./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/4NestedWith3Variables-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05191ec1-702f-48c0-abdb-c80e443b56ea/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05191ec1-702f-48c0-abdb-c80e443b56ea/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05191ec1-702f-48c0-abdb-c80e443b56ea/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05191ec1-702f-48c0-abdb-c80e443b56ea/bin/uautomizer-DrprNOufMa/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/4NestedWith3Variables-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05191ec1-702f-48c0-abdb-c80e443b56ea/bin/uautomizer-DrprNOufMa/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05191ec1-702f-48c0-abdb-c80e443b56ea/bin/uautomizer-DrprNOufMa --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 64bit --witnessprinter.graph.data.programhash b39ec4b52f8da315ff57d8e97152c727a55203720ed4bc216d0daa6b94e35d48 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 22:44:53,853 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 22:44:53,855 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 22:44:53,878 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 22:44:53,878 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 22:44:53,879 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 22:44:53,881 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 22:44:53,882 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 22:44:53,884 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 22:44:53,885 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 22:44:53,886 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 22:44:53,887 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 22:44:53,887 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 22:44:53,888 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 22:44:53,889 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 22:44:53,891 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 22:44:53,892 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 22:44:53,893 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 22:44:53,894 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 22:44:53,896 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 22:44:53,898 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 22:44:53,899 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 22:44:53,900 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 22:44:53,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 22:44:53,904 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 22:44:53,904 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 22:44:53,905 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 22:44:53,906 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 22:44:53,906 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 22:44:53,907 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 22:44:53,907 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 22:44:53,908 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 22:44:53,909 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 22:44:53,909 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 22:44:53,910 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 22:44:53,910 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 22:44:53,911 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 22:44:53,911 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 22:44:53,911 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 22:44:53,912 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 22:44:53,913 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 22:44:53,914 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05191ec1-702f-48c0-abdb-c80e443b56ea/bin/uautomizer-DrprNOufMa/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-06 22:44:53,941 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 22:44:53,942 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 22:44:53,942 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 22:44:53,942 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 22:44:53,943 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 22:44:53,943 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 22:44:53,943 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 22:44:53,943 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-06 22:44:53,943 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-06 22:44:53,943 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-06 22:44:53,943 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-06 22:44:53,943 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-06 22:44:53,944 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-06 22:44:53,944 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 22:44:53,944 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 22:44:53,944 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 22:44:53,944 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 22:44:53,944 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-06 22:44:53,944 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-06 22:44:53,944 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-06 22:44:53,944 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 22:44:53,945 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-06 22:44:53,950 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 22:44:53,950 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-06 22:44:53,950 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 22:44:53,950 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 22:44:53,950 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 22:44:53,950 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 22:44:53,950 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 22:44:53,951 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-06 22:44:53,951 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_05191ec1-702f-48c0-abdb-c80e443b56ea/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05191ec1-702f-48c0-abdb-c80e443b56ea/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b39ec4b52f8da315ff57d8e97152c727a55203720ed4bc216d0daa6b94e35d48 [2021-12-06 22:44:54,128 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 22:44:54,148 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 22:44:54,149 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 22:44:54,150 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 22:44:54,151 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 22:44:54,151 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05191ec1-702f-48c0-abdb-c80e443b56ea/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/termination-crafted/4NestedWith3Variables-1.c [2021-12-06 22:44:54,199 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05191ec1-702f-48c0-abdb-c80e443b56ea/bin/uautomizer-DrprNOufMa/data/e72335f9f/ad1e8b9f47704122853cc7ffe7874d1b/FLAG47b097cc6 [2021-12-06 22:44:54,569 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 22:44:54,569 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05191ec1-702f-48c0-abdb-c80e443b56ea/sv-benchmarks/c/termination-crafted/4NestedWith3Variables-1.c [2021-12-06 22:44:54,573 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05191ec1-702f-48c0-abdb-c80e443b56ea/bin/uautomizer-DrprNOufMa/data/e72335f9f/ad1e8b9f47704122853cc7ffe7874d1b/FLAG47b097cc6 [2021-12-06 22:44:54,582 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05191ec1-702f-48c0-abdb-c80e443b56ea/bin/uautomizer-DrprNOufMa/data/e72335f9f/ad1e8b9f47704122853cc7ffe7874d1b [2021-12-06 22:44:54,584 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 22:44:54,585 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 22:44:54,586 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 22:44:54,586 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 22:44:54,588 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 22:44:54,589 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:44:54" (1/1) ... [2021-12-06 22:44:54,589 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cfd9823 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:44:54, skipping insertion in model container [2021-12-06 22:44:54,590 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:44:54" (1/1) ... [2021-12-06 22:44:54,594 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 22:44:54,603 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 22:44:54,732 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:44:54,735 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 22:44:54,746 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:44:54,755 INFO L208 MainTranslator]: Completed translation [2021-12-06 22:44:54,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:44:54 WrapperNode [2021-12-06 22:44:54,756 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 22:44:54,757 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 22:44:54,757 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 22:44:54,757 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 22:44:54,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:44:54" (1/1) ... [2021-12-06 22:44:54,769 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:44:54" (1/1) ... [2021-12-06 22:44:54,786 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 31 [2021-12-06 22:44:54,786 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 22:44:54,787 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 22:44:54,787 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 22:44:54,787 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 22:44:54,795 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:44:54" (1/1) ... [2021-12-06 22:44:54,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:44:54" (1/1) ... [2021-12-06 22:44:54,796 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:44:54" (1/1) ... [2021-12-06 22:44:54,796 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:44:54" (1/1) ... [2021-12-06 22:44:54,798 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:44:54" (1/1) ... [2021-12-06 22:44:54,801 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:44:54" (1/1) ... [2021-12-06 22:44:54,802 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:44:54" (1/1) ... [2021-12-06 22:44:54,803 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 22:44:54,804 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 22:44:54,804 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 22:44:54,804 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 22:44:54,805 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:44:54" (1/1) ... [2021-12-06 22:44:54,811 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:44:54,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05191ec1-702f-48c0-abdb-c80e443b56ea/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:44:54,830 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05191ec1-702f-48c0-abdb-c80e443b56ea/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:44:54,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05191ec1-702f-48c0-abdb-c80e443b56ea/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-06 22:44:54,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 22:44:54,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 22:44:54,909 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 22:44:54,910 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 22:44:54,960 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 22:44:54,965 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 22:44:54,966 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 22:44:54,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:44:54 BoogieIcfgContainer [2021-12-06 22:44:54,967 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 22:44:54,968 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-06 22:44:54,968 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-06 22:44:54,970 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-06 22:44:54,971 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-06 22:44:54,971 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.12 10:44:54" (1/3) ... [2021-12-06 22:44:54,972 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@18522f89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.12 10:44:54, skipping insertion in model container [2021-12-06 22:44:54,972 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-06 22:44:54,972 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:44:54" (2/3) ... [2021-12-06 22:44:54,972 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@18522f89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.12 10:44:54, skipping insertion in model container [2021-12-06 22:44:54,972 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-06 22:44:54,972 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:44:54" (3/3) ... [2021-12-06 22:44:54,973 INFO L388 chiAutomizerObserver]: Analyzing ICFG 4NestedWith3Variables-1.c [2021-12-06 22:44:55,006 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-06 22:44:55,006 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-06 22:44:55,006 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-06 22:44:55,006 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-06 22:44:55,006 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-06 22:44:55,006 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-06 22:44:55,006 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-06 22:44:55,006 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-06 22:44:55,016 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:44:55,028 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-06 22:44:55,029 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 22:44:55,029 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 22:44:55,033 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-12-06 22:44:55,033 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-12-06 22:44:55,033 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-06 22:44:55,033 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:44:55,034 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-06 22:44:55,034 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 22:44:55,034 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 22:44:55,035 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-12-06 22:44:55,035 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-12-06 22:44:55,039 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~a~0#1, main_~b~0#1, main_~q~0#1, main_~olda~0#1;havoc main_~a~0#1;havoc main_~b~0#1;havoc main_~q~0#1;havoc main_~olda~0#1;main_~q~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~a~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~b~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 7#L23true assume !!(-524287 <= main_~q~0#1 && main_~q~0#1 <= 524287); 10#L24true assume !!(-524287 <= main_~a~0#1 && main_~a~0#1 <= 524287); 6#L25true assume !!(-524287 <= main_~b~0#1 && main_~b~0#1 <= 524287); 5#L26-2true [2021-12-06 22:44:55,040 INFO L793 eck$LassoCheckResult]: Loop: 5#L26-2true assume !!(main_~q~0#1 > 0);main_~q~0#1 := main_~q~0#1 + main_~a~0#1 - 1;main_~olda~0#1 := main_~a~0#1;main_~a~0#1 := 3 * main_~olda~0#1 - 4 * main_~b~0#1;main_~b~0#1 := 4 * main_~olda~0#1 + 3 * main_~b~0#1; 5#L26-2true [2021-12-06 22:44:55,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:44:55,044 INFO L85 PathProgramCache]: Analyzing trace with hash 28695849, now seen corresponding path program 1 times [2021-12-06 22:44:55,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:44:55,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582798474] [2021-12-06 22:44:55,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:44:55,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:44:55,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:44:55,109 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 22:44:55,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:44:55,124 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 22:44:55,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:44:55,126 INFO L85 PathProgramCache]: Analyzing trace with hash 57, now seen corresponding path program 1 times [2021-12-06 22:44:55,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:44:55,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911838803] [2021-12-06 22:44:55,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:44:55,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:44:55,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:44:55,135 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 22:44:55,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:44:55,141 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 22:44:55,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:44:55,143 INFO L85 PathProgramCache]: Analyzing trace with hash 889571345, now seen corresponding path program 1 times [2021-12-06 22:44:55,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:44:55,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828133993] [2021-12-06 22:44:55,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:44:55,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:44:55,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:44:55,151 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 22:44:55,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:44:55,158 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 22:44:55,225 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 22:44:55,226 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 22:44:55,226 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 22:44:55,226 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 22:44:55,226 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-06 22:44:55,226 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:44:55,227 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 22:44:55,227 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 22:44:55,227 INFO L133 ssoRankerPreferences]: Filename of dumped script: 4NestedWith3Variables-1.c_Iteration1_Loop [2021-12-06 22:44:55,227 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 22:44:55,227 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 22:44:55,241 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:44:55,247 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:44:55,250 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:44:55,341 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 22:44:55,342 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-06 22:44:55,344 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:44:55,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05191ec1-702f-48c0-abdb-c80e443b56ea/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:44:55,345 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05191ec1-702f-48c0-abdb-c80e443b56ea/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:44:55,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05191ec1-702f-48c0-abdb-c80e443b56ea/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-12-06 22:44:55,347 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 22:44:55,347 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:44:55,367 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 22:44:55,367 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-06 22:44:55,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05191ec1-702f-48c0-abdb-c80e443b56ea/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-12-06 22:44:55,388 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:44:55,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05191ec1-702f-48c0-abdb-c80e443b56ea/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:44:55,389 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05191ec1-702f-48c0-abdb-c80e443b56ea/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:44:55,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05191ec1-702f-48c0-abdb-c80e443b56ea/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-12-06 22:44:55,390 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 22:44:55,390 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:44:55,404 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 22:44:55,404 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-06 22:44:55,423 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05191ec1-702f-48c0-abdb-c80e443b56ea/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2021-12-06 22:44:55,423 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:44:55,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05191ec1-702f-48c0-abdb-c80e443b56ea/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:44:55,424 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05191ec1-702f-48c0-abdb-c80e443b56ea/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:44:55,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05191ec1-702f-48c0-abdb-c80e443b56ea/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-12-06 22:44:55,426 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 22:44:55,426 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:44:55,470 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05191ec1-702f-48c0-abdb-c80e443b56ea/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2021-12-06 22:44:55,470 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:44:55,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05191ec1-702f-48c0-abdb-c80e443b56ea/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:44:55,471 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05191ec1-702f-48c0-abdb-c80e443b56ea/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:44:55,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05191ec1-702f-48c0-abdb-c80e443b56ea/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-12-06 22:44:55,472 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-06 22:44:55,472 INFO L160 nArgumentSynthesizer]: Using integer mode.