Trace number 3096230

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 0.037994 0.0401009

General information on the benchmark

Namerandom/medium/
unif-k3-r4.26-v350-c1491-S1077220429-098.SATISFIABLE.cnf
MD5SUM47cf94d2c6b17be07f455562df293cd1
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.003999
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 

0.00/0.04	c MultiFlip version 1.01 by Jingchao Chen,  Feb. 2011 
0.00/0.04	c input CNF file=HOME/instance-3096230-1301756926.cnf 
0.00/0.04	c var#=350 clause#=1491 
0.00/0.04	c clause#=1491 var#=350 ratio=4 
0.00/0.04	c Unsat#=         3 flip#=       307 
0.00/0.04	c Unsat#=         2 flip#=       322 
0.00/0.04	c Unsat#=         1 flip#=       334 
0.00/0.04	c Unsat#=         0 flip#=      4715 
0.00/0.04	c try 1-th flip# 4715
0.00/0.04	c A solution is found
0.00/0.04	c verified 
0.00/0.04	s SATISFIABLE
0.00/0.04	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 
0.00/0.04	v 0
0.00/0.04	c Done (Running cputime is 0.032 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-3096230-1301756926/watcher-3096230-1301756926 -o /tmp/evaluation-result-3096230-1301756926/solver-3096230-1301756926 -C 2400 -W 1300 -M 7680 MultiFlip HOME/instance-3096230-1301756926.cnf 

running on 2 cores: 0,2

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: 3.78 3.92 3.70 5/189 19270
/proc/meminfo: memFree=21853932/32951124 swapFree=67111528/67111528
[pid=19270] ppid=19268 vsize=2980 CPUtime=0 cores=0,2
/proc/19270/stat : 19270 (MultiFlip) R 19268 19270 19156 0 -1 4202496 340 0 0 0 0 0 0 0 25 0 1 0 268108830 3051520 278 33554432000 134512640 134540672 4291665072 18446744073709551615 11032060 0 0 4096 0 0 0 0 17 0 0 0 0
/proc/19270/statm: 745 279 219 7 0 102 0

[startup+0.00782693 s]
/proc/loadavg: 3.78 3.92 3.70 5/189 19270
/proc/meminfo: memFree=21853932/32951124 swapFree=67111528/67111528
[pid=19270] ppid=19268 vsize=2980 CPUtime=0 cores=0,2
/proc/19270/stat : 19270 (MultiFlip) R 19268 19270 19156 0 -1 4202496 346 0 0 0 0 0 0 0 25 0 1 0 268108830 3051520 284 33554432000 134512640 134540672 4291665072 18446744073709551615 134524800 0 0 4096 0 0 0 0 17 0 0 0 0
/proc/19270/statm: 745 284 219 7 0 102 0
Current children cumulated CPU time (s) 0
Current children cumulated vsize (KiB) 2980

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

[startup+0.00782693 s]
/proc/loadavg: 3.78 3.92 3.70 5/189 19270
/proc/meminfo: memFree=21853932/32951124 swapFree=67111528/67111528
[pid=19270] ppid=19268 vsize=2980 CPUtime=0 cores=0,2
/proc/19270/stat : 19270 (MultiFlip) R 19268 19270 19156 0 -1 4202496 346 0 0 0 0 0 0 0 25 0 1 0 268108830 3051520 284 33554432000 134512640 134540672 4291665072 18446744073709551615 134524800 0 0 4096 0 0 0 0 17 0 0 0 0
/proc/19270/statm: 745 284 219 7 0 102 0
Current children cumulated CPU time (s) 0
Current children cumulated vsize (KiB) 2980

Child status: 10
Real time (s): 0.0401009
CPU time (s): 0.037994
CPU user time (s): 0.037994
CPU system time (s): 0
CPU usage (%): 94.746
Max. virtual memory (cumulated for all children) (KiB): 2980

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.037994
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= 369
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 0.000999 second user time and 0.005999 second system time

The end

Launcher Data 

Begin job on node146 at 2011-04-02 17:08:46
IDJOB=3096230
IDBENCH=82912
IDSOLVER=1523
FILE ID=node146/3096230-1301756926
RUNJOBID= node146-1301756921-19174
PBS_JOBID= 12841068
Free space on /tmp= 72164 MiB

SOLVER NAME= MultiFlip 2011-02-11
BENCH NAME= SAT11/random/medium/unif-k3-r4.26-v350-c1491-S1077220429-098.SATISFIABLE.cnf
COMMAND LINE= MultiFlip BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3096230-1301756926/watcher-3096230-1301756926 -o /tmp/evaluation-result-3096230-1301756926/solver-3096230-1301756926 -C 2400 -W 1300 -M 7680  MultiFlip HOME/instance-3096230-1301756926.cnf

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

MD5SUM BENCH= 47cf94d2c6b17be07f455562df293cd1
RANDOM SEED=1744521919

node146.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		: 2666.830
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	: 5333.66
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		: 2666.830
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		: 2666.830
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	: 5332.75
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		: 2666.830
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	: 5332.86
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		: 2666.830
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	: 5332.75
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		: 2666.830
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		: 2666.830
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	: 5332.75
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		: 2666.830
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	: 5332.75
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]


/proc/meminfo:
MemTotal:     32951124 kB
MemFree:      21853948 kB
Buffers:        347848 kB
Cached:       10430432 kB
SwapCached:          0 kB
Active:        7097784 kB
Inactive:      3746828 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32951124 kB
LowFree:      21853948 kB
SwapTotal:    67111528 kB
SwapFree:     67111528 kB
Dirty:             964 kB
Writeback:           0 kB
AnonPages:       66536 kB
Mapped:          16176 kB
Slab:           189644 kB
PageTables:       5276 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83587088 kB
Committed_AS:   250392 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= 72164 MiB
End job on node146 at 2011-04-02 17:08:46