./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt --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 b98f7fd40026cd249d1c292b5307435abc3c32a2 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 01:11:13,602 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 01:11:13,605 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 01:11:13,636 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 01:11:13,638 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 01:11:13,639 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 01:11:13,644 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 01:11:13,649 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 01:11:13,652 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 01:11:13,653 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 01:11:13,654 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 01:11:13,658 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 01:11:13,658 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 01:11:13,666 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 01:11:13,668 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 01:11:13,671 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 01:11:13,674 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 01:11:13,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 01:11:13,679 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 01:11:13,684 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 01:11:13,689 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 01:11:13,690 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 01:11:13,693 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 01:11:13,694 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 01:11:13,704 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 01:11:13,704 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 01:11:13,705 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 01:11:13,706 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 01:11:13,706 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 01:11:13,707 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 01:11:13,708 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 01:11:13,709 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 01:11:13,709 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 01:11:13,710 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 01:11:13,711 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 01:11:13,711 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 01:11:13,712 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 01:11:13,712 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 01:11:13,712 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 01:11:13,713 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 01:11:13,714 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 01:11:13,715 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-13 01:11:13,740 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 01:11:13,740 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 01:11:13,741 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 01:11:13,741 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 01:11:13,742 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 01:11:13,742 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 01:11:13,742 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 01:11:13,742 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-13 01:11:13,743 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-13 01:11:13,743 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-13 01:11:13,743 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-13 01:11:13,743 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-13 01:11:13,743 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-13 01:11:13,744 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 01:11:13,744 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 01:11:13,744 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 01:11:13,744 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 01:11:13,744 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-13 01:11:13,744 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-13 01:11:13,745 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-13 01:11:13,745 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 01:11:13,745 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-13 01:11:13,745 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 01:11:13,745 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-13 01:11:13,746 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 01:11:13,746 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 01:11:13,746 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 01:11:13,746 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 01:11:13,746 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 01:11:13,747 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-13 01:11:13,748 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_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b98f7fd40026cd249d1c292b5307435abc3c32a2 [2021-10-13 01:11:13,999 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 01:11:14,019 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 01:11:14,022 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 01:11:14,023 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 01:11:14,024 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 01:11:14,025 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c [2021-10-13 01:11:14,087 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/data/888bcd340/634fb9827ef84810b0234394ab85226c/FLAG9d0d4331d [2021-10-13 01:11:14,546 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 01:11:14,547 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c [2021-10-13 01:11:14,552 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/data/888bcd340/634fb9827ef84810b0234394ab85226c/FLAG9d0d4331d [2021-10-13 01:11:14,915 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/data/888bcd340/634fb9827ef84810b0234394ab85226c [2021-10-13 01:11:14,917 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 01:11:14,919 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 01:11:14,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 01:11:14,921 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 01:11:14,938 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 01:11:14,938 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:11:14" (1/1) ... [2021-10-13 01:11:14,942 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31ba4eb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:14, skipping insertion in model container [2021-10-13 01:11:14,942 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:11:14" (1/1) ... [2021-10-13 01:11:14,948 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 01:11:14,959 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 01:11:15,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:11:15,101 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 01:11:15,137 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:11:15,152 INFO L208 MainTranslator]: Completed translation [2021-10-13 01:11:15,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:15 WrapperNode [2021-10-13 01:11:15,153 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 01:11:15,154 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 01:11:15,154 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 01:11:15,155 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 01:11:15,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:15" (1/1) ... [2021-10-13 01:11:15,171 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:15" (1/1) ... [2021-10-13 01:11:15,195 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 01:11:15,196 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 01:11:15,197 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 01:11:15,197 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 01:11:15,205 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:15" (1/1) ... [2021-10-13 01:11:15,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:15" (1/1) ... [2021-10-13 01:11:15,208 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:15" (1/1) ... [2021-10-13 01:11:15,209 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:15" (1/1) ... [2021-10-13 01:11:15,218 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:15" (1/1) ... [2021-10-13 01:11:15,223 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:15" (1/1) ... [2021-10-13 01:11:15,224 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:15" (1/1) ... [2021-10-13 01:11:15,225 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 01:11:15,227 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 01:11:15,227 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 01:11:15,227 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 01:11:15,229 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:15" (1/1) ... [2021-10-13 01:11:15,238 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:15,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:15,262 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:15,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-13 01:11:15,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 01:11:15,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 01:11:15,469 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 01:11:15,470 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-13 01:11:15,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:11:15 BoogieIcfgContainer [2021-10-13 01:11:15,472 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 01:11:15,473 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-13 01:11:15,473 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-13 01:11:15,476 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-13 01:11:15,477 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 01:11:15,477 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.10 01:11:14" (1/3) ... [2021-10-13 01:11:15,479 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4bfed39c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.10 01:11:15, skipping insertion in model container [2021-10-13 01:11:15,479 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 01:11:15,479 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:15" (2/3) ... [2021-10-13 01:11:15,479 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4bfed39c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.10 01:11:15, skipping insertion in model container [2021-10-13 01:11:15,480 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 01:11:15,480 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:11:15" (3/3) ... [2021-10-13 01:11:15,481 INFO L389 chiAutomizerObserver]: Analyzing ICFG BrockschmidtCookFuhs-CAV2013-Fig9a.c [2021-10-13 01:11:15,537 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-13 01:11:15,537 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-13 01:11:15,537 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-13 01:11:15,538 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-13 01:11:15,538 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-13 01:11:15,538 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-13 01:11:15,538 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-13 01:11:15,538 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-13 01:11:15,552 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:15,570 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-13 01:11:15,570 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:11:15,570 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:11:15,576 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-13 01:11:15,577 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-13 01:11:15,577 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-13 01:11:15,577 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:15,578 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-13 01:11:15,578 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:11:15,579 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:11:15,579 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-13 01:11:15,579 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-13 01:11:15,586 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~k~0, main_~i~0, main_~j~0, main_~n~0;havoc main_~k~0;havoc main_~i~0;havoc main_~j~0;havoc main_~n~0;main_~k~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~i~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~j~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 10#L20true assume main_~k~0 >= 1;main_~i~0 := 0; 8#L22-2true [2021-10-13 01:11:15,586 INFO L793 eck$LassoCheckResult]: Loop: 8#L22-2true assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 6#L24-2true assume !(main_~j~0 <= main_~i~0); 9#L24-3true main_~i~0 := 1 + main_~i~0; 8#L22-2true [2021-10-13 01:11:15,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:15,593 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2021-10-13 01:11:15,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:11:15,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414428868] [2021-10-13 01:11:15,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:11:15,605 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:11:15,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:15,677 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:11:15,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:15,699 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:11:15,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:15,703 INFO L82 PathProgramCache]: Analyzing trace with hash 42930, now seen corresponding path program 1 times [2021-10-13 01:11:15,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:11:15,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296064680] [2021-10-13 01:11:15,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:11:15,704 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:11:15,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:15,720 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:11:15,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:15,730 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:11:15,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:15,732 INFO L82 PathProgramCache]: Analyzing trace with hash 29684975, now seen corresponding path program 1 times [2021-10-13 01:11:15,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:11:15,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258069107] [2021-10-13 01:11:15,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:11:15,733 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:11:15,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:15,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:11:15,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:11:15,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258069107] [2021-10-13 01:11:15,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258069107] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:11:15,829 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:11:15,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 01:11:15,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886078369] [2021-10-13 01:11:15,925 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:11:15,925 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:11:15,925 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:11:15,926 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:11:15,926 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 01:11:15,926 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:15,926 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:11:15,926 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:11:15,926 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a.c_Iteration1_Loop [2021-10-13 01:11:15,927 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:11:15,927 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:11:15,944 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:15,952 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:15,956 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:16,057 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:11:16,058 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 01:11:16,060 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:16,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:16,066 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:16,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-13 01:11:16,071 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:11:16,071 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:11:16,091 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 01:11:16,091 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 01:11:16,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:16,112 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:16,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:16,114 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:16,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-13 01:11:16,117 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:11:16,118 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:11:16,145 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 01:11:16,145 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 01:11:16,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:16,182 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:16,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:16,184 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:16,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-13 01:11:16,190 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:11:16,190 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:11:16,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:16,246 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:16,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:16,247 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:16,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-13 01:11:16,255 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 01:11:16,255 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:11:16,419 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 01:11:16,425 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2021-10-13 01:11:16,426 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:11:16,426 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:11:16,426 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:11:16,426 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:11:16,426 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 01:11:16,426 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:16,426 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:11:16,427 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:11:16,427 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a.c_Iteration1_Loop [2021-10-13 01:11:16,427 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:11:16,427 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:11:16,429 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:16,434 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:16,437 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:16,492 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:11:16,497 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 01:11:16,498 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:16,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:16,499 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:16,510 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:11:16,520 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:11:16,520 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:11:16,520 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:11:16,520 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:11:16,526 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-13 01:11:16,526 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-13 01:11:16,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-13 01:11:16,550 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:11:16,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:16,587 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:16,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:16,588 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:16,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-13 01:11:16,593 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:11:16,603 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:11:16,603 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:11:16,603 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:11:16,603 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:11:16,627 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-13 01:11:16,627 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-13 01:11:16,649 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:11:16,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:16,686 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:16,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:16,687 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:16,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-13 01:11:16,694 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:11:16,704 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:11:16,704 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:11:16,705 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:11:16,705 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:11:16,705 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:11:16,708 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:11:16,708 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:11:16,721 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 01:11:16,726 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-13 01:11:16,726 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-13 01:11:16,727 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:16,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:16,729 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:16,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-13 01:11:16,730 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 01:11:16,730 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 01:11:16,730 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 01:11:16,730 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-13 01:11:16,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:16,755 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-13 01:11:16,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:16,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:16,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:11:16,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:16,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:16,801 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 01:11:16,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:16,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:11:16,902 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-10-13 01:11:16,903 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:16,992 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 35 states and 53 transitions. Complement of second has 9 states. [2021-10-13 01:11:16,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-10-13 01:11:16,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:16,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 33 transitions. [2021-10-13 01:11:16,998 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 33 transitions. Stem has 2 letters. Loop has 3 letters. [2021-10-13 01:11:16,999 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:16,999 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 33 transitions. Stem has 5 letters. Loop has 3 letters. [2021-10-13 01:11:17,000 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:17,000 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 33 transitions. Stem has 2 letters. Loop has 6 letters. [2021-10-13 01:11:17,000 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:17,001 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 53 transitions. [2021-10-13 01:11:17,008 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-13 01:11:17,013 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 14 states and 19 transitions. [2021-10-13 01:11:17,014 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-10-13 01:11:17,015 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-10-13 01:11:17,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 19 transitions. [2021-10-13 01:11:17,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 01:11:17,016 INFO L681 BuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2021-10-13 01:11:17,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 19 transitions. [2021-10-13 01:11:17,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2021-10-13 01:11:17,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:17,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 18 transitions. [2021-10-13 01:11:17,043 INFO L704 BuchiCegarLoop]: Abstraction has 13 states and 18 transitions. [2021-10-13 01:11:17,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:11:17,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 01:11:17,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:11:17,053 INFO L87 Difference]: Start difference. First operand 13 states and 18 transitions. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:17,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:11:17,081 INFO L93 Difference]: Finished difference Result 11 states and 14 transitions. [2021-10-13 01:11:17,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 01:11:17,082 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 14 transitions. [2021-10-13 01:11:17,085 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-13 01:11:17,086 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 7 states and 8 transitions. [2021-10-13 01:11:17,086 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-10-13 01:11:17,087 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-10-13 01:11:17,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 8 transitions. [2021-10-13 01:11:17,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 01:11:17,087 INFO L681 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2021-10-13 01:11:17,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 8 transitions. [2021-10-13 01:11:17,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2021-10-13 01:11:17,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 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) [2021-10-13 01:11:17,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2021-10-13 01:11:17,090 INFO L704 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2021-10-13 01:11:17,090 INFO L587 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2021-10-13 01:11:17,090 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-13 01:11:17,090 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 7 transitions. [2021-10-13 01:11:17,091 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-13 01:11:17,091 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:11:17,091 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:11:17,092 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-13 01:11:17,095 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-13 01:11:17,096 INFO L791 eck$LassoCheckResult]: Stem: 119#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~k~0, main_~i~0, main_~j~0, main_~n~0;havoc main_~k~0;havoc main_~i~0;havoc main_~j~0;havoc main_~n~0;main_~k~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~i~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~j~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 120#L20 assume main_~k~0 >= 1;main_~i~0 := 0; 124#L22-2 [2021-10-13 01:11:17,096 INFO L793 eck$LassoCheckResult]: Loop: 124#L22-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 121#L24-2 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := main_~j~0 + main_~k~0; 122#L24-2 assume !(main_~j~0 <= main_~i~0); 123#L24-3 main_~i~0 := 1 + main_~i~0; 124#L22-2 [2021-10-13 01:11:17,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:17,098 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 2 times [2021-10-13 01:11:17,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:11:17,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3573555] [2021-10-13 01:11:17,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:11:17,099 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:11:17,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:17,115 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:11:17,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:17,131 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:11:17,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:17,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1332592, now seen corresponding path program 1 times [2021-10-13 01:11:17,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:11:17,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209915833] [2021-10-13 01:11:17,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:11:17,134 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:11:17,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:17,150 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:11:17,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:17,163 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:11:17,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:17,167 INFO L82 PathProgramCache]: Analyzing trace with hash 920235987, now seen corresponding path program 1 times [2021-10-13 01:11:17,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:11:17,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231304419] [2021-10-13 01:11:17,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:11:17,168 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:11:17,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:17,189 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:11:17,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:17,205 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:11:17,274 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:11:17,274 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:11:17,274 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:11:17,274 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:11:17,275 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 01:11:17,276 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:17,276 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:11:17,276 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:11:17,276 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a.c_Iteration2_Loop [2021-10-13 01:11:17,276 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:11:17,276 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:11:17,278 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:17,283 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:17,286 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:17,356 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:11:17,356 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 01:11:17,357 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:17,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:17,359 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:17,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-13 01:11:17,405 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:11:17,405 