./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-new/nested-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-new/nested-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa --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 32bit --witnessprinter.graph.data.programhash 3baf312ca85439572472b3c02ed304b3157fa97373d6ada535e5a723c6c0219a --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 00:58:24,721 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 00:58:24,722 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 00:58:24,751 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 00:58:24,752 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 00:58:24,753 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 00:58:24,755 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 00:58:24,757 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 00:58:24,759 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 00:58:24,760 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 00:58:24,761 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 00:58:24,762 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 00:58:24,762 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 00:58:24,764 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 00:58:24,765 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 00:58:24,766 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 00:58:24,767 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 00:58:24,768 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 00:58:24,771 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 00:58:24,773 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 00:58:24,775 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 00:58:24,776 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 00:58:24,777 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 00:58:24,778 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 00:58:24,782 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 00:58:24,782 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 00:58:24,783 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 00:58:24,784 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 00:58:24,784 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 00:58:24,785 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 00:58:24,786 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 00:58:24,786 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 00:58:24,787 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 00:58:24,788 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 00:58:24,789 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 00:58:24,789 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 00:58:24,789 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 00:58:24,789 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 00:58:24,790 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 00:58:24,790 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 00:58:24,791 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 00:58:24,791 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-07 00:58:24,813 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 00:58:24,814 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 00:58:24,814 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 00:58:24,814 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 00:58:24,815 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 00:58:24,815 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 00:58:24,815 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 00:58:24,815 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-07 00:58:24,815 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-07 00:58:24,816 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-07 00:58:24,816 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-07 00:58:24,816 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-07 00:58:24,816 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-07 00:58:24,816 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 00:58:24,816 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 00:58:24,817 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-07 00:58:24,817 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 00:58:24,817 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 00:58:24,817 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 00:58:24,817 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-07 00:58:24,817 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-07 00:58:24,817 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-07 00:58:24,817 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 00:58:24,817 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 00:58:24,818 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-07 00:58:24,818 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 00:58:24,818 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-07 00:58:24,818 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 00:58:24,818 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 00:58:24,818 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 00:58:24,818 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 00:58:24,818 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 00:58:24,819 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-07 00:58:24,819 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_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3baf312ca85439572472b3c02ed304b3157fa97373d6ada535e5a723c6c0219a [2021-12-07 00:58:24,998 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 00:58:25,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 00:58:25,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 00:58:25,018 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 00:58:25,019 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 00:58:25,019 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/loop-new/nested-1.i [2021-12-07 00:58:25,059 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/data/24f4a8cff/0f3e86a7e5544a39b280e42b12d40576/FLAGb19a5d70e [2021-12-07 00:58:25,430 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 00:58:25,430 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/sv-benchmarks/c/loop-new/nested-1.i [2021-12-07 00:58:25,435 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/data/24f4a8cff/0f3e86a7e5544a39b280e42b12d40576/FLAGb19a5d70e [2021-12-07 00:58:25,445 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/data/24f4a8cff/0f3e86a7e5544a39b280e42b12d40576 [2021-12-07 00:58:25,447 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 00:58:25,448 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 00:58:25,450 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 00:58:25,450 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 00:58:25,452 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 00:58:25,453 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:58:25" (1/1) ... [2021-12-07 00:58:25,453 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@366f1a49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:58:25, skipping insertion in model container [2021-12-07 00:58:25,454 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:58:25" (1/1) ... [2021-12-07 00:58:25,460 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 00:58:25,474 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 00:58:25,601 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/sv-benchmarks/c/loop-new/nested-1.i[891,904] [2021-12-07 00:58:25,607 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:58:25,613 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 00:58:25,622 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/sv-benchmarks/c/loop-new/nested-1.i[891,904] [2021-12-07 00:58:25,625 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:58:25,635 INFO L208 MainTranslator]: Completed translation [2021-12-07 00:58:25,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:58:25 WrapperNode [2021-12-07 00:58:25,635 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 00:58:25,636 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 00:58:25,636 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 00:58:25,636 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 00:58:25,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:58:25" (1/1) ... [2021-12-07 00:58:25,646 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:58:25" (1/1) ... [2021-12-07 00:58:25,658 INFO L137 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 50 [2021-12-07 00:58:25,658 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 00:58:25,659 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 00:58:25,659 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 00:58:25,659 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 00:58:25,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:58:25" (1/1) ... [2021-12-07 00:58:25,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:58:25" (1/1) ... [2021-12-07 00:58:25,665 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:58:25" (1/1) ... [2021-12-07 00:58:25,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:58:25" (1/1) ... [2021-12-07 00:58:25,667 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:58:25" (1/1) ... [2021-12-07 00:58:25,670 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:58:25" (1/1) ... [2021-12-07 00:58:25,671 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:58:25" (1/1) ... [2021-12-07 00:58:25,672 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 00:58:25,672 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 00:58:25,672 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 00:58:25,672 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 00:58:25,673 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:58:25" (1/1) ... [2021-12-07 00:58:25,679 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:58:25,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:58:25,700 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:58:25,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-07 00:58:25,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 00:58:25,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-07 00:58:25,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 00:58:25,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 00:58:25,774 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 00:58:25,775 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 00:58:25,852 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 00:58:25,858 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 00:58:25,858 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-07 00:58:25,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:58:25 BoogieIcfgContainer [2021-12-07 00:58:25,860 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 00:58:25,861 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-07 00:58:25,861 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-07 00:58:25,864 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-07 00:58:25,864 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-07 00:58:25,864 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 12:58:25" (1/3) ... [2021-12-07 00:58:25,865 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@417effa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 12:58:25, skipping insertion in model container [2021-12-07 00:58:25,865 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-07 00:58:25,865 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:58:25" (2/3) ... [2021-12-07 00:58:25,866 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@417effa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 12:58:25, skipping insertion in model container [2021-12-07 00:58:25,866 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-07 00:58:25,866 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:58:25" (3/3) ... [2021-12-07 00:58:25,867 INFO L388 chiAutomizerObserver]: Analyzing ICFG nested-1.i [2021-12-07 00:58:25,911 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-07 00:58:25,911 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-07 00:58:25,912 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-07 00:58:25,912 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-07 00:58:25,912 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-07 00:58:25,912 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-07 00:58:25,912 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-07 00:58:25,912 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-07 00:58:25,927 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:58:25,945 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-07 00:58:25,946 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-07 00:58:25,946 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-07 00:58:25,952 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-12-07 00:58:25,952 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-07 00:58:25,952 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-07 00:58:25,952 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:58:25,954 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-07 00:58:25,955 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-07 00:58:25,955 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-07 00:58:25,955 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-12-07 00:58:25,955 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-07 00:58:25,962 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~post5#1, main_#t~post4#1, main_#t~post3#1, main_~n~0#1, main_~m~0#1, main_~k~0#1, main_~i~0#1, main_~j~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~k~0#1 := 0;havoc main_~i~0#1;havoc main_~j~0#1; 6#L29true assume !!(10 <= main_~n~0#1 && main_~n~0#1 <= 10000); 5#L30true assume !!(10 <= main_~m~0#1 && main_~m~0#1 <= 10000);main_~i~0#1 := 0; 9#L31-3true [2021-12-07 00:58:25,962 INFO L793 eck$LassoCheckResult]: Loop: 9#L31-3true assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0; 13#L32-3true assume !true; 15#L31-2true main_#t~post3#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 9#L31-3true [2021-12-07 00:58:25,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:58:25,969 INFO L85 PathProgramCache]: Analyzing trace with hash 925672, now seen corresponding path program 1 times [2021-12-07 00:58:25,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:58:25,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730598977] [2021-12-07 00:58:25,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:58:25,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:58:26,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:58:26,061 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:58:26,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:58:26,086 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:58:26,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:58:26,089 INFO L85 PathProgramCache]: Analyzing trace with hash 50037, now seen corresponding path program 1 times [2021-12-07 00:58:26,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:58:26,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504672358] [2021-12-07 00:58:26,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:58:26,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:58:26,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:26,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:58:26,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:58:26,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504672358] [2021-12-07 00:58:26,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504672358] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:58:26,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:58:26,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 00:58:26,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152096333] [2021-12-07 00:58:26,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:58:26,127 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-07 00:58:26,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:58:26,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-07 00:58:26,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-07 00:58:26,154 INFO L87 Difference]: Start difference. First operand has 15 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:58:26,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:58:26,158 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2021-12-07 00:58:26,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-07 00:58:26,164 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 18 transitions. [2021-12-07 00:58:26,166 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-07 00:58:26,169 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 8 states and 9 transitions. [2021-12-07 00:58:26,170 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-12-07 00:58:26,170 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-12-07 00:58:26,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2021-12-07 00:58:26,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 00:58:26,171 INFO L681 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2021-12-07 00:58:26,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2021-12-07 00:58:26,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-12-07 00:58:26,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.125) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:58:26,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2021-12-07 00:58:26,193 INFO L704 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2021-12-07 00:58:26,193 INFO L587 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2021-12-07 00:58:26,193 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-07 00:58:26,194 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 9 transitions. [2021-12-07 00:58:26,194 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-07 00:58:26,194 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-07 00:58:26,194 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-07 00:58:26,194 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-12-07 00:58:26,194 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-07 00:58:26,195 INFO L791 eck$LassoCheckResult]: Stem: 40#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 41#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~post5#1, main_#t~post4#1, main_#t~post3#1, main_~n~0#1, main_~m~0#1, main_~k~0#1, main_~i~0#1, main_~j~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~k~0#1 := 0;havoc main_~i~0#1;havoc main_~j~0#1; 45#L29 assume !!