./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loops/nec11_false-unreach-call_false-termination.i --full-output --architecture 32bit


--------------------------------------------------------------------------------


Checking for termination
Using default analysis
Version 635dfa2a
Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_a9a5aa5c-d948-44ee-a0e6-a3dba4b80134/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_a9a5aa5c-d948-44ee-a0e6-a3dba4b80134/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_a9a5aa5c-d948-44ee-a0e6-a3dba4b80134/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_a9a5aa5c-d948-44ee-a0e6-a3dba4b80134/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loops/nec11_false-unreach-call_false-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_a9a5aa5c-d948-44ee-a0e6-a3dba4b80134/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_a9a5aa5c-d948-44ee-a0e6-a3dba4b80134/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) )

 --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 377e57d4a3daf9b967866e1410a183dc7f79915c
....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Execution finished normally
Writing output log to file Ultimate.log
Writing human readable error path to file UltimateCounterExample.errorpath
Result:
FALSE(TERM)
--- Real Ultimate output ---
This is Ultimate 0.1.23-635dfa2
[2018-12-09 12:18:09,503 INFO  L170        SettingsManager]: Resetting all preferences to default values...
[2018-12-09 12:18:09,504 INFO  L174        SettingsManager]: Resetting UltimateCore preferences to default values
[2018-12-09 12:18:09,510 INFO  L177        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2018-12-09 12:18:09,510 INFO  L174        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2018-12-09 12:18:09,511 INFO  L174        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2018-12-09 12:18:09,511 INFO  L174        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2018-12-09 12:18:09,512 INFO  L174        SettingsManager]: Resetting LassoRanker preferences to default values
[2018-12-09 12:18:09,513 INFO  L174        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2018-12-09 12:18:09,513 INFO  L174        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2018-12-09 12:18:09,514 INFO  L177        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2018-12-09 12:18:09,514 INFO  L174        SettingsManager]: Resetting LTL2Aut preferences to default values
[2018-12-09 12:18:09,514 INFO  L174        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2018-12-09 12:18:09,515 INFO  L174        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2018-12-09 12:18:09,515 INFO  L174        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2018-12-09 12:18:09,516 INFO  L174        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2018-12-09 12:18:09,516 INFO  L174        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2018-12-09 12:18:09,517 INFO  L174        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2018-12-09 12:18:09,518 INFO  L174        SettingsManager]: Resetting CodeCheck preferences to default values
[2018-12-09 12:18:09,518 INFO  L174        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2018-12-09 12:18:09,519 INFO  L174        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2018-12-09 12:18:09,519 INFO  L174        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2018-12-09 12:18:09,520 INFO  L177        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2018-12-09 12:18:09,521 INFO  L177        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2018-12-09 12:18:09,521 INFO  L174        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2018-12-09 12:18:09,521 INFO  L174        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2018-12-09 12:18:09,522 INFO  L174        SettingsManager]: Resetting Boogie Printer preferences to default values
[2018-12-09 12:18:09,522 INFO  L174        SettingsManager]: Resetting ReqPrinter preferences to default values
[2018-12-09 12:18:09,522 INFO  L174        SettingsManager]: Resetting Witness Printer preferences to default values
[2018-12-09 12:18:09,523 INFO  L177        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2018-12-09 12:18:09,523 INFO  L174        SettingsManager]: Resetting CDTParser preferences to default values
[2018-12-09 12:18:09,523 INFO  L177        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2018-12-09 12:18:09,523 INFO  L177        SettingsManager]: ReqParser provides no preferences, ignoring...
[2018-12-09 12:18:09,523 INFO  L174        SettingsManager]: Resetting SmtParser preferences to default values
[2018-12-09 12:18:09,524 INFO  L174        SettingsManager]: Resetting Witness Parser preferences to default values
[2018-12-09 12:18:09,524 INFO  L181        SettingsManager]: Finished resetting all preferences to default values...
[2018-12-09 12:18:09,524 INFO  L98         SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_a9a5aa5c-d948-44ee-a0e6-a3dba4b80134/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf
[2018-12-09 12:18:09,532 INFO  L110        SettingsManager]: Loading preferences was successful
[2018-12-09 12:18:09,532 INFO  L112        SettingsManager]: Preferences different from defaults after loading the file:
[2018-12-09 12:18:09,533 INFO  L131        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2018-12-09 12:18:09,533 INFO  L133        SettingsManager]:  * Create parallel compositions if possible=false
[2018-12-09 12:18:09,533 INFO  L133        SettingsManager]:  * Use SBE=true
[2018-12-09 12:18:09,533 INFO  L131        SettingsManager]: Preferences of BuchiAutomizer differ from their defaults:
[2018-12-09 12:18:09,533 INFO  L133        SettingsManager]:  * NCSB implementation=INTSET_LAZY3
[2018-12-09 12:18:09,533 INFO  L133        SettingsManager]:  * Use old map elimination=false
[2018-12-09 12:18:09,533 INFO  L133        SettingsManager]:  * Use external solver (rank synthesis)=false
[2018-12-09 12:18:09,533 INFO  L133        SettingsManager]:  * Use only trivial implications for array writes=true
[2018-12-09 12:18:09,533 INFO  L133        SettingsManager]:  * Rank analysis=LINEAR_WITH_GUESSES
[2018-12-09 12:18:09,534 INFO  L131        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2018-12-09 12:18:09,534 INFO  L133        SettingsManager]:  * sizeof long=4
[2018-12-09 12:18:09,534 INFO  L133        SettingsManager]:  * Check unreachability of error function in SV-COMP mode=false
[2018-12-09 12:18:09,534 INFO  L133        SettingsManager]:  * Overapproximate operations on floating types=true
[2018-12-09 12:18:09,534 INFO  L133        SettingsManager]:  * sizeof POINTER=4
[2018-12-09 12:18:09,534 INFO  L133        SettingsManager]:  * Check division by zero=IGNORE
[2018-12-09 12:18:09,534 INFO  L133        SettingsManager]:  * Pointer to allocated memory at dereference=ASSUME
[2018-12-09 12:18:09,534 INFO  L133        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=ASSUME
[2018-12-09 12:18:09,534 INFO  L133        SettingsManager]:  * Check array bounds for arrays that are off heap=ASSUME
[2018-12-09 12:18:09,534 INFO  L133        SettingsManager]:  * sizeof long double=12
[2018-12-09 12:18:09,534 INFO  L133        SettingsManager]:  * Check if freed pointer was valid=false
[2018-12-09 12:18:09,535 INFO  L133        SettingsManager]:  * Assume nondeterminstic values are in range=false
[2018-12-09 12:18:09,535 INFO  L133        SettingsManager]:  * Use constant arrays=true
[2018-12-09 12:18:09,535 INFO  L133        SettingsManager]:  * Pointer base address is valid at dereference=ASSUME
[2018-12-09 12:18:09,535 INFO  L131        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2018-12-09 12:18:09,535 INFO  L133        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2018-12-09 12:18:09,535 INFO  L133        SettingsManager]:  * To the following directory=/home/matthias/ultimate/dump
[2018-12-09 12:18:09,535 INFO  L131        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2018-12-09 12:18:09,535 INFO  L133        SettingsManager]:  * Trace refinement strategy=CAMEL
[2018-12-09 12:18:09,535 INFO  L133        SettingsManager]:  * Dump automata to the following directory=/home/matthias/ultimate/dump/auto
[2018-12-09 12:18:09,536 INFO  L131        SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2018-12-09 12:18:09,536 INFO  L133        SettingsManager]:  * TransformationType=MODULO_NEIGHBOR
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_a9a5aa5c-d948-44ee-a0e6-a3dba4b80134/bin-2019/uautomizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) )


Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 377e57d4a3daf9b967866e1410a183dc7f79915c
[2018-12-09 12:18:09,552 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2018-12-09 12:18:09,559 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2018-12-09 12:18:09,561 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2018-12-09 12:18:09,562 INFO  L271        PluginConnector]: Initializing CDTParser...
[2018-12-09 12:18:09,562 INFO  L276        PluginConnector]: CDTParser initialized
[2018-12-09 12:18:09,562 INFO  L418   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_a9a5aa5c-d948-44ee-a0e6-a3dba4b80134/bin-2019/uautomizer/../../sv-benchmarks/c/loops/nec11_false-unreach-call_false-termination.i
[2018-12-09 12:18:09,594 INFO  L221              CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a9a5aa5c-d948-44ee-a0e6-a3dba4b80134/bin-2019/uautomizer/data/8e328095c/6ae1734ded6a47f1b116f9a5fe197b33/FLAGc5f98b7dc
[2018-12-09 12:18:09,984 INFO  L307              CDTParser]: Found 1 translation units.
[2018-12-09 12:18:09,984 INFO  L161              CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_a9a5aa5c-d948-44ee-a0e6-a3dba4b80134/sv-benchmarks/c/loops/nec11_false-unreach-call_false-termination.i
[2018-12-09 12:18:09,987 INFO  L355              CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a9a5aa5c-d948-44ee-a0e6-a3dba4b80134/bin-2019/uautomizer/data/8e328095c/6ae1734ded6a47f1b116f9a5fe197b33/FLAGc5f98b7dc
[2018-12-09 12:18:09,995 INFO  L363              CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_a9a5aa5c-d948-44ee-a0e6-a3dba4b80134/bin-2019/uautomizer/data/8e328095c/6ae1734ded6a47f1b116f9a5fe197b33
[2018-12-09 12:18:09,997 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2018-12-09 12:18:09,998 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2018-12-09 12:18:09,998 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2018-12-09 12:18:09,999 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2018-12-09 12:18:10,001 INFO  L276        PluginConnector]: CACSL2BoogieTranslator initialized
[2018-12-09 12:18:10,001 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:18:09" (1/1) ...
[2018-12-09 12:18:10,003 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54724d61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:18:10, skipping insertion in model container
[2018-12-09 12:18:10,003 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:18:09" (1/1) ...
[2018-12-09 12:18:10,007 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2018-12-09 12:18:10,015 INFO  L176         MainTranslator]: Built tables and reachable declarations
[2018-12-09 12:18:10,099 INFO  L203          PostProcessor]: Analyzing one entry point: main
[2018-12-09 12:18:10,101 INFO  L191         MainTranslator]: Completed pre-run
[2018-12-09 12:18:10,109 INFO  L203          PostProcessor]: Analyzing one entry point: main
[2018-12-09 12:18:10,117 INFO  L195         MainTranslator]: Completed translation
[2018-12-09 12:18:10,117 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:18:10 WrapperNode
[2018-12-09 12:18:10,117 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2018-12-09 12:18:10,118 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2018-12-09 12:18:10,118 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2018-12-09 12:18:10,118 INFO  L276        PluginConnector]: Boogie Procedure Inliner initialized
[2018-12-09 12:18:10,123 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:18:10" (1/1) ...
[2018-12-09 12:18:10,125 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:18:10" (1/1) ...
[2018-12-09 12:18:10,136 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2018-12-09 12:18:10,136 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2018-12-09 12:18:10,136 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2018-12-09 12:18:10,136 INFO  L276        PluginConnector]: Boogie Preprocessor initialized
[2018-12-09 12:18:10,141 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:18:10" (1/1) ...
[2018-12-09 12:18:10,141 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:18:10" (1/1) ...
[2018-12-09 12:18:10,142 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:18:10" (1/1) ...
[2018-12-09 12:18:10,142 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:18:10" (1/1) ...
[2018-12-09 12:18:10,143 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:18:10" (1/1) ...
[2018-12-09 12:18:10,174 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:18:10" (1/1) ...
[2018-12-09 12:18:10,175 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:18:10" (1/1) ...
[2018-12-09 12:18:10,176 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2018-12-09 12:18:10,176 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2018-12-09 12:18:10,176 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2018-12-09 12:18:10,176 INFO  L276        PluginConnector]: RCFGBuilder initialized
[2018-12-09 12:18:10,177 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:18:10" (1/1) ...
No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a9a5aa5c-d948-44ee-a0e6-a3dba4b80134/bin-2019/uautomizer/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000
[2018-12-09 12:18:10,210 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2018-12-09 12:18:10,210 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2018-12-09 12:18:10,292 INFO  L275             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2018-12-09 12:18:10,292 INFO  L280             CfgBuilder]: Removed 7 assue(true) statements.
[2018-12-09 12:18:10,292 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:18:10 BoogieIcfgContainer
[2018-12-09 12:18:10,293 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2018-12-09 12:18:10,293 INFO  L113        PluginConnector]: ------------------------BuchiAutomizer----------------------------
[2018-12-09 12:18:10,293 INFO  L271        PluginConnector]: Initializing BuchiAutomizer...
[2018-12-09 12:18:10,296 INFO  L276        PluginConnector]: BuchiAutomizer initialized
[2018-12-09 12:18:10,296 INFO  L102         BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis
[2018-12-09 12:18:10,296 INFO  L185        PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 09.12 12:18:09" (1/3) ...
[2018-12-09 12:18:10,297 INFO  L205        PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5400750d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.12 12:18:10, skipping insertion in model container
[2018-12-09 12:18:10,297 INFO  L102         BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis
[2018-12-09 12:18:10,298 INFO  L185        PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:18:10" (2/3) ...
[2018-12-09 12:18:10,298 INFO  L205        PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5400750d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.12 12:18:10, skipping insertion in model container
[2018-12-09 12:18:10,298 INFO  L102         BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis
[2018-12-09 12:18:10,298 INFO  L185        PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:18:10" (3/3) ...
[2018-12-09 12:18:10,299 INFO  L375   chiAutomizerObserver]: Analyzing ICFG nec11_false-unreach-call_false-termination.i
[2018-12-09 12:18:10,342 INFO  L133   ementStrategyFactory]: Using default assertion order modulation
[2018-12-09 12:18:10,343 INFO  L374         BuchiCegarLoop]: Interprodecural is true
[2018-12-09 12:18:10,343 INFO  L375         BuchiCegarLoop]: Hoare is false
[2018-12-09 12:18:10,343 INFO  L376         BuchiCegarLoop]: Compute interpolants for ForwardPredicates
[2018-12-09 12:18:10,343 INFO  L377         BuchiCegarLoop]: Backedges is STRAIGHT_LINE
[2018-12-09 12:18:10,343 INFO  L378         BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2018-12-09 12:18:10,343 INFO  L379         BuchiCegarLoop]: Difference is false
[2018-12-09 12:18:10,343 INFO  L380         BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA
[2018-12-09 12:18:10,343 INFO  L383         BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop========
[2018-12-09 12:18:10,352 INFO  L72            BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states.
[2018-12-09 12:18:10,364 INFO  L131   ngComponentsAnalysis]: Automaton has 1 accepting balls. 3
[2018-12-09 12:18:10,364 INFO  L87            BuchiIsEmpty]: Finished buchiIsEmpty Result is false
[2018-12-09 12:18:10,364 INFO  L119           BuchiIsEmpty]: Starting construction of run
[2018-12-09 12:18:10,368 INFO  L866         BuchiCegarLoop]: Counterexample stem histogram [1]
[2018-12-09 12:18:10,368 INFO  L867         BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1]
[2018-12-09 12:18:10,368 INFO  L442         BuchiCegarLoop]: ======== Iteration 1============
[2018-12-09 12:18:10,368 INFO  L72            BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states.
[2018-12-09 12:18:10,369 INFO  L131   ngComponentsAnalysis]: Automaton has 1 accepting balls. 3
[2018-12-09 12:18:10,369 INFO  L87            BuchiIsEmpty]: Finished buchiIsEmpty Result is false
[2018-12-09 12:18:10,369 INFO  L119           BuchiIsEmpty]: Starting construction of run
[2018-12-09 12:18:10,369 INFO  L866         BuchiCegarLoop]: Counterexample stem histogram [1]
[2018-12-09 12:18:10,369 INFO  L867         BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1]
[2018-12-09 12:18:10,374 INFO  L794   eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~post1, main_~a~0, main_~len~0, main_~c~0, main_~i~0;havoc main_~a~0;main_~len~0 := 0;main_~c~0 := main_#t~nondet0;havoc main_#t~nondet0;havoc main_~i~0; 7#L19-2true 
[2018-12-09 12:18:10,374 INFO  L796   eck$LassoCheckResult]: Loop: 7#L19-2true assume !!(0 != main_~c~0 % 256); 3#L21true assume 4 == main_~len~0;main_~len~0 := 0; 11#L21-2true assume 0 <= main_~len~0 && main_~len~0 < 5;main_~a~0 := main_~a~0[main_~len~0 := 0];main_#t~post1 := main_~len~0;main_~len~0 := 1 + main_#t~post1;havoc main_#t~post1; 7#L19-2true 
[2018-12-09 12:18:10,378 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-12-09 12:18:10,378 INFO  L82        PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times
[2018-12-09 12:18:10,379 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-12-09 12:18:10,380 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-12-09 12:18:10,410 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-09 12:18:10,410 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-12-09 12:18:10,410 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-09 12:18:10,426 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2018-12-09 12:18:10,427 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2018-12-09 12:18:10,439 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-12-09 12:18:10,439 INFO  L82        PathProgramCache]: Analyzing trace with hash 39821, now seen corresponding path program 1 times
[2018-12-09 12:18:10,439 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-12-09 12:18:10,439 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-12-09 12:18:10,440 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-09 12:18:10,440 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-12-09 12:18:10,440 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-09 12:18:10,448 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2018-12-09 12:18:10,451 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2018-12-09 12:18:10,453 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-12-09 12:18:10,453 INFO  L82        PathProgramCache]: Analyzing trace with hash 963342, now seen corresponding path program 1 times
[2018-12-09 12:18:10,453 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-12-09 12:18:10,454 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-12-09 12:18:10,454 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-09 12:18:10,454 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-12-09 12:18:10,454 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-09 12:18:10,457 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-12-09 12:18:10,485 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-12-09 12:18:10,487 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-12-09 12:18:10,487 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2018-12-09 12:18:10,541 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2018-12-09 12:18:10,542 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-12-09 12:18:10,543 INFO  L87              Difference]: Start difference. First operand 11 states. Second operand 3 states.
[2018-12-09 12:18:10,556 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-12-09 12:18:10,556 INFO  L93              Difference]: Finished difference Result 21 states and 22 transitions.
[2018-12-09 12:18:10,556 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2018-12-09 12:18:10,557 INFO  L82        GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 22 transitions.
[2018-12-09 12:18:10,558 INFO  L131   ngComponentsAnalysis]: Automaton has 1 accepting balls. 4
[2018-12-09 12:18:10,560 INFO  L88        GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 7 states and 8 transitions.
[2018-12-09 12:18:10,561 INFO  L87         BuchiClosureNwa]: Accepting states before buchiClosure: 7
[2018-12-09 12:18:10,561 INFO  L106        BuchiClosureNwa]: Accepting states after buchiClosure: 7
[2018-12-09 12:18:10,561 INFO  L73         IsDeterministic]: Start isDeterministic. Operand 7 states and 8 transitions.
[2018-12-09 12:18:10,562 INFO  L80         IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2018-12-09 12:18:10,562 INFO  L705         BuchiCegarLoop]: Abstraction has 7 states and 8 transitions.
[2018-12-09 12:18:10,572 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7 states and 8 transitions.
[2018-12-09 12:18:10,577 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6.
[2018-12-09 12:18:10,577 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 6 states.
[2018-12-09 12:18:10,577 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions.
[2018-12-09 12:18:10,578 INFO  L728         BuchiCegarLoop]: Abstraction has 6 states and 7 transitions.
[2018-12-09 12:18:10,578 INFO  L608         BuchiCegarLoop]: Abstraction has 6 states and 7 transitions.
[2018-12-09 12:18:10,578 INFO  L442         BuchiCegarLoop]: ======== Iteration 2============
[2018-12-09 12:18:10,578 INFO  L72            BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 7 transitions.
[2018-12-09 12:18:10,579 INFO  L131   ngComponentsAnalysis]: Automaton has 1 accepting balls. 3
[2018-12-09 12:18:10,579 INFO  L87            BuchiIsEmpty]: Finished buchiIsEmpty Result is false
[2018-12-09 12:18:10,579 INFO  L119           BuchiIsEmpty]: Starting construction of run
[2018-12-09 12:18:10,579 INFO  L866         BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1]
[2018-12-09 12:18:10,579 INFO  L867         BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1]
[2018-12-09 12:18:10,580 INFO  L794   eck$LassoCheckResult]: Stem: 45#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~post1, main_~a~0, main_~len~0, main_~c~0, main_~i~0;havoc main_~a~0;main_~len~0 := 0;main_~c~0 := main_#t~nondet0;havoc main_#t~nondet0;havoc main_~i~0; 46#L19-2 assume !!(0 != main_~c~0 % 256); 43#L21 assume !(4 == main_~len~0); 44#L21-2 
[2018-12-09 12:18:10,580 INFO  L796   eck$LassoCheckResult]: Loop: 44#L21-2 assume 0 <= main_~len~0 && main_~len~0 < 5;main_~a~0 := main_~a~0[main_~len~0 := 0];main_#t~post1 := main_~len~0;main_~len~0 := 1 + main_#t~post1;havoc main_#t~post1; 47#L19-2 assume !!(0 != main_~c~0 % 256); 48#L21 assume 4 == main_~len~0;main_~len~0 := 0; 44#L21-2 
[2018-12-09 12:18:10,580 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-12-09 12:18:10,580 INFO  L82        PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times
[2018-12-09 12:18:10,580 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-12-09 12:18:10,580 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-12-09 12:18:10,581 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-09 12:18:10,581 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-12-09 12:18:10,581 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-09 12:18:10,583 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2018-12-09 12:18:10,585 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2018-12-09 12:18:10,586 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-12-09 12:18:10,586 INFO  L82        PathProgramCache]: Analyzing trace with hash 46451, now seen corresponding path program 2 times
[2018-12-09 12:18:10,586 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-12-09 12:18:10,586 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-12-09 12:18:10,587 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-09 12:18:10,587 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-12-09 12:18:10,587 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-09 12:18:10,590 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2018-12-09 12:18:10,593 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2018-12-09 12:18:10,594 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-12-09 12:18:10,594 INFO  L82        PathProgramCache]: Analyzing trace with hash 925831567, now seen corresponding path program 1 times
[2018-12-09 12:18:10,595 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-12-09 12:18:10,595 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-12-09 12:18:10,595 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-09 12:18:10,595 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-12-09 12:18:10,596 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-09 12:18:10,599 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-12-09 12:18:10,611 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-12-09 12:18:10,611 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-12-09 12:18:10,611 INFO  L223   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a9a5aa5c-d948-44ee-a0e6-a3dba4b80134/bin-2019/uautomizer/z3
Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-12-09 12:18:10,617 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-12-09 12:18:10,623 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-12-09 12:18:10,625 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-12-09 12:18:10,633 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-12-09 12:18:10,650 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-12-09 12:18:10,650 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2
[2018-12-09 12:18:10,677 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-12-09 12:18:10,677 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-12-09 12:18:10,678 INFO  L87              Difference]: Start difference. First operand 6 states and 7 transitions. cyclomatic complexity: 2 Second operand 4 states.
[2018-12-09 12:18:10,688 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-12-09 12:18:10,688 INFO  L93              Difference]: Finished difference Result 10 states and 11 transitions.
[2018-12-09 12:18:10,688 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2018-12-09 12:18:10,688 INFO  L82        GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 11 transitions.
[2018-12-09 12:18:10,689 INFO  L131   ngComponentsAnalysis]: Automaton has 1 accepting balls. 7
[2018-12-09 12:18:10,689 INFO  L88        GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 10 states and 11 transitions.
[2018-12-09 12:18:10,689 INFO  L87         BuchiClosureNwa]: Accepting states before buchiClosure: 10
[2018-12-09 12:18:10,689 INFO  L106        BuchiClosureNwa]: Accepting states after buchiClosure: 10
[2018-12-09 12:18:10,689 INFO  L73         IsDeterministic]: Start isDeterministic. Operand 10 states and 11 transitions.
[2018-12-09 12:18:10,690 INFO  L80         IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2018-12-09 12:18:10,690 INFO  L705         BuchiCegarLoop]: Abstraction has 10 states and 11 transitions.
[2018-12-09 12:18:10,690 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10 states and 11 transitions.
[2018-12-09 12:18:10,690 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9.
[2018-12-09 12:18:10,690 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 9 states.
[2018-12-09 12:18:10,690 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions.
[2018-12-09 12:18:10,690 INFO  L728         BuchiCegarLoop]: Abstraction has 9 states and 10 transitions.
[2018-12-09 12:18:10,691 INFO  L608         BuchiCegarLoop]: Abstraction has 9 states and 10 transitions.
[2018-12-09 12:18:10,691 INFO  L442         BuchiCegarLoop]: ======== Iteration 3============
[2018-12-09 12:18:10,691 INFO  L72            BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 10 transitions.
[2018-12-09 12:18:10,691 INFO  L131   ngComponentsAnalysis]: Automaton has 1 accepting balls. 6
[2018-12-09 12:18:10,691 INFO  L87            BuchiIsEmpty]: Finished buchiIsEmpty Result is false
[2018-12-09 12:18:10,691 INFO  L119           BuchiIsEmpty]: Starting construction of run
[2018-12-09 12:18:10,691 INFO  L866         BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1]
[2018-12-09 12:18:10,691 INFO  L867         BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1]
[2018-12-09 12:18:10,691 INFO  L794   eck$LassoCheckResult]: Stem: 85#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~post1, main_~a~0, main_~len~0, main_~c~0, main_~i~0;havoc main_~a~0;main_~len~0 := 0;main_~c~0 := main_#t~nondet0;havoc main_#t~nondet0;havoc main_~i~0; 86#L19-2 assume !!(0 != main_~c~0 % 256); 91#L21 assume !(4 == main_~len~0); 88#L21-2 
[2018-12-09 12:18:10,691 INFO  L796   eck$LassoCheckResult]: Loop: 88#L21-2 assume 0 <= main_~len~0 && main_~len~0 < 5;main_~a~0 := main_~a~0[main_~len~0 := 0];main_#t~post1 := main_~len~0;main_~len~0 := 1 + main_#t~post1;havoc main_#t~post1; 87#L19-2 assume !!(0 != main_~c~0 % 256); 83#L21 assume !(4 == main_~len~0); 84#L21-2 assume 0 <= main_~len~0 && main_~len~0 < 5;main_~a~0 := main_~a~0[main_~len~0 := 0];main_#t~post1 := main_~len~0;main_~len~0 := 1 + main_#t~post1;havoc main_#t~post1; 90#L19-2 assume !!(0 != main_~c~0 % 256); 89#L21 assume 4 == main_~len~0;main_~len~0 := 0; 88#L21-2 
[2018-12-09 12:18:10,692 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-12-09 12:18:10,692 INFO  L82        PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 2 times
[2018-12-09 12:18:10,692 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-12-09 12:18:10,692 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-12-09 12:18:10,692 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-09 12:18:10,692 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-12-09 12:18:10,692 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-09 12:18:10,694 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2018-12-09 12:18:10,695 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2018-12-09 12:18:10,696 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-12-09 12:18:10,696 INFO  L82        PathProgramCache]: Analyzing trace with hash 1383897983, now seen corresponding path program 1 times
[2018-12-09 12:18:10,696 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-12-09 12:18:10,696 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-12-09 12:18:10,697 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-09 12:18:10,697 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-12-09 12:18:10,697 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-09 12:18:10,700 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2018-12-09 12:18:10,703 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2018-12-09 12:18:10,704 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-12-09 12:18:10,704 INFO  L82        PathProgramCache]: Analyzing trace with hash -831686173, now seen corresponding path program 2 times
[2018-12-09 12:18:10,704 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-12-09 12:18:10,704 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-12-09 12:18:10,705 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-09 12:18:10,705 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-12-09 12:18:10,705 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-09 12:18:10,708 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-12-09 12:18:10,734 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-12-09 12:18:10,734 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-12-09 12:18:10,734 INFO  L223   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a9a5aa5c-d948-44ee-a0e6-a3dba4b80134/bin-2019/uautomizer/z3
Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-12-09 12:18:10,742 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-12-09 12:18:10,748 INFO  L249   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-12-09 12:18:10,748 INFO  L250   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-12-09 12:18:10,749 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-12-09 12:18:10,752 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-12-09 12:18:10,775 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-12-09 12:18:10,775 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3
[2018-12-09 12:18:10,812 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2018-12-09 12:18:10,812 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20
[2018-12-09 12:18:10,812 INFO  L87              Difference]: Start difference. First operand 9 states and 10 transitions. cyclomatic complexity: 2 Second operand 5 states.
[2018-12-09 12:18:10,821 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-12-09 12:18:10,821 INFO  L93              Difference]: Finished difference Result 13 states and 14 transitions.
[2018-12-09 12:18:10,821 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2018-12-09 12:18:10,821 INFO  L82        GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 14 transitions.
[2018-12-09 12:18:10,821 INFO  L131   ngComponentsAnalysis]: Automaton has 1 accepting balls. 10
[2018-12-09 12:18:10,822 INFO  L88        GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 13 states and 14 transitions.
[2018-12-09 12:18:10,822 INFO  L87         BuchiClosureNwa]: Accepting states before buchiClosure: 13
[2018-12-09 12:18:10,822 INFO  L106        BuchiClosureNwa]: Accepting states after buchiClosure: 13
[2018-12-09 12:18:10,822 INFO  L73         IsDeterministic]: Start isDeterministic. Operand 13 states and 14 transitions.
[2018-12-09 12:18:10,822 INFO  L80         IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2018-12-09 12:18:10,822 INFO  L705         BuchiCegarLoop]: Abstraction has 13 states and 14 transitions.
[2018-12-09 12:18:10,822 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13 states and 14 transitions.
[2018-12-09 12:18:10,823 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12.
[2018-12-09 12:18:10,823 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 12 states.
[2018-12-09 12:18:10,823 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions.
[2018-12-09 12:18:10,823 INFO  L728         BuchiCegarLoop]: Abstraction has 12 states and 13 transitions.
[2018-12-09 12:18:10,823 INFO  L608         BuchiCegarLoop]: Abstraction has 12 states and 13 transitions.
[2018-12-09 12:18:10,823 INFO  L442         BuchiCegarLoop]: ======== Iteration 4============
[2018-12-09 12:18:10,823 INFO  L72            BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 13 transitions.
[2018-12-09 12:18:10,824 INFO  L131   ngComponentsAnalysis]: Automaton has 1 accepting balls. 9
[2018-12-09 12:18:10,824 INFO  L87            BuchiIsEmpty]: Finished buchiIsEmpty Result is false
[2018-12-09 12:18:10,824 INFO  L119           BuchiIsEmpty]: Starting construction of run
[2018-12-09 12:18:10,824 INFO  L866         BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1]
[2018-12-09 12:18:10,824 INFO  L867         BuchiCegarLoop]: Counterexample loop histogram [3, 3, 2, 1]
[2018-12-09 12:18:10,824 INFO  L794   eck$LassoCheckResult]: Stem: 141#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~post1, main_~a~0, main_~len~0, main_~c~0, main_~i~0;havoc main_~a~0;main_~len~0 := 0;main_~c~0 := main_#t~nondet0;havoc main_#t~nondet0;havoc main_~i~0; 142#L19-2 assume !!(0 != main_~c~0 % 256); 150#L21 assume !(4 == main_~len~0); 145#L21-2 
[2018-12-09 12:18:10,824 INFO  L796   eck$LassoCheckResult]: Loop: 145#L21-2 assume 0 <= main_~len~0 && main_~len~0 < 5;main_~a~0 := main_~a~0[main_~len~0 := 0];main_#t~post1 := main_~len~0;main_~len~0 := 1 + main_#t~post1;havoc main_#t~post1; 143#L19-2 assume !!(0 != main_~c~0 % 256); 144#L21 assume !(4 == main_~len~0); 148#L21-2 assume 0 <= main_~len~0 && main_~len~0 < 5;main_~a~0 := main_~a~0[main_~len~0 := 0];main_#t~post1 := main_~len~0;main_~len~0 := 1 + main_#t~post1;havoc main_#t~post1; 149#L19-2 assume !!(0 != main_~c~0 % 256); 139#L21 assume !(4 == main_~len~0); 140#L21-2 assume 0 <= main_~len~0 && main_~len~0 < 5;main_~a~0 := main_~a~0[main_~len~0 := 0];main_#t~post1 := main_~len~0;main_~len~0 := 1 + main_#t~post1;havoc main_#t~post1; 147#L19-2 assume !!(0 != main_~c~0 % 256); 146#L21 assume 4 == main_~len~0;main_~len~0 := 0; 145#L21-2 
[2018-12-09 12:18:10,824 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-12-09 12:18:10,824 INFO  L82        PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 3 times
[2018-12-09 12:18:10,824 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-12-09 12:18:10,824 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-12-09 12:18:10,825 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-09 12:18:10,825 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-12-09 12:18:10,825 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-09 12:18:10,826 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2018-12-09 12:18:10,828 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2018-12-09 12:18:10,828 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-12-09 12:18:10,828 INFO  L82        PathProgramCache]: Analyzing trace with hash 313813491, now seen corresponding path program 2 times
[2018-12-09 12:18:10,829 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-12-09 12:18:10,829 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-12-09 12:18:10,829 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-09 12:18:10,829 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-12-09 12:18:10,829 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-09 12:18:10,833 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2018-12-09 12:18:10,836 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2018-12-09 12:18:10,837 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-12-09 12:18:10,837 INFO  L82        PathProgramCache]: Analyzing trace with hash 903627023, now seen corresponding path program 3 times
[2018-12-09 12:18:10,837 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-12-09 12:18:10,837 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-12-09 12:18:10,838 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-09 12:18:10,838 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-12-09 12:18:10,838 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-09 12:18:10,841 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-12-09 12:18:10,863 INFO  L134       CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-12-09 12:18:10,863 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-12-09 12:18:10,863 INFO  L223   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a9a5aa5c-d948-44ee-a0e6-a3dba4b80134/bin-2019/uautomizer/z3
Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-12-09 12:18:10,869 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-12-09 12:18:10,875 INFO  L249   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2018-12-09 12:18:10,875 INFO  L250   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-12-09 12:18:10,875 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-12-09 12:18:10,878 INFO  L134       CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-12-09 12:18:10,892 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-12-09 12:18:10,892 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4
[2018-12-09 12:18:10,941 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2018-12-09 12:18:10,942 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30
[2018-12-09 12:18:10,942 INFO  L87              Difference]: Start difference. First operand 12 states and 13 transitions. cyclomatic complexity: 2 Second operand 6 states.
[2018-12-09 12:18:10,957 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-12-09 12:18:10,957 INFO  L93              Difference]: Finished difference Result 16 states and 17 transitions.
[2018-12-09 12:18:10,957 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2018-12-09 12:18:10,958 INFO  L82        GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 17 transitions.
[2018-12-09 12:18:10,958 INFO  L131   ngComponentsAnalysis]: Automaton has 1 accepting balls. 13
[2018-12-09 12:18:10,958 INFO  L88        GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 16 states and 17 transitions.
[2018-12-09 12:18:10,959 INFO  L87         BuchiClosureNwa]: Accepting states before buchiClosure: 16
[2018-12-09 12:18:10,959 INFO  L106        BuchiClosureNwa]: Accepting states after buchiClosure: 16
[2018-12-09 12:18:10,959 INFO  L73         IsDeterministic]: Start isDeterministic. Operand 16 states and 17 transitions.
[2018-12-09 12:18:10,959 INFO  L80         IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2018-12-09 12:18:10,959 INFO  L705         BuchiCegarLoop]: Abstraction has 16 states and 17 transitions.
[2018-12-09 12:18:10,959 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 16 states and 17 transitions.
[2018-12-09 12:18:10,960 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15.
[2018-12-09 12:18:10,960 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 15 states.
[2018-12-09 12:18:10,960 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions.
[2018-12-09 12:18:10,961 INFO  L728         BuchiCegarLoop]: Abstraction has 15 states and 16 transitions.
[2018-12-09 12:18:10,961 INFO  L608         BuchiCegarLoop]: Abstraction has 15 states and 16 transitions.
[2018-12-09 12:18:10,961 INFO  L442         BuchiCegarLoop]: ======== Iteration 5============
[2018-12-09 12:18:10,961 INFO  L72            BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 16 transitions.
[2018-12-09 12:18:10,961 INFO  L131   ngComponentsAnalysis]: Automaton has 1 accepting balls. 12
[2018-12-09 12:18:10,961 INFO  L87            BuchiIsEmpty]: Finished buchiIsEmpty Result is false
[2018-12-09 12:18:10,961 INFO  L119           BuchiIsEmpty]: Starting construction of run
[2018-12-09 12:18:10,962 INFO  L866         BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1]
[2018-12-09 12:18:10,962 INFO  L867         BuchiCegarLoop]: Counterexample loop histogram [4, 4, 3, 1]
[2018-12-09 12:18:10,962 INFO  L794   eck$LassoCheckResult]: Stem: 213#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~post1, main_~a~0, main_~len~0, main_~c~0, main_~i~0;havoc main_~a~0;main_~len~0 := 0;main_~c~0 := main_#t~nondet0;havoc main_#t~nondet0;havoc main_~i~0; 214#L19-2 assume !!(0 != main_~c~0 % 256); 211#L21 assume !(4 == main_~len~0); 212#L21-2 
[2018-12-09 12:18:10,962 INFO  L796   eck$LassoCheckResult]: Loop: 212#L21-2 assume 0 <= main_~len~0 && main_~len~0 < 5;main_~a~0 := main_~a~0[main_~len~0 := 0];main_#t~post1 := main_~len~0;main_~len~0 := 1 + main_#t~post1;havoc main_#t~post1; 215#L19-2 assume !!(0 != main_~c~0 % 256); 225#L21 assume !(4 == main_~len~0); 224#L21-2 assume 0 <= main_~len~0 && main_~len~0 < 5;main_~a~0 := main_~a~0[main_~len~0 := 0];main_#t~post1 := main_~len~0;main_~len~0 := 1 + main_#t~post1;havoc main_#t~post1; 223#L19-2 assume !!(0 != main_~c~0 % 256); 222#L21 assume !(4 == main_~len~0); 221#L21-2 assume 0 <= main_~len~0 && main_~len~0 < 5;main_~a~0 := main_~a~0[main_~len~0 := 0];main_#t~post1 := main_~len~0;main_~len~0 := 1 + main_#t~post1;havoc main_#t~post1; 220#L19-2 assume !!(0 != main_~c~0 % 256); 219#L21 assume !(4 == main_~len~0); 217#L21-2 assume 0 <= main_~len~0 && main_~len~0 < 5;main_~a~0 := main_~a~0[main_~len~0 := 0];main_#t~post1 := main_~len~0;main_~len~0 := 1 + main_#t~post1;havoc main_#t~post1; 218#L19-2 assume !!(0 != main_~c~0 % 256); 216#L21 assume 4 == main_~len~0;main_~len~0 := 0; 212#L21-2 
[2018-12-09 12:18:10,962 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-12-09 12:18:10,962 INFO  L82        PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 4 times
[2018-12-09 12:18:10,962 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-12-09 12:18:10,962 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-12-09 12:18:10,963 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-09 12:18:10,963 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-12-09 12:18:10,963 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-09 12:18:10,964 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2018-12-09 12:18:10,965 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2018-12-09 12:18:10,966 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-12-09 12:18:10,966 INFO  L82        PathProgramCache]: Analyzing trace with hash -1326016769, now seen corresponding path program 3 times
[2018-12-09 12:18:10,966 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-12-09 12:18:10,966 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-12-09 12:18:10,966 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-09 12:18:10,966 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-12-09 12:18:10,966 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-09 12:18:10,970 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2018-12-09 12:18:10,974 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2018-12-09 12:18:10,976 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-12-09 12:18:10,976 INFO  L82        PathProgramCache]: Analyzing trace with hash -902292893, now seen corresponding path program 4 times
[2018-12-09 12:18:10,976 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-12-09 12:18:10,976 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-12-09 12:18:10,977 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-09 12:18:10,977 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-12-09 12:18:10,977 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-12-09 12:18:10,982 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2018-12-09 12:18:10,986 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2018-12-09 12:18:11,083 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 09.12 12:18:11 BoogieIcfgContainer
[2018-12-09 12:18:11,083 INFO  L132        PluginConnector]: ------------------------ END BuchiAutomizer----------------------------
[2018-12-09 12:18:11,084 INFO  L113        PluginConnector]: ------------------------Witness Printer----------------------------
[2018-12-09 12:18:11,084 INFO  L271        PluginConnector]: Initializing Witness Printer...
[2018-12-09 12:18:11,084 INFO  L276        PluginConnector]: Witness Printer initialized
[2018-12-09 12:18:11,084 INFO  L185        PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:18:10" (3/4) ...
[2018-12-09 12:18:11,086 INFO  L141         WitnessPrinter]: Generating witness for non-termination counterexample
[2018-12-09 12:18:11,113 INFO  L145         WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_a9a5aa5c-d948-44ee-a0e6-a3dba4b80134/bin-2019/uautomizer/witness.graphml
[2018-12-09 12:18:11,113 INFO  L132        PluginConnector]: ------------------------ END Witness Printer----------------------------
[2018-12-09 12:18:11,114 INFO  L168              Benchmark]: Toolchain (without parser) took 1116.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 954.4 MB in the beginning and 996.9 MB in the end (delta: -42.5 MB). Peak memory consumption was 107.9 MB. Max. memory is 11.5 GB.
[2018-12-09 12:18:11,115 INFO  L168              Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB.
[2018-12-09 12:18:11,115 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 118.87 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 942.6 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB.
[2018-12-09 12:18:11,115 INFO  L168              Benchmark]: Boogie Procedure Inliner took 18.20 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB.
[2018-12-09 12:18:11,115 INFO  L168              Benchmark]: Boogie Preprocessor took 39.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 942.6 MB in the beginning and 1.1 GB in the end (delta: -206.6 MB). Peak memory consumption was 15.8 MB. Max. memory is 11.5 GB.
[2018-12-09 12:18:11,116 INFO  L168              Benchmark]: RCFGBuilder took 116.73 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB.
[2018-12-09 12:18:11,116 INFO  L168              Benchmark]: BuchiAutomizer took 790.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 996.9 MB in the end (delta: 137.8 MB). Peak memory consumption was 137.8 MB. Max. memory is 11.5 GB.
[2018-12-09 12:18:11,116 INFO  L168              Benchmark]: Witness Printer took 29.63 ms. Allocated memory is still 1.2 GB. Free memory is still 996.9 MB. There was no memory consumed. Max. memory is 11.5 GB.
[2018-12-09 12:18:11,118 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB.
 * CACSL2BoogieTranslator took 118.87 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 942.6 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB.
 * Boogie Procedure Inliner took 18.20 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB.
 * Boogie Preprocessor took 39.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 942.6 MB in the beginning and 1.1 GB in the end (delta: -206.6 MB). Peak memory consumption was 15.8 MB. Max. memory is 11.5 GB.
 * RCFGBuilder took 116.73 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB.
 * BuchiAutomizer took 790.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 996.9 MB in the end (delta: 137.8 MB). Peak memory consumption was 137.8 MB. Max. memory is 11.5 GB.
 * Witness Printer took 29.63 ms. Allocated memory is still 1.2 GB. Free memory is still 996.9 MB. There was no memory consumed. Max. memory is 11.5 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - StatisticsResult: Constructed decomposition of program
    Your program was decomposed into 4 terminating modules (4 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.4 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 15 locations.
  - StatisticsResult: Timing statistics
    BüchiAutomizer plugin needed 0.7s and 5 iterations.  TraceHistogramMax:4. Analysis of lassos took 0.6s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 4. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 15 states and ocurred in iteration 4.	Nontrivial modules had stage [0, 0, 0, 0, 0].	InterpolantCoveringCapabilityFinite: 0/0	InterpolantCoveringCapabilityBuchi: 0/0	HoareTripleCheckerStatistics: 18 SDtfs, 17 SDslu, 16 SDs, 0 SdLazy, 30 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time	LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc4 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0	LassoNonterminationAnalysisSatUnbounded: 0	LassoNonterminationAnalysisUnsat: 0	LassoNonterminationAnalysisUnknown: 0	LassoNonterminationAnalysisTime: 0.0s	
  - TerminationAnalysisResult: Nontermination possible
    Buchi Automizer proved that your program is nonterminating for some inputs
  - FixpointNonTerminationResult [Line: 19]: Nontermination argument in form of an infinite program execution.
    Nontermination argument in form of an infinite execution
State at position 0 is
{}
State at position 1 is
{len=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@70fc1b8d=0, \result=0, c=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@4de1c8da=0, i=0}
  - StatisticsResult: NonterminationArgumentStatistics
    Fixpoint
  - NonterminatingLassoResult [Line: 21]: Nonterminating execution
    Found a nonterminating execution for the following lasso shaped sequence of statements.
Stem:
[L13]              int a[5];
[L14]              int len=0;
[L15]              _Bool c=__VERIFIER_nondet_bool();
[L16]              int i;
[L19]  COND TRUE   \read(c)
[L21]  COND FALSE  !(len==4)
Loop:
[L24]  EXPR        a[len]
[L24]              a[len]=0
[L26]              len++
[L19]  COND TRUE   \read(c)
[L21]  COND FALSE  !(len==4)
[L24]  EXPR        a[len]
[L24]              a[len]=0
[L26]              len++
[L19]  COND TRUE   \read(c)
[L21]  COND FALSE  !(len==4)
[L24]  EXPR        a[len]
[L24]              a[len]=0
[L26]              len++
[L19]  COND TRUE   \read(c)
[L21]  COND FALSE  !(len==4)
[L24]  EXPR        a[len]
[L24]              a[len]=0
[L26]              len++
[L19]  COND TRUE   \read(c)
[L21]  COND TRUE   len==4
[L22]              len =0
End of lasso representation.
RESULT: Ultimate proved your program to be incorrect!
Received shutdown request...