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-pilot4.opb
MD5SUM51b37b22b0e13f30b25801aa060ca6d7
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 -3498116692108640256
Number of bits of the biggest number in a constraint 64
Biggest sum of numbers in a constraint 99417465468392882176
Number of bits of the biggest sum of numbers67
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark14.1818
Number of variables26494
Total number of constraints657
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 constraints657
Minimum length of a constraint10
Maximum length of a constraint1427

Trace number 9901

Launcher Data

LAUNCH ON wulflinc21 THE 2005-09-23 16:08:28 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=8651 boxname=wulflinc21 idbench=447 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  51b37b22b0e13f30b25801aa060ca6d7  /oldhome/oroussel/tmp/wulflinc21/normalized-mps-v2-20-10-pilot4.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc21/normalized-mps-v2-20-10-pilot4.opb
IDLAUNCH: 8651
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.188
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	: 3
cpu MHz		: 451.188
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	: 901.12

/proc/meminfo:
MemTotal:      1034660 kB
MemFree:        927508 kB
Buffers:         13576 kB
Cached:          75232 kB
SwapCached:          0 kB
Active:          48792 kB
Inactive:        42972 kB
HighTotal:      131008 kB
HighFree:        51408 kB
LowTotal:       903652 kB
LowFree:        876100 kB
SwapTotal:     2097892 kB
SwapFree:      2097892 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6980 kB
Slab:             9768 kB
Committed_AS:    63660 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-23 16:10:06 (client local time) WITH STATUS 1 IN 98.4 SECONDS
stats: 8651 7 98.4 1

Solver Data

c This solver internally uses Chaff 2004.11.15 Simplified

	Unexpected exception :
	St9bad_alloc

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/8987/stat): 8987 (pb2sat) R 8986 8987 4059 0 -1 0 18 0 0 0 0 0 0 0 23 0 1 0 21507633 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/8987/statm): 373 2 364 364 0 9 0
[pid=8987] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc21/normalized-mps-v2-20-10-pilot4.opb

[startup+10.0023 s]
Raw data (loadavg): 0.86 0.92 0.93 2/55 8987
Raw data (/proc/8987/stat): 8987 (pb2sat) R 8986 8987 4059 0 -1 0 31367 0 0 0 930 66 0 0 25 0 1 0 21507633 99622912 20200 4294967295 134512640 135987407 3221224560 3221054704 134537491 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8987/statm): 24322 20200 364 364 0 23958 0
[pid=8987] vsize: 97288
Current children cumulated CPU time (s) 9.96
Current children cumulated vsize (Kb) 97288

[startup+20.003 s]
Raw data (loadavg): 0.88 0.93 0.93 2/55 8987
Raw data (/proc/8987/stat): 8987 (pb2sat) R 8986 8987 4059 0 -1 0 62683 0 0 0 1864 128 0 0 25 0 1 0 21507633 197447680 40124 4294967295 134512640 135987407 3221224560 3221054668 134637002 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8987/statm): 48205 40124 364 364 0 47841 0
[pid=8987] vsize: 192820
Current children cumulated CPU time (s) 19.92
Current children cumulated vsize (Kb) 192820

[startup+30.0037 s]
Raw data (loadavg): 0.90 0.93 0.93 2/55 8987
Raw data (/proc/8987/stat): 8987 (pb2sat) R 8986 8987 4059 0 -1 0 106341 0 0 0 2773 217 0 0 25 0 1 0 21507633 331390976 60762 4294967295 134512640 135987407 3221224560 3221055340 134636977 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8987/statm): 80906 60762 364 364 0 80542 0
[pid=8987] vsize: 323624
Current children cumulated CPU time (s) 29.9
Current children cumulated vsize (Kb) 323624

[startup+40.0034 s]
Raw data (loadavg): 0.91 0.93 0.93 2/55 8987
Raw data (/proc/8987/stat): 8987 (pb2sat) R 8986 8987 4059 0 -1 0 124776 0 0 0 3735 252 0 0 25 0 1 0 21507633 391593984 78902 4294967295 134512640 135987407 3221224560 3221055280 134878574 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8987/statm): 95604 78902 364 364 0 95240 0
[pid=8987] vsize: 382416
Current children cumulated CPU time (s) 39.87
Current children cumulated vsize (Kb) 382416

[startup+50.0041 s]
Raw data (loadavg): 0.92 0.93 0.93 2/55 8987
Raw data (/proc/8987/stat): 8987 (pb2sat) R 8986 8987 4059 0 -1 0 169850 0 0 0 4644 337 0 0 25 0 1 0 21507633 533868544 102801 4294967295 134512640 135987407 3221224560 3221055376 134537491 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8987/statm): 130339 102801 364 364 0 129975 0
[pid=8987] vsize: 521356
Current children cumulated CPU time (s) 49.81
Current children cumulated vsize (Kb) 521356

[startup+60.0039 s]
Raw data (loadavg): 0.94 0.93 0.93 2/55 8987
Raw data (/proc/8987/stat): 8987 (pb2sat) R 8986 8987 4059 0 -1 0 211311 0 0 0 5559 422 0 0 25 0 1 0 21507633 658591744 119462 4294967295 134512640 135987407 3221224560 3221056712 135544177 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8987/statm): 160789 119462 364 364 0 160425 0
[pid=8987] vsize: 643156
Current children cumulated CPU time (s) 59.81
Current children cumulated vsize (Kb) 643156

[startup+70.0214 s]
Raw data (loadavg): 0.94 0.94 0.93 2/55 8987
Raw data (/proc/8987/stat): 8987 (pb2sat) R 8986 8987 4059 0 -1 0 229672 0 0 0 6523 457 0 0 25 0 1 0 21507633 718368768 137583 4294967295 134512640 135987407 3221224560 3221055520 134877638 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8987/statm): 175383 137583 364 364 0 175019 0
[pid=8987] vsize: 701532
Current children cumulated CPU time (s) 69.8
Current children cumulated vsize (Kb) 701532

[startup+80.0221 s]
Raw data (loadavg): 0.95 0.94 0.93 2/55 8987
Raw data (/proc/8987/stat): 8987 (pb2sat) R 8986 8987 4059 0 -1 0 246835 0 0 0 7486 492 0 0 25 0 1 0 21507633 742969344 154523 4294967295 134512640 135987407 3221224560 3221055676 134637002 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8987/statm): 181389 154523 364 364 0 181025 0
[pid=8987] vsize: 725556
Current children cumulated CPU time (s) 79.78
Current children cumulated vsize (Kb) 725556

[startup+90.0218 s]
Raw data (loadavg): 0.96 0.94 0.93 2/55 8987
Raw data (/proc/8987/stat): 8987 (pb2sat) R 8986 8987 4059 0 -1 0 267009 0 0 0 8442 533 0 0 25 0 1 0 21507633 774733824 174019 4294967295 134512640 135987407 3221224560 3221054188 134892392 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8987/statm): 189144 174019 364 364 0 188780 0
[pid=8987] vsize: 756576
Current children cumulated CPU time (s) 89.75
Current children cumulated vsize (Kb) 756576
One traced child (pid=8987) exited with status: 1
All traced children have exited ! Game is over.

Child status: 1
Real time (s): 98.6715
CPU time (s): 98.4
CPU user time (s): 92.6649
CPU system time (s): 5.73513
CPU usage (%): 99.7248
Max. virtual memory (cumulated for all children) (Kb): 756576

Verifier Data

ERROR: no interpretation found !