Trace number 310786

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 3.79742 3.80077

General information on the benchmark

Namerandom/2+p/p0.8/v1295/
unif2p-p0.8-v1295-c4027-S1665384822-14-SAT.cnf
MD5SUMbe7dc6f6bf5d0d6359adfd321a4b6af2
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.036993
Satisfiable
(Un)Satisfiability was proved
Number of variables1295
Number of clauses4026
Sum of the clauses size11273
Maximum clause length3
Minimum clause length2
Number of clauses of size 10
Number of clauses of size 2805
Number of clauses of size 33221
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data (download as text)

0.00/0.04	c main():: ***                                   [ march satisfiability solver ]                                   ***
0.00/0.04	c main()::  **            Copyright (C) 2001-2004 M. Dufour, M. Heule, J. van Zwieten and H. van Maaren            **
0.00/0.04	c main()::   * This program may be redistributed and/or modified under the terms of the GNU Gereral Public License *
0.00/0.04	c main()::
0.00/0.04	c initFormula():: searching for DIMACS p-line....
0.00/0.04	c initFormula():: the DIMACS p-line indicates a CNF of 1295 variables and 4026 clauses.
0.00/0.04	c parseCNF():: parsing....
0.00/0.04	c parseCNF():: the CNF contains 0 unary clauses.
0.00/0.04	c runParser():: parsing was successful, warming up engines...
0.00/0.04	c simplify_formula():: removed 0 tautological, 131 satisfied and 0 duplicate clauses
0.00/0.04	c preprocessing fase I completed:: there are now 1267 free variables and 3895 clauses.
0.00/0.04	c stat :: sign balance is biased by 0.729
0.00/0.04	c shorten_equivalence(): average equivalence length reduced from nan to nan
0.00/0.04	c using 3-SAT heuristics (occurence based diff)
0.00/0.04	c longest clause has size 3
0.00/0.04	c simplify_formula():: removed 0 tautological, 0 satisfied and 65 duplicate clauses
0.00/0.04	c resolvent_look() :: found 30 resolvents
0.00/0.04	c lessRedundantTransformation():: nothing to be done.
0.00/0.04	c transformTo3SAT():: you gave me 1295 variables and 3925 clauses.
0.00/0.04	c transformTo3SAT():: by the way, the maximal clause length before transformation was 3.
0.00/0.04	c transformTo3SAT():: I will add 0 variables and 0 clauses!
0.00/0.04	c transformTo3SAT():: the transformation yielded 1295 variabels and 3925 clauses.
0.00/0.04	c main():: clause / variable ratio: ( 3925 / 1295 ) = 3.03
0.00/0.04	c longest clause has size 3
0.00/0.04	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
0.00/0.04	c dynamic_preselect_setsize :: on
0.00/0.04	c suggested doublelook initial :: 0
0.00/0.04	c main():: all systems go!
0.00/0.04	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |********************************
c |****************************************************************| 0 NC: 156 JD: 21
0.71/0.81	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |********************************
c |*********************************
c |**********************************
c |************************************
c |****************************************
c |************************************************
c |*************************************************
c |**************************************************
c |****************************************************
c |********************************************************
c |*********************************************************
c |**********************************************************
c |************************************************************
c |*************************************************************
c |**************************************************************
c |***************************************************************
c |****************************************************************| 1 NC: 886 JD: 21
3.17/3.18	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |*****************
c |******************
c |********************
c |************************
c |*************************
c |**************************
c |****************************
c |*****************************
c |******************************
c |*******************************
3.78/3.79	c solution bin :: 100000010000000000000.01001010001
3.78/3.79	c direction branchin :: current_rights = 6
3.78/3.79	
c |*******************************
3.78/3.79	c
3.78/3.79	c main():: nodeCount: 1259
3.78/3.79	c main():: dead ends in main: 0
3.78/3.79	c main():: lookAheadCount: 525507
3.78/3.79	c main():: unitResolveCount: 24270
3.78/3.79	c main():: time=3.790000
3.78/3.79	c main():: necessary_assignments: 586
3.78/3.79	c main():: bin_sat: 0, bin_unsat 0
3.78/3.79	c main():: doublelook: #: 8277, succes #: 6420
3.78/3.79	c main():: doublelook: overall 1.589 of all possible doublelooks executed
3.78/3.79	c main():: doublelook: succesrate: 77.564, average DL_trigger: 9353.181
3.78/3.79	c main():: SOLUTION VERIFIED :-)
3.78/3.79	s SATISFIABLE
3.78/3.79	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 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Verifier Data (download as text)

