Trace number 333407

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 0.017996 0.019778

General information on the benchmark

Namecrafted/Medium/contest05/jarvisalo/
mod2-rand3bip-sat-220-2.sat05-2174.reshuffled-07.cnf
MD5SUMa29014c1083fbe8ff0da4344f4f9d84f
Bench CategoryCRAFTED (crafted instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.009997
Satisfiable
(Un)Satisfiability was proved
Number of variables220
Number of clauses880
Sum of the clauses size2640
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 3880
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data (download as text)

0.00/0.01	c main():: ***                                   [ march satisfiability solver ]                                   ***
0.00/0.01	c main()::  **            Copyright (C) 2001-2004 M. Dufour, M. Heule, J. van Zwieten and H. van Maaren            **
0.00/0.01	c main()::   * This program may be redistributed and/or modified under the terms of the GNU Gereral Public License *
0.00/0.01	c main()::
0.00/0.01	c initFormula():: searching for DIMACS p-line....
0.00/0.01	c initFormula():: the DIMACS p-line indicates a CNF of 220 variables and 880 clauses.
0.00/0.01	c parseCNF():: parsing....
0.00/0.01	c parseCNF():: the CNF contains 0 unary clauses.
0.00/0.01	c runParser():: parsing was successful, warming up engines...
0.00/0.01	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
0.00/0.01	c preprocessing fase I completed:: there are now 220 free variables and 880 clauses.
0.00/0.01	c stat :: sign balance is biased by 0.000
0.00/0.01	c find_equivalence():: found 220 3-equivalences
0.00/0.01	c find_and_remove_tautogolies():: found and removed 2 tautologies
0.00/0.01	c shorten_equivalence(): average equivalence length reduced from nan to nan
0.00/0.01	c using 3-SAT heuristics (occurence based diff)
0.00/0.01	c longest clause has size 0
0.00/0.01	c simplify_formula():: removed 0 tautological, 880 satisfied and 0 duplicate clauses
0.00/0.01	c lessRedundantTransformation():: nothing to be done.
0.00/0.01	c transformTo3SAT():: you gave me 220 variables and 0 clauses.
0.00/0.01	c transformTo3SAT():: by the way, the maximal clause length before transformation was 0.
0.00/0.01	c transformTo3SAT():: I will add 0 variables and 0 clauses!
0.00/0.01	c transformTo3SAT():: the transformation yielded 220 variabels and 0 clauses.
0.00/0.01	c main():: clause / variable ratio: ( 0 / 220 ) = 0.00
0.00/0.01	c longest clause has size 0
0.00/0.01	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
0.00/0.01	c dynamic_preselect_setsize :: off
0.00/0.01	c suggested doublelook initial :: 0
0.00/0.01	c main():: all systems go!
0.00/0.01	c |----------------------------------------------------------------|
0.00/0.01	c solution bin :: .00000000000000000000000000000000
0.00/0.01	c direction branchin :: current_rights = 0
0.00/0.01	
c |
0.00/0.01	c
0.00/0.01	c main():: nodeCount: 1
0.00/0.01	c main():: dead ends in main: 0
0.00/0.01	c main():: lookAheadCount: 0
0.00/0.01	c main():: unitResolveCount: 2
0.00/0.01	c main():: time=0.010000
0.00/0.01	c main():: necessary_assignments: 0
0.00/0.01	c main():: bin_sat: 0, bin_unsat 0
0.00/0.01	c main():: doublelook: #: 0, succes #: 0
0.00/0.01	c main():: doublelook: overall nan of all possible doublelooks executed
0.00/0.01	c main():: doublelook: succesrate: nan, average DL_trigger: nan
0.00/0.01	c main():: SOLUTION VERIFIED :-)
0.00/0.01	s SATISFIABLE
0.00/0.01	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 -81 82 83 -84 85 -86 -87 -88 -89 -90 -91 92 -93 94 95 96 97 98 -99 -100 101 102 -103 -104 -105 106 107 108 109 110 111 -112 113 114 -115 -116 117 118 -119 -120 -121 -122 123 -124 125 126 127 -128 129 130 131 -132 -133 134 135 136 -137 -138 139 -140 141 142 143 -144 145 146 147 -148 149 150 151 -152 153 154 -155 -156 -157 158 159 160 -161 -162 -163 -164 165 166 -167 168 -169 -170 -171 172 -173 -174 -175 176 -177 -178 179 180 181 -182 183 184 185 186 -187 -188 -189 -190 -191 192 -193 194 195 196 197 -198 199 -200 -201 -202 -203 204 205 -206 -207 208 209 -210 211 -212 -213 -214 -215 216 217 218 219 -220 0

Verifier Data (download as text)

OK

Watcher Data (download as text)

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

command line: runsolver --timestamp -w ROOT/results/node10/watcher-333407-1173513907 -o ROOT/results/node10/solver-333407-1173513907 -C 1200 -W 2400 -M 1800 --output-limit 1,15 /tmp/evaluation/333407-1173513907/march_ks /tmp/evaluation/333407-1173513907/instance-333407-1173513907.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: 0.92 0.98 0.99 3/77 21353
/proc/meminfo: memFree=1729976/2055920 swapFree=4168784/4192956
[pid=21353] ppid=21351 vsize=792 CPUtime=0
/proc/21353/stat : 21353 (march_ks) R 21351 21353 20222 0 -1 4194304 124 0 0 0 0 0 0 0 18 0 1 0 371345703 811008 106 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134662703 0 0 4096 0 0 0 0 17 1 0 0
/proc/21353/statm: 198 106 62 123 0 73 0

[startup+0.00873901 s]
/proc/loadavg: 0.92 0.98 0.99 3/77 21353
/proc/meminfo: memFree=1729976/2055920 swapFree=4168784/4192956
[pid=21353] ppid=21351 vsize=792 CPUtime=0
/proc/21353/stat : 21353 (march_ks) R 21351 21353 20222 0 -1 4194304 141 0 0 0 0 0 0 0 18 0 1 0 371345703 811008 123 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134662703 0 0 4096 0 0 0 0 17 1 0 0
/proc/21353/statm: 198 123 62 123 0 73 0
Current children cumulated CPU time (s) 0
Current children cumulated vsize (KiB) 792

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

[startup+0.00873901 s]
/proc/loadavg: 0.92 0.98 0.99 3/77 21353
/proc/meminfo: memFree=1729976/2055920 swapFree=4168784/4192956
[pid=21353] ppid=21351 vsize=792 CPUtime=0
/proc/21353/stat : 21353 (march_ks) R 21351 21353 20222 0 -1 4194304 141 0 0 0 0 0 0 0 18 0 1 0 371345703 811008 123 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134662703 0 0 4096 0 0 0 0 17 1 0 0
/proc/21353/statm: 198 123 62 123 0 73 0
Current children cumulated CPU time (s) 0
Current children cumulated vsize (KiB) 792

Child status: 10
Real time (s): 0.019778
CPU time (s): 0.017996
CPU user time (s): 0.014997
CPU system time (s): 0.002999
CPU usage (%): 90.9898
Max. virtual memory (cumulated for all children) (KiB): 792

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.014997
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= 180
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= 0

runsolver used 0.003999 second user time and 0.004999 second system time

The end

Launcher Data (download as text)

Begin job on node10 on Sat Mar 10 08:05:07 UTC 2007

IDJOB= 333407
IDBENCH= 24603
IDSOLVER= 111
FILE ID= node10/333407-1173513907

PBS_JOBID= 4101117

Free space on /tmp= 66503 MiB

SOLVER NAME= March KS 2007-02-08
BENCH NAME= HOME/pub/bench/SAT07/crafted/Medium/contest05/jarvisalo/mod2-rand3bip-sat-220-2.sat05-2174.reshuffled-07.cnf
COMMAND LINE= /tmp/evaluation/333407-1173513907/march_ks /tmp/evaluation/333407-1173513907/instance-333407-1173513907.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node10/watcher-333407-1173513907 -o ROOT/results/node10/solver-333407-1173513907 -C 1200 -W 2400 -M 1800 --output-limit 1,15  /tmp/evaluation/333407-1173513907/march_ks /tmp/evaluation/333407-1173513907/instance-333407-1173513907.cnf            

META MD5SUM SOLVER= cd0143c15836d32fe9acb8d523a59b67
MD5SUM BENCH=  a29014c1083fbe8ff0da4344f4f9d84f

RANDOM SEED= 856351230

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node10.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		: 3000.232
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		: 3000.232
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:       1730448 kB
Buffers:         40204 kB
Cached:         202132 kB
SwapCached:       2600 kB
Active:         150624 kB
Inactive:       114764 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1730448 kB
SwapTotal:     4192956 kB
SwapFree:      4168784 kB
Dirty:            2296 kB
Writeback:           0 kB
Mapped:          30540 kB
Slab:            45676 kB
Committed_AS:  1675620 kB
PageTables:       1832 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= 66503 MiB

End job on node10 on Sat Mar 10 08:05:07 UTC 2007