0 4096 0 0 0 0 17 1 0 0
/proc/27502/statm: 310 204 72 166 0 141 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 1240

[startup+0.301874 s]
/proc/loadavg: 0.91 0.97 0.99 3/64 27502
/proc/meminfo: memFree=1840352/2055920 swapFree=4180832/4192956
[pid=27502] ppid=27500 vsize=1508 CPUtime=0.29
/proc/27502/stat : 27502 (mxc-sat09) R 27500 27502 27465 0 -1 4194304 274 0 0 0 29 0 0 0 19 0 1 0 105713575 1544192 260 1992294400 134512640 135192793 4294956224 18446744073709551615 134534206 0 0 4096 0 0 0 0 17 1 0 0
/proc/27502/statm: 377 260 72 166 0 208 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 1508

[startup+0.701918 s]
/proc/loadavg: 0.91 0.97 0.99 3/64 27502
/proc/meminfo: memFree=1840352/2055920 swapFree=4180832/4192956
[pid=27502] ppid=27500 vsize=1652 CPUtime=0.69
/proc/27502/stat : 27502 (mxc-sat09) R 27500 27502 27465 0 -1 4194304 325 0 0 0 69 0 0 0 22 0 1 0 105713575 1691648 311 1992294400 134512640 135192793 4294956224 18446744073709551615 134549774 0 0 4096 0 0 0 0 17 1 0 0
/proc/27502/statm: 413 311 72 166 0 244 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 1652

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

[startup+0.90194 s]
/proc/loadavg: 0.91 0.97 0.99 3/64 27502
/proc/meminfo: memFree=1840352/2055920 swapFree=4180832/4192956
[pid=27502] ppid=27500 vsize=1784 CPUtime=0.89
/proc/27502/stat : 27502 (mxc-sat09) R 27500 27502 27465 0 -1 4194304 338 0 0 0 89 0 0 0 24 0 1 0 105713575 1826816 324 1992294400 134512640 135192793 4294956224 18446744073709551615 134534317 0 0 4096 0 0 0 0 17 1 0 0
/proc/27502/statm: 446 324 72 166 0 277 0
Current children cumulated CPU time (s) 0.89
Current children cumulated vsize (KiB) 1784

[startup+1.00195 s]
/proc/loadavg: 0.91 0.97 0.99 2/65 27503
/proc/meminfo: memFree=1839192/2055920 swapFree=4180832/4192956
[pid=27502] ppid=27500 vsize=1920 CPUtime=1
/proc/27502/stat : 27502 (mxc-sat09) R 27500 27502 27465 0 -1 4194304 361 0 0 0 100 0 0 0 25 0 1 0 105713575 1966080 347 1992294400 134512640 135192793 4294956224 18446744073709551615 134549692 0 0 4096 0 0 0 0 17 1 0 0
/proc/27502/statm: 480 347 72 166 0 311 0
Current children cumulated CPU time (s) 1
Current children cumulated vsize (KiB) 1920

Child status: 20
Real time (s): 1.10319
CPU time (s): 1.10183
CPU user time (s): 1.09983
CPU system time (s): 0.001999
CPU usage (%): 99.8769
Max. virtual memory (cumulated for all children) (KiB): 1920

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 1.09983
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= 368
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= 2
involuntary context switches= 2

runsolver used 0.008998 second user time and 0.006998 second system time

The end

Launcher Data 

Begin job on node42 at 2009-04-26 22:14:14
IDJOB=1731995
IDBENCH=71108
IDSOLVER=504
FILE ID=node42/1731995-1240776854
PBS_JOBID= 9187253
Free space on /tmp= 66328 MiB

SOLVER NAME= MXC 2009-03-10
BENCH NAME= SAT09/CRAFTED/sgen/unsat/sgen1-unsat-61-100.cnf
COMMAND LINE= HOME/mxc-sat09 -i BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1731995-1240776854/watcher-1731995-1240776854 -o /tmp/evaluation-result-1731995-1240776854/solver-1731995-1240776854 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/mxc-sat09 -i HOME/instance-1731995-1240776854.cnf

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB
MAX NB THREAD= 0

MD5SUM BENCH= 43b8e7efe061e21db6b4c047915ae87c
RANDOM SEED=1435778210

node42.alineos.net Linux 2.6.9-22.EL.rootsmp #1 SMP Mon Oct 3 08:59:52 CEST 2005

/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		: 3000.232
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		: 3000.232
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:       1840832 kB
Buffers:         16728 kB
Cached:         134684 kB
SwapCached:       5940 kB
Active:          59344 kB
Inactive:       100320 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1840832 kB
SwapTotal:     4192956 kB
SwapFree:      4180832 kB
Dirty:             756 kB
Writeback:           0 kB
Mapped:          13976 kB
Slab:            41472 kB
Committed_AS:   504104 kB
PageTables:       1388 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= 66328 MiB
End job on node42 at 2009-04-26 22:14:15