Trace number 310932

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, and are wall clock time (not CPU 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
SATzilla RANDOMSAT 2.18067 2.18242

General information on the benchmark

Namerandom/2+p/p0.8/v1295/
unif2p-p0.8-v1295-c4027-S1762612346-15-SAT.cnf
MD5SUMe5673a7c266f877ed2c58f7b531e89ad
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.052991
Satisfiable
(Un)Satisfiability was proved
Number of variables1295
Number of clauses4026
Sum of the clauses size11273
Maximum clause length3
Minimum clause length2
Number of clauses of size 10
Number of clauses of size 2805
Number of clauses of size 33221
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data (download as text)

2.14/2.18	c run March_dl for 5 seconds ... 
2.14/2.18	c Bin: Executing march_dl
2.14/2.18	c child exited successfully
2.14/2.18	c march_dl returned code 10.
2.14/2.18	c main():: ***                                   [ march satisfiability solver ]                                   ***
2.14/2.18	c main()::  **            Copyright (C) 2001-2004 M. Dufour, M. Heule, J. van Zwieten and H. van Maaren            **
2.14/2.18	c main()::   * This program may be redistributed and/or modified under the terms of the GNU Gereral Public License *
2.14/2.18	c main()::
2.14/2.18	c initFormula():: searching for DIMACS p-line....
2.14/2.18	c initFormula():: the DIMACS p-line indicates a CNF of 1295 variables and 4026 clauses.
2.14/2.18	c parseCNF():: parsing....
2.14/2.18	c parseCNF():: the CNF contains 0 unary clauses.
2.14/2.18	c runParser():: parsing was successful, warming up engines...
2.14/2.18	c find_and_remove_tautogolies():: found and removed 1 tautologies
2.14/2.18	c simplify_formula():: removed 0 tautological, 163 satisfied and 0 duplicate clauses
2.14/2.18	c preprocessing fase I completed:: there are now 1261 free variables and 3863 clauses.
2.14/2.18	c shorten_equivalence(): average equivalence length reduced from nan to nan
2.14/2.18	c doublelook_init():: 90% succes rate goal.
2.14/2.18	c root_subsume():: 7 ternary clauses were subsumed, nrofceq = 22
2.14/2.18	c find_and_remove_tautogolies():: found and removed 21 tautologies
2.14/2.18	c root_subsume():: 0 ternary clauses were subsumed, nrofceq = 22
2.14/2.18	c root_subsume():: 0 ternary clauses were subsumed, nrofceq = 22
2.14/2.18	c lessRedundantTransformation():: nothing to be done.
2.14/2.18	c transformTo3SAT():: you gave me 1295 variables and 3846 clauses.
2.14/2.18	c transformTo3SAT():: by the way, the maximal clause length before transformation was 3.
2.14/2.18	c transformTo3SAT():: CHAINPLUS defined.
2.14/2.18	c transformTo3SAT():: I will add 0 variables and 0 clauses!
2.14/2.18	c transformTo3SAT():: the transformation yielded 1295 variabels and 3846 clauses.
2.14/2.18	c main():: clause / variable ratio: ( 3846 / 1295 ) = 2.97
2.14/2.18	c doublelook_init():: 90% succes rate goal.
2.14/2.18	c AddTernaryResolvents(): ternary clauses increased from 3846 to 3874
2.14/2.18	c root_subsume():: 0 ternary clauses were subsumed, nrofceq = 22
2.14/2.18	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
2.14/2.18	c check_ternary_clause_density :: low
2.14/2.18	c root full lookahead
2.14/2.18	c freevars: 1239, independend: 1239, ternary clauses: 3106 
2.14/2.18	c main():: all systems go!
2.14/2.18	c |----------------------------------------------------------------|
c |*
c |**
c |***
c |****
c |****
2.14/2.18	c
2.14/2.18	c main():: nodeCount: 2082
2.14/2.18	c main():: dead ends in main: 3
2.14/2.18	c main():: lookAheadCount: 376559
2.14/2.18	c main():: unitResolveCount: 64092
2.14/2.18	c main():: time=2.170000
2.14/2.18	c main():: necessary_assignments: 1479
2.14/2.18	c main():: bin_sat: 0, bin_unsat 0
2.14/2.18	c main():: doublelook: #: 4204, succes #: 3781
2.14/2.18	c main():: doublelook: succesrate: 89.938, threshold: 0.107 * nrofvars
2.14/2.18	c main():: SOLUTION VERIFIED :-)
2.14/2.18	s SATISFIABLE
2.14/2.18	v -1 -2 3 4 5 6 7 8 -9 10 11 -12 -13 -14 -15 16 17 -18 19 -20 -21 22 23 -24 -25 26 27 28 -29 -30 31 -32 -33 34 35 36 -37 -38 39 -40 -41 42 43 44 45 46 47 -48 49 -50 51 52 -53 54 55 -56 -57 58 59 60 61 62 -63 64 -65 66 67 68 -69 -70 -71 -72 -73 74 75 -76 -77 78 79 -80 -81 82 -83 84 -85 -86 87 -88 89 -90 91 92 -93 94 95 96 97 -98 99 100 101 102 103 -104 -105 106 -107 108 -109 110 111 112 113 114 -115 116 117 118 119 120 121 122 -123 124 125 -126 127 -128 -129 130 -131 132 -133 -134 -135 -136 -137 -138 -139 140 141 -142 -143 -144 145 -146 -147 -148 149 -150 -151 -152 153 -154 -155 -156 -157 -158 -159 -160 -161 -162 163 164 165 -166 167 -168 -169 170 -171 172 -173 174 -175 176 177 178 179 180 181 -182 183 184 185 186 -187 -188 -189 190 191 -192 193 194 195 196 -197 -198 199 -200 -201 202 203 204 -205 206 -207 208 209 210 211 -212 213 -214 215 216 217 -218 -219 -220 -221 -222 223 224 225 226 -227 -228 229 230 -231 -232 -233 -234 -235 236 237 -238 239 -240 241 242 243 244 245 246 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2.14/2.18	c SATZILLA_TIME=2.170000

