./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/UpAndDownIneq.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/UpAndDownIneq.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC --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 2b329fcd1c2ada34efa1c491c6d8d75d6e8a1856 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 00:28:47,603 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:28:47,606 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:28:47,645 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:28:47,646 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:28:47,649 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:28:47,651 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:28:47,654 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:28:47,657 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:28:47,659 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:28:47,660 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:28:47,662 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:28:47,663 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:28:47,664 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:28:47,666 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:28:47,668 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:28:47,669 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:28:47,670 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:28:47,673 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:28:47,676 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:28:47,678 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:28:47,680 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:28:47,682 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:28:47,683 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:28:47,688 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:28:47,688 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:28:47,689 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:28:47,690 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:28:47,691 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:28:47,692 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:28:47,693 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:28:47,694 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:28:47,695 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:28:47,696 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:28:47,698 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:28:47,699 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:28:47,700 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:28:47,700 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:28:47,701 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:28:47,702 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:28:47,704 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:28:47,705 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-11 00:28:47,734 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:28:47,734 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:28:47,736 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:28:47,736 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:28:47,737 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:28:47,737 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-11 00:28:47,737 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-11 00:28:47,738 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-11 00:28:47,738 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-11 00:28:47,738 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-11 00:28:47,738 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-11 00:28:47,739 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:28:47,739 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 00:28:47,739 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:28:47,739 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:28:47,740 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-11 00:28:47,740 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-11 00:28:47,740 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-11 00:28:47,740 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:28:47,741 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-11 00:28:47,741 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:28:47,741 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-11 00:28:47,742 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:28:47,742 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:28:47,744 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:28:47,744 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:28:47,744 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:28:47,746 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-11 00:28:47,747 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_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b329fcd1c2ada34efa1c491c6d8d75d6e8a1856 [2021-10-11 00:28:48,032 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:28:48,058 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:28:48,063 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:28:48,065 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:28:48,066 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:28:48,069 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/termination-restricted-15/UpAndDownIneq.c [2021-10-11 00:28:48,183 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/data/a71c995b9/92cfedd2cf9b42609715b1040aac5bd6/FLAGb0a6fef0d [2021-10-11 00:28:48,804 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:28:48,805 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/sv-benchmarks/c/termination-restricted-15/UpAndDownIneq.c [2021-10-11 00:28:48,817 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/data/a71c995b9/92cfedd2cf9b42609715b1040aac5bd6/FLAGb0a6fef0d [2021-10-11 00:28:49,171 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/data/a71c995b9/92cfedd2cf9b42609715b1040aac5bd6 [2021-10-11 00:28:49,174 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:28:49,176 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:28:49,178 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:28:49,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:28:49,183 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:28:49,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:28:49" (1/1) ... [2021-10-11 00:28:49,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cc52ea1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:49, skipping insertion in model container [2021-10-11 00:28:49,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:28:49" (1/1) ... [2021-10-11 00:28:49,196 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:28:49,211 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:28:49,404 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:28:49,431 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:28:49,446 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:28:49,460 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:28:49,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:49 WrapperNode [2021-10-11 00:28:49,461 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:28:49,463 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:28:49,463 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:28:49,463 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:28:49,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:49" (1/1) ... [2021-10-11 00:28:49,478 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:49" (1/1) ... [2021-10-11 00:28:49,497 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:28:49,498 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:28:49,499 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:28:49,499 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:28:49,509 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:49" (1/1) ... [2021-10-11 00:28:49,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:49" (1/1) ... [2021-10-11 00:28:49,510 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:49" (1/1) ... [2021-10-11 00:28:49,510 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:49" (1/1) ... [2021-10-11 00:28:49,513 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:49" (1/1) ... [2021-10-11 00:28:49,517 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:49" (1/1) ... [2021-10-11 00:28:49,518 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:49" (1/1) ... [2021-10-11 00:28:49,520 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:28:49,521 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:28:49,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:28:49,521 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:28:49,522 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:49" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:49,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:28:49,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:28:49,784 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:28:49,784 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-11 00:28:49,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:28:49 BoogieIcfgContainer [2021-10-11 00:28:49,786 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:28:49,788 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-11 00:28:49,788 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-11 00:28:49,792 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-11 00:28:49,793 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-11 00:28:49,793 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 11.10 12:28:49" (1/3) ... [2021-10-11 00:28:49,795 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@329d11d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 11.10 12:28:49, skipping insertion in model container [2021-10-11 00:28:49,795 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-11 00:28:49,796 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:49" (2/3) ... [2021-10-11 00:28:49,796 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@329d11d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 11.10 12:28:49, skipping insertion in model container [2021-10-11 00:28:49,797 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-11 00:28:49,797 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:28:49" (3/3) ... [2021-10-11 00:28:49,799 INFO L389 chiAutomizerObserver]: Analyzing ICFG UpAndDownIneq.c [2021-10-11 00:28:49,857 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-11 00:28:49,858 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-11 00:28:49,858 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-11 00:28:49,858 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:28:49,858 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:28:49,859 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-11 00:28:49,859 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:28:49,859 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-11 00:28:49,874 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2021-10-11 00:28:49,895 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-11 00:28:49,895 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:28:49,895 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:28:49,902 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-11 00:28:49,903 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-11 00:28:49,903 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-11 00:28:49,903 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2021-10-11 00:28:49,904 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-11 00:28:49,905 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:28:49,905 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:28:49,905 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-11 00:28:49,906 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-11 00:28:49,914 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 5#L18-1true [2021-10-11 00:28:49,914 INFO L796 eck$LassoCheckResult]: Loop: 5#L18-1true assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6#L12true assume main_~i~0 >= 10;main_~up~0 := 0; 3#L12-2true assume main_~i~0 <= 0;main_~up~0 := 1; 9#L15-1true assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 5#L18-1true [2021-10-11 00:28:49,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:49,922 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-10-11 00:28:49,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:49,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141178712] [2021-10-11 00:28:49,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:50,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:28:50,027 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:28:50,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:28:50,033 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:28:50,050 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:28:50,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:50,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1234538, now seen corresponding path program 1 times [2021-10-11 00:28:50,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:50,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60723273] [2021-10-11 00:28:50,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:50,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:50,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:50,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60723273] [2021-10-11 00:28:50,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:28:50,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:28:50,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80885874] [2021-10-11 00:28:50,141 INFO L811 eck$LassoCheckResult]: loop already infeasible [2021-10-11 00:28:50,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:28:50,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:28:50,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:28:50,178 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2021-10-11 00:28:50,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:28:50,283 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2021-10-11 00:28:50,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:28:50,286 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 21 transitions. [2021-10-11 00:28:50,288 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-10-11 00:28:50,294 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 9 states and 13 transitions. [2021-10-11 00:28:50,295 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2021-10-11 00:28:50,296 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2021-10-11 00:28:50,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 13 transitions. [2021-10-11 00:28:50,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-11 00:28:50,297 INFO L692 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2021-10-11 00:28:50,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 13 transitions. [2021-10-11 00:28:50,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-11 00:28:50,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-11 00:28:50,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 13 transitions. [2021-10-11 00:28:50,361 INFO L715 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2021-10-11 00:28:50,361 INFO L595 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2021-10-11 00:28:50,362 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-11 00:28:50,362 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 13 transitions. [2021-10-11 00:28:50,373 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-10-11 00:28:50,374 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:28:50,374 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:28:50,375 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-11 00:28:50,375 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-11 00:28:50,376 INFO L794 eck$LassoCheckResult]: Stem: 37#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 38#L18-1 [2021-10-11 00:28:50,376 INFO L796 eck$LassoCheckResult]: Loop: 38#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 43#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 35#L12-2 assume !(main_~i~0 <= 0); 36#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 38#L18-1 [2021-10-11 00:28:50,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:50,379 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2021-10-11 00:28:50,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:50,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609139374] [2021-10-11 00:28:50,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:50,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:28:50,390 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:28:50,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:28:50,399 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:28:50,401 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:28:50,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:50,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1234602, now seen corresponding path program 1 times [2021-10-11 00:28:50,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:50,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032410863] [2021-10-11 00:28:50,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:50,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:28:50,420 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:28:50,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:28:50,430 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:28:50,435 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:28:50,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:50,437 INFO L82 PathProgramCache]: Analyzing trace with hash 29863753, now seen corresponding path program 1 times [2021-10-11 00:28:50,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:50,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743278478] [2021-10-11 00:28:50,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:50,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:28:50,470 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:28:50,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:28:50,480 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:28:50,482 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:28:50,596 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:28:50,598 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:28:50,599 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:28:50,603 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:28:50,603 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-11 00:28:50,603 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:50,604 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:28:50,604 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:28:50,604 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration2_Loop [2021-10-11 00:28:50,605 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:28:50,606 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:28:50,630 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:28:50,638 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:28:50,643 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:28:50,649 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:28:50,762 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:28:50,764 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:28:50,771 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:28:50,771 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:50,802 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-11 00:28:50,803 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: [] No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:28:50,853 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:28:50,853 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-11 00:28:50,867 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-11 00:28:50,867 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: [] Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:50,928 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:28:50,928 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-11 00:28:50,932 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-11 00:28:50,932 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=0} Honda state: {ULTIMATE.start_main_~up~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:50,960 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:28:50,960 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:50,997 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-11 00:28:50,997 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-11 00:28:51,021 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-11 00:28:51,057 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:28:51,057 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:28:51,057 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:28:51,057 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:28:51,058 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-11 00:28:51,058 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:51,058 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:28:51,058 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:28:51,058 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration2_Loop [2021-10-11 00:28:51,058 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:28:51,058 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:28:51,060 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:28:51,065 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:28:51,071 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:28:51,075 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:28:51,151 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:28:51,156 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:28:51,172 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2021-10-11 00:28:51,175 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:28:51,176 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:28:51,176 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:28:51,176 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:28:51,190 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-11 00:28:51,190 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-11 00:28:51,207 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:28:51,250 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2021-10-11 00:28:51,251 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:28:51,252 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:28:51,252 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:28:51,252 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:28:51,261 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-11 00:28:51,261 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:51,273 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:51,303 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2021-10-11 00:28:51,304 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:28:51,304 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-11 00:28:51,305 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:28:51,305 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:28:51,305 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:28:51,313 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-11 00:28:51,313 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-11 00:28:51,326 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:28:51,372 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2021-10-11 00:28:51,374 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:28:51,374 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-11 00:28:51,374 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:28:51,374 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:28:51,374 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:28:51,379 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-11 00:28:51,379 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:51,390 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-11 00:28:51,404 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-11 00:28:51,405 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:28:51,413 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-11 00:28:51,414 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-11 00:28:51,414 INFO L510 LassoAnalysis]: Proved termination. [2021-10-11 00:28:51,414 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:51,447 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-11 00:28:51,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:51,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:51,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 00:28:51,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:28:51,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:51,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 00:28:51,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:28:51,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:51,587 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-11 00:28:51,603 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 13 transitions. cyclomatic complexity: 5 Second operand 4 states. [2021-10-11 00:28:51,690 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 13 transitions. cyclomatic complexity: 5. Second operand 4 states. Result 24 states and 36 transitions. Complement of second has 7 states. [2021-10-11 00:28:51,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-11 00:28:51,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-11 00:28:51,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2021-10-11 00:28:51,701 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 1 letters. Loop has 4 letters. [2021-10-11 00:28:51,703 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:28:51,703 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 5 letters. Loop has 4 letters. [2021-10-11 00:28:51,703 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:28:51,703 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 1 letters. Loop has 8 letters. [2021-10-11 00:28:51,704 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:28:51,704 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 36 transitions. [2021-10-11 00:28:51,708 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2021-10-11 00:28:51,715 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 24 states and 36 transitions. [2021-10-11 00:28:51,715 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2021-10-11 00:28:51,715 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-10-11 00:28:51,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 36 transitions. [2021-10-11 00:28:51,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-11 00:28:51,716 INFO L692 BuchiCegarLoop]: Abstraction has 24 states and 36 transitions. [2021-10-11 00:28:51,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 36 transitions. [2021-10-11 00:28:51,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2021-10-11 00:28:51,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-10-11 00:28:51,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 34 transitions. [2021-10-11 00:28:51,721 INFO L715 BuchiCegarLoop]: Abstraction has 23 states and 34 transitions. [2021-10-11 00:28:51,721 INFO L595 BuchiCegarLoop]: Abstraction has 23 states and 34 transitions. [2021-10-11 00:28:51,721 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-11 00:28:51,721 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 34 transitions. [2021-10-11 00:28:51,724 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2021-10-11 00:28:51,725 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:28:51,725 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:28:51,725 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-11 00:28:51,725 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-11 00:28:51,725 INFO L794 eck$LassoCheckResult]: Stem: 111#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 112#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 122#L12 [2021-10-11 00:28:51,726 INFO L796 eck$LassoCheckResult]: Loop: 122#L12 assume !(main_~i~0 >= 10); 125#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 128#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 126#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 122#L12 [2021-10-11 00:28:51,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:51,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2021-10-11 00:28:51,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:51,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829403350] [2021-10-11 00:28:51,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:51,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:28:51,745 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:28:51,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:28:51,748 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:28:51,749 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:28:51,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:51,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1389492, now seen corresponding path program 1 times [2021-10-11 00:28:51,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:51,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173583731] [2021-10-11 00:28:51,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:51,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:51,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:51,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173583731] [2021-10-11 00:28:51,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:28:51,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:28:51,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451651252] [2021-10-11 00:28:51,780 INFO L811 eck$LassoCheckResult]: loop already infeasible [2021-10-11 00:28:51,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:28:51,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:28:51,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:28:51,784 INFO L87 Difference]: Start difference. First operand 23 states and 34 transitions. cyclomatic complexity: 14 Second operand 3 states. [2021-10-11 00:28:51,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:28:51,796 INFO L93 Difference]: Finished difference Result 29 states and 41 transitions. [2021-10-11 00:28:51,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:28:51,797 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 41 transitions. [2021-10-11 00:28:51,799 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2021-10-11 00:28:51,802 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 28 states and 40 transitions. [2021-10-11 00:28:51,802 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21 [2021-10-11 00:28:51,802 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2021-10-11 00:28:51,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 40 transitions. [2021-10-11 00:28:51,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-11 00:28:51,803 INFO L692 BuchiCegarLoop]: Abstraction has 28 states and 40 transitions. [2021-10-11 00:28:51,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 40 transitions. [2021-10-11 00:28:51,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2021-10-11 00:28:51,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-10-11 00:28:51,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 39 transitions. [2021-10-11 00:28:51,808 INFO L715 BuchiCegarLoop]: Abstraction has 27 states and 39 transitions. [2021-10-11 00:28:51,808 INFO L595 BuchiCegarLoop]: Abstraction has 27 states and 39 transitions. [2021-10-11 00:28:51,808 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-11 00:28:51,809 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 39 transitions. [2021-10-11 00:28:51,810 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2021-10-11 00:28:51,810 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:28:51,810 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:28:51,811 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-11 00:28:51,811 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-11 00:28:51,811 INFO L794 eck$LassoCheckResult]: Stem: 169#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 170#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 178#L12 [2021-10-11 00:28:51,811 INFO L796 eck$LassoCheckResult]: Loop: 178#L12 assume !(main_~i~0 >= 10); 185#L12-2 assume !(main_~i~0 <= 0); 189#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 187#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 178#L12 [2021-10-11 00:28:51,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:51,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 2 times [2021-10-11 00:28:51,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:51,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057517928] [2021-10-11 00:28:51,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:51,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:28:51,840 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:28:51,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:28:51,844 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:28:51,845 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:28:51,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:51,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1391414, now seen corresponding path program 1 times [2021-10-11 00:28:51,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:51,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559740136] [2021-10-11 00:28:51,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:51,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:28:51,861 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:28:51,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:28:51,876 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:28:51,878 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:28:51,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:51,879 INFO L82 PathProgramCache]: Analyzing trace with hash 925835935, now seen corresponding path program 1 times [2021-10-11 00:28:51,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:51,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274274950] [2021-10-11 00:28:51,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:51,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:28:51,898 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:28:51,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:28:51,910 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:28:51,912 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:28:51,948 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:28:51,949 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:28:51,949 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:28:51,949 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:28:51,949 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-11 00:28:51,949 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:51,950 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:28:51,950 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:28:51,950 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration4_Loop [2021-10-11 00:28:51,950 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:28:51,952 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:28:51,959 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:28:51,963 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:28:51,966 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:28:51,970 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:28:52,045 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:28:52,045 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:28:52,056 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:28:52,056 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:52,080 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-11 00:28:52,080 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:28:52,131 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:28:52,131 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:52,143 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-11 00:28:52,143 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:28:52,174 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:28:52,174 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:52,195 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-11 00:28:52,195 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=0} Honda state: {ULTIMATE.start_main_~up~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:28:52,243 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:28:52,243 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:52,298 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-11 00:28:52,298 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-11 00:28:52,343 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-11 00:28:52,345 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:28:52,345 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:28:52,345 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:28:52,345 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:28:52,345 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-11 00:28:52,345 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:52,346 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:28:52,346 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:28:52,346 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration4_Loop [2021-10-11 00:28:52,346 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:28:52,346 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:28:52,351 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:28:52,358 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:28:52,362 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:28:52,369 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:28:52,447 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:28:52,447 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:52,468 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2021-10-11 00:28:52,469 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:28:52,470 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:28:52,470 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:28:52,470 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:28:52,476 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-11 00:28:52,476 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-11 00:28:52,481 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:52,504 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2021-10-11 00:28:52,506 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:28:52,506 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-11 00:28:52,506 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:28:52,506 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:28:52,506 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:28:52,507 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-11 00:28:52,507 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-11 00:28:52,521 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:52,552 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2021-10-11 00:28:52,554 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:28:52,554 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:28:52,554 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:28:52,555 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:28:52,564 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-11 00:28:52,565 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-11 00:28:52,576 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:52,611 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2021-10-11 00:28:52,613 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:28:52,613 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-11 00:28:52,613 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:28:52,613 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:28:52,613 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:28:52,615 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-11 00:28:52,616 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-11 00:28:52,622 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-11 00:28:52,626 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-11 00:28:52,626 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:52,632 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-11 00:28:52,632 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-11 00:28:52,632 INFO L510 LassoAnalysis]: Proved termination. [2021-10-11 00:28:52,632 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-11 00:28:52,654 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-11 00:28:52,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:52,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:52,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 00:28:52,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:28:52,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:52,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 00:28:52,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:28:52,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:52,823 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-10-11 00:28:52,823 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 39 transitions. cyclomatic complexity: 15 Second operand 5 states. [2021-10-11 00:28:52,891 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 39 transitions. cyclomatic complexity: 15. Second operand 5 states. Result 45 states and 68 transitions. Complement of second has 7 states. [2021-10-11 00:28:52,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-11 00:28:52,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-11 00:28:52,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2021-10-11 00:28:52,893 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 2 letters. Loop has 4 letters. [2021-10-11 00:28:52,893 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:28:52,893 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 6 letters. Loop has 4 letters. [2021-10-11 00:28:52,894 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:28:52,894 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 2 letters. Loop has 8 letters. [2021-10-11 00:28:52,897 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:28:52,897 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 68 transitions. [2021-10-11 00:28:52,909 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-10-11 00:28:52,913 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 37 states and 55 transitions. [2021-10-11 00:28:52,916 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2021-10-11 00:28:52,916 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2021-10-11 00:28:52,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 55 transitions. [2021-10-11 00:28:52,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-11 00:28:52,918 INFO L692 BuchiCegarLoop]: Abstraction has 37 states and 55 transitions. [2021-10-11 00:28:52,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 55 transitions. [2021-10-11 00:28:52,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2021-10-11 00:28:52,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-10-11 00:28:52,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2021-10-11 00:28:52,928 INFO L715 BuchiCegarLoop]: Abstraction has 30 states and 44 transitions. [2021-10-11 00:28:52,928 INFO L595 BuchiCegarLoop]: Abstraction has 30 states and 44 transitions. [2021-10-11 00:28:52,929 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-11 00:28:52,929 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 30 states and 44 transitions. [2021-10-11 00:28:52,930 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-10-11 00:28:52,932 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:28:52,932 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:28:52,933 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-11 00:28:52,933 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-11 00:28:52,934 INFO L794 eck$LassoCheckResult]: Stem: 284#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 285#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 295#L12 assume !(main_~i~0 >= 10); 291#L12-2 [2021-10-11 00:28:52,934 INFO L796 eck$LassoCheckResult]: Loop: 291#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 294#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 286#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 287#L12 assume !(main_~i~0 >= 10); 291#L12-2 [2021-10-11 00:28:52,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:52,935 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2021-10-11 00:28:52,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:52,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4266917] [2021-10-11 00:28:52,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:52,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:28:52,955 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:28:52,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:28:52,960 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:28:52,962 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:28:52,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:52,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1513900, now seen corresponding path program 1 times [2021-10-11 00:28:52,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:52,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14981718] [2021-10-11 00:28:52,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:52,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:28:52,974 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:28:52,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:28:52,979 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:28:52,980 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:28:52,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:52,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1363918576, now seen corresponding path program 1 times [2021-10-11 00:28:52,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:52,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190805302] [2021-10-11 00:28:52,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:52,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:28:52,990 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:28:52,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:28:52,999 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:28:53,011 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:28:53,053 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:28:53,053 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:28:53,053 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:28:53,053 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:28:53,054 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-11 00:28:53,054 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:53,054 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:28:53,054 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:28:53,054 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration5_Loop [2021-10-11 00:28:53,054 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:28:53,055 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:28:53,057 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:28:53,064 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:28:53,077 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:28:53,082 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:28:53,169 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:28:53,169 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:28:53,175 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:28:53,175 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:53,191 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-11 00:28:53,191 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:28:53,239 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:28:53,239 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:28:53,295 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-11 00:28:53,296 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:53,355 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-11 00:28:53,357 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:28:53,357 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:28:53,357 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:28:53,357 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:28:53,357 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-11 00:28:53,358 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:53,358 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:28:53,358 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:28:53,358 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration5_Loop [2021-10-11 00:28:53,358 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:28:53,358 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:28:53,359 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:28:53,374 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:28:53,378 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:28:53,384 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:28:53,461 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:28:53,462 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:53,473 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2021-10-11 00:28:53,475 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:28:53,475 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-11 00:28:53,475 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:28:53,475 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:28:53,475 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:28:53,476 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-11 00:28:53,476 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-11 00:28:53,496 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-11 00:28:53,501 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-11 00:28:53,501 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:28:53,514 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-11 00:28:53,514 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-11 00:28:53,514 INFO L510 LassoAnalysis]: Proved termination. [2021-10-11 00:28:53,514 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 1 Supporting invariants [] Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:53,552 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-11 00:28:53,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:53,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:53,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 00:28:53,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:28:53,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:53,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 00:28:53,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:28:53,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:53,689 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-10-11 00:28:53,689 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 30 states and 44 transitions. cyclomatic complexity: 17 Second operand 4 states. [2021-10-11 00:28:53,725 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 30 states and 44 transitions. cyclomatic complexity: 17. Second operand 4 states. Result 76 states and 108 transitions. Complement of second has 7 states. [2021-10-11 00:28:53,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-11 00:28:53,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-11 00:28:53,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2021-10-11 00:28:53,727 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 3 letters. Loop has 4 letters. [2021-10-11 00:28:53,727 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:28:53,727 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 7 letters. Loop has 4 letters. [2021-10-11 00:28:53,727 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:28:53,728 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 3 letters. Loop has 8 letters. [2021-10-11 00:28:53,728 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:28:53,728 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 76 states and 108 transitions. [2021-10-11 00:28:53,734 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 26 [2021-10-11 00:28:53,738 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 76 states to 68 states and 98 transitions. [2021-10-11 00:28:53,739 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2021-10-11 00:28:53,739 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2021-10-11 00:28:53,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 68 states and 98 transitions. [2021-10-11 00:28:53,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-11 00:28:53,739 INFO L692 BuchiCegarLoop]: Abstraction has 68 states and 98 transitions. [2021-10-11 00:28:53,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states and 98 transitions. [2021-10-11 00:28:53,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 56. [2021-10-11 00:28:53,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-10-11 00:28:53,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 84 transitions. [2021-10-11 00:28:53,746 INFO L715 BuchiCegarLoop]: Abstraction has 56 states and 84 transitions. [2021-10-11 00:28:53,746 INFO L595 BuchiCegarLoop]: Abstraction has 56 states and 84 transitions. [2021-10-11 00:28:53,746 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-11 00:28:53,746 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 56 states and 84 transitions. [2021-10-11 00:28:53,747 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 22 [2021-10-11 00:28:53,747 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:28:53,748 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:28:53,748 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-11 00:28:53,748 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-11 00:28:53,748 INFO L794 eck$LassoCheckResult]: Stem: 436#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 437#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 449#L12 assume !(main_~i~0 >= 10); 452#L12-2 assume !(main_~i~0 <= 0); 433#L15-1 [2021-10-11 00:28:53,749 INFO L796 eck$LassoCheckResult]: Loop: 433#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 438#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 439#L12 assume !(main_~i~0 >= 10); 432#L12-2 assume !(main_~i~0 <= 0); 433#L15-1 [2021-10-11 00:28:53,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:53,749 INFO L82 PathProgramCache]: Analyzing trace with hash 963408, now seen corresponding path program 1 times [2021-10-11 00:28:53,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:53,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279479062] [2021-10-11 00:28:53,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:53,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:28:53,755 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:28:53,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:28:53,758 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:28:53,759 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:28:53,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:53,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1678392, now seen corresponding path program 1 times [2021-10-11 00:28:53,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:53,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896850392] [2021-10-11 00:28:53,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:53,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:28:53,766 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:28:53,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:28:53,782 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:28:53,783 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:28:53,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:53,784 INFO L82 PathProgramCache]: Analyzing trace with hash 670044167, now seen corresponding path program 1 times [2021-10-11 00:28:53,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:53,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138730989] [2021-10-11 00:28:53,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:53,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:53,803 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:53,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138730989] [2021-10-11 00:28:53,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:28:53,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:28:53,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381781442] [2021-10-11 00:28:53,886 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:28:53,887 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:28:53,887 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:28:53,887 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:28:53,902 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-11 00:28:53,902 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:53,902 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:28:53,903 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:28:53,903 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration6_Loop [2021-10-11 00:28:53,903 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:28:53,903 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:28:53,904 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:28:53,916 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:28:53,920 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:28:53,924 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:28:54,012 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:28:54,013 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:54,017 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:28:54,017 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:54,047 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-11 00:28:54,047 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-11 00:28:54,172 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-11 00:28:54,173 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:28:54,174 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:28:54,174 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:28:54,174 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:28:54,174 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-11 00:28:54,174 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:54,174 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:28:54,174 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:28:54,174 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration6_Loop [2021-10-11 00:28:54,174 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:28:54,174 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:28:54,175 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:28:54,196 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:28:54,201 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:28:54,205 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:28:54,276 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:28:54,277 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:54,291 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2021-10-11 00:28:54,293 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:28:54,293 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-11 00:28:54,293 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:28:54,293 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:28:54,293 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:28:54,296 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-11 00:28:54,296 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-11 00:28:54,310 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-11 00:28:54,317 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-11 00:28:54,317 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:54,319 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-11 00:28:54,319 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-11 00:28:54,320 INFO L510 LassoAnalysis]: Proved termination. [2021-10-11 00:28:54,320 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 17 Supporting invariants [] [2021-10-11 00:28:54,342 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-11 00:28:54,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:54,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:54,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 00:28:54,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:28:54,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:54,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 00:28:54,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:28:54,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:54,454 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-10-11 00:28:54,454 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 56 states and 84 transitions. cyclomatic complexity: 35 Second operand 4 states. [2021-10-11 00:28:54,549 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 56 states and 84 transitions. cyclomatic complexity: 35. Second operand 4 states. Result 155 states and 227 transitions. Complement of second has 7 states. [2021-10-11 00:28:54,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-11 00:28:54,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-11 00:28:54,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2021-10-11 00:28:54,551 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 4 letters. Loop has 4 letters. [2021-10-11 00:28:54,552 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:28:54,552 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 8 letters. Loop has 4 letters. [2021-10-11 00:28:54,552 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:28:54,552 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 4 letters. Loop has 8 letters. [2021-10-11 00:28:54,553 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:28:54,553 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 155 states and 227 transitions. [2021-10-11 00:28:54,557 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 43 [2021-10-11 00:28:54,560 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 155 states to 151 states and 219 transitions. [2021-10-11 00:28:54,562 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 69 [2021-10-11 00:28:54,563 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 78 [2021-10-11 00:28:54,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 151 states and 219 transitions. [2021-10-11 00:28:54,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-11 00:28:54,567 INFO L692 BuchiCegarLoop]: Abstraction has 151 states and 219 transitions. [2021-10-11 00:28:54,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states and 219 transitions. [2021-10-11 00:28:54,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 125. [2021-10-11 00:28:54,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2021-10-11 00:28:54,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 189 transitions. [2021-10-11 00:28:54,593 INFO L715 BuchiCegarLoop]: Abstraction has 125 states and 189 transitions. [2021-10-11 00:28:54,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:28:54,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:28:54,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:28:54,594 INFO L87 Difference]: Start difference. First operand 125 states and 189 transitions. Second operand 3 states. [2021-10-11 00:28:54,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:28:54,611 INFO L93 Difference]: Finished difference Result 97 states and 129 transitions. [2021-10-11 00:28:54,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:28:54,612 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 97 states and 129 transitions. [2021-10-11 00:28:54,614 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 22 [2021-10-11 00:28:54,619 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 97 states to 83 states and 115 transitions. [2021-10-11 00:28:54,620 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2021-10-11 00:28:54,623 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 39 [2021-10-11 00:28:54,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 83 states and 115 transitions. [2021-10-11 00:28:54,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-11 00:28:54,625 INFO L692 BuchiCegarLoop]: Abstraction has 83 states and 115 transitions. [2021-10-11 00:28:54,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states and 115 transitions. [2021-10-11 00:28:54,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 78. [2021-10-11 00:28:54,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2021-10-11 00:28:54,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 110 transitions. [2021-10-11 00:28:54,641 INFO L715 BuchiCegarLoop]: Abstraction has 78 states and 110 transitions. [2021-10-11 00:28:54,641 INFO L595 BuchiCegarLoop]: Abstraction has 78 states and 110 transitions. [2021-10-11 00:28:54,641 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2021-10-11 00:28:54,642 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 78 states and 110 transitions. [2021-10-11 00:28:54,642 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 21 [2021-10-11 00:28:54,642 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:28:54,643 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:28:54,643 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2021-10-11 00:28:54,643 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-11 00:28:54,643 INFO L794 eck$LassoCheckResult]: Stem: 919#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 920#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 972#L12 assume !(main_~i~0 >= 10); 970#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 965#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 962#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 957#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 915#L12-2 [2021-10-11 00:28:54,643 INFO L796 eck$LassoCheckResult]: Loop: 915#L12-2 assume !(main_~i~0 <= 0); 916#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 921#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 922#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 915#L12-2 [2021-10-11 00:28:54,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:54,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1363918578, now seen corresponding path program 1 times [2021-10-11 00:28:54,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:54,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904694083] [2021-10-11 00:28:54,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:54,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:54,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:54,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904694083] [2021-10-11 00:28:54,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:28:54,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:28:54,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990760067] [2021-10-11 00:28:54,686 INFO L799 eck$LassoCheckResult]: stem already infeasible [2021-10-11 00:28:54,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:54,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1575402, now seen corresponding path program 2 times [2021-10-11 00:28:54,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:54,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450287009] [2021-10-11 00:28:54,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:54,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:28:54,701 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:28:54,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:28:54,705 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:28:54,714 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:28:54,758 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:28:54,758 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:28:54,759 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:28:54,759 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:28:54,759 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-11 00:28:54,759 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:54,759 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:28:54,759 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:28:54,759 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration7_Loop [2021-10-11 00:28:54,760 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:28:54,760 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:28:54,761 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:28:54,768 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:28:54,772 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:28:54,777 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:28:54,851 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:28:54,851 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:28:54,860 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:28:54,860 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:54,874 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-11 00:28:54,874 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=0} Honda state: {ULTIMATE.start_main_~up~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:54,901 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:28:54,901 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-11 00:28:54,904 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-11 00:28:54,904 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_9=0} Honda state: {v_rep~unnamed0~0~false_9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:54,940 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:28:54,941 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-11 00:28:54,944 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-11 00:28:54,944 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_9=1} Honda state: {v_rep~unnamed0~0~true_9=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:54,969 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:28:54,969 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:54,998 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-11 00:28:54,998 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-11 00:28:55,105 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-11 00:28:55,106 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:28:55,106 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:28:55,106 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:28:55,106 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:28:55,107 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-11 00:28:55,107 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:55,107 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:28:55,107 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:28:55,107 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration7_Loop [2021-10-11 00:28:55,107 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:28:55,107 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:28:55,108 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:28:55,111 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:28:55,123 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:28:55,127 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:28:55,223 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:28:55,223 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:28:55,237 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:55,239 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:28:55,239 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:28:55,239 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:28:55,239 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:28:55,242 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-11 00:28:55,242 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-11 00:28:55,258 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:28:55,303 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2021-10-11 00:28:55,305 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:28:55,305 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-11 00:28:55,305 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:28:55,305 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:28:55,306 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:28:55,307 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-11 00:28:55,307 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:55,311 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:55,335 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2021-10-11 00:28:55,336 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:28:55,337 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:28:55,337 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:28:55,337 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:28:55,340 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-11 00:28:55,341 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-11 00:28:55,362 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:28:55,407 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2021-10-11 00:28:55,410 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:28:55,410 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-11 00:28:55,410 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:28:55,410 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:28:55,410 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:28:55,412 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-11 00:28:55,412 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:55,426 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-11 00:28:55,431 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-11 00:28:55,431 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:28:55,438 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-11 00:28:55,438 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-11 00:28:55,439 INFO L510 LassoAnalysis]: Proved termination. [2021-10-11 00:28:55,439 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:55,475 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-11 00:28:55,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:55,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:55,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 00:28:55,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:28:55,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:55,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 00:28:55,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:28:55,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:55,554 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-11 00:28:55,554 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 78 states and 110 transitions. cyclomatic complexity: 43 Second operand 4 states. [2021-10-11 00:28:55,600 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 78 states and 110 transitions. cyclomatic complexity: 43. Second operand 4 states. Result 148 states and 199 transitions. Complement of second has 7 states. [2021-10-11 00:28:55,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-11 00:28:55,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-11 00:28:55,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2021-10-11 00:28:55,603 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 4 letters. [2021-10-11 00:28:55,603 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:28:55,603 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 11 letters. Loop has 4 letters. [2021-10-11 00:28:55,604 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:28:55,604 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 8 letters. [2021-10-11 00:28:55,604 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:28:55,605 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 148 states and 199 transitions. [2021-10-11 00:28:55,612 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 25 [2021-10-11 00:28:55,616 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 148 states to 121 states and 162 transitions. [2021-10-11 00:28:55,624 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 45 [2021-10-11 00:28:55,624 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 49 [2021-10-11 00:28:55,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 121 states and 162 transitions. [2021-10-11 00:28:55,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-11 00:28:55,625 INFO L692 BuchiCegarLoop]: Abstraction has 121 states and 162 transitions. [2021-10-11 00:28:55,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states and 162 transitions. [2021-10-11 00:28:55,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 101. [2021-10-11 00:28:55,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2021-10-11 00:28:55,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 140 transitions. [2021-10-11 00:28:55,638 INFO L715 BuchiCegarLoop]: Abstraction has 101 states and 140 transitions. [2021-10-11 00:28:55,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:28:55,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:28:55,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:28:55,639 INFO L87 Difference]: Start difference. First operand 101 states and 140 transitions. Second operand 4 states. [2021-10-11 00:28:55,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:28:55,686 INFO L93 Difference]: Finished difference Result 135 states and 179 transitions. [2021-10-11 00:28:55,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:28:55,687 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 135 states and 179 transitions. [2021-10-11 00:28:55,690 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 27 [2021-10-11 00:28:55,696 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 135 states to 128 states and 168 transitions. [2021-10-11 00:28:55,697 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 59 [2021-10-11 00:28:55,698 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 59 [2021-10-11 00:28:55,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 128 states and 168 transitions. [2021-10-11 00:28:55,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-11 00:28:55,698 INFO L692 BuchiCegarLoop]: Abstraction has 128 states and 168 transitions. [2021-10-11 00:28:55,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states and 168 transitions. [2021-10-11 00:28:55,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 109. [2021-10-11 00:28:55,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2021-10-11 00:28:55,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 142 transitions. [2021-10-11 00:28:55,725 INFO L715 BuchiCegarLoop]: Abstraction has 109 states and 142 transitions. [2021-10-11 00:28:55,725 INFO L595 BuchiCegarLoop]: Abstraction has 109 states and 142 transitions. [2021-10-11 00:28:55,725 INFO L427 BuchiCegarLoop]: ======== Iteration 8============ [2021-10-11 00:28:55,726 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 109 states and 142 transitions. [2021-10-11 00:28:55,727 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 23 [2021-10-11 00:28:55,729 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:28:55,729 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:28:55,730 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2021-10-11 00:28:55,730 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-11 00:28:55,730 INFO L794 eck$LassoCheckResult]: Stem: 1438#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 1439#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 1490#L12 assume !(main_~i~0 >= 10); 1491#L12-2 assume !(main_~i~0 <= 0); 1535#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 1533#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 1531#L12 assume !(main_~i~0 >= 10); 1434#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 1435#L15-1 [2021-10-11 00:28:55,730 INFO L796 eck$LassoCheckResult]: Loop: 1435#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 1440#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 1441#L12 assume !(main_~i~0 >= 10); 1518#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 1435#L15-1 [2021-10-11 00:28:55,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:55,731 INFO L82 PathProgramCache]: Analyzing trace with hash 670103747, now seen corresponding path program 1 times [2021-10-11 00:28:55,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:55,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396492953] [2021-10-11 00:28:55,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:55,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:28:55,743 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:28:55,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:28:55,752 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:28:55,754 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:28:55,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:55,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1678390, now seen corresponding path program 2 times [2021-10-11 00:28:55,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:55,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292335792] [2021-10-11 00:28:55,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:55,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:28:55,765 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:28:55,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:28:55,771 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:28:55,772 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:28:55,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:55,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1635542008, now seen corresponding path program 1 times [2021-10-11 00:28:55,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:55,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032284279] [2021-10-11 00:28:55,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:55,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:55,811 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 00:28:55,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032284279] [2021-10-11 00:28:55,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:28:55,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:28:55,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738871011] [2021-10-11 00:28:55,849 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:28:55,849 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:28:55,849 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:28:55,849 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:28:55,849 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-11 00:28:55,849 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:55,849 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:28:55,849 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:28:55,849 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration8_Loop [2021-10-11 00:28:55,849 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:28:55,849 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:28:55,851 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:28:55,861 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:28:55,865 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:28:55,869 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:28:55,948 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:28:55,948 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:55,951 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:28:55,951 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-11 00:28:55,955 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-11 00:28:55,955 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=1} Honda state: {ULTIMATE.start_main_~up~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:28:55,981 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:28:55,981 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:55,986 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-11 00:28:55,986 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:56,012 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:28:56,012 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-11 00:28:56,015 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-11 00:28:56,015 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:56,040 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:28:56,040 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:56,071 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-11 00:28:56,071 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-11 00:28:56,151 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-11 00:28:56,153 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:28:56,153 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:28:56,153 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:28:56,153 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:28:56,153 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-11 00:28:56,153 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:56,153 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:28:56,153 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:28:56,153 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration8_Loop [2021-10-11 00:28:56,153 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:28:56,153 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:28:56,155 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:28:56,163 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:28:56,168 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:28:56,172 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:28:56,238 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:28:56,238 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:56,254 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2021-10-11 00:28:56,256 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:28:56,256 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-11 00:28:56,256 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:28:56,256 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:28:56,256 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:28:56,258 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-11 00:28:56,258 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-11 00:28:56,262 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:56,285 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2021-10-11 00:28:56,286 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:28:56,287 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:28:56,287 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:28:56,287 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:28:56,289 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-11 00:28:56,289 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-11 00:28:56,303 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:56,327 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2021-10-11 00:28:56,329 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:28:56,329 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:28:56,329 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:28:56,329 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:28:56,332 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-11 00:28:56,332 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-11 00:28:56,358 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:28:56,399 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2021-10-11 00:28:56,401 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:28:56,401 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-11 00:28:56,401 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:28:56,402 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:28:56,402 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:28:56,403 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-11 00:28:56,403 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:56,418 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-11 00:28:56,423 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-11 00:28:56,423 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:28:56,444 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-11 00:28:56,444 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-11 00:28:56,444 INFO L510 LassoAnalysis]: Proved termination. [2021-10-11 00:28:56,444 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:56,480 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-11 00:28:56,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:56,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:56,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 00:28:56,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:28:56,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:56,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 00:28:56,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:28:56,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:56,566 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-11 00:28:56,566 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 109 states and 142 transitions. cyclomatic complexity: 46 Second operand 3 states. [2021-10-11 00:28:56,628 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 109 states and 142 transitions. cyclomatic complexity: 46. Second operand 3 states. Result 215 states and 277 transitions. Complement of second has 7 states. [2021-10-11 00:28:56,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-11 00:28:56,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-11 00:28:56,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2021-10-11 00:28:56,629 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 8 letters. Loop has 4 letters. [2021-10-11 00:28:56,630 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:28:56,630 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 12 letters. Loop has 4 letters. [2021-10-11 00:28:56,633 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:28:56,633 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 8 letters. Loop has 8 letters. [2021-10-11 00:28:56,633 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:28:56,633 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 215 states and 277 transitions. [2021-10-11 00:28:56,643 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 32 [2021-10-11 00:28:56,645 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 215 states to 187 states and 239 transitions. [2021-10-11 00:28:56,645 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 69 [2021-10-11 00:28:56,646 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 74 [2021-10-11 00:28:56,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 187 states and 239 transitions. [2021-10-11 00:28:56,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-11 00:28:56,646 INFO L692 BuchiCegarLoop]: Abstraction has 187 states and 239 transitions. [2021-10-11 00:28:56,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states and 239 transitions. [2021-10-11 00:28:56,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 167. [2021-10-11 00:28:56,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2021-10-11 00:28:56,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 218 transitions. [2021-10-11 00:28:56,665 INFO L715 BuchiCegarLoop]: Abstraction has 167 states and 218 transitions. [2021-10-11 00:28:56,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:28:56,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:28:56,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:28:56,666 INFO L87 Difference]: Start difference. First operand 167 states and 218 transitions. Second operand 4 states. [2021-10-11 00:28:56,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:28:56,694 INFO L93 Difference]: Finished difference Result 162 states and 201 transitions. [2021-10-11 00:28:56,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:28:56,694 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 162 states and 201 transitions. [2021-10-11 00:28:56,696 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 28 [2021-10-11 00:28:56,697 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 162 states to 110 states and 138 transitions. [2021-10-11 00:28:56,697 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 61 [2021-10-11 00:28:56,698 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 64 [2021-10-11 00:28:56,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 110 states and 138 transitions. [2021-10-11 00:28:56,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-11 00:28:56,698 INFO L692 BuchiCegarLoop]: Abstraction has 110 states and 138 transitions. [2021-10-11 00:28:56,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states and 138 transitions. [2021-10-11 00:28:56,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 83. [2021-10-11 00:28:56,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2021-10-11 00:28:56,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 103 transitions. [2021-10-11 00:28:56,701 INFO L715 BuchiCegarLoop]: Abstraction has 83 states and 103 transitions. [2021-10-11 00:28:56,701 INFO L595 BuchiCegarLoop]: Abstraction has 83 states and 103 transitions. [2021-10-11 00:28:56,701 INFO L427 BuchiCegarLoop]: ======== Iteration 9============ [2021-10-11 00:28:56,701 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 83 states and 103 transitions. [2021-10-11 00:28:56,702 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2021-10-11 00:28:56,702 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:28:56,702 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:28:56,703 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1] [2021-10-11 00:28:56,703 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [3, 2, 2, 2, 1, 1, 1] [2021-10-11 00:28:56,703 INFO L794 eck$LassoCheckResult]: Stem: 2153#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 2154#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2171#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 2174#L12-2 assume !(main_~i~0 <= 0); 2173#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 2170#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2159#L12 assume !(main_~i~0 >= 10); 2160#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 2218#L15-1 [2021-10-11 00:28:56,703 INFO L796 eck$LassoCheckResult]: Loop: 2218#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 2155#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2156#L12 assume !(main_~i~0 >= 10); 2219#L12-2 assume !(main_~i~0 <= 0); 2220#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 2229#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2228#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 2149#L12-2 assume !(main_~i~0 <= 0); 2150#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 2223#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2222#L12 assume !(main_~i~0 >= 10); 2221#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 2218#L15-1 [2021-10-11 00:28:56,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:56,703 INFO L82 PathProgramCache]: Analyzing trace with hash 612845445, now seen corresponding path program 1 times [2021-10-11 00:28:56,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:56,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721694779] [2021-10-11 00:28:56,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:56,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:56,740 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:56,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721694779] [2021-10-11 00:28:56,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169063469] [2021-10-11 00:28:56,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:28:56,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:56,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 00:28:56,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:28:56,774 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:56,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:28:56,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-10-11 00:28:56,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322210424] [2021-10-11 00:28:56,776 INFO L799 eck$LassoCheckResult]: stem already infeasible [2021-10-11 00:28:56,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:56,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1192554916, now seen corresponding path program 1 times [2021-10-11 00:28:56,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:56,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721148506] [2021-10-11 00:28:56,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:56,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:56,817 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-11 00:28:56,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721148506] [2021-10-11 00:28:56,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054630273] [2021-10-11 00:28:56,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:28:56,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:56,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 00:28:56,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:28:56,857 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-11 00:28:56,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:28:56,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-10-11 00:28:56,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064662831] [2021-10-11 00:28:56,858 INFO L811 eck$LassoCheckResult]: loop already infeasible [2021-10-11 00:28:56,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:28:56,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:28:56,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:28:56,858 INFO L87 Difference]: Start difference. First operand 83 states and 103 transitions. cyclomatic complexity: 28 Second operand 4 states. [2021-10-11 00:28:56,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:28:56,884 INFO L93 Difference]: Finished difference Result 87 states and 106 transitions. [2021-10-11 00:28:56,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:28:56,884 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 87 states and 106 transitions. [2021-10-11 00:28:56,886 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 21 [2021-10-11 00:28:56,887 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 87 states to 80 states and 98 transitions. [2021-10-11 00:28:56,887 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 43 [2021-10-11 00:28:56,887 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2021-10-11 00:28:56,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 98 transitions. [2021-10-11 00:28:56,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-11 00:28:56,888 INFO L692 BuchiCegarLoop]: Abstraction has 80 states and 98 transitions. [2021-10-11 00:28:56,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states and 98 transitions. [2021-10-11 00:28:56,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 68. [2021-10-11 00:28:56,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2021-10-11 00:28:56,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 84 transitions. [2021-10-11 00:28:56,890 INFO L715 BuchiCegarLoop]: Abstraction has 68 states and 84 transitions. [2021-10-11 00:28:56,890 INFO L595 BuchiCegarLoop]: Abstraction has 68 states and 84 transitions. [2021-10-11 00:28:56,890 INFO L427 BuchiCegarLoop]: ======== Iteration 10============ [2021-10-11 00:28:56,890 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 68 states and 84 transitions. [2021-10-11 00:28:56,893 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-10-11 00:28:56,893 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:28:56,893 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:28:56,894 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 1, 1, 1, 1, 1] [2021-10-11 00:28:56,894 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-11 00:28:56,894 INFO L794 eck$LassoCheckResult]: Stem: 2386#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 2387#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2408#L12 assume !(main_~i~0 >= 10); 2409#L12-2 assume !(main_~i~0 <= 0); 2448#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 2446#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2445#L12 assume !(main_~i~0 >= 10); 2444#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 2443#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 2441#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2414#L12 assume !(main_~i~0 >= 10); 2415#L12-2 [2021-10-11 00:28:56,895 INFO L796 eck$LassoCheckResult]: Loop: 2415#L12-2 assume !(main_~i~0 <= 0); 2429#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 2428#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2426#L12 assume !(main_~i~0 >= 10); 2415#L12-2 [2021-10-11 00:28:56,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:56,895 INFO L82 PathProgramCache]: Analyzing trace with hash 52759419, now seen corresponding path program 2 times [2021-10-11 00:28:56,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:56,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736459935] [2021-10-11 00:28:56,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:56,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:28:56,914 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:28:56,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:28:56,921 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:28:56,925 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:28:56,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:56,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1573482, now seen corresponding path program 2 times [2021-10-11 00:28:56,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:56,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705443356] [2021-10-11 00:28:56,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:56,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:28:56,931 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:28:56,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:28:56,934 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:28:56,935 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:28:56,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:56,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1971928860, now seen corresponding path program 3 times [2021-10-11 00:28:56,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:56,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575451279] [2021-10-11 00:28:56,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:56,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:28:56,941 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:28:56,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:28:56,945 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:28:56,946 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:28:56,974 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:28:56,974 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:28:56,974 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:28:56,974 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:28:56,974 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-11 00:28:56,974 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:56,974 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:28:56,974 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:28:56,974 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration10_Loop [2021-10-11 00:28:56,974 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:28:56,975 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:28:56,975 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:28:56,979 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:28:56,982 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:28:56,990 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:28:57,035 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:28:57,035 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:57,038 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:28:57,038 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-11 00:28:57,042 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-11 00:28:57,042 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=1} Honda state: {ULTIMATE.start_main_~up~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:57,063 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:28:57,063 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-11 00:28:57,065 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-11 00:28:57,065 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_13=1} Honda state: {v_rep~unnamed0~0~true_13=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:57,085 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:28:57,085 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:57,111 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-11 00:28:57,111 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-11 00:28:57,138 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-11 00:28:57,140 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:28:57,140 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:28:57,140 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:28:57,140 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:28:57,140 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-11 00:28:57,140 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:57,140 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:28:57,141 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:28:57,141 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration10_Loop [2021-10-11 00:28:57,141 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:28:57,141 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:28:57,141 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:28:57,145 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:28:57,152 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:28:57,156 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:28:57,201 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:28:57,202 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:57,204 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2021-10-11 00:28:57,205 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:28:57,205 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-11 00:28:57,205 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:28:57,205 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:28:57,205 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:28:57,206 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-11 00:28:57,206 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-11 00:28:57,207 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:57,227 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2021-10-11 00:28:57,229 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:28:57,229 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-11 00:28:57,229 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:28:57,229 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:28:57,229 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:28:57,230 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-11 00:28:57,230 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-11 00:28:57,234 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-11 00:28:57,236 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-11 00:28:57,236 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:28:57,238 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-11 00:28:57,238 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-11 00:28:57,238 INFO L510 LassoAnalysis]: Proved termination. [2021-10-11 00:28:57,239 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 17 Supporting invariants [] [2021-10-11 00:28:57,256 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-11 00:28:57,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:57,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:57,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 00:28:57,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:28:57,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:57,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 00:28:57,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:28:57,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:57,369 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-11 00:28:57,369 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 68 states and 84 transitions. cyclomatic complexity: 23 Second operand 4 states. [2021-10-11 00:28:57,422 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 68 states and 84 transitions. cyclomatic complexity: 23. Second operand 4 states. Result 108 states and 129 transitions. Complement of second has 7 states. [2021-10-11 00:28:57,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-11 00:28:57,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-11 00:28:57,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2021-10-11 00:28:57,423 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 11 letters. Loop has 4 letters. [2021-10-11 00:28:57,423 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:28:57,423 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-11 00:28:57,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:57,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:57,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 00:28:57,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:28:57,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:57,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 00:28:57,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:28:57,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:57,484 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-11 00:28:57,484 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 68 states and 84 transitions. cyclomatic complexity: 23 Second operand 4 states. [2021-10-11 00:28:57,521 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 68 states and 84 transitions. cyclomatic complexity: 23. Second operand 4 states. Result 108 states and 129 transitions. Complement of second has 7 states. [2021-10-11 00:28:57,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-11 00:28:57,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-11 00:28:57,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2021-10-11 00:28:57,523 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 11 letters. Loop has 4 letters. [2021-10-11 00:28:57,523 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:28:57,523 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-11 00:28:57,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:57,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:57,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 00:28:57,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:28:57,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:57,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 00:28:57,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:28:57,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:57,594 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-11 00:28:57,594 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 68 states and 84 transitions. cyclomatic complexity: 23 Second operand 4 states. [2021-10-11 00:28:57,638 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 68 states and 84 transitions. cyclomatic complexity: 23. Second operand 4 states. Result 123 states and 147 transitions. Complement of second has 8 states. [2021-10-11 00:28:57,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-11 00:28:57,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-11 00:28:57,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2021-10-11 00:28:57,641 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 11 letters. Loop has 4 letters. [2021-10-11 00:28:57,641 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:28:57,641 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 15 letters. Loop has 4 letters. [2021-10-11 00:28:57,642 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:28:57,642 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 11 letters. Loop has 8 letters. [2021-10-11 00:28:57,642 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:28:57,643 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 123 states and 147 transitions. [2021-10-11 00:28:57,644 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 26 [2021-10-11 00:28:57,645 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 123 states to 88 states and 106 transitions. [2021-10-11 00:28:57,645 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2021-10-11 00:28:57,645 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2021-10-11 00:28:57,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 106 transitions. [2021-10-11 00:28:57,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-11 00:28:57,646 INFO L692 BuchiCegarLoop]: Abstraction has 88 states and 106 transitions. [2021-10-11 00:28:57,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states and 106 transitions. [2021-10-11 00:28:57,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 55. [2021-10-11 00:28:57,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-10-11 00:28:57,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 69 transitions. [2021-10-11 00:28:57,648 INFO L715 BuchiCegarLoop]: Abstraction has 55 states and 69 transitions. [2021-10-11 00:28:57,648 INFO L595 BuchiCegarLoop]: Abstraction has 55 states and 69 transitions. [2021-10-11 00:28:57,648 INFO L427 BuchiCegarLoop]: ======== Iteration 11============ [2021-10-11 00:28:57,648 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 55 states and 69 transitions. [2021-10-11 00:28:57,649 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-10-11 00:28:57,649 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:28:57,649 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:28:57,650 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 3, 2, 1, 1, 1, 1] [2021-10-11 00:28:57,650 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [4, 3, 3, 2, 2, 1, 1] [2021-10-11 00:28:57,650 INFO L794 eck$LassoCheckResult]: Stem: 2971#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 2972#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3010#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 3012#L12-2 assume !(main_~i~0 <= 0); 3011#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3009#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3008#L12 assume !(main_~i~0 >= 10); 3007#L12-2 assume !(main_~i~0 <= 0); 3005#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3003#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3001#L12 assume !(main_~i~0 >= 10); 2988#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 2994#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 2997#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2995#L12 assume !(main_~i~0 >= 10); 2993#L12-2 assume !(main_~i~0 <= 0); 2981#L15-1 [2021-10-11 00:28:57,650 INFO L796 eck$LassoCheckResult]: Loop: 2981#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 2973#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2974#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 2977#L12-2 assume !(main_~i~0 <= 0); 2979#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 2980#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3021#L12 assume !(main_~i~0 >= 10); 3006#L12-2 assume !(main_~i~0 <= 0); 2999#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3002#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3000#L12 assume !(main_~i~0 >= 10); 2998#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 2994#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 2997#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2995#L12 assume !(main_~i~0 >= 10); 2993#L12-2 assume !(main_~i~0 <= 0); 2981#L15-1 [2021-10-11 00:28:57,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:57,651 INFO L82 PathProgramCache]: Analyzing trace with hash -120270543, now seen corresponding path program 1 times [2021-10-11 00:28:57,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:57,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374822089] [2021-10-11 00:28:57,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:57,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:57,677 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:57,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374822089] [2021-10-11 00:28:57,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989838184] [2021-10-11 00:28:57,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:28:57,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:57,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 00:28:57,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:28:57,724 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:57,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:28:57,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-10-11 00:28:57,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884599133] [2021-10-11 00:28:57,725 INFO L799 eck$LassoCheckResult]: stem already infeasible [2021-10-11 00:28:57,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:57,725 INFO L82 PathProgramCache]: Analyzing trace with hash 511811097, now seen corresponding path program 2 times [2021-10-11 00:28:57,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:57,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623302897] [2021-10-11 00:28:57,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:57,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:57,749 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:57,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623302897] [2021-10-11 00:28:57,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800681873] [2021-10-11 00:28:57,750 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:28:57,778 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-11 00:28:57,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:28:57,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 00:28:57,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:28:57,800 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:57,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:28:57,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-10-11 00:28:57,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132545293] [2021-10-11 00:28:57,801 INFO L811 eck$LassoCheckResult]: loop already infeasible [2021-10-11 00:28:57,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:28:57,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:28:57,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:28:57,802 INFO L87 Difference]: Start difference. First operand 55 states and 69 transitions. cyclomatic complexity: 20 Second operand 5 states. [2021-10-11 00:28:57,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:28:57,837 INFO L93 Difference]: Finished difference Result 81 states and 100 transitions. [2021-10-11 00:28:57,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 00:28:57,838 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 81 states and 100 transitions. [2021-10-11 00:28:57,838 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 21 [2021-10-11 00:28:57,839 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 81 states to 79 states and 97 transitions. [2021-10-11 00:28:57,839 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2021-10-11 00:28:57,839 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2021-10-11 00:28:57,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 79 states and 97 transitions. [2021-10-11 00:28:57,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-11 00:28:57,839 INFO L692 BuchiCegarLoop]: Abstraction has 79 states and 97 transitions. [2021-10-11 00:28:57,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states and 97 transitions. [2021-10-11 00:28:57,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 66. [2021-10-11 00:28:57,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-10-11 00:28:57,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 82 transitions. [2021-10-11 00:28:57,841 INFO L715 BuchiCegarLoop]: Abstraction has 66 states and 82 transitions. [2021-10-11 00:28:57,841 INFO L595 BuchiCegarLoop]: Abstraction has 66 states and 82 transitions. [2021-10-11 00:28:57,841 INFO L427 BuchiCegarLoop]: ======== Iteration 12============ [2021-10-11 00:28:57,841 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 66 states and 82 transitions. [2021-10-11 00:28:57,841 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 20 [2021-10-11 00:28:57,841 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:28:57,841 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:28:57,842 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [5, 4, 4, 3, 1, 1, 1, 1] [2021-10-11 00:28:57,842 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [5, 4, 4, 3, 2, 1, 1] [2021-10-11 00:28:57,842 INFO L794 eck$LassoCheckResult]: Stem: 3208#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 3209#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3213#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 3267#L12-2 assume !(main_~i~0 <= 0); 3266#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3265#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3214#L12 assume !(main_~i~0 >= 10); 3215#L12-2 assume !(main_~i~0 <= 0); 3269#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3268#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3216#L12 assume !(main_~i~0 >= 10); 3217#L12-2 assume !(main_~i~0 <= 0); 3258#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3255#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3256#L12 assume !(main_~i~0 >= 10); 3235#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 3227#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 3228#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3223#L12 assume !(main_~i~0 >= 10); 3224#L12-2 assume !(main_~i~0 <= 0); 3218#L15-1 [2021-10-11 00:28:57,843 INFO L796 eck$LassoCheckResult]: Loop: 3218#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 3219#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3264#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 3204#L12-2 assume !(main_~i~0 <= 0); 3205#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3210#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3211#L12 assume !(main_~i~0 >= 10); 3263#L12-2 assume !(main_~i~0 <= 0); 3262#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3261#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3260#L12 assume !(main_~i~0 >= 10); 3259#L12-2 assume !(main_~i~0 <= 0); 3257#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3254#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3230#L12 assume !(main_~i~0 >= 10); 3231#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 3227#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 3228#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3223#L12 assume !(main_~i~0 >= 10); 3224#L12-2 assume !(main_~i~0 <= 0); 3218#L15-1 [2021-10-11 00:28:57,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:57,843 INFO L82 PathProgramCache]: Analyzing trace with hash -353280474, now seen corresponding path program 2 times [2021-10-11 00:28:57,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:57,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862595708] [2021-10-11 00:28:57,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:57,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:57,874 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:57,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862595708] [2021-10-11 00:28:57,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197938132] [2021-10-11 00:28:57,875 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:28:57,896 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-11 00:28:57,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:28:57,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 00:28:57,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:28:57,936 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:57,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:28:57,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-11 00:28:57,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622594672] [2021-10-11 00:28:57,937 INFO L799 eck$LassoCheckResult]: stem already infeasible [2021-10-11 00:28:57,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:57,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1575127282, now seen corresponding path program 3 times [2021-10-11 00:28:57,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:57,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592997989] [2021-10-11 00:28:57,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:57,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:57,969 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 25 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:57,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592997989] [2021-10-11 00:28:57,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001850225] [2021-10-11 00:28:57,970 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-11 00:28:58,013 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-11 00:28:58,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:28:58,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 00:28:58,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:28:58,055 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 25 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:58,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:28:58,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-11 00:28:58,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291501604] [2021-10-11 00:28:58,057 INFO L811 eck$LassoCheckResult]: loop already infeasible [2021-10-11 00:28:58,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:28:58,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 00:28:58,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:28:58,057 INFO L87 Difference]: Start difference. First operand 66 states and 82 transitions. cyclomatic complexity: 22 Second operand 6 states. [2021-10-11 00:28:58,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:28:58,113 INFO L93 Difference]: Finished difference Result 97 states and 119 transitions. [2021-10-11 00:28:58,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 00:28:58,115 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 97 states and 119 transitions. [2021-10-11 00:28:58,118 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 25 [2021-10-11 00:28:58,119 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 97 states to 95 states and 116 transitions. [2021-10-11 00:28:58,119 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2021-10-11 00:28:58,119 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2021-10-11 00:28:58,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 95 states and 116 transitions. [2021-10-11 00:28:58,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-11 00:28:58,120 INFO L692 BuchiCegarLoop]: Abstraction has 95 states and 116 transitions. [2021-10-11 00:28:58,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states and 116 transitions. [2021-10-11 00:28:58,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 78. [2021-10-11 00:28:58,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2021-10-11 00:28:58,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 96 transitions. [2021-10-11 00:28:58,123 INFO L715 BuchiCegarLoop]: Abstraction has 78 states and 96 transitions. [2021-10-11 00:28:58,123 INFO L595 BuchiCegarLoop]: Abstraction has 78 states and 96 transitions. [2021-10-11 00:28:58,123 INFO L427 BuchiCegarLoop]: ======== Iteration 13============ [2021-10-11 00:28:58,123 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 78 states and 96 transitions. [2021-10-11 00:28:58,124 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 24 [2021-10-11 00:28:58,124 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:28:58,124 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:28:58,125 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [6, 5, 5, 4, 1, 1, 1, 1] [2021-10-11 00:28:58,126 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [6, 5, 5, 4, 2, 1, 1] [2021-10-11 00:28:58,126 INFO L794 eck$LassoCheckResult]: Stem: 3498#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 3499#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3503#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 3567#L12-2 assume !(main_~i~0 <= 0); 3566#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3565#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3504#L12 assume !(main_~i~0 >= 10); 3505#L12-2 assume !(main_~i~0 <= 0); 3569#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3568#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3506#L12 assume !(main_~i~0 >= 10); 3507#L12-2 assume !(main_~i~0 <= 0); 3571#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3570#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3545#L12 assume !(main_~i~0 >= 10); 3564#L12-2 assume !(main_~i~0 <= 0); 3548#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3544#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3546#L12 assume !(main_~i~0 >= 10); 3523#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 3517#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 3518#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3513#L12 assume !(main_~i~0 >= 10); 3514#L12-2 assume !(main_~i~0 <= 0); 3509#L15-1 [2021-10-11 00:28:58,126 INFO L796 eck$LassoCheckResult]: Loop: 3509#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 3500#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3501#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 3494#L12-2 assume !(main_~i~0 <= 0); 3495#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3508#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3563#L12 assume !(main_~i~0 >= 10); 3562#L12-2 assume !(main_~i~0 <= 0); 3561#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3560#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3559#L12 assume !(main_~i~0 >= 10); 3558#L12-2 assume !(main_~i~0 <= 0); 3557#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3556#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3555#L12 assume !(main_~i~0 >= 10); 3554#L12-2 assume !(main_~i~0 <= 0); 3547#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3543#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3524#L12 assume !(main_~i~0 >= 10); 3525#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 3517#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 3518#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3513#L12 assume !(main_~i~0 >= 10); 3514#L12-2 assume !(main_~i~0 <= 0); 3509#L15-1 [2021-10-11 00:28:58,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:58,127 INFO L82 PathProgramCache]: Analyzing trace with hash 828663963, now seen corresponding path program 3 times [2021-10-11 00:28:58,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:58,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635483960] [2021-10-11 00:28:58,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:58,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:58,173 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 27 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:58,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635483960] [2021-10-11 00:28:58,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014891856] [2021-10-11 00:28:58,174 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:28:58,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-10-11 00:28:58,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:28:58,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 00:28:58,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:28:58,241 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 27 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:58,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:28:58,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-10-11 00:28:58,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257726698] [2021-10-11 00:28:58,241 INFO L799 eck$LassoCheckResult]: stem already infeasible [2021-10-11 00:28:58,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:58,242 INFO L82 PathProgramCache]: Analyzing trace with hash -779498109, now seen corresponding path program 4 times [2021-10-11 00:28:58,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:58,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942488032] [2021-10-11 00:28:58,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:58,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:58,284 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 32 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:58,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942488032] [2021-10-11 00:28:58,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599196506] [2021-10-11 00:28:58,285 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:28:58,310 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-11 00:28:58,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:28:58,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 00:28:58,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:28:58,343 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 32 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:58,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:28:58,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-10-11 00:28:58,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655774615] [2021-10-11 00:28:58,344 INFO L811 eck$LassoCheckResult]: loop already infeasible [2021-10-11 00:28:58,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:28:58,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 00:28:58,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-11 00:28:58,345 INFO L87 Difference]: Start difference. First operand 78 states and 96 transitions. cyclomatic complexity: 24 Second operand 7 states. [2021-10-11 00:28:58,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:28:58,397 INFO L93 Difference]: Finished difference Result 113 states and 138 transitions. [2021-10-11 00:28:58,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 00:28:58,398 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 113 states and 138 transitions. [2021-10-11 00:28:58,398 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 29 [2021-10-11 00:28:58,399 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 113 states to 111 states and 135 transitions. [2021-10-11 00:28:58,399 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 37 [2021-10-11 00:28:58,400 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 37 [2021-10-11 00:28:58,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 111 states and 135 transitions. [2021-10-11 00:28:58,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-11 00:28:58,400 INFO L692 BuchiCegarLoop]: Abstraction has 111 states and 135 transitions. [2021-10-11 00:28:58,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states and 135 transitions. [2021-10-11 00:28:58,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 90. [2021-10-11 00:28:58,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2021-10-11 00:28:58,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 110 transitions. [2021-10-11 00:28:58,403 INFO L715 BuchiCegarLoop]: Abstraction has 90 states and 110 transitions. [2021-10-11 00:28:58,403 INFO L595 BuchiCegarLoop]: Abstraction has 90 states and 110 transitions. [2021-10-11 00:28:58,403 INFO L427 BuchiCegarLoop]: ======== Iteration 14============ [2021-10-11 00:28:58,403 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 90 states and 110 transitions. [2021-10-11 00:28:58,404 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 28 [2021-10-11 00:28:58,404 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:28:58,404 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:28:58,406 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [7, 6, 6, 5, 1, 1, 1, 1] [2021-10-11 00:28:58,406 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [7, 6, 6, 5, 2, 1, 1] [2021-10-11 00:28:58,406 INFO L794 eck$LassoCheckResult]: Stem: 3842#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 3843#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3847#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 3919#L12-2 assume !(main_~i~0 <= 0); 3918#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3917#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3848#L12 assume !(main_~i~0 >= 10); 3849#L12-2 assume !(main_~i~0 <= 0); 3926#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3924#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3850#L12 assume !(main_~i~0 >= 10); 3851#L12-2 assume !(main_~i~0 <= 0); 3927#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3925#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3923#L12 assume !(main_~i~0 >= 10); 3922#L12-2 assume !(main_~i~0 <= 0); 3921#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3920#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3892#L12 assume !(main_~i~0 >= 10); 3902#L12-2 assume !(main_~i~0 <= 0); 3895#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3891#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3893#L12 assume !(main_~i~0 >= 10); 3869#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 3861#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 3862#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3857#L12 assume !(main_~i~0 >= 10); 3858#L12-2 assume !(main_~i~0 <= 0); 3853#L15-1 [2021-10-11 00:28:58,406 INFO L796 eck$LassoCheckResult]: Loop: 3853#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 3844#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3845#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 3838#L12-2 assume !(main_~i~0 <= 0); 3839#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3852#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3916#L12 assume !(main_~i~0 >= 10); 3915#L12-2 assume !(main_~i~0 <= 0); 3914#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3913#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3912#L12 assume !(main_~i~0 >= 10); 3911#L12-2 assume !(main_~i~0 <= 0); 3910#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3909#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3908#L12 assume !(main_~i~0 >= 10); 3907#L12-2 assume !(main_~i~0 <= 0); 3906#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3905#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3904#L12 assume !(main_~i~0 >= 10); 3903#L12-2 assume !(main_~i~0 <= 0); 3896#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3894#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3864#L12 assume !(main_~i~0 >= 10); 3865#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 3861#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 3862#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3857#L12 assume !(main_~i~0 >= 10); 3858#L12-2 assume !(main_~i~0 <= 0); 3853#L15-1 [2021-10-11 00:28:58,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:58,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1716309872, now seen corresponding path program 4 times [2021-10-11 00:28:58,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:58,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409669648] [2021-10-11 00:28:58,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:58,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:58,459 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 33 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:58,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409669648] [2021-10-11 00:28:58,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376075734] [2021-10-11 00:28:58,459 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-11 00:28:58,497 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-11 00:28:58,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:28:58,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-11 00:28:58,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:28:58,541 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 33 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:58,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:28:58,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-10-11 00:28:58,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421760122] [2021-10-11 00:28:58,543 INFO L799 eck$LassoCheckResult]: stem already infeasible [2021-10-11 00:28:58,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:58,543 INFO L82 PathProgramCache]: Analyzing trace with hash 759947640, now seen corresponding path program 5 times [2021-10-11 00:28:58,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:58,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319831766] [2021-10-11 00:28:58,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:58,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:58,596 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 39 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:58,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319831766] [2021-10-11 00:28:58,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193340827] [2021-10-11 00:28:58,597 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:28:58,619 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-11 00:28:58,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:28:58,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-11 00:28:58,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:28:58,673 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 39 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:58,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:28:58,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-10-11 00:28:58,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797662832] [2021-10-11 00:28:58,674 INFO L811 eck$LassoCheckResult]: loop already infeasible [2021-10-11 00:28:58,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:28:58,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 00:28:58,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-11 00:28:58,675 INFO L87 Difference]: Start difference. First operand 90 states and 110 transitions. cyclomatic complexity: 26 Second operand 8 states. [2021-10-11 00:28:58,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:28:58,757 INFO L93 Difference]: Finished difference Result 129 states and 157 transitions. [2021-10-11 00:28:58,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 00:28:58,757 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 129 states and 157 transitions. [2021-10-11 00:28:58,758 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 33 [2021-10-11 00:28:58,760 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 129 states to 127 states and 154 transitions. [2021-10-11 00:28:58,760 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2021-10-11 00:28:58,760 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2021-10-11 00:28:58,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 127 states and 154 transitions. [2021-10-11 00:28:58,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-11 00:28:58,761 INFO L692 BuchiCegarLoop]: Abstraction has 127 states and 154 transitions. [2021-10-11 00:28:58,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states and 154 transitions. [2021-10-11 00:28:58,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 102. [2021-10-11 00:28:58,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2021-10-11 00:28:58,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 124 transitions. [2021-10-11 00:28:58,764 INFO L715 BuchiCegarLoop]: Abstraction has 102 states and 124 transitions. [2021-10-11 00:28:58,764 INFO L595 BuchiCegarLoop]: Abstraction has 102 states and 124 transitions. [2021-10-11 00:28:58,764 INFO L427 BuchiCegarLoop]: ======== Iteration 15============ [2021-10-11 00:28:58,764 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 102 states and 124 transitions. [2021-10-11 00:28:58,765 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 32 [2021-10-11 00:28:58,765 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:28:58,765 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:28:58,766 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [8, 7, 7, 6, 1, 1, 1, 1] [2021-10-11 00:28:58,766 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [8, 7, 7, 6, 2, 1, 1] [2021-10-11 00:28:58,766 INFO L794 eck$LassoCheckResult]: Stem: 4240#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 4241#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4245#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 4325#L12-2 assume !(main_~i~0 <= 0); 4324#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4323#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4246#L12 assume !(main_~i~0 >= 10); 4247#L12-2 assume !(main_~i~0 <= 0); 4336#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4334#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4248#L12 assume !(main_~i~0 >= 10); 4249#L12-2 assume !(main_~i~0 <= 0); 4337#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4335#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4333#L12 assume !(main_~i~0 >= 10); 4332#L12-2 assume !(main_~i~0 <= 0); 4331#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4330#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4329#L12 assume !(main_~i~0 >= 10); 4328#L12-2 assume !(main_~i~0 <= 0); 4327#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4326#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4295#L12 assume !(main_~i~0 >= 10); 4322#L12-2 assume !(main_~i~0 <= 0); 4298#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4294#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4296#L12 assume !(main_~i~0 >= 10); 4267#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 4259#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 4260#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4255#L12 assume !(main_~i~0 >= 10); 4256#L12-2 assume !(main_~i~0 <= 0); 4251#L15-1 [2021-10-11 00:28:58,767 INFO L796 eck$LassoCheckResult]: Loop: 4251#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 4242#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4243#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 4236#L12-2 assume !(main_~i~0 <= 0); 4237#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4250#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4321#L12 assume !(main_~i~0 >= 10); 4320#L12-2 assume !(main_~i~0 <= 0); 4319#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4318#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4317#L12 assume !(main_~i~0 >= 10); 4316#L12-2 assume !(main_~i~0 <= 0); 4315#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4314#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4313#L12 assume !(main_~i~0 >= 10); 4312#L12-2 assume !(main_~i~0 <= 0); 4311#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4310#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4309#L12 assume !(main_~i~0 >= 10); 4308#L12-2 assume !(main_~i~0 <= 0); 4307#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4306#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4305#L12 assume !(main_~i~0 >= 10); 4304#L12-2 assume !(main_~i~0 <= 0); 4297#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4293#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4262#L12 assume !(main_~i~0 >= 10); 4263#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 4259#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 4260#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4255#L12 assume !(main_~i~0 >= 10); 4256#L12-2 assume !(main_~i~0 <= 0); 4251#L15-1 [2021-10-11 00:28:58,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:58,767 INFO L82 PathProgramCache]: Analyzing trace with hash 750974469, now seen corresponding path program 5 times [2021-10-11 00:28:58,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:58,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628387052] [2021-10-11 00:28:58,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:58,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:58,829 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 39 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:58,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628387052] [2021-10-11 00:28:58,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711510430] [2021-10-11 00:28:58,829 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:28:58,859 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-10-11 00:28:58,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:28:58,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-11 00:28:58,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:28:58,924 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 39 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:58,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:28:58,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-10-11 00:28:58,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277879222] [2021-10-11 00:28:58,925 INFO L799 eck$LassoCheckResult]: stem already infeasible [2021-10-11 00:28:58,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:58,925 INFO L82 PathProgramCache]: Analyzing trace with hash -246877459, now seen corresponding path program 6 times [2021-10-11 00:28:58,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:58,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715878072] [2021-10-11 00:28:58,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:58,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:58,994 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 46 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:58,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715878072] [2021-10-11 00:28:58,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472833834] [2021-10-11 00:28:58,994 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:28:59,044 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-10-11 00:28:59,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:28:59,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-11 00:28:59,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:28:59,099 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 46 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:59,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:28:59,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-10-11 00:28:59,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542994306] [2021-10-11 00:28:59,101 INFO L811 eck$LassoCheckResult]: loop already infeasible [2021-10-11 00:28:59,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:28:59,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-11 00:28:59,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-11 00:28:59,102 INFO L87 Difference]: Start difference. First operand 102 states and 124 transitions. cyclomatic complexity: 28 Second operand 9 states. [2021-10-11 00:28:59,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:28:59,168 INFO L93 Difference]: Finished difference Result 145 states and 176 transitions. [2021-10-11 00:28:59,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-11 00:28:59,169 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 145 states and 176 transitions. [2021-10-11 00:28:59,171 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 37 [2021-10-11 00:28:59,172 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 145 states to 143 states and 173 transitions. [2021-10-11 00:28:59,173 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 45 [2021-10-11 00:28:59,173 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 45 [2021-10-11 00:28:59,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 143 states and 173 transitions. [2021-10-11 00:28:59,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-11 00:28:59,173 INFO L692 BuchiCegarLoop]: Abstraction has 143 states and 173 transitions. [2021-10-11 00:28:59,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states and 173 transitions. [2021-10-11 00:28:59,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 114. [2021-10-11 00:28:59,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2021-10-11 00:28:59,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 138 transitions. [2021-10-11 00:28:59,177 INFO L715 BuchiCegarLoop]: Abstraction has 114 states and 138 transitions. [2021-10-11 00:28:59,177 INFO L595 BuchiCegarLoop]: Abstraction has 114 states and 138 transitions. [2021-10-11 00:28:59,177 INFO L427 BuchiCegarLoop]: ======== Iteration 16============ [2021-10-11 00:28:59,177 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 114 states and 138 transitions. [2021-10-11 00:28:59,178 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 36 [2021-10-11 00:28:59,178 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:28:59,178 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:28:59,179 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [9, 8, 8, 7, 1, 1, 1, 1] [2021-10-11 00:28:59,180 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [9, 8, 8, 7, 2, 1, 1] [2021-10-11 00:28:59,180 INFO L794 eck$LassoCheckResult]: Stem: 4692#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 4693#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4697#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 4785#L12-2 assume !(main_~i~0 <= 0); 4784#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4783#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4698#L12 assume !(main_~i~0 >= 10); 4699#L12-2 assume !(main_~i~0 <= 0); 4800#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4798#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4700#L12 assume !(main_~i~0 >= 10); 4701#L12-2 assume !(main_~i~0 <= 0); 4801#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4799#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4797#L12 assume !(main_~i~0 >= 10); 4796#L12-2 assume !(main_~i~0 <= 0); 4795#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4794#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4793#L12 assume !(main_~i~0 >= 10); 4792#L12-2 assume !(main_~i~0 <= 0); 4791#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4790#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4789#L12 assume !(main_~i~0 >= 10); 4788#L12-2 assume !(main_~i~0 <= 0); 4787#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4786#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4750#L12 assume !(main_~i~0 >= 10); 4760#L12-2 assume !(main_~i~0 <= 0); 4753#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4749#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4751#L12 assume !(main_~i~0 >= 10); 4719#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 4711#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 4712#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4707#L12 assume !(main_~i~0 >= 10); 4708#L12-2 assume !(main_~i~0 <= 0); 4703#L15-1 [2021-10-11 00:28:59,180 INFO L796 eck$LassoCheckResult]: Loop: 4703#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 4694#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4695#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 4688#L12-2 assume !(main_~i~0 <= 0); 4689#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4702#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4782#L12 assume !(main_~i~0 >= 10); 4781#L12-2 assume !(main_~i~0 <= 0); 4780#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4779#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4778#L12 assume !(main_~i~0 >= 10); 4777#L12-2 assume !(main_~i~0 <= 0); 4776#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4775#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4774#L12 assume !(main_~i~0 >= 10); 4773#L12-2 assume !(main_~i~0 <= 0); 4772#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4771#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4770#L12 assume !(main_~i~0 >= 10); 4769#L12-2 assume !(main_~i~0 <= 0); 4768#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4767#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4766#L12 assume !(main_~i~0 >= 10); 4765#L12-2 assume !(main_~i~0 <= 0); 4764#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4763#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4762#L12 assume !(main_~i~0 >= 10); 4761#L12-2 assume !(main_~i~0 <= 0); 4754#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4752#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4714#L12 assume !(main_~i~0 >= 10); 4715#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 4711#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 4712#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4707#L12 assume !(main_~i~0 >= 10); 4708#L12-2 assume !(main_~i~0 <= 0); 4703#L15-1 [2021-10-11 00:28:59,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:59,181 INFO L82 PathProgramCache]: Analyzing trace with hash 2128148730, now seen corresponding path program 6 times [2021-10-11 00:28:59,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:59,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359811728] [2021-10-11 00:28:59,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:59,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:59,269 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 45 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:59,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359811728] [2021-10-11 00:28:59,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894038168] [2021-10-11 00:28:59,270 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:28:59,308 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-10-11 00:28:59,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:28:59,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-11 00:28:59,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:28:59,367 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 45 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:59,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:28:59,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-10-11 00:28:59,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966055522] [2021-10-11 00:28:59,368 INFO L799 eck$LassoCheckResult]: stem already infeasible [2021-10-11 00:28:59,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:59,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1690714594, now seen corresponding path program 7 times [2021-10-11 00:28:59,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:59,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316709767] [2021-10-11 00:28:59,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:59,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:59,477 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 53 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:59,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316709767] [2021-10-11 00:28:59,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108141975] [2021-10-11 00:28:59,477 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:28:59,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:59,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-11 00:28:59,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:28:59,568 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 53 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:59,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:28:59,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-10-11 00:28:59,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506217133] [2021-10-11 00:28:59,571 INFO L811 eck$LassoCheckResult]: loop already infeasible [2021-10-11 00:28:59,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:28:59,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-11 00:28:59,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-11 00:28:59,572 INFO L87 Difference]: Start difference. First operand 114 states and 138 transitions. cyclomatic complexity: 30 Second operand 10 states. [2021-10-11 00:28:59,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:28:59,668 INFO L93 Difference]: Finished difference Result 161 states and 195 transitions. [2021-10-11 00:28:59,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-11 00:28:59,671 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 161 states and 195 transitions. [2021-10-11 00:28:59,672 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 41 [2021-10-11 00:28:59,674 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 161 states to 159 states and 192 transitions. [2021-10-11 00:28:59,674 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 49 [2021-10-11 00:28:59,674 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 49 [2021-10-11 00:28:59,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 159 states and 192 transitions. [2021-10-11 00:28:59,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-11 00:28:59,675 INFO L692 BuchiCegarLoop]: Abstraction has 159 states and 192 transitions. [2021-10-11 00:28:59,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states and 192 transitions. [2021-10-11 00:28:59,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 126. [2021-10-11 00:28:59,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2021-10-11 00:28:59,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 152 transitions. [2021-10-11 00:28:59,678 INFO L715 BuchiCegarLoop]: Abstraction has 126 states and 152 transitions. [2021-10-11 00:28:59,678 INFO L595 BuchiCegarLoop]: Abstraction has 126 states and 152 transitions. [2021-10-11 00:28:59,678 INFO L427 BuchiCegarLoop]: ======== Iteration 17============ [2021-10-11 00:28:59,678 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 126 states and 152 transitions. [2021-10-11 00:28:59,679 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 40 [2021-10-11 00:28:59,680 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:28:59,680 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:28:59,682 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [10, 9, 9, 8, 1, 1, 1, 1] [2021-10-11 00:28:59,683 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [10, 9, 9, 8, 2, 1, 1] [2021-10-11 00:28:59,683 INFO L794 eck$LassoCheckResult]: Stem: 5198#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 5199#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5203#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 5299#L12-2 assume !(main_~i~0 <= 0); 5298#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5297#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5204#L12 assume !(main_~i~0 >= 10); 5205#L12-2 assume !(main_~i~0 <= 0); 5318#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5316#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5206#L12 assume !(main_~i~0 >= 10); 5207#L12-2 assume !(main_~i~0 <= 0); 5319#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5317#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5315#L12 assume !(main_~i~0 >= 10); 5314#L12-2 assume !(main_~i~0 <= 0); 5313#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5312#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5311#L12 assume !(main_~i~0 >= 10); 5310#L12-2 assume !(main_~i~0 <= 0); 5309#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5308#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5307#L12 assume !(main_~i~0 >= 10); 5306#L12-2 assume !(main_~i~0 <= 0); 5305#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5304#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5303#L12 assume !(main_~i~0 >= 10); 5302#L12-2 assume !(main_~i~0 <= 0); 5301#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5300#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5260#L12 assume !(main_~i~0 >= 10); 5270#L12-2 assume !(main_~i~0 <= 0); 5263#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5259#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5261#L12 assume !(main_~i~0 >= 10); 5225#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 5217#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 5218#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5213#L12 assume !(main_~i~0 >= 10); 5214#L12-2 assume !(main_~i~0 <= 0); 5209#L15-1 [2021-10-11 00:28:59,683 INFO L796 eck$LassoCheckResult]: Loop: 5209#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 5200#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5201#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 5194#L12-2 assume !(main_~i~0 <= 0); 5195#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5208#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5296#L12 assume !(main_~i~0 >= 10); 5295#L12-2 assume !(main_~i~0 <= 0); 5294#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5293#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5292#L12 assume !(main_~i~0 >= 10); 5291#L12-2 assume !(main_~i~0 <= 0); 5290#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5289#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5288#L12 assume !(main_~i~0 >= 10); 5287#L12-2 assume !(main_~i~0 <= 0); 5286#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5285#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5284#L12 assume !(main_~i~0 >= 10); 5283#L12-2 assume !(main_~i~0 <= 0); 5282#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5281#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5280#L12 assume !(main_~i~0 >= 10); 5279#L12-2 assume !(main_~i~0 <= 0); 5278#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5277#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5276#L12 assume !(main_~i~0 >= 10); 5275#L12-2 assume !(main_~i~0 <= 0); 5274#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5273#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5272#L12 assume !(main_~i~0 >= 10); 5271#L12-2 assume !(main_~i~0 <= 0); 5264#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5262#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5220#L12 assume !(main_~i~0 >= 10); 5221#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 5217#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 5218#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5213#L12 assume !(main_~i~0 >= 10); 5214#L12-2 assume !(main_~i~0 <= 0); 5209#L15-1 [2021-10-11 00:28:59,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:59,684 INFO L82 PathProgramCache]: Analyzing trace with hash -6653585, now seen corresponding path program 7 times [2021-10-11 00:28:59,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:59,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895784764] [2021-10-11 00:28:59,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:59,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:59,774 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 51 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:59,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895784764] [2021-10-11 00:28:59,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986069595] [2021-10-11 00:28:59,775 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:28:59,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:59,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-11 00:28:59,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:28:59,864 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 51 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:59,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:28:59,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-10-11 00:28:59,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864106718] [2021-10-11 00:28:59,865 INFO L799 eck$LassoCheckResult]: stem already infeasible [2021-10-11 00:28:59,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:59,865 INFO L82 PathProgramCache]: Analyzing trace with hash 711528023, now seen corresponding path program 8 times [2021-10-11 00:28:59,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:59,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478855574] [2021-10-11 00:28:59,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:59,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:59,958 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 60 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:59,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478855574] [2021-10-11 00:28:59,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186872338] [2021-10-11 00:28:59,959 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:28:59,990 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-11 00:28:59,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:28:59,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-11 00:28:59,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:29:00,041 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 60 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:29:00,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:29:00,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-10-11 00:29:00,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139450233] [2021-10-11 00:29:00,043 INFO L811 eck$LassoCheckResult]: loop already infeasible [2021-10-11 00:29:00,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:29:00,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-11 00:29:00,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-11 00:29:00,044 INFO L87 Difference]: Start difference. First operand 126 states and 152 transitions. cyclomatic complexity: 32 Second operand 11 states. [2021-10-11 00:29:00,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:00,143 INFO L93 Difference]: Finished difference Result 177 states and 214 transitions. [2021-10-11 00:29:00,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-11 00:29:00,143 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 177 states and 214 transitions. [2021-10-11 00:29:00,145 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 45 [2021-10-11 00:29:00,147 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 177 states to 175 states and 211 transitions. [2021-10-11 00:29:00,147 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 53 [2021-10-11 00:29:00,147 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53 [2021-10-11 00:29:00,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 175 states and 211 transitions. [2021-10-11 00:29:00,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-11 00:29:00,148 INFO L692 BuchiCegarLoop]: Abstraction has 175 states and 211 transitions. [2021-10-11 00:29:00,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states and 211 transitions. [2021-10-11 00:29:00,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 138. [2021-10-11 00:29:00,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2021-10-11 00:29:00,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 166 transitions. [2021-10-11 00:29:00,154 INFO L715 BuchiCegarLoop]: Abstraction has 138 states and 166 transitions. [2021-10-11 00:29:00,155 INFO L595 BuchiCegarLoop]: Abstraction has 138 states and 166 transitions. [2021-10-11 00:29:00,155 INFO L427 BuchiCegarLoop]: ======== Iteration 18============ [2021-10-11 00:29:00,155 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 138 states and 166 transitions. [2021-10-11 00:29:00,156 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 44 [2021-10-11 00:29:00,156 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:29:00,156 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:29:00,159 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 9, 1, 1, 1, 1] [2021-10-11 00:29:00,159 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [11, 10, 10, 9, 2, 1, 1] [2021-10-11 00:29:00,160 INFO L794 eck$LassoCheckResult]: Stem: 5758#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 5759#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5763#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 5867#L12-2 assume !(main_~i~0 <= 0); 5866#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5865#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5764#L12 assume !(main_~i~0 >= 10); 5765#L12-2 assume !(main_~i~0 <= 0); 5890#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5888#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5766#L12 assume !(main_~i~0 >= 10); 5767#L12-2 assume !(main_~i~0 <= 0); 5891#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5889#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5887#L12 assume !(main_~i~0 >= 10); 5886#L12-2 assume !(main_~i~0 <= 0); 5885#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5884#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5883#L12 assume !(main_~i~0 >= 10); 5882#L12-2 assume !(main_~i~0 <= 0); 5881#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5880#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5879#L12 assume !(main_~i~0 >= 10); 5878#L12-2 assume !(main_~i~0 <= 0); 5877#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5876#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5875#L12 assume !(main_~i~0 >= 10); 5874#L12-2 assume !(main_~i~0 <= 0); 5873#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5872#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5871#L12 assume !(main_~i~0 >= 10); 5870#L12-2 assume !(main_~i~0 <= 0); 5869#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5868#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5825#L12 assume !(main_~i~0 >= 10); 5864#L12-2 assume !(main_~i~0 <= 0); 5828#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5824#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5826#L12 assume !(main_~i~0 >= 10); 5783#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 5777#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 5778#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5773#L12 assume !(main_~i~0 >= 10); 5774#L12-2 assume !(main_~i~0 <= 0); 5769#L15-1 [2021-10-11 00:29:00,161 INFO L796 eck$LassoCheckResult]: Loop: 5769#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 5760#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5761#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 5754#L12-2 assume !(main_~i~0 <= 0); 5755#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5768#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5863#L12 assume !(main_~i~0 >= 10); 5862#L12-2 assume !(main_~i~0 <= 0); 5861#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5860#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5859#L12 assume !(main_~i~0 >= 10); 5858#L12-2 assume !(main_~i~0 <= 0); 5857#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5856#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5855#L12 assume !(main_~i~0 >= 10); 5854#L12-2 assume !(main_~i~0 <= 0); 5853#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5852#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5851#L12 assume !(main_~i~0 >= 10); 5850#L12-2 assume !(main_~i~0 <= 0); 5849#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5848#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5847#L12 assume !(main_~i~0 >= 10); 5846#L12-2 assume !(main_~i~0 <= 0); 5845#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5844#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5843#L12 assume !(main_~i~0 >= 10); 5842#L12-2 assume !(main_~i~0 <= 0); 5841#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5840#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5839#L12 assume !(main_~i~0 >= 10); 5838#L12-2 assume !(main_~i~0 <= 0); 5837#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5836#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5835#L12 assume !(main_~i~0 >= 10); 5834#L12-2 assume !(main_~i~0 <= 0); 5827#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5823#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5784#L12 assume !(main_~i~0 >= 10); 5785#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 5777#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 5778#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5773#L12 assume !(main_~i~0 >= 10); 5774#L12-2 assume !(main_~i~0 <= 0); 5769#L15-1 [2021-10-11 00:29:00,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:00,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1242347364, now seen corresponding path program 8 times [2021-10-11 00:29:00,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:00,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167049376] [2021-10-11 00:29:00,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:00,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:00,277 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 57 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:29:00,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167049376] [2021-10-11 00:29:00,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829031267] [2021-10-11 00:29:00,278 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:29:00,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-11 00:29:00,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:29:00,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-11 00:29:00,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:29:00,402 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 57 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:29:00,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:29:00,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2021-10-11 00:29:00,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23799442] [2021-10-11 00:29:00,404 INFO L799 eck$LassoCheckResult]: stem already infeasible [2021-10-11 00:29:00,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:00,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1875470260, now seen corresponding path program 9 times [2021-10-11 00:29:00,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:00,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090423095] [2021-10-11 00:29:00,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:00,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:00,520 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 67 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:29:00,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090423095] [2021-10-11 00:29:00,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506028616] [2021-10-11 00:29:00,520 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:29:00,583 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-10-11 00:29:00,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:29:00,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-11 00:29:00,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:29:00,644 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 67 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:29:00,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:29:00,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2021-10-11 00:29:00,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963174400] [2021-10-11 00:29:00,646 INFO L811 eck$LassoCheckResult]: loop already infeasible [2021-10-11 00:29:00,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:29:00,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-11 00:29:00,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-11 00:29:00,647 INFO L87 Difference]: Start difference. First operand 138 states and 166 transitions. cyclomatic complexity: 34 Second operand 12 states. [2021-10-11 00:29:00,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:00,826 INFO L93 Difference]: Finished difference Result 307 states and 361 transitions. [2021-10-11 00:29:00,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-11 00:29:00,827 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 307 states and 361 transitions. [2021-10-11 00:29:00,830 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 104 [2021-10-11 00:29:00,833 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 307 states to 299 states and 352 transitions. [2021-10-11 00:29:00,833 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 104 [2021-10-11 00:29:00,834 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 176 [2021-10-11 00:29:00,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 299 states and 352 transitions. [2021-10-11 00:29:00,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-11 00:29:00,834 INFO L692 BuchiCegarLoop]: Abstraction has 299 states and 352 transitions. [2021-10-11 00:29:00,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states and 352 transitions. [2021-10-11 00:29:00,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 214. [2021-10-11 00:29:00,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2021-10-11 00:29:00,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 258 transitions. [2021-10-11 00:29:00,841 INFO L715 BuchiCegarLoop]: Abstraction has 214 states and 258 transitions. [2021-10-11 00:29:00,841 INFO L595 BuchiCegarLoop]: Abstraction has 214 states and 258 transitions. [2021-10-11 00:29:00,841 INFO L427 BuchiCegarLoop]: ======== Iteration 19============ [2021-10-11 00:29:00,841 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 214 states and 258 transitions. [2021-10-11 00:29:00,843 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 80 [2021-10-11 00:29:00,843 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:29:00,843 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:29:00,844 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 10, 1, 1, 1] [2021-10-11 00:29:00,844 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [12, 11, 11, 10, 2, 1, 1] [2021-10-11 00:29:00,844 INFO L794 eck$LassoCheckResult]: Stem: 6486#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 6487#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6491#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 6599#L12-2 assume !(main_~i~0 <= 0); 6597#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6595#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6492#L12 assume !(main_~i~0 >= 10); 6493#L12-2 assume !(main_~i~0 <= 0); 6639#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6636#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6494#L12 assume !(main_~i~0 >= 10); 6495#L12-2 assume !(main_~i~0 <= 0); 6625#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6624#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6623#L12 assume !(main_~i~0 >= 10); 6622#L12-2 assume !(main_~i~0 <= 0); 6621#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6620#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6619#L12 assume !(main_~i~0 >= 10); 6618#L12-2 assume !(main_~i~0 <= 0); 6617#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6616#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6615#L12 assume !(main_~i~0 >= 10); 6614#L12-2 assume !(main_~i~0 <= 0); 6613#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6612#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6611#L12 assume !(main_~i~0 >= 10); 6610#L12-2 assume !(main_~i~0 <= 0); 6609#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6608#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6607#L12 assume !(main_~i~0 >= 10); 6606#L12-2 assume !(main_~i~0 <= 0); 6605#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6604#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6603#L12 assume !(main_~i~0 >= 10); 6602#L12-2 assume !(main_~i~0 <= 0); 6601#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6600#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6594#L12 assume !(main_~i~0 >= 10); 6598#L12-2 assume !(main_~i~0 <= 0); 6596#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6593#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6547#L12 assume !(main_~i~0 >= 10); 6548#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 6628#L15-1 [2021-10-11 00:29:00,845 INFO L796 eck$LassoCheckResult]: Loop: 6628#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 6690#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6688#L12 assume !(main_~i~0 >= 10); 6629#L12-2 assume !(main_~i~0 <= 0); 6554#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 6552#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6545#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 6546#L12-2 assume !(main_~i~0 <= 0); 6695#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6488#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6489#L12 assume !(main_~i~0 >= 10); 6482#L12-2 assume !(main_~i~0 <= 0); 6483#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6496#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6694#L12 assume !(main_~i~0 >= 10); 6693#L12-2 assume !(main_~i~0 <= 0); 6692#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6691#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6689#L12 assume !(main_~i~0 >= 10); 6687#L12-2 assume !(main_~i~0 <= 0); 6686#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6684#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6682#L12 assume !(main_~i~0 >= 10); 6680#L12-2 assume !(main_~i~0 <= 0); 6678#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6676#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6674#L12 assume !(main_~i~0 >= 10); 6672#L12-2 assume !(main_~i~0 <= 0); 6670#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6668#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6666#L12 assume !(main_~i~0 >= 10); 6664#L12-2 assume !(main_~i~0 <= 0); 6662#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6660#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6658#L12 assume !(main_~i~0 >= 10); 6656#L12-2 assume !(main_~i~0 <= 0); 6654#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6652#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6650#L12 assume !(main_~i~0 >= 10); 6648#L12-2 assume !(main_~i~0 <= 0); 6646#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6644#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6642#L12 assume !(main_~i~0 >= 10); 6640#L12-2 assume !(main_~i~0 <= 0); 6637#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6634#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6631#L12 assume !(main_~i~0 >= 10); 6632#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 6628#L15-1 [2021-10-11 00:29:00,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:00,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1244253986, now seen corresponding path program 2 times [2021-10-11 00:29:00,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:00,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626466386] [2021-10-11 00:29:00,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:00,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:29:00,853 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:29:00,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:29:00,859 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:29:00,862 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:29:00,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:00,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1107487295, now seen corresponding path program 10 times [2021-10-11 00:29:00,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:00,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447364205] [2021-10-11 00:29:00,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:00,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:29:00,870 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:29:00,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:29:00,877 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:29:00,879 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:29:00,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:00,880 INFO L82 PathProgramCache]: Analyzing trace with hash -429277470, now seen corresponding path program 9 times [2021-10-11 00:29:00,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:00,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970822259] [2021-10-11 00:29:00,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:00,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:00,935 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 587 proven. 3 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-11 00:29:00,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970822259] [2021-10-11 00:29:00,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381053867] [2021-10-11 00:29:00,936 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:29:00,994 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2021-10-11 00:29:00,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:29:00,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 00:29:00,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:29:01,068 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 587 proven. 3 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-11 00:29:01,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:29:01,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-10-11 00:29:01,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37279989] [2021-10-11 00:29:01,358 WARN L197 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 52 [2021-10-11 00:29:01,382 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:29:01,382 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:29:01,383 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:29:01,383 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:29:01,383 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-11 00:29:01,383 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:01,383 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:29:01,383 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:29:01,383 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration19_Loop [2021-10-11 00:29:01,383 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:29:01,384 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:29:01,385 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:01,389 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:01,392 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:01,398 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:01,464 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:29:01,464 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 77 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:29:01,467 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:29:01,467 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 77 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:01,483 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-11 00:29:01,483 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_15=1} Honda state: {v_rep~unnamed0~0~true_15=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 78 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:29:01,516 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:29:01,516 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 78 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:01,527 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-11 00:29:01,527 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_15=0} Honda state: {v_rep~unnamed0~0~false_15=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 79 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:29:01,563 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:29:01,563 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 79 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:01,574 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-11 00:29:01,574 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=1} Honda state: {ULTIMATE.start_main_~up~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 80 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:29:01,608 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:29:01,609 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 80 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 81 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:29:01,665 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-11 00:29:01,665 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 81 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:01,678 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-11 00:29:01,709 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:29:01,709 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:29:01,710 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:29:01,710 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:29:01,710 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-11 00:29:01,710 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:01,710 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:29:01,710 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:29:01,710 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration19_Loop [2021-10-11 00:29:01,710 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:29:01,710 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:29:01,711 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:01,715 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:01,721 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:01,731 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:01,789 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:29:01,789 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 82 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:01,791 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2021-10-11 00:29:01,793 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:29:01,793 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:29:01,793 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:29:01,793 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:29:01,799 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-11 00:29:01,799 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-11 00:29:01,802 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 83 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:01,825 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2021-10-11 00:29:01,827 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:29:01,827 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-11 00:29:01,827 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:29:01,827 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:29:01,827 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:29:01,828 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-11 00:29:01,828 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-11 00:29:01,829 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 84 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:01,850 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2021-10-11 00:29:01,851 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:29:01,851 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-11 00:29:01,851 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:29:01,851 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:29:01,851 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:29:01,852 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-11 00:29:01,852 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-11 00:29:01,872 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-11 00:29:01,874 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-11 00:29:01,874 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 85 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:01,878 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-11 00:29:01,878 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-11 00:29:01,878 INFO L510 LassoAnalysis]: Proved termination. [2021-10-11 00:29:01,878 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-11 00:29:01,897 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-11 00:29:01,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:01,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:01,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 00:29:01,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:29:01,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:01,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 00:29:01,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:29:02,063 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-11 00:29:02,063 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2021-10-11 00:29:02,064 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 214 states and 258 transitions. cyclomatic complexity: 49 Second operand 5 states. [2021-10-11 00:29:02,192 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 214 states and 258 transitions. cyclomatic complexity: 49. Second operand 5 states. Result 493 states and 601 transitions. Complement of second has 15 states. [2021-10-11 00:29:02,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 1 stem states 6 non-accepting loop states 1 accepting loop states [2021-10-11 00:29:02,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-11 00:29:02,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 36 transitions. [2021-10-11 00:29:02,193 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 36 transitions. Stem has 44 letters. Loop has 48 letters. [2021-10-11 00:29:02,196 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:29:02,196 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 36 transitions. Stem has 92 letters. Loop has 48 letters. [2021-10-11 00:29:02,198 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:29:02,198 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 36 transitions. Stem has 44 letters. Loop has 96 letters. [2021-10-11 00:29:02,199 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:29:02,199 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 493 states and 601 transitions. [2021-10-11 00:29:02,207 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 84 [2021-10-11 00:29:02,211 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 493 states to 439 states and 521 transitions. [2021-10-11 00:29:02,211 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 178 [2021-10-11 00:29:02,212 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 183 [2021-10-11 00:29:02,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 439 states and 521 transitions. [2021-10-11 00:29:02,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-11 00:29:02,213 INFO L692 BuchiCegarLoop]: Abstraction has 439 states and 521 transitions. [2021-10-11 00:29:02,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states and 521 transitions. [2021-10-11 00:29:02,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 427. [2021-10-11 00:29:02,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2021-10-11 00:29:02,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 508 transitions. [2021-10-11 00:29:02,222 INFO L715 BuchiCegarLoop]: Abstraction has 427 states and 508 transitions. [2021-10-11 00:29:02,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:29:02,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:29:02,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:29:02,223 INFO L87 Difference]: Start difference. First operand 427 states and 508 transitions. Second operand 5 states. [2021-10-11 00:29:02,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:02,250 INFO L93 Difference]: Finished difference Result 236 states and 278 transitions. [2021-10-11 00:29:02,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 00:29:02,251 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 236 states and 278 transitions. [2021-10-11 00:29:02,253 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2021-10-11 00:29:02,255 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 236 states to 221 states and 263 transitions. [2021-10-11 00:29:02,255 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 135 [2021-10-11 00:29:02,255 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 135 [2021-10-11 00:29:02,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 221 states and 263 transitions. [2021-10-11 00:29:02,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-11 00:29:02,256 INFO L692 BuchiCegarLoop]: Abstraction has 221 states and 263 transitions. [2021-10-11 00:29:02,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states and 263 transitions. [2021-10-11 00:29:02,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 214. [2021-10-11 00:29:02,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2021-10-11 00:29:02,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 256 transitions. [2021-10-11 00:29:02,262 INFO L715 BuchiCegarLoop]: Abstraction has 214 states and 256 transitions. [2021-10-11 00:29:02,262 INFO L595 BuchiCegarLoop]: Abstraction has 214 states and 256 transitions. [2021-10-11 00:29:02,262 INFO L427 BuchiCegarLoop]: ======== Iteration 20============ [2021-10-11 00:29:02,262 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 214 states and 256 transitions. [2021-10-11 00:29:02,264 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 80 [2021-10-11 00:29:02,264 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:29:02,264 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:29:02,265 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 10, 1, 1, 1] [2021-10-11 00:29:02,265 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [13, 12, 12, 10, 3, 1, 1] [2021-10-11 00:29:02,265 INFO L794 eck$LassoCheckResult]: Stem: 8449#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 8450#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8462#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 8516#L12-2 assume !(main_~i~0 <= 0); 8515#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8514#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8512#L12 assume !(main_~i~0 >= 10); 8513#L12-2 assume !(main_~i~0 <= 0); 8595#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8594#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8457#L12 assume !(main_~i~0 >= 10); 8458#L12-2 assume !(main_~i~0 <= 0); 8522#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8520#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8521#L12 assume !(main_~i~0 >= 10); 8593#L12-2 assume !(main_~i~0 <= 0); 8592#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8591#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8590#L12 assume !(main_~i~0 >= 10); 8589#L12-2 assume !(main_~i~0 <= 0); 8588#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8587#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8586#L12 assume !(main_~i~0 >= 10); 8585#L12-2 assume !(main_~i~0 <= 0); 8584#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8583#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8582#L12 assume !(main_~i~0 >= 10); 8581#L12-2 assume !(main_~i~0 <= 0); 8580#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8579#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8578#L12 assume !(main_~i~0 >= 10); 8577#L12-2 assume !(main_~i~0 <= 0); 8576#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8575#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8574#L12 assume !(main_~i~0 >= 10); 8573#L12-2 assume !(main_~i~0 <= 0); 8572#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8571#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8568#L12 assume !(main_~i~0 >= 10); 8570#L12-2 assume !(main_~i~0 <= 0); 8569#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8567#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8455#L12 assume !(main_~i~0 >= 10); 8456#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 8596#L15-1 [2021-10-11 00:29:02,266 INFO L796 eck$LassoCheckResult]: Loop: 8596#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 8565#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8566#L12 assume !(main_~i~0 >= 10); 8445#L12-2 assume !(main_~i~0 <= 0); 8446#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 8451#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8452#L12 assume !(main_~i~0 >= 10); 8531#L12-2 assume !(main_~i~0 <= 0); 8529#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 8528#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8525#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 8526#L12-2 assume !(main_~i~0 <= 0); 8459#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8460#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8527#L12 assume !(main_~i~0 >= 10); 8523#L12-2 assume !(main_~i~0 <= 0); 8524#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8631#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8630#L12 assume !(main_~i~0 >= 10); 8629#L12-2 assume !(main_~i~0 <= 0); 8628#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8627#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8626#L12 assume !(main_~i~0 >= 10); 8625#L12-2 assume !(main_~i~0 <= 0); 8624#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8623#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8622#L12 assume !(main_~i~0 >= 10); 8621#L12-2 assume !(main_~i~0 <= 0); 8620#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8619#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8618#L12 assume !(main_~i~0 >= 10); 8617#L12-2 assume !(main_~i~0 <= 0); 8616#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8615#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8614#L12 assume !(main_~i~0 >= 10); 8613#L12-2 assume !(main_~i~0 <= 0); 8612#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8611#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8610#L12 assume !(main_~i~0 >= 10); 8609#L12-2 assume !(main_~i~0 <= 0); 8608#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8607#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8606#L12 assume !(main_~i~0 >= 10); 8605#L12-2 assume !(main_~i~0 <= 0); 8604#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8603#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8602#L12 assume !(main_~i~0 >= 10); 8601#L12-2 assume !(main_~i~0 <= 0); 8598#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8600#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8599#L12 assume !(main_~i~0 >= 10); 8597#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 8596#L15-1 [2021-10-11 00:29:02,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:02,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1244253986, now seen corresponding path program 3 times [2021-10-11 00:29:02,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:02,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072439323] [2021-10-11 00:29:02,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:02,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:29:02,278 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:29:02,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:29:02,283 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:29:02,287 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:29:02,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:02,288 INFO L82 PathProgramCache]: Analyzing trace with hash -2004957192, now seen corresponding path program 11 times [2021-10-11 00:29:02,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:02,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050893098] [2021-10-11 00:29:02,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:02,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:29:02,296 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:29:02,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:29:02,302 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:29:02,309 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:29:02,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:02,309 INFO L82 PathProgramCache]: Analyzing trace with hash -364906343, now seen corresponding path program 10 times [2021-10-11 00:29:02,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:02,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825543739] [2021-10-11 00:29:02,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:02,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:02,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 671 proven. 10 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-11 00:29:02,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825543739] [2021-10-11 00:29:02,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688003073] [2021-10-11 00:29:02,426 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:29:02,502 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-11 00:29:02,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:29:02,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 00:29:02,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:29:02,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 671 proven. 10 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-11 00:29:02,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:29:02,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-11 00:29:02,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694606410] [2021-10-11 00:29:02,963 WARN L197 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 53 [2021-10-11 00:29:02,980 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:29:02,980 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:29:02,981 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:29:02,981 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:29:02,981 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-11 00:29:02,981 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:02,981 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:29:02,981 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:29:02,981 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration20_Loop [2021-10-11 00:29:02,981 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:29:02,982 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:29:02,982 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:02,986 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:02,996 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:03,003 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:03,085 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:29:03,085 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 87 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:29:03,089 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:29:03,089 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 87 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:03,107 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-11 00:29:03,107 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_17=1} Honda state: {v_rep~unnamed0~0~true_17=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 88 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:29:03,156 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:29:03,157 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 88 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 89 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:03,203 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-11 00:29:03,203 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-11 00:29:03,206 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-11 00:29:03,226 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:29:03,226 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:29:03,226 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:29:03,226 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:29:03,226 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-11 00:29:03,226 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:03,226 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:29:03,226 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:29:03,226 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration20_Loop [2021-10-11 00:29:03,226 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:29:03,226 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:29:03,227 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:03,235 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:03,238 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:03,241 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:03,299 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:29:03,299 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 90 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:03,301 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2021-10-11 00:29:03,302 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:29:03,302 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-11 00:29:03,302 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:29:03,302 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:29:03,302 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:29:03,303 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-11 00:29:03,303 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-11 00:29:03,305 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-11 00:29:03,311 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-11 00:29:03,312 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 91 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:03,314 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-11 00:29:03,314 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-11 00:29:03,314 INFO L510 LassoAnalysis]: Proved termination. [2021-10-11 00:29:03,314 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-11 00:29:03,333 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-11 00:29:03,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:03,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:03,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 00:29:03,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:29:03,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:03,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-11 00:29:03,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:29:03,498 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 122 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-11 00:29:03,499 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2021-10-11 00:29:03,499 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 214 states and 256 transitions. cyclomatic complexity: 47 Second operand 6 states. [2021-10-11 00:29:03,718 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 214 states and 256 transitions. cyclomatic complexity: 47. Second operand 6 states. Result 565 states and 685 transitions. Complement of second has 19 states. [2021-10-11 00:29:03,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 1 stem states 8 non-accepting loop states 1 accepting loop states [2021-10-11 00:29:03,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-11 00:29:03,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 45 transitions. [2021-10-11 00:29:03,719 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 45 transitions. Stem has 44 letters. Loop has 52 letters. [2021-10-11 00:29:03,720 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:29:03,720 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 45 transitions. Stem has 96 letters. Loop has 52 letters. [2021-10-11 00:29:03,721 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:29:03,721 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 45 transitions. Stem has 44 letters. Loop has 104 letters. [2021-10-11 00:29:03,722 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:29:03,722 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 565 states and 685 transitions. [2021-10-11 00:29:03,727 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 84 [2021-10-11 00:29:03,733 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 565 states to 483 states and 571 transitions. [2021-10-11 00:29:03,734 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 182 [2021-10-11 00:29:03,734 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 188 [2021-10-11 00:29:03,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 483 states and 571 transitions. [2021-10-11 00:29:03,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-11 00:29:03,735 INFO L692 BuchiCegarLoop]: Abstraction has 483 states and 571 transitions. [2021-10-11 00:29:03,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states and 571 transitions. [2021-10-11 00:29:03,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 469. [2021-10-11 00:29:03,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 469 states. [2021-10-11 00:29:03,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 556 transitions. [2021-10-11 00:29:03,745 INFO L715 BuchiCegarLoop]: Abstraction has 469 states and 556 transitions. [2021-10-11 00:29:03,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:29:03,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 00:29:03,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:29:03,746 INFO L87 Difference]: Start difference. First operand 469 states and 556 transitions. Second operand 6 states. [2021-10-11 00:29:03,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:03,790 INFO L93 Difference]: Finished difference Result 248 states and 288 transitions. [2021-10-11 00:29:03,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 00:29:03,791 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 248 states and 288 transitions. [2021-10-11 00:29:03,793 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2021-10-11 00:29:03,794 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 248 states to 225 states and 265 transitions. [2021-10-11 00:29:03,794 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 139 [2021-10-11 00:29:03,795 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 139 [2021-10-11 00:29:03,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 225 states and 265 transitions. [2021-10-11 00:29:03,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-11 00:29:03,795 INFO L692 BuchiCegarLoop]: Abstraction has 225 states and 265 transitions. [2021-10-11 00:29:03,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states and 265 transitions. [2021-10-11 00:29:03,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 214. [2021-10-11 00:29:03,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2021-10-11 00:29:03,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 254 transitions. [2021-10-11 00:29:03,800 INFO L715 BuchiCegarLoop]: Abstraction has 214 states and 254 transitions. [2021-10-11 00:29:03,800 INFO L595 BuchiCegarLoop]: Abstraction has 214 states and 254 transitions. [2021-10-11 00:29:03,800 INFO L427 BuchiCegarLoop]: ======== Iteration 21============ [2021-10-11 00:29:03,801 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 214 states and 254 transitions. [2021-10-11 00:29:03,802 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 80 [2021-10-11 00:29:03,802 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:29:03,802 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:29:03,811 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 10, 1, 1, 1] [2021-10-11 00:29:03,811 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [14, 13, 13, 10, 4, 1, 1] [2021-10-11 00:29:03,811 INFO L794 eck$LassoCheckResult]: Stem: 10571#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 10572#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10584#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 10637#L12-2 assume !(main_~i~0 <= 0); 10636#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10635#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10633#L12 assume !(main_~i~0 >= 10); 10634#L12-2 assume !(main_~i~0 <= 0); 10675#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10674#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10578#L12 assume !(main_~i~0 >= 10); 10579#L12-2 assume !(main_~i~0 <= 0); 10643#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10641#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10642#L12 assume !(main_~i~0 >= 10); 10673#L12-2 assume !(main_~i~0 <= 0); 10672#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10671#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10670#L12 assume !(main_~i~0 >= 10); 10669#L12-2 assume !(main_~i~0 <= 0); 10668#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10667#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10666#L12 assume !(main_~i~0 >= 10); 10665#L12-2 assume !(main_~i~0 <= 0); 10664#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10663#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10662#L12 assume !(main_~i~0 >= 10); 10661#L12-2 assume !(main_~i~0 <= 0); 10660#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10659#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10658#L12 assume !(main_~i~0 >= 10); 10657#L12-2 assume !(main_~i~0 <= 0); 10656#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10655#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10654#L12 assume !(main_~i~0 >= 10); 10653#L12-2 assume !(main_~i~0 <= 0); 10652#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10651#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10647#L12 assume !(main_~i~0 >= 10); 10650#L12-2 assume !(main_~i~0 <= 0); 10649#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10646#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10648#L12 assume !(main_~i~0 >= 10); 10688#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 10689#L15-1 [2021-10-11 00:29:03,812 INFO L796 eck$LassoCheckResult]: Loop: 10689#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 10684#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10685#L12 assume !(main_~i~0 >= 10); 10692#L12-2 assume !(main_~i~0 <= 0); 10686#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 10687#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10577#L12 assume !(main_~i~0 >= 10); 10567#L12-2 assume !(main_~i~0 <= 0); 10568#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 10780#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10779#L12 assume !(main_~i~0 >= 10); 10759#L12-2 assume !(main_~i~0 <= 0); 10680#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 10679#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10677#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 10678#L12-2 assume !(main_~i~0 <= 0); 10725#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10573#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10574#L12 assume !(main_~i~0 >= 10); 10676#L12-2 assume !(main_~i~0 <= 0); 10580#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10581#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10724#L12 assume !(main_~i~0 >= 10); 10723#L12-2 assume !(main_~i~0 <= 0); 10722#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10721#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10720#L12 assume !(main_~i~0 >= 10); 10719#L12-2 assume !(main_~i~0 <= 0); 10718#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10717#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10716#L12 assume !(main_~i~0 >= 10); 10715#L12-2 assume !(main_~i~0 <= 0); 10714#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10713#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10712#L12 assume !(main_~i~0 >= 10); 10711#L12-2 assume !(main_~i~0 <= 0); 10710#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10709#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10708#L12 assume !(main_~i~0 >= 10); 10707#L12-2 assume !(main_~i~0 <= 0); 10706#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10705#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10704#L12 assume !(main_~i~0 >= 10); 10703#L12-2 assume !(main_~i~0 <= 0); 10702#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10701#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10700#L12 assume !(main_~i~0 >= 10); 10699#L12-2 assume !(main_~i~0 <= 0); 10698#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10697#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10696#L12 assume !(main_~i~0 >= 10); 10695#L12-2 assume !(main_~i~0 <= 0); 10691#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10694#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10693#L12 assume !(main_~i~0 >= 10); 10690#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 10689#L15-1 [2021-10-11 00:29:03,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:03,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1244253986, now seen corresponding path program 4 times [2021-10-11 00:29:03,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:03,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147757861] [2021-10-11 00:29:03,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:03,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:29:03,823 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:29:03,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:29:03,828 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:29:03,831 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:29:03,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:03,831 INFO L82 PathProgramCache]: Analyzing trace with hash -102857041, now seen corresponding path program 12 times [2021-10-11 00:29:03,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:03,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829630569] [2021-10-11 00:29:03,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:03,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:29:03,838 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:29:03,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:29:03,844 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:29:03,846 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:29:03,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:03,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1080327888, now seen corresponding path program 11 times [2021-10-11 00:29:03,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:03,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532463105] [2021-10-11 00:29:03,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:03,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:03,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 755 proven. 21 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-11 00:29:03,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532463105] [2021-10-11 00:29:03,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947942881] [2021-10-11 00:29:03,918 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:29:03,977 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-10-11 00:29:03,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:29:03,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 00:29:03,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:29:04,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 755 proven. 21 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-11 00:29:04,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:29:04,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-10-11 00:29:04,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39395243] [2021-10-11 00:29:04,457 WARN L197 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 57 [2021-10-11 00:29:04,475 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:29:04,476 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:29:04,476 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:29:04,476 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:29:04,476 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-11 00:29:04,476 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:04,476 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:29:04,476 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:29:04,476 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration21_Loop [2021-10-11 00:29:04,476 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:29:04,476 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:29:04,477 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:04,485 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:04,491 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:04,494 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:04,552 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:29:04,553 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 93 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:04,555 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:29:04,555 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 94 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:04,579 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-11 00:29:04,579 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-11 00:29:04,607 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-11 00:29:04,608 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:29:04,608 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:29:04,609 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:29:04,609 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:29:04,609 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-11 00:29:04,609 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:04,609 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:29:04,609 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:29:04,609 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration21_Loop [2021-10-11 00:29:04,609 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:29:04,609 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:29:04,610 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:04,619 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:04,623 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:04,628 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:04,677 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:29:04,677 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 95 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:04,679 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2021-10-11 00:29:04,680 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:29:04,681 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-11 00:29:04,681 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:29:04,681 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:29:04,681 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:29:04,682 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-11 00:29:04,682 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-11 00:29:04,686 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-11 00:29:04,691 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-11 00:29:04,691 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 96 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:04,693 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-11 00:29:04,693 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-11 00:29:04,693 INFO L510 LassoAnalysis]: Proved termination. [2021-10-11 00:29:04,693 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-11 00:29:04,713 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-11 00:29:04,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:04,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:04,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 00:29:04,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:29:04,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:04,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-11 00:29:04,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:29:04,937 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-11 00:29:04,938 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 6 loop predicates [2021-10-11 00:29:04,938 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 214 states and 254 transitions. cyclomatic complexity: 45 Second operand 7 states. [2021-10-11 00:29:05,205 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 214 states and 254 transitions. cyclomatic complexity: 45. Second operand 7 states. Result 653 states and 789 transitions. Complement of second has 23 states. [2021-10-11 00:29:05,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 1 stem states 10 non-accepting loop states 1 accepting loop states [2021-10-11 00:29:05,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-11 00:29:05,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 54 transitions. [2021-10-11 00:29:05,206 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 54 transitions. Stem has 44 letters. Loop has 56 letters. [2021-10-11 00:29:05,207 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:29:05,207 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 54 transitions. Stem has 100 letters. Loop has 56 letters. [2021-10-11 00:29:05,208 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:29:05,208 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 54 transitions. Stem has 44 letters. Loop has 112 letters. [2021-10-11 00:29:05,209 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:29:05,209 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 653 states and 789 transitions. [2021-10-11 00:29:05,214 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 84 [2021-10-11 00:29:05,218 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 653 states to 535 states and 631 transitions. [2021-10-11 00:29:05,218 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 186 [2021-10-11 00:29:05,219 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 193 [2021-10-11 00:29:05,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 535 states and 631 transitions. [2021-10-11 00:29:05,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-11 00:29:05,219 INFO L692 BuchiCegarLoop]: Abstraction has 535 states and 631 transitions. [2021-10-11 00:29:05,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states and 631 transitions. [2021-10-11 00:29:05,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 519. [2021-10-11 00:29:05,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 519 states. [2021-10-11 00:29:05,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 614 transitions. [2021-10-11 00:29:05,229 INFO L715 BuchiCegarLoop]: Abstraction has 519 states and 614 transitions. [2021-10-11 00:29:05,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:29:05,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 00:29:05,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-11 00:29:05,230 INFO L87 Difference]: Start difference. First operand 519 states and 614 transitions. Second operand 7 states. [2021-10-11 00:29:05,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:05,281 INFO L93 Difference]: Finished difference Result 260 states and 298 transitions. [2021-10-11 00:29:05,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 00:29:05,283 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 260 states and 298 transitions. [2021-10-11 00:29:05,285 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2021-10-11 00:29:05,287 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 260 states to 229 states and 267 transitions. [2021-10-11 00:29:05,287 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 143 [2021-10-11 00:29:05,287 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 143 [2021-10-11 00:29:05,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 229 states and 267 transitions. [2021-10-11 00:29:05,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-11 00:29:05,288 INFO L692 BuchiCegarLoop]: Abstraction has 229 states and 267 transitions. [2021-10-11 00:29:05,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states and 267 transitions. [2021-10-11 00:29:05,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 214. [2021-10-11 00:29:05,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2021-10-11 00:29:05,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 252 transitions. [2021-10-11 00:29:05,293 INFO L715 BuchiCegarLoop]: Abstraction has 214 states and 252 transitions. [2021-10-11 00:29:05,293 INFO L595 BuchiCegarLoop]: Abstraction has 214 states and 252 transitions. [2021-10-11 00:29:05,293 INFO L427 BuchiCegarLoop]: ======== Iteration 22============ [2021-10-11 00:29:05,293 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 214 states and 252 transitions. [2021-10-11 00:29:05,295 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 80 [2021-10-11 00:29:05,295 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:29:05,295 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:29:05,296 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 10, 1, 1, 1] [2021-10-11 00:29:05,296 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [15, 14, 14, 10, 5, 1, 1] [2021-10-11 00:29:05,296 INFO L794 eck$LassoCheckResult]: Stem: 12876#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 12877#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 12888#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 12940#L12-2 assume !(main_~i~0 <= 0); 12939#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 12938#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 12936#L12 assume !(main_~i~0 >= 10); 12937#L12-2 assume !(main_~i~0 <= 0); 12946#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 12947#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 12883#L12 assume !(main_~i~0 >= 10); 12884#L12-2 assume !(main_~i~0 <= 0); 12948#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 12944#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 12945#L12 assume !(main_~i~0 >= 10); 13050#L12-2 assume !(main_~i~0 <= 0); 13049#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 13048#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13047#L12 assume !(main_~i~0 >= 10); 13046#L12-2 assume !(main_~i~0 <= 0); 13045#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 13044#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13043#L12 assume !(main_~i~0 >= 10); 13042#L12-2 assume !(main_~i~0 <= 0); 13041#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 13040#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13039#L12 assume !(main_~i~0 >= 10); 13038#L12-2 assume !(main_~i~0 <= 0); 13037#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 13036#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13035#L12 assume !(main_~i~0 >= 10); 13034#L12-2 assume !(main_~i~0 <= 0); 13033#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 13032#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13031#L12 assume !(main_~i~0 >= 10); 13030#L12-2 assume !(main_~i~0 <= 0); 13029#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 13028#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13024#L12 assume !(main_~i~0 >= 10); 13027#L12-2 assume !(main_~i~0 <= 0); 13026#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 13023#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 12882#L12 assume !(main_~i~0 >= 10); 12872#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 12873#L15-1 [2021-10-11 00:29:05,297 INFO L796 eck$LassoCheckResult]: Loop: 12873#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 12878#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 12879#L12 assume !(main_~i~0 >= 10); 12987#L12-2 assume !(main_~i~0 <= 0); 12986#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 12985#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 12984#L12 assume !(main_~i~0 >= 10); 12983#L12-2 assume !(main_~i~0 <= 0); 12982#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 12981#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 12980#L12 assume !(main_~i~0 >= 10); 12961#L12-2 assume !(main_~i~0 <= 0); 12960#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 12958#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 12959#L12 assume !(main_~i~0 >= 10); 12962#L12-2 assume !(main_~i~0 <= 0); 12954#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 12953#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 12950#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 12951#L12-2 assume !(main_~i~0 <= 0); 13025#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 13022#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 12952#L12 assume !(main_~i~0 >= 10); 12949#L12-2 assume !(main_~i~0 <= 0); 12885#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 12886#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13021#L12 assume !(main_~i~0 >= 10); 13020#L12-2 assume !(main_~i~0 <= 0); 13019#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 13018#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13017#L12 assume !(main_~i~0 >= 10); 13016#L12-2 assume !(main_~i~0 <= 0); 13015#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 13014#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13013#L12 assume !(main_~i~0 >= 10); 13012#L12-2 assume !(main_~i~0 <= 0); 13011#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 13010#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13009#L12 assume !(main_~i~0 >= 10); 13008#L12-2 assume !(main_~i~0 <= 0); 13007#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 13006#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13005#L12 assume !(main_~i~0 >= 10); 13004#L12-2 assume !(main_~i~0 <= 0); 13003#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 13002#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13001#L12 assume !(main_~i~0 >= 10); 13000#L12-2 assume !(main_~i~0 <= 0); 12999#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 12998#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 12997#L12 assume !(main_~i~0 >= 10); 12996#L12-2 assume !(main_~i~0 <= 0); 12995#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 12994#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 12993#L12 assume !(main_~i~0 >= 10); 12992#L12-2 assume !(main_~i~0 <= 0); 12989#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 12991#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 12990#L12 assume !(main_~i~0 >= 10); 12988#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 12873#L15-1 [2021-10-11 00:29:05,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:05,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1244253986, now seen corresponding path program 5 times [2021-10-11 00:29:05,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:05,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998860896] [2021-10-11 00:29:05,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:05,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:29:05,305 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:29:05,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:29:05,310 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:29:05,312 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:29:05,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:05,313 INFO L82 PathProgramCache]: Analyzing trace with hash 591532518, now seen corresponding path program 13 times [2021-10-11 00:29:05,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:05,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733651240] [2021-10-11 00:29:05,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:05,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:29:05,320 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:29:05,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:29:05,326 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:29:05,329 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:29:05,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:05,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1205670279, now seen corresponding path program 12 times [2021-10-11 00:29:05,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:05,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846388457] [2021-10-11 00:29:05,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:05,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:05,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 839 proven. 36 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-11 00:29:05,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846388457] [2021-10-11 00:29:05,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027875080] [2021-10-11 00:29:05,401 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:29:05,467 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 26 check-sat command(s) [2021-10-11 00:29:05,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:29:05,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-11 00:29:05,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:29:05,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 839 proven. 36 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-11 00:29:05,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:29:05,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-10-11 00:29:05,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446392073] [2021-10-11 00:29:06,065 WARN L197 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 60 [2021-10-11 00:29:06,078 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:29:06,079 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:29:06,079 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:29:06,079 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:29:06,079 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-11 00:29:06,079 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:06,079 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:29:06,079 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:29:06,079 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration22_Loop [2021-10-11 00:29:06,079 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:29:06,079 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:29:06,080 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:06,082 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:06,090 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:06,095 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:06,158 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:29:06,159 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 98 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:06,161 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:29:06,161 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-11 00:29:06,163 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-11 00:29:06,163 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_21=0} Honda state: {v_rep~unnamed0~0~false_21=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 99 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:06,184 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:29:06,184 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 100 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:06,207 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-11 00:29:06,207 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-11 00:29:06,210 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-11 00:29:06,232 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:29:06,232 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:29:06,232 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:29:06,232 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:29:06,232 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-11 00:29:06,232 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:06,233 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:29:06,233 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:29:06,233 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration22_Loop [2021-10-11 00:29:06,233 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:29:06,233 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:29:06,233 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:06,236 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:06,240 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:06,248 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:06,293 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:29:06,293 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 101 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:06,295 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2021-10-11 00:29:06,296 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:29:06,297 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:29:06,297 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:29:06,297 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:29:06,299 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-11 00:29:06,300 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-11 00:29:06,309 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 102 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:06,329 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2021-10-11 00:29:06,331 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:29:06,331 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:29:06,331 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:29:06,331 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:29:06,332 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-11 00:29:06,332 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-11 00:29:06,335 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 103 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:06,357 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2021-10-11 00:29:06,358 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:29:06,358 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-11 00:29:06,358 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:29:06,358 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:29:06,358 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:29:06,359 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-11 00:29:06,359 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-11 00:29:06,361 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-11 00:29:06,364 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-11 00:29:06,365 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 104 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:06,367 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-11 00:29:06,367 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-11 00:29:06,367 INFO L510 LassoAnalysis]: Proved termination. [2021-10-11 00:29:06,367 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-11 00:29:06,387 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-11 00:29:06,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:06,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:06,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 00:29:06,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:29:06,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:06,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-11 00:29:06,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:29:06,641 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 230 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-11 00:29:06,642 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 7 loop predicates [2021-10-11 00:29:06,642 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 214 states and 252 transitions. cyclomatic complexity: 43 Second operand 8 states. [2021-10-11 00:29:06,987 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 214 states and 252 transitions. cyclomatic complexity: 43. Second operand 8 states. Result 757 states and 913 transitions. Complement of second has 27 states. [2021-10-11 00:29:06,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 14 states 1 stem states 12 non-accepting loop states 1 accepting loop states [2021-10-11 00:29:06,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-11 00:29:06,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 63 transitions. [2021-10-11 00:29:06,989 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 63 transitions. Stem has 44 letters. Loop has 60 letters. [2021-10-11 00:29:06,990 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:29:06,990 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 63 transitions. Stem has 104 letters. Loop has 60 letters. [2021-10-11 00:29:06,991 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:29:06,991 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 63 transitions. Stem has 44 letters. Loop has 120 letters. [2021-10-11 00:29:06,992 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:29:06,992 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 757 states and 913 transitions. [2021-10-11 00:29:06,997 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 84 [2021-10-11 00:29:07,002 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 757 states to 595 states and 701 transitions. [2021-10-11 00:29:07,002 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 190 [2021-10-11 00:29:07,002 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 198 [2021-10-11 00:29:07,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 595 states and 701 transitions. [2021-10-11 00:29:07,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-11 00:29:07,006 INFO L692 BuchiCegarLoop]: Abstraction has 595 states and 701 transitions. [2021-10-11 00:29:07,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states and 701 transitions. [2021-10-11 00:29:07,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 577. [2021-10-11 00:29:07,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 577 states. [2021-10-11 00:29:07,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 682 transitions. [2021-10-11 00:29:07,018 INFO L715 BuchiCegarLoop]: Abstraction has 577 states and 682 transitions. [2021-10-11 00:29:07,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:29:07,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 00:29:07,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-11 00:29:07,019 INFO L87 Difference]: Start difference. First operand 577 states and 682 transitions. Second operand 8 states. [2021-10-11 00:29:07,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:07,077 INFO L93 Difference]: Finished difference Result 272 states and 308 transitions. [2021-10-11 00:29:07,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 00:29:07,077 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 272 states and 308 transitions. [2021-10-11 00:29:07,079 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2021-10-11 00:29:07,080 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 272 states to 233 states and 269 transitions. [2021-10-11 00:29:07,080 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 147 [2021-10-11 00:29:07,080 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 147 [2021-10-11 00:29:07,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 233 states and 269 transitions. [2021-10-11 00:29:07,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-11 00:29:07,081 INFO L692 BuchiCegarLoop]: Abstraction has 233 states and 269 transitions. [2021-10-11 00:29:07,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states and 269 transitions. [2021-10-11 00:29:07,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 214. [2021-10-11 00:29:07,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2021-10-11 00:29:07,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 250 transitions. [2021-10-11 00:29:07,085 INFO L715 BuchiCegarLoop]: Abstraction has 214 states and 250 transitions. [2021-10-11 00:29:07,085 INFO L595 BuchiCegarLoop]: Abstraction has 214 states and 250 transitions. [2021-10-11 00:29:07,085 INFO L427 BuchiCegarLoop]: ======== Iteration 23============ [2021-10-11 00:29:07,085 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 214 states and 250 transitions. [2021-10-11 00:29:07,087 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 80 [2021-10-11 00:29:07,087 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:29:07,087 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:29:07,088 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 10, 1, 1, 1] [2021-10-11 00:29:07,088 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [16, 15, 15, 10, 6, 1, 1] [2021-10-11 00:29:07,088 INFO L794 eck$LassoCheckResult]: Stem: 15388#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 15389#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15400#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 15453#L12-2 assume !(main_~i~0 <= 0); 15452#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15451#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15449#L12 assume !(main_~i~0 >= 10); 15450#L12-2 assume !(main_~i~0 <= 0); 15566#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15564#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15395#L12 assume !(main_~i~0 >= 10); 15396#L12-2 assume !(main_~i~0 <= 0); 15459#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15457#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15458#L12 assume !(main_~i~0 >= 10); 15561#L12-2 assume !(main_~i~0 <= 0); 15559#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15557#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15555#L12 assume !(main_~i~0 >= 10); 15553#L12-2 assume !(main_~i~0 <= 0); 15551#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15549#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15547#L12 assume !(main_~i~0 >= 10); 15545#L12-2 assume !(main_~i~0 <= 0); 15543#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15541#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15539#L12 assume !(main_~i~0 >= 10); 15537#L12-2 assume !(main_~i~0 <= 0); 15535#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15533#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15531#L12 assume !(main_~i~0 >= 10); 15529#L12-2 assume !(main_~i~0 <= 0); 15527#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15525#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15523#L12 assume !(main_~i~0 >= 10); 15521#L12-2 assume !(main_~i~0 <= 0); 15519#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15517#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15508#L12 assume !(main_~i~0 >= 10); 15514#L12-2 assume !(main_~i~0 <= 0); 15511#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15507#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15500#L12 assume !(main_~i~0 >= 10); 15384#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 15385#L15-1 [2021-10-11 00:29:07,089 INFO L796 eck$LassoCheckResult]: Loop: 15385#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 15390#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15391#L12 assume !(main_~i~0 >= 10); 15394#L12-2 assume !(main_~i~0 <= 0); 15497#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 15496#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15495#L12 assume !(main_~i~0 >= 10); 15494#L12-2 assume !(main_~i~0 <= 0); 15493#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 15492#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15491#L12 assume !(main_~i~0 >= 10); 15490#L12-2 assume !(main_~i~0 <= 0); 15489#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 15488#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15487#L12 assume !(main_~i~0 >= 10); 15472#L12-2 assume !(main_~i~0 <= 0); 15473#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 15469#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15467#L12 assume !(main_~i~0 >= 10); 15468#L12-2 assume !(main_~i~0 <= 0); 15465#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 15464#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15461#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 15462#L12-2 assume !(main_~i~0 <= 0); 15569#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15568#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15463#L12 assume !(main_~i~0 >= 10); 15460#L12-2 assume !(main_~i~0 <= 0); 15397#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15398#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15567#L12 assume !(main_~i~0 >= 10); 15565#L12-2 assume !(main_~i~0 <= 0); 15563#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15562#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15560#L12 assume !(main_~i~0 >= 10); 15558#L12-2 assume !(main_~i~0 <= 0); 15556#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15554#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15552#L12 assume !(main_~i~0 >= 10); 15550#L12-2 assume !(main_~i~0 <= 0); 15548#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15546#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15544#L12 assume !(main_~i~0 >= 10); 15542#L12-2 assume !(main_~i~0 <= 0); 15540#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15538#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15536#L12 assume !(main_~i~0 >= 10); 15534#L12-2 assume !(main_~i~0 <= 0); 15532#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15530#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15528#L12 assume !(main_~i~0 >= 10); 15526#L12-2 assume !(main_~i~0 <= 0); 15524#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15522#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15520#L12 assume !(main_~i~0 >= 10); 15518#L12-2 assume !(main_~i~0 <= 0); 15516#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15515#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15512#L12 assume !(main_~i~0 >= 10); 15509#L12-2 assume !(main_~i~0 <= 0); 15499#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15505#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15503#L12 assume !(main_~i~0 >= 10); 15498#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 15385#L15-1 [2021-10-11 00:29:07,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:07,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1244253986, now seen corresponding path program 6 times [2021-10-11 00:29:07,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:07,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231711822] [2021-10-11 00:29:07,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:07,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:29:07,096 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:29:07,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:29:07,101 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:29:07,103 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:29:07,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:07,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1930483299, now seen corresponding path program 14 times [2021-10-11 00:29:07,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:07,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570514889] [2021-10-11 00:29:07,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:07,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:29:07,110 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:29:07,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:29:07,117 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:29:07,119 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:29:07,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:07,120 INFO L82 PathProgramCache]: Analyzing trace with hash -422612802, now seen corresponding path program 13 times [2021-10-11 00:29:07,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:07,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806379366] [2021-10-11 00:29:07,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:07,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:07,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 923 proven. 55 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-11 00:29:07,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806379366] [2021-10-11 00:29:07,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501958376] [2021-10-11 00:29:07,203 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:29:07,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:07,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-11 00:29:07,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:29:07,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 923 proven. 55 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-11 00:29:07,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:29:07,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-10-11 00:29:07,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275064929] [2021-10-11 00:29:07,891 WARN L197 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 64 [2021-10-11 00:29:07,906 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:29:07,906 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:29:07,907 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:29:07,907 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:29:07,907 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-11 00:29:07,907 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:07,907 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:29:07,907 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:29:07,907 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration23_Loop [2021-10-11 00:29:07,907 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:29:07,907 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:29:07,907 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:07,910 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:07,918 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:07,923 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:07,967 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:29:07,967 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 106 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:07,969 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:29:07,969 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-11 00:29:07,972 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-11 00:29:07,972 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_23=1} Honda state: {v_rep~unnamed0~0~true_23=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 107 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:07,994 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:29:07,994 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 108 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:08,016 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-11 00:29:08,017 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-11 00:29:08,021 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-11 00:29:08,042 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:29:08,043 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:29:08,043 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:29:08,043 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:29:08,043 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-11 00:29:08,043 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:08,043 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:29:08,043 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:29:08,043 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration23_Loop [2021-10-11 00:29:08,043 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:29:08,043 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:29:08,044 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:08,046 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:08,055 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:08,060 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:08,130 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:29:08,131 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 109 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:08,133 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2021-10-11 00:29:08,134 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:29:08,134 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:29:08,135 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:29:08,135 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:29:08,136 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-11 00:29:08,137 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-11 00:29:08,141 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 110 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:08,162 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2021-10-11 00:29:08,163 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:29:08,164 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-11 00:29:08,164 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:29:08,164 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:29:08,164 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:29:08,165 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-11 00:29:08,165 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-11 00:29:08,170 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-11 00:29:08,173 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-11 00:29:08,173 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 111 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 111 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:08,175 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-11 00:29:08,175 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-11 00:29:08,175 INFO L510 LassoAnalysis]: Proved termination. [2021-10-11 00:29:08,175 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-11 00:29:08,195 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-11 00:29:08,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:08,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:08,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 00:29:08,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:29:08,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:08,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-11 00:29:08,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:29:08,426 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-11 00:29:08,427 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 8 loop predicates [2021-10-11 00:29:08,427 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 214 states and 250 transitions. cyclomatic complexity: 41 Second operand 9 states. [2021-10-11 00:29:08,863 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 214 states and 250 transitions. cyclomatic complexity: 41. Second operand 9 states. Result 877 states and 1057 transitions. Complement of second has 31 states. [2021-10-11 00:29:08,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 16 states 1 stem states 14 non-accepting loop states 1 accepting loop states [2021-10-11 00:29:08,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-11 00:29:08,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 72 transitions. [2021-10-11 00:29:08,865 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 72 transitions. Stem has 44 letters. Loop has 64 letters. [2021-10-11 00:29:08,866 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:29:08,866 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 72 transitions. Stem has 108 letters. Loop has 64 letters. [2021-10-11 00:29:08,867 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:29:08,867 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 72 transitions. Stem has 44 letters. Loop has 128 letters. [2021-10-11 00:29:08,868 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:29:08,868 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 877 states and 1057 transitions. [2021-10-11 00:29:08,875 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 84 [2021-10-11 00:29:08,880 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 877 states to 663 states and 781 transitions. [2021-10-11 00:29:08,880 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 194 [2021-10-11 00:29:08,881 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 203 [2021-10-11 00:29:08,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 663 states and 781 transitions. [2021-10-11 00:29:08,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-11 00:29:08,881 INFO L692 BuchiCegarLoop]: Abstraction has 663 states and 781 transitions. [2021-10-11 00:29:08,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states and 781 transitions. [2021-10-11 00:29:08,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 643. [2021-10-11 00:29:08,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2021-10-11 00:29:08,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 760 transitions. [2021-10-11 00:29:08,893 INFO L715 BuchiCegarLoop]: Abstraction has 643 states and 760 transitions. [2021-10-11 00:29:08,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:29:08,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-11 00:29:08,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-11 00:29:08,894 INFO L87 Difference]: Start difference. First operand 643 states and 760 transitions. Second operand 9 states. [2021-10-11 00:29:08,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:08,968 INFO L93 Difference]: Finished difference Result 284 states and 318 transitions. [2021-10-11 00:29:08,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-11 00:29:08,969 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 284 states and 318 transitions. [2021-10-11 00:29:08,971 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2021-10-11 00:29:08,972 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 284 states to 237 states and 271 transitions. [2021-10-11 00:29:08,973 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 151 [2021-10-11 00:29:08,973 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 151 [2021-10-11 00:29:08,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 237 states and 271 transitions. [2021-10-11 00:29:08,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-11 00:29:08,973 INFO L692 BuchiCegarLoop]: Abstraction has 237 states and 271 transitions. [2021-10-11 00:29:08,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states and 271 transitions. [2021-10-11 00:29:08,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 214. [2021-10-11 00:29:08,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2021-10-11 00:29:08,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 248 transitions. [2021-10-11 00:29:08,979 INFO L715 BuchiCegarLoop]: Abstraction has 214 states and 248 transitions. [2021-10-11 00:29:08,979 INFO L595 BuchiCegarLoop]: Abstraction has 214 states and 248 transitions. [2021-10-11 00:29:08,979 INFO L427 BuchiCegarLoop]: ======== Iteration 24============ [2021-10-11 00:29:08,979 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 214 states and 248 transitions. [2021-10-11 00:29:08,981 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 80 [2021-10-11 00:29:08,981 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:29:08,981 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:29:08,982 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 10, 1, 1, 1] [2021-10-11 00:29:08,982 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [17, 16, 16, 10, 7, 1, 1] [2021-10-11 00:29:08,982 INFO L794 eck$LassoCheckResult]: Stem: 18131#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 18132#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18142#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 18195#L12-2 assume !(main_~i~0 <= 0); 18194#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18193#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18191#L12 assume !(main_~i~0 >= 10); 18192#L12-2 assume !(main_~i~0 <= 0); 18201#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18202#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18138#L12 assume !(main_~i~0 >= 10); 18139#L12-2 assume !(main_~i~0 <= 0); 18203#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18199#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18200#L12 assume !(main_~i~0 >= 10); 18305#L12-2 assume !(main_~i~0 <= 0); 18304#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18303#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18302#L12 assume !(main_~i~0 >= 10); 18301#L12-2 assume !(main_~i~0 <= 0); 18300#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18299#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18298#L12 assume !(main_~i~0 >= 10); 18297#L12-2 assume !(main_~i~0 <= 0); 18296#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18295#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18294#L12 assume !(main_~i~0 >= 10); 18293#L12-2 assume !(main_~i~0 <= 0); 18292#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18291#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18290#L12 assume !(main_~i~0 >= 10); 18289#L12-2 assume !(main_~i~0 <= 0); 18288#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18287#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18286#L12 assume !(main_~i~0 >= 10); 18285#L12-2 assume !(main_~i~0 <= 0); 18284#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18283#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18279#L12 assume !(main_~i~0 >= 10); 18282#L12-2 assume !(main_~i~0 <= 0); 18281#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18278#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18137#L12 assume !(main_~i~0 >= 10); 18127#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 18128#L15-1 [2021-10-11 00:29:08,983 INFO L796 eck$LassoCheckResult]: Loop: 18128#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 18133#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18134#L12 assume !(main_~i~0 >= 10); 18242#L12-2 assume !(main_~i~0 <= 0); 18241#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 18240#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18239#L12 assume !(main_~i~0 >= 10); 18238#L12-2 assume !(main_~i~0 <= 0); 18237#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 18236#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18235#L12 assume !(main_~i~0 >= 10); 18234#L12-2 assume !(main_~i~0 <= 0); 18233#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 18232#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18231#L12 assume !(main_~i~0 >= 10); 18230#L12-2 assume !(main_~i~0 <= 0); 18229#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 18228#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18227#L12 assume !(main_~i~0 >= 10); 18216#L12-2 assume !(main_~i~0 <= 0); 18217#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 18213#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18211#L12 assume !(main_~i~0 >= 10); 18212#L12-2 assume !(main_~i~0 <= 0); 18209#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 18208#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18205#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 18206#L12-2 assume !(main_~i~0 <= 0); 18280#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18277#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18207#L12 assume !(main_~i~0 >= 10); 18204#L12-2 assume !(main_~i~0 <= 0); 18140#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18141#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18276#L12 assume !(main_~i~0 >= 10); 18275#L12-2 assume !(main_~i~0 <= 0); 18274#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18273#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18272#L12 assume !(main_~i~0 >= 10); 18271#L12-2 assume !(main_~i~0 <= 0); 18270#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18269#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18268#L12 assume !(main_~i~0 >= 10); 18267#L12-2 assume !(main_~i~0 <= 0); 18266#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18265#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18264#L12 assume !(main_~i~0 >= 10); 18263#L12-2 assume !(main_~i~0 <= 0); 18262#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18261#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18260#L12 assume !(main_~i~0 >= 10); 18259#L12-2 assume !(main_~i~0 <= 0); 18258#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18257#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18256#L12 assume !(main_~i~0 >= 10); 18255#L12-2 assume !(main_~i~0 <= 0); 18254#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18253#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18252#L12 assume !(main_~i~0 >= 10); 18251#L12-2 assume !(main_~i~0 <= 0); 18250#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18249#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18248#L12 assume !(main_~i~0 >= 10); 18247#L12-2 assume !(main_~i~0 <= 0); 18244#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18246#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18245#L12 assume !(main_~i~0 >= 10); 18243#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 18128#L15-1 [2021-10-11 00:29:08,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:08,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1244253986, now seen corresponding path program 7 times [2021-10-11 00:29:08,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:08,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918975556] [2021-10-11 00:29:08,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:08,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:29:08,990 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:29:08,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:29:08,994 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:29:08,996 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:29:08,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:08,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1504997932, now seen corresponding path program 15 times [2021-10-11 00:29:08,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:08,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917255420] [2021-10-11 00:29:08,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:09,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:29:09,004 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:29:09,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:29:09,011 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:29:09,013 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:29:09,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:09,014 INFO L82 PathProgramCache]: Analyzing trace with hash -92185483, now seen corresponding path program 14 times [2021-10-11 00:29:09,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:09,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263266325] [2021-10-11 00:29:09,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:09,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:09,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 1007 proven. 78 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-11 00:29:09,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263266325] [2021-10-11 00:29:09,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175943457] [2021-10-11 00:29:09,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:29:09,180 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-11 00:29:09,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:29:09,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-11 00:29:09,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:29:09,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 1007 proven. 78 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-11 00:29:09,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:29:09,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-10-11 00:29:09,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903647676] [2021-10-11 00:29:09,857 WARN L197 SmtUtils]: Spent 569.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 66 [2021-10-11 00:29:09,871 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:29:09,871 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:29:09,871 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:29:09,871 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:29:09,871 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-11 00:29:09,871 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:09,872 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:29:09,872 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:29:09,872 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration24_Loop [2021-10-11 00:29:09,872 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:29:09,872 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:29:09,872 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:09,879 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:09,884 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:09,886 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:09,929 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:29:09,929 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 113 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 113 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:09,932 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:29:09,932 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 114 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 114 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:09,955 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-11 00:29:09,955 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-11 00:29:09,959 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-11 00:29:09,977 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:29:09,977 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:29:09,977 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:29:09,977 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:29:09,977 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-11 00:29:09,978 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:09,978 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:29:09,978 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:29:09,978 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration24_Loop [2021-10-11 00:29:09,978 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:29:09,978 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:29:09,978 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:09,981 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:09,988 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:09,998 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:10,058 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:29:10,059 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 115 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 115 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:10,061 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2021-10-11 00:29:10,063 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:29:10,063 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:29:10,063 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:29:10,063 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:29:10,065 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-11 00:29:10,065 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-11 00:29:10,070 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 116 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 116 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:10,093 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2021-10-11 00:29:10,094 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:29:10,094 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-11 00:29:10,095 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:29:10,095 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:29:10,095 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:29:10,096 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-11 00:29:10,096 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-11 00:29:10,098 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-11 00:29:10,101 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-11 00:29:10,101 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 117 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 117 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:10,104 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-11 00:29:10,104 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-11 00:29:10,104 INFO L510 LassoAnalysis]: Proved termination. [2021-10-11 00:29:10,104 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-11 00:29:10,124 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-11 00:29:10,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:10,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:10,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 00:29:10,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:29:10,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:10,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-11 00:29:10,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:29:10,372 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-11 00:29:10,373 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 9 loop predicates [2021-10-11 00:29:10,373 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 214 states and 248 transitions. cyclomatic complexity: 39 Second operand 10 states. [2021-10-11 00:29:10,962 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 214 states and 248 transitions. cyclomatic complexity: 39. Second operand 10 states. Result 1013 states and 1221 transitions. Complement of second has 35 states. [2021-10-11 00:29:10,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 18 states 1 stem states 16 non-accepting loop states 1 accepting loop states [2021-10-11 00:29:10,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-11 00:29:10,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 81 transitions. [2021-10-11 00:29:10,967 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 18 states and 81 transitions. Stem has 44 letters. Loop has 68 letters. [2021-10-11 00:29:10,968 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:29:10,968 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 18 states and 81 transitions. Stem has 112 letters. Loop has 68 letters. [2021-10-11 00:29:10,969 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:29:10,969 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 18 states and 81 transitions. Stem has 44 letters. Loop has 136 letters. [2021-10-11 00:29:10,970 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:29:10,971 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1013 states and 1221 transitions. [2021-10-11 00:29:10,977 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 84 [2021-10-11 00:29:10,982 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1013 states to 739 states and 871 transitions. [2021-10-11 00:29:10,983 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 198 [2021-10-11 00:29:10,983 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 208 [2021-10-11 00:29:10,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 739 states and 871 transitions. [2021-10-11 00:29:10,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-11 00:29:10,984 INFO L692 BuchiCegarLoop]: Abstraction has 739 states and 871 transitions. [2021-10-11 00:29:10,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states and 871 transitions. [2021-10-11 00:29:10,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 717. [2021-10-11 00:29:10,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 717 states. [2021-10-11 00:29:10,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 848 transitions. [2021-10-11 00:29:10,997 INFO L715 BuchiCegarLoop]: Abstraction has 717 states and 848 transitions. [2021-10-11 00:29:10,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:29:10,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-11 00:29:10,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-11 00:29:10,998 INFO L87 Difference]: Start difference. First operand 717 states and 848 transitions. Second operand 10 states. [2021-10-11 00:29:11,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:11,065 INFO L93 Difference]: Finished difference Result 296 states and 328 transitions. [2021-10-11 00:29:11,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-11 00:29:11,066 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 296 states and 328 transitions. [2021-10-11 00:29:11,068 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2021-10-11 00:29:11,070 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 296 states to 241 states and 273 transitions. [2021-10-11 00:29:11,070 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 155 [2021-10-11 00:29:11,070 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 155 [2021-10-11 00:29:11,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 241 states and 273 transitions. [2021-10-11 00:29:11,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-11 00:29:11,071 INFO L692 BuchiCegarLoop]: Abstraction has 241 states and 273 transitions. [2021-10-11 00:29:11,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states and 273 transitions. [2021-10-11 00:29:11,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 214. [2021-10-11 00:29:11,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2021-10-11 00:29:11,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 246 transitions. [2021-10-11 00:29:11,076 INFO L715 BuchiCegarLoop]: Abstraction has 214 states and 246 transitions. [2021-10-11 00:29:11,076 INFO L595 BuchiCegarLoop]: Abstraction has 214 states and 246 transitions. [2021-10-11 00:29:11,076 INFO L427 BuchiCegarLoop]: ======== Iteration 25============ [2021-10-11 00:29:11,077 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 214 states and 246 transitions. [2021-10-11 00:29:11,078 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 80 [2021-10-11 00:29:11,078 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:29:11,078 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:29:11,079 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 10, 1, 1, 1] [2021-10-11 00:29:11,079 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [18, 17, 17, 10, 8, 1, 1] [2021-10-11 00:29:11,079 INFO L794 eck$LassoCheckResult]: Stem: 21129#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 21130#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21141#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 21194#L12-2 assume !(main_~i~0 <= 0); 21193#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21192#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21190#L12 assume !(main_~i~0 >= 10); 21191#L12-2 assume !(main_~i~0 <= 0); 21201#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21317#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21137#L12 assume !(main_~i~0 >= 10); 21138#L12-2 assume !(main_~i~0 <= 0); 21200#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21198#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21199#L12 assume !(main_~i~0 >= 10); 21299#L12-2 assume !(main_~i~0 <= 0); 21297#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21295#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21293#L12 assume !(main_~i~0 >= 10); 21291#L12-2 assume !(main_~i~0 <= 0); 21289#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21287#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21285#L12 assume !(main_~i~0 >= 10); 21283#L12-2 assume !(main_~i~0 <= 0); 21281#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21279#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21277#L12 assume !(main_~i~0 >= 10); 21275#L12-2 assume !(main_~i~0 <= 0); 21273#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21271#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21269#L12 assume !(main_~i~0 >= 10); 21267#L12-2 assume !(main_~i~0 <= 0); 21265#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21263#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21261#L12 assume !(main_~i~0 >= 10); 21259#L12-2 assume !(main_~i~0 <= 0); 21257#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21255#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21248#L12 assume !(main_~i~0 >= 10); 21252#L12-2 assume !(main_~i~0 <= 0); 21251#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21247#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21244#L12 assume !(main_~i~0 >= 10); 21125#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 21126#L15-1 [2021-10-11 00:29:11,080 INFO L796 eck$LassoCheckResult]: Loop: 21126#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 21202#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21135#L12 assume !(main_~i~0 >= 10); 21136#L12-2 assume !(main_~i~0 <= 0); 21239#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 21238#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21237#L12 assume !(main_~i~0 >= 10); 21236#L12-2 assume !(main_~i~0 <= 0); 21235#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 21234#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21233#L12 assume !(main_~i~0 >= 10); 21232#L12-2 assume !(main_~i~0 <= 0); 21231#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 21230#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21229#L12 assume !(main_~i~0 >= 10); 21228#L12-2 assume !(main_~i~0 <= 0); 21227#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 21226#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21225#L12 assume !(main_~i~0 >= 10); 21224#L12-2 assume !(main_~i~0 <= 0); 21223#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 21222#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21221#L12 assume !(main_~i~0 >= 10); 21215#L12-2 assume !(main_~i~0 <= 0); 21216#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 21211#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21212#L12 assume !(main_~i~0 >= 10); 21217#L12-2 assume !(main_~i~0 <= 0); 21207#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 21206#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21204#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 21203#L12-2 assume !(main_~i~0 <= 0); 21139#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21131#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21132#L12 assume !(main_~i~0 >= 10); 21205#L12-2 assume !(main_~i~0 <= 0); 21313#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21311#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21309#L12 assume !(main_~i~0 >= 10); 21307#L12-2 assume !(main_~i~0 <= 0); 21305#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21303#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21301#L12 assume !(main_~i~0 >= 10); 21300#L12-2 assume !(main_~i~0 <= 0); 21298#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21296#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21294#L12 assume !(main_~i~0 >= 10); 21292#L12-2 assume !(main_~i~0 <= 0); 21290#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21288#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21286#L12 assume !(main_~i~0 >= 10); 21284#L12-2 assume !(main_~i~0 <= 0); 21282#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21280#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21278#L12 assume !(main_~i~0 >= 10); 21276#L12-2 assume !(main_~i~0 <= 0); 21274#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21272#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21270#L12 assume !(main_~i~0 >= 10); 21268#L12-2 assume !(main_~i~0 <= 0); 21266#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21264#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21262#L12 assume !(main_~i~0 >= 10); 21260#L12-2 assume !(main_~i~0 <= 0); 21258#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21256#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21254#L12 assume !(main_~i~0 >= 10); 21253#L12-2 assume !(main_~i~0 <= 0); 21241#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21249#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21245#L12 assume !(main_~i~0 >= 10); 21240#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 21126#L15-1 [2021-10-11 00:29:11,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:11,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1244253986, now seen corresponding path program 8 times [2021-10-11 00:29:11,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:11,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836251335] [2021-10-11 00:29:11,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:11,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:29:11,087 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:29:11,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:29:11,091 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:29:11,093 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:29:11,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:11,094 INFO L82 PathProgramCache]: Analyzing trace with hash 903675531, now seen corresponding path program 16 times [2021-10-11 00:29:11,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:11,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297047287] [2021-10-11 00:29:11,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:11,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:29:11,103 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:29:11,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:29:11,110 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:29:11,113 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:29:11,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:11,113 INFO L82 PathProgramCache]: Analyzing trace with hash -950496084, now seen corresponding path program 15 times [2021-10-11 00:29:11,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:11,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084630785] [2021-10-11 00:29:11,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:11,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:11,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 1091 proven. 105 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-11 00:29:11,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084630785] [2021-10-11 00:29:11,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638148177] [2021-10-11 00:29:11,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:29:11,289 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 25 check-sat command(s) [2021-10-11 00:29:11,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:29:11,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-11 00:29:11,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:29:11,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 1091 proven. 105 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-11 00:29:11,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:29:11,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-10-11 00:29:11,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463752458] [2021-10-11 00:29:12,066 WARN L197 SmtUtils]: Spent 657.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 69 [2021-10-11 00:29:12,083 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:29:12,083 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:29:12,083 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:29:12,083 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:29:12,083 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-11 00:29:12,083 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:12,083 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:29:12,084 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:29:12,084 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration25_Loop [2021-10-11 00:29:12,084 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:29:12,084 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:29:12,085 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:12,088 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:12,098 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:12,104 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:12,158 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:29:12,159 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 119 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:29:12,162 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:29:12,162 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 119 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:12,178 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-11 00:29:12,179 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_27=1} Honda state: {v_rep~unnamed0~0~true_27=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 120 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:29:12,214 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:29:12,214 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 120 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 121 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:29:12,273 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-11 00:29:12,273 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 121 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:12,294 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-11 00:29:12,327 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:29:12,327 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:29:12,327 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:29:12,327 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:29:12,327 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-11 00:29:12,327 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:12,327 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:29:12,327 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:29:12,327 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration25_Loop [2021-10-11 00:29:12,327 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:29:12,327 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:29:12,328 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:12,332 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:12,342 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:12,349 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:12,405 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:29:12,405 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 122 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:29:12,409 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2021-10-11 00:29:12,410 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:29:12,411 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:29:12,411 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:29:12,411 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:29:12,413 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-11 00:29:12,413 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 122 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:12,425 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 123 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 123 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:12,454 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2021-10-11 00:29:12,456 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:29:12,456 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-11 00:29:12,456 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:29:12,456 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:29:12,456 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:29:12,457 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-11 00:29:12,457 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-11 00:29:12,459 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-11 00:29:12,460 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-11 00:29:12,460 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 124 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 124 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:12,463 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-11 00:29:12,463 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-11 00:29:12,463 INFO L510 LassoAnalysis]: Proved termination. [2021-10-11 00:29:12,463 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-11 00:29:12,482 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-11 00:29:12,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:12,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:12,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 00:29:12,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:29:12,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:12,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-11 00:29:12,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:29:12,764 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 422 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-11 00:29:12,765 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 10 loop predicates [2021-10-11 00:29:12,765 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 214 states and 246 transitions. cyclomatic complexity: 37 Second operand 11 states. [2021-10-11 00:29:13,336 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 214 states and 246 transitions. cyclomatic complexity: 37. Second operand 11 states. Result 1165 states and 1405 transitions. Complement of second has 39 states. [2021-10-11 00:29:13,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 20 states 1 stem states 18 non-accepting loop states 1 accepting loop states [2021-10-11 00:29:13,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-11 00:29:13,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 90 transitions. [2021-10-11 00:29:13,347 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 90 transitions. Stem has 44 letters. Loop has 72 letters. [2021-10-11 00:29:13,348 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:29:13,348 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 90 transitions. Stem has 116 letters. Loop has 72 letters. [2021-10-11 00:29:13,348 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:29:13,348 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 90 transitions. Stem has 44 letters. Loop has 144 letters. [2021-10-11 00:29:13,349 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:29:13,349 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1165 states and 1405 transitions. [2021-10-11 00:29:13,356 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 84 [2021-10-11 00:29:13,361 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1165 states to 823 states and 971 transitions. [2021-10-11 00:29:13,362 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 202 [2021-10-11 00:29:13,362 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 213 [2021-10-11 00:29:13,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 823 states and 971 transitions. [2021-10-11 00:29:13,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-11 00:29:13,363 INFO L692 BuchiCegarLoop]: Abstraction has 823 states and 971 transitions. [2021-10-11 00:29:13,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states and 971 transitions. [2021-10-11 00:29:13,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 799. [2021-10-11 00:29:13,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 799 states. [2021-10-11 00:29:13,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 946 transitions. [2021-10-11 00:29:13,376 INFO L715 BuchiCegarLoop]: Abstraction has 799 states and 946 transitions. [2021-10-11 00:29:13,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:29:13,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-11 00:29:13,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-11 00:29:13,377 INFO L87 Difference]: Start difference. First operand 799 states and 946 transitions. Second operand 11 states. [2021-10-11 00:29:13,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:13,458 INFO L93 Difference]: Finished difference Result 308 states and 338 transitions. [2021-10-11 00:29:13,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-11 00:29:13,459 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 308 states and 338 transitions. [2021-10-11 00:29:13,461 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2021-10-11 00:29:13,462 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 308 states to 245 states and 275 transitions. [2021-10-11 00:29:13,463 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 159 [2021-10-11 00:29:13,463 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 159 [2021-10-11 00:29:13,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 245 states and 275 transitions. [2021-10-11 00:29:13,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-11 00:29:13,463 INFO L692 BuchiCegarLoop]: Abstraction has 245 states and 275 transitions. [2021-10-11 00:29:13,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states and 275 transitions. [2021-10-11 00:29:13,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 214. [2021-10-11 00:29:13,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2021-10-11 00:29:13,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 244 transitions. [2021-10-11 00:29:13,468 INFO L715 BuchiCegarLoop]: Abstraction has 214 states and 244 transitions. [2021-10-11 00:29:13,468 INFO L595 BuchiCegarLoop]: Abstraction has 214 states and 244 transitions. [2021-10-11 00:29:13,468 INFO L427 BuchiCegarLoop]: ======== Iteration 26============ [2021-10-11 00:29:13,468 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 214 states and 244 transitions. [2021-10-11 00:29:13,469 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 80 [2021-10-11 00:29:13,469 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:29:13,469 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:29:13,470 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 10, 1, 1, 1] [2021-10-11 00:29:13,470 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [19, 18, 18, 10, 9, 1, 1] [2021-10-11 00:29:13,471 INFO L794 eck$LassoCheckResult]: Stem: 24406#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 24407#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24417#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 24470#L12-2 assume !(main_~i~0 <= 0); 24469#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24468#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24466#L12 assume !(main_~i~0 >= 10); 24467#L12-2 assume !(main_~i~0 <= 0); 24596#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24594#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24413#L12 assume !(main_~i~0 >= 10); 24414#L12-2 assume !(main_~i~0 <= 0); 24476#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24474#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24475#L12 assume !(main_~i~0 >= 10); 24574#L12-2 assume !(main_~i~0 <= 0); 24572#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24570#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24568#L12 assume !(main_~i~0 >= 10); 24566#L12-2 assume !(main_~i~0 <= 0); 24564#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24562#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24560#L12 assume !(main_~i~0 >= 10); 24558#L12-2 assume !(main_~i~0 <= 0); 24556#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24554#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24552#L12 assume !(main_~i~0 >= 10); 24550#L12-2 assume !(main_~i~0 <= 0); 24548#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24546#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24544#L12 assume !(main_~i~0 >= 10); 24542#L12-2 assume !(main_~i~0 <= 0); 24540#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24538#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24536#L12 assume !(main_~i~0 >= 10); 24534#L12-2 assume !(main_~i~0 <= 0); 24532#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24530#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24523#L12 assume !(main_~i~0 >= 10); 24527#L12-2 assume !(main_~i~0 <= 0); 24526#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24522#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24519#L12 assume !(main_~i~0 >= 10); 24402#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 24403#L15-1 [2021-10-11 00:29:13,471 INFO L796 eck$LassoCheckResult]: Loop: 24403#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 24408#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24409#L12 assume !(main_~i~0 >= 10); 24412#L12-2 assume !(main_~i~0 <= 0); 24514#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 24513#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24512#L12 assume !(main_~i~0 >= 10); 24511#L12-2 assume !(main_~i~0 <= 0); 24510#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 24509#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24508#L12 assume !(main_~i~0 >= 10); 24507#L12-2 assume !(main_~i~0 <= 0); 24506#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 24505#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24504#L12 assume !(main_~i~0 >= 10); 24503#L12-2 assume !(main_~i~0 <= 0); 24502#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 24501#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24500#L12 assume !(main_~i~0 >= 10); 24499#L12-2 assume !(main_~i~0 <= 0); 24498#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 24497#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24496#L12 assume !(main_~i~0 >= 10); 24495#L12-2 assume !(main_~i~0 <= 0); 24494#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 24493#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24492#L12 assume !(main_~i~0 >= 10); 24490#L12-2 assume !(main_~i~0 <= 0); 24488#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 24489#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24484#L12 assume !(main_~i~0 >= 10); 24485#L12-2 assume !(main_~i~0 <= 0); 24482#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 24481#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24478#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 24477#L12-2 assume !(main_~i~0 <= 0); 24415#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24416#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24479#L12 assume !(main_~i~0 >= 10); 24480#L12-2 assume !(main_~i~0 <= 0); 24588#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24586#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24584#L12 assume !(main_~i~0 >= 10); 24582#L12-2 assume !(main_~i~0 <= 0); 24580#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24578#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24576#L12 assume !(main_~i~0 >= 10); 24575#L12-2 assume !(main_~i~0 <= 0); 24573#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24571#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24569#L12 assume !(main_~i~0 >= 10); 24567#L12-2 assume !(main_~i~0 <= 0); 24565#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24563#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24561#L12 assume !(main_~i~0 >= 10); 24559#L12-2 assume !(main_~i~0 <= 0); 24557#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24555#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24553#L12 assume !(main_~i~0 >= 10); 24551#L12-2 assume !(main_~i~0 <= 0); 24549#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24547#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24545#L12 assume !(main_~i~0 >= 10); 24543#L12-2 assume !(main_~i~0 <= 0); 24541#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24539#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24537#L12 assume !(main_~i~0 >= 10); 24535#L12-2 assume !(main_~i~0 <= 0); 24533#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24531#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24529#L12 assume !(main_~i~0 >= 10); 24528#L12-2 assume !(main_~i~0 <= 0); 24516#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24524#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24520#L12 assume !(main_~i~0 >= 10); 24515#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 24403#L15-1 [2021-10-11 00:29:13,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:13,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1244253986, now seen corresponding path program 9 times [2021-10-11 00:29:13,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:13,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677822762] [2021-10-11 00:29:13,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:13,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:29:13,476 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:29:13,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:29:13,480 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:29:13,482 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:29:13,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:13,483 INFO L82 PathProgramCache]: Analyzing trace with hash -917947454, now seen corresponding path program 17 times [2021-10-11 00:29:13,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:13,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788514020] [2021-10-11 00:29:13,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:13,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:29:13,490 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:29:13,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:29:13,496 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:29:13,499 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:29:13,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:13,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1759172963, now seen corresponding path program 16 times [2021-10-11 00:29:13,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:13,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549987408] [2021-10-11 00:29:13,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:13,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:13,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 1175 proven. 136 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-11 00:29:13,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549987408] [2021-10-11 00:29:13,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092418171] [2021-10-11 00:29:13,635 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:29:13,698 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-11 00:29:13,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:29:13,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-11 00:29:13,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:29:13,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 1175 proven. 136 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-11 00:29:13,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:29:13,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2021-10-11 00:29:13,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675661337] [2021-10-11 00:29:14,542 WARN L197 SmtUtils]: Spent 722.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 74 [2021-10-11 00:29:14,576 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:29:14,576 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:29:14,576 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:29:14,576 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:29:14,577 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-11 00:29:14,577 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:14,577 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:29:14,577 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:29:14,578 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration26_Loop [2021-10-11 00:29:14,578 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:29:14,578 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:29:14,580 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:14,584 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:14,594 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:14,601 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:14,659 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:29:14,659 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 126 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:29:14,667 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:29:14,667 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 126 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:14,691 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-11 00:29:14,691 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_29=1} Honda state: {v_rep~unnamed0~0~true_29=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 127 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 127 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:14,724 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:29:14,724 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 128 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 128 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:14,751 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-11 00:29:14,751 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-11 00:29:14,765 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-11 00:29:14,785 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:29:14,785 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:29:14,785 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:29:14,785 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:29:14,785 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-11 00:29:14,785 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:14,785 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:29:14,785 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:29:14,785 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration26_Loop [2021-10-11 00:29:14,785 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:29:14,786 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:29:14,786 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:14,794 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:14,809 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:14,813 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:29:14,867 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:29:14,868 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 129 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:29:14,969 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2021-10-11 00:29:14,971 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:29:14,971 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-11 00:29:14,971 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:29:14,971 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:29:14,971 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 129 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:14,980 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-11 00:29:14,981 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-11 00:29:15,001 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-11 00:29:15,004 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-11 00:29:15,004 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 130 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:29:15,007 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-11 00:29:15,007 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-11 00:29:15,008 INFO L510 LassoAnalysis]: Proved termination. [2021-10-11 00:29:15,008 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 130 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:29:15,034 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-11 00:29:15,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:15,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:15,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 00:29:15,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:29:15,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:15,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-11 00:29:15,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:29:15,315 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 494 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-11 00:29:15,316 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 11 loop predicates [2021-10-11 00:29:15,316 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 214 states and 244 transitions. cyclomatic complexity: 35 Second operand 12 states. [2021-10-11 00:29:16,050 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 214 states and 244 transitions. cyclomatic complexity: 35. Second operand 12 states. Result 1239 states and 1496 transitions. Complement of second has 43 states. [2021-10-11 00:29:16,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 22 states 1 stem states 20 non-accepting loop states 1 accepting loop states [2021-10-11 00:29:16,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-11 00:29:16,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 97 transitions. [2021-10-11 00:29:16,051 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 22 states and 97 transitions. Stem has 44 letters. Loop has 76 letters. [2021-10-11 00:29:16,052 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:29:16,052 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 22 states and 97 transitions. Stem has 120 letters. Loop has 76 letters. [2021-10-11 00:29:16,053 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:29:16,053 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 22 states and 97 transitions. Stem has 44 letters. Loop has 152 letters. [2021-10-11 00:29:16,053 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:29:16,054 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1239 states and 1496 transitions. [2021-10-11 00:29:16,062 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 80 [2021-10-11 00:29:16,068 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1239 states to 787 states and 932 transitions. [2021-10-11 00:29:16,069 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 168 [2021-10-11 00:29:16,069 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 172 [2021-10-11 00:29:16,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 787 states and 932 transitions. [2021-10-11 00:29:16,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-11 00:29:16,070 INFO L692 BuchiCegarLoop]: Abstraction has 787 states and 932 transitions. [2021-10-11 00:29:16,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states and 932 transitions. [2021-10-11 00:29:16,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 401. [2021-10-11 00:29:16,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2021-10-11 00:29:16,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 456 transitions. [2021-10-11 00:29:16,082 INFO L715 BuchiCegarLoop]: Abstraction has 401 states and 456 transitions. [2021-10-11 00:29:16,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:29:16,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-11 00:29:16,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-11 00:29:16,083 INFO L87 Difference]: Start difference. First operand 401 states and 456 transitions. Second operand 12 states. [2021-10-11 00:29:16,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:16,247 INFO L93 Difference]: Finished difference Result 405 states and 418 transitions. [2021-10-11 00:29:16,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-11 00:29:16,247 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 405 states and 418 transitions. [2021-10-11 00:29:16,250 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 80 [2021-10-11 00:29:16,252 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 405 states to 292 states and 305 transitions. [2021-10-11 00:29:16,252 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 178 [2021-10-11 00:29:16,253 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 284 [2021-10-11 00:29:16,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 292 states and 305 transitions. [2021-10-11 00:29:16,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-11 00:29:16,253 INFO L692 BuchiCegarLoop]: Abstraction has 292 states and 305 transitions. [2021-10-11 00:29:16,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states and 305 transitions. [2021-10-11 00:29:16,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 169. [2021-10-11 00:29:16,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2021-10-11 00:29:16,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 182 transitions. [2021-10-11 00:29:16,257 INFO L715 BuchiCegarLoop]: Abstraction has 169 states and 182 transitions. [2021-10-11 00:29:16,257 INFO L595 BuchiCegarLoop]: Abstraction has 169 states and 182 transitions. [2021-10-11 00:29:16,257 INFO L427 BuchiCegarLoop]: ======== Iteration 27============ [2021-10-11 00:29:16,258 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 169 states and 182 transitions. [2021-10-11 00:29:16,259 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 80 [2021-10-11 00:29:16,259 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:29:16,259 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:29:16,259 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2021-10-11 00:29:16,260 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [20, 19, 19, 10, 10, 1, 1] [2021-10-11 00:29:16,260 INFO L794 eck$LassoCheckResult]: Stem: 27489#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 27490#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27495#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 27487#L12-2 assume !(main_~i~0 <= 0); 27488#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 27493#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27494#L12 assume !(main_~i~0 >= 10); 27485#L12-2 [2021-10-11 00:29:16,260 INFO L796 eck$LassoCheckResult]: Loop: 27485#L12-2 assume !(main_~i~0 <= 0); 27486#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 27615#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27614#L12 assume !(main_~i~0 >= 10); 27613#L12-2 assume !(main_~i~0 <= 0); 27612#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 27611#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27610#L12 assume !(main_~i~0 >= 10); 27609#L12-2 assume !(main_~i~0 <= 0); 27608#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 27607#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27606#L12 assume !(main_~i~0 >= 10); 27605#L12-2 assume !(main_~i~0 <= 0); 27604#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 27603#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27602#L12 assume !(main_~i~0 >= 10); 27601#L12-2 assume !(main_~i~0 <= 0); 27600#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 27599#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27598#L12 assume !(main_~i~0 >= 10); 27597#L12-2 assume !(main_~i~0 <= 0); 27596#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 27595#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27594#L12 assume !(main_~i~0 >= 10); 27593#L12-2 assume !(main_~i~0 <= 0); 27592#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 27591#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27590#L12 assume !(main_~i~0 >= 10); 27589#L12-2 assume !(main_~i~0 <= 0); 27588#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 27587#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27586#L12 assume !(main_~i~0 >= 10); 27585#L12-2 assume !(main_~i~0 <= 0); 27584#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 27583#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27582#L12 assume !(main_~i~0 >= 10); 27580#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 27579#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 27491#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27492#L12 assume !(main_~i~0 >= 10); 27496#L12-2 assume !(main_~i~0 <= 0); 27581#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 27653#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27652#L12 assume !(main_~i~0 >= 10); 27651#L12-2 assume !(main_~i~0 <= 0); 27650#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 27649#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27648#L12 assume !(main_~i~0 >= 10); 27647#L12-2 assume !(main_~i~0 <= 0); 27646#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 27645#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27644#L12 assume !(main_~i~0 >= 10); 27643#L12-2 assume !(main_~i~0 <= 0); 27642#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 27641#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27640#L12 assume !(main_~i~0 >= 10); 27639#L12-2 assume !(main_~i~0 <= 0); 27638#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 27637#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27636#L12 assume !(main_~i~0 >= 10); 27635#L12-2 assume !(main_~i~0 <= 0); 27634#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 27633#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27632#L12 assume !(main_~i~0 >= 10); 27631#L12-2 assume !(main_~i~0 <= 0); 27630#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 27629#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27628#L12 assume !(main_~i~0 >= 10); 27627#L12-2 assume !(main_~i~0 <= 0); 27626#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 27625#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27624#L12 assume !(main_~i~0 >= 10); 27623#L12-2 assume !(main_~i~0 <= 0); 27622#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 27621#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27616#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 27617#L12-2 assume !(main_~i~0 <= 0); 27497#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 27498#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27620#L12 assume !(main_~i~0 >= 10); 27485#L12-2 [2021-10-11 00:29:16,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:16,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1365704114, now seen corresponding path program 1 times [2021-10-11 00:29:16,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:16,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133829636] [2021-10-11 00:29:16,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:16,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:29:16,264 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:29:16,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:29:16,265 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:29:16,266 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:29:16,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:16,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1260641161, now seen corresponding path program 18 times [2021-10-11 00:29:16,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:16,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236105050] [2021-10-11 00:29:16,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:16,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:29:16,275 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:29:16,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:29:16,283 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:29:16,286 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:29:16,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:16,286 INFO L82 PathProgramCache]: Analyzing trace with hash -689456170, now seen corresponding path program 17 times [2021-10-11 00:29:16,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:16,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395127377] [2021-10-11 00:29:16,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:16,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:29:16,295 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:29:16,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:29:16,304 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:29:16,307 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:29:17,021 WARN L197 SmtUtils]: Spent 708.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 78 [2021-10-11 00:29:17,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 11.10 12:29:17 BoogieIcfgContainer [2021-10-11 00:29:17,150 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-11 00:29:17,151 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:29:17,151 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:29:17,151 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:29:17,152 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:28:49" (3/4) ... [2021-10-11 00:29:17,154 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-11 00:29:17,205 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211b980b-d995-4c48-822a-479b0726ecbe/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:29:17,205 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:29:17,206 INFO L168 Benchmark]: Toolchain (without parser) took 28030.07 ms. Allocated memory was 121.6 MB in the beginning and 446.7 MB in the end (delta: 325.1 MB). Free memory was 90.7 MB in the beginning and 401.9 MB in the end (delta: -311.2 MB). Peak memory consumption was 13.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:29:17,207 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 81.8 MB. Free memory was 38.4 MB in the beginning and 38.4 MB in the end (delta: 42.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:29:17,207 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.79 ms. Allocated memory is still 121.6 MB. Free memory was 90.5 MB in the beginning and 100.3 MB in the end (delta: -9.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:29:17,208 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.81 ms. Allocated memory is still 121.6 MB. Free memory was 100.3 MB in the beginning and 98.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:29:17,208 INFO L168 Benchmark]: Boogie Preprocessor took 21.36 ms. Allocated memory is still 121.6 MB. Free memory was 98.8 MB in the beginning and 97.8 MB in the end (delta: 933.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:29:17,208 INFO L168 Benchmark]: RCFGBuilder took 265.84 ms. Allocated memory is still 121.6 MB. Free memory was 97.8 MB in the beginning and 89.0 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:29:17,209 INFO L168 Benchmark]: BuchiAutomizer took 27362.51 ms. Allocated memory was 121.6 MB in the beginning and 446.7 MB in the end (delta: 325.1 MB). Free memory was 89.0 MB in the beginning and 405.0 MB in the end (delta: -316.0 MB). Peak memory consumption was 218.2 MB. Max. memory is 16.1 GB. [2021-10-11 00:29:17,209 INFO L168 Benchmark]: Witness Printer took 54.77 ms. Allocated memory is still 446.7 MB. Free memory was 405.0 MB in the beginning and 401.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:29:17,212 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 81.8 MB. Free memory was 38.4 MB in the beginning and 38.4 MB in the end (delta: 42.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 283.79 ms. Allocated memory is still 121.6 MB. Free memory was 90.5 MB in the beginning and 100.3 MB in the end (delta: -9.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.81 ms. Allocated memory is still 121.6 MB. Free memory was 100.3 MB in the beginning and 98.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.36 ms. Allocated memory is still 121.6 MB. Free memory was 98.8 MB in the beginning and 97.8 MB in the end (delta: 933.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 265.84 ms. Allocated memory is still 121.6 MB. Free memory was 97.8 MB in the beginning and 89.0 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 27362.51 ms. Allocated memory was 121.6 MB in the beginning and 446.7 MB in the end (delta: 325.1 MB). Free memory was 89.0 MB in the beginning and 405.0 MB in the end (delta: -316.0 MB). Peak memory consumption was 218.2 MB. Max. memory is 16.1 GB. * Witness Printer took 54.77 ms. Allocated memory is still 446.7 MB. Free memory was 405.0 MB in the beginning and 401.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 37 terminating modules (22 trivial, 14 deterministic, 1 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function i and consists of 4 locations. One deterministic module has affine ranking function i and consists of 4 locations. One deterministic module has affine ranking function -2 * i + 1 and consists of 4 locations. One deterministic module has affine ranking function -2 * i + 17 and consists of 4 locations. One deterministic module has affine ranking function i and consists of 4 locations. One deterministic module has affine ranking function -1 * i and consists of 4 locations. One deterministic module has affine ranking function i and consists of 8 locations. One deterministic module has affine ranking function i and consists of 10 locations. One deterministic module has affine ranking function i and consists of 12 locations. One deterministic module has affine ranking function i and consists of 14 locations. One deterministic module has affine ranking function i and consists of 16 locations. One deterministic module has affine ranking function i and consists of 18 locations. One deterministic module has affine ranking function i and consists of 20 locations. One deterministic module has affine ranking function i and consists of 22 locations. One nondeterministic module has affine ranking function -2 * i + 17 and consists of 4 locations. 22 modules have a trivial ranking function, the largest among these consists of 12 locations. The remainder module has 169 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 27.2s and 27 iterations. TraceHistogramMax:20. Analysis of lassos took 18.1s. Construction of modules took 2.1s. Büchi inclusion checks took 6.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 36. Automata minimization 0.3s AutomataMinimizationTime, 37 MinimizatonAttempts, 1211 StatesRemovedByMinimization, 36 NontrivialMinimizations. Non-live state removal took 0.2s Buchi closure took 0.0s. Biggest automaton had 214 states and ocurred in iteration 18. Nontrivial modules had stage [14, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1520/3680 HoareTripleCheckerStatistics: 266 SDtfs, 767 SDslu, 9 SDs, 0 SdLazy, 2635 SolverSat, 277 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT4 conc0 concLT10 SILN0 SILU0 SILI9 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax163 hnf99 lsp45 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq127 hnf96 smp98 dnf100 smp100 tf112 neg100 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 50ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 23 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 15 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.5s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 15]: 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 {up=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2c4c8577=0, \result=0, i=9} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 11]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] int up; [L8] i = __VERIFIER_nondet_int() [L9] up = 0 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND TRUE i >= 10 [L13] up = 0 [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) Loop: [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND TRUE i <= 0 [L16] up = 1 [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND TRUE i >= 10 [L13] up = 0 [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...