Trace number 3095844

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 8.83966 8.92006

General information on the benchmark

Namerandom/large/
unif-k3-r4.2-v2500-c10500-S924370159-018-UNKNOWN.cnf
MD5SUM392862e8cb399d235b8f33dd872803fb
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.755884
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

8.81/8.91	c MultiFlip version 1.01 by Jingchao Chen,  Feb. 2011 
8.81/8.91	c input CNF file=HOME/instance-3095844-1301748575.cnf 
8.81/8.91	c var#=2500 clause#=10500 
8.81/8.91	c clause#=10500 var#=2500 ratio=4 
8.81/8.91	c Unsat#=         3 flip#=    813573 
8.81/8.91	c Unsat#=         2 flip#=    822021 
8.81/8.91	c Unsat#=         1 flip#=    835123 
8.81/8.91	c Unsat#=         0 flip#=  12671229 
8.81/8.91	c try 1-th flip# 12671229
8.81/8.91	c A solution is found
8.81/8.91	c verified 
8.81/8.91	s SATISFIABLE
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8.81/8.91	v 0
8.81/8.91	c Done (Running cputime is 8.812 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-3095844-1301748575/watcher-3095844-1301748575 -o /tmp/evaluation-result-3095844-1301748575/solver-3095844-1301748575 -C 2400 -W 1300 -M 7680 MultiFlip HOME/instance-3095844-1301748575.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: 0.00 0.00 0.22 2/174 11825
/proc/meminfo: memFree=22306072/32950928 swapFree=67111528/67111528
[pid=11825] ppid=11823 vsize=1456 CPUtime=0 cores=5,7
/proc/11825/stat : 11825 (MultiFlip) D 11823 11825 11795 0 -1 4194304 90 0 0 0 0 0 0 0 22 0 1 0 286456378 1490944 43 33554432000 134512640 134540672 4292931264 18446744073709551615 6134951 0 0 4096 0 18446744071562234166 0 0 17 5 0 0 0
/proc/11825/statm: 364 43 33 7 0 30 0

[startup+0.0754251 s]
/proc/loadavg: 0.00 0.00 0.22 2/174 11825
/proc/meminfo: memFree=22306072/32950928 swapFree=67111528/67111528
[pid=11825] ppid=11823 vsize=1456 CPUtime=0 cores=5,7
/proc/11825/stat : 11825 (MultiFlip) D 11823 11825 11795 0 -1 4194304 90 0 0 0 0 0 0 0 22 0 1 0 286456378 1490944 43 33554432000 134512640 134540672 4292931264 18446744073709551615 6134951 0 0 4096 0 18446744071562234166 0 0 17 5 0 0 0
/proc/11825/statm: 364 43 33 7 0 30 0
Current children cumulated CPU time (s) 0
Current children cumulated vsize (KiB) 1456

[startup+0.100419 s]
/proc/loadavg: 0.00 0.00 0.22 2/174 11825
/proc/meminfo: memFree=22306072/32950928 swapFree=67111528/67111528
[pid=11825] ppid=11823 vsize=3812 CPUtime=0.01 cores=5,7
/proc/11825/stat : 11825 (MultiFlip) R 11823 11825 11795 0 -1 4202496 502 0 1 0 1 0 0 0 22 0 1 0 286456378 3903488 442 33554432000 134512640 134540672 4292931264 18446744073709551615 6604284 0 0 4096 0 0 0 0 17 5 0 0 8
/proc/11825/statm: 953 442 219 7 0 310 0
Current children cumulated CPU time (s) 0.01
Current children cumulated vsize (KiB) 3812

[startup+0.300383 s]
/proc/loadavg: 0.00 0.00 0.22 2/174 11825
/proc/meminfo: memFree=22306072/32950928 swapFree=67111528/67111528
[pid=11825] ppid=11823 vsize=3944 CPUtime=0.21 cores=5,7
/proc/11825/stat : 11825 (MultiFlip) R 11823 11825 11795 0 -1 4202496 551 0 1 0 21 0 0 0 22 0 1 0 286456378 4038656 491 33554432000 134512640 134540672 4292931264 18446744073709551615 134524717 0 0 4096 0 0 0 0 17 5 0 0 8
/proc/11825/statm: 986 491 219 7 0 343 0
Current children cumulated CPU time (s) 0.21
Current children cumulated vsize (KiB) 3944

