Trace number 308310

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 FULLUNSAT 1.92171 1.92571

General information on the benchmark

Namerandom/2+p/p0.7/v3500/
unif2p-p0.7-v3500-c9345-S977957999-02-UNSAT.cnf
MD5SUM18f840e49f7b6014abf7c03df24e3402
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.369942
Satisfiable
(Un)Satisfiability was proved
Number of variables3498
Number of clauses9344
Sum of the clauses size25229
Maximum clause length3
Minimum clause length2
Number of clauses of size 10
Number of clauses of size 22803
Number of clauses of size 36541
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data (download as text)

1.83/1.92	c run March_dl for 5 seconds ... 
1.83/1.92	c Bin: Executing march_dl
1.83/1.92	c child exited successfully
1.83/1.92	c march_dl returned code 20.
1.83/1.92	c main():: ***                                   [ march satisfiability solver ]                                   ***
1.83/1.92	c main()::  **            Copyright (C) 2001-2004 M. Dufour, M. Heule, J. van Zwieten and H. van Maaren            **
1.83/1.92	c main()::   * This program may be redistributed and/or modified under the terms of the GNU Gereral Public License *
1.83/1.92	c main()::
1.83/1.92	c initFormula():: searching for DIMACS p-line....
1.83/1.92	c initFormula():: the DIMACS p-line indicates a CNF of 3500 variables and 9344 clauses.
1.83/1.92	c parseCNF():: parsing....
1.83/1.92	c parseCNF():: the CNF contains 0 unary clauses.
1.83/1.92	c runParser():: parsing was successful, warming up engines...
1.83/1.92	c simplify_formula():: removed 0 tautological, 738 satisfied and 0 duplicate clauses
1.83/1.92	c preprocessing fase I completed:: there are now 3291 free variables and 8606 clauses.
1.83/1.92	c shorten_equivalence(): average equivalence length reduced from nan to nan
1.83/1.92	c doublelook_init():: 90% succes rate goal.
1.83/1.92	c root_subsume():: 48 ternary clauses were subsumed, nrofceq = 172
1.83/1.92	c find_and_remove_tautogolies():: found and removed 154 tautologies
1.83/1.92	c root_subsume():: 22 ternary clauses were subsumed, nrofceq = 181
1.83/1.92	c find_and_remove_tautogolies():: found and removed 9 tautologies
1.83/1.92	c root_subsume():: 4 ternary clauses were subsumed, nrofceq = 185
1.83/1.92	c find_and_remove_tautogolies():: found and removed 4 tautologies
1.83/1.92	c root_subsume():: 0 ternary clauses were subsumed, nrofceq = 185
1.83/1.92	c lessRedundantTransformation():: nothing to be done.
1.83/1.92	c transformTo3SAT():: you gave me 3500 variables and 8708 clauses.
1.83/1.92	c transformTo3SAT():: by the way, the maximal clause length before transformation was 3.
1.83/1.92	c transformTo3SAT():: CHAINPLUS defined.
1.83/1.92	c transformTo3SAT():: I will add 0 variables and 0 clauses!
1.83/1.92	c transformTo3SAT():: the transformation yielded 3500 variabels and 8708 clauses.
1.83/1.92	c main():: clause / variable ratio: ( 8708 / 3500 ) = 2.49
1.83/1.92	c lengthWeight[ 2 ] = 3.97 : 1.00
1.83/1.92	c lengthWeight[ 3 ] = 3.38 : 0.85
1.83/1.92	c lengthWeight[ 4 ] = 2.87 : 0.72
1.83/1.92	c lengthWeight[ 5 ] = 2.44 : 0.61
1.83/1.92	c doublelook_init():: 90% succes rate goal.
1.83/1.92	c AddTernaryResolvents(): ternary clauses increased from 8708 to 8718
1.83/1.92	c root_subsume():: 0 ternary clauses were subsumed, nrofceq = 185
1.83/1.92	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
1.83/1.92	c check_ternary_clause_density :: low
1.83/1.92	c root full lookahead
1.83/1.92	c freevars: 3096, independend: 3096, ternary clauses: 5809 
1.83/1.92	c main():: all systems go!
1.83/1.92	c |----------------------------------------------------------------|
c |**
c |****
c |********
c |****************
c |********************************
c |*********************************
c |**********************************
c |************************************
c |****************************************
c |************************************************
c |****************************************************************
c |****************************************************************
1.83/1.92	c
1.83/1.92	c main():: nodeCount: 57
1.83/1.92	c main():: dead ends in main: 0
1.83/1.92	c main():: lookAheadCount: 213948
1.83/1.92	c main():: unitResolveCount: 3292
1.83/1.92	c main():: time=1.910000
1.83/1.92	c main():: necessary_assignments: 52
1.83/1.92	c main():: bin_sat: 0, bin_unsat 0
1.83/1.92	c main():: doublelook: #: 576, succes #: 529
1.83/1.92	c main():: doublelook: succesrate: 91.840, threshold: 0.047 * nrofvars
1.83/1.92	s UNSATISFIABLE
1.83/1.92	c SATZILLA_TIME=1.910000

Verifier Data (download as text)

No possible verification on an UNSAT instance

Watcher Data (download as text)

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

command line: runsolver --timestamp -w ROOT/results/node19/watcher-308310-1172518362 -o ROOT/results/node19/solver-308310-1172518362 -C 1200 -M 1800 --output-limit 1,15 /tmp/evaluation/308310-1172518362/SATzilla2007_F /tmp/evaluation/308310-1172518362/instance-308310-1172518362.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: 0.85 0.95 0.98 3/77 23850
/proc/meminfo: memFree=1282504/2055920 swapFree=4192812/4192956
[pid=23850] ppid=23848 vsize=1512 CPUtime=0
/proc/23850/stat : 23850 (SATzilla2007_F) R 23848 23850 23214 0 -1 4194304 142 0 0 0 0 0 0 0 18 0 1 0 271790307 1548288 125 18446744073709551615 134512640 135581085 4294956688 18446744073709551615 135218003 0 0 4096 0 0 0 0 17 1 0 0
/proc/23850/statm: 378 125 110 260 0 84 0
[pid=23851] ppid=23850 vsize=912 CPUtime=0
/proc/23851/stat : 23851 (march_dl) R 23850 23850 23214 0 -1 4194304 139 0 0 0 0 0 0 0 18 0 1 0 271790307 933888 133 18446744073709551615 134512640 134996440 4294956720 18446744073709551615 134652876 0 0 8392704 0 0 0 0 17 1 0 0
/proc/23851/statm: 228 133 50 118 0 107 0

[startup+0.107031 s]
/proc/loadavg: 0.85 0.95 0.98 3/77 23850
/proc/meminfo: memFree=1282504/2055920 swapFree=4192812/4192956
[pid=23850] ppid=23848 vsize=1512 CPUtime=0
/proc/23850/stat : 23850 (SATzilla2007_F) S 23848 23850 23214 0 -1 4194304 143 0 0 0 0 0 0 0 18 0 1 0 271790307 1548288 125 18446744073709551615 134512640 135581085 4294956688 18446744073709551615 135217869 0 0 4096 0 18446744071563356171 0 0 17 0 0 0
/proc/23850/statm: 378 125 110 260 0 84 0
[pid=23851] ppid=23850 vsize=2900 CPUtime=0.1
/proc/23851/stat : 23851 (march_dl) R 23850 23850 23214 0 -1 4194304 1677 0 0 0 10 0 0 0 20 0 1 0 271790307 2969600 618 18446744073709551615 134512640 134996440 4294956720 18446744073709551615 134544057 0 0 8392704 0 0 0 0 17 1 0 0
/proc/23851/statm: 725 618 65 118 0 604 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 4412

[startup+0.515074 s]
/proc/loadavg: 0.85 0.95 0.98 3/77 23850
/proc/meminfo: memFree=1282504/2055920 swapFree=4192812/4192956
[pid=23850] ppid=23848 vsize=1512 CPUtime=0
/proc/23850/stat : 23850 (SATzilla2007_F) S 23848 23850 23214 0 -1 4194304 143 0 0 0 0 0 0 0 18 0 1 0 271790307 1548288 125 18446744073709551615 134512640 135581085 4294956688 18446744073709551615 135217869 0 0 4096 0 18446744071563356171 0 0 17 0 0 0
/proc/23850/statm: 378 125 110 260 0 84 0
[pid=23851] ppid=23850 vsize=4208 CPUtime=0.5
/proc/23851/stat : 23851 (march_dl) R 23850 23850 23214 0 -1 4194304 2119 0 0 0 50 0 0 0 23 0 1 0 271790307 4308992 960 18446744073709551615 134512640 134996440 4294956720 18446744073709551615 134514293 0 0 8392704 0 0 0 0 17 1 0 0
/proc/23851/statm: 1052 960 75 118 0 931 0
Current children cumulated CPU time (s) 0.5
Current children cumulated vsize (KiB) 5720

[startup+1.33516 s]
/proc/loadavg: 0.85 0.95 0.98 2/79 23852
/proc/meminfo: memFree=1278776/2055920 swapFree=4192812/4192956
[pid=23850] ppid=23848 vsize=1512 CPUtime=0
/proc/23850/stat : 23850 (SATzilla2007_F) S 23848 23850 23214 0 -1 4194304 143 0 0 0 0 0 0 0 18 0 1 0 271790307 1548288 125 18446744073709551615 134512640 135581085 4294956688 18446744073709551615 135217869 0 0 4096 0 18446744071563356171 0 0 17 0 0 0
/proc/23850/statm: 378 125 110 260 0 84 0
[pid=23851] ppid=23850 vsize=4348 CPUtime=1.32
/proc/23851/stat : 23851 (march_dl) R 23850 23850 23214 0 -1 4194304 2120 0 0 0 132 0 0 0 25 0 1 0 271790307 4452352 961 18446744073709551615 134512640 134996440 4294956720 18446744073709551615 134514304 0 0 8392704 0 0 0 0 17 1 0 0
/proc/23851/statm: 1087 961 75 118 0 966 0
Current children cumulated CPU time (s) 1.32
Current children cumulated vsize (KiB) 5860

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

[startup+1.6412 s]
/proc/loadavg: 0.85 0.95 0.98 2/79 23852
/proc/meminfo: memFree=1278776/2055920 swapFree=4192812/4192956
[pid=23850] ppid=23848 vsize=1512 CPUtime=0
/proc/23850/stat : 23850 (SATzilla2007_F) S 23848 23850 23214 0 -1 4194304 143 0 0 0 0 0 0 0 18 0 1 0 271790307 1548288 125 18446744073709551615 134512640 135581085 4294956688 18446744073709551615 135217869 0 0 4096 0 18446744071563356171 0 0 17 0 0 0
/proc/23850/statm: 378 125 110 260 0 84 0
[pid=23851] ppid=23850 vsize=4348 CPUtime=1.63
/proc/23851/stat : 23851 (march_dl) R 23850 23850 23214 0 -1 4194304 2124 0 0 0 163 0 0 0 25 0 1 0 271790307 4452352 965 18446744073709551615 134512640 134996440 4294956720 18446744073709551615 134526923 0 0 8392704 0 0 0 0 17 1 0 0
/proc/23851/statm: 1087 965 75 118 0 966 0
Current children cumulated CPU time (s) 1.63
Current children cumulated vsize (KiB) 5860

[startup+1.84522 s]
/proc/loadavg: 0.85 0.95 0.98 2/79 23852
/proc/meminfo: memFree=1278776/2055920 swapFree=4192812/4192956
[pid=23850] ppid=23848 vsize=1512 CPUtime=0
/proc/23850/stat : 23850 (SATzilla2007_F) S 23848 23850 23214 0 -1 4194304 143 0 0 0 0 0 0 0 18 0 1 0 271790307 1548288 125 18446744073709551615 134512640 135581085 4294956688 18446744073709551615 135217869 0 0 4096 0 18446744071563356171 0 0 17 0 0 0
/proc/23850/statm: 378 125 110 260 0 84 0
[pid=23851] ppid=23850 vsize=4348 CPUtime=1.83
/proc/23851/stat : 23851 (march_dl) R 23850 23850 23214 0 -1 4194304 2124 0 0 0 183 0 0 0 25 0 1 0 271790307 4452352 965 18446744073709551615 134512640 134996440 4294956720 18446744073709551615 134513791 0 0 8392704 0 0 0 0 17 1 0 0
/proc/23851/statm: 1087 965 75 118 0 966 0
Current children cumulated CPU time (s) 1.83
Current children cumulated vsize (KiB) 5860

Child status: 20
Real time (s): 1.92571
CPU time (s): 1.92171
CPU user time (s): 1.91471
CPU system time (s): 0.006998
CPU usage (%): 99.7921
Max. virtual memory (cumulated for all children) (KiB): 5860

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 1.91471
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= 2297
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= 12
involuntary context switches= 39

runsolver used 0.001999 second user time and 0.011998 second system time

The end

Launcher Data (download as text)

Begin job on node19 on Mon Feb 26 19:32:43 UTC 2007

IDJOB= 308310
IDBENCH= 20227
IDSOLVER= 136
FILE ID= node19/308310-1172518362

PBS_JOBID= 3971615

Free space on /tmp= 66551 MiB

SOLVER NAME= SATzilla FULL
BENCH NAME= HOME/pub/bench/SAT07/random/2+p/p0.7/v3500/unif2p-p0.7-v3500-c9345-S977957999-02-UNSAT.cnf
COMMAND LINE= /tmp/evaluation/308310-1172518362/SATzilla2007_F /tmp/evaluation/308310-1172518362/instance-308310-1172518362.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node19/watcher-308310-1172518362 -o ROOT/results/node19/solver-308310-1172518362 -C 1200 -M 1800 --output-limit 1,15  /tmp/evaluation/308310-1172518362/SATzilla2007_F /tmp/evaluation/308310-1172518362/instance-308310-1172518362.cnf            

META MD5SUM SOLVER= cf97f3a2fd0b75b608f79c1ce3d2be4a
MD5SUM BENCH=  18f840e49f7b6014abf7c03df24e3402

RANDOM SEED= 75046728

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node19.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		: 3000.214
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	: 5931.00
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		: 3000.214
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:       1282848 kB
Buffers:         65708 kB
Cached:         586548 kB
SwapCached:          0 kB
Active:         313976 kB
Inactive:       381812 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1282848 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:           10452 kB
Writeback:           0 kB
Mapped:          62432 kB
Slab:            62768 kB
Committed_AS:   997224 kB
PageTables:       1756 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 node19 on Mon Feb 26 19:32:45 UTC 2007