./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_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/Ex08.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg --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 09:02:50,747 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:02:50,751 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:02:50,795 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:02:50,795 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:02:50,797 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:02:50,799 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:02:50,802 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:02:50,805 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:02:50,806 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:02:50,808 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:02:50,809 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:02:50,810 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:02:50,811 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:02:50,813 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:02:50,815 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:02:50,816 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:02:50,817 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:02:50,820 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:02:50,823 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:02:50,825 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:02:50,827 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:02:50,829 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:02:50,830 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:02:50,834 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:02:50,835 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:02:50,835 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:02:50,837 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:02:50,837 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:02:50,839 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:02:50,839 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:02:50,847 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:02:50,848 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:02:50,849 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:02:50,850 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:02:50,851 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:02:50,851 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:02:50,852 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:02:50,852 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:02:50,860 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:02:50,861 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:02:50,862 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-28 09:02:50,904 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:02:50,904 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:02:50,905 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:02:50,905 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:02:50,908 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:02:50,908 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:02:50,908 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:02:50,908 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 09:02:50,908 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 09:02:50,909 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 09:02:50,910 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 09:02:50,910 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 09:02:50,910 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 09:02:50,910 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:02:50,910 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:02:50,911 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:02:50,911 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:02:50,911 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 09:02:50,911 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 09:02:50,911 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 09:02:50,911 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:02:50,912 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 09:02:50,912 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:02:50,912 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 09:02:50,912 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:02:50,912 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:02:50,914 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:02:50,914 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:02:50,914 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:02:50,915 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 09:02:50,916 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_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e9f5cf3ddf7f2bce97ea02caa876a19793443837e6b09c62b997f759c9b40cc6 [2021-10-28 09:02:51,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:02:51,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:02:51,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:02:51,188 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:02:51,189 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:02:51,200 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/termination-restricted-15/Ex08.c [2021-10-28 09:02:51,284 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/data/13f07cb33/cdaa458617384608bf4e1e7b249fc8f5/FLAG49b33f351 [2021-10-28 09:02:51,680 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:02:51,681 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/sv-benchmarks/c/termination-restricted-15/Ex08.c [2021-10-28 09:02:51,694 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/data/13f07cb33/cdaa458617384608bf4e1e7b249fc8f5/FLAG49b33f351 [2021-10-28 09:02:52,093 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/data/13f07cb33/cdaa458617384608bf4e1e7b249fc8f5 [2021-10-28 09:02:52,096 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:02:52,097 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:02:52,099 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:02:52,099 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:02:52,118 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:02:52,119 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:02:52" (1/1) ... [2021-10-28 09:02:52,120 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@654bc493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:52, skipping insertion in model container [2021-10-28 09:02:52,120 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:02:52" (1/1) ... [2021-10-28 09:02:52,128 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:02:52,140 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:02:52,272 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:02:52,278 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:02:52,302 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:02:52,318 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:02:52,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:52 WrapperNode [2021-10-28 09:02:52,318 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:02:52,320 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:02:52,320 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:02:52,320 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:02:52,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:52" (1/1) ... [2021-10-28 09:02:52,331 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:52" (1/1) ... [2021-10-28 09:02:52,347 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:02:52,347 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:02:52,348 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:02:52,348 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:02:52,356 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:52" (1/1) ... [2021-10-28 09:02:52,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:52" (1/1) ... [2021-10-28 09:02:52,357 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:52" (1/1) ... [2021-10-28 09:02:52,358 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:52" (1/1) ... [2021-10-28 09:02:52,359 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:52" (1/1) ... [2021-10-28 09:02:52,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:52" (1/1) ... [2021-10-28 09:02:52,364 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:52" (1/1) ... [2021-10-28 09:02:52,365 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:02:52,366 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:02:52,366 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:02:52,366 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:02:52,368 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:52" (1/1) ... [2021-10-28 09:02:52,376 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:52,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:52,416 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:52,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 09:02:52,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:02:52,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:02:52,608 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:02:52,608 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-28 09:02:52,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:02:52 BoogieIcfgContainer [2021-10-28 09:02:52,610 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:02:52,611 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 09:02:52,611 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 09:02:52,616 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 09:02:52,617 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:02:52,617 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 09:02:52" (1/3) ... [2021-10-28 09:02:52,618 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@764ca172 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 09:02:52, skipping insertion in model container [2021-10-28 09:02:52,619 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:02:52,619 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:52" (2/3) ... [2021-10-28 09:02:52,620 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@764ca172 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 09:02:52, skipping insertion in model container [2021-10-28 09:02:52,620 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:02:52,620 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:02:52" (3/3) ... [2021-10-28 09:02:52,621 INFO L389 chiAutomizerObserver]: Analyzing ICFG Ex08.c [2021-10-28 09:02:52,691 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 09:02:52,691 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 09:02:52,692 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 09:02:52,692 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 09:02:52,692 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 09:02:52,692 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 09:02:52,692 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 09:02:52,692 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 09:02:52,707 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 09:02:52,726 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-28 09:02:52,726 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:02:52,726 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:02:52,732 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-28 09:02:52,732 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-28 09:02:52,732 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 09:02:52,733 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 09:02:52,734 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-28 09:02:52,734 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:02:52,735 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:02:52,735 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-28 09:02:52,735 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-28 09:02:52,742 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 09:02:52,742 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 09:02:52,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:02:52,756 INFO L85 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-10-28 09:02:52,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:02:52,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923752244] [2021-10-28 09:02:52,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:02:52,770 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:02:52,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:02:52,858 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:02:52,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:02:52,884 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:02:52,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:02:52,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1234538, now seen corresponding path program 1 times [2021-10-28 09:02:52,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:02:52,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229554079] [2021-10-28 09:02:52,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:02:52,889 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:02:52,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:02:52,970 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 09:02:52,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:02:52,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229554079] [2021-10-28 09:02:52,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229554079] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:02:52,971 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:02:52,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:02:52,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935514255] [2021-10-28 09:02:52,977 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:02:52,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:02:52,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:02:52,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:02:52,994 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 09:02:53,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:02:53,031 INFO L93 Difference]: Finished difference Result 13 states and 19 transitions. [2021-10-28 09:02:53,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:02:53,033 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 19 transitions. [2021-10-28 09:02:53,034 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-10-28 09:02:53,039 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 9 states and 14 transitions. [2021-10-28 09:02:53,040 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2021-10-28 09:02:53,040 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2021-10-28 09:02:53,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 14 transitions. [2021-10-28 09:02:53,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:02:53,041 INFO L681 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2021-10-28 09:02:53,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 14 transitions. [2021-10-28 09:02:53,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-28 09:02:53,067 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 09:02:53,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 14 transitions. [2021-10-28 09:02:53,069 INFO L704 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2021-10-28 09:02:53,069 INFO L587 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2021-10-28 09:02:53,069 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 09:02:53,069 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 14 transitions. [2021-10-28 09:02:53,070 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-10-28 09:02:53,070 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:02:53,070 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:02:53,071 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-28 09:02:53,071 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-28 09:02:53,071 INFO L791 eck$LassoCheckResult]: Stem: 33#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 34#L18-1 [2021-10-28 09:02:53,071 INFO L793 eck$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 09:02:53,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:02:53,072 INFO L85 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2021-10-28 09:02:53,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:02:53,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766970882] [2021-10-28 09:02:53,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:02:53,073 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:02:53,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:02:53,089 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:02:53,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:02:53,093 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:02:53,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:02:53,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1236460, now seen corresponding path program 1 times [2021-10-28 09:02:53,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:02:53,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099614786] [2021-10-28 09:02:53,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:02:53,095 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:02:53,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:02:53,144 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 09:02:53,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:02:53,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099614786] [2021-10-28 09:02:53,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099614786] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:02:53,145 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:02:53,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 09:02:53,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867638654] [2021-10-28 09:02:53,146 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:02:53,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:02:53,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:02:53,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:02:53,148 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 09:02:53,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:02:53,174 INFO L93 Difference]: Finished difference Result 13 states and 20 transitions. [2021-10-28 09:02:53,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:02:53,175 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 20 transitions. [2021-10-28 09:02:53,177 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-10-28 09:02:53,178 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 13 states and 20 transitions. [2021-10-28 09:02:53,178 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2021-10-28 09:02:53,178 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2021-10-28 09:02:53,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 20 transitions. [2021-10-28 09:02:53,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:02:53,179 INFO L681 BuchiCegarLoop]: Abstraction has 13 states and 20 transitions. [2021-10-28 09:02:53,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 20 transitions. [2021-10-28 09:02:53,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-28 09:02:53,181 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 09:02:53,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 20 transitions. [2021-10-28 09:02:53,182 INFO L704 BuchiCegarLoop]: Abstraction has 13 states and 20 transitions. [2021-10-28 09:02:53,182 INFO L587 BuchiCegarLoop]: Abstraction has 13 states and 20 transitions. [2021-10-28 09:02:53,182 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 09:02:53,183 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 20 transitions. [2021-10-28 09:02:53,183 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-10-28 09:02:53,196 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:02:53,196 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:02:53,196 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-28 09:02:53,196 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-28 09:02:53,197 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 09:02:53,197 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 09:02:53,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:02:53,198 INFO L85 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 3 times [2021-10-28 09:02:53,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:02:53,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875944202] [2021-10-28 09:02:53,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:02:53,199 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:02:53,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:02:53,203 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:02:53,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:02:53,207 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:02:53,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:02:53,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1236462, now seen corresponding path program 1 times [2021-10-28 09:02:53,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:02:53,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488909090] [2021-10-28 09:02:53,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:02:53,209 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:02:53,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:02:53,237 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:02:53,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:02:53,249 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:02:53,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:02:53,251 INFO L85 PathProgramCache]: Analyzing trace with hash 29865613, now seen corresponding path program 1 times [2021-10-28 09:02:53,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:02:53,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338002764] [2021-10-28 09:02:53,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:02:53,254 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:02:53,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:02:53,262 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:02:53,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:02:53,281 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:02:53,361 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:02:53,362 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:02:53,362 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:02:53,362 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:02:53,362 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:02:53,363 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:53,363 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:02:53,363 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:02:53,363 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration3_Loop [2021-10-28 09:02:53,363 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:02:53,364 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:02:53,382 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 09:02:53,389 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 09:02:53,393 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 09:02:53,396 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 09:02:53,458 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:02:53,459 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:02:53,461 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:53,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:53,463 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:53,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-28 09:02:53,467 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:02:53,467 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:02:53,486 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:02:53,486 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 09:02:53,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:02:53,517 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:53,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:53,518 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:53,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-28 09:02:53,521 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:02:53,521 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:02:53,533 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:02:53,533 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 09:02:53,559 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2021-10-28 09:02:53,559 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:53,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:53,561 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:53,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-28 09:02:53,563 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:02:53,563 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:02:53,596 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:02:53,596 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 09:02:53,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:02:53,625 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:53,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:53,626 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:53,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-28 09:02:53,630 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:02:53,630 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:02:53,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-28 09:02:53,662 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:53,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:53,664 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:53,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-28 09:02:53,665 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:02:53,665 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:02:53,700 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:02:53,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-28 09:02:53,740 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:02:53,740 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:02:53,740 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:02:53,740 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:02:53,741 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:02:53,741 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:53,741 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:02:53,741 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:02:53,741 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration3_Loop [2021-10-28 09:02:53,741 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:02:53,741 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:02:53,743 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 09:02:53,747 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 09:02:53,750 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 09:02:53,753 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 09:02:53,813 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:02:53,818 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:02:53,819 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:53,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:53,831 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:53,845 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 09:02:53,855 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:02:53,855 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:02:53,855 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:02:53,855 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:02:53,866 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:02:53,867 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:02:53,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-28 09:02:53,896 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:02:53,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-28 09:02:53,937 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:53,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:53,939 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:53,941 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 09:02:53,950 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:02:53,951 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:02:53,951 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:02:53,951 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:02:53,957 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:02:53,957 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:02:53,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-28 09:02:53,968 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:02:53,995 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2021-10-28 09:02:53,995 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:53,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:53,996 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:54,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-28 09:02:54,005 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 09:02:54,012 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:02:54,012 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:02:54,013 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:02:54,013 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:02:54,013 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:02:54,014 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:02:54,014 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:02:54,020 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:02:54,041 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2021-10-28 09:02:54,042 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:54,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:54,043 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:54,045 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 09:02:54,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-28 09:02:54,052 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:02:54,052 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:02:54,052 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:02:54,052 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:02:54,052 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:02:54,054 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:02:54,054 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:02:54,066 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:02:54,069 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 09:02:54,070 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 09:02:54,071 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:54,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:54,076 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:54,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-28 09:02:54,079 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:02:54,079 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:02:54,080 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:02:54,080 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 09:02:54,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-28 09:02:54,106 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:02:54,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:02:54,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:02:54,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:02:54,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:02:54,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:02:54,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:02:54,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:02:54,186 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 09:02:54,190 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 09:02:54,190 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 09:02:54,249 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 09:02:54,250 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 09:02:54,250 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 09:02:54,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2021-10-28 09:02:54,253 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 1 letters. Loop has 4 letters. [2021-10-28 09:02:54,254 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:02:54,254 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 4 letters. [2021-10-28 09:02:54,255 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:02:54,255 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 1 letters. Loop has 8 letters. [2021-10-28 09:02:54,255 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:02:54,256 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 50 transitions. [2021-10-28 09:02:54,265 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 20 [2021-10-28 09:02:54,268 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 29 states and 43 transitions. [2021-10-28 09:02:54,268 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2021-10-28 09:02:54,269 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2021-10-28 09:02:54,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 43 transitions. [2021-10-28 09:02:54,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:02:54,270 INFO L681 BuchiCegarLoop]: Abstraction has 29 states and 43 transitions. [2021-10-28 09:02:54,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 43 transitions. [2021-10-28 09:02:54,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2021-10-28 09:02:54,276 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 09:02:54,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 35 transitions. [2021-10-28 09:02:54,277 INFO L704 BuchiCegarLoop]: Abstraction has 24 states and 35 transitions. [2021-10-28 09:02:54,278 INFO L587 BuchiCegarLoop]: Abstraction has 24 states and 35 transitions. [2021-10-28 09:02:54,278 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 09:02:54,278 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 35 transitions. [2021-10-28 09:02:54,281 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2021-10-28 09:02:54,281 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:02:54,281 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:02:54,282 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:02:54,282 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-28 09:02:54,282 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 09:02:54,282 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 09:02:54,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:02:54,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2021-10-28 09:02:54,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:02:54,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045347995] [2021-10-28 09:02:54,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:02:54,288 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:02:54,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:02:54,293 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:02:54,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:02:54,296 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:02:54,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:02:54,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1391414, now seen corresponding path program 1 times [2021-10-28 09:02:54,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:02:54,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50916595] [2021-10-28 09:02:54,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:02:54,298 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:02:54,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:02:54,318 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:02:54,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:02:54,323 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:02:54,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:02:54,323 INFO L85 PathProgramCache]: Analyzing trace with hash 925835935, now seen corresponding path program 1 times [2021-10-28 09:02:54,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:02:54,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461423916] [2021-10-28 09:02:54,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:02:54,324 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:02:54,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:02:54,343 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:02:54,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:02:54,348 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:02:54,395 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:02:54,395 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:02:54,395 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:02:54,396 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:02:54,396 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:02:54,396 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:54,396 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:02:54,396 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:02:54,396 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration4_Loop [2021-10-28 09:02:54,396 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:02:54,397 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:02:54,402 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 09:02:54,407 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 09:02:54,410 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 09:02:54,412 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 09:02:54,507 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:02:54,507 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:02:54,508 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:54,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:54,512 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:54,521 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:02:54,521 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:02:54,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-28 09:02:54,552 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:02:54,553 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 09:02:54,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-28 09:02:54,577 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:54,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:54,578 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:54,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-28 09:02:54,579 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:02:54,579 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:02:54,592 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:02:54,592 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 09:02:54,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-28 09:02:54,614 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:54,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:54,615 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:54,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-28 09:02:54,617 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:02:54,617 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:02:54,652 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:02:54,652 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 09:02:54,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-10-28 09:02:54,685 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:54,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:54,688 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:54,696 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:02:54,696 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:02:54,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-28 09:02:54,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-28 09:02:54,731 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:54,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:54,731 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:54,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-28 09:02:54,738 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:02:54,738 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:02:54,804 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:02:54,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-28 09:02:54,809 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:02:54,809 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:02:54,809 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:02:54,810 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:02:54,810 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:02:54,810 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:54,810 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:02:54,810 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:02:54,810 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration4_Loop [2021-10-28 09:02:54,810 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:02:54,810 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:02:54,811 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 09:02:54,818 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 09:02:54,820 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 09:02:54,823 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 09:02:54,926 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:02:54,926 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:02:54,927 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:54,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:54,928 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:54,933 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 09:02:54,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-28 09:02:54,943 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:02:54,943 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:02:54,943 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:02:54,943 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:02:54,948 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:02:54,949 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:02:54,968 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:02:55,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-10-28 09:02:55,008 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:55,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:55,009 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:55,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-10-28 09:02:55,020 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 09:02:55,029 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:02:55,029 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:02:55,029 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:02:55,029 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-28 09:02:55,029 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:02:55,030 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-28 09:02:55,030 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:02:55,048 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:02:55,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-10-28 09:02:55,080 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:55,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:55,084 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:55,089 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 09:02:55,098 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:02:55,099 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:02:55,099 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:02:55,099 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:02:55,102 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:02:55,102 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:02:55,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-10-28 09:02:55,131 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:02:55,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-10-28 09:02:55,168 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:55,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:55,170 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:55,175 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 09:02:55,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-10-28 09:02:55,189 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:02:55,190 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:02:55,190 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:02:55,190 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-28 09:02:55,190 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:02:55,193 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-28 09:02:55,193 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:02:55,206 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:02:55,209 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-28 09:02:55,209 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 09:02:55,209 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:55,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:55,245 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:55,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-10-28 09:02:55,251 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:02:55,252 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:02:55,252 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:02:55,252 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 09:02:55,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-10-28 09:02:55,282 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:02:55,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:02:55,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:02:55,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:02:55,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:02:55,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:02:55,312 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:02:55,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:02:55,381 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 09:02:55,383 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 09:02:55,383 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 09:02:55,425 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 09:02:55,425 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 09:02:55,426 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 09:02:55,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2021-10-28 09:02:55,427 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 4 letters. [2021-10-28 09:02:55,428 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:02:55,428 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 4 letters. [2021-10-28 09:02:55,429 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:02:55,429 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 8 letters. [2021-10-28 09:02:55,429 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:02:55,430 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 58 transitions. [2021-10-28 09:02:55,434 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-10-28 09:02:55,437 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 31 states and 48 transitions. [2021-10-28 09:02:55,437 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2021-10-28 09:02:55,437 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-10-28 09:02:55,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 48 transitions. [2021-10-28 09:02:55,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:02:55,438 INFO L681 BuchiCegarLoop]: Abstraction has 31 states and 48 transitions. [2021-10-28 09:02:55,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 48 transitions. [2021-10-28 09:02:55,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-10-28 09:02:55,444 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 09:02:55,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 48 transitions. [2021-10-28 09:02:55,445 INFO L704 BuchiCegarLoop]: Abstraction has 31 states and 48 transitions. [2021-10-28 09:02:55,446 INFO L587 BuchiCegarLoop]: Abstraction has 31 states and 48 transitions. [2021-10-28 09:02:55,446 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-28 09:02:55,446 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 48 transitions. [2021-10-28 09:02:55,448 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-10-28 09:02:55,448 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:02:55,448 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:02:55,449 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-10-28 09:02:55,449 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-28 09:02:55,449 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 09:02:55,449 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 09:02:55,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:02:55,450 INFO L85 PathProgramCache]: Analyzing trace with hash 29863751, now seen corresponding path program 1 times [2021-10-28 09:02:55,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:02:55,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65454691] [2021-10-28 09:02:55,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:02:55,455 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:02:55,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:02:55,476 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:02:55,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:02:55,482 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:02:55,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:02:55,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1236522, now seen corresponding path program 1 times [2021-10-28 09:02:55,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:02:55,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789530818] [2021-10-28 09:02:55,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:02:55,483 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:02:55,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:02:55,487 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:02:55,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:02:55,491 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:02:55,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:02:55,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1816492656, now seen corresponding path program 1 times [2021-10-28 09:02:55,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:02:55,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803314137] [2021-10-28 09:02:55,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:02:55,493 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:02:55,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:02:55,498 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:02:55,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:02:55,504 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:02:55,530 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:02:55,530 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:02:55,530 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:02:55,531 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:02:55,531 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:02:55,531 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:55,531 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:02:55,531 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:02:55,531 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration5_Loop [2021-10-28 09:02:55,531 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:02:55,531 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:02:55,533 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 09:02:55,535 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 09:02:55,537 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 09:02:55,545 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 09:02:55,619 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:02:55,619 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:02:55,619 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:55,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:55,620 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:55,629 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:02:55,629 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:02:55,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-10-28 09:02:55,656 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:02:55,656 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 09:02:55,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-10-28 09:02:55,684 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:55,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:55,685 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:55,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-10-28 09:02:55,690 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:02:55,691 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:02:55,703 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:02:55,704 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 09:02:55,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-10-28 09:02:55,726 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:55,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:55,727 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:55,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-10-28 09:02:55,729 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:02:55,729 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:02:55,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-10-28 09:02:55,756 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:55,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:55,757 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:55,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-10-28 09:02:55,800 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:02:55,800 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:02:55,804 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2021-10-28 09:02:55,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-28 09:02:55,865 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:02:55,865 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 09:02:55,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-10-28 09:02:55,898 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:55,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:55,899 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:55,904 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:02:55,904 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:02:55,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-10-28 09:02:55,924 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:02:55,924 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 09:02:55,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-10-28 09:02:55,998 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:02:55,998 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:02:55,998 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:02:55,998 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:02:55,998 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:02:55,998 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:55,998 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:02:55,998 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:02:55,998 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration5_Lasso [2021-10-28 09:02:55,998 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:02:55,998 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:02:56,000 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 09:02:56,006 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 09:02:56,008 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 09:02:56,011 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 09:02:56,014 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 09:02:56,025 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:02:56,144 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:02:56,145 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:02:56,145 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:56,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:56,147 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:56,149 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:02:56,149 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:02:56,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-10-28 09:02:56,168 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:02:56,168 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 09:02:56,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-10-28 09:02:56,202 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:56,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:56,204 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:56,208 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:02:56,208 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:02:56,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-10-28 09:02:56,256 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:02:56,256 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 09:02:56,285 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2021-10-28 09:02:56,286 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:56,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:56,287 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:56,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-10-28 09:02:56,292 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:02:56,292 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:02:56,305 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:02:56,305 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 09:02:56,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-10-28 09:02:56,335 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:56,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:56,336 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:56,338 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:02:56,338 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:02:56,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-10-28 09:02:56,361 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:02:56,361 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 09:02:56,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-10-28 09:02:56,380 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:56,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:56,381 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:56,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-10-28 09:02:56,382 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:02:56,382 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:02:56,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-10-28 09:02:56,426 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:56,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:56,427 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:56,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-10-28 09:02:56,436 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:02:56,436 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:02:56,476 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:02:56,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-10-28 09:02:56,479 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:02:56,479 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:02:56,479 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:02:56,479 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:02:56,479 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:02:56,479 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:56,479 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:02:56,479 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:02:56,479 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration5_Lasso [2021-10-28 09:02:56,479 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:02:56,479 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:02:56,481 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 09:02:56,483 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 09:02:56,485 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 09:02:56,501 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 09:02:56,504 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 09:02:56,512 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 09:02:56,601 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:02:56,601 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:02:56,601 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:56,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:56,603 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:56,611 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 09:02:56,619 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:02:56,620 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:02:56,620 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:02:56,620 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:02:56,620 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:02:56,621 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:02:56,621 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:02:56,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-10-28 09:02:56,632 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:02:56,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-10-28 09:02:56,656 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:56,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:56,657 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:56,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-10-28 09:02:56,660 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 09:02:56,667 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:02:56,667 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:02:56,668 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:02:56,668 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:02:56,668 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:02:56,668 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:02:56,668 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:02:56,690 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:02:56,709 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Ended with exit code 0 [2021-10-28 09:02:56,709 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:56,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:56,710 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:56,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-10-28 09:02:56,711 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 09:02:56,718 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:02:56,718 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:02:56,719 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:02:56,719 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:02:56,720 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:02:56,721 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:02:56,748 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:02:56,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2021-10-28 09:02:56,780 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:56,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:56,781 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:56,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-10-28 09:02:56,783 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 09:02:56,790 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:02:56,790 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:02:56,790 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:02:56,790 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:02:56,792 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:02:56,792 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:02:56,807 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:02:56,839 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2021-10-28 09:02:56,839 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:56,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:56,841 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:56,844 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 09:02:56,853 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:02:56,853 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:02:56,853 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-28 09:02:56,853 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:02:56,861 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2021-10-28 09:02:56,861 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2021-10-28 09:02:56,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-10-28 09:02:56,896 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:02:56,914 INFO L443 ModelExtractionUtils]: Simplification made 8 calls to the SMT solver. [2021-10-28 09:02:56,915 INFO L444 ModelExtractionUtils]: 3 out of 11 variables were initially zero. Simplification set additionally 3 variables to zero. [2021-10-28 09:02:56,915 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:56,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:56,920 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:56,922 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:02:56,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-10-28 09:02:56,954 INFO L438 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2021-10-28 09:02:56,954 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:02:56,954 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 09:02:56,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2021-10-28 09:02:56,991 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2021-10-28 09:02:57,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:02:57,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:02:57,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:02:57,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:02:57,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:02:57,072 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 09:02:57,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:02:57,139 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 09:02:57,140 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 09:02:57,140 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 09:02:57,205 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 09:02:57,206 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 09:02:57,206 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 09:02:57,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 20 transitions. [2021-10-28 09:02:57,206 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 5 letters. Loop has 4 letters. [2021-10-28 09:02:57,206 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:02:57,206 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 9 letters. Loop has 4 letters. [2021-10-28 09:02:57,207 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:02:57,207 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 5 letters. Loop has 8 letters. [2021-10-28 09:02:57,207 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:02:57,207 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 67 transitions. [2021-10-28 09:02:57,208 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-10-28 09:02:57,209 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 44 states and 66 transitions. [2021-10-28 09:02:57,209 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2021-10-28 09:02:57,210 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2021-10-28 09:02:57,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 66 transitions. [2021-10-28 09:02:57,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:02:57,210 INFO L681 BuchiCegarLoop]: Abstraction has 44 states and 66 transitions. [2021-10-28 09:02:57,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states and 66 transitions. [2021-10-28 09:02:57,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2021-10-28 09:02:57,213 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 09:02:57,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 63 transitions. [2021-10-28 09:02:57,214 INFO L704 BuchiCegarLoop]: Abstraction has 41 states and 63 transitions. [2021-10-28 09:02:57,214 INFO L587 BuchiCegarLoop]: Abstraction has 41 states and 63 transitions. [2021-10-28 09:02:57,214 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-28 09:02:57,214 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 41 states and 63 transitions. [2021-10-28 09:02:57,220 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-10-28 09:02:57,222 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:02:57,222 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:02:57,222 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1] [2021-10-28 09:02:57,224 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-28 09:02:57,224 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 09:02:57,224 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 09:02:57,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:02:57,225 INFO L85 PathProgramCache]: Analyzing trace with hash 612785863, now seen corresponding path program 1 times [2021-10-28 09:02:57,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:02:57,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196387331] [2021-10-28 09:02:57,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:02:57,226 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:02:57,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:02:57,266 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 09:02:57,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:02:57,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196387331] [2021-10-28 09:02:57,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196387331] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:02:57,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772369258] [2021-10-28 09:02:57,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:02:57,267 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:02:57,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:57,272 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:02:57,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-10-28 09:02:57,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:02:57,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 09:02:57,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:02:57,334 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 09:02:57,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772369258] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:02:57,335 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:02:57,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-10-28 09:02:57,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46681454] [2021-10-28 09:02:57,336 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:02:57,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:02:57,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1737972, now seen corresponding path program 2 times [2021-10-28 09:02:57,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:02:57,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20471834] [2021-10-28 09:02:57,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:02:57,337 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:02:57,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:02:57,340 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:02:57,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:02:57,344 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:02:57,376 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:02:57,376 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:02:57,376 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:02:57,376 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:02:57,376 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:02:57,377 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:57,377 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:02:57,377 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:02:57,377 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration6_Loop [2021-10-28 09:02:57,377 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:02:57,377 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:02:57,379 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 09:02:57,383 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 09:02:57,386 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 09:02:57,389 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 09:02:57,443 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:02:57,444 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:02:57,444 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:57,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:57,453 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:57,459 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:02:57,459 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:02:57,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-10-28 09:02:57,480 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:02:57,480 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 09:02:57,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2021-10-28 09:02:57,508 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:57,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:57,509 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:57,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-10-28 09:02:57,510 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:02:57,510 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:02:57,531 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:02:57,532 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 09:02:57,550 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2021-10-28 09:02:57,551 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:57,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:57,552 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:57,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-10-28 09:02:57,553 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:02:57,553 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:02:57,566 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:02:57,566 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 09:02:57,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Ended with exit code 0 [2021-10-28 09:02:57,586 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:57,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:57,589 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:57,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-10-28 09:02:57,598 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:02:57,598 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:02:57,625 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Ended with exit code 0 [2021-10-28 09:02:57,625 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:57,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:57,626 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:57,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-10-28 09:02:57,628 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:02:57,628 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:02:57,749 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:02:57,751 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Ended with exit code 0 [2021-10-28 09:02:57,751 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:02:57,751 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:02:57,751 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:02:57,751 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:02:57,751 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:02:57,752 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:57,752 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:02:57,752 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:02:57,752 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration6_Loop [2021-10-28 09:02:57,752 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:02:57,752 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:02:57,753 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 09:02:57,760 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 09:02:57,762 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 09:02:57,764 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 09:02:57,832 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:02:57,832 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:02:57,833 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:57,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:57,834 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:57,835 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 09:02:57,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2021-10-28 09:02:57,843 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:02:57,843 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:02:57,843 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:02:57,843 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-28 09:02:57,843 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:02:57,845 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-28 09:02:57,845 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:02:57,858 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:02:57,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2021-10-28 09:02:57,879 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:57,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:57,879 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:57,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-10-28 09:02:57,883 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 09:02:57,890 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:02:57,890 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:02:57,890 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:02:57,890 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:02:57,892 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:02:57,892 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:02:57,906 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:02:57,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2021-10-28 09:02:57,926 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:57,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:57,927 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:57,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-10-28 09:02:57,929 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 09:02:57,936 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:02:57,936 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:02:57,936 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:02:57,936 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:02:57,937 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:02:57,937 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:02:57,940 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:02:57,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2021-10-28 09:02:57,960 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:57,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:57,961 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:57,990 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 09:02:57,999 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:02:57,999 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:02:57,999 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:02:57,999 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:02:58,000 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:02:58,000 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:02:58,001 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:02:58,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-10-28 09:02:58,016 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:02:58,019 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 09:02:58,020 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 09:02:58,020 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:58,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:58,021 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:58,023 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:02:58,023 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:02:58,023 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:02:58,023 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 09:02:58,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-10-28 09:02:58,052 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Ended with exit code 0 [2021-10-28 09:02:58,052 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:02:58,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:02:58,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:02:58,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:02:58,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:02:58,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:02:58,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:02:58,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:02:58,130 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 09:02:58,131 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 09:02:58,131 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 09:02:58,158 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 09:02:58,160 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 09:02:58,161 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 09:02:58,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2021-10-28 09:02:58,161 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 8 letters. Loop has 4 letters. [2021-10-28 09:02:58,161 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:02:58,161 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 12 letters. Loop has 4 letters. [2021-10-28 09:02:58,161 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:02:58,162 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 8 letters. Loop has 8 letters. [2021-10-28 09:02:58,162 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:02:58,162 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 104 states and 159 transitions. [2021-10-28 09:02:58,164 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-10-28 09:02:58,166 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 104 states to 86 states and 132 transitions. [2021-10-28 09:02:58,166 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2021-10-28 09:02:58,166 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2021-10-28 09:02:58,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 86 states and 132 transitions. [2021-10-28 09:02:58,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:02:58,166 INFO L681 BuchiCegarLoop]: Abstraction has 86 states and 132 transitions. [2021-10-28 09:02:58,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states and 132 transitions. [2021-10-28 09:02:58,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 81. [2021-10-28 09:02:58,176 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 09:02:58,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 126 transitions. [2021-10-28 09:02:58,179 INFO L704 BuchiCegarLoop]: Abstraction has 81 states and 126 transitions. [2021-10-28 09:02:58,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:02:58,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:02:58,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:02:58,180 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 09:02:58,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:02:58,214 INFO L93 Difference]: Finished difference Result 115 states and 174 transitions. [2021-10-28 09:02:58,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:02:58,214 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 115 states and 174 transitions. [2021-10-28 09:02:58,217 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 36 [2021-10-28 09:02:58,223 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 115 states to 115 states and 174 transitions. [2021-10-28 09:02:58,224 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 65 [2021-10-28 09:02:58,225 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 65 [2021-10-28 09:02:58,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 115 states and 174 transitions. [2021-10-28 09:02:58,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:02:58,225 INFO L681 BuchiCegarLoop]: Abstraction has 115 states and 174 transitions. [2021-10-28 09:02:58,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states and 174 transitions. [2021-10-28 09:02:58,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 97. [2021-10-28 09:02:58,239 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 09:02:58,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 150 transitions. [2021-10-28 09:02:58,242 INFO L704 BuchiCegarLoop]: Abstraction has 97 states and 150 transitions. [2021-10-28 09:02:58,242 INFO L587 BuchiCegarLoop]: Abstraction has 97 states and 150 transitions. [2021-10-28 09:02:58,242 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-10-28 09:02:58,242 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 97 states and 150 transitions. [2021-10-28 09:02:58,244 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 28 [2021-10-28 09:02:58,244 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:02:58,244 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:02:58,246 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2021-10-28 09:02:58,246 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-28 09:02:58,246 INFO L791 eck$LassoCheckResult]: Stem: 821#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 822#L18-1 assume !!(main_~i~0 > 0); 834#L12 assume 1 == main_~i~0;main_~up~0 := 1; 830#L12-2 assume !(10 == main_~i~0); 828#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 829#L18-1 assume !!(main_~i~0 > 0); 881#L12 assume !(1 == main_~i~0); 875#L12-2 assume !(10 == main_~i~0); 890#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 871#L18-1 [2021-10-28 09:02:58,246 INFO L793 eck$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 09:02:58,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:02:58,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1816492658, now seen corresponding path program 1 times [2021-10-28 09:02:58,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:02:58,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206893862] [2021-10-28 09:02:58,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:02:58,250 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:02:58,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:02:58,298 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 09:02:58,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:02:58,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206893862] [2021-10-28 09:02:58,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206893862] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:02:58,299 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:02:58,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 09:02:58,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131720294] [2021-10-28 09:02:58,299 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:02:58,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:02:58,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1234602, now seen corresponding path program 1 times [2021-10-28 09:02:58,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:02:58,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658052371] [2021-10-28 09:02:58,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:02:58,300 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:02:58,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:02:58,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2021-10-28 09:02:58,332 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 09:02:58,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:02:58,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658052371] [2021-10-28 09:02:58,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658052371] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:02:58,333 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:02:58,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 09:02:58,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615629526] [2021-10-28 09:02:58,336 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:02:58,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:02:58,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:02:58,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:02:58,337 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 09:02:58,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2021-10-28 09:02:58,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:02:58,363 INFO L93 Difference]: Finished difference Result 77 states and 103 transitions. [2021-10-28 09:02:58,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:02:58,365 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 77 states and 103 transitions. [2021-10-28 09:02:58,366 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2021-10-28 09:02:58,366 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 77 states to 63 states and 81 transitions. [2021-10-28 09:02:58,366 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2021-10-28 09:02:58,367 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 31 [2021-10-28 09:02:58,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 81 transitions. [2021-10-28 09:02:58,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:02:58,367 INFO L681 BuchiCegarLoop]: Abstraction has 63 states and 81 transitions. [2021-10-28 09:02:58,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states and 81 transitions. [2021-10-28 09:02:58,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 60. [2021-10-28 09:02:58,370 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 09:02:58,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 78 transitions. [2021-10-28 09:02:58,371 INFO L704 BuchiCegarLoop]: Abstraction has 60 states and 78 transitions. [2021-10-28 09:02:58,371 INFO L587 BuchiCegarLoop]: Abstraction has 60 states and 78 transitions. [2021-10-28 09:02:58,371 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-10-28 09:02:58,371 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 60 states and 78 transitions. [2021-10-28 09:02:58,372 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2021-10-28 09:02:58,372 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:02:58,372 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:02:58,372 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 2, 2, 2, 2, 1, 1, 1] [2021-10-28 09:02:58,373 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-28 09:02:58,373 INFO L791 eck$LassoCheckResult]: Stem: 997#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 998#L18-1 assume !!(main_~i~0 > 0); 1039#L12 assume 1 == main_~i~0;main_~up~0 := 1; 1044#L12-2 assume !(10 == main_~i~0); 1008#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 999#L18-1 assume !!(main_~i~0 > 0); 1000#L12 assume !(1 == main_~i~0); 1051#L12-2 assume !(10 == main_~i~0); 1049#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1047#L18-1 assume !!(main_~i~0 > 0); 1005#L12 assume !(1 == main_~i~0); 1006#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 1003#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1001#L18-1 assume !!(main_~i~0 > 0); 1002#L12 assume 1 == main_~i~0;main_~up~0 := 1; 993#L12-2 [2021-10-28 09:02:58,373 INFO L793 eck$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 09:02:58,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:02:58,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1399375584, now seen corresponding path program 1 times [2021-10-28 09:02:58,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:02:58,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439586919] [2021-10-28 09:02:58,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:02:58,374 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:02:58,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:02:58,404 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 09:02:58,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:02:58,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439586919] [2021-10-28 09:02:58,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439586919] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:02:58,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:02:58,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:02:58,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661429252] [2021-10-28 09:02:58,406 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:02:58,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:02:58,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1573480, now seen corresponding path program 1 times [2021-10-28 09:02:58,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:02:58,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042553768] [2021-10-28 09:02:58,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:02:58,410 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:02:58,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:02:58,421 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:02:58,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:02:58,427 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:02:58,450 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:02:58,450 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:02:58,450 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:02:58,450 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:02:58,450 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:02:58,450 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:58,450 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:02:58,451 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:02:58,451 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration8_Loop [2021-10-28 09:02:58,451 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:02:58,451 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:02:58,452 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 09:02:58,454 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 09:02:58,457 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 09:02:58,460 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 09:02:58,514 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:02:58,514 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:02:58,514 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:58,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:58,515 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:58,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2021-10-28 09:02:58,517 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:02:58,517 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:02:58,531 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:02:58,531 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 09:02:58,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2021-10-28 09:02:58,551 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:58,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:58,551 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:58,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2021-10-28 09:02:58,553 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:02:58,553 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:02:58,561 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:02:58,561 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 09:02:58,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Ended with exit code 0 [2021-10-28 09:02:58,586 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:58,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:58,588 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:58,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2021-10-28 09:02:58,589 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:02:58,589 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:02:58,601 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:02:58,602 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 09:02:58,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Forceful destruction successful, exit code 0 [2021-10-28 09:02:58,621 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:58,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:58,622 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:58,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2021-10-28 09:02:58,623 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:02:58,623 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:02:58,649 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Ended with exit code 0 [2021-10-28 09:02:58,650 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:58,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:58,650 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:58,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2021-10-28 09:02:58,651 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:02:58,652 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:02:58,718 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:02:58,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Forceful destruction successful, exit code 0 [2021-10-28 09:02:58,720 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:02:58,720 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:02:58,720 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:02:58,720 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:02:58,720 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:02:58,720 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:58,720 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:02:58,720 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:02:58,720 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration8_Loop [2021-10-28 09:02:58,720 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:02:58,721 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:02:58,721 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 09:02:58,737 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 09:02:58,739 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 09:02:58,744 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 09:02:58,786 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:02:58,786 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:02:58,786 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:58,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:58,788 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:58,800 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 09:02:58,809 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:02:58,809 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:02:58,810 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:02:58,810 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:02:58,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2021-10-28 09:02:58,811 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:02:58,811 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:02:58,816 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:02:58,836 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Ended with exit code 0 [2021-10-28 09:02:58,836 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:58,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:58,837 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:58,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2021-10-28 09:02:58,838 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 09:02:58,845 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:02:58,845 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:02:58,845 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:02:58,845 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:02:58,847 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:02:58,847 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:02:58,849 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:02:58,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Forceful destruction successful, exit code 0 [2021-10-28 09:02:58,885 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:58,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:58,886 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:58,887 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 09:02:58,896 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:02:58,896 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:02:58,897 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:02:58,897 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:02:58,897 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:02:58,898 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:02:58,898 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:02:58,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2021-10-28 09:02:58,908 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:02:58,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Forceful destruction successful, exit code 0 [2021-10-28 09:02:58,941 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:58,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:58,944 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:58,946 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 09:02:58,955 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:02:58,955 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:02:58,955 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:02:58,955 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:02:58,955 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:02:58,956 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:02:58,956 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:02:58,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2021-10-28 09:02:58,976 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:02:58,978 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 09:02:58,978 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 09:02:58,978 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:58,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:58,980 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:58,984 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:02:58,984 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:02:58,985 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:02:58,985 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 09:02:59,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2021-10-28 09:02:59,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Forceful destruction successful, exit code 0 [2021-10-28 09:02:59,018 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:02:59,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:02:59,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:02:59,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:02:59,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:02:59,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:02:59,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:02:59,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:02:59,130 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 09:02:59,131 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 09:02:59,131 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 09:02:59,187 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 09:02:59,188 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 09:02:59,188 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 09:02:59,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 22 transitions. [2021-10-28 09:02:59,188 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 15 letters. Loop has 4 letters. [2021-10-28 09:02:59,189 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:02:59,189 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 19 letters. Loop has 4 letters. [2021-10-28 09:02:59,189 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:02:59,189 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 15 letters. Loop has 8 letters. [2021-10-28 09:02:59,190 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:02:59,190 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 119 states and 154 transitions. [2021-10-28 09:02:59,192 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 25 [2021-10-28 09:02:59,193 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 119 states to 115 states and 148 transitions. [2021-10-28 09:02:59,193 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 40 [2021-10-28 09:02:59,193 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2021-10-28 09:02:59,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 115 states and 148 transitions. [2021-10-28 09:02:59,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:02:59,194 INFO L681 BuchiCegarLoop]: Abstraction has 115 states and 148 transitions. [2021-10-28 09:02:59,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states and 148 transitions. [2021-10-28 09:02:59,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 101. [2021-10-28 09:02:59,199 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 09:02:59,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 132 transitions. [2021-10-28 09:02:59,200 INFO L704 BuchiCegarLoop]: Abstraction has 101 states and 132 transitions. [2021-10-28 09:02:59,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:02:59,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:02:59,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:02:59,201 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 09:02:59,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:02:59,217 INFO L93 Difference]: Finished difference Result 97 states and 122 transitions. [2021-10-28 09:02:59,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:02:59,217 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 97 states and 122 transitions. [2021-10-28 09:02:59,218 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 18 [2021-10-28 09:02:59,219 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 97 states to 92 states and 116 transitions. [2021-10-28 09:02:59,220 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2021-10-28 09:02:59,220 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2021-10-28 09:02:59,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 92 states and 116 transitions. [2021-10-28 09:02:59,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:02:59,220 INFO L681 BuchiCegarLoop]: Abstraction has 92 states and 116 transitions. [2021-10-28 09:02:59,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states and 116 transitions. [2021-10-28 09:02:59,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 74. [2021-10-28 09:02:59,223 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 09:02:59,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 95 transitions. [2021-10-28 09:02:59,224 INFO L704 BuchiCegarLoop]: Abstraction has 74 states and 95 transitions. [2021-10-28 09:02:59,224 INFO L587 BuchiCegarLoop]: Abstraction has 74 states and 95 transitions. [2021-10-28 09:02:59,224 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-10-28 09:02:59,225 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 74 states and 95 transitions. [2021-10-28 09:02:59,225 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-10-28 09:02:59,226 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:02:59,226 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:02:59,226 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 3, 3, 2, 2, 2, 1, 1] [2021-10-28 09:02:59,226 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-28 09:02:59,227 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 09:02:59,227 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 09:02:59,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:02:59,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1376811083, now seen corresponding path program 2 times [2021-10-28 09:02:59,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:02:59,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620283693] [2021-10-28 09:02:59,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:02:59,228 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:02:59,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:02:59,256 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 09:02:59,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:02:59,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620283693] [2021-10-28 09:02:59,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620283693] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:02:59,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765075289] [2021-10-28 09:02:59,257 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:02:59,257 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:02:59,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:59,258 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:02:59,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2021-10-28 09:02:59,320 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:02:59,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:02:59,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:02:59,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:02:59,376 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 09:02:59,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765075289] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:02:59,377 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:02:59,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-10-28 09:02:59,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725153127] [2021-10-28 09:02:59,378 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:02:59,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:02:59,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1573480, now seen corresponding path program 2 times [2021-10-28 09:02:59,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:02:59,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506762664] [2021-10-28 09:02:59,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:02:59,380 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:02:59,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:02:59,385 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:02:59,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:02:59,399 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:02:59,423 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:02:59,423 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:02:59,423 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:02:59,423 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:02:59,423 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:02:59,424 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:59,424 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:02:59,424 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:02:59,424 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration9_Loop [2021-10-28 09:02:59,424 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:02:59,424 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:02:59,424 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 09:02:59,434 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 09:02:59,436 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 09:02:59,440 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 09:02:59,492 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:02:59,492 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:02:59,492 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:59,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:59,496 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:59,501 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:02:59,501 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:02:59,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2021-10-28 09:02:59,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Forceful destruction successful, exit code 0 [2021-10-28 09:02:59,529 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:59,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:59,531 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:59,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2021-10-28 09:02:59,533 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:02:59,533 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:02:59,640 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:02:59,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Forceful destruction successful, exit code 0 [2021-10-28 09:02:59,645 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:02:59,645 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:02:59,645 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:02:59,646 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:02:59,646 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:02:59,646 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:59,646 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:02:59,646 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:02:59,646 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration9_Loop [2021-10-28 09:02:59,646 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:02:59,646 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:02:59,647 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 09:02:59,651 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 09:02:59,654 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 09:02:59,656 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 09:02:59,693 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:02:59,693 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:02:59,693 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:59,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:59,694 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:59,704 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:02:59,713 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:02:59,713 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:02:59,713 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:02:59,713 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:02:59,713 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:02:59,714 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:02:59,715 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:02:59,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Waiting until timeout for monitored process [2021-10-28 09:02:59,732 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:02:59,734 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 09:02:59,734 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 09:02:59,734 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:02:59,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:59,740 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:59,741 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:02:59,741 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:02:59,741 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:02:59,741 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 09:02:59,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Waiting until timeout for monitored process [2021-10-28 09:02:59,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Forceful destruction successful, exit code 0 [2021-10-28 09:02:59,775 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:02:59,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:02:59,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:02:59,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:02:59,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:02:59,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:02:59,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:02:59,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:02:59,886 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 09:02:59,887 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 09:02:59,887 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 09:02:59,938 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 09:02:59,938 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 09:02:59,939 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 09:02:59,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2021-10-28 09:02:59,939 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 19 letters. Loop has 4 letters. [2021-10-28 09:02:59,939 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:02:59,939 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 09:02:59,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:02:59,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:02:59,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:02:59,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:00,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:00,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:03:00,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:00,049 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 09:03:00,050 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 09:03:00,050 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 09:03:00,097 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 09:03:00,097 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 09:03:00,097 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 09:03:00,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2021-10-28 09:03:00,098 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 19 letters. Loop has 4 letters. [2021-10-28 09:03:00,098 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:03:00,098 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 09:03:00,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:00,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:00,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:03:00,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:00,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:00,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:00,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:00,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:03:00,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:00,242 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 09:03:00,243 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 09:03:00,243 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 09:03:00,312 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 09:03:00,312 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 09:03:00,313 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 09:03:00,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 23 transitions. [2021-10-28 09:03:00,313 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 19 letters. Loop has 4 letters. [2021-10-28 09:03:00,314 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:03:00,314 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 23 letters. Loop has 4 letters. [2021-10-28 09:03:00,316 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:03:00,316 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 19 letters. Loop has 8 letters. [2021-10-28 09:03:00,316 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:03:00,316 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 142 states and 176 transitions. [2021-10-28 09:03:00,318 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 31 [2021-10-28 09:03:00,319 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 142 states to 98 states and 123 transitions. [2021-10-28 09:03:00,319 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2021-10-28 09:03:00,320 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 37 [2021-10-28 09:03:00,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 98 states and 123 transitions. [2021-10-28 09:03:00,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:03:00,320 INFO L681 BuchiCegarLoop]: Abstraction has 98 states and 123 transitions. [2021-10-28 09:03:00,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states and 123 transitions. [2021-10-28 09:03:00,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 79. [2021-10-28 09:03:00,333 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 09:03:00,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 101 transitions. [2021-10-28 09:03:00,334 INFO L704 BuchiCegarLoop]: Abstraction has 79 states and 101 transitions. [2021-10-28 09:03:00,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:03:00,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:03:00,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:03:00,335 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 09:03:00,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:03:00,361 INFO L93 Difference]: Finished difference Result 129 states and 157 transitions. [2021-10-28 09:03:00,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:03:00,362 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 129 states and 157 transitions. [2021-10-28 09:03:00,364 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 35 [2021-10-28 09:03:00,365 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 129 states to 125 states and 153 transitions. [2021-10-28 09:03:00,365 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2021-10-28 09:03:00,365 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2021-10-28 09:03:00,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 125 states and 153 transitions. [2021-10-28 09:03:00,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:03:00,366 INFO L681 BuchiCegarLoop]: Abstraction has 125 states and 153 transitions. [2021-10-28 09:03:00,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states and 153 transitions. [2021-10-28 09:03:00,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 91. [2021-10-28 09:03:00,371 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 09:03:00,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 113 transitions. [2021-10-28 09:03:00,372 INFO L704 BuchiCegarLoop]: Abstraction has 91 states and 113 transitions. [2021-10-28 09:03:00,372 INFO L587 BuchiCegarLoop]: Abstraction has 91 states and 113 transitions. [2021-10-28 09:03:00,372 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-10-28 09:03:00,372 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 91 states and 113 transitions. [2021-10-28 09:03:00,374 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 25 [2021-10-28 09:03:00,374 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:03:00,374 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:03:00,376 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [6, 4, 4, 3, 2, 2, 1, 1] [2021-10-28 09:03:00,376 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [5, 4, 4, 3, 2, 1, 1] [2021-10-28 09:03:00,376 INFO L791 eck$LassoCheckResult]: Stem: 2465#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 2466#L18-1 assume !!(main_~i~0 > 0); 2519#L12 assume 1 == main_~i~0;main_~up~0 := 1; 2520#L12-2 assume !(10 == main_~i~0); 2536#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2467#L18-1 assume !!(main_~i~0 > 0); 2468#L12 assume !(1 == main_~i~0); 2546#L12-2 assume !(10 == main_~i~0); 2545#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2544#L18-1 assume !!(main_~i~0 > 0); 2498#L12 assume !(1 == main_~i~0); 2543#L12-2 assume !(10 == main_~i~0); 2500#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2497#L18-1 assume !!(main_~i~0 > 0); 2495#L12 assume !(1 == main_~i~0); 2493#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 2471#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2472#L18-1 assume !!(main_~i~0 > 0); 2517#L12 assume !(1 == main_~i~0); 2509#L12-2 assume !(10 == main_~i~0); 2515#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2514#L18-1 assume !!(main_~i~0 > 0); 2508#L12 assume 1 == main_~i~0;main_~up~0 := 1; 2505#L12-2 [2021-10-28 09:03:00,376 INFO L793 eck$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 09:03:00,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:00,377 INFO L85 PathProgramCache]: Analyzing trace with hash 2134050740, now seen corresponding path program 3 times [2021-10-28 09:03:00,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:00,377 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821814515] [2021-10-28 09:03:00,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:00,377 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:00,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:00,418 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 09:03:00,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:00,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821814515] [2021-10-28 09:03:00,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821814515] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:00,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456680310] [2021-10-28 09:03:00,419 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:03:00,420 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:00,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:00,421 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:03:00,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2021-10-28 09:03:00,491 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-28 09:03:00,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:03:00,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:03:00,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:00,575 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 09:03:00,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456680310] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:00,575 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:03:00,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 9 [2021-10-28 09:03:00,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474012053] [2021-10-28 09:03:00,580 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:03:00,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:00,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1620775762, now seen corresponding path program 1 times [2021-10-28 09:03:00,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:00,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482398959] [2021-10-28 09:03:00,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:00,581 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:00,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:00,631 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 09:03:00,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:00,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482398959] [2021-10-28 09:03:00,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482398959] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:00,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848869812] [2021-10-28 09:03:00,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:00,632 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:00,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:00,633 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:03:00,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2021-10-28 09:03:00,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:00,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:03:00,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:00,762 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 09:03:00,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848869812] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:00,762 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:03:00,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-10-28 09:03:00,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394910548] [2021-10-28 09:03:00,764 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:03:00,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:03:00,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:03:00,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:03:00,764 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 09:03:00,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:03:00,795 INFO L93 Difference]: Finished difference Result 116 states and 144 transitions. [2021-10-28 09:03:00,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:03:00,796 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 116 states and 144 transitions. [2021-10-28 09:03:00,797 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 31 [2021-10-28 09:03:00,798 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 116 states to 116 states and 144 transitions. [2021-10-28 09:03:00,799 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2021-10-28 09:03:00,799 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2021-10-28 09:03:00,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 116 states and 144 transitions. [2021-10-28 09:03:00,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:03:00,799 INFO L681 BuchiCegarLoop]: Abstraction has 116 states and 144 transitions. [2021-10-28 09:03:00,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states and 144 transitions. [2021-10-28 09:03:00,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 103. [2021-10-28 09:03:00,802 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 09:03:00,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 127 transitions. [2021-10-28 09:03:00,802 INFO L704 BuchiCegarLoop]: Abstraction has 103 states and 127 transitions. [2021-10-28 09:03:00,803 INFO L587 BuchiCegarLoop]: Abstraction has 103 states and 127 transitions. [2021-10-28 09:03:00,803 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-10-28 09:03:00,803 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 103 states and 127 transitions. [2021-10-28 09:03:00,804 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 29 [2021-10-28 09:03:00,804 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:03:00,804 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:03:00,805 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [7, 5, 5, 3, 3, 2, 1, 1] [2021-10-28 09:03:00,805 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [6, 5, 5, 3, 3, 1, 1] [2021-10-28 09:03:00,805 INFO L791 eck$LassoCheckResult]: Stem: 2810#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 2811#L18-1 assume !!(main_~i~0 > 0); 2846#L12 assume 1 == main_~i~0;main_~up~0 := 1; 2843#L12-2 assume !(10 == main_~i~0); 2840#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2838#L18-1 assume !!(main_~i~0 > 0); 2836#L12 assume !(1 == main_~i~0); 2835#L12-2 assume !(10 == main_~i~0); 2834#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2833#L18-1 assume !!(main_~i~0 > 0); 2830#L12 assume !(1 == main_~i~0); 2832#L12-2 assume !(10 == main_~i~0); 2831#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2829#L18-1 assume !!(main_~i~0 > 0); 2828#L12 assume !(1 == main_~i~0); 2827#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 2816#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2817#L18-1 assume !!(main_~i~0 > 0); 2905#L12 assume !(1 == main_~i~0); 2904#L12-2 assume !(10 == main_~i~0); 2903#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2902#L18-1 assume !!(main_~i~0 > 0); 2901#L12 assume !(1 == main_~i~0); 2886#L12-2 assume !(10 == main_~i~0); 2893#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2889#L18-1 assume !!(main_~i~0 > 0); 2885#L12 assume 1 == main_~i~0;main_~up~0 := 1; 2805#L12-2 [2021-10-28 09:03:00,806 INFO L793 eck$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 09:03:00,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:00,806 INFO L85 PathProgramCache]: Analyzing trace with hash 442904351, now seen corresponding path program 4 times [2021-10-28 09:03:00,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:00,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155823020] [2021-10-28 09:03:00,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:00,807 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:00,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:00,840 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 09:03:00,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:00,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155823020] [2021-10-28 09:03:00,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155823020] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:00,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795781301] [2021-10-28 09:03:00,841 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 09:03:00,841 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:00,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:00,842 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:03:00,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2021-10-28 09:03:00,933 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 09:03:00,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:03:00,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:03:00,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:00,995 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 09:03:00,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795781301] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:00,995 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:03:00,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-28 09:03:00,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228772968] [2021-10-28 09:03:00,996 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:03:00,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:00,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1417462851, now seen corresponding path program 2 times [2021-10-28 09:03:00,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:00,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023324169] [2021-10-28 09:03:00,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:00,997 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:01,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:01,029 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 09:03:01,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:01,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023324169] [2021-10-28 09:03:01,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023324169] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:01,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487619622] [2021-10-28 09:03:01,030 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:03:01,030 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:01,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:01,044 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:03:01,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2021-10-28 09:03:01,156 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:03:01,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:03:01,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:03:01,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:01,229 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 09:03:01,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487619622] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:01,229 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:03:01,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-10-28 09:03:01,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712444027] [2021-10-28 09:03:01,231 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:03:01,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:03:01,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:03:01,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:03:01,232 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 09:03:01,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:03:01,271 INFO L93 Difference]: Finished difference Result 132 states and 163 transitions. [2021-10-28 09:03:01,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:03:01,272 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 132 states and 163 transitions. [2021-10-28 09:03:01,274 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 35 [2021-10-28 09:03:01,275 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 132 states to 132 states and 163 transitions. [2021-10-28 09:03:01,275 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 45 [2021-10-28 09:03:01,275 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 45 [2021-10-28 09:03:01,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 132 states and 163 transitions. [2021-10-28 09:03:01,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:03:01,276 INFO L681 BuchiCegarLoop]: Abstraction has 132 states and 163 transitions. [2021-10-28 09:03:01,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states and 163 transitions. [2021-10-28 09:03:01,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 115. [2021-10-28 09:03:01,278 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 09:03:01,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 141 transitions. [2021-10-28 09:03:01,279 INFO L704 BuchiCegarLoop]: Abstraction has 115 states and 141 transitions. [2021-10-28 09:03:01,279 INFO L587 BuchiCegarLoop]: Abstraction has 115 states and 141 transitions. [2021-10-28 09:03:01,279 INFO L425 BuchiCegarLoop]: ======== Iteration 12============ [2021-10-28 09:03:01,279 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 115 states and 141 transitions. [2021-10-28 09:03:01,280 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 33 [2021-10-28 09:03:01,280 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:03:01,281 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:03:01,283 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [8, 6, 6, 4, 3, 2, 1, 1] [2021-10-28 09:03:01,283 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [7, 6, 6, 4, 3, 1, 1] [2021-10-28 09:03:01,284 INFO L791 eck$LassoCheckResult]: Stem: 3208#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 3209#L18-1 assume !!(main_~i~0 > 0); 3252#L12 assume 1 == main_~i~0;main_~up~0 := 1; 3249#L12-2 assume !(10 == main_~i~0); 3247#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3245#L18-1 assume !!(main_~i~0 > 0); 3244#L12 assume !(1 == main_~i~0); 3243#L12-2 assume !(10 == main_~i~0); 3242#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3239#L18-1 assume !!(main_~i~0 > 0); 3229#L12 assume !(1 == main_~i~0); 3232#L12-2 assume !(10 == main_~i~0); 3230#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3228#L18-1 assume !!(main_~i~0 > 0); 3226#L12 assume !(1 == main_~i~0); 3223#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 3210#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3211#L18-1 assume !!(main_~i~0 > 0); 3269#L12 assume !(1 == main_~i~0); 3268#L12-2 assume !(10 == main_~i~0); 3267#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3266#L18-1 assume !!(main_~i~0 > 0); 3265#L12 assume !(1 == main_~i~0); 3264#L12-2 assume !(10 == main_~i~0); 3263#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3262#L18-1 assume !!(main_~i~0 > 0); 3261#L12 assume !(1 == main_~i~0); 3234#L12-2 assume !(10 == main_~i~0); 3240#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3237#L18-1 assume !!(main_~i~0 > 0); 3233#L12 assume 1 == main_~i~0;main_~up~0 := 1; 3231#L12-2 [2021-10-28 09:03:01,287 INFO L793 eck$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 09:03:01,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:01,287 INFO L85 PathProgramCache]: Analyzing trace with hash 261204234, now seen corresponding path program 5 times [2021-10-28 09:03:01,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:01,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850700588] [2021-10-28 09:03:01,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:01,288 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:01,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:01,329 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 09:03:01,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:01,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850700588] [2021-10-28 09:03:01,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850700588] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:01,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535082445] [2021-10-28 09:03:01,330 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 09:03:01,330 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:01,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:01,331 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:03:01,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2021-10-28 09:03:01,423 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-28 09:03:01,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:03:01,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:03:01,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:01,494 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 09:03:01,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535082445] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:01,495 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:03:01,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-28 09:03:01,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323245364] [2021-10-28 09:03:01,497 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:03:01,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:01,497 INFO L85 PathProgramCache]: Analyzing trace with hash 2080061096, now seen corresponding path program 3 times [2021-10-28 09:03:01,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:01,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561082218] [2021-10-28 09:03:01,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:01,498 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:01,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:01,550 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 09:03:01,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:01,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561082218] [2021-10-28 09:03:01,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561082218] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:01,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112200456] [2021-10-28 09:03:01,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:03:01,551 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:01,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:01,556 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:03:01,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2021-10-28 09:03:01,672 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-28 09:03:01,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:03:01,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 09:03:01,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:01,741 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 09:03:01,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112200456] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:01,742 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:03:01,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-28 09:03:01,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190597013] [2021-10-28 09:03:01,743 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:03:01,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:03:01,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:03:01,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:03:01,744 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 09:03:01,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:03:01,774 INFO L93 Difference]: Finished difference Result 148 states and 182 transitions. [2021-10-28 09:03:01,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:03:01,774 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 148 states and 182 transitions. [2021-10-28 09:03:01,776 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 39 [2021-10-28 09:03:01,777 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 148 states to 148 states and 182 transitions. [2021-10-28 09:03:01,777 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 49 [2021-10-28 09:03:01,777 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 49 [2021-10-28 09:03:01,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 148 states and 182 transitions. [2021-10-28 09:03:01,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:03:01,778 INFO L681 BuchiCegarLoop]: Abstraction has 148 states and 182 transitions. [2021-10-28 09:03:01,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states and 182 transitions. [2021-10-28 09:03:01,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 127. [2021-10-28 09:03:01,781 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 09:03:01,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 155 transitions. [2021-10-28 09:03:01,782 INFO L704 BuchiCegarLoop]: Abstraction has 127 states and 155 transitions. [2021-10-28 09:03:01,782 INFO L587 BuchiCegarLoop]: Abstraction has 127 states and 155 transitions. [2021-10-28 09:03:01,782 INFO L425 BuchiCegarLoop]: ======== Iteration 13============ [2021-10-28 09:03:01,782 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 127 states and 155 transitions. [2021-10-28 09:03:01,783 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 37 [2021-10-28 09:03:01,783 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:03:01,783 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:03:01,784 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [9, 7, 7, 5, 3, 2, 1, 1] [2021-10-28 09:03:01,784 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [8, 7, 7, 5, 3, 1, 1] [2021-10-28 09:03:01,785 INFO L791 eck$LassoCheckResult]: Stem: 3656#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 3657#L18-1 assume !!(main_~i~0 > 0); 3700#L12 assume 1 == main_~i~0;main_~up~0 := 1; 3697#L12-2 assume !(10 == main_~i~0); 3695#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3693#L18-1 assume !!(main_~i~0 > 0); 3692#L12 assume !(1 == main_~i~0); 3691#L12-2 assume !(10 == main_~i~0); 3690#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3687#L18-1 assume !!(main_~i~0 > 0); 3677#L12 assume !(1 == main_~i~0); 3680#L12-2 assume !(10 == main_~i~0); 3678#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3676#L18-1 assume !!(main_~i~0 > 0); 3674#L12 assume !(1 == main_~i~0); 3671#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 3658#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3659#L18-1 assume !!(main_~i~0 > 0); 3721#L12 assume !(1 == main_~i~0); 3720#L12-2 assume !(10 == main_~i~0); 3719#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3718#L18-1 assume !!(main_~i~0 > 0); 3717#L12 assume !(1 == main_~i~0); 3716#L12-2 assume !(10 == main_~i~0); 3715#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3714#L18-1 assume !!(main_~i~0 > 0); 3713#L12 assume !(1 == main_~i~0); 3712#L12-2 assume !(10 == main_~i~0); 3711#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3710#L18-1 assume !!(main_~i~0 > 0); 3709#L12 assume !(1 == main_~i~0); 3682#L12-2 assume !(10 == main_~i~0); 3688#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3685#L18-1 assume !!(main_~i~0 > 0); 3681#L12 assume 1 == main_~i~0;main_~up~0 := 1; 3679#L12-2 [2021-10-28 09:03:01,785 INFO L793 eck$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 09:03:01,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:01,785 INFO L85 PathProgramCache]: Analyzing trace with hash 759706997, now seen corresponding path program 6 times [2021-10-28 09:03:01,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:01,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357508138] [2021-10-28 09:03:01,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:01,786 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:01,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:01,819 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 09:03:01,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:01,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357508138] [2021-10-28 09:03:01,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357508138] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:01,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181709045] [2021-10-28 09:03:01,820 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-28 09:03:01,820 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:01,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:01,825 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:03:01,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2021-10-28 09:03:01,934 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-10-28 09:03:01,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:03:01,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:03:01,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:02,057 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 09:03:02,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181709045] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:02,058 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:03:02,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2021-10-28 09:03:02,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798424340] [2021-10-28 09:03:02,059 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:03:02,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:02,059 INFO L85 PathProgramCache]: Analyzing trace with hash 148227091, now seen corresponding path program 4 times [2021-10-28 09:03:02,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:02,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263556682] [2021-10-28 09:03:02,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:02,060 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:02,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:02,106 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 09:03:02,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:02,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263556682] [2021-10-28 09:03:02,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263556682] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:02,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390497094] [2021-10-28 09:03:02,107 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 09:03:02,108 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:02,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:02,109 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:03:02,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2021-10-28 09:03:02,248 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 09:03:02,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:03:02,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:03:02,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:02,339 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 09:03:02,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390497094] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:02,340 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:03:02,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-10-28 09:03:02,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414768930] [2021-10-28 09:03:02,341 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:03:02,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:03:02,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:03:02,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:03:02,341 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 09:03:02,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:03:02,387 INFO L93 Difference]: Finished difference Result 164 states and 201 transitions. [2021-10-28 09:03:02,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:03:02,387 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 164 states and 201 transitions. [2021-10-28 09:03:02,389 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 43 [2021-10-28 09:03:02,390 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 164 states to 164 states and 201 transitions. [2021-10-28 09:03:02,390 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 53 [2021-10-28 09:03:02,391 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53 [2021-10-28 09:03:02,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 164 states and 201 transitions. [2021-10-28 09:03:02,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:03:02,391 INFO L681 BuchiCegarLoop]: Abstraction has 164 states and 201 transitions. [2021-10-28 09:03:02,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states and 201 transitions. [2021-10-28 09:03:02,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 139. [2021-10-28 09:03:02,394 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 09:03:02,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 169 transitions. [2021-10-28 09:03:02,395 INFO L704 BuchiCegarLoop]: Abstraction has 139 states and 169 transitions. [2021-10-28 09:03:02,395 INFO L587 BuchiCegarLoop]: Abstraction has 139 states and 169 transitions. [2021-10-28 09:03:02,395 INFO L425 BuchiCegarLoop]: ======== Iteration 14============ [2021-10-28 09:03:02,395 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 139 states and 169 transitions. [2021-10-28 09:03:02,396 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 41 [2021-10-28 09:03:02,396 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:03:02,396 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:03:02,397 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [10, 8, 8, 6, 3, 2, 1, 1] [2021-10-28 09:03:02,397 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [9, 8, 8, 6, 3, 1, 1] [2021-10-28 09:03:02,398 INFO L791 eck$LassoCheckResult]: Stem: 4163#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 4164#L18-1 assume !!(main_~i~0 > 0); 4207#L12 assume 1 == main_~i~0;main_~up~0 := 1; 4204#L12-2 assume !(10 == main_~i~0); 4202#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4200#L18-1 assume !!(main_~i~0 > 0); 4199#L12 assume !(1 == main_~i~0); 4198#L12-2 assume !(10 == main_~i~0); 4197#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4194#L18-1 assume !!(main_~i~0 > 0); 4184#L12 assume !(1 == main_~i~0); 4187#L12-2 assume !(10 == main_~i~0); 4185#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4183#L18-1 assume !!(main_~i~0 > 0); 4181#L12 assume !(1 == main_~i~0); 4178#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 4165#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4166#L18-1 assume !!(main_~i~0 > 0); 4279#L12 assume !(1 == main_~i~0); 4278#L12-2 assume !(10 == main_~i~0); 4277#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4276#L18-1 assume !!(main_~i~0 > 0); 4275#L12 assume !(1 == main_~i~0); 4274#L12-2 assume !(10 == main_~i~0); 4259#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4256#L18-1 assume !!(main_~i~0 > 0); 4253#L12 assume !(1 == main_~i~0); 4251#L12-2 assume !(10 == main_~i~0); 4248#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4245#L18-1 assume !!(main_~i~0 > 0); 4242#L12 assume !(1 == main_~i~0); 4240#L12-2 assume !(10 == main_~i~0); 4238#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4235#L18-1 assume !!(main_~i~0 > 0); 4232#L12 assume !(1 == main_~i~0); 4191#L12-2 assume !(10 == main_~i~0); 4196#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4193#L18-1 assume !!(main_~i~0 > 0); 4190#L12 assume 1 == main_~i~0;main_~up~0 := 1; 4186#L12-2 [2021-10-28 09:03:02,398 INFO L793 eck$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 09:03:02,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:02,398 INFO L85 PathProgramCache]: Analyzing trace with hash 985437280, now seen corresponding path program 7 times [2021-10-28 09:03:02,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:02,399 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430236867] [2021-10-28 09:03:02,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:02,399 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:02,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:02,432 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 09:03:02,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:02,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430236867] [2021-10-28 09:03:02,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430236867] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:02,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407883558] [2021-10-28 09:03:02,433 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-28 09:03:02,433 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:02,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:02,440 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:03:02,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2021-10-28 09:03:02,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:02,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:03:02,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:02,668 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 09:03:02,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407883558] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:02,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:03:02,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-28 09:03:02,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531599622] [2021-10-28 09:03:02,670 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:03:02,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:02,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1636148222, now seen corresponding path program 5 times [2021-10-28 09:03:02,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:02,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378202248] [2021-10-28 09:03:02,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:02,671 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:02,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:02,724 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 09:03:02,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:02,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378202248] [2021-10-28 09:03:02,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378202248] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:02,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256456067] [2021-10-28 09:03:02,725 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 09:03:02,725 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:02,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:02,729 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:03:02,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2021-10-28 09:03:02,876 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-10-28 09:03:02,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:03:02,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 09:03:02,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:03,005 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 09:03:03,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256456067] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:03,005 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:03:03,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-10-28 09:03:03,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510178741] [2021-10-28 09:03:03,006 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:03:03,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:03:03,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:03:03,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:03:03,007 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 09:03:03,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:03:03,063 INFO L93 Difference]: Finished difference Result 180 states and 220 transitions. [2021-10-28 09:03:03,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:03:03,064 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 180 states and 220 transitions. [2021-10-28 09:03:03,065 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 47 [2021-10-28 09:03:03,067 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 180 states to 180 states and 220 transitions. [2021-10-28 09:03:03,067 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 57 [2021-10-28 09:03:03,068 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2021-10-28 09:03:03,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 180 states and 220 transitions. [2021-10-28 09:03:03,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:03:03,068 INFO L681 BuchiCegarLoop]: Abstraction has 180 states and 220 transitions. [2021-10-28 09:03:03,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states and 220 transitions. [2021-10-28 09:03:03,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 151. [2021-10-28 09:03:03,072 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 09:03:03,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 183 transitions. [2021-10-28 09:03:03,073 INFO L704 BuchiCegarLoop]: Abstraction has 151 states and 183 transitions. [2021-10-28 09:03:03,073 INFO L587 BuchiCegarLoop]: Abstraction has 151 states and 183 transitions. [2021-10-28 09:03:03,073 INFO L425 BuchiCegarLoop]: ======== Iteration 15============ [2021-10-28 09:03:03,073 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 151 states and 183 transitions. [2021-10-28 09:03:03,074 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 45 [2021-10-28 09:03:03,075 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:03:03,075 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:03:03,076 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [11, 9, 9, 7, 3, 2, 1, 1] [2021-10-28 09:03:03,076 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [10, 9, 9, 7, 3, 1, 1] [2021-10-28 09:03:03,076 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 09:03:03,076 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 09:03:03,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:03,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1480489525, now seen corresponding path program 8 times [2021-10-28 09:03:03,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:03,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395857690] [2021-10-28 09:03:03,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:03,078 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:03,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:03,115 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 09:03:03,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:03,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395857690] [2021-10-28 09:03:03,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395857690] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:03,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650472785] [2021-10-28 09:03:03,116 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:03:03,116 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:03,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:03,121 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:03:03,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2021-10-28 09:03:03,295 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:03:03,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:03:03,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:03:03,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:03,402 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 09:03:03,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650472785] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:03,402 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:03:03,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-28 09:03:03,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932457564] [2021-10-28 09:03:03,403 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:03:03,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:03,403 INFO L85 PathProgramCache]: Analyzing trace with hash 505255529, now seen corresponding path program 6 times [2021-10-28 09:03:03,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:03,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417875001] [2021-10-28 09:03:03,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:03,404 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:03,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:03,478 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 09:03:03,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:03,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417875001] [2021-10-28 09:03:03,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417875001] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:03,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046587150] [2021-10-28 09:03:03,479 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-28 09:03:03,479 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:03,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:03,485 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:03:03,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2021-10-28 09:03:03,654 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-10-28 09:03:03,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:03:03,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 09:03:03,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:03,761 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 09:03:03,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046587150] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:03,761 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:03:03,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-10-28 09:03:03,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920266029] [2021-10-28 09:03:03,762 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:03:03,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:03:03,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:03:03,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:03:03,763 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 09:03:03,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:03:03,823 INFO L93 Difference]: Finished difference Result 196 states and 239 transitions. [2021-10-28 09:03:03,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:03:03,824 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 196 states and 239 transitions. [2021-10-28 09:03:03,825 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 51 [2021-10-28 09:03:03,827 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 196 states to 196 states and 239 transitions. [2021-10-28 09:03:03,827 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 61 [2021-10-28 09:03:03,827 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 61 [2021-10-28 09:03:03,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 196 states and 239 transitions. [2021-10-28 09:03:03,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:03:03,828 INFO L681 BuchiCegarLoop]: Abstraction has 196 states and 239 transitions. [2021-10-28 09:03:03,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states and 239 transitions. [2021-10-28 09:03:03,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 163. [2021-10-28 09:03:03,831 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 09:03:03,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 197 transitions. [2021-10-28 09:03:03,832 INFO L704 BuchiCegarLoop]: Abstraction has 163 states and 197 transitions. [2021-10-28 09:03:03,832 INFO L587 BuchiCegarLoop]: Abstraction has 163 states and 197 transitions. [2021-10-28 09:03:03,832 INFO L425 BuchiCegarLoop]: ======== Iteration 16============ [2021-10-28 09:03:03,832 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 163 states and 197 transitions. [2021-10-28 09:03:03,833 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 49 [2021-10-28 09:03:03,833 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:03:03,834 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:03:03,836 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [12, 10, 10, 8, 3, 2, 1, 1] [2021-10-28 09:03:03,836 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [11, 10, 10, 8, 3, 1, 1] [2021-10-28 09:03:03,837 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 09:03:03,837 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 09:03:03,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:03,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1019857334, now seen corresponding path program 9 times [2021-10-28 09:03:03,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:03,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831186275] [2021-10-28 09:03:03,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:03,838 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:03,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:03,885 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 09:03:03,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:03,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831186275] [2021-10-28 09:03:03,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831186275] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:03,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950879948] [2021-10-28 09:03:03,886 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:03:03,886 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:03,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:03,888 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:03:03,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2021-10-28 09:03:04,069 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-10-28 09:03:04,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:03:04,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 09:03:04,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:04,247 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 09:03:04,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950879948] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:04,247 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:03:04,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10] total 15 [2021-10-28 09:03:04,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788305527] [2021-10-28 09:03:04,248 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:03:04,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:04,249 INFO L85 PathProgramCache]: Analyzing trace with hash 256924500, now seen corresponding path program 7 times [2021-10-28 09:03:04,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:04,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021899299] [2021-10-28 09:03:04,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:04,249 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:04,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:04,341 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 09:03:04,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:04,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021899299] [2021-10-28 09:03:04,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021899299] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:04,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725948114] [2021-10-28 09:03:04,342 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-28 09:03:04,342 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:04,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:04,344 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:03:04,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2021-10-28 09:03:04,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:04,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 09:03:04,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:04,633 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 09:03:04,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725948114] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:04,633 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:03:04,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-10-28 09:03:04,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106956379] [2021-10-28 09:03:04,633 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:03:04,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:03:04,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 09:03:04,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:03:04,634 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 09:03:04,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:03:04,709 INFO L93 Difference]: Finished difference Result 212 states and 258 transitions. [2021-10-28 09:03:04,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:03:04,709 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 212 states and 258 transitions. [2021-10-28 09:03:04,713 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 55 [2021-10-28 09:03:04,715 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 212 states to 212 states and 258 transitions. [2021-10-28 09:03:04,715 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 65 [2021-10-28 09:03:04,716 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 65 [2021-10-28 09:03:04,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 212 states and 258 transitions. [2021-10-28 09:03:04,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:03:04,716 INFO L681 BuchiCegarLoop]: Abstraction has 212 states and 258 transitions. [2021-10-28 09:03:04,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states and 258 transitions. [2021-10-28 09:03:04,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 175. [2021-10-28 09:03:04,720 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 09:03:04,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 211 transitions. [2021-10-28 09:03:04,721 INFO L704 BuchiCegarLoop]: Abstraction has 175 states and 211 transitions. [2021-10-28 09:03:04,721 INFO L587 BuchiCegarLoop]: Abstraction has 175 states and 211 transitions. [2021-10-28 09:03:04,722 INFO L425 BuchiCegarLoop]: ======== Iteration 17============ [2021-10-28 09:03:04,722 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 175 states and 211 transitions. [2021-10-28 09:03:04,723 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 53 [2021-10-28 09:03:04,723 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:03:04,723 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:03:04,724 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [13, 11, 11, 9, 3, 2, 1, 1] [2021-10-28 09:03:04,724 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [12, 11, 11, 9, 3, 1, 1] [2021-10-28 09:03:04,724 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 09:03:04,725 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 09:03:04,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:04,725 INFO L85 PathProgramCache]: Analyzing trace with hash -890757087, now seen corresponding path program 10 times [2021-10-28 09:03:04,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:04,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265297523] [2021-10-28 09:03:04,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:04,726 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:04,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:04,782 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 09:03:04,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:04,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265297523] [2021-10-28 09:03:04,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265297523] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:04,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255353540] [2021-10-28 09:03:04,783 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 09:03:04,783 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:04,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:04,785 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:03:04,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2021-10-28 09:03:04,977 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 09:03:04,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:03:04,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:03:04,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:05,093 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 09:03:05,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255353540] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:05,093 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:03:05,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-28 09:03:05,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525611773] [2021-10-28 09:03:05,094 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:03:05,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:05,095 INFO L85 PathProgramCache]: Analyzing trace with hash -294604097, now seen corresponding path program 8 times [2021-10-28 09:03:05,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:05,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112044779] [2021-10-28 09:03:05,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:05,095 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:05,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:03:05,103 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:03:05,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:03:05,111 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:03:05,285 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:03:05,285 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:03:05,285 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:03:05,285 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:03:05,285 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:03:05,285 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:03:05,285 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:03:05,285 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:03:05,285 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration17_Loop [2021-10-28 09:03:05,285 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:03:05,285 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:03:05,286 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 09:03:05,290 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 09:03:05,299 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 09:03:05,301 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 09:03:05,335 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:03:05,335 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:03:05,336 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:03:05,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:05,337 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:03:05,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Waiting until timeout for monitored process [2021-10-28 09:03:05,338 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:03:05,338 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:03:05,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:05,369 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:03:05,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:05,370 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:03:05,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Waiting until timeout for monitored process [2021-10-28 09:03:05,371 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:03:05,371 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:03:05,381 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:03:05,400 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Ended with exit code 0 [2021-10-28 09:03:05,400 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:03:05,400 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:03:05,400 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:03:05,400 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:03:05,400 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:03:05,400 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:03:05,401 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:03:05,401 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:03:05,401 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration17_Loop [2021-10-28 09:03:05,401 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:03:05,401 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:03:05,401 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 09:03:05,415 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 09:03:05,419 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 09:03:05,421 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 09:03:05,471 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:03:05,471 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:03:05,471 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:03:05,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:05,472 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:03:05,481 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 09:03:05,489 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:03:05,490 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:03:05,490 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:03:05,490 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:03:05,492 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:03:05,492 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:03:05,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Waiting until timeout for monitored process [2021-10-28 09:03:05,503 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:03:05,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:05,523 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:03:05,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:05,524 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:03:05,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (83)] Waiting until timeout for monitored process [2021-10-28 09:03:05,525 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 09:03:05,532 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:03:05,532 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:03:05,532 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:03:05,532 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:03:05,532 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:03:05,533 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:03:05,533 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:03:05,534 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:03:05,536 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-28 09:03:05,536 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 09:03:05,536 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:03:05,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:05,538 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:03:05,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (84)] Waiting until timeout for monitored process [2021-10-28 09:03:05,539 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:03:05,539 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:03:05,539 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:03:05,539 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 09:03:05,558 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (83)] Ended with exit code 0 [2021-10-28 09:03:05,559 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:03:05,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:05,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:05,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:03:05,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:05,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (84)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:05,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:05,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:03:05,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:05,946 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 09:03:05,947 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 09:03:05,947 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 09:03:06,092 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 09:03:06,093 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 09:03:06,093 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 09:03:06,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 47 transitions. [2021-10-28 09:03:06,093 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 47 transitions. Stem has 51 letters. Loop has 48 letters. [2021-10-28 09:03:06,094 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:03:06,094 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 47 transitions. Stem has 99 letters. Loop has 48 letters. [2021-10-28 09:03:06,094 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:03:06,094 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 47 transitions. Stem has 51 letters. Loop has 96 letters. [2021-10-28 09:03:06,095 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:03:06,095 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 689 states and 821 transitions. [2021-10-28 09:03:06,100 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 57 [2021-10-28 09:03:06,105 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 689 states to 536 states and 633 transitions. [2021-10-28 09:03:06,105 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 121 [2021-10-28 09:03:06,106 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 127 [2021-10-28 09:03:06,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 536 states and 633 transitions. [2021-10-28 09:03:06,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:03:06,106 INFO L681 BuchiCegarLoop]: Abstraction has 536 states and 633 transitions. [2021-10-28 09:03:06,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states and 633 transitions. [2021-10-28 09:03:06,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 405. [2021-10-28 09:03:06,115 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 09:03:06,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 484 transitions. [2021-10-28 09:03:06,117 INFO L704 BuchiCegarLoop]: Abstraction has 405 states and 484 transitions. [2021-10-28 09:03:06,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:03:06,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:03:06,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:03:06,118 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 09:03:06,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:03:06,148 INFO L93 Difference]: Finished difference Result 277 states and 322 transitions. [2021-10-28 09:03:06,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:03:06,148 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 277 states and 322 transitions. [2021-10-28 09:03:06,150 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 71 [2021-10-28 09:03:06,152 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 277 states to 249 states and 294 transitions. [2021-10-28 09:03:06,153 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 68 [2021-10-28 09:03:06,153 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 68 [2021-10-28 09:03:06,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 249 states and 294 transitions. [2021-10-28 09:03:06,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:03:06,153 INFO L681 BuchiCegarLoop]: Abstraction has 249 states and 294 transitions. [2021-10-28 09:03:06,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states and 294 transitions. [2021-10-28 09:03:06,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 187. [2021-10-28 09:03:06,157 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 09:03:06,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 223 transitions. [2021-10-28 09:03:06,159 INFO L704 BuchiCegarLoop]: Abstraction has 187 states and 223 transitions. [2021-10-28 09:03:06,159 INFO L587 BuchiCegarLoop]: Abstraction has 187 states and 223 transitions. [2021-10-28 09:03:06,159 INFO L425 BuchiCegarLoop]: ======== Iteration 18============ [2021-10-28 09:03:06,159 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 187 states and 223 transitions. [2021-10-28 09:03:06,160 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 57 [2021-10-28 09:03:06,160 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:03:06,160 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:03:06,161 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [14, 12, 12, 9, 4, 2, 1, 1] [2021-10-28 09:03:06,161 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [13, 12, 12, 9, 4, 1, 1] [2021-10-28 09:03:06,162 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 09:03:06,162 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 09:03:06,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:06,162 INFO L85 PathProgramCache]: Analyzing trace with hash 260754314, now seen corresponding path program 11 times [2021-10-28 09:03:06,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:06,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655734636] [2021-10-28 09:03:06,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:06,163 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:06,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:06,201 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 09:03:06,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:06,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655734636] [2021-10-28 09:03:06,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655734636] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:06,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755698799] [2021-10-28 09:03:06,202 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 09:03:06,202 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:06,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:06,203 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:03:06,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2021-10-28 09:03:06,478 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-10-28 09:03:06,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:03:06,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 09:03:06,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:06,592 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 09:03:06,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755698799] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:06,592 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:03:06,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-10-28 09:03:06,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029840151] [2021-10-28 09:03:06,595 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:03:06,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:06,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1093459752, now seen corresponding path program 9 times [2021-10-28 09:03:06,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:06,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536040451] [2021-10-28 09:03:06,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:06,596 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:06,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:03:06,604 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:03:06,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:03:06,612 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:03:06,808 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:03:06,808 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:03:06,808 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:03:06,808 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:03:06,808 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:03:06,808 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:03:06,808 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:03:06,808 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:03:06,809 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration18_Loop [2021-10-28 09:03:06,809 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:03:06,809 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:03:06,809 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 09:03:06,812 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 09:03:06,815 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 09:03:06,819 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 09:03:06,850 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:03:06,851 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:03:06,851 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:03:06,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:06,852 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:03:06,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (86)] Waiting until timeout for monitored process [2021-10-28 09:03:06,854 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:03:06,854 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:03:06,866 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:03:06,866 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 09:03:06,885 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (86)] Ended with exit code 0 [2021-10-28 09:03:06,885 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:03:06,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:06,886 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:03:06,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (87)] Waiting until timeout for monitored process [2021-10-28 09:03:06,887 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:03:06,888 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:03:06,895 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:03:06,895 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 09:03:06,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (87)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:06,915 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:03:06,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:06,915 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:03:06,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (88)] Waiting until timeout for monitored process [2021-10-28 09:03:06,931 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:03:06,931 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:03:06,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (88)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:06,963 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:03:06,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:06,963 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:03:06,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (89)] Waiting until timeout for monitored process [2021-10-28 09:03:06,965 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:03:06,965 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:03:06,974 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:03:06,993 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (89)] Ended with exit code 0 [2021-10-28 09:03:06,993 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:03:06,993 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:03:06,993 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:03:06,993 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:03:06,993 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:03:06,993 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:03:06,993 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:03:06,993 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:03:06,993 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration18_Loop [2021-10-28 09:03:06,993 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:03:06,993 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:03:06,994 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 09:03:06,999 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:03:07,002 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 09:03:07,010 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 09:03:07,043 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:03:07,043 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:03:07,043 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:03:07,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:07,044 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:03:07,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (90)] Waiting until timeout for monitored process [2021-10-28 09:03:07,046 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 09:03:07,053 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:03:07,053 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:03:07,053 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:03:07,053 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:03:07,055 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:03:07,055 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:03:07,070 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:03:07,089 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (90)] Ended with exit code 0 [2021-10-28 09:03:07,090 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:03:07,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:07,090 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:03:07,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (91)] Waiting until timeout for monitored process [2021-10-28 09:03:07,091 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 09:03:07,098 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:03:07,098 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:03:07,098 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:03:07,098 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:03:07,099 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:03:07,099 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:03:07,099 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:03:07,101 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:03:07,119 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (91)] Ended with exit code 0 [2021-10-28 09:03:07,120 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:03:07,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:07,121 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:03:07,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (92)] Waiting until timeout for monitored process [2021-10-28 09:03:07,122 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 09:03:07,128 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:03:07,129 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:03:07,129 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:03:07,129 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:03:07,129 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:03:07,129 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:03:07,129 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:03:07,156 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:03:07,166 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 09:03:07,166 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 09:03:07,166 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:03:07,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:07,170 INFO L229 MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:03:07,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (93)] Waiting until timeout for monitored process [2021-10-28 09:03:07,171 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:03:07,171 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:03:07,172 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:03:07,172 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 09:03:07,193 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (92)] Ended with exit code 0 [2021-10-28 09:03:07,194 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:03:07,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:07,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:07,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:03:07,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:07,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:07,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 09:03:07,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:07,551 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 09:03:07,552 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 09:03:07,552 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 09:03:07,749 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 09:03:07,750 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 09:03:07,750 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 09:03:07,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 57 transitions. [2021-10-28 09:03:07,751 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 57 transitions. Stem has 55 letters. Loop has 52 letters. [2021-10-28 09:03:07,751 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:03:07,751 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 57 transitions. Stem has 107 letters. Loop has 52 letters. [2021-10-28 09:03:07,752 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:03:07,752 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 57 transitions. Stem has 55 letters. Loop has 104 letters. [2021-10-28 09:03:07,753 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:03:07,753 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 905 states and 1062 transitions. [2021-10-28 09:03:07,760 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 61 [2021-10-28 09:03:07,765 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 905 states to 664 states and 777 transitions. [2021-10-28 09:03:07,765 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 142 [2021-10-28 09:03:07,765 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 149 [2021-10-28 09:03:07,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 664 states and 777 transitions. [2021-10-28 09:03:07,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:03:07,766 INFO L681 BuchiCegarLoop]: Abstraction has 664 states and 777 transitions. [2021-10-28 09:03:07,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states and 777 transitions. [2021-10-28 09:03:07,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 461. [2021-10-28 09:03:07,791 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 09:03:07,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 550 transitions. [2021-10-28 09:03:07,793 INFO L704 BuchiCegarLoop]: Abstraction has 461 states and 550 transitions. [2021-10-28 09:03:07,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:03:07,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:03:07,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:03:07,794 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 09:03:07,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:03:07,823 INFO L93 Difference]: Finished difference Result 317 states and 365 transitions. [2021-10-28 09:03:07,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:03:07,823 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 317 states and 365 transitions. [2021-10-28 09:03:07,825 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 79 [2021-10-28 09:03:07,828 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 317 states to 281 states and 329 transitions. [2021-10-28 09:03:07,828 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 72 [2021-10-28 09:03:07,828 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 72 [2021-10-28 09:03:07,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 281 states and 329 transitions. [2021-10-28 09:03:07,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:03:07,829 INFO L681 BuchiCegarLoop]: Abstraction has 281 states and 329 transitions. [2021-10-28 09:03:07,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states and 329 transitions. [2021-10-28 09:03:07,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 199. [2021-10-28 09:03:07,833 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 09:03:07,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 235 transitions. [2021-10-28 09:03:07,834 INFO L704 BuchiCegarLoop]: Abstraction has 199 states and 235 transitions. [2021-10-28 09:03:07,834 INFO L587 BuchiCegarLoop]: Abstraction has 199 states and 235 transitions. [2021-10-28 09:03:07,834 INFO L425 BuchiCegarLoop]: ======== Iteration 19============ [2021-10-28 09:03:07,834 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 199 states and 235 transitions. [2021-10-28 09:03:07,835 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 61 [2021-10-28 09:03:07,835 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:03:07,836 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:03:07,836 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [15, 13, 13, 9, 5, 2, 1, 1] [2021-10-28 09:03:07,837 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [14, 13, 13, 9, 5, 1, 1] [2021-10-28 09:03:07,837 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 09:03:07,837 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 09:03:07,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:07,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1566074253, now seen corresponding path program 12 times [2021-10-28 09:03:07,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:07,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241793268] [2021-10-28 09:03:07,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:07,838 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:07,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:07,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (93)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:07,898 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 09:03:07,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:07,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241793268] [2021-10-28 09:03:07,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241793268] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:07,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676432793] [2021-10-28 09:03:07,899 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-28 09:03:07,899 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:07,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:07,904 INFO L229 MonitoredProcess]: Starting monitored process 94 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:03:07,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2021-10-28 09:03:08,207 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2021-10-28 09:03:08,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:03:08,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:03:08,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:08,329 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 09:03:08,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676432793] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:08,329 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:03:08,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-10-28 09:03:08,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584539389] [2021-10-28 09:03:08,329 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:03:08,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:08,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1203416849, now seen corresponding path program 10 times [2021-10-28 09:03:08,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:08,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029768458] [2021-10-28 09:03:08,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:08,331 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:08,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:03:08,340 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:03:08,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:03:08,347 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:03:08,593 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:03:08,593 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:03:08,593 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:03:08,593 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:03:08,593 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:03:08,594 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:03:08,594 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:03:08,594 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:03:08,594 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration19_Loop [2021-10-28 09:03:08,594 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:03:08,594 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:03:08,594 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 09:03:08,599 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 09:03:08,601 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 09:03:08,606 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 09:03:08,643 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:03:08,643 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:03:08,643 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:03:08,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:08,644 INFO L229 MonitoredProcess]: Starting monitored process 95 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:03:08,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (95)] Waiting until timeout for monitored process [2021-10-28 09:03:08,645 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:03:08,645 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:03:08,653 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:03:08,653 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 09:03:08,673 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (95)] Ended with exit code 0 [2021-10-28 09:03:08,673 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:03:08,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:08,674 INFO L229 MonitoredProcess]: Starting monitored process 96 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:03:08,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (96)] Waiting until timeout for monitored process [2021-10-28 09:03:08,675 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:03:08,675 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:03:08,689 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:03:08,689 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 09:03:08,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (96)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:08,714 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:03:08,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:08,715 INFO L229 MonitoredProcess]: Starting monitored process 97 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:03:08,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (97)] Waiting until timeout for monitored process [2021-10-28 09:03:08,716 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:03:08,716 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:03:08,747 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (97)] Ended with exit code 0 [2021-10-28 09:03:08,748 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:03:08,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:08,748 INFO L229 MonitoredProcess]: Starting monitored process 98 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:03:08,750 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:03:08,750 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:03:08,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (98)] Waiting until timeout for monitored process [2021-10-28 09:03:08,759 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:03:08,778 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (98)] Ended with exit code 0 [2021-10-28 09:03:08,778 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:03:08,778 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:03:08,778 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:03:08,778 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:03:08,778 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:03:08,778 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:03:08,778 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:03:08,778 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:03:08,778 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration19_Loop [2021-10-28 09:03:08,778 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:03:08,778 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:03:08,779 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 09:03:08,782 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 09:03:08,786 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 09:03:08,788 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 09:03:08,820 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:03:08,820 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:03:08,821 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:03:08,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:08,821 INFO L229 MonitoredProcess]: Starting monitored process 99 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:03:08,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (99)] Waiting until timeout for monitored process [2021-10-28 09:03:08,822 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 09:03:08,829 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:03:08,829 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:03:08,829 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:03:08,829 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:03:08,830 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:03:08,830 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:03:08,830 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:03:08,832 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:03:08,850 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (99)] Ended with exit code 0 [2021-10-28 09:03:08,851 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:03:08,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:08,851 INFO L229 MonitoredProcess]: Starting monitored process 100 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:03:08,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (100)] Waiting until timeout for monitored process [2021-10-28 09:03:08,852 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 09:03:08,859 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:03:08,859 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:03:08,859 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:03:08,859 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:03:08,860 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:03:08,860 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:03:08,860 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:03:08,862 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:03:08,863 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 09:03:08,864 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 09:03:08,864 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:03:08,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:08,865 INFO L229 MonitoredProcess]: Starting monitored process 101 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:03:08,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (101)] Waiting until timeout for monitored process [2021-10-28 09:03:08,866 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:03:08,866 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:03:08,866 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:03:08,866 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 09:03:08,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (100)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:08,885 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:03:08,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:08,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:08,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:03:08,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:09,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:09,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 09:03:09,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:09,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (101)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:09,303 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 09:03:09,304 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 09:03:09,304 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 09:03:09,574 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 09:03:09,574 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 09:03:09,575 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 09:03:09,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 67 transitions. [2021-10-28 09:03:09,575 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 67 transitions. Stem has 59 letters. Loop has 56 letters. [2021-10-28 09:03:09,576 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:03:09,576 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 67 transitions. Stem has 115 letters. Loop has 56 letters. [2021-10-28 09:03:09,576 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:03:09,576 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 67 transitions. Stem has 59 letters. Loop has 112 letters. [2021-10-28 09:03:09,577 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:03:09,577 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1161 states and 1347 transitions. [2021-10-28 09:03:09,585 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 65 [2021-10-28 09:03:09,590 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1161 states to 812 states and 943 transitions. [2021-10-28 09:03:09,590 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 167 [2021-10-28 09:03:09,591 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 175 [2021-10-28 09:03:09,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 812 states and 943 transitions. [2021-10-28 09:03:09,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:03:09,591 INFO L681 BuchiCegarLoop]: Abstraction has 812 states and 943 transitions. [2021-10-28 09:03:09,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states and 943 transitions. [2021-10-28 09:03:09,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 525. [2021-10-28 09:03:09,602 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 09:03:09,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 626 transitions. [2021-10-28 09:03:09,604 INFO L704 BuchiCegarLoop]: Abstraction has 525 states and 626 transitions. [2021-10-28 09:03:09,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:03:09,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:03:09,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:03:09,605 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 09:03:09,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:03:09,635 INFO L93 Difference]: Finished difference Result 357 states and 408 transitions. [2021-10-28 09:03:09,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:03:09,636 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 357 states and 408 transitions. [2021-10-28 09:03:09,638 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 87 [2021-10-28 09:03:09,640 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 357 states to 313 states and 364 transitions. [2021-10-28 09:03:09,640 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 76 [2021-10-28 09:03:09,641 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 76 [2021-10-28 09:03:09,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 313 states and 364 transitions. [2021-10-28 09:03:09,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:03:09,641 INFO L681 BuchiCegarLoop]: Abstraction has 313 states and 364 transitions. [2021-10-28 09:03:09,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states and 364 transitions. [2021-10-28 09:03:09,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 211. [2021-10-28 09:03:09,646 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 09:03:09,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 247 transitions. [2021-10-28 09:03:09,646 INFO L704 BuchiCegarLoop]: Abstraction has 211 states and 247 transitions. [2021-10-28 09:03:09,647 INFO L587 BuchiCegarLoop]: Abstraction has 211 states and 247 transitions. [2021-10-28 09:03:09,647 INFO L425 BuchiCegarLoop]: ======== Iteration 20============ [2021-10-28 09:03:09,647 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 211 states and 247 transitions. [2021-10-28 09:03:09,648 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 65 [2021-10-28 09:03:09,648 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:03:09,648 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:03:09,649 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [16, 14, 14, 9, 6, 2, 1, 1] [2021-10-28 09:03:09,649 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [15, 14, 14, 9, 6, 1, 1] [2021-10-28 09:03:09,650 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 09:03:09,650 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 09:03:09,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:09,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1417622308, now seen corresponding path program 13 times [2021-10-28 09:03:09,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:09,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050078170] [2021-10-28 09:03:09,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:09,651 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:09,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:09,703 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 09:03:09,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:09,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050078170] [2021-10-28 09:03:09,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050078170] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:09,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258496981] [2021-10-28 09:03:09,704 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-28 09:03:09,705 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:09,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:09,706 INFO L229 MonitoredProcess]: Starting monitored process 102 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:03:09,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2021-10-28 09:03:10,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:10,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 09:03:10,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:10,181 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 09:03:10,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258496981] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:10,182 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:03:10,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-10-28 09:03:10,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579245730] [2021-10-28 09:03:10,183 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:03:10,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:10,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1315151238, now seen corresponding path program 11 times [2021-10-28 09:03:10,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:10,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340240688] [2021-10-28 09:03:10,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:10,184 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:10,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:03:10,194 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:03:10,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:03:10,206 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:03:10,485 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:03:10,485 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:03:10,485 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:03:10,485 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:03:10,485 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:03:10,485 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:03:10,485 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:03:10,485 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:03:10,486 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration20_Loop [2021-10-28 09:03:10,486 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:03:10,486 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:03:10,486 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 09:03:10,489 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 09:03:10,493 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 09:03:10,496 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 09:03:10,537 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:03:10,537 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:03:10,538 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:03:10,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:10,540 INFO L229 MonitoredProcess]: Starting monitored process 103 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:03:10,545 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:03:10,545 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:03:10,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (103)] Waiting until timeout for monitored process [2021-10-28 09:03:10,564 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:03:10,564 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 09:03:10,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (103)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:10,595 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:03:10,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:10,598 INFO L229 MonitoredProcess]: Starting monitored process 104 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:03:10,600 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:03:10,600 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:03:10,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (104)] Waiting until timeout for monitored process [2021-10-28 09:03:10,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (104)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:10,652 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:03:10,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:10,656 INFO L229 MonitoredProcess]: Starting monitored process 105 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:03:10,658 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:03:10,658 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:03:10,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (105)] Waiting until timeout for monitored process [2021-10-28 09:03:10,688 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:03:10,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (105)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:10,720 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:03:10,720 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:03:10,720 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:03:10,720 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:03:10,720 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:03:10,720 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:03:10,720 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:03:10,720 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:03:10,720 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration20_Loop [2021-10-28 09:03:10,720 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:03:10,721 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:03:10,721 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 09:03:10,724 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 09:03:10,728 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 09:03:10,731 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:03:10,773 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:03:10,773 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:03:10,773 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:03:10,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:10,774 INFO L229 MonitoredProcess]: Starting monitored process 106 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:03:10,776 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 09:03:10,785 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:03:10,785 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:03:10,785 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:03:10,785 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:03:10,787 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:03:10,787 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:03:10,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (106)] Waiting until timeout for monitored process [2021-10-28 09:03:10,804 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:03:10,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (106)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:10,823 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:03:10,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:10,824 INFO L229 MonitoredProcess]: Starting monitored process 107 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:03:10,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (107)] Waiting until timeout for monitored process [2021-10-28 09:03:10,825 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 09:03:10,833 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:03:10,833 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:03:10,833 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:03:10,833 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:03:10,833 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:03:10,834 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:03:10,834 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:03:10,836 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:03:10,839 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 09:03:10,839 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 09:03:10,839 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:03:10,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:10,841 INFO L229 MonitoredProcess]: Starting monitored process 108 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:03:10,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (108)] Waiting until timeout for monitored process [2021-10-28 09:03:10,841 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:03:10,841 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:03:10,841 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:03:10,842 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 09:03:10,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (107)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:10,862 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:03:10,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:10,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:10,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:03:10,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:11,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:11,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 09:03:11,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:11,288 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 09:03:11,289 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 09:03:11,289 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 09:03:11,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (108)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:11,633 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 09:03:11,634 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 09:03:11,634 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 09:03:11,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 77 transitions. [2021-10-28 09:03:11,635 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 77 transitions. Stem has 63 letters. Loop has 60 letters. [2021-10-28 09:03:11,635 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:03:11,635 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 77 transitions. Stem has 123 letters. Loop has 60 letters. [2021-10-28 09:03:11,636 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:03:11,636 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 77 transitions. Stem has 63 letters. Loop has 120 letters. [2021-10-28 09:03:11,637 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:03:11,637 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1457 states and 1676 transitions. [2021-10-28 09:03:11,647 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 69 [2021-10-28 09:03:11,653 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1457 states to 980 states and 1131 transitions. [2021-10-28 09:03:11,653 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 196 [2021-10-28 09:03:11,654 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 205 [2021-10-28 09:03:11,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 980 states and 1131 transitions. [2021-10-28 09:03:11,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:03:11,654 INFO L681 BuchiCegarLoop]: Abstraction has 980 states and 1131 transitions. [2021-10-28 09:03:11,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states and 1131 transitions. [2021-10-28 09:03:11,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 597. [2021-10-28 09:03:11,666 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 09:03:11,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 712 transitions. [2021-10-28 09:03:11,668 INFO L704 BuchiCegarLoop]: Abstraction has 597 states and 712 transitions. [2021-10-28 09:03:11,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:03:11,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:03:11,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:03:11,669 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 09:03:11,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:03:11,708 INFO L93 Difference]: Finished difference Result 397 states and 451 transitions. [2021-10-28 09:03:11,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:03:11,709 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 397 states and 451 transitions. [2021-10-28 09:03:11,711 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 95 [2021-10-28 09:03:11,713 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 397 states to 345 states and 399 transitions. [2021-10-28 09:03:11,714 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 80 [2021-10-28 09:03:11,714 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 80 [2021-10-28 09:03:11,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 345 states and 399 transitions. [2021-10-28 09:03:11,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:03:11,715 INFO L681 BuchiCegarLoop]: Abstraction has 345 states and 399 transitions. [2021-10-28 09:03:11,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states and 399 transitions. [2021-10-28 09:03:11,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 223. [2021-10-28 09:03:11,719 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 09:03:11,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 259 transitions. [2021-10-28 09:03:11,720 INFO L704 BuchiCegarLoop]: Abstraction has 223 states and 259 transitions. [2021-10-28 09:03:11,720 INFO L587 BuchiCegarLoop]: Abstraction has 223 states and 259 transitions. [2021-10-28 09:03:11,720 INFO L425 BuchiCegarLoop]: ======== Iteration 21============ [2021-10-28 09:03:11,720 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 223 states and 259 transitions. [2021-10-28 09:03:11,721 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 69 [2021-10-28 09:03:11,722 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:03:11,722 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:03:11,723 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [17, 15, 15, 9, 7, 2, 1, 1] [2021-10-28 09:03:11,723 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [16, 15, 15, 9, 7, 1, 1] [2021-10-28 09:03:11,723 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 09:03:11,723 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 09:03:11,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:11,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1714987717, now seen corresponding path program 14 times [2021-10-28 09:03:11,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:11,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130060698] [2021-10-28 09:03:11,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:11,725 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:11,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:11,787 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 09:03:11,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:11,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130060698] [2021-10-28 09:03:11,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130060698] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:11,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841029175] [2021-10-28 09:03:11,788 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:03:11,788 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:11,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:11,789 INFO L229 MonitoredProcess]: Starting monitored process 109 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:03:11,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2021-10-28 09:03:12,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:03:12,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:03:12,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 09:03:12,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:12,340 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 09:03:12,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841029175] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:12,340 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:03:12,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-10-28 09:03:12,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705135717] [2021-10-28 09:03:12,340 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:03:12,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:12,341 INFO L85 PathProgramCache]: Analyzing trace with hash 590625123, now seen corresponding path program 12 times [2021-10-28 09:03:12,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:12,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528410646] [2021-10-28 09:03:12,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:12,342 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:12,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:03:12,352 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:03:12,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:03:12,360 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:03:12,669 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:03:12,669 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:03:12,669 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:03:12,669 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:03:12,670 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:03:12,670 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:03:12,670 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:03:12,670 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:03:12,670 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration21_Loop [2021-10-28 09:03:12,670 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:03:12,670 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:03:12,670 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 09:03:12,672 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 09:03:12,674 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 09:03:12,677 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 09:03:12,712 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:03:12,712 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:03:12,713 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:03:12,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:12,713 INFO L229 MonitoredProcess]: Starting monitored process 110 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:03:12,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (110)] Waiting until timeout for monitored process [2021-10-28 09:03:12,714 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:03:12,714 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:03:12,727 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:03:12,727 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 09:03:12,745 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (110)] Ended with exit code 0 [2021-10-28 09:03:12,746 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:03:12,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:12,746 INFO L229 MonitoredProcess]: Starting monitored process 111 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:03:12,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (111)] Waiting until timeout for monitored process [2021-10-28 09:03:12,747 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:03:12,748 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:03:12,760 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:03:12,761 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 09:03:12,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (111)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:12,780 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:03:12,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:12,780 INFO L229 MonitoredProcess]: Starting monitored process 112 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:03:12,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (112)] Waiting until timeout for monitored process [2021-10-28 09:03:12,781 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:03:12,781 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:03:12,812 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (112)] Ended with exit code 0 [2021-10-28 09:03:12,812 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:03:12,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:12,813 INFO L229 MonitoredProcess]: Starting monitored process 113 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:03:12,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (113)] Waiting until timeout for monitored process [2021-10-28 09:03:12,814 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:03:12,814 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:03:12,823 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:03:12,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (113)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:12,842 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:03:12,842 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:03:12,842 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:03:12,842 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:03:12,842 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:03:12,842 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:03:12,842 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:03:12,842 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:03:12,842 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration21_Loop [2021-10-28 09:03:12,842 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:03:12,842 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:03:12,843 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 09:03:12,845 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 09:03:12,848 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 09:03:12,850 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 09:03:12,921 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:03:12,921 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:03:12,921 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:03:12,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:12,922 INFO L229 MonitoredProcess]: Starting monitored process 114 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:03:12,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (114)] Waiting until timeout for monitored process [2021-10-28 09:03:12,934 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 09:03:12,941 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:03:12,941 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:03:12,941 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:03:12,941 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:03:12,942 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:03:12,942 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:03:12,945 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:03:12,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (114)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:12,964 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:03:12,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:12,965 INFO L229 MonitoredProcess]: Starting monitored process 115 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:03:12,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (115)] Waiting until timeout for monitored process [2021-10-28 09:03:12,966 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 09:03:12,972 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:03:12,973 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:03:12,973 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:03:12,973 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:03:12,973 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:03:12,976 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:03:12,976 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:03:12,984 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:03:12,986 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 09:03:12,986 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 09:03:12,986 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:03:12,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:12,987 INFO L229 MonitoredProcess]: Starting monitored process 116 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:03:12,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (116)] Waiting until timeout for monitored process [2021-10-28 09:03:12,988 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:03:12,988 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:03:12,989 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:03:12,989 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 09:03:13,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (115)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:13,010 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:03:13,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:13,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:13,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:03:13,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:13,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:13,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 09:03:13,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:13,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (116)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:13,476 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 09:03:13,476 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 09:03:13,477 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 09:03:13,844 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 09:03:13,844 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 09:03:13,844 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 09:03:13,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 87 transitions. [2021-10-28 09:03:13,845 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 18 states and 87 transitions. Stem has 67 letters. Loop has 64 letters. [2021-10-28 09:03:13,845 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:03:13,846 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 18 states and 87 transitions. Stem has 131 letters. Loop has 64 letters. [2021-10-28 09:03:13,846 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:03:13,846 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 18 states and 87 transitions. Stem has 67 letters. Loop has 128 letters. [2021-10-28 09:03:13,847 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:03:13,847 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1793 states and 2049 transitions. [2021-10-28 09:03:13,861 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 73 [2021-10-28 09:03:13,869 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1793 states to 1168 states and 1341 transitions. [2021-10-28 09:03:13,870 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 229 [2021-10-28 09:03:13,871 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 239 [2021-10-28 09:03:13,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1168 states and 1341 transitions. [2021-10-28 09:03:13,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:03:13,877 INFO L681 BuchiCegarLoop]: Abstraction has 1168 states and 1341 transitions. [2021-10-28 09:03:13,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states and 1341 transitions. [2021-10-28 09:03:13,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 677. [2021-10-28 09:03:13,891 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 09:03:13,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 808 transitions. [2021-10-28 09:03:13,894 INFO L704 BuchiCegarLoop]: Abstraction has 677 states and 808 transitions. [2021-10-28 09:03:13,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:03:13,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:03:13,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:03:13,895 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 09:03:13,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:03:13,938 INFO L93 Difference]: Finished difference Result 437 states and 494 transitions. [2021-10-28 09:03:13,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:03:13,939 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 437 states and 494 transitions. [2021-10-28 09:03:13,942 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 103 [2021-10-28 09:03:13,945 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 437 states to 377 states and 434 transitions. [2021-10-28 09:03:13,945 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 84 [2021-10-28 09:03:13,945 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 84 [2021-10-28 09:03:13,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 377 states and 434 transitions. [2021-10-28 09:03:13,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:03:13,947 INFO L681 BuchiCegarLoop]: Abstraction has 377 states and 434 transitions. [2021-10-28 09:03:13,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states and 434 transitions. [2021-10-28 09:03:13,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 235. [2021-10-28 09:03:13,952 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 09:03:13,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 271 transitions. [2021-10-28 09:03:13,953 INFO L704 BuchiCegarLoop]: Abstraction has 235 states and 271 transitions. [2021-10-28 09:03:13,954 INFO L587 BuchiCegarLoop]: Abstraction has 235 states and 271 transitions. [2021-10-28 09:03:13,954 INFO L425 BuchiCegarLoop]: ======== Iteration 22============ [2021-10-28 09:03:13,954 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 235 states and 271 transitions. [2021-10-28 09:03:13,955 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 73 [2021-10-28 09:03:13,955 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:03:13,956 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:03:13,957 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [18, 16, 16, 9, 8, 2, 1, 1] [2021-10-28 09:03:13,957 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [17, 16, 16, 9, 8, 1, 1] [2021-10-28 09:03:13,957 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 09:03:13,957 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 09:03:13,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:13,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1278125010, now seen corresponding path program 15 times [2021-10-28 09:03:13,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:13,958 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111083664] [2021-10-28 09:03:13,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:13,959 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:13,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:14,044 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 09:03:14,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:14,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111083664] [2021-10-28 09:03:14,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111083664] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:14,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120267190] [2021-10-28 09:03:14,045 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:03:14,045 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:14,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:14,046 INFO L229 MonitoredProcess]: Starting monitored process 117 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:03:14,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2021-10-28 09:03:14,514 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2021-10-28 09:03:14,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:03:14,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-28 09:03:14,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:14,761 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 09:03:14,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120267190] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:14,761 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:03:14,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 12 [2021-10-28 09:03:14,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660954827] [2021-10-28 09:03:14,763 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:03:14,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:14,763 INFO L85 PathProgramCache]: Analyzing trace with hash -976981044, now seen corresponding path program 13 times [2021-10-28 09:03:14,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:14,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942755453] [2021-10-28 09:03:14,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:14,764 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:14,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:03:14,777 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:03:14,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:03:14,785 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:03:15,043 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:03:15,043 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:03:15,044 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:03:15,044 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:03:15,044 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:03:15,044 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:03:15,044 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:03:15,044 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:03:15,044 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration22_Loop [2021-10-28 09:03:15,044 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:03:15,044 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:03:15,045 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 09:03:15,055 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 09:03:15,057 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 09:03:15,060 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 09:03:15,106 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:03:15,107 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:03:15,107 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:03:15,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:15,112 INFO L229 MonitoredProcess]: Starting monitored process 118 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:03:15,117 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:03:15,117 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:03:15,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (118)] Waiting until timeout for monitored process [2021-10-28 09:03:15,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (118)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:15,168 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:03:15,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:15,172 INFO L229 MonitoredProcess]: Starting monitored process 119 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:03:15,174 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:03:15,174 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:03:15,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (119)] Waiting until timeout for monitored process [2021-10-28 09:03:15,196 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:03:15,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (119)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:15,227 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:03:15,227 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:03:15,227 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:03:15,228 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:03:15,228 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:03:15,228 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:03:15,228 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:03:15,228 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:03:15,228 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration22_Loop [2021-10-28 09:03:15,228 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:03:15,228 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:03:15,228 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 09:03:15,232 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 09:03:15,234 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 09:03:15,236 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 09:03:15,278 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:03:15,278 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:03:15,279 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:03:15,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:15,280 INFO L229 MonitoredProcess]: Starting monitored process 120 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:03:15,288 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 09:03:15,297 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:03:15,297 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:03:15,297 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:03:15,297 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:03:15,297 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:03:15,298 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:03:15,298 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:03:15,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (120)] Waiting until timeout for monitored process [2021-10-28 09:03:15,307 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:03:15,314 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-28 09:03:15,314 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 09:03:15,314 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:03:15,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:15,320 INFO L229 MonitoredProcess]: Starting monitored process 121 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:03:15,321 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:03:15,321 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:03:15,321 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:03:15,321 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 09:03:15,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (121)] Waiting until timeout for monitored process [2021-10-28 09:03:15,353 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (120)] Ended with exit code 0 [2021-10-28 09:03:15,354 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:03:15,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:15,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:15,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:03:15,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:15,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:15,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 09:03:15,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:15,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (121)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:15,824 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 09:03:15,825 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 09:03:15,825 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 09:03:16,245 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 09:03:16,246 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 09:03:16,246 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 09:03:16,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 97 transitions. [2021-10-28 09:03:16,246 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 97 transitions. Stem has 71 letters. Loop has 68 letters. [2021-10-28 09:03:16,247 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:03:16,247 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 97 transitions. Stem has 139 letters. Loop has 68 letters. [2021-10-28 09:03:16,248 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:03:16,248 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 97 transitions. Stem has 71 letters. Loop has 136 letters. [2021-10-28 09:03:16,248 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:03:16,249 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2169 states and 2468 transitions. [2021-10-28 09:03:16,261 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 77 [2021-10-28 09:03:16,270 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2169 states to 1376 states and 1575 transitions. [2021-10-28 09:03:16,270 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 266 [2021-10-28 09:03:16,271 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 277 [2021-10-28 09:03:16,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1376 states and 1575 transitions. [2021-10-28 09:03:16,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:03:16,271 INFO L681 BuchiCegarLoop]: Abstraction has 1376 states and 1575 transitions. [2021-10-28 09:03:16,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states and 1575 transitions. [2021-10-28 09:03:16,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 765. [2021-10-28 09:03:16,286 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 09:03:16,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 914 transitions. [2021-10-28 09:03:16,288 INFO L704 BuchiCegarLoop]: Abstraction has 765 states and 914 transitions. [2021-10-28 09:03:16,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:03:16,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 09:03:16,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:03:16,289 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 09:03:16,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:03:16,346 INFO L93 Difference]: Finished difference Result 477 states and 537 transitions. [2021-10-28 09:03:16,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:03:16,347 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 477 states and 537 transitions. [2021-10-28 09:03:16,350 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 111 [2021-10-28 09:03:16,352 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 477 states to 409 states and 469 transitions. [2021-10-28 09:03:16,352 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 88 [2021-10-28 09:03:16,352 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 88 [2021-10-28 09:03:16,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 409 states and 469 transitions. [2021-10-28 09:03:16,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:03:16,353 INFO L681 BuchiCegarLoop]: Abstraction has 409 states and 469 transitions. [2021-10-28 09:03:16,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states and 469 transitions. [2021-10-28 09:03:16,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 247. [2021-10-28 09:03:16,358 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 09:03:16,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 283 transitions. [2021-10-28 09:03:16,359 INFO L704 BuchiCegarLoop]: Abstraction has 247 states and 283 transitions. [2021-10-28 09:03:16,359 INFO L587 BuchiCegarLoop]: Abstraction has 247 states and 283 transitions. [2021-10-28 09:03:16,359 INFO L425 BuchiCegarLoop]: ======== Iteration 23============ [2021-10-28 09:03:16,359 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 247 states and 283 transitions. [2021-10-28 09:03:16,360 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 77 [2021-10-28 09:03:16,360 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:03:16,360 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:03:16,361 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [19, 17, 17, 9, 9, 2, 1, 1] [2021-10-28 09:03:16,361 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [18, 17, 17, 9, 9, 1, 1] [2021-10-28 09:03:16,362 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 09:03:16,362 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 09:03:16,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:16,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1439876841, now seen corresponding path program 16 times [2021-10-28 09:03:16,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:16,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895177804] [2021-10-28 09:03:16,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:16,363 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:16,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:03:16,375 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:03:16,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:03:16,383 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:03:16,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:16,383 INFO L85 PathProgramCache]: Analyzing trace with hash -680570443, now seen corresponding path program 14 times [2021-10-28 09:03:16,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:16,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28583211] [2021-10-28 09:03:16,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:16,384 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:16,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:03:16,420 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:03:16,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:03:16,428 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:03:16,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:16,429 INFO L85 PathProgramCache]: Analyzing trace with hash -569285429, now seen corresponding path program 17 times [2021-10-28 09:03:16,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:16,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411246843] [2021-10-28 09:03:16,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:16,429 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:16,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:03:16,451 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:03:16,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:03:16,473 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:03:17,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 09:03:17 BoogieIcfgContainer [2021-10-28 09:03:17,131 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 09:03:17,131 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:03:17,132 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:03:17,132 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:03:17,132 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:02:52" (3/4) ... [2021-10-28 09:03:17,135 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-28 09:03:17,196 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:03:17,196 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:03:17,198 INFO L168 Benchmark]: Toolchain (without parser) took 25100.11 ms. Allocated memory was 132.1 MB in the beginning and 337.6 MB in the end (delta: 205.5 MB). Free memory was 96.0 MB in the beginning and 159.7 MB in the end (delta: -63.7 MB). Peak memory consumption was 141.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:03:17,198 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 132.1 MB. Free memory was 107.3 MB in the beginning and 107.2 MB in the end (delta: 32.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:03:17,199 INFO L168 Benchmark]: CACSL2BoogieTranslator took 220.19 ms. Allocated memory is still 132.1 MB. Free memory was 95.7 MB in the beginning and 106.4 MB in the end (delta: -10.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:03:17,199 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.13 ms. Allocated memory is still 132.1 MB. Free memory was 106.4 MB in the beginning and 105.3 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:03:17,200 INFO L168 Benchmark]: Boogie Preprocessor took 17.89 ms. Allocated memory is still 132.1 MB. Free memory was 105.3 MB in the beginning and 104.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:03:17,200 INFO L168 Benchmark]: RCFGBuilder took 244.16 ms. Allocated memory is still 132.1 MB. Free memory was 104.3 MB in the beginning and 96.3 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:03:17,201 INFO L168 Benchmark]: BuchiAutomizer took 24519.88 ms. Allocated memory was 132.1 MB in the beginning and 337.6 MB in the end (delta: 205.5 MB). Free memory was 96.3 MB in the beginning and 163.9 MB in the end (delta: -67.6 MB). Peak memory consumption was 190.7 MB. Max. memory is 16.1 GB. [2021-10-28 09:03:17,201 INFO L168 Benchmark]: Witness Printer took 65.17 ms. Allocated memory is still 337.6 MB. Free memory was 163.9 MB in the beginning and 159.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:03:17,203 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 132.1 MB. Free memory was 107.3 MB in the beginning and 107.2 MB in the end (delta: 32.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 220.19 ms. Allocated memory is still 132.1 MB. Free memory was 95.7 MB in the beginning and 106.4 MB in the end (delta: -10.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 27.13 ms. Allocated memory is still 132.1 MB. Free memory was 106.4 MB in the beginning and 105.3 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.89 ms. Allocated memory is still 132.1 MB. Free memory was 105.3 MB in the beginning and 104.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 244.16 ms. Allocated memory is still 132.1 MB. Free memory was 104.3 MB in the beginning and 96.3 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 24519.88 ms. Allocated memory was 132.1 MB in the beginning and 337.6 MB in the end (delta: 205.5 MB). Free memory was 96.3 MB in the beginning and 163.9 MB in the end (delta: -67.6 MB). Peak memory consumption was 190.7 MB. Max. memory is 16.1 GB. * Witness Printer took 65.17 ms. Allocated memory is still 337.6 MB. Free memory was 163.9 MB in the beginning and 159.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 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 24.4s and 23 iterations. TraceHistogramMax:19. Analysis of lassos took 17.3s. Construction of modules took 1.1s. Büchi inclusion checks took 5.2s. 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, 1.1s 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: 114ms VariablesStem: 1 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 26 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 12 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.8s - 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@c01650a=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 09:03:17,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:17,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:17,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:17,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:18,072 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0 [2021-10-28 09:03:18,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:18,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:18,673 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2021-10-28 09:03:18,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:19,073 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2021-10-28 09:03:19,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:19,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:19,674 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2021-10-28 09:03:19,874 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2021-10-28 09:03:20,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:20,274 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2021-10-28 09:03:20,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:20,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:20,874 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2021-10-28 09:03:21,075 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2021-10-28 09:03:21,275 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2021-10-28 09:03:21,475 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2021-10-28 09:03:21,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f835581-893b-4912-8895-198ad81dad87/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...