Trace number 312303

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 2007-02-08UNSAT 56.5714 56.7019

General information on the benchmark

Namerandom/2+p/p0.8/v1665/
unif2p-p0.8-v1665-c5178-S1439774943-07-UNSAT.cnf
MD5SUMa3885eff2851f09f9ef1a5d548225d79
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark56.5714
Satisfiable
(Un)Satisfiability was proved
Number of variables1665
Number of clauses5177
Sum of the clauses size14496
Maximum clause length3
Minimum clause length2
Number of clauses of size 10
Number of clauses of size 21035
Number of clauses of size 34142
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data (download as text)

0.00/0.06	c main():: ***                                   [ march satisfiability solver ]                                   ***
0.00/0.06	c main()::  **            Copyright (C) 2001-2004 M. Dufour, M. Heule, J. van Zwieten and H. van Maaren            **
0.00/0.06	c main()::   * This program may be redistributed and/or modified under the terms of the GNU Gereral Public License *
0.00/0.06	c main()::
0.00/0.06	c initFormula():: searching for DIMACS p-line....
0.00/0.06	c initFormula():: the DIMACS p-line indicates a CNF of 1665 variables and 5177 clauses.
0.00/0.06	c parseCNF():: parsing....
0.00/0.06	c parseCNF():: the CNF contains 0 unary clauses.
0.00/0.06	c runParser():: parsing was successful, warming up engines...
0.00/0.06	c simplify_formula():: removed 0 tautological, 193 satisfied and 0 duplicate clauses
0.00/0.06	c preprocessing fase I completed:: there are now 1620 free variables and 4984 clauses.
0.00/0.06	c stat :: sign balance is biased by 0.615
0.00/0.06	c shorten_equivalence(): average equivalence length reduced from nan to nan
0.00/0.06	c using 3-SAT heuristics (occurence based diff)
0.00/0.06	c longest clause has size 3
0.00/0.06	c simplify_formula():: removed 0 tautological, 0 satisfied and 48 duplicate clauses
0.00/0.06	c resolvent_look() :: found 16 resolvents
0.00/0.06	c lessRedundantTransformation():: nothing to be done.
0.00/0.06	c transformTo3SAT():: you gave me 1665 variables and 5000 clauses.
0.00/0.06	c transformTo3SAT():: by the way, the maximal clause length before transformation was 3.
0.00/0.06	c transformTo3SAT():: I will add 0 variables and 0 clauses!
0.00/0.06	c transformTo3SAT():: the transformation yielded 1665 variabels and 5000 clauses.
0.00/0.06	c main():: clause / variable ratio: ( 5000 / 1665 ) = 3.00
0.00/0.06	c longest clause has size 3
0.00/0.06	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
0.00/0.06	c dynamic_preselect_setsize :: on
0.00/0.06	c suggested doublelook initial :: 0
0.00/0.06	c main():: all systems go!
0.00/0.06	c |----------------------------------------------------------------|
c |*
c |**
c |***
c |****
c |********
c |****************
c |********************************
c |****************************************************************| 0 NC: 109 JD: 4
1.13/1.13	c |----------------------------------------------------------------|
c |****
c |********
c |****************
c |********************************
c |*********************************
c |**********************************
c |***********************************
c |************************************
c |****************************************
c |************************************************
c |*************************************************
c |**************************************************
c |***************************************************
c |****************************************************
c |********************************************************
c |*********************************************************
c |**********************************************************
c |***********************************************************
c |************************************************************
c |****************************************************************| 1 NC: 9535 JD: 4
39.21/39.24	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 |****************************************************************| 2 NC: 14624 JD: 4
56.21/56.27	c |----------------------------------------------------------------|
c |********
c |****************
c |********************
c |************************
c |********************************
c |*********************************
c |**********************************
c |************************************
c |****************************************
c |************************************************
c |****************************************************************| 3 NC: 14637 JD: 4
56.52/56.58	c |----------------------------------------------------------------|
c |
56.52/56.58	c
56.52/56.58	c main():: nodeCount: 14637
56.52/56.58	c main():: dead ends in main: 17
56.52/56.58	c main():: lookAheadCount: 4395735
56.52/56.58	c main():: unitResolveCount: 450660
56.52/56.58	c main():: time=56.570000
56.52/56.58	c main():: necessary_assignments: 8535
56.52/56.58	c main():: bin_sat: 0, bin_unsat 0
56.52/56.58	c main():: doublelook: #: 120382, succes #: 96967
56.52/56.58	c main():: doublelook: overall 2.784 of all possible doublelooks executed
56.52/56.58	c main():: doublelook: succesrate: 80.549, average DL_trigger: 11519.190
56.52/56.58	s UNSATISFIABLE

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/node67/watcher-312303-1172585461 -o ROOT/results/node67/solver-312303-1172585461 -C 1200 -M 1800 --output-limit 1,15 /tmp/evaluation/312303-1172585461/march_ks /tmp/evaluation/312303-1172585461/instance-312303-1172585461.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: 0.00 0.03 0.33 3/64 20840
/proc/meminfo: memFree=1858616/2055920 swapFree=4183972/4192956
[pid=20840] ppid=20838 vsize=788 CPUtime=0
/proc/20840/stat : 20840 (march_ks) R 20838 20840 20480 0 -1 4194304 122 0 0 0 0 0 0 0 18 0 1 0 278529129 806912 107 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134662703 0 0 4096 0 0 0 0 17 1 0 0
/proc/20840/statm: 197 107 47 123 0 72 0

[startup+0.106953 s]
/proc/loadavg: 0.00 0.03 0.33 3/64 20840
/proc/meminfo: memFree=1858616/2055920 swapFree=4183972/4192956
[pid=20840] ppid=20838 vsize=2620 CPUtime=0.1
/proc/20840/stat : 20840 (march_ks) R 20838 20840 20480 0 -1 4194304 569 0 0 0 10 0 0 0 18 0 1 0 278529129 2682880 546 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134526463 0 0 4096 0 0 0 0 17 1 0 0
/proc/20840/statm: 655 546 73 123 0 530 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 2620

[startup+0.518995 s]
/proc/loadavg: 0.00 0.03 0.33 3/64 20840
/proc/meminfo: memFree=1858616/2055920 swapFree=4183972/4192956
[pid=20840] ppid=20838 vsize=2600 CPUtime=0.51
/proc/20840/stat : 20840 (march_ks) R 20838 20840 20480 0 -1 4194304 569 0 0 0 51 0 0 0 21 0 1 0 278529129 2662400 546 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134538194 0 0 4096 0 0 0 0 17 1 0 0
/proc/20840/statm: 650 546 73 123 0 525 0
Current children cumulated CPU time (s) 0.51
Current children cumulated vsize (KiB) 2600

[startup+1.34108 s]
/proc/loadavg: 0.16 0.06 0.34 2/65 20841
/proc/meminfo: memFree=1856624/2055920 swapFree=4183972/4192956
[pid=20840] ppid=20838 vsize=2728 CPUtime=1.33
/proc/20840/stat : 20840 (march_ks) R 20838 20840 20480 0 -1 4194304 590 0 0 0 133 0 0 0 25 0 1 0 278529129 2793472 567 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134538131 0 0 4096 0 0 0 0 17 1 0 0
/proc/20840/statm: 682 567 73 123 0 557 0
Current children cumulated CPU time (s) 1.33
Current children cumulated vsize (KiB) 2728

[startup+2.97726 s]
/proc/loadavg: 0.16 0.06 0.34 2/65 20841
/proc/meminfo: memFree=1856368/2055920 swapFree=4183972/4192956
[pid=20840] ppid=20838 vsize=2856 CPUtime=2.97
/proc/20840/stat : 20840 (march_ks) R 20838 20840 20480 0 -1 4194304 614 0 0 0 297 0 0 0 25 0 1 0 278529129 2924544 591 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134526432 0 0 4096 0 0 0 0 17 1 0 0
/proc/20840/statm: 714 591 73 123 0 589 0
Current children cumulated CPU time (s) 2.97
Current children cumulated vsize (KiB) 2856

[startup+6.2536 s]
/proc/loadavg: 0.23 0.07 0.34 2/65 20841
/proc/meminfo: memFree=1856240/2055920 swapFree=4183972/4192956
[pid=20840] ppid=20838 vsize=2980 CPUtime=6.24
/proc/20840/stat : 20840 (march_ks) R 20838 20840 20480 0 -1 4194304 643 0 0 0 624 0 0 0 25 0 1 0 278529129 3051520 620 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134526443 0 0 4096 0 0 0 0 17 1 0 0
/proc/20840/statm: 745 620 73 123 0 620 0
Current children cumulated CPU time (s) 6.24
Current children cumulated vsize (KiB) 2980

[startup+12.7093 s]
/proc/loadavg: 0.29 0.09 0.34 2/65 20841
/proc/meminfo: memFree=1855984/2055920 swapFree=4183972/4192956
[pid=20840] ppid=20838 vsize=3112 CPUtime=12.7
/proc/20840/stat : 20840 (march_ks) R 20838 20840 20480 0 -1 4194304 673 0 0 0 1270 0 0 0 25 0 1 0 278529129 3186688 650 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134538016 0 0 4096 0 0 0 0 17 1 0 0
/proc/20840/statm: 778 650 73 123 0 653 0
Current children cumulated CPU time (s) 12.7
Current children cumulated vsize (KiB) 3112

[startup+25.5096 s]
/proc/loadavg: 0.40 0.12 0.35 2/65 20841
/proc/meminfo: memFree=1855856/2055920 swapFree=4183972/4192956
[pid=20840] ppid=20838 vsize=3244 CPUtime=25.49
/proc/20840/stat : 20840 (march_ks) R 20838 20840 20480 0 -1 4194304 707 0 0 0 2549 0 0 0 25 0 1 0 278529129 3321856 684 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134542945 0 0 4096 0 0 0 0 17 1 0 0
/proc/20840/statm: 811 684 73 123 0 686 0
Current children cumulated CPU time (s) 25.49
Current children cumulated vsize (KiB) 3244

[startup+51.1163 s]
/proc/loadavg: 0.63 0.20 0.37 2/65 20841
/proc/meminfo: memFree=1855664/2055920 swapFree=4183972/4192956
[pid=20840] ppid=20838 vsize=3372 CPUtime=51.09
/proc/20840/stat : 20840 (march_ks) R 20838 20840 20480 0 -1 4194304 744 0 0 0 5109 0 0 0 25 0 1 0 278529129 3452928 721 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134538585 0 0 4096 0 0 0 0 17 1 0 0
/proc/20840/statm: 843 721 73 123 0 718 0
Current children cumulated CPU time (s) 51.09
Current children cumulated vsize (KiB) 3372

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

[startup+52.4515 s]
/proc/loadavg: 0.63 0.20 0.37 2/65 20841
/proc/meminfo: memFree=1855664/2055920 swapFree=4183972/4192956
[pid=20840] ppid=20838 vsize=3372 CPUtime=52.43
/proc/20840/stat : 20840 (march_ks) R 20838 20840 20480 0 -1 4194304 746 0 0 0 5243 0 0 0 25 0 1 0 278529129 3452928 723 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134538152 0 0 4096 0 0 0 0 17 1 0 0
/proc/20840/statm: 843 723 73 123 0 718 0
Current children cumulated CPU time (s) 52.43
Current children cumulated vsize (KiB) 3372

[startup+54.0867 s]
/proc/loadavg: 0.63 0.20 0.37 2/65 20841
/proc/meminfo: memFree=1855664/2055920 swapFree=4183972/4192956
[pid=20840] ppid=20838 vsize=3372 CPUtime=54.06
/proc/20840/stat : 20840 (march_ks) R 20838 20840 20480 0 -1 4194304 746 0 0 0 5406 0 0 0 25 0 1 0 278529129 3452928 723 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134564571 0 0 4096 0 0 0 0 17 1 0 0
/proc/20840/statm: 843 723 73 123 0 718 0
Current children cumulated CPU time (s) 54.06
Current children cumulated vsize (KiB) 3372

[startup+55.7268 s]
/proc/loadavg: 0.63 0.20 0.37 2/65 20841
/proc/meminfo: memFree=1855664/2055920 swapFree=4183972/4192956
[pid=20840] ppid=20838 vsize=3372 CPUtime=55.7
/proc/20840/stat : 20840 (march_ks) R 20838 20840 20480 0 -1 4194304 748 0 0 0 5570 0 0 0 25 0 1 0 278529129 3452928 725 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134538160 0 0 4096 0 0 0 0 17 1 0 0
/proc/20840/statm: 843 725 73 123 0 718 0
Current children cumulated CPU time (s) 55.7
Current children cumulated vsize (KiB) 3372

[startup+56.1349 s]
/proc/loadavg: 0.63 0.20 0.37 2/65 20841
/proc/meminfo: memFree=1855664/2055920 swapFree=4183972/4192956
[pid=20840] ppid=20838 vsize=3372 CPUtime=56.11
/proc/20840/stat : 20840 (march_ks) R 20838 20840 20480 0 -1 4194304 749 0 0 0 5611 0 0 0 25 0 1 0 278529129 3452928 726 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134538116 0 0 4096 0 0 0 0 17 1 0 0
/proc/20840/statm: 843 726 73 123 0 718 0
Current children cumulated CPU time (s) 56.11
Current children cumulated vsize (KiB) 3372

[startup+56.5469 s]
/proc/loadavg: 0.66 0.21 0.37 2/65 20841
/proc/meminfo: memFree=1855664/2055920 swapFree=4183972/4192956
[pid=20840] ppid=20838 vsize=3372 CPUtime=56.52
/proc/20840/stat : 20840 (march_ks) R 20838 20840 20480 0 -1 4194304 751 0 0 0 5652 0 0 0 25 0 1 0 278529129 3452928 728 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134538105 0 0 4096 0 0 0 0 17 1 0 0
/proc/20840/statm: 843 728 73 123 0 718 0
Current children cumulated CPU time (s) 56.52
Current children cumulated vsize (KiB) 3372

[startup+56.6489 s]
/proc/loadavg: 0.66 0.21 0.37 2/65 20841
/proc/meminfo: memFree=1855664/2055920 swapFree=4183972/4192956
[pid=20840] ppid=20838 vsize=0 CPUtime=56.56
/proc/20840/stat : 20840 (march_ks) D 20838 20840 20480 0 -1 4194308 752 0 0 0 5656 0 0 0 25 0 1 0 278529129 0 0 18446744073709551615 0 0 0 0 0 0 0 4096 0 18446744072100051646 0 0 17 1 0 0
/proc/20840/statm: 0 0 0 0 0 0 0
Current children cumulated CPU time (s) 56.56
Current children cumulated vsize (KiB) 0

Child status: 20
Real time (s): 56.7019
CPU time (s): 56.5714
CPU user time (s): 56.5664
CPU system time (s): 0.004999
CPU usage (%): 99.7699
Max. virtual memory (cumulated for all children) (KiB): 3372

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 56.5664
system time used= 0.004999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 752
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= 108

runsolver used 0.036994 second user time and 0.12798 second system time

The end

Launcher Data (download as text)

Begin job on node67 on Tue Feb 27 14:14:41 UTC 2007

IDJOB= 312303
IDBENCH= 20338
IDSOLVER= 111
FILE ID= node67/312303-1172585461

PBS_JOBID= 3971927

Free space on /tmp= 66558 MiB

SOLVER NAME= March KS 2007-02-08
BENCH NAME= HOME/pub/bench/SAT07/random/2+p/p0.8/v1665/unif2p-p0.8-v1665-c5178-S1439774943-07-UNSAT.cnf
COMMAND LINE= /tmp/evaluation/312303-1172585461/march_ks /tmp/evaluation/312303-1172585461/instance-312303-1172585461.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node67/watcher-312303-1172585461 -o ROOT/results/node67/solver-312303-1172585461 -C 1200 -M 1800 --output-limit 1,15  /tmp/evaluation/312303-1172585461/march_ks /tmp/evaluation/312303-1172585461/instance-312303-1172585461.cnf            

META MD5SUM SOLVER= cd0143c15836d32fe9acb8d523a59b67
MD5SUM BENCH=  a3885eff2851f09f9ef1a5d548225d79

RANDOM SEED= 586922313

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node67.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		: 3000.236
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		: 3000.236
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:       1858952 kB
Buffers:         25192 kB
Cached:         124488 kB
SwapCached:       3252 kB
Active:          81888 kB
Inactive:        77696 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1858952 kB
SwapTotal:     4192956 kB
SwapFree:      4183972 kB
Dirty:            2352 kB
Writeback:           0 kB
Mapped:          15412 kB
Slab:            23304 kB
Committed_AS:   778504 kB
PageTables:       1452 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= 66558 MiB

End job on node67 on Tue Feb 27 14:17:34 UTC 2007