./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/NO_04.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b41d3d-c063-4407-bd4a-bd086d2a2e2f/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b41d3d-c063-4407-bd4a-bd086d2a2e2f/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b41d3d-c063-4407-bd4a-bd086d2a2e2f/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b41d3d-c063-4407-bd4a-bd086d2a2e2f/bin/uautomizer-w2VwFs6gM0/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/NO_04.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b41d3d-c063-4407-bd4a-bd086d2a2e2f/bin/uautomizer-w2VwFs6gM0/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b41d3d-c063-4407-bd4a-bd086d2a2e2f/bin/uautomizer-w2VwFs6gM0 --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 26441cee42562e2fd703b97b1a86d2baa847af9810285d31267fccda11d2ea67 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 15:19:33,714 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:19:33,716 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:19:33,758 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:19:33,759 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:19:33,760 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:19:33,763 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:19:33,766 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:19:33,768 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:19:33,776 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:19:33,777 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:19:33,781 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:19:33,781 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:19:33,785 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:19:33,787 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:19:33,790 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:19:33,793 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:19:33,794 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:19:33,799 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:19:33,808 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:19:33,811 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:19:33,813 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:19:33,816 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:19:33,818 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:19:33,823 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:19:33,823 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:19:33,824 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:19:33,833 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:19:33,834 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:19:33,835 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:19:33,837 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:19:33,838 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:19:33,840 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:19:33,841 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:19:33,843 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:19:33,844 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:19:33,845 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:19:33,846 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:19:33,846 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:19:33,847 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:19:33,848 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:19:33,849 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b41d3d-c063-4407-bd4a-bd086d2a2e2f/bin/uautomizer-w2VwFs6gM0/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-11-22 15:19:33,898 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:19:33,899 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:19:33,899 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:19:33,900 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:19:33,901 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:19:33,901 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:19:33,902 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:19:33,902 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-22 15:19:33,902 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-22 15:19:33,902 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-22 15:19:33,903 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-22 15:19:33,903 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-22 15:19:33,903 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-22 15:19:33,904 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:19:33,904 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-22 15:19:33,904 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 15:19:33,904 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:19:33,905 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-22 15:19:33,905 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-22 15:19:33,905 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-22 15:19:33,905 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 15:19:33,906 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-22 15:19:33,906 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:19:33,906 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-22 15:19:33,907 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:19:33,907 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:19:33,907 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:19:33,908 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 15:19:33,908 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:19:33,909 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-22 15:19:33,909 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_67b41d3d-c063-4407-bd4a-bd086d2a2e2f/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b41d3d-c063-4407-bd4a-bd086d2a2e2f/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26441cee42562e2fd703b97b1a86d2baa847af9810285d31267fccda11d2ea67 [2021-11-22 15:19:34,229 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:19:34,255 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:19:34,258 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:19:34,260 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:19:34,261 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:19:34,262 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b41d3d-c063-4407-bd4a-bd086d2a2e2f/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/termination-restricted-15/NO_04.c [2021-11-22 15:19:34,362 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b41d3d-c063-4407-bd4a-bd086d2a2e2f/bin/uautomizer-w2VwFs6gM0/data/d9003ec25/33590cee966f48deae8e86ae2875d501/FLAG9531f851d [2021-11-22 15:19:34,918 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:19:34,919 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b41d3d-c063-4407-bd4a-bd086d2a2e2f/sv-benchmarks/c/termination-restricted-15/NO_04.c [2021-11-22 15:19:34,932 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b41d3d-c063-4407-bd4a-bd086d2a2e2f/bin/uautomizer-w2VwFs6gM0/data/d9003ec25/33590cee966f48deae8e86ae2875d501/FLAG9531f851d [2021-11-22 15:19:35,267 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b41d3d-c063-4407-bd4a-bd086d2a2e2f/bin/uautomizer-w2VwFs6gM0/data/d9003ec25/33590cee966f48deae8e86ae2875d501 [2021-11-22 15:19:35,270 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:19:35,271 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:19:35,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:19:35,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:19:35,280 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:19:35,281 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:19:35" (1/1) ... [2021-11-22 15:19:35,283 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e3b8cad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:19:35, skipping insertion in model container [2021-11-22 15:19:35,284 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:19:35" (1/1) ... [2021-11-22 15:19:35,292 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:19:35,310 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:19:35,496 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:19:35,508 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 15:19:35,554 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:19:35,565 INFO L208 MainTranslator]: Completed translation [2021-11-22 15:19:35,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:19:35 WrapperNode [2021-11-22 15:19:35,565 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:19:35,566 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 15:19:35,566 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 15:19:35,567 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 15:19:35,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:19:35" (1/1) ... [2021-11-22 15:19:35,581 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:19:35" (1/1) ... [2021-11-22 15:19:35,601 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 43 [2021-11-22 15:19:35,601 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 15:19:35,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 15:19:35,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 15:19:35,603 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 15:19:35,612 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:19:35" (1/1) ... [2021-11-22 15:19:35,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:19:35" (1/1) ... [2021-11-22 15:19:35,613 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:19:35" (1/1) ... [2021-11-22 15:19:35,613 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:19:35" (1/1) ... [2021-11-22 15:19:35,616 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:19:35" (1/1) ... [2021-11-22 15:19:35,621 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:19:35" (1/1) ... [2021-11-22 15:19:35,622 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:19:35" (1/1) ... [2021-11-22 15:19:35,623 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 15:19:35,624 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 15:19:35,625 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 15:19:35,625 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 15:19:35,626 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:19:35" (1/1) ... [2021-11-22 15:19:35,634 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:19:35,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b41d3d-c063-4407-bd4a-bd086d2a2e2f/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:19:35,664 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b41d3d-c063-4407-bd4a-bd086d2a2e2f/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:19:35,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b41d3d-c063-4407-bd4a-bd086d2a2e2f/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-22 15:19:35,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 15:19:35,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 15:19:35,788 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 15:19:35,792 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 15:19:35,957 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 15:19:35,965 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 15:19:35,976 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-22 15:19:35,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:19:35 BoogieIcfgContainer [2021-11-22 15:19:35,979 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 15:19:35,980 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-22 15:19:35,980 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-22 15:19:35,984 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-22 15:19:35,985 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-22 15:19:35,985 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.11 03:19:35" (1/3) ... [2021-11-22 15:19:35,987 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@70cd788c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.11 03:19:35, skipping insertion in model container [2021-11-22 15:19:35,994 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-22 15:19:35,994 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:19:35" (2/3) ... [2021-11-22 15:19:35,995 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@70cd788c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.11 03:19:35, skipping insertion in model container [2021-11-22 15:19:35,995 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-22 15:19:35,995 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:19:35" (3/3) ... [2021-11-22 15:19:35,997 INFO L388 chiAutomizerObserver]: Analyzing ICFG NO_04.c [2021-11-22 15:19:36,097 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-22 15:19:36,110 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-22 15:19:36,110 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-22 15:19:36,111 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-22 15:19:36,111 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-22 15:19:36,111 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-22 15:19:36,111 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-22 15:19:36,111 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-22 15:19:36,155 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 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) [2021-11-22 15:19:36,183 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-11-22 15:19:36,183 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-22 15:19:36,183 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-22 15:19:36,190 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-22 15:19:36,190 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-22 15:19:36,190 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-22 15:19:36,191 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 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) [2021-11-22 15:19:36,193 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-11-22 15:19:36,194 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-22 15:19:36,194 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-22 15:19:36,194 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-22 15:19:36,194 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-22 15:19:36,202 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~l~0#1, main_~m~0#1, main_~a~0#1, main_~b~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~l~0#1;havoc main_~m~0#1;havoc main_~a~0#1;havoc main_~b~0#1;main_~i~0#1 := 0; 8#L15-2true [2021-11-22 15:19:36,202 INFO L793 eck$LassoCheckResult]: Loop: 8#L15-2true assume !!(main_~i~0#1 < 100);main_~a~0#1 := 2 + main_~i~0#1;main_~j~0#1 := 0; 11#L18-2true assume !(main_~j~0#1 < main_~a~0#1); 13#L18-3true main_~i~0#1 := 1 + main_~i~0#1; 8#L15-2true [2021-11-22 15:19:36,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:19:36,209 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-11-22 15:19:36,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:19:36,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249195877] [2021-11-22 15:19:36,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:19:36,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:19:36,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:19:36,329 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 15:19:36,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:19:36,361 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 15:19:36,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:19:36,365 INFO L85 PathProgramCache]: Analyzing trace with hash 40983, now seen corresponding path program 1 times [2021-11-22 15:19:36,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:19:36,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694613901] [2021-11-22 15:19:36,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:19:36,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:19:36,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:19:36,404 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 15:19:36,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:19:36,412 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 15:19:36,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:19:36,414 INFO L85 PathProgramCache]: Analyzing trace with hash 28699925, now seen corresponding path program 1 times [2021-11-22 15:19:36,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:19:36,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122310934] [2021-11-22 15:19:36,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:19:36,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:19:36,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:19:36,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:19:36,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:19:36,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122310934] [2021-11-22 15:19:36,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122310934] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:19:36,579 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:19:36,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:19:36,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004900263] [2021-11-22 15:19:36,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:19:36,691 INFO L210 LassoAnalysis]: Preferences: [2021-11-22 15:19:36,694 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-22 15:19:36,694 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-22 15:19:36,695 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-22 15:19:36,695 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-22 15:19:36,695 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:19:36,696 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-22 15:19:36,696 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-22 15:19:36,696 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_04.c_Iteration1_Loop [2021-11-22 15:19:36,697 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-22 15:19:36,697 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-22 15:19:36,722 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:19:36,731 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:19:36,736 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:19:36,857 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-22 15:19:36,858 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-22 15:19:36,860 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:19:36,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b41d3d-c063-4407-bd4a-bd086d2a2e2f/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:19:36,882 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b41d3d-c063-4407-bd4a-bd086d2a2e2f/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:19:36,885 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-22 15:19:36,886 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-22 15:19:36,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b41d3d-c063-4407-bd4a-bd086d2a2e2f/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-11-22 15:19:36,914 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-22 15:19:36,914 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-22 15:19:36,937 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b41d3d-c063-4407-bd4a-bd086d2a2e2f/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2021-11-22 15:19:36,938 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:19:36,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b41d3d-c063-4407-bd4a-bd086d2a2e2f/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:19:36,939 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b41d3d-c063-4407-bd4a-bd086d2a2e2f/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:19:36,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b41d3d-c063-4407-bd4a-bd086d2a2e2f/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-11-22 15:19:36,946 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-22 15:19:36,946 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-22 15:19:36,961 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-22 15:19:36,962 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-22 15:19:36,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b41d3d-c063-4407-bd4a-bd086d2a2e2f/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-11-22 15:19:36,995 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:19:36,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b41d3d-c063-4407-bd4a-bd086d2a2e2f/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:19:37,000 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b41d3d-c063-4407-bd4a-bd086d2a2e2f/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:19:37,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b41d3d-c063-4407-bd4a-bd086d2a2e2f/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-11-22 15:19:37,007 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-22 15:19:37,007 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-22 15:19:37,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b41d3d-c063-4407-bd4a-bd086d2a2e2f/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-11-22 15:19:37,054 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:19:37,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b41d3d-c063-4407-bd4a-bd086d2a2e2f/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:19:37,056 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b41d3d-c063-4407-bd4a-bd086d2a2e2f/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:19:37,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b41d3d-c063-4407-bd4a-bd086d2a2e2f/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-11-22 15:19:37,062 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-22 15:19:37,062 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-22 15:19:37,419 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-22 15:19:37,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b41d3d-c063-4407-bd4a-bd086d2a2e2f/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-11-22 15:19:37,423 INFO L210 LassoAnalysis]: Preferences: [2021-11-22 15:19:37,423 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-22 15:19:37,423 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-22 15:19:37,423 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-22 15:19:37,423 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-22 15:19:37,423 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:19:37,423 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-22 15:19:37,423 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-22 15:19:37,424 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_04.c_Iteration1_Loop [2021-11-22 15:19:37,424 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-22 15:19:37,424 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-22 15:19:37,425 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:19:37,435 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:19:37,439 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:19:37,508 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-22 15:19:37,513 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-22 15:19:37,515 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:19:37,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b41d3d-c063-4407-bd4a-bd086d2a2e2f/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:19:37,516 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b41d3d-c063-4407-bd4a-bd086d2a2e2f/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:19:37,535 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 [2021-11-22 15:19:37,547 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-22 15:19:37,547 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-22 15:19:37,547 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-22 15:19:37,547 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-22 15:19:37,559 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-22 15:19:37,560 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-22 15:19:37,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b41d3d-c063-4407-bd4a-bd086d2a2e2f/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-11-22 15:19:37,584 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-22 15:19:37,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b41d3d-c063-4407-bd4a-bd086d2a2e2f/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-11-22 15:19:37,623 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:19:37,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b41d3d-c063-4407-bd4a-bd086d2a2e2f/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:19:37,625 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b41d3d-c063-4407-bd4a-bd086d2a2e2f/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:19:37,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b41d3d-c063-4407-bd4a-bd086d2a2e2f/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-11-22 15:19:37,635 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 [2021-11-22 15:19:37,643 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-22 15:19:37,644 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-22 15:19:37,644 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-22 15:19:37,644 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-22 15:19:37,673 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-22 15:19:37,674 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-22 15:19:37,698 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-22 15:19:37,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b41d3d-c063-4407-bd4a-bd086d2a2e2f/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-11-22 15:19:37,747 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:19:37,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b41d3d-c063-4407-bd4a-bd086d2a2e2f/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:19:37,751 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b41d3d-c063-4407-bd4a-bd086d2a2e2f/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:19:37,763 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 [2021-11-22 15:19:37,775 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-22 15:19:37,775 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-22 15:19:37,776 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-22 15:19:37,776 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-22 15:19:37,776 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-22 15:19:37,780 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-22 15:19:37,781 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-22 15:19:37,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b41d3d-c063-4407-bd4a-bd086d2a2e2f/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-11-22 15:19:37,798 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-22 15:19:37,804 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-22 15:19:37,805 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-22 15:19:37,806 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:19:37,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b41d3d-c063-4407-bd4a-bd086d2a2e2f/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:19:37,808 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b41d3d-c063-4407-bd4a-bd086d2a2e2f/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:19:37,821 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-22 15:19:37,821 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-22 15:19:37,821 INFO L513 LassoAnalysis]: Proved termination. [2021-11-22 15:19:37,822 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2021-11-22 15:19:37,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b41d3d-c063-4407-bd4a-bd086d2a2e2f/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-11-22 15:19:37,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b41d3d-c063-4407-bd4a-bd086d2a2e2f/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-11-22 15:19:37,854 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-22 15:19:37,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:19:37,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:19:37,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-22 15:19:37,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:19:37,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:19:37,915 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-22 15:19:37,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:19:38,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:19:38,049 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-11-22 15:19:38,051 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 15 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 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 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-11-22 15:19:38,166 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 15 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 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 