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-v2-13-7/MIPLIB/miplib3/normalized-mps-v2-13-7-khb05250.opb
MD5SUM56abcf5cc503d1b433b55ef9ec07fc76
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 25004
Biggest coefficient in the objective function 6104809472
Number of bits for the biggest coefficient in the objective function 33
Sum of the numbers in the objective function 5527422840150
Number of bits of the sum of numbers in the objective function 43
Biggest number in a constraint 6104809472
Number of bits of the biggest number in a constraint 33
Biggest sum of numbers in a constraint 5527422840150
Number of bits of the biggest sum of numbers43
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.284955
Number of variables25544
Total number of constraints126
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)24
Number of constraints which are nor clauses,nor cardinality constraints102
Minimum length of a constraint1
Maximum length of a constraint1020

Trace number 6680

Launcher Data

LAUNCH ON wulflinc10 THE 2005-09-20 09:01:41 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=4573 boxname=wulflinc10 idbench=1057 idsolver=4 numberseed=0
MD5SUM SOLVER: 21c3ffd7205c96d5f0784fd273b92938  /oldhome/oroussel/solvers/PBS4
MD5SUM BENCH:  56abcf5cc503d1b433b55ef9ec07fc76  /oldhome/oroussel/tmp/wulflinc10/normalized-mps-v2-13-7-khb05250.opb
REAL COMMAND:  PBS4 /oldhome/oroussel/tmp/wulflinc10/normalized-mps-v2-13-7-khb05250.opb
IDLAUNCH: 4573
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 450.999
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	: 890.88

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 450.999
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:        755996 kB
Buffers:         38744 kB
Cached:         212152 kB
SwapCached:        228 kB
Active:          86140 kB
Inactive:       167736 kB
HighTotal:      131008 kB
HighFree:         3752 kB
LowTotal:       903652 kB
LowFree:        752244 kB
SwapTotal:     2097136 kB
SwapFree:      2096756 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6280 kB
Slab:            19136 kB
Committed_AS:    64164 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-20 09:02:24 (client local time) WITH STATUS 20 IN 43.4254 SECONDS
stats: 4573 7 43.4254 20

Solver Data

c PBS v4 by Bashar Al-Rawi & Fadi Aloul
c Solving /oldhome/oroussel/tmp/wulflinc10/normalized-mps-v2-13-7-khb05250.opb ......
s UNSATISFIABLE
c Done, CPU Time=0.049993

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/16415/stat): 16415 (PBS4) R 16414 16415 22582 0 -1 0 18 0 0 0 0 0 0 0 22 0 1 0 1799106791 978944 2 4294967295 134512640 135450776 3221224560 3221224560 134512960 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/16415/statm): 239 2 232 232 0 7 0
[pid=16415] vsize: 956
open syscall for file /dev/null
open syscall for file /oldhome/oroussel/tmp/wulflinc10/normalized-mps-v2-13-7-khb05250.opb
open syscall for file /oldhome/oroussel/tmp/wulflinc10/normalized-mps-v2-13-7-khb05250.opb

[startup+10.0024 s]
Raw data (loadavg): 0.92 1.00 0.96 2/56 16415
Raw data (/proc/16415/stat): 16415 (PBS4) R 16414 16415 22582 0 -1 0 1487 0 0 0 995 4 0 0 25 0 1 0 1799106791 7045120 1437 4294967295 134512640 135450776 3221224560 3221223072 134599343 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/16415/statm): 1720 1437 232 232 0 1488 0
[pid=16415] vsize: 6880
Current children cumulated CPU time (s) 9.99
Current children cumulated vsize (Kb) 6880

[startup+20.0029 s]
Raw data (loadavg): 0.93 1.00 0.96 2/56 16415
Raw data (/proc/16415/stat): 16415 (PBS4) R 16414 16415 22582 0 -1 0 1585 0 0 0 1994 4 0 0 25 0 1 0 1799106791 7446528 1535 4294967295 134512640 135450776 3221224560 3221223072 134600507 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/16415/statm): 1818 1535 232 232 0 1586 0
[pid=16415] vsize: 7272
Current children cumulated CPU time (s) 19.98
Current children cumulated vsize (Kb) 7272

[startup+30.0025 s]
Raw data (loadavg): 0.94 1.00 0.96 2/56 16415
Raw data (/proc/16415/stat): 16415 (PBS4) R 16414 16415 22582 0 -1 0 1585 0 0 0 2995 4 0 0 25 0 1 0 1799106791 7446528 1535 4294967295 134512640 135450776 3221224560 3221223072 134600456 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/16415/statm): 1818 1535 232 232 0 1586 0
[pid=16415] vsize: 7272
Current children cumulated CPU time (s) 29.99
Current children cumulated vsize (Kb) 7272

[startup+40.0021 s]
Raw data (loadavg): 0.95 1.00 0.96 2/56 16415
Raw data (/proc/16415/stat): 16415 (PBS4) R 16414 16415 22582 0 -1 0 2261 0 0 0 3993 6 0 0 25 0 1 0 1799106791 7655424 1623 4294967295 134512640 135450776 3221224560 3221223036 135084764 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/16415/statm): 1869 1623 232 232 0 1637 0
[pid=16415] vsize: 7476
Current children cumulated CPU time (s) 39.99
Current children cumulated vsize (Kb) 7476
One traced child (pid=16415) exited with status: 20
All traced children have exited ! Game is over.

Child status: 20
Real time (s): 43.4499
CPU time (s): 43.4254
CPU user time (s): 43.3094
CPU system time (s): 0.115982
CPU usage (%): 99.9435
Max. virtual memory (cumulated for all children) (Kb): 7476

Verifier Data

ERROR: no interpretation found !