Trace number 3365577

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
SAT09 reference solver:precosat 236UNSAT 0.330948 0.331005

General information on the benchmark

NameAPPLICATIONS/bitverif/
minandmaxor/minandmaxor016.cnf
MD5SUM12a87f636ffe8e3dae243dd6ce90cac8
Bench CategoryAPPLICATION (applications instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.159975
Satisfiable
(Un)Satisfiability was proved
Number of variables4271
Number of clauses12620
Sum of the clauses size29444
Maximum clause length3
Minimum clause length1
Number of clauses of size 12
Number of clauses of size 28412
Number of clauses of size 34206
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

0.00/0.00	c PicoSATLight Version 236 3e7a3f8825c0b9e241f38a63fee5517540b2feca
0.00/0.00	c Copyright (C) 2009, Armin Biere, JKU, Linz, Austria.  All rights reserved.
0.00/0.00	c Released on Sun Mar 22 10:16:26 CET 2009
0.00/0.00	c Compiled on Tue Mar 24 21:24:39 CET 2009
0.00/0.00	c g++ (GCC) 4.3.2 20081105 (Red Hat 4.3.2-7)
0.00/0.00	c -O3 -m32 -static -Wall -Wextra -DNDEBUG -DNLOGPRECO -DNSTATSPRECO
0.00/0.00	c -finline-limit=10000000 -fomit-frame-pointer -fno-exceptions
0.00/0.00	c Linux baghera 2.6.27.19-170.2.35.fc10.i686.PAE i686
0.00/0.00	c
0.00/0.00	c reading HOME/instance-3365577-1305315277.cnf
0.00/0.00	c found header 'p cnf 4271 12620'
0.00/0.00	c finished parsing
0.00/0.00	c
0.00/0.00	c --check=0 --verbose=0 --order=3 --simprd=40 --merge=1 --hash=1
0.00/0.00	c --dominate=1 --restart=1 --restartint=100 --rebias=1 --rebiasint=1000
0.00/0.00	c --probe=1 --probeint=100000 --probeprd=10 --decompose=1 --minimize=3
0.00/0.00	c --maxdepth=1000 --strength=10 --elim=1 --elimint=300000 --elimprd=20
0.00/0.00	c --subst=1 --ands=1 --xors=1 --ites=1 --minlimit=1000 --maxlimit=10000000
0.00/0.00	c --random=1 --spread=2000 --seed=0 --skip=25
0.00/0.00	c
0.00/0.00	c sizeof     vars[0] = 16   alignment = 0       0 MB
0.00/0.00	c sizeof     orgs[0] =  8   alignment = 0       0 MB
0.00/0.00	c sizeof     occs[0] =  8   alignment = 0       0 MB
0.00/0.00	c sizeof iirfs[0..1] =  8   alignment = 0       0 MB
0.00/0.00	c
0.00/0.00	c starting search after 0.0 seconds
0.00/0.00	c no decision limit
0.00/0.00	c
0.00/0.00	c       original/binary      fixed     eliminated      learned       agility
0.00/0.00	c   seconds        variables     equivalent    conflicts       height       MB
0.00/0.00	c
0.00/0.00	c *    0.0    12618    4269      2     0      0       0      0    0.0   0    1
0.09/0.11	c s    0.1     9234    1198     49    84   2940       0      0    0.0   0    1
0.09/0.11	c l    0.1     9234    1198     49    84   2940       0   5038    0.0   0    1
0.09/0.11	c R    0.1     9420    1198     49    84   2940     100     99   53.8  15    1
0.09/0.11	c R    0.1     9425    1197     49    85   2940     201    199   56.4  20    1
0.09/0.14	c R    0.1     9602    1196     49    86   2940     802    792   63.6  23    1
0.09/0.15	c B    0.1     9785    1196     49    86   2940    1000    987   60.5  18    1
0.09/0.19	c B    0.2    10144    1196     49    86   2940    2002   1987   55.7  22    2
0.19/0.22	c s    0.2    10196    1185     50    96   2940    2710   2558   49.2  21    2
0.19/0.22	c -    0.2    10196    1185     50    96   2940    2710   4938   49.2  21    2
0.29/0.32	c +    0.3    11091    1175     51   105   2940    4939   5431   44.6  26    2
0.29/0.33	c 0    0.3    11371     864    360   107   2940    5023   4852   44.4  18    2
0.29/0.33	c
0.29/0.33	s UNSATISFIABLE
0.29/0.33	c
0.29/0.33	c 5023 conflicts, 18383 decisions, 1 random
0.29/0.33	c 3 iterations, 28 restarts, 2 skipped
0.29/0.33	c 1 enlarged, 40 shrunken, 49 rescored, 4 rebiased
0.29/0.33	c 2 simplifications, 0 reductions
0.29/0.33	c
0.29/0.33	c vars: 360 fixed, 107 equiv, 2940 elim, 110 merged
0.29/0.33	c elim: 67150 resolutions, 1 phases, 1 rounds
0.29/0.33	c sbst: 83% substituted, 1.3% nots, 98.1% ands, 0.0% xors, 0.6% ites
0.29/0.33	c arty: 2.16 and 0.00 xor average arity
0.29/0.33	c prbe: 4601 probed, 1 phases, 0 rounds
0.29/0.33	c prbe: 4 failed, 32 lifted, 3 merged
0.29/0.33	c sccs: 0 non trivial, 0 fixed, 0 merged
0.29/0.33	c hash: 0 units, 107 merged
0.29/0.33	c mins: 141500 learned, 19% deleted, 3 strong, 31 depth
0.29/0.33	c subs: 26 forward, 39 backward, 819 doms
0.29/0.33	c strs: 8 forward, 2 backward
0.29/0.33	c doms: 1308 dominators, 915 high, 51 low
0.29/0.33	c prps: 1145588 propagations, 3.47 megaprops
0.29/0.33	c
0.29/0.33	c 0.3 seconds, 2 MB max, 1 MB recycled

