./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/Ex08.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/Ex08.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD --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 e9f5cf3ddf7f2bce97ea02caa876a19793443837e6b09c62b997f759c9b40cc6 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Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:41:35,720 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:41:35,723 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:41:35,765 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:41:35,766 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:41:35,768 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:41:35,770 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:41:35,773 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:41:35,776 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:41:35,778 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:41:35,780 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:41:35,782 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:41:35,782 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:41:35,784 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:41:35,787 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:41:35,789 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:41:35,790 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:41:35,792 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:41:35,795 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:41:35,798 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:41:35,801 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:41:35,803 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:41:35,805 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:41:35,806 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:41:35,811 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:41:35,812 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:41:35,812 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:41:35,814 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:41:35,815 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:41:35,816 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:41:35,817 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:41:35,818 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:41:35,819 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:41:35,821 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:41:35,822 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:41:35,823 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:41:35,829 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:41:35,829 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:41:35,830 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:41:35,831 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:41:35,833 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:41:35,835 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-28 23:41:35,899 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:41:35,899 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:41:35,900 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:41:35,900 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:41:35,901 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:41:35,902 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:41:35,902 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:41:35,902 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 23:41:35,902 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 23:41:35,903 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 23:41:35,903 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 23:41:35,903 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 23:41:35,903 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 23:41:35,907 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:41:35,908 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:41:35,908 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:41:35,908 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:41:35,908 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 23:41:35,909 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 23:41:35,909 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 23:41:35,909 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:41:35,909 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 23:41:35,909 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:41:35,910 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 23:41:35,910 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:41:35,911 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:41:35,913 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:41:35,914 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:41:35,915 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:41:35,916 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 23:41:35,916 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_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e9f5cf3ddf7f2bce97ea02caa876a19793443837e6b09c62b997f759c9b40cc6 [2021-10-28 23:41:36,289 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:41:36,324 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:41:36,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:41:36,329 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:41:36,330 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:41:36,331 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/termination-restricted-15/Ex08.c [2021-10-28 23:41:36,444 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/data/b0d51d4dc/e4f949f6e6e346b3a896db9777f5f331/FLAGe6c6304ac [2021-10-28 23:41:37,000 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:41:37,001 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/sv-benchmarks/c/termination-restricted-15/Ex08.c [2021-10-28 23:41:37,017 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/data/b0d51d4dc/e4f949f6e6e346b3a896db9777f5f331/FLAGe6c6304ac [2021-10-28 23:41:37,363 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/data/b0d51d4dc/e4f949f6e6e346b3a896db9777f5f331 [2021-10-28 23:41:37,366 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:41:37,367 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:41:37,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:41:37,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:41:37,374 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:41:37,375 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:41:37" (1/1) ... [2021-10-28 23:41:37,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19ffc7df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:41:37, skipping insertion in model container [2021-10-28 23:41:37,376 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:41:37" (1/1) ... [2021-10-28 23:41:37,386 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:41:37,405 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:41:37,606 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:41:37,611 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:41:37,627 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:41:37,643 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:41:37,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:41:37 WrapperNode [2021-10-28 23:41:37,644 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:41:37,645 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:41:37,645 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:41:37,646 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:41:37,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:41:37" (1/1) ... [2021-10-28 23:41:37,660 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:41:37" (1/1) ... [2021-10-28 23:41:37,681 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:41:37,682 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:41:37,682 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:41:37,682 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:41:37,693 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:41:37" (1/1) ... [2021-10-28 23:41:37,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:41:37" (1/1) ... [2021-10-28 23:41:37,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:41:37" (1/1) ... [2021-10-28 23:41:37,694 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:41:37" (1/1) ... [2021-10-28 23:41:37,697 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:41:37" (1/1) ... [2021-10-28 23:41:37,701 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:41:37" (1/1) ... [2021-10-28 23:41:37,703 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:41:37" (1/1) ... [2021-10-28 23:41:37,704 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:41:37,705 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:41:37,705 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:41:37,706 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:41:37,707 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:41:37" (1/1) ... [2021-10-28 23:41:37,716 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:37,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:37,751 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:37,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 23:41:37,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:41:37,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:41:37,991 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:41:37,991 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-28 23:41:37,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:41:37 BoogieIcfgContainer [2021-10-28 23:41:37,994 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:41:37,995 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 23:41:37,995 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 23:41:37,999 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 23:41:38,000 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:41:38,001 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 11:41:37" (1/3) ... [2021-10-28 23:41:38,002 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3e2b67b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:41:38, skipping insertion in model container [2021-10-28 23:41:38,002 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:41:38,003 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:41:37" (2/3) ... [2021-10-28 23:41:38,003 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3e2b67b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:41:38, skipping insertion in model container [2021-10-28 23:41:38,003 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:41:38,004 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:41:37" (3/3) ... [2021-10-28 23:41:38,005 INFO L389 chiAutomizerObserver]: Analyzing ICFG Ex08.c [2021-10-28 23:41:38,065 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 23:41:38,065 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 23:41:38,065 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 23:41:38,065 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 23:41:38,066 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 23:41:38,066 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 23:41:38,066 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 23:41:38,066 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 23:41:38,088 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 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) [2021-10-28 23:41:38,118 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-28 23:41:38,118 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:41:38,136 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:41:38,143 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-28 23:41:38,152 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-28 23:41:38,153 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 23:41:38,153 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 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) [2021-10-28 23:41:38,155 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-28 23:41:38,155 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:41:38,156 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:41:38,156 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-28 23:41:38,156 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-28 23:41:38,164 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 6#L18-1true [2021-10-28 23:41:38,165 INFO L793 eck$LassoCheckResult]: Loop: 6#L18-1true assume !!(main_~i~0 > 0); 10#L12true assume 1 == main_~i~0;main_~up~0 := 1; 3#L12-2true assume 10 == main_~i~0;main_~up~0 := 0; 8#L15-1true assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 6#L18-1true [2021-10-28 23:41:38,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:41:38,185 INFO L85 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-10-28 23:41:38,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:41:38,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699637403] [2021-10-28 23:41:38,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:41:38,207 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:41:38,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:41:38,330 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:41:38,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:41:38,350 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:41:38,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:41:38,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1234538, now seen corresponding path program 1 times [2021-10-28 23:41:38,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:41:38,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040795035] [2021-10-28 23:41:38,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:41:38,357 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:41:38,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:41:38,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:41:38,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:41:38,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040795035] [2021-10-28 23:41:38,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040795035] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:41:38,445 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:41:38,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:41:38,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570814840] [2021-10-28 23:41:38,452 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:41:38,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:41:38,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:41:38,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:41:38,474 INFO L87 Difference]: Start difference. First operand has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:41:38,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:41:38,523 INFO L93 Difference]: Finished difference Result 13 states and 19 transitions. [2021-10-28 23:41:38,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:41:38,526 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 19 transitions. [2021-10-28 23:41:38,528 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-10-28 23:41:38,533 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 9 states and 14 transitions. [2021-10-28 23:41:38,534 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2021-10-28 23:41:38,535 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2021-10-28 23:41:38,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 14 transitions. [2021-10-28 23:41:38,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:41:38,536 INFO L681 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2021-10-28 23:41:38,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 14 transitions. [2021-10-28 23:41:38,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-28 23:41:38,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:41:38,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 14 transitions. [2021-10-28 23:41:38,571 INFO L704 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2021-10-28 23:41:38,571 INFO L587 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2021-10-28 23:41:38,571 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 23:41:38,572 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 14 transitions. [2021-10-28 23:41:38,573 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-10-28 23:41:38,573 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:41:38,573 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:41:38,574 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-28 23:41:38,574 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-28 23:41:38,574 INFO L791 eck$LassoCheckResult]: Stem: 33#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 34#L18-1 [2021-10-28 23:41:38,574 INFO L793 eck$LassoCheckResult]: Loop: 34#L18-1 assume !!(main_~i~0 > 0); 39#L12 assume !(1 == main_~i~0); 37#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 38#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 34#L18-1 [2021-10-28 23:41:38,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:41:38,576 INFO L85 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2021-10-28 23:41:38,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:41:38,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537182109] [2021-10-28 23:41:38,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:41:38,577 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:41:38,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:41:38,584 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:41:38,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:41:38,589 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:41:38,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:41:38,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1236460, now seen corresponding path program 1 times [2021-10-28 23:41:38,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:41:38,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083441964] [2021-10-28 23:41:38,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:41:38,592 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:41:38,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:41:38,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:41:38,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:41:38,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083441964] [2021-10-28 23:41:38,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083441964] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:41:38,635 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:41:38,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 23:41:38,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706748213] [2021-10-28 23:41:38,636 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:41:38,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:41:38,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:41:38,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:41:38,638 INFO L87 Difference]: Start difference. First operand 9 states and 14 transitions. cyclomatic complexity: 6 Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:41:38,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:41:38,665 INFO L93 Difference]: Finished difference Result 13 states and 20 transitions. [2021-10-28 23:41:38,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:41:38,667 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 20 transitions. [2021-10-28 23:41:38,668 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-10-28 23:41:38,669 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 13 states and 20 transitions. [2021-10-28 23:41:38,669 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2021-10-28 23:41:38,669 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2021-10-28 23:41:38,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 20 transitions. [2021-10-28 23:41:38,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:41:38,670 INFO L681 BuchiCegarLoop]: Abstraction has 13 states and 20 transitions. [2021-10-28 23:41:38,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 20 transitions. [2021-10-28 23:41:38,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-28 23:41:38,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 12 states have internal predecessors, (20), 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) [2021-10-28 23:41:38,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 20 transitions. [2021-10-28 23:41:38,673 INFO L704 BuchiCegarLoop]: Abstraction has 13 states and 20 transitions. [2021-10-28 23:41:38,674 INFO L587 BuchiCegarLoop]: Abstraction has 13 states and 20 transitions. [2021-10-28 23:41:38,674 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 23:41:38,674 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 20 transitions. [2021-10-28 23:41:38,675 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-10-28 23:41:38,675 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:41:38,675 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:41:38,676 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-28 23:41:38,676 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-28 23:41:38,676 INFO L791 eck$LassoCheckResult]: Stem: 61#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 62#L18-1 [2021-10-28 23:41:38,676 INFO L793 eck$LassoCheckResult]: Loop: 62#L18-1 assume !!(main_~i~0 > 0); 71#L12 assume !(1 == main_~i~0); 70#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 65#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 62#L18-1 [2021-10-28 23:41:38,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:41:38,677 INFO L85 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 3 times [2021-10-28 23:41:38,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:41:38,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49920314] [2021-10-28 23:41:38,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:41:38,678 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:41:38,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:41:38,684 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:41:38,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:41:38,689 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:41:38,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:41:38,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1236462, now seen corresponding path program 1 times [2021-10-28 23:41:38,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:41:38,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626115158] [2021-10-28 23:41:38,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:41:38,692 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:41:38,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:41:38,702 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:41:38,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:41:38,709 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:41:38,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:41:38,710 INFO L85 PathProgramCache]: Analyzing trace with hash 29865613, now seen corresponding path program 1 times [2021-10-28 23:41:38,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:41:38,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794890563] [2021-10-28 23:41:38,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:41:38,711 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:41:38,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:41:38,719 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:41:38,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:41:38,732 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:41:38,833 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:41:38,834 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:41:38,835 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:41:38,835 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:41:38,835 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:41:38,835 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:38,836 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:41:38,836 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:41:38,836 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration3_Loop [2021-10-28 23:41:38,836 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:41:38,837 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:41:38,856 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:38,864 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:38,869 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:38,873 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:38,965 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:41:38,966 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:41:38,970 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:38,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:38,973 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:38,981 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:41:38,981 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:41:39,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-28 23:41:39,018 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:41:39,019 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: [] [2021-10-28 23:41:39,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:39,093 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:39,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:39,096 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:39,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-28 23:41:39,109 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:41:39,109 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:41:39,130 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:41:39,131 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: [] [2021-10-28 23:41:39,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:39,159 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:39,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:39,161 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:39,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-28 23:41:39,164 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:41:39,164 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:41:39,180 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:41:39,180 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=0} Honda state: {ULTIMATE.start_main_~up~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:41:39,208 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2021-10-28 23:41:39,209 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:39,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:39,210 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:39,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-28 23:41:39,213 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:41:39,213 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:41:39,249 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2021-10-28 23:41:39,250 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:39,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:39,251 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:39,261 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:41:39,276 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:41:39,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-28 23:41:39,311 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 23:41:39,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:39,358 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:41:39,358 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:41:39,358 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:41:39,358 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:41:39,359 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:41:39,359 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:39,359 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:41:39,359 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:41:39,359 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration3_Loop [2021-10-28 23:41:39,359 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:41:39,360 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:41:39,362 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:39,367 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:39,373 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:39,377 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:39,463 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:41:39,469 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:41:39,471 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:39,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:39,476 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:39,493 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 [2021-10-28 23:41:39,508 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:41:39,508 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:41:39,508 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:41:39,509 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:41:39,524 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:41:39,524 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:41:39,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-28 23:41:39,544 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:41:39,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:39,593 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:39,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:39,595 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:39,603 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 [2021-10-28 23:41:39,614 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:41:39,615 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:41:39,615 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:41:39,615 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:41:39,623 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:41:39,623 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:41:39,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-28 23:41:39,643 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:41:39,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:39,689 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:39,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:39,691 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:39,698 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 [2021-10-28 23:41:39,709 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:41:39,709 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:41:39,710 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:41:39,710 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:41:39,710 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:41:39,712 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:41:39,712 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:41:39,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-28 23:41:39,731 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:41:39,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:39,763 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:39,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:39,765 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:39,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-28 23:41:39,767 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 [2021-10-28 23:41:39,776 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:41:39,776 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:41:39,776 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:41:39,776 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:41:39,776 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:41:39,779 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:41:39,779 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:41:39,793 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:41:39,800 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 23:41:39,800 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 23:41:39,802 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:39,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:39,812 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:39,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-28 23:41:39,844 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:41:39,844 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 23:41:39,844 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:41:39,845 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-28 23:41:39,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:39,882 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 23:41:39,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:41:39,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:41:39,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:41:39,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:41:39,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:41:39,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:41:39,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:41:40,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:41:40,005 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 23:41:40,006 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 20 transitions. cyclomatic complexity: 8 Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 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) [2021-10-28 23:41:40,072 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 20 transitions. cyclomatic complexity: 8. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 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 34 states and 50 transitions. Complement of second has 7 states. [2021-10-28 23:41:40,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 23:41:40,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 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) [2021-10-28 23:41:40,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2021-10-28 23:41:40,076 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 1 letters. Loop has 4 letters. [2021-10-28 23:41:40,078 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:41:40,078 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 4 letters. [2021-10-28 23:41:40,078 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:41:40,078 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 1 letters. Loop has 8 letters. [2021-10-28 23:41:40,079 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:41:40,079 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 50 transitions. [2021-10-28 23:41:40,081 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 20 [2021-10-28 23:41:40,083 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 29 states and 43 transitions. [2021-10-28 23:41:40,083 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2021-10-28 23:41:40,084 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2021-10-28 23:41:40,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 43 transitions. [2021-10-28 23:41:40,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:41:40,084 INFO L681 BuchiCegarLoop]: Abstraction has 29 states and 43 transitions. [2021-10-28 23:41:40,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 43 transitions. [2021-10-28 23:41:40,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2021-10-28 23:41:40,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 23 states have internal predecessors, (35), 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) [2021-10-28 23:41:40,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 35 transitions. [2021-10-28 23:41:40,089 INFO L704 BuchiCegarLoop]: Abstraction has 24 states and 35 transitions. [2021-10-28 23:41:40,089 INFO L587 BuchiCegarLoop]: Abstraction has 24 states and 35 transitions. [2021-10-28 23:41:40,089 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 23:41:40,090 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 35 transitions. [2021-10-28 23:41:40,091 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2021-10-28 23:41:40,091 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:41:40,091 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:41:40,092 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 23:41:40,092 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-28 23:41:40,092 INFO L791 eck$LassoCheckResult]: Stem: 154#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 155#L18-1 assume !!(main_~i~0 > 0); 151#L12 [2021-10-28 23:41:40,092 INFO L793 eck$LassoCheckResult]: Loop: 151#L12 assume !(1 == main_~i~0); 166#L12-2 assume !(10 == main_~i~0); 156#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 150#L18-1 assume !!(main_~i~0 > 0); 151#L12 [2021-10-28 23:41:40,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:41:40,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2021-10-28 23:41:40,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:41:40,094 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989138517] [2021-10-28 23:41:40,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:41:40,094 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:41:40,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:41:40,102 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:41:40,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:41:40,106 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:41:40,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:41:40,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1391414, now seen corresponding path program 1 times [2021-10-28 23:41:40,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:41:40,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672246087] [2021-10-28 23:41:40,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:41:40,108 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:41:40,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:41:40,115 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:41:40,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:41:40,120 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:41:40,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:41:40,121 INFO L85 PathProgramCache]: Analyzing trace with hash 925835935, now seen corresponding path program 1 times [2021-10-28 23:41:40,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:41:40,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607157194] [2021-10-28 23:41:40,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:41:40,122 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:41:40,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:41:40,129 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:41:40,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:41:40,136 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:41:40,176 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:41:40,177 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:41:40,177 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:41:40,177 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:41:40,177 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:41:40,177 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:40,177 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:41:40,177 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:41:40,178 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration4_Loop [2021-10-28 23:41:40,178 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:41:40,178 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:41:40,180 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:40,183 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:40,187 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:40,191 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:40,300 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:41:40,300 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:41:40,301 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:40,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:40,304 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:40,312 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:41:40,312 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:41:40,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-28 23:41:40,335 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:41:40,335 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:41:40,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:40,381 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:40,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:40,382 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:40,390 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:41:40,390 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:41:40,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-28 23:41:40,415 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:41:40,416 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:41:40,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:40,462 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:40,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:40,464 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:40,472 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:41:40,473 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:41:40,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-28 23:41:40,504 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:41:40,504 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=4} Honda state: {ULTIMATE.start_main_~up~0=4} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:41:40,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:40,531 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:40,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:40,533 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:40,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-28 23:41:40,541 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:41:40,541 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:41:40,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:40,581 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:40,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:40,582 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:40,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-28 23:41:40,584 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:41:40,584 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:41:40,699 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 23:41:40,705 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2021-10-28 23:41:40,705 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:41:40,706 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:41:40,706 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:41:40,706 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:41:40,706 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:41:40,706 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:40,706 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:41:40,706 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:41:40,706 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration4_Loop [2021-10-28 23:41:40,706 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:41:40,707 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:41:40,709 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:40,729 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:40,733 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:40,737 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:40,872 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:41:40,872 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:41:40,873 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:40,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:40,874 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:40,881 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 [2021-10-28 23:41:40,893 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:41:40,893 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:41:40,893 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:41:40,893 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:41:40,900 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:41:40,901 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:41:40,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-28 23:41:40,916 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:41:40,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:40,964 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:40,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:40,966 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:40,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-10-28 23:41:40,973 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 [2021-10-28 23:41:40,984 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:41:40,984 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:41:40,985 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:41:40,985 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-28 23:41:40,985 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:41:40,986 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-28 23:41:40,986 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:41:41,011 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:41:41,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:41,056 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:41,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:41,058 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:41,065 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 [2021-10-28 23:41:41,077 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:41:41,077 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:41:41,077 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:41:41,077 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:41:41,092 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:41:41,092 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:41:41,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-10-28 23:41:41,116 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:41:41,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:41,167 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:41,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:41,168 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:41,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-10-28 23:41:41,182 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 [2021-10-28 23:41:41,195 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:41:41,195 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:41:41,196 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:41:41,196 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-28 23:41:41,196 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:41:41,198 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-28 23:41:41,198 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:41:41,217 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:41:41,220 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-28 23:41:41,221 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 23:41:41,221 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:41,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:41,223 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:41,225 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:41:41,225 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 23:41:41,225 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:41:41,225 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-28 23:41:41,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-10-28 23:41:41,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:41,273 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 23:41:41,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:41:41,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:41:41,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:41:41,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:41:41,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:41:41,303 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:41:41,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:41:41,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:41:41,370 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 23:41:41,371 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 35 transitions. cyclomatic complexity: 14 Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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) [2021-10-28 23:41:41,425 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 35 transitions. cyclomatic complexity: 14. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 40 states and 58 transitions. Complement of second has 7 states. [2021-10-28 23:41:41,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 23:41:41,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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) [2021-10-28 23:41:41,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2021-10-28 23:41:41,428 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 4 letters. [2021-10-28 23:41:41,429 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:41:41,429 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 4 letters. [2021-10-28 23:41:41,430 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:41:41,431 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 8 letters. [2021-10-28 23:41:41,431 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:41:41,432 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 58 transitions. [2021-10-28 23:41:41,438 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-10-28 23:41:41,439 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 31 states and 48 transitions. [2021-10-28 23:41:41,439 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2021-10-28 23:41:41,440 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-10-28 23:41:41,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 48 transitions. [2021-10-28 23:41:41,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:41:41,440 INFO L681 BuchiCegarLoop]: Abstraction has 31 states and 48 transitions. [2021-10-28 23:41:41,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 48 transitions. [2021-10-28 23:41:41,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-10-28 23:41:41,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 30 states have internal predecessors, (48), 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) [2021-10-28 23:41:41,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 48 transitions. [2021-10-28 23:41:41,445 INFO L704 BuchiCegarLoop]: Abstraction has 31 states and 48 transitions. [2021-10-28 23:41:41,445 INFO L587 BuchiCegarLoop]: Abstraction has 31 states and 48 transitions. [2021-10-28 23:41:41,446 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-28 23:41:41,446 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 48 transitions. [2021-10-28 23:41:41,447 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-10-28 23:41:41,447 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:41:41,447 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:41:41,448 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-10-28 23:41:41,448 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-28 23:41:41,448 INFO L791 eck$LassoCheckResult]: Stem: 255#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 256#L18-1 assume !!(main_~i~0 > 0); 265#L12 assume 1 == main_~i~0;main_~up~0 := 1; 267#L12-2 assume !(10 == main_~i~0); 272#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 273#L18-1 [2021-10-28 23:41:41,449 INFO L793 eck$LassoCheckResult]: Loop: 273#L18-1 assume !!(main_~i~0 > 0); 280#L12 assume !(1 == main_~i~0); 274#L12-2 assume !(10 == main_~i~0); 275#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 273#L18-1 [2021-10-28 23:41:41,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:41:41,449 INFO L85 PathProgramCache]: Analyzing trace with hash 29863751, now seen corresponding path program 1 times [2021-10-28 23:41:41,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:41:41,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110350011] [2021-10-28 23:41:41,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:41:41,450 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:41:41,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:41:41,467 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:41:41,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:41:41,477 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:41:41,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:41:41,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1236522, now seen corresponding path program 1 times [2021-10-28 23:41:41,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:41:41,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136576990] [2021-10-28 23:41:41,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:41:41,479 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:41:41,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:41:41,484 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:41:41,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:41:41,490 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:41:41,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:41:41,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1816492656, now seen corresponding path program 1 times [2021-10-28 23:41:41,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:41:41,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890731273] [2021-10-28 23:41:41,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:41:41,492 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:41:41,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:41:41,500 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:41:41,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:41:41,507 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:41:41,546 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:41:41,547 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:41:41,547 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:41:41,547 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:41:41,547 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:41:41,547 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:41,548 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:41:41,548 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:41:41,548 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration5_Loop [2021-10-28 23:41:41,548 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:41:41,548 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:41:41,562 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:41,567 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:41,570 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:41,579 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:41,688 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:41:41,688 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:41:41,689 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:41,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:41,690 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:41,701 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:41:41,701 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:41:41,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-10-28 23:41:41,728 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:41:41,729 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=1} Honda state: {ULTIMATE.start_main_~up~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:41:41,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:41,769 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:41,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:41,771 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:41,774 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:41:41,775 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:41:41,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-10-28 23:41:41,796 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:41:41,796 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:41:41,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:41,838 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:41,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:41,840 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:41,845 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:41:41,845 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:41:41,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-10-28 23:41:41,893 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2021-10-28 23:41:41,893 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:41,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:41,895 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:41,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-10-28 23:41:41,896 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:41:41,897 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:41:41,937 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:41:41,937 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~i~0=11} Honda state: {ULTIMATE.start_main_~i~0=11} Generalized eigenvectors: [{ULTIMATE.start_main_~i~0=1}, {ULTIMATE.start_main_~i~0=0}, {ULTIMATE.start_main_~i~0=0}] Lambdas: [1, 31, 31] Nus: [0, 0] [2021-10-28 23:41:41,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:41,983 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:41,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:41,984 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:41,991 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:41:41,991 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:41:42,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-10-28 23:41:42,016 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:41:42,016 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:41:42,047 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2021-10-28 23:41:42,113 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:41:42,113 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:41:42,113 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:41:42,113 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:41:42,113 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:41:42,113 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:42,114 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:41:42,114 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:41:42,114 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration5_Lasso [2021-10-28 23:41:42,114 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:41:42,114 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:41:42,116 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:42,119 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:42,121 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:42,125 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:42,129 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:42,140 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:42,279 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:41:42,279 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:41:42,279 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:42,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:42,284 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:42,289 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:41:42,289 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:41:42,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-10-28 23:41:42,312 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:41:42,312 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:41:42,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:42,360 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:42,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:42,361 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:42,364 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:41:42,364 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:41:42,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-10-28 23:41:42,374 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:41:42,374 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:41:42,400 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2021-10-28 23:41:42,401 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:42,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:42,402 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:42,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-10-28 23:41:42,404 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:41:42,405 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:41:42,421 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:41:42,421 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_6=0} Honda state: {v_rep~unnamed0~0~false_6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:41:42,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:42,463 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:42,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:42,465 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:42,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-10-28 23:41:42,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:42,548 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:41:42,548 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:41:42,570 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:41:42,570 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=0} Honda state: {ULTIMATE.start_main_~up~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:41:42,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:42,616 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2021-10-28 23:41:42,616 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:42,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:42,618 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:42,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-10-28 23:41:42,622 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:41:42,622 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:41:42,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:42,709 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:42,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:42,710 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:42,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-10-28 23:41:42,714 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:41:42,715 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:41:42,781 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 23:41:42,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:42,787 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:41:42,788 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:41:42,788 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:41:42,788 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:41:42,788 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:41:42,788 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:42,788 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:41:42,788 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:41:42,788 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration5_Lasso [2021-10-28 23:41:42,788 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:41:42,788 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:41:42,790 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:42,794 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:42,797 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:42,800 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:42,819 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:42,831 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:42,949 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:41:42,949 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:41:42,950 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:42,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:42,951 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:42,961 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 [2021-10-28 23:41:42,972 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:41:42,972 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:41:42,973 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:41:42,973 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:41:42,973 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:41:42,974 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:41:42,974 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:41:42,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-10-28 23:41:42,983 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:41:43,015 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Ended with exit code 0 [2021-10-28 23:41:43,016 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:43,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:43,017 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:43,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-10-28 23:41:43,019 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 [2021-10-28 23:41:43,028 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:41:43,029 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:41:43,029 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:41:43,029 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:41:43,029 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:41:43,029 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:41:43,029 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:41:43,059 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:41:43,087 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Ended with exit code 0 [2021-10-28 23:41:43,087 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:43,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:43,088 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:43,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-10-28 23:41:43,100 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 [2021-10-28 23:41:43,108 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:41:43,108 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:41:43,108 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:41:43,108 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:41:43,111 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:41:43,111 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:41:43,135 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:41:43,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:43,173 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:43,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:43,176 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:43,180 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 [2021-10-28 23:41:43,191 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:41:43,191 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:41:43,191 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:41:43,192 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:41:43,195 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:41:43,195 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:41:43,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-10-28 23:41:43,207 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:41:43,242 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2021-10-28 23:41:43,242 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:43,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:43,243 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:43,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-10-28 23:41:43,256 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 [2021-10-28 23:41:43,267 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:41:43,268 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:41:43,268 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-28 23:41:43,268 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:41:43,306 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2021-10-28 23:41:43,306 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2021-10-28 23:41:43,347 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:41:43,389 INFO L443 ModelExtractionUtils]: Simplification made 8 calls to the SMT solver. [2021-10-28 23:41:43,389 INFO L444 ModelExtractionUtils]: 3 out of 11 variables were initially zero. Simplification set additionally 3 variables to zero. [2021-10-28 23:41:43,390 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:43,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:43,396 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:43,398 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:41:43,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-10-28 23:41:43,434 INFO L438 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2021-10-28 23:41:43,434 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:41:43,435 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 21 Supporting invariants [-1*ULTIMATE.start_main_~i~0 + 10 >= 0] [2021-10-28 23:41:43,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:43,483 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2021-10-28 23:41:43,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:41:43,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:41:43,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:41:43,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:41:43,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:41:43,583 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 23:41:43,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:41:43,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:41:43,671 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2021-10-28 23:41:43,671 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 48 transitions. cyclomatic complexity: 21 Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 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) [2021-10-28 23:41:43,769 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 48 transitions. cyclomatic complexity: 21. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 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) Result 45 states and 67 transitions. Complement of second has 8 states. [2021-10-28 23:41:43,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 23:41:43,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 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) [2021-10-28 23:41:43,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 20 transitions. [2021-10-28 23:41:43,772 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 5 letters. Loop has 4 letters. [2021-10-28 23:41:43,772 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:41:43,772 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 9 letters. Loop has 4 letters. [2021-10-28 23:41:43,773 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:41:43,773 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 5 letters. Loop has 8 letters. [2021-10-28 23:41:43,774 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:41:43,774 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 67 transitions. [2021-10-28 23:41:43,778 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-10-28 23:41:43,780 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 44 states and 66 transitions. [2021-10-28 23:41:43,780 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2021-10-28 23:41:43,781 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2021-10-28 23:41:43,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 66 transitions. [2021-10-28 23:41:43,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:41:43,782 INFO L681 BuchiCegarLoop]: Abstraction has 44 states and 66 transitions. [2021-10-28 23:41:43,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states and 66 transitions. [2021-10-28 23:41:43,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2021-10-28 23:41:43,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 41 states have (on average 1.5365853658536586) internal successors, (63), 40 states have internal predecessors, (63), 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) [2021-10-28 23:41:43,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 63 transitions. [2021-10-28 23:41:43,798 INFO L704 BuchiCegarLoop]: Abstraction has 41 states and 63 transitions. [2021-10-28 23:41:43,798 INFO L587 BuchiCegarLoop]: Abstraction has 41 states and 63 transitions. [2021-10-28 23:41:43,798 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-28 23:41:43,798 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 41 states and 63 transitions. [2021-10-28 23:41:43,804 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-10-28 23:41:43,805 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:41:43,805 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:41:43,808 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1] [2021-10-28 23:41:43,808 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-28 23:41:43,808 INFO L791 eck$LassoCheckResult]: Stem: 394#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 395#L18-1 assume !!(main_~i~0 > 0); 411#L12 assume 1 == main_~i~0;main_~up~0 := 1; 407#L12-2 assume !(10 == main_~i~0); 406#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 405#L18-1 assume !!(main_~i~0 > 0); 402#L12 assume !(1 == main_~i~0); 403#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 428#L15-1 [2021-10-28 23:41:43,808 INFO L793 eck$LassoCheckResult]: Loop: 428#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 427#L18-1 assume !!(main_~i~0 > 0); 424#L12 assume !(1 == main_~i~0); 425#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 428#L15-1 [2021-10-28 23:41:43,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:41:43,809 INFO L85 PathProgramCache]: Analyzing trace with hash 612785863, now seen corresponding path program 1 times [2021-10-28 23:41:43,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:41:43,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977345808] [2021-10-28 23:41:43,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:41:43,810 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:41:43,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:41:43,867 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:41:43,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:41:43,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977345808] [2021-10-28 23:41:43,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977345808] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:41:43,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496917781] [2021-10-28 23:41:43,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:41:43,871 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:41:43,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:43,873 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:41:43,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-10-28 23:41:43,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:41:43,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 23:41:43,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:41:43,949 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:41:43,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496917781] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:41:43,950 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:41:43,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-10-28 23:41:43,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868402893] [2021-10-28 23:41:43,951 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 23:41:43,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:41:43,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1737972, now seen corresponding path program 2 times [2021-10-28 23:41:43,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:41:43,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777306301] [2021-10-28 23:41:43,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:41:43,954 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:41:43,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:41:43,978 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:41:43,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:41:43,989 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:41:44,023 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:41:44,023 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:41:44,023 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:41:44,023 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:41:44,024 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:41:44,024 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:44,024 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:41:44,024 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:41:44,024 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration6_Loop [2021-10-28 23:41:44,024 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:41:44,025 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:41:44,026 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:44,031 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:44,034 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:44,036 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:44,094 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:41:44,094 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:41:44,094 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:44,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:44,095 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:44,109 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:41:44,109 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:41:44,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-10-28 23:41:44,132 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:41:44,132 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=0} Honda state: {ULTIMATE.start_main_~up~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:41:44,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:44,166 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:44,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:44,167 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:44,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-10-28 23:41:44,169 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:41:44,169 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:41:44,185 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:41:44,185 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_8=1} Honda state: {v_rep~unnamed0~0~true_8=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:41:44,209 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2021-10-28 23:41:44,210 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:44,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:44,211 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:44,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-10-28 23:41:44,213 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:41:44,213 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:41:44,228 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:41:44,228 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_8=0} Honda state: {v_rep~unnamed0~0~false_8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:41:44,253 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Ended with exit code 0 [2021-10-28 23:41:44,254 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:44,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:44,255 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:44,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-10-28 23:41:44,256 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:41:44,256 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:41:44,290 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Ended with exit code 0 [2021-10-28 23:41:44,291 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:44,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:44,292 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:44,297 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:41:44,297 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:41:44,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-10-28 23:41:44,436 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 23:41:44,445 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Ended with exit code 0 [2021-10-28 23:41:44,445 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:41:44,446 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:41:44,446 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:41:44,446 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:41:44,446 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:41:44,446 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:44,446 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:41:44,446 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:41:44,446 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration6_Loop [2021-10-28 23:41:44,446 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:41:44,446 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:41:44,448 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:44,455 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:44,458 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:44,462 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:44,542 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:41:44,543 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:41:44,543 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:44,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:44,544 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:44,552 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 [2021-10-28 23:41:44,564 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:41:44,564 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:41:44,564 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:41:44,564 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-28 23:41:44,564 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:41:44,566 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-28 23:41:44,566 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:41:44,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2021-10-28 23:41:44,583 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:41:44,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:44,629 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:44,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:44,631 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:44,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-10-28 23:41:44,635 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 [2021-10-28 23:41:44,644 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:41:44,644 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:41:44,644 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:41:44,645 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:41:44,647 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:41:44,647 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:41:44,670 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:41:44,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:44,712 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:44,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:44,714 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:44,720 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 [2021-10-28 23:41:44,731 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:41:44,731 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:41:44,732 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:41:44,732 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:41:44,734 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:41:44,734 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:41:44,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-10-28 23:41:44,747 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:41:44,773 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Ended with exit code 0 [2021-10-28 23:41:44,774 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:44,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:44,775 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:44,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-10-28 23:41:44,776 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 [2021-10-28 23:41:44,783 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:41:44,783 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:41:44,784 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:41:44,784 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:41:44,784 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:41:44,784 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:41:44,784 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:41:44,786 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:41:44,789 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 23:41:44,789 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 23:41:44,789 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:44,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:44,790 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:44,792 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:41:44,792 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 23:41:44,792 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:41:44,793 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-28 23:41:44,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-10-28 23:41:44,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:44,832 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 23:41:44,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:41:44,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:41:44,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:41:44,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:41:44,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:41:44,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:41:44,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:41:44,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:41:44,903 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 23:41:44,903 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 41 states and 63 transitions. cyclomatic complexity: 27 Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:41:44,932 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 41 states and 63 transitions. cyclomatic complexity: 27. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 104 states and 159 transitions. Complement of second has 7 states. [2021-10-28 23:41:44,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 23:41:44,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:41:44,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2021-10-28 23:41:44,934 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 8 letters. Loop has 4 letters. [2021-10-28 23:41:44,934 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:41:44,934 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 12 letters. Loop has 4 letters. [2021-10-28 23:41:44,934 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:41:44,934 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 8 letters. Loop has 8 letters. [2021-10-28 23:41:44,935 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:41:44,935 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 104 states and 159 transitions. [2021-10-28 23:41:44,938 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-10-28 23:41:44,939 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 104 states to 86 states and 132 transitions. [2021-10-28 23:41:44,939 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2021-10-28 23:41:44,940 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2021-10-28 23:41:44,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 86 states and 132 transitions. [2021-10-28 23:41:44,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:41:44,940 INFO L681 BuchiCegarLoop]: Abstraction has 86 states and 132 transitions. [2021-10-28 23:41:44,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states and 132 transitions. [2021-10-28 23:41:44,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 81. [2021-10-28 23:41:44,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 81 states have (on average 1.5555555555555556) internal successors, (126), 80 states have internal predecessors, (126), 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) [2021-10-28 23:41:44,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 126 transitions. [2021-10-28 23:41:44,947 INFO L704 BuchiCegarLoop]: Abstraction has 81 states and 126 transitions. [2021-10-28 23:41:44,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:41:44,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:41:44,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:41:44,948 INFO L87 Difference]: Start difference. First operand 81 states and 126 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:41:44,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:41:44,971 INFO L93 Difference]: Finished difference Result 115 states and 174 transitions. [2021-10-28 23:41:44,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:41:44,972 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 115 states and 174 transitions. [2021-10-28 23:41:44,973 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 36 [2021-10-28 23:41:44,975 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 115 states to 115 states and 174 transitions. [2021-10-28 23:41:44,975 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 65 [2021-10-28 23:41:44,976 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 65 [2021-10-28 23:41:44,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 115 states and 174 transitions. [2021-10-28 23:41:44,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:41:44,976 INFO L681 BuchiCegarLoop]: Abstraction has 115 states and 174 transitions. [2021-10-28 23:41:44,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states and 174 transitions. [2021-10-28 23:41:44,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 97. [2021-10-28 23:41:44,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 97 states have (on average 1.5463917525773196) internal successors, (150), 96 states have internal predecessors, (150), 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) [2021-10-28 23:41:44,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 150 transitions. [2021-10-28 23:41:44,984 INFO L704 BuchiCegarLoop]: Abstraction has 97 states and 150 transitions. [2021-10-28 23:41:44,984 INFO L587 BuchiCegarLoop]: Abstraction has 97 states and 150 transitions. [2021-10-28 23:41:44,984 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-10-28 23:41:44,984 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 97 states and 150 transitions. [2021-10-28 23:41:44,986 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 28 [2021-10-28 23:41:44,986 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:41:44,986 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:41:44,986 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2021-10-28 23:41:44,987 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-28 23:41:44,987 INFO L791 eck$LassoCheckResult]: Stem: 821#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 822#L18-1 assume !!(main_~i~0 > 0); 834#L12 assume 1 == main_~i~0;main_~up~0 := 1; 830#L12-2 assume !(10 == main_~i~0); 828#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 829#L18-1 assume !!(main_~i~0 > 0); 881#L12 assume !(1 == main_~i~0); 875#L12-2 assume !(10 == main_~i~0); 890#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 871#L18-1 [2021-10-28 23:41:44,987 INFO L793 eck$LassoCheckResult]: Loop: 871#L18-1 assume !!(main_~i~0 > 0); 880#L12 assume 1 == main_~i~0;main_~up~0 := 1; 863#L12-2 assume !(10 == main_~i~0); 877#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 871#L18-1 [2021-10-28 23:41:44,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:41:44,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1816492658, now seen corresponding path program 1 times [2021-10-28 23:41:44,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:41:44,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16267608] [2021-10-28 23:41:44,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:41:44,988 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:41:44,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:41:45,005 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-28 23:41:45,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:41:45,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16267608] [2021-10-28 23:41:45,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16267608] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:41:45,006 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:41:45,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 23:41:45,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391316403] [2021-10-28 23:41:45,007 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 23:41:45,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:41:45,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1234602, now seen corresponding path program 1 times [2021-10-28 23:41:45,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:41:45,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306551762] [2021-10-28 23:41:45,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:41:45,008 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:41:45,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:41:45,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:41:45,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:41:45,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306551762] [2021-10-28 23:41:45,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306551762] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:41:45,020 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:41:45,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 23:41:45,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812149242] [2021-10-28 23:41:45,021 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:41:45,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:41:45,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:41:45,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:41:45,022 INFO L87 Difference]: Start difference. First operand 97 states and 150 transitions. cyclomatic complexity: 64 Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:41:45,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:41:45,032 INFO L93 Difference]: Finished difference Result 77 states and 103 transitions. [2021-10-28 23:41:45,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:41:45,033 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 77 states and 103 transitions. [2021-10-28 23:41:45,034 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2021-10-28 23:41:45,035 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 77 states to 63 states and 81 transitions. [2021-10-28 23:41:45,035 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2021-10-28 23:41:45,036 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 31 [2021-10-28 23:41:45,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 81 transitions. [2021-10-28 23:41:45,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:41:45,036 INFO L681 BuchiCegarLoop]: Abstraction has 63 states and 81 transitions. [2021-10-28 23:41:45,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states and 81 transitions. [2021-10-28 23:41:45,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 60. [2021-10-28 23:41:45,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 60 states have (on average 1.3) internal successors, (78), 59 states have internal predecessors, (78), 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) [2021-10-28 23:41:45,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 78 transitions. [2021-10-28 23:41:45,040 INFO L704 BuchiCegarLoop]: Abstraction has 60 states and 78 transitions. [2021-10-28 23:41:45,040 INFO L587 BuchiCegarLoop]: Abstraction has 60 states and 78 transitions. [2021-10-28 23:41:45,040 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-10-28 23:41:45,041 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 60 states and 78 transitions. [2021-10-28 23:41:45,041 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2021-10-28 23:41:45,041 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:41:45,041 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:41:45,042 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 2, 2, 2, 2, 1, 1, 1] [2021-10-28 23:41:45,042 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-28 23:41:45,043 INFO L791 eck$LassoCheckResult]: Stem: 997#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 998#L18-1 assume !!(main_~i~0 > 0); 1039#L12 assume 1 == main_~i~0;main_~up~0 := 1; 1044#L12-2 assume !(10 == main_~i~0); 1008#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 999#L18-1 assume !!(main_~i~0 > 0); 1000#L12 assume !(1 == main_~i~0); 1051#L12-2 assume !(10 == main_~i~0); 1049#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1047#L18-1 assume !!(main_~i~0 > 0); 1005#L12 assume !(1 == main_~i~0); 1006#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 1003#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1001#L18-1 assume !!(main_~i~0 > 0); 1002#L12 assume 1 == main_~i~0;main_~up~0 := 1; 993#L12-2 [2021-10-28 23:41:45,043 INFO L793 eck$LassoCheckResult]: Loop: 993#L12-2 assume !(10 == main_~i~0); 994#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1043#L18-1 assume !!(main_~i~0 > 0); 1042#L12 assume 1 == main_~i~0;main_~up~0 := 1; 993#L12-2 [2021-10-28 23:41:45,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:41:45,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1399375584, now seen corresponding path program 1 times [2021-10-28 23:41:45,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:41:45,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674929121] [2021-10-28 23:41:45,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:41:45,044 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:41:45,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:41:45,068 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-28 23:41:45,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:41:45,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674929121] [2021-10-28 23:41:45,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674929121] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:41:45,069 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:41:45,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:41:45,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72348478] [2021-10-28 23:41:45,070 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 23:41:45,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:41:45,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1573480, now seen corresponding path program 1 times [2021-10-28 23:41:45,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:41:45,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573292733] [2021-10-28 23:41:45,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:41:45,108 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:41:45,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:41:45,112 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:41:45,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:41:45,115 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:41:45,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:45,170 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:41:45,170 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:41:45,170 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:41:45,170 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:41:45,171 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:41:45,171 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:45,171 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:41:45,171 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:41:45,171 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration8_Loop [2021-10-28 23:41:45,171 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:41:45,171 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:41:45,172 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:45,175 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:45,180 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:45,183 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:45,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:45,237 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:41:45,237 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:41:45,237 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:45,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:45,238 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:45,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2021-10-28 23:41:45,240 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:41:45,240 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:41:45,254 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:41:45,254 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_10=0} Honda state: {v_rep~unnamed0~0~false_10=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:41:45,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:45,279 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:45,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:45,280 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:45,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2021-10-28 23:41:45,284 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:41:45,284 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:41:45,294 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:41:45,294 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=1} Honda state: {ULTIMATE.start_main_~up~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:41:45,319 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Ended with exit code 0 [2021-10-28 23:41:45,320 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:45,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:45,321 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:45,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2021-10-28 23:41:45,323 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:41:45,323 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:41:45,339 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:41:45,340 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_10=1} Honda state: {v_rep~unnamed0~0~true_10=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:41:45,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:45,366 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:45,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:45,367 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:45,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2021-10-28 23:41:45,368 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:41:45,369 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:41:45,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:45,405 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:45,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:45,405 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:45,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2021-10-28 23:41:45,408 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:41:45,408 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:41:45,499 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 23:41:45,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:45,503 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:41:45,503 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:41:45,503 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:41:45,503 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:41:45,503 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:41:45,503 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:45,503 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:41:45,503 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:41:45,503 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration8_Loop [2021-10-28 23:41:45,503 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:41:45,503 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:41:45,504 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:45,507 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:45,509 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:45,519 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:45,573 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:41:45,573 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:41:45,573 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:45,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:45,574 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:45,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2021-10-28 23:41:45,576 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 [2021-10-28 23:41:45,584 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:41:45,585 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:41:45,585 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:41:45,585 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:41:45,592 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:41:45,592 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:41:45,597 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:41:45,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:45,622 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:45,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:45,623 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:45,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2021-10-28 23:41:45,626 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 [2021-10-28 23:41:45,634 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:41:45,634 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:41:45,635 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:41:45,635 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:41:45,637 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:41:45,637 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:41:45,640 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:41:45,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:45,665 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:45,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:45,666 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:45,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2021-10-28 23:41:45,668 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 [2021-10-28 23:41:45,676 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:41:45,676 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:41:45,677 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:41:45,677 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:41:45,677 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:41:45,678 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:41:45,678 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:41:45,679 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:41:45,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:45,704 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:45,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:45,705 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:45,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2021-10-28 23:41:45,706 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 [2021-10-28 23:41:45,715 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:41:45,715 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:41:45,715 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:41:45,715 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:41:45,715 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:41:45,716 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:41:45,716 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:41:45,743 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:41:45,756 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 23:41:45,756 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 23:41:45,756 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:45,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:45,764 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:45,766 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:41:45,766 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 23:41:45,766 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:41:45,766 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 1 Supporting invariants [] [2021-10-28 23:41:45,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2021-10-28 23:41:45,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:45,808 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 23:41:45,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:41:45,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:41:45,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:41:45,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:41:45,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:41:45,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 23:41:45,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:41:45,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:41:45,946 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 [2021-10-28 23:41:45,947 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 60 states and 78 transitions. cyclomatic complexity: 25 Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2021-10-28 23:41:46,018 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 60 states and 78 transitions. cyclomatic complexity: 25. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 119 states and 154 transitions. Complement of second has 9 states. [2021-10-28 23:41:46,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-10-28 23:41:46,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2021-10-28 23:41:46,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 22 transitions. [2021-10-28 23:41:46,020 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 15 letters. Loop has 4 letters. [2021-10-28 23:41:46,020 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:41:46,020 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 19 letters. Loop has 4 letters. [2021-10-28 23:41:46,021 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:41:46,022 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 15 letters. Loop has 8 letters. [2021-10-28 23:41:46,024 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:41:46,025 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 119 states and 154 transitions. [2021-10-28 23:41:46,028 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 25 [2021-10-28 23:41:46,029 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 119 states to 115 states and 148 transitions. [2021-10-28 23:41:46,029 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 40 [2021-10-28 23:41:46,031 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2021-10-28 23:41:46,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 115 states and 148 transitions. [2021-10-28 23:41:46,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:41:46,032 INFO L681 BuchiCegarLoop]: Abstraction has 115 states and 148 transitions. [2021-10-28 23:41:46,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states and 148 transitions. [2021-10-28 23:41:46,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 101. [2021-10-28 23:41:46,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 101 states have (on average 1.306930693069307) internal successors, (132), 100 states have internal predecessors, (132), 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) [2021-10-28 23:41:46,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 132 transitions. [2021-10-28 23:41:46,055 INFO L704 BuchiCegarLoop]: Abstraction has 101 states and 132 transitions. [2021-10-28 23:41:46,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:41:46,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:41:46,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:41:46,056 INFO L87 Difference]: Start difference. First operand 101 states and 132 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:41:46,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:41:46,078 INFO L93 Difference]: Finished difference Result 97 states and 122 transitions. [2021-10-28 23:41:46,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:41:46,078 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 97 states and 122 transitions. [2021-10-28 23:41:46,080 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 18 [2021-10-28 23:41:46,082 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 97 states to 92 states and 116 transitions. [2021-10-28 23:41:46,083 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2021-10-28 23:41:46,083 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2021-10-28 23:41:46,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 92 states and 116 transitions. [2021-10-28 23:41:46,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:41:46,084 INFO L681 BuchiCegarLoop]: Abstraction has 92 states and 116 transitions. [2021-10-28 23:41:46,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states and 116 transitions. [2021-10-28 23:41:46,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 74. [2021-10-28 23:41:46,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 74 states have (on average 1.2837837837837838) internal successors, (95), 73 states have internal predecessors, (95), 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) [2021-10-28 23:41:46,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 95 transitions. [2021-10-28 23:41:46,088 INFO L704 BuchiCegarLoop]: Abstraction has 74 states and 95 transitions. [2021-10-28 23:41:46,088 INFO L587 BuchiCegarLoop]: Abstraction has 74 states and 95 transitions. [2021-10-28 23:41:46,088 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-10-28 23:41:46,088 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 74 states and 95 transitions. [2021-10-28 23:41:46,089 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-10-28 23:41:46,089 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:41:46,090 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:41:46,090 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 3, 3, 2, 2, 2, 1, 1] [2021-10-28 23:41:46,091 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-28 23:41:46,091 INFO L791 eck$LassoCheckResult]: Stem: 1463#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 1464#L18-1 assume !!(main_~i~0 > 0); 1511#L12 assume 1 == main_~i~0;main_~up~0 := 1; 1509#L12-2 assume !(10 == main_~i~0); 1507#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1489#L18-1 assume !!(main_~i~0 > 0); 1481#L12 assume !(1 == main_~i~0); 1487#L12-2 assume !(10 == main_~i~0); 1485#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1480#L18-1 assume !!(main_~i~0 > 0); 1477#L12 assume !(1 == main_~i~0); 1455#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 1456#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1465#L18-1 assume !!(main_~i~0 > 0); 1524#L12 assume !(1 == main_~i~0); 1518#L12-2 assume !(10 == main_~i~0); 1522#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1520#L18-1 assume !!(main_~i~0 > 0); 1517#L12 assume 1 == main_~i~0;main_~up~0 := 1; 1472#L12-2 [2021-10-28 23:41:46,091 INFO L793 eck$LassoCheckResult]: Loop: 1472#L12-2 assume !(10 == main_~i~0); 1469#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1470#L18-1 assume !!(main_~i~0 > 0); 1506#L12 assume 1 == main_~i~0;main_~up~0 := 1; 1472#L12-2 [2021-10-28 23:41:46,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:41:46,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1376811083, now seen corresponding path program 2 times [2021-10-28 23:41:46,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:41:46,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224390019] [2021-10-28 23:41:46,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:41:46,092 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:41:46,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:41:46,153 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-28 23:41:46,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:41:46,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224390019] [2021-10-28 23:41:46,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224390019] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:41:46,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513445020] [2021-10-28 23:41:46,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:41:46,154 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:41:46,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:46,160 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:41:46,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2021-10-28 23:41:46,218 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 23:41:46,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:41:46,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:41:46,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:41:46,290 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-28 23:41:46,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513445020] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:41:46,290 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:41:46,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-10-28 23:41:46,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435946900] [2021-10-28 23:41:46,291 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 23:41:46,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:41:46,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1573480, now seen corresponding path program 2 times [2021-10-28 23:41:46,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:41:46,291 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397947981] [2021-10-28 23:41:46,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:41:46,292 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:41:46,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:41:46,296 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:41:46,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:41:46,300 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:41:46,339 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:41:46,339 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:41:46,339 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:41:46,340 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:41:46,340 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:41:46,340 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:46,340 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:41:46,340 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:41:46,340 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration9_Loop [2021-10-28 23:41:46,341 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:41:46,341 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:41:46,345 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:46,350 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:46,353 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:46,358 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:46,409 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:41:46,409 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:41:46,409 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:46,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:46,410 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:46,421 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:41:46,421 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:41:46,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2021-10-28 23:41:46,472 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Ended with exit code 0 [2021-10-28 23:41:46,473 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:46,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:46,473 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:46,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2021-10-28 23:41:46,475 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:41:46,475 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:41:46,556 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 23:41:46,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:46,559 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:41:46,559 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:41:46,559 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:41:46,559 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:41:46,559 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:41:46,559 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:46,559 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:41:46,559 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:41:46,559 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration9_Loop [2021-10-28 23:41:46,559 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:41:46,559 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:41:46,560 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:46,565 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:46,567 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:46,569 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:46,610 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:41:46,611 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:41:46,611 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:46,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:46,622 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:46,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Waiting until timeout for monitored process [2021-10-28 23:41:46,624 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 [2021-10-28 23:41:46,632 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:41:46,632 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:41:46,632 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:41:46,632 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:41:46,632 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:41:46,633 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:41:46,633 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:41:46,635 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:41:46,637 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 23:41:46,637 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 23:41:46,637 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:46,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:46,639 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:46,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Waiting until timeout for monitored process [2021-10-28 23:41:46,640 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:41:46,640 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 23:41:46,640 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:41:46,640 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 1 Supporting invariants [] [2021-10-28 23:41:46,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:46,663 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 23:41:46,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:41:46,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:41:46,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:41:46,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:41:46,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:41:46,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 23:41:46,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:41:46,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:41:46,817 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 [2021-10-28 23:41:46,818 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 74 states and 95 transitions. cyclomatic complexity: 30 Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2021-10-28 23:41:46,882 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 74 states and 95 transitions. cyclomatic complexity: 30. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 133 states and 164 transitions. Complement of second has 9 states. [2021-10-28 23:41:46,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-10-28 23:41:46,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2021-10-28 23:41:46,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2021-10-28 23:41:46,884 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 19 letters. Loop has 4 letters. [2021-10-28 23:41:46,884 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:41:46,884 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 23:41:46,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:41:46,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:41:46,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:41:46,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:41:46,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:41:46,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 23:41:46,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:41:46,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:41:46,994 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2021-10-28 23:41:46,994 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 74 states and 95 transitions. cyclomatic complexity: 30 Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2021-10-28 23:41:47,041 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 74 states and 95 transitions. cyclomatic complexity: 30. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 133 states and 164 transitions. Complement of second has 9 states. [2021-10-28 23:41:47,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-10-28 23:41:47,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2021-10-28 23:41:47,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2021-10-28 23:41:47,042 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 19 letters. Loop has 4 letters. [2021-10-28 23:41:47,043 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:41:47,043 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 23:41:47,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:41:47,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:41:47,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:41:47,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:41:47,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:47,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:41:47,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 23:41:47,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:41:47,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:41:47,227 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-10-28 23:41:47,228 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 74 states and 95 transitions. cyclomatic complexity: 30 Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2021-10-28 23:41:47,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:47,304 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 74 states and 95 transitions. cyclomatic complexity: 30. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 142 states and 176 transitions. Complement of second has 8 states. [2021-10-28 23:41:47,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-10-28 23:41:47,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2021-10-28 23:41:47,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 23 transitions. [2021-10-28 23:41:47,305 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 19 letters. Loop has 4 letters. [2021-10-28 23:41:47,306 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:41:47,306 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 23 letters. Loop has 4 letters. [2021-10-28 23:41:47,306 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:41:47,306 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 19 letters. Loop has 8 letters. [2021-10-28 23:41:47,307 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:41:47,307 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 142 states and 176 transitions. [2021-10-28 23:41:47,309 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 31 [2021-10-28 23:41:47,311 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 142 states to 98 states and 123 transitions. [2021-10-28 23:41:47,311 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2021-10-28 23:41:47,311 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 37 [2021-10-28 23:41:47,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 98 states and 123 transitions. [2021-10-28 23:41:47,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:41:47,311 INFO L681 BuchiCegarLoop]: Abstraction has 98 states and 123 transitions. [2021-10-28 23:41:47,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states and 123 transitions. [2021-10-28 23:41:47,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 79. [2021-10-28 23:41:47,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 79 states have (on average 1.2784810126582278) internal successors, (101), 78 states have internal predecessors, (101), 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) [2021-10-28 23:41:47,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 101 transitions. [2021-10-28 23:41:47,315 INFO L704 BuchiCegarLoop]: Abstraction has 79 states and 101 transitions. [2021-10-28 23:41:47,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:41:47,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:41:47,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:41:47,321 INFO L87 Difference]: Start difference. First operand 79 states and 101 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 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) [2021-10-28 23:41:47,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:41:47,350 INFO L93 Difference]: Finished difference Result 129 states and 157 transitions. [2021-10-28 23:41:47,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:41:47,350 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 129 states and 157 transitions. [2021-10-28 23:41:47,352 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 35 [2021-10-28 23:41:47,353 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 129 states to 125 states and 153 transitions. [2021-10-28 23:41:47,354 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2021-10-28 23:41:47,354 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2021-10-28 23:41:47,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 125 states and 153 transitions. [2021-10-28 23:41:47,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:41:47,354 INFO L681 BuchiCegarLoop]: Abstraction has 125 states and 153 transitions. [2021-10-28 23:41:47,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states and 153 transitions. [2021-10-28 23:41:47,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 91. [2021-10-28 23:41:47,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 91 states have (on average 1.2417582417582418) internal successors, (113), 90 states have internal predecessors, (113), 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) [2021-10-28 23:41:47,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 113 transitions. [2021-10-28 23:41:47,358 INFO L704 BuchiCegarLoop]: Abstraction has 91 states and 113 transitions. [2021-10-28 23:41:47,358 INFO L587 BuchiCegarLoop]: Abstraction has 91 states and 113 transitions. [2021-10-28 23:41:47,358 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-10-28 23:41:47,359 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 91 states and 113 transitions. [2021-10-28 23:41:47,360 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 25 [2021-10-28 23:41:47,360 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:41:47,360 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:41:47,361 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [6, 4, 4, 3, 2, 2, 1, 1] [2021-10-28 23:41:47,361 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [5, 4, 4, 3, 2, 1, 1] [2021-10-28 23:41:47,361 INFO L791 eck$LassoCheckResult]: Stem: 2465#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 2466#L18-1 assume !!(main_~i~0 > 0); 2519#L12 assume 1 == main_~i~0;main_~up~0 := 1; 2520#L12-2 assume !(10 == main_~i~0); 2536#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2467#L18-1 assume !!(main_~i~0 > 0); 2468#L12 assume !(1 == main_~i~0); 2546#L12-2 assume !(10 == main_~i~0); 2545#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2544#L18-1 assume !!(main_~i~0 > 0); 2498#L12 assume !(1 == main_~i~0); 2543#L12-2 assume !(10 == main_~i~0); 2500#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2497#L18-1 assume !!(main_~i~0 > 0); 2495#L12 assume !(1 == main_~i~0); 2493#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 2471#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2472#L18-1 assume !!(main_~i~0 > 0); 2517#L12 assume !(1 == main_~i~0); 2509#L12-2 assume !(10 == main_~i~0); 2515#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2514#L18-1 assume !!(main_~i~0 > 0); 2508#L12 assume 1 == main_~i~0;main_~up~0 := 1; 2505#L12-2 [2021-10-28 23:41:47,362 INFO L793 eck$LassoCheckResult]: Loop: 2505#L12-2 assume !(10 == main_~i~0); 2504#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2503#L18-1 assume !!(main_~i~0 > 0); 2502#L12 assume !(1 == main_~i~0); 2501#L12-2 assume !(10 == main_~i~0); 2499#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2496#L18-1 assume !!(main_~i~0 > 0); 2494#L12 assume !(1 == main_~i~0); 2491#L12-2 assume !(10 == main_~i~0); 2489#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2485#L18-1 assume !!(main_~i~0 > 0); 2486#L12 assume !(1 == main_~i~0); 2492#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 2478#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2479#L18-1 assume !!(main_~i~0 > 0); 2483#L12 assume !(1 == main_~i~0); 2481#L12-2 assume !(10 == main_~i~0); 2482#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2513#L18-1 assume !!(main_~i~0 > 0); 2510#L12 assume 1 == main_~i~0;main_~up~0 := 1; 2505#L12-2 [2021-10-28 23:41:47,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:41:47,362 INFO L85 PathProgramCache]: Analyzing trace with hash 2134050740, now seen corresponding path program 3 times [2021-10-28 23:41:47,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:41:47,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705918734] [2021-10-28 23:41:47,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:41:47,363 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:41:47,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:41:47,412 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 32 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-28 23:41:47,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:41:47,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705918734] [2021-10-28 23:41:47,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705918734] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:41:47,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434003551] [2021-10-28 23:41:47,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 23:41:47,413 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:41:47,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:47,414 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:41:47,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2021-10-28 23:41:47,513 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-28 23:41:47,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:41:47,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:41:47,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:41:47,608 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 26 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-10-28 23:41:47,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434003551] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:41:47,609 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:41:47,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 9 [2021-10-28 23:41:47,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461816497] [2021-10-28 23:41:47,614 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 23:41:47,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:41:47,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1620775762, now seen corresponding path program 1 times [2021-10-28 23:41:47,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:41:47,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091552125] [2021-10-28 23:41:47,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:41:47,617 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:41:47,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:41:47,678 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-28 23:41:47,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:41:47,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091552125] [2021-10-28 23:41:47,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091552125] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:41:47,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099673237] [2021-10-28 23:41:47,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:41:47,679 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:41:47,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:47,681 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:41:47,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2021-10-28 23:41:47,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:41:47,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:41:47,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:41:47,822 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-28 23:41:47,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099673237] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:41:47,822 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:41:47,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-10-28 23:41:47,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677647905] [2021-10-28 23:41:47,823 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:41:47,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:41:47,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:41:47,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:41:47,824 INFO L87 Difference]: Start difference. First operand 91 states and 113 transitions. cyclomatic complexity: 31 Second operand has 5 states, 4 states have (on average 3.0) 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) [2021-10-28 23:41:47,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:41:47,856 INFO L93 Difference]: Finished difference Result 116 states and 144 transitions. [2021-10-28 23:41:47,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:41:47,857 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 116 states and 144 transitions. [2021-10-28 23:41:47,858 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 31 [2021-10-28 23:41:47,860 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 116 states to 116 states and 144 transitions. [2021-10-28 23:41:47,860 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2021-10-28 23:41:47,860 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2021-10-28 23:41:47,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 116 states and 144 transitions. [2021-10-28 23:41:47,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:41:47,861 INFO L681 BuchiCegarLoop]: Abstraction has 116 states and 144 transitions. [2021-10-28 23:41:47,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states and 144 transitions. [2021-10-28 23:41:47,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 103. [2021-10-28 23:41:47,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 103 states have (on average 1.233009708737864) internal successors, (127), 102 states have internal predecessors, (127), 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) [2021-10-28 23:41:47,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 127 transitions. [2021-10-28 23:41:47,865 INFO L704 BuchiCegarLoop]: Abstraction has 103 states and 127 transitions. [2021-10-28 23:41:47,865 INFO L587 BuchiCegarLoop]: Abstraction has 103 states and 127 transitions. [2021-10-28 23:41:47,865 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-10-28 23:41:47,865 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 103 states and 127 transitions. [2021-10-28 23:41:47,867 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 29 [2021-10-28 23:41:47,867 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:41:47,867 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:41:47,868 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [7, 5, 5, 3, 3, 2, 1, 1] [2021-10-28 23:41:47,868 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [6, 5, 5, 3, 3, 1, 1] [2021-10-28 23:41:47,869 INFO L791 eck$LassoCheckResult]: Stem: 2810#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 2811#L18-1 assume !!(main_~i~0 > 0); 2846#L12 assume 1 == main_~i~0;main_~up~0 := 1; 2843#L12-2 assume !(10 == main_~i~0); 2840#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2838#L18-1 assume !!(main_~i~0 > 0); 2836#L12 assume !(1 == main_~i~0); 2835#L12-2 assume !(10 == main_~i~0); 2834#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2833#L18-1 assume !!(main_~i~0 > 0); 2830#L12 assume !(1 == main_~i~0); 2832#L12-2 assume !(10 == main_~i~0); 2831#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2829#L18-1 assume !!(main_~i~0 > 0); 2828#L12 assume !(1 == main_~i~0); 2827#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 2816#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2817#L18-1 assume !!(main_~i~0 > 0); 2905#L12 assume !(1 == main_~i~0); 2904#L12-2 assume !(10 == main_~i~0); 2903#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2902#L18-1 assume !!(main_~i~0 > 0); 2901#L12 assume !(1 == main_~i~0); 2886#L12-2 assume !(10 == main_~i~0); 2893#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2889#L18-1 assume !!(main_~i~0 > 0); 2885#L12 assume 1 == main_~i~0;main_~up~0 := 1; 2805#L12-2 [2021-10-28 23:41:47,869 INFO L793 eck$LassoCheckResult]: Loop: 2805#L12-2 assume !(10 == main_~i~0); 2806#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2821#L18-1 assume !!(main_~i~0 > 0); 2874#L12 assume !(1 == main_~i~0); 2871#L12-2 assume !(10 == main_~i~0); 2868#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2866#L18-1 assume !!(main_~i~0 > 0); 2864#L12 assume !(1 == main_~i~0); 2861#L12-2 assume !(10 == main_~i~0); 2859#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2857#L18-1 assume !!(main_~i~0 > 0); 2852#L12 assume !(1 == main_~i~0); 2853#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 2822#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2823#L18-1 assume !!(main_~i~0 > 0); 2900#L12 assume !(1 == main_~i~0); 2898#L12-2 assume !(10 == main_~i~0); 2899#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2812#L18-1 assume !!(main_~i~0 > 0); 2813#L12 assume !(1 == main_~i~0); 2825#L12-2 assume !(10 == main_~i~0); 2826#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2890#L18-1 assume !!(main_~i~0 > 0); 2887#L12 assume 1 == main_~i~0;main_~up~0 := 1; 2805#L12-2 [2021-10-28 23:41:47,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:41:47,870 INFO L85 PathProgramCache]: Analyzing trace with hash 442904351, now seen corresponding path program 4 times [2021-10-28 23:41:47,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:41:47,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455947467] [2021-10-28 23:41:47,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:41:47,870 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:41:47,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:41:47,931 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 47 proven. 15 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-28 23:41:47,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:41:47,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455947467] [2021-10-28 23:41:47,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455947467] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:41:47,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391565637] [2021-10-28 23:41:47,932 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 23:41:47,933 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:41:47,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:47,936 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:41:47,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2021-10-28 23:41:48,026 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 23:41:48,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:41:48,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 23:41:48,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:41:48,098 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 47 proven. 15 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-28 23:41:48,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391565637] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:41:48,099 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:41:48,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-28 23:41:48,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65542418] [2021-10-28 23:41:48,100 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 23:41:48,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:41:48,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1417462851, now seen corresponding path program 2 times [2021-10-28 23:41:48,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:41:48,101 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338396695] [2021-10-28 23:41:48,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:41:48,101 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:41:48,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:41:48,141 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 35 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-28 23:41:48,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:41:48,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338396695] [2021-10-28 23:41:48,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338396695] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:41:48,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636783917] [2021-10-28 23:41:48,142 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:41:48,142 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:41:48,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:48,149 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:41:48,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2021-10-28 23:41:48,265 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 23:41:48,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:41:48,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 23:41:48,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:41:48,343 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 35 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-28 23:41:48,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636783917] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:41:48,344 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:41:48,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-10-28 23:41:48,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35346935] [2021-10-28 23:41:48,345 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:41:48,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:41:48,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:41:48,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:41:48,346 INFO L87 Difference]: Start difference. First operand 103 states and 127 transitions. cyclomatic complexity: 33 Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 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) [2021-10-28 23:41:48,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:41:48,389 INFO L93 Difference]: Finished difference Result 132 states and 163 transitions. [2021-10-28 23:41:48,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:41:48,392 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 132 states and 163 transitions. [2021-10-28 23:41:48,393 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 35 [2021-10-28 23:41:48,394 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 132 states to 132 states and 163 transitions. [2021-10-28 23:41:48,394 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 45 [2021-10-28 23:41:48,394 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 45 [2021-10-28 23:41:48,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 132 states and 163 transitions. [2021-10-28 23:41:48,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:41:48,394 INFO L681 BuchiCegarLoop]: Abstraction has 132 states and 163 transitions. [2021-10-28 23:41:48,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states and 163 transitions. [2021-10-28 23:41:48,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 115. [2021-10-28 23:41:48,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 115 states have (on average 1.2260869565217392) internal successors, (141), 114 states have internal predecessors, (141), 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) [2021-10-28 23:41:48,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 141 transitions. [2021-10-28 23:41:48,397 INFO L704 BuchiCegarLoop]: Abstraction has 115 states and 141 transitions. [2021-10-28 23:41:48,397 INFO L587 BuchiCegarLoop]: Abstraction has 115 states and 141 transitions. [2021-10-28 23:41:48,397 INFO L425 BuchiCegarLoop]: ======== Iteration 12============ [2021-10-28 23:41:48,397 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 115 states and 141 transitions. [2021-10-28 23:41:48,398 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 33 [2021-10-28 23:41:48,399 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:41:48,399 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:41:48,400 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [8, 6, 6, 4, 3, 2, 1, 1] [2021-10-28 23:41:48,400 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [7, 6, 6, 4, 3, 1, 1] [2021-10-28 23:41:48,401 INFO L791 eck$LassoCheckResult]: Stem: 3208#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 3209#L18-1 assume !!(main_~i~0 > 0); 3252#L12 assume 1 == main_~i~0;main_~up~0 := 1; 3249#L12-2 assume !(10 == main_~i~0); 3247#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3245#L18-1 assume !!(main_~i~0 > 0); 3244#L12 assume !(1 == main_~i~0); 3243#L12-2 assume !(10 == main_~i~0); 3242#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3239#L18-1 assume !!(main_~i~0 > 0); 3229#L12 assume !(1 == main_~i~0); 3232#L12-2 assume !(10 == main_~i~0); 3230#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3228#L18-1 assume !!(main_~i~0 > 0); 3226#L12 assume !(1 == main_~i~0); 3223#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 3210#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3211#L18-1 assume !!(main_~i~0 > 0); 3269#L12 assume !(1 == main_~i~0); 3268#L12-2 assume !(10 == main_~i~0); 3267#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3266#L18-1 assume !!(main_~i~0 > 0); 3265#L12 assume !(1 == main_~i~0); 3264#L12-2 assume !(10 == main_~i~0); 3263#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3262#L18-1 assume !!(main_~i~0 > 0); 3261#L12 assume !(1 == main_~i~0); 3234#L12-2 assume !(10 == main_~i~0); 3240#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3237#L18-1 assume !!(main_~i~0 > 0); 3233#L12 assume 1 == main_~i~0;main_~up~0 := 1; 3231#L12-2 [2021-10-28 23:41:48,401 INFO L793 eck$LassoCheckResult]: Loop: 3231#L12-2 assume !(10 == main_~i~0); 3216#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3204#L18-1 assume !!(main_~i~0 > 0); 3205#L12 assume !(1 == main_~i~0); 3295#L12-2 assume !(10 == main_~i~0); 3293#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3291#L18-1 assume !!(main_~i~0 > 0); 3289#L12 assume !(1 == main_~i~0); 3288#L12-2 assume !(10 == main_~i~0); 3278#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3285#L18-1 assume !!(main_~i~0 > 0); 3281#L12 assume !(1 == main_~i~0); 3277#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 3201#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3217#L18-1 assume !!(main_~i~0 > 0); 3282#L12 assume !(1 == main_~i~0); 3279#L12-2 assume !(10 == main_~i~0); 3276#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3275#L18-1 assume !!(main_~i~0 > 0); 3274#L12 assume !(1 == main_~i~0); 3273#L12-2 assume !(10 == main_~i~0); 3272#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3271#L18-1 assume !!(main_~i~0 > 0); 3270#L12 assume !(1 == main_~i~0); 3236#L12-2 assume !(10 == main_~i~0); 3241#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3238#L18-1 assume !!(main_~i~0 > 0); 3235#L12 assume 1 == main_~i~0;main_~up~0 := 1; 3231#L12-2 [2021-10-28 23:41:48,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:41:48,402 INFO L85 PathProgramCache]: Analyzing trace with hash 261204234, now seen corresponding path program 5 times [2021-10-28 23:41:48,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:41:48,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87002730] [2021-10-28 23:41:48,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:41:48,402 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:41:48,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:41:48,444 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 62 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-10-28 23:41:48,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:41:48,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87002730] [2021-10-28 23:41:48,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87002730] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:41:48,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797710751] [2021-10-28 23:41:48,445 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 23:41:48,445 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:41:48,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:48,446 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:41:48,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2021-10-28 23:41:48,554 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-28 23:41:48,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:41:48,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 23:41:48,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:41:48,660 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 62 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-10-28 23:41:48,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797710751] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:41:48,661 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:41:48,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-28 23:41:48,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196785008] [2021-10-28 23:41:48,664 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 23:41:48,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:41:48,664 INFO L85 PathProgramCache]: Analyzing trace with hash 2080061096, now seen corresponding path program 3 times [2021-10-28 23:41:48,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:41:48,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404300400] [2021-10-28 23:41:48,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:41:48,665 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:41:48,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:41:48,765 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 48 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-28 23:41:48,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:41:48,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404300400] [2021-10-28 23:41:48,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404300400] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:41:48,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634295071] [2021-10-28 23:41:48,766 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 23:41:48,767 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:41:48,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:48,771 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:41:48,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2021-10-28 23:41:48,893 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-28 23:41:48,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:41:48,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 23:41:48,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:41:48,988 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 48 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-28 23:41:48,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634295071] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:41:48,989 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:41:48,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-28 23:41:48,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713580422] [2021-10-28 23:41:48,990 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:41:48,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:41:48,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:41:48,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:41:48,992 INFO L87 Difference]: Start difference. First operand 115 states and 141 transitions. cyclomatic complexity: 35 Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 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) [2021-10-28 23:41:49,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:41:49,041 INFO L93 Difference]: Finished difference Result 148 states and 182 transitions. [2021-10-28 23:41:49,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:41:49,041 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 148 states and 182 transitions. [2021-10-28 23:41:49,043 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 39 [2021-10-28 23:41:49,045 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 148 states to 148 states and 182 transitions. [2021-10-28 23:41:49,045 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 49 [2021-10-28 23:41:49,045 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 49 [2021-10-28 23:41:49,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 148 states and 182 transitions. [2021-10-28 23:41:49,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:41:49,046 INFO L681 BuchiCegarLoop]: Abstraction has 148 states and 182 transitions. [2021-10-28 23:41:49,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states and 182 transitions. [2021-10-28 23:41:49,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 127. [2021-10-28 23:41:49,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 127 states have (on average 1.220472440944882) internal successors, (155), 126 states have internal predecessors, (155), 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) [2021-10-28 23:41:49,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 155 transitions. [2021-10-28 23:41:49,050 INFO L704 BuchiCegarLoop]: Abstraction has 127 states and 155 transitions. [2021-10-28 23:41:49,050 INFO L587 BuchiCegarLoop]: Abstraction has 127 states and 155 transitions. [2021-10-28 23:41:49,051 INFO L425 BuchiCegarLoop]: ======== Iteration 13============ [2021-10-28 23:41:49,051 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 127 states and 155 transitions. [2021-10-28 23:41:49,052 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 37 [2021-10-28 23:41:49,052 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:41:49,052 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:41:49,060 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [9, 7, 7, 5, 3, 2, 1, 1] [2021-10-28 23:41:49,061 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [8, 7, 7, 5, 3, 1, 1] [2021-10-28 23:41:49,061 INFO L791 eck$LassoCheckResult]: Stem: 3656#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 3657#L18-1 assume !!(main_~i~0 > 0); 3700#L12 assume 1 == main_~i~0;main_~up~0 := 1; 3697#L12-2 assume !(10 == main_~i~0); 3695#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3693#L18-1 assume !!(main_~i~0 > 0); 3692#L12 assume !(1 == main_~i~0); 3691#L12-2 assume !(10 == main_~i~0); 3690#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3687#L18-1 assume !!(main_~i~0 > 0); 3677#L12 assume !(1 == main_~i~0); 3680#L12-2 assume !(10 == main_~i~0); 3678#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3676#L18-1 assume !!(main_~i~0 > 0); 3674#L12 assume !(1 == main_~i~0); 3671#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 3658#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3659#L18-1 assume !!(main_~i~0 > 0); 3721#L12 assume !(1 == main_~i~0); 3720#L12-2 assume !(10 == main_~i~0); 3719#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3718#L18-1 assume !!(main_~i~0 > 0); 3717#L12 assume !(1 == main_~i~0); 3716#L12-2 assume !(10 == main_~i~0); 3715#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3714#L18-1 assume !!(main_~i~0 > 0); 3713#L12 assume !(1 == main_~i~0); 3712#L12-2 assume !(10 == main_~i~0); 3711#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3710#L18-1 assume !!(main_~i~0 > 0); 3709#L12 assume !(1 == main_~i~0); 3682#L12-2 assume !(10 == main_~i~0); 3688#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3685#L18-1 assume !!(main_~i~0 > 0); 3681#L12 assume 1 == main_~i~0;main_~up~0 := 1; 3679#L12-2 [2021-10-28 23:41:49,062 INFO L793 eck$LassoCheckResult]: Loop: 3679#L12-2 assume !(10 == main_~i~0); 3664#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3665#L18-1 assume !!(main_~i~0 > 0); 3735#L12 assume !(1 == main_~i~0); 3736#L12-2 assume !(10 == main_~i~0); 3748#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3747#L18-1 assume !!(main_~i~0 > 0); 3745#L12 assume !(1 == main_~i~0); 3743#L12-2 assume !(10 == main_~i~0); 3738#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3742#L18-1 assume !!(main_~i~0 > 0); 3740#L12 assume !(1 == main_~i~0); 3737#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 3649#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3666#L18-1 assume !!(main_~i~0 > 0); 3741#L12 assume !(1 == main_~i~0); 3739#L12-2 assume !(10 == main_~i~0); 3732#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3731#L18-1 assume !!(main_~i~0 > 0); 3730#L12 assume !(1 == main_~i~0); 3729#L12-2 assume !(10 == main_~i~0); 3728#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3727#L18-1 assume !!(main_~i~0 > 0); 3726#L12 assume !(1 == main_~i~0); 3725#L12-2 assume !(10 == main_~i~0); 3724#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3723#L18-1 assume !!(main_~i~0 > 0); 3722#L12 assume !(1 == main_~i~0); 3684#L12-2 assume !(10 == main_~i~0); 3689#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3686#L18-1 assume !!(main_~i~0 > 0); 3683#L12 assume 1 == main_~i~0;main_~up~0 := 1; 3679#L12-2 [2021-10-28 23:41:49,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:41:49,062 INFO L85 PathProgramCache]: Analyzing trace with hash 759706997, now seen corresponding path program 6 times [2021-10-28 23:41:49,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:41:49,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493702904] [2021-10-28 23:41:49,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:41:49,063 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:41:49,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:41:49,124 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 77 proven. 15 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-10-28 23:41:49,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:41:49,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493702904] [2021-10-28 23:41:49,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493702904] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:41:49,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281485036] [2021-10-28 23:41:49,125 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-28 23:41:49,125 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:41:49,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:49,131 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:41:49,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2021-10-28 23:41:49,279 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-10-28 23:41:49,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:41:49,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 23:41:49,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:41:49,442 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 71 proven. 36 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-10-28 23:41:49,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281485036] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:41:49,442 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:41:49,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2021-10-28 23:41:49,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096064238] [2021-10-28 23:41:49,443 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 23:41:49,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:41:49,444 INFO L85 PathProgramCache]: Analyzing trace with hash 148227091, now seen corresponding path program 4 times [2021-10-28 23:41:49,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:41:49,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613607252] [2021-10-28 23:41:49,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:41:49,445 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:41:49,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:41:49,511 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 61 proven. 36 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-28 23:41:49,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:41:49,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613607252] [2021-10-28 23:41:49,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613607252] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:41:49,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525407529] [2021-10-28 23:41:49,512 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 23:41:49,512 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:41:49,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:49,528 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:41:49,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2021-10-28 23:41:49,676 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 23:41:49,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:41:49,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 23:41:49,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:41:49,783 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 61 proven. 36 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-28 23:41:49,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525407529] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:41:49,783 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:41:49,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-10-28 23:41:49,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210090338] [2021-10-28 23:41:49,784 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:41:49,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:41:49,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:41:49,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:41:49,784 INFO L87 Difference]: Start difference. First operand 127 states and 155 transitions. cyclomatic complexity: 37 Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 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) [2021-10-28 23:41:49,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:41:49,846 INFO L93 Difference]: Finished difference Result 164 states and 201 transitions. [2021-10-28 23:41:49,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:41:49,854 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 164 states and 201 transitions. [2021-10-28 23:41:49,856 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 43 [2021-10-28 23:41:49,858 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 164 states to 164 states and 201 transitions. [2021-10-28 23:41:49,859 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 53 [2021-10-28 23:41:49,859 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53 [2021-10-28 23:41:49,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 164 states and 201 transitions. [2021-10-28 23:41:49,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:41:49,860 INFO L681 BuchiCegarLoop]: Abstraction has 164 states and 201 transitions. [2021-10-28 23:41:49,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states and 201 transitions. [2021-10-28 23:41:49,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 139. [2021-10-28 23:41:49,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 139 states have (on average 1.2158273381294964) internal successors, (169), 138 states have internal predecessors, (169), 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) [2021-10-28 23:41:49,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 169 transitions. [2021-10-28 23:41:49,865 INFO L704 BuchiCegarLoop]: Abstraction has 139 states and 169 transitions. [2021-10-28 23:41:49,865 INFO L587 BuchiCegarLoop]: Abstraction has 139 states and 169 transitions. [2021-10-28 23:41:49,866 INFO L425 BuchiCegarLoop]: ======== Iteration 14============ [2021-10-28 23:41:49,866 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 139 states and 169 transitions. [2021-10-28 23:41:49,867 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 41 [2021-10-28 23:41:49,867 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:41:49,867 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:41:49,870 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [10, 8, 8, 6, 3, 2, 1, 1] [2021-10-28 23:41:49,871 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [9, 8, 8, 6, 3, 1, 1] [2021-10-28 23:41:49,871 INFO L791 eck$LassoCheckResult]: Stem: 4163#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 4164#L18-1 assume !!(main_~i~0 > 0); 4207#L12 assume 1 == main_~i~0;main_~up~0 := 1; 4204#L12-2 assume !(10 == main_~i~0); 4202#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4200#L18-1 assume !!(main_~i~0 > 0); 4199#L12 assume !(1 == main_~i~0); 4198#L12-2 assume !(10 == main_~i~0); 4197#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4194#L18-1 assume !!(main_~i~0 > 0); 4184#L12 assume !(1 == main_~i~0); 4187#L12-2 assume !(10 == main_~i~0); 4185#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4183#L18-1 assume !!(main_~i~0 > 0); 4181#L12 assume !(1 == main_~i~0); 4178#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 4165#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4166#L18-1 assume !!(main_~i~0 > 0); 4279#L12 assume !(1 == main_~i~0); 4278#L12-2 assume !(10 == main_~i~0); 4277#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4276#L18-1 assume !!(main_~i~0 > 0); 4275#L12 assume !(1 == main_~i~0); 4274#L12-2 assume !(10 == main_~i~0); 4259#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4256#L18-1 assume !!(main_~i~0 > 0); 4253#L12 assume !(1 == main_~i~0); 4251#L12-2 assume !(10 == main_~i~0); 4248#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4245#L18-1 assume !!(main_~i~0 > 0); 4242#L12 assume !(1 == main_~i~0); 4240#L12-2 assume !(10 == main_~i~0); 4238#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4235#L18-1 assume !!(main_~i~0 > 0); 4232#L12 assume !(1 == main_~i~0); 4191#L12-2 assume !(10 == main_~i~0); 4196#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4193#L18-1 assume !!(main_~i~0 > 0); 4190#L12 assume 1 == main_~i~0;main_~up~0 := 1; 4186#L12-2 [2021-10-28 23:41:49,873 INFO L793 eck$LassoCheckResult]: Loop: 4186#L12-2 assume !(10 == main_~i~0); 4176#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4159#L18-1 assume !!(main_~i~0 > 0); 4160#L12 assume !(1 == main_~i~0); 4264#L12-2 assume !(10 == main_~i~0); 4262#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4260#L18-1 assume !!(main_~i~0 > 0); 4257#L12 assume !(1 == main_~i~0); 4254#L12-2 assume !(10 == main_~i~0); 4244#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4249#L18-1 assume !!(main_~i~0 > 0); 4246#L12 assume !(1 == main_~i~0); 4243#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 4156#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4172#L18-1 assume !!(main_~i~0 > 0); 4234#L12 assume !(1 == main_~i~0); 4231#L12-2 assume !(10 == main_~i~0); 4230#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4229#L18-1 assume !!(main_~i~0 > 0); 4228#L12 assume !(1 == main_~i~0); 4227#L12-2 assume !(10 == main_~i~0); 4226#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4225#L18-1 assume !!(main_~i~0 > 0); 4224#L12 assume !(1 == main_~i~0); 4223#L12-2 assume !(10 == main_~i~0); 4222#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4221#L18-1 assume !!(main_~i~0 > 0); 4220#L12 assume !(1 == main_~i~0); 4219#L12-2 assume !(10 == main_~i~0); 4218#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4217#L18-1 assume !!(main_~i~0 > 0); 4216#L12 assume !(1 == main_~i~0); 4189#L12-2 assume !(10 == main_~i~0); 4195#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4192#L18-1 assume !!(main_~i~0 > 0); 4188#L12 assume 1 == main_~i~0;main_~up~0 := 1; 4186#L12-2 [2021-10-28 23:41:49,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:41:49,874 INFO L85 PathProgramCache]: Analyzing trace with hash 985437280, now seen corresponding path program 7 times [2021-10-28 23:41:49,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:41:49,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773287606] [2021-10-28 23:41:49,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:41:49,874 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:41:49,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:41:49,944 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 92 proven. 15 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-10-28 23:41:49,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:41:49,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773287606] [2021-10-28 23:41:49,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773287606] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:41:49,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280619775] [2021-10-28 23:41:49,945 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-28 23:41:49,945 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:41:49,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:49,947 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:41:49,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2021-10-28 23:41:50,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:41:50,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 23:41:50,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:41:50,208 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 92 proven. 