./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 e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e23bfb-8b58-4648-85e0-17982a64ed51/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e23bfb-8b58-4648-85e0-17982a64ed51/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e23bfb-8b58-4648-85e0-17982a64ed51/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e23bfb-8b58-4648-85e0-17982a64ed51/bin/uautomizer-j4sWxH34Be/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-numeric/twisted.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e23bfb-8b58-4648-85e0-17982a64ed51/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e23bfb-8b58-4648-85e0-17982a64ed51/bin/uautomizer-j4sWxH34Be --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 1b68c797f7da07f29717590596e5fa31674f85e16d7b32a9335da92aff43a272 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:57:16,710 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:57:16,714 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:57:16,785 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:57:16,786 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:57:16,792 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:57:16,794 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:57:16,799 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:57:16,803 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:57:16,810 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:57:16,811 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:57:16,814 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:57:16,815 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:57:16,818 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:57:16,821 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:57:16,829 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:57:16,832 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:57:16,833 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:57:16,836 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:57:16,845 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:57:16,848 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:57:16,850 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:57:16,854 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:57:16,855 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:57:16,864 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:57:16,864 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:57:16,865 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:57:16,867 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:57:16,868 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:57:16,870 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:57:16,871 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:57:16,872 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:57:16,875 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:57:16,876 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:57:16,878 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:57:16,879 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:57:16,880 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:57:16,880 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:57:16,880 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:57:16,882 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:57:16,883 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:57:16,884 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e23bfb-8b58-4648-85e0-17982a64ed51/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-21 19:57:16,940 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:57:16,940 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:57:16,941 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:57:16,941 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:57:16,943 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:57:16,943 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:57:16,944 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:57:16,944 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-21 19:57:16,944 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-21 19:57:16,945 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-21 19:57:16,946 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-21 19:57:16,946 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-21 19:57:16,947 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-21 19:57:16,947 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:57:16,947 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:57:16,947 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:57:16,948 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:57:16,948 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-21 19:57:16,948 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-21 19:57:16,948 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-21 19:57:16,949 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:57:16,949 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-21 19:57:16,949 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:57:16,950 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-21 19:57:16,950 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:57:16,950 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:57:16,952 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:57:16,953 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:57:16,953 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:57:16,954 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-21 19:57:16,955 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_90e23bfb-8b58-4648-85e0-17982a64ed51/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e23bfb-8b58-4648-85e0-17982a64ed51/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b68c797f7da07f29717590596e5fa31674f85e16d7b32a9335da92aff43a272 [2021-10-21 19:57:17,314 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:57:17,343 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:57:17,347 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:57:17,349 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:57:17,353 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:57:17,354 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e23bfb-8b58-4648-85e0-17982a64ed51/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/termination-numeric/twisted.c [2021-10-21 19:57:17,443 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e23bfb-8b58-4648-85e0-17982a64ed51/bin/uautomizer-j4sWxH34Be/data/b79c80a1d/f97a1924382745f6a5ebed089d6760c2/FLAG081341231 [2021-10-21 19:57:18,114 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:57:18,115 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e23bfb-8b58-4648-85e0-17982a64ed51/sv-benchmarks/c/termination-numeric/twisted.c [2021-10-21 19:57:18,128 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e23bfb-8b58-4648-85e0-17982a64ed51/bin/uautomizer-j4sWxH34Be/data/b79c80a1d/f97a1924382745f6a5ebed089d6760c2/FLAG081341231 [2021-10-21 19:57:18,473 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e23bfb-8b58-4648-85e0-17982a64ed51/bin/uautomizer-j4sWxH34Be/data/b79c80a1d/f97a1924382745f6a5ebed089d6760c2 [2021-10-21 19:57:18,477 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:57:18,481 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:57:18,485 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:57:18,486 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:57:18,491 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:57:18,492 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:57:18" (1/1) ... [2021-10-21 19:57:18,493 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@644288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:57:18, skipping