Trace number 1517990

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 17.2864 17.2915

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/UNKNOWN/360/
unif-k3-r4.25-v360-c1530-S23373420-028.cnf
MD5SUMc80ac2513e7d4a317f260e6d71a9bb08
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark15.2117
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, 0 satisfied and 0 duplicate clauses
0.00/0.01	c preprocessing fase I completed:: there are now 360 free variables and 1530 clauses.
0.00/0.01	c stat :: sign balance is biased by 0.476
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 163 duplicate clauses
0.00/0.01	c resolvent_look() :: found 97 resolvents
0.00/0.01	c lessRedundantTransformation():: nothing to be done.
0.00/0.01	c transformTo3SAT():: you gave me 360 variables and 1627 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 1627 clauses.
0.00/0.01	c main():: clause / variable ratio: ( 1627 / 360 ) = 4.52
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 = 360
0.00/0.01	c dynamic_preselect_setsize :: off
0.00/0.01	c main():: all systems go!
0.00/0.01	c |----------------------------------------------------------------|
c |*
c |**
c |****
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c |****************
c |********************************
c |****************************************************************| ( 0/999) NodeCount: 20
0.00/0.02	c |----------------------------------------------------------------|
c |*
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c |****************************************************************| ( 1/999) NodeCount: 207
0.00/0.07	c |----------------------------------------------------------------|
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c |****************************************************************| ( 2/999) NodeCount: 1178
0.40/0.40	c |----------------------------------------------------------------|
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c |****************************************************************| ( 3/999) NodeCount: 4218
1.59/1.64	c |----------------------------------------------------------------|
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c |****************************************************************| ( 4/999) NodeCount: 10384
4.49/4.57	c |----------------------------------------------------------------|
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c |****************************************************************| ( 5/999) NodeCount: 18464
8.89/8.91	c |----------------------------------------------------------------|
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c |****************************************************************| ( 6/999) NodeCount: 25528
13.09/13.12	c |----------------------------------------------------------------|
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c |****************************************************************| ( 7/999) NodeCount: 29791
15.79/15.80	c |----------------------------------------------------------------|
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c |****************************************************************| ( 8/999) NodeCount: 31528
16.89/16.94	c |----------------------------------------------------------------|
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c |****************************************************************| ( 9/999) NodeCount: 31951
17.19/17.24	c |----------------------------------------------------------------|
c |*
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c |****************************************************************| (10/999) NodeCount: 32005
17.19/17.28	c |----------------------------------------------------------------|
c |*
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c |****************************************************************| (11/999) NodeCount: 32011
17.19/17.29	c |----------------------------------------------------------------|
c |
17.19/17.29	c
17.19/17.29	c main():: nodeCount: 32011
17.19/17.29	c main():: dead ends in main: 774
17.19/17.29	c main():: lookAheadCount: 2393858
17.19/17.29	c main():: unitResolveCount: 547559
17.19/17.29	c main():: time=17.280000
17.19/17.29	c main():: necessary_assignments: 7819
17.19/17.29	c main():: bin_sat: 0, bin_unsat 0
17.19/17.29	c main():: doublelook: #: 130092, succes #: 94969
17.19/17.29	c main():: doublelook: overall 5.611 of all possible doublelooks executed
17.19/17.29	c main():: doublelook: succesrate: 73.001, average DL_trigger: 47.057
17.19/17.29	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-1517990-1238293667/watcher-1517990-1238293667 -o /tmp/evaluation-result-1517990-1238293667/solver-1517990-1238293667 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/march_nn HOME/instance-1517990-1238293667.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: 1.02 1.15 1.08 3/64 3107
/proc/meminfo: memFree=1215456/2055920 swapFree=4178784/4192956
[pid=3107] ppid=3105 vsize=972 CPUtime=0
/proc/3107/stat : 3107 (march_nn) R 3105 3107 32159 0 -1 4194304 135 0 0 0 0 0 0 0 18 0 1 0 1102028532 995328 118 1992294400 134512640 135197250 4294956240 18446744073709551615 134535888 0 0 4096 0 0 0 0 17 1 0 0
/proc/3107/statm: 243 118 67 167 0 74 0

[startup+0.0988989 s]
/proc/loadavg: 1.02 1.15 1.08 3/64 3107
/proc/meminfo: memFree=1215456/2055920 swapFree=4178784/4192956
[pid=3107] ppid=3105 vsize=1508 CPUtime=0.09
/proc/3107/stat : 3107 (march_nn) R 3105 3107 32159 0 -1 4194304 243 0 0 0 9 0 0 0 18 0 1 0 1102028532 1544192 226 1992294400 134512640 135197250 4294956240 18446744073709551615 134539276 0 0 4096 0 0 0 0 17 1 0 0
/proc/3107/statm: 377 226 93 167 0 208 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 1508

