./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-15/array20_alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-15/array20_alloca.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash ea5bfa8a156bc44b081b7e322054bf4f8b50233fa79918ee2b9ae09354893d3a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 07:22:05,726 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 07:22:05,728 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 07:22:05,774 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 07:22:05,775 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 07:22:05,778 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 07:22:05,780 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 07:22:05,784 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 07:22:05,787 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 07:22:05,794 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 07:22:05,795 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 07:22:05,797 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 07:22:05,798 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 07:22:05,802 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 07:22:05,805 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 07:22:05,809 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 07:22:05,811 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 07:22:05,812 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 07:22:05,815 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 07:22:05,824 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 07:22:05,826 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 07:22:05,828 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 07:22:05,831 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 07:22:05,832 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 07:22:05,843 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 07:22:05,844 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 07:22:05,844 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 07:22:05,846 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 07:22:05,847 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 07:22:05,848 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 07:22:05,849 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 07:22:05,850 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 07:22:05,852 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 07:22:05,853 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 07:22:05,855 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 07:22:05,855 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 07:22:05,856 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 07:22:05,856 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 07:22:05,856 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 07:22:05,857 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 07:22:05,858 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 07:22:05,859 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-11-07 07:22:05,906 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 07:22:05,906 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 07:22:05,906 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 07:22:05,907 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 07:22:05,908 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 07:22:05,908 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 07:22:05,908 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 07:22:05,908 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-07 07:22:05,908 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-07 07:22:05,909 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-07 07:22:05,909 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-07 07:22:05,909 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-07 07:22:05,909 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-07 07:22:05,909 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 07:22:05,910 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 07:22:05,910 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 07:22:05,910 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 07:22:05,910 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-07 07:22:05,910 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-07 07:22:05,913 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-07 07:22:05,913 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 07:22:05,913 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-07 07:22:05,913 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 07:22:05,914 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-07 07:22:05,914 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 07:22:05,914 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 07:22:05,916 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 07:22:05,916 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 07:22:05,917 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 07:22:05,918 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-07 07:22:05,918 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_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ea5bfa8a156bc44b081b7e322054bf4f8b50233fa79918ee2b9ae09354893d3a [2021-11-07 07:22:06,212 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 07:22:06,248 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 07:22:06,252 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 07:22:06,255 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 07:22:06,256 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 07:22:06,257 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/termination-15/array20_alloca.i [2021-11-07 07:22:06,381 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/data/e5a6a5de6/bb34c8388eb14ee89fb1ce414915acdb/FLAG8ebf6a32c [2021-11-07 07:22:07,065 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 07:22:07,066 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/sv-benchmarks/c/termination-15/array20_alloca.i [2021-11-07 07:22:07,078 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/data/e5a6a5de6/bb34c8388eb14ee89fb1ce414915acdb/FLAG8ebf6a32c [2021-11-07 07:22:07,290 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/data/e5a6a5de6/bb34c8388eb14ee89fb1ce414915acdb [2021-11-07 07:22:07,295 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 07:22:07,296 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 07:22:07,298 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 07:22:07,299 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 07:22:07,304 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 07:22:07,305 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:22:07" (1/1) ... [2021-11-07 07:22:07,307 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57d3ec3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:07, skipping insertion in model container [2021-11-07 07:22:07,308 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:22:07" (1/1) ... [2021-11-07 07:22:07,319 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 07:22:07,355 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 07:22:07,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:22:07,809 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 07:22:07,899 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:22:07,944 INFO L208 MainTranslator]: Completed translation [2021-11-07 07:22:07,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:07 WrapperNode [2021-11-07 07:22:07,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 07:22:07,947 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 07:22:07,947 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 07:22:07,947 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 07:22:07,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:07" (1/1) ... [2021-11-07 07:22:07,989 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:07" (1/1) ... [2021-11-07 07:22:08,013 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 07:22:08,014 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 07:22:08,014 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 07:22:08,014 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 07:22:08,025 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:07" (1/1) ... [2021-11-07 07:22:08,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:07" (1/1) ... [2021-11-07 07:22:08,028 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:07" (1/1) ... [2021-11-07 07:22:08,030 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:07" (1/1) ... [2021-11-07 07:22:08,038 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:07" (1/1) ... [2021-11-07 07:22:08,051 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:07" (1/1) ... [2021-11-07 07:22:08,060 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:07" (1/1) ... [2021-11-07 07:22:08,063 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 07:22:08,070 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 07:22:08,071 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 07:22:08,071 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 07:22:08,073 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:07" (1/1) ... [2021-11-07 07:22:08,086 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 07:22:08,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:08,125 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 07:22:08,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-07 07:22:08,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 07:22:08,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 07:22:08,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 07:22:08,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 07:22:08,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 07:22:08,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 07:22:08,439 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 07:22:08,439 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-07 07:22:08,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:22:08 BoogieIcfgContainer [2021-11-07 07:22:08,442 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 07:22:08,443 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-07 07:22:08,443 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-07 07:22:08,448 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-07 07:22:08,448 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-07 07:22:08,449 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.11 07:22:07" (1/3) ... [2021-11-07 07:22:08,450 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@317f02f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.11 07:22:08, skipping insertion in model container [2021-11-07 07:22:08,451 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-07 07:22:08,451 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:07" (2/3) ... [2021-11-07 07:22:08,451 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@317f02f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.11 07:22:08, skipping insertion in model container [2021-11-07 07:22:08,452 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-07 07:22:08,452 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:22:08" (3/3) ... [2021-11-07 07:22:08,453 INFO L389 chiAutomizerObserver]: Analyzing ICFG array20_alloca.i [2021-11-07 07:22:08,508 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-07 07:22:08,508 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-07 07:22:08,508 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-07 07:22:08,508 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-07 07:22:08,508 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-07 07:22:08,509 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-07 07:22:08,509 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-07 07:22:08,509 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-07 07:22:08,526 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 14 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:08,564 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2021-11-07 07:22:08,564 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-07 07:22:08,564 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-07 07:22:08,580 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-11-07 07:22:08,580 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-07 07:22:08,580 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-07 07:22:08,581 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 14 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:08,583 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2021-11-07 07:22:08,584 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-07 07:22:08,585 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-07 07:22:08,585 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-11-07 07:22:08,585 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-07 07:22:08,595 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 9#L-1true havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~nondet208, main_#t~mem209, main_#t~post207, main_#t~mem210, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 12#L367true assume !(main_~length~0 < 1); 10#L367-2true call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 6#L369true assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 8#L370-3true [2021-11-07 07:22:08,596 INFO L793 eck$LassoCheckResult]: Loop: 8#L370-3true assume !!(main_~i~0 < main_~length~0);call write~int(main_#t~nondet208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~nondet208;call main_#t~mem209 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 13#L372true assume main_#t~mem209 < 1;havoc main_#t~mem209;call write~int(1, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 15#L370-2true main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 8#L370-3true [2021-11-07 07:22:08,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:08,610 INFO L85 PathProgramCache]: Analyzing trace with hash 28695753, now seen corresponding path program 1 times [2021-11-07 07:22:08,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:08,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135005357] [2021-11-07 07:22:08,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:08,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:08,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 07:22:08,761 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 07:22:08,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 07:22:08,800 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 07:22:08,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:08,804 INFO L85 PathProgramCache]: Analyzing trace with hash 51737, now seen corresponding path program 1 times [2021-11-07 07:22:08,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:08,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778617476] [2021-11-07 07:22:08,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:08,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:08,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 07:22:08,838 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 07:22:08,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 07:22:08,860 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 07:22:08,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:08,861 INFO L85 PathProgramCache]: Analyzing trace with hash 176707665, now seen corresponding path program 1 times [2021-11-07 07:22:08,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:08,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316853928] [2021-11-07 07:22:08,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:08,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:08,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 07:22:08,888 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 07:22:08,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 07:22:08,917 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 07:22:09,365 INFO L210 LassoAnalysis]: Preferences: [2021-11-07 07:22:09,365 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-07 07:22:09,365 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-07 07:22:09,366 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-07 07:22:09,366 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-07 07:22:09,366 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 07:22:09,366 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-07 07:22:09,366 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-07 07:22:09,367 INFO L133 ssoRankerPreferences]: Filename of dumped script: array20_alloca.i_Iteration1_Lasso [2021-11-07 07:22:09,367 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-07 07:22:09,367 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-07 07:22:09,389 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 07:22:09,396 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 07:22:09,399 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 07:22:09,402 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 07:22:09,407 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 07:22:09,410 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 07:22:09,528 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 07:22:09,531 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 07:22:09,536 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 07:22:09,541 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 07:22:09,844 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-07 07:22:09,849 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-07 07:22:09,852 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 07:22:09,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:09,859 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 07:22:09,875 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-07 07:22:09,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-11-07 07:22:09,887 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 07:22:09,888 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-07 07:22:09,888 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 07:22:09,889 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 07:22:09,889 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-07 07:22:09,891 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-07 07:22:09,891 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-07 07:22:09,902 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-07 07:22:09,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:09,947 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 07:22:09,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:09,963 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 07:22:09,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-11-07 07:22:09,984 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-07 07:22:09,996 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 07:22:09,996 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-07 07:22:09,996 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 07:22:09,996 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 07:22:09,996 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-07 07:22:09,998 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-07 07:22:09,998 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-07 07:22:10,015 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-07 07:22:10,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:10,062 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 07:22:10,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:10,065 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 07:22:10,071 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-07 07:22:10,083 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 07:22:10,083 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-07 07:22:10,084 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 07:22:10,084 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 07:22:10,084 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-07 07:22:10,086 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-07 07:22:10,086 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-07 07:22:10,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-11-07 07:22:10,107 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-07 07:22:10,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:10,150 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 07:22:10,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:10,152 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 07:22:10,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-11-07 07:22:10,162 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-07 07:22:10,174 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 07:22:10,174 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 07:22:10,174 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 07:22:10,174 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-07 07:22:10,179 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-07 07:22:10,180 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-07 07:22:10,193 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-07 07:22:10,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:10,229 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 07:22:10,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:10,230 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 07:22:10,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-11-07 07:22:10,233 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-07 07:22:10,241 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 07:22:10,241 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-07 07:22:10,241 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 07:22:10,241 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 07:22:10,241 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-07 07:22:10,242 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-07 07:22:10,242 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-07 07:22:10,261 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-07 07:22:10,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:10,284 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 07:22:10,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:10,291 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 07:22:10,302 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-07 07:22:10,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-11-07 07:22:10,313 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 07:22:10,313 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 07:22:10,313 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 07:22:10,314 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-07 07:22:10,320 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-07 07:22:10,320 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-07 07:22:10,343 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-07 07:22:10,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:10,388 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 07:22:10,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:10,389 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 07:22:10,396 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-07 07:22:10,407 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 07:22:10,408 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 07:22:10,408 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 07:22:10,408 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-07 07:22:10,414 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-07 07:22:10,414 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-07 07:22:10,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-11-07 07:22:10,435 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-07 07:22:10,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:10,479 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 07:22:10,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:10,480 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 07:22:10,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-11-07 07:22:10,487 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-07 07:22:10,498 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 07:22:10,498 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-07 07:22:10,499 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 07:22:10,499 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 07:22:10,499 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-07 07:22:10,500 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-07 07:22:10,500 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-07 07:22:10,519 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-07 07:22:10,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:10,564 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 07:22:10,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:10,567 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 07:22:10,575 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-07 07:22:10,586 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 07:22:10,587 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 07:22:10,587 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 07:22:10,587 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-07 07:22:10,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-11-07 07:22:10,608 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-07 07:22:10,608 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-07 07:22:10,636 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-07 07:22:10,683 INFO L443 ModelExtractionUtils]: Simplification made 12 calls to the SMT solver. [2021-11-07 07:22:10,684 INFO L444 ModelExtractionUtils]: 9 out of 22 variables were initially zero. Simplification set additionally 10 variables to zero. [2021-11-07 07:22:10,686 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 07:22:10,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:10,692 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 07:22:10,698 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-07 07:22:10,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-11-07 07:22:10,732 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-11-07 07:22:10,732 INFO L513 LassoAnalysis]: Proved termination. [2021-11-07 07:22:10,733 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~length~0) = -1*ULTIMATE.start_main_~i~0 + 1*ULTIMATE.start_main_~length~0 Supporting invariants [] [2021-11-07 07:22:10,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:10,787 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2021-11-07 07:22:10,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:10,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:10,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 07:22:10,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:10,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:10,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 07:22:10,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:10,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:10,979 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-11-07 07:22:10,981 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 14 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:11,047 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 14 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 32 states and 44 transitions. Complement of second has 7 states. [2021-11-07 07:22:11,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-11-07 07:22:11,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:11,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 29 transitions. [2021-11-07 07:22:11,054 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 29 transitions. Stem has 5 letters. Loop has 3 letters. [2021-11-07 07:22:11,055 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 07:22:11,055 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 29 transitions. Stem has 8 letters. Loop has 3 letters. [2021-11-07 07:22:11,056 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 07:22:11,056 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 29 transitions. Stem has 5 letters. Loop has 6 letters. [2021-11-07 07:22:11,057 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 07:22:11,061 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 44 transitions. [2021-11-07 07:22:11,075 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-11-07 07:22:11,080 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 11 states and 15 transitions. [2021-11-07 07:22:11,081 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-11-07 07:22:11,082 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-11-07 07:22:11,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 15 transitions. [2021-11-07 07:22:11,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 07:22:11,085 INFO L681 BuchiCegarLoop]: Abstraction has 11 states and 15 transitions. [2021-11-07 07:22:11,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 15 transitions. [2021-11-07 07:22:11,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-11-07 07:22:11,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:11,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 15 transitions. [2021-11-07 07:22:11,111 INFO L704 BuchiCegarLoop]: Abstraction has 11 states and 15 transitions. [2021-11-07 07:22:11,112 INFO L587 BuchiCegarLoop]: Abstraction has 11 states and 15 transitions. [2021-11-07 07:22:11,112 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-07 07:22:11,112 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 15 transitions. [2021-11-07 07:22:11,113 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-11-07 07:22:11,113 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-07 07:22:11,113 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-07 07:22:11,114 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:22:11,114 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-11-07 07:22:11,114 INFO L791 eck$LassoCheckResult]: Stem: 109#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 110#L-1 havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~nondet208, main_#t~mem209, main_#t~post207, main_#t~mem210, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 116#L367 assume !(main_~length~0 < 1); 111#L367-2 call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 112#L369 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 113#L370-3 assume !(main_~i~0 < main_~length~0); 114#L370-4 main_~j~0 := 1; 115#L377-2 [2021-11-07 07:22:11,114 INFO L793 eck$LassoCheckResult]: Loop: 115#L377-2 assume !!(1 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);main_~j~0 := main_~j~0 * main_#t~mem210;havoc main_#t~mem210; 115#L377-2 [2021-11-07 07:22:11,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:11,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1806815510, now seen corresponding path program 1 times [2021-11-07 07:22:11,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:11,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594669589] [2021-11-07 07:22:11,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:11,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:11,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:11,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:11,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:11,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594669589] [2021-11-07 07:22:11,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594669589] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:22:11,183 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:22:11,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 07:22:11,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181430364] [2021-11-07 07:22:11,186 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-07 07:22:11,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:11,187 INFO L85 PathProgramCache]: Analyzing trace with hash 73, now seen corresponding path program 1 times [2021-11-07 07:22:11,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:11,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502993355] [2021-11-07 07:22:11,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:11,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:11,194 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:22:11,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [615967161] [2021-11-07 07:22:11,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:11,195 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:11,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:11,196 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:11,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-07 07:22:11,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 07:22:11,278 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 07:22:11,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 07:22:11,285 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 07:22:11,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:11,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:22:11,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:22:11,349 INFO L87 Difference]: Start difference. First operand 11 states and 15 transitions. cyclomatic complexity: 6 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) [2021-11-07 07:22:11,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:11,382 INFO L93 Difference]: Finished difference Result 13 states and 17 transitions. [2021-11-07 07:22:11,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:22:11,383 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 17 transitions. [2021-11-07 07:22:11,384 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-11-07 07:22:11,385 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 13 states and 17 transitions. [2021-11-07 07:22:11,385 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-11-07 07:22:11,385 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-11-07 07:22:11,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 17 transitions. [2021-11-07 07:22:11,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 07:22:11,386 INFO L681 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2021-11-07 07:22:11,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 17 transitions. [2021-11-07 07:22:11,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 11. [2021-11-07 07:22:11,388 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) [2021-11-07 07:22:11,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2021-11-07 07:22:11,389 INFO L704 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2021-11-07 07:22:11,389 INFO L587 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2021-11-07 07:22:11,389 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-11-07 07:22:11,389 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 14 transitions. [2021-11-07 07:22:11,390 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-11-07 07:22:11,390 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-07 07:22:11,390 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-07 07:22:11,391 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:22:11,391 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-11-07 07:22:11,391 INFO L791 eck$LassoCheckResult]: Stem: 142#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 143#L-1 havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~nondet208, main_#t~mem209, main_#t~post207, main_#t~mem210, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 147#L367 assume !(main_~length~0 < 1); 140#L367-2 call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 141#L369 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 144#L370-3 assume !!(main_~i~0 < main_~length~0);call write~int(main_#t~nondet208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~nondet208;call main_#t~mem209 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 148#L372 assume !(main_#t~mem209 < 1);havoc main_#t~mem209; 150#L370-2 main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 149#L370-3 assume !(main_~i~0 < main_~length~0); 145#L370-4 main_~j~0 := 1; 146#L377-2 [2021-11-07 07:22:11,392 INFO L793 eck$LassoCheckResult]: Loop: 146#L377-2 assume !!(1 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);main_~j~0 := main_~j~0 * main_#t~mem210;havoc main_#t~mem210; 146#L377-2 [2021-11-07 07:22:11,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:11,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1982565540, now seen corresponding path program 1 times [2021-11-07 07:22:11,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:11,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020604739] [2021-11-07 07:22:11,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:11,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:11,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 07:22:11,436 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 07:22:11,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 07:22:11,474 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 07:22:11,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:11,480 INFO L85 PathProgramCache]: Analyzing trace with hash 73, now seen corresponding path program 2 times [2021-11-07 07:22:11,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:11,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699689242] [2021-11-07 07:22:11,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:11,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:11,486 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:22:11,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1897342802] [2021-11-07 07:22:11,486 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:22:11,487 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:11,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:11,522 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:11,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-07 07:22:11,574 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 07:22:11,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-11-07 07:22:11,575 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 07:22:11,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 07:22:11,585 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 07:22:11,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:11,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1329989554, now seen corresponding path program 1 times [2021-11-07 07:22:11,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:11,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807833660] [2021-11-07 07:22:11,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:11,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:11,600 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:22:11,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [154440313] [2021-11-07 07:22:11,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:11,609 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:11,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:11,611 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:11,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-07 07:22:11,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:11,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 07:22:11,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:11,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:11,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:11,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807833660] [2021-11-07 07:22:11,821 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:22:11,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154440313] [2021-11-07 07:22:11,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154440313] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:11,822 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:22:11,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-11-07 07:22:11,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503665503] [2021-11-07 07:22:11,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:11,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 07:22:11,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:22:11,907 INFO L87 Difference]: Start difference. First operand 11 states and 14 transitions. cyclomatic complexity: 5 Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:12,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:12,006 INFO L93 Difference]: Finished difference Result 24 states and 31 transitions. [2021-11-07 07:22:12,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 07:22:12,007 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 31 transitions. [2021-11-07 07:22:12,013 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-11-07 07:22:12,015 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 16 states and 20 transitions. [2021-11-07 07:22:12,016 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-11-07 07:22:12,016 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-11-07 07:22:12,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 20 transitions. [2021-11-07 07:22:12,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 07:22:12,017 INFO L681 BuchiCegarLoop]: Abstraction has 16 states and 20 transitions. [2021-11-07 07:22:12,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 20 transitions. [2021-11-07 07:22:12,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2021-11-07 07:22:12,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:12,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2021-11-07 07:22:12,020 INFO L704 BuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2021-11-07 07:22:12,020 INFO L587 BuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2021-11-07 07:22:12,020 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-11-07 07:22:12,020 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 17 transitions. [2021-11-07 07:22:12,024 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-11-07 07:22:12,024 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-07 07:22:12,024 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-07 07:22:12,025 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:22:12,025 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-11-07 07:22:12,025 INFO L791 eck$LassoCheckResult]: Stem: 222#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 223#L-1 havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~nondet208, main_#t~mem209, main_#t~post207, main_#t~mem210, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 229#L367 assume !(main_~length~0 < 1); 224#L367-2 call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 225#L369 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 226#L370-3 assume !!(main_~i~0 < main_~length~0);call write~int(main_#t~nondet208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~nondet208;call main_#t~mem209 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 230#L372 assume !(main_#t~mem209 < 1);havoc main_#t~mem209; 235#L370-2 main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 231#L370-3 assume !!(main_~i~0 < main_~length~0);call write~int(main_#t~nondet208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~nondet208;call main_#t~mem209 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 232#L372 assume !(main_#t~mem209 < 1);havoc main_#t~mem209; 233#L370-2 main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 234#L370-3 assume !(main_~i~0 < main_~length~0); 227#L370-4 main_~j~0 := 1; 228#L377-2 [2021-11-07 07:22:12,025 INFO L793 eck$LassoCheckResult]: Loop: 228#L377-2 assume !!(1 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);main_~j~0 := main_~j~0 * main_#t~mem210;havoc main_#t~mem210; 228#L377-2 [2021-11-07 07:22:12,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:12,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1781949270, now seen corresponding path program 2 times [2021-11-07 07:22:12,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:12,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657074772] [2021-11-07 07:22:12,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:12,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:12,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 07:22:12,066 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 07:22:12,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 07:22:12,140 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 07:22:12,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:12,144 INFO L85 PathProgramCache]: Analyzing trace with hash 73, now seen corresponding path program 3 times [2021-11-07 07:22:12,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:12,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648235706] [2021-11-07 07:22:12,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:12,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:12,148 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:22:12,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1632333033] [2021-11-07 07:22:12,157 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:22:12,157 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:12,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:12,159 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:12,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:12,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-07 07:22:12,222 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-07 07:22:12,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-11-07 07:22:12,222 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 07:22:12,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 07:22:12,230 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 07:22:12,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:12,231 INFO L85 PathProgramCache]: Analyzing trace with hash -594147436, now seen corresponding path program 2 times [2021-11-07 07:22:12,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:12,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135812109] [2021-11-07 07:22:12,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:12,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:12,252 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:22:12,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1195011112] [2021-11-07 07:22:12,258 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:22:12,258 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:12,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:12,259 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:12,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-07 07:22:12,329 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:22:12,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-11-07 07:22:12,329 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 07:22:12,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 07:22:12,359 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 07:22:12,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.11 07:22:12 BoogieIcfgContainer [2021-11-07 07:22:12,818 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-07 07:22:12,818 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 07:22:12,818 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 07:22:12,819 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 07:22:12,819 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:22:08" (3/4) ... [2021-11-07 07:22:12,821 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-11-07 07:22:12,861 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2429f6-4fa2-4c2b-87c7-f0ae1e3babc0/bin/uautomizer-AkOaLMaTGY/witness.graphml [2021-11-07 07:22:12,861 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 07:22:12,863 INFO L168 Benchmark]: Toolchain (without parser) took 5565.00 ms. Allocated memory was 107.0 MB in the beginning and 140.5 MB in the end (delta: 33.6 MB). Free memory was 74.2 MB in the beginning and 79.2 MB in the end (delta: -5.0 MB). Peak memory consumption was 26.8 MB. Max. memory is 16.1 GB. [2021-11-07 07:22:12,864 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 107.0 MB. Free memory is still 62.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 07:22:12,865 INFO L168 Benchmark]: CACSL2BoogieTranslator took 647.52 ms. Allocated memory was 107.0 MB in the beginning and 140.5 MB in the end (delta: 33.6 MB). Free memory was 73.9 MB in the beginning and 105.8 MB in the end (delta: -31.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-07 07:22:12,865 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.69 ms. Allocated memory is still 140.5 MB. Free memory was 105.8 MB in the beginning and 103.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 07:22:12,866 INFO L168 Benchmark]: Boogie Preprocessor took 55.35 ms. Allocated memory is still 140.5 MB. Free memory was 103.7 MB in the beginning and 102.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 07:22:12,866 INFO L168 Benchmark]: RCFGBuilder took 371.32 ms. Allocated memory is still 140.5 MB. Free memory was 102.6 MB in the beginning and 92.7 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 07:22:12,867 INFO L168 Benchmark]: BuchiAutomizer took 4375.01 ms. Allocated memory is still 140.5 MB. Free memory was 92.7 MB in the beginning and 80.3 MB in the end (delta: 12.4 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB. [2021-11-07 07:22:12,867 INFO L168 Benchmark]: Witness Printer took 42.45 ms. Allocated memory is still 140.5 MB. Free memory was 80.3 MB in the beginning and 79.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 07:22:12,872 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 107.0 MB. Free memory is still 62.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 647.52 ms. Allocated memory was 107.0 MB in the beginning and 140.5 MB in the end (delta: 33.6 MB). Free memory was 73.9 MB in the beginning and 105.8 MB in the end (delta: -31.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 66.69 ms. Allocated memory is still 140.5 MB. Free memory was 105.8 MB in the beginning and 103.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 55.35 ms. Allocated memory is still 140.5 MB. Free memory was 103.7 MB in the beginning and 102.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 371.32 ms. Allocated memory is still 140.5 MB. Free memory was 102.6 MB in the beginning and 92.7 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 4375.01 ms. Allocated memory is still 140.5 MB. Free memory was 92.7 MB in the beginning and 80.3 MB in the end (delta: 12.4 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB. * Witness Printer took 42.45 ms. Allocated memory is still 140.5 MB. Free memory was 80.3 MB in the beginning and 79.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (2 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function length + -1 * i and consists of 5 locations. 2 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 14 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.3s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 3.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 14 states and ocurred in iteration 3. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 29 SDtfs, 50 SDslu, 28 SDs, 0 SdLazy, 63 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc1 concLT0 SILN0 SILU1 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital102 mio100 ax100 hnf100 lsp91 ukn82 mio100 lsp64 div100 bol100 ite100 ukn100 eq167 hnf91 smp100 dnf100 smp100 tf100 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 42ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 377]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {NULL=0, \result=0, NULL=1, arr=2, arr=0, i=2, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@47a7fade=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@572030e=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@193925c2=0, length=2, org.eclipse.cdt.internal.core.dom.parser.c.CASTArraySubscriptExpression@273e5d15=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@193925c2=2, j=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTArraySubscriptExpression@7ebcc64f=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@31696df2=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 377]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L365] int i, j; [L366] int length = __VERIFIER_nondet_int(); [L367] COND FALSE !(length < 1) [L368] int *arr = __builtin_alloca(length*sizeof(int)); [L369] COND FALSE !(!arr) [L370] i=0 [L370] COND TRUE i