Trace number 3420734

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 0.559914 0.559987

General information on the benchmark

Namerandom/medium/
unif-k3-r4.26-v300-c1278-S566093033-041.UNKNOWN.cnf
MD5SUM85e2085fcd9bc0d9740c43994b898153
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.559914
Satisfiable
(Un)Satisfiability was proved
Number of variables300
Number of clauses1278
Sum of the clauses size3834
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 31278
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 300 variables and 1278 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, 9 satisfied and 0 duplicate clauses
0.00/0.00	c preprocessing fase I completed:: there are now 298 free variables and 1269 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 179 duplicate clauses
0.00/0.00	c resolvent_look() :: found 99 resolvents
0.00/0.00	c main():: clause / variable ratio: ( 1368 / 300 ) = 4.56
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 = 298
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 |****************************************************************| (0/6) NodeCount: 116
0.00/0.03	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |********************************
c |*********************************
c |**********************************
c |************************************
c |****************************************
c |************************************************
c |*************************************************
c |**************************************************
c |****************************************************
c |********************************************************
c |*********************************************************
c |**********************************************************
c |************************************************************
c |*************************************************************
c |**************************************************************
c |***************************************************************
c |****************************************************************| (1/6) NodeCount: 693
0.09/0.17	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 |******************************************************
c |*******************************************************
c |********************************************************
c |*********************************************************
c |**********************************************************
c |***********************************************************
c |************************************************************
c |*************************************************************
c |**************************************************************
c |****************************************************************| (2/6) NodeCount: 1305
0.29/0.34	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 |****************************************
c |*****************************************
c |******************************************
c |*******************************************
c |********************************************
c |*********************************************
c |**********************************************
c |************************************************
c |*************************************************
c |**************************************************
c |***************************************************
c |****************************************************
c |*****************************************************
c |******************************************************
c |********************************************************
c |*********************************************************
c |**********************************************************
c |************************************************************
c |****************************************************************| (3/6) NodeCount: 1734
0.39/0.47	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 |*****************************************
c |******************************************
c |********************************************
c |************************************************
c |*************************************************
c |**************************************************
c |****************************************************
c |********************************************************
c |****************************************************************| (4/6) NodeCount: 1978
0.49/0.55	c |----------------------------------------------------------------|
c |**
c |***
c |****
c |*****
c |******
c |********
c |****************
c |*****************
c |******************
c |********************
c |************************
c |********************************
c |*********************************
c |**********************************
c |************************************
c |****************************************
c |************************************************
c |****************************************************************| (5/6) NodeCount: 2005
0.49/0.55	c |----------------------------------------------------------------|
c |
0.49/0.55	c
0.49/0.55	c main():: nodeCount: 2005
0.49/0.55	c main():: dead ends in main: 11
0.49/0.55	c main():: lookAheadCount: 262004
0.49/0.55	c main():: unitResolveCount: 12316
0.49/0.55	c main():: time=0.550000
0.49/0.55	c main():: necessary_assignments: 267
0.49/0.55	c main():: bin_sat: 0, bin_unsat 0
0.49/0.55	c main():: doublelook: #: 10823, succes #: 8356
0.49/0.55	c main():: doublelook: overall 4.215 of all possible doublelooks executed
0.49/0.55	c main():: doublelook: succesrate: 77.206, average DL_trigger: 45.527
0.49/0.55	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: 977)

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-3420734-1307653914/watcher-3420734-1307653914 -o /tmp/evaluation-result-3420734-1307653914/solver-3420734-1307653914 -C 5000 -W 5100 -M 15500 ./march_rw HOME/instance-3420734-1307653914.cnf 

running on 4 cores: 0,2,4,6

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: 7.27 7.84 7.20 3/177 30182
/proc/meminfo: memFree=32110232/32950928 swapFree=67056212/67111528
[pid=30182] ppid=30180 vsize=6592 CPUtime=0 cores=0,2,4,6
/proc/30182/stat : 30182 (march_rw) R 30180 30182 27745 0 -1 4202496 271 0 0 0 0 0 0 0 25 0 1 0 955622081 6750208 213 33554432000 4194304 4300876 140736353076704 18446744073709551615 256415088395 0 0 4096 0 0 0 0 17 0 0 0 0
/proc/30182/statm: 1648 213 136 27 0 97 0