OK

Watcher Data (download as text)

runsolver version 3.2.0 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node38/watcher-310786-1172561919 -o ROOT/results/node38/solver-310786-1172561919 -C 1200 -M 1800 --output-limit 1,15 /tmp/evaluation/310786-1172561919/march_ks /tmp/evaluation/310786-1172561919/instance-310786-1172561919.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: 0.92 0.97 0.99 2/64 29124
/proc/meminfo: memFree=1873952/2055920 swapFree=4183692/4192956
[pid=29124] ppid=29122 vsize=788 CPUtime=0
/proc/29124/stat : 29124 (march_ks) R 29122 29124 28181 0 -1 4194304 115 0 0 0 0 0 0 0 18 0 1 0 276147705 806912 100 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134662703 0 0 4096 0 0 0 0 17 1 0 0
/proc/29124/statm: 197 100 47 123 0 72 0

[startup+0.106844 s]
/proc/loadavg: 0.92 0.97 0.99 2/64 29124
/proc/meminfo: memFree=1873952/2055920 swapFree=4183692/4192956
[pid=29124] ppid=29122 vsize=2168 CPUtime=0.1
/proc/29124/stat : 29124 (march_ks) R 29122 29124 28181 0 -1 4194304 465 0 0 0 10 0 0 0 18 0 1 0 276147705 2220032 447 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134597988 0 0 4096 0 0 0 0 17 1 0 0
/proc/29124/statm: 542 447 73 123 0 417 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 2168

[startup+0.514889 s]
/proc/loadavg: 0.92 0.97 0.99 2/64 29124
/proc/meminfo: memFree=1873952/2055920 swapFree=4183692/4192956
[pid=29124] ppid=29122 vsize=2168 CPUtime=0.51
/proc/29124/stat : 29124 (march_ks) R 29122 29124 28181 0 -1 4194304 475 0 0 0 51 0 0 0 21 0 1 0 276147705 2220032 457 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134538215 0 0 4096 0 0 0 0 17 1 0 0
/proc/29124/statm: 542 457 73 123 0 417 0
Current children cumulated CPU time (s) 0.51
Current children cumulated vsize (KiB) 2168

[startup+1.33498 s]
/proc/loadavg: 0.92 0.97 0.99 2/65 29125
/proc/meminfo: memFree=1872344/2055920 swapFree=4183692/4192956
[pid=29124] ppid=29122 vsize=2300 CPUtime=1.33
/proc/29124/stat : 29124 (march_ks) R 29122 29124 28181 0 -1 4194304 502 0 0 0 133 0 0 0 25 0 1 0 276147705 2355200 484 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134538152 0 0 4096 0 0 0 0 17 1 0 0
/proc/29124/statm: 575 484 73 123 0 450 0
Current children cumulated CPU time (s) 1.33
Current children cumulated vsize (KiB) 2300

[startup+2.97117 s]
/proc/loadavg: 0.92 0.97 0.99 2/65 29125
/proc/meminfo: memFree=1872152/2055920 swapFree=4183692/4192956
[pid=29124] ppid=29122 vsize=2488 CPUtime=2.96
/proc/29124/stat : 29124 (march_ks) R 29122 29124 28181 0 -1 4194304 527 0 0 0 296 0 0 0 25 0 1 0 276147705 2547712 509 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134538152 0 0 4096 0 0 0 0 17 1 0 0
/proc/29124/statm: 622 509 73 123 0 497 0
Current children cumulated CPU time (s) 2.96
Current children cumulated vsize (KiB) 2488

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

[startup+3.2772 s]
/proc/loadavg: 0.92 0.97 0.99 2/65 29125
/proc/meminfo: memFree=1872152/2055920 swapFree=4183692/4192956
[pid=29124] ppid=29122 vsize=2488 CPUtime=3.27
/proc/29124/stat : 29124 (march_ks) R 29122 29124 28181 0 -1 4194304 529 0 0 0 327 0 0 0 25 0 1 0 276147705 2547712 511 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134526533 0 0 4096 0 0 0 0 17 1 0 0
/proc/29124/statm: 622 511 73 123 0 497 0
Current children cumulated CPU time (s) 3.27
Current children cumulated vsize (KiB) 2488

[startup+3.68925 s]
/proc/loadavg: 0.93 0.97 0.99 2/65 29125
/proc/meminfo: memFree=1872088/2055920 swapFree=4183692/4192956
[pid=29124] ppid=29122 vsize=2488 CPUtime=3.68
/proc/29124/stat : 29124 (march_ks) R 29122 29124 28181 0 -1 4194304 533 0 0 0 368 0 0 0 25 0 1 0 276147705 2547712 515 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134538162 0 0 4096 0 0 0 0 17 1 0 0
/proc/29124/statm: 622 515 73 123 0 497 0
Current children cumulated CPU time (s) 3.68
Current children cumulated vsize (KiB) 2488

[startup+3.79126 s]
/proc/loadavg: 0.93 0.97 0.99 2/65 29125
/proc/meminfo: memFree=1872088/2055920 swapFree=4183692/4192956
[pid=29124] ppid=29122 vsize=2488 CPUtime=3.78
/proc/29124/stat : 29124 (march_ks) R 29122 29124 28181 0 -1 4194304 546 0 0 0 378 0 0 0 25 0 1 0 276147705 2547712 528 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134598460 0 0 4096 0 0 0 0 17 1 0 0
/proc/29124/statm: 622 528 73 123 0 497 0
Current children cumulated CPU time (s) 3.78
Current children cumulated vsize (KiB) 2488

Child status: 10
Real time (s): 3.80077
CPU time (s): 3.79742
CPU user time (s): 3.79342
CPU system time (s): 0.003999
CPU usage (%): 99.912
Max. virtual memory (cumulated for all children) (KiB): 2488

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 3.79342
system time used= 0.003999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 549
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= 4

runsolver used 0.006998 second user time and 0.009998 second system time

The end

Launcher Data (download as text)

Begin job on node38 on Tue Feb 27 07:38:39 UTC 2007

IDJOB= 310786
IDBENCH= 20296
IDSOLVER= 111
FILE ID= node38/310786-1172561919

PBS_JOBID= 3971865

Free space on /tmp= 66558 MiB

SOLVER NAME= March KS 2007-02-08
BENCH NAME= HOME/pub/bench/SAT07/random/2+p/p0.8/v1295/unif2p-p0.8-v1295-c4027-S1665384822-14-SAT.cnf
COMMAND LINE= /tmp/evaluation/310786-1172561919/march_ks /tmp/evaluation/310786-1172561919/instance-310786-1172561919.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node38/watcher-310786-1172561919 -o ROOT/results/node38/solver-310786-1172561919 -C 1200 -M 1800 --output-limit 1,15  /tmp/evaluation/310786-1172561919/march_ks /tmp/evaluation/310786-1172561919/instance-310786-1172561919.cnf            

META MD5SUM SOLVER= cd0143c15836d32fe9acb8d523a59b67
MD5SUM BENCH=  be7dc6f6bf5d0d6359adfd321a4b6af2

RANDOM SEED= 612627442

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node38.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		: 3000.233
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		: 3000.233
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:       1874424 kB
Buffers:         22572 kB
Cached:         111796 kB
SwapCached:       3468 kB
Active:          73952 kB
Inactive:        70280 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1874424 kB
SwapTotal:     4192956 kB
SwapFree:      4183692 kB
Dirty:            2324 kB
Writeback:           0 kB
Mapped:          15320 kB
Slab:            23272 kB
Committed_AS:   575968 kB
PageTables:       1468 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 node38 on Tue Feb 27 07:38:43 UTC 2007