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:11:17,428 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 01:11:17,428 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 01:11:17,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:17,463 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:17,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:17,464 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:17,470 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:11:17,470 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:11:17,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-13 01:11:17,487 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 01:11:17,488 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 01:11:17,508 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2021-10-13 01:11:17,509 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:17,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:17,510 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:17,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-13 01:11:17,512 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:11:17,512 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:11:17,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:17,547 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:17,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:17,547 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:17,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-13 01:11:17,549 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 01:11:17,549 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:11:17,740 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 01:11:17,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:17,747 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:11:17,747 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:11:17,747 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:11:17,747 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:11:17,747 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 01:11:17,747 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:17,747 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:11:17,748 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:11:17,748 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a.c_Iteration2_Loop [2021-10-13 01:11:17,748 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:11:17,748 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:11:17,749 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:17,753 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:17,755 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:17,821 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:11:17,821 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 01:11:17,821 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:17,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:17,822 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:17,837 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:11:17,847 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:11:17,847 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:11:17,847 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:11:17,847 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:11:17,850 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-13 01:11:17,850 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-13 01:11:17,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-13 01:11:17,869 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:11:17,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:17,905 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:17,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:17,906 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:17,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-13 01:11:17,913 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:11:17,922 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:11:17,922 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:11:17,923 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:11:17,923 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:11:17,925 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-13 01:11:17,926 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-13 01:11:17,949 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:11:17,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:17,987 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:17,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:17,988 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:17,998 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:11:18,008 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:11:18,008 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:11:18,008 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:11:18,008 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:11:18,008 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:11:18,010 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:11:18,010 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:11:18,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-13 01:11:18,029 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 01:11:18,034 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-10-13 01:11:18,034 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-13 01:11:18,035 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:18,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:18,037 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:18,050 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 01:11:18,050 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 01:11:18,050 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 01:11:18,050 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~k~0) = -1*ULTIMATE.start_main_~i~0 + 1*ULTIMATE.start_main_~k~0 Supporting invariants [] [2021-10-13 01:11:18,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-13 01:11:18,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:18,081 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-13 01:11:18,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:18,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:18,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:11:18,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:18,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:18,110 WARN L261 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 01:11:18,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:18,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:11:18,216 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2021-10-13 01:11:18,216 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 2 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) [2021-10-13 01:11:18,266 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 2. 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) Result 17 states and 22 transitions. Complement of second has 10 states. [2021-10-13 01:11:18,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2021-10-13 01:11:18,267 INFO L82 GeneralOperation]: Start removeUnreachable. 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) [2021-10-13 01:11:18,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 11 transitions. [2021-10-13 01:11:18,267 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 11 transitions. Stem has 2 letters. Loop has 4 letters. [2021-10-13 01:11:18,268 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:18,268 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 11 transitions. Stem has 6 letters. Loop has 4 letters. [2021-10-13 01:11:18,268 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:18,268 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 11 transitions. Stem has 2 letters. Loop has 8 letters. [2021-10-13 01:11:18,269 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:18,269 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 22 transitions. [2021-10-13 01:11:18,272 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-13 01:11:18,283 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 16 states and 21 transitions. [2021-10-13 01:11:18,283 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-10-13 01:11:18,284 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2021-10-13 01:11:18,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 21 transitions. [2021-10-13 01:11:18,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 01:11:18,306 INFO L681 BuchiCegarLoop]: Abstraction has 16 states and 21 transitions. [2021-10-13 01:11:18,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 21 transitions. [2021-10-13 01:11:18,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2021-10-13 01:11:18,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 14 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:18,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 20 transitions. [2021-10-13 01:11:18,326 INFO L704 BuchiCegarLoop]: Abstraction has 15 states and 20 transitions. [2021-10-13 01:11:18,326 INFO L587 BuchiCegarLoop]: Abstraction has 15 states and 20 transitions. [2021-10-13 01:11:18,326 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-13 01:11:18,326 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 20 transitions. [2021-10-13 01:11:18,327 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-13 01:11:18,327 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:11:18,327 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:11:18,327 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-13 01:11:18,328 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1] [2021-10-13 01:11:18,328 INFO L791 eck$LassoCheckResult]: Stem: 192#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~k~0, main_~i~0, main_~j~0, main_~n~0;havoc main_~k~0;havoc main_~i~0;havoc main_~j~0;havoc main_~n~0;main_~k~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~i~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~j~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 193#L20 assume main_~k~0 >= 1;main_~i~0 := 0; 203#L22-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 194#L24-2 [2021-10-13 01:11:18,328 INFO L793 eck$LassoCheckResult]: Loop: 194#L24-2 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := main_~j~0 + main_~k~0; 195#L24-2 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := main_~j~0 + main_~k~0; 204#L24-2 assume !(main_~j~0 <= main_~i~0); 200#L24-3 main_~i~0 := 1 + main_~i~0; 198#L22-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 194#L24-2 [2021-10-13 01:11:18,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:18,328 INFO L82 PathProgramCache]: Analyzing trace with hash 30889, now seen corresponding path program 1 times [2021-10-13 01:11:18,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:11:18,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299106403] [2021-10-13 01:11:18,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:11:18,329 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:11:18,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:18,352 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:11:18,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:18,364 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:11:18,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:18,365 INFO L82 PathProgramCache]: Analyzing trace with hash 49622054, now seen corresponding path program 2 times [2021-10-13 01:11:18,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:11:18,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541812334] [2021-10-13 01:11:18,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:11:18,366 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:11:18,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:18,373 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:11:18,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:18,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:18,392 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:11:18,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:18,392 INFO L82 PathProgramCache]: Analyzing trace with hash -416424834, now seen corresponding path program 2 times [2021-10-13 01:11:18,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:11:18,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226121029] [2021-10-13 01:11:18,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:11:18,393 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:11:18,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:18,451 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:11:18,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:11:18,458 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2021-10-13 01:11:18,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226121029] [2021-10-13 01:11:18,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226121029] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:11:18,459 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338633222] [2021-10-13 01:11:18,459 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 01:11:18,459 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:11:18,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:18,460 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:11:18,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-13 01:11:18,498 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 01:11:18,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:11:18,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 01:11:18,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:18,600 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:11:18,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338633222] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:11:18,601 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:11:18,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-10-13 01:11:18,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302295543] [2021-10-13 01:11:18,666 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:11:18,666 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:11:18,666 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:11:18,666 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:11:18,667 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 01:11:18,667 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:18,667 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:11:18,667 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:11:18,667 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a.c_Iteration3_Loop [2021-10-13 01:11:18,667 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:11:18,667 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:11:18,669 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:18,677 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:18,689 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:18,742 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:11:18,742 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 01:11:18,742 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:18,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:18,744 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:18,750 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:11:18,750 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:11:18,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-10-13 01:11:18,769 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 01:11:18,769 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 01:11:18,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:18,811 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:18,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:18,814 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:18,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-10-13 01:11:18,819 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:11:18,820 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:11:18,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:18,867 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:18,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:18,868 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:18,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-10-13 01:11:18,873 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 01:11:18,874 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:11:19,259 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 01:11:19,262 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:19,263 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:11:19,263 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:11:19,263 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:11:19,263 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:11:19,263 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 01:11:19,263 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:19,263 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:11:19,263 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:11:19,263 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a.c_Iteration3_Loop [2021-10-13 01:11:19,263 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:11:19,263 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:11:19,265 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:19,270 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:19,291 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:19,347 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:11:19,347 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 01:11:19,348 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:19,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:19,349 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:19,362 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:11:19,372 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:11:19,372 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:11:19,372 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:11:19,372 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:11:19,377 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-13 01:11:19,377 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-13 01:11:19,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-10-13 01:11:19,386 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:11:19,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:19,406 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:19,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:19,410 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:19,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-10-13 01:11:19,411 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:11:19,419 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:11:19,419 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:11:19,419 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:11:19,419 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:11:19,419 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:11:19,421 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:11:19,421 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:11:19,445 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 01:11:19,462 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-13 01:11:19,462 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-13 01:11:19,463 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:19,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:19,466 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:19,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-10-13 01:11:19,471 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 01:11:19,471 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 01:11:19,471 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 01:11:19,471 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-13 01:11:19,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:19,507 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-13 01:11:19,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:19,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:19,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:11:19,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:19,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:19,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 01:11:19,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:19,585 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 01:11:19,586 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-13 01:11:19,586 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 20 transitions. cyclomatic complexity: 7 Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:19,609 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 20 transitions. cyclomatic complexity: 7. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 26 states and 34 transitions. Complement of second has 6 states. [2021-10-13 01:11:19,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-13 01:11:19,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:19,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2021-10-13 01:11:19,612 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 5 letters. [2021-10-13 01:11:19,612 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:19,612 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 8 letters. Loop has 5 letters. [2021-10-13 01:11:19,612 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:19,612 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 10 letters. [2021-10-13 01:11:19,613 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:19,613 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 34 transitions. [2021-10-13 01:11:19,614 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-13 01:11:19,614 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 18 states and 25 transitions. [2021-10-13 01:11:19,614 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2021-10-13 01:11:19,614 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2021-10-13 01:11:19,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 25 transitions. [2021-10-13 01:11:19,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 01:11:19,615 INFO L681 BuchiCegarLoop]: Abstraction has 18 states and 25 transitions. [2021-10-13 01:11:19,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 25 transitions. [2021-10-13 01:11:19,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2021-10-13 01:11:19,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 17 states have (on average 1.411764705882353) internal successors, (24), 16 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:19,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 24 transitions. [2021-10-13 01:11:19,617 INFO L704 BuchiCegarLoop]: Abstraction has 17 states and 24 transitions. [2021-10-13 01:11:19,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:11:19,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 01:11:19,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-13 01:11:19,617 INFO L87 Difference]: Start difference. First operand 17 states and 24 transitions. Second operand has 8 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:19,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:11:19,657 INFO L93 Difference]: Finished difference Result 24 states and 31 transitions. [2021-10-13 01:11:19,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 01:11:19,657 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 31 transitions. [2021-10-13 01:11:19,659 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-13 01:11:19,660 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 21 states and 28 transitions. [2021-10-13 01:11:19,660 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2021-10-13 01:11:19,660 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2021-10-13 01:11:19,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 28 transitions. [2021-10-13 01:11:19,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 01:11:19,661 INFO L681 BuchiCegarLoop]: Abstraction has 21 states and 28 transitions. [2021-10-13 01:11:19,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 28 transitions. [2021-10-13 01:11:19,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2021-10-13 01:11:19,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:19,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2021-10-13 01:11:19,663 INFO L704 BuchiCegarLoop]: Abstraction has 19 states and 25 transitions. [2021-10-13 01:11:19,663 INFO L587 BuchiCegarLoop]: Abstraction has 19 states and 25 transitions. [2021-10-13 01:11:19,663 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-13 01:11:19,663 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 25 transitions. [2021-10-13 01:11:19,664 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-13 01:11:19,664 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:11:19,664 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:11:19,664 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2021-10-13 01:11:19,664 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-13 01:11:19,665 INFO L791 eck$LassoCheckResult]: Stem: 350#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~k~0, main_~i~0, main_~j~0, main_~n~0;havoc main_~k~0;havoc main_~i~0;havoc main_~j~0;havoc main_~n~0;main_~k~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~i~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~j~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 351#L20 assume main_~k~0 >= 1;main_~i~0 := 0; 355#L22-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 356#L24-2 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := main_~j~0 + main_~k~0; 353#L24-2 assume !(main_~j~0 <= main_~i~0); 354#L24-3 main_~i~0 := 1 + main_~i~0; 362#L22-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 363#L24-2 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := main_~j~0 + main_~k~0; 352#L24-2 [2021-10-13 01:11:19,665 INFO L793 eck$LassoCheckResult]: Loop: 352#L24-2 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := main_~j~0 + main_~k~0; 352#L24-2 [2021-10-13 01:11:19,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:19,665 INFO L82 PathProgramCache]: Analyzing trace with hash -416479044, now seen corresponding path program 3 times [2021-10-13 01:11:19,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:11:19,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262178944] [2021-10-13 01:11:19,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:11:19,666 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:11:19,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:19,673 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:11:19,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:19,680 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:11:19,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:19,681 INFO L82 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 1 times [2021-10-13 01:11:19,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:11:19,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938179245] [2021-10-13 01:11:19,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:11:19,681 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:11:19,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:19,684 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:11:19,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:19,686 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:11:19,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:19,687 INFO L82 PathProgramCache]: Analyzing trace with hash -25948454, now seen corresponding path program 4 times [2021-10-13 01:11:19,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:11:19,687 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977029424] [2021-10-13 01:11:19,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:11:19,688 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:11:19,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:19,694 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:11:19,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:11:19,702 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:11:19,781 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:11:19,781 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:11:19,781 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:11:19,781 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:11:19,781 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 01:11:19,781 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:19,782 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:11:19,782 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:11:19,782 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a.c_Iteration4_Lasso [2021-10-13 01:11:19,782 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:11:19,782 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:11:19,784 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:19,786 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:19,788 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:19,790 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:19,792 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:19,794 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:19,807 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:19,810 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:19,883 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:11:19,883 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 01:11:19,883 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:19,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:19,885 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:19,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-10-13 01:11:19,887 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:11:19,887 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:11:19,895 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 01:11:19,895 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 01:11:19,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:19,926 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:19,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:19,927 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:19,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-10-13 01:11:19,928 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:11:19,928 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:11:19,965 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 01:11:19,965 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=0} Honda state: {ULTIMATE.start_main_#t~nondet2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 01:11:19,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:19,985 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:19,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:19,986 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:19,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-10-13 01:11:19,997 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:11:19,997 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:11:20,005 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 01:11:20,006 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 01:11:20,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:20,026 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:20,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:20,027 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:20,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-10-13 01:11:20,029 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:11:20,029 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:11:20,037 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 01:11:20,038 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 01:11:20,057 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2021-10-13 01:11:20,057 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:20,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:20,058 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:20,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-10-13 01:11:20,074 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:11:20,074 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:11:20,110 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 01:11:20,110 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet3=0} Honda state: {ULTIMATE.start_main_#t~nondet3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 01:11:20,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:20,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:20,130 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:20,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:20,131 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:20,134 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:11:20,134 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:11:20,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-10-13 01:11:20,164 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2021-10-13 01:11:20,164 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:20,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:20,165 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:20,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-10-13 01:11:20,169 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 01:11:20,169 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:11:20,603 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 01:11:20,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:20,606 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:11:20,606 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:11:20,606 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:11:20,606 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:11:20,606 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 01:11:20,607 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:20,607 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:11:20,607 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:11:20,607 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a.c_Iteration4_Lasso [2021-10-13 01:11:20,607 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:11:20,607 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:11:20,608 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:20,620 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:20,622 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:20,624 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:20,626 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:20,628 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:20,630 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:20,641 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:11:20,703 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:11:20,703 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 01:11:20,704 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:20,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:20,705 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:20,714 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:11:20,724 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:11:20,725 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:11:20,725 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:11:20,725 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:11:20,725 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:11:20,726 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:11:20,726 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:11:20,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-10-13 01:11:20,733 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:11:20,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:20,755 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:20,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:20,756 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:20,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-10-13 01:11:20,758 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:11:20,767 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:11:20,767 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:11:20,767 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:11:20,767 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:11:20,767 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:11:20,768 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:11:20,768 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:11:20,770 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:11:20,792 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Ended with exit code 0 [2021-10-13 01:11:20,793 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:20,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:20,793 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:20,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-10-13 01:11:20,795 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:11:20,806 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:11:20,806 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:11:20,806 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:11:20,806 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:11:20,806 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:11:20,807 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:11:20,807 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:11:20,813 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:11:20,836 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Ended with exit code 0 [2021-10-13 01:11:20,836 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:20,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:20,837 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:20,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-10-13 01:11:20,839 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:11:20,848 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:11:20,848 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:11:20,848 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:11:20,848 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:11:20,848 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:11:20,848 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:11:20,849 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:11:20,850 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:11:20,872 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2021-10-13 01:11:20,872 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:20,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:20,873 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:20,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-10-13 01:11:20,886 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:11:20,894 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:11:20,894 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:11:20,894 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:11:20,894 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:11:20,894 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:11:20,894 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:11:20,894 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:11:20,895 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:11:20,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:20,917 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:20,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:20,918 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:20,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-10-13 01:11:20,919 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:11:20,928 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:11:20,928 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:11:20,928 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:11:20,928 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:11:20,930 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-13 01:11:20,930 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-13 01:11:20,935 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:11:20,957 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2021-10-13 01:11:20,958 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:20,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:20,959 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:20,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-10-13 01:11:20,960 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:11:20,969 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:11:20,969 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:11:20,969 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:11:20,969 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:11:20,974 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-13 01:11:20,974 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-13 01:11:20,997 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 01:11:21,007 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2021-10-13 01:11:21,007 INFO L444 ModelExtractionUtils]: 7 out of 16 variables were initially zero. Simplification set additionally 3 variables to zero. [2021-10-13 01:11:21,008 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:11:21,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:11:21,014 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:11:21,017 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 01:11:21,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2021-10-13 01:11:21,048 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2021-10-13 01:11:21,049 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 01:11:21,049 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~j~0) = 2*ULTIMATE.start_main_~i~0 - 2*ULTIMATE.start_main_~j~0 + 1 Supporting invariants [1*ULTIMATE.start_main_~k~0 - 1 >= 0] [2021-10-13 01:11:21,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:21,104 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2021-10-13 01:11:21,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:21,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:21,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 01:11:21,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:21,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:21,226 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 01:11:21,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:21,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:11:21,227 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2021-10-13 01:11:21,227 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 25 transitions. cyclomatic complexity: 9 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:21,251 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 25 transitions. cyclomatic complexity: 9. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 21 states and 27 transitions. Complement of second has 6 states. [2021-10-13 01:11:21,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-13 01:11:21,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:21,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 5 transitions. [2021-10-13 01:11:21,252 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 5 transitions. Stem has 8 letters. Loop has 1 letters. [2021-10-13 01:11:21,252 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:21,252 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-13 01:11:21,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:21,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:21,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 01:11:21,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:21,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:21,358 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 01:11:21,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:21,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:11:21,358 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 1 loop predicates [2021-10-13 01:11:21,359 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 25 transitions. cyclomatic complexity: 9 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:21,384 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 25 transitions. cyclomatic complexity: 9. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 21 states and 27 transitions. Complement of second has 6 states. [2021-10-13 01:11:21,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-13 01:11:21,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:21,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 5 transitions. [2021-10-13 01:11:21,386 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 5 transitions. Stem has 8 letters. Loop has 1 letters. [2021-10-13 01:11:21,386 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:21,386 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-13 01:11:21,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:11:21,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:21,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 01:11:21,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:21,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:11:21,500 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 01:11:21,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:11:21,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:11:21,501 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2021-10-13 01:11:21,501 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 25 transitions. cyclomatic complexity: 9 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:21,530 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 25 transitions. cyclomatic complexity: 9. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 23 states and 30 transitions. Complement of second has 5 states. [2021-10-13 01:11:21,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-13 01:11:21,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:11:21,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2021-10-13 01:11:21,531 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 8 letters. Loop has 1 letters. [2021-10-13 01:11:21,531 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:21,531 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 9 letters. Loop has 1 letters. [2021-10-13 01:11:21,531 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:21,531 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 8 letters. Loop has 2 letters. [2021-10-13 01:11:21,532 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:11:21,532 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 30 transitions. [2021-10-13 01:11:21,532 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-13 01:11:21,533 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 0 states and 0 transitions. [2021-10-13 01:11:21,533 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-13 01:11:21,533 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-13 01:11:21,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-13 01:11:21,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 01:11:21,533 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 01:11:21,533 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 01:11:21,533 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 01:11:21,533 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-13 01:11:21,533 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-13 01:11:21,533 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-13 01:11:21,533 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-13 01:11:21,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.10 01:11:21 BoogieIcfgContainer [2021-10-13 01:11:21,539 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-13 01:11:21,539 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 01:11:21,539 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 01:11:21,539 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 01:11:21,540 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:11:15" (3/4) ... [2021-10-13 01:11:21,543 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 01:11:21,543 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 01:11:21,544 INFO L168 Benchmark]: Toolchain (without parser) took 6624.80 ms. Allocated memory was 111.1 MB in the beginning and 144.7 MB in the end (delta: 33.6 MB). Free memory was 74.8 MB in the beginning and 71.3 MB in the end (delta: 3.5 MB). Peak memory consumption was 36.6 MB. Max. memory is 16.1 GB. [2021-10-13 01:11:21,545 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 111.1 MB. Free memory is still 90.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:11:21,545 INFO L168 Benchmark]: CACSL2BoogieTranslator took 232.50 ms. Allocated memory is still 111.1 MB. Free memory was 74.6 MB in the beginning and 88.3 MB in the end (delta: -13.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 01:11:21,545 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.16 ms. Allocated memory is still 111.1 MB. Free memory was 88.3 MB in the beginning and 86.8 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:11:21,546 INFO L168 Benchmark]: Boogie Preprocessor took 29.15 ms. Allocated memory is still 111.1 MB. Free memory was 86.8 MB in the beginning and 86.2 MB in the end (delta: 560.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:11:21,546 INFO L168 Benchmark]: RCFGBuilder took 245.39 ms. Allocated memory is still 111.1 MB. Free memory was 85.8 MB in the beginning and 78.0 MB in the end (delta: 7.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 01:11:21,546 INFO L168 Benchmark]: BuchiAutomizer took 6065.86 ms. Allocated memory was 111.1 MB in the beginning and 144.7 MB in the end (delta: 33.6 MB). Free memory was 78.0 MB in the beginning and 71.3 MB in the end (delta: 6.7 MB). Peak memory consumption was 43.2 MB. Max. memory is 16.1 GB. [2021-10-13 01:11:21,547 INFO L168 Benchmark]: Witness Printer took 3.69 ms. Allocated memory is still 144.7 MB. Free memory is still 71.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:11:21,549 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 111.1 MB. Free memory is still 90.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 232.50 ms. Allocated memory is still 111.1 MB. Free memory was 74.6 MB in the beginning and 88.3 MB in the end (delta: -13.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.16 ms. Allocated memory is still 111.1 MB. Free memory was 88.3 MB in the beginning and 86.8 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.15 ms. Allocated memory is still 111.1 MB. Free memory was 86.8 MB in the beginning and 86.2 MB in the end (delta: 560.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 245.39 ms. Allocated memory is still 111.1 MB. Free memory was 85.8 MB in the beginning and 78.0 MB in the end (delta: 7.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 6065.86 ms. Allocated memory was 111.1 MB in the beginning and 144.7 MB in the end (delta: 33.6 MB). Free memory was 78.0 MB in the beginning and 71.3 MB in the end (delta: 6.7 MB). Peak memory consumption was 43.2 MB. Max. memory is 16.1 GB. * Witness Printer took 3.69 ms. Allocated memory is still 144.7 MB. Free memory is still 71.3 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 6 terminating modules (2 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -1 * i and consists of 6 locations. One deterministic module has affine ranking function k + -1 * i and consists of 6 locations. One deterministic module has affine ranking function n + -1 * i and consists of 4 locations. One nondeterministic module has affine ranking function 2 * i + -2 * j + 1 and consists of 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 6.0s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 4.7s. Construction of modules took 0.1s. Büchi inclusion checks took 0.9s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 39.4ms AutomataMinimizationTime, 5 MinimizatonAttempts, 6 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 19 states and ocurred in iteration 3. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 3/4 HoareTripleCheckerStatistics: 29 SDtfs, 54 SDslu, 9 SDs, 0 SdLazy, 111 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 102.4ms Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax158 hnf98 lsp63 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq153 hnf92 smp100 dnf100 smp100 tf105 neg100 sie113 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 52ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 10 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.7s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-10-13 01:11:21,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2021-10-13 01:11:21,814 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-10-13 01:11:22,016 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_add670bc-22ad-40e6-8ad5-1c32876c2a81/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...