Trace number 1723720

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
precosat 236UNSAT 1.77773 1.77838

General information on the benchmark

Namemanol-pipe-g6bi.cnf
MD5SUM276c05fafaa0b870834db9baaef6afca
Bench CategoryAPPLICATION (applications instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.883865
Satisfiable
(Un)Satisfiability was proved
Number of variables23891
Number of clauses69895
Sum of the clauses size163087
Maximum clause length3
Minimum clause length1
Number of clauses of size 11
Number of clauses of size 246596
Number of clauses of size 323298
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-1723720-1240688382.cnf
0.00/0.00	c found header 'p cnf 23891 69895'
0.00/0.10	c finished parsing
0.00/0.10	c
0.00/0.10	c --check=0 --verbose=0 --order=3 --simprd=40 --merge=1 --hash=1
0.00/0.10	c --dominate=1 --restart=1 --restartint=100 --rebias=1 --rebiasint=1000
0.00/0.10	c --probe=1 --probeint=100000 --probeprd=10 --decompose=1 --minimize=3
0.00/0.10	c --maxdepth=1000 --strength=10 --elim=1 --elimint=300000 --elimprd=20
0.00/0.10	c --subst=1 --ands=1 --xors=1 --ites=1 --minlimit=1000 --maxlimit=10000000
0.00/0.10	c --random=1 --spread=2000 --seed=0 --skip=25
0.00/0.10	c
0.00/0.10	c sizeof     vars[0] = 16   alignment = 0       0 MB
0.00/0.10	c sizeof     orgs[0] =  8   alignment = 0       0 MB
0.00/0.10	c sizeof     occs[0] =  8   alignment = 0       0 MB
0.00/0.10	c sizeof iirfs[0..1] =  8   alignment = 0       0 MB
0.00/0.10	c
0.00/0.10	c starting search after 0.1 seconds
0.00/0.10	c no decision limit
0.09/0.10	c
0.09/0.10	c       original/binary      fixed     eliminated      learned       agility
0.09/0.10	c   seconds        variables     equivalent    conflicts       height       MB
0.09/0.10	c
0.09/0.10	c *    0.1    69894   23890      1     0      0       0      0    0.0   0    6
0.89/0.96	c s    1.0    27503    4312    573   670  18336       0      0    0.0   0    4
0.89/0.96	c l    1.0    27503    4312    573   670  18336       0  23013    0.0   0    4
0.89/0.99	c R    1.0    27527    4312    573   670  18336     100     99  274.6  14    5
0.89/0.99	c R    1.0    27529    4312    573   670  18336     200    199  248.2  14    5
0.99/1.07	c B    1.1    27616    4306    579   670  18336    1000    988  176.1  17    5
1.09/1.12	c R    1.1    27765    4305    579   671  18336    1550   1533  152.5  17    5
1.09/1.16	c B    1.2    27779    4305    579   671  18336    2000   1983  152.2  16    5
1.19/1.26	c R    1.3    27880    4305    579   671  18336    3156   3133  140.4  15    5
1.49/1.53	c R    1.5    28134    4294    582   679  18336    7161   7106  121.6  21    6
1.49/1.58	c B    1.6    28414    4281    585   689  18336    8004   7932  117.2  18    6
1.69/1.77	c 0    1.8    31570    4038    781   736  18336   11169  11028  103.2  15    6
1.69/1.77	c
1.69/1.77	s UNSATISFIABLE
1.69/1.77	c
1.69/1.77	c 11169 conflicts, 47678 decisions, 7 random
1.69/1.77	c 6 iterations, 58 restarts, 0 skipped
1.69/1.77	c 0 enlarged, 139 shrunken, 109 rescored, 6 rebiased
1.69/1.77	c 1 simplifications, 0 reductions
1.69/1.77	c
1.69/1.77	c vars: 781 fixed, 736 equiv, 18336 elim, 774 merged
1.69/1.77	c elim: 330171 resolutions, 1 phases, 1 rounds
1.69/1.77	c sbst: 92% substituted, 1.3% nots, 84.2% ands, 10.3% xors, 4.1% ites
1.69/1.77	c arty: 2.08 and 2.00 xor average arity
1.69/1.77	c prbe: 8219 probed, 1 phases, 0 rounds
1.69/1.77	c prbe: 17 failed, 500 lifted, 307 merged
1.69/1.77	c sccs: 4 non trivial, 0 fixed, 7 merged
1.69/1.77	c hash: 7 units, 460 merged
1.69/1.77	c mins: 186010 learned, 24% deleted, 27 strong, 13 depth
1.69/1.77	c subs: 162 forward, 170 backward, 3774 doms
1.69/1.77	c strs: 152 forward, 23 backward
1.69/1.77	c doms: 5490 dominators, 3460 high, 30 low
1.69/1.77	c prps: 1447111 propagations, 0.82 megaprops
1.69/1.77	c
1.69/1.77	c 1.8 seconds, 9 MB max, 4 MB recycled

