./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY --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 33be026e9ca846df0a8faa91fc9c2bbf64ee20dbba0f4f48a9cd42fbefb372d5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 08:29:59,721 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 08:29:59,725 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 08:29:59,789 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 08:29:59,789 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 08:29:59,794 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 08:29:59,798 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 08:29:59,802 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 08:29:59,805 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 08:29:59,812 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 08:29:59,814 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 08:29:59,815 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 08:29:59,816 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 08:29:59,818 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 08:29:59,821 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 08:29:59,823 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 08:29:59,825 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 08:29:59,826 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 08:29:59,832 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 08:29:59,839 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 08:29:59,842 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 08:29:59,843 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 08:29:59,847 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 08:29:59,848 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 08:29:59,854 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 08:29:59,855 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 08:29:59,855 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 08:29:59,857 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 08:29:59,858 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 08:29:59,860 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 08:29:59,860 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 08:29:59,861 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 08:29:59,863 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 08:29:59,864 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 08:29:59,866 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 08:29:59,866 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 08:29:59,867 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 08:29:59,867 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 08:29:59,868 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 08:29:59,869 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 08:29:59,869 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 08:29:59,870 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-11-07 08:29:59,918 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 08:29:59,918 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 08:29:59,919 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 08:29:59,919 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 08:29:59,921 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 08:29:59,921 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 08:29:59,921 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 08:29:59,922 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-07 08:29:59,922 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-07 08:29:59,922 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-07 08:29:59,923 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-07 08:29:59,923 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-07 08:29:59,924 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-07 08:29:59,924 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 08:29:59,924 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 08:29:59,924 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 08:29:59,925 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 08:29:59,925 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-07 08:29:59,925 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-07 08:29:59,925 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-07 08:29:59,925 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 08:29:59,926 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-07 08:29:59,926 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 08:29:59,926 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-07 08:29:59,926 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 08:29:59,927 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 08:29:59,928 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 08:29:59,928 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 08:29:59,929 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 08:29:59,930 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-07 08:29:59,930 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_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 33be026e9ca846df0a8faa91fc9c2bbf64ee20dbba0f4f48a9cd42fbefb372d5 [2021-11-07 08:30:00,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 08:30:00,295 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 08:30:00,298 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 08:30:00,300 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 08:30:00,300 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 08:30:00,301 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2021-11-07 08:30:00,372 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/data/ab9cefc37/6e9793feb5b04da795af2d7e542a70a0/FLAG3504677ce [2021-11-07 08:30:00,810 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 08:30:00,811 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2021-11-07 08:30:00,821 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/data/ab9cefc37/6e9793feb5b04da795af2d7e542a70a0/FLAG3504677ce [2021-11-07 08:30:01,211 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/data/ab9cefc37/6e9793feb5b04da795af2d7e542a70a0 [2021-11-07 08:30:01,213 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 08:30:01,215 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 08:30:01,216 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 08:30:01,217 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 08:30:01,220 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 08:30:01,221 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:30:01" (1/1) ... [2021-11-07 08:30:01,222 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2125187c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:30:01, skipping insertion in model container [2021-11-07 08:30:01,222 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:30:01" (1/1) ... [2021-11-07 08:30:01,230 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 08:30:01,242 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 08:30:01,424 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:30:01,432 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 08:30:01,445 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:30:01,457 INFO L208 MainTranslator]: Completed translation [2021-11-07 08:30:01,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:30:01 WrapperNode [2021-11-07 08:30:01,458 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 08:30:01,459 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 08:30:01,459 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 08:30:01,459 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 08:30:01,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:30:01" (1/1) ... [2021-11-07 08:30:01,471 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:30:01" (1/1) ... [2021-11-07 08:30:01,488 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 08:30:01,489 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 08:30:01,490 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 08:30:01,490 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 08:30:01,498 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:30:01" (1/1) ... [2021-11-07 08:30:01,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:30:01" (1/1) ... [2021-11-07 08:30:01,499 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:30:01" (1/1) ... [2021-11-07 08:30:01,499 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:30:01" (1/1) ... [2021-11-07 08:30:01,501 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:30:01" (1/1) ... [2021-11-07 08:30:01,505 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:30:01" (1/1) ... [2021-11-07 08:30:01,506 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:30:01" (1/1) ... [2021-11-07 08:30:01,507 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 08:30:01,508 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 08:30:01,509 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 08:30:01,509 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 08:30:01,510 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:30:01" (1/1) ... [2021-11-07 08:30:01,517 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:01,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:01,550 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:01,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-07 08:30:01,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 08:30:01,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 08:30:01,779 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 08:30:01,779 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-07 08:30:01,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:30:01 BoogieIcfgContainer [2021-11-07 08:30:01,782 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 08:30:01,784 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-07 08:30:01,784 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-07 08:30:01,788 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-07 08:30:01,789 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-07 08:30:01,789 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.11 08:30:01" (1/3) ... [2021-11-07 08:30:01,790 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4e515dd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.11 08:30:01, skipping insertion in model container [2021-11-07 08:30:01,791 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-07 08:30:01,791 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:30:01" (2/3) ... [2021-11-07 08:30:01,791 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4e515dd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.11 08:30:01, skipping insertion in model container [2021-11-07 08:30:01,791 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-07 08:30:01,791 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:30:01" (3/3) ... [2021-11-07 08:30:01,793 INFO L389 chiAutomizerObserver]: Analyzing ICFG LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2021-11-07 08:30:01,865 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-07 08:30:01,865 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-07 08:30:01,866 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-07 08:30:01,866 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-07 08:30:01,866 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-07 08:30:01,866 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-07 08:30:01,866 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-07 08:30:01,866 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-07 08:30:01,880 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) [2021-11-07 08:30:01,895 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-11-07 08:30:01,895 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-07 08:30:01,895 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-07 08:30:01,900 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-07 08:30:01,901 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-07 08:30:01,901 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-07 08:30:01,901 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) [2021-11-07 08:30:01,902 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-11-07 08:30:01,902 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-07 08:30:01,902 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-07 08:30:01,903 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-07 08:30:01,903 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-07 08:30:01,910 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 6#L21true assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 8#L22-2true [2021-11-07 08:30:01,910 INFO L793 eck$LassoCheckResult]: Loop: 8#L22-2true assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 5#L24-2true assume !(main_~y~0 < main_~z~0); 9#L24-3true main_~y~0 := main_~x~0 + main_~y~0; 8#L22-2true [2021-11-07 08:30:01,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:30:01,920 INFO L85 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2021-11-07 08:30:01,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:30:01,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135867066] [2021-11-07 08:30:01,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:30:01,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:30:02,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:30:02,006 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:30:02,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:30:02,027 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:30:02,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:30:02,030 INFO L85 PathProgramCache]: Analyzing trace with hash 42930, now seen corresponding path program 1 times [2021-11-07 08:30:02,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:30:02,031 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404484033] [2021-11-07 08:30:02,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:30:02,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:30:02,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:30:02,042 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:30:02,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:30:02,050 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:30:02,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:30:02,052 INFO L85 PathProgramCache]: Analyzing trace with hash 29684975, now seen corresponding path program 1 times [2021-11-07 08:30:02,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:30:02,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430786671] [2021-11-07 08:30:02,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:30:02,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:30:02,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:30:02,062 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:30:02,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:30:02,071 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:30:02,165 INFO L210 LassoAnalysis]: Preferences: [2021-11-07 08:30:02,167 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-07 08:30:02,167 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-07 08:30:02,182 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-07 08:30:02,183 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-07 08:30:02,183 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:02,183 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-07 08:30:02,183 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-07 08:30:02,183 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration1_Loop [2021-11-07 08:30:02,183 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-07 08:30:02,184 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-07 08:30:02,227 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:30:02,237 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:30:02,241 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:30:02,337 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-07 08:30:02,338 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-07 08:30:02,340 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:02,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:02,342 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:02,371 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-07 08:30:02,371 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 08:30:02,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-11-07 08:30:02,397 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-07 08:30:02,397 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-07 08:30:02,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-11-07 08:30:02,424 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:02,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:02,425 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:02,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-11-07 08:30:02,427 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-07 08:30:02,427 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 08:30:02,441 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-07 08:30:02,442 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-07 08:30:02,467 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2021-11-07 08:30:02,467 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:02,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:02,471 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:02,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-11-07 08:30:02,475 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-07 08:30:02,476 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 08:30:02,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-11-07 08:30:02,515 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:02,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:02,516 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:02,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-11-07 08:30:02,520 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-07 08:30:02,521 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 08:30:02,724 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-07 08:30:02,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-11-07 08:30:02,728 INFO L210 LassoAnalysis]: Preferences: [2021-11-07 08:30:02,728 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-07 08:30:02,728 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-07 08:30:02,728 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-07 08:30:02,728 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-07 08:30:02,728 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:02,728 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-07 08:30:02,728 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-07 08:30:02,728 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration1_Loop [2021-11-07 08:30:02,729 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-07 08:30:02,729 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-07 08:30:02,730 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:30:02,736 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:30:02,749 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:30:02,822 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-07 08:30:02,827 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-07 08:30:02,828 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:02,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:02,831 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:02,846 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-07 08:30:02,856 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 08:30:02,857 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 08:30:02,857 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 08:30:02,857 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-07 08:30:02,865 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-07 08:30:02,866 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-07 08:30:02,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-11-07 08:30:02,895 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-07 08:30:02,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-11-07 08:30:02,940 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:02,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:02,941 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:02,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-11-07 08:30:02,956 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-07 08:30:02,965 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 08:30:02,965 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 08:30:02,965 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 08:30:02,965 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-07 08:30:02,969 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-07 08:30:02,969 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-07 08:30:02,984 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-07 08:30:03,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-11-07 08:30:03,013 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:03,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:03,014 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:03,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-11-07 08:30:03,018 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-07 08:30:03,028 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 08:30:03,028 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-07 08:30:03,029 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 08:30:03,029 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 08:30:03,029 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-07 08:30:03,031 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-07 08:30:03,031 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-07 08:30:03,046 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-07 08:30:03,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-11-07 08:30:03,083 INFO L490 LassoAnalysis]: Using template '2-nested'. [2021-11-07 08:30:03,084 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:03,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:03,085 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:03,095 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-07 08:30:03,104 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 08:30:03,105 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 08:30:03,105 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 08:30:03,105 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2021-11-07 08:30:03,119 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2021-11-07 08:30:03,119 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2021-11-07 08:30:03,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-11-07 08:30:03,146 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-07 08:30:03,171 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2021-11-07 08:30:03,171 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:03,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:03,172 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:03,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-11-07 08:30:03,178 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-07 08:30:03,187 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 08:30:03,187 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 08:30:03,187 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 08:30:03,187 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2021-11-07 08:30:03,194 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2021-11-07 08:30:03,194 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2021-11-07 08:30:03,218 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-07 08:30:03,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-11-07 08:30:03,242 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:03,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:03,243 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:03,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-11-07 08:30:03,245 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-07 08:30:03,252 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 08:30:03,253 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-07 08:30:03,253 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 08:30:03,253 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 08:30:03,253 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2021-11-07 08:30:03,255 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2021-11-07 08:30:03,256 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-07 08:30:03,259 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-07 08:30:03,266 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-11-07 08:30:03,267 INFO L444 ModelExtractionUtils]: 5 out of 9 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-07 08:30:03,268 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:03,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:03,284 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:03,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-11-07 08:30:03,286 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-07 08:30:03,286 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-07 08:30:03,286 INFO L513 LassoAnalysis]: Proved termination. [2021-11-07 08:30:03,287 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*ULTIMATE.start_main_~x~0 f1 = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2021-11-07 08:30:03,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-11-07 08:30:03,323 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-07 08:30:03,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:30:03,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:30:03,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 08:30:03,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:30:03,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:30:03,389 WARN L261 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 08:30:03,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:30:03,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:30:03,693 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-11-07 08:30:03,695 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. 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 1.6666666666666667) 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) [2021-11-07 08:30:03,740 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. 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 1.6666666666666667) 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 47 transitions. Complement of second has 8 states. [2021-11-07 08:30:03,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-11-07 08:30:03,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) 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) [2021-11-07 08:30:03,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 25 transitions. [2021-11-07 08:30:03,745 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 2 letters. Loop has 3 letters. [2021-11-07 08:30:03,746 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 08:30:03,746 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 5 letters. Loop has 3 letters. [2021-11-07 08:30:03,746 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 08:30:03,746 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 2 letters. Loop has 6 letters. [2021-11-07 08:30:03,747 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 08:30:03,747 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 47 transitions. [2021-11-07 08:30:03,751 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-11-07 08:30:03,754 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 10 states and 14 transitions. [2021-11-07 08:30:03,755 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2021-11-07 08:30:03,756 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-11-07 08:30:03,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 14 transitions. [2021-11-07 08:30:03,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-07 08:30:03,757 INFO L681 BuchiCegarLoop]: Abstraction has 10 states and 14 transitions. [2021-11-07 08:30:03,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 14 transitions. [2021-11-07 08:30:03,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-11-07 08:30:03,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.4) internal successors, (14), 9 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) [2021-11-07 08:30:03,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 14 transitions. [2021-11-07 08:30:03,782 INFO L704 BuchiCegarLoop]: Abstraction has 10 states and 14 transitions. [2021-11-07 08:30:03,782 INFO L587 BuchiCegarLoop]: Abstraction has 10 states and 14 transitions. [2021-11-07 08:30:03,782 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-07 08:30:03,782 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 14 transitions. [2021-11-07 08:30:03,783 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-11-07 08:30:03,783 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-07 08:30:03,783 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-07 08:30:03,784 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-11-07 08:30:03,784 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-11-07 08:30:03,784 INFO L791 eck$LassoCheckResult]: Stem: 89#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 90#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 95#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 91#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 92#L24-2 [2021-11-07 08:30:03,784 INFO L793 eck$LassoCheckResult]: Loop: 92#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 92#L24-2 [2021-11-07 08:30:03,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:30:03,785 INFO L85 PathProgramCache]: Analyzing trace with hash 957581, now seen corresponding path program 1 times [2021-11-07 08:30:03,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:30:03,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342899459] [2021-11-07 08:30:03,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:30:03,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:30:03,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:30:03,794 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:30:03,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:30:03,802 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:30:03,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:30:03,803 INFO L85 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 1 times [2021-11-07 08:30:03,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:30:03,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236616] [2021-11-07 08:30:03,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:30:03,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:30:03,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:30:03,809 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:30:03,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:30:03,813 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:30:03,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:30:03,814 INFO L85 PathProgramCache]: Analyzing trace with hash 29685033, now seen corresponding path program 2 times [2021-11-07 08:30:03,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:30:03,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443309641] [2021-11-07 08:30:03,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:30:03,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:30:03,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:30:03,824 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:30:03,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:30:03,834 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:30:03,852 INFO L210 LassoAnalysis]: Preferences: [2021-11-07 08:30:03,852 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-07 08:30:03,853 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-07 08:30:03,853 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-07 08:30:03,853 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-07 08:30:03,853 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:03,853 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-07 08:30:03,853 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-07 08:30:03,853 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration2_Loop [2021-11-07 08:30:03,853 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-07 08:30:03,854 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-07 08:30:03,855 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:30:03,858 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:30:03,860 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:30:03,866 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:30:03,905 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-07 08:30:03,905 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-07 08:30:03,905 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:03,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:03,906 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:03,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-11-07 08:30:03,915 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-07 08:30:03,915 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 08:30:03,971 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-07 08:30:03,972 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: [] [2021-11-07 08:30:03,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-11-07 08:30:03,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-11-07 08:30:03,992 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:03,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:03,993 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:03,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-11-07 08:30:03,997 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-07 08:30:03,997 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 08:30:04,011 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-07 08:30:04,011 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: [] [2021-11-07 08:30:04,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-11-07 08:30:04,034 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:04,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:04,036 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:04,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-11-07 08:30:04,037 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-07 08:30:04,037 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 08:30:04,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-11-07 08:30:04,068 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:04,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:04,069 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:04,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-11-07 08:30:04,071 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-07 08:30:04,071 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 08:30:04,249 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-07 08:30:04,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-11-07 08:30:04,255 INFO L210 LassoAnalysis]: Preferences: [2021-11-07 08:30:04,255 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-07 08:30:04,255 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-07 08:30:04,255 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-07 08:30:04,255 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-07 08:30:04,256 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:04,256 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-07 08:30:04,256 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-07 08:30:04,256 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration2_Loop [2021-11-07 08:30:04,256 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-07 08:30:04,256 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-07 08:30:04,257 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:30:04,261 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:30:04,264 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:30:04,270 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:30:04,316 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-07 08:30:04,316 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-07 08:30:04,316 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:04,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:04,317 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:04,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-11-07 08:30:04,342 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-07 08:30:04,353 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 08:30:04,353 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 08:30:04,353 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 08:30:04,353 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-07 08:30:04,355 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-07 08:30:04,355 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-07 08:30:04,370 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-07 08:30:04,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-11-07 08:30:04,406 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:04,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:04,408 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:04,413 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-07 08:30:04,423 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 08:30:04,423 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 08:30:04,423 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 08:30:04,423 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-07 08:30:04,425 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-07 08:30:04,425 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-07 08:30:04,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-11-07 08:30:04,446 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-07 08:30:04,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-11-07 08:30:04,475 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:04,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:04,476 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:04,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-11-07 08:30:04,479 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-07 08:30:04,486 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 08:30:04,486 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-07 08:30:04,487 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 08:30:04,487 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 08:30:04,487 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-07 08:30:04,488 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-07 08:30:04,488 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-07 08:30:04,526 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-07 08:30:04,532 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-11-07 08:30:04,532 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-07 08:30:04,533 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:04,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:04,534 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:04,565 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-07 08:30:04,566 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-07 08:30:04,566 INFO L513 LassoAnalysis]: Proved termination. [2021-11-07 08:30:04,566 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0) = -1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~z~0 Supporting invariants [] [2021-11-07 08:30:04,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-11-07 08:30:04,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-11-07 08:30:04,596 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-07 08:30:04,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:30:04,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:30:04,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 08:30:04,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:30:04,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:30:04,640 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 08:30:04,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:30:04,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:30:04,642 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-11-07 08:30:04,642 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 14 transitions. cyclomatic complexity: 6 Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:30:04,661 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 14 transitions. cyclomatic complexity: 6. Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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 17 states and 28 transitions. Complement of second has 6 states. [2021-11-07 08:30:04,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-11-07 08:30:04,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:30:04,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2021-11-07 08:30:04,664 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 1 letters. [2021-11-07 08:30:04,664 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 08:30:04,664 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 5 letters. Loop has 1 letters. [2021-11-07 08:30:04,664 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 08:30:04,664 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 2 letters. [2021-11-07 08:30:04,665 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 08:30:04,665 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 28 transitions. [2021-11-07 08:30:04,670 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-11-07 08:30:04,672 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 13 states and 19 transitions. [2021-11-07 08:30:04,672 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-11-07 08:30:04,672 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2021-11-07 08:30:04,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 19 transitions. [2021-11-07 08:30:04,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-07 08:30:04,673 INFO L681 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2021-11-07 08:30:04,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 19 transitions. [2021-11-07 08:30:04,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2021-11-07 08:30:04,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.5) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:30:04,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 18 transitions. [2021-11-07 08:30:04,677 INFO L704 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2021-11-07 08:30:04,677 INFO L587 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2021-11-07 08:30:04,677 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-11-07 08:30:04,677 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 18 transitions. [2021-11-07 08:30:04,679 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-11-07 08:30:04,680 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-07 08:30:04,680 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-07 08:30:04,681 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-11-07 08:30:04,681 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-07 08:30:04,682 INFO L791 eck$LassoCheckResult]: Stem: 152#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 153#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 157#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 160#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 163#L24-2 assume !