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 in four parts:
  1. 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 provide some useful information on the computer.
  2. 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 !
  3. 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 1200 seconds. 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 1230 seconds which will send a SIGXPU to the solver. The last limit is on the virtual memory used by the process (900Mb).
    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.
  4. 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.

General information on the benchmark

Namemps-v2-20-10/ftp.netlib.org/lp/data/normalized-mps-v2-20-10-woodw.opb
MD5SUM5d2b367438a64c72c01ca61f03388807
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
SatisfiableNO
(Un)Satisfiability was proved
Best value of the objective function
Optimality of the best value was proved
Number of terms in the objective function 120
Biggest coefficient in the objective function 536870912
Number of bits for the biggest coefficient in the objective function 30
Sum of the numbers in the objective function 4294967292
Number of bits of the sum of numbers in the objective function 32
Biggest number in a constraint 10737418240000
Number of bits of the biggest number in a constraint 44
Biggest sum of numbers in a constraint 556588032595749
Number of bits of the biggest sum of numbers49
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark71.6581
Number of variables252150
Total number of constraints1098
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)0
Number of constraints which are nor clauses,nor cardinality constraints1098
Minimum length of a constraint30
Maximum length of a constraint43590

Trace number 2647

Launcher Data

LAUNCH ON wulflinc9 THE 2005-09-18 20:38:51 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=2829 boxname=wulflinc9 idbench=485 idsolver=3 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  5d2b367438a64c72c01ca61f03388807  /oldhome/oroussel/tmp/wulflinc9/normalized-mps-v2-20-10-woodw.opb
REAL COMMAND:  minisat+_script /oldhome/oroussel/tmp/wulflinc9/normalized-mps-v2-20-10-woodw.opb
IDLAUNCH: 2829
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.242
cache size	: 512 KB
fdiv_bug	: no
hlt_bug		: no
f00f_bug	: no
coma_bug	: no
fpu		: yes
fpu_exception	: yes
cpuid level	: 2
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse
bogomips	: 888.83

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.242
cache size	: 512 KB
fdiv_bug	: no
hlt_bug		: no
f00f_bug	: no
coma_bug	: no
fpu		: yes
fpu_exception	: yes
cpuid level	: 2
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse
bogomips	: 899.07

/proc/meminfo:
MemTotal:      1034660 kB
MemFree:        884228 kB
Buffers:         30756 kB
Cached:          92776 kB
SwapCached:       1044 kB
Active:          79548 kB
Inactive:        46688 kB
HighTotal:      131008 kB
HighFree:        34636 kB
LowTotal:       903652 kB
LowFree:        849592 kB
SwapTotal:     2097136 kB
SwapFree:      2095568 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5660 kB
Slab:            18268 kB
Committed_AS:    64168 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-18 20:40:05 (client local time) WITH STATUS 20 IN 71.6581 SECONDS
stats: 2829 7 71.6581 20

Solver Data

c Parsing PB file...
c Converting 1647 PB-constraints to clauses...
c   -- Unit propagations: ppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppp  -- Detecting intervals from adjacent constraints: ##########################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################
c   -- Clauses(.)/Splits(s): s
s UNSATISFIABLE
c _______________________________________________________________________________
c 
c restarts              : 0
c conflicts             : 0              (0 /sec)
c decisions             : 0              (0 /sec)
c propagations          : 0              (0 /sec)
c inspects              : 0              (0 /sec)
c CPU time              : 69.8594 s
c _______________________________________________________________________________

Watcher Data

Enforcing CPU limit (will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime (will send SIGXCPU) limit: 1230 seconds
Enforcing Stack size limit: 67108864 bytes
Enforcing memory limit (will send SIGTERM then SIGKILL): 921600 Kb
Enforcing VSIZE limit: 994918400 bytes
Current StackSize limit: 67108864 bytes
Raw data (/proc/9696/stat): 9696 (minisat+_script) R 9695 9696 30740 0 -1 0 19 0 0 0 0 0 0 0 23 0 1 0 1785971599 712704 3 4294967295 134512640 135087896 3221224512 3221224512 1073744960 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/9696/statm): 174 3 169 147 0 27 0
[pid=9696] vsize: 696
open syscall for file /etc/ld.so.preload
open syscall for file tls/i686/mmx/libtermcap.so.2
open syscall for file tls/i686/libtermcap.so.2
open syscall for file tls/mmx/libtermcap.so.2
open syscall for file tls/libtermcap.so.2
open syscall for file i686/mmx/libtermcap.so.2
open syscall for file i686/libtermcap.so.2
open syscall for file mmx/libtermcap.so.2
open syscall for file libtermcap.so.2
open syscall for file /oldhome/oroussel/lib/tls/i686/mmx/libtermcap.so.2
open syscall for file /oldhome/oroussel/lib/tls/i686/libtermcap.so.2
open syscall for file /oldhome/oroussel/lib/tls/mmx/libtermcap.so.2
open syscall for file /oldhome/oroussel/lib/tls/libtermcap.so.2
open syscall for file /oldhome/oroussel/lib/i686/mmx/libtermcap.so.2
open syscall for file /oldhome/oroussel/lib/i686/libtermcap.so.2
open syscall for file /oldhome/oroussel/lib/mmx/libtermcap.so.2
open syscall for file /oldhome/oroussel/lib/libtermcap.so.2
open syscall for file /etc/ld.so.cache
open syscall for file /lib/libtermcap.so.2
open syscall for file tls/i686/mmx/libdl.so.2
open syscall for file tls/i686/libdl.so.2
open syscall for file tls/mmx/libdl.so.2
open syscall for file tls/libdl.so.2
open syscall for file i686/mmx/libdl.so.2
open syscall for file i686/libdl.so.2
open syscall for file mmx/libdl.so.2
open syscall for file libdl.so.2
open syscall for file /oldhome/oroussel/lib/libdl.so.2
open syscall for file /lib/libdl.so.2
open syscall for file tls/i686/mmx/libc.so.6
open syscall for file tls/i686/libc.so.6
open syscall for file tls/mmx/libc.so.6
open syscall for file tls/libc.so.6
open syscall for file i686/mmx/libc.so.6
open syscall for file i686/libc.so.6
open syscall for file mmx/libc.so.6
open syscall for file libc.so.6
open syscall for file /oldhome/oroussel/lib/libc.so.6
open syscall for file /lib/tls/libc.so.6
open syscall for file /dev/tty
open syscall for file /etc/mtab
open syscall for file /proc/meminfo
open syscall for file /oldhome/oroussel/solvers/minisat+_script
New process pid=9697
New process pid=9698
New process pid=9699
execve syscall for /bin/sed executable
One traced child (pid=9698) exited with status: 0
open syscall for file /etc/ld.so.preload
open syscall for file tls/i686/mmx/libc.so.6
open syscall for file tls/i686/libc.so.6
open syscall for file tls/mmx/libc.so.6
open syscall for file tls/libc.so.6
open syscall for file i686/mmx/libc.so.6
open syscall for file i686/libc.so.6
open syscall for file mmx/libc.so.6
open syscall for file libc.so.6
open syscall for file /oldhome/oroussel/lib/tls/i686/mmx/libc.so.6
open syscall for file /oldhome/oroussel/lib/tls/i686/libc.so.6
open syscall for file /oldhome/oroussel/lib/tls/mmx/libc.so.6
open syscall for file /oldhome/oroussel/lib/tls/libc.so.6
open syscall for file /oldhome/oroussel/lib/i686/mmx/libc.so.6
open syscall for file /oldhome/oroussel/lib/i686/libc.so.6
open syscall for file /oldhome/oroussel/lib/mmx/libc.so.6
open syscall for file /oldhome/oroussel/lib/libc.so.6
open syscall for file /etc/ld.so.cache
open syscall for file /lib/tls/libc.so.6
One traced child (pid=9699) exited with status: 0
One traced child (pid=9697) exited with status: 0
New process pid=9700
execve syscall for /oldhome/oroussel/solvers/minisat+_64-bit_static executable
open syscall for file /dev/null
open syscall for file /oldhome/oroussel/tmp/wulflinc9/normalized-mps-v2-20-10-woodw.opb

[startup+10.0039 s]
Raw data (loadavg): 0.93 0.95 0.91 2/57 9700
Raw data (/proc/9696/stat): 9696 (minisat+_script) S 9695 9696 30740 0 -1 0 289 239 0 0 0 0 0 1 18 0 1 0 1785971599 2174976 226 4294967295 134512640 135087896 3221224512 3221223784 1074634510 0 65536 5 65538 3222414538 0 0 17 0 0 0
Raw data (/proc/9696/statm): 531 226 485 147 0 384 0
[pid=9696] vsize: 2124
Raw data (/proc/9700/stat): 9700 (minisat+_64-bit) R 9696 9696 30740 0 -1 0 25239 0 0 0 809 101 0 0 25 0 1 0 1785971604 89051136 16285 4294967295 134512640 135094434 3221224432 3221223328 134576211 0 0 5 16386 0 0 0 17 1 0 0
Raw data (/proc/9700/statm): 21741 16285 145 145 0 21596 0
[pid=9700] vsize: 86964
Current children cumulated CPU time (s) 9.11
Current children cumulated vsize (Kb) 89088

[startup+20.0047 s]
Raw data (loadavg): 0.94 0.95 0.91 2/57 9700
Raw data (/proc/9696/stat): 9696 (minisat+_script) S 9695 9696 30740 0 -1 0 289 239 0 0 0 0 0 1 18 0 1 0 1785971599 2174976 226 4294967295 134512640 135087896 3221224512 3221223784 1074634510 0 65536 5 65538 3222414538 0 0 17 0 0 0
Raw data (/proc/9696/statm): 531 226 485 147 0 384 0
[pid=9696] vsize: 2124
Raw data (/proc/9700/stat): 9700 (minisat+_64-bit) R 9696 9696 30740 0 -1 0 44218 0 0 0 1670 172 0 0 25 0 1 0 1785971604 140066816 25239 4294967295 134512640 135094434 3221224432 3221223248 134581225 0 0 5 16386 0 0 0 17 0 0 0
Raw data (/proc/9700/statm): 34196 25239 145 145 0 34051 0
[pid=9700] vsize: 136784
Current children cumulated CPU time (s) 18.43
Current children cumulated vsize (Kb) 138908

[startup+30.0045 s]
Raw data (loadavg): 0.95 0.95 0.91 2/57 9700
Raw data (/proc/9696/stat): 9696 (minisat+_script) S 9695 9696 30740 0 -1 0 289 239 0 0 0 0 0 1 18 0 1 0 1785971599 2174976 226 4294967295 134512640 135087896 3221224512 3221223784 1074634510 0 65536 5 65538 3222414538 0 0 17 0 0 0
Raw data (/proc/9696/statm): 531 226 485 147 0 384 0
[pid=9696] vsize: 2124
Raw data (/proc/9700/stat): 9700 (minisat+_64-bit) R 9696 9696 30740 0 -1 0 44240 0 0 0 2670 172 0 0 25 0 1 0 1785971604 140075008 25261 4294967295 134512640 135094434 3221224432 3221223248 134580075 0 0 5 16386 0 0 0 17 0 0 0
Raw data (/proc/9700/statm): 34198 25261 145 145 0 34053 0
[pid=9700] vsize: 136792
Current children cumulated CPU time (s) 28.43
Current children cumulated vsize (Kb) 138916

[startup+40.0052 s]
Raw data (loadavg): 0.96 0.95 0.91 2/57 9700
Raw data (/proc/9696/stat): 9696 (minisat+_script) S 9695 9696 30740 0 -1 0 289 239 0 0 0 0 0 1 18 0 1 0 1785971599 2174976 226 4294967295 134512640 135087896 3221224512 3221223784 1074634510 0 65536 5 65538 3222414538 0 0 17 0 0 0
Raw data (/proc/9696/statm): 531 226 485 147 0 384 0
[pid=9696] vsize: 2124
Raw data (/proc/9700/stat): 9700 (minisat+_64-bit) R 9696 9696 30740 0 -1 0 44240 0 0 0 3670 172 0 0 25 0 1 0 1785971604 140075008 25261 4294967295 134512640 135094434 3221224432 3221223248 134581225 0 0 5 16386 0 0 0 17 0 0 0
Raw data (/proc/9700/statm): 34198 25261 145 145 0 34053 0
[pid=9700] vsize: 136792
Current children cumulated CPU time (s) 38.43
Current children cumulated vsize (Kb) 138916

[startup+50.006 s]
Raw data (loadavg): 0.96 0.95 0.91 2/57 9700
Raw data (/proc/9696/stat): 9696 (minisat+_script) S 9695 9696 30740 0 -1 0 289 239 0 0 0 0 0 1 18 0 1 0 1785971599 2174976 226 4294967295 134512640 135087896 3221224512 3221223784 1074634510 0 65536 5 65538 3222414538 0 0 17 0 0 0
Raw data (/proc/9696/statm): 531 226 485 147 0 384 0
[pid=9696] vsize: 2124
Raw data (/proc/9700/stat): 9700 (minisat+_64-bit) R 9696 9696 30740 0 -1 0 44240 0 0 0 4670 172 0 0 25 0 1 0 1785971604 140075008 25261 4294967295 134512640 135094434 3221224432 3221223248 134580062 0 0 5 16386 0 0 0 17 0 0 0
Raw data (/proc/9700/statm): 34198 25261 145 145 0 34053 0
[pid=9700] vsize: 136792
Current children cumulated CPU time (s) 48.43
Current children cumulated vsize (Kb) 138916

[startup+60.0068 s]
Raw data (loadavg): 0.97 0.95 0.91 2/57 9700
Raw data (/proc/9696/stat): 9696 (minisat+_script) S 9695 9696 30740 0 -1 0 289 239 0 0 0 0 0 1 18 0 1 0 1785971599 2174976 226 4294967295 134512640 135087896 3221224512 3221223784 1074634510 0 65536 5 65538 3222414538 0 0 17 0 0 0
Raw data (/proc/9696/statm): 531 226 485 147 0 384 0
[pid=9696] vsize: 2124
Raw data (/proc/9700/stat): 9700 (minisat+_64-bit) R 9696 9696 30740 0 -1 0 44240 0 0 0 5671 172 0 0 25 0 1 0 1785971604 140075008 25261 4294967295 134512640 135094434 3221224432 3221223248 134581220 0 0 5 16386 0 0 0 17 0 0 0
Raw data (/proc/9700/statm): 34198 25261 145 145 0 34053 0
[pid=9700] vsize: 136792
Current children cumulated CPU time (s) 58.44
Current children cumulated vsize (Kb) 138916

[startup+70.0075 s]
Raw data (loadavg): 0.97 0.96 0.91 2/57 9700
Raw data (/proc/9696/stat): 9696 (minisat+_script) S 9695 9696 30740 0 -1 0 289 239 0 0 0 0 0 1 18 0 1 0 1785971599 2174976 226 4294967295 134512640 135087896 3221224512 3221223784 1074634510 0 65536 5 65538 3222414538 0 0 17 0 0 0
Raw data (/proc/9696/statm): 531 226 485 147 0 384 0
[pid=9696] vsize: 2124
Raw data (/proc/9700/stat): 9700 (minisat+_64-bit) R 9696 9696 30740 0 -1 0 44242 0 0 0 6671 172 0 0 25 0 1 0 1785971604 140075008 25263 4294967295 134512640 135094434 3221224432 3221223248 134580081 0 0 5 16386 0 0 0 17 0 0 0
Raw data (/proc/9700/statm): 34198 25263 145 145 0 34053 0
[pid=9700] vsize: 136792
Current children cumulated CPU time (s) 68.44
Current children cumulated vsize (Kb) 138916
One traced child (pid=9700) exited with status: 20
One traced child (pid=9696) exited with status: 20
All traced children have exited ! Game is over.

Child status: 20
Real time (s): 73.2107
CPU time (s): 71.6581
CPU user time (s): 69.8674
CPU system time (s): 1.79073
CPU usage (%): 97.8793
Max. virtual memory (cumulated for all children) (Kb): 138916

Verifier Data

ERROR: no interpretation found !