Trace number 3096095

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 1.65475 1.65593

General information on the benchmark

Namerandom/medium/
unif-k5-r21.3-v150-c3195-S1116496771-020.SATISFIABLE.cnf
MD5SUM55b0e04e9e653549cf2eabcc194b78ff
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.142977
Satisfiable
(Un)Satisfiability was proved
Number of variables150
Number of clauses3195
Sum of the clauses size15975
Maximum clause length5
Minimum clause length5
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 30
Number of clauses of size 40
Number of clauses of size 53195
Number of clauses of size over 50

Solver Data 

1.59/1.65	c MultiFlip version 1.01 by Jingchao Chen,  Feb. 2011 
1.59/1.65	c input CNF file=HOME/instance-3096095-1301752978.cnf 
1.59/1.65	c var#=150 clause#=3195 
1.59/1.65	c clause#=3195 var#=150 ratio=21 
1.59/1.65	c Unsat#=         3 flip#=      2365 
1.59/1.65	c Unsat#=         2 flip#=      3639 
1.59/1.65	c Unsat#=         1 flip#=    180567 
1.59/1.65	c Unsat#=         0 flip#=    746886 
1.59/1.65	c try 1-th flip# 746886
1.59/1.65	c A solution is found
1.59/1.65	c verified 
1.59/1.65	s SATISFIABLE
1.59/1.65	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 
1.59/1.65	v 0
1.59/1.65	c Done (Running cputime is 1.619 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-3096095-1301752978/watcher-3096095-1301752978 -o /tmp/evaluation-result-3096095-1301752978/solver-3096095-1301752978 -C 2400 -W 1300 -M 7680 MultiFlip HOME/instance-3096095-1301752978.cnf 

running on 2 cores: 1,3

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: 4.09 4.04 3.94 5/187 16033
/proc/meminfo: memFree=21700008/32951132 swapFree=67111528/67111528
[pid=16033] ppid=16031 vsize=2984 CPUtime=0 cores=1,3
/proc/16033/stat : 16033 (MultiFlip) R 16031 16033 15364 0 -1 4202496 342 0 0 0 0 0 0 0 25 0 1 0 286897471 3055616 281 33554432000 134512640 134540672 4289330864 18446744073709551615 5453308 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/16033/statm: 746 281 215 7 0 103 0

[startup+0.0644001 s]
/proc/loadavg: 4.09 4.04 3.94 5/187 16033
/proc/meminfo: memFree=21700008/32951132 swapFree=67111528/67111528
[pid=16033] ppid=16031 vsize=3112 CPUtime=0.06 cores=1,3
/proc/16033/stat : 16033 (MultiFlip) R 16031 16033 15364 0 -1 4202496 387 0 0 0 6 0 0 0 25 0 1 0 286897471 3186688 325 33554432000 134512640 134540672 4289330864 18446744073709551615 134524741 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/16033/statm: 778 325 219 7 0 135 0
Current children cumulated CPU time (s) 0.06
Current children cumulated vsize (KiB) 3112

[startup+0.100407 s]
/proc/loadavg: 4.09 4.04 3.94 5/187 16033
/proc/meminfo: memFree=21700008/32951132 swapFree=67111528/67111528
[pid=16033] ppid=16031 vsize=3112 CPUtime=0.09 cores=1,3
/proc/16033/stat : 16033 (MultiFlip) R 16031 16033 15364 0 -1 4202496 397 0 0 0 9 0 0 0 25 0 1 0 286897471 3186688 335 33554432000 134512640 134540672 4289330864 18446744073709551615 134526660 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/16033/statm: 778 335 220 7 0 135 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 3112

[startup+0.300362 s]
/proc/loadavg: 4.09 4.04 3.94 5/187 16033
/proc/meminfo: memFree=21700008/32951132 swapFree=67111528/67111528
[pid=16033] ppid=16031 vsize=3112 CPUtime=0.29 cores=1,3
/proc/16033/stat : 16033 (MultiFlip) R 16031 16033 15364 0 -1 4202496 397 0 0 0 29 0 0 0 25 0 1 0 286897471 3186688 335 33554432000 134512640 134540672 4289330864 18446744073709551615 134524165 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/16033/statm: 778 335 220 7 0 135 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 3112

