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).
  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

Namenormalized-opb/mps-v2-20-10/MIPLIB/miplib/normalized-mps-v2-20-10-misc02.opb
MD5SUMa0ad7d9714fa2256add068ab80d287bd
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 1075471360
Optimality of the best value was proved NO
Number of terms in the objective function 31
Biggest coefficient in the objective function 1073741824
Number of bits for the biggest coefficient in the objective function 31
Sum of the numbers in the objective function 2147483647
Number of bits of the sum of numbers in the objective function 31
Biggest number in a constraint 1073741824
Number of bits of the biggest number in a constraint 31
Biggest sum of numbers in a constraint 3234157567
Number of bits of the biggest sum of numbers32
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark2.77858
Number of variables89
Total number of constraints97
Number of constraints which are clauses7
Number of constraints which are cardinality constraints (but not clauses)65
Number of constraints which are nor clauses,nor cardinality constraints25
Minimum length of a constraint1
Maximum length of a constraint79

Trace number 34531 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc9 THE 2005-05-27 23:54:15 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=11955 boxname=wulflinc9 idbench=920 idsolver=8 numberseed=0
MD5SUM SOLVER: 4b637b3b6117f2add1a6288e91336322  /oldhome/oroussel/solvers/vallstSAT2005PB.sh
MD5SUM BENCH:  a0ad7d9714fa2256add068ab80d287bd  /oldhome/oroussel/tmp/wulflinc9/normalized-mps-v2-20-10-misc02.opb
REAL COMMAND:  vallstSAT2005PB.sh /oldhome/oroussel/tmp/wulflinc9/normalized-mps-v2-20-10-misc02.opb 0
IDLAUNCH: 11955
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.242
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		: 451.242
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:        688472 kB
Buffers:         24564 kB
Cached:         297668 kB
SwapCached:        564 kB
Active:          20408 kB
Inactive:       303816 kB
HighTotal:      131008 kB
HighFree:        48804 kB
LowTotal:       903652 kB
LowFree:        639668 kB
SwapTotal:     2097136 kB
SwapFree:      2095636 kB
Dirty:              52 kB
Writeback:           0 kB
Mapped:           5124 kB
Slab:            16256 kB
Committed_AS:    63600 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-05-27 23:54:20 (client local time) WITH STATUS 30 IN 4.44432 SECONDS
stats: 11955 0 4.44432 30
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
1:
seed: 0
Nr of vars set: 0  (#equs: 0)
Nr of vars set: 14  (#equs: 0)
#decisions: 42;  #end-nodes: 10;
#proof improvement attempts: 0;  #restarts: 0
Current batch, end-nodes: 10 / 80 (80)
#axs: 54, #non-axs: 1
tight: meta-meta: start: 6, end: 9;  meta: start: 12, end (keep): 23
loose: meta-meta: start: 9, end: 14;  meta: start: 30, end (keep): 50
result: model found (1)
Model found with constant:  1071044606 (1076439040:>=*);
#decisions: 19;  #end-nodes: 3;
#proof improvement attempts: 0;  #restarts: 0
Current batch, end-nodes: 3 / 80 (80)
#axs: 54, #non-axs: 1
tight: meta-meta: start: 6, end: 9;  meta: start: 12, end (keep): 23
loose: meta-meta: start: 9, end: 14;  meta: start: 30, end (keep): 50
Model found with constant:  1071121406 (1076362240:>=*);
#decisions: 24;  #end-nodes: 3;
#proof improvement attempts: 0;  #restarts: 0
Current batch, end-nodes: 3 / 80 (80)
#axs: 54, #non-axs: 1
tight: meta-meta: start: 6, end: 9;  meta: start: 12, end (keep): 23
loose: meta-meta: start: 9, end: 14;  meta: start: 30, end (keep): 50
Model found with constant:  1071198206 (1076285440:>=*);
#decisions: 33;  #end-nodes: 2;
#proof improvement attempts: 0;  #restarts: 0
Current batch, end-nodes: 2 / 80 (80)
#axs: 54, #non-axs: 1
tight: meta-meta: start: 6, end: 9;  meta: start: 12, end (keep): 23
loose: meta-meta: start: 9, end: 14;  meta: start: 30, end (keep): 50
Model found with constant:  1071249406 (1076234240:>=*);
#decisions: 47;  #end-nodes: 9;
#proof improvement attempts: 0;  #restarts: 0
Current batch, end-nodes: 9 / 80 (80)
#axs: 54, #non-axs: 2
tight: meta-meta: start: 6, end: 9;  meta: start: 12, end (keep): 23
loose: meta-meta: start: 9, end: 14;  meta: start: 30, end (keep): 50
Model found with constant:  1071326206 (1076157440:>=*);
#decisions: 46;  #end-nodes: 9;
#proof improvement attempts: 0;  #restarts: 0
Current batch, end-nodes: 9 / 80 (80)
#axs: 54, #non-axs: 2
tight: meta-meta: start: 6, end: 9;  meta: start: 12, end (keep): 23
loose: meta-meta: start: 9, end: 14;  meta: start: 30, end (keep): 50
Model found with constant:  1071403006 (1076080640:>=*);
#decisions: 28;  #end-nodes: 4;
#proof improvement attempts: 0;  #restarts: 0
Current batch, end-nodes: 4 / 80 (80)
#axs: 54, #non-axs: 3
tight: meta-meta: start: 6, end: 9;  meta: start: 12, end (keep): 23
loose: meta-meta: start: 9, end: 14;  meta: start: 30, end (keep): 50
Model found with constant:  1071474686 (1076008960:>=*);
#decisions: 44;  #end-nodes: 10;
#proof improvement attempts: 0;  #restarts: 0
Current batch, end-nodes: 10 / 80 (80)
#axs: 54, #non-axs: 4
tight: meta-meta: start: 6, end: 9;  meta: start: 12, end (keep): 23
loose: meta-meta: start: 9, end: 14;  meta: start: 30, end (keep): 50
Model found with constant:  1071551486 (1075932160:>=*);
#decisions: 23;  #end-nodes: 4;
#proof improvement attempts: 0;  #restarts: 0
Current batch, end-nodes: 4 / 81 (80)
#axs: 54, #non-axs: 6
tight: meta-meta: start: 6, end: 9;  meta: start: 12, end (keep): 23
loose: meta-meta: start: 9, end: 14;  meta: start: 30, end (keep): 50
Model found with constant:  1071628286 (1075855360:>=*);
#decisions: 41;  #end-nodes: 22;
#proof improvement attempts: 0;  #restarts: 0
Current batch, end-nodes: 22 / 84 (80)
#axs: 54, #non-axs: 14
tight: meta-meta: start: 6, end: 9;  meta: start: 12, end (keep): 23
loose: meta-meta: start: 9, end: 14;  meta: start: 30, end (keep): 50
Model found with constant:  1071705086 (1075778560:>=*);
#decisions: 15;  #end-nodes: 1;
#proof improvement attempts: 0;  #restarts: 0
Current batch, end-nodes: 1 / 80 (80)
#axs: 54, #non-axs: 14
tight: meta-meta: start: 6, end: 9;  meta: start: 12, end (keep): 23
loose: meta-meta: start: 9, end: 14;  meta: start: 30, end (keep): 50
Model found with constant:  1072012286 (1075471360:>=*);
#decisions: 735;  #end-nodes: 525;
#proof improvement attempts: 0;  #restarts: 1
Current batch, end-nodes: 430 / 901 (80)
#axs: 54, #non-axs: 294
tight: meta-meta: start: 6, end: 9;  meta: start: 12, end (keep): 23
loose: meta-meta: start: 9, end: 14;  meta: start: 30, end (keep): 50
Model found with constant:
  (pushed:) 1072012286 (1075471360:>=*)

With an increment of the last pushed constant, a proof of false was found.
result: proof of false found (0)
seed: 0
Nr of vars set: 62  (#equs: 0)
Time taken in milliseconds: 4270
times:
0m0.018s 0m0.009s
0m4.205s 0m0.083s
v -COL059_bit_10 -COL059_bit_9 -COL059_bit_8 -COL059_bit_7 -COL059_bit_6 -COL059_bit_5 -COL059_bit_4 -COL059_bit_3 -COL059_bit_2 -COL059_bit_1  COL059_bit0 -COL059_bit1 -COL059_bit2  COL059_bit3  COL059_bit4 -COL059_bit5 -COL059_bit6  COL059_bit7 -COL059_bit8  COL059_bit9  COL059_bit10 -COL059_bit11 -COL059_bit12 -COL059_bit13 -COL059_bit14 -COL059_bit15 -COL059_bit16 -COL059_bit17 -COL059_bit18 -COL059_bit19  COL059_bit20 -COL001_bit0 -COL002_bit0 -COL003_bit0  COL004_bit0 -COL005_bit0 -COL006_bit0 -COL007_bit0 -COL008_bit0 -COL009_bit0 -COL010_bit0 -COL011_bit0 -COL012_bit0 -COL013_bit0 -COL014_bit0 -COL015_bit0 -COL016_bit0 -COL017_bit0 -COL018_bit0 -COL019_bit0  COL020_bit0 -COL021_bit0 -COL022_bit0 -COL023_bit0 -COL024_bit0 -COL025_bit0 -COL026_bit0 -COL027_bit0 -COL028_bit0  COL029_bit0 -COL030_bit0 -COL031_bit0 -COL032_bit0 -COL033_bit0 -COL034_bit0 -COL035_bit0 -COL036_bit0 -COL037_bit0 -COL038_bit0 -COL039_bit0 -COL040_bit0 -COL041_bit0  COL042_bit0 -COL043_bit0 -COL044_bit0  COL045_bit0 -COL046_bit0 -COL047_bit0 -COL048_bit0 -COL049_bit0 -COL050_bit0 -COL051_bit0  COL052_bit0 -COL053_bit0  COL054_bit0 -COL055_bit0  COL056_bit0 -COL057_bit0  COL058_bit0 
s OPTIMUM FOUND
#### END SOLVER DATA ####
#### BEGIN WATCHER DATA ####
Enforcing CPU limit (will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime (will send SIGXCPU) limit: 1230 seconds
Enforcing VSIZE limit: 943718400 bytes
Enforcing Stack size limit: 67108864 bytes
Current StackSize limit: 67108864 bytes
Raw data (loadavg): 0.76 0.91 0.95 2/54 13756
Raw data (stat): 13756 (runsolver) R 13755 3944 3943 0 -1 64 8 0 0 0 0 0 0 0 19 0 1 0 802055731 884736 94 4294967295 134512640 135332820 3221224448 3221219612 135092226 0 2147483391 7 90112 0 0 0 17 1 0 0
Raw data (statm): 216 94 205 205 0 11 0
vsize: 864
[startup+4.7898 s]
Raw data (loadavg): 0.78 0.91 0.95 1/53 13769
Raw data (stat): 13756 (runsolver) R 13755 3944 3943 0 -1 64 8 0 0 0 0 0 0 0 19 0 1 0 802055731 884736 94 4294967295 134512640 135332820 3221224448 3221219612 135092226 0 2147483391 7 90112 0 0 0 17 1 0 0
Raw data (statm): 216 94 205 205 0 11 0
vsize: 0

Child status: 30
Real time (s): 4.78957
CPU time (s): 4.44432
CPU user time (s): 4.27535
CPU system time (s): 0.168974
CPU usage (%): 92.7917
Max. virtual memory (Kb): 864
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
Verifier:	OK	1075471360
#### END VERIFIER DATA ####