./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/a.10.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/a.10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN --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 8289502743fb6ee3e9387ca4db850e54d4ebfec650d98779b674c3406acaae1b --- 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-6b4ec56 [2022-11-20 10:46:22,827 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:46:22,830 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:46:22,858 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:46:22,859 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:46:22,860 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:46:22,862 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:46:22,864 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:46:22,866 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:46:22,868 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:46:22,869 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:46:22,871 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:46:22,871 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:46:22,873 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:46:22,874 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:46:22,876 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:46:22,877 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:46:22,878 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:46:22,880 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:46:22,883 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:46:22,885 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:46:22,888 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:46:22,903 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:46:22,904 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:46:22,908 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:46:22,909 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:46:22,909 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:46:22,910 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:46:22,911 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:46:22,912 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:46:22,913 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:46:22,913 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:46:22,914 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:46:22,924 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:46:22,925 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:46:22,926 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:46:22,927 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:46:22,927 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:46:22,927 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:46:22,929 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:46:22,930 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:46:22,931 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-11-20 10:46:22,982 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:46:22,984 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:46:22,985 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:46:22,985 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:46:22,986 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:46:22,987 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:46:22,987 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:46:22,987 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-20 10:46:22,988 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-20 10:46:22,988 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-20 10:46:22,989 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-20 10:46:22,990 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-20 10:46:22,990 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-20 10:46:22,990 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:46:22,991 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 10:46:22,991 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:46:22,991 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:46:22,991 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-20 10:46:22,992 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-20 10:46:22,992 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-20 10:46:22,992 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:46:22,992 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-20 10:46:22,993 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:46:22,993 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-20 10:46:22,993 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:46:22,994 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:46:22,994 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:46:22,995 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:46:22,997 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-20 10:46:22,997 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_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8289502743fb6ee3e9387ca4db850e54d4ebfec650d98779b674c3406acaae1b [2022-11-20 10:46:23,397 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:46:23,448 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:46:23,452 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:46:23,455 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:46:23,455 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:46:23,457 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/termination-restricted-15/a.10.c [2022-11-20 10:46:27,219 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:46:27,535 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:46:27,536 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/sv-benchmarks/c/termination-restricted-15/a.10.c [2022-11-20 10:46:27,543 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/data/ceda1681c/e4124ba84dc1487f9ba05d4c22c9c0f7/FLAG4022d85ac [2022-11-20 10:46:27,565 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/data/ceda1681c/e4124ba84dc1487f9ba05d4c22c9c0f7 [2022-11-20 10:46:27,570 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:46:27,573 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:46:27,579 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:46:27,579 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:46:27,584 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:46:27,585 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:46:27" (1/1) ... [2022-11-20 10:46:27,587 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@761f3a1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:46:27, skipping insertion in model container [2022-11-20 10:46:27,587 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:46:27" (1/1) ... [2022-11-20 10:46:27,597 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:46:27,615 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:46:27,853 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:46:27,860 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:46:27,880 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:46:27,896 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:46:27,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:46:27 WrapperNode [2022-11-20 10:46:27,898 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:46:27,900 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:46:27,901 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:46:27,901 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:46:27,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:46:27" (1/1) ... [2022-11-20 10:46:27,919 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:46:27" (1/1) ... [2022-11-20 10:46:27,940 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2022-11-20 10:46:27,941 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:46:27,945 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:46:27,945 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:46:27,946 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:46:27,957 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:46:27" (1/1) ... [2022-11-20 10:46:27,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:46:27" (1/1) ... [2022-11-20 10:46:27,959 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:46:27" (1/1) ... [2022-11-20 10:46:27,959 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:46:27" (1/1) ... [2022-11-20 10:46:27,962 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:46:27" (1/1) ... [2022-11-20 10:46:27,967 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:46:27" (1/1) ... [2022-11-20 10:46:27,969 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:46:27" (1/1) ... [2022-11-20 10:46:27,970 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:46:27" (1/1) ... [2022-11-20 10:46:27,971 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:46:27,973 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:46:27,974 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:46:27,974 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:46:27,976 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:46:27" (1/1) ... [2022-11-20 10:46:27,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:46:27,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:46:28,016 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:46:28,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-20 10:46:28,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:46:28,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:46:28,181 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:46:28,184 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:46:28,298 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:46:28,307 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:46:28,307 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 10:46:28,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:46:28 BoogieIcfgContainer [2022-11-20 10:46:28,310 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:46:28,313 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-20 10:46:28,313 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-20 10:46:28,318 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-20 10:46:28,319 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-20 10:46:28,320 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 10:46:27" (1/3) ... [2022-11-20 10:46:28,323 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2e4ca062 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 10:46:28, skipping insertion in model container [2022-11-20 10:46:28,323 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-20 10:46:28,323 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:46:27" (2/3) ... [2022-11-20 10:46:28,325 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2e4ca062 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 10:46:28, skipping insertion in model container [2022-11-20 10:46:28,325 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-20 10:46:28,325 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:46:28" (3/3) ... [2022-11-20 10:46:28,327 INFO L332 chiAutomizerObserver]: Analyzing ICFG a.10.c [2022-11-20 10:46:28,423 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-20 10:46:28,423 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-20 10:46:28,423 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-20 10:46:28,424 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-20 10:46:28,424 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-20 10:46:28,424 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-20 10:46:28,424 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-20 10:46:28,425 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-20 10:46:28,431 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:46:28,452 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-20 10:46:28,453 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 10:46:28,453 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 10:46:28,458 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-20 10:46:28,458 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-20 10:46:28,458 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-20 10:46:28,459 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:46:28,460 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-20 10:46:28,460 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 10:46:28,461 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 10:46:28,461 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-20 10:46:28,461 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-20 10:46:28,472 INFO L748 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 6#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_~c~0#1, main_~x~0#1, main_~y~0#1;havoc main_~c~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~c~0#1 := 0; 2#L12-2true [2022-11-20 10:46:28,472 INFO L750 eck$LassoCheckResult]: Loop: 2#L12-2true assume !!!(main_~x~0#1 == main_~y~0#1); 8#L12true assume !(main_~x~0#1 > main_~y~0#1);main_~x~0#1 := 1 + main_~x~0#1; 2#L12-2true [2022-11-20 10:46:28,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:46:28,480 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-11-20 10:46:28,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:46:28,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18814014] [2022-11-20 10:46:28,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:46:28,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:46:28,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:46:28,592 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:46:28,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:46:28,615 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:46:28,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:46:28,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 1 times [2022-11-20 10:46:28,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:46:28,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661944294] [2022-11-20 10:46:28,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:46:28,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:46:28,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:46:28,635 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:46:28,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:46:28,642 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:46:28,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:46:28,645 INFO L85 PathProgramCache]: Analyzing trace with hash 925800, now seen corresponding path program 1 times [2022-11-20 10:46:28,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:46:28,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495084814] [2022-11-20 10:46:28,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:46:28,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:46:28,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:46:28,656 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:46:28,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:46:28,664 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:46:28,747 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 10:46:28,748 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 10:46:28,749 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 10:46:28,749 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 10:46:28,749 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 10:46:28,749 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:46:28,750 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 10:46:28,750 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 10:46:28,750 INFO L133 ssoRankerPreferences]: Filename of dumped script: a.10.c_Iteration1_Loop [2022-11-20 10:46:28,751 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 10:46:28,751 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 10:46:28,777 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:46:28,794 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:46:28,800 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:46:28,919 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 10:46:28,932 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 10:46:28,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:46:28,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:46:28,944 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:46:28,955 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:46:28,955 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:46:28,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-11-20 10:46:28,991 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 10:46:28,991 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: [] [2022-11-20 10:46:29,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-11-20 10:46:29,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:46:29,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:46:29,006 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:46:29,017 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:46:29,018 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:46:29,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-11-20 10:46:29,051 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 10:46:29,052 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: [] [2022-11-20 10:46:29,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-11-20 10:46:29,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:46:29,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:46:29,059 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:46:29,068 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:46:29,068 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:46:29,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-20 10:46:29,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-11-20 10:46:29,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:46:29,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:46:29,127 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:46:29,133 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 10:46:29,134 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:46:29,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-20 10:46:29,343 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 10:46:29,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-11-20 10:46:29,352 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 10:46:29,352 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 10:46:29,352 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 10:46:29,352 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 10:46:29,352 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 10:46:29,353 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:46:29,353 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 10:46:29,353 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 10:46:29,353 INFO L133 ssoRankerPreferences]: Filename of dumped script: a.10.c_Iteration1_Loop [2022-11-20 10:46:29,353 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 10:46:29,353 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 10:46:29,357 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:46:29,378 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:46:29,384 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:46:29,502 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 10:46:29,508 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 10:46:29,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:46:29,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:46:29,511 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:46:29,515 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 [2022-11-20 10:46:29,529 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:46:29,530 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:46:29,530 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:46:29,530 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:46:29,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-11-20 10:46:29,543 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-20 10:46:29,551 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-20 10:46:29,567 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 10:46:29,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-11-20 10:46:29,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:46:29,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:46:29,582 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:46:29,593 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 [2022-11-20 10:46:29,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-11-20 10:46:29,610 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:46:29,611 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:46:29,611 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:46:29,611 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:46:29,621 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-20 10:46:29,621 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-20 10:46:29,651 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 10:46:29,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-11-20 10:46:29,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:46:29,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:46:29,659 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:46:29,668 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 [2022-11-20 10:46:29,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-11-20 10:46:29,690 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:46:29,690 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:46:29,691 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:46:29,691 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:46:29,691 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:46:29,693 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:46:29,693 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:46:29,704 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 10:46:29,715 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2022-11-20 10:46:29,716 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-20 10:46:29,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:46:29,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:46:29,752 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:46:29,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-11-20 10:46:29,756 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 10:46:29,756 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 10:46:29,756 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 10:46:29,757 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1, ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~y~0#1 - 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2022-11-20 10:46:29,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-11-20 10:46:29,768 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 10:46:29,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:46:29,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:29,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:46:29,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:46:29,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:29,865 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:46:29,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:46:29,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:46:29,963 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 [2022-11-20 10:46:29,966 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) 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) [2022-11-20 10:46:30,036 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.3333333333333333) 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) Result 24 states and 31 transitions. Complement of second has 8 states. [2022-11-20 10:46:30,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-20 10:46:30,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) 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) [2022-11-20 10:46:30,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 12 transitions. [2022-11-20 10:46:30,054 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 2 letters. Loop has 2 letters. [2022-11-20 10:46:30,055 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:46:30,055 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 4 letters. Loop has 2 letters. [2022-11-20 10:46:30,056 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:46:30,056 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 2 letters. Loop has 4 letters. [2022-11-20 10:46:30,057 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:46:30,058 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 31 transitions. [2022-11-20 10:46:30,065 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-20 10:46:30,070 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 8 states and 11 transitions. [2022-11-20 10:46:30,071 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2022-11-20 10:46:30,072 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2022-11-20 10:46:30,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2022-11-20 10:46:30,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 10:46:30,074 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2022-11-20 10:46:30,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2022-11-20 10:46:30,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-11-20 10:46:30,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 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) [2022-11-20 10:46:30,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2022-11-20 10:46:30,112 INFO L240 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2022-11-20 10:46:30,112 INFO L428 stractBuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2022-11-20 10:46:30,112 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-20 10:46:30,113 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2022-11-20 10:46:30,114 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-20 10:46:30,115 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 10:46:30,115 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 10:46:30,116 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-11-20 10:46:30,116 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-20 10:46:30,116 INFO L748 eck$LassoCheckResult]: Stem: 76#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 77#L-1 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_~c~0#1, main_~x~0#1, main_~y~0#1;havoc main_~c~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~c~0#1 := 0; 78#L12-2 assume !!!(main_~x~0#1 == main_~y~0#1); 75#L12 assume main_~x~0#1 > main_~y~0#1;main_~y~0#1 := 1 + main_~y~0#1; 71#L12-2 [2022-11-20 10:46:30,117 INFO L750 eck$LassoCheckResult]: Loop: 71#L12-2 assume !!!(main_~x~0#1 == main_~y~0#1); 72#L12 assume !(main_~x~0#1 > main_~y~0#1);main_~x~0#1 := 1 + main_~x~0#1; 71#L12-2 [2022-11-20 10:46:30,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:46:30,118 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2022-11-20 10:46:30,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:46:30,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578311002] [2022-11-20 10:46:30,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:46:30,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:46:30,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:46:30,127 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:46:30,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:46:30,139 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:46:30,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:46:30,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 2 times [2022-11-20 10:46:30,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:46:30,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062094501] [2022-11-20 10:46:30,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:46:30,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:46:30,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:46:30,152 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:46:30,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:46:30,158 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:46:30,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:46:30,159 INFO L85 PathProgramCache]: Analyzing trace with hash 889692235, now seen corresponding path program 1 times [2022-11-20 10:46:30,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:46:30,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308273883] [2022-11-20 10:46:30,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:46:30,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:46:30,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:30,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:46:30,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:46:30,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308273883] [2022-11-20 10:46:30,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308273883] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:46:30,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:46:30,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:46:30,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083649929] [2022-11-20 10:46:30,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:46:30,354 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 10:46:30,354 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 10:46:30,355 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 10:46:30,355 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 10:46:30,355 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 10:46:30,355 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:46:30,355 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 10:46:30,356 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 10:46:30,356 INFO L133 ssoRankerPreferences]: Filename of dumped script: a.10.c_Iteration2_Loop [2022-11-20 10:46:30,356 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 10:46:30,356 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 10:46:30,360 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:46:30,366 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:46:30,413 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:46:30,478 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2022-11-20 10:46:30,558 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 10:46:30,558 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 10:46:30,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:46:30,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:46:30,560 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:46:30,572 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:46:30,572 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:46:30,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-11-20 10:46:30,600 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 10:46:30,600 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 10:46:30,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-11-20 10:46:30,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:46:30,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:46:30,613 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:46:30,627 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:46:30,627 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:46:30,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-11-20 10:46:30,654 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 10:46:30,654 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 10:46:30,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-11-20 10:46:30,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:46:30,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:46:30,667 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:46:30,677 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:46:30,677 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:46:30,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-11-20 10:46:30,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-11-20 10:46:30,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:46:30,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:46:30,709 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:46:30,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-11-20 10:46:30,714 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 10:46:30,714 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:46:30,889 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 10:46:30,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-11-20 10:46:30,897 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 10:46:30,897 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 10:46:30,897 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 10:46:30,897 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 10:46:30,897 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 10:46:30,897 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:46:30,897 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 10:46:30,898 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 10:46:30,898 INFO L133 ssoRankerPreferences]: Filename of dumped script: a.10.c_Iteration2_Loop [2022-11-20 10:46:30,898 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 10:46:30,898 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 10:46:30,900 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:46:30,911 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:46:30,915 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:46:30,984 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 10:46:30,984 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 10:46:30,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:46:30,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:46:30,986 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:46:31,002 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 [2022-11-20 10:46:31,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-11-20 10:46:31,017 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:46:31,018 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:46:31,018 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:46:31,018 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:46:31,024 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-20 10:46:31,024 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-20 10:46:31,044 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 10:46:31,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-11-20 10:46:31,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:46:31,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:46:31,056 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:46:31,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-11-20 10:46:31,068 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 [2022-11-20 10:46:31,083 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:46:31,083 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:46:31,084 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:46:31,084 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:46:31,092 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-20 10:46:31,092 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-20 10:46:31,115 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 10:46:31,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-11-20 10:46:31,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:46:31,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:46:31,125 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:46:31,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-11-20 10:46:31,132 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 [2022-11-20 10:46:31,147 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:46:31,148 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:46:31,148 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:46:31,148 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:46:31,148 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:46:31,150 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:46:31,150 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:46:31,163 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 10:46:31,168 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2022-11-20 10:46:31,168 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-20 10:46:31,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:46:31,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:46:31,170 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:46:31,179 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 10:46:31,180 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 10:46:31,180 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 10:46:31,180 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1, ULTIMATE.start_main_~y~0#1) = -1*ULTIMATE.start_main_~x~0#1 + 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2022-11-20 10:46:31,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-11-20 10:46:31,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-11-20 10:46:31,191 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 10:46:31,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:46:31,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:31,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:46:31,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:46:31,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:31,244 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:46:31,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:46:31,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:46:31,279 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 [2022-11-20 10:46:31,279 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-11-20 10:46:31,294 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 12 states and 17 transitions. Complement of second has 5 states. [2022-11-20 10:46:31,295 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 [2022-11-20 10:46:31,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-11-20 10:46:31,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2022-11-20 10:46:31,297 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2022-11-20 10:46:31,298 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:46:31,298 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2022-11-20 10:46:31,298 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:46:31,299 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 4 letters. [2022-11-20 10:46:31,299 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:46:31,299 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 17 transitions. [2022-11-20 10:46:31,300 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-20 10:46:31,301 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 17 transitions. [2022-11-20 10:46:31,301 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2022-11-20 10:46:31,301 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-11-20 10:46:31,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2022-11-20 10:46:31,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 10:46:31,302 INFO L218 hiAutomatonCegarLoop]: Abstraction has 12 states and 17 transitions. [2022-11-20 10:46:31,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2022-11-20 10:46:31,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-11-20 10:46:31,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:46:31,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2022-11-20 10:46:31,304 INFO L240 hiAutomatonCegarLoop]: Abstraction has 12 states and 17 transitions. [2022-11-20 10:46:31,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:46:31,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:46:31,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:46:31,310 INFO L87 Difference]: Start difference. First operand 12 states and 17 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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) [2022-11-20 10:46:31,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:46:31,333 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2022-11-20 10:46:31,333 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2022-11-20 10:46:31,334 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-20 10:46:31,334 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 10 states and 12 transitions. [2022-11-20 10:46:31,335 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2022-11-20 10:46:31,335 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-11-20 10:46:31,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 12 transitions. [2022-11-20 10:46:31,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 10:46:31,335 INFO L218 hiAutomatonCegarLoop]: Abstraction has 10 states and 12 transitions. [2022-11-20 10:46:31,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 12 transitions. [2022-11-20 10:46:31,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 7. [2022-11-20 10:46:31,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 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) [2022-11-20 10:46:31,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2022-11-20 10:46:31,338 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 9 transitions. [2022-11-20 10:46:31,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:46:31,339 INFO L428 stractBuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2022-11-20 10:46:31,340 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-20 10:46:31,340 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2022-11-20 10:46:31,340 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-20 10:46:31,341 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 10:46:31,341 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 10:46:31,341 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-20 10:46:31,341 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-20 10:46:31,342 INFO L748 eck$LassoCheckResult]: Stem: 158#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 159#L-1 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_~c~0#1, main_~x~0#1, main_~y~0#1;havoc main_~c~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~c~0#1 := 0; 160#L12-2 assume !!!(main_~x~0#1 == main_~y~0#1); 155#L12 [2022-11-20 10:46:31,342 INFO L750 eck$LassoCheckResult]: Loop: 155#L12 assume main_~x~0#1 > main_~y~0#1;main_~y~0#1 := 1 + main_~y~0#1; 154#L12-2 assume !!!(main_~x~0#1 == main_~y~0#1); 155#L12 [2022-11-20 10:46:31,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:46:31,343 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2022-11-20 10:46:31,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:46:31,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990387837] [2022-11-20 10:46:31,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:46:31,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:46:31,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:46:31,349 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:46:31,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:46:31,353 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:46:31,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:46:31,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1406, now seen corresponding path program 1 times [2022-11-20 10:46:31,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:46:31,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355554360] [2022-11-20 10:46:31,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:46:31,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:46:31,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:46:31,361 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:46:31,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:46:31,365 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:46:31,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:46:31,366 INFO L85 PathProgramCache]: Analyzing trace with hash 28699749, now seen corresponding path program 2 times [2022-11-20 10:46:31,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:46:31,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029787696] [2022-11-20 10:46:31,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:46:31,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:46:31,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:46:31,373 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:46:31,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:46:31,379 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:46:31,415 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 10:46:31,415 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 10:46:31,415 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 10:46:31,415 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 10:46:31,415 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 10:46:31,415 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:46:31,416 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 10:46:31,416 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 10:46:31,416 INFO L133 ssoRankerPreferences]: Filename of dumped script: a.10.c_Iteration3_Loop [2022-11-20 10:46:31,416 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 10:46:31,416 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 10:46:31,419 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:46:31,424 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:46:31,436 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:46:31,521 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 10:46:31,521 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 10:46:31,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:46:31,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:46:31,524 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:46:31,529 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:46:31,529 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:46:31,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-11-20 10:46:31,558 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 10:46:31,558 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 10:46:31,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2022-11-20 10:46:31,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:46:31,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:46:31,567 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:46:31,578 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:46:31,578 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:46:31,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-11-20 10:46:31,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-11-20 10:46:31,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:46:31,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:46:31,631 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:46:31,649 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 10:46:31,649 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:46:31,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-11-20 10:46:32,023 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 10:46:32,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-11-20 10:46:32,028 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 10:46:32,028 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 10:46:32,028 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 10:46:32,028 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 10:46:32,028 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 10:46:32,028 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:46:32,029 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 10:46:32,029 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 10:46:32,029 INFO L133 ssoRankerPreferences]: Filename of dumped script: a.10.c_Iteration3_Loop [2022-11-20 10:46:32,029 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 10:46:32,029 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 10:46:32,030 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:46:32,054 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:46:32,059 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:46:32,144 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 10:46:32,144 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 10:46:32,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:46:32,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:46:32,146 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:46:32,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-11-20 10:46:32,162 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 [2022-11-20 10:46:32,178 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:46:32,178 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:46:32,178 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:46:32,178 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:46:32,178 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:46:32,180 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:46:32,180 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:46:32,211 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 10:46:32,216 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2022-11-20 10:46:32,216 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-20 10:46:32,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:46:32,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:46:32,221 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:46:32,232 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 10:46:32,233 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 10:46:32,233 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 10:46:32,233 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1, ULTIMATE.start_main_~x~0#1) = -1*ULTIMATE.start_main_~y~0#1 + 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2022-11-20 10:46:32,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-11-20 10:46:32,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-11-20 10:46:32,245 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 10:46:32,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:46:32,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:32,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:46:32,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:46:32,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:32,287 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:46:32,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:46:32,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:46:32,362 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 [2022-11-20 10:46:32,362 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-11-20 10:46:32,385 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 12 states and 14 transitions. Complement of second has 5 states. [2022-11-20 10:46:32,386 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 [2022-11-20 10:46:32,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-11-20 10:46:32,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2022-11-20 10:46:32,390 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2022-11-20 10:46:32,390 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:46:32,390 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2022-11-20 10:46:32,390 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:46:32,390 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 4 letters. [2022-11-20 10:46:32,391 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:46:32,391 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 14 transitions. [2022-11-20 10:46:32,396 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-20 10:46:32,398 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 8 states and 9 transitions. [2022-11-20 10:46:32,399 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2022-11-20 10:46:32,399 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2022-11-20 10:46:32,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2022-11-20 10:46:32,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 10:46:32,400 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 9 transitions. [2022-11-20 10:46:32,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2022-11-20 10:46:32,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2022-11-20 10:46:32,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 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) [2022-11-20 10:46:32,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2022-11-20 10:46:32,403 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 8 transitions. [2022-11-20 10:46:32,404 INFO L428 stractBuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2022-11-20 10:46:32,404 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-20 10:46:32,404 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2022-11-20 10:46:32,405 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-20 10:46:32,405 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 10:46:32,405 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 10:46:32,406 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2022-11-20 10:46:32,406 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-20 10:46:32,407 INFO L748 eck$LassoCheckResult]: Stem: 212#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 213#L-1 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_~c~0#1, main_~x~0#1, main_~y~0#1;havoc main_~c~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~c~0#1 := 0; 208#L12-2 assume !!!(main_~x~0#1 == main_~y~0#1); 209#L12 assume !(main_~x~0#1 > main_~y~0#1);main_~x~0#1 := 1 + main_~x~0#1; 210#L12-2 assume !!!(main_~x~0#1 == main_~y~0#1); 211#L12 [2022-11-20 10:46:32,407 INFO L750 eck$LassoCheckResult]: Loop: 211#L12 assume main_~x~0#1 > main_~y~0#1;main_~y~0#1 := 1 + main_~y~0#1; 214#L12-2 assume !!!(main_~x~0#1 == main_~y~0#1); 211#L12 [2022-11-20 10:46:32,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:46:32,408 INFO L85 PathProgramCache]: Analyzing trace with hash 28699811, now seen corresponding path program 2 times [2022-11-20 10:46:32,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:46:32,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149583284] [2022-11-20 10:46:32,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:46:32,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:46:32,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:46:32,422 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:46:32,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:46:32,427 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:46:32,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:46:32,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1406, now seen corresponding path program 2 times [2022-11-20 10:46:32,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:46:32,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326433148] [2022-11-20 10:46:32,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:46:32,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:46:32,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:46:32,434 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:46:32,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:46:32,445 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:46:32,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:46:32,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1810715040, now seen corresponding path program 2 times [2022-11-20 10:46:32,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:46:32,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14396162] [2022-11-20 10:46:32,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:46:32,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:46:32,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:32,568 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:46:32,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:46:32,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14396162] [2022-11-20 10:46:32,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14396162] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:46:32,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:46:32,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:46:32,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439334386] [2022-11-20 10:46:32,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:46:32,596 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 10:46:32,597 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 10:46:32,597 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 10:46:32,597 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 10:46:32,597 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 10:46:32,597 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:46:32,597 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 10:46:32,597 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 10:46:32,598 INFO L133 ssoRankerPreferences]: Filename of dumped script: a.10.c_Iteration4_Loop [2022-11-20 10:46:32,598 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 10:46:32,598 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 10:46:32,600 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:46:32,610 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:46:32,615 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:46:32,664 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 10:46:32,664 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 10:46:32,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:46:32,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:46:32,666 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:46:32,677 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:46:32,677 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:46:32,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-11-20 10:46:32,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-11-20 10:46:32,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:46:32,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:46:32,733 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:46:32,740 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 10:46:32,740 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:46:32,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-11-20 10:46:33,184 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 10:46:33,188 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2022-11-20 10:46:33,188 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 10:46:33,188 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 10:46:33,188 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 10:46:33,188 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 10:46:33,188 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 10:46:33,188 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:46:33,188 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 10:46:33,188 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 10:46:33,189 INFO L133 ssoRankerPreferences]: Filename of dumped script: a.10.c_Iteration4_Loop [2022-11-20 10:46:33,189 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 10:46:33,189 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 10:46:33,190 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:46:33,204 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:46:33,217 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:46:33,272 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 10:46:33,272 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 10:46:33,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:46:33,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:46:33,274 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:46:33,278 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 [2022-11-20 10:46:33,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-11-20 10:46:33,292 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:46:33,292 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:46:33,292 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:46:33,292 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:46:33,293 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:46:33,294 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:46:33,295 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:46:33,311 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 10:46:33,315 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-20 10:46:33,315 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-20 10:46:33,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:46:33,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:46:33,320 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:46:33,323 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 10:46:33,324 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 10:46:33,324 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 10:46:33,324 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1, ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~x~0#1 - 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2022-11-20 10:46:33,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-11-20 10:46:33,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2022-11-20 10:46:33,336 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 10:46:33,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:46:33,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:33,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:46:33,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:46:33,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:33,383 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:46:33,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:46:33,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:46:33,417 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 [2022-11-20 10:46:33,417 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-11-20 10:46:33,428 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 8 states and 9 transitions. Complement of second has 3 states. [2022-11-20 10:46:33,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2022-11-20 10:46:33,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-11-20 10:46:33,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2022-11-20 10:46:33,433 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 5 letters. Loop has 2 letters. [2022-11-20 10:46:33,433 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:46:33,433 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-20 10:46:33,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:46:33,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:33,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:46:33,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:46:33,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:33,477 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:46:33,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:46:33,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:46:33,500 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 [2022-11-20 10:46:33,501 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-11-20 10:46:33,506 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 8 states and 9 transitions. Complement of second has 3 states. [2022-11-20 10:46:33,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2022-11-20 10:46:33,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-11-20 10:46:33,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2022-11-20 10:46:33,508 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 5 letters. Loop has 2 letters. [2022-11-20 10:46:33,508 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:46:33,508 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-20 10:46:33,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:46:33,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:33,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:46:33,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:46:33,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:33,555 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:46:33,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:46:33,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:46:33,609 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 [2022-11-20 10:46:33,609 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-11-20 10:46:33,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-11-20 10:46:33,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2022-11-20 10:46:33,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-11-20 10:46:33,640 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 9 states and 10 transitions. Complement of second has 4 states. [2022-11-20 10:46:33,641 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 [2022-11-20 10:46:33,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-11-20 10:46:33,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2022-11-20 10:46:33,642 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2022-11-20 10:46:33,643 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:46:33,643 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 2 letters. [2022-11-20 10:46:33,643 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:46:33,643 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 4 letters. [2022-11-20 10:46:33,644 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:46:33,644 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2022-11-20 10:46:33,644 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-20 10:46:33,644 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 0 states and 0 transitions. [2022-11-20 10:46:33,645 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-11-20 10:46:33,645 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-11-20 10:46:33,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-11-20 10:46:33,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:46:33,645 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 10:46:33,645 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 10:46:33,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:46:33,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:46:33,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:46:33,646 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-11-20 10:46:33,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:46:33,646 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-11-20 10:46:33,646 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2022-11-20 10:46:33,647 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-20 10:46:33,647 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 10:46:33,647 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-11-20 10:46:33,647 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-11-20 10:46:33,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-11-20 10:46:33,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:46:33,647 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 10:46:33,647 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 10:46:33,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 10:46:33,648 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 10:46:33,648 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-11-20 10:46:33,649 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-11-20 10:46:33,649 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-20 10:46:33,649 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-11-20 10:46:33,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 10:46:33 BoogieIcfgContainer [2022-11-20 10:46:33,659 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-20 10:46:33,659 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 10:46:33,660 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 10:46:33,660 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 10:46:33,660 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:46:28" (3/4) ... [2022-11-20 10:46:33,664 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-20 10:46:33,664 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 10:46:33,665 INFO L158 Benchmark]: Toolchain (without parser) took 6092.53ms. Allocated memory is still 159.4MB. Free memory was 131.4MB in the beginning and 124.6MB in the end (delta: 6.8MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. [2022-11-20 10:46:33,666 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 107.0MB. Free memory was 56.1MB in the beginning and 56.0MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:46:33,666 INFO L158 Benchmark]: CACSL2BoogieTranslator took 319.94ms. Allocated memory is still 159.4MB. Free memory was 130.7MB in the beginning and 122.3MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-20 10:46:33,667 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.55ms. Allocated memory is still 159.4MB. Free memory was 122.3MB in the beginning and 120.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:46:33,667 INFO L158 Benchmark]: Boogie Preprocessor took 27.13ms. Allocated memory is still 159.4MB. Free memory was 120.9MB in the beginning and 119.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:46:33,668 INFO L158 Benchmark]: RCFGBuilder took 337.23ms. Allocated memory is still 159.4MB. Free memory was 119.4MB in the beginning and 111.0MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-20 10:46:33,668 INFO L158 Benchmark]: BuchiAutomizer took 5346.23ms. Allocated memory is still 159.4MB. Free memory was 111.0MB in the beginning and 125.7MB in the end (delta: -14.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:46:33,669 INFO L158 Benchmark]: Witness Printer took 4.81ms. Allocated memory is still 159.4MB. Free memory was 125.7MB in the beginning and 124.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:46:33,672 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 107.0MB. Free memory was 56.1MB in the beginning and 56.0MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 319.94ms. Allocated memory is still 159.4MB. Free memory was 130.7MB in the beginning and 122.3MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.55ms. Allocated memory is still 159.4MB. Free memory was 122.3MB in the beginning and 120.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 27.13ms. Allocated memory is still 159.4MB. Free memory was 120.9MB in the beginning and 119.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 337.23ms. Allocated memory is still 159.4MB. Free memory was 119.4MB in the beginning and 111.0MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 5346.23ms. Allocated memory is still 159.4MB. Free memory was 111.0MB in the beginning and 125.7MB in the end (delta: -14.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.81ms. Allocated memory is still 159.4MB. Free memory was 125.7MB in the beginning and 124.6MB 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 6 terminating modules (2 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function y + -1 * x and consists of 5 locations. One deterministic module has affine ranking function y + -1 * x and consists of 3 locations. One deterministic module has affine ranking function -1 * y + x and consists of 3 locations. One nondeterministic module has affine ranking function -1 * y + x and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.2s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 4.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.7s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 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, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 30 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 24 mSDsluCounter, 36 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 40 IncrementalHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 29 mSDtfsCounter, 40 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax182 hnf100 lsp54 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq169 hnf95 smp68 dnf100 smp100 tf112 neg94 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 58ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.7s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-11-20 10:46:33,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df449982-90c7-42b1-b8c8-e54af95e6084/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE