./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-invgen/nested6.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-invgen/nested6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8 --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 327b0d5e70f014fe291a4771fe2bbb17cb1148e77fe8f6a261d10a47df8adacc --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 20:00:07,595 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 20:00:07,597 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 20:00:07,614 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 20:00:07,614 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 20:00:07,615 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 20:00:07,616 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 20:00:07,617 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 20:00:07,619 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 20:00:07,620 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 20:00:07,620 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 20:00:07,621 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 20:00:07,622 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 20:00:07,622 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 20:00:07,623 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 20:00:07,624 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 20:00:07,625 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 20:00:07,626 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 20:00:07,627 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 20:00:07,629 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 20:00:07,630 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 20:00:07,631 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 20:00:07,632 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 20:00:07,633 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 20:00:07,636 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 20:00:07,636 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 20:00:07,636 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 20:00:07,637 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 20:00:07,638 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 20:00:07,638 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 20:00:07,639 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 20:00:07,639 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 20:00:07,640 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 20:00:07,641 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 20:00:07,641 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 20:00:07,642 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 20:00:07,642 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 20:00:07,642 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 20:00:07,642 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 20:00:07,643 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 20:00:07,644 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 20:00:07,644 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-12-13 20:00:07,664 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 20:00:07,670 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 20:00:07,671 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 20:00:07,671 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 20:00:07,672 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 20:00:07,672 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 20:00:07,672 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 20:00:07,672 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-12-13 20:00:07,673 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-12-13 20:00:07,673 INFO L138 SettingsManager]: * Use old map elimination=false [2022-12-13 20:00:07,673 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-12-13 20:00:07,673 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-12-13 20:00:07,673 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-12-13 20:00:07,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 20:00:07,674 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 20:00:07,674 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 20:00:07,674 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 20:00:07,674 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 20:00:07,674 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 20:00:07,675 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-12-13 20:00:07,675 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-12-13 20:00:07,675 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-12-13 20:00:07,675 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 20:00:07,675 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 20:00:07,675 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-12-13 20:00:07,676 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 20:00:07,676 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-12-13 20:00:07,676 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 20:00:07,676 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 20:00:07,676 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 20:00:07,677 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 20:00:07,678 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-12-13 20:00:07,678 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_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 327b0d5e70f014fe291a4771fe2bbb17cb1148e77fe8f6a261d10a47df8adacc [2022-12-13 20:00:07,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 20:00:07,887 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 20:00:07,889 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 20:00:07,891 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 20:00:07,891 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 20:00:07,892 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/loop-invgen/nested6.i [2022-12-13 20:00:10,544 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 20:00:10,684 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 20:00:10,685 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/sv-benchmarks/c/loop-invgen/nested6.i [2022-12-13 20:00:10,689 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/data/e6aa9296a/05e812afcc2f4204b6631cafdeadf516/FLAG40c49c9eb [2022-12-13 20:00:10,702 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/data/e6aa9296a/05e812afcc2f4204b6631cafdeadf516 [2022-12-13 20:00:10,704 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 20:00:10,706 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 20:00:10,707 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 20:00:10,707 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 20:00:10,711 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 20:00:10,711 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:00:10" (1/1) ... [2022-12-13 20:00:10,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56293eb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:00:10, skipping insertion in model container [2022-12-13 20:00:10,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:00:10" (1/1) ... [2022-12-13 20:00:10,720 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 20:00:10,735 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 20:00:10,858 WARN L237 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_8b91621e-bf18-4e52-ae8f-5756fc7eda39/sv-benchmarks/c/loop-invgen/nested6.i[893,906] [2022-12-13 20:00:10,864 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:00:10,873 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 20:00:10,882 WARN L237 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_8b91621e-bf18-4e52-ae8f-5756fc7eda39/sv-benchmarks/c/loop-invgen/nested6.i[893,906] [2022-12-13 20:00:10,884 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:00:10,894 INFO L208 MainTranslator]: Completed translation [2022-12-13 20:00:10,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:00:10 WrapperNode [2022-12-13 20:00:10,894 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 20:00:10,895 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 20:00:10,895 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 20:00:10,895 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 20:00:10,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:00:10" (1/1) ... [2022-12-13 20:00:10,906 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:00:10" (1/1) ... [2022-12-13 20:00:10,918 INFO L138 Inliner]: procedures = 16, calls = 9, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 73 [2022-12-13 20:00:10,919 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 20:00:10,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 20:00:10,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 20:00:10,919 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 20:00:10,925 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:00:10" (1/1) ... [2022-12-13 20:00:10,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:00:10" (1/1) ... [2022-12-13 20:00:10,926 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:00:10" (1/1) ... [2022-12-13 20:00:10,927 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:00:10" (1/1) ... [2022-12-13 20:00:10,928 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:00:10" (1/1) ... [2022-12-13 20:00:10,931 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:00:10" (1/1) ... [2022-12-13 20:00:10,931 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:00:10" (1/1) ... [2022-12-13 20:00:10,932 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:00:10" (1/1) ... [2022-12-13 20:00:10,933 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 20:00:10,933 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 20:00:10,933 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 20:00:10,934 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 20:00:10,934 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:00:10" (1/1) ... [2022-12-13 20:00:10,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:00:10,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:00:10,957 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:00:10,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-12-13 20:00:10,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 20:00:10,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 20:00:10,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 20:00:10,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 20:00:11,046 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 20:00:11,047 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 20:00:11,145 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 20:00:11,149 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 20:00:11,150 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-13 20:00:11,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:00:11 BoogieIcfgContainer [2022-12-13 20:00:11,151 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 20:00:11,152 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-12-13 20:00:11,152 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-12-13 20:00:11,155 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-12-13 20:00:11,155 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 20:00:11,155 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.12 08:00:10" (1/3) ... [2022-12-13 20:00:11,156 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2ce9d0c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.12 08:00:11, skipping insertion in model container [2022-12-13 20:00:11,156 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 20:00:11,156 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:00:10" (2/3) ... [2022-12-13 20:00:11,156 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2ce9d0c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.12 08:00:11, skipping insertion in model container [2022-12-13 20:00:11,156 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 20:00:11,157 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:00:11" (3/3) ... [2022-12-13 20:00:11,158 INFO L332 chiAutomizerObserver]: Analyzing ICFG nested6.i [2022-12-13 20:00:11,197 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-12-13 20:00:11,197 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-12-13 20:00:11,198 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-12-13 20:00:11,198 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-12-13 20:00:11,198 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-12-13 20:00:11,198 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-12-13 20:00:11,198 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-12-13 20:00:11,198 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-12-13 20:00:11,201 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 25 states, 24 states have (on average 1.5) internal successors, (36), 24 states have internal predecessors, (36), 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) [2022-12-13 20:00:11,214 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2022-12-13 20:00:11,214 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 20:00:11,215 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 20:00:11,218 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-12-13 20:00:11,218 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-12-13 20:00:11,218 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-12-13 20:00:11,219 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 25 states, 24 states have (on average 1.5) internal successors, (36), 24 states have internal predecessors, (36), 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) [2022-12-13 20:00:11,220 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2022-12-13 20:00:11,220 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 20:00:11,220 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 20:00:11,220 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-12-13 20:00:11,220 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-12-13 20:00:11,226 INFO L748 eck$LassoCheckResult]: Stem: 23#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 5#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet5#1, main_#t~post6#1, main_#t~post4#1, main_#t~post3#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;main_~k~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~n~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 22#L28true assume !!(main_~n~0#1 < 1000000); 17#L29true assume main_~k~0#1 == main_~n~0#1; 18#L29-1true main_~i~0#1 := 0; 24#L33-3true [2022-12-13 20:00:11,226 INFO L750 eck$LassoCheckResult]: Loop: 24#L33-3true assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 14#L34-3true assume !true; 19#L33-2true main_#t~post3#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 24#L33-3true [2022-12-13 20:00:11,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:00:11,230 INFO L85 PathProgramCache]: Analyzing trace with hash 28695784, now seen corresponding path program 1 times [2022-12-13 20:00:11,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:00:11,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452558239] [2022-12-13 20:00:11,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:00:11,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:00:11,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:00:11,298 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 20:00:11,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:00:11,316 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 20:00:11,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:00:11,319 INFO L85 PathProgramCache]: Analyzing trace with hash 53559, now seen corresponding path program 1 times [2022-12-13 20:00:11,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:00:11,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985325839] [2022-12-13 20:00:11,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:00:11,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:00:11,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:00:11,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:00:11,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:00:11,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985325839] [2022-12-13 20:00:11,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985325839] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:00:11,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:00:11,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:00:11,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212436062] [2022-12-13 20:00:11,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:00:11,351 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-12-13 20:00:11,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:00:11,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 20:00:11,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 20:00:11,377 INFO L87 Difference]: Start difference. First operand has 25 states, 24 states have (on average 1.5) internal successors, (36), 24 states have internal predecessors, (36), 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) [2022-12-13 20:00:11,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:00:11,383 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2022-12-13 20:00:11,384 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 30 transitions. [2022-12-13 20:00:11,385 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2022-12-13 20:00:11,388 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 18 states and 21 transitions. [2022-12-13 20:00:11,388 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2022-12-13 20:00:11,389 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2022-12-13 20:00:11,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 21 transitions. [2022-12-13 20:00:11,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:00:11,389 INFO L218 hiAutomatonCegarLoop]: Abstraction has 18 states and 21 transitions. [2022-12-13 20:00:11,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 21 transitions. [2022-12-13 20:00:11,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-12-13 20:00:11,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 17 states have internal predecessors, (21), 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) [2022-12-13 20:00:11,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2022-12-13 20:00:11,408 INFO L240 hiAutomatonCegarLoop]: Abstraction has 18 states and 21 transitions. [2022-12-13 20:00:11,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 20:00:11,412 INFO L428 stractBuchiCegarLoop]: Abstraction has 18 states and 21 transitions. [2022-12-13 20:00:11,412 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-12-13 20:00:11,412 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 21 transitions. [2022-12-13 20:00:11,412 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2022-12-13 20:00:11,412 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 20:00:11,412 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 20:00:11,413 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-12-13 20:00:11,413 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-12-13 20:00:11,413 INFO L748 eck$LassoCheckResult]: Stem: 74#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 64#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet5#1, main_#t~post6#1, main_#t~post4#1, main_#t~post3#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;main_~k~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~n~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 65#L28 assume !!(main_~n~0#1 < 1000000); 60#L29 assume main_~k~0#1 == main_~n~0#1; 61#L29-1 main_~i~0#1 := 0; 62#L33-3 [2022-12-13 20:00:11,413 INFO L750 eck$LassoCheckResult]: Loop: 62#L33-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 69#L34-3 assume !(main_~j~0#1 < main_~n~0#1); 63#L33-2 main_#t~post3#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 62#L33-3 [2022-12-13 20:00:11,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:00:11,414 INFO L85 PathProgramCache]: Analyzing trace with hash 28695784, now seen corresponding path program 2 times [2022-12-13 20:00:11,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:00:11,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259926748] [2022-12-13 20:00:11,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:00:11,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:00:11,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:00:11,420 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 20:00:11,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:00:11,425 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 20:00:11,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:00:11,426 INFO L85 PathProgramCache]: Analyzing trace with hash 51885, now seen corresponding path program 1 times [2022-12-13 20:00:11,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:00:11,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772607587] [2022-12-13 20:00:11,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:00:11,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:00:11,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:00:11,432 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 20:00:11,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:00:11,436 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 20:00:11,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:00:11,437 INFO L85 PathProgramCache]: Analyzing trace with hash 177631334, now seen corresponding path program 1 times [2022-12-13 20:00:11,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:00:11,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135363622] [2022-12-13 20:00:11,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:00:11,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:00:11,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:00:11,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:00:11,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:00:11,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135363622] [2022-12-13 20:00:11,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135363622] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:00:11,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:00:11,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:00:11,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067846878] [2022-12-13 20:00:11,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:00:11,546 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 20:00:11,546 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 20:00:11,546 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 20:00:11,547 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 20:00:11,547 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 20:00:11,547 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:00:11,547 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 20:00:11,547 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 20:00:11,547 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested6.i_Iteration2_Loop [2022-12-13 20:00:11,547 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 20:00:11,547 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 20:00:11,558 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:00:11,574 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:00:11,614 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 20:00:11,614 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 20:00:11,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:00:11,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:00:11,617 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:00:11,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-12-13 20:00:11,626 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 20:00:11,626 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 20:00:11,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-12-13 20:00:11,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:00:11,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:00:11,646 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:00:11,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-12-13 20:00:11,648 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 20:00:11,648 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 20:00:11,837 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 20:00:11,840 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2022-12-13 20:00:11,841 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 20:00:11,841 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 20:00:11,841 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 20:00:11,841 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 20:00:11,841 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 20:00:11,841 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:00:11,841 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 20:00:11,841 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 20:00:11,841 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested6.i_Iteration2_Loop [2022-12-13 20:00:11,841 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 20:00:11,841 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 20:00:11,849 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:00:11,859 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:00:11,885 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 20:00:11,889 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 20:00:11,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:00:11,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:00:11,891 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:00:11,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-12-13 20:00:11,894 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 [2022-12-13 20:00:11,904 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 20:00:11,905 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 20:00:11,905 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 20:00:11,905 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 20:00:11,905 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 20:00:11,908 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 20:00:11,908 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 20:00:11,912 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 20:00:11,921 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2022-12-13 20:00:11,921 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-12-13 20:00:11,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:00:11,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:00:11,962 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:00:11,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-12-13 20:00:11,964 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 20:00:11,964 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 20:00:11,964 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 20:00:11,965 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0#1, ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~n~0#1 - 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2022-12-13 20:00:11,967 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2022-12-13 20:00:11,970 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 20:00:11,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:00:11,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:00:11,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 20:00:12,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:00:12,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:00:12,014 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 20:00:12,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:00:12,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:00:12,038 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-12-13 20:00:12,039 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 21 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-12-13 20:00:12,077 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 21 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 32 states and 40 transitions. Complement of second has 4 states. [2022-12-13 20:00:12,078 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 [2022-12-13 20:00:12,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-12-13 20:00:12,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 21 transitions. [2022-12-13 20:00:12,080 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 21 transitions. Stem has 5 letters. Loop has 3 letters. [2022-12-13 20:00:12,081 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 20:00:12,081 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 21 transitions. Stem has 8 letters. Loop has 3 letters. [2022-12-13 20:00:12,081 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 20:00:12,081 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 21 transitions. Stem has 5 letters. Loop has 6 letters. [2022-12-13 20:00:12,081 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 20:00:12,082 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 40 transitions. [2022-12-13 20:00:12,082 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2022-12-13 20:00:12,083 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 31 states and 38 transitions. [2022-12-13 20:00:12,083 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2022-12-13 20:00:12,083 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2022-12-13 20:00:12,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 38 transitions. [2022-12-13 20:00:12,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 20:00:12,083 INFO L218 hiAutomatonCegarLoop]: Abstraction has 31 states and 38 transitions. [2022-12-13 20:00:12,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 38 transitions. [2022-12-13 20:00:12,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2022-12-13 20:00:12,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 29 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) [2022-12-13 20:00:12,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2022-12-13 20:00:12,085 INFO L240 hiAutomatonCegarLoop]: Abstraction has 30 states and 37 transitions. [2022-12-13 20:00:12,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:00:12,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:00:12,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:00:12,086 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2022-12-13 20:00:12,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:00:12,110 INFO L93 Difference]: Finished difference Result 55 states and 67 transitions. [2022-12-13 20:00:12,111 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 55 states and 67 transitions. [2022-12-13 20:00:12,112 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 22 [2022-12-13 20:00:12,113 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 55 states to 55 states and 67 transitions. [2022-12-13 20:00:12,113 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2022-12-13 20:00:12,113 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2022-12-13 20:00:12,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 67 transitions. [2022-12-13 20:00:12,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 20:00:12,114 INFO L218 hiAutomatonCegarLoop]: Abstraction has 55 states and 67 transitions. [2022-12-13 20:00:12,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states and 67 transitions. [2022-12-13 20:00:12,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 31. [2022-12-13 20:00:12,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 30 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) [2022-12-13 20:00:12,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2022-12-13 20:00:12,116 INFO L240 hiAutomatonCegarLoop]: Abstraction has 31 states and 38 transitions. [2022-12-13 20:00:12,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 20:00:12,117 INFO L428 stractBuchiCegarLoop]: Abstraction has 31 states and 38 transitions. [2022-12-13 20:00:12,117 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-12-13 20:00:12,117 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 38 transitions. [2022-12-13 20:00:12,117 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2022-12-13 20:00:12,117 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 20:00:12,117 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 20:00:12,118 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2022-12-13 20:00:12,118 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-12-13 20:00:12,118 INFO L748 eck$LassoCheckResult]: Stem: 265#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 247#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet5#1, main_#t~post6#1, main_#t~post4#1, main_#t~post3#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;main_~k~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~n~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 248#L28 assume !!(main_~n~0#1 < 1000000); 242#L29 assume main_~k~0#1 == main_~n~0#1; 243#L29-1 main_~i~0#1 := 0; 244#L33-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 255#L34-3 [2022-12-13 20:00:12,118 INFO L750 eck$LassoCheckResult]: Loop: 255#L34-3 assume !!(main_~j~0#1 < main_~n~0#1); 267#L35 assume 0 != main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~k~0#1 := main_~j~0#1; 249#L36-3 assume !(main_~k~0#1 < main_~n~0#1); 250#L34-2 main_#t~post4#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 255#L34-3 [2022-12-13 20:00:12,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:00:12,118 INFO L85 PathProgramCache]: Analyzing trace with hash 889569326, now seen corresponding path program 1 times [2022-12-13 20:00:12,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:00:12,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199371479] [2022-12-13 20:00:12,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:00:12,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:00:12,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:00:12,125 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 20:00:12,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:00:12,131 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 20:00:12,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:00:12,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1850253, now seen corresponding path program 1 times [2022-12-13 20:00:12,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:00:12,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570852440] [2022-12-13 20:00:12,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:00:12,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:00:12,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:00:12,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:00:12,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:00:12,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570852440] [2022-12-13 20:00:12,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570852440] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:00:12,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:00:12,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 20:00:12,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909397649] [2022-12-13 20:00:12,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:00:12,155 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-12-13 20:00:12,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:00:12,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:00:12,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:00:12,155 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. cyclomatic complexity: 9 Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-12-13 20:00:12,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:00:12,184 INFO L93 Difference]: Finished difference Result 33 states and 40 transitions. [2022-12-13 20:00:12,184 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 40 transitions. [2022-12-13 20:00:12,185 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2022-12-13 20:00:12,185 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 33 states and 40 transitions. [2022-12-13 20:00:12,185 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2022-12-13 20:00:12,185 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2022-12-13 20:00:12,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 40 transitions. [2022-12-13 20:00:12,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 20:00:12,186 INFO L218 hiAutomatonCegarLoop]: Abstraction has 33 states and 40 transitions. [2022-12-13 20:00:12,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states and 40 transitions. [2022-12-13 20:00:12,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-12-13 20:00:12,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 32 states have internal predecessors, (40), 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) [2022-12-13 20:00:12,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2022-12-13 20:00:12,188 INFO L240 hiAutomatonCegarLoop]: Abstraction has 33 states and 40 transitions. [2022-12-13 20:00:12,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 20:00:12,188 INFO L428 stractBuchiCegarLoop]: Abstraction has 33 states and 40 transitions. [2022-12-13 20:00:12,189 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-12-13 20:00:12,189 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 33 states and 40 transitions. [2022-12-13 20:00:12,189 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2022-12-13 20:00:12,189 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 20:00:12,189 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 20:00:12,190 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2022-12-13 20:00:12,190 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:00:12,190 INFO L748 eck$LassoCheckResult]: Stem: 340#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 320#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet5#1, main_#t~post6#1, main_#t~post4#1, main_#t~post3#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;main_~k~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~n~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 321#L28 assume !!(main_~n~0#1 < 1000000); 315#L29 assume main_~k~0#1 == main_~n~0#1; 316#L29-1 main_~i~0#1 := 0; 317#L33-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 330#L34-3 [2022-12-13 20:00:12,190 INFO L750 eck$LassoCheckResult]: Loop: 330#L34-3 assume !!(main_~j~0#1 < main_~n~0#1); 342#L35 assume !(0 != main_#t~nondet5#1);havoc main_#t~nondet5#1;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 >= main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 338#L18-3 assume !(0 == __VERIFIER_assert_~cond#1); 311#L18-5 assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 <= main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 312#L18-6 assume !(0 == __VERIFIER_assert_~cond#1); 326#L18-8 assume { :end_inline___VERIFIER_assert } true; 327#L34-2 main_#t~post4#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 330#L34-3 [2022-12-13 20:00:12,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:00:12,190 INFO L85 PathProgramCache]: Analyzing trace with hash 889569326, now seen corresponding path program 2 times [2022-12-13 20:00:12,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:00:12,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66348258] [2022-12-13 20:00:12,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:00:12,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:00:12,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:00:12,196 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 20:00:12,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:00:12,201 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 20:00:12,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:00:12,202 INFO L85 PathProgramCache]: Analyzing trace with hash 25769677, now seen corresponding path program 1 times [2022-12-13 20:00:12,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:00:12,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213714172] [2022-12-13 20:00:12,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:00:12,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:00:12,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:00:12,211 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 20:00:12,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:00:12,217 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 20:00:12,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:00:12,218 INFO L85 PathProgramCache]: Analyzing trace with hash 824203776, now seen corresponding path program 1 times [2022-12-13 20:00:12,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:00:12,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620999616] [2022-12-13 20:00:12,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:00:12,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:00:12,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:00:12,227 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 20:00:12,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:00:12,235 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 20:00:12,305 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 20:00:12,305 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 20:00:12,305 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 20:00:12,305 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 20:00:12,306 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 20:00:12,306 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:00:12,306 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 20:00:12,306 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 20:00:12,306 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested6.i_Iteration4_Loop [2022-12-13 20:00:12,306 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 20:00:12,306 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 20:00:12,307 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:00:12,313 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:00:12,315 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:00:12,317 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:00:12,353 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 20:00:12,353 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 20:00:12,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:00:12,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:00:12,354 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:00:12,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-12-13 20:00:12,357 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 20:00:12,357 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 20:00:12,371 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2022-12-13 20:00:12,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:00:12,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:00:12,373 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:00:12,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-12-13 20:00:12,375 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 20:00:12,375 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 20:00:12,668 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 20:00:12,671 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2022-12-13 20:00:12,672 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 20:00:12,672 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 20:00:12,672 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 20:00:12,672 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 20:00:12,672 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 20:00:12,672 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:00:12,672 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 20:00:12,672 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 20:00:12,672 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested6.i_Iteration4_Loop [2022-12-13 20:00:12,672 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 20:00:12,672 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 20:00:12,673 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:00:12,675 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:00:12,680 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:00:12,682 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:00:12,712 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 20:00:12,712 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 20:00:12,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:00:12,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:00:12,713 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:00:12,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-12-13 20:00:12,715 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 [2022-12-13 20:00:12,724 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 20:00:12,725 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 20:00:12,725 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 20:00:12,725 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 20:00:12,725 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 20:00:12,725 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 20:00:12,725 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 20:00:12,727 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 20:00:12,730 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2022-12-13 20:00:12,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:00:12,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:00:12,731 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:00:12,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-12-13 20:00:12,733 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 [2022-12-13 20:00:12,743 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 20:00:12,743 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 20:00:12,743 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 20:00:12,743 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 20:00:12,743 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 20:00:12,744 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 20:00:12,744 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 20:00:12,747 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 20:00:12,750 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-12-13 20:00:12,750 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-12-13 20:00:12,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:00:12,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:00:12,751 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:00:12,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-12-13 20:00:12,753 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 20:00:12,753 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 20:00:12,753 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 20:00:12,753 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0#1, ULTIMATE.start_main_~j~0#1) = 1*ULTIMATE.start_main_~n~0#1 - 1*ULTIMATE.start_main_~j~0#1 Supporting invariants [] [2022-12-13 20:00:12,756 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2022-12-13 20:00:12,757 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 20:00:12,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:00:12,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:00:12,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 20:00:12,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:00:12,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:00:12,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 20:00:12,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:00:12,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:00:12,818 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-12-13 20:00:12,818 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 40 transitions. cyclomatic complexity: 9 Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2022-12-13 20:00:12,841 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 33 states and 40 transitions. cyclomatic complexity: 9. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 84 states and 103 transitions. Complement of second has 7 states. [2022-12-13 20:00:12,841 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 [2022-12-13 20:00:12,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2022-12-13 20:00:12,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2022-12-13 20:00:12,842 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 6 letters. Loop has 7 letters. [2022-12-13 20:00:12,842 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 20:00:12,842 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 13 letters. Loop has 7 letters. [2022-12-13 20:00:12,842 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 20:00:12,842 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 6 letters. Loop has 14 letters. [2022-12-13 20:00:12,843 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 20:00:12,843 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 84 states and 103 transitions. [2022-12-13 20:00:12,844 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2022-12-13 20:00:12,845 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 84 states to 66 states and 81 transitions. [2022-12-13 20:00:12,845 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2022-12-13 20:00:12,845 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2022-12-13 20:00:12,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 81 transitions. [2022-12-13 20:00:12,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 20:00:12,845 INFO L218 hiAutomatonCegarLoop]: Abstraction has 66 states and 81 transitions. [2022-12-13 20:00:12,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 81 transitions. [2022-12-13 20:00:12,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 51. [2022-12-13 20:00:12,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 51 states have (on average 1.2156862745098038) internal successors, (62), 50 states have internal predecessors, (62), 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) [2022-12-13 20:00:12,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 62 transitions. [2022-12-13 20:00:12,847 INFO L240 hiAutomatonCegarLoop]: Abstraction has 51 states and 62 transitions. [2022-12-13 20:00:12,847 INFO L428 stractBuchiCegarLoop]: Abstraction has 51 states and 62 transitions. [2022-12-13 20:00:12,847 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-12-13 20:00:12,847 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 51 states and 62 transitions. [2022-12-13 20:00:12,848 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2022-12-13 20:00:12,848 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 20:00:12,848 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 20:00:12,848 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:00:12,848 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-12-13 20:00:12,848 INFO L748 eck$LassoCheckResult]: Stem: 520#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 499#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet5#1, main_#t~post6#1, main_#t~post4#1, main_#t~post3#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;main_~k~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~n~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 500#L28 assume !!(main_~n~0#1 < 1000000); 494#L29 assume main_~k~0#1 == main_~n~0#1; 495#L29-1 main_~i~0#1 := 0; 496#L33-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 522#L34-3 assume !!(main_~j~0#1 < main_~n~0#1); 524#L35 assume 0 != main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~k~0#1 := main_~j~0#1; 501#L36-3 [2022-12-13 20:00:12,848 INFO L750 eck$LassoCheckResult]: Loop: 501#L36-3 assume !!(main_~k~0#1 < main_~n~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 >= 2 * main_~i~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 502#L18 assume !(0 == __VERIFIER_assert_~cond#1); 514#L18-2 assume { :end_inline___VERIFIER_assert } true; 511#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 501#L36-3 [2022-12-13 20:00:12,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:00:12,849 INFO L85 PathProgramCache]: Analyzing trace with hash 177631345, now seen corresponding path program 1 times [2022-12-13 20:00:12,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:00:12,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37519033] [2022-12-13 20:00:12,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:00:12,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:00:12,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:00:12,854 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 20:00:12,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:00:12,858 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 20:00:12,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:00:12,859 INFO L85 PathProgramCache]: Analyzing trace with hash 2192714, now seen corresponding path program 1 times [2022-12-13 20:00:12,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:00:12,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196813079] [2022-12-13 20:00:12,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:00:12,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:00:12,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:00:12,864 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 20:00:12,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:00:12,869 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 20:00:12,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:00:12,870 INFO L85 PathProgramCache]: Analyzing trace with hash 2764218, now seen corresponding path program 1 times [2022-12-13 20:00:12,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:00:12,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747227251] [2022-12-13 20:00:12,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:00:12,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:00:12,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:00:12,881 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 20:00:12,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:00:12,890 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 20:00:12,927 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 20:00:12,927 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 20:00:12,927 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 20:00:12,927 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 20:00:12,927 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 20:00:12,927 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:00:12,927 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 20:00:12,928 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 20:00:12,928 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested6.i_Iteration5_Loop [2022-12-13 20:00:12,928 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 20:00:12,928 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 20:00:12,929 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:00:12,931 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:00:12,936 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:00:12,961 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 20:00:12,962 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 20:00:12,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:00:12,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:00:12,963 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:00:12,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-12-13 20:00:12,965 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 20:00:12,965 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 20:00:12,979 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 20:00:12,979 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6#1=0} Honda state: {ULTIMATE.start_main_#t~post6#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 20:00:12,982 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2022-12-13 20:00:12,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:00:12,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:00:12,983 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:00:12,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-12-13 20:00:12,989 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2022-12-13 20:00:12,990 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 20:00:12,990 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 20:00:12,990 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2022-12-13 20:00:13,004 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2022-12-13 20:00:13,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:00:13,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:00:13,006 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:00:13,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-12-13 20:00:13,008 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 20:00:13,008 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 20:00:13,187 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 20:00:13,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-12-13 20:00:13,191 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 20:00:13,191 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 20:00:13,191 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 20:00:13,191 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 20:00:13,191 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 20:00:13,191 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:00:13,191 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 20:00:13,191 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 20:00:13,191 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested6.i_Iteration5_Loop [2022-12-13 20:00:13,191 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 20:00:13,191 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 20:00:13,192 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:00:13,196 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:00:13,197 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:00:13,222 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 20:00:13,222 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 20:00:13,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:00:13,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:00:13,223 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:00:13,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-12-13 20:00:13,225 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 [2022-12-13 20:00:13,235 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 20:00:13,235 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 20:00:13,235 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 20:00:13,235 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 20:00:13,235 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 20:00:13,236 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 20:00:13,237 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 20:00:13,239 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 20:00:13,241 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2022-12-13 20:00:13,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:00:13,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:00:13,242 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:00:13,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-12-13 20:00:13,244 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 [2022-12-13 20:00:13,254 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 20:00:13,254 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 20:00:13,255 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 20:00:13,255 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 20:00:13,255 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 20:00:13,255 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 20:00:13,255 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 20:00:13,257 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 20:00:13,259 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2022-12-13 20:00:13,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:00:13,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:00:13,260 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:00:13,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-12-13 20:00:13,263 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 [2022-12-13 20:00:13,273 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 20:00:13,273 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 20:00:13,273 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 20:00:13,273 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 20:00:13,273 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 20:00:13,274 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 20:00:13,274 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 20:00:13,277 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 20:00:13,281 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2022-12-13 20:00:13,282 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-12-13 20:00:13,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:00:13,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:00:13,282 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:00:13,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-12-13 20:00:13,284 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 20:00:13,285 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 20:00:13,285 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 20:00:13,285 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0#1, ULTIMATE.start_main_~k~0#1) = 1*ULTIMATE.start_main_~n~0#1 - 1*ULTIMATE.start_main_~k~0#1 Supporting invariants [] [2022-12-13 20:00:13,287 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2022-12-13 20:00:13,288 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 20:00:13,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:00:13,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:00:13,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 20:00:13,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:00:13,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:00:13,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 20:00:13,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:00:13,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:00:13,338 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-12-13 20:00:13,338 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 51 states and 62 transitions. cyclomatic complexity: 15 Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-12-13 20:00:13,366 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 51 states and 62 transitions. cyclomatic complexity: 15. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 157 states and 192 transitions. Complement of second has 7 states. [2022-12-13 20:00:13,366 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 [2022-12-13 20:00:13,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-12-13 20:00:13,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 31 transitions. [2022-12-13 20:00:13,367 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 31 transitions. Stem has 8 letters. Loop has 4 letters. [2022-12-13 20:00:13,368 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 20:00:13,368 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 31 transitions. Stem has 12 letters. Loop has 4 letters. [2022-12-13 20:00:13,368 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 20:00:13,368 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 31 transitions. Stem has 8 letters. Loop has 8 letters. [2022-12-13 20:00:13,368 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 20:00:13,368 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 157 states and 192 transitions. [2022-12-13 20:00:13,370 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 30 [2022-12-13 20:00:13,370 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 157 states to 114 states and 138 transitions. [2022-12-13 20:00:13,370 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 40 [2022-12-13 20:00:13,371 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2022-12-13 20:00:13,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 114 states and 138 transitions. [2022-12-13 20:00:13,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 20:00:13,371 INFO L218 hiAutomatonCegarLoop]: Abstraction has 114 states and 138 transitions. [2022-12-13 20:00:13,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states and 138 transitions. [2022-12-13 20:00:13,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 79. [2022-12-13 20:00:13,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 79 states have (on average 1.2025316455696202) internal successors, (95), 78 states have internal predecessors, (95), 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) [2022-12-13 20:00:13,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 95 transitions. [2022-12-13 20:00:13,375 INFO L240 hiAutomatonCegarLoop]: Abstraction has 79 states and 95 transitions. [2022-12-13 20:00:13,375 INFO L428 stractBuchiCegarLoop]: Abstraction has 79 states and 95 transitions. [2022-12-13 20:00:13,375 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-12-13 20:00:13,375 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 79 states and 95 transitions. [2022-12-13 20:00:13,376 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 23 [2022-12-13 20:00:13,376 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 20:00:13,376 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 20:00:13,377 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:00:13,377 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:00:13,377 INFO L748 eck$LassoCheckResult]: Stem: 789#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 766#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet5#1, main_#t~post6#1, main_#t~post4#1, main_#t~post3#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;main_~k~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~n~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 767#L28 assume !!(main_~n~0#1 < 1000000); 761#L29 assume main_~k~0#1 == main_~n~0#1; 762#L29-1 main_~i~0#1 := 0; 763#L33-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 790#L34-3 assume !!(main_~j~0#1 < main_~n~0#1); 807#L35 assume !(0 != main_#t~nondet5#1);havoc main_#t~nondet5#1;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 >= main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 813#L18-3 assume !(0 == __VERIFIER_assert_~cond#1); 812#L18-5 assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 <= main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 811#L18-6 assume !(0 == __VERIFIER_assert_~cond#1); 810#L18-8 assume { :end_inline___VERIFIER_assert } true; 809#L34-2 main_#t~post4#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 803#L34-3 assume !(main_~j~0#1 < main_~n~0#1); 805#L33-2 main_#t~post3#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 802#L33-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 800#L34-3 [2022-12-13 20:00:13,377 INFO L750 eck$LassoCheckResult]: Loop: 800#L34-3 assume !!(main_~j~0#1 < main_~n~0#1); 794#L35 assume !(0 != main_#t~nondet5#1);havoc main_#t~nondet5#1;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 >= main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 795#L18-3 assume !(0 == __VERIFIER_assert_~cond#1); 808#L18-5 assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 <= main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 806#L18-6 assume !(0 == __VERIFIER_assert_~cond#1); 804#L18-8 assume { :end_inline___VERIFIER_assert } true; 801#L34-2 main_#t~post4#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 800#L34-3 [2022-12-13 20:00:13,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:00:13,377 INFO L85 PathProgramCache]: Analyzing trace with hash -473310882, now seen corresponding path program 1 times [2022-12-13 20:00:13,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:00:13,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102985758] [2022-12-13 20:00:13,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:00:13,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:00:13,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:00:13,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:00:13,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:00:13,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102985758] [2022-12-13 20:00:13,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102985758] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:00:13,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448605437] [2022-12-13 20:00:13,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:00:13,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:00:13,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:00:13,447 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:00:13,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-13 20:00:13,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:00:13,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 20:00:13,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:00:13,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:00:13,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:00:13,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:00:13,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448605437] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:00:13,591 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:00:13,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2022-12-13 20:00:13,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418436351] [2022-12-13 20:00:13,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:00:13,592 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-12-13 20:00:13,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:00:13,592 INFO L85 PathProgramCache]: Analyzing trace with hash 25769677, now seen corresponding path program 2 times [2022-12-13 20:00:13,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:00:13,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229839590] [2022-12-13 20:00:13,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:00:13,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:00:13,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:00:13,599 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 20:00:13,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:00:13,604 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 20:00:13,653 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 20:00:13,653 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 20:00:13,653 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 20:00:13,653 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 20:00:13,653 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 20:00:13,653 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:00:13,653 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 20:00:13,653 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 20:00:13,653 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested6.i_Iteration6_Loop [2022-12-13 20:00:13,654 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 20:00:13,654 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 20:00:13,654 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:00:13,659 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:00:13,661 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:00:13,667 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:00:13,698 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 20:00:13,698 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 20:00:13,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:00:13,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:00:13,699 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:00:13,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-12-13 20:00:13,702 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 20:00:13,702 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 20:00:13,720 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 20:00:13,720 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start___VERIFIER_assert_~cond#1=1, ULTIMATE.start___VERIFIER_assert_#in~cond#1=1} Honda state: {ULTIMATE.start___VERIFIER_assert_~cond#1=1, ULTIMATE.start___VERIFIER_assert_#in~cond#1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 20:00:13,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2022-12-13 20:00:13,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:00:13,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:00:13,724 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:00:13,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-12-13 20:00:13,727 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 20:00:13,727 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 20:00:13,738 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 20:00:13,739 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet5#1=0} Honda state: {ULTIMATE.start_main_#t~nondet5#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 20:00:13,741 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2022-12-13 20:00:13,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:00:13,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:00:13,742 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:00:13,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-12-13 20:00:13,745 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 20:00:13,745 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 20:00:13,759 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2022-12-13 20:00:13,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:00:13,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:00:13,760 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:00:13,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-12-13 20:00:13,763 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 20:00:13,763 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 20:00:14,040 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 20:00:14,043 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2022-12-13 20:00:14,043 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 20:00:14,043 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 20:00:14,043 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 20:00:14,043 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 20:00:14,043 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 20:00:14,044 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:00:14,044 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 20:00:14,044 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 20:00:14,044 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested6.i_Iteration6_Loop [2022-12-13 20:00:14,044 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 20:00:14,044 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 20:00:14,045 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:00:14,050 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:00:14,052 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:00:14,053 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:00:14,080 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 20:00:14,080 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 20:00:14,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:00:14,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:00:14,081 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:00:14,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-12-13 20:00:14,084 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 [2022-12-13 20:00:14,094 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 20:00:14,095 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 20:00:14,095 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 20:00:14,095 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 20:00:14,095 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 20:00:14,096 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 20:00:14,096 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 20:00:14,099 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 20:00:14,103 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-12-13 20:00:14,103 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-12-13 20:00:14,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:00:14,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:00:14,105 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:00:14,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-12-13 20:00:14,107 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 20:00:14,107 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 20:00:14,107 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 20:00:14,107 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0#1, ULTIMATE.start_main_~j~0#1) = 1*ULTIMATE.start_main_~n~0#1 - 1*ULTIMATE.start_main_~j~0#1 Supporting invariants [] [2022-12-13 20:00:14,109 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2022-12-13 20:00:14,110 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 20:00:14,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:00:14,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:00:14,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 20:00:14,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:00:14,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:00:14,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 20:00:14,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:00:14,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:00:14,174 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-12-13 20:00:14,175 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 79 states and 95 transitions. cyclomatic complexity: 24 Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2022-12-13 20:00:14,195 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 79 states and 95 transitions. cyclomatic complexity: 24. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 145 states and 177 transitions. Complement of second has 7 states. [2022-12-13 20:00:14,196 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 [2022-12-13 20:00:14,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2022-12-13 20:00:14,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2022-12-13 20:00:14,197 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 16 letters. Loop has 7 letters. [2022-12-13 20:00:14,197 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 20:00:14,197 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-12-13 20:00:14,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:00:14,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:00:14,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 20:00:14,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:00:14,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:00:14,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 20:00:14,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:00:14,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:00:14,258 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2022-12-13 20:00:14,259 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 79 states and 95 transitions. cyclomatic complexity: 24 Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2022-12-13 20:00:14,275 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 79 states and 95 transitions. cyclomatic complexity: 24. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 145 states and 177 transitions. Complement of second has 7 states. [2022-12-13 20:00:14,276 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 [2022-12-13 20:00:14,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2022-12-13 20:00:14,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2022-12-13 20:00:14,277 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 16 letters. Loop has 7 letters. [2022-12-13 20:00:14,277 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 20:00:14,277 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-12-13 20:00:14,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:00:14,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:00:14,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 20:00:14,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:00:14,303 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2022-12-13 20:00:14,304 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2022-12-13 20:00:14,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:00:14,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 20:00:14,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:00:14,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:00:14,345 INFO L141 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 [2022-12-13 20:00:14,346 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 79 states and 95 transitions. cyclomatic complexity: 24 Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2022-12-13 20:00:14,367 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 79 states and 95 transitions. cyclomatic complexity: 24. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 146 states and 177 transitions. Complement of second has 6 states. [2022-12-13 20:00:14,367 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 [2022-12-13 20:00:14,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2022-12-13 20:00:14,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 37 transitions. [2022-12-13 20:00:14,368 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 37 transitions. Stem has 16 letters. Loop has 7 letters. [2022-12-13 20:00:14,368 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 20:00:14,368 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 37 transitions. Stem has 23 letters. Loop has 7 letters. [2022-12-13 20:00:14,369 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 20:00:14,369 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 37 transitions. Stem has 16 letters. Loop has 14 letters. [2022-12-13 20:00:14,369 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 20:00:14,369 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 146 states and 177 transitions. [2022-12-13 20:00:14,370 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2022-12-13 20:00:14,370 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 146 states to 87 states and 105 transitions. [2022-12-13 20:00:14,370 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2022-12-13 20:00:14,370 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2022-12-13 20:00:14,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 87 states and 105 transitions. [2022-12-13 20:00:14,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 20:00:14,371 INFO L218 hiAutomatonCegarLoop]: Abstraction has 87 states and 105 transitions. [2022-12-13 20:00:14,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states and 105 transitions. [2022-12-13 20:00:14,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 56. [2022-12-13 20:00:14,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 56 states have (on average 1.2321428571428572) internal successors, (69), 55 states have internal predecessors, (69), 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) [2022-12-13 20:00:14,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2022-12-13 20:00:14,373 INFO L240 hiAutomatonCegarLoop]: Abstraction has 56 states and 69 transitions. [2022-12-13 20:00:14,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:00:14,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 20:00:14,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2022-12-13 20:00:14,374 INFO L87 Difference]: Start difference. First operand 56 states and 69 transitions. Second operand has 15 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 15 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) [2022-12-13 20:00:14,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:00:14,431 INFO L93 Difference]: Finished difference Result 173 states and 206 transitions. [2022-12-13 20:00:14,431 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 173 states and 206 transitions. [2022-12-13 20:00:14,433 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 12 [2022-12-13 20:00:14,434 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 173 states to 169 states and 202 transitions. [2022-12-13 20:00:14,434 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2022-12-13 20:00:14,434 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2022-12-13 20:00:14,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 169 states and 202 transitions. [2022-12-13 20:00:14,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 20:00:14,434 INFO L218 hiAutomatonCegarLoop]: Abstraction has 169 states and 202 transitions. [2022-12-13 20:00:14,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states and 202 transitions. [2022-12-13 20:00:14,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 70. [2022-12-13 20:00:14,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 70 states have (on average 1.2142857142857142) internal successors, (85), 69 states have internal predecessors, (85), 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) [2022-12-13 20:00:14,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 85 transitions. [2022-12-13 20:00:14,439 INFO L240 hiAutomatonCegarLoop]: Abstraction has 70 states and 85 transitions. [2022-12-13 20:00:14,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 20:00:14,440 INFO L428 stractBuchiCegarLoop]: Abstraction has 70 states and 85 transitions. [2022-12-13 20:00:14,440 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2022-12-13 20:00:14,441 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 70 states and 85 transitions. [2022-12-13 20:00:14,441 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-12-13 20:00:14,441 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 20:00:14,441 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 20:00:14,442 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:00:14,442 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-12-13 20:00:14,442 INFO L748 eck$LassoCheckResult]: Stem: 1875#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 1862#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet5#1, main_#t~post6#1, main_#t~post4#1, main_#t~post3#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;main_~k~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~n~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 1863#L28 assume !!(main_~n~0#1 < 1000000); 1853#L29 assume main_~k~0#1 == main_~n~0#1; 1854#L29-1 main_~i~0#1 := 0; 1855#L33-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 1877#L34-3 assume !!(main_~j~0#1 < main_~n~0#1); 1881#L35 assume 0 != main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~k~0#1 := main_~j~0#1; 1860#L36-3 assume !!(main_~k~0#1 < main_~n~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 >= 2 * main_~i~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 1861#L18 assume !(0 == __VERIFIER_assert_~cond#1); 1872#L18-2 assume { :end_inline___VERIFIER_assert } true; 1869#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 1870#L36-3 assume !(main_~k~0#1 < main_~n~0#1); 1865#L34-2 main_#t~post4#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 1882#L34-3 assume !!(main_~j~0#1 < main_~n~0#1); 1880#L35 assume 0 != main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~k~0#1 := main_~j~0#1; 1858#L36-3 [2022-12-13 20:00:14,442 INFO L750 eck$LassoCheckResult]: Loop: 1858#L36-3 assume !!(main_~k~0#1 < main_~n~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 >= 2 * main_~i~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 1859#L18 assume !(0 == __VERIFIER_assert_~cond#1); 1871#L18-2 assume { :end_inline___VERIFIER_assert } true; 1868#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 1858#L36-3 [2022-12-13 20:00:14,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:00:14,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1604037446, now seen corresponding path program 1 times [2022-12-13 20:00:14,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:00:14,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561632201] [2022-12-13 20:00:14,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:00:14,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:00:14,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:00:14,496 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:00:14,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:00:14,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561632201] [2022-12-13 20:00:14,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561632201] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:00:14,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003840360] [2022-12-13 20:00:14,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:00:14,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:00:14,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:00:14,497 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:00:14,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-12-13 20:00:14,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:00:14,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 20:00:14,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:00:14,540 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:00:14,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:00:14,562 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:00:14,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003840360] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:00:14,562 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:00:14,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2022-12-13 20:00:14,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500334158] [2022-12-13 20:00:14,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:00:14,563 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-12-13 20:00:14,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:00:14,563 INFO L85 PathProgramCache]: Analyzing trace with hash 2192714, now seen corresponding path program 2 times [2022-12-13 20:00:14,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:00:14,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023350339] [2022-12-13 20:00:14,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:00:14,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:00:14,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:00:14,567 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 20:00:14,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:00:14,570 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 20:00:14,605 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 20:00:14,605 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 20:00:14,605 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 20:00:14,605 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 20:00:14,605 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 20:00:14,605 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:00:14,605 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 20:00:14,605 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 20:00:14,606 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested6.i_Iteration7_Loop [2022-12-13 20:00:14,606 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 20:00:14,606 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 20:00:14,606 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:00:14,608 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:00:14,611 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:00:14,640 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 20:00:14,640 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 20:00:14,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:00:14,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:00:14,642 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:00:14,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-12-13 20:00:14,644 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 20:00:14,644 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 20:00:14,655 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 20:00:14,655 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6#1=0} Honda state: {ULTIMATE.start_main_#t~post6#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 20:00:14,658 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2022-12-13 20:00:14,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:00:14,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:00:14,659 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:00:14,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-12-13 20:00:14,661 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 20:00:14,661 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 20:00:14,679 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 20:00:14,679 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start___VERIFIER_assert_~cond#1=1, ULTIMATE.start___VERIFIER_assert_#in~cond#1=1} Honda state: {ULTIMATE.start___VERIFIER_assert_~cond#1=1, ULTIMATE.start___VERIFIER_assert_#in~cond#1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 20:00:14,682 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2022-12-13 20:00:14,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:00:14,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:00:14,683 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:00:14,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-12-13 20:00:14,685 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 20:00:14,685 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 20:00:14,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2022-12-13 20:00:14,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:00:14,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:00:14,700 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:00:14,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-12-13 20:00:14,702 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 20:00:14,702 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 20:00:14,881 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 20:00:14,884 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2022-12-13 20:00:14,884 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 20:00:14,884 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 20:00:14,884 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 20:00:14,884 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 20:00:14,884 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 20:00:14,884 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:00:14,885 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 20:00:14,885 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 20:00:14,885 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested6.i_Iteration7_Loop [2022-12-13 20:00:14,885 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 20:00:14,885 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 20:00:14,885 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:00:14,887 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:00:14,892 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 20:00:14,917 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 20:00:14,917 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 20:00:14,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:00:14,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:00:14,918 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:00:14,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2022-12-13 20:00:14,920 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 [2022-12-13 20:00:14,930 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 20:00:14,930 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 20:00:14,930 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 20:00:14,930 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 20:00:14,930 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 20:00:14,931 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 20:00:14,931 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 20:00:14,932 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 20:00:14,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2022-12-13 20:00:14,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:00:14,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:00:14,935 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:00:14,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2022-12-13 20:00:14,938 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 [2022-12-13 20:00:14,948 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 20:00:14,948 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 20:00:14,948 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 20:00:14,948 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 20:00:14,948 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 20:00:14,949 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 20:00:14,949 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 20:00:14,951 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 20:00:14,953 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-12-13 20:00:14,953 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-12-13 20:00:14,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 20:00:14,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:00:14,954 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 20:00:14,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2022-12-13 20:00:14,956 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 20:00:14,956 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 20:00:14,956 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 20:00:14,956 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~k~0#1, ULTIMATE.start_main_~n~0#1) = -1*ULTIMATE.start_main_~k~0#1 + 1*ULTIMATE.start_main_~n~0#1 Supporting invariants [] [2022-12-13 20:00:14,959 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2022-12-13 20:00:14,960 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 20:00:14,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:00:14,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:00:14,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 20:00:14,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:00:14,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:00:14,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 20:00:14,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:00:15,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:00:15,004 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-12-13 20:00:15,004 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 70 states and 85 transitions. cyclomatic complexity: 21 Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2022-12-13 20:00:15,024 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 70 states and 85 transitions. cyclomatic complexity: 21. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 135 states and 167 transitions. Complement of second has 7 states. [2022-12-13 20:00:15,024 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 [2022-12-13 20:00:15,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2022-12-13 20:00:15,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 31 transitions. [2022-12-13 20:00:15,025 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 31 transitions. Stem has 16 letters. Loop has 4 letters. [2022-12-13 20:00:15,025 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 20:00:15,025 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-12-13 20:00:15,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:00:15,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:00:15,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 20:00:15,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:00:15,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:00:15,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 20:00:15,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:00:15,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:00:15,076 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2022-12-13 20:00:15,076 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 70 states and 85 transitions. cyclomatic complexity: 21 Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2022-12-13 20:00:15,093 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 70 states and 85 transitions. cyclomatic complexity: 21. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 135 states and 167 transitions. Complement of second has 7 states. [2022-12-13 20:00:15,093 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 [2022-12-13 20:00:15,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2022-12-13 20:00:15,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 31 transitions. [2022-12-13 20:00:15,094 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 31 transitions. Stem has 16 letters. Loop has 4 letters. [2022-12-13 20:00:15,094 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 20:00:15,094 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-12-13 20:00:15,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:00:15,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:00:15,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 20:00:15,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:00:15,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:00:15,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 20:00:15,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:00:15,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:00:15,135 INFO L141 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 [2022-12-13 20:00:15,135 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 70 states and 85 transitions. cyclomatic complexity: 21 Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2022-12-13 20:00:15,150 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 70 states and 85 transitions. cyclomatic complexity: 21. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 111 states and 136 transitions. Complement of second has 6 states. [2022-12-13 20:00:15,150 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 [2022-12-13 20:00:15,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2022-12-13 20:00:15,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 37 transitions. [2022-12-13 20:00:15,151 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 37 transitions. Stem has 16 letters. Loop has 4 letters. [2022-12-13 20:00:15,151 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 20:00:15,152 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 37 transitions. Stem has 20 letters. Loop has 4 letters. [2022-12-13 20:00:15,152 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 20:00:15,152 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 37 transitions. Stem has 16 letters. Loop has 8 letters. [2022-12-13 20:00:15,152 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 20:00:15,152 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 111 states and 136 transitions. [2022-12-13 20:00:15,153 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-12-13 20:00:15,154 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 111 states to 0 states and 0 transitions. [2022-12-13 20:00:15,154 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-12-13 20:00:15,154 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-12-13 20:00:15,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-12-13 20:00:15,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:00:15,154 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 20:00:15,154 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 20:00:15,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:00:15,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 20:00:15,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 20:00:15,155 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 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) [2022-12-13 20:00:15,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:00:15,155 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-12-13 20:00:15,155 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2022-12-13 20:00:15,155 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-12-13 20:00:15,155 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2022-12-13 20:00:15,155 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-12-13 20:00:15,155 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-12-13 20:00:15,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-12-13 20:00:15,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:00:15,156 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 20:00:15,156 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 20:00:15,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 20:00:15,156 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 20:00:15,156 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2022-12-13 20:00:15,156 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-12-13 20:00:15,156 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-12-13 20:00:15,156 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-12-13 20:00:15,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.12 08:00:15 BoogieIcfgContainer [2022-12-13 20:00:15,161 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-12-13 20:00:15,162 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 20:00:15,162 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 20:00:15,162 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 20:00:15,162 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:00:11" (3/4) ... [2022-12-13 20:00:15,164 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 20:00:15,164 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 20:00:15,164 INFO L158 Benchmark]: Toolchain (without parser) took 4458.84ms. Allocated memory was 144.7MB in the beginning and 174.1MB in the end (delta: 29.4MB). Free memory was 110.1MB in the beginning and 66.7MB in the end (delta: 43.4MB). Peak memory consumption was 74.9MB. Max. memory is 16.1GB. [2022-12-13 20:00:15,165 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 144.7MB. Free memory is still 114.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 20:00:15,165 INFO L158 Benchmark]: CACSL2BoogieTranslator took 187.51ms. Allocated memory is still 144.7MB. Free memory was 109.6MB in the beginning and 99.8MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 20:00:15,165 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.53ms. Allocated memory is still 144.7MB. Free memory was 99.3MB in the beginning and 98.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 20:00:15,165 INFO L158 Benchmark]: Boogie Preprocessor took 13.92ms. Allocated memory is still 144.7MB. Free memory was 98.1MB in the beginning and 96.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 20:00:15,165 INFO L158 Benchmark]: RCFGBuilder took 217.76ms. Allocated memory is still 144.7MB. Free memory was 96.7MB in the beginning and 86.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 20:00:15,166 INFO L158 Benchmark]: BuchiAutomizer took 4009.71ms. Allocated memory was 144.7MB in the beginning and 174.1MB in the end (delta: 29.4MB). Free memory was 86.3MB in the beginning and 67.7MB in the end (delta: 18.5MB). Peak memory consumption was 49.7MB. Max. memory is 16.1GB. [2022-12-13 20:00:15,166 INFO L158 Benchmark]: Witness Printer took 2.33ms. Allocated memory is still 174.1MB. Free memory was 67.7MB in the beginning and 66.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 20:00:15,167 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 144.7MB. Free memory is still 114.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 187.51ms. Allocated memory is still 144.7MB. Free memory was 109.6MB in the beginning and 99.8MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.53ms. Allocated memory is still 144.7MB. Free memory was 99.3MB in the beginning and 98.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 13.92ms. Allocated memory is still 144.7MB. Free memory was 98.1MB in the beginning and 96.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 217.76ms. Allocated memory is still 144.7MB. Free memory was 96.7MB in the beginning and 86.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 4009.71ms. Allocated memory was 144.7MB in the beginning and 174.1MB in the end (delta: 29.4MB). Free memory was 86.3MB in the beginning and 67.7MB in the end (delta: 18.5MB). Peak memory consumption was 49.7MB. Max. memory is 16.1GB. * Witness Printer took 2.33ms. Allocated memory is still 174.1MB. Free memory was 67.7MB in the beginning and 66.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 10 terminating modules (5 trivial, 3 deterministic, 2 nondeterministic). One deterministic module has affine ranking function -1 * i + n and consists of 3 locations. One deterministic module has affine ranking function -1 * j + n and consists of 4 locations. One deterministic module has affine ranking function n + -1 * k and consists of 4 locations. One nondeterministic module has affine ranking function -1 * j + n and consists of 4 locations. One nondeterministic module has affine ranking function n + -1 * k and consists of 4 locations. 5 modules have a trivial ranking function, the largest among these consists of 15 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.9s and 8 iterations. TraceHistogramMax:2. Analysis of lassos took 2.9s. Construction of modules took 0.1s. Büchi inclusion checks took 0.7s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 7. Automata minimization 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 205 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [3, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 407 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 398 mSDsluCounter, 423 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 172 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 278 IncrementalHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 251 mSDtfsCounter, 278 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI2 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital22 mio100 ax100 hnf100 lsp74 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq143 hnf94 smp100 dnf100 smp100 tf109 neg99 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 74ms VariablesStem: 0 VariablesLoop: 4 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.3s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-12-13 20:00:15,174 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2022-12-13 20:00:15,385 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-12-13 20:00:15,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-12-13 20:00:15,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b91621e-bf18-4e52-ae8f-5756fc7eda39/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE