Trace number 1719551

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
march_nn nnUNSAT 0.12298 0.126385

General information on the benchmark

Namecmu-bmc-barrel6.cnf
MD5SUMcc87f90bf08e13838e59f0f2639db121
Bench CategoryAPPLICATION (applications instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.108983
Satisfiable
(Un)Satisfiability was proved
Number of variables2306
Number of clauses8931
Sum of the clauses size24664
Maximum clause length217
Minimum clause length2
Number of clauses of size 10
Number of clauses of size 22629
Number of clauses of size 36048
Number of clauses of size 4252
Number of clauses of size 50
Number of clauses of size over 52

Solver Data 

0.09/0.11	c main():: ***                                   [ march satisfiability solver ]                                   ***
0.09/0.11	c main()::  **                Copyright (C) 2001-2009 M.J.H. Heule, J.E. van Zwieten, and M. Dufour                 **
0.09/0.11	c main()::   *  This program may be redistributed and/or modified under the terms of the GNU Gereral Public License  *
0.09/0.11	c main()::
0.09/0.11	c initFormula():: searching for DIMACS p-line....
0.09/0.11	c initFormula():: the DIMACS p-line indicates a CNF of 2306 variables and 8931 clauses.
0.09/0.11	c parseCNF():: parsing....
0.09/0.11	c parseCNF():: the CNF contains 0 unary clauses.
0.09/0.11	c runParser():: parsing was successful, warming up engines...
0.09/0.11	c find_and_remove_tautogolies():: found and removed 18 tautologies
0.09/0.11	c simplify_formula():: removed 504 tautological, 870 satisfied and 0 duplicate clauses
0.09/0.11	c preprocessing fase I completed:: there are now 1940 free variables and 7557 clauses.
0.09/0.11	c stat :: sign balance is biased by 0.969
0.09/0.11	c find_equivalence():: found 1260 3-equivalences
0.09/0.11	c find_and_remove_tautogolies():: found and removed 36 tautologies
0.09/0.11	c find_and_remove_tautogolies():: found and removed 27 tautologies
0.09/0.11	c find_and_remove_tautogolies():: found and removed 18 tautologies
0.09/0.11	c find_and_remove_tautogolies():: found and removed 6 tautologies
0.09/0.11	c find_and_remove_tautogolies():: found and removed 3 tautologies
0.09/0.11	c shorten_equivalence(): average equivalence length reduced from 3.266667 to 3.000000
0.09/0.11	c using k-SAT heuristics (size based diff)
0.09/0.11	c simplify_formula():: removed 0 tautological, 5040 satisfied and 0 duplicate clauses
0.09/0.11	c simplify_formula():: removed 0 tautological, 0 satisfied and 2730 duplicate clauses
0.09/0.11	c main():: clause / variable ratio: ( 2517 / 2306 ) = 1.09
0.09/0.11	c longest clause has size 217
0.09/0.11	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
0.09/0.11	c number of free variables = 725
0.09/0.11	c dynamic_preselect_setsize :: off
0.09/0.11	c main():: all systems go!
0.09/0.11	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |********************************
c |****************************************************************| ( 0/999) NodeCount: 10
0.09/0.12	c |----------------------------------------------------------------|
c |****
c |********
c |****************
c |********************************
c |************************************************
c |********************************************************
c |************************************************************
c |**************************************************************
c |***************************************************************
c |****************************************************************| ( 1/999) NodeCount: 23
0.09/0.12	c |----------------------------------------------------------------|
c |****************
c |************************
c |**************************
c |****************************
c |********************************
c |************************************************
c |********************************************************
c |************************************************************
c |**************************************************************
c |***************************************************************
c |****************************************************************| ( 2/999) NodeCount: 29
0.09/0.12	c |----------------------------------------------------------------|
c |****************
c |************************
c |*************************
c |**************************
c |****************************
c |********************************
c |************************************************
c |********************************************************
c |************************************************************
c |**************************************************************
c |***************************************************************
c |****************************************************************| ( 3/999) NodeCount: 32
0.09/0.12	c |----------------------------------------------------------------|
c |****************
c |************************
c |*************************
c |**************************
c |****************************
c |********************************
c |****************************************************************| ( 4/999) NodeCount: 33
0.09/0.12	c |----------------------------------------------------------------|
c |
0.09/0.12	c
0.09/0.12	c main():: nodeCount: 33
0.09/0.12	c main():: dead ends in main: 0
0.09/0.12	c main():: lookAheadCount: 1097
0.09/0.12	c main():: unitResolveCount: 1030
0.09/0.12	c main():: time=0.110000
0.09/0.12	c main():: necessary_assignments: 0
0.09/0.12	c main():: bin_sat: 0, bin_unsat 0
0.09/0.12	c main():: doublelook: #: 3, succes #: 1
0.09/0.12	c main():: doublelook: overall 0.385 of all possible doublelooks executed
0.09/0.12	c main():: doublelook: succesrate: 33.333, average DL_trigger: 130.585
0.09/0.12	s UNSATISFIABLE

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-1719551-1240647496/watcher-1719551-1240647496 -o /tmp/evaluation-result-1719551-1240647496/solver-1719551-1240647496 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/march_nn HOME/instance-1719551-1240647496.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: 1.07 1.00 1.00 2/64 994
/proc/meminfo: memFree=1183456/2055920 swapFree=4192812/4192956
[pid=994] ppid=992 vsize=968 CPUtime=0
/proc/994/stat : 994 (march_nn) R 992 994 316 0 -1 4194304 137 0 0 0 0 0 0 0 20 0 1 0 92778416 991232 122 1992294400 134512640 135197250 4294956224 18446744073709551615 134697286 0 0 4096 0 0 0 0 17 1 0 0
/proc/994/statm: 242 122 58 167 0 73 0

[startup+0.057284 s]
/proc/loadavg: 1.07 1.00 1.00 2/64 994
/proc/meminfo: memFree=1183456/2055920 swapFree=4192812/4192956
[pid=994] ppid=992 vsize=2024 CPUtime=0.05
/proc/994/stat : 994 (march_nn) R 992 994 316 0 -1 4194304 494 0 0 0 5 0 0 0 20 0 1 0 92778416 2072576 339 1992294400 134512640 135197250 4294956224 18446744073709551615 134560987 0 0 4096 0 0 0 0 17 1 0 0
/proc/994/statm: 506 339 67 167 0 337 0
Current children cumulated CPU time (s) 0.05
Current children cumulated vsize (KiB) 2024

[startup+0.101288 s]
/proc/loadavg: 1.07 1.00 1.00 2/64 994
/proc/meminfo: memFree=1183456/2055920 swapFree=4192812/4192956
[pid=994] ppid=992 vsize=2276 CPUtime=0.09
/proc/994/stat : 994 (march_nn) R 992 994 316 0 -1 4194304 555 0 0 0 9 0 0 0 20 0 1 0 92778416 2330624 399 1992294400 134512640 135197250 4294956224 18446744073709551615 134535978 0 0 4096 0 0 0 0 17 1 0 0
/proc/994/statm: 569 399 82 167 0 400 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 2276

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

Child status: 20
Real time (s): 0.126385
CPU time (s): 0.12298
CPU user time (s): 0.119981
CPU system time (s): 0.002999
CPU usage (%): 97.3059
Max. virtual memory (cumulated for all children) (KiB): 2276

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.119981
system time used= 0.002999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 737
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= 1
involuntary context switches= 1

runsolver used 0.003999 second user time and 0.007998 second system time

The end

Launcher Data 

Begin job on node75 at 2009-04-25 10:18:16
IDJOB=1719551
IDBENCH=69564
IDSOLVER=522
FILE ID=node75/1719551-1240647496
PBS_JOBID= 9186401
Free space on /tmp= 66432 MiB

SOLVER NAME= march_nn nn
BENCH NAME= SAT_RACE08/cnf/cmu-bmc-barrel6.cnf
COMMAND LINE= HOME/march_nn BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1719551-1240647496/watcher-1719551-1240647496 -o /tmp/evaluation-result-1719551-1240647496/solver-1719551-1240647496 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/march_nn HOME/instance-1719551-1240647496.cnf

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

MD5SUM BENCH= cc87f90bf08e13838e59f0f2639db121
RANDOM SEED=85362498

node75.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		: 3000.213
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		: 3000.213
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	: 5996.54
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2055920 kB
MemFree:       1183872 kB
Buffers:         80148 kB
Cached:         699192 kB
SwapCached:        144 kB
Active:          31976 kB
Inactive:       761464 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1183872 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:            1180 kB
Writeback:           0 kB
Mapped:          23720 kB
Slab:            64456 kB
Committed_AS:   193004 kB
PageTables:       1416 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= 66432 MiB
End job on node75 at 2009-04-25 10:18:16