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 61 states and 103 transitions. Complement of second has 9 states. [2021-11-22 15:19:38,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-11-22 15:19:38,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-11-22 15:19:38,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 65 transitions. [2021-11-22 15:19:38,177 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 65 transitions. Stem has 2 letters. Loop has 3 letters. [2021-11-22 15:19:38,179 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-22 15:19:38,179 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 65 transitions. Stem has 5 letters. Loop has 3 letters. [2021-11-22 15:19:38,179 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-22 15:19:38,180 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 65 transitions. Stem has 2 letters. Loop has 6 letters. [2021-11-22 15:19:38,180 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-22 15:19:38,181 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 61 states and 103 transitions. [2021-11-22 15:19:38,187 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-11-22 15:19:38,193 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 61 states to 38 states and 55 transitions. [2021-11-22 15:19:38,194 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2021-11-22 15:19:38,195 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2021-11-22 15:19:38,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 55 transitions. [2021-11-22 15:19:38,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-22 15:19:38,196 INFO L681 BuchiCegarLoop]: Abstraction has 38 states and 55 transitions. [2021-11-22 15:19:38,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states and 55 transitions. [2021-11-22 15:19:38,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 25. [2021-11-22 15:19:38,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 25 states have (on average 1.44) internal successors, (36), 24 states have internal predecessors, (36), 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) [2021-11-22 15:19:38,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 36 transitions. [2021-11-22 15:19:38,223 INFO L704 BuchiCegarLoop]: Abstraction has 25 states and 36 transitions. [2021-11-22 15:19:38,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:19:38,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:19:38,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:19:38,228 INFO L87 Difference]: Start difference. First operand 25 states and 36 transitions. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-11-22 15:19:38,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:19:38,265 INFO L93 Difference]: Finished difference Result 35 states and 50 transitions. [2021-11-22 15:19:38,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:19:38,266 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 50 transitions. [2021-11-22 15:19:38,268 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-11-22 15:19:38,269 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 19 states and 26 transitions. [2021-11-22 15:19:38,270 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2021-11-22 15:19:38,270 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2021-11-22 15:19:38,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 26 transitions. [2021-11-22 15:19:38,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-22 15:19:38,271 INFO L681 BuchiCegarLoop]: Abstraction has 19 states and 26 transitions. [2021-11-22 15:19:38,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 26 transitions. [2021-11-22 15:19:38,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 12. [2021-11-22 15:19:38,273 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) [2021-11-22 15:19:38,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2021-11-22 15:19:38,274 INFO L704 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2021-11-22 15:19:38,274 INFO L587 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2021-11-22 15:19:38,274 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-22 15:19:38,274 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 16 transitions. [2021-11-22 15:19:38,275 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-11-22 15:19:38,275 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-22 15:19:38,275 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-22 15:19:38,276 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-22 15:19:38,276 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-11-22 15:19:38,276 INFO L791 eck$LassoCheckResult]: Stem: 189#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 190#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~l~0#1, main_~m~0#1, main_~a~0#1, main_~b~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~l~0#1;havoc main_~m~0#1;havoc main_~a~0#1;havoc main_~b~0#1;main_~i~0#1 := 0; 196#L15-2 [2021-11-22 15:19:38,276 INFO L793 eck$LassoCheckResult]: Loop: 196#L15-2 assume !!(main_~i~0#1 < 100);main_~a~0#1 := 2 + main_~i~0#1;main_~j~0#1 := 0; 193#L18-2 assume !!(main_~j~0#1 < main_~a~0#1);main_~k~0#1 := 3 + (main_~i~0#1 + main_~j~0#1); 194#L20-2 assume !(main_~k~0#1 >= 0); 197#L20-3 main_~j~0#1 := 1 + main_~j~0#1; 198#L18-2 assume !(main_~j~0#1 < main_~a~0#1); 195#L18-3 main_~i~0#1 := 1 + main_~i~0#1; 196#L15-2 [2021-11-22 15:19:38,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:19:38,277 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2021-11-22 15:19:38,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:19:38,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953754723] [2021-11-22 15:19:38,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:19:38,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:19:38,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:19:38,283 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 15:19:38,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:19:38,287 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 15:19:38,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:19:38,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1221756439, now seen corresponding path program 1 times [2021-11-22 15:19:38,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:19:38,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933160914] [2021-11-22 15:19:38,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:19:38,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:19:38,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:19:38,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:19:38,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:19:38,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933160914] [2021-11-22 15:19:38,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933160914] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:19:38,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:19:38,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:19:38,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134738485] [2021-11-22 15:19:38,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:19:38,324 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-22 