./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/MinusUserDefined.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_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/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_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/MinusUserDefined.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/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_032d228e-2c70-49bd-8d27-ed6541268ed2/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 096bafbba8d51323312e8aef69baa45c66c17c65b2ec8717873d6ff292690721 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 08:03:42,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 08:03:42,702 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 08:03:42,767 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 08:03:42,767 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 08:03:42,769 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 08:03:42,772 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 08:03:42,775 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 08:03:42,777 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 08:03:42,779 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 08:03:42,781 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 08:03:42,783 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 08:03:42,783 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 08:03:42,785 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 08:03:42,787 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 08:03:42,789 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 08:03:42,791 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 08:03:42,792 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 08:03:42,795 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 08:03:42,798 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 08:03:42,800 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 08:03:42,802 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 08:03:42,804 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 08:03:42,806 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 08:03:42,810 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 08:03:42,811 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 08:03:42,812 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 08:03:42,813 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 08:03:42,814 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 08:03:42,816 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 08:03:42,816 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 08:03:42,817 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 08:03:42,819 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 08:03:42,820 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 08:03:42,822 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 08:03:42,822 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 08:03:42,824 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 08:03:42,824 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 08:03:42,825 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 08:03:42,826 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 08:03:42,827 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 08:03:42,829 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-11-07 08:03:42,862 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 08:03:42,862 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 08:03:42,862 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 08:03:42,863 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 08:03:42,864 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 08:03:42,865 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 08:03:42,865 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 08:03:42,865 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-07 08:03:42,866 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-07 08:03:42,866 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-07 08:03:42,866 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-07 08:03:42,866 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-07 08:03:42,867 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-07 08:03:42,867 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 08:03:42,867 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 08:03:42,868 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 08:03:42,868 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 08:03:42,868 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-07 08:03:42,869 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-07 08:03:42,869 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-07 08:03:42,869 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 08:03:42,869 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-07 08:03:42,870 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 08:03:42,870 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-07 08:03:42,870 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 08:03:42,871 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 08:03:42,871 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 08:03:42,871 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 08:03:42,872 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 08:03:42,873 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-07 08:03:42,873 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_032d228e-2c70-49bd-8d27-ed6541268ed2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 096bafbba8d51323312e8aef69baa45c66c17c65b2ec8717873d6ff292690721 [2021-11-07 08:03:43,169 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 08:03:43,205 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 08:03:43,208 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 08:03:43,210 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 08:03:43,211 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 08:03:43,212 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/termination-restricted-15/MinusUserDefined.c [2021-11-07 08:03:43,308 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/data/1a465b9b7/88a01013c7da4d80b07ad286f0af2c09/FLAG60cea6156 [2021-11-07 08:03:43,823 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 08:03:43,824 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/sv-benchmarks/c/termination-restricted-15/MinusUserDefined.c [2021-11-07 08:03:43,833 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/data/1a465b9b7/88a01013c7da4d80b07ad286f0af2c09/FLAG60cea6156 [2021-11-07 08:03:44,221 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/data/1a465b9b7/88a01013c7da4d80b07ad286f0af2c09 [2021-11-07 08:03:44,225 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 08:03:44,227 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 08:03:44,229 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 08:03:44,229 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 08:03:44,233 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 08:03:44,234 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:03:44" (1/1) ... [2021-11-07 08:03:44,252 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c671496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:03:44, skipping insertion in model container [2021-11-07 08:03:44,252 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:03:44" (1/1) ... [2021-11-07 08:03:44,259 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 08:03:44,274 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 08:03:44,424 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:03:44,428 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 08:03:44,461 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:03:44,478 INFO L208 MainTranslator]: Completed translation [2021-11-07 08:03:44,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:03:44 WrapperNode [2021-11-07 08:03:44,479 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 08:03:44,481 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 08:03:44,481 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 08:03:44,482 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 08:03:44,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:03:44" (1/1) ... [2021-11-07 08:03:44,506 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:03:44" (1/1) ... [2021-11-07 08:03:44,533 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 08:03:44,534 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 08:03:44,534 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 08:03:44,534 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 08:03:44,543 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:03:44" (1/1) ... [2021-11-07 08:03:44,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:03:44" (1/1) ... [2021-11-07 08:03:44,545 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:03:44" (1/1) ... [2021-11-07 08:03:44,545 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:03:44" (1/1) ... [2021-11-07 08:03:44,550 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:03:44" (1/1) ... [2021-11-07 08:03:44,554 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:03:44" (1/1) ... [2021-11-07 08:03:44,556 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:03:44" (1/1) ... [2021-11-07 08:03:44,568 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 08:03:44,569 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 08:03:44,570 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 08:03:44,571 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 08:03:44,573 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:03:44" (1/1) ... [2021-11-07 08:03:44,581 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:03:44,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:03:44,621 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:03:44,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-07 08:03:44,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 08:03:44,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 08:03:44,867 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 08:03:44,868 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-07 08:03:44,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:03:44 BoogieIcfgContainer [2021-11-07 08:03:44,871 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 08:03:44,874 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-07 08:03:44,875 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-07 08:03:44,878 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-07 08:03:44,879 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-07 08:03:44,880 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.11 08:03:44" (1/3) ... [2021-11-07 08:03:44,881 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@611ebf82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.11 08:03:44, skipping insertion in model container [2021-11-07 08:03:44,881 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-07 08:03:44,882 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:03:44" (2/3) ... [2021-11-07 08:03:44,883 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@611ebf82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.11 08:03:44, skipping insertion in model container [2021-11-07 08:03:44,883 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-07 08:03:44,883 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:03:44" (3/3) ... [2021-11-07 08:03:44,885 INFO L389 chiAutomizerObserver]: Analyzing ICFG MinusUserDefined.c [2021-11-07 08:03:44,932 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-07 08:03:44,933 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-07 08:03:44,933 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-07 08:03:44,933 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-07 08:03:44,933 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-07 08:03:44,933 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-07 08:03:44,933 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-07 08:03:44,933 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-07 08:03:44,947 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 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 08:03:44,965 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 3 [2021-11-07 08:03:44,965 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-07 08:03:44,965 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-07 08:03:44,971 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-11-07 08:03:44,971 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-11-07 08:03:44,971 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-07 08:03:44,971 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 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 08:03:44,972 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 3 [2021-11-07 08:03:44,972 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-07 08:03:44,973 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-07 08:03:44,973 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-11-07 08:03:44,973 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-11-07 08:03:44,979 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 8#L13-2true [2021-11-07 08:03:44,980 INFO L793 eck$LassoCheckResult]: Loop: 8#L13-2true assume !!(main_~x~0 > 0 && main_~y~0 > 0);main_~x~0 := main_~x~0 - 1;main_~y~0 := main_~y~0 - 1; 8#L13-2true [2021-11-07 08:03:44,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:03:44,986 INFO L85 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-11-07 08:03:44,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:03:44,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100510060] [2021-11-07 08:03:44,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:03:44,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:03:45,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:03:45,064 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:03:45,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:03:45,080 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:03:45,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:03:45,083 INFO L85 PathProgramCache]: Analyzing trace with hash 41, now seen corresponding path program 1 times [2021-11-07 08:03:45,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:03:45,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655115603] [2021-11-07 08:03:45,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:03:45,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:03:45,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:03:45,092 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:03:45,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:03:45,098 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:03:45,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:03:45,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2021-11-07 08:03:45,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:03:45,101 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735098988] [2021-11-07 08:03:45,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:03:45,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:03:45,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:03:45,109 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:03:45,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:03:45,117 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:03:45,198 INFO L210 LassoAnalysis]: Preferences: [2021-11-07 08:03:45,199 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-07 08:03:45,199 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-07 08:03:45,199 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-07 08:03:45,199 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-07 08:03:45,199 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:03:45,199 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-07 08:03:45,200 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-07 08:03:45,200 INFO L133 ssoRankerPreferences]: Filename of dumped script: MinusUserDefined.c_Iteration1_Loop [2021-11-07 08:03:45,200 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-07 08:03:45,200 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-07 08:03:45,218 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 08:03:45,259 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 08:03:45,263 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 08:03:45,269 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 08:03:45,385 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-07 08:03:45,385 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-07 08:03:45,388 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:03:45,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:03:45,405 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:03:45,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-11-07 08:03:45,411 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-07 08:03:45,411 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 08:03:45,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-11-07 08:03:45,478 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:03:45,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:03:45,480 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:03:45,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-11-07 08:03:45,488 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-07 08:03:45,491 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 08:03:45,548 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-07 08:03:45,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-11-07 08:03:45,558 INFO L210 LassoAnalysis]: Preferences: [2021-11-07 08:03:45,558 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-07 08:03:45,558 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-07 08:03:45,558 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-07 08:03:45,559 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-07 08:03:45,559 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:03:45,559 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-07 08:03:45,559 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-07 08:03:45,559 INFO L133 ssoRankerPreferences]: Filename of dumped script: MinusUserDefined.c_Iteration1_Loop [2021-11-07 08:03:45,559 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-07 08:03:45,559 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-07 08:03:45,561 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 08:03:45,579 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:03:45,586 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 08:03:45,590 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 08:03:45,666 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-07 08:03:45,671 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-07 08:03:45,673 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:03:45,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:03:45,674 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:03:45,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-11-07 08:03:45,677 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 08:03:45,686 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 08:03:45,687 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-07 08:03:45,687 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 08:03:45,687 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 08:03:45,688 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-07 08:03:45,691 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-07 08:03:45,691 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-07 08:03:45,704 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-07 08:03:45,724 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-11-07 08:03:45,724 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-07 08:03:45,726 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:03:45,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:03:45,730 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:03:45,753 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-07 08:03:45,754 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-07 08:03:45,754 INFO L513 LassoAnalysis]: Proved termination. [2021-11-07 08:03:45,755 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2021-11-07 08:03:45,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-11-07 08:03:45,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-11-07 08:03:45,802 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-07 08:03:45,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:03:45,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:03:45,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 08:03:45,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:03:45,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:03:45,878 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 08:03:45,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:03:45,880 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 08:03:45,902 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 08:03:45,904 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 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 2 states, 2 states have (on average 1.0) internal successors, (2), 1 states have internal predecessors, (2), 0 states have call successors, (0), 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 08:03:45,982 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 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 2 states, 2 states have (on average 1.0) internal successors, (2), 1 states have internal predecessors, (2), 0 states have call successors, (0), 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 23 states and 39 transitions. Complement of second has 5 states. [2021-11-07 08:03:45,982 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 08:03:45,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 1.0) internal successors, (2), 1 states have internal predecessors, (2), 0 states have call successors, (0), 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 08:03:45,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 25 transitions. [2021-11-07 08:03:45,988 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 1 letters. Loop has 1 letters. [2021-11-07 08:03:45,989 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 08:03:45,989 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 2 letters. Loop has 1 letters. [2021-11-07 08:03:45,990 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 08:03:45,990 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 1 letters. Loop has 2 letters. [2021-11-07 08:03:45,991 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 08:03:45,992 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 39 transitions. [2021-11-07 08:03:45,998 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-07 08:03:46,002 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 9 states and 16 transitions. [2021-11-07 08:03:46,003 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2021-11-07 08:03:46,003 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2021-11-07 08:03:46,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 16 transitions. [2021-11-07 08:03:46,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-07 08:03:46,004 INFO L681 BuchiCegarLoop]: Abstraction has 9 states and 16 transitions. [2021-11-07 08:03:46,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 16 transitions. [2021-11-07 08:03:46,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2021-11-07 08:03:46,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 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 08:03:46,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 15 transitions. [2021-11-07 08:03:46,027 INFO L704 BuchiCegarLoop]: Abstraction has 8 states and 15 transitions. [2021-11-07 08:03:46,027 INFO L587 BuchiCegarLoop]: Abstraction has 8 states and 15 transitions. [2021-11-07 08:03:46,027 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-07 08:03:46,027 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 15 transitions. [2021-11-07 08:03:46,028 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-07 08:03:46,028 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-07 08:03:46,028 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-07 08:03:46,029 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-07 08:03:46,029 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-07 08:03:46,029 INFO L791 eck$LassoCheckResult]: Stem: 64#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 65#L13-2 assume !(main_~x~0 > 0 && main_~y~0 > 0); 60#L21-3 [2021-11-07 08:03:46,029 INFO L793 eck$LassoCheckResult]: Loop: 60#L21-3 assume !!(main_~x~0 > 0);main_~y~0 := 1 + main_~y~0;main_~res~0 := 1 + main_~res~0; 61#L21-2 assume !(main_~x~0 > 0 && main_~y~0 > 0); 60#L21-3 [2021-11-07 08:03:46,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:03:46,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1000, now seen corresponding path program 1 times [2021-11-07 08:03:46,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:03:46,031 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170088651] [2021-11-07 08:03:46,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:03:46,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:03:46,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:03:46,038 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:03:46,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:03:46,043 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:03:46,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:03:46,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1640, now seen corresponding path program 1 times [2021-11-07 08:03:46,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:03:46,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380141421] [2021-11-07 08:03:46,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:03:46,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:03:46,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:03:46,054 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:03:46,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:03:46,061 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:03:46,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:03:46,062 INFO L85 PathProgramCache]: Analyzing trace with hash 961679, now seen corresponding path program 1 times [2021-11-07 08:03:46,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:03:46,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824841303] [2021-11-07 08:03:46,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:03:46,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:03:46,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:03:46,070 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:03:46,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:03:46,079 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:03:46,156 INFO L210 LassoAnalysis]: Preferences: [2021-11-07 08:03:46,156 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-07 08:03:46,156 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-07 08:03:46,157 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-07 08:03:46,157 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-07 08:03:46,157 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:03:46,157 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-07 08:03:46,157 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-07 08:03:46,157 INFO L133 ssoRankerPreferences]: Filename of dumped script: MinusUserDefined.c_Iteration2_Loop [2021-11-07 08:03:46,157 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-07 08:03:46,157 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-07 08:03:46,159 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 08:03:46,167 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:03:46,174 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 08:03:46,178 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 08:03:46,185 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 08:03:46,254 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-07 08:03:46,254 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-07 08:03:46,255 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:03:46,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:03:46,256 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:03:46,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-11-07 08:03:46,262 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-07 08:03:46,263 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 08:03:46,283 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-07 08:03:46,283 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 08:03:46,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-11-07 08:03:46,313 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:03:46,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:03:46,314 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:03:46,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-11-07 08:03:46,320 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-07 08:03:46,320 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 08:03:46,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-11-07 08:03:46,378 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:03:46,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:03:46,379 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:03:46,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-11-07 08:03:46,382 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-07 08:03:46,382 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 08:03:46,492 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-07 08:03:46,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-11-07 08:03:46,504 INFO L210 LassoAnalysis]: Preferences: [2021-11-07 08:03:46,504 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-07 08:03:46,504 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-07 08:03:46,504 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-07 08:03:46,504 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-07 08:03:46,504 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:03:46,504 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-07 08:03:46,504 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-07 08:03:46,504 INFO L133 ssoRankerPreferences]: Filename of dumped script: MinusUserDefined.c_Iteration2_Loop [2021-11-07 08:03:46,505 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-07 08:03:46,505 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-07 08:03:46,506 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 08:03:46,510 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 08:03:46,525 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 08:03:46,542 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 08:03:46,545 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:03:46,663 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-07 08:03:46,663 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-07 08:03:46,663 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:03:46,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:03:46,670 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:03:46,675 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2021-11-07 08:03:46,681 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 08:03:46,692 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 08:03:46,692 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 08:03:46,692 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 08:03:46,692 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-07 08:03:46,698 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-07 08:03:46,698 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-07 08:03:46,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-11-07 08:03:46,713 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-07 08:03:46,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-11-07 08:03:46,754 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:03:46,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:03:46,756 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:03:46,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-11-07 08:03:46,763 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-07 08:03:46,773 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 08:03:46,773 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-07 08:03:46,773 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 08:03:46,774 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 08:03:46,774 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-07 08:03:46,776 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-07 08:03:46,777 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-07 08:03:46,791 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-07 08:03:46,795 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-07 08:03:46,795 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-07 08:03:46,795 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:03:46,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:03:46,796 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:03:46,802 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-07 08:03:46,802 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-07 08:03:46,802 INFO L513 LassoAnalysis]: Proved termination. [2021-11-07 08:03:46,803 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = -1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2021-11-07 08:03:46,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-11-07 08:03:46,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-11-07 08:03:46,849 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-07 08:03:46,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:03:46,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:03:46,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 08:03:46,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:03:46,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:03:46,884 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 08:03:46,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:03:46,952 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 08:03:46,953 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 08:03:46,953 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 15 transitions. cyclomatic complexity: 10 Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:03:46,975 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 15 transitions. cyclomatic complexity: 10. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 22 states and 34 transitions. Complement of second has 7 states. [2021-11-07 08:03:46,975 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 08:03:46,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:03:46,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2021-11-07 08:03:46,976 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 2 letters. [2021-11-07 08:03:46,976 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 08:03:46,976 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 4 letters. Loop has 2 letters. [2021-11-07 08:03:46,977 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 08:03:46,977 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 4 letters. [2021-11-07 08:03:46,977 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 08:03:46,977 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 34 transitions. [2021-11-07 08:03:46,979 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-07 08:03:46,979 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 15 states and 23 transitions. [2021-11-07 08:03:46,979 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2021-11-07 08:03:46,980 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2021-11-07 08:03:46,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 23 transitions. [2021-11-07 08:03:46,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-07 08:03:46,980 INFO L681 BuchiCegarLoop]: Abstraction has 15 states and 23 transitions. [2021-11-07 08:03:46,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 23 transitions. [2021-11-07 08:03:46,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-07 08:03:46,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 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 08:03:46,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 23 transitions. [2021-11-07 08:03:46,982 INFO L704 BuchiCegarLoop]: Abstraction has 15 states and 23 transitions. [2021-11-07 08:03:46,982 INFO L587 BuchiCegarLoop]: Abstraction has 15 states and 23 transitions. [2021-11-07 08:03:46,982 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-11-07 08:03:46,983 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 23 transitions. [2021-11-07 08:03:46,983 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-07 08:03:46,983 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-07 08:03:46,984 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-07 08:03:46,984 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2021-11-07 08:03:46,984 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-07 08:03:46,984 INFO L791 eck$LassoCheckResult]: Stem: 130#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 131#L13-2 assume !(main_~x~0 > 0 && main_~y~0 > 0); 132#L21-3 assume !!(main_~x~0 > 0);main_~y~0 := 1 + main_~y~0;main_~res~0 := 1 + main_~res~0; 140#L21-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0);main_~x~0 := main_~x~0 - 1;main_~y~0 := main_~y~0 - 1; 137#L21-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0);main_~x~0 := main_~x~0 - 1;main_~y~0 := main_~y~0 - 1; 135#L21-2 assume !(main_~x~0 > 0 && main_~y~0 > 0); 126#L21-3 [2021-11-07 08:03:46,984 INFO L793 eck$LassoCheckResult]: Loop: 126#L21-3 assume !!(main_~x~0 > 0);main_~y~0 := 1 + main_~y~0;main_~res~0 := 1 + main_~res~0; 127#L21-2 assume !(main_~x~0 > 0 && main_~y~0 > 0); 126#L21-3 [2021-11-07 08:03:46,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:03:46,985 INFO L85 PathProgramCache]: Analyzing trace with hash 924176399, now seen corresponding path program 1 times [2021-11-07 08:03:46,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:03:46,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919919239] [2021-11-07 08:03:46,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:03:46,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:03:46,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:03:47,050 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:03:47,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:03:47,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919919239] [2021-11-07 08:03:47,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919919239] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:03:47,052 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:03:47,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 08:03:47,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476054573] [2021-11-07 08:03:47,055 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-07 08:03:47,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:03:47,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1640, now seen corresponding path program 2 times [2021-11-07 08:03:47,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:03:47,056 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710113403] [2021-11-07 08:03:47,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:03:47,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:03:47,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:03:47,062 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:03:47,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:03:47,067 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:03:47,105 INFO L210 LassoAnalysis]: Preferences: [2021-11-07 08:03:47,105 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-07 08:03:47,105 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-07 08:03:47,105 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-07 08:03:47,105 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-07 08:03:47,105 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:03:47,106 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-07 08:03:47,106 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-07 08:03:47,106 INFO L133 ssoRankerPreferences]: Filename of dumped script: MinusUserDefined.c_Iteration3_Loop [2021-11-07 08:03:47,106 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-07 08:03:47,106 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-07 08:03:47,107 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 08:03:47,111 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 08:03:47,116 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:03:47,119 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:03:47,122 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 08:03:47,180 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-07 08:03:47,180 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-07 08:03:47,181 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:03:47,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:03:47,193 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:03:47,200 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-07 08:03:47,200 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 08:03:47,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-11-07 08:03:47,236 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-07 08:03:47,236 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 08:03:47,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-11-07 08:03:47,273 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:03:47,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:03:47,275 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:03:47,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-11-07 08:03:47,285 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-07 08:03:47,285 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 08:03:47,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-11-07 08:03:47,351 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:03:47,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:03:47,353 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:03:47,359 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-07 08:03:47,360 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 08:03:47,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-11-07 08:03:47,464 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-07 08:03:47,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-11-07 08:03:47,468 INFO L210 LassoAnalysis]: Preferences: [2021-11-07 08:03:47,468 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-07 08:03:47,468 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-07 08:03:47,468 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-07 08:03:47,468 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-07 08:03:47,468 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:03:47,468 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-07 08:03:47,468 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-07 08:03:47,468 INFO L133 ssoRankerPreferences]: Filename of dumped script: MinusUserDefined.c_Iteration3_Loop [2021-11-07 08:03:47,468 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-07 08:03:47,469 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-07 08:03:47,470 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 08:03:47,476 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 08:03:47,486 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:03:47,489 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:03:47,495 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 08:03:47,549 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-07 08:03:47,549 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-07 08:03:47,550 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:03:47,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:03:47,551 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:03:47,568 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 08:03:47,578 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 08:03:47,578 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 08:03:47,578 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 08:03:47,579 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-07 08:03:47,582 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-07 08:03:47,582 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-07 08:03:47,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-11-07 08:03:47,598 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-07 08:03:47,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-11-07 08:03:47,642 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:03:47,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:03:47,644 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:03:47,656 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 08:03:47,667 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 08:03:47,667 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-07 08:03:47,667 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 08:03:47,667 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 08:03:47,667 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-07 08:03:47,668 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-07 08:03:47,669 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-07 08:03:47,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-11-07 08:03:47,679 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-07 08:03:47,684 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-11-07 08:03:47,685 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-07 08:03:47,685 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:03:47,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:03:47,687 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:03:47,689 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-07 08:03:47,690 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-07 08:03:47,690 INFO L513 LassoAnalysis]: Proved termination. [2021-11-07 08:03:47,690 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = -1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2021-11-07 08:03:47,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-11-07 08:03:47,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-11-07 08:03:47,733 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-07 08:03:47,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:03:47,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:03:47,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 08:03:47,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:03:47,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:03:47,788 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 08:03:47,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:03:47,833 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 08:03:47,834 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 08:03:47,834 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 23 transitions. cyclomatic complexity: 13 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:03:47,876 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 23 transitions. cyclomatic complexity: 13. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 43 states and 65 transitions. Complement of second has 7 states. [2021-11-07 08:03:47,876 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 08:03:47,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:03:47,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2021-11-07 08:03:47,877 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 6 letters. Loop has 2 letters. [2021-11-07 08:03:47,877 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 08:03:47,877 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 8 letters. Loop has 2 letters. [2021-11-07 08:03:47,878 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 08:03:47,878 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 6 letters. Loop has 4 letters. [2021-11-07 08:03:47,878 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 08:03:47,879 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 65 transitions. [2021-11-07 08:03:47,888 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-07 08:03:47,895 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 30 states and 45 transitions. [2021-11-07 08:03:47,895 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2021-11-07 08:03:47,895 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2021-11-07 08:03:47,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 45 transitions. [2021-11-07 08:03:47,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-07 08:03:47,895 INFO L681 BuchiCegarLoop]: Abstraction has 30 states and 45 transitions. [2021-11-07 08:03:47,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states and 45 transitions. [2021-11-07 08:03:47,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 19. [2021-11-07 08:03:47,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 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 08:03:47,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 30 transitions. [2021-11-07 08:03:47,915 INFO L704 BuchiCegarLoop]: Abstraction has 19 states and 30 transitions. [2021-11-07 08:03:47,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:03:47,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:03:47,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:03:47,919 INFO L87 Difference]: Start difference. First operand 19 states and 30 transitions. Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:03:47,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-11-07 08:03:47,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:03:47,982 INFO L93 Difference]: Finished difference Result 13 states and 18 transitions. [2021-11-07 08:03:47,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 08:03:47,982 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 18 transitions. [2021-11-07 08:03:47,984 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-07 08:03:47,984 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 0 states and 0 transitions. [2021-11-07 08:03:47,984 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-11-07 08:03:47,985 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-11-07 08:03:47,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-11-07 08:03:47,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:03:47,985 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 08:03:47,985 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 08:03:47,985 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 08:03:47,985 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-11-07 08:03:47,985 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-11-07 08:03:47,985 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-07 08:03:47,986 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-11-07 08:03:47,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.11 08:03:47 BoogieIcfgContainer [2021-11-07 08:03:47,992 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-07 08:03:47,993 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 08:03:47,993 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 08:03:47,993 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 08:03:47,994 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:03:44" (3/4) ... [2021-11-07 08:03:47,997 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-07 08:03:47,997 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 08:03:47,999 INFO L168 Benchmark]: Toolchain (without parser) took 3771.15 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 47.7 MB in the beginning and 73.2 MB in the end (delta: -25.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 08:03:48,000 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 83.9 MB. Free memory was 64.0 MB in the beginning and 64.0 MB in the end (delta: 39.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 08:03:48,001 INFO L168 Benchmark]: CACSL2BoogieTranslator took 251.06 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 47.5 MB in the beginning and 78.5 MB in the end (delta: -31.1 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2021-11-07 08:03:48,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-11-07 08:03:48,006 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.92 ms. Allocated memory is still 100.7 MB. Free memory was 78.4 MB in the beginning and 77.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 08:03:48,007 INFO L168 Benchmark]: Boogie Preprocessor took 34.89 ms. Allocated memory is still 100.7 MB. Free memory was 77.1 MB in the beginning and 76.1 MB in the end (delta: 986.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 08:03:48,007 INFO L168 Benchmark]: RCFGBuilder took 301.99 ms. Allocated memory is still 100.7 MB. Free memory was 76.1 MB in the beginning and 68.3 MB in the end (delta: 7.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-07 08:03:48,008 INFO L168 Benchmark]: BuchiAutomizer took 3118.11 ms. Allocated memory is still 100.7 MB. Free memory was 68.1 MB in the beginning and 73.2 MB in the end (delta: -5.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 08:03:48,008 INFO L168 Benchmark]: Witness Printer took 4.19 ms. Allocated memory is still 100.7 MB. Free memory is still 73.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 08:03:48,011 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 83.9 MB. Free memory was 64.0 MB in the beginning and 64.0 MB in the end (delta: 39.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 251.06 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 47.5 MB in the beginning and 78.5 MB in the end (delta: -31.1 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.92 ms. Allocated memory is still 100.7 MB. Free memory was 78.4 MB in the beginning and 77.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.89 ms. Allocated memory is still 100.7 MB. Free memory was 77.1 MB in the beginning and 76.1 MB in the end (delta: 986.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 301.99 ms. Allocated memory is still 100.7 MB. Free memory was 76.1 MB in the beginning and 68.3 MB in the end (delta: 7.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 3118.11 ms. Allocated memory is still 100.7 MB. Free memory was 68.1 MB in the beginning and 73.2 MB in the end (delta: -5.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.19 ms. Allocated memory is still 100.7 MB. Free memory is still 73.2 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 4 terminating modules (1 trivial, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function -1 * y and consists of 4 locations. One deterministic module has affine ranking function -1 * y and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.0s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 2.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 12 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 15 states and ocurred in iteration 2. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 16 SDtfs, 18 SDslu, 3 SDs, 0 SdLazy, 49 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax166 hnf100 lsp33 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie103 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 49ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-11-07 08:03:48,069 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_032d228e-2c70-49bd-8d27-ed6541268ed2/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE