Trace number 1517942

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_nn nnUNSAT 19.3011 19.3057

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/UNKNOWN/360/
unif-k3-r4.25-v360-c1530-S404185236-001.cnf
MD5SUM0374a56a4be774bc099f027bd9c7fc30
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark16.2885
Satisfiable
(Un)Satisfiability was proved
Number of variables360
Number of clauses1530
Sum of the clauses size4590
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 31530
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

0.00/0.01	c main():: ***                                   [ march satisfiability solver ]                                   ***
0.00/0.01	c main()::  **                Copyright (C) 2001-2009 M.J.H. Heule, J.E. van Zwieten, and M. Dufour                 **
0.00/0.01	c main()::   *  This program may be redistributed and/or modified under the terms of the GNU Gereral Public License  *
0.00/0.01	c main()::
0.00/0.01	c initFormula():: searching for DIMACS p-line....
0.00/0.01	c initFormula():: the DIMACS p-line indicates a CNF of 360 variables and 1530 clauses.
0.00/0.01	c parseCNF():: parsing....
0.00/0.01	c parseCNF():: the CNF contains 0 unary clauses.
0.00/0.01	c runParser():: parsing was successful, warming up engines...
0.00/0.01	c simplify_formula():: removed 0 tautological, 4 satisfied and 0 duplicate clauses
0.00/0.01	c preprocessing fase I completed:: there are now 359 free variables and 1526 clauses.
0.00/0.01	c stat :: sign balance is biased by 0.487
0.00/0.01	c using 3-SAT heuristics (occurence based diff)
0.00/0.01	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
0.00/0.01	c simplify_formula():: removed 0 tautological, 0 satisfied and 164 duplicate clauses
0.00/0.01	c resolvent_look() :: found 90 resolvents
0.00/0.01	c lessRedundantTransformation():: nothing to be done.
0.00/0.01	c transformTo3SAT():: you gave me 360 variables and 1616 clauses.
0.00/0.01	c transformTo3SAT():: by the way, the maximal clause length before transformation was 3.
0.00/0.01	c transformTo3SAT():: I will add 0 variables and 0 clauses!
0.00/0.01	c transformTo3SAT():: the transformation yielded 360 variabels and 1616 clauses.
0.00/0.01	c main():: clause / variable ratio: ( 1616 / 360 ) = 4.49
0.00/0.01	c longest clause has size 3
0.00/0.01	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
0.00/0.01	c number of free variables = 359
0.00/0.01	c dynamic_preselect_setsize :: off
0.00/0.01	c main():: all systems go!
0.00/0.01	c |----------------------------------------------------------------|
c |*
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c |****************************************************************| ( 0/999) NodeCount: 23
0.00/0.02	c |----------------------------------------------------------------|
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c |****************************************************************| ( 1/999) NodeCount: 264
0.04/0.09	c |----------------------------------------------------------------|
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c |****************************************************************| ( 2/999) NodeCount: 1432
0.39/0.49	c |----------------------------------------------------------------|
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c |****************************************************************| ( 3/999) NodeCount: 4927
1.89/1.91	c |----------------------------------------------------------------|
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c |****************************************************************| ( 4/999) NodeCount: 11845
5.09/5.17	c |----------------------------------------------------------------|
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c |****************************************************************| ( 5/999) NodeCount: 20873
9.89/9.93	c |----------------------------------------------------------------|
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c |****************************************************************| ( 6/999) NodeCount: 28829
14.49/14.52	c |----------------------------------------------------------------|
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c |****************************************************************| ( 7/999) NodeCount: 33671
17.39/17.47	c |----------------------------------------------------------------|
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c |****************************************************************| ( 8/999) NodeCount: 35801
18.69/18.77	c |----------------------------------------------------------------|
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c |****************************************************************| ( 9/999) NodeCount: 36510
19.09/19.20	c |----------------------------------------------------------------|
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c |****************************************************************| (10/999) NodeCount: 36652
19.19/19.29	c |----------------------------------------------------------------|
c |********************************
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c |****************************************************************| (11/999) NodeCount: 36663
19.29/19.30	c |----------------------------------------------------------------|
c |
19.29/19.30	c
19.29/19.30	c main():: nodeCount: 36663
19.29/19.30	c main():: dead ends in main: 1032
19.29/19.30	c main():: lookAheadCount: 2622974
19.29/19.30	c main():: unitResolveCount: 660393
19.29/19.30	c main():: time=19.290000
19.29/19.30	c main():: necessary_assignments: 9325
19.29/19.30	c main():: bin_sat: 0, bin_unsat 0
19.29/19.30	c main():: doublelook: #: 145237, succes #: 104953
19.29/19.30	c main():: doublelook: overall 5.725 of all possible doublelooks executed
19.29/19.30	c main():: doublelook: succesrate: 72.263, average DL_trigger: 45.396
19.29/19.30	s UNSATISFIABLE

Verifier Data 

No possible verification on an UNSAT instance

Watcher Data 

runsolver version 3.2.9 (svn:489) (c) roussel@cril.univ-artois.fr

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-1517942-1238293175/watcher-1517942-1238293175 -o /tmp/evaluation-result-1517942-1238293175/solver-1517942-1238293175 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/march_nn HOME/instance-1517942-1238293175.cnf 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1230 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 1800 seconds
Enforcing VSIZE limit (soft limit, will send SIGTERM then SIGKILL): 1843200 KiB
Enforcing VSIZE limit (hard limit, stack expansion will fail with SIGSEGV, brk() and mmap() will return ENOMEM): 1894400 KiB
Solver output will be limited to a maximum of 15728640 bytes. The first 1048576 bytes and the last 14680064 bytes will be preserved
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 0.92 0.98 0.99 3/64 13014
/proc/meminfo: memFree=1064608/2055920 swapFree=4178260/4192956
[pid=13014] ppid=13012 vsize=972 CPUtime=0
/proc/13014/stat : 13014 (march_nn) R 13012 13014 12245 0 -1 4194304 135 0 0 0 0 0 0 0 18 0 1 0 867908961 995328 118 1992294400 134512640 135197250 4294956240 18446744073709551615 134560770 0 0 4096 0 0 0 0 17 1 0 0
/proc/13014/statm: 243 118 67 167 0 74 0

[startup+0.0463351 s]
/proc/loadavg: 0.92 0.98 0.99 3/64 13014
/proc/meminfo: memFree=1064608/2055920 swapFree=4178260/4192956
[pid=13014] ppid=13012 vsize=1508 CPUtime=0.04
/proc/13014/stat : 13014 (march_nn) R 13012 13014 12245 0 -1 4194304 236 0 0 0 4 0 0 0 18 0 1 0 867908961 1544192 219 1992294400 134512640 135197250 4294956240 18446744073709551615 134570906 0 0 4096 0 0 0 0 17 1 0 0
/proc/13014/statm: 377 219 93 167 0 208 0
Current children cumulated CPU time (s) 0.04
Current children cumulated vsize (KiB) 1508

[startup+0.101342 s]
/proc/loadavg: 0.92 0.98 0.99 3/64 13014
/proc/meminfo: memFree=1064608/2055920 swapFree=4178260/4192956
[pid=13014] ppid=13012 vsize=1508 CPUtime=0.09
/proc/13014/stat : 13014 (march_nn) R 13012 13014 12245 0 -1 4194304 246 0 0 0 9 0 0 0 18 0 1 0 867908961 1544192 229 1992294400 134512640 135197250 4294956240 18446744073709551615 134618398 0 0 4096 0 0 0 0 17 1 0 0
/proc/13014/statm: 377 229 93 167 0 208 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 1508

[startup+0.301371 s]
/proc/loadavg: 0.92 0.98 0.99 3/64 13014
/proc/meminfo: memFree=1064608/2055920 swapFree=4178260/4192956
[pid=13014] ppid=13012 vsize=1640 CPUtime=0.29
/proc/13014/stat : 13014 (march_nn) R 13012 13014 12245 0 -1 4194304 261 0 0 0 29 0 0 0 19 0 1 0 867908961 1679360 244 1992294400 134512640 135197250 4294956240 18446744073709551615 134539274 0 0 4096 0 0 0 0 17 1 0 0
/proc/13014/statm: 410 244 93 167 0 241 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 1640

[startup+0.70143 s]
/proc/loadavg: 0.92 0.98 0.99 3/64 13014
/proc/meminfo: memFree=1064608/2055920 swapFree=4178260/4192956
[pid=13014] ppid=13012 vsize=1640 CPUtime=0.69
/proc/13014/stat : 13014 (march_nn) R 13012 13014 12245 0 -1 4194304 283 0 0 0 69 0 0 0 22 0 1 0 867908961 1679360 266 1992294400 134512640 135197250 4294956240 18446744073709551615 134713095 0 0 4096 0 0 0 0 17 1 0 0
/proc/13014/statm: 410 266 93 167 0 241 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 1640

