Trace number 3096249

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
MultiFlip 2011-02-11SAT 0.245962 0.251264

General information on the benchmark

Namerandom/medium/
unif-k3-r4.26-v350-c1491-S1507171828-044.SATISFIABLE.cnf
MD5SUM3fdc728117bf5d54c14944ad1e6b0800
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.035994
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 

0.19/0.25	c MultiFlip version 1.01 by Jingchao Chen,  Feb. 2011 
0.19/0.25	c input CNF file=HOME/instance-3096249-1301757128.cnf 
0.19/0.25	c var#=350 clause#=1491 
0.19/0.25	c clause#=1491 var#=350 ratio=4 
0.19/0.25	c Unsat#=         3 flip#=      2546 
0.19/0.25	c Unsat#=         2 flip#=      2583 
0.19/0.25	c Unsat#=         1 flip#=     15867 
0.19/0.25	c Unsat#=         0 flip#=    428099 
0.19/0.25	c try 1-th flip# 428099
0.19/0.25	c A solution is found
0.19/0.25	c verified 
0.19/0.25	s SATISFIABLE
0.19/0.25	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 -280 281 -282 -283 -284 285 -286 -287 -288 289 -290 291 -292 293 294 -295 296 297 -298 299 -300 301 -302 -303 304 305 306 -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 
0.19/0.25	v 0
0.19/0.25	c Done (Running cputime is 0.242 seconds)

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-3096249-1301757128/watcher-3096249-1301757128 -o /tmp/evaluation-result-3096249-1301757128/solver-3096249-1301757128 -C 2400 -W 1300 -M 7680 MultiFlip HOME/instance-3096249-1301757128.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: 3.71 3.92 3.68 4/189 27722
/proc/meminfo: memFree=22670204/32951124 swapFree=67111528/67111528
[pid=27722] ppid=27720 vsize=2764 CPUtime=0 cores=5,7
/proc/27722/stat : 27722 (MultiFlip) R 27720 27722 27553 0 -1 4194304 194 0 0 0 0 0 0 0 25 0 1 0 287313575 2830336 144 33554432000 134512640 134540672 4290809024 18446744073709551615 11276112 0 0 4096 0 0 0 0 17 5 0 0 0
/proc/27722/statm: 691 144 125 7 0 35 0

[startup+0.105346 s]
/proc/loadavg: 3.71 3.92 3.68 4/189 27722
/proc/meminfo: memFree=22670204/32951124 swapFree=67111528/67111528
[pid=27722] ppid=27720 vsize=2980 CPUtime=0.1 cores=5,7
/proc/27722/stat : 27722 (MultiFlip) R 27720 27722 27553 0 -1 4202496 350 0 0 0 10 0 0 0 25 0 1 0 287313575 3051520 288 33554432000 134512640 134540672 4290809024 18446744073709551615 134527364 0 0 4096 0 0 0 0 17 5 0 0 0
/proc/27722/statm: 745 288 220 7 0 102 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 2980

[startup+0.200331 s]
/proc/loadavg: 3.71 3.92 3.68 4/189 27722
/proc/meminfo: memFree=22670204/32951124 swapFree=67111528/67111528
[pid=27722] ppid=27720 vsize=2980 CPUtime=0.19 cores=5,7
/proc/27722/stat : 27722 (MultiFlip) R 27720 27722 27553 0 -1 4202496 350 0 0 0 19 0 0 0 25 0 1 0 287313575 3051520 288 33554432000 134512640 134540672 4290809024 18446744073709551615 134526490 0 0 4096 0 0 0 0 17 5 0 0 0
/proc/27722/statm: 745 288 220 7 0 102 0
Current children cumulated CPU time (s) 0.19
Current children cumulated vsize (KiB) 2980

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

Child status: 10
Real time (s): 0.251264
CPU time (s): 0.245962
CPU user time (s): 0.245962
CPU system time (s): 0
CPU usage (%): 97.8899
Max. virtual memory (cumulated for all children) (KiB): 2980

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.245962
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= 368
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= 6
involuntary context switches= 1

runsolver used 0.001999 second user time and 0.003999 second system time

The end

Launcher Data 

Begin job on node109 at 2011-04-02 17:12:08
IDJOB=3096249
IDBENCH=82931
IDSOLVER=1523
FILE ID=node109/3096249-1301757128
RUNJOBID= node109-1301757124-27574
PBS_JOBID= 12841080
Free space on /tmp= 72060 MiB

SOLVER NAME= MultiFlip 2011-02-11
BENCH NAME= SAT11/random/medium/unif-k3-r4.26-v350-c1491-S1507171828-044.SATISFIABLE.cnf
COMMAND LINE= MultiFlip BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3096249-1301757128/watcher-3096249-1301757128 -o /tmp/evaluation-result-3096249-1301757128/solver-3096249-1301757128 -C 2400 -W 1300 -M 7680  MultiFlip HOME/instance-3096249-1301757128.cnf

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

MD5SUM BENCH= 3fdc728117bf5d54c14944ad1e6b0800
RANDOM SEED=1428762238

node109.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		: 2666.809
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	: 5333.61
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		: 2666.809
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		: 2666.809
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	: 5332.74
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		: 2666.809
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		: 2666.809
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		: 2666.809
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		: 2666.809
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		: 2666.809
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	: 5332.74
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]


/proc/meminfo:
MemTotal:     32951124 kB
MemFree:      22670484 kB
Buffers:        344472 kB
Cached:        9604492 kB
SwapCached:          0 kB
Active:        5976556 kB
Inactive:      4037956 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32951124 kB
LowFree:      22670484 kB
SwapTotal:    67111528 kB
SwapFree:     67111528 kB
Dirty:             932 kB
Writeback:           0 kB
AnonPages:       65440 kB
Mapped:          16184 kB
Slab:           202240 kB
PageTables:       5244 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83587088 kB
Committed_AS:   252144 kB
VmallocTotal: 34359738367 kB
VmallocUsed:    296008 kB
VmallocChunk: 34359440975 kB
HugePages_Total:     0
HugePages_Free:      0
HugePages_Rsvd:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 72060 MiB
End job on node109 at 2011-04-02 17:12:09