./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-invgen/nested9.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-invgen/nested9.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg --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 f3ca1fd1ad8fdbcd9efe7b99bc6e3715231417d253ce4ee9bba3d5969472333a .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 08:35:09,721 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:35:09,724 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:35:09,781 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:35:09,781 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:35:09,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:35:09,789 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:35:09,793 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:35:09,796 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:35:09,804 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:35:09,805 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:35:09,806 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:35:09,807 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:35:09,809 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:35:09,811 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:35:09,814 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:35:09,818 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:35:09,820 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:35:09,822 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:35:09,826 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:35:09,834 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:35:09,835 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:35:09,837 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:35:09,839 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:35:09,845 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:35:09,846 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:35:09,846 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:35:09,847 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:35:09,848 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:35:09,849 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:35:09,849 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:35:09,850 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:35:09,851 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:35:09,852 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:35:09,853 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:35:09,853 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:35:09,854 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:35:09,854 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:35:09,854 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:35:09,855 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:35:09,856 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:35:09,857 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-28 08:35:09,884 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:35:09,884 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:35:09,884 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:35:09,884 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:35:09,886 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:35:09,886 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:35:09,886 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:35:09,886 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 08:35:09,887 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 08:35:09,887 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 08:35:09,887 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 08:35:09,887 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 08:35:09,887 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 08:35:09,888 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:35:09,888 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 08:35:09,888 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 08:35:09,888 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 08:35:09,889 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 08:35:09,889 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:35:09,889 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 08:35:09,889 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 08:35:09,889 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 08:35:09,890 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 08:35:09,890 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 08:35:09,890 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 08:35:09,890 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:35:09,890 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 08:35:09,891 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:35:09,891 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:35:09,891 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:35:09,891 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 08:35:09,892 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:35:09,893 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 08:35:09,893 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f3ca1fd1ad8fdbcd9efe7b99bc6e3715231417d253ce4ee9bba3d5969472333a [2021-10-28 08:35:10,150 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:35:10,170 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:35:10,172 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:35:10,173 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:35:10,174 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:35:10,175 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/loop-invgen/nested9.i [2021-10-28 08:35:10,230 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/data/55ef9139f/09503c29a7c0465c925b1cada2143227/FLAG6187d8df3 [2021-10-28 08:35:10,706 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:35:10,709 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/sv-benchmarks/c/loop-invgen/nested9.i [2021-10-28 08:35:10,720 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/data/55ef9139f/09503c29a7c0465c925b1cada2143227/FLAG6187d8df3 [2021-10-28 08:35:11,113 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/data/55ef9139f/09503c29a7c0465c925b1cada2143227 [2021-10-28 08:35:11,118 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:35:11,124 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 08:35:11,141 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:35:11,141 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:35:11,145 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:35:11,146 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:35:11" (1/1) ... [2021-10-28 08:35:11,148 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@389b7b05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:11, skipping insertion in model container [2021-10-28 08:35:11,168 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:35:11" (1/1) ... [2021-10-28 08:35:11,175 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:35:11,206 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:35:11,489 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/sv-benchmarks/c/loop-invgen/nested9.i[893,906] [2021-10-28 08:35:11,524 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:35:11,561 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 08:35:11,590 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/sv-benchmarks/c/loop-invgen/nested9.i[893,906] [2021-10-28 08:35:11,600 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:35:11,626 INFO L208 MainTranslator]: Completed translation [2021-10-28 08:35:11,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:11 WrapperNode [2021-10-28 08:35:11,627 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:35:11,646 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 08:35:11,647 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 08:35:11,647 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 08:35:11,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:11" (1/1) ... [2021-10-28 08:35:11,680 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:11" (1/1) ... [2021-10-28 08:35:11,734 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 08:35:11,736 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 08:35:11,736 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 08:35:11,736 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 08:35:11,749 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:11" (1/1) ... [2021-10-28 08:35:11,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:11" (1/1) ... [2021-10-28 08:35:11,763 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:11" (1/1) ... [2021-10-28 08:35:11,764 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:11" (1/1) ... [2021-10-28 08:35:11,773 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:11" (1/1) ... [2021-10-28 08:35:11,790 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:11" (1/1) ... [2021-10-28 08:35:11,791 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:11" (1/1) ... [2021-10-28 08:35:11,793 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 08:35:11,794 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 08:35:11,795 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 08:35:11,795 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 08:35:11,796 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:11" (1/1) ... [2021-10-28 08:35:11,835 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:11,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:11,892 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:11,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 08:35:12,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 08:35:12,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 08:35:12,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 08:35:12,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 08:35:12,406 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 08:35:12,422 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-28 08:35:12,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:35:12 BoogieIcfgContainer [2021-10-28 08:35:12,425 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 08:35:12,431 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 08:35:12,432 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 08:35:12,435 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 08:35:12,436 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 08:35:12,436 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 08:35:11" (1/3) ... [2021-10-28 08:35:12,437 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5b6f31f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 08:35:12, skipping insertion in model container [2021-10-28 08:35:12,438 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 08:35:12,438 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:11" (2/3) ... [2021-10-28 08:35:12,439 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5b6f31f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 08:35:12, skipping insertion in model container [2021-10-28 08:35:12,439 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 08:35:12,440 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:35:12" (3/3) ... [2021-10-28 08:35:12,449 INFO L389 chiAutomizerObserver]: Analyzing ICFG nested9.i [2021-10-28 08:35:12,564 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 08:35:12,574 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 08:35:12,575 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 08:35:12,575 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 08:35:12,575 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 08:35:12,575 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 08:35:12,575 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 08:35:12,576 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 08:35:12,615 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:12,667 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-10-28 08:35:12,680 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:35:12,684 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:35:12,690 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:35:12,691 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 08:35:12,691 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 08:35:12,691 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:12,700 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-10-28 08:35:12,700 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:35:12,701 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:35:12,701 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:35:12,710 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 08:35:12,717 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9);~__BLAST_NONDET~0 := 0; 9#L-1true havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post8, main_#t~post7, main_#t~post6, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~l~0 := main_#t~nondet5;havoc main_#t~nondet5; 5#L30true assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 8#L31true assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 10#L32true assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 7#L33true assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 6#L33-1true main_~i~0 := 0; 21#L34-3true [2021-10-28 08:35:12,727 INFO L793 eck$LassoCheckResult]: Loop: 21#L34-3true assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 12#L35-3true assume !true; 11#L34-2true main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 21#L34-3true [2021-10-28 08:35:12,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:12,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1806907757, now seen corresponding path program 1 times [2021-10-28 08:35:12,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:35:12,791 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540542859] [2021-10-28 08:35:12,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:35:12,792 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:35:13,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:35:13,080 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:35:13,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:35:13,187 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:35:13,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:13,210 INFO L85 PathProgramCache]: Analyzing trace with hash 62625, now seen corresponding path program 1 times [2021-10-28 08:35:13,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:35:13,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245202028] [2021-10-28 08:35:13,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:35:13,226 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:35:13,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:35:13,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:35:13,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:35:13,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245202028] [2021-10-28 08:35:13,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245202028] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:35:13,309 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:35:13,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 08:35:13,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056003400] [2021-10-28 08:35:13,313 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 08:35:13,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:35:13,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 08:35:13,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 08:35:13,330 INFO L87 Difference]: Start difference. First operand has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:13,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:35:13,341 INFO L93 Difference]: Finished difference Result 19 states and 25 transitions. [2021-10-28 08:35:13,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 08:35:13,344 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 25 transitions. [2021-10-28 08:35:13,349 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-10-28 08:35:13,353 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 14 states and 16 transitions. [2021-10-28 08:35:13,354 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2021-10-28 08:35:13,355 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2021-10-28 08:35:13,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 16 transitions. [2021-10-28 08:35:13,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:35:13,357 INFO L681 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-10-28 08:35:13,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 16 transitions. [2021-10-28 08:35:13,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-28 08:35:13,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:13,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-10-28 08:35:13,382 INFO L704 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-10-28 08:35:13,382 INFO L587 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-10-28 08:35:13,383 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 08:35:13,384 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 16 transitions. [2021-10-28 08:35:13,386 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-10-28 08:35:13,387 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:35:13,387 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:35:13,388 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:35:13,388 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 08:35:13,389 INFO L791 eck$LassoCheckResult]: Stem: 46#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9);~__BLAST_NONDET~0 := 0; 47#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post8, main_#t~post7, main_#t~post6, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~l~0 := main_#t~nondet5;havoc main_#t~nondet5; 48#L30 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 49#L31 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 53#L32 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 52#L33 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 50#L33-1 main_~i~0 := 0; 51#L34-3 [2021-10-28 08:35:13,389 INFO L793 eck$LassoCheckResult]: Loop: 51#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 55#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 54#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 51#L34-3 [2021-10-28 08:35:13,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:13,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1806907757, now seen corresponding path program 2 times [2021-10-28 08:35:13,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:35:13,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667087297] [2021-10-28 08:35:13,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:35:13,393 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:35:13,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:35:13,428 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:35:13,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:35:13,464 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:35:13,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:13,465 INFO L85 PathProgramCache]: Analyzing trace with hash 61788, now seen corresponding path program 1 times [2021-10-28 08:35:13,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:35:13,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493860175] [2021-10-28 08:35:13,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:35:13,466 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:35:13,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:35:13,475 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:35:13,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:35:13,485 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:35:13,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:13,490 INFO L85 PathProgramCache]: Analyzing trace with hash 763900016, now seen corresponding path program 1 times [2021-10-28 08:35:13,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:35:13,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739499288] [2021-10-28 08:35:13,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:35:13,493 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:35:13,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:35:13,528 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:35:13,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:35:13,552 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:35:13,650 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 08:35:13,651 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 08:35:13,651 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 08:35:13,651 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 08:35:13,651 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 08:35:13,651 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:13,651 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 08:35:13,652 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 08:35:13,652 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration2_Loop [2021-10-28 08:35:13,652 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 08:35:13,652 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 08:35:13,668 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:13,674 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:13,730 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 08:35:13,731 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 08:35:13,733 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:13,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:13,739 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:13,745 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:35:13,745 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:35:13,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-28 08:35:13,775 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 08:35:13,776 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6=0} Honda state: {ULTIMATE.start_main_#t~post6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 08:35:13,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-28 08:35:13,811 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:13,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:13,812 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:13,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-28 08:35:13,815 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:35:13,815 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:35:13,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-28 08:35:13,865 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:13,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:13,866 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:13,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-28 08:35:13,868 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 08:35:13,868 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:35:14,035 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 08:35:14,040 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2021-10-28 08:35:14,041 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 08:35:14,041 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 08:35:14,041 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 08:35:14,041 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 08:35:14,041 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 08:35:14,041 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:14,041 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 08:35:14,041 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 08:35:14,041 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration2_Loop [2021-10-28 08:35:14,042 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 08:35:14,042 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 08:35:14,043 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:14,047 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:14,104 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 08:35:14,108 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 08:35:14,109 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:14,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:14,117 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:14,123 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:35:14,132 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:35:14,132 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:35:14,133 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:35:14,133 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:35:14,133 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:35:14,137 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:35:14,137 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:35:14,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-28 08:35:14,139 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:35:14,172 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2021-10-28 08:35:14,173 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:14,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:14,175 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:14,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-28 08:35:14,177 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:35:14,184 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:35:14,184 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:35:14,185 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:35:14,185 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:35:14,185 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:35:14,187 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:35:14,187 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:35:14,230 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 08:35:14,235 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 08:35:14,235 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 08:35:14,236 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:14,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:14,238 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:14,244 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 08:35:14,244 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 08:35:14,244 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 08:35:14,244 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 1 Supporting invariants [] [2021-10-28 08:35:14,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-28 08:35:14,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-28 08:35:14,283 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 08:35:14,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:14,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:35:14,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 08:35:14,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:35:14,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:35:14,381 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 08:35:14,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:35:14,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:35:14,484 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 [2021-10-28 08:35:14,484 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 16 transitions. cyclomatic complexity: 3 Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:14,577 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 16 transitions. cyclomatic complexity: 3. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 36 states and 46 transitions. Complement of second has 8 states. [2021-10-28 08:35:14,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-10-28 08:35:14,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:14,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 25 transitions. [2021-10-28 08:35:14,581 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 7 letters. Loop has 3 letters. [2021-10-28 08:35:14,582 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:35:14,582 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 10 letters. Loop has 3 letters. [2021-10-28 08:35:14,582 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:35:14,582 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 7 letters. Loop has 6 letters. [2021-10-28 08:35:14,582 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:35:14,583 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 46 transitions. [2021-10-28 08:35:14,589 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-10-28 08:35:14,591 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 35 states and 44 transitions. [2021-10-28 08:35:14,592 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2021-10-28 08:35:14,597 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2021-10-28 08:35:14,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 44 transitions. [2021-10-28 08:35:14,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 08:35:14,598 INFO L681 BuchiCegarLoop]: Abstraction has 35 states and 44 transitions. [2021-10-28 08:35:14,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 44 transitions. [2021-10-28 08:35:14,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 26. [2021-10-28 08:35:14,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 25 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:14,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2021-10-28 08:35:14,601 INFO L704 BuchiCegarLoop]: Abstraction has 26 states and 33 transitions. [2021-10-28 08:35:14,601 INFO L587 BuchiCegarLoop]: Abstraction has 26 states and 33 transitions. [2021-10-28 08:35:14,601 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 08:35:14,601 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 33 transitions. [2021-10-28 08:35:14,603 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-10-28 08:35:14,603 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:35:14,603 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:35:14,604 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:35:14,604 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-10-28 08:35:14,604 INFO L791 eck$LassoCheckResult]: Stem: 154#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9);~__BLAST_NONDET~0 := 0; 155#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post8, main_#t~post7, main_#t~post6, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~l~0 := main_#t~nondet5;havoc main_#t~nondet5; 156#L30 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 157#L31 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 161#L32 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 160#L33 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 158#L33-1 main_~i~0 := 0; 159#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 166#L35-3 [2021-10-28 08:35:14,604 INFO L793 eck$LassoCheckResult]: Loop: 166#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 167#L36-2 assume !(main_~k~0 < main_~j~0); 171#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 176#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 162#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 163#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 166#L35-3 [2021-10-28 08:35:14,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:14,605 INFO L85 PathProgramCache]: Analyzing trace with hash 179565651, now seen corresponding path program 1 times [2021-10-28 08:35:14,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:35:14,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474914920] [2021-10-28 08:35:14,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:35:14,605 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:35:14,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:35:14,626 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:35:14,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:35:14,651 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:35:14,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:14,652 INFO L85 PathProgramCache]: Analyzing trace with hash 2077067147, now seen corresponding path program 1 times [2021-10-28 08:35:14,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:35:14,652 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197972675] [2021-10-28 08:35:14,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:35:14,652 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:35:14,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:35:14,664 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:35:14,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:35:14,670 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:35:14,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:14,671 INFO L85 PathProgramCache]: Analyzing trace with hash -696682915, now seen corresponding path program 1 times [2021-10-28 08:35:14,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:35:14,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498952322] [2021-10-28 08:35:14,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:35:14,671 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:35:14,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:35:14,761 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:35:14,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:35:14,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498952322] [2021-10-28 08:35:14,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498952322] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:35:14,762 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:35:14,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:35:14,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707443521] [2021-10-28 08:35:14,890 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 08:35:14,890 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 08:35:14,890 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 08:35:14,890 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 08:35:14,890 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 08:35:14,890 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:14,890 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 08:35:14,891 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 08:35:14,891 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration3_Loop [2021-10-28 08:35:14,891 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 08:35:14,891 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 08:35:14,892 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:14,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-28 08:35:14,928 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:14,930 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:14,988 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 08:35:14,988 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 08:35:14,988 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:14,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:14,989 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:15,007 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:35:15,007 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:35:15,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-28 08:35:15,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-28 08:35:15,066 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:15,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:15,067 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:15,075 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 08:35:15,075 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:35:15,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-28 08:35:15,378 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 08:35:15,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-28 08:35:15,382 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 08:35:15,382 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 08:35:15,382 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 08:35:15,382 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 08:35:15,382 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 08:35:15,382 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:15,382 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 08:35:15,382 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 08:35:15,382 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration3_Loop [2021-10-28 08:35:15,382 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 08:35:15,382 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 08:35:15,383 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:15,411 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:15,414 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:15,461 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 08:35:15,461 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 08:35:15,461 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:15,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:15,462 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:15,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-28 08:35:15,475 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:35:15,488 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:35:15,488 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:35:15,488 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:35:15,488 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:35:15,488 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:35:15,492 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:35:15,492 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:35:15,502 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 08:35:15,508 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-10-28 08:35:15,508 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 08:35:15,508 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:15,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:15,509 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:15,544 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 08:35:15,544 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 08:35:15,544 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 08:35:15,544 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2021-10-28 08:35:15,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-28 08:35:15,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-28 08:35:15,568 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 08:35:15,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:15,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:35:15,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 08:35:15,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:35:15,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:35:15,641 WARN L261 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 08:35:15,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:35:15,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:35:15,732 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2021-10-28 08:35:15,732 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 26 states and 33 transitions. cyclomatic complexity: 9 Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:15,886 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 26 states and 33 transitions. cyclomatic complexity: 9. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 118 states and 151 transitions. Complement of second has 13 states. [2021-10-28 08:35:15,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2021-10-28 08:35:15,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:15,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 36 transitions. [2021-10-28 08:35:15,887 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 36 transitions. Stem has 8 letters. Loop has 6 letters. [2021-10-28 08:35:15,887 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:35:15,887 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 36 transitions. Stem has 14 letters. Loop has 6 letters. [2021-10-28 08:35:15,888 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:35:15,888 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 36 transitions. Stem has 8 letters. Loop has 12 letters. [2021-10-28 08:35:15,888 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:35:15,888 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 118 states and 151 transitions. [2021-10-28 08:35:15,892 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 25 [2021-10-28 08:35:15,895 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 118 states to 99 states and 129 transitions. [2021-10-28 08:35:15,895 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2021-10-28 08:35:15,895 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 37 [2021-10-28 08:35:15,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 99 states and 129 transitions. [2021-10-28 08:35:15,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 08:35:15,895 INFO L681 BuchiCegarLoop]: Abstraction has 99 states and 129 transitions. [2021-10-28 08:35:15,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states and 129 transitions. [2021-10-28 08:35:15,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 72. [2021-10-28 08:35:15,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 72 states have (on average 1.3472222222222223) internal successors, (97), 71 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:15,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 97 transitions. [2021-10-28 08:35:15,903 INFO L704 BuchiCegarLoop]: Abstraction has 72 states and 97 transitions. [2021-10-28 08:35:15,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:35:15,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:35:15,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:35:15,904 INFO L87 Difference]: Start difference. First operand 72 states and 97 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:15,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:35:15,918 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2021-10-28 08:35:15,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:35:15,918 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 35 transitions. [2021-10-28 08:35:15,919 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-10-28 08:35:15,920 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 28 states and 34 transitions. [2021-10-28 08:35:15,920 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2021-10-28 08:35:15,920 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2021-10-28 08:35:15,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 34 transitions. [2021-10-28 08:35:15,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 08:35:15,920 INFO L681 BuchiCegarLoop]: Abstraction has 28 states and 34 transitions. [2021-10-28 08:35:15,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 34 transitions. [2021-10-28 08:35:15,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2021-10-28 08:35:15,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 26 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:15,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2021-10-28 08:35:15,923 INFO L704 BuchiCegarLoop]: Abstraction has 27 states and 33 transitions. [2021-10-28 08:35:15,923 INFO L587 BuchiCegarLoop]: Abstraction has 27 states and 33 transitions. [2021-10-28 08:35:15,923 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 08:35:15,923 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 33 transitions. [2021-10-28 08:35:15,924 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-10-28 08:35:15,924 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:35:15,924 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:35:15,924 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:35:15,925 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-10-28 08:35:15,925 INFO L791 eck$LassoCheckResult]: Stem: 481#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9);~__BLAST_NONDET~0 := 0; 482#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post8, main_#t~post7, main_#t~post6, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~l~0 := main_#t~nondet5;havoc main_#t~nondet5; 483#L30 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 484#L31 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 488#L32 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 487#L33 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 485#L33-1 main_~i~0 := 0; 486#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 495#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 496#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 507#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 493#L35-3 [2021-10-28 08:35:15,925 INFO L793 eck$LassoCheckResult]: Loop: 493#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 494#L36-2 assume !(main_~k~0 < main_~j~0); 498#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 504#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 489#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 490#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 493#L35-3 [2021-10-28 08:35:15,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:15,925 INFO L85 PathProgramCache]: Analyzing trace with hash -2088903248, now seen corresponding path program 2 times [2021-10-28 08:35:15,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:35:15,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815691990] [2021-10-28 08:35:15,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:35:15,926 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:35:15,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:35:15,937 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:35:15,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:35:15,950 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:35:15,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:15,951 INFO L85 PathProgramCache]: Analyzing trace with hash 2077067147, now seen corresponding path program 2 times [2021-10-28 08:35:15,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:35:15,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294714278] [2021-10-28 08:35:15,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:35:15,951 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:35:15,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:35:15,956 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:35:15,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:35:15,983 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:35:15,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:15,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1743510022, now seen corresponding path program 2 times [2021-10-28 08:35:15,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:35:15,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69854126] [2021-10-28 08:35:15,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:35:15,984 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:35:16,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:35:16,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-28 08:35:16,036 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 08:35:16,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:35:16,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69854126] [2021-10-28 08:35:16,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69854126] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:35:16,036 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:35:16,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:35:16,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803439527] [2021-10-28 08:35:16,093 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 08:35:16,093 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 08:35:16,094 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 08:35:16,094 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 08:35:16,094 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 08:35:16,094 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:16,094 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 08:35:16,094 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 08:35:16,094 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration4_Loop [2021-10-28 08:35:16,095 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 08:35:16,095 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 08:35:16,098 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:16,115 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:16,117 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:16,176 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 08:35:16,176 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 08:35:16,177 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:16,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:16,183 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:16,185 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:35:16,185 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:35:16,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-28 08:35:16,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-28 08:35:16,221 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:16,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:16,222 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:16,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-28 08:35:16,224 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 08:35:16,224 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:35:16,484 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 08:35:16,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-28 08:35:16,488 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 08:35:16,488 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 08:35:16,488 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 08:35:16,488 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 08:35:16,488 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 08:35:16,488 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:16,488 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 08:35:16,488 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 08:35:16,488 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration4_Loop [2021-10-28 08:35:16,488 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 08:35:16,489 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 08:35:16,490 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:16,493 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:16,505 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:16,570 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 08:35:16,570 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 08:35:16,570 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:16,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:16,571 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:16,584 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:35:16,594 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:35:16,594 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:35:16,594 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:35:16,594 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:35:16,595 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:35:16,595 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:35:16,596 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:35:16,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-28 08:35:16,606 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:35:16,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-10-28 08:35:16,635 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:16,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:16,636 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:16,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-28 08:35:16,637 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:35:16,644 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:35:16,644 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:35:16,644 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:35:16,644 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:35:16,644 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:35:16,645 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:35:16,645 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:35:16,654 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:35:16,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-28 08:35:16,674 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:16,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:16,675 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:16,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-28 08:35:16,680 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:35:16,687 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:35:16,687 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:35:16,687 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:35:16,687 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:35:16,687 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:35:16,690 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:35:16,690 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:35:16,705 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 08:35:16,710 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-10-28 08:35:16,710 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 08:35:16,710 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:16,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:16,718 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:16,725 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 08:35:16,725 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 08:35:16,725 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 08:35:16,725 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~n~0) = -2*ULTIMATE.start_main_~i~0 + 1*ULTIMATE.start_main_~n~0 Supporting invariants [] [2021-10-28 08:35:16,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-28 08:35:16,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-28 08:35:16,759 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 08:35:16,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:16,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:35:16,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 08:35:16,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:35:16,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:35:16,834 WARN L261 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 08:35:16,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:35:16,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:35:16,960 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 6 loop predicates [2021-10-28 08:35:16,960 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 33 transitions. cyclomatic complexity: 8 Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:17,132 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 33 transitions. cyclomatic complexity: 8. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 97 states and 129 transitions. Complement of second has 16 states. [2021-10-28 08:35:17,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 1 stem states 7 non-accepting loop states 1 accepting loop states [2021-10-28 08:35:17,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:17,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 35 transitions. [2021-10-28 08:35:17,135 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 35 transitions. Stem has 11 letters. Loop has 6 letters. [2021-10-28 08:35:17,135 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:35:17,135 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 35 transitions. Stem has 17 letters. Loop has 6 letters. [2021-10-28 08:35:17,135 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:35:17,135 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 35 transitions. Stem has 11 letters. Loop has 12 letters. [2021-10-28 08:35:17,136 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:35:17,136 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 97 states and 129 transitions. [2021-10-28 08:35:17,138 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 18 [2021-10-28 08:35:17,140 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 97 states to 93 states and 125 transitions. [2021-10-28 08:35:17,140 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 27 [2021-10-28 08:35:17,140 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2021-10-28 08:35:17,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 93 states and 125 transitions. [2021-10-28 08:35:17,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 08:35:17,141 INFO L681 BuchiCegarLoop]: Abstraction has 93 states and 125 transitions. [2021-10-28 08:35:17,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states and 125 transitions. [2021-10-28 08:35:17,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 63. [2021-10-28 08:35:17,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 63 states have (on average 1.3650793650793651) internal successors, (86), 62 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:17,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 86 transitions. [2021-10-28 08:35:17,146 INFO L704 BuchiCegarLoop]: Abstraction has 63 states and 86 transitions. [2021-10-28 08:35:17,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:35:17,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:35:17,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:35:17,147 INFO L87 Difference]: Start difference. First operand 63 states and 86 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:17,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:35:17,167 INFO L93 Difference]: Finished difference Result 50 states and 63 transitions. [2021-10-28 08:35:17,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:35:17,167 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 50 states and 63 transitions. [2021-10-28 08:35:17,168 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-10-28 08:35:17,168 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 50 states to 29 states and 35 transitions. [2021-10-28 08:35:17,168 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2021-10-28 08:35:17,168 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-10-28 08:35:17,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 35 transitions. [2021-10-28 08:35:17,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 08:35:17,168 INFO L681 BuchiCegarLoop]: Abstraction has 29 states and 35 transitions. [2021-10-28 08:35:17,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 35 transitions. [2021-10-28 08:35:17,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-10-28 08:35:17,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 29 states have (on average 1.206896551724138) internal successors, (35), 28 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:17,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2021-10-28 08:35:17,170 INFO L704 BuchiCegarLoop]: Abstraction has 29 states and 35 transitions. [2021-10-28 08:35:17,170 INFO L587 BuchiCegarLoop]: Abstraction has 29 states and 35 transitions. [2021-10-28 08:35:17,170 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-28 08:35:17,170 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 29 states and 35 transitions. [2021-10-28 08:35:17,170 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-10-28 08:35:17,170 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:35:17,170 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:35:17,171 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:35:17,171 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:35:17,171 INFO L791 eck$LassoCheckResult]: Stem: 821#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9);~__BLAST_NONDET~0 := 0; 822#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post8, main_#t~post7, main_#t~post6, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~l~0 := main_#t~nondet5;havoc main_#t~nondet5; 819#L30 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 820#L31 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 826#L32 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 825#L33 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 823#L33-1 main_~i~0 := 0; 824#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 833#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 834#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 847#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 831#L35-3 [2021-10-28 08:35:17,171 INFO L793 eck$LassoCheckResult]: Loop: 831#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 832#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 835#L18 assume !(0 == __VERIFIER_assert_~cond); 838#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 840#L36-2 assume !(main_~k~0 < main_~j~0); 842#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 843#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 827#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 828#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 831#L35-3 [2021-10-28 08:35:17,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:17,172 INFO L85 PathProgramCache]: Analyzing trace with hash -2088903248, now seen corresponding path program 3 times [2021-10-28 08:35:17,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:35:17,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347748929] [2021-10-28 08:35:17,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:35:17,173 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:35:17,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:35:17,183 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:35:17,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:35:17,194 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:35:17,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:17,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1576881701, now seen corresponding path program 1 times [2021-10-28 08:35:17,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:35:17,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725819219] [2021-10-28 08:35:17,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:35:17,196 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:35:17,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:35:17,204 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:35:17,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:35:17,212 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:35:17,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:17,213 INFO L85 PathProgramCache]: Analyzing trace with hash -604215978, now seen corresponding path program 1 times [2021-10-28 08:35:17,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:35:17,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576498294] [2021-10-28 08:35:17,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:35:17,213 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:35:17,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:35:17,226 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:35:17,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:35:17,243 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:35:17,361 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 08:35:17,362 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 08:35:17,362 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 08:35:17,362 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 08:35:17,362 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 08:35:17,362 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:17,362 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 08:35:17,362 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 08:35:17,362 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration5_Loop [2021-10-28 08:35:17,362 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 08:35:17,362 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 08:35:17,363 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:17,372 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:17,374 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:17,377 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:17,394 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:17,477 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 08:35:17,477 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 08:35:17,477 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:17,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:17,482 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:17,485 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:35:17,485 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:35:17,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-10-28 08:35:17,499 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 08:35:17,499 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start___VERIFIER_assert_~cond=1, ULTIMATE.start___VERIFIER_assert_#in~cond=1} Honda state: {ULTIMATE.start___VERIFIER_assert_~cond=1, ULTIMATE.start___VERIFIER_assert_#in~cond=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 08:35:17,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-10-28 08:35:17,521 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:17,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:17,522 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:17,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-10-28 08:35:17,524 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:35:17,524 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:35:17,532 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 08:35:17,532 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post8=0} Honda state: {ULTIMATE.start_main_#t~post8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 08:35:17,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-10-28 08:35:17,554 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:17,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:17,555 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:17,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-10-28 08:35:17,560 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:35:17,560 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:35:17,568 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 08:35:17,568 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6=0} Honda state: {ULTIMATE.start_main_#t~post6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 08:35:17,587 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2021-10-28 08:35:17,588 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:17,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:17,588 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:17,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-10-28 08:35:17,590 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:35:17,590 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:35:17,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-10-28 08:35:17,618 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:17,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:17,619 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:17,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-10-28 08:35:17,620 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 08:35:17,620 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:35:17,883 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 08:35:17,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-10-28 08:35:17,886 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 08:35:17,886 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 08:35:17,886 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 08:35:17,886 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 08:35:17,886 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 08:35:17,886 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:17,886 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 08:35:17,886 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 08:35:17,886 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration5_Loop [2021-10-28 08:35:17,886 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 08:35:17,886 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 08:35:17,888 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:17,907 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:17,910 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:17,912 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:17,915 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:17,991 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 08:35:17,991 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 08:35:17,992 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:17,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:17,999 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:18,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-10-28 08:35:18,046 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:35:18,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-10-28 08:35:18,055 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:35:18,055 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:35:18,056 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:35:18,056 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:35:18,056 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:35:18,060 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:35:18,060 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:35:18,073 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 08:35:18,076 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 08:35:18,077 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 08:35:18,077 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:18,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:18,078 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:18,083 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 08:35:18,083 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 08:35:18,083 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 08:35:18,083 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 3 Supporting invariants [] [2021-10-28 08:35:18,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-10-28 08:35:18,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-10-28 08:35:18,117 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 08:35:18,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:18,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:35:18,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 08:35:18,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:35:18,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:35:18,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 08:35:18,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:35:18,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:35:18,357 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 7 loop predicates [2021-10-28 08:35:18,357 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 29 states and 35 transitions. cyclomatic complexity: 8 Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:18,543 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 29 states and 35 transitions. cyclomatic complexity: 8. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 117 states and 146 transitions. Complement of second has 18 states. [2021-10-28 08:35:18,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 1 stem states 8 non-accepting loop states 1 accepting loop states [2021-10-28 08:35:18,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:18,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 40 transitions. [2021-10-28 08:35:18,544 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 11 letters. Loop has 9 letters. [2021-10-28 08:35:18,545 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:35:18,545 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 20 letters. Loop has 9 letters. [2021-10-28 08:35:18,545 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:35:18,545 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 11 letters. Loop has 18 letters. [2021-10-28 08:35:18,546 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:35:18,546 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 117 states and 146 transitions. [2021-10-28 08:35:18,547 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 24 [2021-10-28 08:35:18,548 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 117 states to 115 states and 144 transitions. [2021-10-28 08:35:18,549 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2021-10-28 08:35:18,549 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2021-10-28 08:35:18,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 115 states and 144 transitions. [2021-10-28 08:35:18,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 08:35:18,549 INFO L681 BuchiCegarLoop]: Abstraction has 115 states and 144 transitions. [2021-10-28 08:35:18,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states and 144 transitions. [2021-10-28 08:35:18,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 73. [2021-10-28 08:35:18,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 73 states have (on average 1.2876712328767124) internal successors, (94), 72 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:18,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 94 transitions. [2021-10-28 08:35:18,559 INFO L704 BuchiCegarLoop]: Abstraction has 73 states and 94 transitions. [2021-10-28 08:35:18,559 INFO L587 BuchiCegarLoop]: Abstraction has 73 states and 94 transitions. [2021-10-28 08:35:18,559 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-28 08:35:18,559 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 73 states and 94 transitions. [2021-10-28 08:35:18,561 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2021-10-28 08:35:18,561 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:35:18,561 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:35:18,563 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:35:18,563 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-10-28 08:35:18,563 INFO L791 eck$LassoCheckResult]: Stem: 1075#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9);~__BLAST_NONDET~0 := 0; 1076#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post8, main_#t~post7, main_#t~post6, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~l~0 := main_#t~nondet5;havoc main_#t~nondet5; 1077#L30 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 1078#L31 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 1082#L32 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 1081#L33 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 1079#L33-1 main_~i~0 := 0; 1080#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 1115#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 1127#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 1129#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 1103#L35-3 [2021-10-28 08:35:18,565 INFO L793 eck$LassoCheckResult]: Loop: 1103#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 1091#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1092#L18 assume !(0 == __VERIFIER_assert_~cond); 1110#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 1109#L36-2 assume !(main_~k~0 < main_~j~0); 1102#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 1103#L35-3 [2021-10-28 08:35:18,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:18,566 INFO L85 PathProgramCache]: Analyzing trace with hash -2088903248, now seen corresponding path program 4 times [2021-10-28 08:35:18,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:35:18,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225118889] [2021-10-28 08:35:18,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:35:18,566 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:35:18,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:35:18,588 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:35:18,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:35:18,607 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:35:18,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:18,611 INFO L85 PathProgramCache]: Analyzing trace with hash 2078695422, now seen corresponding path program 1 times [2021-10-28 08:35:18,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:35:18,611 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169678414] [2021-10-28 08:35:18,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:35:18,611 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:35:18,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:35:18,622 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:35:18,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:35:18,630 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:35:18,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:18,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1741881747, now seen corresponding path program 2 times [2021-10-28 08:35:18,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:35:18,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380921552] [2021-10-28 08:35:18,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:35:18,635 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:35:18,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:35:18,655 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:35:18,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:35:18,669 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:35:18,733 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 08:35:18,733 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 08:35:18,733 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 08:35:18,734 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 08:35:18,734 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 08:35:18,734 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:18,734 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 08:35:18,734 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 08:35:18,734 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration6_Loop [2021-10-28 08:35:18,734 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 08:35:18,734 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 08:35:18,735 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:18,748 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:18,750 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:18,753 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:18,808 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 08:35:18,809 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 08:35:18,809 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:18,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:18,810 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:18,815 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:35:18,815 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:35:18,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-10-28 08:35:18,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-10-28 08:35:18,871 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:18,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:18,875 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:18,879 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 08:35:18,880 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:35:18,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-10-28 08:35:19,292 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 08:35:19,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-10-28 08:35:19,299 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 08:35:19,299 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 08:35:19,299 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 08:35:19,299 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 08:35:19,299 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 08:35:19,299 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:19,299 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 08:35:19,299 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 08:35:19,299 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration6_Loop [2021-10-28 08:35:19,299 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 08:35:19,299 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 08:35:19,300 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:19,305 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:19,317 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:19,319 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:19,360 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 08:35:19,361 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 08:35:19,361 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:19,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:19,362 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:19,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-10-28 08:35:19,363 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:35:19,370 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:35:19,370 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:35:19,370 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:35:19,371 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:35:19,371 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:35:19,372 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:35:19,372 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:35:19,388 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:35:19,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-10-28 08:35:19,408 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:19,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:19,409 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:19,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-10-28 08:35:19,417 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:35:19,424 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:35:19,424 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:35:19,424 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:35:19,424 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:35:19,424 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:35:19,426 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:35:19,426 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:35:19,450 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 08:35:19,456 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-10-28 08:35:19,456 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 08:35:19,456 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:19,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:19,457 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:19,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-10-28 08:35:19,459 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 08:35:19,460 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 08:35:19,460 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 08:35:19,460 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~j~0) = 5*ULTIMATE.start_main_~i~0 - 2*ULTIMATE.start_main_~j~0 Supporting invariants [] [2021-10-28 08:35:19,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-10-28 08:35:19,485 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 08:35:19,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:19,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:35:19,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 08:35:19,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:35:19,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:35:19,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 08:35:19,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:35:19,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:35:19,671 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2021-10-28 08:35:19,671 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 73 states and 94 transitions. cyclomatic complexity: 25 Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:19,688 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 73 states and 94 transitions. cyclomatic complexity: 25. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 77 states and 98 transitions. Complement of second has 5 states. [2021-10-28 08:35:19,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-28 08:35:19,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:19,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-10-28 08:35:19,689 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 11 letters. Loop has 6 letters. [2021-10-28 08:35:19,689 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:35:19,689 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 08:35:19,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:19,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:35:19,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 08:35:19,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:35:19,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:35:19,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 08:35:19,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:35:19,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-10-28 08:35:19,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:35:19,908 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 4 loop predicates [2021-10-28 08:35:19,908 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 73 states and 94 transitions. cyclomatic complexity: 25 Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:19,917 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 73 states and 94 transitions. cyclomatic complexity: 25. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 77 states and 98 transitions. Complement of second has 5 states. [2021-10-28 08:35:19,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-28 08:35:19,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:19,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-10-28 08:35:19,921 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 11 letters. Loop has 6 letters. [2021-10-28 08:35:19,921 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:35:19,921 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 08:35:19,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:19,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:35:19,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 08:35:19,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:35:19,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-10-28 08:35:19,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:35:19,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 08:35:19,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:35:20,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:35:20,068 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2021-10-28 08:35:20,068 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 73 states and 94 transitions. cyclomatic complexity: 25 Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:20,123 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 73 states and 94 transitions. cyclomatic complexity: 25. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 156 states and 196 transitions. Complement of second has 10 states. [2021-10-28 08:35:20,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2021-10-28 08:35:20,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:20,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 34 transitions. [2021-10-28 08:35:20,125 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 11 letters. Loop has 6 letters. [2021-10-28 08:35:20,125 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:35:20,126 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 17 letters. Loop has 6 letters. [2021-10-28 08:35:20,126 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:35:20,126 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 11 letters. Loop has 12 letters. [2021-10-28 08:35:20,127 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:35:20,127 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 156 states and 196 transitions. [2021-10-28 08:35:20,129 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 28 [2021-10-28 08:35:20,130 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 156 states to 142 states and 180 transitions. [2021-10-28 08:35:20,131 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2021-10-28 08:35:20,131 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2021-10-28 08:35:20,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 142 states and 180 transitions. [2021-10-28 08:35:20,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 08:35:20,131 INFO L681 BuchiCegarLoop]: Abstraction has 142 states and 180 transitions. [2021-10-28 08:35:20,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states and 180 transitions. [2021-10-28 08:35:20,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 110. [2021-10-28 08:35:20,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 110 states have (on average 1.309090909090909) internal successors, (144), 109 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:20,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 144 transitions. [2021-10-28 08:35:20,142 INFO L704 BuchiCegarLoop]: Abstraction has 110 states and 144 transitions. [2021-10-28 08:35:20,142 INFO L587 BuchiCegarLoop]: Abstraction has 110 states and 144 transitions. [2021-10-28 08:35:20,142 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-10-28 08:35:20,142 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 110 states and 144 transitions. [2021-10-28 08:35:20,143 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 23 [2021-10-28 08:35:20,143 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:35:20,143 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:35:20,144 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:35:20,144 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-28 08:35:20,144 INFO L791 eck$LassoCheckResult]: Stem: 1659#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9);~__BLAST_NONDET~0 := 0; 1660#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post8, main_#t~post7, main_#t~post6, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~l~0 := main_#t~nondet5;havoc main_#t~nondet5; 1661#L30 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 1662#L31 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 1666#L32 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 1665#L33 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 1663#L33-1 main_~i~0 := 0; 1664#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 1689#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 1713#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 1714#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 1695#L35-3 [2021-10-28 08:35:20,144 INFO L793 eck$LassoCheckResult]: Loop: 1695#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 1692#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1696#L18 assume !(0 == __VERIFIER_assert_~cond); 1682#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 1676#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1677#L18 assume !(0 == __VERIFIER_assert_~cond); 1679#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 1693#L36-2 assume !(main_~k~0 < main_~j~0); 1685#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 1686#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 1667#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 1668#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 1695#L35-3 [2021-10-28 08:35:20,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:20,145 INFO L85 PathProgramCache]: Analyzing trace with hash -2088903248, now seen corresponding path program 5 times [2021-10-28 08:35:20,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:35:20,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107127249] [2021-10-28 08:35:20,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:35:20,145 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:35:20,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:35:20,153 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:35:20,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:35:20,162 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:35:20,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:20,162 INFO L85 PathProgramCache]: Analyzing trace with hash -206190261, now seen corresponding path program 2 times [2021-10-28 08:35:20,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:35:20,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902926450] [2021-10-28 08:35:20,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:35:20,163 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:35:20,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:35:20,245 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:35:20,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:35:20,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902926450] [2021-10-28 08:35:20,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902926450] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:35:20,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871535324] [2021-10-28 08:35:20,246 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 08:35:20,246 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:35:20,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:20,247 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:35:20,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-10-28 08:35:20,333 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 08:35:20,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 08:35:20,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 08:35:20,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:35:20,516 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:35:20,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871535324] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:35:20,516 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:35:20,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-28 08:35:20,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128134660] [2021-10-28 08:35:20,517 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 08:35:20,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:35:20,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 08:35:20,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-10-28 08:35:20,518 INFO L87 Difference]: Start difference. First operand 110 states and 144 transitions. cyclomatic complexity: 38 Second operand has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:20,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:35:20,765 INFO L93 Difference]: Finished difference Result 270 states and 328 transitions. [2021-10-28 08:35:20,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-28 08:35:20,766 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 270 states and 328 transitions. [2021-10-28 08:35:20,768 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 63 [2021-10-28 08:35:20,771 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 270 states to 270 states and 328 transitions. [2021-10-28 08:35:20,772 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2021-10-28 08:35:20,772 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2021-10-28 08:35:20,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 270 states and 328 transitions. [2021-10-28 08:35:20,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 08:35:20,773 INFO L681 BuchiCegarLoop]: Abstraction has 270 states and 328 transitions. [2021-10-28 08:35:20,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states and 328 transitions. [2021-10-28 08:35:20,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 166. [2021-10-28 08:35:20,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 166 states have (on average 1.2530120481927711) internal successors, (208), 165 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:20,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 208 transitions. [2021-10-28 08:35:20,783 INFO L704 BuchiCegarLoop]: Abstraction has 166 states and 208 transitions. [2021-10-28 08:35:20,783 INFO L587 BuchiCegarLoop]: Abstraction has 166 states and 208 transitions. [2021-10-28 08:35:20,783 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-10-28 08:35:20,784 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 166 states and 208 transitions. [2021-10-28 08:35:20,785 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 37 [2021-10-28 08:35:20,785 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:35:20,785 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:35:20,786 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:35:20,786 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2021-10-28 08:35:20,786 INFO L791 eck$LassoCheckResult]: Stem: 2103#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9);~__BLAST_NONDET~0 := 0; 2104#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post8, main_#t~post7, main_#t~post6, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~l~0 := main_#t~nondet5;havoc main_#t~nondet5; 2105#L30 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 2106#L31 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 2110#L32 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 2109#L33 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 2107#L33-1 main_~i~0 := 0; 2108#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 2135#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 2146#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 2147#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 2145#L35-3 [2021-10-28 08:35:20,786 INFO L793 eck$LassoCheckResult]: Loop: 2145#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 2120#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 2121#L18 assume !(0 == __VERIFIER_assert_~cond); 2127#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 2128#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 2143#L18 assume !(0 == __VERIFIER_assert_~cond); 2142#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 2141#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 2123#L18 assume !(0 == __VERIFIER_assert_~cond); 2124#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 2140#L36-2 assume !(main_~k~0 < main_~j~0); 2139#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 2138#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 2111#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 2112#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 2145#L35-3 [2021-10-28 08:35:20,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:20,787 INFO L85 PathProgramCache]: Analyzing trace with hash -2088903248, now seen corresponding path program 6 times [2021-10-28 08:35:20,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:35:20,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012868655] [2021-10-28 08:35:20,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:35:20,788 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:35:20,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:35:20,795 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:35:20,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:35:20,803 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:35:20,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:20,804 INFO L85 PathProgramCache]: Analyzing trace with hash 452506725, now seen corresponding path program 3 times [2021-10-28 08:35:20,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:35:20,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357702253] [2021-10-28 08:35:20,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:35:20,805 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:35:20,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:35:20,812 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:35:20,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:35:20,821 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:35:20,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:20,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1390681386, now seen corresponding path program 3 times [2021-10-28 08:35:20,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:35:20,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451455292] [2021-10-28 08:35:20,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:35:20,822 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:35:20,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:35:20,873 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-28 08:35:20,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:35:20,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451455292] [2021-10-28 08:35:20,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451455292] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:35:20,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150654116] [2021-10-28 08:35:20,873 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 08:35:20,873 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:35:20,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:20,874 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:35:20,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-10-28 08:35:20,991 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-10-28 08:35:20,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 08:35:20,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 08:35:20,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:35:21,168 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:35:21,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150654116] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:35:21,169 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:35:21,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 12 [2021-10-28 08:35:21,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271587003] [2021-10-28 08:35:21,357 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 08:35:21,357 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 08:35:21,358 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 08:35:21,358 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 08:35:21,358 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 08:35:21,358 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:21,358 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 08:35:21,358 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 08:35:21,358 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration8_Loop [2021-10-28 08:35:21,358 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 08:35:21,358 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 08:35:21,361 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:21,377 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:21,379 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:21,384 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:21,386 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:21,452 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 08:35:21,453 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 08:35:21,453 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:21,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:21,454 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:21,458 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:35:21,458 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:35:21,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-10-28 08:35:21,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-10-28 08:35:21,523 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:21,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:21,527 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:21,529 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 08:35:21,529 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:35:21,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-10-28 08:35:21,833 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 08:35:21,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-10-28 08:35:21,836 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 08:35:21,836 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 08:35:21,836 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 08:35:21,836 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 08:35:21,836 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 08:35:21,836 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:21,836 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 08:35:21,836 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 08:35:21,836 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration8_Loop [2021-10-28 08:35:21,836 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 08:35:21,836 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 08:35:21,837 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:21,857 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:21,859 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:21,861 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:21,866 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:21,931 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 08:35:21,931 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 08:35:21,931 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:21,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:21,933 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:21,940 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:35:21,949 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:35:21,949 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:35:21,950 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:35:21,950 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:35:21,950 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:35:21,953 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:35:21,953 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:35:21,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-10-28 08:35:21,971 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 08:35:21,976 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 08:35:21,976 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 08:35:21,976 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:21,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:21,978 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:21,979 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 08:35:21,979 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 08:35:21,979 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 08:35:21,979 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 5 Supporting invariants [] [2021-10-28 08:35:21,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-10-28 08:35:22,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2021-10-28 08:35:22,015 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 08:35:22,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:22,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:35:22,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 08:35:22,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:35:22,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:35:22,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 08:35:22,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:35:22,290 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:35:22,290 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 9 loop predicates [2021-10-28 08:35:22,291 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 166 states and 208 transitions. cyclomatic complexity: 46 Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:22,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2021-10-28 08:35:22,666 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 166 states and 208 transitions. cyclomatic complexity: 46. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 672 states and 840 transitions. Complement of second has 32 states. [2021-10-28 08:35:22,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 17 states 1 stem states 15 non-accepting loop states 1 accepting loop states [2021-10-28 08:35:22,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:22,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 62 transitions. [2021-10-28 08:35:22,667 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 17 states and 62 transitions. Stem has 11 letters. Loop has 15 letters. [2021-10-28 08:35:22,667 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:35:22,667 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 17 states and 62 transitions. Stem has 26 letters. Loop has 15 letters. [2021-10-28 08:35:22,668 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:35:22,668 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 17 states and 62 transitions. Stem has 11 letters. Loop has 30 letters. [2021-10-28 08:35:22,668 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:35:22,668 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 672 states and 840 transitions. [2021-10-28 08:35:22,673 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 79 [2021-10-28 08:35:22,677 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 672 states to 504 states and 629 transitions. [2021-10-28 08:35:22,677 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 48 [2021-10-28 08:35:22,678 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 48 [2021-10-28 08:35:22,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 504 states and 629 transitions. [2021-10-28 08:35:22,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 08:35:22,679 INFO L681 BuchiCegarLoop]: Abstraction has 504 states and 629 transitions. [2021-10-28 08:35:22,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states and 629 transitions. [2021-10-28 08:35:22,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 262. [2021-10-28 08:35:22,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 262 states have (on average 1.2709923664122138) internal successors, (333), 261 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:22,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 333 transitions. [2021-10-28 08:35:22,691 INFO L704 BuchiCegarLoop]: Abstraction has 262 states and 333 transitions. [2021-10-28 08:35:22,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:35:22,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 08:35:22,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-28 08:35:22,692 INFO L87 Difference]: Start difference. First operand 262 states and 333 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:22,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:35:22,813 INFO L93 Difference]: Finished difference Result 341 states and 428 transitions. [2021-10-28 08:35:22,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 08:35:22,813 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 341 states and 428 transitions. [2021-10-28 08:35:22,816 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 40 [2021-10-28 08:35:22,819 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 341 states to 283 states and 358 transitions. [2021-10-28 08:35:22,819 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2021-10-28 08:35:22,820 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 31 [2021-10-28 08:35:22,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 283 states and 358 transitions. [2021-10-28 08:35:22,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 08:35:22,820 INFO L681 BuchiCegarLoop]: Abstraction has 283 states and 358 transitions. [2021-10-28 08:35:22,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states and 358 transitions. [2021-10-28 08:35:22,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 278. [2021-10-28 08:35:22,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 278 states have (on average 1.2625899280575539) internal successors, (351), 277 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:22,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 351 transitions. [2021-10-28 08:35:22,828 INFO L704 BuchiCegarLoop]: Abstraction has 278 states and 351 transitions. [2021-10-28 08:35:22,828 INFO L587 BuchiCegarLoop]: Abstraction has 278 states and 351 transitions. [2021-10-28 08:35:22,828 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-10-28 08:35:22,828 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 278 states and 351 transitions. [2021-10-28 08:35:22,830 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 40 [2021-10-28 08:35:22,830 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:35:22,830 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:35:22,831 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:35:22,831 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 2, 1, 1, 1] [2021-10-28 08:35:22,831 INFO L791 eck$LassoCheckResult]: Stem: 3795#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9);~__BLAST_NONDET~0 := 0; 3796#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post8, main_#t~post7, main_#t~post6, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~l~0 := main_#t~nondet5;havoc main_#t~nondet5; 3797#L30 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 3798#L31 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 3802#L32 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 3801#L33 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 3799#L33-1 main_~i~0 := 0; 3800#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 3823#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 3872#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 3865#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 3866#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 3882#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 3980#L18 assume !(0 == __VERIFIER_assert_~cond); 3979#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 3875#L36-2 assume !(main_~k~0 < main_~j~0); 3876#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 3881#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 3863#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 3864#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 3835#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 3812#L36-2 [2021-10-28 08:35:22,832 INFO L793 eck$LassoCheckResult]: Loop: 3812#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 3813#L18 assume !(0 == __VERIFIER_assert_~cond); 3815#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 3817#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 3834#L18 assume !(0 == __VERIFIER_assert_~cond); 3832#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 3826#L36-2 assume !(main_~k~0 < main_~j~0); 3819#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 3820#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 3812#L36-2 [2021-10-28 08:35:22,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:22,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1550826094, now seen corresponding path program 4 times [2021-10-28 08:35:22,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:35:22,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290156442] [2021-10-28 08:35:22,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:35:22,833 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:35:22,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:35:22,843 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:35:22,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:35:22,855 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:35:22,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:22,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1734754794, now seen corresponding path program 2 times [2021-10-28 08:35:22,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:35:22,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410275555] [2021-10-28 08:35:22,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:35:22,857 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:35:22,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:35:22,865 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:35:22,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:35:22,871 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:35:22,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:22,872 INFO L85 PathProgramCache]: Analyzing trace with hash 538979237, now seen corresponding path program 5 times [2021-10-28 08:35:22,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:35:22,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661673544] [2021-10-28 08:35:22,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:35:22,873 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:35:22,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:35:22,884 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:35:22,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:35:22,898 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:35:23,018 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 08:35:23,018 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 08:35:23,018 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 08:35:23,018 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 08:35:23,018 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 08:35:23,018 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:23,019 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 08:35:23,019 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 08:35:23,019 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration9_Loop [2021-10-28 08:35:23,019 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 08:35:23,019 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 08:35:23,020 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:23,023 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:23,025 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:23,029 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:23,085 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 08:35:23,086 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 08:35:23,086 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:23,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:23,088 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:23,096 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:35:23,096 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:35:23,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-10-28 08:35:23,123 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 08:35:23,123 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post8=0} Honda state: {ULTIMATE.start_main_#t~post8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 08:35:23,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2021-10-28 08:35:23,148 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:23,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:23,149 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:23,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-10-28 08:35:23,150 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:35:23,150 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:35:23,158 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 08:35:23,158 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post7=0} Honda state: {ULTIMATE.start_main_#t~post7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 08:35:23,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2021-10-28 08:35:23,177 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:23,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:23,178 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:23,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-10-28 08:35:23,180 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:35:23,180 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:35:23,192 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 08:35:23,193 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start___VERIFIER_assert_~cond=1, ULTIMATE.start___VERIFIER_assert_#in~cond=1} Honda state: {ULTIMATE.start___VERIFIER_assert_~cond=1, ULTIMATE.start___VERIFIER_assert_#in~cond=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 08:35:23,211 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2021-10-28 08:35:23,212 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:23,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:23,212 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:23,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2021-10-28 08:35:23,214 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:35:23,214 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:35:23,257 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Ended with exit code 0 [2021-10-28 08:35:23,257 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:23,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:23,258 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:23,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-10-28 08:35:23,260 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 08:35:23,260 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:35:23,659 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 08:35:23,661 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Ended with exit code 0 [2021-10-28 08:35:23,662 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 08:35:23,662 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 08:35:23,662 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 08:35:23,662 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 08:35:23,662 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 08:35:23,662 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:23,662 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 08:35:23,662 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 08:35:23,662 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration9_Loop [2021-10-28 08:35:23,662 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 08:35:23,662 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 08:35:23,663 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:23,665 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:23,666 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:23,675 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:23,735 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 08:35:23,735 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 08:35:23,735 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:23,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:23,742 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:23,756 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:35:23,764 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:35:23,765 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:35:23,765 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:35:23,765 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:35:23,765 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:35:23,765 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:35:23,765 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:35:23,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-10-28 08:35:23,774 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:35:23,807 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2021-10-28 08:35:23,807 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:23,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:23,808 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:23,811 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:35:23,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-10-28 08:35:23,820 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:35:23,820 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:35:23,820 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:35:23,820 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:35:23,820 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:35:23,820 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:35:23,820 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:35:23,826 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:35:23,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2021-10-28 08:35:23,845 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:23,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:23,846 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:23,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-10-28 08:35:23,848 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:35:23,855 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:35:23,855 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:35:23,855 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:35:23,855 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:35:23,855 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:35:23,857 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:35:23,857 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:35:23,859 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 08:35:23,861 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 08:35:23,861 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 08:35:23,862 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:23,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:23,863 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:23,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-10-28 08:35:23,864 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 08:35:23,864 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 08:35:23,864 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 08:35:23,864 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0, ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~j~0 + 3*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-28 08:35:23,883 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Ended with exit code 0 [2021-10-28 08:35:23,884 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 08:35:23,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:23,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:35:23,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 08:35:23,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:35:23,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:35:23,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 08:35:23,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:35:24,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2021-10-28 08:35:24,079 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-28 08:35:24,080 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 08:35:24,080 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 278 states and 351 transitions. cyclomatic complexity: 82 Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:24,103 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 278 states and 351 transitions. cyclomatic complexity: 82. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 292 states and 365 transitions. Complement of second has 7 states. [2021-10-28 08:35:24,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 08:35:24,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:24,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2021-10-28 08:35:24,104 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 21 letters. Loop has 9 letters. [2021-10-28 08:35:24,105 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:35:24,105 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 08:35:24,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:24,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:35:24,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 08:35:24,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:35:24,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:35:24,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 08:35:24,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:35:24,247 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-28 08:35:24,247 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 08:35:24,247 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 278 states and 351 transitions. cyclomatic complexity: 82 Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:24,270 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 278 states and 351 transitions. cyclomatic complexity: 82. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 292 states and 365 transitions. Complement of second has 7 states. [2021-10-28 08:35:24,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 08:35:24,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:24,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2021-10-28 08:35:24,271 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 21 letters. Loop has 9 letters. [2021-10-28 08:35:24,271 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:35:24,271 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 08:35:24,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:24,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:35:24,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 08:35:24,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:35:24,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:35:24,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 08:35:24,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:35:24,412 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-28 08:35:24,412 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 08:35:24,413 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 278 states and 351 transitions. cyclomatic complexity: 82 Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:24,435 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 278 states and 351 transitions. cyclomatic complexity: 82. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 503 states and 601 transitions. Complement of second has 6 states. [2021-10-28 08:35:24,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 08:35:24,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:24,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 25 transitions. [2021-10-28 08:35:24,436 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 21 letters. Loop has 9 letters. [2021-10-28 08:35:24,436 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:35:24,437 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 30 letters. Loop has 9 letters. [2021-10-28 08:35:24,437 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:35:24,437 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 21 letters. Loop has 18 letters. [2021-10-28 08:35:24,438 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:35:24,438 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 503 states and 601 transitions. [2021-10-28 08:35:24,442 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 55 [2021-10-28 08:35:24,445 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 503 states to 383 states and 465 transitions. [2021-10-28 08:35:24,445 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2021-10-28 08:35:24,446 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2021-10-28 08:35:24,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 383 states and 465 transitions. [2021-10-28 08:35:24,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 08:35:24,446 INFO L681 BuchiCegarLoop]: Abstraction has 383 states and 465 transitions. [2021-10-28 08:35:24,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states and 465 transitions. [2021-10-28 08:35:24,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 324. [2021-10-28 08:35:24,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 324 states have (on average 1.212962962962963) internal successors, (393), 323 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:24,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 393 transitions. [2021-10-28 08:35:24,454 INFO L704 BuchiCegarLoop]: Abstraction has 324 states and 393 transitions. [2021-10-28 08:35:24,454 INFO L587 BuchiCegarLoop]: Abstraction has 324 states and 393 transitions. [2021-10-28 08:35:24,455 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-10-28 08:35:24,455 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 324 states and 393 transitions. [2021-10-28 08:35:24,456 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 47 [2021-10-28 08:35:24,457 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:35:24,457 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:35:24,458 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:35:24,458 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [4, 4, 4, 1, 1, 1, 1, 1, 1] [2021-10-28 08:35:24,458 INFO L791 eck$LassoCheckResult]: Stem: 5471#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9);~__BLAST_NONDET~0 := 0; 5472#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post8, main_#t~post7, main_#t~post6, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~l~0 := main_#t~nondet5;havoc main_#t~nondet5; 5473#L30 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 5474#L31 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 5478#L32 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 5477#L33 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 5475#L33-1 main_~i~0 := 0; 5476#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 5501#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 5557#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 5549#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 5550#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 5565#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 5563#L18 assume !(0 == __VERIFIER_assert_~cond); 5560#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 5556#L36-2 assume !(main_~k~0 < main_~j~0); 5553#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 5548#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 5544#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 5545#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 5513#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 5488#L36-2 [2021-10-28 08:35:24,458 INFO L793 eck$LassoCheckResult]: Loop: 5488#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 5490#L18 assume !(0 == __VERIFIER_assert_~cond); 5493#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 5495#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 5512#L18 assume !(0 == __VERIFIER_assert_~cond); 5511#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 5510#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 5509#L18 assume !(0 == __VERIFIER_assert_~cond); 5508#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 5507#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 5505#L18 assume !(0 == __VERIFIER_assert_~cond); 5506#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 5504#L36-2 assume !(main_~k~0 < main_~j~0); 5497#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 5498#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 5479#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 5480#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 5515#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 5488#L36-2 [2021-10-28 08:35:24,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:24,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1550826094, now seen corresponding path program 6 times [2021-10-28 08:35:24,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:35:24,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35272331] [2021-10-28 08:35:24,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:35:24,459 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:35:24,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:35:24,469 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:35:24,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:35:24,479 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:35:24,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:24,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1362433097, now seen corresponding path program 4 times [2021-10-28 08:35:24,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:35:24,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211072717] [2021-10-28 08:35:24,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:35:24,480 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:35:24,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:35:24,489 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:35:24,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:35:24,498 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:35:24,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:24,499 INFO L85 PathProgramCache]: Analyzing trace with hash -130724088, now seen corresponding path program 7 times [2021-10-28 08:35:24,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:35:24,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219922152] [2021-10-28 08:35:24,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:35:24,499 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:35:24,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:35:24,552 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 11 proven. 31 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-10-28 08:35:24,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:35:24,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219922152] [2021-10-28 08:35:24,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219922152] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:35:24,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277973386] [2021-10-28 08:35:24,553 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-28 08:35:24,553 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:35:24,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:24,554 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:35:24,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-10-28 08:35:24,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:35:24,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 08:35:24,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:35:24,970 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 41 proven. 19 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-28 08:35:24,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277973386] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:35:24,971 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:35:24,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 14 [2021-10-28 08:35:24,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026532048] [2021-10-28 08:35:25,183 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 08:35:25,183 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 08:35:25,183 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 08:35:25,183 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 08:35:25,183 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 08:35:25,183 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:25,183 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 08:35:25,183 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 08:35:25,183 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration10_Loop [2021-10-28 08:35:25,183 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 08:35:25,183 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 08:35:25,184 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:25,186 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:25,192 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:25,196 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:25,198 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:25,275 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 08:35:25,275 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 08:35:25,275 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:25,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:25,276 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:25,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-10-28 08:35:25,283 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:35:25,283 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:35:25,307 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 08:35:25,307 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post8=0} Honda state: {ULTIMATE.start_main_#t~post8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 08:35:25,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2021-10-28 08:35:25,340 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:25,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:25,343 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:25,345 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:35:25,345 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:35:25,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-10-28 08:35:25,355 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 08:35:25,355 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6=0} Honda state: {ULTIMATE.start_main_#t~post6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 08:35:25,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2021-10-28 08:35:25,375 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:25,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:25,376 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:25,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-10-28 08:35:25,377 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:35:25,377 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:35:25,389 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 08:35:25,389 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start___VERIFIER_assert_~cond=1, ULTIMATE.start___VERIFIER_assert_#in~cond=1} Honda state: {ULTIMATE.start___VERIFIER_assert_~cond=1, ULTIMATE.start___VERIFIER_assert_#in~cond=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 08:35:25,408 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Ended with exit code 0 [2021-10-28 08:35:25,408 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:25,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:25,409 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:25,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-10-28 08:35:25,410 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:35:25,410 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:35:25,417 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 08:35:25,418 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post7=0} Honda state: {ULTIMATE.start_main_#t~post7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 08:35:25,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2021-10-28 08:35:25,460 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:25,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:25,461 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:25,480 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:35:25,480 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:35:25,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2021-10-28 08:35:25,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2021-10-28 08:35:25,536 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:25,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:25,537 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:25,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2021-10-28 08:35:25,538 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 08:35:25,538 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:35:25,930 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 08:35:25,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Forceful destruction successful, exit code 0 [2021-10-28 08:35:25,934 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 08:35:25,934 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 08:35:25,934 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 08:35:25,934 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 08:35:25,934 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 08:35:25,934 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:25,934 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 08:35:25,934 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 08:35:25,934 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration10_Loop [2021-10-28 08:35:25,934 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 08:35:25,934 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 08:35:25,935 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:25,944 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:25,945 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:25,949 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:25,951 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:26,013 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 08:35:26,013 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 08:35:26,013 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:26,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:26,014 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:26,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2021-10-28 08:35:26,015 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:35:26,022 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:35:26,022 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:35:26,022 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:35:26,022 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:35:26,022 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:35:26,023 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:35:26,023 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:35:26,024 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:35:26,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Forceful destruction successful, exit code 0 [2021-10-28 08:35:26,043 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:26,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:26,045 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:26,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2021-10-28 08:35:26,046 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:35:26,052 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:35:26,052 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:35:26,052 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:35:26,053 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:35:26,053 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:35:26,053 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:35:26,053 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:35:26,054 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:35:26,073 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Ended with exit code 0 [2021-10-28 08:35:26,073 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:26,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:26,074 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:26,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2021-10-28 08:35:26,075 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:35:26,082 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:35:26,082 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:35:26,082 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:35:26,082 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:35:26,082 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:35:26,083 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:35:26,083 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:35:26,084 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:35:26,103 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Ended with exit code 0 [2021-10-28 08:35:26,104 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:26,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:26,105 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:26,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2021-10-28 08:35:26,106 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:35:26,113 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:35:26,113 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:35:26,113 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:35:26,113 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:35:26,113 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:35:26,113 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:35:26,113 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:35:26,114 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:35:26,133 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Ended with exit code 0 [2021-10-28 08:35:26,133 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:26,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:26,134 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:26,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2021-10-28 08:35:26,135 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:35:26,142 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:35:26,142 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:35:26,142 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:35:26,142 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:35:26,142 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:35:26,144 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:35:26,144 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:35:26,146 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 08:35:26,150 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-10-28 08:35:26,150 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 08:35:26,150 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:26,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:26,152 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:26,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2021-10-28 08:35:26,157 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 08:35:26,157 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 08:35:26,157 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 08:35:26,157 INFO L515 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 [] [2021-10-28 08:35:26,177 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Ended with exit code 0 [2021-10-28 08:35:26,178 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 08:35:26,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:26,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:35:26,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 08:35:26,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:35:26,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:35:26,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 08:35:26,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:35:26,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Forceful destruction successful, exit code 0 [2021-10-28 08:35:26,406 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-10-28 08:35:26,407 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 [2021-10-28 08:35:26,407 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 324 states and 393 transitions. cyclomatic complexity: 78 Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:26,431 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 324 states and 393 transitions. cyclomatic complexity: 78. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 763 states and 938 transitions. Complement of second has 6 states. [2021-10-28 08:35:26,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 08:35:26,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:26,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 23 transitions. [2021-10-28 08:35:26,432 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 21 letters. Loop has 18 letters. [2021-10-28 08:35:26,433 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:35:26,433 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 39 letters. Loop has 18 letters. [2021-10-28 08:35:26,433 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:35:26,433 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 21 letters. Loop has 36 letters. [2021-10-28 08:35:26,434 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:35:26,434 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 763 states and 938 transitions. [2021-10-28 08:35:26,440 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-28 08:35:26,445 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 763 states to 496 states and 614 transitions. [2021-10-28 08:35:26,445 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2021-10-28 08:35:26,445 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2021-10-28 08:35:26,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 496 states and 614 transitions. [2021-10-28 08:35:26,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 08:35:26,446 INFO L681 BuchiCegarLoop]: Abstraction has 496 states and 614 transitions. [2021-10-28 08:35:26,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states and 614 transitions. [2021-10-28 08:35:26,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 477. [2021-10-28 08:35:26,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 477 states have (on average 1.2243186582809225) internal successors, (584), 476 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:26,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 584 transitions. [2021-10-28 08:35:26,458 INFO L704 BuchiCegarLoop]: Abstraction has 477 states and 584 transitions. [2021-10-28 08:35:26,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:35:26,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 08:35:26,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-10-28 08:35:26,460 INFO L87 Difference]: Start difference. First operand 477 states and 584 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:26,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:35:26,812 INFO L93 Difference]: Finished difference Result 1182 states and 1388 transitions. [2021-10-28 08:35:26,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 08:35:26,813 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1182 states and 1388 transitions. [2021-10-28 08:35:26,822 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2021-10-28 08:35:26,828 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1182 states to 602 states and 721 transitions. [2021-10-28 08:35:26,829 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2021-10-28 08:35:26,829 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2021-10-28 08:35:26,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 602 states and 721 transitions. [2021-10-28 08:35:26,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 08:35:26,829 INFO L681 BuchiCegarLoop]: Abstraction has 602 states and 721 transitions. [2021-10-28 08:35:26,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states and 721 transitions. [2021-10-28 08:35:26,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 290. [2021-10-28 08:35:26,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 290 states have (on average 1.2) internal successors, (348), 289 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:26,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 348 transitions. [2021-10-28 08:35:26,839 INFO L704 BuchiCegarLoop]: Abstraction has 290 states and 348 transitions. [2021-10-28 08:35:26,839 INFO L587 BuchiCegarLoop]: Abstraction has 290 states and 348 transitions. [2021-10-28 08:35:26,839 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-10-28 08:35:26,840 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 290 states and 348 transitions. [2021-10-28 08:35:26,841 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-28 08:35:26,841 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:35:26,841 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:35:26,844 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:35:26,844 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 08:35:26,845 INFO L791 eck$LassoCheckResult]: Stem: 8512#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9);~__BLAST_NONDET~0 := 0; 8513#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post8, main_#t~post7, main_#t~post6, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~l~0 := main_#t~nondet5;havoc main_#t~nondet5; 8514#L30 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 8515#L31 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 8519#L32 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 8518#L33 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 8516#L33-1 main_~i~0 := 0; 8517#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 8541#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 8520#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 8521#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 8524#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 8525#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 8606#L18 assume !(0 == __VERIFIER_assert_~cond); 8605#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 8604#L36-2 assume !(main_~k~0 < main_~j~0); 8603#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 8602#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 8601#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 8572#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 8574#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 8599#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 8658#L18 assume !(0 == __VERIFIER_assert_~cond); 8657#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 8621#L36-2 assume !(main_~k~0 < main_~j~0); 8619#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 8616#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 8547#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 8532#L18 [2021-10-28 08:35:26,845 INFO L793 eck$LassoCheckResult]: Loop: 8532#L18 assume !(0 == __VERIFIER_assert_~cond); 8533#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 8535#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 8532#L18 [2021-10-28 08:35:26,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:26,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1984863707, now seen corresponding path program 8 times [2021-10-28 08:35:26,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:35:26,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930274133] [2021-10-28 08:35:26,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:35:26,846 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:35:26,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:35:26,911 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-28 08:35:26,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:35:26,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930274133] [2021-10-28 08:35:26,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930274133] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:35:26,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252144303] [2021-10-28 08:35:26,912 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 08:35:26,912 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:35:26,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:26,915 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:35:26,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2021-10-28 08:35:27,095 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 08:35:27,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 08:35:27,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 08:35:27,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:35:27,229 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-28 08:35:27,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252144303] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:35:27,230 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:35:27,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-10-28 08:35:27,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876764826] [2021-10-28 08:35:27,231 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 08:35:27,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:27,231 INFO L85 PathProgramCache]: Analyzing trace with hash 84523, now seen corresponding path program 1 times [2021-10-28 08:35:27,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:35:27,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962726828] [2021-10-28 08:35:27,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:35:27,232 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:35:27,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:35:27,236 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:35:27,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:35:27,238 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:35:27,284 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 08:35:27,284 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 08:35:27,284 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 08:35:27,285 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 08:35:27,285 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 08:35:27,285 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:27,285 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 08:35:27,285 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 08:35:27,285 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration11_Loop [2021-10-28 08:35:27,285 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 08:35:27,285 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 08:35:27,286 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:27,288 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:27,495 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 08:35:27,495 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 08:35:27,496 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:27,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:27,497 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:27,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2021-10-28 08:35:27,498 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:35:27,498 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:35:27,507 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 08:35:27,507 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post8=0} Honda state: {ULTIMATE.start_main_#t~post8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 08:35:27,525 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Ended with exit code 0 [2021-10-28 08:35:27,525 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:27,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:27,526 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:27,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2021-10-28 08:35:27,527 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:35:27,527 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:35:27,555 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Ended with exit code 0 [2021-10-28 08:35:27,555 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:27,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:27,556 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:27,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2021-10-28 08:35:27,557 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 08:35:27,557 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:35:28,736 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 08:35:28,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Forceful destruction successful, exit code 0 [2021-10-28 08:35:28,740 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 08:35:28,741 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 08:35:28,741 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 08:35:28,741 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 08:35:28,741 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 08:35:28,741 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:28,741 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 08:35:28,741 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 08:35:28,741 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration11_Loop [2021-10-28 08:35:28,741 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 08:35:28,741 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 08:35:28,742 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:28,744 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:35:28,932 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 08:35:28,932 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 08:35:28,932 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:28,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:28,934 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:28,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2021-10-28 08:35:28,935 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:35:28,942 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:35:28,942 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:35:28,942 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:35:28,942 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:35:28,942 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:35:28,942 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:35:28,943 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:35:28,943 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:35:28,962 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Ended with exit code 0 [2021-10-28 08:35:28,962 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:28,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:28,963 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:28,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Waiting until timeout for monitored process [2021-10-28 08:35:28,964 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 08:35:28,971 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:35:28,971 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:35:28,971 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:35:28,971 INFO L204 nArgumentSynthesizer]: 4 loop disjuncts [2021-10-28 08:35:28,971 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:35:28,976 INFO L401 nArgumentSynthesizer]: We have 8 Motzkin's Theorem applications. [2021-10-28 08:35:28,976 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:35:28,983 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 08:35:28,988 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-10-28 08:35:28,988 INFO L444 ModelExtractionUtils]: 4 out of 8 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 08:35:28,988 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:35:28,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:28,989 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:28,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Waiting until timeout for monitored process [2021-10-28 08:35:28,990 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 08:35:28,990 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 08:35:28,990 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 08:35:28,990 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~k~0, ULTIMATE.start_main_~j~0) = -1*ULTIMATE.start_main_~k~0 + 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2021-10-28 08:35:29,009 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Ended with exit code 0 [2021-10-28 08:35:29,009 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 08:35:29,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:29,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:35:29,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 08:35:29,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:35:29,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:35:29,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 08:35:29,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:35:29,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:35:29,135 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 08:35:29,135 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 290 states and 348 transitions. cyclomatic complexity: 66 Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:29,157 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 290 states and 348 transitions. cyclomatic complexity: 66. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 313 states and 374 transitions. Complement of second has 7 states. [2021-10-28 08:35:29,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 08:35:29,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:29,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2021-10-28 08:35:29,158 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 28 letters. Loop has 3 letters. [2021-10-28 08:35:29,159 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:35:29,159 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 08:35:29,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:29,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:35:29,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 08:35:29,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:35:29,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:35:29,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 08:35:29,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:35:29,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:35:29,278 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 08:35:29,278 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 290 states and 348 transitions. cyclomatic complexity: 66 Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:29,296 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 290 states and 348 transitions. cyclomatic complexity: 66. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 313 states and 374 transitions. Complement of second has 7 states. [2021-10-28 08:35:29,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 08:35:29,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:29,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2021-10-28 08:35:29,297 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 28 letters. Loop has 3 letters. [2021-10-28 08:35:29,298 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:35:29,298 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 08:35:29,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:29,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:35:29,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 08:35:29,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:35:29,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:35:29,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 08:35:29,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:35:29,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:35:29,420 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 08:35:29,420 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 290 states and 348 transitions. cyclomatic complexity: 66 Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:29,449 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 290 states and 348 transitions. cyclomatic complexity: 66. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 473 states and 544 transitions. Complement of second has 6 states. [2021-10-28 08:35:29,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 08:35:29,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:29,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 24 transitions. [2021-10-28 08:35:29,450 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 24 transitions. Stem has 28 letters. Loop has 3 letters. [2021-10-28 08:35:29,450 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:35:29,451 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 24 transitions. Stem has 31 letters. Loop has 3 letters. [2021-10-28 08:35:29,451 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:35:29,451 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 24 transitions. Stem has 28 letters. Loop has 6 letters. [2021-10-28 08:35:29,451 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:35:29,451 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 473 states and 544 transitions. [2021-10-28 08:35:29,455 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 08:35:29,455 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 473 states to 0 states and 0 transitions. [2021-10-28 08:35:29,455 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-28 08:35:29,456 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-28 08:35:29,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-28 08:35:29,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:35:29,456 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 08:35:29,456 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 08:35:29,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:35:29,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 08:35:29,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-10-28 08:35:29,457 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:29,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:35:29,457 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2021-10-28 08:35:29,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 08:35:29,458 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2021-10-28 08:35:29,458 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 08:35:29,458 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 08:35:29,458 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-28 08:35:29,458 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-28 08:35:29,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-28 08:35:29,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:35:29,459 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 08:35:29,459 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 08:35:29,459 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 08:35:29,459 INFO L425 BuchiCegarLoop]: ======== Iteration 12============ [2021-10-28 08:35:29,459 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-28 08:35:29,459 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 08:35:29,459 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-28 08:35:29,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 08:35:29 BoogieIcfgContainer [2021-10-28 08:35:29,465 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 08:35:29,466 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 08:35:29,466 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 08:35:29,466 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 08:35:29,467 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:35:12" (3/4) ... [2021-10-28 08:35:29,469 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 08:35:29,470 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 08:35:29,471 INFO L168 Benchmark]: Toolchain (without parser) took 18346.19 ms. Allocated memory was 83.9 MB in the beginning and 174.1 MB in the end (delta: 90.2 MB). Free memory was 41.7 MB in the beginning and 55.1 MB in the end (delta: -13.4 MB). Peak memory consumption was 79.5 MB. Max. memory is 16.1 GB. [2021-10-28 08:35:29,471 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 83.9 MB. Free memory is still 57.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:35:29,472 INFO L168 Benchmark]: CACSL2BoogieTranslator took 487.04 ms. Allocated memory was 83.9 MB in the beginning and 102.8 MB in the end (delta: 18.9 MB). Free memory was 41.5 MB in the beginning and 73.1 MB in the end (delta: -31.6 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. [2021-10-28 08:35:29,472 INFO L168 Benchmark]: Boogie Procedure Inliner took 88.84 ms. Allocated memory is still 102.8 MB. Free memory was 73.1 MB in the beginning and 71.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:35:29,473 INFO L168 Benchmark]: Boogie Preprocessor took 57.99 ms. Allocated memory is still 102.8 MB. Free memory was 71.7 MB in the beginning and 70.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:35:29,473 INFO L168 Benchmark]: RCFGBuilder took 630.46 ms. Allocated memory is still 102.8 MB. Free memory was 70.5 MB in the beginning and 74.5 MB in the end (delta: -4.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 08:35:29,473 INFO L168 Benchmark]: BuchiAutomizer took 17033.97 ms. Allocated memory was 102.8 MB in the beginning and 174.1 MB in the end (delta: 71.3 MB). Free memory was 74.2 MB in the beginning and 56.1 MB in the end (delta: 18.1 MB). Peak memory consumption was 90.8 MB. Max. memory is 16.1 GB. [2021-10-28 08:35:29,474 INFO L168 Benchmark]: Witness Printer took 3.85 ms. Allocated memory is still 174.1 MB. Free memory was 56.1 MB in the beginning and 55.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:35:29,476 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 83.9 MB. Free memory is still 57.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 487.04 ms. Allocated memory was 83.9 MB in the beginning and 102.8 MB in the end (delta: 18.9 MB). Free memory was 41.5 MB in the beginning and 73.1 MB in the end (delta: -31.6 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 88.84 ms. Allocated memory is still 102.8 MB. Free memory was 73.1 MB in the beginning and 71.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.99 ms. Allocated memory is still 102.8 MB. Free memory was 71.7 MB in the beginning and 70.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 630.46 ms. Allocated memory is still 102.8 MB. Free memory was 70.5 MB in the beginning and 74.5 MB in the end (delta: -4.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 17033.97 ms. Allocated memory was 102.8 MB in the beginning and 174.1 MB in the end (delta: 71.3 MB). Free memory was 74.2 MB in the beginning and 56.1 MB in the end (delta: 18.1 MB). Peak memory consumption was 90.8 MB. Max. memory is 16.1 GB. * Witness Printer took 3.85 ms. Allocated memory is still 174.1 MB. Free memory was 56.1 MB in the beginning and 55.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 16 terminating modules (7 trivial, 6 deterministic, 3 nondeterministic). One deterministic module has affine ranking function -2 * i + 1 and consists of 5 locations. One deterministic module has affine ranking function n + -1 * j and consists of 7 locations. One deterministic module has affine ranking function n + -2 * i and consists of 9 locations. One deterministic module has affine ranking function -2 * i + 3 and consists of 10 locations. One deterministic module has affine ranking function -2 * i + 5 and consists of 17 locations. One deterministic module has affine ranking function n + -1 * i and consists of 4 locations. One nondeterministic module has affine ranking function 5 * i + -2 * j and consists of 6 locations. One nondeterministic module has affine ranking function 3 * i + -1 * j and consists of 4 locations. One nondeterministic module has affine ranking function j + -1 * k and consists of 4 locations. 7 modules have a trivial ranking function, the largest among these consists of 14 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 16.9s and 12 iterations. TraceHistogramMax:4. Analysis of lassos took 11.7s. Construction of modules took 0.6s. Büchi inclusion checks took 4.0s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 13. Automata minimization 0.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 882 StatesRemovedByMinimization, 12 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 324 states and ocurred in iteration 9. Nontrivial modules had stage [6, 0, 3, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 31/46 HoareTripleCheckerStatistics: 272 SDtfs, 446 SDslu, 248 SDs, 0 SdLazy, 925 SolverSat, 182 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time LassoAnalysisResults: nont0 unkn0 SFLI2 SFLT4 conc0 concLT4 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital38 mio100 ax100 hnf100 lsp98 ukn95 mio100 lsp100 div100 bol100 ite100 ukn100 eq144 hnf94 smp98 dnf145 smp94 tf104 neg99 sie109 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 28ms VariablesStem: 0 VariablesLoop: 8 DisjunctsStem: 1 DisjunctsLoop: 4 SupportingInvariants: 0 MotzkinApplications: 8 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 12 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 9 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 4.4s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-10-28 08:35:29,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Forceful destruction successful, exit code 0 [2021-10-28 08:35:29,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2021-10-28 08:35:29,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2021-10-28 08:35:30,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-10-28 08:35:30,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-10-28 08:35:30,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2fe0388-b31f-4f0a-b953-8dadbf703472/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...