Trace number 333743

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 0.021995 0.023283

General information on the benchmark

Namecrafted/Medium/contest05/jarvisalo/
mod2-rand3bip-sat-240-3.sat05-2205.reshuffled-07.cnf
MD5SUMfca12eef85528ed5b92dca0939473545
Bench CategoryCRAFTED (crafted instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.011997
Satisfiable
(Un)Satisfiability was proved
Number of variables240
Number of clauses960
Sum of the clauses size2880
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 3960
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data (download as text)

0.00/0.02	c main():: ***                                   [ march satisfiability solver ]                                   ***
0.00/0.02	c main()::  **            Copyright (C) 2001-2004 M. Dufour, M. Heule, J. van Zwieten and H. van Maaren            **
0.00/0.02	c main()::   * This program may be redistributed and/or modified under the terms of the GNU Gereral Public License *
0.00/0.02	c main()::
0.00/0.02	c initFormula():: searching for DIMACS p-line....
0.00/0.02	c initFormula():: the DIMACS p-line indicates a CNF of 240 variables and 960 clauses.
0.00/0.02	c parseCNF():: parsing....
0.00/0.02	c parseCNF():: the CNF contains 0 unary clauses.
0.00/0.02	c runParser():: parsing was successful, warming up engines...
0.00/0.02	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
0.00/0.02	c preprocessing fase I completed:: there are now 240 free variables and 960 clauses.
0.00/0.02	c stat :: sign balance is biased by 0.000
0.00/0.02	c find_equivalence():: found 240 3-equivalences
0.00/0.02	c find_and_remove_tautogolies():: found and removed 3 tautologies
0.00/0.02	c find_and_remove_tautogolies():: found and removed 1 tautologies
0.00/0.02	c shorten_equivalence(): average equivalence length reduced from nan to nan
0.00/0.02	c using 3-SAT heuristics (occurence based diff)
0.00/0.02	c longest clause has size 0
0.00/0.02	c simplify_formula():: removed 0 tautological, 960 satisfied and 0 duplicate clauses
0.00/0.02	c lessRedundantTransformation():: nothing to be done.
0.00/0.02	c transformTo3SAT():: you gave me 240 variables and 0 clauses.
0.00/0.02	c transformTo3SAT():: by the way, the maximal clause length before transformation was 0.
0.00/0.02	c transformTo3SAT():: I will add 0 variables and 0 clauses!
0.00/0.02	c transformTo3SAT():: the transformation yielded 240 variabels and 0 clauses.
0.00/0.02	c main():: clause / variable ratio: ( 0 / 240 ) = 0.00
0.00/0.02	c longest clause has size 0
0.00/0.02	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
0.00/0.02	c dynamic_preselect_setsize :: off
0.00/0.02	c suggested doublelook initial :: 0
0.00/0.02	c main():: all systems go!
0.00/0.02	c |----------------------------------------------------------------|
0.00/0.02	c solution bin :: .00000000000000000000000000000000
0.00/0.02	c direction branchin :: current_rights = 0
0.00/0.02	
c |
0.00/0.02	c
0.00/0.02	c main():: nodeCount: 1
0.00/0.02	c main():: dead ends in main: 0
0.00/0.02	c main():: lookAheadCount: 0
0.00/0.02	c main():: unitResolveCount: 4
0.00/0.02	c main():: time=0.020000
0.00/0.02	c main():: necessary_assignments: 0
0.00/0.02	c main():: bin_sat: 0, bin_unsat 0
0.00/0.02	c main():: doublelook: #: 0, succes #: 0
0.00/0.02	c main():: doublelook: overall nan of all possible doublelooks executed
0.00/0.02	c main():: doublelook: succesrate: nan, average DL_trigger: nan
0.00/0.02	c main():: SOLUTION VERIFIED :-)
0.00/0.02	s SATISFIABLE
0.00/0.02	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 -220 221 -222 -223 -224 225 226 -227 228 -229 -230 231 232 233 -234 -235 -236 -237 -238 239 -240 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/node6/watcher-333743-1173528757 -o ROOT/results/node6/solver-333743-1173528757 -C 1200 -W 2400 -M 1800 --output-limit 1,15 /tmp/evaluation/333743-1173528757/march_ks /tmp/evaluation/333743-1173528757/instance-333743-1173528757.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 0.94 3/77 17308
/proc/meminfo: memFree=1458560/2055924 swapFree=4156956/4192956
[pid=17308] ppid=17306 vsize=792 CPUtime=0
/proc/17308/stat : 17308 (march_ks) R 17306 17308 16226 0 -1 4194304 119 0 0 0 0 0 0 0 18 0 1 0 372830450 811008 101 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134662703 0 0 4096 0 0 0 0 17 1 0 0
/proc/17308/statm: 198 101 62 123 0 73 0

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

Child status: 10
Real time (s): 0.023283
CPU time (s): 0.021995
CPU user time (s): 0.019996
CPU system time (s): 0.001999
CPU usage (%): 94.4682
Max. virtual memory (cumulated for all children) (KiB): 0

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.019996
system time used= 0.001999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 187
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 0.002999 second user time and 0.006998 second system time

The end

Launcher Data (download as text)

Begin job on node6 on Sat Mar 10 12:12:37 UTC 2007

IDJOB= 333743
IDBENCH= 24611
IDSOLVER= 111
FILE ID= node6/333743-1173528757

PBS_JOBID= 4101140

Free space on /tmp= 66437 MiB

SOLVER NAME= March KS 2007-02-08
BENCH NAME= HOME/pub/bench/SAT07/crafted/Medium/contest05/jarvisalo/mod2-rand3bip-sat-240-3.sat05-2205.reshuffled-07.cnf
COMMAND LINE= /tmp/evaluation/333743-1173528757/march_ks /tmp/evaluation/333743-1173528757/instance-333743-1173528757.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node6/watcher-333743-1173528757 -o ROOT/results/node6/solver-333743-1173528757 -C 1200 -W 2400 -M 1800 --output-limit 1,15  /tmp/evaluation/333743-1173528757/march_ks /tmp/evaluation/333743-1173528757/instance-333743-1173528757.cnf            

META MD5SUM SOLVER= cd0143c15836d32fe9acb8d523a59b67
MD5SUM BENCH=  fca12eef85528ed5b92dca0939473545

RANDOM SEED= 605109849

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node6.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		: 3000.277
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		: 3000.277
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:      2055924 kB
MemFree:       1459032 kB
Buffers:         51344 kB
Cached:         456284 kB
SwapCached:       2236 kB
Active:         271628 kB
Inactive:       258792 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055924 kB
LowFree:       1459032 kB
SwapTotal:     4192956 kB
SwapFree:      4156956 kB
Dirty:            2300 kB
Writeback:           0 kB
Mapped:          30872 kB
Slab:            52088 kB
Committed_AS:  1315104 kB
PageTables:       1744 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= 66437 MiB

End job on node6 on Sat Mar 10 12:12:37 UTC 2007