[startup+0.700312 s]
/proc/loadavg: 0.00 0.00 0.22 2/174 11825
/proc/meminfo: memFree=22306072/32950928 swapFree=67111528/67111528
[pid=11825] ppid=11823 vsize=3944 CPUtime=0.61 cores=5,7
/proc/11825/stat : 11825 (MultiFlip) R 11823 11825 11795 0 -1 4202496 597 0 1 0 61 0 0 0 24 0 1 0 286456378 4038656 537 33554432000 134512640 134540672 4292931264 18446744073709551615 134524094 0 0 4096 0 0 0 0 17 5 0 0 8
/proc/11825/statm: 986 537 220 7 0 343 0
Current children cumulated CPU time (s) 0.61
Current children cumulated vsize (KiB) 3944

[startup+1.50017 s]
/proc/loadavg: 0.00 0.00 0.22 3/180 11836
/proc/meminfo: memFree=22301016/32950928 swapFree=67111528/67111528
[pid=11825] ppid=11823 vsize=3944 CPUtime=1.41 cores=5,7
/proc/11825/stat : 11825 (MultiFlip) R 11823 11825 11795 0 -1 4202496 597 0 1 0 141 0 0 0 25 0 1 0 286456378 4038656 537 33554432000 134512640 134540672 4292931264 18446744073709551615 134523350 0 0 4096 0 0 0 0 17 5 0 0 8
/proc/11825/statm: 986 537 220 7 0 343 0
Current children cumulated CPU time (s) 1.41
Current children cumulated vsize (KiB) 3944

[startup+3.10089 s]
/proc/loadavg: 0.00 0.00 0.22 4/185 11846
/proc/meminfo: memFree=22290412/32950928 swapFree=67111528/67111528
[pid=11825] ppid=11823 vsize=3944 CPUtime=3.01 cores=5,7
/proc/11825/stat : 11825 (MultiFlip) R 11823 11825 11795 0 -1 4202496 597 0 1 0 301 0 0 0 25 0 1 0 286456378 4038656 537 33554432000 134512640 134540672 4292931264 18446744073709551615 134526613 0 0 4096 0 0 0 0 17 5 0 0 8
/proc/11825/statm: 986 537 220 7 0 343 0
Current children cumulated CPU time (s) 3.01
Current children cumulated vsize (KiB) 3944

[startup+6.30031 s]
/proc/loadavg: 0.32 0.07 0.24 5/190 11856
/proc/meminfo: memFree=22281580/32950928 swapFree=67111528/67111528
[pid=11825] ppid=11823 vsize=3944 CPUtime=6.21 cores=5,7
/proc/11825/stat : 11825 (MultiFlip) R 11823 11825 11795 0 -1 4202496 597 0 1 0 621 0 0 0 25 0 1 0 286456378 4038656 537 33554432000 134512640 134540672 4292931264 18446744073709551615 134523217 0 0 4096 0 0 0 0 17 5 0 0 8
/proc/11825/statm: 986 537 220 7 0 343 0
Current children cumulated CPU time (s) 6.21
Current children cumulated vsize (KiB) 3944

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

[startup+7.90103 s]
/proc/loadavg: 0.32 0.07 0.24 5/190 11857
/proc/meminfo: memFree=22280960/32950928 swapFree=67111528/67111528
[pid=11825] ppid=11823 vsize=3944 CPUtime=7.81 cores=5,7
/proc/11825/stat : 11825 (MultiFlip) R 11823 11825 11795 0 -1 4202496 597 0 1 0 781 0 0 0 25 0 1 0 286456378 4038656 537 33554432000 134512640 134540672 4292931264 18446744073709551615 134523579 0 0 4096 0 0 0 0 17 5 0 0 8
/proc/11825/statm: 986 537 220 7 0 343 0
Current children cumulated CPU time (s) 7.81
Current children cumulated vsize (KiB) 3944

[startup+8.70088 s]
/proc/loadavg: 0.32 0.07 0.24 5/190 11857
/proc/meminfo: memFree=22280960/32950928 swapFree=67111528/67111528
[pid=11825] ppid=11823 vsize=3944 CPUtime=8.62 cores=5,7
/proc/11825/stat : 11825 (MultiFlip) R 11823 11825 11795 0 -1 4202496 597 0 1 0 862 0 0 0 25 0 1 0 286456378 4038656 537 33554432000 134512640 134540672 4292931264 18446744073709551615 134524165 0 0 4096 0 0 0 0 17 5 0 0 8
/proc/11825/statm: 986 537 220 7 0 343 0
Current children cumulated CPU time (s) 8.62
Current children cumulated vsize (KiB) 3944

[startup+8.90085 s]
/proc/loadavg: 0.32 0.07 0.24 5/190 11857
/proc/meminfo: memFree=22280960/32950928 swapFree=67111528/67111528
[pid=11825] ppid=11823 vsize=3944 CPUtime=8.81 cores=5,7
/proc/11825/stat : 11825 (MultiFlip) R 11823 11825 11795 0 -1 4202496 597 0 1 0 881 0 0 0 25 0 1 0 286456378 4038656 537 33554432000 134512640 134540672 4292931264 18446744073709551615 134523352 0 0 4096 0 0 0 0 17 5 0 0 8
/proc/11825/statm: 986 537 220 7 0 343 0
Current children cumulated CPU time (s) 8.81
Current children cumulated vsize (KiB) 3944

Child status: 10
Real time (s): 8.92006
CPU time (s): 8.83966
CPU user time (s): 8.83566
CPU system time (s): 0.003999
CPU usage (%): 99.0986
Max. virtual memory (cumulated for all children) (KiB): 3944

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 8.83566
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= 647
page faults= 1
swaps= 0
block input operations= 0
block output operations= 0
messages sent= 0
messages received= 0
signals received= 0
voluntary context switches= 15
involuntary context switches= 12

runsolver used 0.008998 second user time and 0.037994 second system time

The end

Launcher Data

Begin job on node122 at 2011-04-02 14:49:36
IDJOB=3095844
IDBENCH=82526
IDSOLVER=1523
FILE ID=node122/3095844-1301748575
RUNJOBID= node122-1301748570-11816
PBS_JOBID= 12841015
Free space on /tmp= 71956 MiB

SOLVER NAME= MultiFlip 2011-02-11
BENCH NAME= SAT11/random/large/unif-k3-r4.2-v2500-c10500-S924370159-018-UNKNOWN.cnf
COMMAND LINE= MultiFlip BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3095844-1301748575/watcher-3095844-1301748575 -o /tmp/evaluation-result-3095844-1301748575/solver-3095844-1301748575 -C 2400 -W 1300 -M 7680  MultiFlip HOME/instance-3095844-1301748575.cnf

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

MD5SUM BENCH= 392862e8cb399d235b8f33dd872803fb
RANDOM SEED=978785109

node122.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		: 2666.820
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	: 5333.64
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		: 2666.820
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		: 2666.820
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		: 2666.820
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	: 5332.83
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		: 2666.820
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		: 2666.820
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		: 2666.820
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		: 2666.820
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	: 5332.97
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]


/proc/meminfo:
MemTotal:     32950928 kB
MemFree:      22306236 kB
Buffers:        343144 kB
Cached:        9984988 kB
SwapCached:          0 kB
Active:        6764240 kB
Inactive:      3626512 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32950928 kB
LowFree:      22306236 kB
SwapTotal:    67111528 kB
SwapFree:     67111528 kB
Dirty:             252 kB
Writeback:           0 kB
AnonPages:       62444 kB
Mapped:          14736 kB
Slab:           191672 kB
PageTables:       4792 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83586992 kB
Committed_AS:   187688 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= 71952 MiB
End job on node122 at 2011-04-02 14:49:45