./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.20.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b45d4866-500d-48d9-8811-7aa1116ba34c/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b45d4866-500d-48d9-8811-7aa1116ba34c/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b45d4866-500d-48d9-8811-7aa1116ba34c/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b45d4866-500d-48d9-8811-7aa1116ba34c/bin/uautomizer-AkOaLMaTGY/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b45d4866-500d-48d9-8811-7aa1116ba34c/bin/uautomizer-AkOaLMaTGY/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b45d4866-500d-48d9-8811-7aa1116ba34c/bin/uautomizer-AkOaLMaTGY --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 47fb78ac9820c6d98917fe0cc73f6365b4f645d027bada4a39a82cb418e09c1c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 08:40:59,503 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 08:40:59,505 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 08:40:59,535 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 08:40:59,536 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 08:40:59,537 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 08:40:59,539 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 08:40:59,541 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 08:40:59,544 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 08:40:59,545 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 08:40:59,546 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 08:40:59,547 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 08:40:59,548 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 08:40:59,549 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 08:40:59,551 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 08:40:59,552 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 08:40:59,553 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 08:40:59,554 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 08:40:59,556 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 08:40:59,559 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 08:40:59,561 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 08:40:59,562 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 08:40:59,563 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 08:40:59,564 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 08:40:59,568 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 08:40:59,568 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 08:40:59,569 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 08:40:59,570 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 08:40:59,571 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 08:40:59,572 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 08:40:59,572 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 08:40:59,573 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 08:40:59,574 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 08:40:59,575 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 08:40:59,576 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 08:40:59,577 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 08:40:59,577 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 08:40:59,578 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 08:40:59,578 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 08:40:59,579 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 08:40:59,580 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 08:40:59,581 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b45d4866-500d-48d9-8811-7aa1116ba34c/bin/uautomizer-AkOaLMaTGY/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-11-07 08:40:59,608 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 08:40:59,609 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 08:40:59,609 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 08:40:59,609 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 08:40:59,610 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 08:40:59,611 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 08:40:59,611 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 08:40:59,611 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-07 08:40:59,611 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-07 08:40:59,612 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-07 08:40:59,612 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-07 08:40:59,612 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-07 08:40:59,612 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-07 08:40:59,613 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 08:40:59,613 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 08:40:59,613 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 08:40:59,613 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 08:40:59,614 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-07 08:40:59,614 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-07 08:40:59,614 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-07 08:40:59,614 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 08:40:59,614 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-07 08:40:59,615 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 08:40:59,615 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-07 08:40:59,615 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 08:40:59,615 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 08:40:59,616 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 08:40:59,616 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 08:40:59,616 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 08:40:59,617 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-07 08:40:59,617 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_b45d4866-500d-48d9-8811-7aa1116ba34c/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b45d4866-500d-48d9-8811-7aa1116ba34c/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47fb78ac9820c6d98917fe0cc73f6365b4f645d027bada4a39a82cb418e09c1c [2021-11-07 08:40:59,850 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 08:40:59,875 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 08:40:59,878 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 08:40:59,880 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 08:40:59,881 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 08:40:59,882 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b45d4866-500d-48d9-8811-7aa1116ba34c/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.20.c [2021-11-07 08:40:59,964 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b45d4866-500d-48d9-8811-7aa1116ba34c/bin/uautomizer-AkOaLMaTGY/data/6464d9ef4/32efda7eff5546fc939cb9eaee1cd392/FLAG83e601397 [2021-11-07 08:41:00,460 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 08:41:00,461 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b45d4866-500d-48d9-8811-7aa1116ba34c/sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.20.c [2021-11-07 08:41:00,472 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b45d4866-500d-48d9-8811-7aa1116ba34c/bin/uautomizer-AkOaLMaTGY/data/6464d9ef4/32efda7eff5546fc939cb9eaee1cd392/FLAG83e601397 [2021-11-07 08:41:00,828 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b45d4866-500d-48d9-8811-7aa1116ba34c/bin/uautomizer-AkOaLMaTGY/data/6464d9ef4/32efda7eff5546fc939cb9eaee1cd392 [2021-11-07 08:41:00,830 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 08:41:00,832 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 08:41:00,840 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 08:41:00,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 08:41:00,844 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 08:41:00,845 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:41:00" (1/1) ... [2021-11-07 08:41:00,848 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@670c8581 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:41:00, skipping insertion in model container [2021-11-07 08:41:00,848 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:41:00" (1/1) ... [2021-11-07 08:41:00,856 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 08:41:00,867 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 08:41:01,007 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:41:01,028 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 08:41:01,041 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:41:01,052 INFO L208 MainTranslator]: Completed translation [2021-11-07 08:41:01,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:41:01 WrapperNode [2021-11-07 08:41:01,053 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 08:41:01,054 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 08:41:01,054 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 08:41:01,054 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 08:41:01,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:41:01" (1/1) ... [2021-11-07 08:41:01,066 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:41:01" (1/1) ... [2021-11-07 08:41:01,087 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 08:41:01,089 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 08:41:01,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 08:41:01,089 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 08:41:01,104 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:41:01" (1/1) ... [2021-11-07 08:41:01,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:41:01" (1/1) ... [2021-11-07 08:41:01,106 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:41:01" (1/1) ... [2021-11-07 08:41:01,107 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:41:01" (1/1) ... [2021-11-07 08:41:01,108 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:41:01" (1/1) ... [2021-11-07 08:41:01,111 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:41:01" (1/1) ... [2021-11-07 08:41:01,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:41:01" (1/1) ... [2021-11-07 08:41:01,112 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 08:41:01,113 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 08:41:01,113 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 08:41:01,113 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 08:41:01,114 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:41:01" (1/1) ... [2021-11-07 08:41:01,120 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:41:01,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b45d4866-500d-48d9-8811-7aa1116ba34c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:41:01,157 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b45d4866-500d-48d9-8811-7aa1116ba34c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:41:01,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b45d4866-500d-48d9-8811-7aa1116ba34c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-07 08:41:01,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 08:41:01,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 08:41:01,347 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 08:41:01,348 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-07 08:41:01,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:41:01 BoogieIcfgContainer [2021-11-07 08:41:01,350 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 08:41:01,351 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-07 08:41:01,351 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-07 08:41:01,354 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-07 08:41:01,355 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-07 08:41:01,355 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.11 08:41:00" (1/3) ... [2021-11-07 08:41:01,356 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6bad8e8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.11 08:41:01, skipping insertion in model container [2021-11-07 08:41:01,356 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-07 08:41:01,357 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:41:01" (2/3) ... [2021-11-07 08:41:01,357 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6bad8e8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.11 08:41:01, skipping insertion in model container [2021-11-07 08:41:01,357 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-07 08:41:01,357 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:41:01" (3/3) ... [2021-11-07 08:41:01,359 INFO L389 chiAutomizerObserver]: Analyzing ICFG ChenFlurMukhopadhyay-SAS2012-Ex2.20.c [2021-11-07 08:41:01,402 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-07 08:41:01,403 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-07 08:41:01,403 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-07 08:41:01,403 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-07 08:41:01,403 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-07 08:41:01,403 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-07 08:41:01,404 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-07 08:41:01,404 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-07 08:41:01,416 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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) [2021-11-07 08:41:01,428 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-11-07 08:41:01,429 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-07 08:41:01,429 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-07 08:41:01,434 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-11-07 08:41:01,434 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-11-07 08:41:01,434 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-07 08:41:01,435 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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) [2021-11-07 08:41:01,435 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-11-07 08:41:01,436 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-07 08:41:01,436 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-07 08:41:01,436 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-11-07 08:41:01,436 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-11-07 08:41:01,442 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 6#L26-2true [2021-11-07 08:41:01,443 INFO L793 eck$LassoCheckResult]: Loop: 6#L26-2true assume !!((main_~x~0 > main_~y~0 && main_~y~0 >= 1) && main_~y~0 <= 2);main_~x~0 := main_~x~0 - main_~y~0;main_~y~0 := main_#t~nondet2;havoc main_#t~nondet2; 6#L26-2true [2021-11-07 08:41:01,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:41:01,449 INFO L85 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-11-07 08:41:01,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:41:01,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291817635] [2021-11-07 08:41:01,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:41:01,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:41:01,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:41:01,516 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:41:01,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:41:01,533 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:41:01,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:41:01,536 INFO L85 PathProgramCache]: Analyzing trace with hash 41, now seen corresponding path program 1 times [2021-11-07 08:41:01,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:41:01,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083873336] [2021-11-07 08:41:01,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:41:01,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:41:01,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:41:01,549 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:41:01,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:41:01,556 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:41:01,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:41:01,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2021-11-07 08:41:01,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:41:01,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726834113] [2021-11-07 08:41:01,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:41:01,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:41:01,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:41:01,567 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:41:01,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:41:01,575 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:41:01,658 INFO L210 LassoAnalysis]: Preferences: [2021-11-07 08:41:01,659 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-07 08:41:01,659 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-07 08:41:01,659 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-07 08:41:01,660 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-07 08:41:01,660 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:41:01,660 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-07 08:41:01,660 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-07 08:41:01,660 INFO L133 ssoRankerPreferences]: Filename of dumped script: ChenFlurMukhopadhyay-SAS2012-Ex2.20.c_Iteration1_Loop [2021-11-07 08:41:01,661 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-07 08:41:01,661 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-07 08:41:01,678 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:41:01,697 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:41:01,701 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:41:01,774 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-07 08:41:01,774 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-07 08:41:01,776 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:41:01,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b45d4866-500d-48d9-8811-7aa1116ba34c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:41:01,789 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b45d4866-500d-48d9-8811-7aa1116ba34c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:41:01,830 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-07 08:41:01,830 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 08:41:01,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b45d4866-500d-48d9-8811-7aa1116ba34c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-11-07 08:41:01,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b45d4866-500d-48d9-8811-7aa1116ba34c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-11-07 08:41:01,895 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:41:01,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b45d4866-500d-48d9-8811-7aa1116ba34c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:41:01,897 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b45d4866-500d-48d9-8811-7aa1116ba34c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:41:01,903 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-07 08:41:01,903 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 08:41:01,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b45d4866-500d-48d9-8811-7aa1116ba34c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-11-07 08:41:01,988 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-07 08:41:01,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b45d4866-500d-48d9-8811-7aa1116ba34c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-11-07 08:41:01,995 INFO L210 LassoAnalysis]: Preferences: [2021-11-07 08:41:01,995 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-07 08:41:01,995 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-07 08:41:01,996 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-07 08:41:01,996 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-07 08:41:01,996 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:41:01,996 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-07 08:41:01,996 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-07 08:41:01,996 INFO L133 ssoRankerPreferences]: Filename of dumped script: ChenFlurMukhopadhyay-SAS2012-Ex2.20.c_Iteration1_Loop [2021-11-07 08:41:01,996 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-07 08:41:01,997 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-07 08:41:01,999 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:41:02,020 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:41:02,025 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:41:02,100 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-07 08:41:02,104 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-07 08:41:02,120 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:41:02,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b45d4866-500d-48d9-8811-7aa1116ba34c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:41:02,121 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b45d4866-500d-48d9-8811-7aa1116ba34c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:41:02,127 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 [2021-11-07 08:41:02,137 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 08:41:02,137 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-07 08:41:02,138 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 08:41:02,138 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 08:41:02,138 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-07 08:41:02,142 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-07 08:41:02,142 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-07 08:41:02,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b45d4866-500d-48d9-8811-7aa1116ba34c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-11-07 08:41:02,150 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-07 08:41:02,164 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-07 08:41:02,164 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-07 08:41:02,165 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:41:02,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b45d4866-500d-48d9-8811-7aa1116ba34c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:41:02,167 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b45d4866-500d-48d9-8811-7aa1116ba34c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:41:02,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b45d4866-500d-48d9-8811-7aa1116ba34c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-11-07 08:41:02,172 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-07 08:41:02,173 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-07 08:41:02,173 INFO L513 LassoAnalysis]: Proved termination. [2021-11-07 08:41:02,173 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2021-11-07 08:41:02,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b45d4866-500d-48d9-8811-7aa1116ba34c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-11-07 08:41:02,209 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-07 08:41:02,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:41:02,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:41:02,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 08:41:02,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:41:02,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:41:02,266 WARN L261 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 08:41:02,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:41:02,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:41:02,285 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-11-07 08:41:02,286 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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) Second operand has 2 states, 2 states have (on average 1.0) internal successors, (2), 1 states have internal predecessors, (2), 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) [2021-11-07 08:41:02,323 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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). Second operand has 2 states, 2 states have (on average 1.0) internal successors, (2), 1 states have internal predecessors, (2), 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 18 transitions. Complement of second has 5 states. [2021-11-07 08:41:02,325 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 [2021-11-07 08:41:02,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 1.0) internal successors, (2), 1 states have internal predecessors, (2), 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) [2021-11-07 08:41:02,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2021-11-07 08:41:02,330 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 1 letters. Loop has 1 letters. [2021-11-07 08:41:02,330 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 08:41:02,330 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 1 letters. [2021-11-07 08:41:02,331 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 08:41:02,331 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 1 letters. Loop has 2 letters. [2021-11-07 08:41:02,331 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 08:41:02,332 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 18 transitions. [2021-11-07 08:41:02,336 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-07 08:41:02,339 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 0 states and 0 transitions. [2021-11-07 08:41:02,340 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-11-07 08:41:02,340 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-11-07 08:41:02,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-11-07 08:41:02,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:41:02,341 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 08:41:02,341 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 08:41:02,341 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 08:41:02,341 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-07 08:41:02,341 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-11-07 08:41:02,341 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-07 08:41:02,341 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-11-07 08:41:02,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.11 08:41:02 BoogieIcfgContainer [2021-11-07 08:41:02,347 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-07 08:41:02,349 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 08:41:02,349 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 08:41:02,349 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 08:41:02,350 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:41:01" (3/4) ... [2021-11-07 08:41:02,353 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-07 08:41:02,353 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 08:41:02,356 INFO L168 Benchmark]: Toolchain (without parser) took 1521.66 ms. Allocated memory is still 113.2 MB. Free memory was 77.3 MB in the beginning and 42.6 MB in the end (delta: 34.8 MB). Peak memory consumption was 32.6 MB. Max. memory is 16.1 GB. [2021-11-07 08:41:02,359 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 113.2 MB. Free memory was 84.4 MB in the beginning and 84.3 MB in the end (delta: 25.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 08:41:02,359 INFO L168 Benchmark]: CACSL2BoogieTranslator took 212.86 ms. Allocated memory is still 113.2 MB. Free memory was 77.0 MB in the beginning and 88.7 MB in the end (delta: -11.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 08:41:02,360 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.80 ms. Allocated memory is still 113.2 MB. Free memory was 88.7 MB in the beginning and 87.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 08:41:02,362 INFO L168 Benchmark]: Boogie Preprocessor took 23.89 ms. Allocated memory is still 113.2 MB. Free memory was 87.4 MB in the beginning and 86.6 MB in the end (delta: 810.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 08:41:02,362 INFO L168 Benchmark]: RCFGBuilder took 236.98 ms. Allocated memory is still 113.2 MB. Free memory was 86.6 MB in the beginning and 79.0 MB in the end (delta: 7.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-07 08:41:02,364 INFO L168 Benchmark]: BuchiAutomizer took 996.48 ms. Allocated memory is still 113.2 MB. Free memory was 79.0 MB in the beginning and 43.4 MB in the end (delta: 35.6 MB). Peak memory consumption was 35.7 MB. Max. memory is 16.1 GB. [2021-11-07 08:41:02,370 INFO L168 Benchmark]: Witness Printer took 3.94 ms. Allocated memory is still 113.2 MB. Free memory was 43.2 MB in the beginning and 42.6 MB in the end (delta: 644.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 08:41:02,377 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 113.2 MB. Free memory was 84.4 MB in the beginning and 84.3 MB in the end (delta: 25.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 212.86 ms. Allocated memory is still 113.2 MB. Free memory was 77.0 MB in the beginning and 88.7 MB in the end (delta: -11.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.80 ms. Allocated memory is still 113.2 MB. Free memory was 88.7 MB in the beginning and 87.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.89 ms. Allocated memory is still 113.2 MB. Free memory was 87.4 MB in the beginning and 86.6 MB in the end (delta: 810.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 236.98 ms. Allocated memory is still 113.2 MB. Free memory was 86.6 MB in the beginning and 79.0 MB in the end (delta: 7.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 996.48 ms. Allocated memory is still 113.2 MB. Free memory was 79.0 MB in the beginning and 43.4 MB in the end (delta: 35.6 MB). Peak memory consumption was 35.7 MB. Max. memory is 16.1 GB. * Witness Printer took 3.94 ms. Allocated memory is still 113.2 MB. Free memory was 43.2 MB in the beginning and 42.6 MB in the end (delta: 644.9 kB). Peak memory consumption was 2.1 MB. 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 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function x and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.9s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.7s. 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: 4 SDtfs, 4 SDslu, 3 SDs, 0 SdLazy, 3 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax163 hnf100 lsp61 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq152 hnf93 smp100 dnf100 smp100 tf107 neg100 sie106 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 53ms VariablesStem: 0 VariablesLoop: 5 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-11-07 08:41:02,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b45d4866-500d-48d9-8811-7aa1116ba34c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-11-07 08:41:02,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b45d4866-500d-48d9-8811-7aa1116ba34c/bin/uautomizer-AkOaLMaTGY/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