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-1723720-1240688382/watcher-1723720-1240688382 -o /tmp/evaluation-result-1723720-1240688382/solver-1723720-1240688382 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/precosat HOME/instance-1723720-1240688382.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: 1.27 1.20 1.08 2/65 18851
/proc/meminfo: memFree=1732640/2055920 swapFree=4192192/4192956
[pid=18851] ppid=18849 vsize=1728 CPUtime=0
/proc/18851/stat : 18851 (precosat) R 18849 18851 18319 0 -1 4194304 340 0 0 0 0 0 0 0 18 0 1 0 96868347 1769472 325 1992294400 134512640 135151029 4294956224 18446744073709551615 134534376 0 0 4096 0 0 0 0 17 1 0 0
/proc/18851/statm: 432 325 59 155 0 275 0

[startup+0.01643 s]
/proc/loadavg: 1.27 1.20 1.08 2/65 18851
/proc/meminfo: memFree=1732640/2055920 swapFree=4192192/4192956
[pid=18851] ppid=18849 vsize=3500 CPUtime=0
/proc/18851/stat : 18851 (precosat) R 18849 18851 18319 0 -1 4194304 757 0 0 0 0 0 0 0 18 0 1 0 96868347 3584000 742 1992294400 134512640 135151029 4294956224 18446744073709551615 134682423 0 0 4096 17442 0 0 0 17 1 0 0
/proc/18851/statm: 875 742 63 155 0 718 0
Current children cumulated CPU time (s) 0
Current children cumulated vsize (KiB) 3500

[startup+0.101438 s]
/proc/loadavg: 1.27 1.20 1.08 2/65 18851
/proc/meminfo: memFree=1732640/2055920 swapFree=4192192/4192956
[pid=18851] ppid=18849 vsize=7840 CPUtime=0.09
/proc/18851/stat : 18851 (precosat) R 18849 18851 18319 0 -1 4194304 1963 0 0 0 8 1 0 0 18 0 1 0 96868347 8028160 1849 1992294400 134512640 135151029 4294956224 18446744073709551615 134520115 0 0 4096 17442 0 0 0 17 1 0 0
/proc/18851/statm: 1960 1849 75 155 0 1803 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 7840

[startup+0.30146 s]
/proc/loadavg: 1.27 1.20 1.08 2/65 18851
/proc/meminfo: memFree=1732640/2055920 swapFree=4192192/4192956
[pid=18851] ppid=18849 vsize=8920 CPUtime=0.29
/proc/18851/stat : 18851 (precosat) R 18849 18851 18319 0 -1 4194304 2442 0 0 0 28 1 0 0 19 0 1 0 96868347 9134080 2105 1992294400 134512640 135151029 4294956224 18446744073709551615 134688827 0 0 4096 17442 0 0 0 17 1 0 0
/proc/18851/statm: 2230 2105 79 155 0 2073 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 8920

[startup+0.701504 s]
/proc/loadavg: 1.27 1.20 1.08 2/65 18851
/proc/meminfo: memFree=1732640/2055920 swapFree=4192192/4192956
[pid=18851] ppid=18849 vsize=12084 CPUtime=0.69
/proc/18851/stat : 18851 (precosat) R 18849 18851 18319 0 -1 4194304 3302 0 0 0 68 1 0 0 23 0 1 0 96868347 12374016 2836 1992294400 134512640 135151029 4294956224 18446744073709551615 134573909 0 0 4096 17442 0 0 0 17 1 0 0
/proc/18851/statm: 3021 2836 79 155 0 2864 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 12084

[startup+1.50159 s]
/proc/loadavg: 1.27 1.20 1.08 2/66 18852
/proc/meminfo: memFree=1721816/2055920 swapFree=4192192/4192956
[pid=18851] ppid=18849 vsize=11568 CPUtime=1.49
/proc/18851/stat : 18851 (precosat) R 18849 18851 18319 0 -1 4194304 3335 0 0 0 148 1 0 0 25 0 1 0 96868347 11845632 2740 1992294400 134512640 135151029 4294956224 18446744073709551615 134688592 0 0 4096 17442 0 0 0 17 1 0 0
/proc/18851/statm: 2892 2740 79 155 0 2735 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 11568

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

[startup+1.70162 s]
/proc/loadavg: 1.27 1.20 1.08 2/66 18852
/proc/meminfo: memFree=1721816/2055920 swapFree=4192192/4192956
[pid=18851] ppid=18849 vsize=11568 CPUtime=1.69
/proc/18851/stat : 18851 (precosat) R 18849 18851 18319 0 -1 4194304 3335 0 0 0 168 1 0 0 25 0 1 0 96868347 11845632 2740 1992294400 134512640 135151029 4294956224 18446744073709551615 134554568 0 0 4096 17442 0 0 0 17 1 0 0
/proc/18851/statm: 2892 2740 79 155 0 2735 0
Current children cumulated CPU time (s) 1.69
Current children cumulated vsize (KiB) 11568

Child status: 20
Real time (s): 1.77838
CPU time (s): 1.77773
CPU user time (s): 1.75873
CPU system time (s): 0.018997
CPU usage (%): 99.9636
Max. virtual memory (cumulated for all children) (KiB): 12084

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 1.75873
system time used= 0.018997
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 3336
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 0.003999 second user time and 0.009998 second system time

The end

Launcher Data 

Begin job on node76 at 2009-04-25 21:39:42
IDJOB=1723720
IDBENCH=71734
IDSOLVER=507
FILE ID=node76/1723720-1240688382
PBS_JOBID= 9186688
Free space on /tmp= 66200 MiB

SOLVER NAME= precosat 236
BENCH NAME= SAT_RACE06/manol-pipe-g6bi.cnf
COMMAND LINE= HOME/precosat BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1723720-1240688382/watcher-1723720-1240688382 -o /tmp/evaluation-result-1723720-1240688382/solver-1723720-1240688382 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/precosat HOME/instance-1723720-1240688382.cnf

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

MD5SUM BENCH= 276c05fafaa0b870834db9baaef6afca
RANDOM SEED=1397119489

node76.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		: 3000.220
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		: 3000.220
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	: 5996.54
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2055920 kB
MemFree:       1733120 kB
Buffers:         29808 kB
Cached:         232528 kB
SwapCached:        620 kB
Active:          99692 kB
Inactive:       176452 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1733120 kB
SwapTotal:     4192956 kB
SwapFree:      4192192 kB
Dirty:            1932 kB
Writeback:           0 kB
Mapped:          22400 kB
Slab:            32488 kB
Committed_AS:   312980 kB
PageTables:       1440 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= 66200 MiB
End job on node76 at 2009-04-25 21:39:44