Trace number 3211721

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
SAT09 reference solver: march_hi hiSAT 0.52392 0.525041

General information on the benchmark

Namerandom/medium/
unif-k7-r89-v50-c4450-S1496316430-079.SATISFIABLE.cnf
MD5SUM9105de4ac86db082b0add111004ae308
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.044992
Satisfiable
(Un)Satisfiability was proved
Number of variables50
Number of clauses4450
Sum of the clauses size31150
Maximum clause length7
Minimum clause length7
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 50
Number of clauses of size over 54450

Solver Data 

0.19/0.28	c main():: ***                                   [ march satisfiability solver ]                                   ***
0.19/0.28	c main()::  **                Copyright (C) 2001-2009 M.J.H. Heule, J.E. van Zwieten, and M. Dufour                 **
0.19/0.28	c main()::   *  This program may be redistributed and/or modified under the terms of the GNU Gereral Public License  *
0.19/0.28	c main()::
0.19/0.28	c initFormula():: searching for DIMACS p-line....
0.19/0.28	c full lookahead due to high density!
0.19/0.28	c initFormula():: the DIMACS p-line indicates a CNF of 50 variables and 4450 clauses.
0.19/0.28	c parseCNF():: parsing....
0.19/0.28	c parseCNF():: the CNF contains 0 unary clauses.
0.19/0.28	c runParser():: parsing was successful, warming up engines...
0.19/0.28	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
0.19/0.28	c preprocessing fase I completed:: there are now 50 free variables and 4450 clauses.
0.19/0.28	c stat :: sign balance is biased by 0.006
0.19/0.28	c using k-SAT heuristics (size based diff)
0.19/0.28	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
0.19/0.28	c simplify_formula():: removed 0 tautological, 0 satisfied and 3 duplicate clauses
0.19/0.28	c resolvent_look() :: found 3 resolvents
0.19/0.28	c main():: clause / variable ratio: ( 4453 / 50 ) = 89.06
0.19/0.28	c longest clause has size 7
0.19/0.28	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
0.19/0.28	c number of free variables = 50
0.19/0.28	c dynamic_preselect_setsize :: off
0.19/0.28	c main():: all systems go!
0.19/0.28	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |********************************
c |****************************************************************| ( 0/12) NodeCount: 159
0.29/0.31	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |********************************
c |*********************************
c |**********************************
c |************************************
c |****************************************
c |************************************************
c |*************************************************
c |**************************************************
c |****************************************************
c |********************************************************
c |*********************************************************
c |**********************************************************
c |************************************************************
c |*************************************************************
c |**************************************************************
c |***************************************************************
0.49/0.52	c |000000000001.01010$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$|
0.49/0.52	
c |***************************************************************
0.49/0.52	c
0.49/0.52	c main():: nodeCount: 1156
0.49/0.52	c main():: dead ends in main: 0
0.49/0.52	c main():: lookAheadCount: 53178
0.49/0.52	c main():: unitResolveCount: 1953
0.49/0.52	c main():: time=0.520000
0.49/0.52	c main():: necessary_assignments: 3
0.49/0.52	c main():: bin_sat: 0, bin_unsat 0
0.49/0.52	c main():: doublelook: #: 3548, succes #: 2816
0.49/0.52	c main():: doublelook: overall 6.798 of all possible doublelooks executed
0.49/0.52	c main():: doublelook: succesrate: 79.369, average DL_trigger: 14.144
0.49/0.52	c main():: SOLUTION VERIFIED :-)
0.49/0.52	s SATISFIABLE
0.49/0.52	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 0

Verifier Data 

OK

Watcher Data 

runsolver Copyright (C) 2010-2011 Olivier ROUSSEL

This is runsolver version 3.3.0 (svn: 935)

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-3211721-1303182628/watcher-3211721-1303182628 -o /tmp/evaluation-result-3211721-1303182628/solver-3211721-1303182628 -C 5000 -W 5000 -M 15500 HOME/march_hi HOME/instance-3211721-1303182628.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): 5000 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: 1.79 1.96 1.98 1/172 9208
/proc/meminfo: memFree=16108748/32950928 swapFree=67111528/67111528
[pid=9208] ppid=9206 vsize=1192 CPUtime=0 cores=0,2,4,6
/proc/9208/stat : 9208 (march_hi) R 9206 9208 9180 0 -1 4202496 173 0 0 0 0 0 0 0 25 0 1 0 429861502 1220608 128 33554432000 134512640 135197378 4294096416 18446744073709551615 134565019 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/9208/statm: 298 128 62 168 0 129 0

