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-neos6.opb
MD5SUM6975fcd4cac18749e2635ee3bd162046
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 6690
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 239444426529
Number of bits of the sum of numbers in the objective function 38
Biggest number in a constraint 536870912
Number of bits of the biggest number in a constraint 30
Biggest sum of numbers in a constraint 239444426529
Number of bits of the biggest sum of numbers38
Best result obtained on this benchmark
Best CPU time to get the best result obtained on this benchmark
Number of variables21720
Total number of constraints9376
Number of constraints which are clauses48
Number of constraints which are cardinality constraints (but not clauses)9095
Number of constraints which are nor clauses,nor cardinality constraints233
Minimum length of a constraint1
Maximum length of a constraint840

Trace number 10176

Launcher Data

LAUNCH ON wulflinc28 THE 2005-09-23 17:24:20 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=8935 boxname=wulflinc28 idbench=731 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  6975fcd4cac18749e2635ee3bd162046  /oldhome/oroussel/tmp/wulflinc28/normalized-mps-v2-20-10-neos6.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc28/normalized-mps-v2-20-10-neos6.opb
IDLAUNCH: 8935
/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	: 899.07

/proc/meminfo:
MemTotal:      1034660 kB
MemFree:        930736 kB
Buffers:         12012 kB
Cached:          74620 kB
SwapCached:          0 kB
Active:          49584 kB
Inactive:        39944 kB
HighTotal:      131008 kB
HighFree:        52164 kB
LowTotal:       903652 kB
LowFree:        878572 kB
SwapTotal:     2097640 kB
SwapFree:      2097640 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6984 kB
Slab:             8712 kB
Committed_AS:    63632 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-23 17:26:04 (client local time) WITH STATUS 0 IN 102.188 SECONDS
stats: 8935 7 102.188 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/9151/stat): 9151 (pb2sat) R 9150 9151 4005 0 -1 0 18 0 0 0 0 0 0 0 23 0 1 0 21927627 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/9151/statm): 373 2 364 364 0 9 0
[pid=9151] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc28/normalized-mps-v2-20-10-neos6.opb

[startup+10.0025 s]
Raw data (loadavg): 0.92 0.97 0.98 2/55 9151
Raw data (/proc/9151/stat): 9151 (pb2sat) R 9150 9151 4005 0 -1 0 24743 0 0 0 937 59 0 0 25 0 1 0 21927627 82329600 13644 4294967295 134512640 135987407 3221224560 3220982944 134877628 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9151/statm): 20100 13644 364 364 0 19736 0
[pid=9151] vsize: 80400
Current children cumulated CPU time (s) 9.96
Current children cumulated vsize (Kb) 80400

[startup+20.0032 s]
Raw data (loadavg): 0.93 0.97 0.98 2/55 9151
Raw data (/proc/9151/stat): 9151 (pb2sat) R 9150 9151 4005 0 -1 0 50875 0 0 0 1874 120 0 0 25 0 1 0 21927627 159502336 28562 4294967295 134512640 135987407 3221224560 3221174704 134887887 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9151/statm): 38941 28563 364 364 0 38577 0
[pid=9151] vsize: 155764
Current children cumulated CPU time (s) 19.94
Current children cumulated vsize (Kb) 155764

[startup+30.0029 s]
Raw data (loadavg): 0.94 0.97 0.98 2/55 9151
Raw data (/proc/9151/stat): 9151 (pb2sat) R 9150 9151 4005 0 -1 0 82920 0 0 0 2805 187 0 0 25 0 1 0 21927627 326979584 50692 4294967295 134512640 135987407 3221224560 3221201248 134887487 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9151/statm): 79829 50692 364 364 0 79465 0
[pid=9151] vsize: 319316
Current children cumulated CPU time (s) 29.92
Current children cumulated vsize (Kb) 319316

[startup+40.0036 s]
Raw data (loadavg): 0.95 0.97 0.98 2/55 9151
Raw data (/proc/9151/stat): 9151 (pb2sat) R 9150 9151 4005 0 -1 0 103742 0 0 0 3757 235 0 0 25 0 1 0 21927627 316145664 59009 4294967295 134512640 135987407 3221224560 3221194936 134854861 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9151/statm): 77184 59009 364 364 0 76820 0
[pid=9151] vsize: 308736
Current children cumulated CPU time (s) 39.92
Current children cumulated vsize (Kb) 308736

