Trace number 1731998

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 2.6306 2.63206

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 

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-1731998-1240776857.cnf
0.00/0.00	c found header 'p cnf 61 132'
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      132      61      0     0      0       0      0    0.0   0    0
0.00/0.00	c s    0.0      132      61      0     0      0       0      0    0.0   0    0
0.00/0.00	c l    0.0      132      61      0     0      0       0   1000    0.0   0    0
0.00/0.00	c R    0.0      132      61      0     0      0     101    101   14.3   8    0
0.00/0.00	c R    0.0      132      61      0     0      0     202    202   14.3  14    0
0.00/0.01	c N    0.0      132      61      0     0      0     804    804   14.5  28    0
0.00/0.01	c B    0.0      132      61      0     0      0    1003   1003   14.5  31    0
0.00/0.01	c +    0.0      132      61      0     0      0    1003   1100   14.5  31    0
0.00/0.02	c +    0.0      132      61      0     0      0    1251   1210   14.1  31    0
0.00/0.02	c +    0.0      132      61      0     0      0    1560   1331   13.8  31    0
0.03/0.03	c +    0.0      132      61      0     0      0    1950   1464   13.4  30    0
0.03/0.03	c B    0.0      132      61      0     0      0    2003   1391   13.4  30    0
0.03/0.04	c N    0.0      132      61      0     0      0    2410   1466   13.3  30    0
0.03/0.04	c +    0.0      132      61      0     0      0    2435   1610   13.3  30    0
0.03/0.06	c +    0.1      132      61      0     0      0    3041   1771   13.0  31    0
0.03/0.08	c +    0.1      132      61      0     0      0    3801   1948   12.7  31    0
0.10/0.10	c +    0.1      132      61      0     0      0    4750   2142   12.4  32    0
0.10/0.13	c +    0.1      132      61      0     0      0    5935   2356   12.1  30    0
0.10/0.14	c N    0.1      132      61      0     0      0    6418   2362   12.0  31    0
0.10/0.16	c
0.10/0.16	c       original/binary      fixed     eliminated      learned       agility
0.10/0.16	c   seconds        variables     equivalent    conflicts       height       MB
0.10/0.16	c
0.10/0.16	c +    0.2      132      61      0     0      0    7415   2591   11.7  29    0
0.10/0.18	c B    0.2      132      61      0     0      0    8006   2597   11.8  31    0
0.19/0.21	c +    0.2      132      61      0     0      0    9265   2850   11.7  30    0
0.19/0.27	c +    0.3      132      61      0     0      0   11581   3135   11.4  28    0
0.29/0.35	c +    0.4      132      61      0     0      0   14476   3448   11.2  31    0
0.29/0.40	c N    0.4      132      61      0     0      0   16036   3452   11.2  31    1
0.39/0.46	c +    0.5      132      61      0     0      0   18095   3792   11.1  32    1
0.59/0.60	c +    0.6      132      61      0     0      0   22615   4171   10.8  31    1
0.59/0.65	c B    0.7      132      61      0     0      0   24015   4176   10.6  32    1
0.69/0.78	c +    0.8      132      61      0     0      0   28265   4588   10.5  33    1
0.89/0.95	c s    1.0      133      61      0     0      0   33236   4596   10.2  30    0
1.00/1.01	c +    1.0      133      61      0     0      0   35331   5046   10.3  30    1
1.10/1.12	c N    1.1      133      61      0     0      0   38474   5054   10.3  31    1
1.29/1.30	c +    1.3      133      61      0     0      0   44160   5550   10.2  33    1
1.29/1.38	c s    1.4      134      61      0     0      0   46296   5557   10.1  34    0
1.59/1.66	c +    1.7      134      61      0     0      0   55201   6105   10.1  33    1
1.79/1.85	c s    1.8      135      61      0     0      0   59478   6113   10.0  30    0
1.99/2.00	c B    2.0      136      61      0     0      0   64019   6112    9.9  32    1
2.10/2.18	c +    2.2      356      60      1     0      0   69000   6715    9.7  34    1
2.29/2.30	c
2.29/2.30	c       original/binary      fixed     eliminated      learned       agility
2.29/2.30	c   seconds        variables     equivalent    conflicts       height       MB
2.29/2.30	c
2.29/2.30	c s    2.3     1682      60      1     0      0   72633   5812    9.6  31    1
2.59/2.63	c 0    2.6     3510      26     35     0      0   80819   6714    9.4  32    1
2.59/2.63	c
2.59/2.63	s UNSATISFIABLE
2.59/2.63	c
2.59/2.63	c 80819 conflicts, 100246 decisions, 1 random
2.59/2.63	c 9 iterations, 3 restarts, 265 skipped
2.59/2.63	c 20 enlarged, 13 shrunken, 790 rescored, 31 rebiased
2.59/2.63	c 5 simplifications, 0 reductions
2.59/2.63	c
2.59/2.63	c vars: 35 fixed, 0 equiv, 0 elim, 1 merged
2.59/2.63	c elim: 457 resolutions, 1 phases, 1 rounds
2.59/2.63	c sbst: 0% substituted, 0.0% nots, 0.0% ands, 0.0% xors, 0.0% ites
2.59/2.63	c arty: 0.00 and 0.00 xor average arity
2.59/2.63	c prbe: 244 probed, 2 phases, 2 rounds
2.59/2.63	c prbe: 0 failed, 0 lifted, 0 merged
2.59/2.63	c sccs: 0 non trivial, 0 fixed, 0 merged
2.59/2.63	c hash: 3 units, 1 merged
2.59/2.63	c mins: 815016 learned, 16% deleted, 5 strong, 11 depth
2.59/2.63	c subs: 0 forward, 0 backward, 3233 doms
2.59/2.63	c strs: 0 forward, 0 backward
2.59/2.63	c doms: 3233 dominators, 3192 high, 41 low
2.59/2.63	c prps: 1669750 propagations, 0.63 megaprops
2.59/2.63	c
2.59/2.63	c 2.6 seconds, 1 MB max, 5 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-1731998-1240776857/watcher-1731998-1240776857 -o /tmp/evaluation-result-1731998-1240776857/solver-1731998-1240776857 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/precosat HOME/instance-1731998-1240776857.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: 0.92 0.97 0.99 3/64 27556
/proc/meminfo: memFree=1839456/2055920 swapFree=4180832/4192956
[pid=27556] ppid=27554 vsize=784 CPUtime=0
/proc/27556/stat : 27556 (precosat) R 27554 27556 27465 0 -1 4194304 114 0 0 0 0 0 0 0 18 0 1 0 105713853 802816 98 1992294400 134512640 135151029 4294956240 18446744073709551615 134682502 0 0 4096 17442 0 0 0 17 1 0 0
/proc/27556/statm: 196 98 79 155 0 39 0

[startup+0.036922 s]
/proc/loadavg: 0.92 0.97 0.99 3/64 27556
/proc/meminfo: memFree=1839456/2055920 swapFree=4180832/4192956
[pid=27556] ppid=27554 vsize=916 CPUtime=0.03
/proc/27556/stat : 27556 (precosat) R 27554 27556 27465 0 -1 4194304 156 0 0 0 3 0 0 0 18 0 1 0 105713853 937984 140 1992294400 134512640 135151029 4294956240 18446744073709551615 134682502 0 0 4096 17442 0 0 0 17 1 0 0
/proc/27556/statm: 229 140 79 155 0 72 0
Current children cumulated CPU time (s) 0.03
Current children cumulated vsize (KiB) 916

[startup+0.101928 s]
/proc/loadavg: 0.92 0.97 0.99 3/64 27556
/proc/meminfo: memFree=1839456/2055920 swapFree=4180832/4192956
[pid=27556] ppid=27554 vsize=1048 CPUtime=0.1
/proc/27556/stat : 27556 (precosat) R 27554 27556 27465 0 -1 4194304 183 0 0 0 10 0 0 0 18 0 1 0 105713853 1073152 167 1992294400 134512640 135151029 4294956240 18446744073709551615 134554756 0 0 4096 17442 0 0 0 17 1 0 0
/proc/27556/statm: 262 167 79 155 0 105 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 1048

[startup+0.30195 s]
/proc/loadavg: 0.92 0.97 0.99 3/64 27556
/proc/meminfo: memFree=1839456/2055920 swapFree=4180832/4192956
[pid=27556] ppid=27554 vsize=1180 CPUtime=0.29
/proc/27556/stat : 27556 (precosat) R 27554 27556 27465 0 -1 4194304 232 0 0 0 29 0 0 0 19 0 1 0 105713853 1208320 216 1992294400 134512640 135151029 4294956240 18446744073709551615 134580489 0 0 4096 17442 0 0 0 17 1 0 0
/proc/27556/statm: 295 216 79 155 0 138 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 1180

[startup+0.701994 s]
/proc/loadavg: 0.92 0.97 0.99 3/64 27556
/proc/meminfo: memFree=1839456/2055920 swapFree=4180832/4192956
[pid=27556] ppid=27554 vsize=1584 CPUtime=0.69
/proc/27556/stat : 27556 (precosat) R 27554 27556 27465 0 -1 4194304 297 0 0 0 69 0 0 0 22 0 1 0 105713853 1622016 281 1992294400 134512640 135151029 4294956240 18446744073709551615 134574250 0 0 4096 17442 0 0 0 17 1 0 0
/proc/27556/statm: 396 281 79 155 0 239 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 1584

