./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-bwb/or-05.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-bwb/or-05.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G --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 20b5afe7d096cb4f321e68d661b1c8a8cfe0ebb83d6f072ed9abae2528a48b1c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:46:22,801 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:46:22,803 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:46:22,856 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:46:22,856 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:46:22,861 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:46:22,864 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:46:22,867 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:46:22,869 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:46:22,871 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:46:22,872 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:46:22,874 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:46:22,874 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:46:22,876 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:46:22,878 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:46:22,880 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:46:22,881 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:46:22,882 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:46:22,885 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:46:22,887 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:46:22,889 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:46:22,891 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:46:22,893 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:46:22,894 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:46:22,898 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:46:22,898 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:46:22,899 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:46:22,900 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:46:22,901 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:46:22,902 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:46:22,903 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:46:22,904 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:46:22,905 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:46:22,906 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:46:22,908 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:46:22,908 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:46:22,909 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:46:22,910 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:46:22,910 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:46:22,912 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:46:22,913 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:46:22,914 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-11-23 13:46:22,940 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:46:22,941 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:46:22,941 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:46:22,941 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:46:22,942 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:46:22,943 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:46:22,943 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:46:22,943 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-23 13:46:22,944 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-23 13:46:22,944 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-23 13:46:22,944 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-23 13:46:22,944 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-23 13:46:22,945 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-23 13:46:22,945 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:46:22,945 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 13:46:22,945 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:46:22,946 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:46:22,946 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-23 13:46:22,946 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-23 13:46:22,946 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-23 13:46:22,946 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 13:46:22,947 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-23 13:46:22,947 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:46:22,947 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-23 13:46:22,947 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:46:22,948 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:46:22,948 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:46:22,948 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 13:46:22,948 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:46:22,950 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-23 13:46:22,950 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_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 20b5afe7d096cb4f321e68d661b1c8a8cfe0ebb83d6f072ed9abae2528a48b1c [2021-11-23 13:46:23,234 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:46:23,256 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:46:23,259 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:46:23,261 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:46:23,262 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:46:23,264 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/termination-bwb/or-05.c [2021-11-23 13:46:23,340 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/data/c5aaa4c68/425bbe46f9db4466962fdc1bb0dba9a0/FLAG8d2603f1a [2021-11-23 13:46:23,888 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:46:23,889 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/sv-benchmarks/c/termination-bwb/or-05.c [2021-11-23 13:46:23,895 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/data/c5aaa4c68/425bbe46f9db4466962fdc1bb0dba9a0/FLAG8d2603f1a [2021-11-23 13:46:24,298 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/data/c5aaa4c68/425bbe46f9db4466962fdc1bb0dba9a0 [2021-11-23 13:46:24,301 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:46:24,302 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:46:24,304 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:46:24,305 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:46:24,308 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:46:24,309 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:46:24" (1/1) ... [2021-11-23 13:46:24,310 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21fb6c01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:24, skipping insertion in model container [2021-11-23 13:46:24,311 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:46:24" (1/1) ... [2021-11-23 13:46:24,318 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:46:24,331 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:46:24,494 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:46:24,498 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:46:24,510 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:46:24,524 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:46:24,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:24 WrapperNode [2021-11-23 13:46:24,524 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:46:24,526 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:46:24,526 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:46:24,526 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:46:24,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:24" (1/1) ... [2021-11-23 13:46:24,538 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:24" (1/1) ... [2021-11-23 13:46:24,555 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 18 [2021-11-23 13:46:24,556 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:46:24,557 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:46:24,557 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:46:24,557 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:46:24,566 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:24" (1/1) ... [2021-11-23 13:46:24,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:24" (1/1) ... [2021-11-23 13:46:24,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:24" (1/1) ... [2021-11-23 13:46:24,568 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:24" (1/1) ... [2021-11-23 13:46:24,570 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:24" (1/1) ... [2021-11-23 13:46:24,574 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:24" (1/1) ... [2021-11-23 13:46:24,575 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:24" (1/1) ... [2021-11-23 13:46:24,577 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:46:24,578 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:46:24,578 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:46:24,578 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:46:24,579 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:24" (1/1) ... [2021-11-23 13:46:24,587 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:46:24,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:46:24,614 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:46:24,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-23 13:46:24,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:46:24,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:46:24,710 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:46:24,711 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:46:24,782 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:46:24,789 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:46:24,789 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 13:46:24,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:46:24 BoogieIcfgContainer [2021-11-23 13:46:24,791 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:46:24,792 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-23 13:46:24,792 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-23 13:46:24,804 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-23 13:46:24,804 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-23 13:46:24,805 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.11 01:46:24" (1/3) ... [2021-11-23 13:46:24,807 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@57cfd070 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 01:46:24, skipping insertion in model container [2021-11-23 13:46:24,807 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-23 13:46:24,807 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:24" (2/3) ... [2021-11-23 13:46:24,808 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@57cfd070 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 01:46:24, skipping insertion in model container [2021-11-23 13:46:24,808 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-23 13:46:24,808 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:46:24" (3/3) ... [2021-11-23 13:46:24,810 INFO L388 chiAutomizerObserver]: Analyzing ICFG or-05.c [2021-11-23 13:46:24,867 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-23 13:46:24,868 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-23 13:46:24,868 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-23 13:46:24,868 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-23 13:46:24,868 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-23 13:46:24,869 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-23 13:46:24,869 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-23 13:46:24,869 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-23 13:46:24,885 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:24,915 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-23 13:46:24,916 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:46:24,916 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:46:24,928 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-23 13:46:24,928 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-23 13:46:24,928 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-23 13:46:24,929 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:24,930 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-23 13:46:24,931 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:46:24,931 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:46:24,931 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-23 13:46:24,932 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-23 13:46:24,938 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 8#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_~x~0#1;havoc main_~y~0#1;havoc main_~x~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := 0; 6#L20-2true [2021-11-23 13:46:24,939 INFO L793 eck$LassoCheckResult]: Loop: 6#L20-2true assume !!(main_~x~0#1 > 0); 9#L20true assume !(1 == main_~y~0#1);main_~y~0#1 := 1;main_~x~0#1 := main_~x~0#1 - main_~y~0#1; 6#L20-2true [2021-11-23 13:46:24,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:46:24,946 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-11-23 13:46:24,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:46:24,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696795222] [2021-11-23 13:46:24,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:46:24,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:46:25,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:46:25,027 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:46:25,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:46:25,058 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:46:25,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:46:25,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 1 times [2021-11-23 13:46:25,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:46:25,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565265857] [2021-11-23 13:46:25,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:46:25,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:46:25,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:46:25,097 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:46:25,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:46:25,103 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:46:25,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:46:25,105 INFO L85 PathProgramCache]: Analyzing trace with hash 925800, now seen corresponding path program 1 times [2021-11-23 13:46:25,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:46:25,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789925913] [2021-11-23 