[startup+0.06317 s]
/proc/loadavg: 1.79 1.96 1.98 1/172 9208
/proc/meminfo: memFree=16108748/32950928 swapFree=67111528/67111528
[pid=9208] ppid=9206 vsize=1584 CPUtime=0.06 cores=0,2,4,6
/proc/9208/stat : 9208 (march_hi) R 9206 9208 9180 0 -1 4202496 538 0 0 0 6 0 0 0 25 0 1 0 429861502 1622016 262 33554432000 134512640 135197378 4294096416 18446744073709551615 134578135 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/9208/statm: 396 262 82 168 0 227 0
Current children cumulated CPU time (s) 0.06
Current children cumulated vsize (KiB) 1584

[startup+0.100194 s]
/proc/loadavg: 1.79 1.96 1.98 1/172 9208
/proc/meminfo: memFree=16108748/32950928 swapFree=67111528/67111528
[pid=9208] ppid=9206 vsize=1584 CPUtime=0.09 cores=0,2,4,6
/proc/9208/stat : 9208 (march_hi) R 9206 9208 9180 0 -1 4202496 538 0 0 0 9 0 0 0 25 0 1 0 429861502 1622016 262 33554432000 134512640 135197378 4294096416 18446744073709551615 134578135 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/9208/statm: 396 262 82 168 0 227 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 1584

[startup+0.300238 s]
/proc/loadavg: 1.79 1.96 1.98 1/172 9208
/proc/meminfo: memFree=16108748/32950928 swapFree=67111528/67111528
[pid=9208] ppid=9206 vsize=2184 CPUtime=0.29 cores=0,2,4,6
/proc/9208/stat : 9208 (march_hi) R 9206 9208 9180 0 -1 4202496 681 0 0 0 29 0 0 0 25 0 1 0 429861502 2236416 370 33554432000 134512640 135197378 4294096416 18446744073709551615 134593379 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/9208/statm: 546 370 93 168 0 377 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 2184

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

[startup+0.500147 s]
/proc/loadavg: 1.79 1.96 1.98 1/172 9208
/proc/meminfo: memFree=16108748/32950928 swapFree=67111528/67111528
[pid=9208] ppid=9206 vsize=2184 CPUtime=0.49 cores=0,2,4,6
/proc/9208/stat : 9208 (march_hi) R 9206 9208 9180 0 -1 4202496 682 0 0 0 49 0 0 0 25 0 1 0 429861502 2236416 371 33554432000 134512640 135197378 4294096416 18446744073709551615 134539469 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/9208/statm: 546 371 93 168 0 377 0
Current children cumulated CPU time (s) 0.49
Current children cumulated vsize (KiB) 2184

Child status: 10
Real time (s): 0.525041
CPU time (s): 0.52392
CPU user time (s): 0.52392
CPU system time (s): 0
CPU usage (%): 99.7865
Max. virtual memory (cumulated for all children) (KiB): 2184

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.52392
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= 684
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= 2
involuntary context switches= 27

runsolver used 0.000999 second user time and 0.005999 second system time

The end

Launcher Data 

Begin job on node126 at 2011-04-19 05:10:28
IDJOB=3211721
IDBENCH=83079
IDSOLVER=1627
FILE ID=node126/3211721-1303182628
RUNJOBID= node126-1303182628-9198
PBS_JOBID= 13021080
Free space on /tmp= 73264 MiB

SOLVER NAME= SAT09 reference solver: march_hi hi
BENCH NAME= SAT11/random/medium/unif-k7-r89-v50-c4450-S1496316430-079.SATISFIABLE.cnf
COMMAND LINE= HOME/march_hi BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3211721-1303182628/watcher-3211721-1303182628 -o /tmp/evaluation-result-3211721-1303182628/solver-3211721-1303182628 -C 5000 -W 5000 -M 15500  HOME/march_hi HOME/instance-3211721-1303182628.cnf

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

MD5SUM BENCH= 9105de4ac86db082b0add111004ae308
RANDOM SEED=1756068605

node126.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		: 2666.783
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	: 5333.56
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		: 2666.783
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		: 2666.783
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		: 2666.783
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	: 5332.74
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		: 2666.783
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	: 5332.80
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		: 2666.783
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		: 2666.783
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		: 2666.783
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	: 5332.76
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]


/proc/meminfo:
MemTotal:     32950928 kB
MemFree:      16109028 kB
Buffers:        727896 kB
Cached:       15692896 kB
SwapCached:          0 kB
Active:        8094728 kB
Inactive:      8389616 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32950928 kB
LowFree:      16109028 kB
SwapTotal:    67111528 kB
SwapFree:     67111528 kB
Dirty:             964 kB
Writeback:           0 kB
AnonPages:       63516 kB
Mapped:          14332 kB
Slab:           292788 kB
PageTables:       4992 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83586992 kB
Committed_AS:   184732 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= 73264 MiB
End job on node126 at 2011-04-19 05:10:29