15 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-10-28 23:41:50,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280619775] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:41:50,209 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:41:50,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-28 23:41:50,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802550003] [2021-10-28 23:41:50,210 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 23:41:50,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:41:50,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1636148222, now seen corresponding path program 5 times [2021-10-28 23:41:50,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:41:50,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838745456] [2021-10-28 23:41:50,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:41:50,211 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:41:50,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:41:50,313 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 74 proven. 55 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-28 23:41:50,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:41:50,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838745456] [2021-10-28 23:41:50,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838745456] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:41:50,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035966610] [2021-10-28 23:41:50,315 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 23:41:50,316 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:41:50,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:50,322 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:41:50,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2021-10-28 23:41:50,492 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-10-28 23:41:50,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:41:50,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 23:41:50,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:41:50,607 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 74 proven. 55 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-28 23:41:50,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035966610] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:41:50,608 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:41:50,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-10-28 23:41:50,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140202038] [2021-10-28 23:41:50,609 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:41:50,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:41:50,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 23:41:50,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:41:50,611 INFO L87 Difference]: Start difference. First operand 139 states and 169 transitions. cyclomatic complexity: 39 Second operand has 9 states, 8 states have (on average 3.5) internal successors, (28), 9 states have internal predecessors, (28), 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) [2021-10-28 23:41:50,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:41:50,673 INFO L93 Difference]: Finished difference Result 180 states and 220 transitions. [2021-10-28 23:41:50,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:41:50,674 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 180 states and 220 transitions. [2021-10-28 23:41:50,677 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 47 [2021-10-28 23:41:50,679 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 180 states to 180 states and 220 transitions. [2021-10-28 23:41:50,679 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 57 [2021-10-28 23:41:50,679 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2021-10-28 23:41:50,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 180 states and 220 transitions. [2021-10-28 23:41:50,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:41:50,682 INFO L681 BuchiCegarLoop]: Abstraction has 180 states and 220 transitions. [2021-10-28 23:41:50,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states and 220 transitions. [2021-10-28 23:41:50,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 151. [2021-10-28 23:41:50,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 151 states have (on average 1.2119205298013245) internal successors, (183), 150 states have internal predecessors, (183), 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) [2021-10-28 23:41:50,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 183 transitions. [2021-10-28 23:41:50,688 INFO L704 BuchiCegarLoop]: Abstraction has 151 states and 183 transitions. [2021-10-28 23:41:50,688 INFO L587 BuchiCegarLoop]: Abstraction has 151 states and 183 transitions. [2021-10-28 23:41:50,688 INFO L425 BuchiCegarLoop]: ======== Iteration 15============ [2021-10-28 23:41:50,688 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 151 states and 183 transitions. [2021-10-28 23:41:50,689 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 45 [2021-10-28 23:41:50,689 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:41:50,690 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:41:50,693 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [11, 9, 9, 7, 3, 2, 1, 1] [2021-10-28 23:41:50,693 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [10, 9, 9, 7, 3, 1, 1] [2021-10-28 23:41:50,694 INFO L791 eck$LassoCheckResult]: Stem: 4717#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 4718#L18-1 assume !!(main_~i~0 > 0); 4761#L12 assume 1 == main_~i~0;main_~up~0 := 1; 4758#L12-2 assume !(10 == main_~i~0); 4755#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4753#L18-1 assume !!(main_~i~0 > 0); 4751#L12 assume !(1 == main_~i~0); 4750#L12-2 assume !(10 == main_~i~0); 4749#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4746#L18-1 assume !!(main_~i~0 > 0); 4736#L12 assume !(1 == main_~i~0); 4739#L12-2 assume !(10 == main_~i~0); 4737#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4735#L18-1 assume !!(main_~i~0 > 0); 4733#L12 assume !(1 == main_~i~0); 4730#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 4719#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4720#L18-1 assume !!(main_~i~0 > 0); 4788#L12 assume !(1 == main_~i~0); 4787#L12-2 assume !(10 == main_~i~0); 4786#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4785#L18-1 assume !!(main_~i~0 > 0); 4784#L12 assume !(1 == main_~i~0); 4783#L12-2 assume !(10 == main_~i~0); 4782#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4781#L18-1 assume !!(main_~i~0 > 0); 4780#L12 assume !(1 == main_~i~0); 4779#L12-2 assume !(10 == main_~i~0); 4778#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4777#L18-1 assume !!(main_~i~0 > 0); 4776#L12 assume !(1 == main_~i~0); 4775#L12-2 assume !(10 == main_~i~0); 4774#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4773#L18-1 assume !!(main_~i~0 > 0); 4772#L12 assume !(1 == main_~i~0); 4771#L12-2 assume !(10 == main_~i~0); 4770#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4769#L18-1 assume !!(main_~i~0 > 0); 4768#L12 assume !(1 == main_~i~0); 4741#L12-2 assume !(10 == main_~i~0); 4747#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4744#L18-1 assume !!(main_~i~0 > 0); 4740#L12 assume 1 == main_~i~0;main_~up~0 := 1; 4738#L12-2 [2021-10-28 23:41:50,694 INFO L793 eck$LassoCheckResult]: Loop: 4738#L12-2 assume !(10 == main_~i~0); 4724#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4713#L18-1 assume !!(main_~i~0 > 0); 4714#L12 assume !(1 == main_~i~0); 4726#L12-2 assume !(10 == main_~i~0); 4727#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4834#L18-1 assume !!(main_~i~0 > 0); 4831#L12 assume !(1 == main_~i~0); 4829#L12-2 assume !(10 == main_~i~0); 4812#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4826#L18-1 assume !!(main_~i~0 > 0); 4819#L12 assume !(1 == main_~i~0); 4811#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 4710#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4725#L18-1 assume !!(main_~i~0 > 0); 4820#L12 assume !(1 == main_~i~0); 4813#L12-2 assume !(10 == main_~i~0); 4807#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4806#L18-1 assume !!(main_~i~0 > 0); 4805#L12 assume !(1 == main_~i~0); 4804#L12-2 assume !(10 == main_~i~0); 4803#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4802#L18-1 assume !!(main_~i~0 > 0); 4801#L12 assume !(1 == main_~i~0); 4800#L12-2 assume !(10 == main_~i~0); 4799#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4798#L18-1 assume !!(main_~i~0 > 0); 4797#L12 assume !(1 == main_~i~0); 4796#L12-2 assume !(10 == main_~i~0); 4795#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4794#L18-1 assume !!(main_~i~0 > 0); 4793#L12 assume !(1 == main_~i~0); 4792#L12-2 assume !(10 == main_~i~0); 4791#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4790#L18-1 assume !!(main_~i~0 > 0); 4789#L12 assume !(1 == main_~i~0); 4743#L12-2 assume !(10 == main_~i~0); 4748#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4745#L18-1 assume !!(main_~i~0 > 0); 4742#L12 assume 1 == main_~i~0;main_~up~0 := 1; 4738#L12-2 [2021-10-28 23:41:50,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:41:50,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1480489525, now seen corresponding path program 8 times [2021-10-28 23:41:50,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:41:50,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528900024] [2021-10-28 23:41:50,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:41:50,696 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:41:50,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:41:50,749 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 107 proven. 15 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-10-28 23:41:50,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:41:50,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528900024] [2021-10-28 23:41:50,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528900024] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:41:50,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418467080] [2021-10-28 23:41:50,750 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:41:50,751 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:41:50,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:50,755 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:41:50,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2021-10-28 23:41:50,924 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 23:41:50,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:41:50,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 23:41:50,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:41:51,034 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 107 proven. 15 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-10-28 23:41:51,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418467080] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:41:51,034 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:41:51,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-28 23:41:51,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832942467] [2021-10-28 23:41:51,035 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 23:41:51,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:41:51,036 INFO L85 PathProgramCache]: Analyzing trace with hash 505255529, now seen corresponding path program 6 times [2021-10-28 23:41:51,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:41:51,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565891924] [2021-10-28 23:41:51,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:41:51,036 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:41:51,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:41:51,112 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 87 proven. 78 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-28 23:41:51,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:41:51,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565891924] [2021-10-28 23:41:51,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565891924] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:41:51,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010051693] [2021-10-28 23:41:51,113 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-28 23:41:51,113 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:41:51,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:51,114 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:41:51,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2021-10-28 23:41:51,304 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-10-28 23:41:51,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:41:51,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 23:41:51,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:41:51,432 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 87 proven. 78 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-28 23:41:51,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010051693] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:41:51,432 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:41:51,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-10-28 23:41:51,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288223291] [2021-10-28 23:41:51,433 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:41:51,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:41:51,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:41:51,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:41:51,435 INFO L87 Difference]: Start difference. First operand 151 states and 183 transitions. cyclomatic complexity: 41 Second operand has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 10 states have internal predecessors, (32), 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) [2021-10-28 23:41:51,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:41:51,508 INFO L93 Difference]: Finished difference Result 196 states and 239 transitions. [2021-10-28 23:41:51,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 23:41:51,509 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 196 states and 239 transitions. [2021-10-28 23:41:51,511 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 51 [2021-10-28 23:41:51,513 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 196 states to 196 states and 239 transitions. [2021-10-28 23:41:51,513 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 61 [2021-10-28 23:41:51,514 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 61 [2021-10-28 23:41:51,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 196 states and 239 transitions. [2021-10-28 23:41:51,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:41:51,514 INFO L681 BuchiCegarLoop]: Abstraction has 196 states and 239 transitions. [2021-10-28 23:41:51,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states and 239 transitions. [2021-10-28 23:41:51,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 163. [2021-10-28 23:41:51,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 163 states have (on average 1.2085889570552146) internal successors, (197), 162 states have internal predecessors, (197), 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) [2021-10-28 23:41:51,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 197 transitions. [2021-10-28 23:41:51,519 INFO L704 BuchiCegarLoop]: Abstraction has 163 states and 197 transitions. [2021-10-28 23:41:51,520 INFO L587 BuchiCegarLoop]: Abstraction has 163 states and 197 transitions. [2021-10-28 23:41:51,520 INFO L425 BuchiCegarLoop]: ======== Iteration 16============ [2021-10-28 23:41:51,520 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 163 states and 197 transitions. [2021-10-28 23:41:51,521 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 49 [2021-10-28 23:41:51,521 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:41:51,521 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:41:51,523 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [12, 10, 10, 8, 3, 2, 1, 1] [2021-10-28 23:41:51,523 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [11, 10, 10, 8, 3, 1, 1] [2021-10-28 23:41:51,523 INFO L791 eck$LassoCheckResult]: Stem: 5320#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 5321#L18-1 assume !!(main_~i~0 > 0); 5370#L12 assume 1 == main_~i~0;main_~up~0 := 1; 5367#L12-2 assume !(10 == main_~i~0); 5364#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5362#L18-1 assume !!(main_~i~0 > 0); 5360#L12 assume !(1 == main_~i~0); 5359#L12-2 assume !(10 == main_~i~0); 5358#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5355#L18-1 assume !!(main_~i~0 > 0); 5345#L12 assume !(1 == main_~i~0); 5348#L12-2 assume !(10 == main_~i~0); 5346#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5344#L18-1 assume !!(main_~i~0 > 0); 5342#L12 assume !(1 == main_~i~0); 5339#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 5326#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5327#L18-1 assume !!(main_~i~0 > 0); 5456#L12 assume !(1 == main_~i~0); 5455#L12-2 assume !(10 == main_~i~0); 5454#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5453#L18-1 assume !!(main_~i~0 > 0); 5452#L12 assume !(1 == main_~i~0); 5451#L12-2 assume !(10 == main_~i~0); 5450#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5449#L18-1 assume !!(main_~i~0 > 0); 5448#L12 assume !(1 == main_~i~0); 5447#L12-2 assume !(10 == main_~i~0); 5446#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5445#L18-1 assume !!(main_~i~0 > 0); 5444#L12 assume !(1 == main_~i~0); 5443#L12-2 assume !(10 == main_~i~0); 5428#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5425#L18-1 assume !!(main_~i~0 > 0); 5422#L12 assume !(1 == main_~i~0); 5420#L12-2 assume !(10 == main_~i~0); 5417#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5414#L18-1 assume !!(main_~i~0 > 0); 5411#L12 assume !(1 == main_~i~0); 5409#L12-2 assume !(10 == main_~i~0); 5407#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5404#L18-1 assume !!(main_~i~0 > 0); 5401#L12 assume !(1 == main_~i~0); 5352#L12-2 assume !(10 == main_~i~0); 5357#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5354#L18-1 assume !!(main_~i~0 > 0); 5351#L12 assume 1 == main_~i~0;main_~up~0 := 1; 5347#L12-2 [2021-10-28 23:41:51,523 INFO L793 eck$LassoCheckResult]: Loop: 5347#L12-2 assume !(10 == main_~i~0); 5337#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5322#L18-1 assume !!(main_~i~0 > 0); 5323#L12 assume !(1 == main_~i~0); 5433#L12-2 assume !(10 == main_~i~0); 5431#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5429#L18-1 assume !!(main_~i~0 > 0); 5426#L12 assume !(1 == main_~i~0); 5423#L12-2 assume !(10 == main_~i~0); 5413#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5418#L18-1 assume !!(main_~i~0 > 0); 5415#L12 assume !(1 == main_~i~0); 5412#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 5317#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5333#L18-1 assume !!(main_~i~0 > 0); 5403#L12 assume !(1 == main_~i~0); 5400#L12-2 assume !(10 == main_~i~0); 5399#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5398#L18-1 assume !!(main_~i~0 > 0); 5397#L12 assume !(1 == main_~i~0); 5396#L12-2 assume !(10 == main_~i~0); 5395#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5394#L18-1 assume !!(main_~i~0 > 0); 5393#L12 assume !(1 == main_~i~0); 5392#L12-2 assume !(10 == main_~i~0); 5391#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5390#L18-1 assume !!(main_~i~0 > 0); 5389#L12 assume !(1 == main_~i~0); 5388#L12-2 assume !(10 == main_~i~0); 5387#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5386#L18-1 assume !!(main_~i~0 > 0); 5385#L12 assume !(1 == main_~i~0); 5384#L12-2 assume !(10 == main_~i~0); 5383#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5382#L18-1 assume !!(main_~i~0 > 0); 5381#L12 assume !(1 == main_~i~0); 5380#L12-2 assume !(10 == main_~i~0); 5379#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5378#L18-1 assume !!(main_~i~0 > 0); 5377#L12 assume !(1 == main_~i~0); 5350#L12-2 assume !(10 == main_~i~0); 5356#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5353#L18-1 assume !!(main_~i~0 > 0); 5349#L12 assume 1 == main_~i~0;main_~up~0 := 1; 5347#L12-2 [2021-10-28 23:41:51,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:41:51,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1019857334, now seen corresponding path program 9 times [2021-10-28 23:41:51,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:41:51,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752887732] [2021-10-28 23:41:51,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:41:51,525 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:41:51,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:41:51,568 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 122 proven. 15 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-10-28 23:41:51,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:41:51,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752887732] [2021-10-28 23:41:51,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752887732] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:41:51,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658777223] [2021-10-28 23:41:51,569 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 23:41:51,569 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:41:51,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:51,572 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:41:51,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2021-10-28 23:41:51,801 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-10-28 23:41:51,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:41:51,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 23:41:51,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:41:52,048 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 116 proven. 105 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-10-28 23:41:52,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658777223] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:41:52,049 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:41:52,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10] total 15 [2021-10-28 23:41:52,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531170122] [2021-10-28 23:41:52,050 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 23:41:52,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:41:52,050 INFO L85 PathProgramCache]: Analyzing trace with hash 256924500, now seen corresponding path program 7 times [2021-10-28 23:41:52,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:41:52,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754398495] [2021-10-28 23:41:52,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:41:52,051 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:41:52,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:41:52,142 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 100 proven. 105 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-28 23:41:52,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:41:52,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754398495] [2021-10-28 23:41:52,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754398495] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:41:52,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743862084] [2021-10-28 23:41:52,143 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-28 23:41:52,143 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:41:52,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:52,145 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:41:52,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2021-10-28 23:41:52,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:41:52,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 23:41:52,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:41:52,538 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 100 proven. 105 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-28 23:41:52,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743862084] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:41:52,538 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:41:52,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-10-28 23:41:52,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634076491] [2021-10-28 23:41:52,538 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:41:52,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:41:52,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 23:41:52,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:41:52,540 INFO L87 Difference]: Start difference. First operand 163 states and 197 transitions. cyclomatic complexity: 43 Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 11 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) [2021-10-28 23:41:52,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:41:52,603 INFO L93 Difference]: Finished difference Result 212 states and 258 transitions. [2021-10-28 23:41:52,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 23:41:52,604 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 212 states and 258 transitions. [2021-10-28 23:41:52,606 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 55 [2021-10-28 23:41:52,608 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 212 states to 212 states and 258 transitions. [2021-10-28 23:41:52,609 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 65 [2021-10-28 23:41:52,609 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 65 [2021-10-28 23:41:52,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 212 states and 258 transitions. [2021-10-28 23:41:52,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:41:52,610 INFO L681 BuchiCegarLoop]: Abstraction has 212 states and 258 transitions. [2021-10-28 23:41:52,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states and 258 transitions. [2021-10-28 23:41:52,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 175. [2021-10-28 23:41:52,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 175 states have (on average 1.2057142857142857) internal successors, (211), 174 states have internal predecessors, (211), 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) [2021-10-28 23:41:52,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 211 transitions. [2021-10-28 23:41:52,615 INFO L704 BuchiCegarLoop]: Abstraction has 175 states and 211 transitions. [2021-10-28 23:41:52,615 INFO L587 BuchiCegarLoop]: Abstraction has 175 states and 211 transitions. [2021-10-28 23:41:52,616 INFO L425 BuchiCegarLoop]: ======== Iteration 17============ [2021-10-28 23:41:52,616 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 175 states and 211 transitions. [2021-10-28 23:41:52,617 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 53 [2021-10-28 23:41:52,617 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:41:52,617 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:41:52,619 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [13, 11, 11, 9, 3, 2, 1, 1] [2021-10-28 23:41:52,619 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [12, 11, 11, 9, 3, 1, 1] [2021-10-28 23:41:52,619 INFO L791 eck$LassoCheckResult]: Stem: 5989#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 5990#L18-1 assume !!(main_~i~0 > 0); 6039#L12 assume 1 == main_~i~0;main_~up~0 := 1; 6034#L12-2 assume !(10 == main_~i~0); 6032#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 6030#L18-1 assume !!(main_~i~0 > 0); 6029#L12 assume !(1 == main_~i~0); 6028#L12-2 assume !(10 == main_~i~0); 6027#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 6024#L18-1 assume !!(main_~i~0 > 0); 6014#L12 assume !(1 == main_~i~0); 6017#L12-2 assume !(10 == main_~i~0); 6015#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 6013#L18-1 assume !!(main_~i~0 > 0); 6011#L12 assume !(1 == main_~i~0); 6008#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 5995#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5996#L18-1 assume !!(main_~i~0 > 0); 6133#L12 assume !(1 == main_~i~0); 6132#L12-2 assume !(10 == main_~i~0); 6131#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 6130#L18-1 assume !!(main_~i~0 > 0); 6129#L12 assume !(1 == main_~i~0); 6128#L12-2 assume !(10 == main_~i~0); 6127#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 6126#L18-1 assume !!(main_~i~0 > 0); 6125#L12 assume !(1 == main_~i~0); 6124#L12-2 assume !(10 == main_~i~0); 6123#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 6122#L18-1 assume !!(main_~i~0 > 0); 6121#L12 assume !(1 == main_~i~0); 6120#L12-2 assume !(10 == main_~i~0); 6119#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 6118#L18-1 assume !!(main_~i~0 > 0); 6117#L12 assume !(1 == main_~i~0); 6116#L12-2 assume !(10 == main_~i~0); 6101#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 6098#L18-1 assume !!(main_~i~0 > 0); 6095#L12 assume !(1 == main_~i~0); 6093#L12-2 assume !(10 == main_~i~0); 6090#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 6087#L18-1 assume !!(main_~i~0 > 0); 6084#L12 assume !(1 == main_~i~0); 6082#L12-2 assume !(10 == main_~i~0); 6080#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 6077#L18-1 assume !!(main_~i~0 > 0); 6074#L12 assume !(1 == main_~i~0); 6019#L12-2 assume !(10 == main_~i~0); 6025#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 6022#L18-1 assume !!(main_~i~0 > 0); 6018#L12 assume 1 == main_~i~0;main_~up~0 := 1; 6016#L12-2 [2021-10-28 23:41:52,620 INFO L793 eck$LassoCheckResult]: Loop: 6016#L12-2 assume !(10 == main_~i~0); 6006#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5991#L18-1 assume !!(main_~i~0 > 0); 5992#L12 assume !(1 == main_~i~0); 6106#L12-2 assume !(10 == main_~i~0); 6104#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 6102#L18-1 assume !!(main_~i~0 > 0); 6099#L12 assume !(1 == main_~i~0); 6096#L12-2 assume !(10 == main_~i~0); 6086#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 6091#L18-1 assume !!(main_~i~0 > 0); 6088#L12 assume !(1 == main_~i~0); 6085#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 5986#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 6002#L18-1 assume !!(main_~i~0 > 0); 6076#L12 assume !(1 == main_~i~0); 6073#L12-2 assume !(10 == main_~i~0); 6072#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 6071#L18-1 assume !!(main_~i~0 > 0); 6070#L12 assume !(1 == main_~i~0); 6069#L12-2 assume !(10 == main_~i~0); 6068#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 6067#L18-1 assume !!(main_~i~0 > 0); 6066#L12 assume !(1 == main_~i~0); 6065#L12-2 assume !(10 == main_~i~0); 6064#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 6063#L18-1 assume !!(main_~i~0 > 0); 6062#L12 assume !(1 == main_~i~0); 6061#L12-2 assume !(10 == main_~i~0); 6060#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 6059#L18-1 assume !!(main_~i~0 > 0); 6058#L12 assume !(1 == main_~i~0); 6057#L12-2 assume !(10 == main_~i~0); 6056#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 6055#L18-1 assume !!(main_~i~0 > 0); 6054#L12 assume !(1 == main_~i~0); 6053#L12-2 assume !(10 == main_~i~0); 6052#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 6051#L18-1 assume !!(main_~i~0 > 0); 6050#L12 assume !(1 == main_~i~0); 6049#L12-2 assume !(10 == main_~i~0); 6048#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 6047#L18-1 assume !!(main_~i~0 > 0); 6046#L12 assume !(1 == main_~i~0); 6021#L12-2 assume !(10 == main_~i~0); 6026#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 6023#L18-1 assume !!(main_~i~0 > 0); 6020#L12 assume 1 == main_~i~0;main_~up~0 := 1; 6016#L12-2 [2021-10-28 23:41:52,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:41:52,620 INFO L85 PathProgramCache]: Analyzing trace with hash -890757087, now seen corresponding path program 10 times [2021-10-28 23:41:52,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:41:52,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030464957] [2021-10-28 23:41:52,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:41:52,621 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:41:52,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:41:52,663 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 137 proven. 15 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-28 23:41:52,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:41:52,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030464957] [2021-10-28 23:41:52,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030464957] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:41:52,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871796884] [2021-10-28 23:41:52,664 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 23:41:52,664 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:41:52,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:52,667 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:41:52,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2021-10-28 23:41:52,911 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 23:41:52,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:41:52,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 23:41:52,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:41:53,016 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 137 proven. 15 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-28 23:41:53,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871796884] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:41:53,017 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:41:53,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-28 23:41:53,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037516716] [2021-10-28 23:41:53,018 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 23:41:53,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:41:53,018 INFO L85 PathProgramCache]: Analyzing trace with hash -294604097, now seen corresponding path program 8 times [2021-10-28 23:41:53,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:41:53,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206223247] [2021-10-28 23:41:53,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:41:53,019 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:41:53,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:41:53,027 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:41:53,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:41:53,036 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:41:53,294 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:41:53,294 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:41:53,294 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:41:53,294 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:41:53,295 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:41:53,295 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:53,295 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:41:53,295 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:41:53,295 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration17_Loop [2021-10-28 23:41:53,295 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:41:53,295 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:41:53,296 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:53,301 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:53,304 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:53,306 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:53,359 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:41:53,360 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:41:53,360 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:53,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:53,362 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:53,364 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:41:53,364 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:41:53,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Waiting until timeout for monitored process [2021-10-28 23:41:53,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:53,427 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:53,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:53,428 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:53,431 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:41:53,431 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:41:53,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Waiting until timeout for monitored process [2021-10-28 23:41:53,451 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 23:41:53,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:53,492 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:41:53,492 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:41:53,492 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:41:53,492 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:41:53,492 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:41:53,493 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:53,493 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:41:53,493 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:41:53,493 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration17_Loop [2021-10-28 23:41:53,493 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:41:53,493 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:41:53,494 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:53,497 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:53,502 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:53,504 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:53,563 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:41:53,563 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:41:53,564 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:53,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:53,574 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:53,577 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 [2021-10-28 23:41:53,588 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:41:53,589 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:41:53,589 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:41:53,589 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:41:53,591 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:41:53,591 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:41:53,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Waiting until timeout for monitored process [2021-10-28 23:41:53,602 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:41:53,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:53,644 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:53,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:53,645 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:53,647 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 [2021-10-28 23:41:53,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (83)] Waiting until timeout for monitored process [2021-10-28 23:41:53,656 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:41:53,656 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:41:53,657 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:41:53,657 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:41:53,657 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:41:53,657 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:41:53,657 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:41:53,659 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:41:53,661 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-28 23:41:53,661 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 23:41:53,661 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:53,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:53,663 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:53,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (84)] Waiting until timeout for monitored process [2021-10-28 23:41:53,664 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:41:53,664 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 23:41:53,664 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:41:53,664 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-28 23:41:53,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (83)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:53,688 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 23:41:53,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:41:53,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:41:53,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:41:53,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:41:53,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:41:53,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 23:41:53,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:41:54,087 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-28 23:41:54,087 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2021-10-28 23:41:54,088 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 175 states and 211 transitions. cyclomatic complexity: 45 Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 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) [2021-10-28 23:41:54,291 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 175 states and 211 transitions. cyclomatic complexity: 45. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 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 689 states and 821 transitions. Complement of second has 19 states. [2021-10-28 23:41:54,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 1 stem states 8 non-accepting loop states 1 accepting loop states [2021-10-28 23:41:54,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 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) [2021-10-28 23:41:54,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 47 transitions. [2021-10-28 23:41:54,292 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 47 transitions. Stem has 51 letters. Loop has 48 letters. [2021-10-28 23:41:54,293 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:41:54,293 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 47 transitions. Stem has 99 letters. Loop has 48 letters. [2021-10-28 23:41:54,294 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:41:54,294 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 47 transitions. Stem has 51 letters. Loop has 96 letters. [2021-10-28 23:41:54,295 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:41:54,295 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 689 states and 821 transitions. [2021-10-28 23:41:54,302 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 57 [2021-10-28 23:41:54,307 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 689 states to 536 states and 633 transitions. [2021-10-28 23:41:54,308 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 121 [2021-10-28 23:41:54,308 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 127 [2021-10-28 23:41:54,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 536 states and 633 transitions. [2021-10-28 23:41:54,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:41:54,309 INFO L681 BuchiCegarLoop]: Abstraction has 536 states and 633 transitions. [2021-10-28 23:41:54,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states and 633 transitions. [2021-10-28 23:41:54,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 405. [2021-10-28 23:41:54,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 405 states have (on average 1.1950617283950618) internal successors, (484), 404 states have internal predecessors, (484), 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) [2021-10-28 23:41:54,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 484 transitions. [2021-10-28 23:41:54,322 INFO L704 BuchiCegarLoop]: Abstraction has 405 states and 484 transitions. [2021-10-28 23:41:54,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:41:54,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:41:54,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:41:54,323 INFO L87 Difference]: Start difference. First operand 405 states and 484 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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) [2021-10-28 23:41:54,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:41:54,365 INFO L93 Difference]: Finished difference Result 277 states and 322 transitions. [2021-10-28 23:41:54,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:41:54,366 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 277 states and 322 transitions. [2021-10-28 23:41:54,368 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 71 [2021-10-28 23:41:54,371 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 277 states to 249 states and 294 transitions. [2021-10-28 23:41:54,371 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 68 [2021-10-28 23:41:54,371 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 68 [2021-10-28 23:41:54,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 249 states and 294 transitions. [2021-10-28 23:41:54,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:41:54,372 INFO L681 BuchiCegarLoop]: Abstraction has 249 states and 294 transitions. [2021-10-28 23:41:54,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states and 294 transitions. [2021-10-28 23:41:54,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 187. [2021-10-28 23:41:54,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 187 states have (on average 1.1925133689839573) internal successors, (223), 186 states have internal predecessors, (223), 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) [2021-10-28 23:41:54,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 223 transitions. [2021-10-28 23:41:54,378 INFO L704 BuchiCegarLoop]: Abstraction has 187 states and 223 transitions. [2021-10-28 23:41:54,378 INFO L587 BuchiCegarLoop]: Abstraction has 187 states and 223 transitions. [2021-10-28 23:41:54,378 INFO L425 BuchiCegarLoop]: ======== Iteration 18============ [2021-10-28 23:41:54,378 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 187 states and 223 transitions. [2021-10-28 23:41:54,380 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 57 [2021-10-28 23:41:54,380 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:41:54,380 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:41:54,381 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [14, 12, 12, 9, 4, 2, 1, 1] [2021-10-28 23:41:54,381 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [13, 12, 12, 9, 4, 1, 1] [2021-10-28 23:41:54,382 INFO L791 eck$LassoCheckResult]: Stem: 8033#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 8034#L18-1 assume !!(main_~i~0 > 0); 8155#L12 assume 1 == main_~i~0;main_~up~0 := 1; 8153#L12-2 assume !(10 == main_~i~0); 8046#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8047#L18-1 assume !!(main_~i~0 > 0); 8206#L12 assume !(1 == main_~i~0); 8204#L12-2 assume !(10 == main_~i~0); 8202#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8200#L18-1 assume !!(main_~i~0 > 0); 8198#L12 assume !(1 == main_~i~0); 8197#L12-2 assume !(10 == main_~i~0); 8164#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8161#L18-1 assume !!(main_~i~0 > 0); 8130#L12 assume !(1 == main_~i~0); 8139#L12-2 assume !(10 == main_~i~0); 8133#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8129#L18-1 assume !!(main_~i~0 > 0); 8126#L12 assume !(1 == main_~i~0); 8127#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 8039#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 8040#L18-1 assume !!(main_~i~0 > 0); 8125#L12 assume !(1 == main_~i~0); 8123#L12-2 assume !(10 == main_~i~0); 8121#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 8119#L18-1 assume !!(main_~i~0 > 0); 8117#L12 assume !(1 == main_~i~0); 8115#L12-2 assume !(10 == main_~i~0); 8113#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 8111#L18-1 assume !!(main_~i~0 > 0); 8109#L12 assume !(1 == main_~i~0); 8107#L12-2 assume !(10 == main_~i~0); 8105#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 8103#L18-1 assume !!(main_~i~0 > 0); 8101#L12 assume !(1 == main_~i~0); 8099#L12-2 assume !(10 == main_~i~0); 8097#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 8095#L18-1 assume !!(main_~i~0 > 0); 8093#L12 assume !(1 == main_~i~0); 8091#L12-2 assume !(10 == main_~i~0); 8089#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 8087#L18-1 assume !!(main_~i~0 > 0); 8085#L12 assume !(1 == main_~i~0); 8083#L12-2 assume !(10 == main_~i~0); 8081#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 8079#L18-1 assume !!(main_~i~0 > 0); 8077#L12 assume !(1 == main_~i~0); 8075#L12-2 assume !(10 == main_~i~0); 8073#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 8071#L18-1 assume !!(main_~i~0 > 0); 8069#L12 assume !(1 == main_~i~0); 8062#L12-2 assume !(10 == main_~i~0); 8066#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 8064#L18-1 assume !!(main_~i~0 > 0); 8061#L12 assume 1 == main_~i~0;main_~up~0 := 1; 8058#L12-2 [2021-10-28 23:41:54,382 INFO L793 eck$LassoCheckResult]: Loop: 8058#L12-2 assume !(10 == main_~i~0); 8053#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8151#L18-1 assume !!(main_~i~0 > 0); 8150#L12 assume !(1 == main_~i~0); 8149#L12-2 assume !(10 == main_~i~0); 8148#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8147#L18-1 assume !!(main_~i~0 > 0); 8146#L12 assume !(1 == main_~i~0); 8145#L12-2 assume !(10 == main_~i~0); 8144#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8143#L18-1 assume !!(main_~i~0 > 0); 8142#L12 assume !(1 == main_~i~0); 8141#L12-2 assume !(10 == main_~i~0); 8132#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8137#L18-1 assume !!(main_~i~0 > 0); 8134#L12 assume !(1 == main_~i~0); 8131#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 8030#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 8048#L18-1 assume !!(main_~i~0 > 0); 8124#L12 assume !(1 == main_~i~0); 8122#L12-2 assume !(10 == main_~i~0); 8120#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 8118#L18-1 assume !!(main_~i~0 > 0); 8116#L12 assume !(1 == main_~i~0); 8114#L12-2 assume !(10 == main_~i~0); 8112#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 8110#L18-1 assume !!(main_~i~0 > 0); 8108#L12 assume !(1 == main_~i~0); 8106#L12-2 assume !(10 == main_~i~0); 8104#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 8102#L18-1 assume !!(main_~i~0 > 0); 8100#L12 assume !(1 == main_~i~0); 8098#L12-2 assume !(10 == main_~i~0); 8096#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 8094#L18-1 assume !!(main_~i~0 > 0); 8092#L12 assume !(1 == main_~i~0); 8090#L12-2 assume !(10 == main_~i~0); 8088#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 8086#L18-1 assume !!(main_~i~0 > 0); 8084#L12 assume !(1 == main_~i~0); 8082#L12-2 assume !(10 == main_~i~0); 8080#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 8078#L18-1 assume !!(main_~i~0 > 0); 8076#L12 assume !(1 == main_~i~0); 8074#L12-2 assume !(10 == main_~i~0); 8072#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 8070#L18-1 assume !!(main_~i~0 > 0); 8068#L12 assume !(1 == main_~i~0); 8060#L12-2 assume !(10 == main_~i~0); 8065#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 8063#L18-1 assume !!(main_~i~0 > 0); 8059#L12 assume 1 == main_~i~0;main_~up~0 := 1; 8058#L12-2 [2021-10-28 23:41:54,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:41:54,382 INFO L85 PathProgramCache]: Analyzing trace with hash 260754314, now seen corresponding path program 11 times [2021-10-28 23:41:54,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:41:54,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750542587] [2021-10-28 23:41:54,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:41:54,383 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:41:54,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:41:54,438 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 174 proven. 28 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-28 23:41:54,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:41:54,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750542587] [2021-10-28 23:41:54,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750542587] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:41:54,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897478500] [2021-10-28 23:41:54,439 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 23:41:54,439 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:41:54,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:54,440 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:41:54,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2021-10-28 23:41:54,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (84)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:54,772 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-10-28 23:41:54,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:41:54,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 23:41:54,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:41:54,909 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 174 proven. 28 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-28 23:41:54,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897478500] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:41:54,909 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:41:54,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-10-28 23:41:54,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916346260] [2021-10-28 23:41:54,910 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 23:41:54,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:41:54,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1093459752, now seen corresponding path program 9 times [2021-10-28 23:41:54,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:41:54,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702822261] [2021-10-28 23:41:54,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:41:54,911 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:41:54,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:41:54,919 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:41:54,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:41:54,926 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:41:55,141 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:41:55,141 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:41:55,141 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:41:55,141 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:41:55,141 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:41:55,141 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:55,141 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:41:55,141 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:41:55,141 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration18_Loop [2021-10-28 23:41:55,141 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:41:55,142 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:41:55,142 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:55,145 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:55,149 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:55,153 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:55,195 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:41:55,196 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:41:55,196 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:55,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:55,199 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:55,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (86)] Waiting until timeout for monitored process [2021-10-28 23:41:55,200 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:41:55,200 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:41:55,215 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:41:55,216 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_16=1} Honda state: {v_rep~unnamed0~0~true_16=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:41:55,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (86)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:55,240 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:55,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:55,241 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:55,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (87)] Waiting until timeout for monitored process [2021-10-28 23:41:55,243 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:41:55,243 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:41:55,253 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:41:55,253 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=1} Honda state: {ULTIMATE.start_main_~up~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:41:55,277 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (87)] Ended with exit code 0 [2021-10-28 23:41:55,277 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:55,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:55,278 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:55,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (88)] Waiting until timeout for monitored process [2021-10-28 23:41:55,279 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:41:55,279 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:41:55,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (88)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:55,318 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:55,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:55,319 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:55,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (89)] Waiting until timeout for monitored process [2021-10-28 23:41:55,328 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:41:55,329 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:41:55,350 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 23:41:55,375 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (89)] Ended with exit code 0 [2021-10-28 23:41:55,375 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:41:55,375 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:41:55,375 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:41:55,375 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:41:55,375 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:41:55,375 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:55,375 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:41:55,376 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:41:55,376 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration18_Loop [2021-10-28 23:41:55,376 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:41:55,376 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:41:55,378 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:55,381 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:55,385 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:55,390 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:55,430 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:41:55,430 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:41:55,431 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:55,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:55,431 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:55,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (90)] Waiting until timeout for monitored process [2021-10-28 23:41:55,433 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 [2021-10-28 23:41:55,441 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:41:55,441 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:41:55,441 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:41:55,441 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:41:55,443 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:41:55,443 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:41:55,461 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:41:55,485 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (90)] Ended with exit code 0 [2021-10-28 23:41:55,485 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:55,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:55,486 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:55,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (91)] Waiting until timeout for monitored process [2021-10-28 23:41:55,488 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 [2021-10-28 23:41:55,497 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:41:55,497 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:41:55,497 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:41:55,497 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:41:55,497 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:41:55,498 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:41:55,498 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:41:55,500 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:41:55,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (91)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:55,524 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:55,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:55,525 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:55,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (92)] Waiting until timeout for monitored process [2021-10-28 23:41:55,528 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 [2021-10-28 23:41:55,537 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:41:55,537 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:41:55,537 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:41:55,537 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:41:55,537 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:41:55,538 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:41:55,538 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:41:55,545 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:41:55,547 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 23:41:55,547 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 23:41:55,548 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:55,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:55,549 INFO L229 MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:55,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (93)] Waiting until timeout for monitored process [2021-10-28 23:41:55,550 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:41:55,550 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 23:41:55,550 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:41:55,550 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-28 23:41:55,578 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (92)] Ended with exit code 0 [2021-10-28 23:41:55,578 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 23:41:55,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:41:55,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:41:55,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:41:55,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:41:55,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (93)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:55,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:41:55,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 23:41:55,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:41:56,028 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-28 23:41:56,029 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 6 loop predicates [2021-10-28 23:41:56,029 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 187 states and 223 transitions. cyclomatic complexity: 45 Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 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) [2021-10-28 23:41:56,273 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 187 states and 223 transitions. cyclomatic complexity: 45. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 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 905 states and 1062 transitions. Complement of second has 23 states. [2021-10-28 23:41:56,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 1 stem states 10 non-accepting loop states 1 accepting loop states [2021-10-28 23:41:56,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 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) [2021-10-28 23:41:56,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 57 transitions. [2021-10-28 23:41:56,279 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 57 transitions. Stem has 55 letters. Loop has 52 letters. [2021-10-28 23:41:56,280 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:41:56,280 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 57 transitions. Stem has 107 letters. Loop has 52 letters. [2021-10-28 23:41:56,280 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:41:56,281 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 57 transitions. Stem has 55 letters. Loop has 104 letters. [2021-10-28 23:41:56,282 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:41:56,282 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 905 states and 1062 transitions. [2021-10-28 23:41:56,291 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 61 [2021-10-28 23:41:56,297 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 905 states to 664 states and 777 transitions. [2021-10-28 23:41:56,297 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 142 [2021-10-28 23:41:56,298 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 149 [2021-10-28 23:41:56,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 664 states and 777 transitions. [2021-10-28 23:41:56,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:41:56,298 INFO L681 BuchiCegarLoop]: Abstraction has 664 states and 777 transitions. [2021-10-28 23:41:56,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states and 777 transitions. [2021-10-28 23:41:56,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 461. [2021-10-28 23:41:56,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 461 states have (on average 1.193058568329718) internal successors, (550), 460 states have internal predecessors, (550), 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) [2021-10-28 23:41:56,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 550 transitions. [2021-10-28 23:41:56,313 INFO L704 BuchiCegarLoop]: Abstraction has 461 states and 550 transitions. [2021-10-28 23:41:56,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:41:56,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:41:56,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:41:56,314 INFO L87 Difference]: Start difference. First operand 461 states and 550 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 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) [2021-10-28 23:41:56,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:41:56,353 INFO L93 Difference]: Finished difference Result 317 states and 365 transitions. [2021-10-28 23:41:56,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:41:56,354 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 317 states and 365 transitions. [2021-10-28 23:41:56,357 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 79 [2021-10-28 23:41:56,359 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 317 states to 281 states and 329 transitions. [2021-10-28 23:41:56,360 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 72 [2021-10-28 23:41:56,360 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 72 [2021-10-28 23:41:56,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 281 states and 329 transitions. [2021-10-28 23:41:56,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:41:56,361 INFO L681 BuchiCegarLoop]: Abstraction has 281 states and 329 transitions. [2021-10-28 23:41:56,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states and 329 transitions. [2021-10-28 23:41:56,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 199. [2021-10-28 23:41:56,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 199 states have (on average 1.1809045226130652) internal successors, (235), 198 states have internal predecessors, (235), 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) [2021-10-28 23:41:56,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 235 transitions. [2021-10-28 23:41:56,367 INFO L704 BuchiCegarLoop]: Abstraction has 199 states and 235 transitions. [2021-10-28 23:41:56,367 INFO L587 BuchiCegarLoop]: Abstraction has 199 states and 235 transitions. [2021-10-28 23:41:56,367 INFO L425 BuchiCegarLoop]: ======== Iteration 19============ [2021-10-28 23:41:56,367 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 199 states and 235 transitions. [2021-10-28 23:41:56,369 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 61 [2021-10-28 23:41:56,369 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:41:56,369 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:41:56,370 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [15, 13, 13, 9, 5, 2, 1, 1] [2021-10-28 23:41:56,370 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [14, 13, 13, 9, 5, 1, 1] [2021-10-28 23:41:56,371 INFO L791 eck$LassoCheckResult]: Stem: 10450#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 10451#L18-1 assume !!(main_~i~0 > 0); 10571#L12 assume 1 == main_~i~0;main_~up~0 := 1; 10569#L12-2 assume !(10 == main_~i~0); 10458#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10459#L18-1 assume !!(main_~i~0 > 0); 10632#L12 assume !(1 == main_~i~0); 10630#L12-2 assume !(10 == main_~i~0); 10628#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10626#L18-1 assume !!(main_~i~0 > 0); 10624#L12 assume !(1 == main_~i~0); 10622#L12-2 assume !(10 == main_~i~0); 10620#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10618#L18-1 assume !!(main_~i~0 > 0); 10616#L12 assume !(1 == main_~i~0); 10614#L12-2 assume !(10 == main_~i~0); 10613#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10580#L18-1 assume !!(main_~i~0 > 0); 10550#L12 assume !(1 == main_~i~0); 10575#L12-2 assume !(10 == main_~i~0); 10551#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10549#L18-1 assume !!(main_~i~0 > 0); 10543#L12 assume !(1 == main_~i~0); 10442#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 10443#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 10452#L18-1 assume !!(main_~i~0 > 0); 10537#L12 assume !(1 == main_~i~0); 10535#L12-2 assume !(10 == main_~i~0); 10533#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 10531#L18-1 assume !!(main_~i~0 > 0); 10529#L12 assume !(1 == main_~i~0); 10527#L12-2 assume !(10 == main_~i~0); 10525#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 10523#L18-1 assume !!(main_~i~0 > 0); 10521#L12 assume !(1 == main_~i~0); 10519#L12-2 assume !(10 == main_~i~0); 10517#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 10515#L18-1 assume !!(main_~i~0 > 0); 10513#L12 assume !(1 == main_~i~0); 10511#L12-2 assume !(10 == main_~i~0); 10509#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 10507#L18-1 assume !!(main_~i~0 > 0); 10505#L12 assume !(1 == main_~i~0); 10503#L12-2 assume !(10 == main_~i~0); 10501#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 10499#L18-1 assume !!(main_~i~0 > 0); 10497#L12 assume !(1 == main_~i~0); 10495#L12-2 assume !(10 == main_~i~0); 10493#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 10491#L18-1 assume !!(main_~i~0 > 0); 10489#L12 assume !(1 == main_~i~0); 10487#L12-2 assume !(10 == main_~i~0); 10485#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 10483#L18-1 assume !!(main_~i~0 > 0); 10481#L12 assume !(1 == main_~i~0); 10473#L12-2 assume !(10 == main_~i~0); 10478#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 10476#L18-1 assume !!(main_~i~0 > 0); 10472#L12 assume 1 == main_~i~0;main_~up~0 := 1; 10471#L12-2 [2021-10-28 23:41:56,371 INFO L793 eck$LassoCheckResult]: Loop: 10471#L12-2 assume !(10 == main_~i~0); 10466#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10567#L18-1 assume !!(main_~i~0 > 0); 10566#L12 assume !(1 == main_~i~0); 10565#L12-2 assume !(10 == main_~i~0); 10564#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10563#L18-1 assume !!(main_~i~0 > 0); 10562#L12 assume !(1 == main_~i~0); 10561#L12-2 assume !(10 == main_~i~0); 10560#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10559#L18-1 assume !!(main_~i~0 > 0); 10558#L12 assume !(1 == main_~i~0); 10557#L12-2 assume !(10 == main_~i~0); 10556#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10555#L18-1 assume !!(main_~i~0 > 0); 10554#L12 assume !(1 == main_~i~0); 10553#L12-2 assume !(10 == main_~i~0); 10542#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10548#L18-1 assume !!(main_~i~0 > 0); 10546#L12 assume !(1 == main_~i~0); 10541#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 10460#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 10461#L18-1 assume !!(main_~i~0 > 0); 10538#L12 assume !(1 == main_~i~0); 10536#L12-2 assume !(10 == main_~i~0); 10534#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 10532#L18-1 assume !!(main_~i~0 > 0); 10530#L12 assume !(1 == main_~i~0); 10528#L12-2 assume !(10 == main_~i~0); 10526#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 10524#L18-1 assume !!(main_~i~0 > 0); 10522#L12 assume !(1 == main_~i~0); 10520#L12-2 assume !(10 == main_~i~0); 10518#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 10516#L18-1 assume !!(main_~i~0 > 0); 10514#L12 assume !(1 == main_~i~0); 10512#L12-2 assume !(10 == main_~i~0); 10510#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 10508#L18-1 assume !!(main_~i~0 > 0); 10506#L12 assume !(1 == main_~i~0); 10504#L12-2 assume !(10 == main_~i~0); 10502#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 10500#L18-1 assume !!(main_~i~0 > 0); 10498#L12 assume !(1 == main_~i~0); 10496#L12-2 assume !(10 == main_~i~0); 10494#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 10492#L18-1 assume !!(main_~i~0 > 0); 10490#L12 assume !(1 == main_~i~0); 10488#L12-2 assume !(10 == main_~i~0); 10486#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 10484#L18-1 assume !!(main_~i~0 > 0); 10482#L12 assume !(1 == main_~i~0); 10475#L12-2 assume !(10 == main_~i~0); 10479#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 10477#L18-1 assume !!(main_~i~0 > 0); 10474#L12 assume 1 == main_~i~0;main_~up~0 := 1; 10471#L12-2 [2021-10-28 23:41:56,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:41:56,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1566074253, now seen corresponding path program 12 times [2021-10-28 23:41:56,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:41:56,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840695005] [2021-10-28 23:41:56,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:41:56,372 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:41:56,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:41:56,434 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 211 proven. 45 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-28 23:41:56,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:41:56,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840695005] [2021-10-28 23:41:56,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840695005] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:41:56,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118570312] [2021-10-28 23:41:56,435 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-28 23:41:56,435 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:41:56,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:56,440 INFO L229 MonitoredProcess]: Starting monitored process 94 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:41:56,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2021-10-28 23:41:56,795 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2021-10-28 23:41:56,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:41:56,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 23:41:56,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:41:56,933 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 211 proven. 45 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-28 23:41:56,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118570312] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:41:56,933 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:41:56,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-10-28 23:41:56,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995074803] [2021-10-28 23:41:56,934 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 23:41:56,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:41:56,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1203416849, now seen corresponding path program 10 times [2021-10-28 23:41:56,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:41:56,935 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335739673] [2021-10-28 23:41:56,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:41:56,936 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:41:56,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:41:56,948 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:41:56,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:41:56,958 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:41:57,292 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:41:57,292 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:41:57,292 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:41:57,292 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:41:57,292 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:41:57,292 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:57,292 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:41:57,292 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:41:57,293 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration19_Loop [2021-10-28 23:41:57,293 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:41:57,293 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:41:57,293 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:57,299 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:57,302 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:57,308 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:57,360 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:41:57,360 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:41:57,360 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:57,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:57,364 INFO L229 MonitoredProcess]: Starting monitored process 95 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:57,370 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:41:57,370 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:41:57,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (95)] Waiting until timeout for monitored process [2021-10-28 23:41:57,400 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:41:57,400 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=1} Honda state: {ULTIMATE.start_main_~up~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:41:57,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (95)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:57,441 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:57,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:57,444 INFO L229 MonitoredProcess]: Starting monitored process 96 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:57,446 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:41:57,446 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:41:57,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (96)] Waiting until timeout for monitored process [2021-10-28 23:41:57,469 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:41:57,470 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_18=1} Honda state: {v_rep~unnamed0~0~true_18=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:41:57,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (96)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:57,510 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:57,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:57,511 INFO L229 MonitoredProcess]: Starting monitored process 97 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:57,513 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:41:57,514 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:41:57,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (97)] Waiting until timeout for monitored process [2021-10-28 23:41:57,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (97)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:57,579 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:57,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:57,581 INFO L229 MonitoredProcess]: Starting monitored process 98 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:57,584 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:41:57,584 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:41:57,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (98)] Waiting until timeout for monitored process [2021-10-28 23:41:57,607 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 23:41:57,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (98)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:57,652 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:41:57,652 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:41:57,652 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:41:57,652 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:41:57,652 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:41:57,652 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:57,653 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:41:57,653 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:41:57,653 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration19_Loop [2021-10-28 23:41:57,653 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:41:57,653 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:41:57,654 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:57,660 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:57,665 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:57,669 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:57,719 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:41:57,720 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:41:57,720 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:57,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:57,721 INFO L229 MonitoredProcess]: Starting monitored process 99 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:57,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (99)] Waiting until timeout for monitored process [2021-10-28 23:41:57,723 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 [2021-10-28 23:41:57,731 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:41:57,731 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:41:57,731 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:41:57,731 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:41:57,732 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:41:57,732 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:41:57,732 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:41:57,734 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:41:57,758 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (99)] Ended with exit code 0 [2021-10-28 23:41:57,759 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:57,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:57,759 INFO L229 MonitoredProcess]: Starting monitored process 100 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:57,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (100)] Waiting until timeout for monitored process [2021-10-28 23:41:57,761 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 [2021-10-28 23:41:57,770 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:41:57,770 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:41:57,771 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:41:57,771 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:41:57,771 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:41:57,771 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:41:57,771 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:41:57,773 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:41:57,776 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 23:41:57,776 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 23:41:57,776 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:57,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:57,778 INFO L229 MonitoredProcess]: Starting monitored process 101 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:57,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (101)] Waiting until timeout for monitored process [2021-10-28 23:41:57,779 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:41:57,779 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 23:41:57,779 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:41:57,779 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-28 23:41:57,804 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (100)] Ended with exit code 0 [2021-10-28 23:41:57,804 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 23:41:57,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:41:57,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:41:57,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:41:57,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:41:58,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:41:58,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 23:41:58,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:41:58,270 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 228 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-28 23:41:58,271 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 7 loop predicates [2021-10-28 23:41:58,271 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 199 states and 235 transitions. cyclomatic complexity: 45 Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 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) [2021-10-28 23:41:58,593 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 199 states and 235 transitions. cyclomatic complexity: 45. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 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 1161 states and 1347 transitions. Complement of second has 27 states. [2021-10-28 23:41:58,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 14 states 1 stem states 12 non-accepting loop states 1 accepting loop states [2021-10-28 23:41:58,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 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) [2021-10-28 23:41:58,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 67 transitions. [2021-10-28 23:41:58,595 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 67 transitions. Stem has 59 letters. Loop has 56 letters. [2021-10-28 23:41:58,595 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:41:58,596 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 67 transitions. Stem has 115 letters. Loop has 56 letters. [2021-10-28 23:41:58,596 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:41:58,596 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 67 transitions. Stem has 59 letters. Loop has 112 letters. [2021-10-28 23:41:58,597 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:41:58,598 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1161 states and 1347 transitions. [2021-10-28 23:41:58,608 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 65 [2021-10-28 23:41:58,615 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1161 states to 812 states and 943 transitions. [2021-10-28 23:41:58,615 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 167 [2021-10-28 23:41:58,615 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 175 [2021-10-28 23:41:58,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 812 states and 943 transitions. [2021-10-28 23:41:58,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:41:58,616 INFO L681 BuchiCegarLoop]: Abstraction has 812 states and 943 transitions. [2021-10-28 23:41:58,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states and 943 transitions. [2021-10-28 23:41:58,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 525. [2021-10-28 23:41:58,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 525 states have (on average 1.1923809523809523) internal successors, (626), 524 states have internal predecessors, (626), 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) [2021-10-28 23:41:58,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 626 transitions. [2021-10-28 23:41:58,631 INFO L704 BuchiCegarLoop]: Abstraction has 525 states and 626 transitions. [2021-10-28 23:41:58,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:41:58,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:41:58,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:41:58,632 INFO L87 Difference]: Start difference. First operand 525 states and 626 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 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) [2021-10-28 23:41:58,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:41:58,704 INFO L93 Difference]: Finished difference Result 357 states and 408 transitions. [2021-10-28 23:41:58,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:41:58,705 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 357 states and 408 transitions. [2021-10-28 23:41:58,708 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 87 [2021-10-28 23:41:58,711 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 357 states to 313 states and 364 transitions. [2021-10-28 23:41:58,711 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 76 [2021-10-28 23:41:58,711 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 76 [2021-10-28 23:41:58,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 313 states and 364 transitions. [2021-10-28 23:41:58,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:41:58,712 INFO L681 BuchiCegarLoop]: Abstraction has 313 states and 364 transitions. [2021-10-28 23:41:58,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states and 364 transitions. [2021-10-28 23:41:58,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 211. [2021-10-28 23:41:58,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 211 states have (on average 1.1706161137440758) internal successors, (247), 210 states have internal predecessors, (247), 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) [2021-10-28 23:41:58,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 247 transitions. [2021-10-28 23:41:58,721 INFO L704 BuchiCegarLoop]: Abstraction has 211 states and 247 transitions. [2021-10-28 23:41:58,721 INFO L587 BuchiCegarLoop]: Abstraction has 211 states and 247 transitions. [2021-10-28 23:41:58,721 INFO L425 BuchiCegarLoop]: ======== Iteration 20============ [2021-10-28 23:41:58,722 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 211 states and 247 transitions. [2021-10-28 23:41:58,723 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 65 [2021-10-28 23:41:58,723 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:41:58,724 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:41:58,725 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [16, 14, 14, 9, 6, 2, 1, 1] [2021-10-28 23:41:58,725 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [15, 14, 14, 9, 6, 1, 1] [2021-10-28 23:41:58,725 INFO L791 eck$LassoCheckResult]: Stem: 13276#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 13277#L18-1 assume !!(main_~i~0 > 0); 13402#L12 assume 1 == main_~i~0;main_~up~0 := 1; 13403#L12-2 assume !(10 == main_~i~0); 13289#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13290#L18-1 assume !!(main_~i~0 > 0); 13473#L12 assume !(1 == main_~i~0); 13471#L12-2 assume !(10 == main_~i~0); 13469#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13467#L18-1 assume !!(main_~i~0 > 0); 13465#L12 assume !(1 == main_~i~0); 13463#L12-2 assume !(10 == main_~i~0); 13461#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13459#L18-1 assume !!(main_~i~0 > 0); 13457#L12 assume !(1 == main_~i~0); 13455#L12-2 assume !(10 == main_~i~0); 13453#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13451#L18-1 assume !!(main_~i~0 > 0); 13449#L12 assume !(1 == main_~i~0); 13447#L12-2 assume !(10 == main_~i~0); 13446#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13418#L18-1 assume !!(main_~i~0 > 0); 13372#L12 assume !(1 == main_~i~0); 13381#L12-2 assume !(10 == main_~i~0); 13375#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13371#L18-1 assume !!(main_~i~0 > 0); 13368#L12 assume !(1 == main_~i~0); 13369#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 13282#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13283#L18-1 assume !!(main_~i~0 > 0); 13367#L12 assume !(1 == main_~i~0); 13365#L12-2 assume !(10 == main_~i~0); 13363#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13361#L18-1 assume !!(main_~i~0 > 0); 13359#L12 assume !(1 == main_~i~0); 13357#L12-2 assume !(10 == main_~i~0); 13355#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13353#L18-1 assume !!(main_~i~0 > 0); 13351#L12 assume !(1 == main_~i~0); 13349#L12-2 assume !(10 == main_~i~0); 13347#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13345#L18-1 assume !!(main_~i~0 > 0); 13343#L12 assume !(1 == main_~i~0); 13341#L12-2 assume !(10 == main_~i~0); 13339#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13337#L18-1 assume !!(main_~i~0 > 0); 13335#L12 assume !(1 == main_~i~0); 13333#L12-2 assume !(10 == main_~i~0); 13331#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13329#L18-1 assume !!(main_~i~0 > 0); 13327#L12 assume !(1 == main_~i~0); 13325#L12-2 assume !(10 == main_~i~0); 13323#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13321#L18-1 assume !!(main_~i~0 > 0); 13319#L12 assume !(1 == main_~i~0); 13317#L12-2 assume !(10 == main_~i~0); 13315#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13313#L18-1 assume !!(main_~i~0 > 0); 13311#L12 assume !(1 == main_~i~0); 13304#L12-2 assume !(10 == main_~i~0); 13308#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13306#L18-1 assume !!(main_~i~0 > 0); 13303#L12 assume 1 == main_~i~0;main_~up~0 := 1; 13300#L12-2 [2021-10-28 23:41:58,725 INFO L793 eck$LassoCheckResult]: Loop: 13300#L12-2 assume !(10 == main_~i~0); 13295#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13401#L18-1 assume !!(main_~i~0 > 0); 13400#L12 assume !(1 == main_~i~0); 13399#L12-2 assume !(10 == main_~i~0); 13398#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13397#L18-1 assume !!(main_~i~0 > 0); 13396#L12 assume !(1 == main_~i~0); 13395#L12-2 assume !(10 == main_~i~0); 13394#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13393#L18-1 assume !!(main_~i~0 > 0); 13392#L12 assume !(1 == main_~i~0); 13391#L12-2 assume !(10 == main_~i~0); 13390#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13389#L18-1 assume !!(main_~i~0 > 0); 13388#L12 assume !(1 == main_~i~0); 13387#L12-2 assume !(10 == main_~i~0); 13386#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13385#L18-1 assume !!(main_~i~0 > 0); 13384#L12 assume !(1 == main_~i~0); 13383#L12-2 assume !(10 == main_~i~0); 13374#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13379#L18-1 assume !!(main_~i~0 > 0); 13376#L12 assume !(1 == main_~i~0); 13373#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 13273#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13291#L18-1 assume !!(main_~i~0 > 0); 13366#L12 assume !(1 == main_~i~0); 13364#L12-2 assume !(10 == main_~i~0); 13362#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13360#L18-1 assume !!(main_~i~0 > 0); 13358#L12 assume !(1 == main_~i~0); 13356#L12-2 assume !(10 == main_~i~0); 13354#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13352#L18-1 assume !!(main_~i~0 > 0); 13350#L12 assume !(1 == main_~i~0); 13348#L12-2 assume !(10 == main_~i~0); 13346#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13344#L18-1 assume !!(main_~i~0 > 0); 13342#L12 assume !(1 == main_~i~0); 13340#L12-2 assume !(10 == main_~i~0); 13338#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13336#L18-1 assume !!(main_~i~0 > 0); 13334#L12 assume !(1 == main_~i~0); 13332#L12-2 assume !(10 == main_~i~0); 13330#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13328#L18-1 assume !!(main_~i~0 > 0); 13326#L12 assume !(1 == main_~i~0); 13324#L12-2 assume !(10 == main_~i~0); 13322#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13320#L18-1 assume !!(main_~i~0 > 0); 13318#L12 assume !(1 == main_~i~0); 13316#L12-2 assume !(10 == main_~i~0); 13314#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13312#L18-1 assume !!(main_~i~0 > 0); 13310#L12 assume !(1 == main_~i~0); 13302#L12-2 assume !(10 == main_~i~0); 13307#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13305#L18-1 assume !!(main_~i~0 > 0); 13301#L12 assume 1 == main_~i~0;main_~up~0 := 1; 13300#L12-2 [2021-10-28 23:41:58,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:41:58,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1417622308, now seen corresponding path program 13 times [2021-10-28 23:41:58,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:41:58,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375484285] [2021-10-28 23:41:58,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:41:58,727 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:41:58,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:41:58,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (101)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:58,831 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 248 proven. 66 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-28 23:41:58,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:41:58,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375484285] [2021-10-28 23:41:58,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375484285] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:41:58,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083226821] [2021-10-28 23:41:58,834 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-28 23:41:58,834 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:41:58,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:58,840 INFO L229 MonitoredProcess]: Starting monitored process 102 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:41:58,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2021-10-28 23:41:59,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:41:59,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 23:41:59,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:41:59,453 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 248 proven. 66 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-28 23:41:59,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083226821] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:41:59,454 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:41:59,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-10-28 23:41:59,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612361380] [2021-10-28 23:41:59,455 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 23:41:59,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:41:59,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1315151238, now seen corresponding path program 11 times [2021-10-28 23:41:59,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:41:59,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277837053] [2021-10-28 23:41:59,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:41:59,456 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:41:59,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:41:59,469 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:41:59,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:41:59,484 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:41:59,792 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:41:59,792 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:41:59,793 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:41:59,793 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:41:59,793 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:41:59,793 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:59,793 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:41:59,793 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:41:59,793 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration20_Loop [2021-10-28 23:41:59,793 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:41:59,794 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:41:59,794 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:59,801 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:59,806 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:59,809 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:41:59,893 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:41:59,893 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:41:59,893 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:59,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:59,894 INFO L229 MonitoredProcess]: Starting monitored process 103 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:59,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (103)] Waiting until timeout for monitored process [2021-10-28 23:41:59,898 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:41:59,898 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:41:59,914 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:41:59,914 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_20=0} Honda state: {v_rep~unnamed0~0~false_20=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:41:59,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (103)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:59,940 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:59,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:59,941 INFO L229 MonitoredProcess]: Starting monitored process 104 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:59,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (104)] Waiting until timeout for monitored process [2021-10-28 23:41:59,942 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:41:59,942 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:41:59,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (104)] Forceful destruction successful, exit code 0 [2021-10-28 23:41:59,979 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:41:59,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:41:59,980 INFO L229 MonitoredProcess]: Starting monitored process 105 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:41:59,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (105)] Waiting until timeout for monitored process [2021-10-28 23:41:59,981 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:41:59,981 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:41:59,995 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 23:42:00,021 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (105)] Ended with exit code 0 [2021-10-28 23:42:00,022 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:42:00,022 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:42:00,022 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:42:00,022 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:42:00,022 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:42:00,022 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:42:00,022 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:42:00,022 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:42:00,022 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration20_Loop [2021-10-28 23:42:00,022 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:42:00,022 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:42:00,023 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:42:00,026 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:42:00,034 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:42:00,036 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:42:00,081 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:42:00,081 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:42:00,082 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:42:00,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:42:00,083 INFO L229 MonitoredProcess]: Starting monitored process 106 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:42:00,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (106)] Waiting until timeout for monitored process [2021-10-28 23:42:00,084 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 [2021-10-28 23:42:00,093 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:42:00,093 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:42:00,093 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:42:00,094 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:42:00,095 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:42:00,096 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:42:00,098 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:42:00,124 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (106)] Ended with exit code 0 [2021-10-28 23:42:00,124 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:42:00,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:42:00,126 INFO L229 MonitoredProcess]: Starting monitored process 107 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:42:00,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (107)] Waiting until timeout for monitored process [2021-10-28 23:42:00,127 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:42:00,136 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:42:00,136 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:42:00,136 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:42:00,136 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:42:00,136 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:42:00,138 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:42:00,138 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:42:00,140 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:42:00,143 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 23:42:00,144 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 23:42:00,144 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:42:00,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:42:00,146 INFO L229 MonitoredProcess]: Starting monitored process 108 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:42:00,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (108)] Waiting until timeout for monitored process [2021-10-28 23:42:00,147 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:42:00,147 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 23:42:00,147 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:42:00,147 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-28 23:42:00,173 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (107)] Ended with exit code 0 [2021-10-28 23:42:00,174 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 23:42:00,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:42:00,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:42:00,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:42:00,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:42:00,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:42:00,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 23:42:00,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:42:00,729 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 284 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-28 23:42:00,729 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 8 loop predicates [2021-10-28 23:42:00,729 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 211 states and 247 transitions. cyclomatic complexity: 45 Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 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) [2021-10-28 23:42:01,105 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 211 states and 247 transitions. cyclomatic complexity: 45. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 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 1457 states and 1676 transitions. Complement of second has 31 states. [2021-10-28 23:42:01,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 16 states 1 stem states 14 non-accepting loop states 1 accepting loop states [2021-10-28 23:42:01,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 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) [2021-10-28 23:42:01,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 77 transitions. [2021-10-28 23:42:01,108 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 77 transitions. Stem has 63 letters. Loop has 60 letters. [2021-10-28 23:42:01,108 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:42:01,108 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 77 transitions. Stem has 123 letters. Loop has 60 letters. [2021-10-28 23:42:01,109 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:42:01,109 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 77 transitions. Stem has 63 letters. Loop has 120 letters. [2021-10-28 23:42:01,110 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:42:01,111 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1457 states and 1676 transitions. [2021-10-28 23:42:01,153 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 69 [2021-10-28 23:42:01,171 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1457 states to 980 states and 1131 transitions. [2021-10-28 23:42:01,185 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 196 [2021-10-28 23:42:01,186 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 205 [2021-10-28 23:42:01,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 980 states and 1131 transitions. [2021-10-28 23:42:01,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:42:01,187 INFO L681 BuchiCegarLoop]: Abstraction has 980 states and 1131 transitions. [2021-10-28 23:42:01,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states and 1131 transitions. [2021-10-28 23:42:01,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 597. [2021-10-28 23:42:01,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 597 states have (on average 1.1926298157453936) internal successors, (712), 596 states have internal predecessors, (712), 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) [2021-10-28 23:42:01,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 712 transitions. [2021-10-28 23:42:01,212 INFO L704 BuchiCegarLoop]: Abstraction has 597 states and 712 transitions. [2021-10-28 23:42:01,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:42:01,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 23:42:01,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:42:01,214 INFO L87 Difference]: Start difference. First operand 597 states and 712 transitions. Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 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) [2021-10-28 23:42:01,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (108)] Forceful destruction successful, exit code 0 [2021-10-28 23:42:01,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:42:01,267 INFO L93 Difference]: Finished difference Result 397 states and 451 transitions. [2021-10-28 23:42:01,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:42:01,269 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 397 states and 451 transitions. [2021-10-28 23:42:01,273 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 95 [2021-10-28 23:42:01,276 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 397 states to 345 states and 399 transitions. [2021-10-28 23:42:01,276 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 80 [2021-10-28 23:42:01,276 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 80 [2021-10-28 23:42:01,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 345 states and 399 transitions. [2021-10-28 23:42:01,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:42:01,278 INFO L681 BuchiCegarLoop]: Abstraction has 345 states and 399 transitions. [2021-10-28 23:42:01,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states and 399 transitions. [2021-10-28 23:42:01,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 223. [2021-10-28 23:42:01,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 223 states have (on average 1.1614349775784754) internal successors, (259), 222 states have internal predecessors, (259), 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) [2021-10-28 23:42:01,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 259 transitions. [2021-10-28 23:42:01,285 INFO L704 BuchiCegarLoop]: Abstraction has 223 states and 259 transitions. [2021-10-28 23:42:01,285 INFO L587 BuchiCegarLoop]: Abstraction has 223 states and 259 transitions. [2021-10-28 23:42:01,285 INFO L425 BuchiCegarLoop]: ======== Iteration 21============ [2021-10-28 23:42:01,285 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 223 states and 259 transitions. [2021-10-28 23:42:01,287 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 69 [2021-10-28 23:42:01,287 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:42:01,287 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:42:01,289 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [17, 15, 15, 9, 7, 2, 1, 1] [2021-10-28 23:42:01,289 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [16, 15, 15, 9, 7, 1, 1] [2021-10-28 23:42:01,289 INFO L791 eck$LassoCheckResult]: Stem: 16575#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 16576#L18-1 assume !!(main_~i~0 > 0); 16700#L12 assume 1 == main_~i~0;main_~up~0 := 1; 16589#L12-2 assume !(10 == main_~i~0); 16590#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16777#L18-1 assume !!(main_~i~0 > 0); 16775#L12 assume !(1 == main_~i~0); 16773#L12-2 assume !(10 == main_~i~0); 16771#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16769#L18-1 assume !!(main_~i~0 > 0); 16767#L12 assume !(1 == main_~i~0); 16765#L12-2 assume !(10 == main_~i~0); 16763#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16761#L18-1 assume !!(main_~i~0 > 0); 16759#L12 assume !(1 == main_~i~0); 16757#L12-2 assume !(10 == main_~i~0); 16755#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16753#L18-1 assume !!(main_~i~0 > 0); 16751#L12 assume !(1 == main_~i~0); 16749#L12-2 assume !(10 == main_~i~0); 16747#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16745#L18-1 assume !!(main_~i~0 > 0); 16743#L12 assume !(1 == main_~i~0); 16742#L12-2 assume !(10 == main_~i~0); 16713#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16711#L18-1 assume !!(main_~i~0 > 0); 16606#L12 assume !(1 == main_~i~0); 16707#L12-2 assume !(10 == main_~i~0); 16607#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16605#L18-1 assume !!(main_~i~0 > 0); 16604#L12 assume !(1 == main_~i~0); 16567#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 16568#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16577#L18-1 assume !!(main_~i~0 > 0); 16697#L12 assume !(1 == main_~i~0); 16696#L12-2 assume !(10 == main_~i~0); 16695#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16693#L18-1 assume !!(main_~i~0 > 0); 16690#L12 assume !(1 == main_~i~0); 16688#L12-2 assume !(10 == main_~i~0); 16686#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16684#L18-1 assume !!(main_~i~0 > 0); 16682#L12 assume !(1 == main_~i~0); 16680#L12-2 assume !(10 == main_~i~0); 16678#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16676#L18-1 assume !!(main_~i~0 > 0); 16674#L12 assume !(1 == main_~i~0); 16672#L12-2 assume !(10 == main_~i~0); 16670#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16668#L18-1 assume !!(main_~i~0 > 0); 16666#L12 assume !(1 == main_~i~0); 16664#L12-2 assume !(10 == main_~i~0); 16662#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16660#L18-1 assume !!(main_~i~0 > 0); 16658#L12 assume !(1 == main_~i~0); 16656#L12-2 assume !(10 == main_~i~0); 16654#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16652#L18-1 assume !!(main_~i~0 > 0); 16650#L12 assume !(1 == main_~i~0); 16648#L12-2 assume !(10 == main_~i~0); 16646#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16644#L18-1 assume !!(main_~i~0 > 0); 16642#L12 assume !(1 == main_~i~0); 16634#L12-2 assume !(10 == main_~i~0); 16639#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16637#L18-1 assume !!(main_~i~0 > 0); 16633#L12 assume 1 == main_~i~0;main_~up~0 := 1; 16632#L12-2 [2021-10-28 23:42:01,289 INFO L793 eck$LassoCheckResult]: Loop: 16632#L12-2 assume !(10 == main_~i~0); 16593#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16631#L18-1 assume !!(main_~i~0 > 0); 16630#L12 assume !(1 == main_~i~0); 16629#L12-2 assume !(10 == main_~i~0); 16628#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16627#L18-1 assume !!(main_~i~0 > 0); 16626#L12 assume !(1 == main_~i~0); 16625#L12-2 assume !(10 == main_~i~0); 16624#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16623#L18-1 assume !!(main_~i~0 > 0); 16622#L12 assume !(1 == main_~i~0); 16621#L12-2 assume !(10 == main_~i~0); 16620#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16619#L18-1 assume !!(main_~i~0 > 0); 16618#L12 assume !(1 == main_~i~0); 16617#L12-2 assume !(10 == main_~i~0); 16616#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16615#L18-1 assume !!(main_~i~0 > 0); 16614#L12 assume !(1 == main_~i~0); 16613#L12-2 assume !(10 == main_~i~0); 16612#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16611#L18-1 assume !!(main_~i~0 > 0); 16610#L12 assume !(1 == main_~i~0); 16609#L12-2 assume !(10 == main_~i~0); 16595#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16600#L18-1 assume !!(main_~i~0 > 0); 16597#L12 assume !(1 == main_~i~0); 16594#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 16587#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16694#L18-1 assume !!(main_~i~0 > 0); 16691#L12 assume !(1 == main_~i~0); 16588#L12-2 assume !(10 == main_~i~0); 16584#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16585#L18-1 assume !!(main_~i~0 > 0); 16692#L12 assume !(1 == main_~i~0); 16689#L12-2 assume !(10 == main_~i~0); 16687#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16685#L18-1 assume !!(main_~i~0 > 0); 16683#L12 assume !(1 == main_~i~0); 16681#L12-2 assume !(10 == main_~i~0); 16679#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16677#L18-1 assume !!(main_~i~0 > 0); 16675#L12 assume !(1 == main_~i~0); 16673#L12-2 assume !(10 == main_~i~0); 16671#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16669#L18-1 assume !!(main_~i~0 > 0); 16667#L12 assume !(1 == main_~i~0); 16665#L12-2 assume !(10 == main_~i~0); 16663#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16661#L18-1 assume !!(main_~i~0 > 0); 16659#L12 assume !(1 == main_~i~0); 16657#L12-2 assume !(10 == main_~i~0); 16655#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16653#L18-1 assume !!(main_~i~0 > 0); 16651#L12 assume !(1 == main_~i~0); 16649#L12-2 assume !(10 == main_~i~0); 16647#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16645#L18-1 assume !!(main_~i~0 > 0); 16643#L12 assume !(1 == main_~i~0); 16636#L12-2 assume !(10 == main_~i~0); 16640#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16638#L18-1 assume !!(main_~i~0 > 0); 16635#L12 assume 1 == main_~i~0;main_~up~0 := 1; 16632#L12-2 [2021-10-28 23:42:01,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:42:01,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1714987717, now seen corresponding path program 14 times [2021-10-28 23:42:01,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:42:01,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429966960] [2021-10-28 23:42:01,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:42:01,292 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:42:01,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:42:01,384 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 285 proven. 91 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-28 23:42:01,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:42:01,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429966960] [2021-10-28 23:42:01,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429966960] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:42:01,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923140392] [2021-10-28 23:42:01,385 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:42:01,385 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:42:01,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:42:01,387 INFO L229 MonitoredProcess]: Starting monitored process 109 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:42:01,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2021-10-28 23:42:01,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 23:42:01,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:42:01,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 23:42:01,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:42:01,996 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 285 proven. 91 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-28 23:42:01,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923140392] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:42:01,997 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:42:01,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-10-28 23:42:01,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76720595] [2021-10-28 23:42:01,998 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 23:42:01,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:42:01,998 INFO L85 PathProgramCache]: Analyzing trace with hash 590625123, now seen corresponding path program 12 times [2021-10-28 23:42:01,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:42:01,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36243912] [2021-10-28 23:42:01,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:42:01,999 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:42:02,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:42:02,052 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:42:02,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:42:02,062 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:42:02,526 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:42:02,526 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:42:02,526 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:42:02,526 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:42:02,527 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:42:02,527 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:42:02,527 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:42:02,527 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:42:02,527 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration21_Loop [2021-10-28 23:42:02,527 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:42:02,527 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:42:02,528 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:42:02,531 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:42:02,534 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:42:02,539 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:42:02,593 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:42:02,593 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:42:02,593 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:42:02,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:42:02,596 INFO L229 MonitoredProcess]: Starting monitored process 110 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:42:02,598 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:42:02,599 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:42:02,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (110)] Waiting until timeout for monitored process [2021-10-28 23:42:02,620 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:42:02,620 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_22=1} Honda state: {v_rep~unnamed0~0~true_22=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:42:02,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (110)] Forceful destruction successful, exit code 0 [2021-10-28 23:42:02,660 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:42:02,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:42:02,664 INFO L229 MonitoredProcess]: Starting monitored process 111 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:42:02,666 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:42:02,667 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:42:02,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (111)] Waiting until timeout for monitored process [2021-10-28 23:42:02,689 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:42:02,689 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_22=0} Honda state: {v_rep~unnamed0~0~false_22=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:42:02,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (111)] Forceful destruction successful, exit code 0 [2021-10-28 23:42:02,730 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:42:02,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:42:02,731 INFO L229 MonitoredProcess]: Starting monitored process 112 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:42:02,736 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:42:02,737 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:42:02,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (112)] Waiting until timeout for monitored process [2021-10-28 23:42:02,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (112)] Forceful destruction successful, exit code 0 [2021-10-28 23:42:02,828 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:42:02,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:42:02,845 INFO L229 MonitoredProcess]: Starting monitored process 113 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:42:02,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (113)] Waiting until timeout for monitored process [2021-10-28 23:42:02,891 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:42:02,892 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:42:02,919 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 23:42:02,958 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (113)] Forceful destruction successful, exit code 0 [2021-10-28 23:42:02,959 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:42:02,959 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:42:02,959 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:42:02,959 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:42:02,959 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:42:02,959 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:42:02,959 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:42:02,960 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:42:02,960 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration21_Loop [2021-10-28 23:42:02,960 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:42:02,960 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:42:02,961 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:42:02,964 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:42:02,970 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:42:02,973 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:42:03,033 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:42:03,034 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:42:03,034 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:42:03,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:42:03,035 INFO L229 MonitoredProcess]: Starting monitored process 114 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:42:03,044 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 [2021-10-28 23:42:03,056 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:42:03,056 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:42:03,056 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:42:03,056 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:42:03,058 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:42:03,058 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:42:03,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (114)] Waiting until timeout for monitored process [2021-10-28 23:42:03,071 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:42:03,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (114)] Forceful destruction successful, exit code 0 [2021-10-28 23:42:03,113 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:42:03,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:42:03,114 INFO L229 MonitoredProcess]: Starting monitored process 115 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:42:03,116 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 [2021-10-28 23:42:03,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (115)] Waiting until timeout for monitored process [2021-10-28 23:42:03,126 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:42:03,126 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:42:03,126 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:42:03,126 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:42:03,126 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:42:03,127 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:42:03,127 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:42:03,129 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:42:03,132 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 23:42:03,132 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 23:42:03,132 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:42:03,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:42:03,134 INFO L229 MonitoredProcess]: Starting monitored process 116 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:42:03,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (116)] Waiting until timeout for monitored process [2021-10-28 23:42:03,136 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:42:03,136 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 23:42:03,136 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:42:03,136 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-28 23:42:03,160 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (115)] Ended with exit code 0 [2021-10-28 23:42:03,161 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 23:42:03,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:42:03,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:42:03,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:42:03,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:42:03,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:42:03,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 23:42:03,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:42:03,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (116)] Forceful destruction successful, exit code 0 [2021-10-28 23:42:03,748 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 344 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-28 23:42:03,748 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 9 loop predicates [2021-10-28 23:42:03,748 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 223 states and 259 transitions. cyclomatic complexity: 45 Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 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) [2021-10-28 23:42:04,170 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 223 states and 259 transitions. cyclomatic complexity: 45. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 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 1793 states and 2049 transitions. Complement of second has 35 states. [2021-10-28 23:42:04,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 18 states 1 stem states 16 non-accepting loop states 1 accepting loop states [2021-10-28 23:42:04,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 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) [2021-10-28 23:42:04,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 87 transitions. [2021-10-28 23:42:04,171 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 18 states and 87 transitions. Stem has 67 letters. Loop has 64 letters. [2021-10-28 23:42:04,172 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:42:04,172 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 18 states and 87 transitions. Stem has 131 letters. Loop has 64 letters. [2021-10-28 23:42:04,173 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:42:04,173 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 18 states and 87 transitions. Stem has 67 letters. Loop has 128 letters. [2021-10-28 23:42:04,174 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:42:04,174 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1793 states and 2049 transitions. [2021-10-28 23:42:04,187 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 73 [2021-10-28 23:42:04,196 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1793 states to 1168 states and 1341 transitions. [2021-10-28 23:42:04,196 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 229 [2021-10-28 23:42:04,198 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 239 [2021-10-28 23:42:04,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1168 states and 1341 transitions. [2021-10-28 23:42:04,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:42:04,204 INFO L681 BuchiCegarLoop]: Abstraction has 1168 states and 1341 transitions. [2021-10-28 23:42:04,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states and 1341 transitions. [2021-10-28 23:42:04,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 677. [2021-10-28 23:42:04,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 677 states have (on average 1.1935007385524372) internal successors, (808), 676 states have internal predecessors, (808), 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) [2021-10-28 23:42:04,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 808 transitions. [2021-10-28 23:42:04,222 INFO L704 BuchiCegarLoop]: Abstraction has 677 states and 808 transitions. [2021-10-28 23:42:04,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:42:04,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:42:04,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:42:04,223 INFO L87 Difference]: Start difference. First operand 677 states and 808 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 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) [2021-10-28 23:42:04,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:42:04,273 INFO L93 Difference]: Finished difference Result 437 states and 494 transitions. [2021-10-28 23:42:04,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 23:42:04,274 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 437 states and 494 transitions. [2021-10-28 23:42:04,277 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 103 [2021-10-28 23:42:04,280 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 437 states to 377 states and 434 transitions. [2021-10-28 23:42:04,280 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 84 [2021-10-28 23:42:04,280 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 84 [2021-10-28 23:42:04,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 377 states and 434 transitions. [2021-10-28 23:42:04,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:42:04,283 INFO L681 BuchiCegarLoop]: Abstraction has 377 states and 434 transitions. [2021-10-28 23:42:04,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states and 434 transitions. [2021-10-28 23:42:04,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 235. [2021-10-28 23:42:04,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 235 states have (on average 1.1531914893617021) internal successors, (271), 234 states have internal predecessors, (271), 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) [2021-10-28 23:42:04,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 271 transitions. [2021-10-28 23:42:04,289 INFO L704 BuchiCegarLoop]: Abstraction has 235 states and 271 transitions. [2021-10-28 23:42:04,289 INFO L587 BuchiCegarLoop]: Abstraction has 235 states and 271 transitions. [2021-10-28 23:42:04,289 INFO L425 BuchiCegarLoop]: ======== Iteration 22============ [2021-10-28 23:42:04,289 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 235 states and 271 transitions. [2021-10-28 23:42:04,291 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 73 [2021-10-28 23:42:04,291 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:42:04,291 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:42:04,292 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [18, 16, 16, 9, 8, 2, 1, 1] [2021-10-28 23:42:04,292 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [17, 16, 16, 9, 8, 1, 1] [2021-10-28 23:42:04,293 INFO L791 eck$LassoCheckResult]: Stem: 20384#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 20385#L18-1 assume !!(main_~i~0 > 0); 20511#L12 assume 1 == main_~i~0;main_~up~0 := 1; 20567#L12-2 assume !(10 == main_~i~0); 20566#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 20380#L18-1 assume !!(main_~i~0 > 0); 20381#L12 assume !(1 == main_~i~0); 20564#L12-2 assume !(10 == main_~i~0); 20562#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 20560#L18-1 assume !!(main_~i~0 > 0); 20558#L12 assume !(1 == main_~i~0); 20556#L12-2 assume !(10 == main_~i~0); 20554#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 20552#L18-1 assume !!(main_~i~0 > 0); 20550#L12 assume !(1 == main_~i~0); 20548#L12-2 assume !(10 == main_~i~0); 20546#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 20544#L18-1 assume !!(main_~i~0 > 0); 20542#L12 assume !(1 == main_~i~0); 20540#L12-2 assume !(10 == main_~i~0); 20538#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 20536#L18-1 assume !!(main_~i~0 > 0); 20534#L12 assume !(1 == main_~i~0); 20532#L12-2 assume !(10 == main_~i~0); 20530#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 20528#L18-1 assume !!(main_~i~0 > 0); 20526#L12 assume !(1 == main_~i~0); 20524#L12-2 assume !(10 == main_~i~0); 20522#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 20520#L18-1 assume !!(main_~i~0 > 0); 20412#L12 assume !(1 == main_~i~0); 20517#L12-2 assume !(10 == main_~i~0); 20413#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 20411#L18-1 assume !!(main_~i~0 > 0); 20410#L12 assume !(1 == main_~i~0); 20409#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 20386#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 20387#L18-1 assume !!(main_~i~0 > 0); 20509#L12 assume !(1 == main_~i~0); 20508#L12-2 assume !(10 == main_~i~0); 20507#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 20506#L18-1 assume !!(main_~i~0 > 0); 20504#L12 assume !(1 == main_~i~0); 20501#L12-2 assume !(10 == main_~i~0); 20499#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 20497#L18-1 assume !!(main_~i~0 > 0); 20495#L12 assume !(1 == main_~i~0); 20493#L12-2 assume !(10 == main_~i~0); 20491#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 20489#L18-1 assume !!(main_~i~0 > 0); 20487#L12 assume !(1 == main_~i~0); 20485#L12-2 assume !(10 == main_~i~0); 20483#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 20481#L18-1 assume !!(main_~i~0 > 0); 20479#L12 assume !(1 == main_~i~0); 20477#L12-2 assume !(10 == main_~i~0); 20475#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 20473#L18-1 assume !!(main_~i~0 > 0); 20471#L12 assume !(1 == main_~i~0); 20469#L12-2 assume !(10 == main_~i~0); 20467#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 20465#L18-1 assume !!(main_~i~0 > 0); 20463#L12 assume !(1 == main_~i~0); 20461#L12-2 assume !(10 == main_~i~0); 20459#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 20457#L18-1 assume !!(main_~i~0 > 0); 20455#L12 assume !(1 == main_~i~0); 20448#L12-2 assume !(10 == main_~i~0); 20452#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 20450#L18-1 assume !!(main_~i~0 > 0); 20447#L12 assume 1 == main_~i~0;main_~up~0 := 1; 20442#L12-2 [2021-10-28 23:42:04,293 INFO L793 eck$LassoCheckResult]: Loop: 20442#L12-2 assume !(10 == main_~i~0); 20439#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 20438#L18-1 assume !!(main_~i~0 > 0); 20437#L12 assume !(1 == main_~i~0); 20436#L12-2 assume !(10 == main_~i~0); 20435#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 20434#L18-1 assume !!(main_~i~0 > 0); 20433#L12 assume !(1 == main_~i~0); 20432#L12-2 assume !(10 == main_~i~0); 20431#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 20430#L18-1 assume !!(main_~i~0 > 0); 20429#L12 assume !(1 == main_~i~0); 20428#L12-2 assume !(10 == main_~i~0); 20427#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 20426#L18-1 assume !!(main_~i~0 > 0); 20425#L12 assume !(1 == main_~i~0); 20424#L12-2 assume !(10 == main_~i~0); 20423#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 20422#L18-1 assume !!(main_~i~0 > 0); 20421#L12 assume !(1 == main_~i~0); 20420#L12-2 assume !(10 == main_~i~0); 20419#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 20418#L18-1 assume !!(main_~i~0 > 0); 20417#L12 assume !(1 == main_~i~0); 20416#L12-2 assume !(10 == main_~i~0); 20415#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 20414#L18-1 assume !!(main_~i~0 > 0); 20408#L12 assume !(1 == main_~i~0); 20407#L12-2 assume !(10 == main_~i~0); 20405#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 20403#L18-1 assume !!(main_~i~0 > 0); 20398#L12 assume !(1 == main_~i~0); 20399#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 20396#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 20505#L18-1 assume !!(main_~i~0 > 0); 20502#L12 assume !(1 == main_~i~0); 20397#L12-2 assume !(10 == main_~i~0); 20393#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 20394#L18-1 assume !!(main_~i~0 > 0); 20503#L12 assume !(1 == main_~i~0); 20500#L12-2 assume !(10 == main_~i~0); 20498#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 20496#L18-1 assume !!(main_~i~0 > 0); 20494#L12 assume !(1 == main_~i~0); 20492#L12-2 assume !(10 == main_~i~0); 20490#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 20488#L18-1 assume !!(main_~i~0 > 0); 20486#L12 assume !(1 == main_~i~0); 20484#L12-2 assume !(10 == main_~i~0); 20482#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 20480#L18-1 assume !!(main_~i~0 > 0); 20478#L12 assume !(1 == main_~i~0); 20476#L12-2 assume !(10 == main_~i~0); 20474#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 20472#L18-1 assume !!(main_~i~0 > 0); 20470#L12 assume !(1 == main_~i~0); 20468#L12-2 assume !(10 == main_~i~0); 20466#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 20464#L18-1 assume !!(main_~i~0 > 0); 20462#L12 assume !(1 == main_~i~0); 20460#L12-2 assume !(10 == main_~i~0); 20458#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 20456#L18-1 assume !!(main_~i~0 > 0); 20454#L12 assume !(1 == main_~i~0); 20446#L12-2 assume !(10 == main_~i~0); 20451#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 20449#L18-1 assume !!(main_~i~0 > 0); 20445#L12 assume 1 == main_~i~0;main_~up~0 := 1; 20442#L12-2 [2021-10-28 23:42:04,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:42:04,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1278125010, now seen corresponding path program 15 times [2021-10-28 23:42:04,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:42:04,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784415535] [2021-10-28 23:42:04,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:42:04,294 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:42:04,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:42:04,396 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 322 proven. 120 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-28 23:42:04,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:42:04,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784415535] [2021-10-28 23:42:04,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784415535] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:42:04,397 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944534813] [2021-10-28 23:42:04,397 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 23:42:04,397 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:42:04,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:42:04,398 INFO L229 MonitoredProcess]: Starting monitored process 117 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:42:04,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2021-10-28 23:42:04,927 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2021-10-28 23:42:04,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:42:04,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-28 23:42:04,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:42:05,246 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 322 proven. 226 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-28 23:42:05,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944534813] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:42:05,247 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:42:05,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 12 [2021-10-28 23:42:05,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798475076] [2021-10-28 23:42:05,256 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 23:42:05,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:42:05,256 INFO L85 PathProgramCache]: Analyzing trace with hash -976981044, now seen corresponding path program 13 times [2021-10-28 23:42:05,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:42:05,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124074713] [2021-10-28 23:42:05,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:42:05,257 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:42:05,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:42:05,275 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:42:05,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:42:05,284 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:42:05,610 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:42:05,610 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:42:05,610 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:42:05,610 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:42:05,610 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:42:05,610 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:42:05,610 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:42:05,610 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:42:05,610 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration22_Loop [2021-10-28 23:42:05,610 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:42:05,610 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:42:05,611 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:42:05,616 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:42:05,619 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:42:05,622 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:42:05,668 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:42:05,669 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:42:05,669 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:42:05,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:42:05,672 INFO L229 MonitoredProcess]: Starting monitored process 118 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:42:05,676 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:42:05,676 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:42:05,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (118)] Waiting until timeout for monitored process [2021-10-28 23:42:05,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (118)] Forceful destruction successful, exit code 0 [2021-10-28 23:42:05,708 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:42:05,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:42:05,709 INFO L229 MonitoredProcess]: Starting monitored process 119 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:42:05,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (119)] Waiting until timeout for monitored process [2021-10-28 23:42:05,710 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:42:05,710 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:42:05,720 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 23:42:05,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (119)] Forceful destruction successful, exit code 0 [2021-10-28 23:42:05,742 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:42:05,742 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:42:05,742 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:42:05,742 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:42:05,742 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:42:05,742 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:42:05,742 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:42:05,742 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:42:05,742 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration22_Loop [2021-10-28 23:42:05,742 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:42:05,742 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:42:05,743 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:42:05,756 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:42:05,759 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:42:05,762 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:42:05,812 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:42:05,812 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:42:05,812 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:42:05,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:42:05,813 INFO L229 MonitoredProcess]: Starting monitored process 120 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:42:05,816 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 [2021-10-28 23:42:05,825 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:42:05,825 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:42:05,825 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:42:05,825 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:42:05,825 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:42:05,826 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:42:05,826 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:42:05,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (120)] Waiting until timeout for monitored process [2021-10-28 23:42:05,839 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:42:05,841 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-28 23:42:05,841 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 23:42:05,842 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:42:05,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:42:05,843 INFO L229 MonitoredProcess]: Starting monitored process 121 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:42:05,845 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:42:05,845 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 23:42:05,845 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:42:05,845 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-28 23:42:05,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (121)] Waiting until timeout for monitored process [2021-10-28 23:42:05,868 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (120)] Ended with exit code 0 [2021-10-28 23:42:05,868 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 23:42:05,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:42:05,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:42:05,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:42:05,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:42:06,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (121)] Forceful destruction successful, exit code 0 [2021-10-28 23:42:06,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:42:06,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 23:42:06,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:42:06,502 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 408 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-28 23:42:06,503 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 10 loop predicates [2021-10-28 23:42:06,503 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 235 states and 271 transitions. cyclomatic complexity: 45 Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 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) [2021-10-28 23:42:07,029 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 235 states and 271 transitions. cyclomatic complexity: 45. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 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 2169 states and 2468 transitions. Complement of second has 39 states. [2021-10-28 23:42:07,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 20 states 1 stem states 18 non-accepting loop states 1 accepting loop states [2021-10-28 23:42:07,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 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) [2021-10-28 23:42:07,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 97 transitions. [2021-10-28 23:42:07,042 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 97 transitions. Stem has 71 letters. Loop has 68 letters. [2021-10-28 23:42:07,043 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:42:07,043 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 97 transitions. Stem has 139 letters. Loop has 68 letters. [2021-10-28 23:42:07,044 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:42:07,044 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 97 transitions. Stem has 71 letters. Loop has 136 letters. [2021-10-28 23:42:07,045 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:42:07,045 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2169 states and 2468 transitions. [2021-10-28 23:42:07,063 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 77 [2021-10-28 23:42:07,073 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2169 states to 1376 states and 1575 transitions. [2021-10-28 23:42:07,073 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 266 [2021-10-28 23:42:07,073 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 277 [2021-10-28 23:42:07,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1376 states and 1575 transitions. [2021-10-28 23:42:07,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:42:07,074 INFO L681 BuchiCegarLoop]: Abstraction has 1376 states and 1575 transitions. [2021-10-28 23:42:07,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states and 1575 transitions. [2021-10-28 23:42:07,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 765. [2021-10-28 23:42:07,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 765 states have (on average 1.1947712418300653) internal successors, (914), 764 states have internal predecessors, (914), 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) [2021-10-28 23:42:07,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 914 transitions. [2021-10-28 23:42:07,092 INFO L704 BuchiCegarLoop]: Abstraction has 765 states and 914 transitions. [2021-10-28 23:42:07,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:42:07,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 23:42:07,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-28 23:42:07,093 INFO L87 Difference]: Start difference. First operand 765 states and 914 transitions. Second operand has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 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) [2021-10-28 23:42:07,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:42:07,153 INFO L93 Difference]: Finished difference Result 477 states and 537 transitions. [2021-10-28 23:42:07,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 23:42:07,154 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 477 states and 537 transitions. [2021-10-28 23:42:07,157 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 111 [2021-10-28 23:42:07,160 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 477 states to 409 states and 469 transitions. [2021-10-28 23:42:07,160 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 88 [2021-10-28 23:42:07,160 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 88 [2021-10-28 23:42:07,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 409 states and 469 transitions. [2021-10-28 23:42:07,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:42:07,161 INFO L681 BuchiCegarLoop]: Abstraction has 409 states and 469 transitions. [2021-10-28 23:42:07,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states and 469 transitions. [2021-10-28 23:42:07,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 247. [2021-10-28 23:42:07,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 247 states have (on average 1.145748987854251) internal successors, (283), 246 states have internal predecessors, (283), 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) [2021-10-28 23:42:07,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 283 transitions. [2021-10-28 23:42:07,167 INFO L704 BuchiCegarLoop]: Abstraction has 247 states and 283 transitions. [2021-10-28 23:42:07,167 INFO L587 BuchiCegarLoop]: Abstraction has 247 states and 283 transitions. [2021-10-28 23:42:07,167 INFO L425 BuchiCegarLoop]: ======== Iteration 23============ [2021-10-28 23:42:07,167 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 247 states and 283 transitions. [2021-10-28 23:42:07,168 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 77 [2021-10-28 23:42:07,168 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:42:07,169 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:42:07,170 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [19, 17, 17, 9, 9, 2, 1, 1] [2021-10-28 23:42:07,170 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [18, 17, 17, 9, 9, 1, 1] [2021-10-28 23:42:07,170 INFO L791 eck$LassoCheckResult]: Stem: 24754#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 24755#L18-1 assume !!(main_~i~0 > 0); 24886#L12 assume 1 == main_~i~0;main_~up~0 := 1; 24950#L12-2 assume !(10 == main_~i~0); 24949#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 24750#L18-1 assume !!(main_~i~0 > 0); 24751#L12 assume !(1 == main_~i~0); 24946#L12-2 assume !(10 == main_~i~0); 24944#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 24942#L18-1 assume !!(main_~i~0 > 0); 24940#L12 assume !(1 == main_~i~0); 24938#L12-2 assume !(10 == main_~i~0); 24936#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 24934#L18-1 assume !!(main_~i~0 > 0); 24932#L12 assume !(1 == main_~i~0); 24930#L12-2 assume !(10 == main_~i~0); 24928#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 24926#L18-1 assume !!(main_~i~0 > 0); 24924#L12 assume !(1 == main_~i~0); 24922#L12-2 assume !(10 == main_~i~0); 24920#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 24918#L18-1 assume !!(main_~i~0 > 0); 24916#L12 assume !(1 == main_~i~0); 24914#L12-2 assume !(10 == main_~i~0); 24912#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 24910#L18-1 assume !!(main_~i~0 > 0); 24908#L12 assume !(1 == main_~i~0); 24906#L12-2 assume !(10 == main_~i~0); 24904#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 24902#L18-1 assume !!(main_~i~0 > 0); 24900#L12 assume !(1 == main_~i~0); 24898#L12-2 assume !(10 == main_~i~0); 24896#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 24894#L18-1 assume !!(main_~i~0 > 0); 24782#L12 assume !(1 == main_~i~0); 24891#L12-2 assume !(10 == main_~i~0); 24783#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 24781#L18-1 assume !!(main_~i~0 > 0); 24780#L12 assume !(1 == main_~i~0); 24779#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 24756#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 24757#L18-1 assume !!(main_~i~0 > 0); 24883#L12 assume !(1 == main_~i~0); 24882#L12-2 assume !(10 == main_~i~0); 24881#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 24880#L18-1 assume !!(main_~i~0 > 0); 24878#L12 assume !(1 == main_~i~0); 24875#L12-2 assume !(10 == main_~i~0); 24873#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 24871#L18-1 assume !!(main_~i~0 > 0); 24869#L12 assume !(1 == main_~i~0); 24867#L12-2 assume !(10 == main_~i~0); 24865#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 24863#L18-1 assume !!(main_~i~0 > 0); 24861#L12 assume !(1 == main_~i~0); 24859#L12-2 assume !(10 == main_~i~0); 24857#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 24855#L18-1 assume !!(main_~i~0 > 0); 24853#L12 assume !(1 == main_~i~0); 24851#L12-2 assume !(10 == main_~i~0); 24849#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 24847#L18-1 assume !!(main_~i~0 > 0); 24845#L12 assume !(1 == main_~i~0); 24843#L12-2 assume !(10 == main_~i~0); 24841#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 24839#L18-1 assume !!(main_~i~0 > 0); 24837#L12 assume !(1 == main_~i~0); 24835#L12-2 assume !(10 == main_~i~0); 24833#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 24831#L18-1 assume !!(main_~i~0 > 0); 24829#L12 assume !(1 == main_~i~0); 24822#L12-2 assume !(10 == main_~i~0); 24826#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 24824#L18-1 assume !!(main_~i~0 > 0); 24821#L12 assume 1 == main_~i~0;main_~up~0 := 1; 24816#L12-2 [2021-10-28 23:42:07,170 INFO L793 eck$LassoCheckResult]: Loop: 24816#L12-2 assume !(10 == main_~i~0); 24813#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 24812#L18-1 assume !!(main_~i~0 > 0); 24811#L12 assume !(1 == main_~i~0); 24810#L12-2 assume !(10 == main_~i~0); 24809#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 24808#L18-1 assume !!(main_~i~0 > 0); 24807#L12 assume !(1 == main_~i~0); 24806#L12-2 assume !(10 == main_~i~0); 24805#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 24804#L18-1 assume !!(main_~i~0 > 0); 24803#L12 assume !(1 == main_~i~0); 24802#L12-2 assume !(10 == main_~i~0); 24801#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 24800#L18-1 assume !!(main_~i~0 > 0); 24799#L12 assume !(1 == main_~i~0); 24798#L12-2 assume !(10 == main_~i~0); 24797#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 24796#L18-1 assume !!(main_~i~0 > 0); 24795#L12 assume !(1 == main_~i~0); 24794#L12-2 assume !(10 == main_~i~0); 24793#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 24792#L18-1 assume !!(main_~i~0 > 0); 24791#L12 assume !(1 == main_~i~0); 24790#L12-2 assume !(10 == main_~i~0); 24789#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 24788#L18-1 assume !!(main_~i~0 > 0); 24787#L12 assume !(1 == main_~i~0); 24786#L12-2 assume !(10 == main_~i~0); 24785#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 24784#L18-1 assume !!(main_~i~0 > 0); 24777#L12 assume !(1 == main_~i~0); 24776#L12-2 assume !(10 == main_~i~0); 24774#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 24770#L18-1 assume !!(main_~i~0 > 0); 24768#L12 assume !(1 == main_~i~0); 24769#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 24766#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 24879#L18-1 assume !!(main_~i~0 > 0); 24876#L12 assume !(1 == main_~i~0); 24767#L12-2 assume !(10 == main_~i~0); 24763#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 24764#L18-1 assume !!(main_~i~0 > 0); 24877#L12 assume !(1 == main_~i~0); 24874#L12-2 assume !(10 == main_~i~0); 24872#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 24870#L18-1 assume !!(main_~i~0 > 0); 24868#L12 assume !(1 == main_~i~0); 24866#L12-2 assume !(10 == main_~i~0); 24864#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 24862#L18-1 assume !!(main_~i~0 > 0); 24860#L12 assume !(1 == main_~i~0); 24858#L12-2 assume !(10 == main_~i~0); 24856#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 24854#L18-1 assume !!(main_~i~0 > 0); 24852#L12 assume !(1 == main_~i~0); 24850#L12-2 assume !(10 == main_~i~0); 24848#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 24846#L18-1 assume !!(main_~i~0 > 0); 24844#L12 assume !(1 == main_~i~0); 24842#L12-2 assume !(10 == main_~i~0); 24840#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 24838#L18-1 assume !!(main_~i~0 > 0); 24836#L12 assume !(1 == main_~i~0); 24834#L12-2 assume !(10 == main_~i~0); 24832#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 24830#L18-1 assume !!(main_~i~0 > 0); 24828#L12 assume !(1 == main_~i~0); 24820#L12-2 assume !(10 == main_~i~0); 24825#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 24823#L18-1 assume !!(main_~i~0 > 0); 24819#L12 assume 1 == main_~i~0;main_~up~0 := 1; 24816#L12-2 [2021-10-28 23:42:07,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:42:07,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1439876841, now seen corresponding path program 16 times [2021-10-28 23:42:07,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:42:07,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388174036] [2021-10-28 23:42:07,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:42:07,171 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:42:07,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:42:07,182 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:42:07,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:42:07,192 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:42:07,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:42:07,193 INFO L85 PathProgramCache]: Analyzing trace with hash -680570443, now seen corresponding path program 14 times [2021-10-28 23:42:07,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:42:07,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927799467] [2021-10-28 23:42:07,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:42:07,193 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:42:07,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:42:07,221 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:42:07,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:42:07,229 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:42:07,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:42:07,230 INFO L85 PathProgramCache]: Analyzing trace with hash -569285429, now seen corresponding path program 17 times [2021-10-28 23:42:07,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:42:07,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552236870] [2021-10-28 23:42:07,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:42:07,230 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:42:07,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:42:07,251 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:42:07,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:42:07,280 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:42:07,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 11:42:07 BoogieIcfgContainer [2021-10-28 23:42:07,975 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 23:42:07,976 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:42:07,976 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:42:07,976 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:42:07,977 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:41:37" (3/4) ... [2021-10-28 23:42:07,980 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-28 23:42:08,039 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:42:08,040 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:42:08,042 INFO L168 Benchmark]: Toolchain (without parser) took 30673.05 ms. Allocated memory was 107.0 MB in the beginning and 308.3 MB in the end (delta: 201.3 MB). Free memory was 67.3 MB in the beginning and 145.0 MB in the end (delta: -77.7 MB). Peak memory consumption was 123.6 MB. Max. memory is 16.1 GB. [2021-10-28 23:42:08,042 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 107.0 MB. Free memory was 83.7 MB in the beginning and 83.7 MB in the end (delta: 53.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:42:08,043 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.81 ms. Allocated memory is still 107.0 MB. Free memory was 67.1 MB in the beginning and 82.9 MB in the end (delta: -15.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:42:08,043 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.76 ms. Allocated memory is still 107.0 MB. Free memory was 82.9 MB in the beginning and 81.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:42:08,043 INFO L168 Benchmark]: Boogie Preprocessor took 22.42 ms. Allocated memory is still 107.0 MB. Free memory was 81.7 MB in the beginning and 80.8 MB in the end (delta: 896.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:42:08,044 INFO L168 Benchmark]: RCFGBuilder took 288.64 ms. Allocated memory is still 107.0 MB. Free memory was 80.8 MB in the beginning and 73.2 MB in the end (delta: 7.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:42:08,044 INFO L168 Benchmark]: BuchiAutomizer took 29980.23 ms. Allocated memory was 107.0 MB in the beginning and 308.3 MB in the end (delta: 201.3 MB). Free memory was 73.1 MB in the beginning and 150.3 MB in the end (delta: -77.2 MB). Peak memory consumption was 203.8 MB. Max. memory is 16.1 GB. [2021-10-28 23:42:08,045 INFO L168 Benchmark]: Witness Printer took 64.09 ms. Allocated memory is still 308.3 MB. Free memory was 150.3 MB in the beginning and 145.0 MB in the end (delta: 5.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:42:08,047 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 107.0 MB. Free memory was 83.7 MB in the beginning and 83.7 MB in the end (delta: 53.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 274.81 ms. Allocated memory is still 107.0 MB. Free memory was 67.1 MB in the beginning and 82.9 MB in the end (delta: -15.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.76 ms. Allocated memory is still 107.0 MB. Free memory was 82.9 MB in the beginning and 81.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.42 ms. Allocated memory is still 107.0 MB. Free memory was 81.7 MB in the beginning and 80.8 MB in the end (delta: 896.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 288.64 ms. Allocated memory is still 107.0 MB. Free memory was 80.8 MB in the beginning and 73.2 MB in the end (delta: 7.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 29980.23 ms. Allocated memory was 107.0 MB in the beginning and 308.3 MB in the end (delta: 201.3 MB). Free memory was 73.1 MB in the beginning and 150.3 MB in the end (delta: -77.2 MB). Peak memory consumption was 203.8 MB. Max. memory is 16.1 GB. * Witness Printer took 64.09 ms. Allocated memory is still 308.3 MB. Free memory was 150.3 MB in the beginning and 145.0 MB in the end (delta: 5.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 31 terminating modules (19 trivial, 11 deterministic, 1 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function i and consists of 4 locations. One deterministic module has affine ranking function i and consists of 4 locations. One deterministic module has affine ranking function -2 * i + 21 and consists of 5 locations. One deterministic module has affine ranking function i and consists of 4 locations. One deterministic module has affine ranking function -2 * i + 1 and consists of 5 locations. One deterministic module has affine ranking function i and consists of 10 locations. One deterministic module has affine ranking function i and consists of 12 locations. One deterministic module has affine ranking function i and consists of 14 locations. One deterministic module has affine ranking function i and consists of 16 locations. One deterministic module has affine ranking function i and consists of 18 locations. One deterministic module has affine ranking function i and consists of 20 locations. One nondeterministic module has affine ranking function -2 * i + 1 and consists of 5 locations. 19 modules have a trivial ranking function, the largest among these consists of 12 locations. The remainder module has 247 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 29.9s and 23 iterations. TraceHistogramMax:19. Analysis of lassos took 21.3s. Construction of modules took 1.4s. Büchi inclusion checks took 6.3s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 29. Automata minimization 0.2s AutomataMinimizationTime, 31 MinimizatonAttempts, 3072 StatesRemovedByMinimization, 28 NontrivialMinimizations. Non-live state removal took 0.2s Buchi closure took 0.0s. Biggest automaton had 247 states and ocurred in iteration 22. Nontrivial modules had stage [11, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 816/2384 HoareTripleCheckerStatistics: 233 SDtfs, 641 SDslu, 6 SDs, 0 SdLazy, 1769 SolverSat, 211 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT2 conc0 concLT0 SILN0 SILU0 SILI8 SILT9 lasso1 LassoPreprocessingBenchmarks: Lassos: inital16 mio100 ax177 hnf100 lsp36 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq196 hnf90 smp97 dnf114 smp98 tf110 neg98 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 192ms VariablesStem: 1 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 26 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 12 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 2.3s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 15]: 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 {up=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5b503853=0, \result=0, i=1} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 11]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] int up; [L8] i = __VERIFIER_nondet_int() [L9] up = 0 [L11] COND TRUE i > 0 [L12] COND TRUE i == 1 [L13] up = 1 [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND TRUE i == 10 [L16] up = 0 [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND TRUE i == 1 [L13] up = 1 Loop: [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND TRUE i == 10 [L16] up = 0 [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND TRUE i == 1 [L13] up = 1 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-28 23:42:08,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Forceful destruction successful, exit code 0 [2021-10-28 23:42:08,327 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Ended with exit code 0 [2021-10-28 23:42:08,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Forceful destruction successful, exit code 0 [2021-10-28 23:42:08,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2021-10-28 23:42:08,924 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0 [2021-10-28 23:42:09,126 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2021-10-28 23:42:09,324 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2021-10-28 23:42:09,524 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2021-10-28 23:42:09,724 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2021-10-28 23:42:09,921 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2021-10-28 23:42:10,121 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2021-10-28 23:42:10,322 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2021-10-28 23:42:10,521 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2021-10-28 23:42:10,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2021-10-28 23:42:10,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2021-10-28 23:42:11,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2021-10-28 23:42:11,326 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2021-10-28 23:42:11,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2021-10-28 23:42:11,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2021-10-28 23:42:11,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2021-10-28 23:42:12,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2021-10-28 23:42:12,326 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2021-10-28 23:42:12,530 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e11cdc0-3c56-46a2-81d9-46b0f49313d9/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...