insertion in model container [2021-10-21 19:57:18,494 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:57:18" (1/1) ... [2021-10-21 19:57:18,503 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:57:18,519 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:57:18,730 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:57:18,734 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:57:18,778 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:57:18,794 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:57:18,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:57:18 WrapperNode [2021-10-21 19:57:18,795 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:57:18,797 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:57:18,797 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:57:18,797 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:57:18,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:57:18" (1/1) ... [2021-10-21 19:57:18,813 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:57:18" (1/1) ... [2021-10-21 19:57:18,836 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:57:18,837 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:57:18,837 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:57:18,837 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:57:18,847 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:57:18" (1/1) ... [2021-10-21 19:57:18,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:57:18" (1/1) ... [2021-10-21 19:57:18,848 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:57:18" (1/1) ... [2021-10-21 19:57:18,849 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:57:18" (1/1) ... [2021-10-21 19:57:18,851 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:57:18" (1/1) ... [2021-10-21 19:57:18,856 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:57:18" (1/1) ... [2021-10-21 19:57:18,857 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:57:18" (1/1) ... [2021-10-21 19:57:18,859 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:57:18,860 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:57:18,860 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:57:18,861 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:57:18,862 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:57:18" (1/1) ... [2021-10-21 19:57:18,872 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:57:18,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e23bfb-8b58-4648-85e0-17982a64ed51/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:57:18,901 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e23bfb-8b58-4648-85e0-17982a64ed51/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:57:18,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e23bfb-8b58-4648-85e0-17982a64ed51/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-21 19:57:18,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:57:18,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:57:19,161 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:57:19,162 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-21 19:57:19,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:57:19 BoogieIcfgContainer [2021-10-21 19:57:19,164 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:57:19,165 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-21 19:57:19,166 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-21 19:57:19,170 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-21 19:57:19,181 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:57:19,181 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.10 07:57:18" (1/3) ... [2021-10-21 19:57:19,183 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@69391011 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:57:19, skipping insertion in model container [2021-10-21 19:57:19,183 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:57:19,183 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:57:18" (2/3) ... [2021-10-21 19:57:19,184 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@69391011 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:57:19, skipping insertion in model container [2021-10-21 19:57:19,184 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:57:19,184 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:57:19" (3/3) ... [2021-10-21 19:57:19,186 INFO L389 chiAutomizerObserver]: Analyzing ICFG twisted.c [2021-10-21 19:57:19,273 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-21 19:57:19,273 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-21 19:57:19,273 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-21 19:57:19,273 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-21 19:57:19,274 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-21 19:57:19,274 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-21 19:57:19,274 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-21 19:57:19,274 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-21 19:57:19,296 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) [2021-10-21 19:57:19,319 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-10-21 19:57:19,320 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:57:19,320 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:57:19,326 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-21 19:57:19,327 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-21 19:57:19,327 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-21 19:57:19,327 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) [2021-10-21 19:57:19,330 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-10-21 19:57:19,330 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:57:19,330 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:57:19,331 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-21 19:57:19,331 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-21 19:57:19,339 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 [2021-10-21 19:57:19,339 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 [2021-10-21 19:57:19,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:57:19,352 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-10-21 19:57:19,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:57:19,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063543070] [2021-10-21 19:57:19,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:57:19,366 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:57:19,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:57:19,472 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:57:19,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:57:19,508 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:57:19,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:57:19,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1450986, now seen corresponding path program 1 times [2021-10-21 19:57:19,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:57:19,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007115506] [2021-10-21 19:57:19,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:57:19,515 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:57:19,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:57:19,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:57:19,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:57:19,578 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007115506] [2021-10-21 19:57:19,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007115506] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:57:19,580 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:57:19,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-21 19:57:19,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116134041] [2021-10-21 