(main_~y~0 < main_~z~0); 155#L24-3 [2021-11-07 08:30:04,683 INFO L793 eck$LassoCheckResult]: Loop: 155#L24-3 main_~y~0 := main_~x~0 + main_~y~0; 158#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 154#L24-2 assume !(main_~y~0 < main_~z~0); 155#L24-3 [2021-11-07 08:30:04,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:30:04,683 INFO L85 PathProgramCache]: Analyzing trace with hash 29685031, now seen corresponding path program 1 times [2021-11-07 08:30:04,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:30:04,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208518555] [2021-11-07 08:30:04,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:30:04,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:30:04,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:30:04,707 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:30:04,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:30:04,725 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:30:04,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:30:04,728 INFO L85 PathProgramCache]: Analyzing trace with hash 55200, now seen corresponding path program 2 times [2021-11-07 08:30:04,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:30:04,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615147371] [2021-11-07 08:30:04,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:30:04,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:30:04,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:30:04,746 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:30:04,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:30:04,750 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:30:04,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:30:04,751 INFO L85 PathProgramCache]: Analyzing trace with hash -416479046, now seen corresponding path program 1 times [2021-11-07 08:30:04,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:30:04,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305754938] [2021-11-07 08:30:04,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:30:04,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:30:04,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:30:04,766 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:30:04,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:30:04,780 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:30:04,807 INFO L210 LassoAnalysis]: Preferences: [2021-11-07 08:30:04,808 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-07 08:30:04,808 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-07 08:30:04,808 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-07 08:30:04,808 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-07 08:30:04,808 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:04,808 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-07 08:30:04,809 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-07 08:30:04,809 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration3_Loop [2021-11-07 08:30:04,809 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-07 08:30:04,809 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-07 08:30:04,810 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:30:04,813 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:30:04,826 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:30:04,866 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-07 08:30:04,866 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-07 08:30:04,867 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:04,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:04,868 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:04,875 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-07 08:30:04,875 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 08:30:04,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-11-07 08:30:04,889 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-07 08:30:04,890 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: [] [2021-11-07 08:30:04,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-11-07 08:30:04,914 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:04,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:04,914 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:04,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-11-07 08:30:04,917 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-07 08:30:04,917 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 08:30:04,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-11-07 08:30:04,946 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:04,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:04,948 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:04,950 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-07 08:30:04,950 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 08:30:04,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-11-07 08:30:05,206 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-07 08:30:05,209 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2021-11-07 08:30:05,209 INFO L210 LassoAnalysis]: Preferences: [2021-11-07 08:30:05,209 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-07 08:30:05,209 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-07 08:30:05,209 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-07 08:30:05,209 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-07 08:30:05,209 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:05,209 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-07 08:30:05,209 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-07 08:30:05,210 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration3_Loop [2021-11-07 08:30:05,210 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-07 08:30:05,210 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-07 08:30:05,211 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:30:05,236 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:30:05,240 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:30:05,276 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-07 08:30:05,276 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-07 08:30:05,276 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:05,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:05,277 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:05,287 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-07 08:30:05,297 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 08:30:05,297 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-07 08:30:05,297 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 08:30:05,297 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 08:30:05,297 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-07 08:30:05,299 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-07 08:30:05,299 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-07 08:30:05,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-11-07 08:30:05,310 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-07 08:30:05,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-11-07 08:30:05,347 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:05,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:05,348 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:05,352 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-07 08:30:05,362 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 08:30:05,362 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 08:30:05,362 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 08:30:05,362 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-07 08:30:05,364 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-07 08:30:05,365 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-07 08:30:05,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-11-07 08:30:05,378 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-07 08:30:05,399 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2021-11-07 08:30:05,399 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:05,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:05,400 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:05,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-11-07 08:30:05,402 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-07 08:30:05,409 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 08:30:05,410 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 08:30:05,410 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 08:30:05,410 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-07 08:30:05,412 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-07 08:30:05,412 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-07 08:30:05,442 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-07 08:30:05,473 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2021-11-07 08:30:05,473 INFO L490 LassoAnalysis]: Using template '2-nested'. [2021-11-07 08:30:05,473 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:05,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:05,474 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:05,475 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-07 08:30:05,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-11-07 08:30:05,483 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 08:30:05,483 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-07 08:30:05,483 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 08:30:05,483 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 08:30:05,483 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2021-11-07 08:30:05,488 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2021-11-07 08:30:05,488 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-07 08:30:05,506 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-07 08:30:05,522 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2021-11-07 08:30:05,522 INFO L444 ModelExtractionUtils]: 3 out of 9 variables were initially zero. Simplification set additionally 2 variables to zero. [2021-11-07 08:30:05,522 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:05,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:05,523 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:05,525 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-07 08:30:05,525 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-07 08:30:05,526 INFO L513 LassoAnalysis]: Proved termination. [2021-11-07 08:30:05,526 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*ULTIMATE.start_main_~x~0 f1 = 1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2021-11-07 08:30:05,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-11-07 08:30:05,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-11-07 08:30:05,567 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-07 08:30:05,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:30:05,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:30:05,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 08:30:05,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:30:05,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:30:05,614 WARN L261 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 08:30:05,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:30:05,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:30:05,867 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-11-07 08:30:05,868 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 18 transitions. cyclomatic complexity: 9 Second operand has 4 states, 4 states have (on average 2.0) 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) [2021-11-07 08:30:05,905 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 18 transitions. cyclomatic complexity: 9. Second operand has 4 states, 4 states have (on average 2.0) 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) Result 30 states and 45 transitions. Complement of second has 8 states. [2021-11-07 08:30:05,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-11-07 08:30:05,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.0) 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) [2021-11-07 08:30:05,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 15 transitions. [2021-11-07 08:30:05,907 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 5 letters. Loop has 3 letters. [2021-11-07 08:30:05,908 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 08:30:05,908 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 8 letters. Loop has 3 letters. [2021-11-07 08:30:05,908 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 08:30:05,908 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 5 letters. Loop has 6 letters. [2021-11-07 08:30:05,909 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 08:30:05,909 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 45 transitions. [2021-11-07 08:30:05,912 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-11-07 08:30:05,917 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 22 states and 33 transitions. [2021-11-07 08:30:05,917 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2021-11-07 08:30:05,918 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2021-11-07 08:30:05,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 33 transitions. [2021-11-07 08:30:05,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-07 08:30:05,918 INFO L681 BuchiCegarLoop]: Abstraction has 22 states and 33 transitions. [2021-11-07 08:30:05,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 33 transitions. [2021-11-07 08:30:05,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2021-11-07 08:30:05,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 17 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:30:05,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 26 transitions. [2021-11-07 08:30:05,923 INFO L704 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2021-11-07 08:30:05,923 INFO L587 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2021-11-07 08:30:05,924 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-11-07 08:30:05,924 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 26 transitions. [2021-11-07 08:30:05,926 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-11-07 08:30:05,926 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-07 08:30:05,926 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-07 08:30:05,927 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2021-11-07 08:30:05,927 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-11-07 08:30:05,927 INFO L791 eck$LassoCheckResult]: Stem: 247#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 248#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 253#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 263#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 261#L24-2 assume !(main_~y~0 < main_~z~0); 260#L24-3 main_~y~0 := main_~x~0 + main_~y~0; 257#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 259#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 258#L24-2 [2021-11-07 08:30:05,927 INFO L793 eck$LassoCheckResult]: Loop: 258#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 258#L24-2 [2021-11-07 08:30:05,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:30:05,929 INFO L85 PathProgramCache]: Analyzing trace with hash -416479044, now seen corresponding path program 2 times [2021-11-07 08:30:05,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:30:05,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395920111] [2021-11-07 08:30:05,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:30:05,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:30:05,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:30:05,950 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:30:05,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:30:05,975 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:30:05,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:30:05,977 INFO L85 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 2 times [2021-11-07 08:30:05,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:30:05,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661819984] [2021-11-07 08:30:05,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:30:05,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:30:05,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:30:05,983 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:30:05,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:30:05,988 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:30:05,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:30:05,990 INFO L85 PathProgramCache]: Analyzing trace with hash -25948454, now seen corresponding path program 3 times [2021-11-07 08:30:05,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:30:05,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239349507] [2021-11-07 08:30:05,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:30:05,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:30:06,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:30:06,010 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:30:06,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:30:06,019 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:30:06,037 INFO L210 LassoAnalysis]: Preferences: [2021-11-07 08:30:06,037 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-07 08:30:06,037 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-07 08:30:06,037 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-07 08:30:06,038 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-07 08:30:06,038 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:06,038 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-07 08:30:06,038 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-07 08:30:06,038 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration4_Loop [2021-11-07 08:30:06,038 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-07 08:30:06,038 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-07 08:30:06,040 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:30:06,044 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:30:06,050 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:30:06,053 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:30:06,104 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-07 08:30:06,104 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-07 08:30:06,105 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:06,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:06,106 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:06,112 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-07 08:30:06,112 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 08:30:06,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-11-07 08:30:06,127 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-07 08:30:06,127 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-07 08:30:06,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-11-07 08:30:06,146 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:06,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:06,147 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:06,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-11-07 08:30:06,158 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-07 08:30:06,158 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 08:30:06,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-11-07 08:30:06,186 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:06,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:06,187 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:06,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-11-07 08:30:06,188 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-07 08:30:06,189 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 08:30:06,370 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-07 08:30:06,372 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2021-11-07 08:30:06,372 INFO L210 LassoAnalysis]: Preferences: [2021-11-07 08:30:06,372 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-07 08:30:06,373 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-07 08:30:06,373 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-07 08:30:06,373 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-07 08:30:06,373 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:06,373 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-07 08:30:06,373 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-07 08:30:06,373 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration4_Loop [2021-11-07 08:30:06,373 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-07 08:30:06,373 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-07 08:30:06,374 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:30:06,379 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:30:06,384 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:30:06,399 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:30:06,438 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-07 08:30:06,438 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-07 08:30:06,438 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:06,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:06,439 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:06,456 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-07 08:30:06,465 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 08:30:06,465 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-07 08:30:06,465 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 08:30:06,465 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 08:30:06,465 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-07 08:30:06,466 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-07 08:30:06,466 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-07 08:30:06,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-11-07 08:30:06,482 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-07 08:30:06,487 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-11-07 08:30:06,487 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-07 08:30:06,487 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:06,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:06,489 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:06,516 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-07 08:30:06,517 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-07 08:30:06,517 INFO L513 LassoAnalysis]: Proved termination. [2021-11-07 08:30:06,517 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~z~0 - 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2021-11-07 08:30:06,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-11-07 08:30:06,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-11-07 08:30:06,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-11-07 08:30:06,560 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-07 08:30:06,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:30:06,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:30:06,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 08:30:06,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:30:06,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-11-07 08:30:06,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:30:06,617 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 08:30:06,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:30:06,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:30:06,618 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-11-07 08:30:06,619 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 13 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:30:06,628 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 13. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 21 states and 30 transitions. Complement of second has 5 states. [2021-11-07 08:30:06,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-11-07 08:30:06,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:30:06,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2021-11-07 08:30:06,629 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 1 letters. [2021-11-07 08:30:06,629 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 08:30:06,630 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-07 08:30:06,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:30:06,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:30:06,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 08:30:06,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:30:06,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:30:06,669 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 08:30:06,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:30:06,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:30:06,671 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2021-11-07 08:30:06,671 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 13 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:30:06,678 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 13. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 21 states and 30 transitions. Complement of second has 5 states. [2021-11-07 08:30:06,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-11-07 08:30:06,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:30:06,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2021-11-07 08:30:06,680 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 1 letters. [2021-11-07 08:30:06,680 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 08:30:06,680 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-07 08:30:06,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:30:06,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:30:06,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 08:30:06,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:30:06,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:30:06,719 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 08:30:06,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:30:06,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:30:06,720 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 1 loop predicates [2021-11-07 08:30:06,720 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 13 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:30:06,729 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 13. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 29 states and 45 transitions. Complement of second has 5 states. [2021-11-07 08:30:06,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-11-07 08:30:06,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:30:06,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2021-11-07 08:30:06,731 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 8 letters. Loop has 1 letters. [2021-11-07 08:30:06,731 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 08:30:06,731 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 9 letters. Loop has 1 letters. [2021-11-07 08:30:06,731 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 08:30:06,731 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 8 letters. Loop has 2 letters. [2021-11-07 08:30:06,732 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 08:30:06,732 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 45 transitions. [2021-11-07 08:30:06,733 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-11-07 08:30:06,734 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 22 states and 31 transitions. [2021-11-07 08:30:06,734 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2021-11-07 08:30:06,734 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2021-11-07 08:30:06,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 31 transitions. [2021-11-07 08:30:06,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-07 08:30:06,734 INFO L681 BuchiCegarLoop]: Abstraction has 22 states and 31 transitions. [2021-11-07 08:30:06,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 31 transitions. [2021-11-07 08:30:06,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2021-11-07 08:30:06,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 17 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:30:06,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 26 transitions. [2021-11-07 08:30:06,737 INFO L704 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2021-11-07 08:30:06,737 INFO L587 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2021-11-07 08:30:06,737 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-11-07 08:30:06,737 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 26 transitions. [2021-11-07 08:30:06,738 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-11-07 08:30:06,738 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-07 08:30:06,738 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-07 08:30:06,738 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2021-11-07 08:30:06,739 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-07 08:30:06,739 INFO L791 eck$LassoCheckResult]: Stem: 447#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 448#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 453#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 451#L24-2 assume !(main_~y~0 < main_~z~0); 452#L24-3 main_~y~0 := main_~x~0 + main_~y~0; 456#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 449#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 450#L24-2 assume !(main_~y~0 < main_~z~0); 454#L24-3 [2021-11-07 08:30:06,739 INFO L793 eck$LassoCheckResult]: Loop: 454#L24-3 main_~y~0 := main_~x~0 + main_~y~0; 455#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 459#L24-2 assume !(main_~y~0 < main_~z~0); 454#L24-3 [2021-11-07 08:30:06,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:30:06,739 INFO L85 PathProgramCache]: Analyzing trace with hash -418159556, now seen corresponding path program 4 times [2021-11-07 08:30:06,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:30:06,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422188307] [2021-11-07 08:30:06,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:30:06,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:30:06,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:30:06,747 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:30:06,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:30:06,753 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:30:06,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:30:06,754 INFO L85 PathProgramCache]: Analyzing trace with hash 55200, now seen corresponding path program 3 times [2021-11-07 08:30:06,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:30:06,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337936703] [2021-11-07 08:30:06,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:30:06,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:30:06,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:30:06,757 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:30:06,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:30:06,760 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:30:06,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:30:06,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1986148987, now seen corresponding path program 5 times [2021-11-07 08:30:06,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:30:06,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304140896] [2021-11-07 08:30:06,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:30:06,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:30:06,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:30:06,827 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:30:06,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:30:06,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304140896] [2021-11-07 08:30:06,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304140896] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:30:06,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701588221] [2021-11-07 08:30:06,828 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 08:30:06,828 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:30:06,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:06,829 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:30:06,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-11-07 08:30:06,883 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-11-07 08:30:06,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:30:06,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 08:30:06,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:30:06,946 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:30:06,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701588221] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:30:06,946 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:30:06,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-11-07 08:30:06,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456001683] [2021-11-07 08:30:06,970 INFO L210 LassoAnalysis]: Preferences: [2021-11-07 08:30:06,971 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-07 08:30:06,971 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-07 08:30:06,971 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-07 08:30:06,971 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-07 08:30:06,971 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:06,971 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-07 08:30:06,971 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-07 08:30:06,971 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration5_Loop [2021-11-07 08:30:06,972 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-07 08:30:06,972 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-07 08:30:06,973 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:30:06,975 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:30:06,978 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:30:07,025 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-07 08:30:07,025 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-07 08:30:07,025 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:07,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:07,026 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:07,028 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-07 08:30:07,028 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 08:30:07,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-11-07 08:30:07,044 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-07 08:30:07,044 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_9=1} Honda state: {v_rep~unnamed0~0~true_9=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-07 08:30:07,063 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2021-11-07 08:30:07,064 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:07,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:07,066 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:07,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-11-07 08:30:07,068 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-07 08:30:07,068 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 08:30:07,080 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-07 08:30:07,080 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_9=0} Honda state: {v_rep~unnamed0~0~false_9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-07 08:30:07,100 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2021-11-07 08:30:07,100 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:07,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:07,101 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:07,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-11-07 08:30:07,102 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-07 08:30:07,102 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 08:30:07,133 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2021-11-07 08:30:07,133 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:07,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:07,134 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:07,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-11-07 08:30:07,135 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-07 08:30:07,135 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 08:30:07,326 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-07 08:30:07,328 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2021-11-07 08:30:07,328 INFO L210 LassoAnalysis]: Preferences: [2021-11-07 08:30:07,329 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-07 08:30:07,329 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-07 08:30:07,329 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-07 08:30:07,329 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-07 08:30:07,329 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:07,329 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-07 08:30:07,329 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-07 08:30:07,329 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration5_Loop [2021-11-07 08:30:07,329 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-07 08:30:07,329 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-07 08:30:07,330 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:30:07,337 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:30:07,339 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:30:07,390 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-07 08:30:07,390 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-07 08:30:07,390 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:07,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:07,391 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:07,407 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-07 08:30:07,416 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 08:30:07,416 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 08:30:07,417 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 08:30:07,417 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-07 08:30:07,418 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-07 08:30:07,419 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-07 08:30:07,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2021-11-07 08:30:07,434 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-07 08:30:07,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2021-11-07 08:30:07,468 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:07,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:07,469 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:07,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-11-07 08:30:07,472 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-07 08:30:07,479 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 08:30:07,479 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 08:30:07,479 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 08:30:07,479 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-07 08:30:07,481 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-07 08:30:07,481 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-07 08:30:07,492 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-07 08:30:07,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2021-11-07 08:30:07,525 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:07,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:07,527 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:07,535 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-07 08:30:07,544 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 08:30:07,544 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-07 08:30:07,544 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 08:30:07,544 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 08:30:07,544 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-07 08:30:07,545 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-07 08:30:07,546 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-07 08:30:07,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-11-07 08:30:07,558 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-07 08:30:07,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2021-11-07 08:30:07,577 INFO L490 LassoAnalysis]: Using template '2-nested'. [2021-11-07 08:30:07,577 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:07,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:07,578 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:07,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-11-07 08:30:07,579 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-07 08:30:07,586 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 08:30:07,586 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 08:30:07,586 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 08:30:07,587 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2021-11-07 08:30:07,588 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2021-11-07 08:30:07,589 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2021-11-07 08:30:07,614 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-07 08:30:07,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2021-11-07 08:30:07,650 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:07,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:07,651 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:07,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-11-07 08:30:07,654 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-07 08:30:07,661 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 08:30:07,661 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 08:30:07,662 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 08:30:07,662 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2021-11-07 08:30:07,664 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2021-11-07 08:30:07,664 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2021-11-07 08:30:07,694 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-07 08:30:07,721 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Ended with exit code 0 [2021-11-07 08:30:07,722 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:07,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:07,723 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:07,726 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-07 08:30:07,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-11-07 08:30:07,734 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 08:30:07,734 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-07 08:30:07,734 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 08:30:07,734 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 08:30:07,734 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2021-11-07 08:30:07,736 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2021-11-07 08:30:07,736 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-07 08:30:07,739 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-07 08:30:07,744 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2021-11-07 08:30:07,744 INFO L444 ModelExtractionUtils]: 3 out of 9 variables were initially zero. Simplification set additionally 2 variables to zero. [2021-11-07 08:30:07,744 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:07,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:07,745 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:07,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2021-11-07 08:30:07,746 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-07 08:30:07,746 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-07 08:30:07,746 INFO L513 LassoAnalysis]: Proved termination. [2021-11-07 08:30:07,746 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*ULTIMATE.start_main_~x~0 f1 = 1*ULTIMATE.start_main_~x~0 + 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2021-11-07 08:30:07,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2021-11-07 08:30:07,766 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-07 08:30:07,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:30:07,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:30:07,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 08:30:07,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:30:07,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:30:07,830 WARN L261 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 08:30:07,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:30:08,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:30:08,009 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-11-07 08:30:08,010 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 12 Second operand has 4 states, 4 states have (on average 2.5) 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) [2021-11-07 08:30:08,037 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 12. Second operand has 4 states, 4 states have (on average 2.5) 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) Result 26 states and 37 transitions. Complement of second has 7 states. [2021-11-07 08:30:08,038 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 [2021-11-07 08:30:08,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) 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) [2021-11-07 08:30:08,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2021-11-07 08:30:08,039 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 8 letters. Loop has 3 letters. [2021-11-07 08:30:08,039 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 08:30:08,039 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-07 08:30:08,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:30:08,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:30:08,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 08:30:08,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:30:08,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:30:08,116 WARN L261 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 08:30:08,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:30:08,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-11-07 08:30:08,293 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Ended with exit code 0 [2021-11-07 08:30:08,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:30:08,340 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 [2021-11-07 08:30:08,340 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 12 Second operand has 4 states, 4 states have (on average 2.5) 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) [2021-11-07 08:30:08,366 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 12. Second operand has 4 states, 4 states have (on average 2.5) 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) Result 24 states and 32 transitions. Complement of second has 7 states. [2021-11-07 08:30:08,366 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 [2021-11-07 08:30:08,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) 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) [2021-11-07 08:30:08,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2021-11-07 08:30:08,367 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 8 letters. Loop has 3 letters. [2021-11-07 08:30:08,367 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 08:30:08,368 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-07 08:30:08,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:30:08,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:30:08,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 08:30:08,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:30:08,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:30:08,415 WARN L261 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 08:30:08,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:30:08,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:30:08,573 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 [2021-11-07 08:30:08,573 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 12 Second operand has 4 states, 4 states have (on average 2.5) 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) [2021-11-07 08:30:08,599 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 12. Second operand has 4 states, 4 states have (on average 2.5) 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) Result 31 states and 43 transitions. Complement of second has 6 states. [2021-11-07 08:30:08,600 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 [2021-11-07 08:30:08,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) 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) [2021-11-07 08:30:08,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2021-11-07 08:30:08,600 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 8 letters. Loop has 3 letters. [2021-11-07 08:30:08,601 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 08:30:08,601 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 11 letters. Loop has 3 letters. [2021-11-07 08:30:08,601 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 08:30:08,601 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 8 letters. Loop has 6 letters. [2021-11-07 08:30:08,602 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 08:30:08,602 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 43 transitions. [2021-11-07 08:30:08,603 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-11-07 08:30:08,604 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 24 states and 34 transitions. [2021-11-07 08:30:08,604 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-11-07 08:30:08,604 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-11-07 08:30:08,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 34 transitions. [2021-11-07 08:30:08,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-07 08:30:08,604 INFO L681 BuchiCegarLoop]: Abstraction has 24 states and 34 transitions. [2021-11-07 08:30:08,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 34 transitions. [2021-11-07 08:30:08,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 19. [2021-11-07 08:30:08,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 18 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) [2021-11-07 08:30:08,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 27 transitions. [2021-11-07 08:30:08,607 INFO L704 BuchiCegarLoop]: Abstraction has 19 states and 27 transitions. [2021-11-07 08:30:08,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:30:08,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 08:30:08,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-07 08:30:08,611 INFO L87 Difference]: Start difference. First operand 19 states and 27 transitions. Second operand has 8 states, 7 states have (on average 2.0) 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) [2021-11-07 08:30:08,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:30:08,712 INFO L93 Difference]: Finished difference Result 21 states and 28 transitions. [2021-11-07 08:30:08,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 08:30:08,713 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 28 transitions. [2021-11-07 08:30:08,714 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-11-07 08:30:08,715 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 21 states and 28 transitions. [2021-11-07 08:30:08,715 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-11-07 08:30:08,715 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-11-07 08:30:08,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 28 transitions. [2021-11-07 08:30:08,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-07 08:30:08,716 INFO L681 BuchiCegarLoop]: Abstraction has 21 states and 28 transitions. [2021-11-07 08:30:08,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 28 transitions. [2021-11-07 08:30:08,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2021-11-07 08:30:08,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 17 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) [2021-11-07 08:30:08,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 25 transitions. [2021-11-07 08:30:08,718 INFO L704 BuchiCegarLoop]: Abstraction has 18 states and 25 transitions. [2021-11-07 08:30:08,718 INFO L587 BuchiCegarLoop]: Abstraction has 18 states and 25 transitions. [2021-11-07 08:30:08,718 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-11-07 08:30:08,719 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 25 transitions. [2021-11-07 08:30:08,719 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-11-07 08:30:08,719 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-07 08:30:08,719 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-07 08:30:08,720 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2021-11-07 08:30:08,720 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-11-07 08:30:08,720 INFO L791 eck$LassoCheckResult]: Stem: 778#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 779#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 783#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 788#L24-2 assume !(main_~y~0 < main_~z~0); 786#L24-3 main_~y~0 := main_~x~0 + main_~y~0; 787#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 790#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 792#L24-2 assume !(main_~y~0 < main_~z~0); 784#L24-3 [2021-11-07 08:30:08,720 INFO L793 eck$LassoCheckResult]: Loop: 784#L24-3 main_~y~0 := main_~x~0 + main_~y~0; 785#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 793#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 792#L24-2 assume !(main_~y~0 < main_~z~0); 784#L24-3 [2021-11-07 08:30:08,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:30:08,721 INFO L85 PathProgramCache]: Analyzing trace with hash -418159556, now seen corresponding path program 6 times [2021-11-07 08:30:08,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:30:08,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983087087] [2021-11-07 08:30:08,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:30:08,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:30:08,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:30:08,727 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:30:08,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:30:08,733 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:30:08,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:30:08,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1711282, now seen corresponding path program 1 times [2021-11-07 08:30:08,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:30:08,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401733733] [2021-11-07 08:30:08,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:30:08,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:30:08,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:30:08,746 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:30:08,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:30:08,757 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:30:08,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:30:08,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1441076371, now seen corresponding path program 7 times [2021-11-07 08:30:08,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:30:08,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205897422] [2021-11-07 08:30:08,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:30:08,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:30:08,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:30:08,767 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:30:08,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:30:08,781 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:30:08,814 INFO L210 LassoAnalysis]: Preferences: [2021-11-07 08:30:08,815 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-07 08:30:08,815 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-07 08:30:08,815 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-07 08:30:08,815 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-07 08:30:08,815 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:08,815 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-07 08:30:08,815 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-07 08:30:08,816 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration6_Loop [2021-11-07 08:30:08,816 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-07 08:30:08,816 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-07 08:30:08,817 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:30:08,821 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:30:08,823 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:30:08,885 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-07 08:30:08,886 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-07 08:30:08,886 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:08,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:08,887 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:08,889 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-07 08:30:08,889 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 08:30:08,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-11-07 08:30:08,917 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-07 08:30:08,917 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-07 08:30:08,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2021-11-07 08:30:08,950 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:08,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:08,950 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:08,952 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-07 08:30:08,952 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 08:30:08,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-11-07 08:30:08,965 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-07 08:30:08,965 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-07 08:30:08,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2021-11-07 08:30:08,985 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:08,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:08,985 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:09,011 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-07 08:30:09,011 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 08:30:09,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-11-07 08:30:09,077 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Ended with exit code 0 [2021-11-07 08:30:09,077 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:09,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:09,078 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:09,083 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-07 08:30:09,083 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 08:30:09,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-11-07 08:30:09,800 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-07 08:30:09,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2021-11-07 08:30:09,803 INFO L210 LassoAnalysis]: Preferences: [2021-11-07 08:30:09,803 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-07 08:30:09,803 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-07 08:30:09,803 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-07 08:30:09,803 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-07 08:30:09,803 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:09,803 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-07 08:30:09,804 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-07 08:30:09,804 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration6_Loop [2021-11-07 08:30:09,804 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-07 08:30:09,804 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-07 08:30:09,804 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:30:09,812 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:30:09,815 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:30:09,877 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-07 08:30:09,877 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-07 08:30:09,878 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:09,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:09,878 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:09,880 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-07 08:30:09,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2021-11-07 08:30:09,887 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 08:30:09,887 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 08:30:09,887 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 08:30:09,887 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-07 08:30:09,889 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-07 08:30:09,889 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-07 08:30:09,918 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-07 08:30:09,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2021-11-07 08:30:09,955 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:09,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:09,956 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:09,959 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-07 08:30:09,968 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 08:30:09,968 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 08:30:09,968 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 08:30:09,968 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-07 08:30:09,970 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-07 08:30:09,970 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-07 08:30:09,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2021-11-07 08:30:09,982 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-07 08:30:10,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Forceful destruction successful, exit code 0 [2021-11-07 08:30:10,018 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:10,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:10,019 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:10,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2021-11-07 08:30:10,023 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-07 08:30:10,032 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 08:30:10,032 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-07 08:30:10,032 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 08:30:10,032 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 08:30:10,032 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-07 08:30:10,044 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-07 08:30:10,044 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-07 08:30:10,052 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-07 08:30:10,055 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-07 08:30:10,055 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-07 08:30:10,055 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:10,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:10,056 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:10,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2021-11-07 08:30:10,057 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-07 08:30:10,057 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-07 08:30:10,057 INFO L513 LassoAnalysis]: Proved termination. [2021-11-07 08:30:10,057 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0) = 1*ULTIMATE.start_main_~z~0 Supporting invariants [] [2021-11-07 08:30:10,076 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Ended with exit code 0 [2021-11-07 08:30:10,077 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-07 08:30:10,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:30:10,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:30:10,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 08:30:10,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:30:10,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:30:10,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 08:30:10,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:30:10,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Forceful destruction successful, exit code 0 [2021-11-07 08:30:10,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:30:10,216 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-11-07 08:30:10,216 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 25 transitions. cyclomatic complexity: 11 Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:30:10,230 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 25 transitions. cyclomatic complexity: 11. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 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 35 states and 50 transitions. Complement of second has 6 states. [2021-11-07 08:30:10,232 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 [2021-11-07 08:30:10,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:30:10,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2021-11-07 08:30:10,233 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 8 letters. Loop has 4 letters. [2021-11-07 08:30:10,233 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 08:30:10,233 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 12 letters. Loop has 4 letters. [2021-11-07 08:30:10,233 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 08:30:10,233 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 8 letters. Loop has 8 letters. [2021-11-07 08:30:10,233 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 08:30:10,234 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 50 transitions. [2021-11-07 08:30:10,234 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-07 08:30:10,235 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 0 states and 0 transitions. [2021-11-07 08:30:10,235 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-11-07 08:30:10,235 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-11-07 08:30:10,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-11-07 08:30:10,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:30:10,235 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 08:30:10,235 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 08:30:10,235 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 08:30:10,235 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-11-07 08:30:10,236 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-11-07 08:30:10,236 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-07 08:30:10,236 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-11-07 08:30:10,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.11 08:30:10 BoogieIcfgContainer [2021-11-07 08:30:10,241 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-07 08:30:10,242 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 08:30:10,242 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 08:30:10,242 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 08:30:10,242 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:30:01" (3/4) ... [2021-11-07 08:30:10,245 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-07 08:30:10,245 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 08:30:10,247 INFO L168 Benchmark]: Toolchain (without parser) took 9031.30 ms. Allocated memory was 104.9 MB in the beginning and 146.8 MB in the end (delta: 41.9 MB). Free memory was 65.9 MB in the beginning and 111.4 MB in the end (delta: -45.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 08:30:10,247 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 104.9 MB. Free memory is still 82.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 08:30:10,247 INFO L168 Benchmark]: CACSL2BoogieTranslator took 241.72 ms. Allocated memory is still 104.9 MB. Free memory was 65.8 MB in the beginning and 81.9 MB in the end (delta: -16.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 08:30:10,248 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.05 ms. Allocated memory is still 104.9 MB. Free memory was 81.5 MB in the beginning and 80.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 08:30:10,248 INFO L168 Benchmark]: Boogie Preprocessor took 18.23 ms. Allocated memory is still 104.9 MB. Free memory was 80.3 MB in the beginning and 79.4 MB in the end (delta: 933.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 08:30:10,249 INFO L168 Benchmark]: RCFGBuilder took 273.97 ms. Allocated memory is still 104.9 MB. Free memory was 79.4 MB in the beginning and 71.4 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 08:30:10,249 INFO L168 Benchmark]: BuchiAutomizer took 8457.33 ms. Allocated memory was 104.9 MB in the beginning and 146.8 MB in the end (delta: 41.9 MB). Free memory was 71.0 MB in the beginning and 112.4 MB in the end (delta: -41.4 MB). Peak memory consumption was 1.3 MB. Max. memory is 16.1 GB. [2021-11-07 08:30:10,249 INFO L168 Benchmark]: Witness Printer took 3.79 ms. Allocated memory is still 146.8 MB. Free memory is still 111.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 08:30:10,251 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 104.9 MB. Free memory is still 82.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 241.72 ms. Allocated memory is still 104.9 MB. Free memory was 65.8 MB in the beginning and 81.9 MB in the end (delta: -16.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 30.05 ms. Allocated memory is still 104.9 MB. Free memory was 81.5 MB in the beginning and 80.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.23 ms. Allocated memory is still 104.9 MB. Free memory was 80.3 MB in the beginning and 79.4 MB in the end (delta: 933.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 273.97 ms. Allocated memory is still 104.9 MB. Free memory was 79.4 MB in the beginning and 71.4 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 8457.33 ms. Allocated memory was 104.9 MB in the beginning and 146.8 MB in the end (delta: 41.9 MB). Free memory was 71.0 MB in the beginning and 112.4 MB in the end (delta: -41.4 MB). Peak memory consumption was 1.3 MB. Max. memory is 16.1 GB. * Witness Printer took 3.79 ms. Allocated memory is still 146.8 MB. Free memory is still 111.4 MB. There was no memory consumed. 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 7 terminating modules (1 trivial, 4 deterministic, 2 nondeterministic). One deterministic module has 2-nested ranking function (if x > 0 then 1 else 0), (if x > 0 then x else y) and consists of 5 locations. One deterministic module has affine ranking function z + -1 * y and consists of 4 locations. One deterministic module has 2-nested ranking function (if x > 0 then 1 else 0), (if x > 0 then x else y + x) and consists of 5 locations. One deterministic module has affine ranking function z and consists of 4 locations. One nondeterministic module has affine ranking function z + -1 * y and consists of 4 locations. One nondeterministic module has 2-nested ranking function (if x > 0 then 1 else 0), (if x > 0 then x else y + x) and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 8.3s and 7 iterations. TraceHistogramMax:2. Analysis of lassos took 6.1s. Construction of modules took 0.1s. Büchi inclusion checks took 1.9s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 6. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 17 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 18 states and ocurred in iteration 3. Nontrivial modules had stage [4, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/1 HoareTripleCheckerStatistics: 66 SDtfs, 67 SDslu, 8 SDs, 0 SdLazy, 139 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT5 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax168 hnf100 lsp53 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq164 hnf93 smp97 dnf100 smp100 tf109 neg100 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 62ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 3 MotzkinApplications: 9 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 10 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 2.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-11-07 08:30:10,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-11-07 08:30:10,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb7cd1dd-b4ae-4ddd-bdab-ed512dead7b1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE