Trace number 3420521

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
march_rw 2011-03-02UNSAT 0.255961 0.256129

General information on the benchmark

Namerandom/medium/
unif-k3-r4.26-v250-c1065-S860541986-078.UNKNOWN.cnf
MD5SUM71604c5ae90cca76a60cbb9c7e772fe9
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.255961
Satisfiable
(Un)Satisfiability was proved
Number of variables250
Number of clauses1065
Sum of the clauses size3195
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 31065
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

0.00/0.00	c main():: ***                                   [ march satisfiability solver ]                                   ***
0.00/0.00	c main()::  **                Copyright (C) 2001-2009 M.J.H. Heule, J.E. van Zwieten, and M. Dufour                 **
0.00/0.00	c main()::   *  This program may be redistributed and/or modified under the terms of the GNU Gereral Public License  *
0.00/0.00	c main()::
0.00/0.00	c initFormula():: searching for DIMACS p-line....
0.00/0.00	c initFormula():: the DIMACS p-line indicates a CNF of 250 variables and 1065 clauses.
0.00/0.00	c parseCNF():: parsing....
0.00/0.00	c parseCNF():: the CNF contains 0 unary clauses.
0.00/0.00	c runParser():: parsing was successful, warming up engines...
0.00/0.00	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
0.00/0.00	c preprocessing fase I completed:: there are now 250 free variables and 1065 clauses.
0.00/0.00	c using 3-SAT heuristics (occurence based diff)
0.00/0.00	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
0.00/0.00	c simplify_formula():: removed 0 tautological, 0 satisfied and 157 duplicate clauses
0.00/0.00	c resolvent_look() :: found 97 resolvents
0.00/0.00	c main():: clause / variable ratio: ( 1162 / 250 ) = 4.65
0.00/0.00	c longest clause has size 3
0.00/0.00	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
0.00/0.00	c number of free variables = 250
0.00/0.00	c dynamic_preselect_setsize :: off
0.00/0.00	c main():: all systems go!
0.00/0.00	c |----------------------------------------------------------------|
c |*
c |**
c |***
c |****
c |********
c |****************
c |********************************
c |****************************************************************| (0/4) NodeCount: 131
0.01/0.03	c |----------------------------------------------------------------|
c |*
c |**
c |***
c |****
c |********
c |****************
c |********************************
c |*********************************
c |**********************************
c |***********************************
c |************************************
c |****************************************
c |************************************************
c |*************************************************
c |**************************************************
c |***************************************************
c |****************************************************
c |********************************************************
c |*********************************************************
c |**********************************************************
c |***********************************************************
c |************************************************************
c |****************************************************************| (1/4) NodeCount: 429
0.10/0.11	c |----------------------------------------------------------------|
c |*
c |**
c |***
c |****
c |********
c |****************
c |*****************
c |******************
c |*******************
c |********************
c |************************
c |*************************
c |**************************
c |***************************
c |****************************
c |********************************
c |*********************************
c |**********************************
c |***********************************
c |************************************
c |****************************************
c |*****************************************
c |******************************************
c |*******************************************
c |********************************************
c |************************************************
c |*************************************************
c |**************************************************
c |***************************************************
c |****************************************************
c |********************************************************
c |****************************************************************| (2/4) NodeCount: 745
0.20/0.20	c |----------------------------------------------------------------|
c |*
c |**
c |***
c |****
c |********
c |*********
c |**********
c |***********
c |************
c |****************
c |*****************
c |******************
c |*******************
c |********************
c |************************
c |********************************
c |*********************************
c |**********************************
c |***********************************
c |************************************
c |****************************************
c |************************************************
c |****************************************************************| (3/4) NodeCount: 852
0.20/0.24	c |----------------------------------------------------------------|
c |*
c |**
c |***
c |****
c |********
c |****************
c |********************************
c |****************************************************************| (4/4) NodeCount: 865
0.20/0.25	c |----------------------------------------------------------------|
c |
0.20/0.25	c
0.20/0.25	c main():: nodeCount: 865
0.20/0.25	c main():: dead ends in main: 0
0.20/0.25	c main():: lookAheadCount: 137418
0.20/0.25	c main():: unitResolveCount: 4047
0.20/0.25	c main():: time=0.250000
0.20/0.25	c main():: necessary_assignments: 92
0.20/0.25	c main():: bin_sat: 0, bin_unsat 0
0.20/0.25	c main():: doublelook: #: 5115, succes #: 4091
0.20/0.25	c main():: doublelook: overall 3.787 of all possible doublelooks executed
0.20/0.25	c main():: doublelook: succesrate: 79.980, average DL_trigger: 40.692
0.20/0.25	s UNSATISFIABLE

Verifier Data 

No possible verification on an UNSAT instance

Watcher Data 

runsolver Copyright (C) 2010-2011 Olivier ROUSSEL

This is runsolver version 3.3.0 (svn: 961)