[startup+50.0043 s]
Raw data (loadavg): 0.96 0.97 0.98 2/55 9151
Raw data (/proc/9151/stat): 9151 (pb2sat) R 9150 9151 4005 0 -1 0 119835 0 0 0 4720 271 0 0 25 0 1 0 21927627 324255744 74854 4294967295 134512640 135987407 3221224560 3221144428 134635332 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9151/statm): 79164 74854 364 364 0 78800 0
[pid=9151] vsize: 316656
Current children cumulated CPU time (s) 49.91
Current children cumulated vsize (Kb) 316656

[startup+60.005 s]
Raw data (loadavg): 0.96 0.97 0.98 2/55 9151
Raw data (/proc/9151/stat): 9151 (pb2sat) R 9150 9151 4005 0 -1 0 183642 0 0 0 5579 406 0 0 25 0 1 0 21927627 553132032 94504 4294967295 134512640 135987407 3221224560 3221197964 135499903 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9151/statm): 135042 94504 364 364 0 134678 0
[pid=9151] vsize: 540168
Current children cumulated CPU time (s) 59.85
Current children cumulated vsize (Kb) 540168

[startup+70.0046 s]
Raw data (loadavg): 0.97 0.97 0.98 2/55 9151
Raw data (/proc/9151/stat): 9151 (pb2sat) R 9150 9151 4005 0 -1 0 196672 0 0 0 6549 436 0 0 25 0 1 0 21927627 591822848 107328 4294967295 134512640 135987407 3221224560 3221201504 134537491 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9151/statm): 144488 107328 364 364 0 144124 0
[pid=9151] vsize: 577952
Current children cumulated CPU time (s) 69.85
Current children cumulated vsize (Kb) 577952

[startup+80.0053 s]
Raw data (loadavg): 0.97 0.97 0.98 2/55 9151
Raw data (/proc/9151/stat): 9151 (pb2sat) R 9150 9151 4005 0 -1 0 211650 0 0 0 7517 468 0 0 25 0 1 0 21927627 598716416 122072 4294967295 134512640 135987407 3221224560 3221062112 134887887 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9151/statm): 146171 122072 364 364 0 145807 0
[pid=9151] vsize: 584684
Current children cumulated CPU time (s) 79.85
Current children cumulated vsize (Kb) 584684

[startup+90.006 s]
Raw data (loadavg): 0.98 0.97 0.98 2/55 9151
Raw data (/proc/9151/stat): 9151 (pb2sat) R 9150 9151 4005 0 -1 0 225754 0 0 0 8487 498 0 0 25 0 1 0 21927627 654184448 135950 4294967295 134512640 135987407 3221224560 3221073328 134877628 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9151/statm): 159713 135950 364 364 0 159349 0
[pid=9151] vsize: 638852
Current children cumulated CPU time (s) 89.85
Current children cumulated vsize (Kb) 638852

[startup+100.006 s]
Raw data (loadavg): 0.98 0.97 0.98 2/55 9151
Raw data (/proc/9151/stat): 9151 (pb2sat) R 9150 9151 4005 0 -1 0 237529 0 0 0 9463 521 0 0 25 0 1 0 21927627 657293312 147532 4294967295 134512640 135987407 3221224560 3221197500 134636940 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9151/statm): 160472 147532 364 364 0 160108 0
[pid=9151] vsize: 641888
Current children cumulated CPU time (s) 99.84
Current children cumulated vsize (Kb) 641888



Mem limit exceeded: sending SIGTERM then SIGKILL

[startup+102.011 s]
Raw data (loadavg): 0.98 0.97 0.98 1/55 9151
Raw data (/proc/9151/stat): 9151 (pb2sat) T 9150 9151 4005 0 -1 0 240680 0 0 0 9658 527 0 0 25 0 1 0 21927627 944807936 150637 4294967295 134512640 135987407 3221224560 3221175328 135544035 0 0 5 16384 3222434794 0 0 17 0 0 0
Raw data (/proc/9151/statm): 230666 150637 364 364 0 230302 0
[pid=9151] vsize: 922664
Current children cumulated CPU time (s) 101.85
Current children cumulated vsize (Kb) 922664

Sending SIGTERM to -9151
Sleeping 2 seconds
Sending SIGKILL to -9151
One traced child (pid=9151) 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): 104.326
CPU time (s): 102.188
CPU user time (s): 96.6033
CPU system time (s): 5.58515
CPU usage (%): 97.9515
Max. virtual memory (cumulated for all children) (Kb): 922664

Verifier Data

ERROR: no interpretation found !