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/plato.asu.edu/pub/milp/normalized-mps-v2-20-10-dano3_4.opb
MD5SUM0fb19246428e886fa1f72b2bd977e0d3
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
Satisfiable
(Un)Satisfiability was proved
Best value of the objective function
Optimality of the best value was proved
Number of terms in the objective function 30
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 1073741823
Number of bits of the sum of numbers in the objective function 30
Biggest number in a constraint 134217728000
Number of bits of the biggest number in a constraint 37
Biggest sum of numbers in a constraint 569083166190
Number of bits of the biggest sum of numbers40
Best result obtained on this benchmark
Best CPU time to get the best result obtained on this benchmark
Number of variables404566
Total number of constraints3778
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)96
Number of constraints which are nor clauses,nor cardinality constraints3682
Minimum length of a constraint1
Maximum length of a constraint15900

Trace number 10158

Launcher Data

LAUNCH ON wulflinc19 THE 2005-09-23 17:20:35 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=8916 boxname=wulflinc19 idbench=712 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  0fb19246428e886fa1f72b2bd977e0d3  /oldhome/oroussel/tmp/wulflinc19/normalized-mps-v2-20-10-dano3_4.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc19/normalized-mps-v2-20-10-dano3_4.opb
IDLAUNCH: 8916
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.169
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		: 451.169
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:        866044 kB
Buffers:         15904 kB
Cached:         132472 kB
SwapCached:          0 kB
Active:          85144 kB
Inactive:        66132 kB
HighTotal:      131008 kB
HighFree:         3752 kB
LowTotal:       903652 kB
LowFree:        862292 kB
SwapTotal:     2097892 kB
SwapFree:      2097892 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6980 kB
Slab:            11612 kB
Committed_AS:    63660 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-23 17:22:10 (client local time) WITH STATUS 0 IN 91.777 SECONDS
stats: 8916 7 91.777 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/9195/stat): 9195 (pb2sat) R 9194 9195 4060 0 -1 0 18 0 0 0 0 0 0 0 23 0 1 0 21941438 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/9195/statm): 373 2 364 364 0 9 0
[pid=9195] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc19/normalized-mps-v2-20-10-dano3_4.opb

[startup+10.0022 s]
Raw data (loadavg): 1.01 0.99 0.94 2/55 9195
Raw data (/proc/9195/stat): 9195 (pb2sat) R 9194 9195 4060 0 -1 0 27781 0 0 0 933 63 0 0 25 0 1 0 21941438 86790144 16655 4294967295 134512640 135987407 3221224560 3220872464 134878060 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9195/statm): 21189 16655 364 364 0 20825 0
[pid=9195] vsize: 84756
Current children cumulated CPU time (s) 9.96
Current children cumulated vsize (Kb) 84756

[startup+20.0031 s]
Raw data (loadavg): 1.00 0.99 0.94 2/55 9195
Raw data (/proc/9195/stat): 9195 (pb2sat) R 9194 9195 4060 0 -1 0 55913 0 0 0 1870 125 0 0 25 0 1 0 21941438 164503552 33547 4294967295 134512640 135987407 3221224560 3221221696 134639025 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9195/statm): 40162 33547 364 364 0 39798 0
[pid=9195] vsize: 160648
Current children cumulated CPU time (s) 19.95
Current children cumulated vsize (Kb) 160648

[startup+30.0039 s]
Raw data (loadavg): 1.00 0.99 0.94 2/55 9195
Raw data (/proc/9195/stat): 9195 (pb2sat) R 9194 9195 4060 0 -1 0 95472 0 0 0 2783 209 0 0 25 0 1 0 21941438 314253312 50897 4294967295 134512640 135987407 3221224560 3220885732 134558630 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9195/statm): 76722 50897 364 364 0 76358 0
[pid=9195] vsize: 306888
Current children cumulated CPU time (s) 29.92
Current children cumulated vsize (Kb) 306888

[startup+40.0047 s]
Raw data (loadavg): 1.00 0.99 0.94 2/55 9195
Raw data (/proc/9195/stat): 9195 (pb2sat) R 9194 9195 4060 0 -1 0 111847 0 0 0 3744 248 0 0 25 0 1 0 21941438 318713856 67002 4294967295 134512640 135987407 3221224560 3221000540 134637011 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9195/statm): 77811 67002 364 364 0 77447 0
[pid=9195] vsize: 311244
Current children cumulated CPU time (s) 39.92
Current children cumulated vsize (Kb) 311244

[startup+50.0055 s]
Raw data (loadavg): 1.00 0.99 0.94 2/55 9195
Raw data (/proc/9195/stat): 9195 (pb2sat) R 9194 9195 4060 0 -1 0 164191 0 0 0 4633 355 0 0 25 0 1 0 21941438 648798208 99727 4294967295 134512640 135987407 3221224560 3220981136 134887487 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9195/statm): 158398 99727 364 364 0 158034 0
[pid=9195] vsize: 633592
Current children cumulated CPU time (s) 49.88
Current children cumulated vsize (Kb) 633592

[startup+60.0053 s]
Raw data (loadavg): 1.00 0.99 0.94 2/55 9195
Raw data (/proc/9195/stat): 9195 (pb2sat) R 9194 9195 4060 0 -1 0 191067 0 0 0 5571 417 0 0 25 0 1 0 21941438 585875456 101812 4294967295 134512640 135987407 3221224560 3220796524 134865862 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9195/statm): 143036 101812 364 364 0 142672 0
[pid=9195] vsize: 572144
Current children cumulated CPU time (s) 59.88
Current children cumulated vsize (Kb) 572144

[startup+70.0062 s]
Raw data (loadavg): 1.00 0.99 0.94 2/55 9195
Raw data (/proc/9195/stat): 9195 (pb2sat) R 9194 9195 4060 0 -1 0 207311 0 0 0 6532 455 0 0 25 0 1 0 21941438 590200832 117787 4294967295 134512640 135987407 3221224560 3220948320 134866075 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9195/statm): 144092 117787 364 364 0 143728 0
[pid=9195] vsize: 576368
Current children cumulated CPU time (s) 69.87
Current children cumulated vsize (Kb) 576368

[startup+80.007 s]
Raw data (loadavg): 1.00 0.99 0.94 2/55 9195
Raw data (/proc/9195/stat): 9195 (pb2sat) R 9194 9195 4060 0 -1 0 223028 0 0 0 7493 495 0 0 25 0 1 0 21941438 644722688 133244 4294967295 134512640 135987407 3221224560 3220982944 134877638 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9195/statm): 157403 133244 364 364 0 157039 0
[pid=9195] vsize: 629612
Current children cumulated CPU time (s) 79.88
Current children cumulated vsize (Kb) 629612

[startup+90.0078 s]
Raw data (loadavg): 1.00 0.99 0.94 2/55 9195
Raw data (/proc/9195/stat): 9195 (pb2sat) R 9194 9195 4060 0 -1 0 236871 0 0 0 8460 527 0 0 25 0 1 0 21941438 648777728 146860 4294967295 134512640 135987407 3221224560 3220901024 134878632 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9195/statm): 158393 146860 364 364 0 158029 0
[pid=9195] vsize: 633572
Current children cumulated CPU time (s) 89.87
Current children cumulated vsize (Kb) 633572



Mem limit exceeded: sending SIGTERM then SIGKILL

[startup+91.5845 s]
Raw data (loadavg): 1.00 0.99 0.94 1/55 9195
Raw data (/proc/9195/stat): 9195 (pb2sat) T 9194 9195 4060 0 -1 0 244209 0 0 0 8600 543 0 0 25 0 1 0 21941438 943726592 153988 4294967295 134512640 135987407 3221224560 3221049212 135635874 0 0 5 16384 3222434794 0 0 17 1 0 0
Raw data (/proc/9195/statm): 230402 153988 364 364 0 230038 0
[pid=9195] vsize: 921608
Current children cumulated CPU time (s) 91.43
Current children cumulated vsize (Kb) 921608

Sending SIGTERM to -9195
Sleeping 2 seconds
Sending SIGKILL to -9195
One traced child (pid=9195) 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): 93.9039
CPU time (s): 91.777
CPU user time (s): 86.0329
CPU system time (s): 5.74413
CPU usage (%): 97.735
Max. virtual memory (cumulated for all children) (Kb): 921608

Verifier Data

ERROR: no interpretation found !