./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 4e7fbc69 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_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS --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 4cf25ea48272ba4463d41281066a1cec5687f4083cfa8522d5a9622c6308689c --- 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-4e7fbc6 [2022-11-23 01:53:46,780 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 01:53:46,782 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 01:53:46,804 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 01:53:46,805 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 01:53:46,806 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 01:53:46,807 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 01:53:46,809 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 01:53:46,810 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 01:53:46,811 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 01:53:46,812 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 01:53:46,813 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 01:53:46,814 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 01:53:46,815 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 01:53:46,816 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 01:53:46,817 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 01:53:46,818 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 01:53:46,819 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 01:53:46,821 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 01:53:46,822 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 01:53:46,824 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 01:53:46,832 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 01:53:46,833 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 01:53:46,833 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 01:53:46,839 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 01:53:46,844 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 01:53:46,844 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 01:53:46,845 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 01:53:46,845 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 01:53:46,846 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 01:53:46,848 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 01:53:46,849 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 01:53:46,850 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 01:53:46,851 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 01:53:46,853 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 01:53:46,853 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 01:53:46,854 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 01:53:46,855 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 01:53:46,855 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 01:53:46,856 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 01:53:46,858 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 01:53:46,859 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-11-23 01:53:46,898 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 01:53:46,898 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 01:53:46,898 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 01:53:46,899 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 01:53:46,900 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 01:53:46,900 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 01:53:46,900 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 01:53:46,900 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-23 01:53:46,900 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-23 01:53:46,901 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-23 01:53:46,902 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-23 01:53:46,902 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-23 01:53:46,902 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-23 01:53:46,902 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 01:53:46,902 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 01:53:46,903 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 01:53:46,903 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 01:53:46,903 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-23 01:53:46,903 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-23 01:53:46,903 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-23 01:53:46,904 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 01:53:46,904 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-23 01:53:46,904 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 01:53:46,904 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-23 01:53:46,905 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 01:53:46,905 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 01:53:46,905 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 01:53:46,906 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 01:53:46,906 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-23 01:53:46,907 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_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4cf25ea48272ba4463d41281066a1cec5687f4083cfa8522d5a9622c6308689c [2022-11-23 01:53:47,173 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 01:53:47,202 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 01:53:47,204 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 01:53:47,206 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 01:53:47,206 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 01:53:47,208 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig1.c [2022-11-23 01:53:50,097 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 01:53:50,355 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 01:53:50,356 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig1.c [2022-11-23 01:53:50,368 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/data/12fc618ed/8f599dfdd5b245a0ba92320e3137a295/FLAG2b82ae529 [2022-11-23 01:53:50,382 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/data/12fc618ed/8f599dfdd5b245a0ba92320e3137a295 [2022-11-23 01:53:50,387 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 01:53:50,389 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 01:53:50,392 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 01:53:50,394 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 01:53:50,397 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 01:53:50,398 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:53:50" (1/1) ... [2022-11-23 01:53:50,399 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4549c2af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:50, skipping insertion in model container [2022-11-23 01:53:50,399 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:53:50" (1/1) ... [2022-11-23 01:53:50,405 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 01:53:50,423 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 01:53:50,553 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 01:53:50,558 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 01:53:50,570 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 01:53:50,581 INFO L208 MainTranslator]: Completed translation [2022-11-23 01:53:50,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:50 WrapperNode [2022-11-23 01:53:50,582 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 01:53:50,583 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 01:53:50,583 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 01:53:50,584 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 01:53:50,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:50" (1/1) ... [2022-11-23 01:53:50,595 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:50" (1/1) ... [2022-11-23 01:53:50,610 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2022-11-23 01:53:50,610 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 01:53:50,611 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 01:53:50,611 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 01:53:50,611 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 01:53:50,619 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:50" (1/1) ... [2022-11-23 01:53:50,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:50" (1/1) ... [2022-11-23 01:53:50,620 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:50" (1/1) ... [2022-11-23 01:53:50,620 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:50" (1/1) ... [2022-11-23 01:53:50,622 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:50" (1/1) ... [2022-11-23 01:53:50,626 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:50" (1/1) ... [2022-11-23 01:53:50,628 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:50" (1/1) ... [2022-11-23 01:53:50,628 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:50" (1/1) ... [2022-11-23 01:53:50,629 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 01:53:50,631 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 01:53:50,632 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 01:53:50,632 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 01:53:50,633 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:50" (1/1) ... [2022-11-23 01:53:50,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-23 01:53:50,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:53:50,667 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-23 01:53:50,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-23 01:53:50,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 01:53:50,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 01:53:50,788 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 01:53:50,790 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 01:53:50,879 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 01:53:50,885 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 01:53:50,886 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-23 01:53:50,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:53:50 BoogieIcfgContainer [2022-11-23 01:53:50,887 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 01:53:50,888 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-23 01:53:50,889 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-23 01:53:50,892 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-23 01:53:50,893 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-23 01:53:50,893 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.11 01:53:50" (1/3) ... [2022-11-23 01:53:50,894 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@42b8c1fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 01:53:50, skipping insertion in model container [2022-11-23 01:53:50,894 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-23 01:53:50,894 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:53:50" (2/3) ... [2022-11-23 01:53:50,896 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@42b8c1fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 01:53:50, skipping insertion in model container [2022-11-23 01:53:50,896 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-23 01:53:50,896 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:53:50" (3/3) ... [2022-11-23 01:53:50,899 INFO L332 chiAutomizerObserver]: Analyzing ICFG PodelskiRybalchenko-LICS2004-Fig1.c [2022-11-23 01:53:50,979 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-23 01:53:50,979 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-23 01:53:50,979 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-23 01:53:50,979 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-23 01:53:50,979 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-23 01:53:50,980 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-23 01:53:50,980 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-23 01:53:50,980 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-23 01:53:50,986 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:53:51,002 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-23 01:53:51,002 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-23 01:53:51,002 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-23 01:53:51,007 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-23 01:53:51,007 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-23 01:53:51,007 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-23 01:53:51,008 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:53:51,008 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-23 01:53:51,009 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-23 01:53:51,009 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-23 01:53:51,009 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-23 01:53:51,009 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-23 01:53:51,021 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_~x~0#1, main_~y~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; 4#L17-2true [2022-11-23 01:53:51,021 INFO L750 eck$LassoCheckResult]: Loop: 4#L17-2true assume !!(main_~x~0#1 >= 0 && main_~x~0#1 <= 1073741823);main_~y~0#1 := 1; 2#L19-2true assume !(main_~y~0#1 < main_~x~0#1); 9#L19-3true main_~x~0#1 := main_~x~0#1 - 1; 4#L17-2true [2022-11-23 01:53:51,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:53:51,027 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-11-23 01:53:51,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:53:51,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629411196] [2022-11-23 01:53:51,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:53:51,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:53:51,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 01:53:51,122 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 01:53:51,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 01:53:51,152 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-23 01:53:51,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:53:51,155 INFO L85 PathProgramCache]: Analyzing trace with hash 40944, now seen corresponding path program 1 times [2022-11-23 01:53:51,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:53:51,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978353976] [2022-11-23 01:53:51,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:53:51,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:53:51,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 01:53:51,166 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 01:53:51,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 01:53:51,172 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-23 01:53:51,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:53:51,174 INFO L85 PathProgramCache]: Analyzing trace with hash 28699886, now seen corresponding path program 1 times [2022-11-23 01:53:51,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:53:51,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696266846] [2022-11-23 01:53:51,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:53:51,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:53:51,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 01:53:51,181 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 01:53:51,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 01:53:51,199 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-23 01:53:51,282 INFO L210 LassoAnalysis]: Preferences: [2022-11-23 01:53:51,282 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-23 01:53:51,282 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-23 01:53:51,282 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-23 01:53:51,283 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-23 01:53:51,283 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-23 01:53:51,283 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-23 01:53:51,283 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-23 01:53:51,283 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-LICS2004-Fig1.c_Iteration1_Loop [2022-11-23 01:53:51,283 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-23 01:53:51,284 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-23 01:53:51,300 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-23 01:53:51,311 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-23 01:53:51,315 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-23 01:53:51,397 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-23 01:53:51,397 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-23 01:53:51,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-23 01:53:51,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:53:51,403 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-23 01:53:51,416 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-23 01:53:51,416 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-23 01:53:51,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-11-23 01:53:51,458 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-23 01:53:51,458 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: [] [2022-11-23 01:53:51,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-11-23 01:53:51,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-23 01:53:51,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:53:51,465 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-23 01:53:51,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-11-23 01:53:51,472 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-23 01:53:51,473 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-23 01:53:51,498 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-23 01:53:51,498 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: [] [2022-11-23 01:53:51,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-11-23 01:53:51,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-23 01:53:51,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:53:51,510 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-23 01:53:51,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-23 01:53:51,519 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-23 01:53:51,520 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-23 01:53:51,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-11-23 01:53:51,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-23 01:53:51,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:53:51,563 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-23 01:53:51,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-23 01:53:51,567 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-23 01:53:51,567 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-23 01:53:51,627 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-23 01:53:51,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-11-23 01:53:51,633 INFO L210 LassoAnalysis]: Preferences: [2022-11-23 01:53:51,634 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-23 01:53:51,634 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-23 01:53:51,634 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-23 01:53:51,634 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-23 01:53:51,634 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-23 01:53:51,634 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-23 01:53:51,634 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-23 01:53:51,635 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-LICS2004-Fig1.c_Iteration1_Loop [2022-11-23 01:53:51,635 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-23 01:53:51,635 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-23 01:53:51,637 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-23 01:53:51,641 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-23 01:53:51,662 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-23 01:53:51,736 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-23 01:53:51,740 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-23 01:53:51,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-23 01:53:51,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:53:51,743 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-23 01:53:51,752 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 [2022-11-23 01:53:51,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-11-23 01:53:51,763 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-23 01:53:51,763 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-23 01:53:51,764 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-23 01:53:51,764 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-23 01:53:51,769 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-23 01:53:51,769 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-23 01:53:51,783 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-23 01:53:51,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-11-23 01:53:51,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-23 01:53:51,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:53:51,793 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-23 01:53:51,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-11-23 01:53:51,796 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 [2022-11-23 01:53:51,806 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-23 01:53:51,806 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-23 01:53:51,807 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-23 01:53:51,807 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-23 01:53:51,807 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-23 01:53:51,809 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-23 01:53:51,809 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-23 01:53:51,821 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-23 01:53:51,827 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-23 01:53:51,827 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-23 01:53:51,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-23 01:53:51,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:53:51,854 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-23 01:53:51,855 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-23 01:53:51,856 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-23 01:53:51,856 INFO L513 LassoAnalysis]: Proved termination. [2022-11-23 01:53:51,856 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 2*ULTIMATE.start_main_~x~0#1 + 1 Supporting invariants [] [2022-11-23 01:53:51,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-11-23 01:53:51,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-11-23 01:53:51,870 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-23 01:53:51,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:53:51,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:51,921 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 01:53:51,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:53:51,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:51,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 01:53:51,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:53:51,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:53:52,025 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 [2022-11-23 01:53:52,027 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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) [2022-11-23 01:53:52,085 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). 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 24 states and 36 transitions. Complement of second has 7 states. [2022-11-23 01:53:52,087 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 [2022-11-23 01:53:52,092 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) [2022-11-23 01:53:52,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 22 transitions. [2022-11-23 01:53:52,094 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 2 letters. Loop has 3 letters. [2022-11-23 01:53:52,095 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-23 01:53:52,095 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 5 letters. Loop has 3 letters. [2022-11-23 01:53:52,095 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-23 01:53:52,095 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 2 letters. Loop has 6 letters. [2022-11-23 01:53:52,096 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-23 01:53:52,096 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 36 transitions. [2022-11-23 01:53:52,099 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-11-23 01:53:52,101 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 8 states and 11 transitions. [2022-11-23 01:53:52,102 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2022-11-23 01:53:52,103 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2022-11-23 01:53:52,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2022-11-23 01:53:52,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-23 01:53:52,103 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2022-11-23 01:53:52,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2022-11-23 01:53:52,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2022-11-23 01:53:52,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 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) [2022-11-23 01:53:52,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2022-11-23 01:53:52,123 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 10 transitions. [2022-11-23 01:53:52,123 INFO L428 stractBuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2022-11-23 01:53:52,124 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-23 01:53:52,124 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2022-11-23 01:53:52,124 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-11-23 01:53:52,124 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-23 01:53:52,124 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-23 01:53:52,125 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-23 01:53:52,125 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-11-23 01:53:52,125 INFO L748 eck$LassoCheckResult]: Stem: 79#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 80#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_~x~0#1, main_~y~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; 77#L17-2 assume !!(main_~x~0#1 >= 0 && main_~x~0#1 <= 1073741823);main_~y~0#1 := 1; 74#L19-2 [2022-11-23 01:53:52,125 INFO L750 eck$LassoCheckResult]: Loop: 74#L19-2 assume !!(main_~y~0#1 < main_~x~0#1);main_~y~0#1 := 2 * main_~y~0#1; 74#L19-2 [2022-11-23 01:53:52,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:53:52,126 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2022-11-23 01:53:52,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:53:52,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073401658] [2022-11-23 01:53:52,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:53:52,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:53:52,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 01:53:52,131 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 01:53:52,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 01:53:52,134 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-23 01:53:52,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:53:52,135 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 1 times [2022-11-23 01:53:52,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:53:52,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380044039] [2022-11-23 01:53:52,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:53:52,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:53:52,155 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2022-11-23 01:53:52,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 01:53:52,159 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 01:53:52,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 01:53:52,162 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-23 01:53:52,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:53:52,163 INFO L85 PathProgramCache]: Analyzing trace with hash 925804, now seen corresponding path program 1 times [2022-11-23 01:53:52,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:53:52,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616434552] [2022-11-23 01:53:52,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:53:52,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:53:52,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 01:53:52,168 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 01:53:52,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 01:53:52,172 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-23 01:53:52,205 INFO L210 LassoAnalysis]: Preferences: [2022-11-23 01:53:52,205 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-23 01:53:52,205 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-23 01:53:52,206 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-23 01:53:52,206 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-23 01:53:52,206 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-23 01:53:52,206 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-23 01:53:52,206 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-23 01:53:52,206 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-LICS2004-Fig1.c_Iteration2_Lasso [2022-11-23 01:53:52,206 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-23 01:53:52,207 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-23 01:53:52,208 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-23 01:53:52,212 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-23 01:53:52,223 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-23 01:53:52,225 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-23 01:53:52,228 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-23 01:53:52,231 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-23 01:53:52,286 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-23 01:53:52,286 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-23 01:53:52,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-23 01:53:52,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:53:52,288 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-23 01:53:52,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-11-23 01:53:52,294 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-23 01:53:52,294 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-23 01:53:52,312 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-23 01:53:52,312 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: [] [2022-11-23 01:53:52,319 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2022-11-23 01:53:52,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-23 01:53:52,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:53:52,321 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-23 01:53:52,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-11-23 01:53:52,324 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-23 01:53:52,325 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-23 01:53:52,358 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2022-11-23 01:53:52,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-23 01:53:52,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:53:52,360 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-23 01:53:52,373 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-23 01:53:52,373 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-23 01:53:52,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-11-23 01:54:04,458 INFO L442 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2022-11-23 01:54:04,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-11-23 01:54:04,471 INFO L210 LassoAnalysis]: Preferences: [2022-11-23 01:54:04,471 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-23 01:54:04,471 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-23 01:54:04,471 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-23 01:54:04,471 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-23 01:54:04,471 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-23 01:54:04,472 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-23 01:54:04,472 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-23 01:54:04,472 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-LICS2004-Fig1.c_Iteration2_Lasso [2022-11-23 01:54:04,472 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-23 01:54:04,472 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-23 01:54:04,474 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-23 01:54:04,497 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-23 01:54:04,509 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-23 01:54:04,512 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-23 01:54:04,515 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-23 01:54:04,518 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-23 01:54:04,589 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-23 01:54:04,589 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-23 01:54:04,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-23 01:54:04,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:54:04,591 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-23 01:54:04,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-11-23 01:54:04,596 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 [2022-11-23 01:54:04,609 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-23 01:54:04,609 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-23 01:54:04,609 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-23 01:54:04,609 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-23 01:54:04,613 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-23 01:54:04,613 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-23 01:54:04,626 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-23 01:54:04,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-11-23 01:54:04,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-23 01:54:04,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:54:04,637 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-23 01:54:04,651 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 [2022-11-23 01:54:04,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-11-23 01:54:04,664 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-23 01:54:04,664 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-23 01:54:04,664 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-23 01:54:04,664 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-23 01:54:04,670 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-23 01:54:04,670 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-23 01:54:04,686 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-23 01:54:04,730 INFO L443 ModelExtractionUtils]: Simplification made 8 calls to the SMT solver. [2022-11-23 01:54:04,730 INFO L444 ModelExtractionUtils]: 1 out of 10 variables were initially zero. Simplification set additionally 4 variables to zero. [2022-11-23 01:54:04,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-23 01:54:04,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:54:04,732 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-23 01:54:04,740 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-23 01:54:04,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-11-23 01:54:04,788 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2022-11-23 01:54:04,788 INFO L513 LassoAnalysis]: Proved termination. [2022-11-23 01:54:04,789 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 [1*ULTIMATE.start_main_~y~0#1 - 1 >= 0] [2022-11-23 01:54:04,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-11-23 01:54:04,806 INFO L156 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2022-11-23 01:54:04,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:54:04,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:54:04,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 01:54:04,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:54:04,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:54:04,851 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 01:54:04,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:54:04,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:54:04,853 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2022-11-23 01:54:04,853 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2022-11-23 01:54:04,896 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 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 14 states and 19 transitions. Complement of second has 5 states. [2022-11-23 01:54:04,896 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 [2022-11-23 01:54:04,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2022-11-23 01:54:04,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2022-11-23 01:54:04,898 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 1 letters. [2022-11-23 01:54:04,898 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-23 01:54:04,898 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 4 letters. Loop has 1 letters. [2022-11-23 01:54:04,898 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-23 01:54:04,898 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2022-11-23 01:54:04,899 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-23 01:54:04,899 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 19 transitions. [2022-11-23 01:54:04,900 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-11-23 01:54:04,901 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 10 states and 14 transitions. [2022-11-23 01:54:04,901 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2022-11-23 01:54:04,902 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2022-11-23 01:54:04,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 14 transitions. [2022-11-23 01:54:04,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-23 01:54:04,902 INFO L218 hiAutomatonCegarLoop]: Abstraction has 10 states and 14 transitions. [2022-11-23 01:54:04,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 14 transitions. [2022-11-23 01:54:04,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 7. [2022-11-23 01:54:04,907 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) [2022-11-23 01:54:04,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2022-11-23 01:54:04,908 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 9 transitions. [2022-11-23 01:54:04,908 INFO L428 stractBuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2022-11-23 01:54:04,908 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-23 01:54:04,908 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2022-11-23 01:54:04,910 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-11-23 01:54:04,912 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-23 01:54:04,912 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-23 01:54:04,912 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2022-11-23 01:54:04,913 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-11-23 01:54:04,913 INFO L748 eck$LassoCheckResult]: Stem: 140#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 141#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_~x~0#1, main_~y~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; 138#L17-2 assume !!(main_~x~0#1 >= 0 && main_~x~0#1 <= 1073741823);main_~y~0#1 := 1; 136#L19-2 assume !(main_~y~0#1 < main_~x~0#1); 137#L19-3 main_~x~0#1 := main_~x~0#1 - 1; 139#L17-2 assume !!(main_~x~0#1 >= 0 && main_~x~0#1 <= 1073741823);main_~y~0#1 := 1; 135#L19-2 [2022-11-23 01:54:04,914 INFO L750 eck$LassoCheckResult]: Loop: 135#L19-2 assume !!(main_~y~0#1 < main_~x~0#1);main_~y~0#1 := 2 * main_~y~0#1; 135#L19-2 [2022-11-23 01:54:04,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:54:04,914 INFO L85 PathProgramCache]: Analyzing trace with hash 889696477, now seen corresponding path program 2 times [2022-11-23 01:54:04,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:54:04,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808525576] [2022-11-23 01:54:04,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:54:04,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:54:04,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 01:54:04,932 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 01:54:04,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 01:54:04,936 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-23 01:54:04,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:54:04,937 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 2 times [2022-11-23 01:54:04,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:54:04,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615592903] [2022-11-23 01:54:04,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:54:04,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:54:04,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 01:54:04,940 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 01:54:04,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 01:54:04,945 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-23 01:54:04,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:54:04,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1810787031, now seen corresponding path program 1 times [2022-11-23 01:54:04,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:54:04,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506279138] [2022-11-23 01:54:04,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:54:04,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:54:04,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:54:05,083 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:54:05,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:54:05,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506279138] [2022-11-23 01:54:05,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506279138] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:54:05,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419624351] [2022-11-23 01:54:05,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:54:05,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:54:05,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:54:05,086 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:54:05,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-23 01:54:05,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:54:05,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 01:54:05,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:54:05,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:54:05,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 01:54:05,231 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:54:05,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419624351] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 01:54:05,232 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 01:54:05,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-11-23 01:54:05,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635564655] [2022-11-23 01:54:05,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 01:54:05,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:54:05,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 01:54:05,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-23 01:54:05,251 INFO L87 Difference]: Start difference. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:54:05,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:54:05,372 INFO L93 Difference]: Finished difference Result 21 states and 26 transitions. [2022-11-23 01:54:05,372 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 26 transitions. [2022-11-23 01:54:05,377 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-11-23 01:54:05,377 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 11 states and 13 transitions. [2022-11-23 01:54:05,377 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2022-11-23 01:54:05,377 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2022-11-23 01:54:05,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 13 transitions. [2022-11-23 01:54:05,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-23 01:54:05,378 INFO L218 hiAutomatonCegarLoop]: Abstraction has 11 states and 13 transitions. [2022-11-23 01:54:05,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 13 transitions. [2022-11-23 01:54:05,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-23 01:54:05,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 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) [2022-11-23 01:54:05,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2022-11-23 01:54:05,381 INFO L240 hiAutomatonCegarLoop]: Abstraction has 9 states and 11 transitions. [2022-11-23 01:54:05,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 01:54:05,382 INFO L428 stractBuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2022-11-23 01:54:05,383 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-23 01:54:05,383 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 11 transitions. [2022-11-23 01:54:05,384 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-11-23 01:54:05,384 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-23 01:54:05,384 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-23 01:54:05,385 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2022-11-23 01:54:05,385 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-11-23 01:54:05,386 INFO L748 eck$LassoCheckResult]: Stem: 229#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 230#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_~x~0#1, main_~y~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; 227#L17-2 assume !!(main_~x~0#1 >= 0 && main_~x~0#1 <= 1073741823);main_~y~0#1 := 1; 225#L19-2 assume !!(main_~y~0#1 < main_~x~0#1);main_~y~0#1 := 2 * main_~y~0#1; 226#L19-2 assume !!(main_~y~0#1 < main_~x~0#1);main_~y~0#1 := 2 * main_~y~0#1; 232#L19-2 assume !(main_~y~0#1 < main_~x~0#1); 231#L19-3 main_~x~0#1 := main_~x~0#1 - 1; 228#L17-2 assume !!(main_~x~0#1 >= 0 && main_~x~0#1 <= 1073741823);main_~y~0#1 := 1; 224#L19-2 [2022-11-23 01:54:05,386 INFO L750 eck$LassoCheckResult]: Loop: 224#L19-2 assume !!(main_~y~0#1 < main_~x~0#1);main_~y~0#1 := 2 * main_~y~0#1; 224#L19-2 [2022-11-23 01:54:05,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:54:05,386 INFO L85 PathProgramCache]: Analyzing trace with hash 301557853, now seen corresponding path program 2 times [2022-11-23 01:54:05,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:54:05,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738793053] [2022-11-23 01:54:05,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:54:05,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:54:05,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 01:54:05,406 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 01:54:05,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 01:54:05,423 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-23 01:54:05,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:54:05,424 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 3 times [2022-11-23 01:54:05,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:54:05,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131654304] [2022-11-23 01:54:05,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:54:05,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:54:05,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 01:54:05,427 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 01:54:05,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 01:54:05,428 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-23 01:54:05,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:54:05,429 INFO L85 PathProgramCache]: Analyzing trace with hash 758358871, now seen corresponding path program 3 times [2022-11-23 01:54:05,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:54:05,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066422304] [2022-11-23 01:54:05,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:54:05,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:54:05,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 01:54:05,436 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 01:54:05,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 01:54:05,452 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-23 01:54:05,518 INFO L210 LassoAnalysis]: Preferences: [2022-11-23 01:54:05,518 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-23 01:54:05,518 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-23 01:54:05,519 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-23 01:54:05,520 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-23 01:54:05,521 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-23 01:54:05,521 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-23 01:54:05,521 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-23 01:54:05,521 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-LICS2004-Fig1.c_Iteration4_Lasso [2022-11-23 01:54:05,521 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-23 01:54:05,521 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-23 01:54:05,524 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-23 01:54:05,536 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-23 01:54:05,539 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-23 01:54:05,542 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-23 01:54:05,545 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-23 01:54:05,547 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-23 01:54:05,614 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-23 01:54:05,614 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-23 01:54:05,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-23 01:54:05,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:54:05,619 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-23 01:54:05,625 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-23 01:54:05,625 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-23 01:54:05,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-11-23 01:54:05,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-11-23 01:54:05,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-23 01:54:05,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:54:05,655 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-23 01:54:05,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-11-23 01:54:05,667 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-23 01:54:05,667 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-23 01:54:05,764 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-23 01:54:05,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-11-23 01:54:05,768 INFO L210 LassoAnalysis]: Preferences: [2022-11-23 01:54:05,768 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-23 01:54:05,768 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-23 01:54:05,768 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-23 01:54:05,768 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-23 01:54:05,768 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-23 01:54:05,768 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-23 01:54:05,768 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-23 01:54:05,768 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-LICS2004-Fig1.c_Iteration4_Lasso [2022-11-23 01:54:05,768 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-23 01:54:05,768 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-23 01:54:05,770 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-23 01:54:05,785 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-23 01:54:05,788 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-23 01:54:05,793 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-23 01:54:05,796 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-23 01:54:05,799 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-23 01:54:05,872 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-23 01:54:05,872 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-23 01:54:05,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-23 01:54:05,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:54:05,875 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-23 01:54:05,880 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 [2022-11-23 01:54:05,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-11-23 01:54:05,892 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-23 01:54:05,892 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-23 01:54:05,892 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-23 01:54:05,892 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-23 01:54:05,897 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-23 01:54:05,897 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-23 01:54:05,910 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-23 01:54:05,920 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2022-11-23 01:54:05,920 INFO L444 ModelExtractionUtils]: 2 out of 10 variables were initially zero. Simplification set additionally 3 variables to zero. [2022-11-23 01:54:05,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-23 01:54:05,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:54:05,927 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-23 01:54:05,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-11-23 01:54:05,935 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-23 01:54:05,960 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2022-11-23 01:54:05,960 INFO L513 LassoAnalysis]: Proved termination. [2022-11-23 01:54:05,960 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 [1*ULTIMATE.start_main_~y~0#1 - 1 >= 0] [2022-11-23 01:54:05,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2022-11-23 01:54:05,972 INFO L156 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2022-11-23 01:54:06,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:54:06,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:54:06,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 01:54:06,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:54:06,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:54:06,030 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 01:54:06,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:54:06,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:54:06,032 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2022-11-23 01:54:06,032 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 11 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2022-11-23 01:54:06,062 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 11 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 16 states and 20 transitions. Complement of second has 5 states. [2022-11-23 01:54:06,063 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 [2022-11-23 01:54:06,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2022-11-23 01:54:06,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2022-11-23 01:54:06,065 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 8 letters. Loop has 1 letters. [2022-11-23 01:54:06,065 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-23 01:54:06,065 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-23 01:54:06,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:54:06,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:54:06,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 01:54:06,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:54:06,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-11-23 01:54:06,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:54:06,146 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 01:54:06,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:54:06,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:54:06,151 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2022-11-23 01:54:06,152 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 11 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2022-11-23 01:54:06,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-11-23 01:54:06,184 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 11 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 16 states and 20 transitions. Complement of second has 5 states. [2022-11-23 01:54:06,185 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 [2022-11-23 01:54:06,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2022-11-23 01:54:06,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2022-11-23 01:54:06,186 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 8 letters. Loop has 1 letters. [2022-11-23 01:54:06,186 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-23 01:54:06,187 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-23 01:54:06,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:54:06,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:54:06,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 01:54:06,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:54:06,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:54:06,234 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 01:54:06,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:54:06,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:54:06,235 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 1 loop predicates [2022-11-23 01:54:06,235 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 11 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2022-11-23 01:54:06,264 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 11 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 12 states and 14 transitions. Complement of second has 4 states. [2022-11-23 01:54:06,265 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 [2022-11-23 01:54:06,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2022-11-23 01:54:06,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2022-11-23 01:54:06,266 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 8 letters. Loop has 1 letters. [2022-11-23 01:54:06,266 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-23 01:54:06,266 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 9 letters. Loop has 1 letters. [2022-11-23 01:54:06,267 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-23 01:54:06,267 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 8 letters. Loop has 2 letters. [2022-11-23 01:54:06,267 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-23 01:54:06,267 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 14 transitions. [2022-11-23 01:54:06,267 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-23 01:54:06,268 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 0 states and 0 transitions. [2022-11-23 01:54:06,268 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-11-23 01:54:06,268 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-11-23 01:54:06,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-11-23 01:54:06,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 01:54:06,268 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-23 01:54:06,268 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-23 01:54:06,268 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-23 01:54:06,268 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-11-23 01:54:06,268 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-11-23 01:54:06,268 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-23 01:54:06,268 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-11-23 01:54:06,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.11 01:54:06 BoogieIcfgContainer [2022-11-23 01:54:06,279 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-23 01:54:06,280 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 01:54:06,280 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 01:54:06,280 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 01:54:06,281 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:53:50" (3/4) ... [2022-11-23 01:54:06,283 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 01:54:06,283 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 01:54:06,284 INFO L158 Benchmark]: Toolchain (without parser) took 15894.79ms. Allocated memory was 159.4MB in the beginning and 192.9MB in the end (delta: 33.6MB). Free memory was 128.3MB in the beginning and 151.8MB in the end (delta: -23.5MB). Peak memory consumption was 11.4MB. Max. memory is 16.1GB. [2022-11-23 01:54:06,284 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 159.4MB. Free memory is still 101.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 01:54:06,289 INFO L158 Benchmark]: CACSL2BoogieTranslator took 190.50ms. Allocated memory is still 159.4MB. Free memory was 127.7MB in the beginning and 119.1MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-23 01:54:06,289 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.08ms. Allocated memory is still 159.4MB. Free memory was 119.1MB in the beginning and 117.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 01:54:06,290 INFO L158 Benchmark]: Boogie Preprocessor took 19.18ms. Allocated memory is still 159.4MB. Free memory was 117.5MB in the beginning and 116.5MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 01:54:06,290 INFO L158 Benchmark]: RCFGBuilder took 256.12ms. Allocated memory is still 159.4MB. Free memory was 116.5MB in the beginning and 108.1MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-23 01:54:06,290 INFO L158 Benchmark]: BuchiAutomizer took 15390.88ms. Allocated memory was 159.4MB in the beginning and 192.9MB in the end (delta: 33.6MB). Free memory was 108.1MB in the beginning and 151.8MB in the end (delta: -43.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 01:54:06,291 INFO L158 Benchmark]: Witness Printer took 3.32ms. Allocated memory is still 192.9MB. Free memory is still 151.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 01:54:06,293 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 159.4MB. Free memory is still 101.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 190.50ms. Allocated memory is still 159.4MB. Free memory was 127.7MB in the beginning and 119.1MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.08ms. Allocated memory is still 159.4MB. Free memory was 119.1MB in the beginning and 117.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.18ms. Allocated memory is still 159.4MB. Free memory was 117.5MB in the beginning and 116.5MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 256.12ms. Allocated memory is still 159.4MB. Free memory was 116.5MB in the beginning and 108.1MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 15390.88ms. Allocated memory was 159.4MB in the beginning and 192.9MB in the end (delta: 33.6MB). Free memory was 108.1MB in the beginning and 151.8MB in the end (delta: -43.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.32ms. Allocated memory is still 192.9MB. Free memory is still 151.8MB. There was no memory consumed. 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 4 terminating modules (1 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 2 * x + 1 and consists of 5 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. 1 modules have a trivial ranking function, the largest among these consists of 10 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 15.3s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 14.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 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 [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 35 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 34 mSDsluCounter, 33 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 31 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 78 IncrementalHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 31 mSolverCounterUnsat, 23 mSDtfsCounter, 78 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso2 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax164 hnf100 lsp60 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq153 hnf93 smp100 dnf100 smp100 tf102 neg97 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 42ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 3 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 1 LassoNonterminationAnalysisTime: 12.5s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-11-23 01:54:06,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-23 01:54:06,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c471e63-9ff7-4ef4-b564-4435c5d5c53f/bin/uautomizer-QkZJyEgLgS/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