19:57:19,599 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:57:19,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:57:19,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 19:57:19,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 19:57:19,639 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) [2021-10-21 19:57:19,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:57:19,648 INFO L93 Difference]: Finished difference Result 12 states and 15 transitions. [2021-10-21 19:57:19,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 19:57:19,651 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 15 transitions. [2021-10-21 19:57:19,654 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-10-21 19:57:19,660 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 7 states and 10 transitions. [2021-10-21 19:57:19,661 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-10-21 19:57:19,662 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-10-21 19:57:19,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2021-10-21 19:57:19,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:57:19,663 INFO L681 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2021-10-21 19:57:19,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2021-10-21 19:57:19,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-10-21 19:57:19,694 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) [2021-10-21 19:57:19,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2021-10-21 19:57:19,697 INFO L704 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2021-10-21 19:57:19,697 INFO L587 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2021-10-21 19:57:19,697 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-21 19:57:19,698 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2021-10-21 19:57:19,700 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-10-21 19:57:19,700 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:57:19,700 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:57:19,701 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-21 19:57:19,701 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-10-21 19:57:19,701 INFO L791 eck$LassoCheckResult]: Stem: 38#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4;f_#in~k, f_#in~l := main_#t~nondet2, main_#t~nondet3;havoc f_#res;havoc f_#t~post0, f_#t~post1, f_~k, f_~l, f_~i~0, f_~j~0;f_~k := f_#in~k;f_~l := f_#in~l;f_~i~0 := 0;f_~j~0 := 0; 37#L18 [2021-10-21 19:57:19,701 INFO L793 eck$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 [2021-10-21 19:57:19,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:57:19,703 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2021-10-21 19:57:19,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:57:19,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912663522] [2021-10-21 19:57:19,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:57:19,705 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:57:19,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:57:19,718 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:57:19,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:57:19,732 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:57:19,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:57:19,734 INFO L82 PathProgramCache]: Analyzing trace with hash 33506102, now seen corresponding path program 1 times [2021-10-21 19:57:19,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:57:19,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000207438] [2021-10-21 19:57:19,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:57:19,737 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:57:19,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:57:19,776 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:57:19,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:57:19,806 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:57:19,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:57:19,809 INFO L82 PathProgramCache]: Analyzing trace with hash 921009783, now seen corresponding path program 1 times [2021-10-21 19:57:19,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:57:19,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151958046] [2021-10-21 19:57:19,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:57:19,812 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:57:19,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:57:19,832 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:57:19,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:57:19,864 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:57:19,986 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:57:20,003 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:57:20,003 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:57:20,003 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:57:20,004 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 19:57:20,004 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:57:20,004 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:57:20,004 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:57:20,005 INFO L133 ssoRankerPreferences]: Filename of dumped script: twisted.c_Iteration2_Loop [2021-10-21 19:57:20,005 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:57:20,005 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:57:20,026 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:57:20,033 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:57:20,042 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:57:20,137 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:57:20,148 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 19:57:20,151 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:57:20,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e23bfb-8b58-4648-85e0-17982a64ed51/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:57:20,155 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e23bfb-8b58-4648-85e0-17982a64ed51/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:57:20,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e23bfb-8b58-4648-85e0-17982a64ed51/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-21 19:57:20,160 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:57:20,161 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:57:20,196 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:57:20,196 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: [] [2021-10-21 19:57:20,222 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e23bfb-8b58-4648-85e0-17982a64ed51/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2021-10-21 19:57:20,223 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:57:20,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e23bfb-8b58-4648-85e0-17982a64ed51/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:57:20,224 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e23bfb-8b58-4648-85e0-17982a64ed51/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:57:20,234 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:57:20,234 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:57:20,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e23bfb-8b58-4648-85e0-17982a64ed51/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-21 19:57:20,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e23bfb-8b58-4648-85e0-17982a64ed51/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-21 19:57:20,291 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:57:20,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e23bfb-8b58-4648-85e0-17982a64ed51/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:57:20,293 