Trace number 1553309

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
picosat 913UNSAT 11.0133 11.0166

General information on the benchmark

NameAPPLICATIONS/bitverif/
minxorminand/minxorminand032.cnf
MD5SUM49dda3faa6676166ee2ccb89f6cd8ca0
Bench CategoryAPPLICATION (applications instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark7.59684
Satisfiable
(Un)Satisfiability was proved
Number of variables10794
Number of clauses31997
Sum of the clauses size74657
Maximum clause length3
Minimum clause length1
Number of clauses of size 12
Number of clauses of size 221330
Number of clauses of size 310665
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 PicoSAT SAT Solver Version 913
0.00/0.00	c Copyright (c) 2006 - 2009 Armin Biere JKU Linz
0.00/0.00	c gcc -Wall -Wextra -m32 -static -DNDEBUG -O3 -fomit-frame-pointer -finline-limit=1000000
0.00/0.00	c
0.00/0.00	c parsing HOME/instance-1553309-1238713481.cnf
0.00/0.00	c parsed header 'p cnf 10794 31997'
0.09/0.10	c initialized 10794 variables
0.09/0.10	c found 31997 non trivial clauses
0.09/0.10	c
0.09/0.10	c random number generator seed 0
0.09/0.10	c 
0.09/0.10	c  seconds     variables   original    learned     agility
0.09/0.10	c         level        used      conflicts    limit          MB
0.09/0.10	c 
0.09/0.10	c s   0.1   0.0 10778   0.3 10661     6     0     0   0.0   1.2 
0.09/0.13	c 
0.09/0.13	c initial reduction limit 5332 clauses
0.09/0.13	c 
0.09/0.13	c +   0.1  39.2 10778   9.5 10661   106   100  5865   4.0   1.3 
0.09/0.13	c R   0.1  39.2 10778   9.5 10661   106   100  5865   4.0   1.3 
0.09/0.16	c +   0.2  45.0 10778  21.5 10661   256   245  6451  18.9   1.3 
0.09/0.18	c R   0.2  46.3 10778  24.6 10661   406   395  6451  16.4   1.3 
0.09/0.19	c +   0.2  53.6 10778  25.1 10661   481   469  7096  13.6   1.3 
0.19/0.24	c +   0.2  59.9 10778  40.1 10661   818   801  7805  12.0   1.4 
0.29/0.32	c R   0.3  67.8 10778  44.0 10661  1211  1188  7805   9.4   1.5 
0.29/0.34	c +   0.3  65.6 10778  45.1 10661  1323  1299  8585  11.9   1.5 
0.39/0.47	c +   0.5  71.2 10778  60.3 10661  2080  2029  9443   8.9   1.6 
0.69/0.75	c +   0.8  90.4 10778  79.6 10661  3215  3141 10387  13.3   2.1 
0.69/0.75	c R   0.8  90.5 10778  79.6 10661  3219  3145 10387  13.9   2.1 
1.10/1.11	c +   1.1 100.8 10778  89.6 10661  4917  4807 11425  17.6   2.6 
1.69/1.77	c +   1.8 121.0 10778  97.7 10661  7470  7336 12567  24.2   3.9 
1.89/1.97	c N   2.0 122.5 10778  97.7 10661  8038  7900 12567  25.1   4.3 
2.89/2.94	c +   2.9 124.4 10778  97.7 10661 11299 11139 13823  10.8   6.2 
4.89/4.93	c +   4.9 118.6 10778  97.7 10661 17042  9871 15205  10.4   5.4 
5.59/5.60	c R   5.6 114.6 10778  97.7 10661 19293 12113 15205   4.8   6.4 
7.79/7.87	c +   7.9 111.1 10778  97.7 10661 25656 10779 16725   7.2   5.5 
10.89/10.91	c s  10.9 100.4 10304  97.7 10222 34700 10561 16725   4.2   4.5 
10.89/10.92	c R  10.9 100.3 10304  97.7 10222 34737 10597 16725   4.8   4.5 
10.89/10.92	c 
10.89/10.92	c  seconds     variables   original    learned     agility
10.89/10.92	c         level        used      conflicts    limit          MB
10.89/10.92	c 
10.99/11.01	c 0  11.0 100.0  7864  97.9 10222 35034 10883 16725   3.6   4.5 
10.99/11.01	c 
10.99/11.01	c  seconds     variables   original    learned     agility
10.99/11.01	c         level        used      conflicts    limit          MB
10.99/11.01	c 
10.99/11.01	s UNSATISFIABLE
10.99/11.01	c
10.99/11.01	c 3 iterations
10.99/11.01	c 120 restarts
10.99/11.01	c 70 failed literals
10.99/11.01	c 35034 conflicts
10.99/11.01	c 108103 decisions
10.99/11.01	c 2930 fixed variables
10.99/11.01	c 3487201 learned literals
10.99/11.01	c 25.5% deleted literals
10.99/11.01	c 34595531 propagations
10.99/11.01	c 97.9% variables used
10.99/11.01	c 11.0 seconds in library
10.99/11.01	c 3.1 megaprops/second
10.99/11.01	c 2 simplifications
10.99/11.01	c 3 reductions
10.99/11.01	c 11.0 MB recycled
10.99/11.01	c 7.9 MB maximally allocated
10.99/11.01	c 11.0 seconds total run time

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-1553309-1238713481/watcher-1553309-1238713481 -o /tmp/evaluation-result-1553309-1238713481/solver-1553309-1238713481 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/picosat HOME/instance-1553309-1238713481.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: 1.00 1.00 1.03 3/81 12076
/proc/meminfo: memFree=1138488/2055920 swapFree=4176448/4192956
[pid=12076] ppid=12074 vsize=1588 CPUtime=0
/proc/12076/stat : 12076 (picosat) R 12074 12076 11943 0 -1 4194304 283 0 0 0 0 0 0 0 20 0 1 0 1144012404 1626112 268 1992294400 134512640 135137933 4294956240 18446744073709551615 134689438 0 0 4096 0 0 0 0 17 1 0 0
/proc/12076/statm: 397 269 56 152 0 243 0

[startup+0.0976271 s]
/proc/loadavg: 1.00 1.00 1.03 3/81 12076
/proc/meminfo: memFree=1138488/2055920 swapFree=4176448/4192956
[pid=12076] ppid=12074 vsize=2116 CPUtime=0.09
/proc/12076/stat : 12076 (picosat) R 12074 12076 11943 0 -1 4194304 434 0 0 0 9 0 0 0 20 0 1 0 1144012404 2166784 419 1992294400 134512640 135137933 4294956240 18446744073709551615 134548982 0 0 4096 0 0 0 0 17 1 0 0
/proc/12076/statm: 529 419 61 152 0 375 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 2116

[startup+0.102627 s]
/proc/loadavg: 1.00 1.00 1.03 3/81 12076
/proc/meminfo: memFree=1138488/2055920 swapFree=4176448/4192956
[pid=12076] ppid=12074 vsize=2116 CPUtime=0.09
/proc/12076/stat : 12076 (picosat) R 12074 12076 11943 0 -1 4194304 434 0 0 0 9 0 0 0 20 0 1 0 1144012404 2166784 419 1992294400 134512640 135137933 4294956240 18446744073709551615 134547569 0 0 4096 0 0 0 0 17 1 0 0
/proc/12076/statm: 529 419 61 152 0 375 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 2116

[startup+0.301649 s]
/proc/loadavg: 1.00 1.00 1.03 3/81 12076
/proc/meminfo: memFree=1138488/2055920 swapFree=4176448/4192956
[pid=12076] ppid=12074 vsize=2404 CPUtime=0.29
/proc/12076/stat : 12076 (picosat) R 12074 12076 11943 0 -1 4194304 493 0 0 0 29 0 0 0 22 0 1 0 1144012404 2461696 478 1992294400 134512640 135137933 4294956240 18446744073709551615 134548608 0 0 4096 0 0 0 0 17 1 0 0
/proc/12076/statm: 601 478 69 152 0 447 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 2404

[startup+0.701693 s]
/proc/loadavg: 1.00 1.00 1.03 3/81 12076
/proc/meminfo: memFree=1138488/2055920 swapFree=4176448/4192956
[pid=12076] ppid=12074 vsize=2936 CPUtime=0.69
/proc/12076/stat : 12076 (picosat) R 12074 12076 11943 0 -1 4194304 644 0 0 0 69 0 0 0 25 0 1 0 1144012404 3006464 629 1992294400 134512640 135137933 4294956240 18446744073709551615 134527824 0 0 4096 0 0 0 0 17 1 0 0
/proc/12076/statm: 734 629 69 152 0 580 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 2936

[startup+1.50178 s]
/proc/loadavg: 1.00 1.00 1.03 2/82 12077
/proc/meminfo: memFree=1135664/2055920 swapFree=4176448/4192956
[pid=12076] ppid=12074 vsize=4388 CPUtime=1.49
/proc/12076/stat : 12076 (picosat) R 12074 12076 11943 0 -1 4194304 999 0 0 0 149 0 0 0 25 0 1 0 1144012404 4493312 984 1992294400 134512640 135137933 4294956240 18446744073709551615 134521344 0 0 4096 0 0 0 0 17 1 0 0
/proc/12076/statm: 1097 984 69 152 0 943 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 4388

[startup+3.10196 s]
/proc/loadavg: 1.00 1.00 1.03 2/82 12077
/proc/meminfo: memFree=1133296/2055920 swapFree=4176448/4192956
[pid=12076] ppid=12074 vsize=7436 CPUtime=3.09
/proc/12076/stat : 12076 (picosat) R 12074 12076 11943 0 -1 4194304 1768 0 0 0 308 1 0 0 25 0 1 0 1144012404 7614464 1753 1992294400 134512640 135137933 4294956240 18446744073709551615 134552950 0 0 4096 0 0 0 0 17 1 0 0
/proc/12076/statm: 1859 1753 69 152 0 1705 0
Current children cumulated CPU time (s) 3.09
Current children cumulated vsize (KiB) 7436

[startup+6.30131 s]
/proc/loadavg: 1.00 1.00 1.03 2/82 12077
/proc/meminfo: memFree=1130096/2055920 swapFree=4176448/4192956
[pid=12076] ppid=12074 vsize=8896 CPUtime=6.29
/proc/12076/stat : 12076 (picosat) R 12074 12076 11943 0 -1 4194304 2108 0 0 0 628 1 0 0 25 0 1 0 1144012404 9109504 2093 1992294400 134512640 135137933 4294956240 18446744073709551615 134548544 0 0 4096 0 0 0 0 17 1 0 0
/proc/12076/statm: 2224 2093 69 152 0 2070 0
Current children cumulated CPU time (s) 6.29
Current children cumulated vsize (KiB) 8896

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

[startup+9.50267 s]
/proc/loadavg: 1.00 1.00 1.03 2/82 12077
/proc/meminfo: memFree=1129776/2055920 swapFree=4176448/4192956
[pid=12076] ppid=12074 vsize=9160 CPUtime=9.49
/proc/12076/stat : 12076 (picosat) R 12074 12076 11943 0 -1 4194304 2182 0 0 0 948 1 0 0 25 0 1 0 1144012404 9379840 2167 1992294400 134512640 135137933 4294956240 18446744073709551615 134548870 0 0 4096 0 0 0 0 17 1 0 0
/proc/12076/statm: 2290 2167 69 152 0 2136 0
Current children cumulated CPU time (s) 9.49
Current children cumulated vsize (KiB) 9160

[startup+10.3018 s]
/proc/loadavg: 1.00 1.00 1.03 2/82 12077
/proc/meminfo: memFree=1129712/2055920 swapFree=4176448/4192956
[pid=12076] ppid=12074 vsize=9424 CPUtime=10.29
/proc/12076/stat : 12076 (picosat) R 12074 12076 11943 0 -1 4194304 2216 0 0 0 1028 1 0 0 25 0 1 0 1144012404 9650176 2201 1992294400 134512640 135137933 4294956240 18446744073709551615 134554634 0 0 4096 0 0 0 0 17 1 0 0
/proc/12076/statm: 2356 2201 69 152 0 2202 0
Current children cumulated CPU time (s) 10.29
Current children cumulated vsize (KiB) 9424

[startup+10.7018 s]
/proc/loadavg: 1.00 1.00 1.03 2/82 12077
/proc/meminfo: memFree=1129712/2055920 swapFree=4176448/4192956
[pid=12076] ppid=12074 vsize=9424 CPUtime=10.69
/proc/12076/stat : 12076 (picosat) R 12074 12076 11943 0 -1 4194304 2216 0 0 0 1068 1 0 0 25 0 1 0 1144012404 9650176 2201 1992294400 134512640 135137933 4294956240 18446744073709551615 134549047 0 0 4096 0 0 0 0 17 1 0 0
/proc/12076/statm: 2356 2201 69 152 0 2202 0
Current children cumulated CPU time (s) 10.69
Current children cumulated vsize (KiB) 9424

[startup+10.9018 s]
/proc/loadavg: 1.00 1.00 1.03 2/82 12077
/proc/meminfo: memFree=1129584/2055920 swapFree=4176448/4192956
[pid=12076] ppid=12074 vsize=9424 CPUtime=10.89
/proc/12076/stat : 12076 (picosat) R 12074 12076 11943 0 -1 4194304 2216 0 0 0 1088 1 0 0 25 0 1 0 1144012404 9650176 2201 1992294400 134512640 135137933 4294956240 18446744073709551615 134548908 0 0 4096 0 0 0 0 17 1 0 0
/proc/12076/statm: 2356 2201 69 152 0 2202 0
Current children cumulated CPU time (s) 10.89
Current children cumulated vsize (KiB) 9424

[startup+11.0068 s]
/proc/loadavg: 1.00 1.00 1.03 2/82 12077
/proc/meminfo: memFree=1129584/2055920 swapFree=4176448/4192956
[pid=12076] ppid=12074 vsize=9424 CPUtime=10.99
/proc/12076/stat : 12076 (picosat) R 12074 12076 11943 0 -1 4194304 2216 0 0 0 1098 1 0 0 25 0 1 0 1144012404 9650176 2201 1992294400 134512640 135137933 4294956240 18446744073709551615 134548550 0 0 4096 0 0 0 0 17 1 0 0
/proc/12076/statm: 2356 2201 69 152 0 2202 0
Current children cumulated CPU time (s) 10.99
Current children cumulated vsize (KiB) 9424

Child status: 20
Real time (s): 11.0166
CPU time (s): 11.0133
CPU user time (s): 10.9963
CPU system time (s): 0.016997
CPU usage (%): 99.9699
Max. virtual memory (cumulated for all children) (KiB): 9424

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 10.9963
system time used= 0.016997
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 2218
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= 25

runsolver used 0.019996 second user time and 0.040993 second system time

The end

Launcher Data 

Begin job on node86 at 2009-04-03 01:04:41
IDJOB=1553309
IDBENCH=70759
IDSOLVER=506
FILE ID=node86/1553309-1238713481
PBS_JOBID= 9085308
Free space on /tmp= 66488 MiB

SOLVER NAME= picosat 913
BENCH NAME= SAT09/APPLICATIONS/bitverif/minxorminand/minxorminand032.cnf
COMMAND LINE= HOME/picosat BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1553309-1238713481/watcher-1553309-1238713481 -o /tmp/evaluation-result-1553309-1238713481/solver-1553309-1238713481 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/picosat HOME/instance-1553309-1238713481.cnf

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

MD5SUM BENCH= 49dda3faa6676166ee2ccb89f6cd8ca0
RANDOM SEED=1687684363

node86.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		: 3000.238
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		: 3000.238
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:       1138904 kB
Buffers:         90012 kB
Cached:         719824 kB
SwapCached:       9020 kB
Active:         314848 kB
Inactive:       509196 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1138904 kB
SwapTotal:     4192956 kB
SwapFree:      4176448 kB
Dirty:            1236 kB
Writeback:           0 kB
Mapped:          19216 kB
Slab:            77208 kB
Committed_AS:  2829508 kB
PageTables:       2684 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= 66488 MiB
End job on node86 at 2009-04-03 01:04:52