./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-invgen/half_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_479895bc-1c37-4141-818f-8c4a7f843182/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_479895bc-1c37-4141-818f-8c4a7f843182/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_479895bc-1c37-4141-818f-8c4a7f843182/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_479895bc-1c37-4141-818f-8c4a7f843182/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-invgen/half_2.i -s /tmp/vcloud-vcloud-master/worker/working_dir_479895bc-1c37-4141-818f-8c4a7f843182/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_479895bc-1c37-4141-818f-8c4a7f843182/bin/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 ca10e259bac305ecd55fc4a34d201bc0894aa533 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 08:55:46,898 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:55:46,900 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:55:46,908 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:55:46,908 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:55:46,909 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:55:46,910 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:55:46,911 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:55:46,912 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:55:46,913 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:55:46,913 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:55:46,914 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:55:46,915 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:55:46,915 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:55:46,916 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:55:46,917 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:55:46,917 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:55:46,918 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:55:46,919 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:55:46,921 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:55:46,926 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:55:46,927 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:55:46,928 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:55:46,928 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:55:46,931 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:55:46,931 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:55:46,932 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:55:46,932 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:55:46,933 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:55:46,933 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:55:46,934 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:55:46,934 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:55:46,935 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:55:46,935 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:55:46,936 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:55:46,936 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:55:46,937 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:55:46,937 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:55:46,937 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:55:46,938 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:55:46,939 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:55:46,939 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_479895bc-1c37-4141-818f-8c4a7f843182/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-10-22 08:55:46,951 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:55:46,951 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:55:46,952 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:55:46,953 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:55:46,953 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:55:46,953 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-10-22 08:55:46,953 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-10-22 08:55:46,953 INFO L138 SettingsManager]: * Use old map elimination=false [2019-10-22 08:55:46,953 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-10-22 08:55:46,954 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-10-22 08:55:46,954 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-10-22 08:55:46,954 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:55:46,954 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:55:46,954 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 08:55:46,954 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:55:46,955 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:55:46,955 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:55:46,955 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-10-22 08:55:46,955 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-10-22 08:55:46,955 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-10-22 08:55:46,955 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:55:46,955 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:55:46,956 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-10-22 08:55:46,956 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:55:46,956 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-10-22 08:55:46,956 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:55:46,956 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:55:46,956 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-10-22 08:55:46,956 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:55:46,957 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:55:46,957 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-10-22 08:55:46,957 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-10-22 08:55:46,958 INFO L138 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_479895bc-1c37-4141-818f-8c4a7f843182/bin/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 -> ca10e259bac305ecd55fc4a34d201bc0894aa533 [2019-10-22 08:55:46,982 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:55:46,992 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:55:46,998 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:55:46,999 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:55:47,000 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:55:47,000 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_479895bc-1c37-4141-818f-8c4a7f843182/bin/uautomizer/../../sv-benchmarks/c/loop-invgen/half_2.i [2019-10-22 08:55:47,057 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_479895bc-1c37-4141-818f-8c4a7f843182/bin/uautomizer/data/87f376f40/87d50e09c78a44a9b009e8c2a2b7ccba/FLAGb58683be0 [2019-10-22 08:55:47,452 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:55:47,453 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_479895bc-1c37-4141-818f-8c4a7f843182/sv-benchmarks/c/loop-invgen/half_2.i [2019-10-22 08:55:47,458 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_479895bc-1c37-4141-818f-8c4a7f843182/bin/uautomizer/data/87f376f40/87d50e09c78a44a9b009e8c2a2b7ccba/FLAGb58683be0 [2019-10-22 08:55:47,472 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_479895bc-1c37-4141-818f-8c4a7f843182/bin/uautomizer/data/87f376f40/87d50e09c78a44a9b009e8c2a2b7ccba [2019-10-22 08:55:47,475 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:55:47,476 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:55:47,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:55:47,477 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:55:47,480 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:55:47,480 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:55:47" (1/1) ... [2019-10-22 08:55:47,483 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76172a49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:47, skipping insertion in model container [2019-10-22 08:55:47,483 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:55:47" (1/1) ... [2019-10-22 08:55:47,489 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:55:47,502 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:55:47,641 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:55:47,651 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:55:47,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:55:47,736 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:55:47,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:47 WrapperNode [2019-10-22 08:55:47,737 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:55:47,738 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:55:47,738 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:55:47,738 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:55:47,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:47" (1/1) ... [2019-10-22 08:55:47,751 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:47" (1/1) ... [2019-10-22 08:55:47,764 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:55:47,764 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:55:47,764 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:55:47,764 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:55:47,773 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:47" (1/1) ... [2019-10-22 08:55:47,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:47" (1/1) ... [2019-10-22 08:55:47,773 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:47" (1/1) ... [2019-10-22 08:55:47,774 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:47" (1/1) ... [2019-10-22 08:55:47,775 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:47" (1/1) ... [2019-10-22 08:55:47,780 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:47" (1/1) ... [2019-10-22 08:55:47,780 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:47" (1/1) ... [2019-10-22 08:55:47,782 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:55:47,782 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:55:47,782 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:55:47,782 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:55:47,783 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_479895bc-1c37-4141-818f-8c4a7f843182/bin/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 [2019-10-22 08:55:47,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:55:47,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:55:47,951 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:55:47,952 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-10-22 08:55:47,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:47 BoogieIcfgContainer [2019-10-22 08:55:47,953 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:55:47,954 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-10-22 08:55:47,954 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-10-22 08:55:47,957 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-10-22 08:55:47,958 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:55:47,958 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.10 08:55:47" (1/3) ... [2019-10-22 08:55:47,959 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2f224d59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:55:47, skipping insertion in model container [2019-10-22 08:55:47,959 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:55:47,959 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:47" (2/3) ... [2019-10-22 08:55:47,960 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2f224d59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:55:47, skipping insertion in model container [2019-10-22 08:55:47,960 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:55:47,960 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:47" (3/3) ... [2019-10-22 08:55:47,962 INFO L371 chiAutomizerObserver]: Analyzing ICFG half_2.i [2019-10-22 08:55:47,995 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-10-22 08:55:47,995 INFO L357 BuchiCegarLoop]: Hoare is false [2019-10-22 08:55:47,995 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-10-22 08:55:47,995 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:55:47,996 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:55:47,996 INFO L361 BuchiCegarLoop]: Difference is false [2019-10-22 08:55:47,996 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:55:47,996 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-10-22 08:55:48,007 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2019-10-22 08:55:48,023 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2019-10-22 08:55:48,023 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:55:48,023 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:55:48,029 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-10-22 08:55:48,029 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-10-22 08:55:48,029 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-10-22 08:55:48,030 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2019-10-22 08:55:48,030 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2019-10-22 08:55:48,031 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:55:48,032 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:55:48,032 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-10-22 08:55:48,032 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-10-22 08:55:48,039 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet1, main_#t~post2, main_#t~post3, main_#t~post4, main_~n~0, main_~i~0, main_~k~0, main_~j~0;havoc main_~n~0;havoc main_~i~0;havoc main_~k~0;main_~n~0 := main_#t~nondet1;havoc main_#t~nondet1; 9#L13true assume !!(main_~n~0 <= 1000000);main_~k~0 := main_~n~0;main_~i~0 := 0; 13#L16-2true [2019-10-22 08:55:48,039 INFO L793 eck$LassoCheckResult]: Loop: 13#L16-2true assume !!(main_~i~0 < main_~n~0);main_#t~post2 := main_~k~0;main_~k~0 := main_#t~post2 - 1;havoc main_#t~post2;main_~i~0 := 2 + main_~i~0; 13#L16-2true [2019-10-22 08:55:48,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:48,045 INFO L82 PathProgramCache]: Analyzing trace with hash 998, now seen corresponding path program 1 times [2019-10-22 08:55:48,052 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:48,053 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363768509] [2019-10-22 08:55:48,053 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:48,053 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:48,053 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:48,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:48,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:48,119 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:55:48,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:48,120 INFO L82 PathProgramCache]: Analyzing trace with hash 46, now seen corresponding path program 1 times [2019-10-22 08:55:48,120 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:48,120 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977641682] [2019-10-22 08:55:48,121 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:48,121 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:48,121 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:48,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:48,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:48,132 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:55:48,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:48,133 INFO L82 PathProgramCache]: Analyzing trace with hash 30953, now seen corresponding path program 1 times [2019-10-22 08:55:48,134 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:48,134 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823850972] [2019-10-22 08:55:48,134 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:48,134 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:48,134 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:48,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:48,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:48,147 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:55:48,186 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:55:48,186 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:55:48,187 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:55:48,187 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:55:48,187 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:55:48,187 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:55:48,187 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:55:48,187 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:55:48,187 INFO L131 ssoRankerPreferences]: Filename of dumped script: half_2.i_Iteration1_Loop [2019-10-22 08:55:48,188 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:55:48,188 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:55:48,206 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:55:48,213 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:55:48,218 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:55:48,349 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:55:48,350 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_479895bc-1c37-4141-818f-8c4a7f843182/bin/uautomizer/z3 Starting monitored process 2 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 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:55:48,355 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:55:48,355 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:55:48,365 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:55:48,365 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post2=0} Honda state: {ULTIMATE.start_main_#t~post2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Exception during sending of exit command (exit): Broken pipe No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_479895bc-1c37-4141-818f-8c4a7f843182/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:55:48,375 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:55:48,376 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_479895bc-1c37-4141-818f-8c4a7f843182/bin/uautomizer/z3 Starting monitored process 4 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 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:55:48,383 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:55:48,383 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:55:48,416 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:55:48,416 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~k~0=0} Honda state: {ULTIMATE.start_main_~k~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~k~0=-3}, {ULTIMATE.start_main_~k~0=-1}, {ULTIMATE.start_main_~k~0=3}] Lambdas: [1, 4, 1] Nus: [0, 1] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_479895bc-1c37-4141-818f-8c4a7f843182/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:55:48,422 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:55:48,422 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_479895bc-1c37-4141-818f-8c4a7f843182/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:55:48,430 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:55:48,430 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:55:48,522 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:55:48,523 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:55:48,523 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:55:48,523 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:55:48,523 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:55:48,523 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:55:48,524 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:55:48,524 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:55:48,524 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:55:48,524 INFO L131 ssoRankerPreferences]: Filename of dumped script: half_2.i_Iteration1_Loop [2019-10-22 08:55:48,524 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:55:48,524 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:55:48,526 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:55:48,534 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:55:48,537 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:55:48,595 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:55:48,599 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:55:48,602 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:55:48,603 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:55:48,604 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:55:48,604 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:55:48,604 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:55:48,604 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:55:48,606 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:55:48,607 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:55:48,615 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:55:48,615 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:55:48,616 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:55:48,616 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:55:48,616 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:55:48,616 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:55:48,616 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:55:48,620 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:55:48,620 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:55:48,621 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:55:48,623 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:55:48,623 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:55:48,624 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:55:48,624 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:55:48,624 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:55:48,624 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:55:48,625 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:55:48,625 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:55:48,633 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:55:48,641 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 08:55:48,641 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-10-22 08:55:48,643 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:55:48,643 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:55:48,643 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:55:48,644 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-10-22 08:55:48,649 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:55:48,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:48,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:48,701 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:55:48,703 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:55:48,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:48,714 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:55:48,714 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:55:48,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:48,730 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-10-22 08:55:48,731 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states. Second operand 2 states. [2019-10-22 08:55:48,769 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states.. Second operand 2 states. Result 34 states and 44 transitions. Complement of second has 5 states. [2019-10-22 08:55:48,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-10-22 08:55:48,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-10-22 08:55:48,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 30 transitions. [2019-10-22 08:55:48,773 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 30 transitions. Stem has 2 letters. Loop has 1 letters. [2019-10-22 08:55:48,775 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:55:48,775 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 30 transitions. Stem has 3 letters. Loop has 1 letters. [2019-10-22 08:55:48,775 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:55:48,775 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 30 transitions. Stem has 2 letters. Loop has 2 letters. [2019-10-22 08:55:48,775 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:55:48,776 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 44 transitions. [2019-10-22 08:55:48,779 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 08:55:48,782 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 8 states and 10 transitions. [2019-10-22 08:55:48,783 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-10-22 08:55:48,783 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-10-22 08:55:48,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 10 transitions. [2019-10-22 08:55:48,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 08:55:48,784 INFO L688 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2019-10-22 08:55:48,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 10 transitions. [2019-10-22 08:55:48,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-10-22 08:55:48,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-10-22 08:55:48,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 10 transitions. [2019-10-22 08:55:48,805 INFO L711 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2019-10-22 08:55:48,805 INFO L591 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2019-10-22 08:55:48,806 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-10-22 08:55:48,806 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 10 transitions. [2019-10-22 08:55:48,806 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 08:55:48,806 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:55:48,806 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:55:48,806 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-10-22 08:55:48,807 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 08:55:48,807 INFO L791 eck$LassoCheckResult]: Stem: 78#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet1, main_#t~post2, main_#t~post3, main_#t~post4, main_~n~0, main_~i~0, main_~k~0, main_~j~0;havoc main_~n~0;havoc main_~i~0;havoc main_~k~0;main_~n~0 := main_#t~nondet1;havoc main_#t~nondet1; 79#L13 assume !!(main_~n~0 <= 1000000);main_~k~0 := main_~n~0;main_~i~0 := 0; 83#L16-2 assume !(main_~i~0 < main_~n~0); 82#L16-3 main_~j~0 := 0; 81#L21-2 [2019-10-22 08:55:48,807 INFO L793 eck$LassoCheckResult]: Loop: 81#L21-2 assume !!(main_~j~0 < (if main_~n~0 < 0 && 0 != main_~n~0 % 2 then 1 + main_~n~0 / 2 else main_~n~0 / 2));__VERIFIER_assert_#in~cond := (if main_~k~0 > 0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 84#L4 assume !(0 == __VERIFIER_assert_~cond); 80#L4-2 main_#t~post3 := main_~k~0;main_~k~0 := main_#t~post3 - 1;havoc main_#t~post3;main_#t~post4 := main_~j~0;main_~j~0 := 1 + main_#t~post4;havoc main_#t~post4; 81#L21-2 [2019-10-22 08:55:48,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:48,807 INFO L82 PathProgramCache]: Analyzing trace with hash 959500, now seen corresponding path program 1 times [2019-10-22 08:55:48,807 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:48,807 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491086021] [2019-10-22 08:55:48,808 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:48,808 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:48,808 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:48,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:48,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:48,816 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:55:48,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:48,816 INFO L82 PathProgramCache]: Analyzing trace with hash 57822, now seen corresponding path program 1 times [2019-10-22 08:55:48,817 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:48,817 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149979818] [2019-10-22 08:55:48,817 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:48,817 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:48,817 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:48,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:48,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:48,835 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:55:48,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:48,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1480278541, now seen corresponding path program 1 times [2019-10-22 08:55:48,835 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:48,836 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948335122] [2019-10-22 08:55:48,836 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:48,836 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:48,836 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:48,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:48,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:48,916 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948335122] [2019-10-22 08:55:48,916 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:48,917 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 08:55:48,917 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171972765] [2019-10-22 08:55:48,955 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:55:48,955 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:55:48,955 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:55:48,956 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:55:48,956 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:55:48,956 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:55:48,956 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:55:48,956 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:55:48,956 INFO L131 ssoRankerPreferences]: Filename of dumped script: half_2.i_Iteration2_Loop [2019-10-22 08:55:48,956 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:55:48,956 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:55:48,957 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:55:48,969 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:55:48,977 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:55:48,979 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:55:49,172 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:55:49,172 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_479895bc-1c37-4141-818f-8c4a7f843182/bin/uautomizer/z3 Starting monitored process 7 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 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:55:49,178 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:55:49,178 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_479895bc-1c37-4141-818f-8c4a7f843182/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:55:49,188 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:55:49,188 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:55:49,199 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:55:49,201 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:55:49,202 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:55:49,202 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:55:49,202 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:55:49,202 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:55:49,202 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:55:49,202 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:55:49,202 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:55:49,202 INFO L131 ssoRankerPreferences]: Filename of dumped script: half_2.i_Iteration2_Loop [2019-10-22 08:55:49,202 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:55:49,202 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:55:49,204 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:55:49,213 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:55:49,221 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:55:49,223 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:55:49,424 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:55:49,424 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:55:49,424 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:55:49,425 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:55:49,425 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:55:49,426 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:55:49,426 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:55:49,426 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:55:49,429 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:55:49,429 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:55:49,439 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:55:49,456 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 08:55:49,456 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-10-22 08:55:49,457 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:55:49,457 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:55:49,457 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:55:49,457 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~k~0) = 1*ULTIMATE.start_main_~k~0 Supporting invariants [] [2019-10-22 08:55:49,458 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:55:49,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:49,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:49,488 INFO L256 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:55:49,488 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:55:49,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:49,498 WARN L254 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 08:55:49,498 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:55:49,526 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:55:49,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:49,543 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-10-22 08:55:49,543 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4 Second operand 4 states. [2019-10-22 08:55:49,587 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4. Second operand 4 states. Result 11 states and 14 transitions. Complement of second has 6 states. [2019-10-22 08:55:49,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-10-22 08:55:49,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-10-22 08:55:49,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2019-10-22 08:55:49,589 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 4 letters. Loop has 3 letters. [2019-10-22 08:55:49,589 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:55:49,590 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 7 letters. Loop has 3 letters. [2019-10-22 08:55:49,590 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:55:49,590 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 4 letters. Loop has 6 letters. [2019-10-22 08:55:49,590 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:55:49,590 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 14 transitions. [2019-10-22 08:55:49,591 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 08:55:49,591 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 0 states and 0 transitions. [2019-10-22 08:55:49,591 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-10-22 08:55:49,591 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-10-22 08:55:49,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-10-22 08:55:49,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 08:55:49,592 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:55:49,592 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:55:49,592 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:49,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:55:49,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:55:49,597 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 5 states. [2019-10-22 08:55:49,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:49,600 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-10-22 08:55:49,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 08:55:49,600 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-10-22 08:55:49,600 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 08:55:49,600 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 08:55:49,600 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-10-22 08:55:49,600 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-10-22 08:55:49,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-10-22 08:55:49,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 08:55:49,601 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:55:49,601 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:55:49,601 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:55:49,601 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-10-22 08:55:49,601 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-10-22 08:55:49,602 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 08:55:49,602 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-10-22 08:55:49,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.10 08:55:49 BoogieIcfgContainer [2019-10-22 08:55:49,610 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-10-22 08:55:49,610 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:55:49,610 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:55:49,610 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:55:49,611 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:47" (3/4) ... [2019-10-22 08:55:49,614 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 08:55:49,614 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:55:49,616 INFO L168 Benchmark]: Toolchain (without parser) took 2139.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.2 MB). Free memory was 944.4 MB in the beginning and 938.5 MB in the end (delta: 5.9 MB). Peak memory consumption was 171.1 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:49,617 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 960.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:55:49,618 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.2 MB). Free memory was 943.1 MB in the beginning and 1.2 GB in the end (delta: -222.0 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:49,618 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:49,619 INFO L168 Benchmark]: Boogie Preprocessor took 17.74 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:49,619 INFO L168 Benchmark]: RCFGBuilder took 170.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:49,620 INFO L168 Benchmark]: BuchiAutomizer took 1656.18 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 940.2 MB in the end (delta: 200.0 MB). Peak memory consumption was 200.0 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:49,620 INFO L168 Benchmark]: Witness Printer took 4.37 ms. Allocated memory is still 1.2 GB. Free memory was 940.2 MB in the beginning and 938.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:49,624 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 960.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 260.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.2 MB). Free memory was 943.1 MB in the beginning and 1.2 GB in the end (delta: -222.0 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 26.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.74 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 170.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1656.18 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 940.2 MB in the end (delta: 200.0 MB). Peak memory consumption was 200.0 MB. Max. memory is 11.5 GB. * Witness Printer took 4.37 ms. Allocated memory is still 1.2 GB. Free memory was 940.2 MB in the beginning and 938.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. 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 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function n + -1 * i and consists of 4 locations. One deterministic module has affine ranking function k and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.6s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 1.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 8 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 17 SDtfs, 21 SDslu, 7 SDs, 0 SdLazy, 13 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital31 mio100 ax100 hnf100 lsp62 ukn100 mio100 lsp100 div225 bol100 ite106 ukn100 eq143 hnf75 smp81 dnf130 smp98 tf107 neg99 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 14ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...