[startup+0.700302 s]
/proc/loadavg: 4.09 4.04 3.94 5/187 16033
/proc/meminfo: memFree=21700008/32951132 swapFree=67111528/67111528
[pid=16033] ppid=16031 vsize=3112 CPUtime=0.69 cores=1,3
/proc/16033/stat : 16033 (MultiFlip) R 16031 16033 15364 0 -1 4202496 397 0 0 0 69 0 0 0 25 0 1 0 286897471 3186688 335 33554432000 134512640 134540672 4289330864 18446744073709551615 134522930 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/16033/statm: 778 335 220 7 0 135 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 3112

[startup+1.50015 s]
/proc/loadavg: 4.09 4.04 3.94 5/188 16034
/proc/meminfo: memFree=21699652/32951132 swapFree=67111528/67111528
[pid=16033] ppid=16031 vsize=3112 CPUtime=1.49 cores=1,3
/proc/16033/stat : 16033 (MultiFlip) R 16031 16033 15364 0 -1 4202496 397 0 0 0 149 0 0 0 25 0 1 0 286897471 3186688 335 33554432000 134512640 134540672 4289330864 18446744073709551615 134523392 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/16033/statm: 778 335 220 7 0 135 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 3112

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

[startup+1.60013 s]
/proc/loadavg: 4.09 4.04 3.94 5/188 16034
/proc/meminfo: memFree=21699652/32951132 swapFree=67111528/67111528
[pid=16033] ppid=16031 vsize=3112 CPUtime=1.59 cores=1,3
/proc/16033/stat : 16033 (MultiFlip) R 16031 16033 15364 0 -1 4202496 397 0 0 0 159 0 0 0 25 0 1 0 286897471 3186688 335 33554432000 134512640 134540672 4289330864 18446744073709551615 134523769 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/16033/statm: 778 335 220 7 0 135 0
Current children cumulated CPU time (s) 1.59
Current children cumulated vsize (KiB) 3112

Child status: 10
Real time (s): 1.65593
CPU time (s): 1.65475
CPU user time (s): 1.65375
CPU system time (s): 0.000999
CPU usage (%): 99.9284
Max. virtual memory (cumulated for all children) (KiB): 3112

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 1.65375
system time used= 0.000999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 429
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= 3

runsolver used 0.001999 second user time and 0.008998 second system time

The end

Launcher Data 

Begin job on node131 at 2011-04-02 16:02:58
IDJOB=3096095
IDBENCH=82777
IDSOLVER=1523
FILE ID=node131/3096095-1301752978
RUNJOBID= node131-1301748568-15384
PBS_JOBID= 12841006
Free space on /tmp= 71660 MiB

SOLVER NAME= MultiFlip 2011-02-11
BENCH NAME= SAT11/random/medium/unif-k5-r21.3-v150-c3195-S1116496771-020.SATISFIABLE.cnf
COMMAND LINE= MultiFlip BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3096095-1301752978/watcher-3096095-1301752978 -o /tmp/evaluation-result-3096095-1301752978/solver-3096095-1301752978 -C 2400 -W 1300 -M 7680  MultiFlip HOME/instance-3096095-1301752978.cnf

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

MD5SUM BENCH= 55b0e04e9e653549cf2eabcc194b78ff
RANDOM SEED=982197549

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:      21700040 kB
Buffers:        351632 kB
Cached:       10568220 kB
SwapCached:          0 kB
Active:        6788852 kB
Inactive:      4199992 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32951132 kB
LowFree:      21700040 kB
SwapTotal:    67111528 kB
SwapFree:     67111528 kB
Dirty:               8 kB
Writeback:           0 kB
AnonPages:       69028 kB
Mapped:          16372 kB
Slab:           199172 kB
PageTables:       5248 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83587092 kB
Committed_AS:   252800 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= 71660 MiB
End job on node131 at 2011-04-02 16:03:00