Trace number 1730875

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
march_nn nnSAT 0.031995 0.032279

General information on the benchmark

Namecrafted/Difficult/contest05/jarvisalo/
mod2-rand3bip-sat-280-1.sat05-2263.reshuffled-07.cnf
MD5SUM5c670fd8fd3fa9f00ac6df3f4ca9c99c
Bench CategoryCRAFTED (crafted instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.014997
Satisfiable
(Un)Satisfiability was proved
Number of variables280
Number of clauses1120
Sum of the clauses size3360
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 31120
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

0.01/0.03	c main():: ***                                   [ march satisfiability solver ]                                   ***
0.01/0.03	c main()::  **                Copyright (C) 2001-2009 M.J.H. Heule, J.E. van Zwieten, and M. Dufour                 **
0.01/0.03	c main()::   *  This program may be redistributed and/or modified under the terms of the GNU Gereral Public License  *
0.01/0.03	c main()::
0.01/0.03	c initFormula():: searching for DIMACS p-line....
0.01/0.03	c initFormula():: the DIMACS p-line indicates a CNF of 280 variables and 1120 clauses.
0.01/0.03	c parseCNF():: parsing....
0.01/0.03	c parseCNF():: the CNF contains 0 unary clauses.
0.01/0.03	c runParser():: parsing was successful, warming up engines...
0.01/0.03	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
0.01/0.03	c preprocessing fase I completed:: there are now 280 free variables and 1120 clauses.
0.01/0.03	c stat :: sign balance is biased by 0.000
0.01/0.03	c find_equivalence():: found 280 3-equivalences
0.01/0.03	c find_and_remove_tautogolies():: found and removed 8 tautologies
0.01/0.03	c using 3-SAT heuristics (occurence based diff)
0.01/0.03	c simplify_formula():: removed 0 tautological, 1120 satisfied and 0 duplicate clauses
0.01/0.03	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
0.01/0.03	c lessRedundantTransformation():: nothing to be done.
0.01/0.03	c transformTo3SAT():: you gave me 280 variables and 0 clauses.
0.01/0.03	c transformTo3SAT():: by the way, the maximal clause length before transformation was 0.
0.01/0.03	c transformTo3SAT():: I will add 0 variables and 0 clauses!
0.01/0.03	c transformTo3SAT():: the transformation yielded 280 variabels and 0 clauses.
0.01/0.03	c main():: clause / variable ratio: ( 0 / 280 ) = 0.00
0.01/0.03	c longest clause has size 0
0.01/0.03	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
0.01/0.03	c number of free variables = 0
0.01/0.03	c dynamic_preselect_setsize :: off
0.01/0.03	c main():: all systems go!
0.01/0.03	c |----------------------------------------------------------------|
0.01/0.03	c |0$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$|
0.01/0.03	
c |
0.01/0.03	c
0.01/0.03	c main():: nodeCount: 1
0.01/0.03	c main():: dead ends in main: 0
0.01/0.03	c main():: lookAheadCount: 0
0.01/0.03	c main():: unitResolveCount: 8
0.01/0.03	c main():: time=0.030000
0.01/0.03	c main():: necessary_assignments: 0
0.01/0.03	c main():: bin_sat: 0, bin_unsat 0
0.01/0.03	c main():: doublelook: #: 0, succes #: 0
0.01/0.03	c main():: doublelook: overall nan of all possible doublelooks executed
0.01/0.03	c main():: doublelook: succesrate: nan, average DL_trigger: nan
0.01/0.03	c main():: SOLUTION VERIFIED :-)
0.01/0.03	s SATISFIABLE
0.01/0.03	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 -251 -252 253 -254 255 256 257 258 259 260 -261 -262 -263 -264 265 -266 -267 268 269 270 -271 -272 273 -274 -275 276 277 278 279 280 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-1730875-1240764573/watcher-1730875-1240764573 -o /tmp/evaluation-result-1730875-1240764573/solver-1730875-1240764573 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/march_nn HOME/instance-1730875-1240764573.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: 0.99 0.98 0.99 3/64 11566
/proc/meminfo: memFree=1628880/2055920 swapFree=4191900/4192956
[pid=11566] ppid=11564 vsize=972 CPUtime=0
/proc/11566/stat : 11566 (march_nn) R 11564 11566 11380 0 -1 4194304 139 0 0 0 0 0 0 0 20 0 1 0 104485306 995328 122 1992294400 134512640 135197250 4294956240 18446744073709551615 134693662 0 0 4096 0 0 0 0 17 1 0 0
/proc/11566/statm: 243 122 79 167 0 74 0

[startup+0.019201 s]
/proc/loadavg: 0.99 0.98 0.99 3/64 11566
/proc/meminfo: memFree=1628880/2055920 swapFree=4191900/4192956
[pid=11566] ppid=11564 vsize=1104 CPUtime=0.01
/proc/11566/stat : 11566 (march_nn) R 11564 11566 11380 0 -1 4194304 178 0 0 0 1 0 0 0 20 0 1 0 104485306 1130496 161 1992294400 134512640 135197250 4294956240 18446744073709551615 134531586 0 0 4096 0 0 0 0 17 1 0 0
/proc/11566/statm: 276 161 79 167 0 107 0
Current children cumulated CPU time (s) 0.01
Current children cumulated vsize (KiB) 1104

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

[startup+0.019201 s]
/proc/loadavg: 0.99 0.98 0.99 3/64 11566
/proc/meminfo: memFree=1628880/2055920 swapFree=4191900/4192956
[pid=11566] ppid=11564 vsize=1104 CPUtime=0.01
/proc/11566/stat : 11566 (march_nn) R 11564 11566 11380 0 -1 4194304 178 0 0 0 1 0 0 0 20 0 1 0 104485306 1130496 161 1992294400 134512640 135197250 4294956240 18446744073709551615 134531586 0 0 4096 0 0 0 0 17 1 0 0
/proc/11566/statm: 276 161 79 167 0 107 0
Current children cumulated CPU time (s) 0.01
Current children cumulated vsize (KiB) 1104

Child status: 10
Real time (s): 0.032279
CPU time (s): 0.031995
CPU user time (s): 0.031995
CPU system time (s): 0
CPU usage (%): 99.1202
Max. virtual memory (cumulated for all children) (KiB): 1104

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.031995
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= 210
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 0.001999 second user time and 0.006998 second system time

The end

Launcher Data 

Begin job on node53 at 2009-04-26 18:49:33
IDJOB=1730875
IDBENCH=24738
IDSOLVER=522
FILE ID=node53/1730875-1240764573
PBS_JOBID= 9187142
Free space on /tmp= 66476 MiB

SOLVER NAME= march_nn nn
BENCH NAME= SAT07/crafted/Difficult/contest05/jarvisalo/mod2-rand3bip-sat-280-1.sat05-2263.reshuffled-07.cnf
COMMAND LINE= HOME/march_nn BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1730875-1240764573/watcher-1730875-1240764573 -o /tmp/evaluation-result-1730875-1240764573/solver-1730875-1240764573 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/march_nn HOME/instance-1730875-1240764573.cnf

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

MD5SUM BENCH= 5c670fd8fd3fa9f00ac6df3f4ca9c99c
RANDOM SEED=100759354

node53.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		: 3000.245
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		: 3000.245
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:       1629360 kB
Buffers:         43252 kB
Cached:         309420 kB
SwapCached:        384 kB
Active:         123628 kB
Inactive:       242348 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1629360 kB
SwapTotal:     4192956 kB
SwapFree:      4191900 kB
Dirty:             788 kB
Writeback:           0 kB
Mapped:          21772 kB
Slab:            46692 kB
Committed_AS:   318004 kB
PageTables:       1376 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= 66476 MiB
End job on node53 at 2009-04-26 18:49:33