Trace number 308275

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
SAT7 2007-02-08UNSAT 0.742886 0.743325

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)

0.00/0.04	c Starting solver ...
0.00/0.06	c Restarting after 101 conflicts
0.00/0.08	c Restarting after 252 conflicts
0.10/0.13	c Restarting after 480 conflicts
0.20/0.20	c Restarting after 817 conflicts
0.30/0.32	c Restarting after 1323 conflicts
0.41/0.49	c Restarting after 2083 conflicts
0.71/0.74	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/node61/watcher-308275-1172518206 -o ROOT/results/node61/solver-308275-1172518206 -C 1200 -M 1800 --output-limit 1,15 /tmp/evaluation/308275-1172518206/sat7_bin /tmp/evaluation/308275-1172518206/instance-308275-1172518206.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: 1.16 1.07 1.02 3/64 4013
/proc/meminfo: memFree=1916696/2055920 swapFree=4180412/4192956
[pid=4013] ppid=4011 vsize=1368 CPUtime=0
/proc/4013/stat : 4013 (sat7_bin) R 4011 4013 3383 0 -1 4194304 222 0 0 0 0 0 0 0 18 0 1 0 271777587 1400832 205 18446744073709551615 134512640 135417445 4294956704 18446744073709551615 134518450 0 0 4096 0 0 0 0 17 1 0 0
/proc/4013/statm: 342 205 87 220 0 119 0

[startup+0.107367 s]
/proc/loadavg: 1.16 1.07 1.02 3/64 4013
/proc/meminfo: memFree=1916696/2055920 swapFree=4180412/4192956
[pid=4013] ppid=4011 vsize=2292 CPUtime=0.1
/proc/4013/stat : 4013 (sat7_bin) R 4011 4013 3383 0 -1 4194304 411 0 0 0 10 0 0 0 18 0 1 0 271777587 2347008 394 18446744073709551615 134512640 135417445 4294956704 18446744073709551615 134529366 0 0 4096 0 0 0 0 17 1 0 0
/proc/4013/statm: 573 394 95 220 0 350 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 2292

[startup+0.515369 s]
/proc/loadavg: 1.16 1.07 1.02 3/64 4013
/proc/meminfo: memFree=1916696/2055920 swapFree=4180412/4192956
[pid=4013] ppid=4011 vsize=3320 CPUtime=0.51
/proc/4013/stat : 4013 (sat7_bin) R 4011 4013 3383 0 -1 4194304 463 0 0 0 51 0 0 0 21 0 1 0 271777587 3399680 446 18446744073709551615 134512640 135417445 4294956704 18446744073709551615 134528658 0 0 4096 0 0 0 0 17 1 0 0
/proc/4013/statm: 830 446 95 220 0 607 0
Current children cumulated CPU time (s) 0.51
Current children cumulated vsize (KiB) 3320

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

[startup+0.617379 s]
/proc/loadavg: 1.16 1.07 1.02 3/64 4013
/proc/meminfo: memFree=1916696/2055920 swapFree=4180412/4192956
[pid=4013] ppid=4011 vsize=3320 CPUtime=0.61
/proc/4013/stat : 4013 (sat7_bin) R 4011 4013 3383 0 -1 4194304 478 0 0 0 61 0 0 0 22 0 1 0 271777587 3399680 461 18446744073709551615 134512640 135417445 4294956704 18446744073709551615 134542721 0 0 4096 0 0 0 0 17 1 0 0
/proc/4013/statm: 830 461 95 220 0 607 0
Current children cumulated CPU time (s) 0.61
Current children cumulated vsize (KiB) 3320

[startup+0.719389 s]
/proc/loadavg: 1.16 1.07 1.02 3/64 4013
/proc/meminfo: memFree=1916696/2055920 swapFree=4180412/4192956
[pid=4013] ppid=4011 vsize=3320 CPUtime=0.71
/proc/4013/stat : 4013 (sat7_bin) R 4011 4013 3383 0 -1 4194304 488 0 0 0 71 0 0 0 23 0 1 0 271777587 3399680 471 18446744073709551615 134512640 135417445 4294956704 18446744073709551615 134536262 0 0 4096 0 0 0 0 17 1 0 0
/proc/4013/statm: 830 471 95 220 0 607 0
Current children cumulated CPU time (s) 0.71
Current children cumulated vsize (KiB) 3320

Child status: 20
Real time (s): 0.743325
CPU time (s): 0.742886
CPU user time (s): 0.739887
CPU system time (s): 0.002999
CPU usage (%): 99.941
Max. virtual memory (cumulated for all children) (KiB): 3320

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.739887
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= 488
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= 1

runsolver used 0.003999 second user time and 0.003999 second system time

The end

Launcher Data (download as text)

Begin job on node61 on Mon Feb 26 19:30:06 UTC 2007

IDJOB= 308275
IDBENCH= 20227
IDSOLVER= 101
FILE ID= node61/308275-1172518206

PBS_JOBID= 3971775

Free space on /tmp= 66558 MiB

SOLVER NAME= SAT7 2007-02-08
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/308275-1172518206/sat7_bin /tmp/evaluation/308275-1172518206/instance-308275-1172518206.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node61/watcher-308275-1172518206 -o ROOT/results/node61/solver-308275-1172518206 -C 1200 -M 1800 --output-limit 1,15  /tmp/evaluation/308275-1172518206/sat7_bin /tmp/evaluation/308275-1172518206/instance-308275-1172518206.cnf            

META MD5SUM SOLVER= 499b432f7af158d8586c91b2e490220f
MD5SUM BENCH=  18f840e49f7b6014abf7c03df24e3402

RANDOM SEED= 538378950

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node61.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		: 3000.216
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		: 3000.216
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:       1917232 kB
Buffers:         20676 kB
Cached:          78160 kB
SwapCached:       6632 kB
Active:          24664 kB
Inactive:        86860 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1917232 kB
SwapTotal:     4192956 kB
SwapFree:      4180412 kB
Dirty:            1356 kB
Writeback:           0 kB
Mapped:          15328 kB
Slab:            13288 kB
Committed_AS:   707116 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= 66558 MiB

End job on node61 on Mon Feb 26 19:30:08 UTC 2007