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-3420521-1306629788/watcher-3420521-1306629788 -o /tmp/evaluation-result-3420521-1306629788/solver-3420521-1306629788 -C 5000 -W 5100 -M 15500 ./march_rw HOME/instance-3420521-1306629788.cnf 

running on 4 cores: 1,3,5,7

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 5000 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 5030 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 5100 seconds
Enforcing VSIZE limit (soft limit, will send SIGTERM then SIGKILL): 15872000 KiB
Enforcing VSIZE limit (hard limit, stack expansion will fail with SIGSEGV, brk() and mmap() will return ENOMEM): 15923200 KiB
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 1.00 1.03 1.30 2/273 1875
/proc/meminfo: memFree=28664372/32951124 swapFree=55664332/67111528
[pid=1875] ppid=1873 vsize=6588 CPUtime=0 cores=1,3,5,7
/proc/1875/stat : 1875 (march_rw) R 1873 1875 1193 0 -1 4202496 257 0 0 0 0 0 0 0 23 0 1 0 774579536 6746112 200 33554432000 4194304 4300876 140736492022608 18446744073709551615 222921437893 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/1875/statm: 1647 200 136 27 0 96 0

[startup+0.0119421 s]
/proc/loadavg: 1.00 1.03 1.30 2/273 1875
/proc/meminfo: memFree=28664372/32951124 swapFree=55664332/67111528
[pid=1875] ppid=1873 vsize=6936 CPUtime=0.01 cores=1,3,5,7
/proc/1875/stat : 1875 (march_rw) R 1873 1875 1193 0 -1 4202496 331 0 0 0 1 0 0 0 23 0 1 0 774579536 7102464 274 33554432000 4194304 4300876 140736492022608 18446744073709551615 4200364 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/1875/statm: 1734 274 168 27 0 183 0
Current children cumulated CPU time (s) 0.01
Current children cumulated vsize (KiB) 6936

[startup+0.100972 s]
/proc/loadavg: 1.00 1.03 1.30 2/273 1875
/proc/meminfo: memFree=28664372/32951124 swapFree=55664332/67111528
[pid=1875] ppid=1873 vsize=6936 CPUtime=0.1 cores=1,3,5,7
/proc/1875/stat : 1875 (march_rw) R 1873 1875 1193 0 -1 4202496 338 0 0 0 10 0 0 0 23 0 1 0 774579536 7102464 281 33554432000 4194304 4300876 140736492022608 18446744073709551615 4214407 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/1875/statm: 1734 281 168 27 0 183 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 6936

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

[startup+0.200953 s]
/proc/loadavg: 1.00 1.03 1.30 2/273 1875
/proc/meminfo: memFree=28664372/32951124 swapFree=55664332/67111528
[pid=1875] ppid=1873 vsize=6936 CPUtime=0.2 cores=1,3,5,7
/proc/1875/stat : 1875 (march_rw) R 1873 1875 1193 0 -1 4202496 341 0 0 0 20 0 0 0 18 0 1 0 774579536 7102464 284 33554432000 4194304 4300876 140736492022608 18446744073709551615 4214333 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/1875/statm: 1734 284 168 27 0 183 0
Current children cumulated CPU time (s) 0.2
Current children cumulated vsize (KiB) 6936

Child status: 20
Real time (s): 0.256129
CPU time (s): 0.255961
CPU user time (s): 0.255961
CPU system time (s): 0
CPU usage (%): 99.9344
Max. virtual memory (cumulated for all children) (KiB): 6936

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.255961
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= 342
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= 3
involuntary context switches= 1

runsolver used 0.003999 second user time and 0.005999 second system time

The end

Launcher Data 

Begin job on node109 at 2011-05-29 02:43:08
IDJOB=3420521
IDBENCH=82773
IDSOLVER=1913
FILE ID=node109/3420521-1306629788
RUNJOBID= node109-1306629788-1856
PBS_JOBID= 13471629
Free space on /tmp= 73204 MiB

SOLVER NAME= march_rw 2011-03-02
BENCH NAME= SAT11/random/medium/unif-k3-r4.26-v250-c1065-S860541986-078.UNKNOWN.cnf
COMMAND LINE= ./march_rw BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3420521-1306629788/watcher-3420521-1306629788 -o /tmp/evaluation-result-3420521-1306629788/solver-3420521-1306629788 -C 5000 -W 5100 -M 15500  ./march_rw HOME/instance-3420521-1306629788.cnf

TIME LIMIT= 5000 seconds
MEMORY LIMIT= 15500 MiB
NBCORE= 4

MD5SUM BENCH= 71604c5ae90cca76a60cbb9c7e772fe9
RANDOM SEED=47162439

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:      28664636 kB
Buffers:        208848 kB
Cached:        2143304 kB
SwapCached:      10136 kB
Active:         704356 kB
Inactive:      3375496 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32951124 kB
LowFree:      28664636 kB
SwapTotal:    67111528 kB
SwapFree:     55664332 kB
Dirty:              72 kB
Writeback:          28 kB
AnonPages:     1723976 kB
Mapped:          16212 kB
Slab:           107792 kB
PageTables:      37552 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83587088 kB
Committed_AS: 30887364 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= 73204 MiB
End job on node109 at 2011-05-29 02:43:08