Verifier Data 

No possible verification on an UNSAT instance

Watcher Data 

runsolver Copyright (C) 2010-2011 Olivier ROUSSEL

This is runsolver version 3.3.0 (svn: 961)

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-3365577-1305315277/watcher-3365577-1305315277 -o /tmp/evaluation-result-3365577-1305315277/solver-3365577-1305315277 -C 5000 -W 5100 -M 15500 HOME/precosat HOME/instance-3365577-1305315277.cnf 

running on 4 cores: 0,2,4,6

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): 5100 seconds
Enforcing VSIZE limit (soft limit, will send SIGTERM then SIGKILL): 15872000 KiB
Enforcing VSIZE limit (hard limit, stack expansion will fail with SIGSEGV, brk() and mmap() will return ENOMEM): 15923200 KiB
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 0.79 0.19 0.06 2/317 8935
/proc/meminfo: memFree=28046056/32950928 swapFree=60199044/67111528
[pid=8935] ppid=8933 vsize=1792 CPUtime=0 cores=0,2,4,6
/proc/8935/stat : 8935 (precosat) R 8933 8935 8869 0 -1 4202496 378 0 0 0 0 0 0 0 25 0 1 0 643126471 1835008 335 33554432000 134512640 135151029 4293695408 18446744073709551615 134682502 0 0 4096 17442 0 0 0 17 4 0 0 0
/proc/8935/statm: 481 336 64 156 0 324 0

[startup+0.0182349 s]
/proc/loadavg: 0.79 0.19 0.06 2/317 8935
/proc/meminfo: memFree=28046056/32950928 swapFree=60199044/67111528
[pid=8935] ppid=8933 vsize=2580 CPUtime=0.01 cores=0,2,4,6
/proc/8935/stat : 8935 (precosat) R 8933 8935 8869 0 -1 4202496 577 0 0 0 1 0 0 0 25 0 1 0 643126471 2641920 533 33554432000 134512640 135151029 4293695408 18446744073709551615 134554578 0 0 4096 17442 0 0 0 17 4 0 0 0
/proc/8935/statm: 645 533 80 156 0 488 0
Current children cumulated CPU time (s) 0.01
Current children cumulated vsize (KiB) 2580

[startup+0.100223 s]
/proc/loadavg: 0.79 0.19 0.06 2/317 8935
/proc/meminfo: memFree=28046056/32950928 swapFree=60199044/67111528
[pid=8935] ppid=8933 vsize=3620 CPUtime=0.09 cores=0,2,4,6
/proc/8935/stat : 8935 (precosat) R 8933 8935 8869 0 -1 4202496 997 0 0 0 9 0 0 0 25 0 1 0 643126471 3706880 763 33554432000 134512640 135151029 4293695408 18446744073709551615 134514046 0 0 4096 17442 0 0 0 17 4 0 0 0
/proc/8935/statm: 905 763 80 156 0 748 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 3620

[startup+0.300187 s]
/proc/loadavg: 0.79 0.19 0.06 2/317 8935
/proc/meminfo: memFree=28046056/32950928 swapFree=60199044/67111528
[pid=8935] ppid=8933 vsize=3620 CPUtime=0.29 cores=0,2,4,6
/proc/8935/stat : 8935 (precosat) R 8933 8935 8869 0 -1 4202496 997 0 0 0 29 0 0 0 25 0 1 0 643126471 3706880 763 33554432000 134512640 135151029 4293695408 18446744073709551615 134551799 0 0 4096 17442 0 0 0 17 4 0 0 0
/proc/8935/statm: 905 763 80 156 0 748 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 3620

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

Child status: 20
Real time (s): 0.331005
CPU time (s): 0.330948
CPU user time (s): 0.329949
CPU system time (s): 0.000999
CPU usage (%): 99.9828
Max. virtual memory (cumulated for all children) (KiB): 3620

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.329949
system time used= 0.000999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 998
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= 1

runsolver used 0.001999 second user time and 0.009998 second system time

The end

Launcher Data 

Begin job on node122 at 2011-05-13 21:34:37
IDJOB=3365577
IDBENCH=70767
IDSOLVER=1843
FILE ID=node122/3365577-1305315277
RUNJOBID= node122-1305315246-8887
PBS_JOBID= 13324310
Free space on /tmp= 43764 MiB

SOLVER NAME= SAT09 reference solver:precosat 236
BENCH NAME= SAT09/APPLICATIONS/bitverif/minandmaxor/minandmaxor016.cnf
COMMAND LINE= HOME/precosat BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3365577-1305315277/watcher-3365577-1305315277 -o /tmp/evaluation-result-3365577-1305315277/solver-3365577-1305315277 -C 5000 -W 5100 -M 15500  HOME/precosat HOME/instance-3365577-1305315277.cnf

TIME LIMIT= 5000 seconds
MEMORY LIMIT= 15500 MiB
NBCORE= 4

MD5SUM BENCH= 12a87f636ffe8e3dae243dd6ce90cac8
RANDOM SEED=2098473044

node122.alineos.net Linux 2.6.18-164.el5 #1 SMP Thu Sep 3 03:28:30 EDT 2009

/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.820
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 0
cpu cores	: 4
apicid		: 0
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5333.64
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.820
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 0
cpu cores	: 4
apicid		: 16
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.75
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 2
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.820
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 1
cpu cores	: 4
apicid		: 2
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.75
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 3
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.820
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 1
cpu cores	: 4
apicid		: 18
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.83
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 4
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.820
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 2
cpu cores	: 4
apicid		: 4
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.75
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 5
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.820
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 2
cpu cores	: 4
apicid		: 20
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.75
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 6
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.820
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 3
cpu cores	: 4
apicid		: 6
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.75
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 7
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.820
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 3
cpu cores	: 4
apicid		: 22
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.97
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]


/proc/meminfo:
MemTotal:     32950928 kB
MemFree:      28046212 kB
Buffers:        213284 kB
Cached:        2861020 kB
SwapCached:      50072 kB
Active:        1425680 kB
Inactive:      3280632 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32950928 kB
LowFree:      28046212 kB
SwapTotal:    67111528 kB
SwapFree:     60199044 kB
Dirty:          133364 kB
Writeback:           0 kB
AnonPages:     1592964 kB
Mapped:          14204 kB
Slab:           102564 kB
PageTables:      33132 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83586992 kB
Committed_AS: 53080464 kB
VmallocTotal: 34359738367 kB
VmallocUsed:    296008 kB
VmallocChunk: 34359440975 kB
HugePages_Total:     0
HugePages_Free:      0
HugePages_Rsvd:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 43760 MiB
End job on node122 at 2011-05-13 21:34:37