Trace number 332843

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 CRAFTEDUNSAT 1.3348 1.33595

General information on the benchmark

Namecrafted/Medium/contest05/pebbling/
unsat-grid-pbl-0080.sat05-1344.reshuffled-07.cnf
MD5SUM35f2aba974a0579245ba9b669f0484ae
Bench CategoryCRAFTED (crafted instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.077987
Satisfiable
(Un)Satisfiability was proved
Number of variables6480
Number of clauses12722
Sum of the clauses size50722
Maximum clause length4
Minimum clause length1
Number of clauses of size 12
Number of clauses of size 280
Number of clauses of size 30
Number of clauses of size 412640
Number of clauses of size 50
Number of clauses of size over 50

Solver Data (download as text)

1.29/1.33	c run March_dl for 5 seconds ... 
1.29/1.33	c Bin: Executing march_dl
1.29/1.33	c child exited successfully
1.29/1.33	c march_dl returned code 20.
1.29/1.33	c main():: ***                                   [ march satisfiability solver ]                                   ***
1.29/1.33	c main()::  **            Copyright (C) 2001-2004 M. Dufour, M. Heule, J. van Zwieten and H. van Maaren            **
1.29/1.33	c main()::   * This program may be redistributed and/or modified under the terms of the GNU Gereral Public License *
1.29/1.33	c main()::
1.29/1.33	c initFormula():: searching for DIMACS p-line....
1.29/1.33	c initFormula():: the DIMACS p-line indicates a CNF of 6480 variables and 12722 clauses.
1.29/1.33	c parseCNF():: parsing....
1.29/1.33	c parseCNF():: the CNF contains 2 unary clauses.
1.29/1.33	c runParser():: parsing was successful, warming up engines...
1.29/1.33	c simplify_formula():: removed 0 tautological, 2 satisfied and 0 duplicate clauses
1.29/1.33	c preprocessing fase I completed:: there are now 6478 free variables and 12720 clauses.
1.29/1.33	c shorten_equivalence(): average equivalence length reduced from nan to nan
1.29/1.33	c doublelook_init():: 90% succes rate goal.
1.29/1.33	c root_subsume():: 0 ternary clauses were subsumed, nrofceq = 80
1.29/1.33	c find_and_remove_tautogolies():: found and removed 80 tautologies
1.29/1.33	c root_subsume():: 0 ternary clauses were subsumed, nrofceq = 80
1.29/1.33	c lessRedundantTransformation():: CHAINPLUS defined.
1.29/1.33	c lessRedundantTransformation():: the transformation yielded 9639 variables and 22117 clauses.
1.29/1.33	c transformTo3SAT():: you gave me 9639 variables and 22117 clauses.
1.29/1.33	c transformTo3SAT():: by the way, the maximal clause length before transformation was 3.
1.29/1.33	c transformTo3SAT():: CHAINPLUS defined.
1.29/1.33	c transformTo3SAT():: I will add 0 variables and 0 clauses!
1.29/1.33	c transformTo3SAT():: the transformation yielded 9639 variabels and 22117 clauses.
1.29/1.33	c main():: clause / variable ratio: ( 22117 / 9639 ) = 2.29
1.29/1.33	c doublelook_init():: 90% succes rate goal.
1.29/1.33	c AddTernaryResolvents(): ternary clauses increased from 22117 to 37833
1.29/1.33	c conflict occured during root_subsume()
1.29/1.33	c main():: conflict caused by unary equivalence clause found.
1.29/1.33	c main():: nodeCount: 0
1.29/1.33	c main():: dead ends in main: 0
1.29/1.33	c main():: lookAheadCount: 0
1.29/1.33	c main():: unitResolveCount: 0
1.29/1.33	c main():: time=1.310000
1.29/1.33	c main():: necessary_assignments: 0
1.29/1.33	c main():: bin_sat: 0, bin_unsat 0
1.29/1.33	c main():: doublelook: #: 0, succes #: 0
1.29/1.33	c main():: doublelook: succesrate: nan, threshold: nan * nrofvars
1.29/1.33	s UNSATISFIABLE
1.29/1.33	c SATZILLA_TIME=1.330000

Verifier Data (download as text)

No possible verification on an UNSAT instance

Watcher Data (download as text)

runsolver version 3.2.1 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node12/watcher-332843-1173492570 -o ROOT/results/node12/solver-332843-1173492570 -C 1200 -W 2400 -M 1800 --output-limit 1,15 /tmp/evaluation/332843-1173492570/SATzilla2007_C /tmp/evaluation/332843-1173492570/instance-332843-1173492570.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): 2400 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: 0.99 0.97 0.96 3/77 18321
/proc/meminfo: memFree=1688816/2055920 swapFree=4156588/4192956
[pid=18321] ppid=18319 vsize=1440 CPUtime=0
/proc/18321/stat : 18321 (SATzilla2007_C) R 18319 18321 17897 0 -1 4194304 127 0 0 0 0 0 0 0 18 0 1 0 369211485 1474560 110 18446744073709551615 134512640 135579813 4294956688 18446744073709551615 135216547 0 0 4096 0 0 0 0 17 1 0 0
/proc/18321/statm: 360 110 95 260 0 84 0
[pid=18322] ppid=18321 vsize=1116 CPUtime=0
/proc/18322/stat : 18322 (march_dl) R 18321 18321 17897 0 -1 4194304 182 0 0 0 0 0 0 0 18 0 1 0 369211485 1142784 177 18446744073709551615 134512640 134996440 4294956720 18446744073709551615 134652876 0 0 8392704 0 0 0 0 17 1 0 0
/proc/18322/statm: 279 177 50 118 0 158 0

[startup+0.090458 s]
/proc/loadavg: 0.99 0.97 0.96 3/77 18321
/proc/meminfo: memFree=1688816/2055920 swapFree=4156588/4192956
[pid=18321] ppid=18319 vsize=1440 CPUtime=0
/proc/18321/stat : 18321 (SATzilla2007_C) S 18319 18321 17897 0 -1 4194304 128 0 0 0 0 0 0 0 18 0 1 0 369211485 1474560 110 18446744073709551615 134512640 135579813 4294956688 18446744073709551615 135216413 0 0 4096 0 18446744071563356171 0 0 17 0 0 0
/proc/18321/statm: 360 110 95 260 0 84 0
[pid=18322] ppid=18321 vsize=2624 CPUtime=0.08
/proc/18322/stat : 18322 (march_dl) R 18321 18321 17897 0 -1 4194304 1782 0 0 0 8 0 0 0 19 0 1 0 369211485 2686976 534 18446744073709551615 134512640 134996440 4294956720 18446744073709551615 134543076 0 0 8392704 0 0 0 0 17 1 0 0
/proc/18322/statm: 656 534 57 118 0 535 0
Current children cumulated CPU time (s) 0.08
Current children cumulated vsize (KiB) 4064

[startup+0.101459 s]
/proc/loadavg: 0.99 0.97 0.96 3/77 18321
/proc/meminfo: memFree=1688816/2055920 swapFree=4156588/4192956
[pid=18321] ppid=18319 vsize=1440 CPUtime=0
/proc/18321/stat : 18321 (SATzilla2007_C) S 18319 18321 17897 0 -1 4194304 128 0 0 0 0 0 0 0 18 0 1 0 369211485 1474560 110 18446744073709551615 134512640 135579813 4294956688 18446744073709551615 135216413 0 0 4096 0 18446744071563356171 0 0 17 0 0 0
/proc/18321/statm: 360 110 95 260 0 84 0
[pid=18322] ppid=18321 vsize=2624 CPUtime=0.09
/proc/18322/stat : 18322 (march_dl) R 18321 18321 17897 0 -1 4194304 2098 0 0 0 9 0 0 0 19 0 1 0 369211485 2686976 538 18446744073709551615 134512640 134996440 4294956720 18446744073709551615 134543114 0 0 8392704 0 0 0 0 17 1 0 0
/proc/18322/statm: 656 538 61 118 0 535 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 4064

[startup+0.301494 s]
/proc/loadavg: 0.99 0.97 0.96 3/77 18321
/proc/meminfo: memFree=1688816/2055920 swapFree=4156588/4192956
[pid=18321] ppid=18319 vsize=1440 CPUtime=0
/proc/18321/stat : 18321 (SATzilla2007_C) S 18319 18321 17897 0 -1 4194304 128 0 0 0 0 0 0 0 18 0 1 0 369211485 1474560 110 18446744073709551615 134512640 135579813 4294956688 18446744073709551615 135216413 0 0 4096 0 18446744071563356171 0 0 17 0 0 0
/proc/18321/statm: 360 110 95 260 0 84 0
[pid=18322] ppid=18321 vsize=4744 CPUtime=0.29
/proc/18322/stat : 18322 (march_dl) R 18321 18321 17897 0 -1 4194304 2889 0 0 0 28 1 0 0 21 0 1 0 369211485 4857856 1046 18446744073709551615 134512640 134996440 4294956720 18446744073709551615 134583572 0 0 8392704 0 0 0 0 17 1 0 0
/proc/18322/statm: 1186 1046 67 118 0 1065 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 6184

[startup+0.701566 s]
/proc/loadavg: 0.99 0.97 0.96 3/77 18321
/proc/meminfo: memFree=1688816/2055920 swapFree=4156588/4192956
[pid=18321] ppid=18319 vsize=1440 CPUtime=0
/proc/18321/stat : 18321 (SATzilla2007_C) S 18319 18321 17897 0 -1 4194304 128 0 0 0 0 0 0 0 18 0 1 0 369211485 1474560 110 18446744073709551615 134512640 135579813 4294956688 18446744073709551615 135216413 0 0 4096 0 18446744071563356171 0 0 17 0 0 0
/proc/18321/statm: 360 110 95 260 0 84 0
[pid=18322] ppid=18321 vsize=4744 CPUtime=0.69
/proc/18322/stat : 18322 (march_dl) R 18321 18321 17897 0 -1 4194304 2895 0 0 0 68 1 0 0 25 0 1 0 369211485 4857856 1052 18446744073709551615 134512640 134996440 4294956720 18446744073709551615 134583572 0 0 8392704 0 0 0 0 17 1 0 0
/proc/18322/statm: 1186 1052 67 118 0 1065 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 6184

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

[startup+1.10564 s]
/proc/loadavg: 0.99 0.97 0.96 2/79 18323
/proc/meminfo: memFree=1680032/2055920 swapFree=4156588/4192956
[pid=18321] ppid=18319 vsize=1440 CPUtime=0
/proc/18321/stat : 18321 (SATzilla2007_C) S 18319 18321 17897 0 -1 4194304 128 0 0 0 0 0 0 0 18 0 1 0 369211485 1474560 110 18446744073709551615 134512640 135579813 4294956688 18446744073709551615 135216413 0 0 4096 0 18446744071563356171 0 0 17 0 0 0
/proc/18321/statm: 360 110 95 260 0 84 0
[pid=18322] ppid=18321 vsize=9852 CPUtime=1.1
/proc/18322/stat : 18322 (march_dl) R 18321 18321 17897 0 -1 4194304 4199 0 0 0 103 7 0 0 25 0 1 0 369211485 10088448 2270 18446744073709551615 134512640 134996440 4294956720 18446744073709551615 134675049 0 0 8392704 0 0 0 0 17 1 0 0
/proc/18322/statm: 2463 2270 72 118 0 2342 0
Current children cumulated CPU time (s) 1.1
Current children cumulated vsize (KiB) 11292

[startup+1.30167 s]
/proc/loadavg: 0.99 0.97 0.96 2/79 18323
/proc/meminfo: memFree=1680032/2055920 swapFree=4156588/4192956
[pid=18321] ppid=18319 vsize=1440 CPUtime=0
/proc/18321/stat : 18321 (SATzilla2007_C) S 18319 18321 17897 0 -1 4194304 128 0 0 0 0 0 0 0 18 0 1 0 369211485 1474560 110 18446744073709551615 134512640 135579813 4294956688 18446744073709551615 135216413 0 0 4096 0 18446744071563356171 0 0 17 0 0 0
/proc/18321/statm: 360 110 95 260 0 84 0
[pid=18322] ppid=18321 vsize=10084 CPUtime=1.29
/proc/18322/stat : 18322 (march_dl) R 18321 18321 17897 0 -1 4194304 4346 0 0 0 115 14 0 0 25 0 1 0 369211485 10326016 2366 18446744073709551615 134512640 134996440 4294956720 18446744073709551615 134561347 0 0 8392704 0 0 0 0 17 1 0 0
/proc/18322/statm: 2521 2366 72 118 0 2400 0
Current children cumulated CPU time (s) 1.29
Current children cumulated vsize (KiB) 11524

Child status: 20
Real time (s): 1.33595
CPU time (s): 1.3348
CPU user time (s): 1.18282
CPU system time (s): 0.151976
CPU usage (%): 99.9138
Max. virtual memory (cumulated for all children) (KiB): 11524

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 1.18282
system time used= 0.151976
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 4564
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= 27

runsolver used 0.001999 second user time and 0.010998 second system time

The end

Launcher Data (download as text)

Begin job on node12 on Sat Mar 10 02:09:30 UTC 2007

IDJOB= 332843
IDBENCH= 24589
IDSOLVER= 135
FILE ID= node12/332843-1173492570

PBS_JOBID= 4101096

Free space on /tmp= 66396 MiB

SOLVER NAME= SATzilla CRAFTED
BENCH NAME= HOME/pub/bench/SAT07/crafted/Medium/contest05/pebbling/unsat-grid-pbl-0080.sat05-1344.reshuffled-07.cnf
COMMAND LINE= /tmp/evaluation/332843-1173492570/SATzilla2007_C /tmp/evaluation/332843-1173492570/instance-332843-1173492570.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node12/watcher-332843-1173492570 -o ROOT/results/node12/solver-332843-1173492570 -C 1200 -W 2400 -M 1800 --output-limit 1,15  /tmp/evaluation/332843-1173492570/SATzilla2007_C /tmp/evaluation/332843-1173492570/instance-332843-1173492570.cnf            

META MD5SUM SOLVER= a1f00d13cbb558b34a83b365ff80fcc3
MD5SUM BENCH=  35f2aba974a0579245ba9b669f0484ae

RANDOM SEED= 181549530

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node12.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		: 3000.285
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		: 3000.285
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:       1689160 kB
Buffers:         38776 kB
Cached:         254308 kB
SwapCached:      15228 kB
Active:         182572 kB
Inactive:       133636 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1689160 kB
SwapTotal:     4192956 kB
SwapFree:      4156588 kB
Dirty:            8792 kB
Writeback:           0 kB
Mapped:          29572 kB
Slab:            36184 kB
Committed_AS:  1615292 kB
PageTables:       1692 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= 66396 MiB

End job on node12 on Sat Mar 10 02:09:32 UTC 2007