Trace number 3152789

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_rw 2011-03-02SAT 0.18997 0.191041

General information on the benchmark

Namerandom/medium/
unif-k3-r4.26-v350-c1491-S87195105-042.SATISFIABLE.cnf
MD5SUMada5b04e33de45b97800e1e97a28e189
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.004999
Satisfiable
(Un)Satisfiability was proved
Number of variables350
Number of clauses1491
Sum of the clauses size4473
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 31491
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

0.00/0.00	c main():: ***                                   [ march satisfiability solver ]                                   ***
0.00/0.00	c main()::  **                Copyright (C) 2001-2009 M.J.H. Heule, J.E. van Zwieten, and M. Dufour                 **
0.00/0.00	c main()::   *  This program may be redistributed and/or modified under the terms of the GNU Gereral Public License  *
0.00/0.00	c main()::
0.00/0.00	c initFormula():: searching for DIMACS p-line....
0.00/0.00	c initFormula():: the DIMACS p-line indicates a CNF of 350 variables and 1491 clauses.
0.00/0.00	c parseCNF():: parsing....
0.00/0.00	c parseCNF():: the CNF contains 0 unary clauses.
0.00/0.00	c runParser():: parsing was successful, warming up engines...
0.00/0.00	c simplify_formula():: removed 0 tautological, 5 satisfied and 0 duplicate clauses
0.00/0.00	c preprocessing fase I completed:: there are now 349 free variables and 1486 clauses.
0.00/0.00	c using 3-SAT heuristics (occurence based diff)
0.00/0.00	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
0.00/0.00	c simplify_formula():: removed 0 tautological, 0 satisfied and 165 duplicate clauses
0.00/0.00	c resolvent_look() :: found 88 resolvents
0.00/0.00	c main():: clause / variable ratio: ( 1574 / 350 ) = 4.50
0.00/0.00	c longest clause has size 3
0.00/0.00	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
0.00/0.00	c number of free variables = 349
0.00/0.00	c dynamic_preselect_setsize :: off
0.00/0.00	c main():: all systems go!
0.00/0.00	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |********************************
c |****************************************************************| ( 0/14) NodeCount: 152
0.00/0.03	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |********************************
c |*********************************
c |**********************************
c |************************************
c |****************************************
c |************************************************
c |*************************************************
c |**************************************************
c |****************************************************
c |********************************************************
c |*********************************************************
c |**********************************************************
c |************************************************************
c |*************************************************************
c |**************************************************************
c |***************************************************************
c |****************************************************************| ( 1/14) NodeCount: 935
0.09/0.17	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
0.09/0.19	c |10100000000000.0000010000000$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$|
0.09/0.19	
c |****************
0.09/0.19	c
0.09/0.19	c main():: nodeCount: 1022
0.09/0.19	c main():: dead ends in main: 34
0.09/0.19	c main():: lookAheadCount: 68758
0.09/0.19	c main():: unitResolveCount: 12158
0.09/0.19	c main():: time=0.180000
0.09/0.19	c main():: necessary_assignments: 302
0.09/0.19	c main():: bin_sat: 0, bin_unsat 0
0.09/0.19	c main():: doublelook: #: 3399, succes #: 2348
0.09/0.19	c main():: doublelook: overall 5.105 of all possible doublelooks executed
0.09/0.19	c main():: doublelook: succesrate: 69.079, average DL_trigger: 43.013
0.09/0.19	c main():: SOLUTION VERIFIED :-)
0.09/0.19	s SATISFIABLE
0.09/0.19	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 -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 -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 -133 135 136 137 -138 139 -140 141 -142 -143 144 145 146 -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 -183 -184 185 -186 187 188 -189 190 -191 -192 193 -194 195 -196 -197 -198 199 200 -201 -202 -203 -204 -205 206 207 208 209 210 211 213 -214 -215 -216 217 218 -219 -220 221 -222 223 -224 -226 227 228 229 -230 231 -232 -233 234 235 -236 -237 238 -239 -241 -242 243 -244 -245 246 -247 248 249 -250 -251 252 -253 -254 -255 -257 -258 259 -260 261 -262 263 264 265 -266 -267 268 -269 -270 -271 -272 -273 -274 275 -276 277 -278 -279 -280 281 -282 283 284 -285 -286 -287 288 -289 290 291 292 -293 -294 295 296 -297 -298 -299 -300 301 -302 303 305 306 -307 -308 309 -310 311 -312 -313 314 -315 316 -317 -318 -319 -320 -321 322 323 -324 325 326 327 328 -329 330 -331 -332 333 334 -335 336 -337 338 339 340 -341 342 343 -344 345 -346 347 -348 349 -350 0

Verifier Data 

OK

Watcher Data 

runsolver Copyright (C) 2010 Olivier ROUSSEL

This is runsolver version 3.3.0 (svn: 893)

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-3152789-1301710998/watcher-3152789-1301710998 -o /tmp/evaluation-result-3152789-1301710998/solver-3152789-1301710998 -C 2400 -W 1300 -M 7680 ./march_rw HOME/instance-3152789-1301710998.cnf 

running on 2 cores: 5,7

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 2400 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 2430 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 1300 seconds
Enforcing VSIZE limit (soft limit, will send SIGTERM then SIGKILL): 7864320 KiB
Enforcing VSIZE limit (hard limit, stack expansion will fail with SIGSEGV, brk() and mmap() will return ENOMEM): 7915520 KiB
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 3.66 3.93 4.18 4/187 15702
/proc/meminfo: memFree=21304076/32951132 swapFree=67111528/67111528
[pid=15702] ppid=15700 vsize=6720 CPUtime=0 cores=5,7
/proc/15702/stat : 15702 (march_rw) R 15700 15702 12969 0 -1 4202496 274 0 0 0 0 0 0 0 25 0 1 0 282698444 6881280 216 33554432000 4194304 4300876 140733787414560 18446744073709551615 242970211013 0 0 4096 0 0 0 0 17 5 0 0 0
/proc/15702/statm: 1680 216 136 27 0 129 0

[startup+0.0881059 s]
/proc/loadavg: 3.66 3.93 4.18 4/187 15702
/proc/meminfo: memFree=21304076/32951132 swapFree=67111528/67111528
[pid=15702] ppid=15700 vsize=7260 CPUtime=0.08 cores=5,7
/proc/15702/stat : 15702 (march_rw) R 15700 15702 12969 0 -1 4202496 394 0 0 0 8 0 0 0 18 0 1 0 282698444 7434240 336 33554432000 4194304 4300876 140733787414560 18446744073709551615 4217555 0 0 4096 0 0 0 0 17 5 0 0 0
/proc/15702/statm: 1815 336 168 27 0 264 0
Current children cumulated CPU time (s) 0.08
Current children cumulated vsize (KiB) 7260

[startup+0.101103 s]
/proc/loadavg: 3.66 3.93 4.18 4/187 15702
/proc/meminfo: memFree=21304076/32951132 swapFree=67111528/67111528
[pid=15702] ppid=15700 vsize=7260 CPUtime=0.09 cores=5,7
/proc/15702/stat : 15702 (march_rw) R 15700 15702 12969 0 -1 4202496 395 0 0 0 9 0 0 0 18 0 1 0 282698444 7434240 337 33554432000 4194304 4300876 140733787414560 18446744073709551615 4200357 0 0 4096 0 0 0 0 17 5 0 0 0
/proc/15702/statm: 1815 337 168 27 0 264 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 7260

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

Child status: 10
Real time (s): 0.191041
CPU time (s): 0.18997
CPU user time (s): 0.187971
CPU system time (s): 0.001999
CPU usage (%): 99.4394
Max. virtual memory (cumulated for all children) (KiB): 7260

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.187971
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= 404
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= 3
involuntary context switches= 0

runsolver used 0.000999 second user time and 0.004999 second system time

The end

Launcher Data 

Begin job on node128 at 2011-04-02 04:23:18
IDJOB=3152789
IDBENCH=83069
IDSOLVER=1561
FILE ID=node128/3152789-1301710998
RUNJOBID= node128-1301710983-15608
PBS_JOBID= 12840842
Free space on /tmp= 71128 MiB

SOLVER NAME= march_rw 2011-03-02
BENCH NAME= SAT11/random/medium/unif-k3-r4.26-v350-c1491-S87195105-042.SATISFIABLE.cnf
COMMAND LINE= ./march_rw BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3152789-1301710998/watcher-3152789-1301710998 -o /tmp/evaluation-result-3152789-1301710998/solver-3152789-1301710998 -C 2400 -W 1300 -M 7680  ./march_rw HOME/instance-3152789-1301710998.cnf

TIME LIMIT= 2400 seconds
MEMORY LIMIT= 7680 MiB
NBCORE= 2

MD5SUM BENCH= ada5b04e33de45b97800e1e97a28e189
RANDOM SEED=746582685

node128.alineos.net Linux 2.6.18-164.el5 #1 SMP Thu Sep 3 03:28:30 EDT 2009

/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.852
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 0
cpu cores	: 4
apicid		: 0
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5333.70
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.852
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 0
cpu cores	: 4
apicid		: 16
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.75
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 2
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.852
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 1
cpu cores	: 4
apicid		: 2
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.82
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 3
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.852
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 1
cpu cores	: 4
apicid		: 18
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.75
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 4
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.852
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 2
cpu cores	: 4
apicid		: 4
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.82
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 5
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.852
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 2
cpu cores	: 4
apicid		: 20
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.75
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 6
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.852
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 3
cpu cores	: 4
apicid		: 6
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.82
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 7
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.852
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 3
cpu cores	: 4
apicid		: 22
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5434.49
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]


/proc/meminfo:
MemTotal:     32951132 kB
MemFree:      21304100 kB
Buffers:        338440 kB
Cached:       10956220 kB
SwapCached:          0 kB
Active:        7879452 kB
Inactive:      3492200 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32951132 kB
LowFree:      21304100 kB
SwapTotal:    67111528 kB
SwapFree:     67111528 kB
Dirty:            1084 kB
Writeback:          12 kB
AnonPages:       77056 kB
Mapped:          15808 kB
Slab:           213856 kB
PageTables:       5388 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83587092 kB
Committed_AS:   264212 kB
VmallocTotal: 34359738367 kB
VmallocUsed:    296000 kB
VmallocChunk: 34359440975 kB
HugePages_Total:     0
HugePages_Free:      0
HugePages_Rsvd:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 71128 MiB
End job on node128 at 2011-04-02 04:23:18