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e23bfb-8b58-4648-85e0-17982a64ed51/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:57:20,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e23bfb-8b58-4648-85e0-17982a64ed51/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-21 19:57:20,302 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 19:57:20,302 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:57:20,458 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 19:57:20,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e23bfb-8b58-4648-85e0-17982a64ed51/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-21 19:57:20,463 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:57:20,464 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:57:20,464 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:57:20,464 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:57:20,464 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 19:57:20,464 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:57:20,464 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:57:20,464 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:57:20,464 INFO L133 ssoRankerPreferences]: Filename of dumped script: twisted.c_Iteration2_Loop [2021-10-21 19:57:20,464 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:57:20,464 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:57:20,466 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:57:20,474 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:57:20,477 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:57:20,579 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:57:20,584 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 19:57:20,585 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:57:20,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e23bfb-8b58-4648-85e0-17982a64ed51/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:57:20,586 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e23bfb-8b58-4648-85e0-17982a64ed51/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:57:20,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e23bfb-8b58-4648-85e0-17982a64ed51/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-21 19:57:20,590 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 [2021-10-21 19:57:20,598 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:57:20,598 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:57:20,598 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:57:20,598 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:57:20,599 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:57:20,601 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:57:20,601 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:57:20,630 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 19:57:20,637 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-21 19:57:20,637 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-21 19:57:20,639 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:57:20,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e23bfb-8b58-4648-85e0-17982a64ed51/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:57:20,641 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e23bfb-8b58-4648-85e0-17982a64ed51/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:57:20,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e23bfb-8b58-4648-85e0-17982a64ed51/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-21 19:57:20,646 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 19:57:20,646 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 19:57:20,647 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 19:57:20,647 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 [] [2021-10-21 19:57:20,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e23bfb-8b58-4648-85e0-17982a64ed51/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-21 19:57:20,672 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 19:57:20,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:57:20,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:57:20,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:57:20,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:57:20,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:57:20,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:57:20,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:57:20,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:57:20,862 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 [2021-10-21 19:57:20,863 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) [2021-10-21 19:57:20,895 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. [2021-10-21 19:57:20,896 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 [2021-10-21 19:57:20,897 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) [2021-10-21 19:57:20,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2021-10-21 19:57:20,899 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 1 letters. Loop has 5 letters. [2021-10-21 19:57:20,900 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:57:20,901 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 5 letters. [2021-10-21 19:57:20,901 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:57:20,901 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 1 letters. Loop has 10 letters. [2021-10-21 19:57:20,902 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:57:20,903 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 22 transitions. [2021-10-21 19:57:20,905 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-21 19:57:20,906 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 12 states and 17 transitions. [2021-10-21 19:57:20,906 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2021-10-21 19:57:20,906 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2021-10-21 19:57:20,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2021-10-21 19:57:20,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:57:20,907 INFO L681 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2021-10-21 19:57:20,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2021-10-21 19:57:20,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2021-10-21 19:57:20,908 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) [2021-10-21 19:57:20,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 16 transitions. [2021-10-21 19:57:20,909 INFO L704 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2021-10-21 19:57:20,909 INFO L587 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2021-10-21 19:57:20,909 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-21 19:57:20,910 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 16 transitions. [2021-10-21 19:57:20,910 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-21 19:57:20,910 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:57:20,911 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:57:20,911 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-21 19:57:20,911 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-21 19:57:20,911 INFO L791 eck$LassoCheckResult]: Stem: 101#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4;f_#in~k, f_#in~l := main_#t~nondet2, main_#t~nondet3;havoc f_#res;havoc f_#t~post0, f_#t~post1, f_~k, f_~l, f_~i~0, f_~j~0;f_~k := f_#in~k;f_~l := f_#in~l;f_~i~0 := 0;f_~j~0 := 0; 102#L18 goto; 92#L9 [2021-10-21 19:57:20,912 INFO L793 eck$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 [2021-10-21 19:57:20,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:57:20,912 INFO L82 PathProgramCache]: Analyzing trace with hash 997, now seen corresponding path program 1 times [2021-10-21 19:57:20,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:57:20,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919637398] [2021-10-21 19:57:20,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:57:20,913 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:57:20,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:57:20,918 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:57:20,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:57:20,924 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:57:20,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:57:20,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2021-10-21 19:57:20,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:57:20,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753482707] [2021-10-21 19:57:20,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:57:20,926 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:57:20,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:57:20,937 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:57:20,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:57:20,945 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:57:20,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:57:20,946 INFO L82 PathProgramCache]: Analyzing trace with hash 958440, now seen corresponding path program 1 times [2021-10-21 19:57:20,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:57:20,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858211367] [2021-10-21 19:57:20,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:57:20,949 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:57:20,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:57:20,957 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:57:20,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:57:20,980 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:57:21,026 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:57:21,026 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:57:21,026 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:57:21,027 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:57:21,027 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 19:57:21,027 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:57:21,028 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:57:21,028 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:57:21,028 INFO L133 ssoRankerPreferences]: Filename of dumped script: twisted.c_Iteration3_Loop [2021-10-21 19:57:21,028 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:57:21,028 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:57:21,031 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:57:21,035 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:57:21,147 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:57:21,147 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 19:57:21,148 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:57:21,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e23bfb-8b58-4648-85e0-17982a64ed51/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:57:21,149 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e23bfb-8b58-4648-85e0-17982a64ed51/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:57:21,152 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:57:21,152 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:57:21,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e23bfb-8b58-4648-85e0-17982a64ed51/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-21 19:57:21,180 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:57:21,180 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: [] [2021-10-21 19:57:21,222 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e23bfb-8b58-4648-85e0-17982a64ed51/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2021-10-21 19:57:21,223 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:57:21,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e23bfb-8b58-4648-85e0-17982a64ed51/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:57:21,247 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e23bfb-8b58-4648-85e0-17982a64ed51/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:57:21,256 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:57:21,256 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:57:21,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e23bfb-8b58-4648-85e0-17982a64ed51/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-21 19:57:21,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e23bfb-8b58-4648-85e0-17982a64ed51/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-21 19:57:21,335 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:57:21,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e23bfb-8b58-4648-85e0-17982a64ed51/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:57:21,337 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e23bfb-8b58-4648-85e0-17982a64ed51/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:57:21,343 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 19:57:21,344 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:57:21,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e23bfb-8b58-4648-85e0-17982a64ed51/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-21 19:57:21,613 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 19:57:21,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e23bfb-8b58-4648-85e0-17982a64ed51/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-21 19:57:21,621 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:57:21,621 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:57:21,621 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:57:21,621 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:57:21,621 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 19:57:21,621 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:57:21,621 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:57:21,622 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:57:21,622 INFO L133 ssoRankerPreferences]: Filename of dumped script: twisted.c_Iteration3_Loop [2021-10-21 19:57:21,622 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:57:21,622 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:57:21,623 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:57:21,636 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:57:21,717 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:57:21,717 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 19:57:21,717 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:57:21,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e23bfb-8b58-4648-85e0-17982a64ed51/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:57:21,718 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e23bfb-8b58-4648-85e0-17982a64ed51/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:57:21,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e23bfb-8b58-4648-85e0-17982a64ed51/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-21 19:57:21,732 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 [2021-10-21 19:57:21,742 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:57:21,742 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:57:21,742 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:57:21,742 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:57:21,742 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:57:21,745 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:57:21,745 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:57:21,757 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 19:57:21,762 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-10-21 19:57:21,763 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-21 19:57:21,763 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:57:21,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e23bfb-8b58-4648-85e0-17982a64ed51/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:57:21,765 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e23bfb-8b58-4648-85e0-17982a64ed51/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:57:21,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e23bfb-8b58-4648-85e0-17982a64ed51/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-21 19:57:21,767 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 19:57:21,777 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 19:57:21,777 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 19:57:21,777 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 [] [2021-10-21 19:57:21,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e23bfb-8b58-4648-85e0-17982a64ed51/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-21 19:57:21,819 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 19:57:21,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:57:21,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:57:21,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:57:21,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:57:21,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:57:21,858 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:57:21,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:57:21,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:57:21,906 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 [2021-10-21 19:57:21,907 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) [2021-10-21 19:57:21,941 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. [2021-10-21 19:57:21,942 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 [2021-10-21 19:57:21,942 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) [2021-10-21 19:57:21,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 13 transitions. [2021-10-21 19:57:21,943 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 2 letters. Loop has 2 letters. [2021-10-21 19:57:21,943 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:57:21,944 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 4 letters. Loop has 2 letters. [2021-10-21 19:57:21,944 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:57:21,944 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 2 letters. Loop has 4 letters. [2021-10-21 19:57:21,944 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:57:21,945 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 31 transitions. [2021-10-21 19:57:21,946 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-21 19:57:21,946 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 0 states and 0 transitions. [2021-10-21 19:57:21,947 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-21 19:57:21,947 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-21 19:57:21,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-21 19:57:21,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:57:21,947 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:57:21,947 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:57:21,947 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:57:21,947 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-21 19:57:21,948 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-21 19:57:21,948 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-21 19:57:21,948 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-21 19:57:21,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.10 07:57:21 BoogieIcfgContainer [2021-10-21 19:57:21,971 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-21 19:57:21,972 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:57:21,972 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:57:21,972 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:57:21,973 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:57:19" (3/4) ... [2021-10-21 19:57:21,976 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 19:57:21,976 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:57:21,978 INFO L168 Benchmark]: Toolchain (without parser) took 3495.92 ms. Allocated memory is still 104.9 MB. Free memory was 66.3 MB in the beginning and 45.3 MB in the end (delta: 21.0 MB). Peak memory consumption was 20.9 MB. Max. memory is 16.1 GB. [2021-10-21 19:57:21,979 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 104.9 MB. Free memory is still 82.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:57:21,979 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.35 ms. Allocated memory is still 104.9 MB. Free memory was 66.1 MB in the beginning and 83.0 MB in the end (delta: -16.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-21 19:57:21,980 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.08 ms. Allocated memory is still 104.9 MB. Free memory was 83.0 MB in the beginning and 81.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:57:21,981 INFO L168 Benchmark]: Boogie Preprocessor took 22.68 ms. Allocated memory is still 104.9 MB. Free memory was 81.6 MB in the beginning and 80.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:57:21,982 INFO L168 Benchmark]: RCFGBuilder took 304.28 ms. Allocated memory is still 104.9 MB. Free memory was 80.5 MB in the beginning and 71.5 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:57:21,982 INFO L168 Benchmark]: BuchiAutomizer took 2805.83 ms. Allocated memory is still 104.9 MB. Free memory was 71.1 MB in the beginning and 45.8 MB in the end (delta: 25.3 MB). Peak memory consumption was 27.6 MB. Max. memory is 16.1 GB. [2021-10-21 19:57:21,983 INFO L168 Benchmark]: Witness Printer took 4.51 ms. Allocated memory is still 104.9 MB. Free memory was 45.8 MB in the beginning and 45.3 MB in the end (delta: 585.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:57:21,987 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 104.9 MB. Free memory is still 82.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 310.35 ms. Allocated memory is still 104.9 MB. Free memory was 66.1 MB in the beginning and 83.0 MB in the end (delta: -16.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.08 ms. Allocated memory is still 104.9 MB. Free memory was 83.0 MB in the beginning and 81.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.68 ms. Allocated memory is still 104.9 MB. Free memory was 81.6 MB in the beginning and 80.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 304.28 ms. Allocated memory is still 104.9 MB. Free memory was 80.5 MB in the beginning and 71.5 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 2805.83 ms. Allocated memory is still 104.9 MB. Free memory was 71.1 MB in the beginning and 45.8 MB in the end (delta: 25.3 MB). Peak memory consumption was 27.6 MB. Max. memory is 16.1 GB. * Witness Printer took 4.51 ms. Allocated memory is still 104.9 MB. Free memory was 45.8 MB in the beginning and 45.3 MB in the end (delta: 585.3 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 2.6s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 2.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 1. Automata minimization 17.7ms 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, 18.4ms 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: 61ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-10-21 19:57:22,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e23bfb-8b58-4648-85e0-17982a64ed51/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-21 19:57:22,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e23bfb-8b58-4648-85e0-17982a64ed51/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-21 19:57:22,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90e23bfb-8b58-4648-85e0-17982a64ed51/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...