15:19:38,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:19:38,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:19:38,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:19:38,326 INFO L87 Difference]: Start difference. First operand 12 states and 16 transitions. cyclomatic complexity: 5 Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:19:38,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:19:38,385 INFO L93 Difference]: Finished difference Result 18 states and 24 transitions. [2021-11-22 15:19:38,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:19:38,388 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 24 transitions. [2021-11-22 15:19:38,393 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 15 [2021-11-22 15:19:38,395 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 18 states and 24 transitions. [2021-11-22 15:19:38,395 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2021-11-22 15:19:38,396 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2021-11-22 15:19:38,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 24 transitions. [2021-11-22 15:19:38,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-22 15:19:38,397 INFO L681 BuchiCegarLoop]: Abstraction has 18 states and 24 transitions. [2021-11-22 15:19:38,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 24 transitions. [2021-11-22 15:19:38,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 13. [2021-11-22 15:19:38,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 12 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) [2021-11-22 15:19:38,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2021-11-22 15:19:38,406 INFO L704 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2021-11-22 15:19:38,407 INFO L587 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2021-11-22 15:19:38,407 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-11-22 15:19:38,407 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 17 transitions. [2021-11-22 15:19:38,408 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2021-11-22 15:19:38,409 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-22 15:19:38,409 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-22 15:19:38,409 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-22 15:19:38,410 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:19:38,410 INFO L791 eck$LassoCheckResult]: Stem: 228#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 229#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~l~0#1, main_~m~0#1, main_~a~0#1, main_~b~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~l~0#1;havoc main_~m~0#1;havoc main_~a~0#1;havoc main_~b~0#1;main_~i~0#1 := 0; 237#L15-2 [2021-11-22 15:19:38,411 INFO L793 eck$LassoCheckResult]: Loop: 237#L15-2 assume !!(main_~i~0#1 < 100);main_~a~0#1 := 2 + main_~i~0#1;main_~j~0#1 := 0; 230#L18-2 assume !!(main_~j~0#1 < main_~a~0#1);main_~k~0#1 := 3 + (main_~i~0#1 + main_~j~0#1); 231#L20-2 assume !!(main_~k~0#1 >= 0);main_~b~0#1 := 4 + (main_~i~0#1 + main_~j~0#1 + main_~k~0#1);main_~l~0#1 := 0; 232#L23-2 assume !(main_~l~0#1 < main_~b~0#1); 233#L23-3 main_~k~0#1 := main_~k~0#1 - 1; 238#L20-2 assume !(main_~k~0#1 >= 0); 234#L20-3 main_~j~0#1 := 1 + main_~j~0#1; 235#L18-2 assume !(main_~j~0#1 < main_~a~0#1); 236#L18-3 main_~i~0#1 := 1 + main_~i~0#1; 237#L15-2 [2021-11-22 15:19:38,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:19:38,412 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2021-11-22 15:19:38,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:19:38,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631987562] [2021-11-22 15:19:38,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:19:38,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:19:38,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:19:38,420 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 15:19:38,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:19:38,439 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 15:19:38,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:19:38,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1352067341, now seen corresponding path program 1 times [2021-11-22 15:19:38,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:19:38,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060953839] [2021-11-22 15:19:38,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:19:38,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:19:38,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:19:38,512 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:19:38,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:19:38,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060953839] [2021-11-22 15:19:38,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060953839] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:19:38,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:19:38,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:19:38,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126435578] [2021-11-22 15:19:38,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:19:38,515 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-22 15:19:38,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:19:38,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:19:38,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:19:38,518 INFO L87 Difference]: Start difference. First operand 13 states and 17 transitions. cyclomatic complexity: 5 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2021-11-22 15:19:38,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:19:38,572 INFO L93 Difference]: Finished difference Result 15 states and 19 transitions. [2021-11-22 15:19:38,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:19:38,574 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 19 transitions. [2021-11-22 15:19:38,576 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-11-22 15:19:38,577 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 15 states and 19 transitions. [2021-11-22 15:19:38,578 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2021-11-22 15:19:38,578 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2021-11-22 15:19:38,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 19 transitions. [2021-11-22 15:19:38,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-22 15:19:38,578 INFO L681 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2021-11-22 15:19:38,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 19 transitions. [2021-11-22 15:19:38,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2021-11-22 15:19:38,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 13 states have internal predecessors, (18), 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) [2021-11-22 15:19:38,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 18 transitions. [2021-11-22 15:19:38,586 INFO L704 BuchiCegarLoop]: Abstraction has 14 states and 18 transitions. [2021-11-22 15:19:38,586 INFO L587 BuchiCegarLoop]: Abstraction has 14 states and 18 transitions. [2021-11-22 15:19:38,586 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-11-22 15:19:38,587 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 18 transitions. [2021-11-22 15:19:38,589 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-11-22 15:19:38,589 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-22 15:19:38,589 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-22 15:19:38,590 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-22 15:19:38,590 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:19:38,590 INFO L791 eck$LassoCheckResult]: Stem: 265#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 266#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~l~0#1, main_~m~0#1, main_~a~0#1, main_~b~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~l~0#1;havoc main_~m~0#1;havoc main_~a~0#1;havoc main_~b~0#1;main_~i~0#1 := 0; 273#L15-2 [2021-11-22 15:19:38,590 INFO L793 eck$LassoCheckResult]: Loop: 273#L15-2 assume !!(main_~i~0#1 < 100);main_~a~0#1 := 2 + main_~i~0#1;main_~j~0#1 := 0; 268#L18-2 assume !!(main_~j~0#1 < main_~a~0#1);main_~k~0#1 := 3 + (main_~i~0#1 + main_~j~0#1); 269#L20-2 assume !!(main_~k~0#1 >= 0);main_~b~0#1 := 4 + (main_~i~0#1 + main_~j~0#1 + main_~k~0#1);main_~l~0#1 := 0; 267#L23-2 assume !!(main_~l~0#1 < main_~b~0#1);main_~m~0#1 := 1000 + (main_~i~0#1 + main_~j~0#1 + main_~k~0#1 + main_~l~0#1); 263#L25-2 assume !(main_~m~0#1 >= 0); 264#L25-3 main_~l~0#1 := 1 + main_~l~0#1; 274#L23-2 assume !(main_~l~0#1 < main_~b~0#1); 275#L23-3 main_~k~0#1 := main_~k~0#1 - 1; 276#L20-2 assume !(main_~k~0#1 >= 0); 270#L20-3 main_~j~0#1 := 1 + main_~j~0#1; 271#L18-2 assume !(main_~j~0#1 < main_~a~0#1); 272#L18-3 main_~i~0#1 := 1 + main_~i~0#1; 273#L15-2 [2021-11-22 15:19:38,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:19:38,591 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2021-11-22 15:19:38,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:19:38,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89710211] [2021-11-22 15:19:38,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:19:38,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:19:38,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:19:38,603 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 15:19:38,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:19:38,613 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 15:19:38,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:19:38,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1603093127, now seen corresponding path program 1 times [2021-11-22 15:19:38,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:19:38,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499210249] [2021-11-22 15:19:38,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:19:38,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:19:38,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:19:38,696 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:19:38,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:19:38,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499210249] [2021-11-22 15:19:38,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499210249] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:19:38,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:19:38,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:19:38,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326877337] [2021-11-22 15:19:38,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:19:38,699 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-22 15:19:38,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:19:38,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:19:38,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:19:38,701 INFO L87 Difference]: Start difference. First operand 14 states and 18 transitions. cyclomatic complexity: 5 Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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) [2021-11-22 15:19:38,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:19:38,738 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2021-11-22 15:19:38,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:19:38,742 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7 states and 7 transitions. [2021-11-22 15:19:38,744 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-11-22 15:19:38,744 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7 states to 7 states and 7 transitions. [2021-11-22 15:19:38,744 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-11-22 15:19:38,744 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-11-22 15:19:38,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 7 transitions. [2021-11-22 15:19:38,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-22 15:19:38,745 INFO L681 BuchiCegarLoop]: Abstraction has 7 states and 7 transitions. [2021-11-22 15:19:38,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 7 transitions. [2021-11-22 15:19:38,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-11-22 15:19:38,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.0) internal successors, (7), 6 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) [2021-11-22 15:19:38,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2021-11-22 15:19:38,748 INFO L704 BuchiCegarLoop]: Abstraction has 7 states and 7 transitions. [2021-11-22 15:19:38,748 INFO L587 BuchiCegarLoop]: Abstraction has 7 states and 7 transitions. [2021-11-22 15:19:38,748 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-11-22 15:19:38,748 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 7 transitions. [2021-11-22 15:19:38,749 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-11-22 15:19:38,749 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-22 15:19:38,749 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-22 15:19:38,750 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-11-22 15:19:38,750 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-11-22 15:19:38,750 INFO L791 eck$LassoCheckResult]: Stem: 297#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 298#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~l~0#1, main_~m~0#1, main_~a~0#1, main_~b~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~l~0#1;havoc main_~m~0#1;havoc main_~a~0#1;havoc main_~b~0#1;main_~i~0#1 := 0; 302#L15-2 assume !!(main_~i~0#1 < 100);main_~a~0#1 := 2 + main_~i~0#1;main_~j~0#1 := 0; 299#L18-2 assume !!(main_~j~0#1 < main_~a~0#1);main_~k~0#1 := 3 + (main_~i~0#1 + main_~j~0#1); 300#L20-2 assume !!(main_~k~0#1 >= 0);main_~b~0#1 := 4 + (main_~i~0#1 + main_~j~0#1 + main_~k~0#1);main_~l~0#1 := 0; 301#L23-2 assume !!(main_~l~0#1 < main_~b~0#1);main_~m~0#1 := 1000 + (main_~i~0#1 + main_~j~0#1 + main_~k~0#1 + main_~l~0#1); 296#L25-2 [2021-11-22 15:19:38,750 INFO L793 eck$LassoCheckResult]: Loop: 296#L25-2 assume !!(main_~m~0#1 >= 0);main_~m~0#1 := main_~m~0#1 - 0; 296#L25-2 [2021-11-22 15:19:38,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:19:38,751 INFO L85 PathProgramCache]: Analyzing trace with hash 889698581, now seen corresponding path program 1 times [2021-11-22 15:19:38,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:19:38,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513276774] [2021-11-22 15:19:38,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:19:38,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:19:38,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:19:38,777 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 15:19:38,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:19:38,809 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 15:19:38,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:19:38,810 INFO L85 PathProgramCache]: Analyzing trace with hash 78, now seen corresponding path program 1 times [2021-11-22 15:19:38,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:19:38,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29333650] [2021-11-22 15:19:38,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:19:38,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:19:38,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:19:38,815 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 15:19:38,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:19:38,819 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 15:19:38,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:19:38,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1810852282, now seen corresponding path program 1 times [2021-11-22 15:19:38,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:19:38,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094827792] [2021-11-22 15:19:38,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:19:38,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:19:38,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:19:38,834 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 15:19:38,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:19:38,850 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 15:19:38,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.11 03:19:38 BoogieIcfgContainer [2021-11-22 15:19:38,998 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-22 15:19:38,999 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-22 15:19:38,999 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-22 15:19:39,000 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-22 15:19:39,001 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:19:35" (3/4) ... [2021-11-22 15:19:39,012 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-11-22 15:19:39,083 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b41d3d-c063-4407-bd4a-bd086d2a2e2f/bin/uautomizer-w2VwFs6gM0/witness.graphml [2021-11-22 15:19:39,083 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-22 15:19:39,084 INFO L158 Benchmark]: Toolchain (without parser) took 3812.88ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 76.1MB in the beginning and 68.4MB in the end (delta: 7.7MB). Peak memory consumption was 30.4MB. Max. memory is 16.1GB. [2021-11-22 15:19:39,085 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 113.2MB. Free memory is still 91.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 15:19:39,086 INFO L158 Benchmark]: CACSL2BoogieTranslator took 292.40ms. Allocated memory is still 113.2MB. Free memory was 75.9MB in the beginning and 89.3MB in the end (delta: -13.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-22 15:19:39,086 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.26ms. Allocated memory is still 113.2MB. Free memory was 89.3MB in the beginning and 87.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 15:19:39,089 INFO L158 Benchmark]: Boogie Preprocessor took 21.39ms. Allocated memory is still 113.2MB. Free memory was 87.8MB in the beginning and 87.2MB in the end (delta: 605.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 15:19:39,089 INFO L158 Benchmark]: RCFGBuilder took 354.75ms. Allocated memory is still 113.2MB. Free memory was 87.2MB in the beginning and 78.3MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-22 15:19:39,090 INFO L158 Benchmark]: BuchiAutomizer took 3017.99ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 78.3MB in the beginning and 69.6MB in the end (delta: 8.7MB). Peak memory consumption was 33.2MB. Max. memory is 16.1GB. [2021-11-22 15:19:39,091 INFO L158 Benchmark]: Witness Printer took 84.14ms. Allocated memory is still 136.3MB. Free memory was 69.6MB in the beginning and 68.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 15:19:39,094 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 113.2MB. Free memory is still 91.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 292.40ms. Allocated memory is still 113.2MB. Free memory was 75.9MB in the beginning and 89.3MB in the end (delta: -13.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.26ms. Allocated memory is still 113.2MB. Free memory was 89.3MB in the beginning and 87.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 21.39ms. Allocated memory is still 113.2MB. Free memory was 87.8MB in the beginning and 87.2MB in the end (delta: 605.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 354.75ms. Allocated memory is still 113.2MB. Free memory was 87.2MB in the beginning and 78.3MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 3017.99ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 78.3MB in the beginning and 69.6MB in the end (delta: 8.7MB). Peak memory consumption was 33.2MB. Max. memory is 16.1GB. * Witness Printer took 84.14ms. Allocated memory is still 136.3MB. Free memory was 69.6MB in the beginning and 68.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (4 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * i and consists of 6 locations. 4 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 7 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.9s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 2.1s. Construction of modules took 0.1s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 26 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 14 states and ocurred in iteration 3. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 104 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 103 mSDsluCounter, 91 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 52 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 94 IncrementalHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 39 mSDtfsCounter, 94 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI3 SFLT0 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax166 hnf100 lsp60 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq188 hnf91 smp100 dnf100 smp100 tf106 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 70ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 25]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {j=0, i=0, k=3, m=1003, l=0, a=2, \result=0, b=7} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 25]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] int j; [L8] int k; [L9] int l; [L10] int m; [L11] int a; [L12] int b; [L13] i = 0 [L15] COND TRUE i < 100 [L16] a = i+2 [L17] j = 0 [L18] COND TRUE j < a [L19] k = i+j+3 [L20] COND TRUE k >= 0 [L21] b = i+j+k+4 [L22] l = 0 [L23] COND TRUE l < b [L24] m = i+j+k+l+1000 Loop: [L25] COND TRUE m >= 0 [L26] m = m-0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-11-22 15:19:39,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b41d3d-c063-4407-bd4a-bd086d2a2e2f/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-11-22 15:19:39,358 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b41d3d-c063-4407-bd4a-bd086d2a2e2f/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)