Trace number 1726347

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
SAT07 reference solver: March KS 2007-02-08SAT 0.025995 0.0256089

General information on the benchmark

Namecrafted/Medium/contest05/jarvisalo/
mod2-rand3bip-sat-250-3.sat05-2220.reshuffled-07.cnf
MD5SUMb79b003513b2a70c9b89188422a831e2
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 variables250
Number of clauses1000
Sum of the clauses size3000
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 31000
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

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 250 variables and 1000 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 250 free variables and 1000 clauses.
0.00/0.02	c stat :: sign balance is biased by 0.000
0.00/0.02	c find_equivalence():: found 250 3-equivalences
0.00/0.02	c find_and_remove_tautogolies():: found and removed 3 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, 1000 satisfied and 0 duplicate clauses
0.00/0.02	c lessRedundantTransformation():: nothing to be done.
0.00/0.02	c transformTo3SAT():: you gave me 250 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 250 variabels and 0 clauses.
0.00/0.02	c main():: clause / variable ratio: ( 0 / 250 ) = 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: 3
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 -239 240 241 242 -243 -244 245 -246 -247 248 249 -250 0

Verifier Data 

OK

Watcher Data 

runsolver version 3.2.9 (svn:492) (c) roussel@cril.univ-artois.fr

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-1726347-1240711022/watcher-1726347-1240711022 -o /tmp/evaluation-result-1726347-1240711022/solver-1726347-1240711022 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/march_ks HOME/instance-1726347-1240711022.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: 0.91 0.97 0.99 3/64 4039
/proc/meminfo: memFree=1794376/2055920 swapFree=4192812/4192956
[pid=4039] ppid=4037 vsize=792 CPUtime=0
/proc/4039/stat : 4039 (march_ks) R 4037 4039 3739 0 -1 4194304 121 0 0 0 0 0 0 0 18 0 1 0 99131094 811008 104 1992294400 134512640 135019032 4294956224 18446744073709551615 134662703 0 0 4096 0 0 0 0 17 0 0 0
/proc/4039/statm: 198 105 62 123 0 73 0

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

Child status: 10
Real time (s): 0.0256089
CPU time (s): 0.025995
CPU user time (s): 0.023996
CPU system time (s): 0.001999
CPU usage (%): 101.508
Max. virtual memory (cumulated for all children) (KiB): 0

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.023996
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= 191
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= 2
involuntary context switches= 0

runsolver used 0.002999 second user time and 0.003999 second system time

The end

Launcher Data 

Begin job on node75 at 2009-04-26 03:57:02
IDJOB=1726347
IDBENCH=24610
IDSOLVER=559
FILE ID=node75/1726347-1240711022
PBS_JOBID= 9186814
Free space on /tmp= 66432 MiB

SOLVER NAME= SAT07 reference solver: March KS 2007-02-08
BENCH NAME= SAT07/crafted/Medium/contest05/jarvisalo/mod2-rand3bip-sat-250-3.sat05-2220.reshuffled-07.cnf
COMMAND LINE= HOME/march_ks BENCHNAME            
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1726347-1240711022/watcher-1726347-1240711022 -o /tmp/evaluation-result-1726347-1240711022/solver-1726347-1240711022 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/march_ks HOME/instance-1726347-1240711022.cnf            

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

MD5SUM BENCH= b79b003513b2a70c9b89188422a831e2
RANDOM SEED=820667562

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:       1794920 kB
Buffers:         31512 kB
Cached:         153992 kB
SwapCached:          0 kB
Active:          88400 kB
Inactive:       110996 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1794920 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:            2880 kB
Writeback:           0 kB
Mapped:          23660 kB
Slab:            47592 kB
Committed_AS:   253116 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= 66428 MiB
End job on node75 at 2009-04-26 03:57:02