./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/NO_04.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdbde82-986a-45e5-af88-389d948686ae/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdbde82-986a-45e5-af88-389d948686ae/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdbde82-986a-45e5-af88-389d948686ae/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdbde82-986a-45e5-af88-389d948686ae/bin/uautomizer-DrprNOufMa/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/NO_04.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdbde82-986a-45e5-af88-389d948686ae/bin/uautomizer-DrprNOufMa/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdbde82-986a-45e5-af88-389d948686ae/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 26441cee42562e2fd703b97b1a86d2baa847af9810285d31267fccda11d2ea67 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 00:24:03,489 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 00:24:03,491 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 00:24:03,513 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 00:24:03,513 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 00:24:03,514 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 00:24:03,515 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 00:24:03,517 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 00:24:03,519 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 00:24:03,519 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 00:24:03,520 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 00:24:03,521 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 00:24:03,521 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 00:24:03,522 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 00:24:03,523 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 00:24:03,524 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 00:24:03,525 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 00:24:03,526 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 00:24:03,527 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 00:24:03,529 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 00:24:03,531 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 00:24:03,532 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 00:24:03,533 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 00:24:03,534 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 00:24:03,536 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 00:24:03,537 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 00:24:03,537 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 00:24:03,538 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 00:24:03,538 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 00:24:03,539 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 00:24:03,539 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 00:24:03,540 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 00:24:03,541 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 00:24:03,541 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 00:24:03,542 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 00:24:03,542 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 00:24:03,543 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 00:24:03,543 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 00:24:03,544 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 00:24:03,544 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 00:24:03,545 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 00:24:03,546 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdbde82-986a-45e5-af88-389d948686ae/bin/uautomizer-DrprNOufMa/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-07 00:24:03,564 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 00:24:03,565 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 00:24:03,565 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 00:24:03,565 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 00:24:03,566 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 00:24:03,566 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 00:24:03,566 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 00:24:03,566 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-07 00:24:03,566 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-07 00:24:03,566 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-07 00:24:03,566 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-07 00:24:03,567 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-07 00:24:03,567 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-07 00:24:03,567 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 00:24:03,567 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-07 00:24:03,567 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 00:24:03,567 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 00:24:03,567 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-07 00:24:03,567 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-07 00:24:03,567 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-07 00:24:03,567 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 00:24:03,568 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-07 00:24:03,568 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 00:24:03,568 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-07 00:24:03,568 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 00:24:03,568 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 00:24:03,568 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 00:24:03,568 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 00:24:03,568 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 00:24:03,573 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-07 00:24:03,574 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_6fdbde82-986a-45e5-af88-389d948686ae/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdbde82-986a-45e5-af88-389d948686ae/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26441cee42562e2fd703b97b1a86d2baa847af9810285d31267fccda11d2ea67 [2021-12-07 00:24:03,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 00:24:03,757 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 00:24:03,759 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 00:24:03,760 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 00:24:03,760 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 00:24:03,761 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdbde82-986a-45e5-af88-389d948686ae/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/termination-restricted-15/NO_04.c [2021-12-07 00:24:03,804 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdbde82-986a-45e5-af88-389d948686ae/bin/uautomizer-DrprNOufMa/data/505240efa/da949ec9f46142a5a9619f75a0d2e6de/FLAG1cc7f0cc0 [2021-12-07 00:24:04,211 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 00:24:04,212 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdbde82-986a-45e5-af88-389d948686ae/sv-benchmarks/c/termination-restricted-15/NO_04.c [2021-12-07 00:24:04,216 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdbde82-986a-45e5-af88-389d948686ae/bin/uautomizer-DrprNOufMa/data/505240efa/da949ec9f46142a5a9619f75a0d2e6de/FLAG1cc7f0cc0 [2021-12-07 00:24:04,599 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdbde82-986a-45e5-af88-389d948686ae/bin/uautomizer-DrprNOufMa/data/505240efa/da949ec9f46142a5a9619f75a0d2e6de [2021-12-07 00:24:04,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 00:24:04,602 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 00:24:04,604 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 00:24:04,604 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 00:24:04,607 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 00:24:04,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:24:04" (1/1) ... [2021-12-07 00:24:04,609 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a84e2ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:24:04, skipping insertion in model container [2021-12-07 00:24:04,609 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:24:04" (1/1) ... [2021-12-07 00:24:04,616 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 00:24:04,628 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 00:24:04,739 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:24:04,742 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 00:24:04,752 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:24:04,760 INFO L208 MainTranslator]: Completed translation [2021-12-07 00:24:04,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:24:04 WrapperNode [2021-12-07 00:24:04,761 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 00:24:04,761 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 00:24:04,762 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 00:24:04,762 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 00:24:04,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:24:04" (1/1) ... [2021-12-07 00:24:04,770 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:24:04" (1/1) ... [2021-12-07 00:24:04,782 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 43 [2021-12-07 00:24:04,782 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 00:24:04,783 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 00:24:04,783 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 00:24:04,783 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 00:24:04,788 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:24:04" (1/1) ... [2021-12-07 00:24:04,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:24:04" (1/1) ... [2021-12-07 00:24:04,789 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:24:04" (1/1) ... [2021-12-07 00:24:04,789 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:24:04" (1/1) ... [2021-12-07 00:24:04,790 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:24:04" (1/1) ... [2021-12-07 00:24:04,793 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:24:04" (1/1) ... [2021-12-07 00:24:04,794 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:24:04" (1/1) ... [2021-12-07 00:24:04,795 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 00:24:04,795 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 00:24:04,795 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 00:24:04,796 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 00:24:04,796 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:24:04" (1/1) ... [2021-12-07 00:24:04,802 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:24:04,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdbde82-986a-45e5-af88-389d948686ae/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:24:04,819 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdbde82-986a-45e5-af88-389d948686ae/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:24:04,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdbde82-986a-45e5-af88-389d948686ae/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-07 00:24:04,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 00:24:04,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 00:24:04,890 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 00:24:04,891 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 00:24:04,953 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 00:24:04,960 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 00:24:04,960 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-12-07 00:24:04,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:24:04 BoogieIcfgContainer [2021-12-07 00:24:04,962 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 00:24:04,963 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-07 00:24:04,963 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-07 00:24:04,966 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-07 00:24:04,967 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-07 00:24:04,967 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 12:24:04" (1/3) ... [2021-12-07 00:24:04,968 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@74ab21ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 12:24:04, skipping insertion in model container [2021-12-07 00:24:04,968 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-07 00:24:04,968 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:24:04" (2/3) ... [2021-12-07 00:24:04,969 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@74ab21ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 12:24:04, skipping insertion in model container [2021-12-07 00:24:04,969 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-07 00:24:04,969 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:24:04" (3/3) ... [2021-12-07 00:24:04,970 INFO L388 chiAutomizerObserver]: Analyzing ICFG NO_04.c [2021-12-07 00:24:05,008 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-07 00:24:05,009 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-07 00:24:05,009 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-07 00:24:05,009 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-07 00:24:05,009 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-07 00:24:05,009 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-07 00:24:05,009 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-07 00:24:05,009 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-07 00:24:05,022 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:24:05,038 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-12-07 00:24:05,038 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-07 00:24:05,038 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-07 00:24:05,043 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-07 00:24:05,043 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-07 00:24:05,044 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-07 00:24:05,044 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:24:05,045 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-12-07 00:24:05,045 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-07 00:24:05,046 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-07 00:24:05,046 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-07 00:24:05,046 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-07 00:24:05,051 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~l~0#1, main_~m~0#1, main_~a~0#1, main_~b~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~l~0#1;havoc main_~m~0#1;havoc main_~a~0#1;havoc main_~b~0#1;main_~i~0#1 := 0; 8#L15-2true [2021-12-07 00:24:05,051 INFO L793 eck$LassoCheckResult]: Loop: 8#L15-2true assume !!(main_~i~0#1 < 100);main_~a~0#1 := 2 + main_~i~0#1;main_~j~0#1 := 0; 11#L18-2true assume !(main_~j~0#1 < main_~a~0#1); 13#L18-3true main_~i~0#1 := 1 + main_~i~0#1; 8#L15-2true [2021-12-07 00:24:05,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:24:05,056 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-07 00:24:05,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:24:05,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405117889] [2021-12-07 00:24:05,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:24:05,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:24:05,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:24:05,125 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:24:05,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:24:05,140 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:24:05,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:24:05,142 INFO L85 PathProgramCache]: Analyzing trace with hash 40983, now seen corresponding path program 1 times [2021-12-07 00:24:05,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:24:05,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879620842] [2021-12-07 00:24:05,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:24:05,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:24:05,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:24:05,156 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:24:05,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:24:05,164 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:24:05,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:24:05,166 INFO L85 PathProgramCache]: Analyzing trace with hash 28699925, now seen corresponding path program 1 times [2021-12-07 00:24:05,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:24:05,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915658875] [2021-12-07 00:24:05,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:24:05,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:24:05,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:24:05,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:24:05,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:24:05,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915658875] [2021-12-07 00:24:05,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915658875] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:24:05,235 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:24:05,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:24:05,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955731354] [2021-12-07 00:24:05,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:24:05,295 INFO L210 LassoAnalysis]: Preferences: [2021-12-07 00:24:05,296 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-07 00:24:05,296 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-07 00:24:05,296 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-07 00:24:05,297 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-07 00:24:05,297 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:24:05,297 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-07 00:24:05,297 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-07 00:24:05,297 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_04.c_Iteration1_Loop [2021-12-07 00:24:05,297 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-07 00:24:05,298 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-07 00:24:05,315 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:24:05,322 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:24:05,325 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:24:05,389 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-07 00:24:05,390 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-07 00:24:05,392 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:24:05,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdbde82-986a-45e5-af88-389d948686ae/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:24:05,393 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdbde82-986a-45e5-af88-389d948686ae/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:24:05,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdbde82-986a-45e5-af88-389d948686ae/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-12-07 00:24:05,394 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-07 00:24:05,394 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:24:05,411 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-07 00:24:05,411 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-07 00:24:05,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdbde82-986a-45e5-af88-389d948686ae/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-12-07 00:24:05,430 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:24:05,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdbde82-986a-45e5-af88-389d948686ae/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:24:05,431 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdbde82-986a-45e5-af88-389d948686ae/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:24:05,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdbde82-986a-45e5-af88-389d948686ae/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-12-07 00:24:05,433 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-07 00:24:05,433 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:24:05,445 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-07 00:24:05,445 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-07 00:24:05,464 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdbde82-986a-45e5-af88-389d948686ae/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2021-12-07 00:24:05,464 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:24:05,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdbde82-986a-45e5-af88-389d948686ae/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:24:05,465 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdbde82-986a-45e5-af88-389d948686ae/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:24:05,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdbde82-986a-45e5-af88-389d948686ae/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-12-07 00:24:05,466 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-07 00:24:05,466 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:24:05,493 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdbde82-986a-45e5-af88-389d948686ae/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2021-12-07 00:24:05,494 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:24:05,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdbde82-986a-45e5-af88-389d948686ae/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:24:05,495 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdbde82-986a-45e5-af88-389d948686ae/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:24:05,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdbde82-986a-45e5-af88-389d948686ae/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-12-07 00:24:05,496 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-07 00:24:05,496 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:24:05,768 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-07 00:24:05,770 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdbde82-986a-45e5-af88-389d948686ae/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2021-12-07 00:24:05,771 INFO L210 LassoAnalysis]: Preferences: [2021-12-07 00:24:05,771 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-07 00:24:05,771 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-07 00:24:05,771 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-07 00:24:05,771 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-07 00:24:05,771 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:24:05,771 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-07 00:24:05,771 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-07 00:24:05,771 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_04.c_Iteration1_Loop [2021-12-07 00:24:05,771 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-07 00:24:05,771 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-07 00:24:05,773 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:24:05,775 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:24:05,777 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:24:05,813 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-07 00:24:05,816 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-07 00:24:05,817 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:24:05,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdbde82-986a-45e5-af88-389d948686ae/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:24:05,818 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdbde82-986a-45e5-af88-389d948686ae/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:24:05,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdbde82-986a-45e5-af88-389d948686ae/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-12-07 00:24:05,819 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-07 00:24:05,826 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:24:05,826 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:24:05,827 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 00:24:05,827 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:24:05,831 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-07 00:24:05,831 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-07 00:24:05,839 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 00:24:05,857 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdbde82-986a-45e5-af88-389d948686ae/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2021-12-07 00:24:05,858 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:24:05,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdbde82-986a-45e5-af88-389d948686ae/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:24:05,858 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdbde82-986a-45e5-af88-389d948686ae/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:24:05,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdbde82-986a-45e5-af88-389d948686ae/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-12-07 00:24:05,860 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-07 00:24:05,866 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:24:05,866 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:24:05,867 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 00:24:05,867 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:24:05,869 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-07 00:24:05,869 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-07 00:24:05,872 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 00:24:05,891 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdbde82-986a-45e5-af88-389d948686ae/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2021-12-07 00:24:05,891 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:24:05,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdbde82-986a-45e5-af88-389d948686ae/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:24:05,892 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdbde82-986a-45e5-af88-389d948686ae/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:24:05,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdbde82-986a-45e5-af88-389d948686ae/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-12-07 00:24:05,893 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-07 00:24:05,900 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:24:05,900 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-07 00:24:05,901 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:24:05,901 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 00:24:05,901 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:24:05,902 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-07 00:24:05,902 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-07 00:24:05,904 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-07 00:24:05,908 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-07 00:24:05,908 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-07 00:24:05,909 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:24:05,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdbde82-986a-45e5-af88-389d948686ae/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:24:05,912 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdbde82-986a-45e5-af88-389d948686ae/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:24:05,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdbde82-986a-45e5-af88-389d948686ae/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-12-07 00:24:05,920 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-07 00:24:05,920 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-07 00:24:05,921 INFO L513 LassoAnalysis]: Proved termination. [2021-12-07 00:24:05,921 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2021-12-07 00:24:05,939 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdbde82-986a-45e5-af88-389d948686ae/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2021-12-07 00:24:05,941 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-07 00:24:05,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:24:05,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:24:05,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 00:24:05,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:24:05,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:24:05,969 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-07 00:24:05,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:24:06,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:24:06,034 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-07 00:24:06,035 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 15 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:24:06,100 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 15 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 61 states and 103 transitions. Complement of second has 9 states. [2021-12-07 00:24:06,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-12-07 00:24:06,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:24:06,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 65 transitions. [2021-12-07 00:24:06,107 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 65 transitions. Stem has 2 letters. Loop has 3 letters. [2021-12-07 00:24:06,107 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:24:06,108 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 65 transitions. Stem has 5 letters. Loop has 3 letters. [2021-12-07 00:24:06,108 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:24:06,108 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 65 transitions. Stem has 2 letters. Loop has 6 letters. [2021-12-07 00:24:06,108 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:24:06,109 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 61 states and 103 transitions. [2021-12-07 00:24:06,112 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-12-07 00:24:06,115 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 61 states to 38 states and 55 transitions. [2021-12-07 00:24:06,115 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2021-12-07 00:24:06,116 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2021-12-07 00:24:06,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 55 transitions. [2021-12-07 00:24:06,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-07 00:24:06,116 INFO L681 BuchiCegarLoop]: Abstraction has 38 states and 55 transitions. [2021-12-07 00:24:06,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states and 55 transitions. [2021-12-07 00:24:06,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 25. [2021-12-07 00:24:06,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 25 states have (on average 1.44) internal successors, (36), 24 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:24:06,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 36 transitions. [2021-12-07 00:24:06,135 INFO L704 BuchiCegarLoop]: Abstraction has 25 states and 36 transitions. [2021-12-07 00:24:06,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:24:06,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:24:06,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:24:06,138 INFO L87 Difference]: Start difference. First operand 25 states and 36 transitions. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:24:06,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:24:06,160 INFO L93 Difference]: Finished difference Result 35 states and 50 transitions. [2021-12-07 00:24:06,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:24:06,161 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 50 transitions. [2021-12-07 00:24:06,162 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-12-07 00:24:06,163 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 19 states and 26 transitions. [2021-12-07 00:24:06,163 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2021-12-07 00:24:06,163 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2021-12-07 00:24:06,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 26 transitions. [2021-12-07 00:24:06,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 00:24:06,163 INFO L681 BuchiCegarLoop]: Abstraction has 19 states and 26 transitions. [2021-12-07 00:24:06,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 26 transitions. [2021-12-07 00:24:06,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 12. [2021-12-07 00:24:06,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:24:06,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2021-12-07 00:24:06,164 INFO L704 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2021-12-07 00:24:06,165 INFO L587 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2021-12-07 00:24:06,165 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-07 00:24:06,165 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 16 transitions. [2021-12-07 00:24:06,165 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-12-07 00:24:06,165 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-07 00:24:06,165 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-07 00:24:06,165 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-07 00:24:06,165 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-12-07 00:24:06,166 INFO L791 eck$LassoCheckResult]: Stem: 189#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 190#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~l~0#1, main_~m~0#1, main_~a~0#1, main_~b~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~l~0#1;havoc main_~m~0#1;havoc main_~a~0#1;havoc main_~b~0#1;main_~i~0#1 := 0; 196#L15-2 [2021-12-07 00:24:06,166 INFO L793 eck$LassoCheckResult]: Loop: 196#L15-2 assume !!(main_~i~0#1 < 100);main_~a~0#1 := 2 + main_~i~0#1;main_~j~0#1 := 0; 193#L18-2 assume !!(main_~j~0#1 < main_~a~0#1);main_~k~0#1 := 3 + (main_~i~0#1 + main_~j~0#1); 194#L20-2 assume !(main_~k~0#1 >= 0); 197#L20-3 main_~j~0#1 := 1 + main_~j~0#1; 198#L18-2 assume !(main_~j~0#1 < main_~a~0#1); 195#L18-3 main_~i~0#1 := 1 + main_~i~0#1; 196#L15-2 [2021-12-07 00:24:06,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:24:06,166 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2021-12-07 00:24:06,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:24:06,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450444587] [2021-12-07 00:24:06,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:24:06,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:24:06,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:24:06,169 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:24:06,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:24:06,171 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:24:06,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:24:06,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1221756439, now seen corresponding path program 1 times [2021-12-07 00:24:06,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:24:06,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685148514] [2021-12-07 00:24:06,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:24:06,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:24:06,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:24:06,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:24:06,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:24:06,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685148514] [2021-12-07 00:24:06,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685148514] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:24:06,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:24:06,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:24:06,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839132685] [2021-12-07 00:24:06,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:24:06,193 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-07 00:24:06,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:24:06,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:24:06,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:24:06,193 INFO L87 Difference]: Start difference. First operand 12 states and 16 transitions. cyclomatic complexity: 5 Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:24:06,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:24:06,214 INFO L93 Difference]: Finished difference Result 18 states and 24 transitions. [2021-12-07 00:24:06,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:24:06,215 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 24 transitions. [2021-12-07 00:24:06,215 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 15 [2021-12-07 00:24:06,216 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 18 states and 24 transitions. [2021-12-07 00:24:06,216 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2021-12-07 00:24:06,216 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2021-12-07 00:24:06,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 24 transitions. [2021-12-07 00:24:06,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 00:24:06,216 INFO L681 BuchiCegarLoop]: Abstraction has 18 states and 24 transitions. [2021-12-07 00:24:06,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 24 transitions. [2021-12-07 00:24:06,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 13. [2021-12-07 00:24:06,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 12 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) [2021-12-07 00:24:06,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2021-12-07 00:24:06,217 INFO L704 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2021-12-07 00:24:06,218 INFO L587 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2021-12-07 00:24:06,218 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-07 00:24:06,218 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 17 transitions. [2021-12-07 00:24:06,218 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2021-12-07 00:24:06,218 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-07 00:24:06,218 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-07 00:24:06,218 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-07 00:24:06,218 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:24:06,218 INFO L791 eck$LassoCheckResult]: Stem: 228#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 229#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~l~0#1, main_~m~0#1, main_~a~0#1, main_~b~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~l~0#1;havoc main_~m~0#1;havoc main_~a~0#1;havoc main_~b~0#1;main_~i~0#1 := 0; 237#L15-2 [2021-12-07 00:24:06,219 INFO L793 eck$LassoCheckResult]: Loop: 237#L15-2 assume !!(main_~i~0#1 < 100);main_~a~0#1 := 2 + main_~i~0#1;main_~j~0#1 := 0; 230#L18-2 assume !!(main_~j~0#1 < main_~a~0#1);main_~k~0#1 := 3 + (main_~i~0#1 + main_~j~0#1); 231#L20-2 assume !!(main_~k~0#1 >= 0);main_~b~0#1 := 4 + (main_~i~0#1 + main_~j~0#1 + main_~k~0#1);main_~l~0#1 := 0; 232#L23-2 assume !(main_~l~0#1 < main_~b~0#1); 233#L23-3 main_~k~0#1 := main_~k~0#1 - 1; 238#L20-2 assume !(main_~k~0#1 >= 0); 234#L20-3 main_~j~0#1 := 1 + main_~j~0#1; 235#L18-2 assume !(main_~j~0#1 < main_~a~0#1); 236#L18-3 main_~i~0#1 := 1 + main_~i~0#1; 237#L15-2 [2021-12-07 00:24:06,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:24:06,219 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2021-12-07 00:24:06,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:24:06,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467886170] [2021-12-07 00:24:06,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:24:06,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:24:06,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:24:06,222 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:24:06,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:24:06,224 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:24:06,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:24:06,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1352067341, now seen corresponding path program 1 times [2021-12-07 00:24:06,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:24:06,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828698447] [2021-12-07 00:24:06,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:24:06,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:24:06,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:24:06,246 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:24:06,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:24:06,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828698447] [2021-12-07 00:24:06,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828698447] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:24:06,247 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:24:06,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:24:06,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834405711] [2021-12-07 00:24:06,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:24:06,247 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-07 00:24:06,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:24:06,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:24:06,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:24:06,248 INFO L87 Difference]: Start difference. First operand 13 states and 17 transitions. cyclomatic complexity: 5 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:24:06,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:24:06,271 INFO L93 Difference]: Finished difference Result 15 states and 19 transitions. [2021-12-07 00:24:06,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:24:06,271 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 19 transitions. [2021-12-07 00:24:06,272 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-12-07 00:24:06,272 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 15 states and 19 transitions. [2021-12-07 00:24:06,272 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2021-12-07 00:24:06,273 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2021-12-07 00:24:06,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 19 transitions. [2021-12-07 00:24:06,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 00:24:06,273 INFO L681 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2021-12-07 00:24:06,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 19 transitions. [2021-12-07 00:24:06,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2021-12-07 00:24:06,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:24:06,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 18 transitions. [2021-12-07 00:24:06,274 INFO L704 BuchiCegarLoop]: Abstraction has 14 states and 18 transitions. [2021-12-07 00:24:06,274 INFO L587 BuchiCegarLoop]: Abstraction has 14 states and 18 transitions. [2021-12-07 00:24:06,274 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-07 00:24:06,274 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 18 transitions. [2021-12-07 00:24:06,275 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-12-07 00:24:06,275 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-07 00:24:06,275 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-07 00:24:06,275 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-07 00:24:06,275 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:24:06,275 INFO L791 eck$LassoCheckResult]: Stem: 265#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 266#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~l~0#1, main_~m~0#1, main_~a~0#1, main_~b~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~l~0#1;havoc main_~m~0#1;havoc main_~a~0#1;havoc main_~b~0#1;main_~i~0#1 := 0; 273#L15-2 [2021-12-07 00:24:06,275 INFO L793 eck$LassoCheckResult]: Loop: 273#L15-2 assume !!(main_~i~0#1 < 100);main_~a~0#1 := 2 + main_~i~0#1;main_~j~0#1 := 0; 268#L18-2 assume !!(main_~j~0#1 < main_~a~0#1);main_~k~0#1 := 3 + (main_~i~0#1 + main_~j~0#1); 269#L20-2 assume !!(main_~k~0#1 >= 0);main_~b~0#1 := 4 + (main_~i~0#1 + main_~j~0#1 + main_~k~0#1);main_~l~0#1 := 0; 267#L23-2 assume !!(main_~l~0#1 < main_~b~0#1);main_~m~0#1 := 1000 + (main_~i~0#1 + main_~j~0#1 + main_~k~0#1 + main_~l~0#1); 263#L25-2 assume !(main_~m~0#1 >= 0); 264#L25-3 main_~l~0#1 := 1 + main_~l~0#1; 274#L23-2 assume !(main_~l~0#1 < main_~b~0#1); 275#L23-3 main_~k~0#1 := main_~k~0#1 - 1; 276#L20-2 assume !(main_~k~0#1 >= 0); 270#L20-3 main_~j~0#1 := 1 + main_~j~0#1; 271#L18-2 assume !(main_~j~0#1 < main_~a~0#1); 272#L18-3 main_~i~0#1 := 1 + main_~i~0#1; 273#L15-2 [2021-12-07 00:24:06,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:24:06,276 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2021-12-07 00:24:06,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:24:06,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201324313] [2021-12-07 00:24:06,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:24:06,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:24:06,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:24:06,279 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:24:06,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:24:06,281 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:24:06,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:24:06,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1603093127, now seen corresponding path program 1 times [2021-12-07 00:24:06,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:24:06,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833856005] [2021-12-07 00:24:06,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:24:06,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:24:06,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:24:06,312 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:24:06,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:24:06,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833856005] [2021-12-07 00:24:06,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833856005] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:24:06,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:24:06,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 00:24:06,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224025689] [2021-12-07 00:24:06,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:24:06,314 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-07 00:24:06,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:24:06,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:24:06,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:24:06,315 INFO L87 Difference]: Start difference. First operand 14 states and 18 transitions. cyclomatic complexity: 5 Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:24:06,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:24:06,333 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2021-12-07 00:24:06,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 00:24:06,334 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7 states and 7 transitions. [2021-12-07 00:24:06,334 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-07 00:24:06,334 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7 states to 7 states and 7 transitions. [2021-12-07 00:24:06,335 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-12-07 00:24:06,335 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-12-07 00:24:06,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 7 transitions. [2021-12-07 00:24:06,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 00:24:06,335 INFO L681 BuchiCegarLoop]: Abstraction has 7 states and 7 transitions. [2021-12-07 00:24:06,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 7 transitions. [2021-12-07 00:24:06,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-12-07 00:24:06,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.0) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:24:06,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2021-12-07 00:24:06,336 INFO L704 BuchiCegarLoop]: Abstraction has 7 states and 7 transitions. [2021-12-07 00:24:06,336 INFO L587 BuchiCegarLoop]: Abstraction has 7 states and 7 transitions. [2021-12-07 00:24:06,336 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-07 00:24:06,336 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 7 transitions. [2021-12-07 00:24:06,337 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-07 00:24:06,337 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-07 00:24:06,337 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-07 00:24:06,337 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-12-07 00:24:06,337 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-12-07 00:24:06,337 INFO L791 eck$LassoCheckResult]: Stem: 297#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 298#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~l~0#1, main_~m~0#1, main_~a~0#1, main_~b~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~l~0#1;havoc main_~m~0#1;havoc main_~a~0#1;havoc main_~b~0#1;main_~i~0#1 := 0; 302#L15-2 assume !!(main_~i~0#1 < 100);main_~a~0#1 := 2 + main_~i~0#1;main_~j~0#1 := 0; 299#L18-2 assume !!(main_~j~0#1 < main_~a~0#1);main_~k~0#1 := 3 + (main_~i~0#1 + main_~j~0#1); 300#L20-2 assume !!(main_~k~0#1 >= 0);main_~b~0#1 := 4 + (main_~i~0#1 + main_~j~0#1 + main_~k~0#1);main_~l~0#1 := 0; 301#L23-2 assume !!(main_~l~0#1 < main_~b~0#1);main_~m~0#1 := 1000 + (main_~i~0#1 + main_~j~0#1 + main_~k~0#1 + main_~l~0#1); 296#L25-2 [2021-12-07 00:24:06,338 INFO L793 eck$LassoCheckResult]: Loop: 296#L25-2 assume !!(main_~m~0#1 >= 0);main_~m~0#1 := main_~m~0#1 - 0; 296#L25-2 [2021-12-07 00:24:06,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:24:06,338 INFO L85 PathProgramCache]: Analyzing trace with hash 889698581, now seen corresponding path program 1 times [2021-12-07 00:24:06,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:24:06,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282268821] [2021-12-07 00:24:06,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:24:06,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:24:06,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:24:06,346 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:24:06,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:24:06,352 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:24:06,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:24:06,352 INFO L85 PathProgramCache]: Analyzing trace with hash 78, now seen corresponding path program 1 times [2021-12-07 00:24:06,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:24:06,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12224020] [2021-12-07 00:24:06,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:24:06,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:24:06,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:24:06,355 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:24:06,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:24:06,357 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:24:06,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:24:06,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1810852282, now seen corresponding path program 1 times [2021-12-07 00:24:06,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:24:06,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975663985] [2021-12-07 00:24:06,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:24:06,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:24:06,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:24:06,365 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:24:06,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:24:06,373 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:24:06,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 12:24:06 BoogieIcfgContainer [2021-12-07 00:24:06,434 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-07 00:24:06,434 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-07 00:24:06,434 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-07 00:24:06,435 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-07 00:24:06,435 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:24:04" (3/4) ... [2021-12-07 00:24:06,437 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-07 00:24:06,461 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdbde82-986a-45e5-af88-389d948686ae/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-07 00:24:06,461 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-07 00:24:06,462 INFO L158 Benchmark]: Toolchain (without parser) took 1859.29ms. Allocated memory is still 109.1MB. Free memory was 68.8MB in the beginning and 38.8MB in the end (delta: 29.9MB). Peak memory consumption was 30.1MB. Max. memory is 16.1GB. [2021-12-07 00:24:06,462 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 109.1MB. Free memory was 84.8MB in the beginning and 84.7MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-07 00:24:06,462 INFO L158 Benchmark]: CACSL2BoogieTranslator took 157.09ms. Allocated memory is still 109.1MB. Free memory was 68.6MB in the beginning and 87.0MB in the end (delta: -18.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-07 00:24:06,463 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.72ms. Allocated memory is still 109.1MB. Free memory was 87.0MB in the beginning and 85.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-07 00:24:06,463 INFO L158 Benchmark]: Boogie Preprocessor took 12.26ms. Allocated memory is still 109.1MB. Free memory was 85.7MB in the beginning and 84.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-07 00:24:06,464 INFO L158 Benchmark]: RCFGBuilder took 166.74ms. Allocated memory is still 109.1MB. Free memory was 84.4MB in the beginning and 75.6MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-07 00:24:06,464 INFO L158 Benchmark]: BuchiAutomizer took 1471.17ms. Allocated memory is still 109.1MB. Free memory was 75.6MB in the beginning and 41.0MB in the end (delta: 34.7MB). Peak memory consumption was 36.3MB. Max. memory is 16.1GB. [2021-12-07 00:24:06,464 INFO L158 Benchmark]: Witness Printer took 26.80ms. Allocated memory is still 109.1MB. Free memory was 40.6MB in the beginning and 38.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-07 00:24:06,466 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 109.1MB. Free memory was 84.8MB in the beginning and 84.7MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 157.09ms. Allocated memory is still 109.1MB. Free memory was 68.6MB in the beginning and 87.0MB in the end (delta: -18.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.72ms. Allocated memory is still 109.1MB. Free memory was 87.0MB in the beginning and 85.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 12.26ms. Allocated memory is still 109.1MB. Free memory was 85.7MB in the beginning and 84.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 166.74ms. Allocated memory is still 109.1MB. Free memory was 84.4MB in the beginning and 75.6MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 1471.17ms. Allocated memory is still 109.1MB. Free memory was 75.6MB in the beginning and 41.0MB in the end (delta: 34.7MB). Peak memory consumption was 36.3MB. Max. memory is 16.1GB. * Witness Printer took 26.80ms. Allocated memory is still 109.1MB. Free memory was 40.6MB in the beginning and 38.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (4 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * i and consists of 6 locations. 4 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 7 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.4s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 1.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 26 StatesRemovedByMinimization, 4 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: 0 mSolverCounterUnknown, 104 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 103 mSDsluCounter, 91 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 52 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 94 IncrementalHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 39 mSDtfsCounter, 94 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI3 SFLT0 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax166 hnf100 lsp60 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq188 hnf91 smp100 dnf100 smp100 tf106 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 22ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 25]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {j=0, i=0, k=3, m=1003, l=0, a=2, \result=0, b=7} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 25]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] int j; [L8] int k; [L9] int l; [L10] int m; [L11] int a; [L12] int b; [L13] i = 0 [L15] COND TRUE i < 100 [L16] a = i+2 [L17] j = 0 [L18] COND TRUE j < a [L19] k = i+j+3 [L20] COND TRUE k >= 0 [L21] b = i+j+k+4 [L22] l = 0 [L23] COND TRUE l < b [L24] m = i+j+k+l+1000 Loop: [L25] COND TRUE m >= 0 [L26] m = m-0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-12-07 00:24:06,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdbde82-986a-45e5-af88-389d948686ae/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-12-07 00:24:06,764 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fdbde82-986a-45e5-af88-389d948686ae/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)