Trace number 3420515

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 0.677896 0.678095

General information on the benchmark

Namerandom/medium/
unif-k3-r4.26-v300-c1278-S1452052526-056.UNKNOWN.cnf
MD5SUM4d66ba50f7a6612793464325a5c5e742
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.677896
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, 12 satisfied and 0 duplicate clauses
0.00/0.00	c preprocessing fase I completed:: there are now 297 free variables and 1266 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 174 duplicate clauses
0.00/0.00	c resolvent_look() :: found 102 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 = 297
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 |****************************************************************| (0/5) NodeCount: 164
0.00/0.04	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |********************************
c |*********************************
c |**********************************
c |************************************
c |****************************************
c |************************************************
c |*************************************************
c |**************************************************
c |****************************************************
c |********************************************************
c |*********************************************************
c |**********************************************************
c |************************************************************
c |*************************************************************
c |**************************************************************
c |****************************************************************| (1/5) NodeCount: 857
0.19/0.22	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 |****************************************************************| (2/5) NodeCount: 1947
0.39/0.49	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 |****************************************************************| (3/5) NodeCount: 2358
0.59/0.61	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |*****
c |******
c |********
c |*********
c |**********
c |************
c |****************
c |*****************
c |******************
c |********************
c |************************
c |********************************
c |*********************************
c |**********************************
c |************************************
c |****************************************
c |************************************************
c |****************************************************************| (4/5) NodeCount: 2590
0.59/0.67	c |----------------------------------------------------------------|
c |**
c |****
c |********
c |****************
c |********************************
c |****************************************************************| (5/5) NodeCount: 2591
0.59/0.67	c |----------------------------------------------------------------|
c |
0.59/0.67	c
0.59/0.67	c main():: nodeCount: 2591
0.59/0.67	c main():: dead ends in main: 16
0.59/0.67	c main():: lookAheadCount: 312222
0.59/0.67	c main():: unitResolveCount: 16075
0.59/0.67	c main():: time=0.670000
0.59/0.67	c main():: necessary_assignments: 317
0.59/0.67	c main():: bin_sat: 0, bin_unsat 0
0.59/0.67	c main():: doublelook: #: 13341, succes #: 10284
0.59/0.67	c main():: doublelook: overall 4.363 of all possible doublelooks executed
0.59/0.67	c main():: doublelook: succesrate: 77.086, average DL_trigger: 44.728
0.59/0.67	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-3420515-1306625922/watcher-3420515-1306625922 -o /tmp/evaluation-result-3420515-1306625922/solver-3420515-1306625922 -C 5000 -W 5100 -M 15500 ./march_rw HOME/instance-3420515-1306625922.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: 2.00 2.02 2.00 2/514 2052
/proc/meminfo: memFree=15836816/32950940 swapFree=67111364/67111528
[pid=2052] ppid=2050 vsize=6592 CPUtime=0 cores=0,2,4,6
/proc/2052/stat : 2052 (march_rw) R 2050 2052 1534 0 -1 4202496 265 0 0 0 0 0 0 0 25 0 1 0 852822968 6750208 208 33554432000 4194304 4300876 140735968493264 18446744073709551615 215988253381 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/2052/statm: 1648 208 136 27 0 97 0

[startup+0.0867299 s]
/proc/loadavg: 2.00 2.02 2.00 2/514 2052
/proc/meminfo: memFree=15836816/32950940 swapFree=67111364/67111528
[pid=2052] ppid=2050 vsize=7092 CPUtime=0.08 cores=0,2,4,6
/proc/2052/stat : 2052 (march_rw) R 2050 2052 1534 0 -1 4202496 361 0 0 0 8 0 0 0 25 0 1 0 852822968 7262208 304 33554432000 4194304 4300876 140735968493264 18446744073709551615 4200267 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/2052/statm: 1773 304 168 27 0 222 0
Current children cumulated CPU time (s) 0.08
Current children cumulated vsize (KiB) 7092

[startup+0.100722 s]
/proc/loadavg: 2.00 2.02 2.00 2/514 2052
/proc/meminfo: memFree=15836816/32950940 swapFree=67111364/67111528
[pid=2052] ppid=2050 vsize=7092 CPUtime=0.09 cores=0,2,4,6
/proc/2052/stat : 2052 (march_rw) R 2050 2052 1534 0 -1 4202496 363 0 0 0 9 0 0 0 25 0 1 0 852822968 7262208 306 33554432000 4194304 4300876 140735968493264 18446744073709551615 4228535 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/2052/statm: 1773 306 168 27 0 222 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 7092

[startup+0.300692 s]
/proc/loadavg: 2.00 2.02 2.00 2/514 2052
/proc/meminfo: memFree=15836816/32950940 swapFree=67111364/67111528
[pid=2052] ppid=2050 vsize=7092 CPUtime=0.29 cores=0,2,4,6
/proc/2052/stat : 2052 (march_rw) R 2050 2052 1534 0 -1 4202496 368 0 0 0 29 0 0 0 25 0 1 0 852822968 7262208 311 33554432000 4194304 4300876 140735968493264 18446744073709551615 4214411 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/2052/statm: 1773 311 168 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+0.500651 s]
/proc/loadavg: 2.00 2.02 2.00 2/514 2052
/proc/meminfo: memFree=15836816/32950940 swapFree=67111364/67111528
[pid=2052] ppid=2050 vsize=7092 CPUtime=0.49 cores=0,2,4,6
/proc/2052/stat : 2052 (march_rw) R 2050 2052 1534 0 -1 4202496 371 0 0 0 49 0 0 0 25 0 1 0 852822968 7262208 314 33554432000 4194304 4300876 140735968493264 18446744073709551615 4214450 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/2052/statm: 1773 314 168 27 0 222 0
Current children cumulated CPU time (s) 0.49
Current children cumulated vsize (KiB) 7092

[startup+0.600634 s]
/proc/loadavg: 2.00 2.02 2.00 2/514 2052
/proc/meminfo: memFree=15836816/32950940 swapFree=67111364/67111528
[pid=2052] ppid=2050 vsize=7092 CPUtime=0.59 cores=0,2,4,6
/proc/2052/stat : 2052 (march_rw) R 2050 2052 1534 0 -1 4202496 372 0 0 0 59 0 0 0 25 0 1 0 852822968 7262208 315 33554432000 4194304 4300876 140735968493264 18446744073709551615 4225296 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/2052/statm: 1773 315 168 27 0 222 0
Current children cumulated CPU time (s) 0.59
Current children cumulated vsize (KiB) 7092

Child status: 20
Real time (s): 0.678095
CPU time (s): 0.677896
CPU user time (s): 0.676897
CPU system time (s): 0.000999
CPU usage (%): 99.9706
Max. virtual memory (cumulated for all children) (KiB): 7092

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.676897
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= 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= 7
involuntary context switches= 1

runsolver used 0.003999 second user time and 0.014997 second system time

The end

Launcher Data 

Begin job on node117 at 2011-05-29 01:38:42
IDJOB=3420515
IDBENCH=82767
IDSOLVER=1913
FILE ID=node117/3420515-1306625922
RUNJOBID= node117-1306614438-1552
PBS_JOBID= 13471626
Free space on /tmp= 73224 MiB

SOLVER NAME= march_rw 2011-03-02
BENCH NAME= SAT11/random/medium/unif-k3-r4.26-v300-c1278-S1452052526-056.UNKNOWN.cnf
COMMAND LINE= ./march_rw BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3420515-1306625922/watcher-3420515-1306625922 -o /tmp/evaluation-result-3420515-1306625922/solver-3420515-1306625922 -C 5000 -W 5100 -M 15500  ./march_rw HOME/instance-3420515-1306625922.cnf

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

MD5SUM BENCH= 4d66ba50f7a6612793464325a5c5e742
RANDOM SEED=679935703

node117.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		: 2666.849
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	: 5333.69
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		: 2666.849
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		: 2666.849
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		: 2666.849
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		: 2666.849
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		: 2666.849
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		: 2666.849
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		: 2666.849
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	: 5267.44
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]


/proc/meminfo:
MemTotal:     32950940 kB
MemFree:      15836980 kB
Buffers:        330328 kB
Cached:        6019896 kB
SwapCached:          0 kB
Active:       12539572 kB
Inactive:      4206964 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32950940 kB
LowFree:      15836980 kB
SwapTotal:    67111528 kB
SwapFree:     67111364 kB
Dirty:              32 kB
Writeback:           0 kB
AnonPages:    10395888 kB
Mapped:          42204 kB
Slab:           239564 kB
PageTables:      58888 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83586996 kB
Committed_AS: 150446472 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= 73224 MiB
End job on node117 at 2011-05-29 01:38:43