./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/UpAndDown.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/UpAndDown.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be --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 1a3ce217426a55eb46107f2cdf23c10dcc5d92a99768880786a980fae67c3971 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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 0.2.1-dev-e943c26 [2021-10-21 19:35:41,607 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:35:41,609 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:35:41,642 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:35:41,643 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:35:41,645 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:35:41,647 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:35:41,649 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:35:41,652 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:35:41,653 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:35:41,655 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:35:41,657 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:35:41,657 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:35:41,659 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:35:41,661 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:35:41,663 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:35:41,665 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:35:41,666 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:35:41,669 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:35:41,672 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:35:41,675 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:35:41,677 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:35:41,679 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:35:41,680 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:35:41,685 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:35:41,685 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:35:41,686 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:35:41,687 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:35:41,688 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:35:41,689 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:35:41,690 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:35:41,691 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:35:41,692 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:35:41,694 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:35:41,695 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:35:41,696 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:35:41,697 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:35:41,697 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:35:41,698 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:35:41,699 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:35:41,700 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:35:41,702 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-21 19:35:41,760 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:35:41,760 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:35:41,761 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:35:41,761 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:35:41,763 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:35:41,763 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:35:41,763 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:35:41,763 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-21 19:35:41,763 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-21 19:35:41,763 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-21 19:35:41,764 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-21 19:35:41,764 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-21 19:35:41,764 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-21 19:35:41,764 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:35:41,764 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:35:41,764 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:35:41,765 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:35:41,765 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-21 19:35:41,765 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-21 19:35:41,765 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-21 19:35:41,765 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:35:41,765 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-21 19:35:41,766 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:35:41,766 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-21 19:35:41,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:35:41,766 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:35:41,766 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:35:41,767 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:35:41,767 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:35:41,768 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-21 19:35:41,768 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_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a3ce217426a55eb46107f2cdf23c10dcc5d92a99768880786a980fae67c3971 [2021-10-21 19:35:42,059 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:35:42,094 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:35:42,098 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:35:42,101 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:35:42,102 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:35:42,103 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/termination-restricted-15/UpAndDown.c [2021-10-21 19:35:42,214 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/data/13c9081fd/4edec9c7f67c4e9c948a0a5e3411df48/FLAG46b75bee7 [2021-10-21 19:35:42,714 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:35:42,715 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/sv-benchmarks/c/termination-restricted-15/UpAndDown.c [2021-10-21 19:35:42,720 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/data/13c9081fd/4edec9c7f67c4e9c948a0a5e3411df48/FLAG46b75bee7 [2021-10-21 19:35:43,112 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/data/13c9081fd/4edec9c7f67c4e9c948a0a5e3411df48 [2021-10-21 19:35:43,115 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:35:43,117 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:35:43,119 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:35:43,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:35:43,123 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:35:43,124 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:35:43" (1/1) ... [2021-10-21 19:35:43,125 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66a7e497 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:35:43, skipping insertion in model container [2021-10-21 19:35:43,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:35:43" (1/1) ... [2021-10-21 19:35:43,135 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:35:43,150 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:35:43,344 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:35:43,349 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:35:43,369 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:35:43,382 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:35:43,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:35:43 WrapperNode [2021-10-21 19:35:43,383 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:35:43,385 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:35:43,385 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:35:43,385 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:35:43,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:35:43" (1/1) ... [2021-10-21 19:35:43,400 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:35:43" (1/1) ... [2021-10-21 19:35:43,421 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:35:43,422 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:35:43,422 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:35:43,422 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:35:43,433 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:35:43" (1/1) ... [2021-10-21 19:35:43,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:35:43" (1/1) ... [2021-10-21 19:35:43,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:35:43" (1/1) ... [2021-10-21 19:35:43,434 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:35:43" (1/1) ... [2021-10-21 19:35:43,437 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:35:43" (1/1) ... [2021-10-21 19:35:43,442 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:35:43" (1/1) ... [2021-10-21 19:35:43,442 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:35:43" (1/1) ... [2021-10-21 19:35:43,444 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:35:43,445 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:35:43,445 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:35:43,445 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:35:43,447 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:35:43" (1/1) ... [2021-10-21 19:35:43,458 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:43,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:43,486 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:43,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-21 19:35:43,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:35:43,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:35:43,757 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:35:43,757 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-21 19:35:43,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:35:43 BoogieIcfgContainer [2021-10-21 19:35:43,761 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:35:43,763 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-21 19:35:43,763 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-21 19:35:43,768 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-21 19:35:43,769 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:35:43,769 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.10 07:35:43" (1/3) ... [2021-10-21 19:35:43,771 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@14bdcef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:35:43, skipping insertion in model container [2021-10-21 19:35:43,771 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:35:43,771 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:35:43" (2/3) ... [2021-10-21 19:35:43,772 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@14bdcef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:35:43, skipping insertion in model container [2021-10-21 19:35:43,772 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:35:43,772 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:35:43" (3/3) ... [2021-10-21 19:35:43,774 INFO L389 chiAutomizerObserver]: Analyzing ICFG UpAndDown.c [2021-10-21 19:35:43,852 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-21 19:35:43,853 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-21 19:35:43,853 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-21 19:35:43,853 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-21 19:35:43,853 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-21 19:35:43,854 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-21 19:35:43,854 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-21 19:35:43,854 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-21 19:35:43,870 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:35:43,890 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-21 19:35:43,890 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:35:43,891 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:35:43,896 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-21 19:35:43,896 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-21 19:35:43,897 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-21 19:35:43,897 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:35:43,898 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-21 19:35:43,898 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:35:43,898 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:35:43,898 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-21 19:35:43,899 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-21 19:35:43,904 INFO L791 eck$LassoCheckResult]: Stem: 5#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; 6#L18-1true [2021-10-21 19:35:43,905 INFO L793 eck$LassoCheckResult]: Loop: 6#L18-1true assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10#L12true assume 10 == main_~i~0;main_~up~0 := 0; 3#L12-2true assume 0 == main_~i~0;main_~up~0 := 1; 8#L15-1true assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 6#L18-1true [2021-10-21 19:35:43,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:43,911 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-10-21 19:35:43,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:35:43,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208557514] [2021-10-21 19:35:43,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:43,922 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:35:43,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:35:43,994 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:35:43,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:35:44,016 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:35:44,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:44,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1234538, now seen corresponding path program 1 times [2021-10-21 19:35:44,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:35:44,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640509755] [2021-10-21 19:35:44,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:44,021 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:35:44,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:44,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:35:44,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:35:44,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640509755] [2021-10-21 19:35:44,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640509755] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:35:44,104 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:35:44,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:35:44,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808348092] [2021-10-21 19:35:44,110 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:35:44,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:35:44,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:35:44,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:35:44,131 INFO L87 Difference]: Start difference. First operand has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:35:44,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:35:44,177 INFO L93 Difference]: Finished difference Result 17 states and 22 transitions. [2021-10-21 19:35:44,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:35:44,180 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 22 transitions. [2021-10-21 19:35:44,182 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-10-21 19:35:44,188 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 9 states and 14 transitions. [2021-10-21 19:35:44,189 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2021-10-21 19:35:44,189 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2021-10-21 19:35:44,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 14 transitions. [2021-10-21 19:35:44,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:35:44,191 INFO L681 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2021-10-21 19:35:44,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 14 transitions. [2021-10-21 19:35:44,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-21 19:35:44,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:35:44,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 14 transitions. [2021-10-21 19:35:44,239 INFO L704 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2021-10-21 19:35:44,239 INFO L587 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2021-10-21 19:35:44,240 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-21 19:35:44,240 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 14 transitions. [2021-10-21 19:35:44,241 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-10-21 19:35:44,241 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:35:44,241 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:35:44,241 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-21 19:35:44,242 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-21 19:35:44,242 INFO L791 eck$LassoCheckResult]: Stem: 37#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 38#L18-1 [2021-10-21 19:35:44,242 INFO L793 eck$LassoCheckResult]: Loop: 38#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 43#L12 assume 10 == main_~i~0;main_~up~0 := 0; 35#L12-2 assume !(0 == main_~i~0); 36#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 38#L18-1 [2021-10-21 19:35:44,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:44,243 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2021-10-21 19:35:44,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:35:44,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247708851] [2021-10-21 19:35:44,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:44,244 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:35:44,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:35:44,266 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:35:44,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:35:44,271 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:35:44,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:44,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1234602, now seen corresponding path program 1 times [2021-10-21 19:35:44,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:35:44,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77758502] [2021-10-21 19:35:44,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:44,273 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:35:44,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:35:44,299 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:35:44,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:35:44,307 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:35:44,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:44,308 INFO L82 PathProgramCache]: Analyzing trace with hash 29863753, now seen corresponding path program 1 times [2021-10-21 19:35:44,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:35:44,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328527696] [2021-10-21 19:35:44,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:44,309 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:35:44,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:35:44,335 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:35:44,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:35:44,344 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:35:44,467 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:35:44,482 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:35:44,482 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:35:44,482 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:35:44,482 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 19:35:44,483 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:44,483 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:35:44,483 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:35:44,483 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration2_Loop [2021-10-21 19:35:44,483 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:35:44,484 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:35:44,505 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:44,515 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:44,520 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:44,524 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:44,618 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:35:44,619 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 19:35:44,621 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:44,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:44,624 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:44,630 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:35:44,630 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:35:44,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-21 19:35:44,671 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:35:44,671 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:35:44,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:44,714 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:44,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:44,716 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:44,723 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:35:44,723 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:35:44,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-21 19:35:44,755 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:35:44,755 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:35:44,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:44,801 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:44,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:44,803 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:44,810 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:35:44,810 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:35:44,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-21 19:35:44,842 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:35:44,842 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: [] [2021-10-21 19:35:44,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:44,887 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:44,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:44,889 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:44,899 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:35:44,899 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:35:44,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-21 19:35:44,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:44,973 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:44,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:44,975 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:44,982 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 19:35:44,982 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:35:44,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-21 19:35:45,011 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 19:35:45,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:45,058 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:35:45,058 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:35:45,058 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:35:45,058 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:35:45,058 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 19:35:45,058 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:45,059 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:35:45,059 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:35:45,059 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration2_Loop [2021-10-21 19:35:45,059 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:35:45,059 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:35:45,061 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:45,071 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:45,077 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:45,082 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:45,177 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:35:45,182 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 19:35:45,183 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:45,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:45,184 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:45,191 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:35:45,201 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:35:45,202 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:35:45,202 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:35:45,202 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:35:45,208 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 19:35:45,209 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 19:35:45,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-21 19:35:45,230 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:35:45,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:45,270 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:45,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:45,271 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:45,278 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:35:45,288 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:35:45,288 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:35:45,288 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:35:45,288 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:35:45,292 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 19:35:45,293 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 19:35:45,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-21 19:35:45,321 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:35:45,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:45,366 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:45,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:45,369 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:45,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-21 19:35:45,374 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:35:45,385 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:35:45,385 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:35:45,386 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:35:45,386 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:35:45,386 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:35:45,388 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:35:45,389 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:35:45,401 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:35:45,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:45,432 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:45,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:45,434 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:45,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-21 19:35:45,441 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:35:45,448 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:35:45,449 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:35:45,449 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:35:45,449 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:35:45,449 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:35:45,452 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:35:45,452 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:35:45,466 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 19:35:45,473 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-21 19:35:45,473 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-21 19:35:45,474 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:45,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:45,481 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:45,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-21 19:35:45,489 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 19:35:45,490 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 19:35:45,490 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 19:35:45,490 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-21 19:35:45,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:45,518 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 19:35:45,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:45,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:45,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:35:45,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:35:45,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:45,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:35:45,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:35:45,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:35:45,660 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 [2021-10-21 19:35:45,661 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 14 transitions. cyclomatic complexity: 6 Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:35:45,717 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 14 transitions. cyclomatic complexity: 6. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 24 states and 37 transitions. Complement of second has 7 states. [2021-10-21 19:35:45,718 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 [2021-10-21 19:35:45,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:35:45,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2021-10-21 19:35:45,721 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 1 letters. Loop has 4 letters. [2021-10-21 19:35:45,722 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:35:45,722 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 5 letters. Loop has 4 letters. [2021-10-21 19:35:45,723 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:35:45,723 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 1 letters. Loop has 8 letters. [2021-10-21 19:35:45,723 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:35:45,723 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 37 transitions. [2021-10-21 19:35:45,725 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2021-10-21 19:35:45,727 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 24 states and 37 transitions. [2021-10-21 19:35:45,727 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2021-10-21 19:35:45,727 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-10-21 19:35:45,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 37 transitions. [2021-10-21 19:35:45,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:35:45,728 INFO L681 BuchiCegarLoop]: Abstraction has 24 states and 37 transitions. [2021-10-21 19:35:45,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 37 transitions. [2021-10-21 19:35:45,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2021-10-21 19:35:45,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:35:45,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 35 transitions. [2021-10-21 19:35:45,733 INFO L704 BuchiCegarLoop]: Abstraction has 23 states and 35 transitions. [2021-10-21 19:35:45,733 INFO L587 BuchiCegarLoop]: Abstraction has 23 states and 35 transitions. [2021-10-21 19:35:45,733 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-21 19:35:45,733 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 35 transitions. [2021-10-21 19:35:45,734 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2021-10-21 19:35:45,735 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:35:45,735 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:35:45,735 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-21 19:35:45,735 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-21 19:35:45,735 INFO L791 eck$LassoCheckResult]: Stem: 115#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 116#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 112#L12 [2021-10-21 19:35:45,736 INFO L793 eck$LassoCheckResult]: Loop: 112#L12 assume !(10 == main_~i~0); 119#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 122#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 111#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 112#L12 [2021-10-21 19:35:45,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:45,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2021-10-21 19:35:45,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:35:45,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030926657] [2021-10-21 19:35:45,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:45,737 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:35:45,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:35:45,743 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:35:45,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:35:45,748 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:35:45,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:45,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1389492, now seen corresponding path program 1 times [2021-10-21 19:35:45,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:35:45,749 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166917769] [2021-10-21 19:35:45,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:45,750 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:35:45,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:45,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:35:45,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:35:45,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166917769] [2021-10-21 19:35:45,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166917769] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:35:45,771 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:35:45,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:35:45,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175065003] [2021-10-21 19:35:45,772 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:35:45,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:35:45,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:35:45,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:35:45,773 INFO L87 Difference]: Start difference. First operand 23 states and 35 transitions. cyclomatic complexity: 15 Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:35:45,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:35:45,785 INFO L93 Difference]: Finished difference Result 31 states and 44 transitions. [2021-10-21 19:35:45,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:35:45,786 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 44 transitions. [2021-10-21 19:35:45,788 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 18 [2021-10-21 19:35:45,789 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 30 states and 43 transitions. [2021-10-21 19:35:45,789 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2021-10-21 19:35:45,790 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2021-10-21 19:35:45,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 43 transitions. [2021-10-21 19:35:45,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:35:45,790 INFO L681 BuchiCegarLoop]: Abstraction has 30 states and 43 transitions. [2021-10-21 19:35:45,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states and 43 transitions. [2021-10-21 19:35:45,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2021-10-21 19:35:45,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 26 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:35:45,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 40 transitions. [2021-10-21 19:35:45,796 INFO L704 BuchiCegarLoop]: Abstraction has 27 states and 40 transitions. [2021-10-21 19:35:45,796 INFO L587 BuchiCegarLoop]: Abstraction has 27 states and 40 transitions. [2021-10-21 19:35:45,796 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-21 19:35:45,796 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 40 transitions. [2021-10-21 19:35:45,798 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 18 [2021-10-21 19:35:45,798 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:35:45,798 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:35:45,798 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-21 19:35:45,799 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-21 19:35:45,799 INFO L791 eck$LassoCheckResult]: Stem: 171#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; 172#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 179#L12 [2021-10-21 19:35:45,799 INFO L793 eck$LassoCheckResult]: Loop: 179#L12 assume !(10 == main_~i~0); 180#L12-2 assume !(0 == main_~i~0); 188#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 187#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 179#L12 [2021-10-21 19:35:45,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:45,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 2 times [2021-10-21 19:35:45,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:35:45,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589807871] [2021-10-21 19:35:45,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:45,801 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:35:45,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:35:45,806 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:35:45,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:35:45,810 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:35:45,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:45,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1391414, now seen corresponding path program 1 times [2021-10-21 19:35:45,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:35:45,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140539178] [2021-10-21 19:35:45,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:45,812 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:35:45,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:35:45,818 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:35:45,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:35:45,824 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:35:45,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:45,824 INFO L82 PathProgramCache]: Analyzing trace with hash 925835935, now seen corresponding path program 1 times [2021-10-21 19:35:45,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:35:45,825 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412219288] [2021-10-21 19:35:45,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:45,825 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:35:45,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:35:45,832 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:35:45,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:35:45,839 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:35:45,911 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:35:45,912 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:35:45,912 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:35:45,912 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:35:45,912 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 19:35:45,912 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:45,912 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:35:45,913 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:35:45,913 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration4_Loop [2021-10-21 19:35:45,913 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:35:45,913 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:35:45,915 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:45,954 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:45,965 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:45,968 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:46,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:46,096 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:35:46,096 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 19:35:46,097 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:46,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:46,098 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:46,107 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:35:46,107 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:35:46,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-21 19:35:46,143 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:35:46,143 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:35:46,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:46,186 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:46,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:46,187 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:46,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-21 19:35:46,190 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:35:46,190 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:35:46,222 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:35:46,222 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:35:46,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:46,266 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:46,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:46,268 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:46,278 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:35:46,278 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:35:46,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-21 19:35:46,302 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:35:46,302 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=4} Honda state: {ULTIMATE.start_main_~up~0=4} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:35:46,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:46,329 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:46,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:46,330 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:46,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-21 19:35:46,334 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:35:46,334 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:35:46,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:46,383 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:46,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:46,384 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:46,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-21 19:35:46,389 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 19:35:46,389 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:35:46,533 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 19:35:46,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:46,536 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:35:46,536 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:35:46,536 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:35:46,536 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:35:46,536 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 19:35:46,536 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:46,536 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:35:46,536 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:35:46,536 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration4_Loop [2021-10-21 19:35:46,536 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:35:46,536 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:35:46,538 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:46,542 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:46,546 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:46,549 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:46,676 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:35:46,676 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 19:35:46,676 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:46,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:46,678 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:46,695 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:35:46,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-21 19:35:46,705 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:35:46,706 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:35:46,706 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:35:46,706 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:35:46,709 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 19:35:46,710 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 19:35:46,725 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:35:46,757 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2021-10-21 19:35:46,757 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:46,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:46,758 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:46,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-10-21 19:35:46,760 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:35:46,769 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:35:46,769 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:35:46,769 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:35:46,769 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-21 19:35:46,769 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:35:46,773 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-21 19:35:46,773 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:35:46,805 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:35:46,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:46,847 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:46,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:46,850 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:46,863 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:35:46,874 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:35:46,874 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:35:46,874 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:35:46,874 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:35:46,887 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 19:35:46,887 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 19:35:46,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-10-21 19:35:46,908 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:35:46,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:46,936 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:46,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:46,937 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:46,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-10-21 19:35:46,940 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:35:46,951 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:35:46,951 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:35:46,951 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:35:46,951 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-21 19:35:46,951 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:35:46,954 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-21 19:35:46,954 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:35:46,960 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 19:35:46,965 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-21 19:35:46,965 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-21 19:35:46,965 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:46,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:46,967 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:46,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-10-21 19:35:46,971 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 19:35:46,972 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 19:35:46,972 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 19:35:46,972 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-21 19:35:46,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:46,996 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 19:35:47,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:47,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:47,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:35:47,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:35:47,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:47,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:35:47,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:35:47,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:35:47,108 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 [2021-10-21 19:35:47,109 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 40 transitions. cyclomatic complexity: 16 Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:35:47,157 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 40 transitions. cyclomatic complexity: 16. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 43 states and 59 transitions. Complement of second has 7 states. [2021-10-21 19:35:47,159 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 [2021-10-21 19:35:47,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:35:47,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2021-10-21 19:35:47,161 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 4 letters. [2021-10-21 19:35:47,162 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:35:47,162 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 4 letters. [2021-10-21 19:35:47,162 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:35:47,162 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 8 letters. [2021-10-21 19:35:47,163 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:35:47,163 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 59 transitions. [2021-10-21 19:35:47,168 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2021-10-21 19:35:47,176 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 33 states and 48 transitions. [2021-10-21 19:35:47,179 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2021-10-21 19:35:47,180 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 22 [2021-10-21 19:35:47,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 48 transitions. [2021-10-21 19:35:47,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:35:47,180 INFO L681 BuchiCegarLoop]: Abstraction has 33 states and 48 transitions. [2021-10-21 19:35:47,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states and 48 transitions. [2021-10-21 19:35:47,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2021-10-21 19:35:47,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 28 states have (on average 1.5) internal successors, (42), 27 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:35:47,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 42 transitions. [2021-10-21 19:35:47,189 INFO L704 BuchiCegarLoop]: Abstraction has 28 states and 42 transitions. [2021-10-21 19:35:47,189 INFO L587 BuchiCegarLoop]: Abstraction has 28 states and 42 transitions. [2021-10-21 19:35:47,189 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-21 19:35:47,190 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 42 transitions. [2021-10-21 19:35:47,191 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2021-10-21 19:35:47,194 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:35:47,194 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:35:47,194 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-21 19:35:47,195 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-21 19:35:47,195 INFO L791 eck$LassoCheckResult]: Stem: 287#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; 288#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 296#L12 assume 10 == main_~i~0;main_~up~0 := 0; 279#L12-2 [2021-10-21 19:35:47,195 INFO L793 eck$LassoCheckResult]: Loop: 279#L12-2 assume !(0 == main_~i~0); 280#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 283#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 284#L12 assume !(10 == main_~i~0); 279#L12-2 [2021-10-21 19:35:47,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:47,196 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2021-10-21 19:35:47,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:35:47,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308572068] [2021-10-21 19:35:47,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:47,202 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:35:47,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:35:47,207 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:35:47,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:35:47,211 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:35:47,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:47,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1573482, now seen corresponding path program 1 times [2021-10-21 19:35:47,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:35:47,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410836182] [2021-10-21 19:35:47,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:47,213 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:35:47,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:35:47,218 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:35:47,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:35:47,223 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:35:47,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:47,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1365706036, now seen corresponding path program 1 times [2021-10-21 19:35:47,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:35:47,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631188168] [2021-10-21 19:35:47,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:47,224 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:35:47,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:47,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:35:47,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:35:47,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631188168] [2021-10-21 19:35:47,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631188168] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:35:47,245 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:35:47,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:35:47,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931815042] [2021-10-21 19:35:47,288 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:35:47,288 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:35:47,288 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:35:47,288 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:35:47,288 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 19:35:47,288 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:47,288 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:35:47,289 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:35:47,289 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration5_Loop [2021-10-21 19:35:47,289 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:35:47,289 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:35:47,290 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:47,296 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:47,299 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:47,321 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:47,444 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:35:47,444 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 19:35:47,444 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:47,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:47,446 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:47,460 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:35:47,460 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:35:47,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-10-21 19:35:47,486 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:35:47,486 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: [] [2021-10-21 19:35:47,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:47,518 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:47,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:47,546 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:47,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-10-21 19:35:47,582 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:35:47,582 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:35:47,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:47,626 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:35:47,626 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:35:47,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:47,670 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:47,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:47,672 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:47,674 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:35:47,674 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:35:47,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-10-21 19:35:47,737 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2021-10-21 19:35:47,737 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:47,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:47,739 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:47,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-10-21 19:35:47,740 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 19:35:47,740 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:35:47,888 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 19:35:47,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:47,891 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:35:47,891 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:35:47,892 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:35:47,892 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:35:47,892 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 19:35:47,892 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:47,892 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:35:47,892 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:35:47,892 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration5_Loop [2021-10-21 19:35:47,892 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:35:47,892 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:35:47,893 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:47,903 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:47,916 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:47,920 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:48,063 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:35:48,064 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 19:35:48,064 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:48,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:48,066 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:48,075 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:35:48,088 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:35:48,088 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:35:48,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-10-21 19:35:48,089 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:35:48,089 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:35:48,089 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:35:48,090 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:35:48,090 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:35:48,105 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:35:48,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:48,149 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:48,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:48,151 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:48,153 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:35:48,164 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:35:48,164 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:35:48,164 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:35:48,164 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-21 19:35:48,164 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:35:48,168 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-21 19:35:48,168 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:35:48,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-10-21 19:35:48,185 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 19:35:48,190 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-21 19:35:48,190 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-21 19:35:48,190 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:48,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:48,192 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:48,199 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 19:35:48,200 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 19:35:48,200 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 19:35:48,200 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 17 Supporting invariants [] [2021-10-21 19:35:48,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-10-21 19:35:48,232 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2021-10-21 19:35:48,233 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 19:35:48,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:48,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:48,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:35:48,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:35:48,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:48,286 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 19:35:48,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:35:48,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:35:48,361 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 [2021-10-21 19:35:48,362 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 42 transitions. cyclomatic complexity: 17 Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:35:48,457 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 28 states and 42 transitions. cyclomatic complexity: 17. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 78 states and 116 transitions. Complement of second has 9 states. [2021-10-21 19:35:48,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-10-21 19:35:48,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:35:48,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 22 transitions. [2021-10-21 19:35:48,460 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 3 letters. Loop has 4 letters. [2021-10-21 19:35:48,460 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:35:48,460 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 7 letters. Loop has 4 letters. [2021-10-21 19:35:48,461 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:35:48,461 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 3 letters. Loop has 8 letters. [2021-10-21 19:35:48,461 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:35:48,461 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 78 states and 116 transitions. [2021-10-21 19:35:48,465 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 31 [2021-10-21 19:35:48,467 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 78 states to 77 states and 115 transitions. [2021-10-21 19:35:48,467 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 37 [2021-10-21 19:35:48,468 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2021-10-21 19:35:48,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 77 states and 115 transitions. [2021-10-21 19:35:48,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:35:48,468 INFO L681 BuchiCegarLoop]: Abstraction has 77 states and 115 transitions. [2021-10-21 19:35:48,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states and 115 transitions. [2021-10-21 19:35:48,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 63. [2021-10-21 19:35:48,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 63 states have (on average 1.5555555555555556) internal successors, (98), 62 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:35:48,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 98 transitions. [2021-10-21 19:35:48,476 INFO L704 BuchiCegarLoop]: Abstraction has 63 states and 98 transitions. [2021-10-21 19:35:48,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:35:48,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:35:48,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:35:48,477 INFO L87 Difference]: Start difference. First operand 63 states and 98 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:35:48,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:35:48,483 INFO L93 Difference]: Finished difference Result 44 states and 60 transitions. [2021-10-21 19:35:48,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:35:48,485 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 60 transitions. [2021-10-21 19:35:48,486 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 14 [2021-10-21 19:35:48,486 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 37 states and 50 transitions. [2021-10-21 19:35:48,486 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2021-10-21 19:35:48,487 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 22 [2021-10-21 19:35:48,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 50 transitions. [2021-10-21 19:35:48,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:35:48,487 INFO L681 BuchiCegarLoop]: Abstraction has 37 states and 50 transitions. [2021-10-21 19:35:48,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 50 transitions. [2021-10-21 19:35:48,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 24. [2021-10-21 19:35:48,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 24 states have (on average 1.375) internal successors, (33), 23 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:35:48,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 33 transitions. [2021-10-21 19:35:48,489 INFO L704 BuchiCegarLoop]: Abstraction has 24 states and 33 transitions. [2021-10-21 19:35:48,489 INFO L587 BuchiCegarLoop]: Abstraction has 24 states and 33 transitions. [2021-10-21 19:35:48,489 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-21 19:35:48,489 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 33 transitions. [2021-10-21 19:35:48,490 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-10-21 19:35:48,490 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:35:48,490 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:35:48,490 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-21 19:35:48,490 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-21 19:35:48,491 INFO L791 eck$LassoCheckResult]: Stem: 550#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; 551#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 554#L12 assume !(10 == main_~i~0); 553#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 559#L15-1 [2021-10-21 19:35:48,491 INFO L793 eck$LassoCheckResult]: Loop: 559#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 560#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 565#L12 assume !(10 == main_~i~0); 564#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 559#L15-1 [2021-10-21 19:35:48,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:48,491 INFO L82 PathProgramCache]: Analyzing trace with hash 963406, now seen corresponding path program 1 times [2021-10-21 19:35:48,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:35:48,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162017539] [2021-10-21 19:35:48,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:48,492 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:35:48,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:35:48,497 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:35:48,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:35:48,501 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:35:48,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:48,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1678390, now seen corresponding path program 1 times [2021-10-21 19:35:48,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:35:48,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192751969] [2021-10-21 19:35:48,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:48,502 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:35:48,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:35:48,507 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:35:48,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:35:48,512 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:35:48,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:48,512 INFO L82 PathProgramCache]: Analyzing trace with hash 668197123, now seen corresponding path program 1 times [2021-10-21 19:35:48,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:35:48,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915852985] [2021-10-21 19:35:48,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:48,513 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:35:48,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:48,540 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:35:48,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:35:48,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915852985] [2021-10-21 19:35:48,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915852985] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:35:48,541 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:35:48,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:35:48,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989829429] [2021-10-21 19:35:48,570 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:35:48,570 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:35:48,571 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:35:48,571 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:35:48,571 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 19:35:48,571 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:48,571 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:35:48,571 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:35:48,571 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration6_Loop [2021-10-21 19:35:48,571 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:35:48,571 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:35:48,573 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:48,578 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:48,580 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:48,582 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:48,631 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:35:48,632 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 19:35:48,632 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:48,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:48,633 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:48,635 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:35:48,635 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:35:48,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-10-21 19:35:48,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:48,694 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:48,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:48,698 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:48,700 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 19:35:48,700 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:35:48,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-10-21 19:35:48,790 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 19:35:48,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:48,797 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:35:48,797 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:35:48,797 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:35:48,797 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:35:48,797 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 19:35:48,797 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:48,797 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:35:48,797 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:35:48,797 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration6_Loop [2021-10-21 19:35:48,797 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:35:48,797 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:35:48,799 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:48,804 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:48,807 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:48,811 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:48,868 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:35:48,869 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 19:35:48,869 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:48,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:48,870 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:48,872 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:35:48,882 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:35:48,882 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:35:48,882 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:35:48,882 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:35:48,882 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:35:48,883 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:35:48,883 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:35:48,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-10-21 19:35:48,893 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 19:35:48,902 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-21 19:35:48,902 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-21 19:35:48,902 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:48,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:48,904 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:48,906 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 19:35:48,906 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 19:35:48,906 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 19:35:48,906 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-21 19:35:48,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-10-21 19:35:48,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:48,935 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 19:35:48,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:48,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:48,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:35:48,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:35:48,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:48,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:35:48,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:35:49,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:35:49,031 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 [2021-10-21 19:35:49,031 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 33 transitions. cyclomatic complexity: 12 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:35:49,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:49,129 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 33 transitions. cyclomatic complexity: 12. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 51 states and 68 transitions. Complement of second has 7 states. [2021-10-21 19:35:49,130 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 [2021-10-21 19:35:49,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:35:49,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2021-10-21 19:35:49,131 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 4 letters. Loop has 4 letters. [2021-10-21 19:35:49,131 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:35:49,132 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 8 letters. Loop has 4 letters. [2021-10-21 19:35:49,132 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:35:49,133 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 4 letters. Loop has 8 letters. [2021-10-21 19:35:49,133 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:35:49,134 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 68 transitions. [2021-10-21 19:35:49,148 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 19 [2021-10-21 19:35:49,151 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 49 states and 65 transitions. [2021-10-21 19:35:49,152 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2021-10-21 19:35:49,152 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2021-10-21 19:35:49,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 65 transitions. [2021-10-21 19:35:49,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:35:49,153 INFO L681 BuchiCegarLoop]: Abstraction has 49 states and 65 transitions. [2021-10-21 19:35:49,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 65 transitions. [2021-10-21 19:35:49,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 44. [2021-10-21 19:35:49,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 44 states have (on average 1.3636363636363635) internal successors, (60), 43 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:35:49,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 60 transitions. [2021-10-21 19:35:49,172 INFO L704 BuchiCegarLoop]: Abstraction has 44 states and 60 transitions. [2021-10-21 19:35:49,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:35:49,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:35:49,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:35:49,174 INFO L87 Difference]: Start difference. First operand 44 states and 60 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:35:49,185 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2021-10-21 19:35:49,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:35:49,202 INFO L93 Difference]: Finished difference Result 46 states and 59 transitions. [2021-10-21 19:35:49,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:35:49,203 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 59 transitions. [2021-10-21 19:35:49,204 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-10-21 19:35:49,205 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 36 states and 47 transitions. [2021-10-21 19:35:49,205 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2021-10-21 19:35:49,208 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2021-10-21 19:35:49,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 47 transitions. [2021-10-21 19:35:49,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:35:49,208 INFO L681 BuchiCegarLoop]: Abstraction has 36 states and 47 transitions. [2021-10-21 19:35:49,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 47 transitions. [2021-10-21 19:35:49,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 24. [2021-10-21 19:35:49,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:35:49,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 32 transitions. [2021-10-21 19:35:49,216 INFO L704 BuchiCegarLoop]: Abstraction has 24 states and 32 transitions. [2021-10-21 19:35:49,216 INFO L587 BuchiCegarLoop]: Abstraction has 24 states and 32 transitions. [2021-10-21 19:35:49,216 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-10-21 19:35:49,216 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 32 transitions. [2021-10-21 19:35:49,216 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-10-21 19:35:49,217 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:35:49,217 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:35:49,217 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-21 19:35:49,217 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-21 19:35:49,218 INFO L791 eck$LassoCheckResult]: Stem: 761#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; 762#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 774#L12 assume !(10 == main_~i~0); 772#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 758#L15-1 [2021-10-21 19:35:49,218 INFO L793 eck$LassoCheckResult]: Loop: 758#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 779#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 769#L12 assume !(10 == main_~i~0); 757#L12-2 assume !(0 == main_~i~0); 758#L15-1 [2021-10-21 19:35:49,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:49,219 INFO L82 PathProgramCache]: Analyzing trace with hash 963406, now seen corresponding path program 2 times [2021-10-21 19:35:49,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:35:49,219 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951020081] [2021-10-21 19:35:49,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:49,219 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:35:49,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:35:49,236 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:35:49,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:35:49,250 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:35:49,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:49,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1678392, now seen corresponding path program 2 times [2021-10-21 19:35:49,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:35:49,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603399680] [2021-10-21 19:35:49,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:49,255 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:35:49,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:35:49,260 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:35:49,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:35:49,264 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:35:49,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:49,265 INFO L82 PathProgramCache]: Analyzing trace with hash 668197125, now seen corresponding path program 1 times [2021-10-21 19:35:49,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:35:49,265 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195214324] [2021-10-21 19:35:49,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:49,266 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:35:49,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:35:49,272 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:35:49,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:35:49,277 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:35:49,314 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:35:49,314 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:35:49,314 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:35:49,314 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:35:49,314 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 19:35:49,315 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:49,315 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:35:49,315 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:35:49,315 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration7_Loop [2021-10-21 19:35:49,315 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:35:49,315 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:35:49,317 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:49,320 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:49,323 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:49,326 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:49,404 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:35:49,404 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 19:35:49,405 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:49,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:49,410 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:49,412 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:35:49,412 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:35:49,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-10-21 19:35:49,431 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:35:49,431 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: [] [2021-10-21 19:35:49,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:49,455 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:49,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:49,455 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:49,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-10-21 19:35:49,457 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:35:49,457 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:35:49,471 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:35:49,471 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: [] [2021-10-21 19:35:49,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:49,494 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:49,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:49,496 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:49,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-10-21 19:35:49,498 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:35:49,498 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:35:49,513 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:35:49,513 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: [] [2021-10-21 19:35:49,535 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2021-10-21 19:35:49,536 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:49,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:49,537 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:49,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-10-21 19:35:49,539 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:35:49,539 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:35:49,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:49,596 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:49,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:49,597 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:49,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-10-21 19:35:49,610 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 19:35:49,610 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:35:49,740 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 19:35:49,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:49,743 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:35:49,743 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:35:49,743 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:35:49,743 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:35:49,743 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 19:35:49,744 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:49,744 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:35:49,744 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:35:49,744 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration7_Loop [2021-10-21 19:35:49,744 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:35:49,744 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:35:49,745 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:49,749 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:49,751 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:49,754 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:49,865 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:35:49,866 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 19:35:49,866 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:49,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:49,867 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:49,878 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:35:49,889 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:35:49,889 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:35:49,889 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:35:49,889 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:35:49,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-10-21 19:35:49,892 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 19:35:49,892 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 19:35:49,906 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:35:49,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:49,934 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:49,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:49,935 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:49,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2021-10-21 19:35:49,936 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:35:49,947 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:35:49,947 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:35:49,947 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:35:49,948 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:35:49,948 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:35:49,949 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:35:49,949 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:35:49,965 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:35:50,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:50,006 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:50,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:50,010 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:50,018 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:35:50,029 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:35:50,029 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:35:50,029 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:35:50,029 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:35:50,032 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 19:35:50,032 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 19:35:50,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-10-21 19:35:50,043 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:35:50,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:50,067 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:50,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:50,068 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:50,079 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:35:50,090 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:35:50,090 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:35:50,090 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:35:50,090 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:35:50,090 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:35:50,092 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:35:50,092 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:35:50,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-10-21 19:35:50,109 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 19:35:50,112 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-21 19:35:50,113 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-21 19:35:50,113 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:50,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:50,114 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:50,116 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 19:35:50,116 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 19:35:50,116 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 19:35:50,116 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 17 Supporting invariants [] [2021-10-21 19:35:50,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-10-21 19:35:50,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:50,158 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 19:35:50,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:50,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:50,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:35:50,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:35:50,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:50,191 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 19:35:50,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:35:50,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:35:50,276 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 [2021-10-21 19:35:50,276 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 32 transitions. cyclomatic complexity: 11 Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:35:50,326 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 32 transitions. cyclomatic complexity: 11. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 48 states and 62 transitions. Complement of second has 9 states. [2021-10-21 19:35:50,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-10-21 19:35:50,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:35:50,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 20 transitions. [2021-10-21 19:35:50,327 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 4 letters. Loop has 4 letters. [2021-10-21 19:35:50,327 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:35:50,327 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 8 letters. Loop has 4 letters. [2021-10-21 19:35:50,328 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:35:50,328 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 4 letters. Loop has 8 letters. [2021-10-21 19:35:50,328 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:35:50,328 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 62 transitions. [2021-10-21 19:35:50,329 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 17 [2021-10-21 19:35:50,329 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 46 states and 59 transitions. [2021-10-21 19:35:50,330 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2021-10-21 19:35:50,330 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2021-10-21 19:35:50,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 59 transitions. [2021-10-21 19:35:50,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:35:50,330 INFO L681 BuchiCegarLoop]: Abstraction has 46 states and 59 transitions. [2021-10-21 19:35:50,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states and 59 transitions. [2021-10-21 19:35:50,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2021-10-21 19:35:50,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 42 states have (on average 1.3095238095238095) internal successors, (55), 41 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:35:50,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 55 transitions. [2021-10-21 19:35:50,334 INFO L704 BuchiCegarLoop]: Abstraction has 42 states and 55 transitions. [2021-10-21 19:35:50,334 INFO L587 BuchiCegarLoop]: Abstraction has 42 states and 55 transitions. [2021-10-21 19:35:50,334 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-10-21 19:35:50,334 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 42 states and 55 transitions. [2021-10-21 19:35:50,335 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 17 [2021-10-21 19:35:50,335 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:35:50,335 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:35:50,335 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-10-21 19:35:50,335 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2021-10-21 19:35:50,336 INFO L791 eck$LassoCheckResult]: Stem: 890#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; 891#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 897#L12 assume !(10 == main_~i~0); 902#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 898#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 886#L18-1 [2021-10-21 19:35:50,336 INFO L793 eck$LassoCheckResult]: Loop: 886#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 887#L12 assume 10 == main_~i~0;main_~up~0 := 0; 895#L12-2 assume !(0 == main_~i~0); 892#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 893#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 922#L12 assume !(10 == main_~i~0); 917#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 905#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 886#L18-1 [2021-10-21 19:35:50,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:50,336 INFO L82 PathProgramCache]: Analyzing trace with hash 29865611, now seen corresponding path program 2 times [2021-10-21 19:35:50,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:35:50,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087149065] [2021-10-21 19:35:50,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:50,337 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:35:50,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:35:50,341 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:35:50,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:35:50,345 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:35:50,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:50,346 INFO L82 PathProgramCache]: Analyzing trace with hash 2014853141, now seen corresponding path program 1 times [2021-10-21 19:35:50,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:35:50,346 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356194793] [2021-10-21 19:35:50,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:50,346 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:35:50,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:50,369 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:35:50,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:35:50,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356194793] [2021-10-21 19:35:50,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356194793] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:35:50,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933168800] [2021-10-21 19:35:50,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:50,370 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:35:50,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:50,371 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:35:50,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-10-21 19:35:50,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:50,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-21 19:35:50,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:35:50,449 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:35:50,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933168800] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:35:50,449 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:35:50,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-10-21 19:35:50,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602838411] [2021-10-21 19:35:50,450 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:35:50,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:35:50,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:35:50,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:35:50,451 INFO L87 Difference]: Start difference. First operand 42 states and 55 transitions. cyclomatic complexity: 18 Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:35:50,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:35:50,477 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2021-10-21 19:35:50,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:35:50,482 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 54 states and 67 transitions. [2021-10-21 19:35:50,483 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2021-10-21 19:35:50,483 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 54 states to 48 states and 61 transitions. [2021-10-21 19:35:50,484 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2021-10-21 19:35:50,484 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2021-10-21 19:35:50,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 61 transitions. [2021-10-21 19:35:50,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:35:50,484 INFO L681 BuchiCegarLoop]: Abstraction has 48 states and 61 transitions. [2021-10-21 19:35:50,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states and 61 transitions. [2021-10-21 19:35:50,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 37. [2021-10-21 19:35:50,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 36 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:35:50,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2021-10-21 19:35:50,493 INFO L704 BuchiCegarLoop]: Abstraction has 37 states and 48 transitions. [2021-10-21 19:35:50,493 INFO L587 BuchiCegarLoop]: Abstraction has 37 states and 48 transitions. [2021-10-21 19:35:50,493 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-10-21 19:35:50,493 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 37 states and 48 transitions. [2021-10-21 19:35:50,494 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2021-10-21 19:35:50,494 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:35:50,495 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:35:50,495 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2021-10-21 19:35:50,495 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-21 19:35:50,496 INFO L791 eck$LassoCheckResult]: Stem: 1014#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 1015#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 1027#L12 assume !(10 == main_~i~0); 1024#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 1021#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1010#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 1011#L12 assume 10 == main_~i~0;main_~up~0 := 0; 1019#L12-2 [2021-10-21 19:35:50,496 INFO L793 eck$LassoCheckResult]: Loop: 1019#L12-2 assume !(0 == main_~i~0); 1016#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1017#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 1042#L12 assume 10 == main_~i~0;main_~up~0 := 0; 1019#L12-2 [2021-10-21 19:35:50,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:50,496 INFO L82 PathProgramCache]: Analyzing trace with hash -1363918578, now seen corresponding path program 1 times [2021-10-21 19:35:50,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:35:50,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593395923] [2021-10-21 19:35:50,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:50,497 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:35:50,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:50,540 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:35:50,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:35:50,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593395923] [2021-10-21 19:35:50,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593395923] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:35:50,541 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:35:50,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:35:50,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334933126] [2021-10-21 19:35:50,541 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:35:50,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:50,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1575402, now seen corresponding path program 2 times [2021-10-21 19:35:50,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:35:50,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220280462] [2021-10-21 19:35:50,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:50,543 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:35:50,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:35:50,556 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:35:50,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:35:50,566 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:35:50,595 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:35:50,595 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:35:50,595 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:35:50,596 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:35:50,596 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 19:35:50,596 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:50,596 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:35:50,596 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:35:50,596 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration9_Loop [2021-10-21 19:35:50,597 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:35:50,597 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:35:50,598 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:50,601 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:50,603 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:50,608 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:50,671 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:35:50,671 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 19:35:50,672 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:50,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:50,695 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:50,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:50,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-10-21 19:35:50,697 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:35:50,697 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:35:50,710 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:35:50,711 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: [] [2021-10-21 19:35:50,731 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Ended with exit code 0 [2021-10-21 19:35:50,731 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:50,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:50,732 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:50,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2021-10-21 19:35:50,734 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:35:50,734 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:35:50,747 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:35:50,747 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: [] [2021-10-21 19:35:50,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:50,769 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:50,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:50,770 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:50,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-10-21 19:35:50,774 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:35:50,774 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:35:50,787 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:35:50,787 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: [] [2021-10-21 19:35:50,808 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Ended with exit code 0 [2021-10-21 19:35:50,808 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:50,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:50,809 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:50,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-10-21 19:35:50,811 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:35:50,811 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:35:50,845 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Ended with exit code 0 [2021-10-21 19:35:50,846 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:50,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:50,847 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:50,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-10-21 19:35:50,848 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 19:35:50,848 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:35:50,959 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 19:35:50,961 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Ended with exit code 0 [2021-10-21 19:35:50,961 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:35:50,961 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:35:50,961 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:35:50,961 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:35:50,961 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 19:35:50,961 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:50,961 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:35:50,962 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:35:50,962 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration9_Loop [2021-10-21 19:35:50,962 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:35:50,962 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:35:50,962 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:50,972 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:50,976 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:50,979 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:51,031 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:35:51,032 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 19:35:51,032 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:51,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:51,033 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:51,042 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:35:51,052 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:35:51,052 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:35:51,052 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:35:51,053 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:35:51,055 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 19:35:51,055 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 19:35:51,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-10-21 19:35:51,071 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:35:51,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:51,105 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:51,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:51,107 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:51,109 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:35:51,118 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:35:51,118 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:35:51,118 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:35:51,119 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-21 19:35:51,119 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:35:51,120 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-21 19:35:51,120 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:35:51,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2021-10-21 19:35:51,137 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:35:51,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:51,172 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:51,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:51,173 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:51,175 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:35:51,185 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:35:51,185 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:35:51,185 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:35:51,185 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:35:51,187 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 19:35:51,188 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 19:35:51,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2021-10-21 19:35:51,201 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:35:51,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:51,236 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:51,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:51,237 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:51,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2021-10-21 19:35:51,241 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:35:51,250 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:35:51,250 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:35:51,251 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:35:51,251 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:35:51,251 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:35:51,253 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:35:51,253 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:35:51,269 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 19:35:51,274 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-21 19:35:51,274 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-21 19:35:51,274 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:51,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:51,278 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:51,282 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 19:35:51,282 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 19:35:51,282 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 19:35:51,283 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-21 19:35:51,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2021-10-21 19:35:51,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:51,319 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 19:35:51,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:51,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:51,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:35:51,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:35:51,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:51,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:35:51,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:35:51,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:35:51,390 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 [2021-10-21 19:35:51,391 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 37 states and 48 transitions. cyclomatic complexity: 15 Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:35:51,425 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 37 states and 48 transitions. cyclomatic complexity: 15. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 86 states and 109 transitions. Complement of second has 7 states. [2021-10-21 19:35:51,426 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 [2021-10-21 19:35:51,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:35:51,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2021-10-21 19:35:51,427 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 4 letters. [2021-10-21 19:35:51,427 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:35:51,427 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 11 letters. Loop has 4 letters. [2021-10-21 19:35:51,428 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:35:51,428 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 8 letters. [2021-10-21 19:35:51,428 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:35:51,429 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 86 states and 109 transitions. [2021-10-21 19:35:51,430 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2021-10-21 19:35:51,431 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 86 states to 67 states and 85 transitions. [2021-10-21 19:35:51,431 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2021-10-21 19:35:51,432 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 30 [2021-10-21 19:35:51,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 67 states and 85 transitions. [2021-10-21 19:35:51,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:35:51,432 INFO L681 BuchiCegarLoop]: Abstraction has 67 states and 85 transitions. [2021-10-21 19:35:51,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states and 85 transitions. [2021-10-21 19:35:51,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 60. [2021-10-21 19:35:51,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 60 states have (on average 1.2833333333333334) internal successors, (77), 59 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:35:51,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 77 transitions. [2021-10-21 19:35:51,437 INFO L704 BuchiCegarLoop]: Abstraction has 60 states and 77 transitions. [2021-10-21 19:35:51,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:35:51,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:35:51,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:35:51,438 INFO L87 Difference]: Start difference. First operand 60 states and 77 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:35:51,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:35:51,458 INFO L93 Difference]: Finished difference Result 79 states and 96 transitions. [2021-10-21 19:35:51,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:35:51,459 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 79 states and 96 transitions. [2021-10-21 19:35:51,460 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 18 [2021-10-21 19:35:51,461 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 79 states to 75 states and 92 transitions. [2021-10-21 19:35:51,461 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2021-10-21 19:35:51,462 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2021-10-21 19:35:51,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 75 states and 92 transitions. [2021-10-21 19:35:51,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:35:51,462 INFO L681 BuchiCegarLoop]: Abstraction has 75 states and 92 transitions. [2021-10-21 19:35:51,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states and 92 transitions. [2021-10-21 19:35:51,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 63. [2021-10-21 19:35:51,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 63 states have (on average 1.2380952380952381) internal successors, (78), 62 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:35:51,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 78 transitions. [2021-10-21 19:35:51,466 INFO L704 BuchiCegarLoop]: Abstraction has 63 states and 78 transitions. [2021-10-21 19:35:51,467 INFO L587 BuchiCegarLoop]: Abstraction has 63 states and 78 transitions. [2021-10-21 19:35:51,467 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-10-21 19:35:51,467 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 63 states and 78 transitions. [2021-10-21 19:35:51,468 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-10-21 19:35:51,468 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:35:51,468 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:35:51,469 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 3, 3, 2, 2, 2, 1, 1] [2021-10-21 19:35:51,469 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-21 19:35:51,469 INFO L791 eck$LassoCheckResult]: Stem: 1334#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; 1335#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 1355#L12 assume 10 == main_~i~0;main_~up~0 := 0; 1366#L12-2 assume !(0 == main_~i~0); 1365#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1364#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 1363#L12 assume !(10 == main_~i~0); 1353#L12-2 assume !(0 == main_~i~0); 1360#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1361#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 1352#L12 assume !(10 == main_~i~0); 1354#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 1336#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1337#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 1386#L12 assume !(10 == main_~i~0); 1327#L12-2 assume !(0 == main_~i~0); 1328#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1387#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 1344#L12 assume 10 == main_~i~0;main_~up~0 := 0; 1345#L12-2 [2021-10-21 19:35:51,469 INFO L793 eck$LassoCheckResult]: Loop: 1345#L12-2 assume !(0 == main_~i~0); 1379#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1378#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 1346#L12 assume 10 == main_~i~0;main_~up~0 := 0; 1345#L12-2 [2021-10-21 19:35:51,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:51,470 INFO L82 PathProgramCache]: Analyzing trace with hash -976997301, now seen corresponding path program 1 times [2021-10-21 19:35:51,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:35:51,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3845664] [2021-10-21 19:35:51,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:51,471 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:35:51,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:51,504 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-21 19:35:51,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:35:51,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3845664] [2021-10-21 19:35:51,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3845664] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:35:51,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418355160] [2021-10-21 19:35:51,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:51,506 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:35:51,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:51,507 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:35:51,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2021-10-21 19:35:51,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:51,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:35:51,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:35:51,634 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-21 19:35:51,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418355160] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:35:51,634 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:35:51,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-10-21 19:35:51,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951465371] [2021-10-21 19:35:51,635 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:35:51,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:51,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1575402, now seen corresponding path program 3 times [2021-10-21 19:35:51,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:35:51,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067886777] [2021-10-21 19:35:51,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:51,641 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:35:51,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:35:51,646 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:35:51,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:35:51,651 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:35:51,686 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:35:51,687 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:35:51,687 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:35:51,687 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:35:51,688 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 19:35:51,688 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:51,688 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:35:51,688 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:35:51,688 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration10_Loop [2021-10-21 19:35:51,688 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:35:51,688 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:35:51,690 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:51,695 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:51,703 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:51,706 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:51,760 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:35:51,760 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 19:35:51,760 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:51,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:51,762 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:51,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2021-10-21 19:35:51,765 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:35:51,766 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:35:51,782 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:35:51,782 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: [] [2021-10-21 19:35:51,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:51,804 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:51,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:51,805 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:51,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2021-10-21 19:35:51,806 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:35:51,807 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:35:51,836 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Ended with exit code 0 [2021-10-21 19:35:51,837 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:51,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:51,837 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:51,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2021-10-21 19:35:51,839 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 19:35:51,839 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:35:51,966 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 19:35:51,968 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Ended with exit code 0 [2021-10-21 19:35:51,969 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:35:51,969 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:35:51,969 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:35:51,970 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:35:51,970 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 19:35:51,970 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:51,970 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:35:51,970 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:35:51,970 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration10_Loop [2021-10-21 19:35:51,970 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:35:51,970 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:35:51,971 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:51,976 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:51,982 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:51,985 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:52,039 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:35:52,039 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 19:35:52,039 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:52,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:52,047 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:52,050 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:35:52,060 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:35:52,060 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:35:52,061 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:35:52,061 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-21 19:35:52,061 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:35:52,062 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-21 19:35:52,062 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:35:52,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2021-10-21 19:35:52,089 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:35:52,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:52,115 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:52,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:52,116 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:52,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2021-10-21 19:35:52,117 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:35:52,125 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:35:52,125 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:35:52,125 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:35:52,126 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:35:52,126 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:35:52,127 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:35:52,127 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:35:52,129 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 19:35:52,131 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-21 19:35:52,131 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-21 19:35:52,132 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:52,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:52,133 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:52,142 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 19:35:52,142 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 19:35:52,142 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 19:35:52,143 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-21 19:35:52,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2021-10-21 19:35:52,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:52,181 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 19:35:52,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:52,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:52,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:35:52,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:35:52,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:52,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:35:52,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:35:52,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:35:52,280 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 [2021-10-21 19:35:52,280 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 63 states and 78 transitions. cyclomatic complexity: 22 Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:35:52,318 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 63 states and 78 transitions. cyclomatic complexity: 22. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 89 states and 110 transitions. Complement of second has 7 states. [2021-10-21 19:35:52,319 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 [2021-10-21 19:35:52,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:35:52,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2021-10-21 19:35:52,320 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 19 letters. Loop has 4 letters. [2021-10-21 19:35:52,320 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:35:52,320 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-21 19:35:52,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:52,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:52,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:35:52,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:35:52,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:52,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:35:52,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:35:52,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:35:52,439 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 [2021-10-21 19:35:52,439 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 63 states and 78 transitions. cyclomatic complexity: 22 Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:35:52,471 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 63 states and 78 transitions. cyclomatic complexity: 22. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 108 states and 129 transitions. Complement of second has 7 states. [2021-10-21 19:35:52,472 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 [2021-10-21 19:35:52,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:35:52,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2021-10-21 19:35:52,473 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 19 letters. Loop has 4 letters. [2021-10-21 19:35:52,473 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:35:52,473 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-21 19:35:52,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:52,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:52,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:35:52,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:35:52,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:52,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:35:52,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:35:52,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:35:52,577 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 [2021-10-21 19:35:52,578 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 63 states and 78 transitions. cyclomatic complexity: 22 Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:35:52,614 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 63 states and 78 transitions. cyclomatic complexity: 22. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 97 states and 122 transitions. Complement of second has 8 states. [2021-10-21 19:35:52,615 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 [2021-10-21 19:35:52,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:35:52,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2021-10-21 19:35:52,617 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 19 letters. Loop has 4 letters. [2021-10-21 19:35:52,617 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:35:52,618 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 23 letters. Loop has 4 letters. [2021-10-21 19:35:52,618 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:35:52,618 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 19 letters. Loop has 8 letters. [2021-10-21 19:35:52,620 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:35:52,620 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 97 states and 122 transitions. [2021-10-21 19:35:52,622 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 18 [2021-10-21 19:35:52,623 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 97 states to 70 states and 86 transitions. [2021-10-21 19:35:52,623 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2021-10-21 19:35:52,624 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2021-10-21 19:35:52,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 70 states and 86 transitions. [2021-10-21 19:35:52,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:35:52,624 INFO L681 BuchiCegarLoop]: Abstraction has 70 states and 86 transitions. [2021-10-21 19:35:52,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states and 86 transitions. [2021-10-21 19:35:52,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 41. [2021-10-21 19:35:52,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 41 states have (on average 1.2439024390243902) internal successors, (51), 40 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:35:52,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2021-10-21 19:35:52,629 INFO L704 BuchiCegarLoop]: Abstraction has 41 states and 51 transitions. [2021-10-21 19:35:52,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:35:52,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:35:52,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:35:52,630 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:35:52,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:35:52,706 INFO L93 Difference]: Finished difference Result 62 states and 75 transitions. [2021-10-21 19:35:52,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:35:52,707 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 75 transitions. [2021-10-21 19:35:52,708 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 23 [2021-10-21 19:35:52,708 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 60 states and 73 transitions. [2021-10-21 19:35:52,709 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2021-10-21 19:35:52,709 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2021-10-21 19:35:52,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 73 transitions. [2021-10-21 19:35:52,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:35:52,709 INFO L681 BuchiCegarLoop]: Abstraction has 60 states and 73 transitions. [2021-10-21 19:35:52,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states and 73 transitions. [2021-10-21 19:35:52,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 49. [2021-10-21 19:35:52,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 49 states have (on average 1.2244897959183674) internal successors, (60), 48 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:35:52,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 60 transitions. [2021-10-21 19:35:52,712 INFO L704 BuchiCegarLoop]: Abstraction has 49 states and 60 transitions. [2021-10-21 19:35:52,712 INFO L587 BuchiCegarLoop]: Abstraction has 49 states and 60 transitions. [2021-10-21 19:35:52,712 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-10-21 19:35:52,712 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 49 states and 60 transitions. [2021-10-21 19:35:52,712 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 21 [2021-10-21 19:35:52,712 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:35:52,713 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:35:52,713 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 1, 1, 1, 1] [2021-10-21 19:35:52,713 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [5, 4, 4, 3, 2, 1, 1] [2021-10-21 19:35:52,714 INFO L791 eck$LassoCheckResult]: Stem: 2098#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 2099#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2107#L12 assume !(10 == main_~i~0); 2109#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 2124#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2123#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2122#L12 assume !(10 == main_~i~0); 2119#L12-2 assume !(0 == main_~i~0); 2116#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2113#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2106#L12 assume 10 == main_~i~0;main_~up~0 := 0; 2090#L12-2 [2021-10-21 19:35:52,714 INFO L793 eck$LassoCheckResult]: Loop: 2090#L12-2 assume !(0 == main_~i~0); 2091#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2136#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2103#L12 assume !(10 == main_~i~0); 2105#L12-2 assume !(0 == main_~i~0); 2138#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2137#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2135#L12 assume !(10 == main_~i~0); 2127#L12-2 assume !(0 == main_~i~0); 2130#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2128#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2126#L12 assume !(10 == main_~i~0); 2125#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 2100#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2094#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2095#L12 assume !(10 == main_~i~0); 2111#L12-2 assume !(0 == main_~i~0); 2117#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2114#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2110#L12 assume 10 == main_~i~0;main_~up~0 := 0; 2090#L12-2 [2021-10-21 19:35:52,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:52,714 INFO L82 PathProgramCache]: Analyzing trace with hash -912841737, now seen corresponding path program 1 times [2021-10-21 19:35:52,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:35:52,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255833908] [2021-10-21 19:35:52,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:52,715 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:35:52,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:52,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:52,769 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:35:52,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:35:52,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255833908] [2021-10-21 19:35:52,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255833908] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:35:52,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270968500] [2021-10-21 19:35:52,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:52,770 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:35:52,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:52,771 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:35:52,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:52,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2021-10-21 19:35:52,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:52,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:35:52,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:35:52,912 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:35:52,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270968500] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:35:52,913 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:35:52,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-10-21 19:35:52,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72180831] [2021-10-21 19:35:52,914 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:35:52,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:52,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1872990932, now seen corresponding path program 2 times [2021-10-21 19:35:52,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:35:52,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902666943] [2021-10-21 19:35:52,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:52,915 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:35:52,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:52,948 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-21 19:35:52,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:35:52,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902666943] [2021-10-21 19:35:52,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902666943] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:35:52,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212938841] [2021-10-21 19:35:52,949 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:35:52,950 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:35:52,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:52,954 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:35:52,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2021-10-21 19:35:53,042 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:35:53,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:35:53,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:35:53,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:35:53,126 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-21 19:35:53,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212938841] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:35:53,127 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:35:53,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-10-21 19:35:53,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757164408] [2021-10-21 19:35:53,128 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:35:53,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:35:53,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:35:53,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:35:53,129 INFO L87 Difference]: Start difference. First operand 49 states and 60 transitions. cyclomatic complexity: 15 Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:35:53,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:35:53,151 INFO L93 Difference]: Finished difference Result 67 states and 79 transitions. [2021-10-21 19:35:53,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:35:53,154 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 67 states and 79 transitions. [2021-10-21 19:35:53,155 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 27 [2021-10-21 19:35:53,156 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 67 states to 64 states and 76 transitions. [2021-10-21 19:35:53,156 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2021-10-21 19:35:53,157 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2021-10-21 19:35:53,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 76 transitions. [2021-10-21 19:35:53,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:35:53,157 INFO L681 BuchiCegarLoop]: Abstraction has 64 states and 76 transitions. [2021-10-21 19:35:53,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states and 76 transitions. [2021-10-21 19:35:53,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 56. [2021-10-21 19:35:53,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 56 states have (on average 1.1964285714285714) internal successors, (67), 55 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:35:53,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2021-10-21 19:35:53,160 INFO L704 BuchiCegarLoop]: Abstraction has 56 states and 67 transitions. [2021-10-21 19:35:53,160 INFO L587 BuchiCegarLoop]: Abstraction has 56 states and 67 transitions. [2021-10-21 19:35:53,160 INFO L425 BuchiCegarLoop]: ======== Iteration 12============ [2021-10-21 19:35:53,160 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 56 states and 67 transitions. [2021-10-21 19:35:53,161 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 25 [2021-10-21 19:35:53,161 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:35:53,161 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:35:53,162 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 3, 2, 1, 1, 1] [2021-10-21 19:35:53,163 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [6, 5, 5, 3, 3, 1, 1] [2021-10-21 19:35:53,163 INFO L791 eck$LassoCheckResult]: Stem: 2308#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 2309#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2327#L12 assume !(10 == main_~i~0); 2334#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 2314#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2315#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2353#L12 assume !(10 == main_~i~0); 2306#L12-2 assume !(0 == main_~i~0); 2307#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2312#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2313#L12 assume !(10 == main_~i~0); 2318#L12-2 assume !(0 == main_~i~0); 2330#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2359#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2332#L12 assume 10 == main_~i~0;main_~up~0 := 0; 2304#L12-2 [2021-10-21 19:35:53,163 INFO L793 eck$LassoCheckResult]: Loop: 2304#L12-2 assume !(0 == main_~i~0); 2305#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2352#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2351#L12 assume !(10 == main_~i~0); 2350#L12-2 assume !