[startup+1.50108 s]
/proc/loadavg: 0.92 0.97 0.99 2/65 27557
/proc/meminfo: memFree=1838488/2055920 swapFree=4180832/4192956
[pid=27556] ppid=27554 vsize=1584 CPUtime=1.49
/proc/27556/stat : 27556 (precosat) R 27554 27556 27465 0 -1 4194304 334 0 0 0 149 0 0 0 25 0 1 0 105713853 1622016 318 1992294400 134512640 135151029 4294956240 18446744073709551615 134530705 0 0 4096 17442 0 0 0 17 1 0 0
/proc/27556/statm: 396 318 79 155 0 239 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 1584

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

[startup+2.30117 s]
/proc/loadavg: 0.92 0.97 0.99 2/65 27557
/proc/meminfo: memFree=1838296/2055920 swapFree=4180832/4192956
[pid=27556] ppid=27554 vsize=1788 CPUtime=2.29
/proc/27556/stat : 27556 (precosat) R 27554 27556 27465 0 -1 4194304 370 0 0 0 229 0 0 0 25 0 1 0 105713853 1830912 354 1992294400 134512640 135151029 4294956240 18446744073709551615 134577579 0 0 4096 17442 0 0 0 17 1 0 0
/proc/27556/statm: 447 354 79 155 0 290 0
Current children cumulated CPU time (s) 2.29
Current children cumulated vsize (KiB) 1788

[startup+2.50119 s]
/proc/loadavg: 0.92 0.97 0.99 2/65 27557
/proc/meminfo: memFree=1838296/2055920 swapFree=4180832/4192956
[pid=27556] ppid=27554 vsize=1788 CPUtime=2.49
/proc/27556/stat : 27556 (precosat) R 27554 27556 27465 0 -1 4194304 370 0 0 0 249 0 0 0 25 0 1 0 105713853 1830912 354 1992294400 134512640 135151029 4294956240 18446744073709551615 134555139 0 0 4096 17442 0 0 0 17 1 0 0
/proc/27556/statm: 447 354 79 155 0 290 0
Current children cumulated CPU time (s) 2.49
Current children cumulated vsize (KiB) 1788

[startup+2.6012 s]
/proc/loadavg: 0.92 0.97 0.99 2/65 27557
/proc/meminfo: memFree=1838296/2055920 swapFree=4180832/4192956
[pid=27556] ppid=27554 vsize=1788 CPUtime=2.59
/proc/27556/stat : 27556 (precosat) R 27554 27556 27465 0 -1 4194304 371 0 0 0 259 0 0 0 25 0 1 0 105713853 1830912 355 1992294400 134512640 135151029 4294956240 18446744073709551615 134520484 0 0 4096 17442 0 0 0 17 1 0 0
/proc/27556/statm: 447 355 79 155 0 290 0
Current children cumulated CPU time (s) 2.59
Current children cumulated vsize (KiB) 1788

Child status: 20
Real time (s): 2.63206
CPU time (s): 2.6306
CPU user time (s): 2.6276
CPU system time (s): 0.002999
CPU usage (%): 99.9447
Max. virtual memory (cumulated for all children) (KiB): 1788

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 2.6276
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= 377
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= 4

runsolver used 0.003999 second user time and 0.013997 second system time

The end

Launcher Data 

Begin job on node42 at 2009-04-26 22:14:17
IDJOB=1731998
IDBENCH=71108
IDSOLVER=507
FILE ID=node42/1731998-1240776857
PBS_JOBID= 9187253
Free space on /tmp= 66328 MiB

SOLVER NAME= precosat 236
BENCH NAME= SAT09/CRAFTED/sgen/unsat/sgen1-unsat-61-100.cnf
COMMAND LINE= HOME/precosat BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1731998-1240776857/watcher-1731998-1240776857 -o /tmp/evaluation-result-1731998-1240776857/solver-1731998-1240776857 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/precosat HOME/instance-1731998-1240776857.cnf

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

MD5SUM BENCH= 43b8e7efe061e21db6b4c047915ae87c
RANDOM SEED=542255350

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:       1839936 kB
Buffers:         16808 kB
Cached:         135420 kB
SwapCached:       5940 kB
Active:          60216 kB
Inactive:       100304 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1839936 kB
SwapTotal:     4192956 kB
SwapFree:      4180832 kB
Dirty:             984 kB
Writeback:           0 kB
Mapped:          14016 kB
Slab:            41528 kB
Committed_AS:   504144 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 22:14:20