Trace number 427941

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
minimarch 2007-04-26 (fixed)UNSAT 0.571912 0.573331

General information on the benchmark

Namerandom/2+p/p0.7/v3500/
unif2p-p0.7-v3500-c9345-S977957999-02-UNSAT.cnf
MD5SUM18f840e49f7b6014abf7c03df24e3402
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.369942
Satisfiable
(Un)Satisfiability was proved
Number of variables3498
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)

0.00/0.00	This is MiniMarch 1.1, a modified version of MiniSat 2.0 beta
0.00/0.00	WARNING: for repeatability, setting FPU to use double precision
0.00/0.00	============================[ Problem Statistics ]=============================
0.00/0.00	|                                                                             |
0.00/0.00	|  Number of variables:  3500                                                 |
0.00/0.00	|  Number of clauses:    9344                                                 |
0.00/0.02	|  Parsing time:         0.02         s                                       |
0.04/0.06	============================[ Search Statistics ]==============================
0.04/0.06	| Conflicts |          ORIGINAL         |          LEARNT          | Progress |
0.04/0.06	|           |    Vars  Clauses Literals |    Limit  Clauses Lit/Cl |          |
0.04/0.06	===============================================================================
0.04/0.06	|         0 |    2499     7926    23874 |     2642        0    nan |  0.000 % |
0.04/0.07	|       100 |    2499     7926    23874 |     2906      100     18 |  0.000 % |
0.04/0.09	|       250 |    2499     7926    23874 |     3196      250     20 |  0.000 % |
0.09/0.11	|       477 |    2499     7926    23874 |     3516      477     18 |  0.000 % |
0.09/0.15	|       814 |    2499     7926    23874 |     3868      814     19 |  0.000 % |
0.19/0.21	|      1321 |    2499     7926    23874 |     4254     1321     19 |  0.000 % |
0.29/0.31	|      2081 |    2499     7926    23874 |     4680     2081     19 |  0.000 % |
0.39/0.48	|      3221 |    2493     7892    23769 |     5148     2003     18 |  0.171 % |
0.49/0.57	===============================================================================
0.49/0.57	lookaheads            : 108
0.49/0.57	variable balance      : 0.00
0.49/0.57	restarts              : 8
0.49/0.57	conflicts             : 3843           (6767 /sec)
0.49/0.57	decisions             : 5239           (1.68 % random) (9225 /sec)
0.49/0.57	decision = positive   : 2658
0.49/0.57	decision = negative   : 2581
0.49/0.57	propagations          : 1113919        (1961425 /sec)
0.49/0.57	conflict literals     : 70209          (41.58 % deleted)
0.49/0.57	Memory used           : 2.96 MB
0.49/0.57	CPU time              : 0.567913 s
0.49/0.57	
0.49/0.57	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/node21/watcher-427941-1177689825 -o ROOT/results/node21/solver-427941-1177689825 -C 1200 -W 2400 -M 1800 --output-limit 1,15 /tmp/evaluation/427941-1177689825/minimarch_fixed /tmp/evaluation/427941-1177689825/instance-427941-1177689825.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: 1.00 1.00 1.00 3/77 20414
/proc/meminfo: memFree=1758328/2055920 swapFree=4155628/4192956
[pid=20414] ppid=20412 vsize=2296 CPUtime=0
/proc/20414/stat : 20414 (minimarch_fixed) R 20412 20414 19342 0 -1 4194304 254 0 0 0 0 0 0 0 18 0 1 0 216899799 2351104 239 18446744073709551615 134512640 135054336 4294956656 18446744073709551615 134691888 0 0 4096 3 0 0 0 17 1 0 0
/proc/20414/statm: 574 240 51 132 0 439 0

[startup+0.0456481 s]
/proc/loadavg: 1.00 1.00 1.00 3/77 20414
/proc/meminfo: memFree=1758328/2055920 swapFree=4155628/4192956
[pid=20414] ppid=20412 vsize=3032 CPUtime=0.04
/proc/20414/stat : 20414 (minimarch_fixed) R 20412 20414 19342 0 -1 4194304 456 0 0 0 4 0 0 0 18 0 1 0 216899799 3104768 441 18446744073709551615 134512640 135054336 4294956656 18446744073709551615 134535979 0 0 4096 3 0 0 0 17 1 0 0
/proc/20414/statm: 758 441 63 132 0 623 0
Current children cumulated CPU time (s) 0.04
Current children cumulated vsize (KiB) 3032