(0 == main_~i~0); 2348#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2346#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2344#L12 assume !(10 == main_~i~0); 2338#L12-2 assume !(0 == main_~i~0); 2342#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2340#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2336#L12 assume !(10 == main_~i~0); 2329#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 2319#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2310#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2311#L12 assume !(10 == main_~i~0); 2356#L12-2 assume !(0 == main_~i~0); 2357#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2358#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2316#L12 assume !(10 == main_~i~0); 2317#L12-2 assume !(0 == main_~i~0); 2331#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2354#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2355#L12 assume 10 == main_~i~0;main_~up~0 := 0; 2304#L12-2 [2021-10-21 19:35:53,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:53,164 INFO L82 PathProgramCache]: Analyzing trace with hash 554461792, now seen corresponding path program 2 times [2021-10-21 19:35:53,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:35:53,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427900356] [2021-10-21 19:35:53,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:53,165 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:35:53,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:53,200 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:35:53,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:35:53,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427900356] [2021-10-21 19:35:53,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427900356] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:35:53,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592199092] [2021-10-21 19:35:53,202 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:35:53,202 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:35:53,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:53,206 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:35:53,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2021-10-21 19:35:53,298 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:35:53,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:35:53,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 19:35:53,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:35:53,362 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:35:53,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592199092] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:35:53,363 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:35:53,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-10-21 19:35:53,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579314241] [2021-10-21 19:35:53,363 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:35:53,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:53,363 INFO L82 PathProgramCache]: Analyzing trace with hash -77847875, now seen corresponding path program 3 times [2021-10-21 19:35:53,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:35:53,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298106911] [2021-10-21 19:35:53,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:53,364 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:35:53,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:53,403 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 35 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-21 19:35:53,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:35:53,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298106911] [2021-10-21 19:35:53,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298106911] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:35:53,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124999197] [2021-10-21 19:35:53,404 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:35:53,404 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:35:53,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:53,406 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:35:53,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2021-10-21 19:35:53,512 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-21 19:35:53,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:35:53,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 19:35:53,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:35:53,584 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 35 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-21 19:35:53,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124999197] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:35:53,585 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:35:53,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-10-21 19:35:53,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031427405] [2021-10-21 19:35:53,586 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:35:53,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:35:53,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:35:53,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:35:53,587 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. cyclomatic complexity: 15 Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:35:53,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:35:53,639 INFO L93 Difference]: Finished difference Result 75 states and 87 transitions. [2021-10-21 19:35:53,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:35:53,640 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 75 states and 87 transitions. [2021-10-21 19:35:53,641 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 31 [2021-10-21 19:35:53,642 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 75 states to 72 states and 84 transitions. [2021-10-21 19:35:53,642 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2021-10-21 19:35:53,642 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2021-10-21 19:35:53,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 72 states and 84 transitions. [2021-10-21 19:35:53,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:35:53,642 INFO L681 BuchiCegarLoop]: Abstraction has 72 states and 84 transitions. [2021-10-21 19:35:53,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states and 84 transitions. [2021-10-21 19:35:53,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 64. [2021-10-21 19:35:53,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 64 states have (on average 1.171875) internal successors, (75), 63 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:35:53,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 75 transitions. [2021-10-21 19:35:53,647 INFO L704 BuchiCegarLoop]: Abstraction has 64 states and 75 transitions. [2021-10-21 19:35:53,648 INFO L587 BuchiCegarLoop]: Abstraction has 64 states and 75 transitions. [2021-10-21 19:35:53,648 INFO L425 BuchiCegarLoop]: ======== Iteration 13============ [2021-10-21 19:35:53,648 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 64 states and 75 transitions. [2021-10-21 19:35:53,649 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 29 [2021-10-21 19:35:53,651 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:35:53,651 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:35:53,653 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 4, 4, 3, 1, 1, 1] [2021-10-21 19:35:53,654 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [7, 6, 6, 4, 3, 1, 1] [2021-10-21 19:35:53,655 INFO L791 eck$LassoCheckResult]: Stem: 2563#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 2564#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2584#L12 assume !(10 == main_~i~0); 2593#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 2569#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2570#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2574#L12 assume !(10 == main_~i~0); 2575#L12-2 assume !(0 == main_~i~0); 2571#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2567#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2568#L12 assume !(10 == main_~i~0); 2561#L12-2 assume !(0 == main_~i~0); 2562#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2613#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2612#L12 assume !(10 == main_~i~0); 2588#L12-2 assume !(0 == main_~i~0); 2589#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2611#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2590#L12 assume 10 == main_~i~0;main_~up~0 := 0; 2559#L12-2 [2021-10-21 19:35:53,656 INFO L793 eck$LassoCheckResult]: Loop: 2559#L12-2 assume !(0 == main_~i~0); 2560#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2610#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2609#L12 assume !(10 == main_~i~0); 2608#L12-2 assume !(0 == main_~i~0); 2607#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2606#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2605#L12 assume !(10 == main_~i~0); 2598#L12-2 assume !(0 == main_~i~0); 2602#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2600#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2596#L12 assume !(10 == main_~i~0); 2586#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 2576#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2565#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2566#L12 assume !(10 == main_~i~0); 2614#L12-2 assume !(0 == main_~i~0); 2615#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2622#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2616#L12 assume !(10 == main_~i~0); 2617#L12-2 assume !(0 == main_~i~0); 2621#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2619#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2572#L12 assume !(10 == main_~i~0); 2573#L12-2 assume !(0 == main_~i~0); 2587#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2620#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2618#L12 assume 10 == main_~i~0;main_~up~0 := 0; 2559#L12-2 [2021-10-21 19:35:53,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:53,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1774824375, now seen corresponding path program 3 times [2021-10-21 19:35:53,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:35:53,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893862862] [2021-10-21 19:35:53,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:53,658 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:35:53,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:53,737 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 11 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:35:53,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:35:53,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893862862] [2021-10-21 19:35:53,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893862862] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:35:53,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993110265] [2021-10-21 19:35:53,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:35:53,739 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:35:53,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:53,743 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:35:53,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2021-10-21 19:35:53,847 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-21 19:35:53,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:35:53,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-21 19:35:53,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:35:53,910 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 11 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:35:53,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993110265] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:35:53,910 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:35:53,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-21 19:35:53,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822973639] [2021-10-21 19:35:53,913 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:35:53,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:53,914 INFO L82 PathProgramCache]: Analyzing trace with hash -687303130, now seen corresponding path program 4 times [2021-10-21 19:35:53,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:35:53,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244132234] [2021-10-21 19:35:53,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:53,915 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:35:53,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:54,001 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 48 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-21 19:35:54,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:35:54,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244132234] [2021-10-21 19:35:54,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244132234] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:35:54,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711003550] [2021-10-21 19:35:54,006 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 19:35:54,006 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:35:54,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:54,011 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:35:54,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2021-10-21 19:35:54,140 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 19:35:54,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:35:54,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-21 19:35:54,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:35:54,224 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 48 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-21 19:35:54,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711003550] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:35:54,225 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:35:54,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-21 19:35:54,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85298239] [2021-10-21 19:35:54,226 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:35:54,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:35:54,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:35:54,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:35:54,227 INFO L87 Difference]: Start difference. First operand 64 states and 75 transitions. cyclomatic complexity: 15 Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:35:54,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:35:54,284 INFO L93 Difference]: Finished difference Result 83 states and 95 transitions. [2021-10-21 19:35:54,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:35:54,285 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 83 states and 95 transitions. [2021-10-21 19:35:54,286 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 35 [2021-10-21 19:35:54,287 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 83 states to 80 states and 92 transitions. [2021-10-21 19:35:54,288 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2021-10-21 19:35:54,288 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2021-10-21 19:35:54,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 92 transitions. [2021-10-21 19:35:54,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:35:54,288 INFO L681 BuchiCegarLoop]: Abstraction has 80 states and 92 transitions. [2021-10-21 19:35:54,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states and 92 transitions. [2021-10-21 19:35:54,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 72. [2021-10-21 19:35:54,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 72 states have (on average 1.1527777777777777) internal successors, (83), 71 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:35:54,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 83 transitions. [2021-10-21 19:35:54,291 INFO L704 BuchiCegarLoop]: Abstraction has 72 states and 83 transitions. [2021-10-21 19:35:54,292 INFO L587 BuchiCegarLoop]: Abstraction has 72 states and 83 transitions. [2021-10-21 19:35:54,292 INFO L425 BuchiCegarLoop]: ======== Iteration 14============ [2021-10-21 19:35:54,292 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 72 states and 83 transitions. [2021-10-21 19:35:54,293 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 33 [2021-10-21 19:35:54,293 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:35:54,293 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:35:54,294 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [6, 5, 5, 4, 1, 1, 1] [2021-10-21 19:35:54,295 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [8, 7, 7, 5, 3, 1, 1] [2021-10-21 19:35:54,295 INFO L791 eck$LassoCheckResult]: Stem: 2864#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 2865#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2880#L12 assume !(10 == main_~i~0); 2890#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 2866#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2862#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2863#L12 assume !(10 == main_~i~0); 2858#L12-2 assume !(0 == main_~i~0); 2859#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2867#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2869#L12 assume !(10 == main_~i~0); 2870#L12-2 assume !(0 == main_~i~0); 2915#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2914#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2913#L12 assume !(10 == main_~i~0); 2912#L12-2 assume !(0 == main_~i~0); 2885#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2911#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2909#L12 assume !(10 == main_~i~0); 2884#L12-2 assume !(0 == main_~i~0); 2886#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2908#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2887#L12 assume 10 == main_~i~0;main_~up~0 := 0; 2856#L12-2 [2021-10-21 19:35:54,295 INFO L793 eck$LassoCheckResult]: Loop: 2856#L12-2 assume !(0 == main_~i~0); 2857#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2907#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2906#L12 assume !(10 == main_~i~0); 2905#L12-2 assume !(0 == main_~i~0); 2904#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2903#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2902#L12 assume !(10 == main_~i~0); 2895#L12-2 assume !(0 == main_~i~0); 2899#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2897#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2893#L12 assume !(10 == main_~i~0); 2882#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 2871#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2872#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2918#L12 assume !(10 == main_~i~0); 2916#L12-2 assume !(0 == main_~i~0); 2917#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2927#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2926#L12 assume !(10 == main_~i~0); 2924#L12-2 assume !(0 == main_~i~0); 2923#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2922#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2921#L12 assume !(10 == main_~i~0); 2920#L12-2 assume !(0 == main_~i~0); 2919#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2860#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2861#L12 assume !(10 == main_~i~0); 2868#L12-2 assume !(0 == main_~i~0); 2883#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2910#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2925#L12 assume 10 == main_~i~0;main_~up~0 := 0; 2856#L12-2 [2021-10-21 19:35:54,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:54,296 INFO L82 PathProgramCache]: Analyzing trace with hash 790045106, now seen corresponding path program 4 times [2021-10-21 19:35:54,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:35:54,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27109736] [2021-10-21 19:35:54,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:54,297 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:35:54,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:54,355 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 14 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:35:54,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:35:54,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27109736] [2021-10-21 19:35:54,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27109736] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:35:54,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900404936] [2021-10-21 19:35:54,357 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 19:35:54,357 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:35:54,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:54,363 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:35:54,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2021-10-21 19:35:54,500 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 19:35:54,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:35:54,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 19:35:54,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:35:54,590 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 14 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:35:54,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900404936] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:35:54,591 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:35:54,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-10-21 19:35:54,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702113267] [2021-10-21 19:35:54,592 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:35:54,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:54,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1460350223, now seen corresponding path program 5 times [2021-10-21 19:35:54,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:35:54,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973005089] [2021-10-21 19:35:54,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:54,593 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:35:54,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:54,672 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 61 proven. 36 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-21 19:35:54,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:35:54,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973005089] [2021-10-21 19:35:54,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973005089] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:35:54,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438412279] [2021-10-21 19:35:54,673 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-21 19:35:54,675 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:35:54,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:54,677 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:35:54,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2021-10-21 19:35:54,816 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-10-21 19:35:54,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:35:54,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 19:35:54,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:35:54,929 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 61 proven. 36 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-21 19:35:54,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438412279] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:35:54,930 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:35:54,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-10-21 19:35:54,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613195908] [2021-10-21 19:35:54,930 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:35:54,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:35:54,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 19:35:54,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:35:54,932 INFO L87 Difference]: Start difference. First operand 72 states and 83 transitions. cyclomatic complexity: 15 Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:35:54,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:35:54,981 INFO L93 Difference]: Finished difference Result 91 states and 103 transitions. [2021-10-21 19:35:54,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:35:54,982 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 91 states and 103 transitions. [2021-10-21 19:35:54,983 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 39 [2021-10-21 19:35:54,989 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 91 states to 88 states and 100 transitions. [2021-10-21 19:35:54,989 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 37 [2021-10-21 19:35:54,990 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 37 [2021-10-21 19:35:54,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 100 transitions. [2021-10-21 19:35:54,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:35:54,990 INFO L681 BuchiCegarLoop]: Abstraction has 88 states and 100 transitions. [2021-10-21 19:35:54,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states and 100 transitions. [2021-10-21 19:35:54,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 80. [2021-10-21 19:35:54,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 80 states have (on average 1.1375) internal successors, (91), 79 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:35:54,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 91 transitions. [2021-10-21 19:35:54,994 INFO L704 BuchiCegarLoop]: Abstraction has 80 states and 91 transitions. [2021-10-21 19:35:54,994 INFO L587 BuchiCegarLoop]: Abstraction has 80 states and 91 transitions. [2021-10-21 19:35:54,994 INFO L425 BuchiCegarLoop]: ======== Iteration 15============ [2021-10-21 19:35:54,994 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 80 states and 91 transitions. [2021-10-21 19:35:54,995 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 37 [2021-10-21 19:35:54,995 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:35:54,995 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:35:55,000 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [7, 6, 6, 5, 1, 1, 1] [2021-10-21 19:35:55,000 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [9, 8, 8, 6, 3, 1, 1] [2021-10-21 19:35:55,000 INFO L791 eck$LassoCheckResult]: Stem: 3199#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 3200#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3217#L12 assume !(10 == main_~i~0); 3228#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 3205#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3203#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3204#L12 assume !(10 == main_~i~0); 3197#L12-2 assume !(0 == main_~i~0); 3198#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3206#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3208#L12 assume !(10 == main_~i~0); 3209#L12-2 assume !(0 == main_~i~0); 3256#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3255#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3254#L12 assume !(10 == main_~i~0); 3253#L12-2 assume !(0 == main_~i~0); 3252#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3251#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3250#L12 assume !(10 == main_~i~0); 3249#L12-2 assume !(0 == main_~i~0); 3223#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3248#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3247#L12 assume !(10 == main_~i~0); 3222#L12-2 assume !(0 == main_~i~0); 3224#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3246#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3225#L12 assume 10 == main_~i~0;main_~up~0 := 0; 3195#L12-2 [2021-10-21 19:35:55,000 INFO L793 eck$LassoCheckResult]: Loop: 3195#L12-2 assume !(0 == main_~i~0); 3196#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3245#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3244#L12 assume !(10 == main_~i~0); 3243#L12-2 assume !(0 == main_~i~0); 3242#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3241#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3240#L12 assume !(10 == main_~i~0); 3233#L12-2 assume !(0 == main_~i~0); 3237#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3235#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3231#L12 assume !(10 == main_~i~0); 3220#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 3210#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3201#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3202#L12 assume !(10 == main_~i~0); 3207#L12-2 assume !(0 == main_~i~0); 3221#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3274#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3273#L12 assume !(10 == main_~i~0); 3272#L12-2 assume !(0 == main_~i~0); 3271#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3270#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3269#L12 assume !(10 == main_~i~0); 3268#L12-2 assume !(0 == main_~i~0); 3267#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3266#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3265#L12 assume !(10 == main_~i~0); 3264#L12-2 assume !(0 == main_~i~0); 3263#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3261#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3259#L12 assume !(10 == main_~i~0); 3257#L12-2 assume !(0 == main_~i~0); 3258#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3262#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3260#L12 assume 10 == main_~i~0;main_~up~0 := 0; 3195#L12-2 [2021-10-21 19:35:55,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:55,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1500441957, now seen corresponding path program 5 times [2021-10-21 19:35:55,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:35:55,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094323559] [2021-10-21 19:35:55,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:55,002 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:35:55,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:55,077 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 17 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:35:55,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:35:55,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094323559] [2021-10-21 19:35:55,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094323559] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:35:55,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101998971] [2021-10-21 19:35:55,078 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-21 19:35:55,078 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:35:55,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:55,080 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:35:55,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2021-10-21 19:35:55,206 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-10-21 19:35:55,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:35:55,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 19:35:55,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:35:55,308 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 17 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:35:55,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101998971] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:35:55,309 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:35:55,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-10-21 19:35:55,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599652132] [2021-10-21 19:35:55,309 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:35:55,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:55,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1420175224, now seen corresponding path program 6 times [2021-10-21 19:35:55,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:35:55,310 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782876621] [2021-10-21 19:35:55,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:55,311 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:35:55,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:55,393 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 74 proven. 55 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-21 19:35:55,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:35:55,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782876621] [2021-10-21 19:35:55,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782876621] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:35:55,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532144203] [2021-10-21 19:35:55,394 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-21 19:35:55,395 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:35:55,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:55,399 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:35:55,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2021-10-21 19:35:55,564 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-10-21 19:35:55,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:35:55,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 19:35:55,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:35:55,714 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 74 proven. 55 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-21 19:35:55,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532144203] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:35:55,715 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:35:55,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-10-21 19:35:55,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733266954] [2021-10-21 19:35:55,715 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:35:55,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:35:55,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 19:35:55,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:35:55,717 INFO L87 Difference]: Start difference. First operand 80 states and 91 transitions. cyclomatic complexity: 15 Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 9 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:35:55,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:35:55,769 INFO L93 Difference]: Finished difference Result 99 states and 111 transitions. [2021-10-21 19:35:55,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 19:35:55,770 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 99 states and 111 transitions. [2021-10-21 19:35:55,771 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 43 [2021-10-21 19:35:55,772 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 99 states to 96 states and 108 transitions. [2021-10-21 19:35:55,772 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2021-10-21 19:35:55,773 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2021-10-21 19:35:55,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 96 states and 108 transitions. [2021-10-21 19:35:55,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:35:55,773 INFO L681 BuchiCegarLoop]: Abstraction has 96 states and 108 transitions. [2021-10-21 19:35:55,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states and 108 transitions. [2021-10-21 19:35:55,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 88. [2021-10-21 19:35:55,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 88 states have (on average 1.125) internal successors, (99), 87 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:35:55,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 99 transitions. [2021-10-21 19:35:55,777 INFO L704 BuchiCegarLoop]: Abstraction has 88 states and 99 transitions. [2021-10-21 19:35:55,777 INFO L587 BuchiCegarLoop]: Abstraction has 88 states and 99 transitions. [2021-10-21 19:35:55,777 INFO L425 BuchiCegarLoop]: ======== Iteration 16============ [2021-10-21 19:35:55,778 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 88 states and 99 transitions. [2021-10-21 19:35:55,778 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 41 [2021-10-21 19:35:55,779 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:35:55,779 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:35:55,781 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [8, 7, 7, 6, 1, 1, 1] [2021-10-21 19:35:55,781 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [10, 9, 9, 7, 3, 1, 1] [2021-10-21 19:35:55,782 INFO L791 eck$LassoCheckResult]: Stem: 3580#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 3581#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3600#L12 assume !(10 == main_~i~0); 3610#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 3586#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3587#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3590#L12 assume !(10 == main_~i~0); 3591#L12-2 assume !(0 == main_~i~0); 3588#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3584#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3585#L12 assume !(10 == main_~i~0); 3578#L12-2 assume !(0 == main_~i~0); 3579#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3641#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3640#L12 assume !(10 == main_~i~0); 3639#L12-2 assume !(0 == main_~i~0); 3638#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3637#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3636#L12 assume !(10 == main_~i~0); 3635#L12-2 assume !(0 == main_~i~0); 3634#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3633#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3632#L12 assume !(10 == main_~i~0); 3631#L12-2 assume !(0 == main_~i~0); 3605#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3630#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3629#L12 assume !(10 == main_~i~0); 3604#L12-2 assume !(0 == main_~i~0); 3606#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3628#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3607#L12 assume 10 == main_~i~0;main_~up~0 := 0; 3576#L12-2 [2021-10-21 19:35:55,785 INFO L793 eck$LassoCheckResult]: Loop: 3576#L12-2 assume !(0 == main_~i~0); 3577#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3627#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3626#L12 assume !(10 == main_~i~0); 3625#L12-2 assume !(0 == main_~i~0); 3624#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3623#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3622#L12 assume !(10 == main_~i~0); 3615#L12-2 assume !(0 == main_~i~0); 3619#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3617#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3613#L12 assume !(10 == main_~i~0); 3602#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 3592#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3582#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3583#L12 assume !(10 == main_~i~0); 3589#L12-2 assume !(0 == main_~i~0); 3603#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3663#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3662#L12 assume !(10 == main_~i~0); 3661#L12-2 assume !(0 == main_~i~0); 3660#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3659#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3658#L12 assume !(10 == main_~i~0); 3657#L12-2 assume !(0 == main_~i~0); 3656#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3655#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3654#L12 assume !(10 == main_~i~0); 3653#L12-2 assume !(0 == main_~i~0); 3652#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3651#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3650#L12 assume !(10 == main_~i~0); 3649#L12-2 assume !(0 == main_~i~0); 3648#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3646#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3644#L12 assume !(10 == main_~i~0); 3642#L12-2 assume !(0 == main_~i~0); 3643#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3647#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3645#L12 assume 10 == main_~i~0;main_~up~0 := 0; 3576#L12-2 [2021-10-21 19:35:55,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:55,786 INFO L82 PathProgramCache]: Analyzing trace with hash -60397820, now seen corresponding path program 6 times [2021-10-21 19:35:55,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:35:55,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615911221] [2021-10-21 19:35:55,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:55,786 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:35:55,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:55,862 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 20 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:35:55,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:35:55,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615911221] [2021-10-21 19:35:55,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615911221] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:35:55,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200692999] [2021-10-21 19:35:55,863 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-21 19:35:55,863 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:35:55,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:55,864 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:35:55,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2021-10-21 19:35:56,035 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-10-21 19:35:56,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:35:56,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-21 19:35:56,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:35:56,135 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 20 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:35:56,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200692999] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:35:56,135 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:35:56,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-10-21 19:35:56,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008342651] [2021-10-21 19:35:56,136 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:35:56,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:56,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1107573407, now seen corresponding path program 7 times [2021-10-21 19:35:56,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:35:56,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820819838] [2021-10-21 19:35:56,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:56,138 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:35:56,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:56,216 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 87 proven. 78 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-21 19:35:56,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:35:56,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820819838] [2021-10-21 19:35:56,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820819838] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:35:56,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959720211] [2021-10-21 19:35:56,218 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-21 19:35:56,218 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:35:56,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:56,220 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:35:56,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2021-10-21 19:35:56,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:56,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-21 19:35:56,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:35:56,545 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 87 proven. 78 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-21 19:35:56,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959720211] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:35:56,546 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:35:56,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-10-21 19:35:56,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138082440] [2021-10-21 19:35:56,548 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:35:56,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:35:56,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 19:35:56,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:35:56,550 INFO L87 Difference]: Start difference. First operand 88 states and 99 transitions. cyclomatic complexity: 15 Second operand has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:35:56,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:35:56,613 INFO L93 Difference]: Finished difference Result 107 states and 119 transitions. [2021-10-21 19:35:56,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 19:35:56,614 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 107 states and 119 transitions. [2021-10-21 19:35:56,615 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 47 [2021-10-21 19:35:56,616 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 107 states to 104 states and 116 transitions. [2021-10-21 19:35:56,616 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 45 [2021-10-21 19:35:56,617 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 45 [2021-10-21 19:35:56,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 104 states and 116 transitions. [2021-10-21 19:35:56,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:35:56,617 INFO L681 BuchiCegarLoop]: Abstraction has 104 states and 116 transitions. [2021-10-21 19:35:56,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states and 116 transitions. [2021-10-21 19:35:56,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 96. [2021-10-21 19:35:56,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 96 states have (on average 1.1145833333333333) internal successors, (107), 95 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:35:56,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 107 transitions. [2021-10-21 19:35:56,621 INFO L704 BuchiCegarLoop]: Abstraction has 96 states and 107 transitions. [2021-10-21 19:35:56,621 INFO L587 BuchiCegarLoop]: Abstraction has 96 states and 107 transitions. [2021-10-21 19:35:56,621 INFO L425 BuchiCegarLoop]: ======== Iteration 17============ [2021-10-21 19:35:56,624 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 96 states and 107 transitions. [2021-10-21 19:35:56,625 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 45 [2021-10-21 19:35:56,625 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:35:56,626 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:35:56,629 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [9, 8, 8, 7, 1, 1, 1] [2021-10-21 19:35:56,630 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [11, 10, 10, 8, 3, 1, 1] [2021-10-21 19:35:56,630 INFO L791 eck$LassoCheckResult]: Stem: 4003#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 4004#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4023#L12 assume !(10 == main_~i~0); 4033#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 4009#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4010#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4013#L12 assume !(10 == main_~i~0); 4014#L12-2 assume !(0 == main_~i~0); 4011#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4007#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4008#L12 assume !(10 == main_~i~0); 4001#L12-2 assume !(0 == main_~i~0); 4002#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4068#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4067#L12 assume !(10 == main_~i~0); 4066#L12-2 assume !(0 == main_~i~0); 4065#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4064#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4063#L12 assume !(10 == main_~i~0); 4062#L12-2 assume !(0 == main_~i~0); 4061#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4060#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4059#L12 assume !(10 == main_~i~0); 4058#L12-2 assume !(0 == main_~i~0); 4057#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4056#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4055#L12 assume !(10 == main_~i~0); 4054#L12-2 assume !(0 == main_~i~0); 4028#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4053#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4052#L12 assume !(10 == main_~i~0); 4027#L12-2 assume !(0 == main_~i~0); 4029#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4051#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4030#L12 assume 10 == main_~i~0;main_~up~0 := 0; 3999#L12-2 [2021-10-21 19:35:56,630 INFO L793 eck$LassoCheckResult]: Loop: 3999#L12-2 assume !(0 == main_~i~0); 4000#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4050#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4049#L12 assume !(10 == main_~i~0); 4048#L12-2 assume !(0 == main_~i~0); 4047#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4046#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4045#L12 assume !(10 == main_~i~0); 4038#L12-2 assume !(0 == main_~i~0); 4042#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4040#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4036#L12 assume !(10 == main_~i~0); 4025#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 4015#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4005#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4006#L12 assume !(10 == main_~i~0); 4012#L12-2 assume !(0 == main_~i~0); 4026#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4094#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4093#L12 assume !(10 == main_~i~0); 4092#L12-2 assume !(0 == main_~i~0); 4091#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4090#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4089#L12 assume !(10 == main_~i~0); 4088#L12-2 assume !(0 == main_~i~0); 4087#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4086#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4085#L12 assume !(10 == main_~i~0); 4084#L12-2 assume !(0 == main_~i~0); 4083#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4082#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4081#L12 assume !(10 == main_~i~0); 4080#L12-2 assume !(0 == main_~i~0); 4079#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4078#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4077#L12 assume !(10 == main_~i~0); 4076#L12-2 assume !(0 == main_~i~0); 4075#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4073#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4071#L12 assume !(10 == main_~i~0); 4069#L12-2 assume !(0 == main_~i~0); 4070#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4074#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4072#L12 assume 10 == main_~i~0;main_~up~0 := 0; 3999#L12-2 [2021-10-21 19:35:56,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:56,631 INFO L82 PathProgramCache]: Analyzing trace with hash 87645933, now seen corresponding path program 7 times [2021-10-21 19:35:56,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:35:56,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077843494] [2021-10-21 19:35:56,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:56,632 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:35:56,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:56,745 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 23 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:35:56,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:35:56,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077843494] [2021-10-21 19:35:56,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077843494] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:35:56,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788722522] [2021-10-21 19:35:56,746 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-21 19:35:56,746 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:35:56,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:56,748 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:35:56,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2021-10-21 19:35:56,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:56,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-21 19:35:56,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:35:57,049 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 23 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:35:57,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788722522] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:35:57,049 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:35:57,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-10-21 19:35:57,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612790199] [2021-10-21 19:35:57,050 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:35:57,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:57,051 INFO L82 PathProgramCache]: Analyzing trace with hash 638469834, now seen corresponding path program 8 times [2021-10-21 19:35:57,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:35:57,051 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556621149] [2021-10-21 19:35:57,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:57,052 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:35:57,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:57,144 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 100 proven. 105 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-21 19:35:57,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:35:57,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556621149] [2021-10-21 19:35:57,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556621149] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:35:57,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495814150] [2021-10-21 19:35:57,145 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:35:57,145 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:35:57,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:57,153 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:35:57,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2021-10-21 19:35:57,376 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:35:57,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:35:57,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-21 19:35:57,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:35:57,536 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 100 proven. 105 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-21 19:35:57,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495814150] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:35:57,536 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:35:57,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-10-21 19:35:57,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612793096] [2021-10-21 19:35:57,537 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:35:57,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:35:57,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 19:35:57,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:35:57,539 INFO L87 Difference]: Start difference. First operand 96 states and 107 transitions. cyclomatic complexity: 15 Second operand has 11 states, 10 states have (on average 3.5) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:35:57,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:35:57,607 INFO L93 Difference]: Finished difference Result 115 states and 127 transitions. [2021-10-21 19:35:57,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 19:35:57,607 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 115 states and 127 transitions. [2021-10-21 19:35:57,609 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 51 [2021-10-21 19:35:57,610 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 115 states to 112 states and 124 transitions. [2021-10-21 19:35:57,610 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 49 [2021-10-21 19:35:57,611 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 49 [2021-10-21 19:35:57,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 112 states and 124 transitions. [2021-10-21 19:35:57,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:35:57,611 INFO L681 BuchiCegarLoop]: Abstraction has 112 states and 124 transitions. [2021-10-21 19:35:57,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states and 124 transitions. [2021-10-21 19:35:57,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 104. [2021-10-21 19:35:57,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 104 states have (on average 1.1057692307692308) internal successors, (115), 103 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:35:57,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 115 transitions. [2021-10-21 19:35:57,614 INFO L704 BuchiCegarLoop]: Abstraction has 104 states and 115 transitions. [2021-10-21 19:35:57,614 INFO L587 BuchiCegarLoop]: Abstraction has 104 states and 115 transitions. [2021-10-21 19:35:57,614 INFO L425 BuchiCegarLoop]: ======== Iteration 18============ [2021-10-21 19:35:57,614 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 104 states and 115 transitions. [2021-10-21 19:35:57,615 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 49 [2021-10-21 19:35:57,615 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:35:57,615 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:35:57,617 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [10, 9, 9, 8, 1, 1, 1] [2021-10-21 19:35:57,617 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [12, 11, 11, 9, 3, 1, 1] [2021-10-21 19:35:57,617 INFO L791 eck$LassoCheckResult]: Stem: 4472#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; 4473#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4488#L12 assume !(10 == main_~i~0); 4497#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 4474#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4475#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4478#L12 assume !(10 == main_~i~0); 4479#L12-2 assume !(0 == main_~i~0); 4476#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4470#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4471#L12 assume !(10 == main_~i~0); 4466#L12-2 assume !(0 == main_~i~0); 4467#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4537#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4536#L12 assume !(10 == main_~i~0); 4535#L12-2 assume !(0 == main_~i~0); 4534#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4533#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4532#L12 assume !(10 == main_~i~0); 4531#L12-2 assume !(0 == main_~i~0); 4530#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4529#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4528#L12 assume !(10 == main_~i~0); 4527#L12-2 assume !(0 == main_~i~0); 4526#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4525#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4524#L12 assume !(10 == main_~i~0); 4523#L12-2 assume !(0 == main_~i~0); 4522#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4521#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4520#L12 assume !(10 == main_~i~0); 4519#L12-2 assume !(0 == main_~i~0); 4493#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4518#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4517#L12 assume !(10 == main_~i~0); 4492#L12-2 assume !(0 == main_~i~0); 4494#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4516#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4495#L12 assume 10 == main_~i~0;main_~up~0 := 0; 4464#L12-2 [2021-10-21 19:35:57,618 INFO L793 eck$LassoCheckResult]: Loop: 4464#L12-2 assume !(0 == main_~i~0); 4465#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4515#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4514#L12 assume !(10 == main_~i~0); 4513#L12-2 assume !(0 == main_~i~0); 4511#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4509#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4507#L12 assume !(10 == main_~i~0); 4501#L12-2 assume !(0 == main_~i~0); 4505#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4503#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4499#L12 assume !(10 == main_~i~0); 4490#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 4480#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4468#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4469#L12 assume !(10 == main_~i~0); 4477#L12-2 assume !(0 == main_~i~0); 4491#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4567#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4566#L12 assume !(10 == main_~i~0); 4565#L12-2 assume !(0 == main_~i~0); 4564#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4563#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4562#L12 assume !(10 == main_~i~0); 4561#L12-2 assume !(0 == main_~i~0); 4560#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4559#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4558#L12 assume !(10 == main_~i~0); 4557#L12-2 assume !(0 == main_~i~0); 4556#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4555#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4554#L12 assume !(10 == main_~i~0); 4553#L12-2 assume !(0 == main_~i~0); 4552#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4551#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4550#L12 assume !(10 == main_~i~0); 4549#L12-2 assume !(0 == main_~i~0); 4548#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4547#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4546#L12 assume !(10 == main_~i~0); 4545#L12-2 assume !(0 == main_~i~0); 4544#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4542#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4540#L12 assume !(10 == main_~i~0); 4538#L12-2 assume !(0 == main_~i~0); 4539#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4543#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4541#L12 assume 10 == main_~i~0;main_~up~0 := 0; 4464#L12-2 [2021-10-21 19:35:57,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:57,618 INFO L82 PathProgramCache]: Analyzing trace with hash -91473322, now seen corresponding path program 8 times [2021-10-21 19:35:57,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:35:57,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862961649] [2021-10-21 19:35:57,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:57,619 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:35:57,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:57,717 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 26 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:35:57,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:35:57,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862961649] [2021-10-21 19:35:57,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862961649] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:35:57,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640351667] [2021-10-21 19:35:57,719 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:35:57,719 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:35:57,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:57,721 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:35:57,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2021-10-21 19:35:57,948 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:35:57,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:35:57,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 19:35:57,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:35:58,107 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 26 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:35:58,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640351667] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:35:58,108 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:35:58,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-10-21 19:35:58,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034035489] [2021-10-21 19:35:58,109 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:35:58,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:58,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1421863859, now seen corresponding path program 9 times [2021-10-21 19:35:58,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:35:58,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059853031] [2021-10-21 19:35:58,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:58,110 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:35:58,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:58,238 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 113 proven. 136 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-21 19:35:58,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:35:58,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059853031] [2021-10-21 19:35:58,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059853031] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:35:58,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605469320] [2021-10-21 19:35:58,239 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:35:58,240 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:35:58,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:58,242 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:35:58,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2021-10-21 19:35:58,517 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-10-21 19:35:58,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:35:58,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 19:35:58,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:35:58,652 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 113 proven. 136 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-21 19:35:58,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605469320] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:35:58,653 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:35:58,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-10-21 19:35:58,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467790283] [2021-10-21 19:35:58,655 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:35:58,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:35:58,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-21 19:35:58,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-21 19:35:58,657 INFO L87 Difference]: Start difference. First operand 104 states and 115 transitions. cyclomatic complexity: 15 Second operand has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:35:58,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:35:58,717 INFO L93 Difference]: Finished difference Result 123 states and 135 transitions. [2021-10-21 19:35:58,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 19:35:58,718 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 123 states and 135 transitions. [2021-10-21 19:35:58,719 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 55 [2021-10-21 19:35:58,721 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 123 states to 120 states and 132 transitions. [2021-10-21 19:35:58,721 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 53 [2021-10-21 19:35:58,721 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53 [2021-10-21 19:35:58,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 120 states and 132 transitions. [2021-10-21 19:35:58,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:35:58,722 INFO L681 BuchiCegarLoop]: Abstraction has 120 states and 132 transitions. [2021-10-21 19:35:58,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states and 132 transitions. [2021-10-21 19:35:58,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 112. [2021-10-21 19:35:58,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 112 states have (on average 1.0982142857142858) internal successors, (123), 111 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:35:58,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 123 transitions. [2021-10-21 19:35:58,725 INFO L704 BuchiCegarLoop]: Abstraction has 112 states and 123 transitions. [2021-10-21 19:35:58,725 INFO L587 BuchiCegarLoop]: Abstraction has 112 states and 123 transitions. [2021-10-21 19:35:58,725 INFO L425 BuchiCegarLoop]: ======== Iteration 19============ [2021-10-21 19:35:58,725 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 112 states and 123 transitions. [2021-10-21 19:35:58,726 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 53 [2021-10-21 19:35:58,726 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:35:58,727 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:35:58,730 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 9, 1, 1, 1] [2021-10-21 19:35:58,730 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [13, 12, 12, 10, 3, 1, 1] [2021-10-21 19:35:58,731 INFO L791 eck$LassoCheckResult]: Stem: 4979#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; 4980#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4994#L12 assume !(10 == main_~i~0); 5005#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 4981#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4982#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4985#L12 assume !(10 == main_~i~0); 4986#L12-2 assume !(0 == main_~i~0); 4983#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4977#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4978#L12 assume !(10 == main_~i~0); 4973#L12-2 assume !(0 == main_~i~0); 4974#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5048#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5047#L12 assume !(10 == main_~i~0); 5046#L12-2 assume !(0 == main_~i~0); 5045#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5044#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5043#L12 assume !(10 == main_~i~0); 5042#L12-2 assume !(0 == main_~i~0); 5041#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5040#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5039#L12 assume !(10 == main_~i~0); 5038#L12-2 assume !(0 == main_~i~0); 5037#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5036#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5035#L12 assume !(10 == main_~i~0); 5034#L12-2 assume !(0 == main_~i~0); 5033#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5032#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5031#L12 assume !(10 == main_~i~0); 5030#L12-2 assume !(0 == main_~i~0); 5029#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5028#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5027#L12 assume !(10 == main_~i~0); 5026#L12-2 assume !(0 == main_~i~0); 5000#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5025#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5024#L12 assume !(10 == main_~i~0); 4999#L12-2 assume !(0 == main_~i~0); 5001#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5023#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5002#L12 assume 10 == main_~i~0;main_~up~0 := 0; 4971#L12-2 [2021-10-21 19:35:58,731 INFO L793 eck$LassoCheckResult]: Loop: 4971#L12-2 assume !(0 == main_~i~0); 4972#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5022#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5021#L12 assume !(10 == main_~i~0); 5020#L12-2 assume !(0 == main_~i~0); 5019#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5018#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5017#L12 assume !(10 == main_~i~0); 5010#L12-2 assume !(0 == main_~i~0); 5014#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5012#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5008#L12 assume !(10 == main_~i~0); 4997#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 4987#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4975#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4976#L12 assume !(10 == main_~i~0); 4984#L12-2 assume !(0 == main_~i~0); 4998#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5082#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5081#L12 assume !(10 == main_~i~0); 5080#L12-2 assume !(0 == main_~i~0); 5079#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5078#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5077#L12 assume !(10 == main_~i~0); 5076#L12-2 assume !(0 == main_~i~0); 5075#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5074#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5073#L12 assume !(10 == main_~i~0); 5072#L12-2 assume !(0 == main_~i~0); 5071#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5070#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5069#L12 assume !(10 == main_~i~0); 5068#L12-2 assume !(0 == main_~i~0); 5067#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5066#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5065#L12 assume !(10 == main_~i~0); 5064#L12-2 assume !(0 == main_~i~0); 5063#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5062#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5061#L12 assume !(10 == main_~i~0); 5060#L12-2 assume !(0 == main_~i~0); 5059#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5058#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5057#L12 assume !(10 == main_~i~0); 5056#L12-2 assume !(0 == main_~i~0); 5055#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5053#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5051#L12 assume !(10 == main_~i~0); 5049#L12-2 assume !(0 == main_~i~0); 5050#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5054#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5052#L12 assume 10 == main_~i~0;main_~up~0 := 0; 4971#L12-2 [2021-10-21 19:35:58,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:58,731 INFO L82 PathProgramCache]: Analyzing trace with hash 180435263, now seen corresponding path program 9 times [2021-10-21 19:35:58,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:35:58,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128573715] [2021-10-21 19:35:58,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:58,732 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:35:58,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:35:58,740 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:35:58,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:35:58,748 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:35:58,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:58,749 INFO L82 PathProgramCache]: Analyzing trace with hash -690818020, now seen corresponding path program 10 times [2021-10-21 19:35:58,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:35:58,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876319800] [2021-10-21 19:35:58,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:58,750 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:35:58,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:35:58,759 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:35:58,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:35:58,767 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:35:58,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:35:58,768 INFO L82 PathProgramCache]: Analyzing trace with hash -120542630, now seen corresponding path program 2 times [2021-10-21 19:35:58,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:35:58,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930386184] [2021-10-21 19:35:58,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:35:58,769 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:35:58,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:35:58,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 672 proven. 15 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2021-10-21 19:35:58,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:35:58,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930386184] [2021-10-21 19:35:58,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930386184] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:35:58,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629863787] [2021-10-21 19:35:58,823 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:35:58,823 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:35:58,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:58,825 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:35:58,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2021-10-21 19:35:59,059 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:35:59,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:35:59,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 19:35:59,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:35:59,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 672 proven. 15 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2021-10-21 19:35:59,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629863787] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:35:59,311 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:35:59,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-21 19:35:59,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213326171] [2021-10-21 19:35:59,617 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:35:59,617 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:35:59,617 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:35:59,617 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:35:59,617 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 19:35:59,617 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:59,618 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:35:59,618 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:35:59,618 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration19_Loop [2021-10-21 19:35:59,618 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:35:59,618 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:35:59,619 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:59,622 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:59,631 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:59,636 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:59,715 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:35:59,715 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 19:35:59,715 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:59,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:59,720 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:59,722 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:35:59,722 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:35:59,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Waiting until timeout for monitored process [2021-10-21 19:35:59,742 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:35:59,742 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: [] [2021-10-21 19:35:59,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:59,775 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:59,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:59,776 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:59,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Waiting until timeout for monitored process [2021-10-21 19:35:59,778 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:35:59,778 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:35:59,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:59,811 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:59,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:59,812 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:59,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Waiting until timeout for monitored process [2021-10-21 19:35:59,814 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 19:35:59,814 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:35:59,852 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 19:35:59,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Forceful destruction successful, exit code 0 [2021-10-21 19:35:59,877 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:35:59,877 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:35:59,877 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:35:59,877 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:35:59,877 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 19:35:59,877 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:59,877 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:35:59,877 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:35:59,877 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration19_Loop [2021-10-21 19:35:59,877 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:35:59,878 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:35:59,879 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:59,881 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:59,890 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:59,895 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:35:59,966 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:35:59,967 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 19:35:59,967 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:35:59,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:35:59,969 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:35:59,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Waiting until timeout for monitored process [2021-10-21 19:35:59,971 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:35:59,979 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:35:59,979 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:35:59,979 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:35:59,979 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:35:59,983 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 19:35:59,983 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 19:35:59,986 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:36:00,009 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Ended with exit code 0 [2021-10-21 19:36:00,009 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:36:00,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:36:00,010 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:36:00,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Waiting until timeout for monitored process [2021-10-21 19:36:00,011 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:36:00,020 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:36:00,020 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:36:00,020 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:36:00,020 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:36:00,020 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:36:00,021 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:36:00,021 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:36:00,025 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 19:36:00,028 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-21 19:36:00,028 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-21 19:36:00,028 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:36:00,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:36:00,029 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:36:00,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (83)] Waiting until timeout for monitored process [2021-10-21 19:36:00,030 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 19:36:00,030 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 19:36:00,031 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 19:36:00,031 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 13 Supporting invariants [] [2021-10-21 19:36:00,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Forceful destruction successful, exit code 0 [2021-10-21 19:36:00,054 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 19:36:00,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:36:00,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:36:00,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:36:00,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:36:00,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (83)] Forceful destruction successful, exit code 0 [2021-10-21 19:36:00,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:36:00,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 19:36:00,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:36:00,512 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-10-21 19:36:00,513 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 [2021-10-21 19:36:00,513 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 112 states and 123 transitions. cyclomatic complexity: 15 Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:36:00,759 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 112 states and 123 transitions. cyclomatic complexity: 15. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 461 states and 502 transitions. Complement of second has 19 states. [2021-10-21 19:36:00,760 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 [2021-10-21 19:36:00,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:36:00,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 44 transitions. [2021-10-21 19:36:00,761 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 44 transitions. Stem has 43 letters. Loop has 52 letters. [2021-10-21 19:36:00,762 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:36:00,762 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 44 transitions. Stem has 95 letters. Loop has 52 letters. [2021-10-21 19:36:00,763 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:36:00,763 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 44 transitions. Stem has 43 letters. Loop has 104 letters. [2021-10-21 19:36:00,770 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:36:00,771 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 461 states and 502 transitions. [2021-10-21 19:36:00,776 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 57 [2021-10-21 19:36:00,785 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 461 states to 386 states and 420 transitions. [2021-10-21 19:36:00,785 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 88 [2021-10-21 19:36:00,785 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 91 [2021-10-21 19:36:00,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 386 states and 420 transitions. [2021-10-21 19:36:00,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:36:00,786 INFO L681 BuchiCegarLoop]: Abstraction has 386 states and 420 transitions. [2021-10-21 19:36:00,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states and 420 transitions. [2021-10-21 19:36:00,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 326. [2021-10-21 19:36:00,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 326 states have (on average 1.0736196319018405) internal successors, (350), 325 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:36:00,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 350 transitions. [2021-10-21 19:36:00,796 INFO L704 BuchiCegarLoop]: Abstraction has 326 states and 350 transitions. [2021-10-21 19:36:00,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:36:00,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:36:00,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:36:00,797 INFO L87 Difference]: Start difference. First operand 326 states and 350 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:36:00,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:36:00,837 INFO L93 Difference]: Finished difference Result 233 states and 255 transitions. [2021-10-21 19:36:00,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:36:00,837 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 233 states and 255 transitions. [2021-10-21 19:36:00,840 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 59 [2021-10-21 19:36:00,842 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 233 states to 207 states and 229 transitions. [2021-10-21 19:36:00,842 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 57 [2021-10-21 19:36:00,843 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2021-10-21 19:36:00,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 207 states and 229 transitions. [2021-10-21 19:36:00,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:36:00,843 INFO L681 BuchiCegarLoop]: Abstraction has 207 states and 229 transitions. [2021-10-21 19:36:00,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states and 229 transitions. [2021-10-21 19:36:00,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 120. [2021-10-21 19:36:00,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 120 states have (on average 1.1) internal successors, (132), 119 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:36:00,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 132 transitions. [2021-10-21 19:36:00,847 INFO L704 BuchiCegarLoop]: Abstraction has 120 states and 132 transitions. [2021-10-21 19:36:00,848 INFO L587 BuchiCegarLoop]: Abstraction has 120 states and 132 transitions. [2021-10-21 19:36:00,848 INFO L425 BuchiCegarLoop]: ======== Iteration 20============ [2021-10-21 19:36:00,848 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 120 states and 132 transitions. [2021-10-21 19:36:00,849 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 57 [2021-10-21 19:36:00,849 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:36:00,849 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:36:00,851 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 9, 1, 1, 1] [2021-10-21 19:36:00,852 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [14, 13, 13, 10, 4, 1, 1] [2021-10-21 19:36:00,852 INFO L791 eck$LassoCheckResult]: Stem: 6731#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; 6732#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6773#L12 assume !(10 == main_~i~0); 6748#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 6733#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 6734#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6796#L12 assume !(10 == main_~i~0); 6795#L12-2 assume !(0 == main_~i~0); 6794#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 6793#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6792#L12 assume !(10 == main_~i~0); 6791#L12-2 assume !(0 == main_~i~0); 6790#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 6789#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6788#L12 assume !(10 == main_~i~0); 6787#L12-2 assume !(0 == main_~i~0); 6786#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 6785#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6784#L12 assume !(10 == main_~i~0); 6783#L12-2 assume !(0 == main_~i~0); 6782#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 6781#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6780#L12 assume !(10 == main_~i~0); 6779#L12-2 assume !(0 == main_~i~0); 6777#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 6775#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6770#L12 assume !(10 == main_~i~0); 6769#L12-2 assume !(0 == main_~i~0); 6767#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 6765#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6763#L12 assume !(10 == main_~i~0); 6761#L12-2 assume !(0 == main_~i~0); 6759#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 6757#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6755#L12 assume !(10 == main_~i~0); 6753#L12-2 assume !(0 == main_~i~0); 6742#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 6750#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6749#L12 assume !(10 == main_~i~0); 6740#L12-2 assume !(0 == main_~i~0); 6741#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 6797#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6774#L12 assume 10 == main_~i~0;main_~up~0 := 0; 6723#L12-2 [2021-10-21 19:36:00,852 INFO L793 eck$LassoCheckResult]: Loop: 6723#L12-2 assume !(0 == main_~i~0); 6724#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 6768#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6766#L12 assume !(10 == main_~i~0); 6764#L12-2 assume !(0 == main_~i~0); 6762#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 6760#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6758#L12 assume !(10 == main_~i~0); 6756#L12-2 assume !(0 == main_~i~0); 6754#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 6752#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6751#L12 assume !(10 == main_~i~0); 6745#L12-2 assume !(0 == main_~i~0); 6747#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 6746#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6743#L12 assume !(10 == main_~i~0); 6738#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 6737#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 6727#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6728#L12 assume !(10 == main_~i~0); 6735#L12-2 assume !(0 == main_~i~0); 6739#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 6842#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6841#L12 assume !(10 == main_~i~0); 6840#L12-2 assume !(0 == main_~i~0); 6839#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 6838#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6837#L12 assume !(10 == main_~i~0); 6836#L12-2 assume !(0 == main_~i~0); 6835#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 6834#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6833#L12 assume !(10 == main_~i~0); 6832#L12-2 assume !(0 == main_~i~0); 6831#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 6830#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6829#L12 assume !(10 == main_~i~0); 6828#L12-2 assume !(0 == main_~i~0); 6827#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 6826#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6825#L12 assume !(10 == main_~i~0); 6824#L12-2 assume !(0 == main_~i~0); 6823#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 6822#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6821#L12 assume !(10 == main_~i~0); 6820#L12-2 assume !(0 == main_~i~0); 6819#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 6818#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6817#L12 assume !(10 == main_~i~0); 6816#L12-2 assume !(0 == main_~i~0); 6815#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 6814#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6812#L12 assume !(10 == main_~i~0); 6809#L12-2 assume !(0 == main_~i~0); 6810#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 6813#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6811#L12 assume 10 == main_~i~0;main_~up~0 := 0; 6723#L12-2 [2021-10-21 19:36:00,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:36:00,853 INFO L82 PathProgramCache]: Analyzing trace with hash 180435263, now seen corresponding path program 10 times [2021-10-21 19:36:00,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:36:00,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875460195] [2021-10-21 19:36:00,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:36:00,854 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:36:00,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:36:00,865 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:36:00,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:36:00,878 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:36:00,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:36:00,879 INFO L82 PathProgramCache]: Analyzing trace with hash 805924487, now seen corresponding path program 11 times [2021-10-21 19:36:00,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:36:00,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2721524] [2021-10-21 19:36:00,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:36:00,880 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:36:00,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:36:00,890 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:36:00,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:36:00,904 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:36:00,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:36:00,905 INFO L82 PathProgramCache]: Analyzing trace with hash 329635269, now seen corresponding path program 3 times [2021-10-21 19:36:00,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:36:00,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852992106] [2021-10-21 19:36:00,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:36:00,906 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:36:00,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:36:01,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 753 proven. 28 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2021-10-21 19:36:01,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:36:01,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852992106] [2021-10-21 19:36:01,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852992106] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:36:01,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175089764] [2021-10-21 19:36:01,027 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:36:01,028 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:36:01,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:36:01,029 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:36:01,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2021-10-21 19:36:01,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 20 check-sat command(s) [2021-10-21 19:36:01,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:36:01,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-21 19:36:01,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:36:01,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 753 proven. 28 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2021-10-21 19:36:01,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175089764] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:36:01,796 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:36:01,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-10-21 19:36:01,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319956882] [2021-10-21 19:36:02,074 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:36:02,074 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:36:02,074 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:36:02,074 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:36:02,074 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 19:36:02,074 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:36:02,074 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:36:02,074 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:36:02,075 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration20_Loop [2021-10-21 19:36:02,075 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:36:02,075 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:36:02,075 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:36:02,078 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:36:02,082 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:36:02,084 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:36:02,140 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:36:02,140 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 19:36:02,140 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:36:02,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:36:02,142 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:36:02,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (85)] Waiting until timeout for monitored process [2021-10-21 19:36:02,143 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:36:02,143 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:36:02,157 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:36:02,157 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: [] [2021-10-21 19:36:02,181 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (85)] Ended with exit code 0 [2021-10-21 19:36:02,181 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:36:02,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:36:02,182 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:36:02,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (86)] Waiting until timeout for monitored process [2021-10-21 19:36:02,185 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:36:02,185 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:36:02,215 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (86)] Ended with exit code 0 [2021-10-21 19:36:02,216 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:36:02,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:36:02,217 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:36:02,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (87)] Waiting until timeout for monitored process [2021-10-21 19:36:02,219 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 19:36:02,219 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:36:02,228 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 19:36:02,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (87)] Forceful destruction successful, exit code 0 [2021-10-21 19:36:02,250 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:36:02,250 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:36:02,251 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:36:02,251 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:36:02,251 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 19:36:02,251 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:36:02,251 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:36:02,251 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:36:02,251 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration20_Loop [2021-10-21 19:36:02,251 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:36:02,251 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:36:02,252 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:36:02,257 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:36:02,261 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:36:02,263 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:36:02,341 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:36:02,341 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 19:36:02,341 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:36:02,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:36:02,346 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:36:02,349 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:36:02,358 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:36:02,358 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:36:02,359 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:36:02,359 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:36:02,359 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:36:02,360 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:36:02,360 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:36:02,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (88)] Waiting until timeout for monitored process [2021-10-21 19:36:02,373 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 19:36:02,377 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-21 19:36:02,377 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-21 19:36:02,377 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:36:02,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:36:02,379 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:36:02,380 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 19:36:02,381 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 19:36:02,381 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 19:36:02,381 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 + 7 Supporting invariants [] [2021-10-21 19:36:02,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (89)] Waiting until timeout for monitored process [2021-10-21 19:36:02,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (88)] Forceful destruction successful, exit code 0 [2021-10-21 19:36:02,416 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 19:36:02,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:36:02,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:36:02,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:36:02,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:36:02,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:36:02,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 19:36:02,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:36:02,857 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 193 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-10-21 19:36:02,862 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 [2021-10-21 19:36:02,862 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 120 states and 132 transitions. cyclomatic complexity: 16 Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:36:03,106 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 120 states and 132 transitions. cyclomatic complexity: 16. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 549 states and 601 transitions. Complement of second has 23 states. [2021-10-21 19:36:03,107 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 [2021-10-21 19:36:03,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:36:03,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 53 transitions. [2021-10-21 19:36:03,108 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 53 transitions. Stem has 43 letters. Loop has 56 letters. [2021-10-21 19:36:03,108 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:36:03,109 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 53 transitions. Stem has 99 letters. Loop has 56 letters. [2021-10-21 19:36:03,109 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:36:03,109 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 53 transitions. Stem has 43 letters. Loop has 112 letters. [2021-10-21 19:36:03,111 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:36:03,111 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 549 states and 601 transitions. [2021-10-21 19:36:03,117 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 61 [2021-10-21 19:36:03,121 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 549 states to 434 states and 475 transitions. [2021-10-21 19:36:03,121 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 85 [2021-10-21 19:36:03,121 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 88 [2021-10-21 19:36:03,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 434 states and 475 transitions. [2021-10-21 19:36:03,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:36:03,122 INFO L681 BuchiCegarLoop]: Abstraction has 434 states and 475 transitions. [2021-10-21 19:36:03,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states and 475 transitions. [2021-10-21 19:36:03,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 334. [2021-10-21 19:36:03,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 334 states have (on average 1.0748502994011977) internal successors, (359), 333 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:36:03,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 359 transitions. [2021-10-21 19:36:03,132 INFO L704 BuchiCegarLoop]: Abstraction has 334 states and 359 transitions. [2021-10-21 19:36:03,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:36:03,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:36:03,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:36:03,134 INFO L87 Difference]: Start difference. First operand 334 states and 359 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:36:03,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:36:03,173 INFO L93 Difference]: Finished difference Result 261 states and 286 transitions. [2021-10-21 19:36:03,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:36:03,173 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 261 states and 286 transitions. [2021-10-21 19:36:03,176 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 63 [2021-10-21 19:36:03,178 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 261 states to 227 states and 252 transitions. [2021-10-21 19:36:03,179 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 57 [2021-10-21 19:36:03,179 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2021-10-21 19:36:03,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 227 states and 252 transitions. [2021-10-21 19:36:03,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:36:03,179 INFO L681 BuchiCegarLoop]: Abstraction has 227 states and 252 transitions. [2021-10-21 19:36:03,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states and 252 transitions. [2021-10-21 19:36:03,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 128. [2021-10-21 19:36:03,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 128 states have (on average 1.1015625) internal successors, (141), 127 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:36:03,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 141 transitions. [2021-10-21 19:36:03,184 INFO L704 BuchiCegarLoop]: Abstraction has 128 states and 141 transitions. [2021-10-21 19:36:03,184 INFO L587 BuchiCegarLoop]: Abstraction has 128 states and 141 transitions. [2021-10-21 19:36:03,185 INFO L425 BuchiCegarLoop]: ======== Iteration 21============ [2021-10-21 19:36:03,185 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 128 states and 141 transitions. [2021-10-21 19:36:03,186 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 61 [2021-10-21 19:36:03,186 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:36:03,186 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:36:03,187 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 9, 1, 1, 1] [2021-10-21 19:36:03,187 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [15, 14, 14, 10, 5, 1, 1] [2021-10-21 19:36:03,188 INFO L791 eck$LassoCheckResult]: Stem: 8644#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; 8645#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8698#L12 assume !(10 == main_~i~0); 8665#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 8650#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8651#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8717#L12 assume !(10 == main_~i~0); 8716#L12-2 assume !(0 == main_~i~0); 8715#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8714#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8713#L12 assume !(10 == main_~i~0); 8712#L12-2 assume !(0 == main_~i~0); 8711#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8710#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8709#L12 assume !(10 == main_~i~0); 8708#L12-2 assume !(0 == main_~i~0); 8707#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8706#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8705#L12 assume !(10 == main_~i~0); 8704#L12-2 assume !(0 == main_~i~0); 8702#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8700#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8695#L12 assume !(10 == main_~i~0); 8694#L12-2 assume !(0 == main_~i~0); 8692#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8690#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8688#L12 assume !(10 == main_~i~0); 8686#L12-2 assume !(0 == main_~i~0); 8684#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8682#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8680#L12 assume !(10 == main_~i~0); 8678#L12-2 assume !(0 == main_~i~0); 8676#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8674#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8672#L12 assume !(10 == main_~i~0); 8670#L12-2 assume !(0 == main_~i~0); 8659#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8667#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8666#L12 assume !(10 == main_~i~0); 8657#L12-2 assume !(0 == main_~i~0); 8658#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8718#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8699#L12 assume 10 == main_~i~0;main_~up~0 := 0; 8640#L12-2 [2021-10-21 19:36:03,188 INFO L793 eck$LassoCheckResult]: Loop: 8640#L12-2 assume !(0 == main_~i~0); 8641#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 8693#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8691#L12 assume !(10 == main_~i~0); 8689#L12-2 assume !(0 == main_~i~0); 8687#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 8685#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8683#L12 assume !(10 == main_~i~0); 8681#L12-2 assume !(0 == main_~i~0); 8679#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 8677#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8675#L12 assume !(10 == main_~i~0); 8673#L12-2 assume !(0 == main_~i~0); 8671#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 8669#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8668#L12 assume !(10 == main_~i~0); 8662#L12-2 assume !(0 == main_~i~0); 8664#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 8663#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8660#L12 assume !(10 == main_~i~0); 8655#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 8654#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8646#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8647#L12 assume !(10 == main_~i~0); 8652#L12-2 assume !(0 == main_~i~0); 8656#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8767#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8766#L12 assume !(10 == main_~i~0); 8765#L12-2 assume !(0 == main_~i~0); 8764#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8763#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8762#L12 assume !(10 == main_~i~0); 8761#L12-2 assume !(0 == main_~i~0); 8760#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8759#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8758#L12 assume !(10 == main_~i~0); 8757#L12-2 assume !(0 == main_~i~0); 8756#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8755#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8754#L12 assume !(10 == main_~i~0); 8753#L12-2 assume !(0 == main_~i~0); 8752#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8751#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8750#L12 assume !(10 == main_~i~0); 8749#L12-2 assume !(0 == main_~i~0); 8748#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8747#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8746#L12 assume !(10 == main_~i~0); 8745#L12-2 assume !(0 == main_~i~0); 8744#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8743#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8742#L12 assume !(10 == main_~i~0); 8741#L12-2 assume !(0 == main_~i~0); 8740#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8738#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8736#L12 assume !(10 == main_~i~0); 8734#L12-2 assume !(0 == main_~i~0); 8735#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8739#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8737#L12 assume 10 == main_~i~0;main_~up~0 := 0; 8640#L12-2 [2021-10-21 19:36:03,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:36:03,189 INFO L82 PathProgramCache]: Analyzing trace with hash 180435263, now seen corresponding path program 11 times [2021-10-21 19:36:03,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:36:03,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611117862] [2021-10-21 19:36:03,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:36:03,190 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:36:03,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:36:03,210 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:36:03,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:36:03,218 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:36:03,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:36:03,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1151943822, now seen corresponding path program 12 times [2021-10-21 19:36:03,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:36:03,219 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621359978] [2021-10-21 19:36:03,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:36:03,220 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:36:03,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:36:03,232 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:36:03,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:36:03,242 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:36:03,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:36:03,243 INFO L82 PathProgramCache]: Analyzing trace with hash 533812144, now seen corresponding path program 4 times [2021-10-21 19:36:03,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:36:03,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437216672] [2021-10-21 19:36:03,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:36:03,244 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:36:03,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:36:03,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (89)] Forceful destruction successful, exit code 0 [2021-10-21 19:36:03,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1250 backedges. 834 proven. 45 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2021-10-21 19:36:03,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:36:03,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437216672] [2021-10-21 19:36:03,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437216672] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:36:03,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345012244] [2021-10-21 19:36:03,389 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 19:36:03,389 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:36:03,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:36:03,394 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:36:03,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2021-10-21 19:36:03,821 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 19:36:03,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:36:03,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 19:36:03,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:36:04,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1250 backedges. 834 proven. 45 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2021-10-21 19:36:04,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345012244] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:36:04,087 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:36:04,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-10-21 19:36:04,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929928382] [2021-10-21 19:36:04,533 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:36:04,533 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:36:04,533 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:36:04,533 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:36:04,534 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 19:36:04,534 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:36:04,534 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:36:04,534 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:36:04,534 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration21_Loop [2021-10-21 19:36:04,534 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:36:04,535 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:36:04,536 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:36:04,543 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:36:04,546 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:36:04,549 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:36:04,625 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:36:04,626 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 19:36:04,626 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:36:04,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:36:04,627 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:36:04,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (91)] Waiting until timeout for monitored process [2021-10-21 19:36:04,628 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:36:04,628 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:36:04,646 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:36:04,646 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: [] [2021-10-21 19:36:04,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (91)] Forceful destruction successful, exit code 0 [2021-10-21 19:36:04,671 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:36:04,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:36:04,672 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:36:04,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (92)] Waiting until timeout for monitored process [2021-10-21 19:36:04,673 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:36:04,674 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:36:04,689 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:36:04,690 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_19=0} Honda state: {v_rep~unnamed0~0~false_19=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:36:04,713 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (92)] Ended with exit code 0 [2021-10-21 19:36:04,714 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:36:04,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:36:04,715 INFO L229 MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:36:04,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (93)] Waiting until timeout for monitored process [2021-10-21 19:36:04,716 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:36:04,717 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:36:04,731 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:36:04,732 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_19=1} Honda state: {v_rep~unnamed0~0~true_19=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:36:04,755 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (93)] Ended with exit code 0 [2021-10-21 19:36:04,756 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:36:04,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:36:04,757 INFO L229 MonitoredProcess]: Starting monitored process 94 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:36:04,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (94)] Waiting until timeout for monitored process [2021-10-21 19:36:04,758 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:36:04,758 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:36:04,793 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (94)] Ended with exit code 0 [2021-10-21 19:36:04,793 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:36:04,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:36:04,794 INFO L229 MonitoredProcess]: Starting monitored process 95 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:36:04,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (95)] Waiting until timeout for monitored process [2021-10-21 19:36:04,795 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 19:36:04,795 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:36:04,838 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 19:36:04,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (95)] Forceful destruction successful, exit code 0 [2021-10-21 19:36:04,840 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:36:04,841 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:36:04,841 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:36:04,841 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:36:04,841 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 19:36:04,841 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:36:04,841 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:36:04,841 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:36:04,841 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration21_Loop [2021-10-21 19:36:04,841 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:36:04,841 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:36:04,842 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:36:04,846 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:36:04,849 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:36:04,857 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:36:04,921 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:36:04,921 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 19:36:04,921 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:36:04,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:36:04,922 INFO L229 MonitoredProcess]: Starting monitored process 96 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:36:04,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (96)] Waiting until timeout for monitored process [2021-10-21 19:36:04,924 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:36:04,932 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:36:04,932 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:36:04,932 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:36:04,932 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:36:04,934 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 19:36:04,934 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 19:36:04,937 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:36:04,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (96)] Forceful destruction successful, exit code 0 [2021-10-21 19:36:04,961 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:36:04,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:36:04,962 INFO L229 MonitoredProcess]: Starting monitored process 97 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:36:04,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (97)] Waiting until timeout for monitored process [2021-10-21 19:36:04,963 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:36:04,972 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:36:04,972 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:36:04,972 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:36:04,972 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:36:04,973 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 19:36:04,973 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 19:36:04,976 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:36:05,000 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (97)] Ended with exit code 0 [2021-10-21 19:36:05,000 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:36:05,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:36:05,003 INFO L229 MonitoredProcess]: Starting monitored process 98 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:36:05,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (98)] Waiting until timeout for monitored process [2021-10-21 19:36:05,006 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:36:05,014 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:36:05,014 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:36:05,014 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:36:05,014 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-21 19:36:05,015 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:36:05,016 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-21 19:36:05,016 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:36:05,018 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:36:05,042 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (98)] Ended with exit code 0 [2021-10-21 19:36:05,042 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:36:05,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:36:05,043 INFO L229 MonitoredProcess]: Starting monitored process 99 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:36:05,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (99)] Waiting until timeout for monitored process [2021-10-21 19:36:05,045 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:36:05,053 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:36:05,053 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:36:05,053 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:36:05,053 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:36:05,053 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:36:05,054 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:36:05,054 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:36:05,056 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 19:36:05,058 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-21 19:36:05,058 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-21 19:36:05,058 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:36:05,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:36:05,060 INFO L229 MonitoredProcess]: Starting monitored process 100 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:36:05,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (100)] Waiting until timeout for monitored process [2021-10-21 19:36:05,061 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 19:36:05,061 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 19:36:05,061 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 19:36:05,061 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 15 Supporting invariants [] [2021-10-21 19:36:05,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (99)] Forceful destruction successful, exit code 0 [2021-10-21 19:36:05,084 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 19:36:05,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:36:05,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:36:05,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:36:05,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:36:05,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:36:05,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-21 19:36:05,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:36:05,592 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 249 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-10-21 19:36:05,592 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 [2021-10-21 19:36:05,593 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 128 states and 141 transitions. cyclomatic complexity: 17 Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:36:05,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (100)] Forceful destruction successful, exit code 0 [2021-10-21 19:36:06,050 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 128 states and 141 transitions. cyclomatic complexity: 17. Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 653 states and 718 transitions. Complement of second has 27 states. [2021-10-21 19:36:06,051 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 [2021-10-21 19:36:06,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:36:06,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 62 transitions. [2021-10-21 19:36:06,052 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 62 transitions. Stem has 43 letters. Loop has 60 letters. [2021-10-21 19:36:06,053 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:36:06,053 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 62 transitions. Stem has 103 letters. Loop has 60 letters. [2021-10-21 19:36:06,053 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:36:06,053 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 62 transitions. Stem has 43 letters. Loop has 120 letters. [2021-10-21 19:36:06,055 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:36:06,055 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 653 states and 718 transitions. [2021-10-21 19:36:06,061 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 65 [2021-10-21 19:36:06,064 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 653 states to 490 states and 539 transitions. [2021-10-21 19:36:06,065 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 82 [2021-10-21 19:36:06,065 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 85 [2021-10-21 19:36:06,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 490 states and 539 transitions. [2021-10-21 19:36:06,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:36:06,065 INFO L681 BuchiCegarLoop]: Abstraction has 490 states and 539 transitions. [2021-10-21 19:36:06,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states and 539 transitions. [2021-10-21 19:36:06,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 342. [2021-10-21 19:36:06,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 342 states have (on average 1.0760233918128654) internal successors, (368), 341 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:36:06,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 368 transitions. [2021-10-21 19:36:06,074 INFO L704 BuchiCegarLoop]: Abstraction has 342 states and 368 transitions. [2021-10-21 19:36:06,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:36:06,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 19:36:06,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:36:06,075 INFO L87 Difference]: Start difference. First operand 342 states and 368 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:36:06,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:36:06,124 INFO L93 Difference]: Finished difference Result 289 states and 317 transitions. [2021-10-21 19:36:06,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:36:06,125 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 289 states and 317 transitions. [2021-10-21 19:36:06,127 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 67 [2021-10-21 19:36:06,130 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 289 states to 247 states and 275 transitions. [2021-10-21 19:36:06,130 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 57 [2021-10-21 19:36:06,130 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2021-10-21 19:36:06,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 247 states and 275 transitions. [2021-10-21 19:36:06,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:36:06,131 INFO L681 BuchiCegarLoop]: Abstraction has 247 states and 275 transitions. [2021-10-21 19:36:06,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states and 275 transitions. [2021-10-21 19:36:06,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 136. [2021-10-21 19:36:06,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 136 states have (on average 1.1029411764705883) internal successors, (150), 135 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:36:06,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 150 transitions. [2021-10-21 19:36:06,136 INFO L704 BuchiCegarLoop]: Abstraction has 136 states and 150 transitions. [2021-10-21 19:36:06,136 INFO L587 BuchiCegarLoop]: Abstraction has 136 states and 150 transitions. [2021-10-21 19:36:06,136 INFO L425 BuchiCegarLoop]: ======== Iteration 22============ [2021-10-21 19:36:06,136 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 136 states and 150 transitions. [2021-10-21 19:36:06,137 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 65 [2021-10-21 19:36:06,137 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:36:06,137 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:36:06,139 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 9, 1, 1, 1] [2021-10-21 19:36:06,139 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [16, 15, 15, 10, 6, 1, 1] [2021-10-21 19:36:06,139 INFO L791 eck$LassoCheckResult]: Stem: 10742#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; 10743#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10802#L12 assume !(10 == main_~i~0); 10763#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 10748#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10749#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10819#L12 assume !(10 == main_~i~0); 10818#L12-2 assume !(0 == main_~i~0); 10817#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10816#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10815#L12 assume !(10 == main_~i~0); 10814#L12-2 assume !(0 == main_~i~0); 10813#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10812#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10811#L12 assume !(10 == main_~i~0); 10810#L12-2 assume !(0 == main_~i~0); 10809#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10806#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10801#L12 assume !(10 == main_~i~0); 10800#L12-2 assume !(0 == main_~i~0); 10798#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10796#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10794#L12 assume !(10 == main_~i~0); 10792#L12-2 assume !(0 == main_~i~0); 10790#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10788#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10786#L12 assume !(10 == main_~i~0); 10784#L12-2 assume !(0 == main_~i~0); 10782#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10780#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10778#L12 assume !(10 == main_~i~0); 10776#L12-2 assume !(0 == main_~i~0); 10774#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10772#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10770#L12 assume !(10 == main_~i~0); 10768#L12-2 assume !(0 == main_~i~0); 10757#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10765#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10764#L12 assume !(10 == main_~i~0); 10755#L12-2 assume !(0 == main_~i~0); 10756#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10820#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10807#L12 assume 10 == main_~i~0;main_~up~0 := 0; 10738#L12-2 [2021-10-21 19:36:06,139 INFO L793 eck$LassoCheckResult]: Loop: 10738#L12-2 assume !(0 == main_~i~0); 10739#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 10799#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10797#L12 assume !(10 == main_~i~0); 10795#L12-2 assume !(0 == main_~i~0); 10793#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 10791#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10789#L12 assume !(10 == main_~i~0); 10787#L12-2 assume !(0 == main_~i~0); 10785#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 10783#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10781#L12 assume !(10 == main_~i~0); 10779#L12-2 assume !(0 == main_~i~0); 10777#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 10775#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10773#L12 assume !(10 == main_~i~0); 10771#L12-2 assume !(0 == main_~i~0); 10769#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 10767#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10766#L12 assume !(10 == main_~i~0); 10760#L12-2 assume !(0 == main_~i~0); 10762#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 10761#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10758#L12 assume !(10 == main_~i~0); 10753#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 10752#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10744#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10745#L12 assume !(10 == main_~i~0); 10750#L12-2 assume !(0 == main_~i~0); 10754#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10873#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10872#L12 assume !(10 == main_~i~0); 10871#L12-2 assume !(0 == main_~i~0); 10870#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10869#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10868#L12 assume !(10 == main_~i~0); 10867#L12-2 assume !(0 == main_~i~0); 10866#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10865#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10864#L12 assume !(10 == main_~i~0); 10863#L12-2 assume !(0 == main_~i~0); 10862#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10861#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10860#L12 assume !(10 == main_~i~0); 10859#L12-2 assume !(0 == main_~i~0); 10858#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10857#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10856#L12 assume !(10 == main_~i~0); 10855#L12-2 assume !(0 == main_~i~0); 10854#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10853#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10852#L12 assume !(10 == main_~i~0); 10851#L12-2 assume !(0 == main_~i~0); 10850#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10849#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10848#L12 assume !(10 == main_~i~0); 10847#L12-2 assume !(0 == main_~i~0); 10846#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10845#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10843#L12 assume !(10 == main_~i~0); 10840#L12-2 assume !(0 == main_~i~0); 10841#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10844#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10842#L12 assume 10 == main_~i~0;main_~up~0 := 0; 10738#L12-2 [2021-10-21 19:36:06,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:36:06,140 INFO L82 PathProgramCache]: Analyzing trace with hash 180435263, now seen corresponding path program 12 times [2021-10-21 19:36:06,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:36:06,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860213886] [2021-10-21 19:36:06,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:36:06,141 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:36:06,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:36:06,151 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:36:06,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:36:06,158 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:36:06,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:36:06,159 INFO L82 PathProgramCache]: Analyzing trace with hash 336435933, now seen corresponding path program 13 times [2021-10-21 19:36:06,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:36:06,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808898754] [2021-10-21 19:36:06,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:36:06,160 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:36:06,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:36:06,171 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:36:06,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:36:06,181 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:36:06,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:36:06,182 INFO L82 PathProgramCache]: Analyzing trace with hash 216392731, now seen corresponding path program 5 times [2021-10-21 19:36:06,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:36:06,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887291167] [2021-10-21 19:36:06,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:36:06,183 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:36:06,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:36:06,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1352 backedges. 915 proven. 66 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2021-10-21 19:36:06,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:36:06,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887291167] [2021-10-21 19:36:06,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887291167] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:36:06,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466417121] [2021-10-21 19:36:06,317 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-21 19:36:06,317 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:36:06,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:36:06,321 INFO L229 MonitoredProcess]: Starting monitored process 101 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:36:06,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2021-10-21 19:36:06,799 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2021-10-21 19:36:06,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:36:06,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 19:36:06,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:36:07,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1352 backedges. 915 proven. 66 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2021-10-21 19:36:07,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466417121] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:36:07,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:36:07,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-10-21 19:36:07,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880853075] [2021-10-21 19:36:07,577 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:36:07,577 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:36:07,577 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:36:07,577 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:36:07,578 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 19:36:07,578 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:36:07,578 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:36:07,578 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:36:07,578 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration22_Loop [2021-10-21 19:36:07,578 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:36:07,578 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:36:07,579 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:36:07,585 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:36:07,588 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:36:07,596 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:36:07,699 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:36:07,699 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 19:36:07,699 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:36:07,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:36:07,702 INFO L229 MonitoredProcess]: Starting monitored process 102 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:36:07,722 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:36:07,722 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:36:07,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (102)] Waiting until timeout for monitored process [2021-10-21 19:36:07,750 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:36:07,750 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: [] [2021-10-21 19:36:07,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (102)] Forceful destruction successful, exit code 0 [2021-10-21 19:36:07,790 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:36:07,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:36:07,792 INFO L229 MonitoredProcess]: Starting monitored process 103 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:36:07,794 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:36:07,794 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:36:07,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (103)] Waiting until timeout for monitored process [2021-10-21 19:36:07,810 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:36:07,810 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: [] [2021-10-21 19:36:07,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (103)] Forceful destruction successful, exit code 0 [2021-10-21 19:36:07,834 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:36:07,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:36:07,835 INFO L229 MonitoredProcess]: Starting monitored process 104 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:36:07,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (104)] Waiting until timeout for monitored process [2021-10-21 19:36:07,850 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:36:07,850 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:36:07,887 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (104)] Ended with exit code 0 [2021-10-21 19:36:07,887 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:36:07,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:36:07,888 INFO L229 MonitoredProcess]: Starting monitored process 105 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:36:07,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (105)] Waiting until timeout for monitored process [2021-10-21 19:36:07,890 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 19:36:07,890 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:36:07,900 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 19:36:07,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (105)] Forceful destruction successful, exit code 0 [2021-10-21 19:36:07,924 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:36:07,924 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:36:07,924 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:36:07,924 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:36:07,925 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 19:36:07,925 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:36:07,925 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:36:07,925 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:36:07,925 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration22_Loop [2021-10-21 19:36:07,925 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:36:07,925 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:36:07,926 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:36:07,932 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:36:07,937 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:36:07,939 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:36:08,009 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:36:08,010 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 19:36:08,010 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:36:08,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:36:08,011 INFO L229 MonitoredProcess]: Starting monitored process 106 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:36:08,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (106)] Waiting until timeout for monitored process [2021-10-21 19:36:08,012 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:36:08,021 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:36:08,021 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:36:08,021 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:36:08,021 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-21 19:36:08,021 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:36:08,022 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-21 19:36:08,022 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:36:08,024 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:36:08,049 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (106)] Ended with exit code 0 [2021-10-21 19:36:08,049 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:36:08,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:36:08,050 INFO L229 MonitoredProcess]: Starting monitored process 107 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:36:08,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (107)] Waiting until timeout for monitored process [2021-10-21 19:36:08,051 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:36:08,060 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:36:08,061 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:36:08,061 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:36:08,061 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:36:08,062 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 19:36:08,063 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 19:36:08,073 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:36:08,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (107)] Forceful destruction successful, exit code 0 [2021-10-21 19:36:08,115 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:36:08,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:36:08,116 INFO L229 MonitoredProcess]: Starting monitored process 108 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:36:08,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (108)] Waiting until timeout for monitored process [2021-10-21 19:36:08,124 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:36:08,132 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:36:08,133 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:36:08,133 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:36:08,133 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:36:08,135 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 19:36:08,135 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 19:36:08,150 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:36:08,173 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (108)] Ended with exit code 0 [2021-10-21 19:36:08,174 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:36:08,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:36:08,175 INFO L229 MonitoredProcess]: Starting monitored process 109 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:36:08,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (109)] Waiting until timeout for monitored process [2021-10-21 19:36:08,176 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:36:08,184 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:36:08,184 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:36:08,184 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:36:08,184 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:36:08,184 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:36:08,185 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:36:08,185 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:36:08,187 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 19:36:08,189 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-21 19:36:08,190 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-21 19:36:08,190 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:36:08,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:36:08,191 INFO L229 MonitoredProcess]: Starting monitored process 110 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:36:08,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (110)] Waiting until timeout for monitored process [2021-10-21 19:36:08,192 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 19:36:08,192 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 19:36:08,192 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 19:36:08,193 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 + 8 Supporting invariants [] [2021-10-21 19:36:08,217 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (109)] Ended with exit code 0 [2021-10-21 19:36:08,218 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 19:36:08,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:36:08,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:36:08,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:36:08,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:36:08,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:36:08,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-21 19:36:08,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:36:08,686 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 309 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-10-21 19:36:08,688 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 [2021-10-21 19:36:08,688 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 136 states and 150 transitions. cyclomatic complexity: 18 Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:36:09,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (110)] Forceful destruction successful, exit code 0 [2021-10-21 19:36:09,175 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 136 states and 150 transitions. cyclomatic complexity: 18. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 773 states and 853 transitions. Complement of second has 31 states. [2021-10-21 19:36:09,175 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 [2021-10-21 19:36:09,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:36:09,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 71 transitions. [2021-10-21 19:36:09,176 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 71 transitions. Stem has 43 letters. Loop has 64 letters. [2021-10-21 19:36:09,177 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:36:09,177 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 71 transitions. Stem has 107 letters. Loop has 64 letters. [2021-10-21 19:36:09,178 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:36:09,178 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 71 transitions. Stem has 43 letters. Loop has 128 letters. [2021-10-21 19:36:09,179 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:36:09,179 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 773 states and 853 transitions. [2021-10-21 19:36:09,189 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 69 [2021-10-21 19:36:09,193 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 773 states to 554 states and 612 transitions. [2021-10-21 19:36:09,194 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 79 [2021-10-21 19:36:09,194 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 82 [2021-10-21 19:36:09,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 554 states and 612 transitions. [2021-10-21 19:36:09,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:36:09,195 INFO L681 BuchiCegarLoop]: Abstraction has 554 states and 612 transitions. [2021-10-21 19:36:09,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states and 612 transitions. [2021-10-21 19:36:09,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 350. [2021-10-21 19:36:09,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 350 states have (on average 1.0771428571428572) internal successors, (377), 349 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:36:09,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 377 transitions. [2021-10-21 19:36:09,204 INFO L704 BuchiCegarLoop]: Abstraction has 350 states and 377 transitions. [2021-10-21 19:36:09,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:36:09,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 19:36:09,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:36:09,205 INFO L87 Difference]: Start difference. First operand 350 states and 377 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:36:09,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:36:09,253 INFO L93 Difference]: Finished difference Result 317 states and 348 transitions. [2021-10-21 19:36:09,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 19:36:09,253 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 317 states and 348 transitions. [2021-10-21 19:36:09,256 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 71 [2021-10-21 19:36:09,258 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 317 states to 267 states and 298 transitions. [2021-10-21 19:36:09,258 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 57 [2021-10-21 19:36:09,258 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2021-10-21 19:36:09,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 267 states and 298 transitions. [2021-10-21 19:36:09,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:36:09,259 INFO L681 BuchiCegarLoop]: Abstraction has 267 states and 298 transitions. [2021-10-21 19:36:09,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states and 298 transitions. [2021-10-21 19:36:09,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 144. [2021-10-21 19:36:09,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 144 states have (on average 1.1041666666666667) internal successors, (159), 143 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:36:09,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 159 transitions. [2021-10-21 19:36:09,263 INFO L704 BuchiCegarLoop]: Abstraction has 144 states and 159 transitions. [2021-10-21 19:36:09,263 INFO L587 BuchiCegarLoop]: Abstraction has 144 states and 159 transitions. [2021-10-21 19:36:09,264 INFO L425 BuchiCegarLoop]: ======== Iteration 23============ [2021-10-21 19:36:09,264 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 144 states and 159 transitions. [2021-10-21 19:36:09,265 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 69 [2021-10-21 19:36:09,265 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:36:09,265 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:36:09,266 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 9, 1, 1, 1] [2021-10-21 19:36:09,266 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [17, 16, 16, 10, 7, 1, 1] [2021-10-21 19:36:09,267 INFO L791 eck$LassoCheckResult]: Stem: 13041#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; 13042#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13108#L12 assume !(10 == main_~i~0); 13058#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 13043#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13044#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13118#L12 assume !(10 == main_~i~0); 13117#L12-2 assume !(0 == main_~i~0); 13116#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13115#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13114#L12 assume !(10 == main_~i~0); 13112#L12-2 assume !(0 == main_~i~0); 13109#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13105#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13104#L12 assume !(10 == main_~i~0); 13103#L12-2 assume !(0 == main_~i~0); 13101#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13099#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13097#L12 assume !(10 == main_~i~0); 13095#L12-2 assume !(0 == main_~i~0); 13093#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13091#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13089#L12 assume !(10 == main_~i~0); 13087#L12-2 assume !(0 == main_~i~0); 13085#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13083#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13081#L12 assume !(10 == main_~i~0); 13079#L12-2 assume !(0 == main_~i~0); 13077#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13075#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13073#L12 assume !(10 == main_~i~0); 13071#L12-2 assume !(0 == main_~i~0); 13069#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13067#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13065#L12 assume !(10 == main_~i~0); 13063#L12-2 assume !(0 == main_~i~0); 13051#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13060#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13059#L12 assume !(10 == main_~i~0); 13049#L12-2 assume !(0 == main_~i~0); 13050#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13119#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13110#L12 assume 10 == main_~i~0;main_~up~0 := 0; 13033#L12-2 [2021-10-21 19:36:09,267 INFO L793 eck$LassoCheckResult]: Loop: 13033#L12-2 assume !(0 == main_~i~0); 13034#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13102#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13100#L12 assume !(10 == main_~i~0); 13098#L12-2 assume !(0 == main_~i~0); 13096#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13094#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13092#L12 assume !(10 == main_~i~0); 13090#L12-2 assume !(0 == main_~i~0); 13088#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13086#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13084#L12 assume !(10 == main_~i~0); 13082#L12-2 assume !(0 == main_~i~0); 13080#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13078#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13076#L12 assume !(10 == main_~i~0); 13074#L12-2 assume !(0 == main_~i~0); 13072#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13070#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13068#L12 assume !(10 == main_~i~0); 13066#L12-2 assume !(0 == main_~i~0); 13064#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13062#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13061#L12 assume !(10 == main_~i~0); 13055#L12-2 assume !(0 == main_~i~0); 13057#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13056#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13053#L12 assume !(10 == main_~i~0); 13048#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 13047#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13037#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13038#L12 assume !(10 == main_~i~0); 13045#L12-2 assume !(0 == main_~i~0); 13052#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13176#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13175#L12 assume !(10 == main_~i~0); 13174#L12-2 assume !(0 == main_~i~0); 13173#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13172#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13171#L12 assume !(10 == main_~i~0); 13170#L12-2 assume !(0 == main_~i~0); 13169#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13168#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13167#L12 assume !(10 == main_~i~0); 13166#L12-2 assume !(0 == main_~i~0); 13165#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13164#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13163#L12 assume !(10 == main_~i~0); 13162#L12-2 assume !(0 == main_~i~0); 13161#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13160#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13159#L12 assume !(10 == main_~i~0); 13158#L12-2 assume !(0 == main_~i~0); 13157#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13156#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13155#L12 assume !(10 == main_~i~0); 13154#L12-2 assume !(0 == main_~i~0); 13153#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13152#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13151#L12 assume !(10 == main_~i~0); 13150#L12-2 assume !(0 == main_~i~0); 13149#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13147#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13145#L12 assume !(10 == main_~i~0); 13143#L12-2 assume !(0 == main_~i~0); 13144#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13148#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13146#L12 assume 10 == main_~i~0;main_~up~0 := 0; 13033#L12-2 [2021-10-21 19:36:09,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:36:09,267 INFO L82 PathProgramCache]: Analyzing trace with hash 180435263, now seen corresponding path program 13 times [2021-10-21 19:36:09,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:36:09,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841615256] [2021-10-21 19:36:09,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:36:09,268 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:36:09,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:36:09,280 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:36:09,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:36:09,288 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:36:09,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:36:09,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1847643336, now seen corresponding path program 14 times [2021-10-21 19:36:09,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:36:09,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925278881] [2021-10-21 19:36:09,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:36:09,290 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:36:09,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:36:09,300 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:36:09,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:36:09,308 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:36:09,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:36:09,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1125533446, now seen corresponding path program 6 times [2021-10-21 19:36:09,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:36:09,310 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043858354] [2021-10-21 19:36:09,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:36:09,310 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:36:09,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:36:09,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 996 proven. 91 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2021-10-21 19:36:09,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:36:09,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043858354] [2021-10-21 19:36:09,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043858354] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:36:09,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310251651] [2021-10-21 19:36:09,396 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-21 19:36:09,396 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:36:09,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:36:09,402 INFO L229 MonitoredProcess]: Starting monitored process 111 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:36:09,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2021-10-21 19:36:10,213 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2021-10-21 19:36:10,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:36:10,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-21 19:36:10,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:36:10,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 996 proven. 91 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2021-10-21 19:36:10,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310251651] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:36:10,560 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:36:10,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-10-21 19:36:10,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381613092] [2021-10-21 19:36:11,053 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:36:11,053 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:36:11,053 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:36:11,053 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:36:11,054 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 19:36:11,054 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:36:11,054 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:36:11,054 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:36:11,054 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration23_Loop [2021-10-21 19:36:11,054 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:36:11,054 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:36:11,055 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:36:11,059 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:36:11,061 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:36:11,063 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:36:11,112 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:36:11,112 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 19:36:11,112 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:36:11,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:36:11,113 INFO L229 MonitoredProcess]: Starting monitored process 112 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:36:11,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (112)] Waiting until timeout for monitored process [2021-10-21 19:36:11,115 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:36:11,115 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:36:11,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (112)] Forceful destruction successful, exit code 0 [2021-10-21 19:36:11,145 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:36:11,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:36:11,146 INFO L229 MonitoredProcess]: Starting monitored process 113 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:36:11,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (113)] Waiting until timeout for monitored process [2021-10-21 19:36:11,147 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 19:36:11,147 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:36:11,157 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 19:36:11,178 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (113)] Ended with exit code 0 [2021-10-21 19:36:11,178 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:36:11,179 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:36:11,179 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:36:11,179 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:36:11,179 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 19:36:11,179 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:36:11,179 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:36:11,179 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:36:11,179 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration23_Loop [2021-10-21 19:36:11,179 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:36:11,179 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:36:11,180 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:36:11,184 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:36:11,186 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:36:11,199 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:36:11,253 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:36:11,253 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 19:36:11,253 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:36:11,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:36:11,254 INFO L229 MonitoredProcess]: Starting monitored process 114 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:36:11,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (114)] Waiting until timeout for monitored process [2021-10-21 19:36:11,255 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:36:11,263 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:36:11,263 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:36:11,263 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:36:11,263 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:36:11,263 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:36:11,264 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:36:11,264 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:36:11,266 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 19:36:11,267 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-21 19:36:11,267 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-21 19:36:11,268 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:36:11,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:36:11,269 INFO L229 MonitoredProcess]: Starting monitored process 115 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:36:11,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (115)] Waiting until timeout for monitored process [2021-10-21 19:36:11,270 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 19:36:11,270 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 19:36:11,270 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 19:36:11,271 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 17 Supporting invariants [] [2021-10-21 19:36:11,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (114)] Forceful destruction successful, exit code 0 [2021-10-21 19:36:11,291 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 19:36:11,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:36:11,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:36:11,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:36:11,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:36:11,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:36:11,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 19:36:11,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:36:11,699 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 373 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-10-21 19:36:11,700 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 [2021-10-21 19:36:11,700 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 144 states and 159 transitions. cyclomatic complexity: 19 Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:36:12,150 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 144 states and 159 transitions. cyclomatic complexity: 19. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 909 states and 1006 transitions. Complement of second has 35 states. [2021-10-21 19:36:12,151 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 [2021-10-21 19:36:12,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:36:12,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 80 transitions. [2021-10-21 19:36:12,151 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 18 states and 80 transitions. Stem has 43 letters. Loop has 68 letters. [2021-10-21 19:36:12,152 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:36:12,153 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 18 states and 80 transitions. Stem has 111 letters. Loop has 68 letters. [2021-10-21 19:36:12,159 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:36:12,170 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 18 states and 80 transitions. Stem has 43 letters. Loop has 136 letters. [2021-10-21 19:36:12,172 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:36:12,172 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 909 states and 1006 transitions. [2021-10-21 19:36:12,195 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 73 [2021-10-21 19:36:12,199 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 909 states to 626 states and 694 transitions. [2021-10-21 19:36:12,199 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 76 [2021-10-21 19:36:12,200 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 79 [2021-10-21 19:36:12,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 626 states and 694 transitions. [2021-10-21 19:36:12,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:36:12,200 INFO L681 BuchiCegarLoop]: Abstraction has 626 states and 694 transitions. [2021-10-21 19:36:12,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states and 694 transitions. [2021-10-21 19:36:12,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 358. [2021-10-21 19:36:12,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 358 states have (on average 1.0782122905027933) internal successors, (386), 357 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:36:12,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 386 transitions. [2021-10-21 19:36:12,209 INFO L704 BuchiCegarLoop]: Abstraction has 358 states and 386 transitions. [2021-10-21 19:36:12,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:36:12,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 19:36:12,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:36:12,210 INFO L87 Difference]: Start difference. First operand 358 states and 386 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:36:12,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (115)] Forceful destruction successful, exit code 0 [2021-10-21 19:36:12,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:36:12,270 INFO L93 Difference]: Finished difference Result 345 states and 379 transitions. [2021-10-21 19:36:12,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 19:36:12,271 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 345 states and 379 transitions. [2021-10-21 19:36:12,274 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 75 [2021-10-21 19:36:12,276 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 345 states to 287 states and 321 transitions. [2021-10-21 19:36:12,276 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 57 [2021-10-21 19:36:12,277 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2021-10-21 19:36:12,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 287 states and 321 transitions. [2021-10-21 19:36:12,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:36:12,277 INFO L681 BuchiCegarLoop]: Abstraction has 287 states and 321 transitions. [2021-10-21 19:36:12,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states and 321 transitions. [2021-10-21 19:36:12,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 152. [2021-10-21 19:36:12,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 152 states have (on average 1.105263157894737) internal successors, (168), 151 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:36:12,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 168 transitions. [2021-10-21 19:36:12,282 INFO L704 BuchiCegarLoop]: Abstraction has 152 states and 168 transitions. [2021-10-21 19:36:12,282 INFO L587 BuchiCegarLoop]: Abstraction has 152 states and 168 transitions. [2021-10-21 19:36:12,282 INFO L425 BuchiCegarLoop]: ======== Iteration 24============ [2021-10-21 19:36:12,282 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 152 states and 168 transitions. [2021-10-21 19:36:12,284 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 73 [2021-10-21 19:36:12,284 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:36:12,284 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:36:12,285 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 9, 1, 1, 1] [2021-10-21 19:36:12,285 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [18, 17, 17, 10, 8, 1, 1] [2021-10-21 19:36:12,285 INFO L791 eck$LassoCheckResult]: Stem: 15549#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; 15550#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15623#L12 assume !(10 == main_~i~0); 15566#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 15551#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15552#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15630#L12 assume !(10 == main_~i~0); 15629#L12-2 assume !(0 == main_~i~0); 15627#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15625#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15620#L12 assume !(10 == main_~i~0); 15619#L12-2 assume !(0 == main_~i~0); 15617#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15615#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15613#L12 assume !(10 == main_~i~0); 15611#L12-2 assume !(0 == main_~i~0); 15609#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15607#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15605#L12 assume !(10 == main_~i~0); 15603#L12-2 assume !(0 == main_~i~0); 15601#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15599#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15597#L12 assume !(10 == main_~i~0); 15595#L12-2 assume !(0 == main_~i~0); 15593#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15591#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15589#L12 assume !(10 == main_~i~0); 15587#L12-2 assume !(0 == main_~i~0); 15585#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15583#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15581#L12 assume !(10 == main_~i~0); 15579#L12-2 assume !(0 == main_~i~0); 15577#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15575#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15573#L12 assume !(10 == main_~i~0); 15571#L12-2 assume !(0 == main_~i~0); 15560#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15568#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15567#L12 assume !(10 == main_~i~0); 15558#L12-2 assume !(0 == main_~i~0); 15559#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15631#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15624#L12 assume 10 == main_~i~0;main_~up~0 := 0; 15541#L12-2 [2021-10-21 19:36:12,285 INFO L793 eck$LassoCheckResult]: Loop: 15541#L12-2 assume !(0 == main_~i~0); 15542#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 15618#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15616#L12 assume !(10 == main_~i~0); 15614#L12-2 assume !(0 == main_~i~0); 15612#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 15610#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15608#L12 assume !(10 == main_~i~0); 15606#L12-2 assume !(0 == main_~i~0); 15604#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 15602#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15600#L12 assume !(10 == main_~i~0); 15598#L12-2 assume !(0 == main_~i~0); 15596#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 15594#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15592#L12 assume !(10 == main_~i~0); 15590#L12-2 assume !(0 == main_~i~0); 15588#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 15586#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15584#L12 assume !(10 == main_~i~0); 15582#L12-2 assume !(0 == main_~i~0); 15580#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 15578#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15576#L12 assume !(10 == main_~i~0); 15574#L12-2 assume !(0 == main_~i~0); 15572#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 15570#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15569#L12 assume !(10 == main_~i~0); 15563#L12-2 assume !(0 == main_~i~0); 15565#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 15564#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15561#L12 assume !(10 == main_~i~0); 15556#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 15555#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15545#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15546#L12 assume !(10 == main_~i~0); 15553#L12-2 assume !(0 == main_~i~0); 15557#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15692#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15691#L12 assume !(10 == main_~i~0); 15690#L12-2 assume !(0 == main_~i~0); 15689#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15688#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15687#L12 assume !(10 == main_~i~0); 15686#L12-2 assume !(0 == main_~i~0); 15685#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15684#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15683#L12 assume !(10 == main_~i~0); 15682#L12-2 assume !(0 == main_~i~0); 15681#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15680#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15679#L12 assume !(10 == main_~i~0); 15678#L12-2 assume !(0 == main_~i~0); 15677#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15676#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15675#L12 assume !(10 == main_~i~0); 15674#L12-2 assume !(0 == main_~i~0); 15673#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15672#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15671#L12 assume !(10 == main_~i~0); 15670#L12-2 assume !(0 == main_~i~0); 15669#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15668#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15667#L12 assume !(10 == main_~i~0); 15666#L12-2 assume !(0 == main_~i~0); 15665#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15663#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15661#L12 assume !(10 == main_~i~0); 15659#L12-2 assume !(0 == main_~i~0); 15660#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 15664#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15662#L12 assume 10 == main_~i~0;main_~up~0 := 0; 15541#L12-2 [2021-10-21 19:36:12,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:36:12,286 INFO L82 PathProgramCache]: Analyzing trace with hash 180435263, now seen corresponding path program 14 times [2021-10-21 19:36:12,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:36:12,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742070455] [2021-10-21 19:36:12,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:36:12,287 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:36:12,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:36:12,298 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:36:12,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:36:12,312 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:36:12,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:36:12,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1176703283, now seen corresponding path program 15 times [2021-10-21 19:36:12,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:36:12,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465054136] [2021-10-21 19:36:12,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:36:12,313 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:36:12,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:36:12,326 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:36:12,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:36:12,335 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:36:12,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:36:12,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1395997809, now seen corresponding path program 7 times [2021-10-21 19:36:12,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:36:12,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752873869] [2021-10-21 19:36:12,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:36:12,338 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:36:12,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:36:12,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1568 backedges. 1077 proven. 120 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2021-10-21 19:36:12,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:36:12,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752873869] [2021-10-21 19:36:12,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752873869] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:36:12,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939896652] [2021-10-21 19:36:12,449 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-21 19:36:12,449 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:36:12,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:36:12,454 INFO L229 MonitoredProcess]: Starting monitored process 116 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:36:12,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2021-10-21 19:36:13,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:36:13,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-21 19:36:13,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:36:13,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1568 backedges. 1077 proven. 120 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2021-10-21 19:36:13,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939896652] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:36:13,485 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:36:13,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-10-21 19:36:13,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158905274] [2021-10-21 19:36:13,865 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:36:13,865 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:36:13,865 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:36:13,865 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:36:13,865 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 19:36:13,865 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:36:13,865 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:36:13,865 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:36:13,866 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration24_Loop [2021-10-21 19:36:13,866 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:36:13,866 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:36:13,866 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:36:13,873 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:36:13,875 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:36:13,877 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:36:13,942 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:36:13,942 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 19:36:13,943 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:36:13,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:36:13,944 INFO L229 MonitoredProcess]: Starting monitored process 117 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:36:13,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (117)] Waiting until timeout for monitored process [2021-10-21 19:36:13,945 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:36:13,945 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:36:13,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (117)] Forceful destruction successful, exit code 0 [2021-10-21 19:36:13,977 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:36:13,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:36:13,978 INFO L229 MonitoredProcess]: Starting monitored process 118 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:36:13,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (118)] Waiting until timeout for monitored process [2021-10-21 19:36:13,979 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 19:36:13,979 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:36:13,988 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 19:36:14,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (118)] Forceful destruction successful, exit code 0 [2021-10-21 19:36:14,008 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:36:14,008 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:36:14,009 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:36:14,009 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:36:14,009 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 19:36:14,009 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:36:14,009 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:36:14,009 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:36:14,009 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration24_Loop [2021-10-21 19:36:14,009 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:36:14,009 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:36:14,010 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:36:14,014 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:36:14,021 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:36:14,023 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:36:14,078 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:36:14,078 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 19:36:14,079 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:36:14,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:36:14,079 INFO L229 MonitoredProcess]: Starting monitored process 119 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:36:14,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (119)] Waiting until timeout for monitored process [2021-10-21 19:36:14,082 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:36:14,089 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:36:14,090 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:36:14,090 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:36:14,090 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:36:14,091 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 19:36:14,091 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 19:36:14,093 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:36:14,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (119)] Forceful destruction successful, exit code 0 [2021-10-21 19:36:14,113 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:36:14,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:36:14,116 INFO L229 MonitoredProcess]: Starting monitored process 120 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:36:14,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (120)] Waiting until timeout for monitored process [2021-10-21 19:36:14,117 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:36:14,124 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:36:14,124 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:36:14,125 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:36:14,125 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:36:14,125 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:36:14,125 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:36:14,125 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:36:14,127 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 19:36:14,129 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-21 19:36:14,129 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-21 19:36:14,129 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:36:14,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:36:14,130 INFO L229 MonitoredProcess]: Starting monitored process 121 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:36:14,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (121)] Waiting until timeout for monitored process [2021-10-21 19:36:14,131 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 19:36:14,131 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 19:36:14,131 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 19:36:14,131 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 + 9 Supporting invariants [] [2021-10-21 19:36:14,155 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (120)] Ended with exit code 0 [2021-10-21 19:36:14,155 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 19:36:14,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:36:14,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:36:14,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:36:14,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:36:14,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:36:14,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-21 19:36:14,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:36:14,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (121)] Forceful destruction successful, exit code 0 [2021-10-21 19:36:14,558 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-10-21 19:36:14,559 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 [2021-10-21 19:36:14,559 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 152 states and 168 transitions. cyclomatic complexity: 20 Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:36:14,939 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 152 states and 168 transitions. cyclomatic complexity: 20. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 1066 states and 1182 transitions. Complement of second has 39 states. [2021-10-21 19:36:14,939 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 [2021-10-21 19:36:14,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:36:14,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 89 transitions. [2021-10-21 19:36:14,940 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 89 transitions. Stem has 43 letters. Loop has 72 letters. [2021-10-21 19:36:14,941 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:36:14,941 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 89 transitions. Stem has 115 letters. Loop has 72 letters. [2021-10-21 19:36:14,941 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:36:14,941 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 89 transitions. Stem has 43 letters. Loop has 144 letters. [2021-10-21 19:36:14,942 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:36:14,942 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1066 states and 1182 transitions. [2021-10-21 19:36:14,950 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 77 [2021-10-21 19:36:14,955 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1066 states to 711 states and 790 transitions. [2021-10-21 19:36:14,955 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 73 [2021-10-21 19:36:14,955 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 76 [2021-10-21 19:36:14,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 711 states and 790 transitions. [2021-10-21 19:36:14,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:36:14,956 INFO L681 BuchiCegarLoop]: Abstraction has 711 states and 790 transitions. [2021-10-21 19:36:14,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states and 790 transitions. [2021-10-21 19:36:14,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 370. [2021-10-21 19:36:14,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 370 states have (on average 1.0783783783783785) internal successors, (399), 369 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:36:14,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 399 transitions. [2021-10-21 19:36:14,965 INFO L704 BuchiCegarLoop]: Abstraction has 370 states and 399 transitions. [2021-10-21 19:36:14,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:36:14,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 19:36:14,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:36:14,966 INFO L87 Difference]: Start difference. First operand 370 states and 399 transitions. Second operand has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:36:15,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:36:15,026 INFO L93 Difference]: Finished difference Result 373 states and 410 transitions. [2021-10-21 19:36:15,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 19:36:15,026 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 373 states and 410 transitions. [2021-10-21 19:36:15,029 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 79 [2021-10-21 19:36:15,031 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 373 states to 307 states and 344 transitions. [2021-10-21 19:36:15,031 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 57 [2021-10-21 19:36:15,031 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2021-10-21 19:36:15,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 307 states and 344 transitions. [2021-10-21 19:36:15,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:36:15,032 INFO L681 BuchiCegarLoop]: Abstraction has 307 states and 344 transitions. [2021-10-21 19:36:15,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states and 344 transitions. [2021-10-21 19:36:15,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 160. [2021-10-21 19:36:15,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 160 states have (on average 1.10625) internal successors, (177), 159 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:36:15,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 177 transitions. [2021-10-21 19:36:15,036 INFO L704 BuchiCegarLoop]: Abstraction has 160 states and 177 transitions. [2021-10-21 19:36:15,037 INFO L587 BuchiCegarLoop]: Abstraction has 160 states and 177 transitions. [2021-10-21 19:36:15,037 INFO L425 BuchiCegarLoop]: ======== Iteration 25============ [2021-10-21 19:36:15,037 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 160 states and 177 transitions. [2021-10-21 19:36:15,038 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 77 [2021-10-21 19:36:15,038 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:36:15,038 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:36:15,039 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 9, 1, 1, 1] [2021-10-21 19:36:15,039 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [19, 18, 18, 10, 9, 1, 1] [2021-10-21 19:36:15,039 INFO L791 eck$LassoCheckResult]: Stem: 18295#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; 18296#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18378#L12 assume !(10 == main_~i~0); 18313#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 18297#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18298#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18375#L12 assume !(10 == main_~i~0); 18374#L12-2 assume !(0 == main_~i~0); 18372#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18370#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18368#L12 assume !(10 == main_~i~0); 18366#L12-2 assume !(0 == main_~i~0); 18364#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18362#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18360#L12 assume !(10 == main_~i~0); 18358#L12-2 assume !(0 == main_~i~0); 18356#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18354#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18352#L12 assume !(10 == main_~i~0); 18350#L12-2 assume !(0 == main_~i~0); 18348#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18346#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18344#L12 assume !(10 == main_~i~0); 18342#L12-2 assume !(0 == main_~i~0); 18340#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18338#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18336#L12 assume !(10 == main_~i~0); 18334#L12-2 assume !(0 == main_~i~0); 18332#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18330#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18328#L12 assume !(10 == main_~i~0); 18326#L12-2 assume !(0 == main_~i~0); 18324#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18322#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18320#L12 assume !(10 == main_~i~0); 18318#L12-2 assume !(0 == main_~i~0); 18307#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18315#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18314#L12 assume !(10 == main_~i~0); 18305#L12-2 assume !(0 == main_~i~0); 18306#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18382#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18379#L12 assume 10 == main_~i~0;main_~up~0 := 0; 18287#L12-2 [2021-10-21 19:36:15,040 INFO L793 eck$LassoCheckResult]: Loop: 18287#L12-2 assume !(0 == main_~i~0); 18288#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 18373#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18371#L12 assume !(10 == main_~i~0); 18369#L12-2 assume !(0 == main_~i~0); 18367#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 18365#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18363#L12 assume !(10 == main_~i~0); 18361#L12-2 assume !(0 == main_~i~0); 18359#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 18357#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18355#L12 assume !(10 == main_~i~0); 18353#L12-2 assume !(0 == main_~i~0); 18351#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 18349#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18347#L12 assume !(10 == main_~i~0); 18345#L12-2 assume !(0 == main_~i~0); 18343#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 18341#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18339#L12 assume !(10 == main_~i~0); 18337#L12-2 assume !(0 == main_~i~0); 18335#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 18333#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18331#L12 assume !(10 == main_~i~0); 18329#L12-2 assume !(0 == main_~i~0); 18327#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 18325#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18323#L12 assume !(10 == main_~i~0); 18321#L12-2 assume !(0 == main_~i~0); 18319#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 18317#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18316#L12 assume !(10 == main_~i~0); 18310#L12-2 assume !(0 == main_~i~0); 18312#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 18311#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18308#L12 assume !(10 == main_~i~0); 18303#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 18304#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18291#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18292#L12 assume !(10 == main_~i~0); 18299#L12-2 assume !(0 == main_~i~0); 18301#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18302#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18446#L12 assume !(10 == main_~i~0); 18445#L12-2 assume !(0 == main_~i~0); 18444#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18443#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18442#L12 assume !(10 == main_~i~0); 18441#L12-2 assume !(0 == main_~i~0); 18440#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18439#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18438#L12 assume !(10 == main_~i~0); 18437#L12-2 assume !(0 == main_~i~0); 18436#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18435#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18434#L12 assume !(10 == main_~i~0); 18433#L12-2 assume !(0 == main_~i~0); 18432#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18431#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18430#L12 assume !(10 == main_~i~0); 18429#L12-2 assume !(0 == main_~i~0); 18428#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18427#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18426#L12 assume !(10 == main_~i~0); 18425#L12-2 assume !(0 == main_~i~0); 18424#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18423#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18422#L12 assume !(10 == main_~i~0); 18421#L12-2 assume !(0 == main_~i~0); 18420#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18418#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18416#L12 assume !(10 == main_~i~0); 18414#L12-2 assume !(0 == main_~i~0); 18415#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 18419#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18417#L12 assume 10 == main_~i~0;main_~up~0 := 0; 18287#L12-2 [2021-10-21 19:36:15,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:36:15,040 INFO L82 PathProgramCache]: Analyzing trace with hash 180435263, now seen corresponding path program 15 times [2021-10-21 19:36:15,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:36:15,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533604612] [2021-10-21 19:36:15,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:36:15,041 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:36:15,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:36:15,065 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:36:15,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:36:15,070 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:36:15,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:36:15,071 INFO L82 PathProgramCache]: Analyzing trace with hash 289875998, now seen corresponding path program 16 times [2021-10-21 19:36:15,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:36:15,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573394924] [2021-10-21 19:36:15,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:36:15,071 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:36:15,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:36:15,083 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:36:15,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:36:15,092 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:36:15,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:36:15,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1498053540, now seen corresponding path program 8 times [2021-10-21 19:36:15,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:36:15,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917905072] [2021-10-21 19:36:15,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:36:15,094 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:36:15,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:36:15,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1682 backedges. 1158 proven. 153 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2021-10-21 19:36:15,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:36:15,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917905072] [2021-10-21 19:36:15,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917905072] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:36:15,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632332068] [2021-10-21 19:36:15,193 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:36:15,193 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:36:15,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:36:15,194 INFO L229 MonitoredProcess]: Starting monitored process 122 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:36:15,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2021-10-21 19:36:15,778 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:36:15,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:36:15,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 19:36:15,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:36:16,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1682 backedges. 1158 proven. 153 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2021-10-21 19:36:16,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632332068] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:36:16,042 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:36:16,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2021-10-21 19:36:16,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832899533] [2021-10-21 19:36:16,515 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:36:16,515 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:36:16,515 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:36:16,515 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:36:16,515 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 19:36:16,516 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:36:16,516 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:36:16,516 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:36:16,516 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration25_Loop [2021-10-21 19:36:16,516 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:36:16,516 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:36:16,516 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:36:16,519 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:36:16,522 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:36:16,526 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:36:16,578 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:36:16,578 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 19:36:16,579 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:36:16,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:36:16,580 INFO L229 MonitoredProcess]: Starting monitored process 123 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:36:16,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (123)] Waiting until timeout for monitored process [2021-10-21 19:36:16,581 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:36:16,582 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:36:16,595 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:36:16,595 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: [] [2021-10-21 19:36:16,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (123)] Forceful destruction successful, exit code 0 [2021-10-21 19:36:16,617 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:36:16,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:36:16,617 INFO L229 MonitoredProcess]: Starting monitored process 124 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:36:16,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (124)] Waiting until timeout for monitored process [2021-10-21 19:36:16,619 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:36:16,619 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:36:16,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (124)] Forceful destruction successful, exit code 0 [2021-10-21 19:36:16,649 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:36:16,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:36:16,650 INFO L229 MonitoredProcess]: Starting monitored process 125 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:36:16,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (125)] Waiting until timeout for monitored process [2021-10-21 19:36:16,652 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 19:36:16,652 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:36:16,662 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 19:36:16,684 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (125)] Ended with exit code 0 [2021-10-21 19:36:16,684 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:36:16,684 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:36:16,684 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:36:16,684 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:36:16,684 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 19:36:16,684 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:36:16,685 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:36:16,685 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:36:16,685 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration25_Loop [2021-10-21 19:36:16,685 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:36:16,685 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:36:16,685 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:36:16,688 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:36:16,692 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:36:16,696 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:36:16,743 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:36:16,743 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 19:36:16,744 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:36:16,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:36:16,744 INFO L229 MonitoredProcess]: Starting monitored process 126 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:36:16,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (126)] Waiting until timeout for monitored process [2021-10-21 19:36:16,745 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:36:16,753 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:36:16,753 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:36:16,753 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:36:16,753 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:36:16,754 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 19:36:16,754 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 19:36:16,756 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:36:16,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (126)] Forceful destruction successful, exit code 0 [2021-10-21 19:36:16,777 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:36:16,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:36:16,778 INFO L229 MonitoredProcess]: Starting monitored process 127 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:36:16,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (127)] Waiting until timeout for monitored process [2021-10-21 19:36:16,779 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:36:16,787 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:36:16,787 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:36:16,787 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:36:16,787 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:36:16,787 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:36:16,788 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:36:16,788 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:36:16,789 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 19:36:16,791 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-21 19:36:16,791 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-21 19:36:16,791 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:36:16,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:36:16,793 INFO L229 MonitoredProcess]: Starting monitored process 128 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:36:16,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (128)] Waiting until timeout for monitored process [2021-10-21 19:36:16,798 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 19:36:16,798 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 19:36:16,798 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 19:36:16,798 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 19 Supporting invariants [] [2021-10-21 19:36:16,819 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (127)] Ended with exit code 0 [2021-10-21 19:36:16,819 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 19:36:16,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:36:16,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:36:16,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:36:16,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:36:16,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:36:16,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-21 19:36:16,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:36:17,297 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 513 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-10-21 19:36:17,297 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 [2021-10-21 19:36:17,297 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 160 states and 177 transitions. cyclomatic complexity: 21 Second operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:36:17,398 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (128)] Ended with exit code 0 [2021-10-21 19:36:17,912 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 160 states and 177 transitions. cyclomatic complexity: 21. Second operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 1253 states and 1393 transitions. Complement of second has 43 states. [2021-10-21 19:36:17,913 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 [2021-10-21 19:36:17,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:36:17,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 98 transitions. [2021-10-21 19:36:17,913 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 22 states and 98 transitions. Stem has 43 letters. Loop has 76 letters. [2021-10-21 19:36:17,914 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:36:17,914 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 22 states and 98 transitions. Stem has 119 letters. Loop has 76 letters. [2021-10-21 19:36:17,914 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:36:17,915 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 22 states and 98 transitions. Stem has 43 letters. Loop has 152 letters. [2021-10-21 19:36:17,915 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:36:17,915 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1253 states and 1393 transitions. [2021-10-21 19:36:17,924 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 81 [2021-10-21 19:36:17,929 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1253 states to 817 states and 911 transitions. [2021-10-21 19:36:17,929 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 74 [2021-10-21 19:36:17,930 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 78 [2021-10-21 19:36:17,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 817 states and 911 transitions. [2021-10-21 19:36:17,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:36:17,930 INFO L681 BuchiCegarLoop]: Abstraction has 817 states and 911 transitions. [2021-10-21 19:36:17,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states and 911 transitions. [2021-10-21 19:36:17,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 394. [2021-10-21 19:36:17,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 394 states have (on average 1.0812182741116751) internal successors, (426), 393 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:36:17,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 426 transitions. [2021-10-21 19:36:17,940 INFO L704 BuchiCegarLoop]: Abstraction has 394 states and 426 transitions. [2021-10-21 19:36:17,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:36:17,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-21 19:36:17,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-21 19:36:17,941 INFO L87 Difference]: Start difference. First operand 394 states and 426 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:36:17,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:36:17,998 INFO L93 Difference]: Finished difference Result 401 states and 441 transitions. [2021-10-21 19:36:17,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 19:36:17,998 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 401 states and 441 transitions. [2021-10-21 19:36:18,001 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 83 [2021-10-21 19:36:18,003 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 401 states to 327 states and 367 transitions. [2021-10-21 19:36:18,003 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 57 [2021-10-21 19:36:18,004 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2021-10-21 19:36:18,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 327 states and 367 transitions. [2021-10-21 19:36:18,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:36:18,004 INFO L681 BuchiCegarLoop]: Abstraction has 327 states and 367 transitions. [2021-10-21 19:36:18,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states and 367 transitions. [2021-10-21 19:36:18,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 168. [2021-10-21 19:36:18,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 168 states have (on average 1.1071428571428572) internal successors, (186), 167 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:36:18,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 186 transitions. [2021-10-21 19:36:18,009 INFO L704 BuchiCegarLoop]: Abstraction has 168 states and 186 transitions. [2021-10-21 19:36:18,009 INFO L587 BuchiCegarLoop]: Abstraction has 168 states and 186 transitions. [2021-10-21 19:36:18,009 INFO L425 BuchiCegarLoop]: ======== Iteration 26============ [2021-10-21 19:36:18,009 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 168 states and 186 transitions. [2021-10-21 19:36:18,010 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2021-10-21 19:36:18,010 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:36:18,010 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:36:18,011 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 9, 1, 1, 1] [2021-10-21 19:36:18,011 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [20, 19, 19, 10, 10, 1, 1] [2021-10-21 19:36:18,012 INFO L791 eck$LassoCheckResult]: Stem: 21321#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; 21322#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21406#L12 assume !(10 == main_~i~0); 21338#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 21323#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21324#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21401#L12 assume !(10 == main_~i~0); 21399#L12-2 assume !(0 == main_~i~0); 21397#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21395#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21393#L12 assume !(10 == main_~i~0); 21391#L12-2 assume !(0 == main_~i~0); 21389#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21387#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21385#L12 assume !(10 == main_~i~0); 21383#L12-2 assume !(0 == main_~i~0); 21381#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21379#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21377#L12 assume !(10 == main_~i~0); 21375#L12-2 assume !(0 == main_~i~0); 21373#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21371#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21369#L12 assume !(10 == main_~i~0); 21367#L12-2 assume !(0 == main_~i~0); 21365#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21363#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21361#L12 assume !(10 == main_~i~0); 21359#L12-2 assume !(0 == main_~i~0); 21357#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21355#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21353#L12 assume !(10 == main_~i~0); 21351#L12-2 assume !(0 == main_~i~0); 21349#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21347#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21345#L12 assume !(10 == main_~i~0); 21343#L12-2 assume !(0 == main_~i~0); 21332#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21340#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21339#L12 assume !(10 == main_~i~0); 21330#L12-2 assume !(0 == main_~i~0); 21331#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21411#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21405#L12 assume 10 == main_~i~0;main_~up~0 := 0; 21313#L12-2 [2021-10-21 19:36:18,012 INFO L793 eck$LassoCheckResult]: Loop: 21313#L12-2 assume !(0 == main_~i~0); 21314#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 21404#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21403#L12 assume !(10 == main_~i~0); 21402#L12-2 assume !(0 == main_~i~0); 21400#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 21398#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21396#L12 assume !(10 == main_~i~0); 21394#L12-2 assume !(0 == main_~i~0); 21392#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 21390#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21388#L12 assume !(10 == main_~i~0); 21386#L12-2 assume !(0 == main_~i~0); 21384#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 21382#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21380#L12 assume !(10 == main_~i~0); 21378#L12-2 assume !(0 == main_~i~0); 21376#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 21374#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21372#L12 assume !(10 == main_~i~0); 21370#L12-2 assume !(0 == main_~i~0); 21368#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 21366#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21364#L12 assume !(10 == main_~i~0); 21362#L12-2 assume !(0 == main_~i~0); 21360#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 21358#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21356#L12 assume !(10 == main_~i~0); 21354#L12-2 assume !(0 == main_~i~0); 21352#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 21350#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21348#L12 assume !(10 == main_~i~0); 21346#L12-2 assume !(0 == main_~i~0); 21344#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 21342#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21341#L12 assume !(10 == main_~i~0); 21335#L12-2 assume !(0 == main_~i~0); 21337#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 21336#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21333#L12 assume !(10 == main_~i~0); 21328#L12-2 assume 0 == main_~i~0;main_~up~0 := 1; 21327#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21317#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21318#L12 assume !(10 == main_~i~0); 21325#L12-2 assume !(0 == main_~i~0); 21329#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21480#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21479#L12 assume !(10 == main_~i~0); 21478#L12-2 assume !(0 == main_~i~0); 21477#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21476#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21475#L12 assume !(10 == main_~i~0); 21474#L12-2 assume !(0 == main_~i~0); 21473#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21472#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21471#L12 assume !(10 == main_~i~0); 21470#L12-2 assume !(0 == main_~i~0); 21469#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21468#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21467#L12 assume !(10 == main_~i~0); 21466#L12-2 assume !(0 == main_~i~0); 21465#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21464#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21463#L12 assume !(10 == main_~i~0); 21462#L12-2 assume !(0 == main_~i~0); 21461#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21460#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21459#L12 assume !(10 == main_~i~0); 21458#L12-2 assume !(0 == main_~i~0); 21457#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21456#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21455#L12 assume !(10 == main_~i~0); 21454#L12-2 assume !(0 == main_~i~0); 21453#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21452#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21450#L12 assume !(10 == main_~i~0); 21447#L12-2 assume !(0 == main_~i~0); 21448#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 21451#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21449#L12 assume 10 == main_~i~0;main_~up~0 := 0; 21313#L12-2 [2021-10-21 19:36:18,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:36:18,012 INFO L82 PathProgramCache]: Analyzing trace with hash 180435263, now seen corresponding path program 16 times [2021-10-21 19:36:18,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:36:18,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833374667] [2021-10-21 19:36:18,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:36:18,013 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:36:18,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:36:18,023 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:36:18,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:36:18,028 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:36:18,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:36:18,029 INFO L82 PathProgramCache]: Analyzing trace with hash -312487543, now seen corresponding path program 17 times [2021-10-21 19:36:18,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:36:18,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114495342] [2021-10-21 19:36:18,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:36:18,029 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:36:18,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:36:18,059 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:36:18,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:36:18,068 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:36:18,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:36:18,069 INFO L82 PathProgramCache]: Analyzing trace with hash 799661767, now seen corresponding path program 9 times [2021-10-21 19:36:18,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:36:18,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564118261] [2021-10-21 19:36:18,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:36:18,069 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:36:18,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:36:18,085 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:36:18,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:36:18,099 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:36:18,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.10 07:36:18 BoogieIcfgContainer [2021-10-21 19:36:18,791 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-21 19:36:18,792 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:36:18,792 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:36:18,792 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:36:18,793 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:35:43" (3/4) ... [2021-10-21 19:36:18,795 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-21 19:36:18,852 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:36:18,852 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:36:18,854 INFO L168 Benchmark]: Toolchain (without parser) took 35736.15 ms. Allocated memory was 83.9 MB in the beginning and 438.3 MB in the end (delta: 354.4 MB). Free memory was 50.7 MB in the beginning and 162.2 MB in the end (delta: -111.5 MB). Peak memory consumption was 242.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:36:18,854 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 83.9 MB. Free memory was 56.3 MB in the beginning and 56.3 MB in the end (delta: 29.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:36:18,855 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.78 ms. Allocated memory was 83.9 MB in the beginning and 113.2 MB in the end (delta: 29.4 MB). Free memory was 50.5 MB in the beginning and 91.5 MB in the end (delta: -41.0 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:36:18,855 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.61 ms. Allocated memory is still 113.2 MB. Free memory was 91.5 MB in the beginning and 90.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:36:18,856 INFO L168 Benchmark]: Boogie Preprocessor took 22.10 ms. Allocated memory is still 113.2 MB. Free memory was 90.2 MB in the beginning and 89.4 MB in the end (delta: 753.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:36:18,856 INFO L168 Benchmark]: RCFGBuilder took 316.24 ms. Allocated memory is still 113.2 MB. Free memory was 89.4 MB in the beginning and 81.7 MB in the end (delta: 7.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-21 19:36:18,857 INFO L168 Benchmark]: BuchiAutomizer took 35028.27 ms. Allocated memory was 113.2 MB in the beginning and 438.3 MB in the end (delta: 325.1 MB). Free memory was 81.7 MB in the beginning and 166.4 MB in the end (delta: -84.8 MB). Peak memory consumption was 272.6 MB. Max. memory is 16.1 GB. [2021-10-21 19:36:18,857 INFO L168 Benchmark]: Witness Printer took 60.39 ms. Allocated memory is still 438.3 MB. Free memory was 166.4 MB in the beginning and 162.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:36:18,860 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 83.9 MB. Free memory was 56.3 MB in the beginning and 56.3 MB in the end (delta: 29.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 264.78 ms. Allocated memory was 83.9 MB in the beginning and 113.2 MB in the end (delta: 29.4 MB). Free memory was 50.5 MB in the beginning and 91.5 MB in the end (delta: -41.0 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.61 ms. Allocated memory is still 113.2 MB. Free memory was 91.5 MB in the beginning and 90.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.10 ms. Allocated memory is still 113.2 MB. Free memory was 90.2 MB in the beginning and 89.4 MB in the end (delta: 753.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 316.24 ms. Allocated memory is still 113.2 MB. Free memory was 89.4 MB in the beginning and 81.7 MB in the end (delta: 7.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 35028.27 ms. Allocated memory was 113.2 MB in the beginning and 438.3 MB in the end (delta: 325.1 MB). Free memory was 81.7 MB in the beginning and 166.4 MB in the end (delta: -84.8 MB). Peak memory consumption was 272.6 MB. Max. memory is 16.1 GB. * Witness Printer took 60.39 ms. Allocated memory is still 438.3 MB. Free memory was 166.4 MB in the beginning and 162.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 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 36 terminating modules (22 trivial, 13 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 + 17 and consists of 5 locations. One deterministic module has affine ranking function -1 * i and consists of 4 locations. One deterministic module has affine ranking function -2 * i + 17 and consists of 5 locations. One deterministic module has affine ranking function i and consists of 4 locations. One deterministic module has affine ranking function -2 * i + 13 and consists of 10 locations. One deterministic module has affine ranking function 7 + -1 * i and consists of 12 locations. One deterministic module has affine ranking function -2 * i + 15 and consists of 14 locations. One deterministic module has affine ranking function -1 * i + 8 and consists of 16 locations. One deterministic module has affine ranking function -2 * i + 17 and consists of 18 locations. One deterministic module has affine ranking function 9 + -1 * i and consists of 20 locations. One deterministic module has affine ranking function 19 + -2 * i and consists of 22 locations. One nondeterministic module has affine ranking function i and consists of 4 locations. 22 modules have a trivial ranking function, the largest among these consists of 12 locations. The remainder module has 168 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 34.9s and 26 iterations. TraceHistogramMax:20. Analysis of lassos took 25.6s. Construction of modules took 1.6s. Büchi inclusion checks took 6.9s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 35. Automata minimization 235.9ms AutomataMinimizationTime, 36 MinimizatonAttempts, 2596 StatesRemovedByMinimization, 35 NontrivialMinimizations. Non-live state removal took 0.2s Buchi closure took 0.0s. Biggest automaton had 168 states and ocurred in iteration 25. Nontrivial modules had stage [13, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1197/3416 HoareTripleCheckerStatistics: 274 SDtfs, 748 SDslu, 9 SDs, 0 SdLazy, 1926 SolverSat, 251 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1694.5ms Time LassoAnalysisResults: nont1 unkn0 SFLI3 SFLT3 conc0 concLT9 SILN0 SILU0 SILI8 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax162 hnf97 lsp43 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq178 hnf94 smp83 dnf139 smp96 tf108 neg93 sie114 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 47ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 23 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 14 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 2.3s - 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@7242275f=0, \result=0, i=10} - 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 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 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 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 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-21 19:36:18,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Forceful destruction successful, exit code 0 [2021-10-21 19:36:19,126 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Ended with exit code 0 [2021-10-21 19:36:19,326 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Ended with exit code 0 [2021-10-21 19:36:19,526 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Ended with exit code 0 [2021-10-21 19:36:19,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Forceful destruction successful, exit code 0 [2021-10-21 19:36:19,925 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2021-10-21 19:36:20,126 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2021-10-21 19:36:20,326 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2021-10-21 19:36:20,526 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2021-10-21 19:36:20,726 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2021-10-21 19:36:20,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2021-10-21 19:36:21,128 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2021-10-21 19:36:21,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2021-10-21 19:36:21,529 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2021-10-21 19:36:21,729 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2021-10-21 19:36:21,928 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2021-10-21 19:36:22,127 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2021-10-21 19:36:22,328 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2021-10-21 19:36:22,527 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2021-10-21 19:36:22,728 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2021-10-21 19:36:22,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2021-10-21 19:36:23,129 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2021-10-21 19:36:23,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2021-10-21 19:36:23,529 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2021-10-21 19:36:23,729 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2021-10-21 19:36:23,932 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e64564-0f4d-48ad-b5cd-d673150cfff0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...