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-ganges.opb
MD5SUM8a1a45ee37d518ca6067f6e63fa8146f
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 2309
Biggest coefficient in the objective function 33554432
Number of bits for the biggest coefficient in the objective function 26
Sum of the numbers in the objective function 884998035
Number of bits of the sum of numbers in the objective function 30
Biggest number in a constraint 5368709120000
Number of bits of the biggest number in a constraint 43
Biggest sum of numbers in a constraint 32257203788492
Number of bits of the biggest sum of numbers45
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark2.01169
Number of variables46097
Total number of constraints1706
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 constraints1706
Minimum length of a constraint13
Maximum length of a constraint1432

Trace number 9885

Launcher Data

LAUNCH ON wulflinc3 THE 2005-09-23 16:06:25 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=8637 boxname=wulflinc3 idbench=433 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  8a1a45ee37d518ca6067f6e63fa8146f  /oldhome/oroussel/tmp/wulflinc3/normalized-mps-v2-20-10-ganges.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc3/normalized-mps-v2-20-10-ganges.opb
IDLAUNCH: 8637
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.228
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		: 451.228
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:        933964 kB
Buffers:         12744 kB
Cached:          70624 kB
SwapCached:          0 kB
Active:          47268 kB
Inactive:        39012 kB
HighTotal:      131008 kB
HighFree:        56112 kB
LowTotal:       903652 kB
LowFree:        877852 kB
SwapTotal:     2097136 kB
SwapFree:      2097136 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6980 kB
Slab:             8920 kB
Committed_AS:    63660 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-23 16:07:59 (client local time) WITH STATUS 0 IN 91.6601 SECONDS
stats: 8637 7 91.6601 0

Solver Data

c This solver internally uses Chaff 2004.11.15 Simplified
s UNKNOWN

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/8564/stat): 8564 (pb2sat) R 8563 8564 4060 0 -1 0 18 0 0 0 0 0 0 0 19 0 1 0 21514065 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/8564/statm): 373 2 364 364 0 9 0
[pid=8564] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc3/normalized-mps-v2-20-10-ganges.opb

[startup+10.0028 s]
Raw data (loadavg): 0.98 0.97 0.93 2/55 8564
Raw data (/proc/8564/stat): 8564 (pb2sat) R 8563 8564 4060 0 -1 0 27268 0 0 0 931 66 0 0 25 0 1 0 21514065 81268736 16105 4294967295 134512640 135987407 3221224560 3221221548 134669203 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8564/statm): 19841 16105 364 364 0 19477 0
[pid=8564] vsize: 79364
Current children cumulated CPU time (s) 9.97
Current children cumulated vsize (Kb) 79364

[startup+20.0037 s]
Raw data (loadavg): 0.98 0.97 0.93 2/55 8564
Raw data (/proc/8564/stat): 8564 (pb2sat) R 8563 8564 4060 0 -1 0 55207 0 0 0 1862 133 0 0 25 0 1 0 21514065 160333824 32789 4294967295 134512640 135987407 3221224560 3221208348 135484948 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8564/statm): 39144 32789 364 364 0 38780 0
[pid=8564] vsize: 156576
Current children cumulated CPU time (s) 19.95
Current children cumulated vsize (Kb) 156576

[startup+30.0045 s]
Raw data (loadavg): 0.99 0.97 0.93 2/55 8564
Raw data (/proc/8564/stat): 8564 (pb2sat) R 8563 8564 4060 0 -1 0 95607 0 0 0 2772 220 0 0 25 0 1 0 21514065 279371776 50955 4294967295 134512640 135987407 3221224560 3221210272 134537483 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8564/statm): 68206 50955 364 364 0 67842 0
[pid=8564] vsize: 272824
Current children cumulated CPU time (s) 29.92
Current children cumulated vsize (Kb) 272824

[startup+40.0054 s]
Raw data (loadavg): 0.99 0.97 0.93 2/55 8564
Raw data (/proc/8564/stat): 8564 (pb2sat) R 8563 8564 4060 0 -1 0 110848 0 0 0 3737 254 0 0 25 0 1 0 21514065 321187840 65934 4294967295 134512640 135987407 3221224560 3221205456 134861898 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8564/statm): 78415 65934 364 364 0 78051 0
[pid=8564] vsize: 313660
Current children cumulated CPU time (s) 39.91
Current children cumulated vsize (Kb) 313660

[startup+50.0062 s]
Raw data (loadavg): 0.99 0.97 0.93 2/55 8564
Raw data (/proc/8564/stat): 8564 (pb2sat) R 8563 8564 4060 0 -1 0 151726 0 0 0 4653 334 0 0 25 0 1 0 21514065 448323584 87186 4294967295 134512640 135987407 3221224560 3221207888 135479992 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8564/statm): 109454 87186 364 364 0 109090 0
[pid=8564] vsize: 437816
Current children cumulated CPU time (s) 49.87
Current children cumulated vsize (Kb) 437816

[startup+60.007 s]
Raw data (loadavg): 0.99 0.97 0.93 2/55 8564
Raw data (/proc/8564/stat): 8564 (pb2sat) R 8563 8564 4060 0 -1 0 188879 0 0 0 5570 417 0 0 25 0 1 0 21514065 553046016 99541 4294967295 134512640 135987407 3221224560 3221207632 134887887 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8564/statm): 135021 99541 364 364 0 134657 0
[pid=8564] vsize: 540084
Current children cumulated CPU time (s) 59.87
Current children cumulated vsize (Kb) 540084

[startup+70.0079 s]
Raw data (loadavg): 0.99 0.97 0.93 2/55 8564
Raw data (/proc/8564/stat): 8564 (pb2sat) R 8563 8564 4060 0 -1 0 201371 0 0 0 6545 442 0 0 25 0 1 0 21514065 590962688 111814 4294967295 134512640 135987407 3221224560 3221211456 134864189 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8564/statm): 144278 111814 364 364 0 143914 0
[pid=8564] vsize: 577112
Current children cumulated CPU time (s) 69.87
Current children cumulated vsize (Kb) 577112

[startup+80.0087 s]
Raw data (loadavg): 0.99 0.97 0.93 2/55 8564
Raw data (/proc/8564/stat): 8564 (pb2sat) R 8563 8564 4060 0 -1 0 216788 0 0 0 7511 476 0 0 25 0 1 0 21514065 596373504 126961 4294967295 134512640 135987407 3221224560 3221208396 135499903 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8564/statm): 145599 126961 364 364 0 145235 0
[pid=8564] vsize: 582396
Current children cumulated CPU time (s) 79.87
Current children cumulated vsize (Kb) 582396

[startup+90.0095 s]
Raw data (loadavg): 0.99 0.97 0.93 2/55 8564
Raw data (/proc/8564/stat): 8564 (pb2sat) R 8563 8564 4060 0 -1 0 247983 0 0 0 8442 543 0 0 25 0 1 0 21514065 917884928 157329 4294967295 134512640 135987407 3221224560 3221202320 134854999 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8564/statm): 224093 157329 364 364 0 223729 0
[pid=8564] vsize: 896372
Current children cumulated CPU time (s) 89.85
Current children cumulated vsize (Kb) 896372



Mem limit exceeded: sending SIGTERM then SIGKILL

[startup+91.4339 s]
Raw data (loadavg): 0.99 0.97 0.93 1/55 8564
Raw data (/proc/8564/stat): 8564 (pb2sat) T 8563 8564 4060 0 -1 0 264113 0 0 0 8552 572 0 0 25 0 1 0 21514065 943837184 172914 4294967295 134512640 135987407 3221224560 3221202092 135635874 0 0 5 16384 3222434794 0 0 17 0 0 0
Raw data (/proc/8564/statm): 230429 172914 364 364 0 230065 0
[pid=8564] vsize: 921716
Current children cumulated CPU time (s) 91.24
Current children cumulated vsize (Kb) 921716

Sending SIGTERM to -8564
Sleeping 2 seconds
Sending SIGKILL to -8564
One traced child (pid=8564) ended because it received signal 9 (SIGKILL)
All traced children have exited ! Game is over.

Child ended because it received signal 9 (SIGKILL)
Real time (s): 93.7937
CPU time (s): 91.6601
CPU user time (s): 85.578
CPU system time (s): 6.08208
CPU usage (%): 97.7252
Max. virtual memory (cumulated for all children) (Kb): 921716

Verifier Data

ERROR: no interpretation found !