13:46:25,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:46:25,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:46:25,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:46:25,113 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:46:25,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:46:25,121 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:46:25,192 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:46:25,193 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:46:25,193 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:46:25,194 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:46:25,194 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-23 13:46:25,194 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:46:25,194 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:46:25,194 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:46:25,195 INFO L133 ssoRankerPreferences]: Filename of dumped script: or-05.c_Iteration1_Loop [2021-11-23 13:46:25,195 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:46:25,195 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:46:25,212 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:46:25,341 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:46:25,348 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-23 13:46:25,351 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:46:25,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:46:25,356 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:46:25,358 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:46:25,358 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:46:25,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-11-23 13:46:25,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-11-23 13:46:25,438 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:46:25,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:46:25,440 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:46:25,446 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-23 13:46:25,446 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:46:25,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-11-23 13:46:25,550 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-23 13:46:25,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-11-23 13:46:25,557 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:46:25,557 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:46:25,557 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:46:25,558 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:46:25,558 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-23 13:46:25,558 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:46:25,558 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:46:25,558 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:46:25,558 INFO L133 ssoRankerPreferences]: Filename of dumped script: or-05.c_Iteration1_Loop [2021-11-23 13:46:25,559 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:46:25,559 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:46:25,560 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:46:25,664 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:46:25,694 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-23 13:46:25,696 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:46:25,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:46:25,697 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:46:25,704 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 [2021-11-23 13:46:25,713 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:46:25,714 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:46:25,714 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:46:25,714 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-11-23 13:46:25,714 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:46:25,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-11-23 13:46:25,722 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-11-23 13:46:25,723 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:46:25,739 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-23 13:46:25,746 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-11-23 13:46:25,747 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-23 13:46:25,748 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:46:25,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:46:25,750 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:46:25,771 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-23 13:46:25,771 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-23 13:46:25,771 INFO L513 LassoAnalysis]: Proved termination. [2021-11-23 13:46:25,772 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2021-11-23 13:46:25,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-11-23 13:46:25,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-11-23 13:46:25,810 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-23 13:46:25,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:46:25,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:25,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 13:46:25,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:46:25,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:25,853 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 13:46:25,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:46:25,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:46:25,921 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 [2021-11-23 13:46:25,922 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:25,996 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 24 states and 31 transitions. Complement of second has 8 states. [2021-11-23 13:46:25,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-11-23 13:46:26,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:26,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 12 transitions. [2021-11-23 13:46:26,007 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 2 letters. Loop has 2 letters. [2021-11-23 13:46:26,008 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:46:26,008 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 4 letters. Loop has 2 letters. [2021-11-23 13:46:26,009 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:46:26,009 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 2 letters. Loop has 4 letters. [2021-11-23 13:46:26,010 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:46:26,011 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 31 transitions. [2021-11-23 13:46:26,018 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-23 13:46:26,023 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 8 states and 11 transitions. [2021-11-23 13:46:26,024 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2021-11-23 13:46:26,025 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2021-11-23 13:46:26,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2021-11-23 13:46:26,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 13:46:26,026 INFO L681 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2021-11-23 13:46:26,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2021-11-23 13:46:26,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-11-23 13:46:26,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 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) [2021-11-23 13:46:26,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2021-11-23 13:46:26,060 INFO L704 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2021-11-23 13:46:26,060 INFO L587 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2021-11-23 13:46:26,060 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-23 13:46:26,060 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2021-11-23 13:46:26,062 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-23 13:46:26,062 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:46:26,062 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:46:26,063 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-11-23 13:46:26,063 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-23 13:46:26,063 INFO L791 eck$LassoCheckResult]: Stem: 72#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 73#L-1 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_~x~0#1;havoc main_~y~0#1;havoc main_~x~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := 0; 79#L20-2 assume !!(main_~x~0#1 > 0); 78#L20 assume 1 == main_~y~0#1;main_~x~0#1 := ~bitwiseOr(main_~y~0#1, 1 + main_~y~0#1);main_~x~0#1 := main_~x~0#1 - main_~y~0#1; 74#L20-2 [2021-11-23 13:46:26,064 INFO L793 eck$LassoCheckResult]: Loop: 74#L20-2 assume !!(main_~x~0#1 > 0); 75#L20 assume !(1 == main_~y~0#1);main_~y~0#1 := 1;main_~x~0#1 := main_~x~0#1 - main_~y~0#1; 74#L20-2 [2021-11-23 13:46:26,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:46:26,066 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2021-11-23 13:46:26,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:46:26,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325894904] [2021-11-23 13:46:26,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:46:26,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:46:26,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:26,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:46:26,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:46:26,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325894904] [2021-11-23 13:46:26,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325894904] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:46:26,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:46:26,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:46:26,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231751738] [2021-11-23 13:46:26,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:46:26,122 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-23 13:46:26,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:46:26,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 2 times [2021-11-23 13:46:26,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:46:26,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997695637] [2021-11-23 13:46:26,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:46:26,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:46:26,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:46:26,135 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:46:26,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:46:26,145 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:46:26,193 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:46:26,194 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:46:26,194 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:46:26,194 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:46:26,195 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-23 13:46:26,195 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:46:26,195 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:46:26,195 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:46:26,195 INFO L133 ssoRankerPreferences]: Filename of dumped script: or-05.c_Iteration2_Loop [2021-11-23 13:46:26,195 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:46:26,196 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:46:26,198 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:46:26,303 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:46:26,303 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-23 13:46:26,304 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:46:26,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:46:26,309 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:46:26,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-11-23 13:46:26,312 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:46:26,313 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:46:26,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-11-23 13:46:26,405 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:46:26,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:46:26,409 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:46:26,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-11-23 13:46:26,413 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-23 13:46:26,413 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:46:26,494 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-23 13:46:26,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-11-23 13:46:26,501 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:46:26,501 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:46:26,501 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:46:26,501 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:46:26,501 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-23 13:46:26,501 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:46:26,501 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:46:26,501 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:46:26,502 INFO L133 ssoRankerPreferences]: Filename of dumped script: or-05.c_Iteration2_Loop [2021-11-23 13:46:26,502 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:46:26,502 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:46:26,503 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:46:26,587 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:46:26,588 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-23 13:46:26,589 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:46:26,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:46:26,597 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:46:26,604 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 [2021-11-23 13:46:26,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-11-23 13:46:26,613 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:46:26,613 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:46:26,614 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:46:26,614 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-11-23 13:46:26,614 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:46:26,618 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-11-23 13:46:26,618 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:46:26,632 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-23 13:46:26,637 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-23 13:46:26,637 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-23 13:46:26,638 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:46:26,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:46:26,673 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:46:26,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-11-23 13:46:26,675 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-23 13:46:26,675 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-23 