./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/cstrlen.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c663b9a7-e71f-4e4b-af64-50a020a2d0d5/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c663b9a7-e71f-4e4b-af64-50a020a2d0d5/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c663b9a7-e71f-4e4b-af64-50a020a2d0d5/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c663b9a7-e71f-4e4b-af64-50a020a2d0d5/bin/uautomizer-DQz5hQGWxF/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/cstrlen.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c663b9a7-e71f-4e4b-af64-50a020a2d0d5/bin/uautomizer-DQz5hQGWxF/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c663b9a7-e71f-4e4b-af64-50a020a2d0d5/bin/uautomizer-DQz5hQGWxF --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 7f47a3aedd406a69ab1753c1c4707697df0dbc0cdff682f67fd1c090787641f6 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:03:21,679 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:03:21,681 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:03:21,716 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:03:21,717 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:03:21,718 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:03:21,720 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:03:21,722 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:03:21,725 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:03:21,726 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:03:21,727 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:03:21,728 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:03:21,729 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:03:21,730 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:03:21,732 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:03:21,733 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:03:21,734 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:03:21,735 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:03:21,737 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:03:21,739 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:03:21,741 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:03:21,745 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:03:21,746 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:03:21,747 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:03:21,750 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:03:21,751 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:03:21,751 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:03:21,752 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:03:21,753 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:03:21,754 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:03:21,754 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:03:21,755 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:03:21,756 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:03:21,757 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:03:21,764 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:03:21,765 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:03:21,766 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:03:21,766 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:03:21,766 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:03:21,767 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:03:21,768 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:03:21,769 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c663b9a7-e71f-4e4b-af64-50a020a2d0d5/bin/uautomizer-DQz5hQGWxF/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-11-20 07:03:21,824 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:03:21,824 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:03:21,824 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:03:21,824 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:03:21,825 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:03:21,825 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:03:21,826 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:03:21,826 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-20 07:03:21,826 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-20 07:03:21,826 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-20 07:03:21,826 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-20 07:03:21,827 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-20 07:03:21,827 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-20 07:03:21,827 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:03:21,827 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 07:03:21,827 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 07:03:21,828 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:03:21,828 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-20 07:03:21,828 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-20 07:03:21,828 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-20 07:03:21,828 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 07:03:21,828 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-20 07:03:21,829 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:03:21,829 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-20 07:03:21,829 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:03:21,829 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:03:21,829 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:03:21,830 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 07:03:21,838 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:03:21,839 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-20 07:03:21,839 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_c663b9a7-e71f-4e4b-af64-50a020a2d0d5/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c663b9a7-e71f-4e4b-af64-50a020a2d0d5/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f47a3aedd406a69ab1753c1c4707697df0dbc0cdff682f67fd1c090787641f6 [2021-11-20 07:03:22,086 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:03:22,116 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:03:22,119 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:03:22,121 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:03:22,122 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:03:22,123 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c663b9a7-e71f-4e4b-af64-50a020a2d0d5/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/termination-crafted-lit/cstrlen.c [2021-11-20 07:03:22,206 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c663b9a7-e71f-4e4b-af64-50a020a2d0d5/bin/uautomizer-DQz5hQGWxF/data/861fff2da/acc166a2b0704f099282de0a03823627/FLAG25c24be0c [2021-11-20 07:03:22,625 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:03:22,626 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c663b9a7-e71f-4e4b-af64-50a020a2d0d5/sv-benchmarks/c/termination-crafted-lit/cstrlen.c [2021-11-20 07:03:22,632 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c663b9a7-e71f-4e4b-af64-50a020a2d0d5/bin/uautomizer-DQz5hQGWxF/data/861fff2da/acc166a2b0704f099282de0a03823627/FLAG25c24be0c [2021-11-20 07:03:23,021 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c663b9a7-e71f-4e4b-af64-50a020a2d0d5/bin/uautomizer-DQz5hQGWxF/data/861fff2da/acc166a2b0704f099282de0a03823627 [2021-11-20 07:03:23,023 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:03:23,025 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:03:23,027 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:03:23,027 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:03:23,031 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:03:23,032 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:03:23" (1/1) ... [2021-11-20 07:03:23,035 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@310bd733 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:03:23, skipping insertion in model container [2021-11-20 07:03:23,035 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:03:23" (1/1) ... [2021-11-20 07:03:23,043 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:03:23,060 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:03:23,245 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:03:23,254 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 07:03:23,268 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:03:23,281 INFO L208 MainTranslator]: Completed translation [2021-11-20 07:03:23,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:03:23 WrapperNode [2021-11-20 07:03:23,282 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:03:23,282 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 07:03:23,283 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 07:03:23,283 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 07:03:23,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:03:23" (1/1) ... [2021-11-20 07:03:23,298 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:03:23" (1/1) ... [2021-11-20 07:03:23,317 INFO L137 Inliner]: procedures = 11, calls = 7, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 36 [2021-11-20 07:03:23,318 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 07:03:23,319 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 07:03:23,319 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 07:03:23,319 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 07:03:23,328 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:03:23" (1/1) ... [2021-11-20 07:03:23,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:03:23" (1/1) ... [2021-11-20 07:03:23,330 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:03:23" (1/1) ... [2021-11-20 07:03:23,330 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:03:23" (1/1) ... [2021-11-20 07:03:23,337 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:03:23" (1/1) ... [2021-11-20 07:03:23,340 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:03:23" (1/1) ... [2021-11-20 07:03:23,342 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:03:23" (1/1) ... [2021-11-20 07:03:23,344 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 07:03:23,345 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 07:03:23,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 07:03:23,345 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 07:03:23,346 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:03:23" (1/1) ... [2021-11-20 07:03:23,353 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:03:23,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c663b9a7-e71f-4e4b-af64-50a020a2d0d5/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:03:23,384 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c663b9a7-e71f-4e4b-af64-50a020a2d0d5/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:03:23,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c663b9a7-e71f-4e4b-af64-50a020a2d0d5/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-20 07:03:23,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 07:03:23,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 07:03:23,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 07:03:23,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 07:03:23,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 07:03:23,491 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 07:03:23,493 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 07:03:23,605 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 07:03:23,611 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 07:03:23,611 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-20 07:03:23,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:03:23 BoogieIcfgContainer [2021-11-20 07:03:23,613 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 07:03:23,614 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-20 07:03:23,614 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-20 07:03:23,617 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-20 07:03:23,618 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 07:03:23,618 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 07:03:23" (1/3) ... [2021-11-20 07:03:23,620 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5ece86a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 07:03:23, skipping insertion in model container [2021-11-20 07:03:23,620 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 07:03:23,620 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:03:23" (2/3) ... [2021-11-20 07:03:23,621 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5ece86a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 07:03:23, skipping insertion in model container [2021-11-20 07:03:23,621 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 07:03:23,621 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:03:23" (3/3) ... [2021-11-20 07:03:23,622 INFO L388 chiAutomizerObserver]: Analyzing ICFG cstrlen.c [2021-11-20 07:03:23,669 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-20 07:03:23,669 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-20 07:03:23,669 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-20 07:03:23,670 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-20 07:03:23,670 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-20 07:03:23,670 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-20 07:03:23,670 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-20 07:03:23,670 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-20 07:03:23,685 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:03:23,704 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-20 07:03:23,704 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 07:03:23,704 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 07:03:23,711 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-11-20 07:03:23,711 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-20 07:03:23,711 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-20 07:03:23,711 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:03:23,713 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-20 07:03:23,713 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 07:03:23,713 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 07:03:23,714 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-11-20 07:03:23,714 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-20 07:03:23,721 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 6#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret4#1.base, main_#t~ret4#1.offset, main_#t~ret5#1;assume { :begin_inline_build_nondet_String } true;havoc build_nondet_String_#res#1.base, build_nondet_String_#res#1.offset;havoc build_nondet_String_#t~nondet0#1, build_nondet_String_#t~malloc1#1.base, build_nondet_String_#t~malloc1#1.offset, build_nondet_String_~length~0#1, build_nondet_String_~nondetString~0#1.base, build_nondet_String_~nondetString~0#1.offset;build_nondet_String_~length~0#1 := build_nondet_String_#t~nondet0#1;havoc build_nondet_String_#t~nondet0#1; 10#L14true assume !(build_nondet_String_~length~0#1 < 1); 11#L14-2true call build_nondet_String_#t~malloc1#1.base, build_nondet_String_#t~malloc1#1.offset := #Ultimate.allocOnHeap(build_nondet_String_~length~0#1);build_nondet_String_~nondetString~0#1.base, build_nondet_String_~nondetString~0#1.offset := build_nondet_String_#t~malloc1#1.base, build_nondet_String_#t~malloc1#1.offset;havoc build_nondet_String_#t~malloc1#1.base, build_nondet_String_#t~malloc1#1.offset;call write~int(0, build_nondet_String_~nondetString~0#1.base, build_nondet_String_~nondetString~0#1.offset + (build_nondet_String_~length~0#1 - 1), 1);build_nondet_String_#res#1.base, build_nondet_String_#res#1.offset := build_nondet_String_~nondetString~0#1.base, build_nondet_String_~nondetString~0#1.offset; 7#L19true main_#t~ret4#1.base, main_#t~ret4#1.offset := build_nondet_String_#res#1.base, build_nondet_String_#res#1.offset;assume { :end_inline_build_nondet_String } true;assume { :begin_inline_cstrlen } true;cstrlen_#in~s#1.base, cstrlen_#in~s#1.offset := main_#t~ret4#1.base, main_#t~ret4#1.offset;havoc cstrlen_#res#1;havoc cstrlen_#t~post3#1.base, cstrlen_#t~post3#1.offset, cstrlen_#t~mem2#1, cstrlen_~s#1.base, cstrlen_~s#1.offset, cstrlen_~p~0#1.base, cstrlen_~p~0#1.offset;cstrlen_~s#1.base, cstrlen_~s#1.offset := cstrlen_#in~s#1.base, cstrlen_#in~s#1.offset;cstrlen_~p~0#1.base, cstrlen_~p~0#1.offset := cstrlen_~s#1.base, cstrlen_~s#1.offset; 12#L30-3true [2021-11-20 07:03:23,721 INFO L793 eck$LassoCheckResult]: Loop: 12#L30-3true call cstrlen_#t~mem2#1 := read~int(cstrlen_~p~0#1.base, cstrlen_~p~0#1.offset, 1); 3#L30-1true assume !!(0 != cstrlen_#t~mem2#1);havoc cstrlen_#t~mem2#1;cstrlen_#t~post3#1.base, cstrlen_#t~post3#1.offset := cstrlen_~p~0#1.base, cstrlen_~p~0#1.offset;cstrlen_~p~0#1.base, cstrlen_~p~0#1.offset := cstrlen_#t~post3#1.base, 1 + cstrlen_#t~post3#1.offset;havoc cstrlen_#t~post3#1.base, cstrlen_#t~post3#1.offset; 12#L30-3true [2021-11-20 07:03:23,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:03:23,744 INFO L85 PathProgramCache]: Analyzing trace with hash 28695750, now seen corresponding path program 1 times [2021-11-20 07:03:23,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:03:23,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789613129] [2021-11-20 07:03:23,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:03:23,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:03:23,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:03:23,885 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:03:23,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:03:23,922 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:03:23,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:03:23,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1478, now seen corresponding path program 1 times [2021-11-20 07:03:23,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:03:23,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804314736] [2021-11-20 07:03:23,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:03:23,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:03:23,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:03:23,933 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:03:23,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:03:23,942 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:03:23,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:03:23,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1806812491, now seen corresponding path program 1 times [2021-11-20 07:03:23,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:03:23,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809615484] [2021-11-20 07:03:23,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:03:23,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:03:23,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:03:23,973 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:03:23,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:03:24,002 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:03:24,448 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 07:03:24,449 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 07:03:24,449 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 07:03:24,449 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 07:03:24,450 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-20 07:03:24,450 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:03:24,450 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 07:03:24,450 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 07:03:24,450 INFO L133 ssoRankerPreferences]: Filename of dumped script: cstrlen.c_Iteration1_Lasso [2021-11-20 07:03:24,450 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 07:03:24,451 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 07:03:24,472 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:03:24,682 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:03:24,685 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:03:24,687 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:03:24,691 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:03:24,693 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:03:24,696 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:03:24,699 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:03:24,702 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:03:24,705 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:03:24,708 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:03:24,710 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:03:25,102 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 07:03:25,111 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-20 07:03:25,112 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:03:25,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c663b9a7-e71f-4e4b-af64-50a020a2d0d5/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:03:25,118 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c663b9a7-e71f-4e4b-af64-50a020a2d0d5/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:03:25,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c663b9a7-e71f-4e4b-af64-50a020a2d0d5/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-11-20 07:03:25,134 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 [2021-11-20 07:03:25,145 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 07:03:25,145 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 07:03:25,145 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 07:03:25,145 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 07:03:25,152 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 07:03:25,153 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 07:03:25,170 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 07:03:25,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c663b9a7-e71f-4e4b-af64-50a020a2d0d5/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-11-20 07:03:25,211 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:03:25,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c663b9a7-e71f-4e4b-af64-50a020a2d0d5/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:03:25,214 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c663b9a7-e71f-4e4b-af64-50a020a2d0d5/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:03:25,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c663b9a7-e71f-4e4b-af64-50a020a2d0d5/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-11-20 07:03:25,226 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 [2021-11-20 07:03:25,236 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 07:03:25,237 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 07:03:25,237 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 07:03:25,237 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 07:03:25,264 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 07:03:25,264 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 07:03:25,307 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-20 07:03:25,332 INFO L443 ModelExtractionUtils]: Simplification made 8 calls to the SMT solver. [2021-11-20 07:03:25,332 INFO L444 ModelExtractionUtils]: 21 out of 31 variables were initially zero. Simplification set additionally 7 variables to zero. [2021-11-20 07:03:25,334 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:03:25,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c663b9a7-e71f-4e4b-af64-50a020a2d0d5/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:03:25,335 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c663b9a7-e71f-4e4b-af64-50a020a2d0d5/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:03:25,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c663b9a7-e71f-4e4b-af64-50a020a2d0d5/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-11-20 07:03:25,383 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-20 07:03:25,423 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-11-20 07:03:25,423 INFO L513 LassoAnalysis]: Proved termination. [2021-11-20 07:03:25,424 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_cstrlen_~p~0#1.offset, v_rep(select #length ULTIMATE.start_cstrlen_~p~0#1.base)_1) = -1*ULTIMATE.start_cstrlen_~p~0#1.offset + 1*v_rep(select #length ULTIMATE.start_cstrlen_~p~0#1.base)_1 Supporting invariants [] [2021-11-20 07:03:25,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c663b9a7-e71f-4e4b-af64-50a020a2d0d5/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-11-20 07:03:25,469 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2021-11-20 07:03:25,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:03:25,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:03:25,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 07:03:25,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:03:25,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:03:25,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 07:03:25,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:03:25,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:03:25,618 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 [2021-11-20 07:03:25,619 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:03:25,659 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 24 states and 27 transitions. Complement of second has 5 states. [2021-11-20 07:03:25,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-11-20 07:03:25,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:03:25,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2021-11-20 07:03:25,679 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 5 letters. Loop has 2 letters. [2021-11-20 07:03:25,680 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:03:25,681 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 7 letters. Loop has 2 letters. [2021-11-20 07:03:25,682 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:03:25,682 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 5 letters. Loop has 4 letters. [2021-11-20 07:03:25,683 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:03:25,683 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 27 transitions. [2021-11-20 07:03:25,690 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-20 07:03:25,693 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 0 states and 0 transitions. [2021-11-20 07:03:25,694 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-11-20 07:03:25,694 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-11-20 07:03:25,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-11-20 07:03:25,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:03:25,696 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 07:03:25,696 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 07:03:25,696 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 07:03:25,696 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-20 07:03:25,697 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-11-20 07:03:25,697 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-20 07:03:25,697 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-11-20 07:03:25,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 07:03:25 BoogieIcfgContainer [2021-11-20 07:03:25,706 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-20 07:03:25,712 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 07:03:25,712 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 07:03:25,712 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 07:03:25,713 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:03:23" (3/4) ... [2021-11-20 07:03:25,716 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 07:03:25,716 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 07:03:25,717 INFO L158 Benchmark]: Toolchain (without parser) took 2691.75ms. Allocated memory is still 115.3MB. Free memory was 80.7MB in the beginning and 43.4MB in the end (delta: 37.3MB). Peak memory consumption was 37.8MB. Max. memory is 16.1GB. [2021-11-20 07:03:25,718 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 115.3MB. Free memory was 87.9MB in the beginning and 87.9MB in the end (delta: 21.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:03:25,720 INFO L158 Benchmark]: CACSL2BoogieTranslator took 255.07ms. Allocated memory is still 115.3MB. Free memory was 80.7MB in the beginning and 91.0MB in the end (delta: -10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 07:03:25,723 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.74ms. Allocated memory is still 115.3MB. Free memory was 91.0MB in the beginning and 89.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 07:03:25,724 INFO L158 Benchmark]: Boogie Preprocessor took 25.17ms. Allocated memory is still 115.3MB. Free memory was 89.5MB in the beginning and 88.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 07:03:25,730 INFO L158 Benchmark]: RCFGBuilder took 268.41ms. Allocated memory is still 115.3MB. Free memory was 88.1MB in the beginning and 78.4MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 07:03:25,730 INFO L158 Benchmark]: BuchiAutomizer took 2092.48ms. Allocated memory is still 115.3MB. Free memory was 78.4MB in the beginning and 43.4MB in the end (delta: 35.0MB). Peak memory consumption was 38.4MB. Max. memory is 16.1GB. [2021-11-20 07:03:25,731 INFO L158 Benchmark]: Witness Printer took 4.66ms. Allocated memory is still 115.3MB. Free memory is still 43.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:03:25,733 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 115.3MB. Free memory was 87.9MB in the beginning and 87.9MB in the end (delta: 21.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 255.07ms. Allocated memory is still 115.3MB. Free memory was 80.7MB in the beginning and 91.0MB in the end (delta: -10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.74ms. Allocated memory is still 115.3MB. Free memory was 91.0MB in the beginning and 89.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.17ms. Allocated memory is still 115.3MB. Free memory was 89.5MB in the beginning and 88.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 268.41ms. Allocated memory is still 115.3MB. Free memory was 88.1MB in the beginning and 78.4MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 2092.48ms. Allocated memory is still 115.3MB. Free memory was 78.4MB in the beginning and 43.4MB in the end (delta: 35.0MB). Peak memory consumption was 38.4MB. Max. memory is 16.1GB. * Witness Printer took 4.66ms. Allocated memory is still 115.3MB. Free memory is still 43.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function unknown-#length-unknown[p] + -1 * p and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.0s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 1.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 0 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16 mSDsluCounter, 14 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5 IncrementalHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 10 mSDtfsCounter, 5 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital123 mio100 ax100 hnf100 lsp95 ukn93 mio100 lsp45 div100 bol100 ite100 ukn100 eq191 hnf88 smp100 dnf112 smp93 tf100 neg97 sie109 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 58ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-11-20 07:03:25,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c663b9a7-e71f-4e4b-af64-50a020a2d0d5/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-11-20 07:03:25,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c663b9a7-e71f-4e4b-af64-50a020a2d0d5/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE