./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-numeric/twisted.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35128dfb-0b44-4c79-8bd7-a82ae222b77e/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35128dfb-0b44-4c79-8bd7-a82ae222b77e/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35128dfb-0b44-4c79-8bd7-a82ae222b77e/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35128dfb-0b44-4c79-8bd7-a82ae222b77e/bin/uautomizer-WNIpwEf4Nt/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-numeric/twisted.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35128dfb-0b44-4c79-8bd7-a82ae222b77e/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35128dfb-0b44-4c79-8bd7-a82ae222b77e/bin/uautomizer-WNIpwEf4Nt --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 56facc094037ea8aa088ee9a4faafddcfe652feb .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:14:35,818 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:14:35,822 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:14:35,884 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:14:35,884 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:14:35,888 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:14:35,890 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:14:35,894 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:14:35,897 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:14:35,902 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:14:35,903 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:14:35,905 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:14:35,906 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:14:35,908 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:14:35,911 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:14:35,915 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:14:35,917 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:14:35,918 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:14:35,921 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:14:35,928 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:14:35,930 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:14:35,932 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:14:35,935 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:14:35,936 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:14:35,946 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:14:35,946 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:14:35,947 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:14:35,949 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:14:35,950 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:14:35,951 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:14:35,952 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:14:35,953 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:14:35,955 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:14:35,956 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:14:35,958 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:14:35,958 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:14:35,959 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:14:35,959 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:14:35,959 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:14:35,960 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:14:35,962 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:14:35,963 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35128dfb-0b44-4c79-8bd7-a82ae222b77e/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-13 00:14:36,020 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:14:36,020 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:14:36,021 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:14:36,021 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:14:36,023 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:14:36,023 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:14:36,023 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:14:36,024 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-13 00:14:36,024 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-13 00:14:36,024 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-13 00:14:36,025 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-13 00:14:36,026 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-13 00:14:36,026 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-13 00:14:36,026 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:14:36,026 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 00:14:36,027 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:14:36,027 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:14:36,027 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-13 00:14:36,027 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-13 00:14:36,028 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-13 00:14:36,028 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 00:14:36,028 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-13 00:14:36,029 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:14:36,029 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-13 00:14:36,029 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:14:36,029 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:14:36,031 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:14:36,031 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:14:36,032 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:14:36,033 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-13 00:14:36,033 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_35128dfb-0b44-4c79-8bd7-a82ae222b77e/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35128dfb-0b44-4c79-8bd7-a82ae222b77e/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 56facc094037ea8aa088ee9a4faafddcfe652feb [2021-10-13 00:14:36,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:14:36,330 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:14:36,332 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:14:36,333 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:14:36,333 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:14:36,334 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35128dfb-0b44-4c79-8bd7-a82ae222b77e/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/termination-numeric/twisted.c [2021-10-13 00:14:36,421 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35128dfb-0b44-4c79-8bd7-a82ae222b77e/bin/uautomizer-WNIpwEf4Nt/data/2a02eeaab/bd515bcadcc34525a5b61b4d3aa953ca/FLAG32b3619f1 [2021-10-13 00:14:36,930 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:14:36,931 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35128dfb-0b44-4c79-8bd7-a82ae222b77e/sv-benchmarks/c/termination-numeric/twisted.c [2021-10-13 00:14:36,945 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35128dfb-0b44-4c79-8bd7-a82ae222b77e/bin/uautomizer-WNIpwEf4Nt/data/2a02eeaab/bd515bcadcc34525a5b61b4d3aa953ca/FLAG32b3619f1 [2021-10-13 00:14:37,267 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35128dfb-0b44-4c79-8bd7-a82ae222b77e/bin/uautomizer-WNIpwEf4Nt/data/2a02eeaab/bd515bcadcc34525a5b61b4d3aa953ca [2021-10-13 00:14:37,270 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:14:37,271 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 00:14:37,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:14:37,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:14:37,276 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:14:37,277 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:14:37" (1/1) ... [2021-10-13 00:14:37,278 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@451be7d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:14:37, skipping insertion in model container [2021-10-13 00:14:37,278 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:14:37" (1/1) ... [2021-10-13 00:14:37,286 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:14:37,297 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:14:37,456 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:14:37,459 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:14:37,474 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:14:37,487 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:14:37,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:14:37 WrapperNode [2021-10-13 00:14:37,488 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:14:37,490 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 00:14:37,490 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 00:14:37,490 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 00:14:37,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:14:37" (1/1) ... [2021-10-13 00:14:37,505 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:14:37" (1/1) ... [2021-10-13 00:14:37,529 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 00:14:37,531 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:14:37,531 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:14:37,531 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:14:37,545 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:14:37" (1/1) ... [2021-10-13 00:14:37,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:14:37" (1/1) ... [2021-10-13 00:14:37,546 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:14:37" (1/1) ... [2021-10-13 00:14:37,546 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:14:37" (1/1) ... [2021-10-13 00:14:37,548 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:14:37" (1/1) ... [2021-10-13 00:14:37,552 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:14:37" (1/1) ... [2021-10-13 00:14:37,552 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:14:37" (1/1) ... [2021-10-13 00:14:37,554 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:14:37,555 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:14:37,555 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:14:37,555 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:14:37,556 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:14:37" (1/1) ... [2021-10-13 00:14:37,564 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:14:37,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35128dfb-0b44-4c79-8bd7-a82ae222b77e/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:14:37,589 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35128dfb-0b44-4c79-8bd7-a82ae222b77e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:14:37,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35128dfb-0b44-4c79-8bd7-a82ae222b77e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-13 00:14:37,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:14:37,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:14:37,820 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:14:37,821 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-13 00:14:37,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:14:37 BoogieIcfgContainer [2021-10-13 00:14:37,823 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:14:37,824 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-13 00:14:37,824 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-13 00:14:37,828 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-13 00:14:37,828 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 00:14:37,829 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.10 12:14:37" (1/3) ... [2021-10-13 00:14:37,830 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1bc3d9d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.10 12:14:37, skipping insertion in model container [2021-10-13 00:14:37,830 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 00:14:37,830 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:14:37" (2/3) ... [2021-10-13 00:14:37,831 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1bc3d9d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.10 12:14:37, skipping insertion in model container [2021-10-13 00:14:37,831 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 00:14:37,831 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:14:37" (3/3) ... [2021-10-13 00:14:37,833 INFO L389 chiAutomizerObserver]: Analyzing ICFG twisted.c [2021-10-13 00:14:37,880 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-13 00:14:37,880 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-13 00:14:37,880 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-13 00:14:37,880 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-13 00:14:37,881 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-13 00:14:37,881 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-13 00:14:37,881 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-13 00:14:37,881 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-13 00:14:37,896 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:14:37,915 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-10-13 00:14:37,915 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:14:37,916 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:14:37,921 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-13 00:14:37,922 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-13 00:14:37,922 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-13 00:14:37,922 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:14:37,924 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-10-13 00:14:37,924 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:14:37,924 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:14:37,924 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-13 00:14:37,925 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-13 00:14:37,931 INFO L791 eck$LassoCheckResult]: Stem: 7#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4;f_#in~k, f_#in~l := main_#t~nondet2, main_#t~nondet3;havoc f_#res;havoc f_#t~post0, f_#t~post1, f_~k, f_~l, f_~i~0, f_~j~0;f_~k := f_#in~k;f_~l := f_#in~l;f_~i~0 := 0;f_~j~0 := 0; 6#L18true [2021-10-13 00:14:37,932 INFO L793 eck$LassoCheckResult]: Loop: 6#L18true assume !true; 8#L13true goto; 4#L16true assume !!(f_~j~0 < f_~l);f_#t~post1 := f_~j~0;f_~j~0 := 1 + f_#t~post1;havoc f_#t~post1; 10#L15true assume !(0 != (if f_~i~0 < 0 && 0 != f_~i~0 % 2 then f_~i~0 % 2 - 2 else f_~i~0 % 2)); 6#L18true [2021-10-13 00:14:37,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:14:37,938 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-10-13 00:14:37,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:14:37,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035676351] [2021-10-13 00:14:37,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:14:37,948 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:14:38,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:14:38,027 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:14:38,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:14:38,049 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:14:38,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:14:38,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1450986, now seen corresponding path program 1 times [2021-10-13 00:14:38,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:14:38,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994735684] [2021-10-13 00:14:38,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:14:38,054 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:14:38,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:14:38,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:14:38,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:14:38,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994735684] [2021-10-13 00:14:38,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994735684] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:14:38,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:14:38,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 00:14:38,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312599608] [2021-10-13 00:14:38,102 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 00:14:38,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:14:38,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 00:14:38,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 00:14:38,145 INFO L87 Difference]: Start difference. First operand has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 1 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) [2021-10-13 00:14:38,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:14:38,151 INFO L93 Difference]: Finished difference Result 12 states and 15 transitions. [2021-10-13 00:14:38,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 00:14:38,153 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 15 transitions. [2021-10-13 00:14:38,154 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-10-13 00:14:38,157 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 7 states and 10 transitions. [2021-10-13 00:14:38,171 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-10-13 00:14:38,171 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-10-13 00:14:38,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2021-10-13 00:14:38,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 00:14:38,172 INFO L681 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2021-10-13 00:14:38,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2021-10-13 00:14:38,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-10-13 00:14:38,212 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) [2021-10-13 00:14:38,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2021-10-13 00:14:38,214 INFO L704 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2021-10-13 00:14:38,214 INFO L587 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2021-10-13 00:14:38,214 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-13 00:14:38,214 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2021-10-13 00:14:38,215 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-10-13 00:14:38,215 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:14:38,215 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:14:38,216 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-13 00:14:38,216 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-10-13 00:14:38,216 INFO L791 eck$LassoCheckResult]: Stem: 38#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4;f_#in~k, f_#in~l := main_#t~nondet2, main_#t~nondet3;havoc f_#res;havoc f_#t~post0, f_#t~post1, f_~k, f_~l, f_~i~0, f_~j~0;f_~k := f_#in~k;f_~l := f_#in~l;f_~i~0 := 0;f_~j~0 := 0; 37#L18 [2021-10-13 00:14:38,222 INFO L793 eck$LassoCheckResult]: Loop: 37#L18 goto; 32#L9 assume !(f_~i~0 < f_~k); 33#L13 goto; 35#L16 assume !!(f_~j~0 < f_~l);f_#t~post1 := f_~j~0;f_~j~0 := 1 + f_#t~post1;havoc f_#t~post1; 36#L15 assume !(0 != (if f_~i~0 < 0 && 0 != f_~i~0 % 2 then f_~i~0 % 2 - 2 else f_~i~0 % 2)); 37#L18 [2021-10-13 00:14:38,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:14:38,223 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2021-10-13 00:14:38,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:14:38,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953293365] [2021-10-13 00:14:38,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:14:38,224 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:14:38,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:14:38,246 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:14:38,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:14:38,251 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:14:38,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:14:38,252 INFO L82 PathProgramCache]: Analyzing trace with hash 33506102, now seen corresponding path program 1 times [2021-10-13 00:14:38,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:14:38,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534221242] [2021-10-13 00:14:38,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:14:38,252 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:14:38,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:14:38,269 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:14:38,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:14:38,297 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:14:38,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:14:38,298 INFO L82 PathProgramCache]: Analyzing trace with hash 921009783, now seen corresponding path program 1 times [2021-10-13 00:14:38,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:14:38,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071936675] [2021-10-13 00:14:38,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:14:38,299 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:14:38,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:14:38,332 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:14:38,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:14:38,357 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:14:38,435 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 00:14:38,435 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 00:14:38,436 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 00:14:38,436 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 00:14:38,436 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 00:14:38,436 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:14:38,436 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 00:14:38,436 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 00:14:38,437 INFO L133 ssoRankerPreferences]: Filename of dumped script: twisted.c_Iteration2_Loop [2021-10-13 00:14:38,437 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 00:14:38,437 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 00:14:38,453 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:14:38,459 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:14:38,466 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:14:38,548 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 00:14:38,548 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 00:14:38,551 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:14:38,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35128dfb-0b44-4c79-8bd7-a82ae222b77e/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:14:38,553 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35128dfb-0b44-4c79-8bd7-a82ae222b77e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:14:38,560 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:14:38,560 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:14:38,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35128dfb-0b44-4c79-8bd7-a82ae222b77e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-13 00:14:38,591 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:14:38,592 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_f_#t~post1=0} Honda state: {ULTIMATE.start_f_#t~post1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 00:14:38,623 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35128dfb-0b44-4c79-8bd7-a82ae222b77e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2021-10-13 00:14:38,623 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:14:38,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35128dfb-0b44-4c79-8bd7-a82ae222b77e/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:14:38,625 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35128dfb-0b44-4c79-8bd7-a82ae222b77e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:14:38,632 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:14:38,632 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:14:38,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35128dfb-0b44-4c79-8bd7-a82ae222b77e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-13 00:14:38,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35128dfb-0b44-4c79-8bd7-a82ae222b77e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-13 00:14:38,683 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:14:38,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35128dfb-0b44-4c79-8bd7-a82ae222b77e/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:14:38,685 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35128dfb-0b44-4c79-8bd7-a82ae222b77e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:14:38,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35128dfb-0b44-4c79-8bd7-a82ae222b77e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-13 00:14:38,700 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 00:14:38,700 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:14:38,867 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 00:14:38,870 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35128dfb-0b44-4c79-8bd7-a82ae222b77e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2021-10-13 00:14:38,871 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 00:14:38,871 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 00:14:38,871 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 00:14:38,871 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 00:14:38,871 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 00:14:38,871 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:14:38,871 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 00:14:38,871 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 00:14:38,871 INFO L133 ssoRankerPreferences]: Filename of dumped script: twisted.c_Iteration2_Loop [2021-10-13 00:14:38,871 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 00:14:38,872 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 00:14:38,873 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:14:38,886 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:14:38,892 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:14:38,977 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 00:14:38,982 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 00:14:38,983 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:14:38,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35128dfb-0b44-4c79-8bd7-a82ae222b77e/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:14:38,987 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35128dfb-0b44-4c79-8bd7-a82ae222b77e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:14:38,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35128dfb-0b44-4c79-8bd7-a82ae222b77e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-13 00:14:38,996 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 00:14:39,010 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:14:39,010 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:14:39,011 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:14:39,011 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:14:39,011 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:14:39,013 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:14:39,013 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:14:39,027 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 00:14:39,033 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-13 00:14:39,033 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-13 00:14:39,034 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:14:39,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35128dfb-0b44-4c79-8bd7-a82ae222b77e/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:14:39,036 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35128dfb-0b44-4c79-8bd7-a82ae222b77e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:14:39,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35128dfb-0b44-4c79-8bd7-a82ae222b77e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-13 00:14:39,041 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 00:14:39,042 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 00:14:39,042 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 00:14:39,043 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_f_~j~0, ULTIMATE.start_f_~l) = -1*ULTIMATE.start_f_~j~0 + 1*ULTIMATE.start_f_~l Supporting invariants [] [2021-10-13 00:14:39,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35128dfb-0b44-4c79-8bd7-a82ae222b77e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-13 00:14:39,067 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-13 00:14:39,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:14:39,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:14:39,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:14:39,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:14:39,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:14:39,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:14:39,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:14:39,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:14:39,199 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-13 00:14:39,200 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 4 Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:14:39,233 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 4. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 15 states and 22 transitions. Complement of second has 4 states. [2021-10-13 00:14:39,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-13 00:14:39,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:14:39,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2021-10-13 00:14:39,236 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 1 letters. Loop has 5 letters. [2021-10-13 00:14:39,238 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:14:39,238 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 5 letters. [2021-10-13 00:14:39,238 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:14:39,239 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 1 letters. Loop has 10 letters. [2021-10-13 00:14:39,240 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:14:39,240 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 22 transitions. [2021-10-13 00:14:39,242 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-13 00:14:39,243 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 12 states and 17 transitions. [2021-10-13 00:14:39,243 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2021-10-13 00:14:39,244 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2021-10-13 00:14:39,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2021-10-13 00:14:39,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 00:14:39,244 INFO L681 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2021-10-13 00:14:39,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2021-10-13 00:14:39,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2021-10-13 00:14:39,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:14:39,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 16 transitions. [2021-10-13 00:14:39,247 INFO L704 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2021-10-13 00:14:39,247 INFO L587 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2021-10-13 00:14:39,247 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-13 00:14:39,248 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 16 transitions. [2021-10-13 00:14:39,248 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-13 00:14:39,248 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:14:39,249 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:14:39,249 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-13 00:14:39,249 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-13 00:14:39,249 INFO L791 eck$LassoCheckResult]: Stem: 101#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4;f_#in~k, f_#in~l := main_#t~nondet2, main_#t~nondet3;havoc f_#res;havoc f_#t~post0, f_#t~post1, f_~k, f_~l, f_~i~0, f_~j~0;f_~k := f_#in~k;f_~l := f_#in~l;f_~i~0 := 0;f_~j~0 := 0; 102#L18 goto; 92#L9 [2021-10-13 00:14:39,250 INFO L793 eck$LassoCheckResult]: Loop: 92#L9 assume !!(f_~i~0 < f_~k);f_#t~post0 := f_~i~0;f_~i~0 := 1 + f_#t~post0;havoc f_#t~post0; 93#L8 assume 0 != (if f_~i~0 < 0 && 0 != f_~i~0 % 2 then f_~i~0 % 2 - 2 else f_~i~0 % 2); 92#L9 [2021-10-13 00:14:39,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:14:39,251 INFO L82 PathProgramCache]: Analyzing trace with hash 997, now seen corresponding path program 1 times [2021-10-13 00:14:39,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:14:39,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433775597] [2021-10-13 00:14:39,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:14:39,252 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:14:39,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:14:39,257 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:14:39,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:14:39,262 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:14:39,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:14:39,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2021-10-13 00:14:39,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:14:39,263 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147663366] [2021-10-13 00:14:39,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:14:39,264 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:14:39,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:14:39,276 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:14:39,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:14:39,284 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:14:39,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:14:39,285 INFO L82 PathProgramCache]: Analyzing trace with hash 958440, now seen corresponding path program 1 times [2021-10-13 00:14:39,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:14:39,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121285180] [2021-10-13 00:14:39,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:14:39,286 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:14:39,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:14:39,301 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:14:39,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:14:39,318 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:14:39,351 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 00:14:39,351 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 00:14:39,352 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 00:14:39,352 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 00:14:39,353 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 00:14:39,353 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:14:39,353 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 00:14:39,353 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 00:14:39,353 INFO L133 ssoRankerPreferences]: Filename of dumped script: twisted.c_Iteration3_Loop [2021-10-13 00:14:39,353 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 00:14:39,354 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 00:14:39,358 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:14:39,361 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:14:39,470 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 00:14:39,471 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 00:14:39,471 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:14:39,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35128dfb-0b44-4c79-8bd7-a82ae222b77e/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:14:39,475 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35128dfb-0b44-4c79-8bd7-a82ae222b77e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:14:39,483 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:14:39,484 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:14:39,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35128dfb-0b44-4c79-8bd7-a82ae222b77e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-13 00:14:39,507 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:14:39,507 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_f_#t~post0=0} Honda state: {ULTIMATE.start_f_#t~post0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 00:14:39,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35128dfb-0b44-4c79-8bd7-a82ae222b77e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-13 00:14:39,546 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:14:39,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35128dfb-0b44-4c79-8bd7-a82ae222b77e/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:14:39,547 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35128dfb-0b44-4c79-8bd7-a82ae222b77e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:14:39,555 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:14:39,555 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:14:39,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35128dfb-0b44-4c79-8bd7-a82ae222b77e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-13 00:14:39,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35128dfb-0b44-4c79-8bd7-a82ae222b77e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-13 00:14:39,621 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:14:39,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35128dfb-0b44-4c79-8bd7-a82ae222b77e/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:14:39,623 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35128dfb-0b44-4c79-8bd7-a82ae222b77e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:14:39,629 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 00:14:39,629 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:14:39,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35128dfb-0b44-4c79-8bd7-a82ae222b77e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-13 00:14:39,898 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 00:14:39,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35128dfb-0b44-4c79-8bd7-a82ae222b77e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-13 00:14:39,905 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 00:14:39,905 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 00:14:39,905 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 00:14:39,905 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 00:14:39,906 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 00:14:39,906 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:14:39,906 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 00:14:39,906 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 00:14:39,906 INFO L133 ssoRankerPreferences]: Filename of dumped script: twisted.c_Iteration3_Loop [2021-10-13 00:14:39,906 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 00:14:39,906 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 00:14:39,907 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:14:39,919 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:14:39,979 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 00:14:39,979 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 00:14:39,979 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:14:39,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35128dfb-0b44-4c79-8bd7-a82ae222b77e/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:14:39,980 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35128dfb-0b44-4c79-8bd7-a82ae222b77e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:14:39,991 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 00:14:40,000 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:14:40,000 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:14:40,001 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:14:40,001 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:14:40,001 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:14:40,004 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:14:40,004 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:14:40,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35128dfb-0b44-4c79-8bd7-a82ae222b77e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-13 00:14:40,015 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 00:14:40,029 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-10-13 00:14:40,029 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-13 00:14:40,030 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:14:40,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35128dfb-0b44-4c79-8bd7-a82ae222b77e/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:14:40,056 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35128dfb-0b44-4c79-8bd7-a82ae222b77e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:14:40,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35128dfb-0b44-4c79-8bd7-a82ae222b77e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-13 00:14:40,058 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 00:14:40,058 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 00:14:40,058 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 00:14:40,059 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_f_~i~0, ULTIMATE.start_f_~k) = -1*ULTIMATE.start_f_~i~0 + 1*ULTIMATE.start_f_~k Supporting invariants [] [2021-10-13 00:14:40,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35128dfb-0b44-4c79-8bd7-a82ae222b77e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-13 00:14:40,097 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-13 00:14:40,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:14:40,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:14:40,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:14:40,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:14:40,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:14:40,125 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:14:40,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:14:40,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:14:40,147 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-13 00:14:40,148 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 7 Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:14:40,165 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 7. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 21 states and 31 transitions. Complement of second has 4 states. [2021-10-13 00:14:40,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-13 00:14:40,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:14:40,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 13 transitions. [2021-10-13 00:14:40,167 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 2 letters. Loop has 2 letters. [2021-10-13 00:14:40,167 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:14:40,167 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 4 letters. Loop has 2 letters. [2021-10-13 00:14:40,167 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:14:40,167 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 2 letters. Loop has 4 letters. [2021-10-13 00:14:40,168 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:14:40,168 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 31 transitions. [2021-10-13 00:14:40,169 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-13 00:14:40,170 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 0 states and 0 transitions. [2021-10-13 00:14:40,170 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-13 00:14:40,170 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-13 00:14:40,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-13 00:14:40,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 00:14:40,170 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:14:40,170 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:14:40,170 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:14:40,170 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-13 00:14:40,171 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-13 00:14:40,171 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-13 00:14:40,171 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-13 00:14:40,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.10 12:14:40 BoogieIcfgContainer [2021-10-13 00:14:40,177 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-13 00:14:40,178 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:14:40,178 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:14:40,178 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:14:40,178 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:14:37" (3/4) ... [2021-10-13 00:14:40,181 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 00:14:40,181 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:14:40,183 INFO L168 Benchmark]: Toolchain (without parser) took 2910.60 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 75.6 MB in the beginning and 64.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 32.7 MB. Max. memory is 16.1 GB. [2021-10-13 00:14:40,183 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 109.1 MB. Free memory is still 64.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:14:40,184 INFO L168 Benchmark]: CACSL2BoogieTranslator took 215.51 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 75.4 MB in the beginning and 108.0 MB in the end (delta: -32.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:14:40,185 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.16 ms. Allocated memory is still 132.1 MB. Free memory was 108.0 MB in the beginning and 106.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:14:40,185 INFO L168 Benchmark]: Boogie Preprocessor took 23.22 ms. Allocated memory is still 132.1 MB. Free memory was 106.8 MB in the beginning and 105.9 MB in the end (delta: 879.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:14:40,186 INFO L168 Benchmark]: RCFGBuilder took 268.58 ms. Allocated memory is still 132.1 MB. Free memory was 105.9 MB in the beginning and 97.5 MB in the end (delta: 8.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 00:14:40,187 INFO L168 Benchmark]: BuchiAutomizer took 2352.95 ms. Allocated memory is still 132.1 MB. Free memory was 97.1 MB in the beginning and 65.5 MB in the end (delta: 31.6 MB). Peak memory consumption was 33.7 MB. Max. memory is 16.1 GB. [2021-10-13 00:14:40,187 INFO L168 Benchmark]: Witness Printer took 3.71 ms. Allocated memory is still 132.1 MB. Free memory was 65.5 MB in the beginning and 64.9 MB in the end (delta: 622.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:14:40,190 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 109.1 MB. Free memory is still 64.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 215.51 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 75.4 MB in the beginning and 108.0 MB in the end (delta: -32.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.16 ms. Allocated memory is still 132.1 MB. Free memory was 108.0 MB in the beginning and 106.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.22 ms. Allocated memory is still 132.1 MB. Free memory was 106.8 MB in the beginning and 105.9 MB in the end (delta: 879.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 268.58 ms. Allocated memory is still 132.1 MB. Free memory was 105.9 MB in the beginning and 97.5 MB in the end (delta: 8.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 2352.95 ms. Allocated memory is still 132.1 MB. Free memory was 97.1 MB in the beginning and 65.5 MB in the end (delta: 31.6 MB). Peak memory consumption was 33.7 MB. Max. memory is 16.1 GB. * Witness Printer took 3.71 ms. Allocated memory is still 132.1 MB. Free memory was 65.5 MB in the beginning and 64.9 MB in the end (delta: 622.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function l + -1 * j and consists of 3 locations. One deterministic module has affine ranking function k + -1 * i and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 2 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.3s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 1.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 1. Automata minimization 30.7ms AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 11 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 29 SDtfs, 17 SDslu, 11 SDs, 0 SdLazy, 12 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.0ms Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax100 hnf100 lsp77 ukn100 mio100 lsp100 div400 bol100 ite100 ukn100 eq145 hnf48 smp86 dnf100 smp100 tf106 neg98 sie105 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 59ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-10-13 00:14:40,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35128dfb-0b44-4c79-8bd7-a82ae222b77e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-13 00:14:40,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35128dfb-0b44-4c79-8bd7-a82ae222b77e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-13 00:14:40,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35128dfb-0b44-4c79-8bd7-a82ae222b77e/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...