Trace number 308472

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 RANDOMUNSAT 2.25266 2.25512

General information on the benchmark

Namerandom/2+p/p0.7/v5500/
unif2p-p0.7-v5500-c14685-S1110066181-15-UNSAT.cnf
MD5SUM02ac0323b8681994481799266f6a3a32
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.172972
Satisfiable
(Un)Satisfiability was proved
Number of variables5496
Number of clauses14684
Sum of the clauses size39647
Maximum clause length3
Minimum clause length2
Number of clauses of size 10
Number of clauses of size 24405
Number of clauses of size 310279
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data (download as text)

2.15/2.25	c run March_dl for 5 seconds ... 
2.15/2.25	c Bin: Executing march_dl
2.15/2.25	c child exited successfully
2.15/2.25	c march_dl returned code 20.
2.15/2.25	c main():: ***                                   [ march satisfiability solver ]                                   ***
2.15/2.25	c main()::  **            Copyright (C) 2001-2004 M. Dufour, M. Heule, J. van Zwieten and H. van Maaren            **
2.15/2.25	c main()::   * This program may be redistributed and/or modified under the terms of the GNU Gereral Public License *
2.15/2.25	c main()::
2.15/2.25	c initFormula():: searching for DIMACS p-line....
2.15/2.25	c initFormula():: the DIMACS p-line indicates a CNF of 5500 variables and 14684 clauses.
2.15/2.25	c parseCNF():: parsing....
2.15/2.25	c parseCNF():: the CNF contains 0 unary clauses.
2.15/2.25	c runParser():: parsing was successful, warming up engines...
2.15/2.25	c simplify_formula():: removed 0 tautological, 1120 satisfied and 0 duplicate clauses
2.15/2.25	c preprocessing fase I completed:: there are now 5169 free variables and 13564 clauses.
2.15/2.25	c shorten_equivalence(): average equivalence length reduced from nan to nan
2.15/2.25	c doublelook_init():: 90% succes rate goal.
2.15/2.25	c root_subsume():: 52 ternary clauses were subsumed, nrofceq = 269
2.15/2.25	c find_and_remove_tautogolies():: found and removed 254 tautologies
2.15/2.25	c root_subsume():: 6 ternary clauses were subsumed, nrofceq = 280
2.15/2.25	c find_and_remove_tautogolies():: found and removed 11 tautologies
2.15/2.25	c root_subsume():: 2 ternary clauses were subsumed, nrofceq = 281
2.15/2.25	c find_and_remove_tautogolies():: found and removed 1 tautologies
2.15/2.25	c root_subsume():: 0 ternary clauses were subsumed, nrofceq = 282
2.15/2.25	c find_and_remove_tautogolies():: found and removed 1 tautologies
2.15/2.25	c root_subsume():: 0 ternary clauses were subsumed, nrofceq = 282
2.15/2.25	c lessRedundantTransformation():: nothing to be done.
2.15/2.25	c transformTo3SAT():: you gave me 5500 variables and 13603 clauses.
2.15/2.25	c transformTo3SAT():: by the way, the maximal clause length before transformation was 3.
2.15/2.25	c transformTo3SAT():: CHAINPLUS defined.
2.15/2.25	c transformTo3SAT():: I will add 0 variables and 0 clauses!
2.15/2.25	c transformTo3SAT():: the transformation yielded 5500 variabels and 13603 clauses.
2.15/2.25	c main():: clause / variable ratio: ( 13603 / 5500 ) = 2.47
2.15/2.25	c lengthWeight[ 2 ] = 3.97 : 1.00
2.15/2.25	c lengthWeight[ 3 ] = 3.38 : 0.85
2.15/2.25	c lengthWeight[ 4 ] = 2.87 : 0.72
2.15/2.25	c lengthWeight[ 5 ] = 2.44 : 0.61
2.15/2.25	c doublelook_init():: 90% succes rate goal.
2.15/2.25	c AddTernaryResolvents(): ternary clauses increased from 13603 to 13623
2.15/2.25	c root_subsume():: 0 ternary clauses were subsumed, nrofceq = 282
2.15/2.25	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
2.15/2.25	c check_ternary_clause_density :: low
2.15/2.25	c root full lookahead
2.15/2.25	c freevars: 4872, independend: 4872, ternary clauses: 9287 
2.15/2.25	c main():: all systems go!
2.15/2.25	c |----------------------------------------------------------------|
c |********
c |************
c |****************
c |************************
c |********************************
c |****************************************
c |************************************************
c |****************************************************************
c |****************************************************************
2.15/2.25	c
2.15/2.25	c main():: nodeCount: 15
2.15/2.25	c main():: dead ends in main: 0
2.15/2.25	c main():: lookAheadCount: 198216
2.15/2.25	c main():: unitResolveCount: 1364
2.15/2.25	c main():: time=2.240000
2.15/2.25	c main():: necessary_assignments: 11
2.15/2.25	c main():: bin_sat: 0, bin_unsat 0
2.15/2.25	c main():: doublelook: #: 381, succes #: 353
2.15/2.25	c main():: doublelook: succesrate: 92.651, threshold: 0.046 * nrofvars
2.15/2.25	s UNSATISFIABLE
2.15/2.25	c SATZILLA_TIME=2.240000

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/node3/watcher-308472-1172520784 -o ROOT/results/node3/solver-308472-1172520784 -C 1200 -M 1800 --output-limit 1,15 /tmp/evaluation/308472-1172520784/SATzilla2007_R /tmp/evaluation/308472-1172520784/instance-308472-1172520784.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: 5.93 6.15 4.09 3/77 23060
/proc/meminfo: memFree=812320/2055920 swapFree=4192812/4192956
[pid=23060] ppid=23058 vsize=1440 CPUtime=0
/proc/23060/stat : 23060 (SATzilla2007_R) S 23058 23060 21863 0 -1 4194304 128 0 0 0 0 0 0 0 18 0 1 0 272033276 1474560 110 18446744073709551615 134512640 135579813 4294956688 18446744073709551615 135216413 0 0 4096 0 18446744071563356171 0 0 17 1 0 0
/proc/23060/statm: 360 110 95 260 0 84 0
[pid=23061] ppid=23060 vsize=1072 CPUtime=0
/proc/23061/stat : 23061 (march_dl) R 23060 23060 21863 0 -1 4194304 171 0 0 0 0 0 0 0 20 0 1 0 272033276 1097728 166 18446744073709551615 134512640 134996440 4294956720 18446744073709551615 134669245 0 0 8392704 0 0 0 0 17 1 0 0
/proc/23061/statm: 268 167 50 118 0 147 0

[startup+0.106838 s]
/proc/loadavg: 5.93 6.15 4.09 3/77 23060
/proc/meminfo: memFree=812320/2055920 swapFree=4192812/4192956
[pid=23060] ppid=23058 vsize=1440 CPUtime=0
/proc/23060/stat : 23060 (SATzilla2007_R) S 23058 23060 21863 0 -1 4194304 128 0 0 0 0 0 0 0 18 0 1 0 272033276 1474560 110 18446744073709551615 134512640 135579813 4294956688 18446744073709551615 135216413 0 0 4096 0 18446744071563356171 0 0 17 1 0 0
/proc/23060/statm: 360 110 95 260 0 84 0
[pid=23061] ppid=23060 vsize=2024 CPUtime=0.1
/proc/23061/stat : 23061 (march_dl) R 23060 23060 21863 0 -1 4194304 1121 0 0 0 10 0 0 0 20 0 1 0 272033276 2072576 391 18446744073709551615 134512640 134996440 4294956720 18446744073709551615 134525498 0 0 8392704 0 0 0 0 17 1 0 0
/proc/23061/statm: 506 391 57 118 0 385 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 3464