13:46:26,676 INFO L513 LassoAnalysis]: Proved termination. [2021-11-23 13:46:26,676 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2021-11-23 13:46:26,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-11-23 13:46:26,716 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-23 13:46:26,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:46:26,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:26,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 13:46:26,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:46:26,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:26,766 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 13:46:26,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:46:26,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:46:26,796 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 [2021-11-23 13:46:26,797 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:26,813 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 12 states and 17 transitions. Complement of second has 5 states. [2021-11-23 13:46:26,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-11-23 13:46:26,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:26,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2021-11-23 13:46:26,815 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2021-11-23 13:46:26,816 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:46:26,816 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2021-11-23 13:46:26,817 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:46:26,817 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 4 letters. [2021-11-23 13:46:26,818 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:46:26,818 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 17 transitions. [2021-11-23 13:46:26,820 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-23 13:46:26,822 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 17 transitions. [2021-11-23 13:46:26,822 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-11-23 13:46:26,822 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-11-23 13:46:26,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2021-11-23 13:46:26,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 13:46:26,823 INFO L681 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2021-11-23 13:46:26,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2021-11-23 13:46:26,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-11-23 13:46:26,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:26,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2021-11-23 13:46:26,827 INFO L704 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2021-11-23 13:46:26,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:46:26,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:46:26,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:46:26,831 INFO L87 Difference]: Start difference. First operand 12 states and 17 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:26,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:46:26,838 INFO L93 Difference]: Finished difference Result 14 states and 18 transitions. [2021-11-23 13:46:26,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:46:26,839 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 18 transitions. [2021-11-23 13:46:26,840 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-23 13:46:26,841 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 13 states and 17 transitions. [2021-11-23 13:46:26,841 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-11-23 13:46:26,841 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-11-23 13:46:26,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 17 transitions. [2021-11-23 13:46:26,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 13:46:26,842 INFO L681 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2021-11-23 13:46:26,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 17 transitions. [2021-11-23 13:46:26,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2021-11-23 13:46:26,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:26,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2021-11-23 13:46:26,844 INFO L704 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2021-11-23 13:46:26,844 INFO L587 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2021-11-23 13:46:26,844 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-11-23 13:46:26,845 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 16 transitions. [2021-11-23 13:46:26,845 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-23 13:46:26,845 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:46:26,846 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:46:26,846 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1] [2021-11-23 13:46:26,846 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-23 13:46:26,846 INFO L791 eck$LassoCheckResult]: Stem: 156#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 157#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~y~0#1, main_~x~0#1;havoc main_~y~0#1;havoc main_~x~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := 0; 158#L20-2 assume !!(main_~x~0#1 > 0); 159#L20 assume !(1 == main_~y~0#1);main_~y~0#1 := 1;main_~x~0#1 := main_~x~0#1 - main_~y~0#1; 167#L20-2 assume !!(main_~x~0#1 > 0); 163#L20 assume 1 == main_~y~0#1;main_~x~0#1 := ~bitwiseOr(main_~y~0#1, 1 + main_~y~0#1);main_~x~0#1 := main_~x~0#1 - main_~y~0#1; 164#L20-2 assume !!(main_~x~0#1 > 0); 161#L20 assume 1 == main_~y~0#1;main_~x~0#1 := ~bitwiseOr(main_~y~0#1, 1 + main_~y~0#1);main_~x~0#1 := main_~x~0#1 - main_~y~0#1; 166#L20-2 [2021-11-23 13:46:26,846 INFO L793 eck$LassoCheckResult]: Loop: 166#L20-2 assume !!(main_~x~0#1 > 0); 165#L20 assume !(1 == main_~y~0#1);main_~y~0#1 := 1;main_~x~0#1 := main_~x~0#1 - main_~y~0#1; 166#L20-2 [2021-11-23 13:46:26,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:46:26,847 INFO L85 PathProgramCache]: Analyzing trace with hash 297591406, now seen corresponding path program 1 times [2021-11-23 13:46:26,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:46:26,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736898057] [2021-11-23 13:46:26,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:46:26,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:46:26,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:46:26,855 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:46:26,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:46:26,862 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:46:26,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:46:26,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 3 times [2021-11-23 13:46:26,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:46:26,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478595990] [2021-11-23 13:46:26,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:46:26,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:46:26,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:46:26,867 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:46:26,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:46:26,871 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:46:26,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:46:26,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1777467309, now seen corresponding path program 2 times [2021-11-23 13:46:26,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:46:26,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687429989] [2021-11-23 13:46:26,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:46:26,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:46:26,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:26,894 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-23 13:46:26,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:46:26,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687429989] [2021-11-23 13:46:26,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687429989] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:46:26,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:46:26,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:46:26,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082067392] [2021-11-23 13:46:26,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:46:26,920 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:46:26,920 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:46:26,920 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:46:26,920 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:46:26,920 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-23 13:46:26,920 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:46:26,920 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:46:26,920 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:46:26,921 INFO L133 ssoRankerPreferences]: Filename of dumped script: or-05.c_Iteration3_Loop [2021-11-23 13:46:26,921 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:46:26,921 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:46:26,922 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:46:26,979 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:46:26,979 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-23 13:46:26,979 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:46:26,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:46:26,980 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:46:26,992 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:46:26,992 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:46:27,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-11-23 13:46:27,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-11-23 13:46:27,059 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:46:27,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:46:27,061 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:46:27,067 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-23 13:46:27,067 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:46:27,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-11-23 13:46:27,157 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-23 13:46:27,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-11-23 13:46:27,165 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:46:27,165 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:46:27,165 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:46:27,165 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:46:27,165 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-23 13:46:27,165 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:46:27,165 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:46:27,165 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:46:27,165 INFO L133 ssoRankerPreferences]: Filename of dumped script: or-05.c_Iteration3_Loop [2021-11-23 13:46:27,166 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:46:27,166 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:46:27,167 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:46:27,238 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:46:27,238 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-23 13:46:27,238 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:46:27,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:46:27,239 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:46:27,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-11-23 13:46:27,253 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 [2021-11-23 13:46:27,263 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:46:27,263 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:46:27,264 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:46:27,264 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-11-23 13:46:27,264 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:46:27,267 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-11-23 13:46:27,267 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:46:27,293 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-23 13:46:27,309 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-11-23 13:46:27,309 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-23 13:46:27,309 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:46:27,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:46:27,311 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:46:27,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-11-23 13:46:27,317 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-23 13:46:27,317 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-23 13:46:27,317 INFO L513 LassoAnalysis]: Proved termination. [2021-11-23 13:46:27,317 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2021-11-23 13:46:27,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-11-23 13:46:27,344 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-23 13:46:27,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:46:27,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:27,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 13:46:27,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:46:27,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:27,402 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 13:46:27,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:46:27,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:46:27,432 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 [2021-11-23 13:46:27,432 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) [2021-11-23 13:46:27,451 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) Result 14 states and 20 transitions. Complement of second has 5 states. [2021-11-23 13:46:27,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-11-23 13:46:27,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) [2021-11-23 13:46:27,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2021-11-23 13:46:27,453 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 8 letters. Loop has 2 letters. [2021-11-23 13:46:27,453 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:46:27,454 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-23 13:46:27,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:46:27,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:27,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 13:46:27,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:46:27,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:27,534 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 13:46:27,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:46:27,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:46:27,563 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2021-11-23 13:46:27,563 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) [2021-11-23 13:46:27,572 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) Result 14 states and 20 transitions. Complement of second has 5 states. [2021-11-23 13:46:27,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-11-23 13:46:27,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) [2021-11-23 13:46:27,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2021-11-23 13:46:27,574 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 8 letters. Loop has 2 letters. [2021-11-23 13:46:27,574 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:46:27,574 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-23 13:46:27,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:46:27,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:27,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 13:46:27,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:46:27,634 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2021-11-23 13:46:27,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:27,679 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 13:46:27,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:46:27,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:46:27,696 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-11-23 13:46:27,716 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) [2021-11-23 13:46:27,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-11-23 13:46:27,743 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) Result 16 states and 23 transitions. Complement of second has 4 states. [2021-11-23 13:46:27,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-11-23 13:46:27,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) [2021-11-23 13:46:27,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2021-11-23 13:46:27,745 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 2 letters. [2021-11-23 13:46:27,746 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:46:27,746 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 10 letters. Loop has 2 letters. [2021-11-23 13:46:27,746 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:46:27,746 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 4 letters. [2021-11-23 13:46:27,747 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:46:27,747 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 23 transitions. [2021-11-23 13:46:27,748 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-11-23 13:46:27,749 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 14 states and 19 transitions. [2021-11-23 13:46:27,749 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2021-11-23 13:46:27,749 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-11-23 13:46:27,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 19 transitions. [2021-11-23 13:46:27,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 13:46:27,750 INFO L681 BuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2021-11-23 13:46:27,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 19 transitions. [2021-11-23 13:46:27,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 7. [2021-11-23 13:46:27,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 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) [2021-11-23 13:46:27,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2021-11-23 13:46:27,751 INFO L704 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2021-11-23 13:46:27,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:46:27,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:46:27,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:46:27,753 INFO L87 Difference]: Start difference. First operand 7 states and 9 transitions. Second operand has 3 states, 2 states have (on average 3.5) 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) [2021-11-23 13:46:27,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-11-23 13:46:27,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:46:27,781 INFO L93 Difference]: Finished difference Result 8 states and 9 transitions. [2021-11-23 13:46:27,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:46:27,782 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 9 transitions. [2021-11-23 13:46:27,783 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-23 13:46:27,783 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 7 states and 7 transitions. [2021-11-23 13:46:27,783 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2021-11-23 13:46:27,783 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-11-23 13:46:27,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 7 transitions. [2021-11-23 13:46:27,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 13:46:27,784 INFO L681 BuchiCegarLoop]: Abstraction has 7 states and 7 transitions. [2021-11-23 13:46:27,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 7 transitions. [2021-11-23 13:46:27,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2021-11-23 13:46:27,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.0) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:27,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2021-11-23 13:46:27,785 INFO L704 BuchiCegarLoop]: Abstraction has 6 states and 6 transitions. [2021-11-23 13:46:27,785 INFO L587 BuchiCegarLoop]: Abstraction has 6 states and 6 transitions. [2021-11-23 13:46:27,785 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-11-23 13:46:27,785 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 6 transitions. [2021-11-23 13:46:27,786 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-23 13:46:27,786 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:46:27,786 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:46:27,786 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-11-23 13:46:27,786 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-23 13:46:27,786 INFO L791 eck$LassoCheckResult]: Stem: 350#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 351#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~y~0#1, main_~x~0#1;havoc main_~y~0#1;havoc main_~x~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := 0; 352#L20-2 assume !!(main_~x~0#1 > 0); 353#L20 assume !(1 == main_~y~0#1);main_~y~0#1 := 1;main_~x~0#1 := main_~x~0#1 - main_~y~0#1; 355#L20-2 [2021-11-23 13:46:27,787 INFO L793 eck$LassoCheckResult]: Loop: 355#L20-2 assume !!(main_~x~0#1 > 0); 354#L20 assume 1 == main_~y~0#1;main_~x~0#1 := ~bitwiseOr(main_~y~0#1, 1 + main_~y~0#1);main_~x~0#1 := main_~x~0#1 - main_~y~0#1; 355#L20-2 [2021-11-23 13:46:27,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:46:27,787 INFO L85 PathProgramCache]: Analyzing trace with hash 925800, now seen corresponding path program 2 times [2021-11-23 13:46:27,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:46:27,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835824744] [2021-11-23 13:46:27,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:46:27,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:46:27,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:46:27,793 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:46:27,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:46:27,797 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:46:27,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:46:27,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1316, now seen corresponding path program 1 times [2021-11-23 13:46:27,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:46:27,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704605917] [2021-11-23 13:46:27,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:46:27,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:46:27,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:46:27,802 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:46:27,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:46:27,806 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:46:27,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:46:27,806 INFO L85 PathProgramCache]: Analyzing trace with hash 889694155, now seen corresponding path program 3 times [2021-11-23 13:46:27,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:46:27,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139939175] [2021-11-23 13:46:27,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:46:27,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:46:27,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:46:27,812 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:46:27,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:46:27,818 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:46:27,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.11 01:46:27 BoogieIcfgContainer [2021-11-23 13:46:27,883 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-23 13:46:27,883 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 13:46:27,883 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 13:46:27,884 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 13:46:27,884 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:46:24" (3/4) ... [2021-11-23 13:46:27,888 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-23 13:46:27,888 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 13:46:27,889 INFO L158 Benchmark]: Toolchain (without parser) took 3586.25ms. Allocated memory was 119.5MB in the beginning and 161.5MB in the end (delta: 41.9MB). Free memory was 89.0MB in the beginning and 119.2MB in the end (delta: -30.2MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. [2021-11-23 13:46:27,890 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 119.5MB. Free memory is still 73.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:46:27,890 INFO L158 Benchmark]: CACSL2BoogieTranslator took 220.68ms. Allocated memory is still 119.5MB. Free memory was 89.0MB in the beginning and 95.1MB in the end (delta: -6.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 13:46:27,891 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.46ms. Allocated memory is still 119.5MB. Free memory was 95.1MB in the beginning and 93.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:46:27,892 INFO L158 Benchmark]: Boogie Preprocessor took 20.02ms. Allocated memory is still 119.5MB. Free memory was 93.9MB in the beginning and 93.0MB in the end (delta: 915.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 13:46:27,892 INFO L158 Benchmark]: RCFGBuilder took 213.98ms. Allocated memory is still 119.5MB. Free memory was 92.7MB in the beginning and 84.9MB in the end (delta: 7.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 13:46:27,893 INFO L158 Benchmark]: BuchiAutomizer took 3090.48ms. Allocated memory was 119.5MB in the beginning and 161.5MB in the end (delta: 41.9MB). Free memory was 84.6MB in the beginning and 120.2MB in the end (delta: -35.6MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. [2021-11-23 13:46:27,894 INFO L158 Benchmark]: Witness Printer took 4.60ms. Allocated memory is still 161.5MB. Free memory was 120.2MB in the beginning and 119.2MB in the end (delta: 949.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:46:27,898 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 119.5MB. Free memory is still 73.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 220.68ms. Allocated memory is still 119.5MB. Free memory was 89.0MB in the beginning and 95.1MB in the end (delta: -6.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.46ms. Allocated memory is still 119.5MB. Free memory was 95.1MB in the beginning and 93.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 20.02ms. Allocated memory is still 119.5MB. Free memory was 93.9MB in the beginning and 93.0MB in the end (delta: 915.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 213.98ms. Allocated memory is still 119.5MB. Free memory was 92.7MB in the beginning and 84.9MB in the end (delta: 7.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 3090.48ms. Allocated memory was 119.5MB in the beginning and 161.5MB in the end (delta: 41.9MB). Free memory was 84.6MB in the beginning and 120.2MB in the end (delta: -35.6MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. * Witness Printer took 4.60ms. Allocated memory is still 161.5MB. Free memory was 120.2MB in the beginning and 119.2MB in the end (delta: 949.1kB). 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 5 terminating modules (2 trivial, 2 deterministic, 1 nondeterministic) and one module whose termination is unknown.One deterministic module has affine ranking function x and consists of 5 locations. One deterministic module has affine ranking function x and consists of 3 locations. One nondeterministic module has affine ranking function x and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.0s and 4 iterations. TraceHistogramMax:3. Analysis of lassos took 2.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 12 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 30 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 25 mSDsluCounter, 49 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 33 IncrementalHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 39 mSDtfsCounter, 33 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT1 conc0 concLT1 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq182 hnf93 smp100 dnf172 smp100 tf103 neg96 sie115 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 76ms VariablesStem: 0 VariablesLoop: 4 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 0 MotzkinApplications: 4 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Unable to decide termination Buchi Automizer cannot decide termination for the following lasso because it contains the following overapproximations. Overapproximations C: y|(y+1) [21] (Reason bitwiseOr) Lasso Stem: "assume { :begin_inline_ULTIMATE.init } true;" "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_~x~0#1;havoc main_~y~0#1;havoc main_~x~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := 0;" "assume !!(main_~x~0#1 > 0);" "assume !(1 == main_~y~0#1);main_~y~0#1 := 1;main_~x~0#1 := main_~x~0#1 - main_~y~0#1;" Loop: "assume !!(main_~x~0#1 > 0);" "assume 1 == main_~y~0#1;main_~x~0#1 := ~bitwiseOr(main_~y~0#1, 1 + main_~y~0#1);main_~x~0#1 := main_~x~0#1 - main_~y~0#1;" RESULT: Ultimate could not prove your program: unable to determine termination [2021-11-23 13:46:27,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/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 Using bit-precise analysis No suitable file found in config dir /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9872ac-447d-40f2-a354-d91ae4da1409/bin/uautomizer-wIGwrQj20G/config using search string *Termination*64bit*_Bitvector*.epf No suitable settings file found using Termination*64bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: UNKNOWN