Trace number 3095965

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 0.631903 0.63394

General information on the benchmark

Namerandom/large/
unif-k3-r4.2-v2500-c10500-S49783605-066-UNKNOWN.cnf
MD5SUM1c3095ea320a010dfc229e2e217434fd
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.631903
Satisfiable
(Un)Satisfiability was proved
Number of variables2500
Number of clauses10500
Sum of the clauses size31500
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 310500
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data

0.59/0.63	c MultiFlip version 1.01 by Jingchao Chen,  Feb. 2011 
0.59/0.63	c input CNF file=HOME/instance-3095965-1301751173.cnf 
0.59/0.63	c var#=2500 clause#=10500 
0.59/0.63	c clause#=10500 var#=2500 ratio=4 
0.59/0.63	c Unsat#=         3 flip#=    288073 
0.59/0.63	c Unsat#=         2 flip#=    288458 
0.59/0.63	c Unsat#=         1 flip#=    293610 
0.59/0.63	c Unsat#=         0 flip#=    385864 
0.59/0.63	c try 1-th flip# 385864
0.59/0.63	c A solution is found
0.59/0.63	c verified 
0.59/0.63	s SATISFIABLE
0.59/0.63	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 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0.59/0.63	v 0
0.59/0.63	c Done (Running cputime is 0.605 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-3095965-1301751173/watcher-3095965-1301751173 -o /tmp/evaluation-result-3095965-1301751173/solver-3095965-1301751173 -C 2400 -W 1300 -M 7680 MultiFlip HOME/instance-3095965-1301751173.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: 4.02 4.02 3.85 3/185 15699
/proc/meminfo: memFree=21670008/32951132 swapFree=67111528/67111528
[pid=15699] ppid=15697 vsize=3420 CPUtime=0 cores=0,2
/proc/15699/stat : 15699 (MultiFlip) R 15697 15699 15364 0 -1 4202496 363 0 0 0 0 0 0 0 21 0 1 0 286716977 3502080 303 33554432000 134512640 134540672 4293816416 18446744073709551615 5453308 0 0 4096 0 0 0 0 17 0 0 0 0
/proc/15699/statm: 855 303 215 7 0 212 0

[startup+0.0256309 s]
/proc/loadavg: 4.02 4.02 3.85 3/185 15699
/proc/meminfo: memFree=21670008/32951132 swapFree=67111528/67111528
[pid=15699] ppid=15697 vsize=3944 CPUtime=0.02 cores=0,2
/proc/15699/stat : 15699 (MultiFlip) R 15697 15699 15364 0 -1 4202496 551 0 0 0 2 0 0 0 21 0 1 0 286716977 4038656 490 33554432000 134512640 134540672 4293816416 18446744073709551615 134524713 0 0 4096 0 0 0 0 17 0 0 0 0
/proc/15699/statm: 986 490 219 7 0 343 0
Current children cumulated CPU time (s) 0.02
Current children cumulated vsize (KiB) 3944

[startup+0.100638 s]
/proc/loadavg: 4.02 4.02 3.85 3/185 15699
/proc/meminfo: memFree=21670008/32951132 swapFree=67111528/67111528
[pid=15699] ppid=15697 vsize=3944 CPUtime=0.09 cores=0,2
/proc/15699/stat : 15699 (MultiFlip) R 15697 15699 15364 0 -1 4202496 551 0 0 0 9 0 0 0 21 0 1 0 286716977 4038656 490 33554432000 134512640 134540672 4293816416 18446744073709551615 134524752 0 0 4096 0 0 0 0 17 0 0 0 0
/proc/15699/statm: 986 490 219 7 0 343 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 3944

[startup+0.300617 s]
/proc/loadavg: 4.02 4.02 3.85 3/185 15699
/proc/meminfo: memFree=21670008/32951132 swapFree=67111528/67111528
[pid=15699] ppid=15697 vsize=3944 CPUtime=0.29 cores=0,2
/proc/15699/stat : 15699 (MultiFlip) R 15697 15699 15364 0 -1 4202496 551 0 0 0 29 0 0 0 22 0 1 0 286716977 4038656 490 33554432000 134512640 134540672 4293816416 18446744073709551615 134524757 0 0 4096 0 0 0 0 17 0 0 0 0
/proc/15699/statm: 986 490 219 7 0 343 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 3944

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

[startup+0.500532 s]
/proc/loadavg: 4.02 4.02 3.85 3/185 15699
/proc/meminfo: memFree=21670008/32951132 swapFree=67111528/67111528
[pid=15699] ppid=15697 vsize=3944 CPUtime=0.49 cores=0,2
/proc/15699/stat : 15699 (MultiFlip) R 15697 15699 15364 0 -1 4202496 597 0 0 0 49 0 0 0 22 0 1 0 286716977 4038656 536 33554432000 134512640 134540672 4293816416 18446744073709551615 134523415 0 0 4096 0 0 0 0 17 0 0 0 0
/proc/15699/statm: 986 536 220 7 0 343 0
Current children cumulated CPU time (s) 0.49
Current children cumulated vsize (KiB) 3944

[startup+0.600538 s]
/proc/loadavg: 4.02 4.02 3.85 3/185 15699
/proc/meminfo: memFree=21670008/32951132 swapFree=67111528/67111528
[pid=15699] ppid=15697 vsize=3944 CPUtime=0.59 cores=0,2
/proc/15699/stat : 15699 (MultiFlip) R 15697 15699 15364 0 -1 4202496 597 0 0 0 59 0 0 0 23 0 1 0 286716977 4038656 536 33554432000 134512640 134540672 4293816416 18446744073709551615 134523457 0 0 4096 0 0 0 0 17 0 0 0 0
/proc/15699/statm: 986 536 220 7 0 343 0
Current children cumulated CPU time (s) 0.59
Current children cumulated vsize (KiB) 3944

Child status: 10
Real time (s): 0.63394
CPU time (s): 0.631903
CPU user time (s): 0.629904
CPU system time (s): 0.001999
CPU usage (%): 99.6787
Max. virtual memory (cumulated for all children) (KiB): 3944

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.629904
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= 644
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= 12
involuntary context switches= 2

runsolver used 0.001999 second user time and 0.004999 second system time

The end

Launcher Data

Begin job on node131 at 2011-04-02 15:32:53
IDJOB=3095965
IDBENCH=82647
IDSOLVER=1523
FILE ID=node131/3095965-1301751173
RUNJOBID= node131-1301748568-15382
PBS_JOBID= 12841006
Free space on /tmp= 71652 MiB

SOLVER NAME= MultiFlip 2011-02-11
BENCH NAME= SAT11/random/large/unif-k3-r4.2-v2500-c10500-S49783605-066-UNKNOWN.cnf
COMMAND LINE= MultiFlip BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3095965-1301751173/watcher-3095965-1301751173 -o /tmp/evaluation-result-3095965-1301751173/solver-3095965-1301751173 -C 2400 -W 1300 -M 7680  MultiFlip HOME/instance-3095965-1301751173.cnf

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

MD5SUM BENCH= 1c3095ea320a010dfc229e2e217434fd
RANDOM SEED=521767305

node131.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	: 5332.83
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	: 5332.75
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		: 2666.830
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	: 5332.77
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	: 5332.74
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]


/proc/meminfo:
MemTotal:     32951132 kB
MemFree:      21670040 kB
Buffers:        351072 kB
Cached:       10573120 kB
SwapCached:          0 kB
Active:        6819632 kB
Inactive:      4199412 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32951132 kB
LowFree:      21670040 kB
SwapTotal:    67111528 kB
SwapFree:     67111528 kB
Dirty:              20 kB
Writeback:           0 kB
AnonPages:       94260 kB
Mapped:          16344 kB
Slab:           199188 kB
PageTables:       5288 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83587092 kB
Committed_AS:   290776 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= 71652 MiB
End job on node131 at 2011-04-02 15:32:54