[startup+0.101654 s]
/proc/loadavg: 1.00 1.00 1.00 3/77 20414
/proc/meminfo: memFree=1758328/2055920 swapFree=4155628/4192956
[pid=20414] ppid=20412 vsize=3032 CPUtime=0.09
/proc/20414/stat : 20414 (minimarch_fixed) R 20412 20414 19342 0 -1 4194304 468 0 0 0 9 0 0 0 18 0 1 0 216899799 3104768 453 18446744073709551615 134512640 135054336 4294956656 18446744073709551615 134551227 0 0 4096 3 0 0 0 17 1 0 0
/proc/20414/statm: 758 453 67 132 0 623 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 3032

[startup+0.301676 s]
/proc/loadavg: 1.00 1.00 1.00 3/77 20414
/proc/meminfo: memFree=1758328/2055920 swapFree=4155628/4192956
[pid=20414] ppid=20412 vsize=3032 CPUtime=0.29
/proc/20414/stat : 20414 (minimarch_fixed) R 20412 20414 19342 0 -1 4194304 468 0 0 0 29 0 0 0 19 0 1 0 216899799 3104768 453 18446744073709551615 134512640 135054336 4294956656 18446744073709551615 134551227 0 0 4096 3 0 0 0 17 1 0 0
/proc/20414/statm: 758 453 67 132 0 623 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 3032

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

[startup+0.501697 s]
/proc/loadavg: 1.00 1.00 1.00 3/77 20414
/proc/meminfo: memFree=1758328/2055920 swapFree=4155628/4192956
[pid=20414] ppid=20412 vsize=3032 CPUtime=0.49
/proc/20414/stat : 20414 (minimarch_fixed) R 20412 20414 19342 0 -1 4194304 468 0 0 0 49 0 0 0 21 0 1 0 216899799 3104768 453 18446744073709551615 134512640 135054336 4294956656 18446744073709551615 134551719 0 0 4096 3 0 0 0 17 1 0 0
/proc/20414/statm: 758 453 67 132 0 623 0
Current children cumulated CPU time (s) 0.49
Current children cumulated vsize (KiB) 3032

Child status: 20
Real time (s): 0.573331
CPU time (s): 0.571912
CPU user time (s): 0.567913
CPU system time (s): 0.003999
CPU usage (%): 99.7525
Max. virtual memory (cumulated for all children) (KiB): 3032

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.567913
system time used= 0.003999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 475
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= 8
involuntary context switches= 11

runsolver used 0.001999 second user time and 0.007998 second system time

The end

Launcher Data (download as text)

Begin job on node21 on Fri Apr 27 16:03:45 UTC 2007

IDJOB= 427941
IDBENCH= 20227
IDSOLVER= 198
FILE ID= node21/427941-1177689825

PBS_JOBID= 4698639

Free space on /tmp= 66450 MiB

SOLVER NAME= minimarch 2007-04-26 (fixed)
BENCH NAME= HOME/pub/bench/SAT07/random/2+p/p0.7/v3500/unif2p-p0.7-v3500-c9345-S977957999-02-UNSAT.cnf
COMMAND LINE= /tmp/evaluation/427941-1177689825/minimarch_fixed /tmp/evaluation/427941-1177689825/instance-427941-1177689825.cnf
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node21/watcher-427941-1177689825 -o ROOT/results/node21/solver-427941-1177689825 -C 1200 -W 2400 -M 1800 --output-limit 1,15  /tmp/evaluation/427941-1177689825/minimarch_fixed /tmp/evaluation/427941-1177689825/instance-427941-1177689825.cnf

META MD5SUM SOLVER= 08d902191c06ef4f82d57c2f2b6a82c2
MD5SUM BENCH=  18f840e49f7b6014abf7c03df24e3402

RANDOM SEED= 655468880

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node21.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		: 3000.232
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:       1758808 kB
Buffers:         45724 kB
Cached:         161600 kB
SwapCached:      15988 kB
Active:         161888 kB
Inactive:        69644 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1758808 kB
SwapTotal:     4192956 kB
SwapFree:      4155628 kB
Dirty:            3172 kB
Writeback:           0 kB
Mapped:          30380 kB
Slab:            51124 kB
Committed_AS:  1867792 kB
PageTables:       1788 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= 66450 MiB

End job on node21 on Fri Apr 27 16:03:46 UTC 2007