[startup+0.51487 s]
/proc/loadavg: 5.93 6.15 4.09 3/77 23060
/proc/meminfo: memFree=812320/2055920 swapFree=4192812/4192956
[pid=23060] ppid=23058 vsize=1440 CPUtime=0
/proc/23060/stat : 23060 (SATzilla2007_R) S 23058 23060 21863 0 -1 4194304 128 0 0 0 0 0 0 0 18 0 1 0 272033276 1474560 110 18446744073709551615 134512640 135579813 4294956688 18446744073709551615 135216413 0 0 4096 0 18446744071563356171 0 0 17 1 0 0
/proc/23060/statm: 360 110 95 260 0 84 0
[pid=23061] ppid=23060 vsize=5916 CPUtime=0.5
/proc/23061/stat : 23061 (march_dl) R 23060 23060 21863 0 -1 4194304 3064 0 0 0 50 0 0 0 23 0 1 0 272033276 6057984 1365 18446744073709551615 134512640 134996440 4294956720 18446744073709551615 134528156 0 0 8392704 0 0 0 0 17 1 0 0
/proc/23061/statm: 1479 1365 75 118 0 1358 0
Current children cumulated CPU time (s) 0.5
Current children cumulated vsize (KiB) 7356

[startup+1.33594 s]
/proc/loadavg: 5.93 6.15 4.09 2/79 23062
/proc/meminfo: memFree=806800/2055920 swapFree=4192812/4192956
[pid=23060] ppid=23058 vsize=1440 CPUtime=0
/proc/23060/stat : 23060 (SATzilla2007_R) S 23058 23060 21863 0 -1 4194304 128 0 0 0 0 0 0 0 18 0 1 0 272033276 1474560 110 18446744073709551615 134512640 135579813 4294956688 18446744073709551615 135216413 0 0 4096 0 18446744071563356171 0 0 17 1 0 0
/proc/23060/statm: 360 110 95 260 0 84 0
[pid=23061] ppid=23060 vsize=6044 CPUtime=1.32
/proc/23061/stat : 23061 (march_dl) R 23060 23060 21863 0 -1 4194304 3073 0 0 0 132 0 0 0 25 0 1 0 272033276 6189056 1374 18446744073709551615 134512640 134996440 4294956720 18446744073709551615 134514275 0 0 8392704 0 0 0 0 17 1 0 0
/proc/23061/statm: 1511 1374 75 118 0 1390 0
Current children cumulated CPU time (s) 1.32
Current children cumulated vsize (KiB) 7484

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

[startup+1.64296 s]
/proc/loadavg: 5.93 6.15 4.09 2/79 23062
/proc/meminfo: memFree=806800/2055920 swapFree=4192812/4192956
[pid=23060] ppid=23058 vsize=1440 CPUtime=0
/proc/23060/stat : 23060 (SATzilla2007_R) S 23058 23060 21863 0 -1 4194304 128 0 0 0 0 0 0 0 18 0 1 0 272033276 1474560 110 18446744073709551615 134512640 135579813 4294956688 18446744073709551615 135216413 0 0 4096 0 18446744071563356171 0 0 17 1 0 0
/proc/23060/statm: 360 110 95 260 0 84 0
[pid=23061] ppid=23060 vsize=6044 CPUtime=1.63
/proc/23061/stat : 23061 (march_dl) R 23060 23060 21863 0 -1 4194304 3079 0 0 0 163 0 0 0 25 0 1 0 272033276 6189056 1380 18446744073709551615 134512640 134996440 4294956720 18446744073709551615 134513791 0 0 8392704 0 0 0 0 17 1 0 0
/proc/23061/statm: 1511 1380 75 118 0 1390 0
Current children cumulated CPU time (s) 1.63
Current children cumulated vsize (KiB) 7484

[startup+2.052 s]
/proc/loadavg: 5.93 6.15 4.09 2/79 23062
/proc/meminfo: memFree=806800/2055920 swapFree=4192812/4192956
[pid=23060] ppid=23058 vsize=1440 CPUtime=0
/proc/23060/stat : 23060 (SATzilla2007_R) S 23058 23060 21863 0 -1 4194304 128 0 0 0 0 0 0 0 18 0 1 0 272033276 1474560 110 18446744073709551615 134512640 135579813 4294956688 18446744073709551615 135216413 0 0 4096 0 18446744071563356171 0 0 17 1 0 0
/proc/23060/statm: 360 110 95 260 0 84 0
[pid=23061] ppid=23060 vsize=6044 CPUtime=2.04
/proc/23061/stat : 23061 (march_dl) R 23060 23060 21863 0 -1 4194304 3084 0 0 0 203 1 0 0 25 0 1 0 272033276 6189056 1385 18446744073709551615 134512640 134996440 4294956720 18446744073709551615 134528326 0 0 8392704 0 0 0 0 17 1 0 0
/proc/23061/statm: 1511 1385 75 118 0 1390 0
Current children cumulated CPU time (s) 2.04
Current children cumulated vsize (KiB) 7484

[startup+2.15501 s]
/proc/loadavg: 5.93 6.15 4.09 2/79 23062
/proc/meminfo: memFree=806800/2055920 swapFree=4192812/4192956
[pid=23060] ppid=23058 vsize=1440 CPUtime=0
/proc/23060/stat : 23060 (SATzilla2007_R) S 23058 23060 21863 0 -1 4194304 128 0 0 0 0 0 0 0 18 0 1 0 272033276 1474560 110 18446744073709551615 134512640 135579813 4294956688 18446744073709551615 135216413 0 0 4096 0 18446744071563356171 0 0 17 1 0 0
/proc/23060/statm: 360 110 95 260 0 84 0
[pid=23061] ppid=23060 vsize=6044 CPUtime=2.15
/proc/23061/stat : 23061 (march_dl) R 23060 23060 21863 0 -1 4194304 3094 0 0 0 214 1 0 0 25 0 1 0 272033276 6189056 1395 18446744073709551615 134512640 134996440 4294956720 18446744073709551615 134514331 0 0 8392704 0 0 0 0 17 1 0 0
/proc/23061/statm: 1511 1395 75 118 0 1390 0
Current children cumulated CPU time (s) 2.15
Current children cumulated vsize (KiB) 7484

Child status: 20
Real time (s): 2.25512
CPU time (s): 2.25266
CPU user time (s): 2.23966
CPU system time (s): 0.012998
CPU usage (%): 99.8906
Max. virtual memory (cumulated for all children) (KiB): 7676

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 2.23966
system time used= 0.012998
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 3252
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= 13
involuntary context switches= 6

runsolver used 0.004999 second user time and 0.011998 second system time

The end

Launcher Data (download as text)

Begin job on node3 on Mon Feb 26 20:13:04 UTC 2007

IDJOB= 308472
IDBENCH= 20232
IDSOLVER= 134
FILE ID= node3/308472-1172520784

PBS_JOBID= 3971613

Free space on /tmp= 66550 MiB

SOLVER NAME= SATzilla RANDOM
BENCH NAME= HOME/pub/bench/SAT07/random/2+p/p0.7/v5500/unif2p-p0.7-v5500-c14685-S1110066181-15-UNSAT.cnf
COMMAND LINE= /tmp/evaluation/308472-1172520784/SATzilla2007_R /tmp/evaluation/308472-1172520784/instance-308472-1172520784.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node3/watcher-308472-1172520784 -o ROOT/results/node3/solver-308472-1172520784 -C 1200 -M 1800 --output-limit 1,15  /tmp/evaluation/308472-1172520784/SATzilla2007_R /tmp/evaluation/308472-1172520784/instance-308472-1172520784.cnf            

META MD5SUM SOLVER= 44dcaa7dbf032757655ae5e30ee65a10
MD5SUM BENCH=  02ac0323b8681994481799266f6a3a32

RANDOM SEED= 132628348

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node3.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		: 3000.241
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		: 3000.241
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:        812728 kB
Buffers:         68188 kB
Cached:        1037968 kB
SwapCached:          0 kB
Active:         467160 kB
Inactive:       694188 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:        812728 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:            8756 kB
Writeback:           0 kB
Mapped:          74068 kB
Slab:            67492 kB
Committed_AS:  1157152 kB
PageTables:       1660 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= 66550 MiB

End job on node3 on Mon Feb 26 20:13:07 UTC 2007