Trace number 1736448

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 2.52161 2.52332

General information on the benchmark

NameCRAFTED/parity-games/
instance_n5_i6_pp_ci_ce.cnf
MD5SUM2cb95a73fc66a1c6328b2127a33b0a14
Bench CategoryCRAFTED (crafted instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark1.74873
Satisfiable
(Un)Satisfiability was proved
Number of variables4380
Number of clauses31980
Sum of the clauses size102772
Maximum clause length20
Minimum clause length2
Number of clauses of size 10
Number of clauses of size 27508
Number of clauses of size 313398
Number of clauses of size 47973
Number of clauses of size 53006
Number of clauses of size over 595

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-1736448-1240811702.cnf
0.00/0.00	c found header 'p cnf 4380 31980'
0.00/0.03	c finished parsing
0.00/0.03	c
0.00/0.03	c --check=0 --verbose=0 --order=3 --simprd=40 --merge=1 --hash=1
0.00/0.03	c --dominate=1 --restart=1 --restartint=100 --rebias=1 --rebiasint=1000
0.00/0.03	c --probe=1 --probeint=100000 --probeprd=10 --decompose=1 --minimize=3
0.00/0.03	c --maxdepth=1000 --strength=10 --elim=1 --elimint=300000 --elimprd=20
0.00/0.03	c --subst=1 --ands=1 --xors=1 --ites=1 --minlimit=1000 --maxlimit=10000000
0.00/0.03	c --random=1 --spread=2000 --seed=0 --skip=25
0.00/0.03	c
0.00/0.03	c sizeof     vars[0] = 16   alignment = 0       0 MB
0.00/0.03	c sizeof     orgs[0] =  8   alignment = 0       0 MB
0.00/0.03	c sizeof     occs[0] =  8   alignment = 0       0 MB
0.00/0.03	c sizeof iirfs[0..1] =  8   alignment = 0       0 MB
0.00/0.03	c
0.00/0.03	c starting search after 0.0 seconds
0.00/0.03	c no decision limit
0.00/0.03	c
0.00/0.03	c       original/binary      fixed     eliminated      learned       agility
0.00/0.03	c   seconds        variables     equivalent    conflicts       height       MB
0.00/0.03	c
0.00/0.03	c *    0.0    31854    3434     90   856      0       0      0    0.0   0    2
0.19/0.25	c -    0.3    28851    2666    408  1306      0       0   1000    0.0   0    3
0.39/0.47	c s    0.5    20414    1826    408  1306    840       0      0    0.0   0    2
0.39/0.47	c l    0.5    20414    1826    408  1306    840       0  13631    0.0   0    2
0.39/0.48	c R    0.5    20426    1826    408  1306    840     102    102   16.2  15    2
0.39/0.49	c R    0.5    20426    1826    408  1306    840     203    203   25.7  17    2
0.49/0.54	c R    0.5    20445    1826    408  1306    840     806    802   20.3  18    2
0.49/0.56	c B    0.6    20464    1826    408  1306    840    1001    997   19.0  17    2
0.59/0.67	c B    0.7    20488    1826    408  1306    840    2002   1992   18.1  19    2
0.69/0.71	c R    0.7    20489    1826    408  1306    840    2412   2401   17.4  23    2
0.89/0.96	c s    1.0    20518    1826    408  1306    840    4232   4215   16.2  21    2
1.29/1.31	c R    1.3    22032    1825    409  1306    840    6426   6402   15.2  17    3
1.49/1.54	c B    1.5    22430    1825    409  1306    840    8003   7979   15.4  24    3
1.59/1.66	c s    1.7    22394    1825    409  1306    840    8773   8728   15.4  17    3
2.49/2.52	c 0    2.5    37321     882   1292  1366    840   13296  13226   14.1  18    4
2.49/2.52	c
2.49/2.52	s UNSATISFIABLE
2.49/2.52	c
2.49/2.52	c 13296 conflicts, 23066 decisions, 1 random
2.49/2.52	c 5 iterations, 60 restarts, 2 skipped
2.49/2.52	c 0 enlarged, 1425 shrunken, 129 rescored, 8 rebiased
2.49/2.52	c 3 simplifications, 0 reductions
2.49/2.52	c
2.49/2.52	c vars: 1292 fixed, 1366 equiv, 840 elim, 1525 merged
2.49/2.52	c elim: 137214 resolutions, 1 phases, 1 rounds
2.49/2.52	c sbst: 55% substituted, 0.0% nots, 100.0% ands, 0.0% xors, 0.0% ites
2.49/2.52	c arty: 2.20 and 0.00 xor average arity
2.49/2.52	c prbe: 16979 probed, 3 phases, 3 rounds
2.49/2.52	c prbe: 317 failed, 37 lifted, 26 merged
2.49/2.52	c sccs: 0 non trivial, 0 fixed, 0 merged
2.49/2.52	c hash: 53 units, 1499 merged
2.49/2.52	c mins: 218285 learned, 46% deleted, 3 strong, 37 depth
2.49/2.52	c subs: 2102 forward, 3238 backward, 15161 doms
2.49/2.52	c strs: 922 forward, 842 backward
2.49/2.52	c doms: 16039 dominators, 12345 high, 202 low
2.49/2.52	c prps: 3442814 propagations, 1.37 megaprops
2.49/2.52	c
2.49/2.52	c 2.5 seconds, 4 MB max, 1 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-1736448-1240811702/watcher-1736448-1240811702 -o /tmp/evaluation-result-1736448-1240811702/solver-1736448-1240811702 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/precosat HOME/instance-1736448-1240811702.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: 1.91 1.94 1.68 2/64 31887
/proc/meminfo: memFree=1632128/2055920 swapFree=4180704/4192956
[pid=31887] ppid=31885 vsize=1324 CPUtime=0
/proc/31887/stat : 31887 (precosat) R 31885 31887 31604 0 -1 4194304 229 0 0 0 0 0 0 0 18 0 1 0 109203487 1355776 214 1992294400 134512640 135151029 4294956224 18446744073709551615 134682502 0 0 4096 17442 0 0 0 17 1 0 0
/proc/31887/statm: 331 214 64 155 0 174 0

[startup+0.0440519 s]
/proc/loadavg: 1.91 1.94 1.68 2/64 31887
/proc/meminfo: memFree=1632128/2055920 swapFree=4180704/4192956
[pid=31887] ppid=31885 vsize=3460 CPUtime=0.03
/proc/31887/stat : 31887 (precosat) R 31885 31887 31604 0 -1 4194304 788 0 0 0 3 0 0 0 18 0 1 0 109203487 3543040 772 1992294400 134512640 135151029 4294956224 18446744073709551615 134682502 0 0 4096 17442 0 0 0 17 1 0 0
/proc/31887/statm: 865 772 79 155 0 708 0
Current children cumulated CPU time (s) 0.03
Current children cumulated vsize (KiB) 3460

[startup+0.101062 s]
/proc/loadavg: 1.91 1.94 1.68 2/64 31887
/proc/meminfo: memFree=1632128/2055920 swapFree=4180704/4192956
[pid=31887] ppid=31885 vsize=4120 CPUtime=0.09
/proc/31887/stat : 31887 (precosat) R 31885 31887 31604 0 -1 4194304 941 0 0 0 9 0 0 0 18 0 1 0 109203487 4218880 925 1992294400 134512640 135151029 4294956224 18446744073709551615 134682502 0 0 4096 17442 0 0 0 17 1 0 0
/proc/31887/statm: 1030 926 79 155 0 873 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 4120

[startup+0.3011 s]
/proc/loadavg: 1.91 1.94 1.68 2/64 31887
/proc/meminfo: memFree=1632128/2055920 swapFree=4180704/4192956
[pid=31887] ppid=31885 vsize=4616 CPUtime=0.29
/proc/31887/stat : 31887 (precosat) R 31885 31887 31604 0 -1 4194304 1111 0 0 0 29 0 0 0 19 0 1 0 109203487 4726784 1034 1992294400 134512640 135151029 4294956224 18446744073709551615 134519501 0 0 4096 17442 0 0 0 17 1 0 0
/proc/31887/statm: 1154 1034 79 155 0 997 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 4616

[startup+0.701179 s]
/proc/loadavg: 1.91 1.94 1.68 2/64 31887
/proc/meminfo: memFree=1632128/2055920 swapFree=4180704/4192956
[pid=31887] ppid=31885 vsize=4616 CPUtime=0.69
/proc/31887/stat : 31887 (precosat) R 31885 31887 31604 0 -1 4194304 1118 0 0 0 69 0 0 0 23 0 1 0 109203487 4726784 1041 1992294400 134512640 135151029 4294956224 18446744073709551615 134551430 0 0 4096 17442 0 0 0 17 1 0 0
/proc/31887/statm: 1154 1041 79 155 0 997 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 4616

[startup+1.50133 s]
/proc/loadavg: 1.91 1.94 1.68 2/65 31888
/proc/meminfo: memFree=1628216/2055920 swapFree=4180704/4192956
[pid=31887] ppid=31885 vsize=4616 CPUtime=1.49
/proc/31887/stat : 31887 (precosat) R 31885 31887 31604 0 -1 4194304 1118 0 0 0 149 0 0 0 25 0 1 0 109203487 4726784 1041 1992294400 134512640 135151029 4294956224 18446744073709551615 134578057 0 0 4096 17442 0 0 0 17 1 0 0
/proc/31887/statm: 1154 1041 79 155 0 997 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 4616

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

[startup+2.30149 s]
/proc/loadavg: 1.91 1.94 1.68 2/65 31888
/proc/meminfo: memFree=1627832/2055920 swapFree=4180704/4192956
[pid=31887] ppid=31885 vsize=5052 CPUtime=2.29
/proc/31887/stat : 31887 (precosat) R 31885 31887 31604 0 -1 4194304 1240 0 0 0 229 0 0 0 25 0 1 0 109203487 5173248 1163 1992294400 134512640 135151029 4294956224 18446744073709551615 134682502 0 0 4096 17442 0 0 0 17 1 0 0
/proc/31887/statm: 1263 1163 79 155 0 1106 0
Current children cumulated CPU time (s) 2.29
Current children cumulated vsize (KiB) 5052

[startup+2.50253 s]
/proc/loadavg: 1.91 1.94 1.68 2/65 31888
/proc/meminfo: memFree=1627832/2055920 swapFree=4180704/4192956
[pid=31887] ppid=31885 vsize=5584 CPUtime=2.49
/proc/31887/stat : 31887 (precosat) R 31885 31887 31604 0 -1 4194304 1366 0 0 0 249 0 0 0 25 0 1 0 109203487 5718016 1289 1992294400 134512640 135151029 4294956224 18446744073709551615 134682502 0 0 4096 17442 0 0 0 17 1 0 0
/proc/31887/statm: 1396 1289 79 155 0 1239 0
Current children cumulated CPU time (s) 2.49
Current children cumulated vsize (KiB) 5584

Child status: 20
Real time (s): 2.52332
CPU time (s): 2.52161
CPU user time (s): 2.51462
CPU system time (s): 0.006998
CPU usage (%): 99.9324
Max. virtual memory (cumulated for all children) (KiB): 5584

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 2.51462
system time used= 0.006998
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 1383
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= 5

runsolver used 0.006998 second user time and 0.010998 second system time

The end

Launcher Data 

Begin job on node28 at 2009-04-27 07:55:02
IDJOB=1736448
IDBENCH=71626
IDSOLVER=507
FILE ID=node28/1736448-1240811702
PBS_JOBID= 9187418
Free space on /tmp= 66344 MiB

SOLVER NAME= precosat 236
BENCH NAME= SAT09/CRAFTED/parity-games/instance_n5_i6_pp_ci_ce.cnf
COMMAND LINE= HOME/precosat BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1736448-1240811702/watcher-1736448-1240811702 -o /tmp/evaluation-result-1736448-1240811702/solver-1736448-1240811702 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/precosat HOME/instance-1736448-1240811702.cnf

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

MD5SUM BENCH= 2cb95a73fc66a1c6328b2127a33b0a14
RANDOM SEED=879513968

node28.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		: 3000.261
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		: 3000.261
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:       1632544 kB
Buffers:         46004 kB
Cached:         298448 kB
SwapCached:       5476 kB
Active:          95244 kB
Inactive:       257832 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1632544 kB
SwapTotal:     4192956 kB
SwapFree:      4180704 kB
Dirty:            1392 kB
Writeback:           0 kB
Mapped:          14308 kB
Slab:            56112 kB
Committed_AS:   491404 kB
PageTables:       1420 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264960 kB
VmallocChunk: 536605679 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 66340 MiB
End job on node28 at 2009-04-27 07:55:04