[startup+0.101899 s]
/proc/loadavg: 1.02 1.15 1.08 3/64 3107
/proc/meminfo: memFree=1215456/2055920 swapFree=4178784/4192956
[pid=3107] ppid=3105 vsize=1508 CPUtime=0.1
/proc/3107/stat : 3107 (march_nn) R 3105 3107 32159 0 -1 4194304 244 0 0 0 10 0 0 0 18 0 1 0 1102028532 1544192 227 1992294400 134512640 135197250 4294956240 18446744073709551615 134593923 0 0 4096 0 0 0 0 17 1 0 0
/proc/3107/statm: 377 227 93 167 0 208 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 1508

[startup+0.30196 s]
/proc/loadavg: 1.02 1.15 1.08 3/64 3107
/proc/meminfo: memFree=1215456/2055920 swapFree=4178784/4192956
[pid=3107] ppid=3105 vsize=1508 CPUtime=0.3
/proc/3107/stat : 3107 (march_nn) R 3105 3107 32159 0 -1 4194304 258 0 0 0 30 0 0 0 19 0 1 0 1102028532 1544192 241 1992294400 134512640 135197250 4294956240 18446744073709551615 134542433 0 0 4096 0 0 0 0 17 1 0 0
/proc/3107/statm: 377 241 93 167 0 208 0
Current children cumulated CPU time (s) 0.3
Current children cumulated vsize (KiB) 1508

[startup+0.701951 s]
/proc/loadavg: 1.02 1.15 1.08 3/64 3107
/proc/meminfo: memFree=1215456/2055920 swapFree=4178784/4192956
[pid=3107] ppid=3105 vsize=1640 CPUtime=0.7
/proc/3107/stat : 3107 (march_nn) R 3105 3107 32159 0 -1 4194304 275 0 0 0 70 0 0 0 22 0 1 0 1102028532 1679360 258 1992294400 134512640 135197250 4294956240 18446744073709551615 134525420 0 0 4096 0 0 0 0 17 1 0 0
/proc/3107/statm: 410 258 93 167 0 241 0
Current children cumulated CPU time (s) 0.7
Current children cumulated vsize (KiB) 1640

[startup+1.50202 s]
/proc/loadavg: 1.02 1.15 1.08 2/65 3108
/proc/meminfo: memFree=1214680/2055920 swapFree=4178784/4192956
[pid=3107] ppid=3105 vsize=1808 CPUtime=1.5
/proc/3107/stat : 3107 (march_nn) R 3105 3107 32159 0 -1 4194304 303 0 0 0 150 0 0 0 25 0 1 0 1102028532 1851392 286 1992294400 134512640 135197250 4294956240 18446744073709551615 134525333 0 0 4096 0 0 0 0 17 1 0 0
/proc/3107/statm: 452 286 93 167 0 283 0
Current children cumulated CPU time (s) 1.5
Current children cumulated vsize (KiB) 1808

[startup+3.10216 s]
/proc/loadavg: 1.02 1.15 1.08 2/65 3108
/proc/meminfo: memFree=1214488/2055920 swapFree=4178784/4192956
[pid=3107] ppid=3105 vsize=2000 CPUtime=3.1
/proc/3107/stat : 3107 (march_nn) R 3105 3107 32159 0 -1 4194304 337 0 0 0 310 0 0 0 25 0 1 0 1102028532 2048000 320 1992294400 134512640 135197250 4294956240 18446744073709551615 134542104 0 0 4096 0 0 0 0 17 1 0 0
/proc/3107/statm: 500 320 93 167 0 331 0
Current children cumulated CPU time (s) 3.1
Current children cumulated vsize (KiB) 2000

[startup+6.30151 s]
/proc/loadavg: 1.01 1.15 1.08 2/65 3108
/proc/meminfo: memFree=1213984/2055920 swapFree=4178784/4192956
[pid=3107] ppid=3105 vsize=2456 CPUtime=6.29
/proc/3107/stat : 3107 (march_nn) R 3105 3107 32159 0 -1 4194304 434 0 0 0 629 0 0 0 25 0 1 0 1102028532 2514944 417 1992294400 134512640 135197250 4294956240 18446744073709551615 134590485 0 0 4096 0 0 0 0 17 1 0 0
/proc/3107/statm: 614 417 93 167 0 445 0
Current children cumulated CPU time (s) 6.29
Current children cumulated vsize (KiB) 2456

[startup+12.702 s]
/proc/loadavg: 1.01 1.15 1.08 2/65 3108
/proc/meminfo: memFree=1213480/2055920 swapFree=4178784/4192956
[pid=3107] ppid=3105 vsize=2732 CPUtime=12.69
/proc/3107/stat : 3107 (march_nn) R 3105 3107 32159 0 -1 4194304 560 0 0 0 1269 0 0 0 25 0 1 0 1102028532 2797568 486 1992294400 134512640 135197250 4294956240 18446744073709551615 134593993 0 0 4096 0 0 0 0 17 1 0 0
/proc/3107/statm: 683 486 93 167 0 514 0
Current children cumulated CPU time (s) 12.69
Current children cumulated vsize (KiB) 2732

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

[startup+14.3051 s]
/proc/loadavg: 1.01 1.14 1.08 2/65 3108
/proc/meminfo: memFree=1213480/2055920 swapFree=4178784/4192956
[pid=3107] ppid=3105 vsize=2732 CPUtime=14.29
/proc/3107/stat : 3107 (march_nn) R 3105 3107 32159 0 -1 4194304 582 0 0 0 1429 0 0 0 25 0 1 0 1102028532 2797568 508 1992294400 134512640 135197250 4294956240 18446744073709551615 134552514 0 0 4096 0 0 0 0 17 1 0 0
/proc/3107/statm: 683 508 93 167 0 514 0
Current children cumulated CPU time (s) 14.29
Current children cumulated vsize (KiB) 2732

[startup+15.9013 s]
/proc/loadavg: 1.01 1.14 1.08 2/65 3108
/proc/meminfo: memFree=1213480/2055920 swapFree=4178784/4192956
[pid=3107] ppid=3105 vsize=3072 CPUtime=15.89
/proc/3107/stat : 3107 (march_nn) R 3105 3107 32159 0 -1 4194304 600 0 0 0 1589 0 0 0 25 0 1 0 1102028532 3145728 526 1992294400 134512640 135197250 4294956240 18446744073709551615 134525348 0 0 4096 0 0 0 0 17 1 0 0
/proc/3107/statm: 768 526 93 167 0 599 0
Current children cumulated CPU time (s) 15.89
Current children cumulated vsize (KiB) 3072

[startup+16.7013 s]
/proc/loadavg: 1.01 1.14 1.08 2/65 3108
/proc/meminfo: memFree=1213416/2055920 swapFree=4178784/4192956
[pid=3107] ppid=3105 vsize=3072 CPUtime=16.69
/proc/3107/stat : 3107 (march_nn) R 3105 3107 32159 0 -1 4194304 611 0 0 0 1669 0 0 0 25 0 1 0 1102028532 3145728 537 1992294400 134512640 135197250 4294956240 18446744073709551615 134539243 0 0 4096 0 0 0 0 17 1 0 0
/proc/3107/statm: 768 537 93 167 0 599 0
Current children cumulated CPU time (s) 16.69
Current children cumulated vsize (KiB) 3072

[startup+17.1014 s]
/proc/loadavg: 1.01 1.14 1.08 2/65 3108
/proc/meminfo: memFree=1213416/2055920 swapFree=4178784/4192956
[pid=3107] ppid=3105 vsize=3072 CPUtime=17.09
/proc/3107/stat : 3107 (march_nn) R 3105 3107 32159 0 -1 4194304 615 0 0 0 1709 0 0 0 25 0 1 0 1102028532 3145728 541 1992294400 134512640 135197250 4294956240 18446744073709551615 134525258 0 0 4096 0 0 0 0 17 1 0 0
/proc/3107/statm: 768 541 93 167 0 599 0
Current children cumulated CPU time (s) 17.09
Current children cumulated vsize (KiB) 3072

[startup+17.2014 s]
/proc/loadavg: 1.01 1.14 1.08 2/65 3108
/proc/meminfo: memFree=1213416/2055920 swapFree=4178784/4192956
[pid=3107] ppid=3105 vsize=3072 CPUtime=17.19
/proc/3107/stat : 3107 (march_nn) R 3105 3107 32159 0 -1 4194304 616 0 0 0 1719 0 0 0 25 0 1 0 1102028532 3145728 542 1992294400 134512640 135197250 4294956240 18446744073709551615 134525315 0 0 4096 0 0 0 0 17 1 0 0
/proc/3107/statm: 768 542 93 167 0 599 0
Current children cumulated CPU time (s) 17.19
Current children cumulated vsize (KiB) 3072

Child status: 20
Real time (s): 17.2915
CPU time (s): 17.2864
CPU user time (s): 17.2824
CPU system time (s): 0.003999
CPU usage (%): 99.9702
Max. virtual memory (cumulated for all children) (KiB): 3072

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 17.2824
system time used= 0.003999
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 0.019996 second user time and 0.049992 second system time

The end

Launcher Data 

Begin job on node57 at 2009-03-29 04:27:47
IDJOB=1517990
IDBENCH=70642
IDSOLVER=522
FILE ID=node57/1517990-1238293667
PBS_JOBID= 9061000
Free space on /tmp= 66264 MiB

SOLVER NAME= march_nn nn
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/UNKNOWN/360/unif-k3-r4.25-v360-c1530-S23373420-028.cnf
COMMAND LINE= HOME/march_nn BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1517990-1238293667/watcher-1517990-1238293667 -o /tmp/evaluation-result-1517990-1238293667/solver-1517990-1238293667 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/march_nn HOME/instance-1517990-1238293667.cnf

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

MD5SUM BENCH= c80ac2513e7d4a317f260e6d71a9bb08
RANDOM SEED=1422801880

node57.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		: 3000.213
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		: 3000.213
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:       1215872 kB
Buffers:         93988 kB
Cached:         653964 kB
SwapCached:       8004 kB
Active:         354660 kB
Inactive:       402804 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1215872 kB
SwapTotal:     4192956 kB
SwapFree:      4178784 kB
Dirty:             800 kB
Writeback:           0 kB
Mapped:          15100 kB
Slab:            68664 kB
Committed_AS:  2509164 kB
PageTables:       1392 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= 66264 MiB
End job on node57 at 2009-03-29 04:28:04