[startup+0.0508599 s]
/proc/loadavg: 7.27 7.84 7.20 3/177 30182
/proc/meminfo: memFree=32110232/32950928 swapFree=67056212/67111528
[pid=30182] ppid=30180 vsize=7092 CPUtime=0.04 cores=0,2,4,6
/proc/30182/stat : 30182 (march_rw) R 30180 30182 27745 0 -1 4202496 358 0 0 0 4 0 0 0 25 0 1 0 955622081 7262208 300 33554432000 4194304 4300876 140736353076704 18446744073709551615 4214448 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/30182/statm: 1773 300 168 27 0 222 0
Current children cumulated CPU time (s) 0.04
Current children cumulated vsize (KiB) 7092

[startup+0.100855 s]
/proc/loadavg: 7.27 7.84 7.20 3/177 30182
/proc/meminfo: memFree=32110232/32950928 swapFree=67056212/67111528
[pid=30182] ppid=30180 vsize=7092 CPUtime=0.09 cores=0,2,4,6
/proc/30182/stat : 30182 (march_rw) R 30180 30182 27745 0 -1 4202496 362 0 0 0 9 0 0 0 25 0 1 0 955622081 7262208 304 33554432000 4194304 4300876 140736353076704 18446744073709551615 4200325 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/30182/statm: 1773 304 168 27 0 222 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 7092

[startup+0.300826 s]
/proc/loadavg: 7.27 7.84 7.20 3/177 30182
/proc/meminfo: memFree=32110232/32950928 swapFree=67056212/67111528
[pid=30182] ppid=30180 vsize=7092 CPUtime=0.29 cores=0,2,4,6
/proc/30182/stat : 30182 (march_rw) R 30180 30182 27745 0 -1 4202496 368 0 0 0 29 0 0 0 25 0 1 0 955622081 7262208 310 33554432000 4194304 4300876 140736353076704 18446744073709551615 256414786750 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/30182/statm: 1773 310 168 27 0 222 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 7092

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

[startup+0.500774 s]
/proc/loadavg: 7.27 7.84 7.20 3/177 30182
/proc/meminfo: memFree=32110232/32950928 swapFree=67056212/67111528
[pid=30182] ppid=30180 vsize=7092 CPUtime=0.49 cores=0,2,4,6
/proc/30182/stat : 30182 (march_rw) R 30180 30182 27745 0 -1 4202496 369 0 0 0 49 0 0 0 25 0 1 0 955622081 7262208 311 33554432000 4194304 4300876 140736353076704 18446744073709551615 4286138 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/30182/statm: 1773 311 168 27 0 222 0
Current children cumulated CPU time (s) 0.49
Current children cumulated vsize (KiB) 7092

Child status: 20
Real time (s): 0.559987
CPU time (s): 0.559914
CPU user time (s): 0.557915
CPU system time (s): 0.001999
CPU usage (%): 99.9869
Max. virtual memory (cumulated for all children) (KiB): 7092

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.557915
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= 373
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= 3

runsolver used 0.001999 second user time and 0.004999 second system time

The end

Launcher Data 

Begin job on node115 at 2011-06-09 23:11:54
IDJOB=3420734
IDBENCH=82986
IDSOLVER=1913
FILE ID=node115/3420734-1307653914
RUNJOBID= node115-1307653911-30116
PBS_JOBID= 13549376
Free space on /tmp= 74168 MiB

SOLVER NAME= march_rw 2011-03-02
BENCH NAME= SAT11/random/medium/unif-k3-r4.26-v300-c1278-S566093033-041.UNKNOWN.cnf
COMMAND LINE= ./march_rw BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3420734-1307653914/watcher-3420734-1307653914 -o /tmp/evaluation-result-3420734-1307653914/solver-3420734-1307653914 -C 5000 -W 5100 -M 15500  ./march_rw HOME/instance-3420734-1307653914.cnf

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

MD5SUM BENCH= 85e2085fcd9bc0d9740c43994b898153
RANDOM SEED=458566686

node115.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		: 2666.811
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	: 5333.62
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		: 2666.811
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	: 5226.15
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		: 2666.811
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		: 2666.811
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		: 2666.811
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		: 2666.811
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	: 5332.74
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		: 2666.811
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		: 2666.811
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:     32950928 kB
MemFree:      32110512 kB
Buffers:        212052 kB
Cached:         418372 kB
SwapCached:       9444 kB
Active:         315144 kB
Inactive:       336376 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32950928 kB
LowFree:      32110512 kB
SwapTotal:    67111528 kB
SwapFree:     67056212 kB
Dirty:             680 kB
Writeback:           0 kB
AnonPages:       18508 kB
Mapped:          13396 kB
Slab:           124684 kB
PageTables:       4740 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83586992 kB
Committed_AS:   210020 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= 74168 MiB
End job on node115 at 2011-06-09 23:11:55