Verifier Data (download as text)

OK

Watcher Data (download as text)

runsolver version 3.2.0 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node26/watcher-310932-1172562950 -o ROOT/results/node26/solver-310932-1172562950 -C 1200 -M 1800 --output-limit 1,15 /tmp/evaluation/310932-1172562950/SATzilla2007_R /tmp/evaluation/310932-1172562950/instance-310932-1172562950.cnf 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1230 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: 0.90 0.97 0.97 3/77 24285
/proc/meminfo: memFree=1833816/2055920 swapFree=4154888/4192956
[pid=24285] ppid=24283 vsize=1440 CPUtime=0
/proc/24285/stat : 24285 (SATzilla2007_R) S 24283 24285 23495 0 -1 4194304 128 0 0 0 0 0 0 0 18 0 1 0 276248640 1474560 110 18446744073709551615 134512640 135579813 4294956704 18446744073709551615 135216413 0 0 4096 0 18446744071563356171 0 0 17 1 0 0
/proc/24285/statm: 360 110 95 260 0 84 0
[pid=24286] ppid=24285 vsize=768 CPUtime=0
/proc/24286/stat : 24286 (march_dl) R 24285 24285 23495 0 -1 4194304 100 0 0 0 0 0 0 0 19 0 1 0 276248640 786432 95 18446744073709551615 134512640 134996440 4294956736 18446744073709551615 134652876 0 0 8392704 0 0 0 0 17 1 0 0
/proc/24286/statm: 192 95 50 118 0 71 0

[startup+0.107176 s]
/proc/loadavg: 0.90 0.97 0.97 3/77 24285
/proc/meminfo: memFree=1833816/2055920 swapFree=4154888/4192956
[pid=24285] ppid=24283 vsize=1440 CPUtime=0
/proc/24285/stat : 24285 (SATzilla2007_R) S 24283 24285 23495 0 -1 4194304 128 0 0 0 0 0 0 0 18 0 1 0 276248640 1474560 110 18446744073709551615 134512640 135579813 4294956704 18446744073709551615 135216413 0 0 4096 0 18446744071563356171 0 0 17 1 0 0
/proc/24285/statm: 360 110 95 260 0 84 0
[pid=24286] ppid=24285 vsize=2008 CPUtime=0.1
/proc/24286/stat : 24286 (march_dl) R 24285 24285 23495 0 -1 4194304 434 0 0 0 10 0 0 0 20 0 1 0 276248640 2056192 426 18446744073709551615 134512640 134996440 4294956736 18446744073709551615 134514071 0 0 8392704 0 0 0 0 17 1 0 0
/proc/24286/statm: 502 426 74 118 0 381 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 3448

