Trace number 371492

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
March KS 2007-02-08SAT 1.27781 1.28038

General information on the benchmark

Namerandom/OnTreshold/5SAT/v80/
unif-k5-r21.3-v80-c1704-S1264328999-02.SAT.shuffled.cnf
MD5SUMa8f6f75455aa2da8d4fca50e54ce6642
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.022996
Satisfiable
(Un)Satisfiability was proved
Number of variables80
Number of clauses1704
Sum of the clauses size8520
Maximum clause length5
Minimum clause length5
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 30
Number of clauses of size 40
Number of clauses of size 51704
Number of clauses of size over 50

Solver Data (download as text)

0.00/0.03	c main():: ***                                   [ march satisfiability solver ]                                   ***
0.00/0.03	c main()::  **            Copyright (C) 2001-2004 M. Dufour, M. Heule, J. van Zwieten and H. van Maaren            **
0.00/0.03	c main()::   * This program may be redistributed and/or modified under the terms of the GNU Gereral Public License *
0.00/0.03	c main()::
0.00/0.03	c initFormula():: searching for DIMACS p-line....
0.00/0.03	c full lookahead due to high density!
0.00/0.03	c initFormula():: the DIMACS p-line indicates a CNF of 80 variables and 1704 clauses.
0.00/0.03	c parseCNF():: parsing....
0.00/0.03	c parseCNF():: the CNF contains 0 unary clauses.
0.00/0.03	c runParser():: parsing was successful, warming up engines...
0.00/0.03	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
0.00/0.03	c preprocessing fase I completed:: there are now 80 free variables and 1704 clauses.
0.00/0.03	c stat :: sign balance is biased by 0.041
0.00/0.03	c shorten_equivalence(): average equivalence length reduced from nan to nan
0.00/0.03	c using k-SAT heuristics (size based diff)
0.00/0.03	c longest clause has size 5
0.00/0.03	c simplify_formula():: removed 0 tautological, 0 satisfied and 11 duplicate clauses
0.00/0.03	c resolvent_look() :: found 7 resolvents
0.00/0.03	c main():: clause / variable ratio: ( 1711 / 80 ) = 21.39
0.00/0.03	c longest clause has size 5
0.00/0.03	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
0.00/0.03	c dynamic_preselect_setsize :: off
0.00/0.03	c suggested doublelook initial :: 0
0.00/0.03	c main():: all systems go!
0.00/0.03	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |********************************
c |****************************************************************| 0 NC: 123 JD: 12
0.03/0.07	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |********************************
c |*********************************
c |**********************************
c |************************************
c |****************************************
c |************************************************
c |*************************************************
c |**************************************************
c |****************************************************
c |********************************************************
c |*********************************************************
c |**********************************************************
c |************************************************************
c |*************************************************************
c |**************************************************************
c |***************************************************************
c |****************************************************************| 1 NC: 1677 JD: 12
0.59/0.60	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |*****************
c |******************
c |********************
c |************************
c |*************************
c |**************************
c |****************************
c |*****************************
c |******************************
c |*******************************
c |********************************
c |*********************************
c |**********************************
c |************************************
c |****************************************
c |*****************************************
c |******************************************
c |********************************************
c |*********************************************
c |**********************************************
c |***********************************************
1.19/1.27	c solution bin :: 010000000001.10100000000000000000
1.19/1.27	c direction branchin :: current_rights = 4
1.19/1.27	
c |***********************************************
1.19/1.27	c
1.19/1.27	c main():: nodeCount: 3573
1.19/1.27	c main():: dead ends in main: 4
1.19/1.27	c main():: lookAheadCount: 331585
1.19/1.27	c main():: unitResolveCount: 8420
1.19/1.27	c main():: time=1.270000
1.19/1.27	c main():: necessary_assignments: 60
1.19/1.27	c main():: bin_sat: 0, bin_unsat 0
1.19/1.27	c main():: doublelook: #: 14439, succes #: 11733
1.19/1.27	c main():: doublelook: overall 4.418 of all possible doublelooks executed
1.19/1.27	c main():: doublelook: succesrate: 81.259, average DL_trigger: 21.925
1.19/1.27	c main():: SOLUTION VERIFIED :-)
1.19/1.27	s SATISFIABLE
1.19/1.27	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 0

Verifier Data (download as text)

OK

Watcher Data (download as text)

runsolver version 3.2.3 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node71/watcher-371492-1177543672 -o ROOT/results/node71/solver-371492-1177543672 -C 5000 -W 7500 -M 1800 --output-limit 1,15 /tmp/evaluation/371492-1177543672/march_ks /tmp/evaluation/371492-1177543672/instance-371492-1177543672.cnf 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 5000 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 5030 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 7500 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: 0.80 0.92 0.77 3/64 17264
/proc/meminfo: memFree=1792888/2055920 swapFree=4184252/4192956
[pid=17264] ppid=17262 vsize=788 CPUtime=0
/proc/17264/stat : 17264 (march_ks) R 17262 17264 16682 0 -1 4194304 111 0 0 0 0 0 0 0 18 0 1 0 230356552 806912 94 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134687937 0 0 4096 0 0 0 0 17 1 0 0
/proc/17264/statm: 197 95 50 123 0 72 0

[startup+0.0380371 s]
/proc/loadavg: 0.80 0.92 0.77 3/64 17264
/proc/meminfo: memFree=1792888/2055920 swapFree=4184252/4192956
[pid=17264] ppid=17262 vsize=980 CPUtime=0.03
/proc/17264/stat : 17264 (march_ks) R 17262 17264 16682 0 -1 4194304 176 0 0 0 3 0 0 0 18 0 1 0 230356552 1003520 159 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134526930 0 0 4096 0 0 0 0 17 1 0 0
/proc/17264/statm: 245 159 72 123 0 120 0
Current children cumulated CPU time (s) 0.03
Current children cumulated vsize (KiB) 980

[startup+0.101045 s]
/proc/loadavg: 0.80 0.92 0.77 3/64 17264
/proc/meminfo: memFree=1792888/2055920 swapFree=4184252/4192956
[pid=17264] ppid=17262 vsize=980 CPUtime=0.09
/proc/17264/stat : 17264 (march_ks) R 17262 17264 16682 0 -1 4194304 176 0 0 0 9 0 0 0 18 0 1 0 230356552 1003520 159 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134541782 0 0 4096 0 0 0 0 17 1 0 0
/proc/17264/statm: 245 159 72 123 0 120 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 980

[startup+0.301072 s]
/proc/loadavg: 0.80 0.92 0.77 3/64 17264
/proc/meminfo: memFree=1792888/2055920 swapFree=4184252/4192956
[pid=17264] ppid=17262 vsize=980 CPUtime=0.29
/proc/17264/stat : 17264 (march_ks) R 17262 17264 16682 0 -1 4194304 176 0 0 0 29 0 0 0 19 0 1 0 230356552 1003520 159 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134541779 0 0 4096 0 0 0 0 17 1 0 0
/proc/17264/statm: 245 159 72 123 0 120 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 980

[startup+0.701127 s]
/proc/loadavg: 0.80 0.92 0.77 3/64 17264
/proc/meminfo: memFree=1792888/2055920 swapFree=4184252/4192956
[pid=17264] ppid=17262 vsize=980 CPUtime=0.69
/proc/17264/stat : 17264 (march_ks) R 17262 17264 16682 0 -1 4194304 176 0 0 0 69 0 0 0 22 0 1 0 230356552 1003520 159 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134538197 0 0 4096 0 0 0 0 17 1 0 0
/proc/17264/statm: 245 159 72 123 0 120 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 980

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

[startup+1.10518 s]
/proc/loadavg: 0.80 0.92 0.77 2/65 17265
/proc/meminfo: memFree=1792496/2055920 swapFree=4184252/4192956
[pid=17264] ppid=17262 vsize=980 CPUtime=1.1
/proc/17264/stat : 17264 (march_ks) R 17262 17264 16682 0 -1 4194304 176 0 0 0 110 0 0 0 25 0 1 0 230356552 1003520 159 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134537979 0 0 4096 0 0 0 0 17 1 0 0
/proc/17264/statm: 245 159 72 123 0 120 0
Current children cumulated CPU time (s) 1.1
Current children cumulated vsize (KiB) 980

[startup+1.20119 s]
/proc/loadavg: 0.80 0.92 0.77 2/65 17265
/proc/meminfo: memFree=1792496/2055920 swapFree=4184252/4192956
[pid=17264] ppid=17262 vsize=980 CPUtime=1.19
/proc/17264/stat : 17264 (march_ks) R 17262 17264 16682 0 -1 4194304 176 0 0 0 119 0 0 0 25 0 1 0 230356552 1003520 159 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134538152 0 0 4096 0 0 0 0 17 1 0 0
/proc/17264/statm: 245 159 72 123 0 120 0
Current children cumulated CPU time (s) 1.19
Current children cumulated vsize (KiB) 980

Child status: 10
Real time (s): 1.28038
CPU time (s): 1.27781
CPU user time (s): 1.27781
CPU system time (s): 0
CPU usage (%): 99.7988
Max. virtual memory (cumulated for all children) (KiB): 980

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 1.2778
system time used= 0
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 178
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= 8
involuntary context switches= 1

runsolver used 0.001999 second user time and 0.008998 second system time

The end

Launcher Data (download as text)

Begin job on node71 on Wed Apr 25 23:27:52 UTC 2007

IDJOB= 371492
IDBENCH= 19823
IDSOLVER= 180
FILE ID= node71/371492-1177543672

PBS_JOBID= 4695822

Free space on /tmp= 66445 MiB

SOLVER NAME= March KS 2007-02-08
BENCH NAME= HOME/pub/bench/SAT07/random/OnTreshold/5SAT/v80/unif-k5-r21.3-v80-c1704-S1264328999-02.SAT.shuffled.cnf
COMMAND LINE= /tmp/evaluation/371492-1177543672/march_ks /tmp/evaluation/371492-1177543672/instance-371492-1177543672.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node71/watcher-371492-1177543672 -o ROOT/results/node71/solver-371492-1177543672 -C 5000 -W 7500 -M 1800 --output-limit 1,15  /tmp/evaluation/371492-1177543672/march_ks /tmp/evaluation/371492-1177543672/instance-371492-1177543672.cnf            

META MD5SUM SOLVER= d41d8cd98f00b204e9800998ecf8427e
MD5SUM BENCH=  a8f6f75455aa2da8d4fca50e54ce6642

RANDOM SEED= 336823597

TIME LIMIT= 5000 seconds
MEMORY LIMIT= 1800 MiB

Linux node71.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		: 3000.234
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		: 3000.234
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:       1793360 kB
Buffers:         21744 kB
Cached:         165196 kB
SwapCached:       2644 kB
Active:          72940 kB
Inactive:       123588 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1793360 kB
SwapTotal:     4192956 kB
SwapFree:      4184252 kB
Dirty:            2444 kB
Writeback:           0 kB
Mapped:          15740 kB
Slab:            52100 kB
Committed_AS:  3654824 kB
PageTables:       1448 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= 66445 MiB

End job on node71 on Wed Apr 25 23:27:54 UTC 2007