./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/Division-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d580cd01-79bb-4029-9786-634237bba67f/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d580cd01-79bb-4029-9786-634237bba67f/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d580cd01-79bb-4029-9786-634237bba67f/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d580cd01-79bb-4029-9786-634237bba67f/bin/uautomizer-tPACEb0tL8/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/Division-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d580cd01-79bb-4029-9786-634237bba67f/bin/uautomizer-tPACEb0tL8/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d580cd01-79bb-4029-9786-634237bba67f/bin/uautomizer-tPACEb0tL8 --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 bcd985be4d5b056143625ede780ed1bdcfd1a69390fda6644aa25539fa51e5a7 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:56:23,670 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:56:23,673 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:56:23,717 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:56:23,719 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:56:23,724 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:56:23,726 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:56:23,730 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:56:23,732 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:56:23,735 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:56:23,737 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:56:23,740 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:56:23,741 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:56:23,746 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:56:23,748 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:56:23,749 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:56:23,751 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:56:23,753 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:56:23,755 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:56:23,760 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:56:23,764 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:56:23,767 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:56:23,769 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:56:23,771 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:56:23,777 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:56:23,782 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:56:23,782 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:56:23,783 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:56:23,784 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:56:23,785 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:56:23,786 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:56:23,787 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:56:23,788 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:56:23,790 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:56:23,792 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:56:23,793 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:56:23,794 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:56:23,795 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:56:23,795 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:56:23,796 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:56:23,797 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:56:23,797 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d580cd01-79bb-4029-9786-634237bba67f/bin/uautomizer-tPACEb0tL8/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-11-16 11:56:23,834 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:56:23,834 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:56:23,835 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:56:23,835 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:56:23,837 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:56:23,837 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:56:23,838 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:56:23,838 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-16 11:56:23,838 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-16 11:56:23,838 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-16 11:56:23,839 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-16 11:56:23,840 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-16 11:56:23,840 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-16 11:56:23,840 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:56:23,840 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:56:23,841 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:56:23,841 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:56:23,841 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-16 11:56:23,841 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-16 11:56:23,841 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-16 11:56:23,842 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:56:23,842 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-16 11:56:23,842 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:56:23,844 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-16 11:56:23,844 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:56:23,844 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:56:23,844 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:56:23,845 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:56:23,846 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-16 11:56:23,846 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_d580cd01-79bb-4029-9786-634237bba67f/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d580cd01-79bb-4029-9786-634237bba67f/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bcd985be4d5b056143625ede780ed1bdcfd1a69390fda6644aa25539fa51e5a7 [2022-11-16 11:56:24,165 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:56:24,201 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:56:24,206 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:56:24,208 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:56:24,209 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:56:24,210 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d580cd01-79bb-4029-9786-634237bba67f/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/termination-crafted/Division-2.c [2022-11-16 11:56:24,301 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d580cd01-79bb-4029-9786-634237bba67f/bin/uautomizer-tPACEb0tL8/data/c6b9cf317/21d7017e94bf4252b000e7cb4c775daf/FLAGce63b158e [2022-11-16 11:56:24,744 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:56:24,745 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d580cd01-79bb-4029-9786-634237bba67f/sv-benchmarks/c/termination-crafted/Division-2.c [2022-11-16 11:56:24,751 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d580cd01-79bb-4029-9786-634237bba67f/bin/uautomizer-tPACEb0tL8/data/c6b9cf317/21d7017e94bf4252b000e7cb4c775daf/FLAGce63b158e [2022-11-16 11:56:25,139 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d580cd01-79bb-4029-9786-634237bba67f/bin/uautomizer-tPACEb0tL8/data/c6b9cf317/21d7017e94bf4252b000e7cb4c775daf [2022-11-16 11:56:25,144 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:56:25,147 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:56:25,154 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:56:25,154 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:56:25,158 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:56:25,159 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:56:25" (1/1) ... [2022-11-16 11:56:25,161 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b44d156 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:25, skipping insertion in model container [2022-11-16 11:56:25,161 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:56:25" (1/1) ... [2022-11-16 11:56:25,169 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:56:25,182 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:56:25,433 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:56:25,439 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:56:25,457 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:56:25,469 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:56:25,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:25 WrapperNode [2022-11-16 11:56:25,471 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:56:25,472 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:56:25,473 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:56:25,473 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:56:25,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:25" (1/1) ... [2022-11-16 11:56:25,488 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:25" (1/1) ... [2022-11-16 11:56:25,508 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 11 [2022-11-16 11:56:25,508 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:56:25,510 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:56:25,510 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:56:25,510 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:56:25,520 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:25" (1/1) ... [2022-11-16 11:56:25,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:25" (1/1) ... [2022-11-16 11:56:25,521 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:25" (1/1) ... [2022-11-16 11:56:25,521 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:25" (1/1) ... [2022-11-16 11:56:25,523 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:25" (1/1) ... [2022-11-16 11:56:25,528 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:25" (1/1) ... [2022-11-16 11:56:25,529 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:25" (1/1) ... [2022-11-16 11:56:25,529 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:25" (1/1) ... [2022-11-16 11:56:25,531 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:56:25,532 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:56:25,533 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:56:25,533 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:56:25,535 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:25" (1/1) ... [2022-11-16 11:56:25,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:56:25,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d580cd01-79bb-4029-9786-634237bba67f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:56:25,573 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d580cd01-79bb-4029-9786-634237bba67f/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:56:25,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d580cd01-79bb-4029-9786-634237bba67f/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-16 11:56:25,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:56:25,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:56:25,693 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:56:25,696 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:56:25,796 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:56:25,804 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:56:25,804 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 11:56:25,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:56:25 BoogieIcfgContainer [2022-11-16 11:56:25,808 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:56:25,809 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-16 11:56:25,809 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-16 11:56:25,813 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-16 11:56:25,814 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-16 11:56:25,815 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 16.11 11:56:25" (1/3) ... [2022-11-16 11:56:25,816 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@15e32f65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 16.11 11:56:25, skipping insertion in model container [2022-11-16 11:56:25,816 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-16 11:56:25,816 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:25" (2/3) ... [2022-11-16 11:56:25,817 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@15e32f65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 16.11 11:56:25, skipping insertion in model container [2022-11-16 11:56:25,817 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-16 11:56:25,817 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:56:25" (3/3) ... [2022-11-16 11:56:25,818 INFO L332 chiAutomizerObserver]: Analyzing ICFG Division-2.c [2022-11-16 11:56:25,871 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-16 11:56:25,871 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-16 11:56:25,871 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-16 11:56:25,871 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-16 11:56:25,871 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-16 11:56:25,871 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-16 11:56:25,871 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-16 11:56:25,872 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-16 11:56:25,876 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:25,894 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-11-16 11:56:25,894 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 11:56:25,895 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 11:56:25,900 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-16 11:56:25,900 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-11-16 11:56:25,900 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-16 11:56:25,900 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:25,901 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-11-16 11:56:25,901 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 11:56:25,902 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 11:56:25,902 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-16 11:56:25,902 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-11-16 11:56:25,910 INFO L748 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 5#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~y~0#1;main_~y~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 6#L14-2true [2022-11-16 11:56:25,910 INFO L750 eck$LassoCheckResult]: Loop: 6#L14-2true assume !!(main_~y~0#1 >= 0 && main_~y~0#1 <= 10);main_~y~0#1 := (if 1 + 2 * main_~y~0#1 < 0 && 0 != (1 + 2 * main_~y~0#1) % 2 then 1 + (1 + 2 * main_~y~0#1) / 2 else (1 + 2 * main_~y~0#1) / 2); 6#L14-2true [2022-11-16 11:56:25,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:56:25,917 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-11-16 11:56:25,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:56:25,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143880180] [2022-11-16 11:56:25,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:56:25,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:56:26,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:56:26,003 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:56:26,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:56:26,023 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:56:26,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:56:26,027 INFO L85 PathProgramCache]: Analyzing trace with hash 42, now seen corresponding path program 1 times [2022-11-16 11:56:26,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:56:26,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769001260] [2022-11-16 11:56:26,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:56:26,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:56:26,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:56:26,047 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:56:26,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:56:26,067 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:56:26,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:56:26,071 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2022-11-16 11:56:26,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:56:26,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288032547] [2022-11-16 11:56:26,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:56:26,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:56:26,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:56:26,086 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:56:26,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:56:26,098 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:56:26,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:56:26,265 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:56:26,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:56:26,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 16.11 11:56:26 BoogieIcfgContainer [2022-11-16 11:56:26,301 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-16 11:56:26,302 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 11:56:26,302 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 11:56:26,302 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 11:56:26,303 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:56:25" (3/4) ... [2022-11-16 11:56:26,305 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-11-16 11:56:26,364 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d580cd01-79bb-4029-9786-634237bba67f/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 11:56:26,378 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 11:56:26,381 INFO L158 Benchmark]: Toolchain (without parser) took 1232.60ms. Allocated memory is still 111.1MB. Free memory was 69.9MB in the beginning and 57.9MB in the end (delta: 12.0MB). Peak memory consumption was 10.3MB. Max. memory is 16.1GB. [2022-11-16 11:56:26,381 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 111.1MB. Free memory is still 86.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:56:26,382 INFO L158 Benchmark]: CACSL2BoogieTranslator took 317.78ms. Allocated memory is still 111.1MB. Free memory was 69.7MB in the beginning and 87.8MB in the end (delta: -18.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 11:56:26,383 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.02ms. Allocated memory is still 111.1MB. Free memory was 87.8MB in the beginning and 86.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:56:26,384 INFO L158 Benchmark]: Boogie Preprocessor took 21.56ms. Allocated memory is still 111.1MB. Free memory was 86.6MB in the beginning and 85.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:56:26,384 INFO L158 Benchmark]: RCFGBuilder took 275.33ms. Allocated memory is still 111.1MB. Free memory was 85.5MB in the beginning and 77.4MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 11:56:26,385 INFO L158 Benchmark]: BuchiAutomizer took 492.65ms. Allocated memory is still 111.1MB. Free memory was 77.1MB in the beginning and 59.7MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-16 11:56:26,386 INFO L158 Benchmark]: Witness Printer took 76.93ms. Allocated memory is still 111.1MB. Free memory was 59.3MB in the beginning and 57.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:56:26,398 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 111.1MB. Free memory is still 86.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 317.78ms. Allocated memory is still 111.1MB. Free memory was 69.7MB in the beginning and 87.8MB in the end (delta: -18.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.02ms. Allocated memory is still 111.1MB. Free memory was 87.8MB in the beginning and 86.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 21.56ms. Allocated memory is still 111.1MB. Free memory was 86.6MB in the beginning and 85.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 275.33ms. Allocated memory is still 111.1MB. Free memory was 85.5MB in the beginning and 77.4MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 492.65ms. Allocated memory is still 111.1MB. Free memory was 77.1MB in the beginning and 59.7MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 76.93ms. Allocated memory is still 111.1MB. Free memory was 59.3MB in the beginning and 57.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.4s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. 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 -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 14]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L13] int y = __VERIFIER_nondet_int(); Loop: [L14] COND TRUE y >= 0 && y <= 10 [L15] y = (2*y + 1) / 2 End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 14]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L13] int y = __VERIFIER_nondet_int(); Loop: [L14] COND TRUE y >= 0 && y <= 10 [L15] y = (2*y + 1) / 2 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2022-11-16 11:56:26,435 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d580cd01-79bb-4029-9786-634237bba67f/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)