(10 <= main_~n~0#1 && main_~n~0#1 <= 10000); 42#L30 assume !!(10 <= main_~m~0#1 && main_~m~0#1 <= 10000);main_~i~0#1 := 0; 43#L31-3 [2021-12-07 00:58:26,195 INFO L793 eck$LassoCheckResult]: Loop: 43#L31-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0; 39#L32-3 assume !(main_~j~0#1 < main_~m~0#1); 44#L31-2 main_#t~post3#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 43#L31-3 [2021-12-07 00:58:26,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:58:26,195 INFO L85 PathProgramCache]: Analyzing trace with hash 925672, now seen corresponding path program 2 times [2021-12-07 00:58:26,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:58:26,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877864733] [2021-12-07 00:58:26,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:58:26,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:58:26,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:58:26,203 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:58:26,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:58:26,210 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:58:26,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:58:26,210 INFO L85 PathProgramCache]: Analyzing trace with hash 49851, now seen corresponding path program 1 times [2021-12-07 00:58:26,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:58:26,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939079000] [2021-12-07 00:58:26,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:58:26,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:58:26,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:58:26,216 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:58:26,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:58:26,221 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:58:26,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:58:26,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1806910836, now seen corresponding path program 1 times [2021-12-07 00:58:26,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:58:26,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172910071] [2021-12-07 00:58:26,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:58:26,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:58:26,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:26,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:58:26,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:58:26,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172910071] [2021-12-07 00:58:26,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172910071] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:58:26,273 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:58:26,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:58:26,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087227207] [2021-12-07 00:58:26,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:58:26,315 INFO L210 LassoAnalysis]: Preferences: [2021-12-07 00:58:26,315 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-07 00:58:26,315 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-07 00:58:26,316 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-07 00:58:26,316 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-07 00:58:26,316 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:58:26,316 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-07 00:58:26,316 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-07 00:58:26,316 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested-1.i_Iteration2_Loop [2021-12-07 00:58:26,316 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-07 00:58:26,316 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-07 00:58:26,332 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:58:26,337 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:58:26,344 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:58:26,380 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-07 00:58:26,380 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-07 00:58:26,382 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:58:26,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:58:26,384 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:58:26,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-12-07 00:58:26,385 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-07 00:58:26,385 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:58:26,401 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-07 00:58:26,401 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post3#1=0} Honda state: {ULTIMATE.start_main_#t~post3#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-07 00:58:26,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-12-07 00:58:26,432 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:58:26,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:58:26,433 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:58:26,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-12-07 00:58:26,434 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-07 00:58:26,434 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:58:26,461 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2021-12-07 00:58:26,461 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:58:26,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:58:26,462 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:58:26,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-12-07 00:58:26,463 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-07 00:58:26,463 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:58:26,604 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-07 00:58:26,606 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2021-12-07 00:58:26,607 INFO L210 LassoAnalysis]: Preferences: [2021-12-07 00:58:26,607 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-07 00:58:26,607 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-07 00:58:26,607 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-07 00:58:26,607 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-07 00:58:26,607 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:58:26,607 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-07 00:58:26,607 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-07 00:58:26,607 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested-1.i_Iteration2_Loop [2021-12-07 00:58:26,607 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-07 00:58:26,607 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-07 00:58:26,608 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:58:26,610 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:58:26,615 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:58:26,645 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-07 00:58:26,650 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-07 00:58:26,651 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:58:26,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:58:26,652 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:58:26,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-12-07 00:58:26,653 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 [2021-12-07 00:58:26,662 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:58:26,663 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-07 00:58:26,663 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:58:26,663 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 00:58:26,663 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:58:26,665 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-07 00:58:26,665 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-07 00:58:26,667 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 00:58:26,697 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2021-12-07 00:58:26,697 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:58:26,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:58:26,698 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:58:26,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-12-07 00:58:26,699 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 [2021-12-07 00:58:26,706 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:58:26,706 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-07 00:58:26,707 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:58:26,707 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 00:58:26,707 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:58:26,708 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-07 00:58:26,708 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-07 00:58:26,711 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-07 00:58:26,715 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-07 00:58:26,716 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-07 00:58:26,717 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:58:26,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:58:26,722 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:58:26,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-12-07 00:58:26,723 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-07 00:58:26,723 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-07 00:58:26,723 INFO L513 LassoAnalysis]: Proved termination. [2021-12-07 00:58:26,724 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~n~0#1) = -1*ULTIMATE.start_main_~i~0#1 + 1*ULTIMATE.start_main_~n~0#1 Supporting invariants [] [2021-12-07 00:58:26,743 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2021-12-07 00:58:26,744 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-07 00:58:26,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:58:26,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:26,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 00:58:26,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:58:26,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:26,782 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-07 00:58:26,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:58:26,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:58:26,806 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 [2021-12-07 00:58:26,806 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 9 transitions. cyclomatic complexity: 2 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:58:26,827 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 9 transitions. cyclomatic complexity: 2. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 13 states and 17 transitions. Complement of second has 4 states. [2021-12-07 00:58:26,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-12-07 00:58:26,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:58:26,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-12-07 00:58:26,829 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 3 letters. [2021-12-07 00:58:26,830 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:58:26,830 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 3 letters. [2021-12-07 00:58:26,830 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:58:26,830 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 6 letters. [2021-12-07 00:58:26,830 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:58:26,830 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 17 transitions. [2021-12-07 00:58:26,831 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-07 00:58:26,831 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 12 states and 15 transitions. [2021-12-07 00:58:26,832 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-12-07 00:58:26,832 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-12-07 00:58:26,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 15 transitions. [2021-12-07 00:58:26,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-07 00:58:26,832 INFO L681 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2021-12-07 00:58:26,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 15 transitions. [2021-12-07 00:58:26,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2021-12-07 00:58:26,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:58:26,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2021-12-07 00:58:26,833 INFO L704 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2021-12-07 00:58:26,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:58:26,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:58:26,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:58:26,834 INFO L87 Difference]: Start difference. First operand 11 states and 14 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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) [2021-12-07 00:58:26,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:58:26,843 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2021-12-07 00:58:26,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:58:26,844 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 18 transitions. [2021-12-07 00:58:26,845 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-07 00:58:26,845 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 15 states and 18 transitions. [2021-12-07 00:58:26,845 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2021-12-07 00:58:26,845 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2021-12-07 00:58:26,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 18 transitions. [2021-12-07 00:58:26,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-07 00:58:26,846 INFO L681 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2021-12-07 00:58:26,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 18 transitions. [2021-12-07 00:58:26,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 12. [2021-12-07 00:58:26,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.25) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:58:26,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2021-12-07 00:58:26,847 INFO L704 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2021-12-07 00:58:26,847 INFO L587 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2021-12-07 00:58:26,847 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-07 00:58:26,847 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 15 transitions. [2021-12-07 00:58:26,847 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-07 00:58:26,847 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-07 00:58:26,847 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-07 00:58:26,848 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-12-07 00:58:26,848 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-07 00:58:26,848 INFO L791 eck$LassoCheckResult]: Stem: 132#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 133#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~post5#1, main_#t~post4#1, main_#t~post3#1, main_~n~0#1, main_~m~0#1, main_~k~0#1, main_~i~0#1, main_~j~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~k~0#1 := 0;havoc main_~i~0#1;havoc main_~j~0#1; 137#L29 assume !!(10 <= main_~n~0#1 && main_~n~0#1 <= 10000); 134#L30 assume !!(10 <= main_~m~0#1 && main_~m~0#1 <= 10000);main_~i~0#1 := 0; 135#L31-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0; 129#L32-3 [2021-12-07 00:58:26,848 INFO L793 eck$LassoCheckResult]: Loop: 129#L32-3 assume !!(main_~j~0#1 < main_~m~0#1);main_#t~post5#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 128#L32-2 main_#t~post4#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 129#L32-3 [2021-12-07 00:58:26,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:58:26,848 INFO L85 PathProgramCache]: Analyzing trace with hash 28695852, now seen corresponding path program 1 times [2021-12-07 00:58:26,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:58:26,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33681375] [2021-12-07 00:58:26,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:58:26,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:58:26,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:58:26,855 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:58:26,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:58:26,861 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:58:26,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:58:26,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1859, now seen corresponding path program 1 times [2021-12-07 00:58:26,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:58:26,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779323011] [2021-12-07 00:58:26,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:58:26,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:58:26,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:58:26,865 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:58:26,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:58:26,869 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:58:26,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:58:26,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1806910894, now seen corresponding path program 1 times [2021-12-07 00:58:26,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:58:26,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515149101] [2021-12-07 00:58:26,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:58:26,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:58:26,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:58:26,876 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:58:26,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:58:26,884 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:58:26,898 INFO L210 LassoAnalysis]: Preferences: [2021-12-07 00:58:26,898 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-07 00:58:26,898 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-07 00:58:26,898 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-07 00:58:26,898 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-07 00:58:26,899 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:58:26,899 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-07 00:58:26,899 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-07 00:58:26,899 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested-1.i_Iteration3_Loop [2021-12-07 00:58:26,899 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-07 00:58:26,899 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-07 00:58:26,900 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:58:26,901 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:58:26,903 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:58:26,905 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:58:26,926 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-07 00:58:26,926 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-07 00:58:26,927 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:58:26,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:58:26,927 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:58:26,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-12-07 00:58:26,929 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-07 00:58:26,929 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:58:26,937 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-07 00:58:26,937 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post4#1=0} Honda state: {ULTIMATE.start_main_#t~post4#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-07 00:58:26,956 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2021-12-07 00:58:26,956 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:58:26,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:58:26,957 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:58:26,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-12-07 00:58:26,958 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-07 00:58:26,959 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:58:26,985 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2021-12-07 00:58:26,985 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:58:26,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:58:26,986 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:58:26,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-12-07 00:58:26,987 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-07 00:58:26,987 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:58:27,021 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-07 00:58:27,021 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~k~0#1=0} Honda state: {ULTIMATE.start_main_~k~0#1=0} Generalized eigenvectors: [{ULTIMATE.start_main_~k~0#1=-1}, {ULTIMATE.start_main_~k~0#1=-1}, {ULTIMATE.start_main_~k~0#1=3}] Lambdas: [0, 4, 1] Nus: [1, 1] [2021-12-07 00:58:27,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-12-07 00:58:27,039 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:58:27,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:58:27,040 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:58:27,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-12-07 00:58:27,097 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-07 00:58:27,098 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:58:27,108 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-07 00:58:27,109 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post5#1=0} Honda state: {ULTIMATE.start_main_#t~post5#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-07 00:58:27,136 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2021-12-07 00:58:27,137 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:58:27,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:58:27,138 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:58:27,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-12-07 00:58:27,140 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-07 00:58:27,140 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:58:27,172 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2021-12-07 00:58:27,173 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:58:27,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:58:27,174 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:58:27,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-12-07 00:58:27,175 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-07 00:58:27,175 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:58:27,332 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-07 00:58:27,334 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2021-12-07 00:58:27,335 INFO L210 LassoAnalysis]: Preferences: [2021-12-07 00:58:27,335 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-07 00:58:27,335 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-07 00:58:27,335 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-07 00:58:27,335 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-07 00:58:27,335 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:58:27,335 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-07 00:58:27,335 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-07 00:58:27,335 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested-1.i_Iteration3_Loop [2021-12-07 00:58:27,335 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-07 00:58:27,335 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-07 00:58:27,336 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:58:27,337 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:58:27,339 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:58:27,340 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:58:27,358 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-07 00:58:27,358 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-07 00:58:27,359 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:58:27,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:58:27,359 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:58:27,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-12-07 00:58:27,361 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 [2021-12-07 00:58:27,367 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:58:27,367 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-07 00:58:27,368 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:58:27,368 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 00:58:27,368 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:58:27,368 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-07 00:58:27,368 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-07 00:58:27,369 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 00:58:27,387 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2021-12-07 00:58:27,387 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:58:27,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:58:27,388 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:58:27,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-12-07 00:58:27,389 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 [2021-12-07 00:58:27,396 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:58:27,396 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-07 00:58:27,396 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:58:27,396 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 00:58:27,396 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:58:27,397 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-07 00:58:27,397 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-07 00:58:27,398 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 00:58:27,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-12-07 00:58:27,417 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:58:27,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:58:27,418 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:58:27,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-12-07 00:58:27,418 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 [2021-12-07 00:58:27,425 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:58:27,425 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-07 00:58:27,426 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:58:27,426 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 00:58:27,426 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:58:27,426 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-07 00:58:27,426 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-07 00:58:27,427 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 00:58:27,446 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2021-12-07 00:58:27,446 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:58:27,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:58:27,447 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:58:27,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-12-07 00:58:27,448 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 [2021-12-07 00:58:27,455 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:58:27,455 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-07 00:58:27,455 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:58:27,455 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 00:58:27,455 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:58:27,456 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-07 00:58:27,456 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-07 00:58:27,457 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-07 00:58:27,459 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-07 00:58:27,459 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-07 00:58:27,459 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:58:27,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:58:27,460 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:58:27,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-12-07 00:58:27,461 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-07 00:58:27,461 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-07 00:58:27,461 INFO L513 LassoAnalysis]: Proved termination. [2021-12-07 00:58:27,462 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~m~0#1, ULTIMATE.start_main_~j~0#1) = 1*ULTIMATE.start_main_~m~0#1 - 1*ULTIMATE.start_main_~j~0#1 Supporting invariants [] [2021-12-07 00:58:27,480 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2021-12-07 00:58:27,480 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-07 00:58:27,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:58:27,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:27,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 00:58:27,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:58:27,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:27,503 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-07 00:58:27,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:58:27,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:58:27,514 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 [2021-12-07 00:58:27,514 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 15 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:58:27,524 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 15 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 24 states and 31 transitions. Complement of second has 7 states. [2021-12-07 00:58:27,525 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 [2021-12-07 00:58:27,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:58:27,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2021-12-07 00:58:27,526 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2021-12-07 00:58:27,526 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:58:27,526 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 7 letters. Loop has 2 letters. [2021-12-07 00:58:27,526 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:58:27,526 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 4 letters. [2021-12-07 00:58:27,526 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:58:27,526 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 31 transitions. [2021-12-07 00:58:27,528 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-07 00:58:27,528 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 17 states and 21 transitions. [2021-12-07 00:58:27,528 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-12-07 00:58:27,528 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-12-07 00:58:27,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 21 transitions. [2021-12-07 00:58:27,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-07 00:58:27,528 INFO L681 BuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2021-12-07 00:58:27,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 21 transitions. [2021-12-07 00:58:27,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 12. [2021-12-07 00:58:27,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:58:27,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2021-12-07 00:58:27,530 INFO L704 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2021-12-07 00:58:27,530 INFO L587 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2021-12-07 00:58:27,530 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-07 00:58:27,530 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 14 transitions. [2021-12-07 00:58:27,530 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-07 00:58:27,530 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-07 00:58:27,530 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-07 00:58:27,531 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:58:27,531 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-07 00:58:27,531 INFO L791 eck$LassoCheckResult]: Stem: 213#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 214#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~post5#1, main_#t~post4#1, main_#t~post3#1, main_~n~0#1, main_~m~0#1, main_~k~0#1, main_~i~0#1, main_~j~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~k~0#1 := 0;havoc main_~i~0#1;havoc main_~j~0#1; 218#L29 assume !!(10 <= main_~n~0#1 && main_~n~0#1 <= 10000); 215#L30 assume !!(10 <= main_~m~0#1 && main_~m~0#1 <= 10000);main_~i~0#1 := 0; 216#L31-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0; 217#L32-3 assume !!(main_~j~0#1 < main_~m~0#1);main_#t~post5#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 211#L32-2 main_#t~post4#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 212#L32-3 assume !(main_~j~0#1 < main_~m~0#1); 219#L31-2 main_#t~post3#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 220#L31-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0; 210#L32-3 [2021-12-07 00:58:27,531 INFO L793 eck$LassoCheckResult]: Loop: 210#L32-3 assume !!(main_~j~0#1 < main_~m~0#1);main_#t~post5#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 209#L32-2 main_#t~post4#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 210#L32-3 [2021-12-07 00:58:27,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:58:27,531 INFO L85 PathProgramCache]: Analyzing trace with hash 857348446, now seen corresponding path program 1 times [2021-12-07 00:58:27,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:58:27,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929957324] [2021-12-07 00:58:27,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:58:27,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:58:27,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:27,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:58:27,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:58:27,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929957324] [2021-12-07 00:58:27,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929957324] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:58:27,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400319886] [2021-12-07 00:58:27,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:58:27,560 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:58:27,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:58:27,561 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:58:27,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-07 00:58:27,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:27,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-07 00:58:27,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:58:27,638 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:58:27,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:58:27,668 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:58:27,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400319886] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:58:27,668 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:58:27,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-12-07 00:58:27,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324574305] [2021-12-07 00:58:27,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:58:27,675 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-07 00:58:27,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:58:27,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1859, now seen corresponding path program 2 times [2021-12-07 00:58:27,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:58:27,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062684020] [2021-12-07 00:58:27,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:58:27,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:58:27,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:58:27,680 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:58:27,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:58:27,684 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:58:27,698 INFO L210 LassoAnalysis]: Preferences: [2021-12-07 00:58:27,698 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-07 00:58:27,698 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-07 00:58:27,698 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-07 00:58:27,699 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-07 00:58:27,699 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:58:27,699 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-07 00:58:27,699 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-07 00:58:27,699 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested-1.i_Iteration4_Loop [2021-12-07 00:58:27,699 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-07 00:58:27,699 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-07 00:58:27,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2021-12-07 00:58:27,700 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:58:27,703 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:58:27,704 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:58:27,709 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:58:27,718 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2021-12-07 00:58:27,729 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-07 00:58:27,729 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-07 00:58:27,729 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:58:27,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:58:27,730 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:58:27,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-12-07 00:58:27,733 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-07 00:58:27,733 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:58:27,759 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2021-12-07 00:58:27,759 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:58:27,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:58:27,760 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:58:27,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-12-07 00:58:27,761 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-07 00:58:27,761 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:58:27,794 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-07 00:58:27,794 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~k~0#1=0} Honda state: {ULTIMATE.start_main_~k~0#1=0} Generalized eigenvectors: [{ULTIMATE.start_main_~k~0#1=-1}, {ULTIMATE.start_main_~k~0#1=-1}, {ULTIMATE.start_main_~k~0#1=3}] Lambdas: [0, 4, 1] Nus: [1, 1] [2021-12-07 00:58:27,812 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2021-12-07 00:58:27,813 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:58:27,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:58:27,813 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:58:27,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-12-07 00:58:27,815 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-07 00:58:27,815 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:58:27,825 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-07 00:58:27,825 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post5#1=0} Honda state: {ULTIMATE.start_main_#t~post5#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-07 00:58:27,843 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2021-12-07 00:58:27,843 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:58:27,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:58:27,844 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:58:27,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-12-07 00:58:27,846 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-07 00:58:27,846 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:58:27,872 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2021-12-07 00:58:27,872 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:58:27,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:58:27,873 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:58:27,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-12-07 00:58:27,874 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-07 00:58:27,875 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:58:28,030 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-07 00:58:28,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-12-07 00:58:28,033 INFO L210 LassoAnalysis]: Preferences: [2021-12-07 00:58:28,033 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-07 00:58:28,033 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-07 00:58:28,033 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-07 00:58:28,033 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-07 00:58:28,033 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:58:28,033 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-07 00:58:28,033 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-07 00:58:28,033 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested-1.i_Iteration4_Loop [2021-12-07 00:58:28,033 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-07 00:58:28,033 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-07 00:58:28,034 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:58:28,036 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:58:28,040 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:58:28,041 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:58:28,059 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-07 00:58:28,059 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-07 00:58:28,059 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:58:28,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:58:28,060 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:58:28,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-12-07 00:58:28,062 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 [2021-12-07 00:58:28,069 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:58:28,069 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-07 00:58:28,069 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:58:28,069 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 00:58:28,069 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:58:28,070 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-07 00:58:28,070 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-07 00:58:28,072 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 00:58:28,090 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2021-12-07 00:58:28,090 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:58:28,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:58:28,091 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:58:28,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-12-07 00:58:28,093 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 [2021-12-07 00:58:28,100 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:58:28,100 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-07 00:58:28,100 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:58:28,100 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 00:58:28,100 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:58:28,101 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-07 00:58:28,101 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-07 00:58:28,103 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-07 00:58:28,106 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-12-07 00:58:28,106 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-07 00:58:28,106 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:58:28,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:58:28,107 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:58:28,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-12-07 00:58:28,107 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-07 00:58:28,108 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-07 00:58:28,108 INFO L513 LassoAnalysis]: Proved termination. [2021-12-07 00:58:28,108 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0#1, ULTIMATE.start_main_~m~0#1) = -1*ULTIMATE.start_main_~j~0#1 + 1*ULTIMATE.start_main_~m~0#1 Supporting invariants [] [2021-12-07 00:58:28,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-12-07 00:58:28,126 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-07 00:58:28,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:58:28,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:28,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 00:58:28,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:58:28,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:28,155 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-07 00:58:28,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:58:28,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:58:28,165 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 [2021-12-07 00:58:28,165 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 14 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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) [2021-12-07 00:58:28,176 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 14 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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) Result 20 states and 25 transitions. Complement of second has 7 states. [2021-12-07 00:58:28,176 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 [2021-12-07 00:58:28,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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) [2021-12-07 00:58:28,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2021-12-07 00:58:28,177 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 10 letters. Loop has 2 letters. [2021-12-07 00:58:28,177 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:58:28,177 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-07 00:58:28,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:58:28,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:28,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 00:58:28,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:58:28,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:28,203 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-07 00:58:28,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:58:28,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:58:28,213 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-07 00:58:28,213 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 14 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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) [2021-12-07 00:58:28,221 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 14 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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) Result 20 states and 25 transitions. Complement of second has 7 states. [2021-12-07 00:58:28,221 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 [2021-12-07 00:58:28,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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) [2021-12-07 00:58:28,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2021-12-07 00:58:28,222 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 10 letters. Loop has 2 letters. [2021-12-07 00:58:28,222 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:58:28,222 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-07 00:58:28,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:58:28,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:28,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 00:58:28,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:58:28,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:58:28,247 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-07 00:58:28,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:58:28,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:58:28,256 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-07 00:58:28,256 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 14 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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) [2021-12-07 00:58:28,266 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 14 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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) Result 17 states and 21 transitions. Complement of second has 6 states. [2021-12-07 00:58:28,266 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 [2021-12-07 00:58:28,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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) [2021-12-07 00:58:28,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2021-12-07 00:58:28,267 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 10 letters. Loop has 2 letters. [2021-12-07 00:58:28,267 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:58:28,267 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 12 letters. Loop has 2 letters. [2021-12-07 00:58:28,268 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:58:28,268 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 10 letters. Loop has 4 letters. [2021-12-07 00:58:28,268 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:58:28,268 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 21 transitions. [2021-12-07 00:58:28,269 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-07 00:58:28,269 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 0 states and 0 transitions. [2021-12-07 00:58:28,269 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-07 00:58:28,269 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-07 00:58:28,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-07 00:58:28,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 00:58:28,269 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-07 00:58:28,269 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-07 00:58:28,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:58:28,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 00:58:28,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-12-07 00:58:28,270 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:58:28,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:58:28,270 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2021-12-07 00:58:28,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-07 00:58:28,270 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2021-12-07 00:58:28,270 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-07 00:58:28,270 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2021-12-07 00:58:28,270 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-07 00:58:28,270 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-07 00:58:28,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-07 00:58:28,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 00:58:28,271 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-07 00:58:28,271 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-07 00:58:28,271 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-07 00:58:28,271 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-07 00:58:28,271 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-12-07 00:58:28,271 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-07 00:58:28,271 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-12-07 00:58:28,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 12:58:28 BoogieIcfgContainer [2021-12-07 00:58:28,276 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-07 00:58:28,276 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-07 00:58:28,276 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-07 00:58:28,276 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-07 00:58:28,277 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:58:25" (3/4) ... [2021-12-07 00:58:28,278 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-07 00:58:28,278 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-07 00:58:28,279 INFO L158 Benchmark]: Toolchain (without parser) took 2830.93ms. Allocated memory was 121.6MB in the beginning and 146.8MB in the end (delta: 25.2MB). Free memory was 84.5MB in the beginning and 88.0MB in the end (delta: -3.6MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. [2021-12-07 00:58:28,279 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 121.6MB. Free memory is still 100.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-07 00:58:28,280 INFO L158 Benchmark]: CACSL2BoogieTranslator took 185.91ms. Allocated memory is still 121.6MB. Free memory was 84.3MB in the beginning and 97.2MB in the end (delta: -12.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-07 00:58:28,280 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.31ms. Allocated memory is still 121.6MB. Free memory was 97.2MB in the beginning and 95.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-07 00:58:28,280 INFO L158 Benchmark]: Boogie Preprocessor took 13.02ms. Allocated memory is still 121.6MB. Free memory was 95.7MB in the beginning and 94.7MB in the end (delta: 981.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-07 00:58:28,280 INFO L158 Benchmark]: RCFGBuilder took 187.80ms. Allocated memory is still 121.6MB. Free memory was 94.7MB in the beginning and 85.6MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-07 00:58:28,281 INFO L158 Benchmark]: BuchiAutomizer took 2415.00ms. Allocated memory was 121.6MB in the beginning and 146.8MB in the end (delta: 25.2MB). Free memory was 85.6MB in the beginning and 88.0MB in the end (delta: -2.4MB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. [2021-12-07 00:58:28,281 INFO L158 Benchmark]: Witness Printer took 2.34ms. Allocated memory is still 146.8MB. Free memory is still 88.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-07 00:58:28,283 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 121.6MB. Free memory is still 100.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 185.91ms. Allocated memory is still 121.6MB. Free memory was 84.3MB in the beginning and 97.2MB in the end (delta: -12.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.31ms. Allocated memory is still 121.6MB. Free memory was 97.2MB in the beginning and 95.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 13.02ms. Allocated memory is still 121.6MB. Free memory was 95.7MB in the beginning and 94.7MB in the end (delta: 981.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 187.80ms. Allocated memory is still 121.6MB. Free memory was 94.7MB in the beginning and 85.6MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 2415.00ms. Allocated memory was 121.6MB in the beginning and 146.8MB in the end (delta: 25.2MB). Free memory was 85.6MB in the beginning and 88.0MB in the end (delta: -2.4MB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. * Witness Printer took 2.34ms. Allocated memory is still 146.8MB. Free memory is still 88.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (3 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -1 * i + n and consists of 3 locations. One deterministic module has affine ranking function -1 * j + m and consists of 4 locations. One nondeterministic module has affine ranking function -1 * j + m and consists of 4 locations. 3 modules have a trivial ranking function, the largest among these consists of 10 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.3s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 1.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 12 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 50 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 45 mSDsluCounter, 76 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 41 IncrementalHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 63 mSDtfsCounter, 41 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT1 conc0 concLT1 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax100 hnf100 lsp65 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 16ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-12-07 00:58:28,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-12-07 00:58:28,542 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-12-07 00:58:28,742 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b5b78cf-95c3-4681-a5c6-c3d06c0d5861/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE