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/plato.asu.edu/pub/milp/normalized-mps-v2-13-7-dano3_4.opb
MD5SUM53ae35dd3424f79abe62dc18aab624bf
Bench Categoryoptimization, medium integers (OPTMEDINT)
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 20
Biggest coefficient in the objective function 524288
Number of bits for the biggest coefficient in the objective function 20
Sum of the numbers in the objective function 1048575
Number of bits of the sum of numbers in the objective function 20
Biggest number in a constraint 131072000
Number of bits of the biggest number in a constraint 27
Biggest sum of numbers in a constraint 576307709
Number of bits of the biggest sum of numbers30
Best result obtained on this benchmark
Best CPU time to get the best result obtained on this benchmark
Number of variables270144
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 constraint10600

Trace number 10539

Launcher Data

LAUNCH ON wulflinc11 THE 2005-09-23 18:55:07 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=9301 boxname=wulflinc11 idbench=1097 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  53ae35dd3424f79abe62dc18aab624bf  /oldhome/oroussel/tmp/wulflinc11/normalized-mps-v2-13-7-dano3_4.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc11/normalized-mps-v2-13-7-dano3_4.opb
IDLAUNCH: 9301
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.045
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		: 451.045
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:        876752 kB
Buffers:          9904 kB
Cached:         122152 kB
SwapCached:          0 kB
Active:          80220 kB
Inactive:        61380 kB
HighTotal:      131008 kB
HighFree:         6580 kB
LowTotal:       903652 kB
LowFree:        870172 kB
SwapTotal:     2097136 kB
SwapFree:      2097136 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6980 kB
Slab:            10536 kB
Committed_AS:    63660 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-23 18:56:40 (client local time) WITH STATUS 0 IN 91.0032 SECONDS
stats: 9301 7 91.0032 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/11732/stat): 11732 (pb2sat) R 11731 11732 4060 0 -1 0 18 0 0 0 0 0 0 0 23 0 1 0 22509948 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/11732/statm): 373 2 364 364 0 9 0
[pid=11732] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc11/normalized-mps-v2-13-7-dano3_4.opb

[startup+10.002 s]
Raw data (loadavg): 0.89 0.94 0.91 2/55 11732
Raw data (/proc/11732/stat): 11732 (pb2sat) R 11731 11732 4060 0 -1 0 27443 0 0 0 932 64 0 0 25 0 1 0 22509948 83791872 16311 4294967295 134512640 135987407 3221224560 3221091504 134931273 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/11732/statm): 20457 16311 364 364 0 20093 0
[pid=11732] vsize: 81828
Current children cumulated CPU time (s) 9.96
Current children cumulated vsize (Kb) 81828

[startup+20.0028 s]
Raw data (loadavg): 0.90 0.94 0.91 2/55 11732
Raw data (/proc/11732/stat): 11732 (pb2sat) R 11731 11732 4060 0 -1 0 55826 0 0 0 1868 127 0 0 25 0 1 0 22509948 161640448 33449 4294967295 134512640 135987407 3221224560 3221221188 135478476 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/11732/statm): 39463 33449 364 364 0 39099 0
[pid=11732] vsize: 157852
Current children cumulated CPU time (s) 19.95
Current children cumulated vsize (Kb) 157852

[startup+30.0036 s]
Raw data (loadavg): 0.92 0.94 0.91 2/55 11732
Raw data (/proc/11732/stat): 11732 (pb2sat) R 11731 11732 4060 0 -1 0 95427 0 0 0 2782 210 0 0 25 0 1 0 22509948 311390208 50842 4294967295 134512640 135987407 3221224560 3221081760 134866034 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/11732/statm): 76023 50842 364 364 0 75659 0
[pid=11732] vsize: 304092
Current children cumulated CPU time (s) 29.92
Current children cumulated vsize (Kb) 304092

[startup+40.0044 s]
Raw data (loadavg): 0.93 0.94 0.91 2/55 11732
Raw data (/proc/11732/stat): 11732 (pb2sat) R 11731 11732 4060 0 -1 0 112036 0 0 0 3744 248 0 0 25 0 1 0 22509948 316256256 67177 4294967295 134512640 135987407 3221224560 3221152900 135480412 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/11732/statm): 77211 67177 364 364 0 76847 0
[pid=11732] vsize: 308844
Current children cumulated CPU time (s) 39.92
Current children cumulated vsize (Kb) 308844

[startup+50.0052 s]
Raw data (loadavg): 0.94 0.95 0.91 2/55 11732
Raw data (/proc/11732/stat): 11732 (pb2sat) R 11731 11732 4060 0 -1 0 174720 0 0 0 4612 375 0 0 25 0 1 0 22509948 646070272 110257 4294967295 134512640 135987407 3221224560 3221047360 134887487 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/11732/statm): 157732 110257 364 364 0 157368 0
[pid=11732] vsize: 630928
Current children cumulated CPU time (s) 49.87
Current children cumulated vsize (Kb) 630928

[startup+60.005 s]
Raw data (loadavg): 0.95 0.95 0.91 2/55 11732
Raw data (/proc/11732/stat): 11732 (pb2sat) R 11731 11732 4060 0 -1 0 191503 0 0 0 5569 417 0 0 25 0 1 0 22509948 583147520 102230 4294967295 134512640 135987407 3221224560 3221176560 134557156 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/11732/statm): 142370 102230 364 364 0 142006 0
[pid=11732] vsize: 569480
Current children cumulated CPU time (s) 59.86
Current children cumulated vsize (Kb) 569480

[startup+70.0058 s]
Raw data (loadavg): 0.96 0.95 0.91 2/55 11732
Raw data (/proc/11732/stat): 11732 (pb2sat) R 11731 11732 4060 0 -1 0 208018 0 0 0 6526 460 0 0 25 0 1 0 22509948 587878400 118473 4294967295 134512640 135987407 3221224560 3221221172 134562648 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/11732/statm): 143525 118473 364 364 0 143161 0
[pid=11732] vsize: 574100
Current children cumulated CPU time (s) 69.86
Current children cumulated vsize (Kb) 574100

[startup+80.0065 s]
Raw data (loadavg): 0.96 0.95 0.91 2/55 11732
Raw data (/proc/11732/stat): 11732 (pb2sat) R 11731 11732 4060 0 -1 0 222248 0 0 0 7494 492 0 0 25 0 1 0 22509948 641724416 132467 4294967295 134512640 135987407 3221224560 3221067952 134877708 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/11732/statm): 156671 132467 364 364 0 156307 0
[pid=11732] vsize: 626684
Current children cumulated CPU time (s) 79.86
Current children cumulated vsize (Kb) 626684

[startup+90.0073 s]
Raw data (loadavg): 0.97 0.95 0.91 2/55 11732
Raw data (/proc/11732/stat): 11732 (pb2sat) R 11731 11732 4060 0 -1 0 237956 0 0 0 8457 528 0 0 25 0 1 0 22509948 646590464 147918 4294967295 134512640 135987407 3221224560 3221108036 134557986 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/11732/statm): 157859 147918 364 364 0 157495 0
[pid=11732] vsize: 631436
Current children cumulated CPU time (s) 89.85
Current children cumulated vsize (Kb) 631436



Mem limit exceeded: sending SIGTERM then SIGKILL

[startup+90.8229 s]
Raw data (loadavg): 0.97 0.95 0.91 1/55 11732
Raw data (/proc/11732/stat): 11732 (pb2sat) T 11731 11732 4060 0 -1 0 245534 0 0 0 8523 543 0 0 25 0 1 0 22509948 943837184 155248 4294967295 134512640 135987407 3221224560 3221064668 135635874 0 0 5 16384 3222434794 0 0 17 1 0 0
Raw data (/proc/11732/statm): 230429 155248 364 364 0 230065 0
[pid=11732] vsize: 921716
Current children cumulated CPU time (s) 90.66
Current children cumulated vsize (Kb) 921716

Sending SIGTERM to -11732
Sleeping 2 seconds
Sending SIGKILL to -11732
One traced child (pid=11732) 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): 93.1443
CPU time (s): 91.0032
CPU user time (s): 85.252
CPU system time (s): 5.75113
CPU usage (%): 97.7013
Max. virtual memory (cumulated for all children) (Kb): 921716

Verifier Data

ERROR: no interpretation found !