[startup+0.515246 s]
/proc/loadavg: 0.90 0.97 0.97 3/77 24285
/proc/meminfo: memFree=1833816/2055920 swapFree=4154888/4192956
[pid=24285] ppid=24283 vsize=1440 CPUtime=0
/proc/24285/stat : 24285 (SATzilla2007_R) S 24283 24285 23495 0 -1 4194304 128 0 0 0 0 0 0 0 18 0 1 0 276248640 1474560 110 18446744073709551615 134512640 135579813 4294956704 18446744073709551615 135216413 0 0 4096 0 18446744071563356171 0 0 17 1 0 0
/proc/24285/statm: 360 110 95 260 0 84 0
[pid=24286] ppid=24285 vsize=2140 CPUtime=0.51
/proc/24286/stat : 24286 (march_dl) R 24285 24285 23495 0 -1 4194304 469 0 0 0 51 0 0 0 23 0 1 0 276248640 2191360 461 18446744073709551615 134512640 134996440 4294956736 18446744073709551615 134551546 0 0 8392704 0 0 0 0 17 1 0 0
/proc/24286/statm: 535 461 74 118 0 414 0
Current children cumulated CPU time (s) 0.51
Current children cumulated vsize (KiB) 3580

[startup+1.33539 s]
/proc/loadavg: 0.90 0.97 0.97 2/79 24287
/proc/meminfo: memFree=1832008/2055920 swapFree=4154888/4192956
[pid=24285] ppid=24283 vsize=1440 CPUtime=0
/proc/24285/stat : 24285 (SATzilla2007_R) S 24283 24285 23495 0 -1 4194304 128 0 0 0 0 0 0 0 18 0 1 0 276248640 1474560 110 18446744073709551615 134512640 135579813 4294956704 18446744073709551615 135216413 0 0 4096 0 18446744071563356171 0 0 17 1 0 0
/proc/24285/statm: 360 110 95 260 0 84 0
[pid=24286] ppid=24285 vsize=2272 CPUtime=1.33
/proc/24286/stat : 24286 (march_dl) R 24285 24285 23495 0 -1 4194304 493 0 0 0 133 0 0 0 25 0 1 0 276248640 2326528 485 18446744073709551615 134512640 134996440 4294956736 18446744073709551615 134514206 0 0 8392704 0 0 0 0 17 1 0 0
/proc/24286/statm: 568 485 74 118 0 447 0
Current children cumulated CPU time (s) 1.33
Current children cumulated vsize (KiB) 3712

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

[startup+1.64144 s]
/proc/loadavg: 0.90 0.97 0.97 2/79 24287
/proc/meminfo: memFree=1832008/2055920 swapFree=4154888/4192956
[pid=24285] ppid=24283 vsize=1440 CPUtime=0
/proc/24285/stat : 24285 (SATzilla2007_R) S 24283 24285 23495 0 -1 4194304 128 0 0 0 0 0 0 0 18 0 1 0 276248640 1474560 110 18446744073709551615 134512640 135579813 4294956704 18446744073709551615 135216413 0 0 4096 0 18446744071563356171 0 0 17 1 0 0
/proc/24285/statm: 360 110 95 260 0 84 0
[pid=24286] ppid=24285 vsize=2272 CPUtime=1.63
/proc/24286/stat : 24286 (march_dl) R 24285 24285 23495 0 -1 4194304 501 0 0 0 163 0 0 0 25 0 1 0 276248640 2326528 493 18446744073709551615 134512640 134996440 4294956736 18446744073709551615 134652876 0 0 8392704 0 0 0 0 17 1 0 0
/proc/24286/statm: 568 493 74 118 0 447 0
Current children cumulated CPU time (s) 1.63
Current children cumulated vsize (KiB) 3712

[startup+2.04951 s]
/proc/loadavg: 0.90 0.97 0.97 2/79 24287
/proc/meminfo: memFree=1832008/2055920 swapFree=4154888/4192956
[pid=24285] ppid=24283 vsize=1440 CPUtime=0
/proc/24285/stat : 24285 (SATzilla2007_R) S 24283 24285 23495 0 -1 4194304 128 0 0 0 0 0 0 0 18 0 1 0 276248640 1474560 110 18446744073709551615 134512640 135579813 4294956704 18446744073709551615 135216413 0 0 4096 0 18446744071563356171 0 0 17 1 0 0
/proc/24285/statm: 360 110 95 260 0 84 0
[pid=24286] ppid=24285 vsize=2272 CPUtime=2.04
/proc/24286/stat : 24286 (march_dl) R 24285 24285 23495 0 -1 4194304 507 0 0 0 204 0 0 0 25 0 1 0 276248640 2326528 499 18446744073709551615 134512640 134996440 4294956736 18446744073709551615 134527899 0 0 8392704 0 0 0 0 17 1 0 0
/proc/24286/statm: 568 499 74 118 0 447 0
Current children cumulated CPU time (s) 2.04
Current children cumulated vsize (KiB) 3712

[startup+2.15153 s]
/proc/loadavg: 0.90 0.97 0.97 2/79 24287
/proc/meminfo: memFree=1832008/2055920 swapFree=4154888/4192956
[pid=24285] ppid=24283 vsize=1440 CPUtime=0
/proc/24285/stat : 24285 (SATzilla2007_R) S 24283 24285 23495 0 -1 4194304 128 0 0 0 0 0 0 0 18 0 1 0 276248640 1474560 110 18446744073709551615 134512640 135579813 4294956704 18446744073709551615 135216413 0 0 4096 0 18446744071563356171 0 0 17 1 0 0
/proc/24285/statm: 360 110 95 260 0 84 0
[pid=24286] ppid=24285 vsize=2272 CPUtime=2.14
/proc/24286/stat : 24286 (march_dl) R 24285 24285 23495 0 -1 4194304 509 0 0 0 214 0 0 0 25 0 1 0 276248640 2326528 501 18446744073709551615 134512640 134996440 4294956736 18446744073709551615 134565032 0 0 8392704 0 0 0 0 17 1 0 0
/proc/24286/statm: 568 501 74 118 0 447 0
Current children cumulated CPU time (s) 2.14
Current children cumulated vsize (KiB) 3712

Child status: 10
Real time (s): 2.18242
CPU time (s): 2.18067
CPU user time (s): 2.17667
CPU system time (s): 0.003999
CPU usage (%): 99.9196
Max. virtual memory (cumulated for all children) (KiB): 3712

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 2.17667
system time used= 0.003999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 670
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= 14
involuntary context switches= 5

runsolver used 0.005999 second user time and 0.009998 second system time

The end

Launcher Data (download as text)

Begin job on node26 on Tue Feb 27 07:55:50 UTC 2007

IDJOB= 310932
IDBENCH= 20299
IDSOLVER= 134
FILE ID= node26/310932-1172562950

PBS_JOBID= 3971886

Free space on /tmp= 66551 MiB

SOLVER NAME= SATzilla RANDOM
BENCH NAME= HOME/pub/bench/SAT07/random/2+p/p0.8/v1295/unif2p-p0.8-v1295-c4027-S1762612346-15-SAT.cnf
COMMAND LINE= /tmp/evaluation/310932-1172562950/SATzilla2007_R /tmp/evaluation/310932-1172562950/instance-310932-1172562950.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node26/watcher-310932-1172562950 -o ROOT/results/node26/solver-310932-1172562950 -C 1200 -M 1800 --output-limit 1,15  /tmp/evaluation/310932-1172562950/SATzilla2007_R /tmp/evaluation/310932-1172562950/instance-310932-1172562950.cnf            

META MD5SUM SOLVER= 44dcaa7dbf032757655ae5e30ee65a10
MD5SUM BENCH=  e5673a7c266f877ed2c58f7b531e89ad

RANDOM SEED= 1033786

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node26.alineos.net 2.6.9-22.EL.rootsmp #1 SMP Mon Oct 3 08:59:52 CEST 2005 x86_64 x86_64 x86_64 GNU/Linux

/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		: 3000.279
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		: 3000.279
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:       1834160 kB
Buffers:         35708 kB
Cached:         121672 kB
SwapCached:      17788 kB
Active:         124200 kB
Inactive:        58712 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1834160 kB
SwapTotal:     4192956 kB
SwapFree:      4154888 kB
Dirty:            8484 kB
Writeback:           0 kB
Mapped:          29952 kB
Slab:            24392 kB
Committed_AS:   740852 kB
PageTables:       1712 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= 66551 MiB

End job on node26 on Tue Feb 27 07:55:52 UTC 2007