[startup+1.50155 s]
/proc/loadavg: 0.92 0.98 0.99 2/65 13015
/proc/meminfo: memFree=1063832/2055920 swapFree=4178260/4192956
[pid=13014] ppid=13012 vsize=1944 CPUtime=1.49
/proc/13014/stat : 13014 (march_nn) R 13012 13014 12245 0 -1 4194304 324 0 0 0 149 0 0 0 25 0 1 0 867908961 1990656 307 1992294400 134512640 135197250 4294956240 18446744073709551615 134525278 0 0 4096 0 0 0 0 17 1 0 0
/proc/13014/statm: 486 307 93 167 0 317 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 1944

[startup+3.10178 s]
/proc/loadavg: 0.92 0.98 0.99 2/65 13015
/proc/meminfo: memFree=1063512/2055920 swapFree=4178260/4192956
[pid=13014] ppid=13012 vsize=2012 CPUtime=3.09
/proc/13014/stat : 13014 (march_nn) R 13012 13014 12245 0 -1 4194304 351 0 0 0 309 0 0 0 25 0 1 0 867908961 2060288 334 1992294400 134512640 135197250 4294956240 18446744073709551615 134552394 0 0 4096 0 0 0 0 17 1 0 0
/proc/13014/statm: 503 334 93 167 0 334 0
Current children cumulated CPU time (s) 3.09
Current children cumulated vsize (KiB) 2012

[startup+6.30125 s]
/proc/loadavg: 0.93 0.98 0.99 2/65 13015
/proc/meminfo: memFree=1063256/2055920 swapFree=4178260/4192956
[pid=13014] ppid=13012 vsize=2264 CPUtime=6.29
/proc/13014/stat : 13014 (march_nn) R 13012 13014 12245 0 -1 4194304 401 0 0 0 629 0 0 0 25 0 1 0 867908961 2318336 384 1992294400 134512640 135197250 4294956240 18446744073709551615 134539379 0 0 4096 0 0 0 0 17 1 0 0
/proc/13014/statm: 566 384 93 167 0 397 0
Current children cumulated CPU time (s) 6.29
Current children cumulated vsize (KiB) 2264

[startup+12.7012 s]
/proc/loadavg: 0.93 0.98 0.99 2/65 13015
/proc/meminfo: memFree=1062744/2055920 swapFree=4178260/4192956
[pid=13014] ppid=13012 vsize=2724 CPUtime=12.69
/proc/13014/stat : 13014 (march_nn) R 13012 13014 12245 0 -1 4194304 532 0 0 0 1269 0 0 0 25 0 1 0 867908961 2789376 497 1992294400 134512640 135197250 4294956240 18446744073709551615 134525324 0 0 4096 0 0 0 0 17 1 0 0
/proc/13014/statm: 681 497 93 167 0 512 0
Current children cumulated CPU time (s) 12.69
Current children cumulated vsize (KiB) 2724

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

[startup+15.9017 s]
/proc/loadavg: 0.94 0.98 0.99 2/65 13015
/proc/meminfo: memFree=1062552/2055920 swapFree=4178260/4192956
[pid=13014] ppid=13012 vsize=3064 CPUtime=15.89
/proc/13014/stat : 13014 (march_nn) R 13012 13014 12245 0 -1 4194304 573 0 0 0 1589 0 0 0 25 0 1 0 867908961 3137536 538 1992294400 134512640 135197250 4294956240 18446744073709551615 134539266 0 0 4096 0 0 0 0 17 1 0 0
/proc/13014/statm: 766 538 93 167 0 597 0
Current children cumulated CPU time (s) 15.89
Current children cumulated vsize (KiB) 3064

[startup+17.5019 s]
/proc/loadavg: 0.94 0.98 0.99 2/65 13015
/proc/meminfo: memFree=1062424/2055920 swapFree=4178260/4192956
[pid=13014] ppid=13012 vsize=3064 CPUtime=17.49
/proc/13014/stat : 13014 (march_nn) R 13012 13014 12245 0 -1 4194304 594 0 0 0 1749 0 0 0 25 0 1 0 867908961 3137536 559 1992294400 134512640 135197250 4294956240 18446744073709551615 134541235 0 0 4096 0 0 0 0 17 1 0 0
/proc/13014/statm: 766 559 93 167 0 597 0
Current children cumulated CPU time (s) 17.49
Current children cumulated vsize (KiB) 3064

[startup+18.302 s]
/proc/loadavg: 0.94 0.98 0.99 2/65 13015
/proc/meminfo: memFree=1062424/2055920 swapFree=4178260/4192956
[pid=13014] ppid=13012 vsize=3064 CPUtime=18.29
/proc/13014/stat : 13014 (march_nn) R 13012 13014 12245 0 -1 4194304 604 0 0 0 1829 0 0 0 25 0 1 0 867908961 3137536 569 1992294400 134512640 135197250 4294956240 18446744073709551615 134526735 0 0 4096 0 0 0 0 17 1 0 0
/proc/13014/statm: 766 569 93 167 0 597 0
Current children cumulated CPU time (s) 18.29
Current children cumulated vsize (KiB) 3064

[startup+19.1011 s]
/proc/loadavg: 0.94 0.98 0.99 2/65 13015
/proc/meminfo: memFree=1062360/2055920 swapFree=4178260/4192956
[pid=13014] ppid=13012 vsize=3064 CPUtime=19.09
/proc/13014/stat : 13014 (march_nn) R 13012 13014 12245 0 -1 4194304 614 0 0 0 1909 0 0 0 25 0 1 0 867908961 3137536 579 1992294400 134512640 135197250 4294956240 18446744073709551615 134542117 0 0 4096 0 0 0 0 17 1 0 0
/proc/13014/statm: 766 579 93 167 0 597 0
Current children cumulated CPU time (s) 19.09
Current children cumulated vsize (KiB) 3064

[startup+19.3012 s]
/proc/loadavg: 0.94 0.98 0.99 2/65 13015
/proc/meminfo: memFree=1062360/2055920 swapFree=4178260/4192956
[pid=13014] ppid=13012 vsize=3064 CPUtime=19.29
/proc/13014/stat : 13014 (march_nn) R 13012 13014 12245 0 -1 4194304 617 0 0 0 1929 0 0 0 25 0 1 0 867908961 3137536 582 1992294400 134512640 135197250 4294956240 18446744073709551615 134572986 0 0 4096 0 0 0 0 17 1 0 0
/proc/13014/statm: 766 582 93 167 0 597 0
Current children cumulated CPU time (s) 19.29
Current children cumulated vsize (KiB) 3064

Child status: 20
Real time (s): 19.3057
CPU time (s): 19.3011
CPU user time (s): 19.2951
CPU system time (s): 0.005999
CPU usage (%): 99.976
Max. virtual memory (cumulated for all children) (KiB): 3064

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 19.2951
system time used= 0.005999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 619
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= 30

runsolver used 0.021996 second user time and 0.055991 second system time

The end

Launcher Data 

Begin job on node39 at 2009-03-29 04:19:35
IDJOB=1517942
IDBENCH=70638
IDSOLVER=522
FILE ID=node39/1517942-1238293175
PBS_JOBID= 9060969
Free space on /tmp= 66228 MiB

SOLVER NAME= march_nn nn
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/UNKNOWN/360/unif-k3-r4.25-v360-c1530-S404185236-001.cnf
COMMAND LINE= HOME/march_nn BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1517942-1238293175/watcher-1517942-1238293175 -o /tmp/evaluation-result-1517942-1238293175/solver-1517942-1238293175 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/march_nn HOME/instance-1517942-1238293175.cnf

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB
MAX NB THREAD= 0

MD5SUM BENCH= 0374a56a4be774bc099f027bd9c7fc30
RANDOM SEED=408052483

node39.alineos.net Linux 2.6.9-22.EL.rootsmp #1 SMP Mon Oct 3 08:59:52 CEST 2005

/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 15
model		: 4
model name	:                   Intel(R) Xeon(TM) CPU 3.00GHz
stepping	: 3
cpu MHz		: 3000.285
cache size	: 2048 KB
fpu		: yes
fpu_exception	: yes
cpuid level	: 5
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 lm pni monitor ds_cpl cid cx16 xtpr
bogomips	: 5914.62
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 15
model		: 4
model name	:                   Intel(R) Xeon(TM) CPU 3.00GHz
stepping	: 3
cpu MHz		: 3000.285
cache size	: 2048 KB
fpu		: yes
fpu_exception	: yes
cpuid level	: 5
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 lm pni monitor ds_cpl cid cx16 xtpr
bogomips	: 5586.94
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2055920 kB
MemFree:       1065024 kB
Buffers:         90728 kB
Cached:         804756 kB
SwapCached:       8168 kB
Active:          88596 kB
Inactive:       816828 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1065024 kB
SwapTotal:     4192956 kB
SwapFree:      4178260 kB
Dirty:             788 kB
Writeback:           0 kB
Mapped:          16700 kB
Slab:            71728 kB
Committed_AS:  2194296 kB
PageTables:       1188 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264952 kB
VmallocChunk: 536605679 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 66228 MiB
End job on node39 at 2009-03-29 04:19:54