./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/UpAndDownIneq.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/UpAndDownIneq.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD --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 7c4ca36c34c25cccb97ec2e65527d2a743b4e62b95f1f396c9f281ef44a01670 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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-b2eff8b [2021-10-29 00:05:06,318 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 00:05:06,321 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 00:05:06,385 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 00:05:06,385 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 00:05:06,387 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 00:05:06,389 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 00:05:06,392 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 00:05:06,395 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 00:05:06,397 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 00:05:06,398 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 00:05:06,400 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 00:05:06,401 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 00:05:06,402 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 00:05:06,404 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 00:05:06,406 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 00:05:06,414 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 00:05:06,420 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 00:05:06,423 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 00:05:06,427 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 00:05:06,436 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 00:05:06,442 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 00:05:06,443 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 00:05:06,444 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 00:05:06,448 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 00:05:06,454 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 00:05:06,454 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 00:05:06,455 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 00:05:06,456 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 00:05:06,457 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 00:05:06,457 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 00:05:06,458 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 00:05:06,459 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 00:05:06,460 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 00:05:06,461 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 00:05:06,461 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 00:05:06,462 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 00:05:06,462 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 00:05:06,463 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 00:05:06,464 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 00:05:06,464 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 00:05:06,465 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-29 00:05:06,492 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 00:05:06,492 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 00:05:06,493 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-29 00:05:06,493 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-29 00:05:06,494 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-29 00:05:06,494 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-29 00:05:06,495 INFO L138 SettingsManager]: * Use SBE=true [2021-10-29 00:05:06,495 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-29 00:05:06,495 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-29 00:05:06,495 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-29 00:05:06,495 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-29 00:05:06,496 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-29 00:05:06,496 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-29 00:05:06,496 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 00:05:06,496 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-29 00:05:06,496 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 00:05:06,497 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 00:05:06,497 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-29 00:05:06,497 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-29 00:05:06,497 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-29 00:05:06,497 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 00:05:06,498 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-29 00:05:06,498 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 00:05:06,498 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-29 00:05:06,498 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 00:05:06,498 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 00:05:06,499 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 00:05:06,499 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-29 00:05:06,499 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 00:05:06,500 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-29 00:05:06,500 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_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c4ca36c34c25cccb97ec2e65527d2a743b4e62b95f1f396c9f281ef44a01670 [2021-10-29 00:05:06,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 00:05:06,825 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 00:05:06,829 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 00:05:06,831 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 00:05:06,832 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 00:05:06,833 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/termination-restricted-15/UpAndDownIneq.c [2021-10-29 00:05:06,970 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/data/ec8e6c727/e2a4ce682d7448b2a9fa87e542a3c264/FLAGac8eb423d [2021-10-29 00:05:07,501 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 00:05:07,502 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/sv-benchmarks/c/termination-restricted-15/UpAndDownIneq.c [2021-10-29 00:05:07,516 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/data/ec8e6c727/e2a4ce682d7448b2a9fa87e542a3c264/FLAGac8eb423d [2021-10-29 00:05:07,859 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/data/ec8e6c727/e2a4ce682d7448b2a9fa87e542a3c264 [2021-10-29 00:05:07,869 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 00:05:07,871 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 00:05:07,879 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 00:05:07,879 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 00:05:07,884 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 00:05:07,885 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:05:07" (1/1) ... [2021-10-29 00:05:07,888 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37117e7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:07, skipping insertion in model container [2021-10-29 00:05:07,888 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:05:07" (1/1) ... [2021-10-29 00:05:07,897 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 00:05:07,916 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 00:05:08,046 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 00:05:08,050 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 00:05:08,067 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 00:05:08,080 INFO L208 MainTranslator]: Completed translation [2021-10-29 00:05:08,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:08 WrapperNode [2021-10-29 00:05:08,081 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 00:05:08,082 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 00:05:08,082 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 00:05:08,083 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 00:05:08,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:08" (1/1) ... [2021-10-29 00:05:08,095 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:08" (1/1) ... [2021-10-29 00:05:08,112 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 00:05:08,113 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 00:05:08,113 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 00:05:08,114 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 00:05:08,123 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:08" (1/1) ... [2021-10-29 00:05:08,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:08" (1/1) ... [2021-10-29 00:05:08,124 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:08" (1/1) ... [2021-10-29 00:05:08,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:08" (1/1) ... [2021-10-29 00:05:08,127 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:08" (1/1) ... [2021-10-29 00:05:08,132 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:08" (1/1) ... [2021-10-29 00:05:08,133 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:08" (1/1) ... [2021-10-29 00:05:08,134 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 00:05:08,135 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 00:05:08,136 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 00:05:08,136 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 00:05:08,137 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:08" (1/1) ... [2021-10-29 00:05:08,147 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:08,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:08,200 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:08,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-29 00:05:08,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 00:05:08,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 00:05:08,453 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 00:05:08,454 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-29 00:05:08,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:05:08 BoogieIcfgContainer [2021-10-29 00:05:08,460 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 00:05:08,464 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-29 00:05:08,464 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-29 00:05:08,469 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-29 00:05:08,470 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-29 00:05:08,470 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.10 12:05:07" (1/3) ... [2021-10-29 00:05:08,472 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2da8756 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.10 12:05:08, skipping insertion in model container [2021-10-29 00:05:08,473 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-29 00:05:08,473 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:05:08" (2/3) ... [2021-10-29 00:05:08,475 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2da8756 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.10 12:05:08, skipping insertion in model container [2021-10-29 00:05:08,475 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-29 00:05:08,475 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:05:08" (3/3) ... [2021-10-29 00:05:08,477 INFO L389 chiAutomizerObserver]: Analyzing ICFG UpAndDownIneq.c [2021-10-29 00:05:08,578 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-29 00:05:08,578 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-29 00:05:08,578 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-29 00:05:08,578 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-29 00:05:08,579 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-29 00:05:08,579 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-29 00:05:08,579 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-29 00:05:08,579 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-29 00:05:08,598 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) [2021-10-29 00:05:08,624 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-29 00:05:08,624 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-29 00:05:08,625 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-29 00:05:08,632 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-29 00:05:08,633 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-29 00:05:08,633 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-29 00:05:08,633 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) [2021-10-29 00:05:08,635 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-29 00:05:08,636 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-29 00:05:08,636 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-29 00:05:08,636 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-29 00:05:08,637 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-29 00:05:08,645 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 [2021-10-29 00:05:08,647 INFO L793 eck$LassoCheckResult]: Loop: 6#L18-1true assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10#L12true assume main_~i~0 >= 10;main_~up~0 := 0; 3#L12-2true assume main_~i~0 <= 0;main_~up~0 := 1; 8#L15-1true assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 6#L18-1true [2021-10-29 00:05:08,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:08,656 INFO L85 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-10-29 00:05:08,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:08,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244886415] [2021-10-29 00:05:08,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:08,670 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:08,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:08,757 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:05:08,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:08,780 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:05:08,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:08,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1234538, now seen corresponding path program 1 times [2021-10-29 00:05:08,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:08,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886922946] [2021-10-29 00:05:08,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:08,786 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:08,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:08,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:08,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:05:08,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886922946] [2021-10-29 00:05:08,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886922946] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 00:05:08,871 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:05:08,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 00:05:08,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282494292] [2021-10-29 00:05:08,878 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-29 00:05:08,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:05:08,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 00:05:08,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 00:05:08,899 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) [2021-10-29 00:05:08,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:08,957 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2021-10-29 00:05:08,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 00:05:08,959 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 21 transitions. [2021-10-29 00:05:08,961 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-10-29 00:05:08,967 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 9 states and 13 transitions. [2021-10-29 00:05:08,969 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2021-10-29 00:05:08,969 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2021-10-29 00:05:08,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 13 transitions. [2021-10-29 00:05:08,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-29 00:05:08,974 INFO L681 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2021-10-29 00:05:09,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 13 transitions. [2021-10-29 00:05:09,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-29 00:05:09,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.4444444444444444) 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) [2021-10-29 00:05:09,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 13 transitions. [2021-10-29 00:05:09,022 INFO L704 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2021-10-29 00:05:09,022 INFO L587 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2021-10-29 00:05:09,022 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-29 00:05:09,023 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 13 transitions. [2021-10-29 00:05:09,023 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-10-29 00:05:09,024 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-29 00:05:09,024 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-29 00:05:09,024 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-29 00:05:09,025 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-29 00:05:09,025 INFO L791 eck$LassoCheckResult]: Stem: 37#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 38#L18-1 [2021-10-29 00:05:09,025 INFO L793 eck$LassoCheckResult]: Loop: 38#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 43#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 35#L12-2 assume !(main_~i~0 <= 0); 36#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 38#L18-1 [2021-10-29 00:05:09,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:09,026 INFO L85 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2021-10-29 00:05:09,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:09,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330328743] [2021-10-29 00:05:09,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:09,027 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:09,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:09,033 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:05:09,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:09,037 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:05:09,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:09,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1234602, now seen corresponding path program 1 times [2021-10-29 00:05:09,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:09,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569355636] [2021-10-29 00:05:09,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:09,040 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:09,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:09,070 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:05:09,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:09,078 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:05:09,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:09,079 INFO L85 PathProgramCache]: Analyzing trace with hash 29863753, now seen corresponding path program 1 times [2021-10-29 00:05:09,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:09,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521536455] [2021-10-29 00:05:09,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:09,081 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:09,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:09,104 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:05:09,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:09,114 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:05:09,205 INFO L210 LassoAnalysis]: Preferences: [2021-10-29 00:05:09,205 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-29 00:05:09,206 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-29 00:05:09,206 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-29 00:05:09,206 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-29 00:05:09,206 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:09,207 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-29 00:05:09,207 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-29 00:05:09,207 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration2_Loop [2021-10-29 00:05:09,207 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-29 00:05:09,207 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-29 00:05:09,227 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:09,235 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:09,240 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:09,244 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:09,342 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-29 00:05:09,343 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-29 00:05:09,346 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:09,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:09,349 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:09,355 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-29 00:05:09,355 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:05:09,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-29 00:05:09,387 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-29 00:05:09,388 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: [] [2021-10-29 00:05:09,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:09,429 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:09,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:09,431 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:09,435 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-29 00:05:09,435 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:05:09,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-29 00:05:09,471 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-29 00:05:09,471 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: [] [2021-10-29 00:05:09,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:09,514 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:09,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:09,519 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:09,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-29 00:05:09,523 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-29 00:05:09,524 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:05:09,555 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-29 00:05:09,555 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: [] [2021-10-29 00:05:09,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:09,588 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:09,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:09,590 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:09,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-29 00:05:09,598 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-29 00:05:09,598 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:05:09,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:09,661 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:09,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:09,663 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:09,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-29 00:05:09,664 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-29 00:05:09,665 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:05:09,723 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-29 00:05:09,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:09,775 INFO L210 LassoAnalysis]: Preferences: [2021-10-29 00:05:09,775 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-29 00:05:09,775 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-29 00:05:09,775 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-29 00:05:09,775 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-29 00:05:09,775 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:09,775 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-29 00:05:09,775 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-29 00:05:09,775 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration2_Loop [2021-10-29 00:05:09,776 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-29 00:05:09,776 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-29 00:05:09,778 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:09,788 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:09,792 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:09,796 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:09,863 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-29 00:05:09,869 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-29 00:05:09,871 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:09,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:09,874 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:09,876 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 [2021-10-29 00:05:09,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-29 00:05:09,888 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-29 00:05:09,888 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-29 00:05:09,889 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-29 00:05:09,889 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-29 00:05:09,899 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-29 00:05:09,899 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-29 00:05:09,922 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-29 00:05:09,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:09,955 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:09,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:09,957 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:09,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-29 00:05:09,967 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 [2021-10-29 00:05:09,976 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-29 00:05:09,976 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-29 00:05:09,976 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-29 00:05:09,976 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-29 00:05:09,981 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-29 00:05:09,981 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-29 00:05:10,006 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-29 00:05:10,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:10,049 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:10,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:10,051 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:10,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-29 00:05:10,053 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 [2021-10-29 00:05:10,062 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-29 00:05:10,063 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-29 00:05:10,063 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-29 00:05:10,063 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-29 00:05:10,063 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-29 00:05:10,064 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-29 00:05:10,065 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-29 00:05:10,066 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-29 00:05:10,096 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2021-10-29 00:05:10,096 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:10,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:10,098 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:10,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-29 00:05:10,100 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 [2021-10-29 00:05:10,109 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-29 00:05:10,109 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-29 00:05:10,109 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-29 00:05:10,110 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-29 00:05:10,110 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-29 00:05:10,112 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-29 00:05:10,112 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-29 00:05:10,125 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-29 00:05:10,163 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-29 00:05:10,164 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-29 00:05:10,165 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:10,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:10,167 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:10,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-29 00:05:10,191 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-29 00:05:10,191 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-29 00:05:10,191 INFO L513 LassoAnalysis]: Proved termination. [2021-10-29 00:05:10,191 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-29 00:05:10,221 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2021-10-29 00:05:10,223 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-29 00:05:10,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:10,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:10,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 00:05:10,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:10,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:10,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-29 00:05:10,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:10,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:10,372 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 [2021-10-29 00:05:10,379 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 13 transitions. cyclomatic complexity: 5 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) [2021-10-29 00:05:10,457 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 13 transitions. cyclomatic complexity: 5. 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 36 transitions. Complement of second has 7 states. [2021-10-29 00:05:10,458 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 [2021-10-29 00:05:10,459 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) [2021-10-29 00:05:10,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2021-10-29 00:05:10,461 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 1 letters. Loop has 4 letters. [2021-10-29 00:05:10,463 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:05:10,463 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 5 letters. Loop has 4 letters. [2021-10-29 00:05:10,464 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:05:10,464 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 1 letters. Loop has 8 letters. [2021-10-29 00:05:10,464 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:05:10,465 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 36 transitions. [2021-10-29 00:05:10,470 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2021-10-29 00:05:10,475 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 24 states and 36 transitions. [2021-10-29 00:05:10,475 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2021-10-29 00:05:10,475 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-10-29 00:05:10,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 36 transitions. [2021-10-29 00:05:10,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-29 00:05:10,476 INFO L681 BuchiCegarLoop]: Abstraction has 24 states and 36 transitions. [2021-10-29 00:05:10,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 36 transitions. [2021-10-29 00:05:10,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2021-10-29 00:05:10,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 22 states have internal predecessors, (34), 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) [2021-10-29 00:05:10,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 34 transitions. [2021-10-29 00:05:10,485 INFO L704 BuchiCegarLoop]: Abstraction has 23 states and 34 transitions. [2021-10-29 00:05:10,486 INFO L587 BuchiCegarLoop]: Abstraction has 23 states and 34 transitions. [2021-10-29 00:05:10,486 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-29 00:05:10,486 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 34 transitions. [2021-10-29 00:05:10,491 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2021-10-29 00:05:10,492 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-29 00:05:10,492 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-29 00:05:10,492 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-29 00:05:10,492 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-29 00:05:10,493 INFO L791 eck$LassoCheckResult]: Stem: 115#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 116#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 112#L12 [2021-10-29 00:05:10,493 INFO L793 eck$LassoCheckResult]: Loop: 112#L12 assume !(main_~i~0 >= 10); 119#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 129#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 111#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 112#L12 [2021-10-29 00:05:10,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:10,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2021-10-29 00:05:10,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:10,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027201561] [2021-10-29 00:05:10,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:10,497 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:10,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:10,512 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:05:10,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:10,524 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:05:10,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:10,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1389492, now seen corresponding path program 1 times [2021-10-29 00:05:10,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:10,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253685224] [2021-10-29 00:05:10,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:10,527 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:10,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:10,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:10,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:05:10,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253685224] [2021-10-29 00:05:10,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253685224] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 00:05:10,573 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:05:10,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 00:05:10,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130236383] [2021-10-29 00:05:10,574 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-29 00:05:10,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:05:10,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 00:05:10,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 00:05:10,575 INFO L87 Difference]: Start difference. First operand 23 states and 34 transitions. cyclomatic complexity: 14 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) [2021-10-29 00:05:10,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:10,598 INFO L93 Difference]: Finished difference Result 29 states and 41 transitions. [2021-10-29 00:05:10,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 00:05:10,599 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 41 transitions. [2021-10-29 00:05:10,601 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2021-10-29 00:05:10,603 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 28 states and 40 transitions. [2021-10-29 00:05:10,604 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21 [2021-10-29 00:05:10,604 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2021-10-29 00:05:10,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 40 transitions. [2021-10-29 00:05:10,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-29 00:05:10,605 INFO L681 BuchiCegarLoop]: Abstraction has 28 states and 40 transitions. [2021-10-29 00:05:10,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 40 transitions. [2021-10-29 00:05:10,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2021-10-29 00:05:10,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 27 states have (on average 1.4444444444444444) internal successors, (39), 26 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) [2021-10-29 00:05:10,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 39 transitions. [2021-10-29 00:05:10,622 INFO L704 BuchiCegarLoop]: Abstraction has 27 states and 39 transitions. [2021-10-29 00:05:10,622 INFO L587 BuchiCegarLoop]: Abstraction has 27 states and 39 transitions. [2021-10-29 00:05:10,623 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-29 00:05:10,623 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 39 transitions. [2021-10-29 00:05:10,625 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2021-10-29 00:05:10,626 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-29 00:05:10,626 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-29 00:05:10,626 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-29 00:05:10,626 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-29 00:05:10,627 INFO L791 eck$LassoCheckResult]: Stem: 169#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 170#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 178#L12 [2021-10-29 00:05:10,627 INFO L793 eck$LassoCheckResult]: Loop: 178#L12 assume !(main_~i~0 >= 10); 185#L12-2 assume !(main_~i~0 <= 0); 190#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 187#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 178#L12 [2021-10-29 00:05:10,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:10,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 2 times [2021-10-29 00:05:10,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:10,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007696659] [2021-10-29 00:05:10,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:10,630 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:10,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:10,639 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:05:10,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:10,649 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:05:10,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:10,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1391414, now seen corresponding path program 1 times [2021-10-29 00:05:10,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:10,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554095383] [2021-10-29 00:05:10,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:10,661 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:10,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:10,671 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:05:10,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:10,679 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:05:10,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:10,686 INFO L85 PathProgramCache]: Analyzing trace with hash 925835935, now seen corresponding path program 1 times [2021-10-29 00:05:10,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:10,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222831506] [2021-10-29 00:05:10,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:10,696 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:10,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:10,702 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:05:10,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:10,708 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:05:10,761 INFO L210 LassoAnalysis]: Preferences: [2021-10-29 00:05:10,762 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-29 00:05:10,762 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-29 00:05:10,762 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-29 00:05:10,762 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-29 00:05:10,762 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:10,763 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-29 00:05:10,763 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-29 00:05:10,763 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration4_Loop [2021-10-29 00:05:10,763 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-29 00:05:10,763 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-29 00:05:10,765 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:10,769 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:10,772 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:10,776 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:10,826 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-29 00:05:10,827 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-29 00:05:10,827 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:10,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:10,828 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:10,831 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-29 00:05:10,831 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:05:10,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-29 00:05:10,863 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-29 00:05:10,863 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: [] [2021-10-29 00:05:10,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:10,906 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:10,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:10,907 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:10,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-29 00:05:10,909 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-29 00:05:10,909 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:05:10,927 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-29 00:05:10,928 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: [] [2021-10-29 00:05:10,958 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:10,959 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:10,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:10,959 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:10,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-29 00:05:10,961 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-29 00:05:10,961 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:05:10,974 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-29 00:05:10,974 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: [] [2021-10-29 00:05:10,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:10,997 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:10,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:10,997 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:10,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-29 00:05:11,002 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-29 00:05:11,003 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:05:11,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:11,033 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:11,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:11,034 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:11,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-29 00:05:11,040 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-29 00:05:11,040 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:05:11,078 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-29 00:05:11,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:11,112 INFO L210 LassoAnalysis]: Preferences: [2021-10-29 00:05:11,112 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-29 00:05:11,112 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-29 00:05:11,112 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-29 00:05:11,112 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-29 00:05:11,112 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:11,112 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-29 00:05:11,112 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-29 00:05:11,112 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration4_Loop [2021-10-29 00:05:11,113 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-29 00:05:11,113 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-29 00:05:11,114 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:11,120 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:11,124 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:11,127 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:11,186 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-29 00:05:11,186 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-29 00:05:11,187 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:11,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:11,188 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:11,199 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 [2021-10-29 00:05:11,209 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-29 00:05:11,210 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-29 00:05:11,210 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-29 00:05:11,210 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-29 00:05:11,213 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-29 00:05:11,213 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-29 00:05:11,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-29 00:05:11,224 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-29 00:05:11,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:11,265 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:11,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:11,267 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:11,273 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 [2021-10-29 00:05:11,283 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-29 00:05:11,283 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-29 00:05:11,284 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-29 00:05:11,284 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-29 00:05:11,284 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-29 00:05:11,285 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-29 00:05:11,285 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-29 00:05:11,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-10-29 00:05:11,302 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-29 00:05:11,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:11,339 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:11,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:11,340 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:11,346 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 [2021-10-29 00:05:11,355 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-29 00:05:11,356 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-29 00:05:11,356 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-29 00:05:11,356 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-29 00:05:11,359 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-29 00:05:11,359 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-29 00:05:11,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-10-29 00:05:11,382 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-29 00:05:11,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:11,425 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:11,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:11,426 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:11,435 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 [2021-10-29 00:05:11,445 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-29 00:05:11,446 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-29 00:05:11,446 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-29 00:05:11,446 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-29 00:05:11,446 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-29 00:05:11,447 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-29 00:05:11,447 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-29 00:05:11,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-10-29 00:05:11,466 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-29 00:05:11,487 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-29 00:05:11,487 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-29 00:05:11,487 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:11,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:11,503 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:11,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-10-29 00:05:11,508 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-29 00:05:11,508 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-29 00:05:11,508 INFO L513 LassoAnalysis]: Proved termination. [2021-10-29 00:05:11,508 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-29 00:05:11,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:11,534 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-29 00:05:11,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:11,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:11,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 00:05:11,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:11,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:11,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-29 00:05:11,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:11,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:11,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:11,759 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 [2021-10-29 00:05:11,761 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 39 transitions. cyclomatic complexity: 15 Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 5 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) [2021-10-29 00:05:11,829 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 39 transitions. cyclomatic complexity: 15. Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 5 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 45 states and 68 transitions. Complement of second has 7 states. [2021-10-29 00:05:11,833 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 [2021-10-29 00:05:11,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 5 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) [2021-10-29 00:05:11,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2021-10-29 00:05:11,834 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 2 letters. Loop has 4 letters. [2021-10-29 00:05:11,834 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:05:11,834 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 6 letters. Loop has 4 letters. [2021-10-29 00:05:11,835 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:05:11,835 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 2 letters. Loop has 8 letters. [2021-10-29 00:05:11,836 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:05:11,837 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 68 transitions. [2021-10-29 00:05:11,842 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-10-29 00:05:11,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:11,844 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 37 states and 55 transitions. [2021-10-29 00:05:11,844 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2021-10-29 00:05:11,844 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2021-10-29 00:05:11,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 55 transitions. [2021-10-29 00:05:11,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-29 00:05:11,845 INFO L681 BuchiCegarLoop]: Abstraction has 37 states and 55 transitions. [2021-10-29 00:05:11,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 55 transitions. [2021-10-29 00:05:11,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2021-10-29 00:05:11,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 29 states have internal predecessors, (44), 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) [2021-10-29 00:05:11,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2021-10-29 00:05:11,849 INFO L704 BuchiCegarLoop]: Abstraction has 30 states and 44 transitions. [2021-10-29 00:05:11,849 INFO L587 BuchiCegarLoop]: Abstraction has 30 states and 44 transitions. [2021-10-29 00:05:11,849 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-29 00:05:11,850 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 30 states and 44 transitions. [2021-10-29 00:05:11,851 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-10-29 00:05:11,851 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-29 00:05:11,851 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-29 00:05:11,851 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-29 00:05:11,852 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-29 00:05:11,852 INFO L791 eck$LassoCheckResult]: Stem: 288#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; 289#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 299#L12 assume !(main_~i~0 >= 10); 292#L12-2 [2021-10-29 00:05:11,852 INFO L793 eck$LassoCheckResult]: Loop: 292#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 290#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 284#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 285#L12 assume !(main_~i~0 >= 10); 292#L12-2 [2021-10-29 00:05:11,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:11,853 INFO L85 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2021-10-29 00:05:11,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:11,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174893798] [2021-10-29 00:05:11,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:11,854 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:11,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:11,863 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:05:11,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:11,867 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:05:11,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:11,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1513900, now seen corresponding path program 1 times [2021-10-29 00:05:11,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:11,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115937878] [2021-10-29 00:05:11,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:11,869 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:11,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:11,874 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:05:11,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:11,879 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:05:11,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:11,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1363918576, now seen corresponding path program 1 times [2021-10-29 00:05:11,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:11,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232074603] [2021-10-29 00:05:11,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:11,881 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:11,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:11,891 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:05:11,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:11,898 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:05:11,947 INFO L210 LassoAnalysis]: Preferences: [2021-10-29 00:05:11,947 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-29 00:05:11,947 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-29 00:05:11,948 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-29 00:05:11,948 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-29 00:05:11,948 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:11,948 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-29 00:05:11,948 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-29 00:05:11,948 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration5_Loop [2021-10-29 00:05:11,948 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-29 00:05:11,949 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-29 00:05:11,954 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:11,957 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:11,979 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:11,982 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:12,037 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-29 00:05:12,037 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-29 00:05:12,037 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:12,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:12,042 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:12,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-10-29 00:05:12,045 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-29 00:05:12,045 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:05:12,061 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-29 00:05:12,061 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: [] [2021-10-29 00:05:12,085 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2021-10-29 00:05:12,085 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:12,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:12,087 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:12,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-10-29 00:05:12,088 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-29 00:05:12,088 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:05:12,128 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2021-10-29 00:05:12,128 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:12,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:12,131 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:12,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-10-29 00:05:12,133 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-29 00:05:12,133 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:05:12,198 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-29 00:05:12,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:12,206 INFO L210 LassoAnalysis]: Preferences: [2021-10-29 00:05:12,206 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-29 00:05:12,206 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-29 00:05:12,207 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-29 00:05:12,207 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-29 00:05:12,207 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:12,207 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-29 00:05:12,207 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-29 00:05:12,207 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration5_Loop [2021-10-29 00:05:12,207 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-29 00:05:12,207 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-29 00:05:12,208 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:12,217 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:12,220 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:12,223 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:12,276 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-29 00:05:12,277 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-29 00:05:12,277 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:12,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:12,282 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:12,285 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 [2021-10-29 00:05:12,296 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-29 00:05:12,296 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-29 00:05:12,296 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-29 00:05:12,296 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-29 00:05:12,296 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-29 00:05:12,298 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-29 00:05:12,298 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-29 00:05:12,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-10-29 00:05:12,314 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-29 00:05:12,317 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-29 00:05:12,317 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-29 00:05:12,318 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:12,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:12,323 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:12,325 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-29 00:05:12,325 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-29 00:05:12,325 INFO L513 LassoAnalysis]: Proved termination. [2021-10-29 00:05:12,325 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 1 Supporting invariants [] [2021-10-29 00:05:12,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-10-29 00:05:12,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:12,370 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-29 00:05:12,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:12,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:12,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 00:05:12,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:12,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:12,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-29 00:05:12,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:12,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:12,504 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 [2021-10-29 00:05:12,504 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 30 states and 44 transitions. cyclomatic complexity: 17 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:12,547 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 30 states and 44 transitions. cyclomatic complexity: 17. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 76 states and 108 transitions. Complement of second has 7 states. [2021-10-29 00:05:12,548 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 [2021-10-29 00:05:12,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:12,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2021-10-29 00:05:12,549 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 3 letters. Loop has 4 letters. [2021-10-29 00:05:12,550 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:05:12,550 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 7 letters. Loop has 4 letters. [2021-10-29 00:05:12,550 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:05:12,550 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 3 letters. Loop has 8 letters. [2021-10-29 00:05:12,553 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:05:12,553 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 76 states and 108 transitions. [2021-10-29 00:05:12,563 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 26 [2021-10-29 00:05:12,569 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 76 states to 68 states and 98 transitions. [2021-10-29 00:05:12,569 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2021-10-29 00:05:12,569 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2021-10-29 00:05:12,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 68 states and 98 transitions. [2021-10-29 00:05:12,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-29 00:05:12,571 INFO L681 BuchiCegarLoop]: Abstraction has 68 states and 98 transitions. [2021-10-29 00:05:12,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states and 98 transitions. [2021-10-29 00:05:12,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 56. [2021-10-29 00:05:12,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 56 states have (on average 1.5) internal successors, (84), 55 states have internal predecessors, (84), 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) [2021-10-29 00:05:12,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 84 transitions. [2021-10-29 00:05:12,581 INFO L704 BuchiCegarLoop]: Abstraction has 56 states and 84 transitions. [2021-10-29 00:05:12,581 INFO L587 BuchiCegarLoop]: Abstraction has 56 states and 84 transitions. [2021-10-29 00:05:12,581 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-29 00:05:12,581 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 56 states and 84 transitions. [2021-10-29 00:05:12,582 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 22 [2021-10-29 00:05:12,582 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-29 00:05:12,582 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-29 00:05:12,583 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-29 00:05:12,583 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-29 00:05:12,583 INFO L791 eck$LassoCheckResult]: Stem: 440#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; 441#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 450#L12 assume !(main_~i~0 >= 10); 454#L12-2 assume !(main_~i~0 <= 0); 433#L15-1 [2021-10-29 00:05:12,583 INFO L793 eck$LassoCheckResult]: Loop: 433#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 436#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 437#L12 assume !(main_~i~0 >= 10); 432#L12-2 assume !(main_~i~0 <= 0); 433#L15-1 [2021-10-29 00:05:12,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:12,584 INFO L85 PathProgramCache]: Analyzing trace with hash 963408, now seen corresponding path program 1 times [2021-10-29 00:05:12,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:12,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359984038] [2021-10-29 00:05:12,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:12,584 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:12,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:12,594 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:05:12,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:12,608 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:05:12,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:12,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1678392, now seen corresponding path program 1 times [2021-10-29 00:05:12,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:12,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956501887] [2021-10-29 00:05:12,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:12,614 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:12,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:12,619 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:05:12,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:12,623 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:05:12,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:12,624 INFO L85 PathProgramCache]: Analyzing trace with hash 670044167, now seen corresponding path program 1 times [2021-10-29 00:05:12,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:12,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290203865] [2021-10-29 00:05:12,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:12,625 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:12,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:12,670 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:12,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:05:12,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290203865] [2021-10-29 00:05:12,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290203865] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 00:05:12,671 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:05:12,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 00:05:12,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979023954] [2021-10-29 00:05:12,714 INFO L210 LassoAnalysis]: Preferences: [2021-10-29 00:05:12,714 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-29 00:05:12,714 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-29 00:05:12,714 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-29 00:05:12,714 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-29 00:05:12,714 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:12,715 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-29 00:05:12,715 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-29 00:05:12,715 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration6_Loop [2021-10-29 00:05:12,715 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-29 00:05:12,715 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-29 00:05:12,719 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:12,727 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:12,730 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:12,738 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:12,786 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-29 00:05:12,787 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-29 00:05:12,787 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:12,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:12,791 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:12,796 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-29 00:05:12,796 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:05:12,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-10-29 00:05:12,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:12,864 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:12,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:12,865 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:12,870 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-29 00:05:12,870 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:05:12,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-10-29 00:05:13,053 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-29 00:05:13,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:13,057 INFO L210 LassoAnalysis]: Preferences: [2021-10-29 00:05:13,058 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-29 00:05:13,058 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-29 00:05:13,058 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-29 00:05:13,058 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-29 00:05:13,058 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:13,058 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-29 00:05:13,058 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-29 00:05:13,058 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration6_Loop [2021-10-29 00:05:13,058 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-29 00:05:13,058 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-29 00:05:13,059 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:13,066 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:13,069 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:13,072 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:13,122 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-29 00:05:13,122 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-29 00:05:13,122 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:13,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:13,123 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:13,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-10-29 00:05:13,133 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 [2021-10-29 00:05:13,143 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-29 00:05:13,143 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-29 00:05:13,143 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-29 00:05:13,143 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-29 00:05:13,143 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-29 00:05:13,146 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-29 00:05:13,146 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-29 00:05:13,157 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-29 00:05:13,160 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-29 00:05:13,160 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-29 00:05:13,160 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:13,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:13,161 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:13,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-10-29 00:05:13,166 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-29 00:05:13,170 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-29 00:05:13,170 INFO L513 LassoAnalysis]: Proved termination. [2021-10-29 00:05:13,171 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 17 Supporting invariants [] [2021-10-29 00:05:13,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:13,196 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-29 00:05:13,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:13,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:13,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 00:05:13,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:13,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:13,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-29 00:05:13,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:13,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:13,285 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 [2021-10-29 00:05:13,285 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 56 states and 84 transitions. cyclomatic complexity: 35 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) [2021-10-29 00:05:13,332 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 56 states and 84 transitions. cyclomatic complexity: 35. 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) Result 155 states and 227 transitions. Complement of second has 7 states. [2021-10-29 00:05:13,333 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 [2021-10-29 00:05:13,333 INFO L82 GeneralOperation]: Start removeUnreachable. 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) [2021-10-29 00:05:13,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2021-10-29 00:05:13,334 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 4 letters. Loop has 4 letters. [2021-10-29 00:05:13,334 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:05:13,334 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 8 letters. Loop has 4 letters. [2021-10-29 00:05:13,335 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:05:13,335 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 4 letters. Loop has 8 letters. [2021-10-29 00:05:13,335 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:05:13,336 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 155 states and 227 transitions. [2021-10-29 00:05:13,339 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 43 [2021-10-29 00:05:13,342 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 155 states to 151 states and 219 transitions. [2021-10-29 00:05:13,342 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 69 [2021-10-29 00:05:13,343 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 78 [2021-10-29 00:05:13,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 151 states and 219 transitions. [2021-10-29 00:05:13,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-29 00:05:13,343 INFO L681 BuchiCegarLoop]: Abstraction has 151 states and 219 transitions. [2021-10-29 00:05:13,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states and 219 transitions. [2021-10-29 00:05:13,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 125. [2021-10-29 00:05:13,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 125 states have (on average 1.512) internal successors, (189), 124 states have internal predecessors, (189), 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) [2021-10-29 00:05:13,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 189 transitions. [2021-10-29 00:05:13,361 INFO L704 BuchiCegarLoop]: Abstraction has 125 states and 189 transitions. [2021-10-29 00:05:13,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:05:13,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 00:05:13,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 00:05:13,362 INFO L87 Difference]: Start difference. First operand 125 states and 189 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 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) [2021-10-29 00:05:13,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:13,377 INFO L93 Difference]: Finished difference Result 97 states and 129 transitions. [2021-10-29 00:05:13,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 00:05:13,379 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 97 states and 129 transitions. [2021-10-29 00:05:13,381 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 22 [2021-10-29 00:05:13,384 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 97 states to 83 states and 115 transitions. [2021-10-29 00:05:13,384 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2021-10-29 00:05:13,384 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 39 [2021-10-29 00:05:13,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 83 states and 115 transitions. [2021-10-29 00:05:13,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-29 00:05:13,385 INFO L681 BuchiCegarLoop]: Abstraction has 83 states and 115 transitions. [2021-10-29 00:05:13,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states and 115 transitions. [2021-10-29 00:05:13,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 78. [2021-10-29 00:05:13,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 78 states have (on average 1.4102564102564104) internal successors, (110), 77 states have internal predecessors, (110), 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) [2021-10-29 00:05:13,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 110 transitions. [2021-10-29 00:05:13,426 INFO L704 BuchiCegarLoop]: Abstraction has 78 states and 110 transitions. [2021-10-29 00:05:13,426 INFO L587 BuchiCegarLoop]: Abstraction has 78 states and 110 transitions. [2021-10-29 00:05:13,426 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-10-29 00:05:13,426 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 78 states and 110 transitions. [2021-10-29 00:05:13,427 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 21 [2021-10-29 00:05:13,428 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-29 00:05:13,428 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-29 00:05:13,428 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2021-10-29 00:05:13,428 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-29 00:05:13,429 INFO L791 eck$LassoCheckResult]: Stem: 923#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; 924#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 976#L12 assume !(main_~i~0 >= 10); 974#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 964#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 968#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 969#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 915#L12-2 [2021-10-29 00:05:13,429 INFO L793 eck$LassoCheckResult]: Loop: 915#L12-2 assume !(main_~i~0 <= 0); 916#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 919#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 920#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 915#L12-2 [2021-10-29 00:05:13,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:13,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1363918578, now seen corresponding path program 1 times [2021-10-29 00:05:13,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:13,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393194134] [2021-10-29 00:05:13,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:13,430 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:13,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:13,462 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2021-10-29 00:05:13,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:13,495 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:13,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:05:13,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393194134] [2021-10-29 00:05:13,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393194134] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 00:05:13,496 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:05:13,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 00:05:13,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593087497] [2021-10-29 00:05:13,496 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-29 00:05:13,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:13,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1575402, now seen corresponding path program 2 times [2021-10-29 00:05:13,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:13,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804958105] [2021-10-29 00:05:13,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:13,497 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:13,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:13,502 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:05:13,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:13,506 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:05:13,545 INFO L210 LassoAnalysis]: Preferences: [2021-10-29 00:05:13,545 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-29 00:05:13,545 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-29 00:05:13,545 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-29 00:05:13,545 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-29 00:05:13,545 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:13,545 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-29 00:05:13,546 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-29 00:05:13,546 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration7_Loop [2021-10-29 00:05:13,546 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-29 00:05:13,546 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-29 00:05:13,547 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:13,551 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:13,553 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:13,556 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:13,598 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-29 00:05:13,598 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-29 00:05:13,598 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:13,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:13,599 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:13,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-10-29 00:05:13,607 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-29 00:05:13,607 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:05:13,616 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-29 00:05:13,616 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: [] [2021-10-29 00:05:13,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:13,641 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:13,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:13,642 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:13,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-10-29 00:05:13,650 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-29 00:05:13,650 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:05:13,682 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-29 00:05:13,683 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: [] [2021-10-29 00:05:13,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:13,717 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:13,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:13,723 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:13,725 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-29 00:05:13,725 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:05:13,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-10-29 00:05:13,751 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-29 00:05:13,751 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: [] [2021-10-29 00:05:13,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:13,792 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:13,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:13,795 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:13,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-10-29 00:05:13,797 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-29 00:05:13,798 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:05:13,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:13,843 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:13,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:13,845 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:13,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-10-29 00:05:13,846 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-29 00:05:13,846 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:05:13,972 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-29 00:05:13,974 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2021-10-29 00:05:13,974 INFO L210 LassoAnalysis]: Preferences: [2021-10-29 00:05:13,974 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-29 00:05:13,974 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-29 00:05:13,975 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-29 00:05:13,975 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-29 00:05:13,975 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:13,975 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-29 00:05:13,975 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-29 00:05:13,975 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration7_Loop [2021-10-29 00:05:13,975 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-29 00:05:13,975 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-29 00:05:13,976 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:13,984 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:13,992 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:13,995 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:14,040 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-29 00:05:14,041 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-29 00:05:14,041 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:14,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:14,042 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:14,044 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 [2021-10-29 00:05:14,054 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-29 00:05:14,054 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-29 00:05:14,054 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-29 00:05:14,054 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-29 00:05:14,057 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-29 00:05:14,058 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-29 00:05:14,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-10-29 00:05:14,078 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-29 00:05:14,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:14,122 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:14,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:14,124 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:14,126 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 [2021-10-29 00:05:14,137 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-29 00:05:14,137 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-29 00:05:14,137 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-29 00:05:14,137 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-29 00:05:14,137 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-29 00:05:14,138 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-29 00:05:14,138 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-29 00:05:14,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-10-29 00:05:14,154 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-29 00:05:14,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:14,178 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:14,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:14,178 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:14,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-10-29 00:05:14,181 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 [2021-10-29 00:05:14,190 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-29 00:05:14,190 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-29 00:05:14,190 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-29 00:05:14,191 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-29 00:05:14,193 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-29 00:05:14,193 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-29 00:05:14,203 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-29 00:05:14,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:14,229 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:14,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:14,230 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:14,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2021-10-29 00:05:14,231 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 [2021-10-29 00:05:14,239 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-29 00:05:14,239 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-29 00:05:14,239 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-29 00:05:14,240 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-29 00:05:14,240 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-29 00:05:14,240 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-29 00:05:14,240 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-29 00:05:14,242 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-29 00:05:14,245 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-29 00:05:14,245 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-29 00:05:14,246 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:14,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:14,246 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:14,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-10-29 00:05:14,252 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-29 00:05:14,252 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-29 00:05:14,252 INFO L513 LassoAnalysis]: Proved termination. [2021-10-29 00:05:14,252 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-29 00:05:14,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:14,284 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-29 00:05:14,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:14,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:14,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 00:05:14,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:14,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:14,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-29 00:05:14,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:14,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:14,367 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 [2021-10-29 00:05:14,367 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 78 states and 110 transitions. cyclomatic complexity: 43 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) [2021-10-29 00:05:14,397 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 78 states and 110 transitions. cyclomatic complexity: 43. 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 148 states and 199 transitions. Complement of second has 7 states. [2021-10-29 00:05:14,399 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 [2021-10-29 00:05:14,399 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) [2021-10-29 00:05:14,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2021-10-29 00:05:14,399 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 4 letters. [2021-10-29 00:05:14,400 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:05:14,400 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 11 letters. Loop has 4 letters. [2021-10-29 00:05:14,400 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:05:14,400 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 8 letters. [2021-10-29 00:05:14,400 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:05:14,400 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 148 states and 199 transitions. [2021-10-29 00:05:14,403 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 25 [2021-10-29 00:05:14,404 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 148 states to 121 states and 162 transitions. [2021-10-29 00:05:14,404 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 45 [2021-10-29 00:05:14,404 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 49 [2021-10-29 00:05:14,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 121 states and 162 transitions. [2021-10-29 00:05:14,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-29 00:05:14,404 INFO L681 BuchiCegarLoop]: Abstraction has 121 states and 162 transitions. [2021-10-29 00:05:14,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states and 162 transitions. [2021-10-29 00:05:14,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 101. [2021-10-29 00:05:14,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 101 states have (on average 1.386138613861386) internal successors, (140), 100 states have internal predecessors, (140), 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) [2021-10-29 00:05:14,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 140 transitions. [2021-10-29 00:05:14,411 INFO L704 BuchiCegarLoop]: Abstraction has 101 states and 140 transitions. [2021-10-29 00:05:14,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:05:14,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 00:05:14,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 00:05:14,412 INFO L87 Difference]: Start difference. First operand 101 states and 140 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) [2021-10-29 00:05:14,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:14,434 INFO L93 Difference]: Finished difference Result 135 states and 179 transitions. [2021-10-29 00:05:14,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 00:05:14,434 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 135 states and 179 transitions. [2021-10-29 00:05:14,436 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 27 [2021-10-29 00:05:14,437 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 135 states to 128 states and 168 transitions. [2021-10-29 00:05:14,437 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 59 [2021-10-29 00:05:14,438 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 59 [2021-10-29 00:05:14,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 128 states and 168 transitions. [2021-10-29 00:05:14,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-29 00:05:14,438 INFO L681 BuchiCegarLoop]: Abstraction has 128 states and 168 transitions. [2021-10-29 00:05:14,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states and 168 transitions. [2021-10-29 00:05:14,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 109. [2021-10-29 00:05:14,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 109 states have (on average 1.3027522935779816) internal successors, (142), 108 states have internal predecessors, (142), 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) [2021-10-29 00:05:14,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 142 transitions. [2021-10-29 00:05:14,443 INFO L704 BuchiCegarLoop]: Abstraction has 109 states and 142 transitions. [2021-10-29 00:05:14,443 INFO L587 BuchiCegarLoop]: Abstraction has 109 states and 142 transitions. [2021-10-29 00:05:14,443 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-10-29 00:05:14,443 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 109 states and 142 transitions. [2021-10-29 00:05:14,444 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 23 [2021-10-29 00:05:14,444 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-29 00:05:14,444 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-29 00:05:14,444 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2021-10-29 00:05:14,445 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-29 00:05:14,445 INFO L791 eck$LassoCheckResult]: Stem: 1438#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 1439#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 1441#L12 assume !(main_~i~0 >= 10); 1505#L12-2 assume !(main_~i~0 <= 0); 1524#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 1522#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 1471#L12 assume !(main_~i~0 >= 10); 1472#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 1491#L15-1 [2021-10-29 00:05:14,445 INFO L793 eck$LassoCheckResult]: Loop: 1491#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 1495#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 1494#L12 assume !(main_~i~0 >= 10); 1477#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 1491#L15-1 [2021-10-29 00:05:14,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:14,445 INFO L85 PathProgramCache]: Analyzing trace with hash 670103747, now seen corresponding path program 1 times [2021-10-29 00:05:14,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:14,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760107655] [2021-10-29 00:05:14,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:14,446 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:14,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:14,450 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:05:14,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:14,454 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:05:14,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:14,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1678390, now seen corresponding path program 2 times [2021-10-29 00:05:14,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:14,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659942085] [2021-10-29 00:05:14,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:14,455 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:14,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:14,458 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:05:14,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:14,461 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:05:14,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:14,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1635542008, now seen corresponding path program 1 times [2021-10-29 00:05:14,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:14,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312479418] [2021-10-29 00:05:14,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:14,462 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:14,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:14,483 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-29 00:05:14,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:05:14,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312479418] [2021-10-29 00:05:14,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312479418] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 00:05:14,484 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:05:14,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 00:05:14,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588862522] [2021-10-29 00:05:14,517 INFO L210 LassoAnalysis]: Preferences: [2021-10-29 00:05:14,517 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-29 00:05:14,517 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-29 00:05:14,517 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-29 00:05:14,517 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-29 00:05:14,517 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:14,518 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-29 00:05:14,518 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-29 00:05:14,518 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration8_Loop [2021-10-29 00:05:14,518 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-29 00:05:14,518 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-29 00:05:14,519 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:14,524 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:14,526 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:14,529 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:14,584 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-29 00:05:14,585 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-29 00:05:14,585 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:14,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:14,586 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:14,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-10-29 00:05:14,587 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-29 00:05:14,587 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:05:14,598 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-29 00:05:14,599 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: [] [2021-10-29 00:05:14,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:14,625 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:14,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:14,626 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:14,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-10-29 00:05:14,627 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-29 00:05:14,627 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:05:14,641 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-29 00:05:14,641 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: [] [2021-10-29 00:05:14,661 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Ended with exit code 0 [2021-10-29 00:05:14,662 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:14,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:14,663 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:14,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-10-29 00:05:14,665 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-29 00:05:14,665 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:05:14,678 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-29 00:05:14,679 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: [] [2021-10-29 00:05:14,700 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Ended with exit code 0 [2021-10-29 00:05:14,701 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:14,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:14,702 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:14,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-10-29 00:05:14,703 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-29 00:05:14,703 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:05:14,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:14,759 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:14,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:14,760 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:14,761 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-29 00:05:14,762 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:05:14,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2021-10-29 00:05:14,819 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-29 00:05:14,824 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Ended with exit code 0 [2021-10-29 00:05:14,824 INFO L210 LassoAnalysis]: Preferences: [2021-10-29 00:05:14,824 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-29 00:05:14,825 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-29 00:05:14,825 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-29 00:05:14,825 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-29 00:05:14,825 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:14,825 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-29 00:05:14,825 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-29 00:05:14,825 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration8_Loop [2021-10-29 00:05:14,825 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-29 00:05:14,825 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-29 00:05:14,826 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:14,831 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:14,833 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:14,836 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:14,895 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-29 00:05:14,895 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-29 00:05:14,896 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:14,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:14,896 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:14,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-10-29 00:05:14,898 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 [2021-10-29 00:05:14,906 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-29 00:05:14,906 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-29 00:05:14,906 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-29 00:05:14,906 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-29 00:05:14,906 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-29 00:05:14,916 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-29 00:05:14,916 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-29 00:05:14,923 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-29 00:05:14,946 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Ended with exit code 0 [2021-10-29 00:05:14,947 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:14,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:14,948 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:14,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-10-29 00:05:14,950 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 [2021-10-29 00:05:14,959 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-29 00:05:14,959 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-29 00:05:14,959 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-29 00:05:14,959 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-29 00:05:14,962 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-29 00:05:14,962 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-29 00:05:14,972 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-29 00:05:14,996 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Ended with exit code 0 [2021-10-29 00:05:14,997 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:14,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:14,997 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:15,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-10-29 00:05:15,034 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 [2021-10-29 00:05:15,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:15,044 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-29 00:05:15,044 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-29 00:05:15,044 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-29 00:05:15,044 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-29 00:05:15,047 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-29 00:05:15,047 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-29 00:05:15,086 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-29 00:05:15,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:15,127 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:15,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:15,128 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:15,130 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 [2021-10-29 00:05:15,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-10-29 00:05:15,140 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-29 00:05:15,140 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-29 00:05:15,141 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-29 00:05:15,141 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-29 00:05:15,141 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-29 00:05:15,142 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-29 00:05:15,142 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-29 00:05:15,144 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-29 00:05:15,147 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-29 00:05:15,147 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-29 00:05:15,147 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:15,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:15,148 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:15,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2021-10-29 00:05:15,150 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-29 00:05:15,150 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-29 00:05:15,150 INFO L513 LassoAnalysis]: Proved termination. [2021-10-29 00:05:15,150 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-29 00:05:15,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:15,175 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-29 00:05:15,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:15,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:15,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 00:05:15,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:15,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:15,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-29 00:05:15,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:15,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:15,256 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 [2021-10-29 00:05:15,257 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 109 states and 142 transitions. cyclomatic complexity: 46 Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2021-10-29 00:05:15,306 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 109 states and 142 transitions. cyclomatic complexity: 46. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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 215 states and 277 transitions. Complement of second has 7 states. [2021-10-29 00:05:15,310 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 [2021-10-29 00:05:15,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2021-10-29 00:05:15,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2021-10-29 00:05:15,311 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 8 letters. Loop has 4 letters. [2021-10-29 00:05:15,312 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:05:15,312 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 12 letters. Loop has 4 letters. [2021-10-29 00:05:15,313 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:05:15,313 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 8 letters. Loop has 8 letters. [2021-10-29 00:05:15,314 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:05:15,314 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 215 states and 277 transitions. [2021-10-29 00:05:15,318 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 32 [2021-10-29 00:05:15,320 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 215 states to 187 states and 239 transitions. [2021-10-29 00:05:15,320 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 69 [2021-10-29 00:05:15,320 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 74 [2021-10-29 00:05:15,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 187 states and 239 transitions. [2021-10-29 00:05:15,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-29 00:05:15,321 INFO L681 BuchiCegarLoop]: Abstraction has 187 states and 239 transitions. [2021-10-29 00:05:15,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states and 239 transitions. [2021-10-29 00:05:15,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 167. [2021-10-29 00:05:15,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 167 states have (on average 1.3053892215568863) internal successors, (218), 166 states have internal predecessors, (218), 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) [2021-10-29 00:05:15,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 218 transitions. [2021-10-29 00:05:15,338 INFO L704 BuchiCegarLoop]: Abstraction has 167 states and 218 transitions. [2021-10-29 00:05:15,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:05:15,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 00:05:15,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 00:05:15,340 INFO L87 Difference]: Start difference. First operand 167 states and 218 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:15,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:15,367 INFO L93 Difference]: Finished difference Result 162 states and 201 transitions. [2021-10-29 00:05:15,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 00:05:15,368 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 162 states and 201 transitions. [2021-10-29 00:05:15,371 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 28 [2021-10-29 00:05:15,372 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 162 states to 110 states and 138 transitions. [2021-10-29 00:05:15,372 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 61 [2021-10-29 00:05:15,372 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 64 [2021-10-29 00:05:15,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 110 states and 138 transitions. [2021-10-29 00:05:15,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-29 00:05:15,373 INFO L681 BuchiCegarLoop]: Abstraction has 110 states and 138 transitions. [2021-10-29 00:05:15,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states and 138 transitions. [2021-10-29 00:05:15,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 83. [2021-10-29 00:05:15,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 83 states have (on average 1.2409638554216869) internal successors, (103), 82 states have internal predecessors, (103), 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) [2021-10-29 00:05:15,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 103 transitions. [2021-10-29 00:05:15,377 INFO L704 BuchiCegarLoop]: Abstraction has 83 states and 103 transitions. [2021-10-29 00:05:15,377 INFO L587 BuchiCegarLoop]: Abstraction has 83 states and 103 transitions. [2021-10-29 00:05:15,377 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-10-29 00:05:15,377 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 83 states and 103 transitions. [2021-10-29 00:05:15,378 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2021-10-29 00:05:15,378 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-29 00:05:15,378 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-29 00:05:15,379 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1] [2021-10-29 00:05:15,379 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [3, 2, 2, 2, 1, 1, 1] [2021-10-29 00:05:15,379 INFO L791 eck$LassoCheckResult]: Stem: 2157#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 2158#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2171#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 2174#L12-2 assume !(main_~i~0 <= 0); 2173#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 2170#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2161#L12 assume !(main_~i~0 >= 10); 2162#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 2218#L15-1 [2021-10-29 00:05:15,379 INFO L793 eck$LassoCheckResult]: Loop: 2218#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 2153#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2154#L12 assume !(main_~i~0 >= 10); 2219#L12-2 assume !(main_~i~0 <= 0); 2220#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 2229#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2228#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 2149#L12-2 assume !(main_~i~0 <= 0); 2150#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 2223#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2222#L12 assume !(main_~i~0 >= 10); 2221#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 2218#L15-1 [2021-10-29 00:05:15,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:15,380 INFO L85 PathProgramCache]: Analyzing trace with hash 612845445, now seen corresponding path program 1 times [2021-10-29 00:05:15,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:15,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541737522] [2021-10-29 00:05:15,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:15,380 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:15,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:15,434 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:15,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:05:15,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541737522] [2021-10-29 00:05:15,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541737522] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:15,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795133554] [2021-10-29 00:05:15,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:15,435 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:15,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:15,439 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:05:15,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2021-10-29 00:05:15,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:15,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 00:05:15,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:15,520 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:15,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795133554] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:15,520 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-29 00:05:15,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-10-29 00:05:15,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981865699] [2021-10-29 00:05:15,521 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-29 00:05:15,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:15,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1192554916, now seen corresponding path program 1 times [2021-10-29 00:05:15,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:15,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835610627] [2021-10-29 00:05:15,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:15,522 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:15,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:15,546 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-29 00:05:15,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:05:15,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835610627] [2021-10-29 00:05:15,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835610627] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:15,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957602299] [2021-10-29 00:05:15,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:15,547 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:15,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:15,555 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:05:15,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2021-10-29 00:05:15,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:15,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 00:05:15,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:15,658 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-29 00:05:15,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957602299] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:15,659 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-29 00:05:15,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-10-29 00:05:15,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028768302] [2021-10-29 00:05:15,660 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-29 00:05:15,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:05:15,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 00:05:15,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 00:05:15,663 INFO L87 Difference]: Start difference. First operand 83 states and 103 transitions. cyclomatic complexity: 28 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) [2021-10-29 00:05:15,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:15,686 INFO L93 Difference]: Finished difference Result 87 states and 106 transitions. [2021-10-29 00:05:15,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 00:05:15,690 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 87 states and 106 transitions. [2021-10-29 00:05:15,692 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 21 [2021-10-29 00:05:15,692 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 87 states to 80 states and 98 transitions. [2021-10-29 00:05:15,693 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 43 [2021-10-29 00:05:15,693 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2021-10-29 00:05:15,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 98 transitions. [2021-10-29 00:05:15,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-29 00:05:15,693 INFO L681 BuchiCegarLoop]: Abstraction has 80 states and 98 transitions. [2021-10-29 00:05:15,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states and 98 transitions. [2021-10-29 00:05:15,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 68. [2021-10-29 00:05:15,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 68 states have (on average 1.2352941176470589) internal successors, (84), 67 states have internal predecessors, (84), 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) [2021-10-29 00:05:15,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 84 transitions. [2021-10-29 00:05:15,696 INFO L704 BuchiCegarLoop]: Abstraction has 68 states and 84 transitions. [2021-10-29 00:05:15,696 INFO L587 BuchiCegarLoop]: Abstraction has 68 states and 84 transitions. [2021-10-29 00:05:15,696 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-10-29 00:05:15,696 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 68 states and 84 transitions. [2021-10-29 00:05:15,697 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-10-29 00:05:15,697 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-29 00:05:15,697 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-29 00:05:15,697 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 1, 1, 1, 1, 1] [2021-10-29 00:05:15,697 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-29 00:05:15,698 INFO L791 eck$LassoCheckResult]: Stem: 2390#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 2391#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2407#L12 assume !(main_~i~0 >= 10); 2408#L12-2 assume !(main_~i~0 <= 0); 2447#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 2445#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2443#L12 assume !(main_~i~0 >= 10); 2440#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 2437#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 2434#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2414#L12 assume !(main_~i~0 >= 10); 2415#L12-2 [2021-10-29 00:05:15,698 INFO L793 eck$LassoCheckResult]: Loop: 2415#L12-2 assume !(main_~i~0 <= 0); 2429#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 2428#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2426#L12 assume !(main_~i~0 >= 10); 2415#L12-2 [2021-10-29 00:05:15,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:15,698 INFO L85 PathProgramCache]: Analyzing trace with hash 52759419, now seen corresponding path program 2 times [2021-10-29 00:05:15,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:15,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133612926] [2021-10-29 00:05:15,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:15,699 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:15,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:15,705 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:05:15,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:15,710 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:05:15,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:15,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1573482, now seen corresponding path program 2 times [2021-10-29 00:05:15,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:15,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909238385] [2021-10-29 00:05:15,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:15,711 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:15,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:15,715 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:05:15,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:15,718 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:05:15,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:15,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1971928860, now seen corresponding path program 3 times [2021-10-29 00:05:15,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:15,719 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152248968] [2021-10-29 00:05:15,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:15,719 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:15,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:15,725 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:05:15,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:15,731 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:05:15,761 INFO L210 LassoAnalysis]: Preferences: [2021-10-29 00:05:15,761 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-29 00:05:15,761 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-29 00:05:15,761 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-29 00:05:15,762 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-29 00:05:15,762 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:15,762 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-29 00:05:15,762 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-29 00:05:15,762 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration10_Loop [2021-10-29 00:05:15,762 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-29 00:05:15,763 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-29 00:05:15,764 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:15,766 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:15,769 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:15,775 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:15,823 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-29 00:05:15,823 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-29 00:05:15,824 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:15,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:15,831 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:15,835 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-29 00:05:15,835 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:05:15,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2021-10-29 00:05:15,867 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-29 00:05:15,867 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: [] [2021-10-29 00:05:15,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:15,892 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:15,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:15,894 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:15,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2021-10-29 00:05:15,897 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-29 00:05:15,897 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:05:15,912 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-29 00:05:15,912 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_13=1} Honda state: {v_rep~unnamed0~0~true_13=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-29 00:05:15,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:15,937 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:15,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:15,938 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:15,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2021-10-29 00:05:15,939 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-29 00:05:15,940 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:05:15,973 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Ended with exit code 0 [2021-10-29 00:05:15,973 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:15,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:15,974 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:15,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2021-10-29 00:05:15,976 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-29 00:05:15,976 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:05:16,017 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-29 00:05:16,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:16,020 INFO L210 LassoAnalysis]: Preferences: [2021-10-29 00:05:16,020 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-29 00:05:16,020 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-29 00:05:16,020 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-29 00:05:16,020 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-29 00:05:16,020 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:16,020 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-29 00:05:16,020 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-29 00:05:16,020 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration10_Loop [2021-10-29 00:05:16,020 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-29 00:05:16,020 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-29 00:05:16,021 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:16,025 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:16,031 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:16,033 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:16,071 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-29 00:05:16,071 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-29 00:05:16,071 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:16,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:16,072 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:16,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2021-10-29 00:05:16,079 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 [2021-10-29 00:05:16,087 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-29 00:05:16,087 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-29 00:05:16,087 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-29 00:05:16,087 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-29 00:05:16,087 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-29 00:05:16,088 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-29 00:05:16,088 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-29 00:05:16,089 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-29 00:05:16,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:16,113 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:16,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:16,114 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:16,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2021-10-29 00:05:16,116 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 [2021-10-29 00:05:16,124 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-29 00:05:16,124 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-29 00:05:16,124 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-29 00:05:16,124 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-29 00:05:16,125 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-29 00:05:16,125 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-29 00:05:16,125 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-29 00:05:16,135 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-29 00:05:16,137 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-29 00:05:16,138 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-29 00:05:16,138 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:16,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:16,147 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:16,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2021-10-29 00:05:16,148 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-29 00:05:16,149 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-29 00:05:16,149 INFO L513 LassoAnalysis]: Proved termination. [2021-10-29 00:05:16,149 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 17 Supporting invariants [] [2021-10-29 00:05:16,189 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Ended with exit code 0 [2021-10-29 00:05:16,189 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-29 00:05:16,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:16,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:16,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 00:05:16,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:16,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:16,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-29 00:05:16,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:16,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:16,282 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 [2021-10-29 00:05:16,282 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 68 states and 84 transitions. cyclomatic complexity: 23 Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:16,328 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 68 states and 84 transitions. cyclomatic complexity: 23. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 108 states and 129 transitions. Complement of second has 7 states. [2021-10-29 00:05:16,329 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 [2021-10-29 00:05:16,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:16,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2021-10-29 00:05:16,329 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 11 letters. Loop has 4 letters. [2021-10-29 00:05:16,330 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:05:16,330 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-29 00:05:16,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:16,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:16,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 00:05:16,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:16,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:16,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-29 00:05:16,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:16,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:16,421 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 [2021-10-29 00:05:16,422 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 68 states and 84 transitions. cyclomatic complexity: 23 Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:16,452 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 68 states and 84 transitions. cyclomatic complexity: 23. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 108 states and 129 transitions. Complement of second has 7 states. [2021-10-29 00:05:16,453 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 [2021-10-29 00:05:16,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:16,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2021-10-29 00:05:16,453 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 11 letters. Loop has 4 letters. [2021-10-29 00:05:16,453 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:05:16,454 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-29 00:05:16,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:16,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:16,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 00:05:16,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:16,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:16,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-29 00:05:16,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:16,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:16,527 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 [2021-10-29 00:05:16,527 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 68 states and 84 transitions. cyclomatic complexity: 23 Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:16,568 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 68 states and 84 transitions. cyclomatic complexity: 23. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 123 states and 147 transitions. Complement of second has 8 states. [2021-10-29 00:05:16,569 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 [2021-10-29 00:05:16,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:16,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2021-10-29 00:05:16,570 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 11 letters. Loop has 4 letters. [2021-10-29 00:05:16,570 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:05:16,571 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 15 letters. Loop has 4 letters. [2021-10-29 00:05:16,571 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:05:16,571 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 11 letters. Loop has 8 letters. [2021-10-29 00:05:16,571 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:05:16,571 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 123 states and 147 transitions. [2021-10-29 00:05:16,573 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 26 [2021-10-29 00:05:16,574 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 123 states to 88 states and 106 transitions. [2021-10-29 00:05:16,574 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2021-10-29 00:05:16,574 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2021-10-29 00:05:16,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 106 transitions. [2021-10-29 00:05:16,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-29 00:05:16,574 INFO L681 BuchiCegarLoop]: Abstraction has 88 states and 106 transitions. [2021-10-29 00:05:16,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states and 106 transitions. [2021-10-29 00:05:16,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 55. [2021-10-29 00:05:16,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 55 states have (on average 1.2545454545454546) internal successors, (69), 54 states have internal predecessors, (69), 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) [2021-10-29 00:05:16,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 69 transitions. [2021-10-29 00:05:16,577 INFO L704 BuchiCegarLoop]: Abstraction has 55 states and 69 transitions. [2021-10-29 00:05:16,577 INFO L587 BuchiCegarLoop]: Abstraction has 55 states and 69 transitions. [2021-10-29 00:05:16,577 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-10-29 00:05:16,577 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 55 states and 69 transitions. [2021-10-29 00:05:16,578 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-10-29 00:05:16,578 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-29 00:05:16,578 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-29 00:05:16,579 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 3, 2, 1, 1, 1, 1] [2021-10-29 00:05:16,579 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [4, 3, 3, 2, 2, 1, 1] [2021-10-29 00:05:16,579 INFO L791 eck$LassoCheckResult]: Stem: 2975#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 2976#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3010#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 3012#L12-2 assume !(main_~i~0 <= 0); 3011#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3009#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3008#L12 assume !(main_~i~0 >= 10); 3007#L12-2 assume !(main_~i~0 <= 0); 3005#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3003#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3001#L12 assume !(main_~i~0 >= 10); 2988#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 2994#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 2997#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2995#L12 assume !(main_~i~0 >= 10); 2993#L12-2 assume !(main_~i~0 <= 0); 2981#L15-1 [2021-10-29 00:05:16,579 INFO L793 eck$LassoCheckResult]: Loop: 2981#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 2971#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2972#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 2979#L12-2 assume !(main_~i~0 <= 0); 2977#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 2978#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3021#L12 assume !(main_~i~0 >= 10); 3006#L12-2 assume !(main_~i~0 <= 0); 2999#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3002#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3000#L12 assume !(main_~i~0 >= 10); 2998#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 2994#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 2997#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2995#L12 assume !(main_~i~0 >= 10); 2993#L12-2 assume !(main_~i~0 <= 0); 2981#L15-1 [2021-10-29 00:05:16,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:16,580 INFO L85 PathProgramCache]: Analyzing trace with hash -120270543, now seen corresponding path program 1 times [2021-10-29 00:05:16,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:16,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680297324] [2021-10-29 00:05:16,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:16,580 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:16,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:16,608 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:16,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:05:16,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680297324] [2021-10-29 00:05:16,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680297324] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:16,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091453283] [2021-10-29 00:05:16,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:16,609 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:16,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:16,610 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:05:16,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:16,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2021-10-29 00:05:16,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:16,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:16,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-29 00:05:16,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:16,790 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:16,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091453283] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:16,790 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-29 00:05:16,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-10-29 00:05:16,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909021506] [2021-10-29 00:05:16,791 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-29 00:05:16,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:16,791 INFO L85 PathProgramCache]: Analyzing trace with hash 511811097, now seen corresponding path program 2 times [2021-10-29 00:05:16,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:16,791 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67122188] [2021-10-29 00:05:16,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:16,792 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:16,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:16,816 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:16,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:05:16,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67122188] [2021-10-29 00:05:16,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67122188] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:16,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265920137] [2021-10-29 00:05:16,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-29 00:05:16,817 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:16,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:16,818 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:05:16,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2021-10-29 00:05:16,882 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-29 00:05:16,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 00:05:16,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-29 00:05:16,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:16,925 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:16,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265920137] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:16,926 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-29 00:05:16,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-10-29 00:05:16,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581453052] [2021-10-29 00:05:16,926 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-29 00:05:16,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:05:16,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 00:05:16,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-29 00:05:16,928 INFO L87 Difference]: Start difference. First operand 55 states and 69 transitions. cyclomatic complexity: 20 Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:16,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:16,952 INFO L93 Difference]: Finished difference Result 81 states and 100 transitions. [2021-10-29 00:05:16,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 00:05:16,953 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 81 states and 100 transitions. [2021-10-29 00:05:16,954 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 21 [2021-10-29 00:05:16,954 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 81 states to 79 states and 97 transitions. [2021-10-29 00:05:16,955 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2021-10-29 00:05:16,955 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2021-10-29 00:05:16,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 79 states and 97 transitions. [2021-10-29 00:05:16,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-29 00:05:16,955 INFO L681 BuchiCegarLoop]: Abstraction has 79 states and 97 transitions. [2021-10-29 00:05:16,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states and 97 transitions. [2021-10-29 00:05:16,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 66. [2021-10-29 00:05:16,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 66 states have (on average 1.2424242424242424) internal successors, (82), 65 states have internal predecessors, (82), 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) [2021-10-29 00:05:16,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 82 transitions. [2021-10-29 00:05:16,958 INFO L704 BuchiCegarLoop]: Abstraction has 66 states and 82 transitions. [2021-10-29 00:05:16,958 INFO L587 BuchiCegarLoop]: Abstraction has 66 states and 82 transitions. [2021-10-29 00:05:16,958 INFO L425 BuchiCegarLoop]: ======== Iteration 12============ [2021-10-29 00:05:16,958 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 66 states and 82 transitions. [2021-10-29 00:05:16,959 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 20 [2021-10-29 00:05:16,959 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-29 00:05:16,959 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-29 00:05:16,960 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 4, 4, 3, 1, 1, 1, 1] [2021-10-29 00:05:16,960 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [5, 4, 4, 3, 2, 1, 1] [2021-10-29 00:05:16,960 INFO L791 eck$LassoCheckResult]: Stem: 3212#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 3213#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3211#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 3267#L12-2 assume !(main_~i~0 <= 0); 3266#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3265#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3214#L12 assume !(main_~i~0 >= 10); 3215#L12-2 assume !(main_~i~0 <= 0); 3269#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3268#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3216#L12 assume !(main_~i~0 >= 10); 3217#L12-2 assume !(main_~i~0 <= 0); 3258#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3255#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3256#L12 assume !(main_~i~0 >= 10); 3235#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 3227#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 3228#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3223#L12 assume !(main_~i~0 >= 10); 3224#L12-2 assume !(main_~i~0 <= 0); 3218#L15-1 [2021-10-29 00:05:16,960 INFO L793 eck$LassoCheckResult]: Loop: 3218#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 3219#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3264#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 3204#L12-2 assume !(main_~i~0 <= 0); 3205#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3208#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3209#L12 assume !(main_~i~0 >= 10); 3263#L12-2 assume !(main_~i~0 <= 0); 3262#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3261#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3260#L12 assume !(main_~i~0 >= 10); 3259#L12-2 assume !(main_~i~0 <= 0); 3257#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3254#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3230#L12 assume !(main_~i~0 >= 10); 3231#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 3227#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 3228#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3223#L12 assume !(main_~i~0 >= 10); 3224#L12-2 assume !(main_~i~0 <= 0); 3218#L15-1 [2021-10-29 00:05:16,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:16,961 INFO L85 PathProgramCache]: Analyzing trace with hash -353280474, now seen corresponding path program 2 times [2021-10-29 00:05:16,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:16,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578751597] [2021-10-29 00:05:16,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:16,962 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:16,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:16,996 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:16,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:05:16,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578751597] [2021-10-29 00:05:16,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578751597] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:16,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859729974] [2021-10-29 00:05:16,997 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-29 00:05:16,997 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:16,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:16,999 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:05:17,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2021-10-29 00:05:17,092 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-29 00:05:17,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 00:05:17,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-29 00:05:17,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:17,166 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:17,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859729974] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:17,167 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-29 00:05:17,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-29 00:05:17,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306913426] [2021-10-29 00:05:17,167 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-29 00:05:17,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:17,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1575127282, now seen corresponding path program 3 times [2021-10-29 00:05:17,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:17,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63086800] [2021-10-29 00:05:17,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:17,169 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:17,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:17,219 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 25 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:17,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:05:17,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63086800] [2021-10-29 00:05:17,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63086800] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:17,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127852596] [2021-10-29 00:05:17,220 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-29 00:05:17,220 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:17,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:17,226 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:05:17,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2021-10-29 00:05:17,327 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-29 00:05:17,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 00:05:17,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-29 00:05:17,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:17,392 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 25 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:17,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127852596] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:17,393 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-29 00:05:17,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-29 00:05:17,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871318106] [2021-10-29 00:05:17,394 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-29 00:05:17,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:05:17,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 00:05:17,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-29 00:05:17,395 INFO L87 Difference]: Start difference. First operand 66 states and 82 transitions. cyclomatic complexity: 22 Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:17,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:17,427 INFO L93 Difference]: Finished difference Result 97 states and 119 transitions. [2021-10-29 00:05:17,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 00:05:17,427 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 97 states and 119 transitions. [2021-10-29 00:05:17,428 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 25 [2021-10-29 00:05:17,429 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 97 states to 95 states and 116 transitions. [2021-10-29 00:05:17,429 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2021-10-29 00:05:17,429 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2021-10-29 00:05:17,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 95 states and 116 transitions. [2021-10-29 00:05:17,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-29 00:05:17,430 INFO L681 BuchiCegarLoop]: Abstraction has 95 states and 116 transitions. [2021-10-29 00:05:17,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states and 116 transitions. [2021-10-29 00:05:17,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 78. [2021-10-29 00:05:17,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 78 states have (on average 1.2307692307692308) internal successors, (96), 77 states have internal predecessors, (96), 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) [2021-10-29 00:05:17,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 96 transitions. [2021-10-29 00:05:17,432 INFO L704 BuchiCegarLoop]: Abstraction has 78 states and 96 transitions. [2021-10-29 00:05:17,433 INFO L587 BuchiCegarLoop]: Abstraction has 78 states and 96 transitions. [2021-10-29 00:05:17,433 INFO L425 BuchiCegarLoop]: ======== Iteration 13============ [2021-10-29 00:05:17,433 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 78 states and 96 transitions. [2021-10-29 00:05:17,433 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 24 [2021-10-29 00:05:17,434 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-29 00:05:17,434 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-29 00:05:17,435 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [6, 5, 5, 4, 1, 1, 1, 1] [2021-10-29 00:05:17,435 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [6, 5, 5, 4, 2, 1, 1] [2021-10-29 00:05:17,436 INFO L791 eck$LassoCheckResult]: Stem: 3502#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 3503#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3501#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 3567#L12-2 assume !(main_~i~0 <= 0); 3566#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3565#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3505#L12 assume !(main_~i~0 >= 10); 3506#L12-2 assume !(main_~i~0 <= 0); 3571#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3570#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3507#L12 assume !(main_~i~0 >= 10); 3508#L12-2 assume !(main_~i~0 <= 0); 3569#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3568#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3545#L12 assume !(main_~i~0 >= 10); 3564#L12-2 assume !(main_~i~0 <= 0); 3548#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3544#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3546#L12 assume !(main_~i~0 >= 10); 3523#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 3517#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 3518#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3513#L12 assume !(main_~i~0 >= 10); 3514#L12-2 assume !(main_~i~0 <= 0); 3509#L15-1 [2021-10-29 00:05:17,436 INFO L793 eck$LassoCheckResult]: Loop: 3509#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 3498#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3499#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 3494#L12-2 assume !(main_~i~0 <= 0); 3495#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3504#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3563#L12 assume !(main_~i~0 >= 10); 3562#L12-2 assume !(main_~i~0 <= 0); 3561#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3560#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3559#L12 assume !(main_~i~0 >= 10); 3558#L12-2 assume !(main_~i~0 <= 0); 3557#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3556#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3555#L12 assume !(main_~i~0 >= 10); 3554#L12-2 assume !(main_~i~0 <= 0); 3547#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3543#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3524#L12 assume !(main_~i~0 >= 10); 3525#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 3517#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 3518#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3513#L12 assume !(main_~i~0 >= 10); 3514#L12-2 assume !(main_~i~0 <= 0); 3509#L15-1 [2021-10-29 00:05:17,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:17,437 INFO L85 PathProgramCache]: Analyzing trace with hash 828663963, now seen corresponding path program 3 times [2021-10-29 00:05:17,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:17,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392302934] [2021-10-29 00:05:17,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:17,438 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:17,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:17,510 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 27 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:17,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:05:17,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392302934] [2021-10-29 00:05:17,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392302934] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:17,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045547900] [2021-10-29 00:05:17,511 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-29 00:05:17,511 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:17,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:17,513 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:05:17,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2021-10-29 00:05:17,589 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-10-29 00:05:17,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 00:05:17,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-29 00:05:17,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:17,677 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 27 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:17,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045547900] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:17,678 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-29 00:05:17,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-10-29 00:05:17,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251700319] [2021-10-29 00:05:17,678 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-29 00:05:17,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:17,679 INFO L85 PathProgramCache]: Analyzing trace with hash -779498109, now seen corresponding path program 4 times [2021-10-29 00:05:17,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:17,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585373691] [2021-10-29 00:05:17,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:17,679 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:17,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:17,730 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 32 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:17,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:05:17,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585373691] [2021-10-29 00:05:17,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585373691] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:17,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542052302] [2021-10-29 00:05:17,731 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-29 00:05:17,732 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:17,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:17,735 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:05:17,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2021-10-29 00:05:17,837 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-29 00:05:17,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 00:05:17,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-29 00:05:17,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:17,925 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 32 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:17,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542052302] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:17,926 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-29 00:05:17,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-10-29 00:05:17,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672960501] [2021-10-29 00:05:17,927 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-29 00:05:17,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:05:17,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 00:05:17,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-29 00:05:17,928 INFO L87 Difference]: Start difference. First operand 78 states and 96 transitions. cyclomatic complexity: 24 Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:17,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:17,983 INFO L93 Difference]: Finished difference Result 113 states and 138 transitions. [2021-10-29 00:05:17,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 00:05:17,984 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 113 states and 138 transitions. [2021-10-29 00:05:17,985 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 29 [2021-10-29 00:05:17,987 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 113 states to 111 states and 135 transitions. [2021-10-29 00:05:17,987 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 37 [2021-10-29 00:05:17,987 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 37 [2021-10-29 00:05:17,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 111 states and 135 transitions. [2021-10-29 00:05:17,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-29 00:05:17,988 INFO L681 BuchiCegarLoop]: Abstraction has 111 states and 135 transitions. [2021-10-29 00:05:17,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states and 135 transitions. [2021-10-29 00:05:17,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 90. [2021-10-29 00:05:17,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 90 states have (on average 1.2222222222222223) internal successors, (110), 89 states have internal predecessors, (110), 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) [2021-10-29 00:05:17,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 110 transitions. [2021-10-29 00:05:17,992 INFO L704 BuchiCegarLoop]: Abstraction has 90 states and 110 transitions. [2021-10-29 00:05:17,992 INFO L587 BuchiCegarLoop]: Abstraction has 90 states and 110 transitions. [2021-10-29 00:05:17,993 INFO L425 BuchiCegarLoop]: ======== Iteration 14============ [2021-10-29 00:05:17,993 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 90 states and 110 transitions. [2021-10-29 00:05:17,994 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 28 [2021-10-29 00:05:17,994 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-29 00:05:17,994 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-29 00:05:17,999 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [7, 6, 6, 5, 1, 1, 1, 1] [2021-10-29 00:05:18,000 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [7, 6, 6, 5, 2, 1, 1] [2021-10-29 00:05:18,002 INFO L791 eck$LassoCheckResult]: Stem: 3842#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 3843#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3847#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 3919#L12-2 assume !(main_~i~0 <= 0); 3918#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3917#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3849#L12 assume !(main_~i~0 >= 10); 3850#L12-2 assume !(main_~i~0 <= 0); 3927#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3926#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3851#L12 assume !(main_~i~0 >= 10); 3852#L12-2 assume !(main_~i~0 <= 0); 3925#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3924#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3923#L12 assume !(main_~i~0 >= 10); 3922#L12-2 assume !(main_~i~0 <= 0); 3921#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3920#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3893#L12 assume !(main_~i~0 >= 10); 3916#L12-2 assume !(main_~i~0 <= 0); 3896#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3892#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3894#L12 assume !(main_~i~0 >= 10); 3869#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 3861#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 3862#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3857#L12 assume !(main_~i~0 >= 10); 3858#L12-2 assume !(main_~i~0 <= 0); 3853#L15-1 [2021-10-29 00:05:18,003 INFO L793 eck$LassoCheckResult]: Loop: 3853#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 3844#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3845#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 3838#L12-2 assume !(main_~i~0 <= 0); 3839#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3848#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3915#L12 assume !(main_~i~0 >= 10); 3914#L12-2 assume !(main_~i~0 <= 0); 3913#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3912#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3911#L12 assume !(main_~i~0 >= 10); 3910#L12-2 assume !(main_~i~0 <= 0); 3909#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3908#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3907#L12 assume !(main_~i~0 >= 10); 3906#L12-2 assume !(main_~i~0 <= 0); 3905#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3904#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3903#L12 assume !(main_~i~0 >= 10); 3902#L12-2 assume !(main_~i~0 <= 0); 3895#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3891#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3864#L12 assume !(main_~i~0 >= 10); 3865#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 3861#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 3862#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3857#L12 assume !(main_~i~0 >= 10); 3858#L12-2 assume !(main_~i~0 <= 0); 3853#L15-1 [2021-10-29 00:05:18,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:18,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1716309872, now seen corresponding path program 4 times [2021-10-29 00:05:18,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:18,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239963226] [2021-10-29 00:05:18,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:18,005 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:18,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:18,073 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 33 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:18,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:05:18,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239963226] [2021-10-29 00:05:18,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239963226] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:18,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987209891] [2021-10-29 00:05:18,074 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-29 00:05:18,074 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:18,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:18,080 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:05:18,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2021-10-29 00:05:18,210 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-29 00:05:18,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 00:05:18,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-29 00:05:18,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:18,316 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 33 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:18,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987209891] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:18,316 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-29 00:05:18,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-10-29 00:05:18,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635154230] [2021-10-29 00:05:18,317 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-29 00:05:18,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:18,318 INFO L85 PathProgramCache]: Analyzing trace with hash 759947640, now seen corresponding path program 5 times [2021-10-29 00:05:18,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:18,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669321343] [2021-10-29 00:05:18,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:18,320 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:18,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:18,391 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 39 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:18,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:05:18,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669321343] [2021-10-29 00:05:18,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669321343] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:18,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327632686] [2021-10-29 00:05:18,392 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-29 00:05:18,392 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:18,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:18,393 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:05:18,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2021-10-29 00:05:18,504 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-29 00:05:18,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 00:05:18,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-29 00:05:18,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:18,596 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 39 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:18,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327632686] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:18,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-29 00:05:18,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-10-29 00:05:18,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385253813] [2021-10-29 00:05:18,597 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-29 00:05:18,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:05:18,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 00:05:18,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-29 00:05:18,598 INFO L87 Difference]: Start difference. First operand 90 states and 110 transitions. cyclomatic complexity: 26 Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 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) [2021-10-29 00:05:18,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:18,641 INFO L93 Difference]: Finished difference Result 129 states and 157 transitions. [2021-10-29 00:05:18,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 00:05:18,642 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 129 states and 157 transitions. [2021-10-29 00:05:18,643 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 33 [2021-10-29 00:05:18,644 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 129 states to 127 states and 154 transitions. [2021-10-29 00:05:18,645 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2021-10-29 00:05:18,645 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2021-10-29 00:05:18,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 127 states and 154 transitions. [2021-10-29 00:05:18,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-29 00:05:18,645 INFO L681 BuchiCegarLoop]: Abstraction has 127 states and 154 transitions. [2021-10-29 00:05:18,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states and 154 transitions. [2021-10-29 00:05:18,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 102. [2021-10-29 00:05:18,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 102 states have (on average 1.2156862745098038) internal successors, (124), 101 states have internal predecessors, (124), 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) [2021-10-29 00:05:18,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 124 transitions. [2021-10-29 00:05:18,649 INFO L704 BuchiCegarLoop]: Abstraction has 102 states and 124 transitions. [2021-10-29 00:05:18,649 INFO L587 BuchiCegarLoop]: Abstraction has 102 states and 124 transitions. [2021-10-29 00:05:18,649 INFO L425 BuchiCegarLoop]: ======== Iteration 15============ [2021-10-29 00:05:18,650 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 102 states and 124 transitions. [2021-10-29 00:05:18,650 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 32 [2021-10-29 00:05:18,651 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-29 00:05:18,651 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-29 00:05:18,652 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [8, 7, 7, 6, 1, 1, 1, 1] [2021-10-29 00:05:18,652 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [8, 7, 7, 6, 2, 1, 1] [2021-10-29 00:05:18,652 INFO L791 eck$LassoCheckResult]: Stem: 4240#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 4241#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4245#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 4325#L12-2 assume !(main_~i~0 <= 0); 4324#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4323#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4247#L12 assume !(main_~i~0 >= 10); 4248#L12-2 assume !(main_~i~0 <= 0); 4337#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4336#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4249#L12 assume !(main_~i~0 >= 10); 4250#L12-2 assume !(main_~i~0 <= 0); 4335#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4334#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4333#L12 assume !(main_~i~0 >= 10); 4332#L12-2 assume !(main_~i~0 <= 0); 4331#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4330#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4329#L12 assume !(main_~i~0 >= 10); 4328#L12-2 assume !(main_~i~0 <= 0); 4327#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4326#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4295#L12 assume !(main_~i~0 >= 10); 4322#L12-2 assume !(main_~i~0 <= 0); 4298#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4294#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4296#L12 assume !(main_~i~0 >= 10); 4267#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 4259#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 4260#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4255#L12 assume !(main_~i~0 >= 10); 4256#L12-2 assume !(main_~i~0 <= 0); 4251#L15-1 [2021-10-29 00:05:18,652 INFO L793 eck$LassoCheckResult]: Loop: 4251#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 4242#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4243#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 4236#L12-2 assume !(main_~i~0 <= 0); 4237#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4246#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4321#L12 assume !(main_~i~0 >= 10); 4320#L12-2 assume !(main_~i~0 <= 0); 4319#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4318#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4317#L12 assume !(main_~i~0 >= 10); 4316#L12-2 assume !(main_~i~0 <= 0); 4315#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4314#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4313#L12 assume !(main_~i~0 >= 10); 4312#L12-2 assume !(main_~i~0 <= 0); 4311#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4310#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4309#L12 assume !(main_~i~0 >= 10); 4308#L12-2 assume !(main_~i~0 <= 0); 4307#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4306#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4305#L12 assume !(main_~i~0 >= 10); 4304#L12-2 assume !(main_~i~0 <= 0); 4297#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4293#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4262#L12 assume !(main_~i~0 >= 10); 4263#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 4259#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 4260#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4255#L12 assume !(main_~i~0 >= 10); 4256#L12-2 assume !(main_~i~0 <= 0); 4251#L15-1 [2021-10-29 00:05:18,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:18,653 INFO L85 PathProgramCache]: Analyzing trace with hash 750974469, now seen corresponding path program 5 times [2021-10-29 00:05:18,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:18,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464161304] [2021-10-29 00:05:18,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:18,654 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:18,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:18,717 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 39 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:18,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:05:18,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464161304] [2021-10-29 00:05:18,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464161304] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:18,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827328130] [2021-10-29 00:05:18,718 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-29 00:05:18,718 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:18,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:18,719 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:05:18,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2021-10-29 00:05:18,839 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-10-29 00:05:18,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 00:05:18,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-29 00:05:18,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:18,951 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 39 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:18,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827328130] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:18,951 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-29 00:05:18,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-10-29 00:05:18,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992033368] [2021-10-29 00:05:18,952 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-29 00:05:18,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:18,953 INFO L85 PathProgramCache]: Analyzing trace with hash -246877459, now seen corresponding path program 6 times [2021-10-29 00:05:18,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:18,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355019984] [2021-10-29 00:05:18,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:18,953 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:18,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:19,025 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 46 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:19,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:05:19,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355019984] [2021-10-29 00:05:19,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355019984] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:19,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802269299] [2021-10-29 00:05:19,027 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-29 00:05:19,027 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:19,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:19,029 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:05:19,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2021-10-29 00:05:19,193 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-10-29 00:05:19,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 00:05:19,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-29 00:05:19,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:19,302 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 46 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:19,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802269299] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:19,303 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-29 00:05:19,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-10-29 00:05:19,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442746209] [2021-10-29 00:05:19,304 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-29 00:05:19,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:05:19,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-29 00:05:19,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-29 00:05:19,306 INFO L87 Difference]: Start difference. First operand 102 states and 124 transitions. cyclomatic complexity: 28 Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 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) [2021-10-29 00:05:19,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:19,374 INFO L93 Difference]: Finished difference Result 145 states and 176 transitions. [2021-10-29 00:05:19,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-29 00:05:19,375 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 145 states and 176 transitions. [2021-10-29 00:05:19,376 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 37 [2021-10-29 00:05:19,378 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 145 states to 143 states and 173 transitions. [2021-10-29 00:05:19,378 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 45 [2021-10-29 00:05:19,379 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 45 [2021-10-29 00:05:19,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 143 states and 173 transitions. [2021-10-29 00:05:19,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-29 00:05:19,379 INFO L681 BuchiCegarLoop]: Abstraction has 143 states and 173 transitions. [2021-10-29 00:05:19,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states and 173 transitions. [2021-10-29 00:05:19,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 114. [2021-10-29 00:05:19,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 114 states have (on average 1.2105263157894737) internal successors, (138), 113 states have internal predecessors, (138), 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) [2021-10-29 00:05:19,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 138 transitions. [2021-10-29 00:05:19,383 INFO L704 BuchiCegarLoop]: Abstraction has 114 states and 138 transitions. [2021-10-29 00:05:19,383 INFO L587 BuchiCegarLoop]: Abstraction has 114 states and 138 transitions. [2021-10-29 00:05:19,383 INFO L425 BuchiCegarLoop]: ======== Iteration 16============ [2021-10-29 00:05:19,383 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 114 states and 138 transitions. [2021-10-29 00:05:19,384 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 36 [2021-10-29 00:05:19,384 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-29 00:05:19,385 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-29 00:05:19,386 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [9, 8, 8, 7, 1, 1, 1, 1] [2021-10-29 00:05:19,386 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [9, 8, 8, 7, 2, 1, 1] [2021-10-29 00:05:19,386 INFO L791 eck$LassoCheckResult]: Stem: 4696#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 4697#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4695#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 4785#L12-2 assume !(main_~i~0 <= 0); 4784#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4783#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4699#L12 assume !(main_~i~0 >= 10); 4700#L12-2 assume !(main_~i~0 <= 0); 4800#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4798#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4701#L12 assume !(main_~i~0 >= 10); 4702#L12-2 assume !(main_~i~0 <= 0); 4801#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4799#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4797#L12 assume !(main_~i~0 >= 10); 4796#L12-2 assume !(main_~i~0 <= 0); 4795#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4794#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4793#L12 assume !(main_~i~0 >= 10); 4792#L12-2 assume !(main_~i~0 <= 0); 4791#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4790#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4789#L12 assume !(main_~i~0 >= 10); 4788#L12-2 assume !(main_~i~0 <= 0); 4787#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4786#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4750#L12 assume !(main_~i~0 >= 10); 4760#L12-2 assume !(main_~i~0 <= 0); 4753#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4749#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4751#L12 assume !(main_~i~0 >= 10); 4719#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 4711#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 4712#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4707#L12 assume !(main_~i~0 >= 10); 4708#L12-2 assume !(main_~i~0 <= 0); 4703#L15-1 [2021-10-29 00:05:19,386 INFO L793 eck$LassoCheckResult]: Loop: 4703#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 4692#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4693#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 4688#L12-2 assume !(main_~i~0 <= 0); 4689#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4698#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4782#L12 assume !(main_~i~0 >= 10); 4781#L12-2 assume !(main_~i~0 <= 0); 4780#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4779#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4778#L12 assume !(main_~i~0 >= 10); 4777#L12-2 assume !(main_~i~0 <= 0); 4776#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4775#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4774#L12 assume !(main_~i~0 >= 10); 4773#L12-2 assume !(main_~i~0 <= 0); 4772#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4771#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4770#L12 assume !(main_~i~0 >= 10); 4769#L12-2 assume !(main_~i~0 <= 0); 4768#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4767#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4766#L12 assume !(main_~i~0 >= 10); 4765#L12-2 assume !(main_~i~0 <= 0); 4764#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4763#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4762#L12 assume !(main_~i~0 >= 10); 4761#L12-2 assume !(main_~i~0 <= 0); 4754#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4752#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4714#L12 assume !(main_~i~0 >= 10); 4715#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 4711#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 4712#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4707#L12 assume !(main_~i~0 >= 10); 4708#L12-2 assume !(main_~i~0 <= 0); 4703#L15-1 [2021-10-29 00:05:19,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:19,387 INFO L85 PathProgramCache]: Analyzing trace with hash 2128148730, now seen corresponding path program 6 times [2021-10-29 00:05:19,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:19,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310437097] [2021-10-29 00:05:19,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:19,388 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:19,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:19,503 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 45 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:19,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:05:19,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310437097] [2021-10-29 00:05:19,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310437097] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:19,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184250455] [2021-10-29 00:05:19,504 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-29 00:05:19,504 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:19,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:19,506 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:05:19,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2021-10-29 00:05:19,695 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-10-29 00:05:19,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 00:05:19,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-29 00:05:19,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:19,827 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 45 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:19,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184250455] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:19,828 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-29 00:05:19,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-10-29 00:05:19,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779949375] [2021-10-29 00:05:19,828 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-29 00:05:19,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:19,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1690714594, now seen corresponding path program 7 times [2021-10-29 00:05:19,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:19,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964192414] [2021-10-29 00:05:19,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:19,829 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:19,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:19,915 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 53 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:19,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:05:19,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964192414] [2021-10-29 00:05:19,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964192414] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:19,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134685608] [2021-10-29 00:05:19,916 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-29 00:05:19,916 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:19,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:19,923 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:05:19,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2021-10-29 00:05:20,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:20,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-29 00:05:20,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:20,231 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 53 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:20,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134685608] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:20,232 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-29 00:05:20,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-10-29 00:05:20,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881345] [2021-10-29 00:05:20,234 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-29 00:05:20,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:05:20,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-29 00:05:20,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-29 00:05:20,236 INFO L87 Difference]: Start difference. First operand 114 states and 138 transitions. cyclomatic complexity: 30 Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 00:05:20,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:20,300 INFO L93 Difference]: Finished difference Result 161 states and 195 transitions. [2021-10-29 00:05:20,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-29 00:05:20,301 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 161 states and 195 transitions. [2021-10-29 00:05:20,302 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 41 [2021-10-29 00:05:20,304 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 161 states to 159 states and 192 transitions. [2021-10-29 00:05:20,304 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 49 [2021-10-29 00:05:20,304 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 49 [2021-10-29 00:05:20,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 159 states and 192 transitions. [2021-10-29 00:05:20,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-29 00:05:20,305 INFO L681 BuchiCegarLoop]: Abstraction has 159 states and 192 transitions. [2021-10-29 00:05:20,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states and 192 transitions. [2021-10-29 00:05:20,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 126. [2021-10-29 00:05:20,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 126 states have (on average 1.2063492063492063) internal successors, (152), 125 states have internal predecessors, (152), 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) [2021-10-29 00:05:20,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 152 transitions. [2021-10-29 00:05:20,309 INFO L704 BuchiCegarLoop]: Abstraction has 126 states and 152 transitions. [2021-10-29 00:05:20,309 INFO L587 BuchiCegarLoop]: Abstraction has 126 states and 152 transitions. [2021-10-29 00:05:20,309 INFO L425 BuchiCegarLoop]: ======== Iteration 17============ [2021-10-29 00:05:20,310 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 126 states and 152 transitions. [2021-10-29 00:05:20,311 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 40 [2021-10-29 00:05:20,311 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-29 00:05:20,311 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-29 00:05:20,314 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [10, 9, 9, 8, 1, 1, 1, 1] [2021-10-29 00:05:20,314 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [10, 9, 9, 8, 2, 1, 1] [2021-10-29 00:05:20,315 INFO L791 eck$LassoCheckResult]: Stem: 5202#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; 5203#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5201#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 5299#L12-2 assume !(main_~i~0 <= 0); 5298#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5297#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5205#L12 assume !(main_~i~0 >= 10); 5206#L12-2 assume !(main_~i~0 <= 0); 5318#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5316#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5207#L12 assume !(main_~i~0 >= 10); 5208#L12-2 assume !(main_~i~0 <= 0); 5319#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5317#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5315#L12 assume !(main_~i~0 >= 10); 5314#L12-2 assume !(main_~i~0 <= 0); 5313#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5312#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5311#L12 assume !(main_~i~0 >= 10); 5310#L12-2 assume !(main_~i~0 <= 0); 5309#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5308#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5307#L12 assume !(main_~i~0 >= 10); 5306#L12-2 assume !(main_~i~0 <= 0); 5305#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5304#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5303#L12 assume !(main_~i~0 >= 10); 5302#L12-2 assume !(main_~i~0 <= 0); 5301#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5300#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5260#L12 assume !(main_~i~0 >= 10); 5270#L12-2 assume !(main_~i~0 <= 0); 5263#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5259#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5261#L12 assume !(main_~i~0 >= 10); 5225#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 5217#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 5218#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5213#L12 assume !(main_~i~0 >= 10); 5214#L12-2 assume !(main_~i~0 <= 0); 5209#L15-1 [2021-10-29 00:05:20,315 INFO L793 eck$LassoCheckResult]: Loop: 5209#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 5198#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5199#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 5194#L12-2 assume !(main_~i~0 <= 0); 5195#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5204#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5296#L12 assume !(main_~i~0 >= 10); 5295#L12-2 assume !(main_~i~0 <= 0); 5294#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5293#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5292#L12 assume !(main_~i~0 >= 10); 5291#L12-2 assume !(main_~i~0 <= 0); 5290#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5289#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5288#L12 assume !(main_~i~0 >= 10); 5287#L12-2 assume !(main_~i~0 <= 0); 5286#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5285#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5284#L12 assume !(main_~i~0 >= 10); 5283#L12-2 assume !(main_~i~0 <= 0); 5282#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5281#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5280#L12 assume !(main_~i~0 >= 10); 5279#L12-2 assume !(main_~i~0 <= 0); 5278#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5277#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5276#L12 assume !(main_~i~0 >= 10); 5275#L12-2 assume !(main_~i~0 <= 0); 5274#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5273#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5272#L12 assume !(main_~i~0 >= 10); 5271#L12-2 assume !(main_~i~0 <= 0); 5264#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5262#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5220#L12 assume !(main_~i~0 >= 10); 5221#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 5217#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 5218#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5213#L12 assume !(main_~i~0 >= 10); 5214#L12-2 assume !(main_~i~0 <= 0); 5209#L15-1 [2021-10-29 00:05:20,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:20,315 INFO L85 PathProgramCache]: Analyzing trace with hash -6653585, now seen corresponding path program 7 times [2021-10-29 00:05:20,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:20,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277720555] [2021-10-29 00:05:20,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:20,316 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:20,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:20,417 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 51 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:20,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:05:20,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277720555] [2021-10-29 00:05:20,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277720555] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:20,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637532816] [2021-10-29 00:05:20,418 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-29 00:05:20,418 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:20,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:20,420 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:05:20,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2021-10-29 00:05:20,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:20,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-29 00:05:20,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:20,738 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 51 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:20,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637532816] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:20,739 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-29 00:05:20,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-10-29 00:05:20,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735280168] [2021-10-29 00:05:20,740 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-29 00:05:20,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:20,740 INFO L85 PathProgramCache]: Analyzing trace with hash 711528023, now seen corresponding path program 8 times [2021-10-29 00:05:20,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:20,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928064704] [2021-10-29 00:05:20,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:20,741 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:20,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:20,856 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 60 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:20,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:05:20,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928064704] [2021-10-29 00:05:20,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928064704] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:20,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823351701] [2021-10-29 00:05:20,857 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-29 00:05:20,857 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:20,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:20,860 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:05:20,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2021-10-29 00:05:21,083 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-29 00:05:21,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 00:05:21,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-29 00:05:21,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:21,214 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 60 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:21,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823351701] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:21,214 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-29 00:05:21,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-10-29 00:05:21,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135261986] [2021-10-29 00:05:21,215 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-29 00:05:21,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:05:21,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-29 00:05:21,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-29 00:05:21,216 INFO L87 Difference]: Start difference. First operand 126 states and 152 transitions. cyclomatic complexity: 32 Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 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) [2021-10-29 00:05:21,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:21,286 INFO L93 Difference]: Finished difference Result 177 states and 214 transitions. [2021-10-29 00:05:21,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-29 00:05:21,287 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 177 states and 214 transitions. [2021-10-29 00:05:21,289 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 45 [2021-10-29 00:05:21,291 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 177 states to 175 states and 211 transitions. [2021-10-29 00:05:21,291 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 53 [2021-10-29 00:05:21,291 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53 [2021-10-29 00:05:21,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 175 states and 211 transitions. [2021-10-29 00:05:21,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-29 00:05:21,292 INFO L681 BuchiCegarLoop]: Abstraction has 175 states and 211 transitions. [2021-10-29 00:05:21,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states and 211 transitions. [2021-10-29 00:05:21,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 138. [2021-10-29 00:05:21,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 138 states have (on average 1.2028985507246377) internal successors, (166), 137 states have internal predecessors, (166), 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) [2021-10-29 00:05:21,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 166 transitions. [2021-10-29 00:05:21,299 INFO L704 BuchiCegarLoop]: Abstraction has 138 states and 166 transitions. [2021-10-29 00:05:21,299 INFO L587 BuchiCegarLoop]: Abstraction has 138 states and 166 transitions. [2021-10-29 00:05:21,299 INFO L425 BuchiCegarLoop]: ======== Iteration 18============ [2021-10-29 00:05:21,299 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 138 states and 166 transitions. [2021-10-29 00:05:21,300 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 44 [2021-10-29 00:05:21,301 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-29 00:05:21,301 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-29 00:05:21,304 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 9, 1, 1, 1, 1] [2021-10-29 00:05:21,304 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [11, 10, 10, 9, 2, 1, 1] [2021-10-29 00:05:21,304 INFO L791 eck$LassoCheckResult]: Stem: 5762#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; 5763#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5761#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 5867#L12-2 assume !(main_~i~0 <= 0); 5866#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5865#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5765#L12 assume !(main_~i~0 >= 10); 5766#L12-2 assume !(main_~i~0 <= 0); 5891#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5890#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5767#L12 assume !(main_~i~0 >= 10); 5768#L12-2 assume !(main_~i~0 <= 0); 5889#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5888#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5887#L12 assume !(main_~i~0 >= 10); 5886#L12-2 assume !(main_~i~0 <= 0); 5885#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5884#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5883#L12 assume !(main_~i~0 >= 10); 5882#L12-2 assume !(main_~i~0 <= 0); 5881#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5880#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5879#L12 assume !(main_~i~0 >= 10); 5878#L12-2 assume !(main_~i~0 <= 0); 5877#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5876#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5875#L12 assume !(main_~i~0 >= 10); 5874#L12-2 assume !(main_~i~0 <= 0); 5873#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5872#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5871#L12 assume !(main_~i~0 >= 10); 5870#L12-2 assume !(main_~i~0 <= 0); 5869#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5868#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5825#L12 assume !(main_~i~0 >= 10); 5864#L12-2 assume !(main_~i~0 <= 0); 5828#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5824#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5826#L12 assume !(main_~i~0 >= 10); 5783#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 5777#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 5778#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5773#L12 assume !(main_~i~0 >= 10); 5774#L12-2 assume !(main_~i~0 <= 0); 5769#L15-1 [2021-10-29 00:05:21,304 INFO L793 eck$LassoCheckResult]: Loop: 5769#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 5758#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5759#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 5754#L12-2 assume !(main_~i~0 <= 0); 5755#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5764#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5863#L12 assume !(main_~i~0 >= 10); 5862#L12-2 assume !(main_~i~0 <= 0); 5861#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5860#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5859#L12 assume !(main_~i~0 >= 10); 5858#L12-2 assume !(main_~i~0 <= 0); 5857#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5856#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5855#L12 assume !(main_~i~0 >= 10); 5854#L12-2 assume !(main_~i~0 <= 0); 5853#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5852#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5851#L12 assume !(main_~i~0 >= 10); 5850#L12-2 assume !(main_~i~0 <= 0); 5849#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5848#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5847#L12 assume !(main_~i~0 >= 10); 5846#L12-2 assume !(main_~i~0 <= 0); 5845#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5844#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5843#L12 assume !(main_~i~0 >= 10); 5842#L12-2 assume !(main_~i~0 <= 0); 5841#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5840#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5839#L12 assume !(main_~i~0 >= 10); 5838#L12-2 assume !(main_~i~0 <= 0); 5837#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5836#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5835#L12 assume !(main_~i~0 >= 10); 5834#L12-2 assume !(main_~i~0 <= 0); 5827#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5823#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5784#L12 assume !(main_~i~0 >= 10); 5785#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 5777#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 5778#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5773#L12 assume !(main_~i~0 >= 10); 5774#L12-2 assume !(main_~i~0 <= 0); 5769#L15-1 [2021-10-29 00:05:21,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:21,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1242347364, now seen corresponding path program 8 times [2021-10-29 00:05:21,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:21,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484451442] [2021-10-29 00:05:21,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:21,306 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:21,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:21,410 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 57 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:21,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:05:21,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484451442] [2021-10-29 00:05:21,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484451442] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:21,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028322441] [2021-10-29 00:05:21,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-29 00:05:21,413 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:21,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:21,418 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:05:21,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2021-10-29 00:05:21,635 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-29 00:05:21,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 00:05:21,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-29 00:05:21,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:21,806 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 57 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:21,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028322441] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:21,807 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-29 00:05:21,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2021-10-29 00:05:21,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950947716] [2021-10-29 00:05:21,807 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-29 00:05:21,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:21,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1875470260, now seen corresponding path program 9 times [2021-10-29 00:05:21,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:21,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254118326] [2021-10-29 00:05:21,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:21,808 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:21,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:21,931 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 67 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:21,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:05:21,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254118326] [2021-10-29 00:05:21,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254118326] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:21,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533389992] [2021-10-29 00:05:21,932 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-29 00:05:21,932 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:21,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:21,936 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:05:21,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2021-10-29 00:05:22,152 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-10-29 00:05:22,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 00:05:22,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-29 00:05:22,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:22,324 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 67 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:05:22,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533389992] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:22,324 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-29 00:05:22,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2021-10-29 00:05:22,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631687668] [2021-10-29 00:05:22,325 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-29 00:05:22,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:05:22,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-29 00:05:22,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-29 00:05:22,326 INFO L87 Difference]: Start difference. First operand 138 states and 166 transitions. cyclomatic complexity: 34 Second operand has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 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) [2021-10-29 00:05:22,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:22,452 INFO L93 Difference]: Finished difference Result 307 states and 361 transitions. [2021-10-29 00:05:22,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-29 00:05:22,452 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 307 states and 361 transitions. [2021-10-29 00:05:22,455 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 104 [2021-10-29 00:05:22,458 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 307 states to 299 states and 352 transitions. [2021-10-29 00:05:22,459 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 104 [2021-10-29 00:05:22,459 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 176 [2021-10-29 00:05:22,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 299 states and 352 transitions. [2021-10-29 00:05:22,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-29 00:05:22,460 INFO L681 BuchiCegarLoop]: Abstraction has 299 states and 352 transitions. [2021-10-29 00:05:22,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states and 352 transitions. [2021-10-29 00:05:22,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 214. [2021-10-29 00:05:22,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 214 states have (on average 1.205607476635514) internal successors, (258), 213 states have internal predecessors, (258), 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) [2021-10-29 00:05:22,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 258 transitions. [2021-10-29 00:05:22,468 INFO L704 BuchiCegarLoop]: Abstraction has 214 states and 258 transitions. [2021-10-29 00:05:22,468 INFO L587 BuchiCegarLoop]: Abstraction has 214 states and 258 transitions. [2021-10-29 00:05:22,468 INFO L425 BuchiCegarLoop]: ======== Iteration 19============ [2021-10-29 00:05:22,469 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 214 states and 258 transitions. [2021-10-29 00:05:22,471 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 80 [2021-10-29 00:05:22,471 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-29 00:05:22,471 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-29 00:05:22,474 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 10, 1, 1, 1] [2021-10-29 00:05:22,474 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [12, 11, 11, 10, 2, 1, 1] [2021-10-29 00:05:22,474 INFO L791 eck$LassoCheckResult]: Stem: 6486#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 6487#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6498#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 6559#L12-2 assume !(main_~i~0 <= 0); 6558#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6556#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6494#L12 assume !(main_~i~0 >= 10); 6495#L12-2 assume !(main_~i~0 <= 0); 6628#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6627#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6496#L12 assume !(main_~i~0 >= 10); 6497#L12-2 assume !(main_~i~0 <= 0); 6493#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6490#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6491#L12 assume !(main_~i~0 >= 10); 6626#L12-2 assume !(main_~i~0 <= 0); 6625#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6624#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6623#L12 assume !(main_~i~0 >= 10); 6622#L12-2 assume !(main_~i~0 <= 0); 6621#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6620#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6619#L12 assume !(main_~i~0 >= 10); 6618#L12-2 assume !(main_~i~0 <= 0); 6617#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6616#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6615#L12 assume !(main_~i~0 >= 10); 6614#L12-2 assume !(main_~i~0 <= 0); 6613#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6612#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6611#L12 assume !(main_~i~0 >= 10); 6610#L12-2 assume !(main_~i~0 <= 0); 6609#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6608#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6607#L12 assume !(main_~i~0 >= 10); 6606#L12-2 assume !(main_~i~0 <= 0); 6605#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6604#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6601#L12 assume !(main_~i~0 >= 10); 6603#L12-2 assume !(main_~i~0 <= 0); 6602#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6600#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6548#L12 assume !(main_~i~0 >= 10); 6549#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 6629#L15-1 [2021-10-29 00:05:22,475 INFO L793 eck$LassoCheckResult]: Loop: 6629#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 6488#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6489#L12 assume !(main_~i~0 >= 10); 6630#L12-2 assume !(main_~i~0 <= 0); 6595#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 6594#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6547#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 6482#L12-2 assume !(main_~i~0 <= 0); 6483#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6492#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6550#L12 assume !(main_~i~0 >= 10); 6551#L12-2 assume !(main_~i~0 <= 0); 6695#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6694#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6693#L12 assume !(main_~i~0 >= 10); 6692#L12-2 assume !(main_~i~0 <= 0); 6691#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6689#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6688#L12 assume !(main_~i~0 >= 10); 6687#L12-2 assume !(main_~i~0 <= 0); 6686#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6685#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6683#L12 assume !(main_~i~0 >= 10); 6681#L12-2 assume !(main_~i~0 <= 0); 6679#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6677#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6675#L12 assume !(main_~i~0 >= 10); 6673#L12-2 assume !(main_~i~0 <= 0); 6671#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6669#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6667#L12 assume !(main_~i~0 >= 10); 6665#L12-2 assume !(main_~i~0 <= 0); 6663#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6661#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6659#L12 assume !(main_~i~0 >= 10); 6657#L12-2 assume !(main_~i~0 <= 0); 6655#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6653#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6651#L12 assume !(main_~i~0 >= 10); 6649#L12-2 assume !(main_~i~0 <= 0); 6647#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6645#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6643#L12 assume !(main_~i~0 >= 10); 6641#L12-2 assume !(main_~i~0 <= 0); 6639#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6637#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6634#L12 assume !(main_~i~0 >= 10); 6635#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 6629#L15-1 [2021-10-29 00:05:22,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:22,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1244253986, now seen corresponding path program 2 times [2021-10-29 00:05:22,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:22,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139325694] [2021-10-29 00:05:22,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:22,476 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:22,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:22,496 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:05:22,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:22,509 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:05:22,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:22,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1107487295, now seen corresponding path program 10 times [2021-10-29 00:05:22,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:22,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675403026] [2021-10-29 00:05:22,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:22,510 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:22,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:22,523 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:05:22,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:22,536 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:05:22,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:22,537 INFO L85 PathProgramCache]: Analyzing trace with hash -429277470, now seen corresponding path program 9 times [2021-10-29 00:05:22,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:22,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076670273] [2021-10-29 00:05:22,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:22,539 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:22,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:22,609 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 587 proven. 3 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-29 00:05:22,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:05:22,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076670273] [2021-10-29 00:05:22,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076670273] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:22,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603488642] [2021-10-29 00:05:22,610 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-29 00:05:22,610 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:22,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:22,612 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:05:22,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2021-10-29 00:05:22,902 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2021-10-29 00:05:22,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 00:05:22,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-29 00:05:22,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:23,124 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 587 proven. 3 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-29 00:05:23,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603488642] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:23,125 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-29 00:05:23,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-10-29 00:05:23,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520809356] [2021-10-29 00:05:23,444 INFO L210 LassoAnalysis]: Preferences: [2021-10-29 00:05:23,444 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-29 00:05:23,444 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-29 00:05:23,444 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-29 00:05:23,444 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-29 00:05:23,444 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:23,445 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-29 00:05:23,445 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-29 00:05:23,445 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration19_Loop [2021-10-29 00:05:23,445 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-29 00:05:23,445 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-29 00:05:23,446 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:23,449 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:23,452 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:23,457 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:23,511 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-29 00:05:23,511 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-29 00:05:23,511 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:23,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:23,516 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:23,519 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-29 00:05:23,520 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:05:23,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Waiting until timeout for monitored process [2021-10-29 00:05:23,540 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-29 00:05:23,541 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: [] [2021-10-29 00:05:23,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:23,583 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:23,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:23,584 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:23,587 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-29 00:05:23,587 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:05:23,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Waiting until timeout for monitored process [2021-10-29 00:05:23,610 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-29 00:05:23,611 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_15=0} Honda state: {v_rep~unnamed0~0~false_15=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-29 00:05:23,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:23,652 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:23,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:23,653 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:23,655 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-29 00:05:23,656 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:05:23,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Waiting until timeout for monitored process [2021-10-29 00:05:23,684 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-29 00:05:23,684 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: [] [2021-10-29 00:05:23,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:23,720 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:23,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:23,721 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:23,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Waiting until timeout for monitored process [2021-10-29 00:05:23,722 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-29 00:05:23,723 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:05:23,755 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Ended with exit code 0 [2021-10-29 00:05:23,755 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:23,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:23,756 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:23,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Waiting until timeout for monitored process [2021-10-29 00:05:23,757 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-29 00:05:23,758 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:05:23,835 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-29 00:05:23,837 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Ended with exit code 0 [2021-10-29 00:05:23,838 INFO L210 LassoAnalysis]: Preferences: [2021-10-29 00:05:23,838 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-29 00:05:23,838 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-29 00:05:23,838 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-29 00:05:23,838 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-29 00:05:23,838 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:23,838 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-29 00:05:23,838 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-29 00:05:23,838 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration19_Loop [2021-10-29 00:05:23,838 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-29 00:05:23,838 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-29 00:05:23,839 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:23,841 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:23,845 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:23,851 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:23,897 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-29 00:05:23,897 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-29 00:05:23,897 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:23,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:23,898 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:23,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Waiting until timeout for monitored process [2021-10-29 00:05:23,900 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 [2021-10-29 00:05:23,908 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-29 00:05:23,908 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-29 00:05:23,908 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-29 00:05:23,908 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-29 00:05:23,910 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-29 00:05:23,910 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-29 00:05:23,916 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-29 00:05:23,940 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Ended with exit code 0 [2021-10-29 00:05:23,940 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:23,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:23,941 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:23,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (83)] Waiting until timeout for monitored process [2021-10-29 00:05:23,943 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 [2021-10-29 00:05:23,951 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-29 00:05:23,951 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-29 00:05:23,951 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-29 00:05:23,951 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-29 00:05:23,951 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-29 00:05:23,952 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-29 00:05:23,952 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-29 00:05:23,954 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-29 00:05:23,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (83)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:23,977 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:23,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:23,978 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:23,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (84)] Waiting until timeout for monitored process [2021-10-29 00:05:23,979 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 [2021-10-29 00:05:23,988 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-29 00:05:23,988 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-29 00:05:23,988 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-29 00:05:23,988 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-29 00:05:23,988 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-29 00:05:23,990 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-29 00:05:23,990 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-29 00:05:23,992 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-29 00:05:23,995 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-29 00:05:23,995 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-29 00:05:23,995 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:23,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:23,997 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:23,998 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-29 00:05:23,999 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-29 00:05:23,999 INFO L513 LassoAnalysis]: Proved termination. [2021-10-29 00:05:23,999 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-29 00:05:24,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (85)] Waiting until timeout for monitored process [2021-10-29 00:05:24,022 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (84)] Ended with exit code 0 [2021-10-29 00:05:24,023 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-29 00:05:24,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:24,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:24,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 00:05:24,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:24,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (85)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:24,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:24,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-29 00:05:24,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:24,411 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-29 00:05:24,412 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 [2021-10-29 00:05:24,412 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 214 states and 258 transitions. cyclomatic complexity: 49 Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 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) [2021-10-29 00:05:24,534 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 214 states and 258 transitions. cyclomatic complexity: 49. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 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) Result 493 states and 601 transitions. Complement of second has 15 states. [2021-10-29 00:05:24,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 1 stem states 6 non-accepting loop states 1 accepting loop states [2021-10-29 00:05:24,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 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) [2021-10-29 00:05:24,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 36 transitions. [2021-10-29 00:05:24,536 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 36 transitions. Stem has 44 letters. Loop has 48 letters. [2021-10-29 00:05:24,537 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:05:24,538 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 36 transitions. Stem has 92 letters. Loop has 48 letters. [2021-10-29 00:05:24,539 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:05:24,539 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 36 transitions. Stem has 44 letters. Loop has 96 letters. [2021-10-29 00:05:24,542 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:05:24,542 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 493 states and 601 transitions. [2021-10-29 00:05:24,552 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 84 [2021-10-29 00:05:24,556 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 493 states to 439 states and 521 transitions. [2021-10-29 00:05:24,556 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 178 [2021-10-29 00:05:24,558 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 183 [2021-10-29 00:05:24,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 439 states and 521 transitions. [2021-10-29 00:05:24,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-29 00:05:24,558 INFO L681 BuchiCegarLoop]: Abstraction has 439 states and 521 transitions. [2021-10-29 00:05:24,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states and 521 transitions. [2021-10-29 00:05:24,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 427. [2021-10-29 00:05:24,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 427 states have (on average 1.189695550351288) internal successors, (508), 426 states have internal predecessors, (508), 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) [2021-10-29 00:05:24,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 508 transitions. [2021-10-29 00:05:24,569 INFO L704 BuchiCegarLoop]: Abstraction has 427 states and 508 transitions. [2021-10-29 00:05:24,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:05:24,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 00:05:24,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-29 00:05:24,571 INFO L87 Difference]: Start difference. First operand 427 states and 508 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 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) [2021-10-29 00:05:24,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:24,595 INFO L93 Difference]: Finished difference Result 236 states and 278 transitions. [2021-10-29 00:05:24,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 00:05:24,595 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 236 states and 278 transitions. [2021-10-29 00:05:24,597 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2021-10-29 00:05:24,599 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 236 states to 221 states and 263 transitions. [2021-10-29 00:05:24,600 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 135 [2021-10-29 00:05:24,600 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 135 [2021-10-29 00:05:24,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 221 states and 263 transitions. [2021-10-29 00:05:24,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-29 00:05:24,601 INFO L681 BuchiCegarLoop]: Abstraction has 221 states and 263 transitions. [2021-10-29 00:05:24,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states and 263 transitions. [2021-10-29 00:05:24,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 214. [2021-10-29 00:05:24,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 214 states have (on average 1.1962616822429906) internal successors, (256), 213 states have internal predecessors, (256), 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) [2021-10-29 00:05:24,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 256 transitions. [2021-10-29 00:05:24,607 INFO L704 BuchiCegarLoop]: Abstraction has 214 states and 256 transitions. [2021-10-29 00:05:24,607 INFO L587 BuchiCegarLoop]: Abstraction has 214 states and 256 transitions. [2021-10-29 00:05:24,607 INFO L425 BuchiCegarLoop]: ======== Iteration 20============ [2021-10-29 00:05:24,608 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 214 states and 256 transitions. [2021-10-29 00:05:24,609 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 80 [2021-10-29 00:05:24,609 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-29 00:05:24,609 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-29 00:05:24,610 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 10, 1, 1, 1] [2021-10-29 00:05:24,610 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [13, 12, 12, 10, 3, 1, 1] [2021-10-29 00:05:24,611 INFO L791 eck$LassoCheckResult]: Stem: 8449#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 8450#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8462#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 8516#L12-2 assume !(main_~i~0 <= 0); 8515#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8514#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8512#L12 assume !(main_~i~0 >= 10); 8513#L12-2 assume !(main_~i~0 <= 0); 8595#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8594#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8460#L12 assume !(main_~i~0 >= 10); 8461#L12-2 assume !(main_~i~0 <= 0); 8522#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8520#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8521#L12 assume !(main_~i~0 >= 10); 8593#L12-2 assume !(main_~i~0 <= 0); 8592#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8591#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8590#L12 assume !(main_~i~0 >= 10); 8589#L12-2 assume !(main_~i~0 <= 0); 8588#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8587#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8586#L12 assume !(main_~i~0 >= 10); 8585#L12-2 assume !(main_~i~0 <= 0); 8584#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8583#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8582#L12 assume !(main_~i~0 >= 10); 8581#L12-2 assume !(main_~i~0 <= 0); 8580#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8579#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8578#L12 assume !(main_~i~0 >= 10); 8577#L12-2 assume !(main_~i~0 <= 0); 8576#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8575#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8574#L12 assume !(main_~i~0 >= 10); 8573#L12-2 assume !(main_~i~0 <= 0); 8572#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8571#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8568#L12 assume !(main_~i~0 >= 10); 8570#L12-2 assume !(main_~i~0 <= 0); 8569#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8567#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8458#L12 assume !(main_~i~0 >= 10); 8459#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 8596#L15-1 [2021-10-29 00:05:24,611 INFO L793 eck$LassoCheckResult]: Loop: 8596#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 8565#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8566#L12 assume !(main_~i~0 >= 10); 8445#L12-2 assume !(main_~i~0 <= 0); 8446#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 8451#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8452#L12 assume !(main_~i~0 >= 10); 8531#L12-2 assume !(main_~i~0 <= 0); 8529#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 8528#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8525#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 8526#L12-2 assume !(main_~i~0 <= 0); 8455#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8456#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8527#L12 assume !(main_~i~0 >= 10); 8523#L12-2 assume !(main_~i~0 <= 0); 8524#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8631#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8630#L12 assume !(main_~i~0 >= 10); 8629#L12-2 assume !(main_~i~0 <= 0); 8628#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8627#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8626#L12 assume !(main_~i~0 >= 10); 8625#L12-2 assume !(main_~i~0 <= 0); 8624#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8623#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8622#L12 assume !(main_~i~0 >= 10); 8621#L12-2 assume !(main_~i~0 <= 0); 8620#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8619#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8618#L12 assume !(main_~i~0 >= 10); 8617#L12-2 assume !(main_~i~0 <= 0); 8616#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8615#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8614#L12 assume !(main_~i~0 >= 10); 8613#L12-2 assume !(main_~i~0 <= 0); 8612#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8611#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8610#L12 assume !(main_~i~0 >= 10); 8609#L12-2 assume !(main_~i~0 <= 0); 8608#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8607#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8606#L12 assume !(main_~i~0 >= 10); 8605#L12-2 assume !(main_~i~0 <= 0); 8604#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8603#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8602#L12 assume !(main_~i~0 >= 10); 8601#L12-2 assume !(main_~i~0 <= 0); 8598#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8600#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8599#L12 assume !(main_~i~0 >= 10); 8597#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 8596#L15-1 [2021-10-29 00:05:24,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:24,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1244253986, now seen corresponding path program 3 times [2021-10-29 00:05:24,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:24,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23855327] [2021-10-29 00:05:24,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:24,612 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:24,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:24,625 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:05:24,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:24,633 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:05:24,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:24,634 INFO L85 PathProgramCache]: Analyzing trace with hash -2004957192, now seen corresponding path program 11 times [2021-10-29 00:05:24,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:24,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420280320] [2021-10-29 00:05:24,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:24,635 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:24,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:24,644 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:05:24,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:24,658 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:05:24,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:24,658 INFO L85 PathProgramCache]: Analyzing trace with hash -364906343, now seen corresponding path program 10 times [2021-10-29 00:05:24,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:24,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167948435] [2021-10-29 00:05:24,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:24,659 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:24,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:24,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 671 proven. 10 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-29 00:05:24,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:05:24,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167948435] [2021-10-29 00:05:24,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167948435] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:24,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662543089] [2021-10-29 00:05:24,723 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-29 00:05:24,723 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:24,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:24,726 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:05:24,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2021-10-29 00:05:25,040 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-29 00:05:25,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 00:05:25,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-29 00:05:25,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:25,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 671 proven. 10 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-29 00:05:25,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662543089] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:25,258 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-29 00:05:25,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-29 00:05:25,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426875872] [2021-10-29 00:05:25,551 INFO L210 LassoAnalysis]: Preferences: [2021-10-29 00:05:25,551 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-29 00:05:25,552 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-29 00:05:25,552 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-29 00:05:25,552 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-29 00:05:25,552 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:25,552 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-29 00:05:25,552 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-29 00:05:25,552 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration20_Loop [2021-10-29 00:05:25,552 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-29 00:05:25,552 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-29 00:05:25,553 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:25,557 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:25,562 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:25,566 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:25,609 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-29 00:05:25,610 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-29 00:05:25,610 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:25,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:25,611 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:25,616 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-29 00:05:25,616 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:05:25,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (87)] Waiting until timeout for monitored process [2021-10-29 00:05:25,632 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-29 00:05:25,632 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: [] [2021-10-29 00:05:25,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (87)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:25,653 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:25,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:25,654 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:25,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (88)] Waiting until timeout for monitored process [2021-10-29 00:05:25,677 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-29 00:05:25,677 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:05:25,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (88)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:25,709 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:25,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:25,710 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:25,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (89)] Waiting until timeout for monitored process [2021-10-29 00:05:25,711 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-29 00:05:25,712 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:05:25,750 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-29 00:05:25,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (89)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:25,779 INFO L210 LassoAnalysis]: Preferences: [2021-10-29 00:05:25,779 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-29 00:05:25,779 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-29 00:05:25,779 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-29 00:05:25,780 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-29 00:05:25,780 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:25,780 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-29 00:05:25,780 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-29 00:05:25,780 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration20_Loop [2021-10-29 00:05:25,780 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-29 00:05:25,780 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-29 00:05:25,781 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:25,787 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:25,790 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:25,792 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:25,838 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-29 00:05:25,838 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-29 00:05:25,839 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:25,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:25,839 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:25,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (90)] Waiting until timeout for monitored process [2021-10-29 00:05:25,841 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 [2021-10-29 00:05:25,849 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-29 00:05:25,849 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-29 00:05:25,849 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-29 00:05:25,849 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-29 00:05:25,849 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-29 00:05:25,850 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-29 00:05:25,850 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-29 00:05:25,852 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-29 00:05:25,854 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-29 00:05:25,855 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-29 00:05:25,855 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:25,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:25,856 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:25,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (91)] Waiting until timeout for monitored process [2021-10-29 00:05:25,857 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-29 00:05:25,857 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-29 00:05:25,857 INFO L513 LassoAnalysis]: Proved termination. [2021-10-29 00:05:25,857 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-29 00:05:25,880 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (90)] Ended with exit code 0 [2021-10-29 00:05:25,881 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-29 00:05:25,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:25,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:25,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 00:05:25,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:26,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:26,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-29 00:05:26,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:26,268 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 122 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-29 00:05:26,268 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 [2021-10-29 00:05:26,269 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 214 states and 256 transitions. cyclomatic complexity: 47 Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 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) [2021-10-29 00:05:26,447 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 214 states and 256 transitions. cyclomatic complexity: 47. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 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) Result 565 states and 685 transitions. Complement of second has 19 states. [2021-10-29 00:05:26,448 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 [2021-10-29 00:05:26,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 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) [2021-10-29 00:05:26,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 45 transitions. [2021-10-29 00:05:26,449 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 45 transitions. Stem has 44 letters. Loop has 52 letters. [2021-10-29 00:05:26,449 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:05:26,449 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 45 transitions. Stem has 96 letters. Loop has 52 letters. [2021-10-29 00:05:26,450 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:05:26,450 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 45 transitions. Stem has 44 letters. Loop has 104 letters. [2021-10-29 00:05:26,451 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:05:26,451 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 565 states and 685 transitions. [2021-10-29 00:05:26,456 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 84 [2021-10-29 00:05:26,460 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 565 states to 483 states and 571 transitions. [2021-10-29 00:05:26,460 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 182 [2021-10-29 00:05:26,461 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 188 [2021-10-29 00:05:26,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 483 states and 571 transitions. [2021-10-29 00:05:26,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-29 00:05:26,461 INFO L681 BuchiCegarLoop]: Abstraction has 483 states and 571 transitions. [2021-10-29 00:05:26,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states and 571 transitions. [2021-10-29 00:05:26,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 469. [2021-10-29 00:05:26,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 469 states have (on average 1.185501066098081) internal successors, (556), 468 states have internal predecessors, (556), 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) [2021-10-29 00:05:26,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 556 transitions. [2021-10-29 00:05:26,473 INFO L704 BuchiCegarLoop]: Abstraction has 469 states and 556 transitions. [2021-10-29 00:05:26,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:05:26,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 00:05:26,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-29 00:05:26,474 INFO L87 Difference]: Start difference. First operand 469 states and 556 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 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) [2021-10-29 00:05:26,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:26,507 INFO L93 Difference]: Finished difference Result 248 states and 288 transitions. [2021-10-29 00:05:26,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 00:05:26,508 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 248 states and 288 transitions. [2021-10-29 00:05:26,510 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2021-10-29 00:05:26,512 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 248 states to 225 states and 265 transitions. [2021-10-29 00:05:26,512 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 139 [2021-10-29 00:05:26,512 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 139 [2021-10-29 00:05:26,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 225 states and 265 transitions. [2021-10-29 00:05:26,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-29 00:05:26,513 INFO L681 BuchiCegarLoop]: Abstraction has 225 states and 265 transitions. [2021-10-29 00:05:26,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states and 265 transitions. [2021-10-29 00:05:26,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 214. [2021-10-29 00:05:26,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 214 states have (on average 1.1869158878504673) internal successors, (254), 213 states have internal predecessors, (254), 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) [2021-10-29 00:05:26,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 254 transitions. [2021-10-29 00:05:26,519 INFO L704 BuchiCegarLoop]: Abstraction has 214 states and 254 transitions. [2021-10-29 00:05:26,519 INFO L587 BuchiCegarLoop]: Abstraction has 214 states and 254 transitions. [2021-10-29 00:05:26,519 INFO L425 BuchiCegarLoop]: ======== Iteration 21============ [2021-10-29 00:05:26,519 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 214 states and 254 transitions. [2021-10-29 00:05:26,521 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 80 [2021-10-29 00:05:26,521 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-29 00:05:26,521 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-29 00:05:26,522 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 10, 1, 1, 1] [2021-10-29 00:05:26,522 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [14, 13, 13, 10, 4, 1, 1] [2021-10-29 00:05:26,523 INFO L791 eck$LassoCheckResult]: Stem: 10571#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 10572#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10583#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 10639#L12-2 assume !(main_~i~0 <= 0); 10638#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10637#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10633#L12 assume !(main_~i~0 >= 10); 10634#L12-2 assume !(main_~i~0 <= 0); 10716#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10715#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10581#L12 assume !(main_~i~0 >= 10); 10582#L12-2 assume !(main_~i~0 <= 0); 10643#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10635#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10636#L12 assume !(main_~i~0 >= 10); 10714#L12-2 assume !(main_~i~0 <= 0); 10713#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10712#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10711#L12 assume !(main_~i~0 >= 10); 10710#L12-2 assume !(main_~i~0 <= 0); 10709#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10708#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10707#L12 assume !(main_~i~0 >= 10); 10706#L12-2 assume !(main_~i~0 <= 0); 10705#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10704#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10703#L12 assume !(main_~i~0 >= 10); 10702#L12-2 assume !(main_~i~0 <= 0); 10701#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10700#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10699#L12 assume !(main_~i~0 >= 10); 10698#L12-2 assume !(main_~i~0 <= 0); 10697#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10696#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10695#L12 assume !(main_~i~0 >= 10); 10694#L12-2 assume !(main_~i~0 <= 0); 10693#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10692#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10689#L12 assume !(main_~i~0 >= 10); 10691#L12-2 assume !(main_~i~0 <= 0); 10690#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10687#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10688#L12 assume !(main_~i~0 >= 10); 10654#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 10719#L15-1 [2021-10-29 00:05:26,523 INFO L793 eck$LassoCheckResult]: Loop: 10719#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 10757#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10756#L12 assume !(main_~i~0 >= 10); 10721#L12-2 assume !(main_~i~0 <= 0); 10717#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 10686#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10580#L12 assume !(main_~i~0 >= 10); 10567#L12-2 assume !(main_~i~0 <= 0); 10568#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 10573#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10574#L12 assume !(main_~i~0 >= 10); 10651#L12-2 assume !(main_~i~0 <= 0); 10649#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 10648#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10645#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 10644#L12-2 assume !(main_~i~0 <= 0); 10577#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10578#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10646#L12 assume !(main_~i~0 >= 10); 10647#L12-2 assume !(main_~i~0 <= 0); 10755#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10754#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10753#L12 assume !(main_~i~0 >= 10); 10752#L12-2 assume !(main_~i~0 <= 0); 10751#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10750#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10749#L12 assume !(main_~i~0 >= 10); 10748#L12-2 assume !(main_~i~0 <= 0); 10747#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10746#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10745#L12 assume !(main_~i~0 >= 10); 10744#L12-2 assume !(main_~i~0 <= 0); 10743#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10742#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10741#L12 assume !(main_~i~0 >= 10); 10740#L12-2 assume !(main_~i~0 <= 0); 10739#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10738#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10737#L12 assume !(main_~i~0 >= 10); 10736#L12-2 assume !(main_~i~0 <= 0); 10735#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10734#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10733#L12 assume !(main_~i~0 >= 10); 10732#L12-2 assume !(main_~i~0 <= 0); 10731#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10730#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10729#L12 assume !(main_~i~0 >= 10); 10728#L12-2 assume !(main_~i~0 <= 0); 10727#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10726#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10725#L12 assume !(main_~i~0 >= 10); 10724#L12-2 assume !(main_~i~0 <= 0); 10720#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10723#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10722#L12 assume !(main_~i~0 >= 10); 10718#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 10719#L15-1 [2021-10-29 00:05:26,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:26,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1244253986, now seen corresponding path program 4 times [2021-10-29 00:05:26,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:26,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651498175] [2021-10-29 00:05:26,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:26,524 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:26,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:26,578 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:05:26,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:26,587 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:05:26,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:26,587 INFO L85 PathProgramCache]: Analyzing trace with hash -102857041, now seen corresponding path program 12 times [2021-10-29 00:05:26,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:26,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450085881] [2021-10-29 00:05:26,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:26,588 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:26,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:26,598 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:05:26,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:26,631 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:05:26,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:26,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1080327888, now seen corresponding path program 11 times [2021-10-29 00:05:26,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:26,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271110418] [2021-10-29 00:05:26,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:26,633 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:26,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (91)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:26,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:26,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 755 proven. 21 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-29 00:05:26,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:05:26,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271110418] [2021-10-29 00:05:26,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271110418] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:26,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873254347] [2021-10-29 00:05:26,738 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-29 00:05:26,739 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:26,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:26,755 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:05:26,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2021-10-29 00:05:27,199 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-10-29 00:05:27,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 00:05:27,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-29 00:05:27,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:27,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 755 proven. 21 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-29 00:05:27,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873254347] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:27,484 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-29 00:05:27,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-10-29 00:05:27,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710124729] [2021-10-29 00:05:27,858 INFO L210 LassoAnalysis]: Preferences: [2021-10-29 00:05:27,858 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-29 00:05:27,858 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-29 00:05:27,858 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-29 00:05:27,858 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-29 00:05:27,858 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:27,858 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-29 00:05:27,858 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-29 00:05:27,858 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration21_Loop [2021-10-29 00:05:27,858 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-29 00:05:27,859 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-29 00:05:27,859 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:27,869 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:27,874 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:27,876 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:27,916 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-29 00:05:27,916 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-29 00:05:27,917 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:27,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:27,924 INFO L229 MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:27,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (93)] Waiting until timeout for monitored process [2021-10-29 00:05:27,925 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-29 00:05:27,925 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:05:27,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (93)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:27,959 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:27,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:27,960 INFO L229 MonitoredProcess]: Starting monitored process 94 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:27,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (94)] Waiting until timeout for monitored process [2021-10-29 00:05:27,964 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-29 00:05:27,965 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:05:27,976 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-29 00:05:28,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (94)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:28,003 INFO L210 LassoAnalysis]: Preferences: [2021-10-29 00:05:28,003 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-29 00:05:28,003 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-29 00:05:28,003 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-29 00:05:28,004 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-29 00:05:28,004 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:28,004 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-29 00:05:28,004 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-29 00:05:28,004 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration21_Loop [2021-10-29 00:05:28,004 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-29 00:05:28,004 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-29 00:05:28,005 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:28,015 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:28,020 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:28,024 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:28,063 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-29 00:05:28,063 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-29 00:05:28,063 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:28,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:28,064 INFO L229 MonitoredProcess]: Starting monitored process 95 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:28,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (95)] Waiting until timeout for monitored process [2021-10-29 00:05:28,065 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 [2021-10-29 00:05:28,074 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-29 00:05:28,074 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-29 00:05:28,074 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-29 00:05:28,074 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-29 00:05:28,074 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-29 00:05:28,075 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-29 00:05:28,075 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-29 00:05:28,077 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-29 00:05:28,081 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-29 00:05:28,081 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-29 00:05:28,082 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:28,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:28,083 INFO L229 MonitoredProcess]: Starting monitored process 96 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:28,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (96)] Waiting until timeout for monitored process [2021-10-29 00:05:28,084 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-29 00:05:28,084 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-29 00:05:28,084 INFO L513 LassoAnalysis]: Proved termination. [2021-10-29 00:05:28,084 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-29 00:05:28,108 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (95)] Ended with exit code 0 [2021-10-29 00:05:28,108 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-29 00:05:28,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:28,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:28,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 00:05:28,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:28,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:28,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-29 00:05:28,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:28,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (96)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:28,557 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-29 00:05:28,557 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 [2021-10-29 00:05:28,558 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 214 states and 254 transitions. cyclomatic complexity: 45 Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 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) [2021-10-29 00:05:28,826 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 214 states and 254 transitions. cyclomatic complexity: 45. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 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) Result 653 states and 789 transitions. Complement of second has 23 states. [2021-10-29 00:05:28,826 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 [2021-10-29 00:05:28,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 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) [2021-10-29 00:05:28,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 54 transitions. [2021-10-29 00:05:28,827 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 54 transitions. Stem has 44 letters. Loop has 56 letters. [2021-10-29 00:05:28,828 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:05:28,828 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 54 transitions. Stem has 100 letters. Loop has 56 letters. [2021-10-29 00:05:28,829 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:05:28,829 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 54 transitions. Stem has 44 letters. Loop has 112 letters. [2021-10-29 00:05:28,831 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:05:28,831 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 653 states and 789 transitions. [2021-10-29 00:05:28,836 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 84 [2021-10-29 00:05:28,840 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 653 states to 535 states and 631 transitions. [2021-10-29 00:05:28,840 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 186 [2021-10-29 00:05:28,840 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 193 [2021-10-29 00:05:28,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 535 states and 631 transitions. [2021-10-29 00:05:28,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-29 00:05:28,841 INFO L681 BuchiCegarLoop]: Abstraction has 535 states and 631 transitions. [2021-10-29 00:05:28,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states and 631 transitions. [2021-10-29 00:05:28,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 519. [2021-10-29 00:05:28,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 519 states have (on average 1.1830443159922928) internal successors, (614), 518 states have internal predecessors, (614), 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) [2021-10-29 00:05:28,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 614 transitions. [2021-10-29 00:05:28,853 INFO L704 BuchiCegarLoop]: Abstraction has 519 states and 614 transitions. [2021-10-29 00:05:28,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:05:28,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 00:05:28,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-29 00:05:28,854 INFO L87 Difference]: Start difference. First operand 519 states and 614 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 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) [2021-10-29 00:05:28,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:28,887 INFO L93 Difference]: Finished difference Result 260 states and 298 transitions. [2021-10-29 00:05:28,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 00:05:28,888 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 260 states and 298 transitions. [2021-10-29 00:05:28,890 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2021-10-29 00:05:28,892 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 260 states to 229 states and 267 transitions. [2021-10-29 00:05:28,892 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 143 [2021-10-29 00:05:28,893 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 143 [2021-10-29 00:05:28,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 229 states and 267 transitions. [2021-10-29 00:05:28,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-29 00:05:28,893 INFO L681 BuchiCegarLoop]: Abstraction has 229 states and 267 transitions. [2021-10-29 00:05:28,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states and 267 transitions. [2021-10-29 00:05:28,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 214. [2021-10-29 00:05:28,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 214 states have (on average 1.1775700934579438) internal successors, (252), 213 states have internal predecessors, (252), 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) [2021-10-29 00:05:28,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 252 transitions. [2021-10-29 00:05:28,899 INFO L704 BuchiCegarLoop]: Abstraction has 214 states and 252 transitions. [2021-10-29 00:05:28,900 INFO L587 BuchiCegarLoop]: Abstraction has 214 states and 252 transitions. [2021-10-29 00:05:28,900 INFO L425 BuchiCegarLoop]: ======== Iteration 22============ [2021-10-29 00:05:28,900 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 214 states and 252 transitions. [2021-10-29 00:05:28,901 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 80 [2021-10-29 00:05:28,902 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-29 00:05:28,902 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-29 00:05:28,903 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 10, 1, 1, 1] [2021-10-29 00:05:28,903 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [15, 14, 14, 10, 5, 1, 1] [2021-10-29 00:05:28,903 INFO L791 eck$LassoCheckResult]: Stem: 12880#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; 12881#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 12888#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 12894#L12-2 assume !(main_~i~0 <= 0); 12893#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 12892#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 12890#L12 assume !(main_~i~0 >= 10); 12891#L12-2 assume !(main_~i~0 <= 0); 12900#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 12901#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 12885#L12 assume !(main_~i~0 >= 10); 12886#L12-2 assume !(main_~i~0 <= 0); 12902#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 12898#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 12899#L12 assume !(main_~i~0 >= 10); 13050#L12-2 assume !(main_~i~0 <= 0); 13049#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 13048#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13047#L12 assume !(main_~i~0 >= 10); 13046#L12-2 assume !(main_~i~0 <= 0); 13045#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 13044#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13043#L12 assume !(main_~i~0 >= 10); 13042#L12-2 assume !(main_~i~0 <= 0); 13041#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 13040#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13039#L12 assume !(main_~i~0 >= 10); 13038#L12-2 assume !(main_~i~0 <= 0); 13037#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 13036#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13035#L12 assume !(main_~i~0 >= 10); 13034#L12-2 assume !(main_~i~0 <= 0); 13033#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 13032#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13031#L12 assume !(main_~i~0 >= 10); 13030#L12-2 assume !(main_~i~0 <= 0); 13029#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 13028#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13024#L12 assume !(main_~i~0 >= 10); 13027#L12-2 assume !(main_~i~0 <= 0); 13026#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 13023#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 12884#L12 assume !(main_~i~0 >= 10); 12872#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 12873#L15-1 [2021-10-29 00:05:28,903 INFO L793 eck$LassoCheckResult]: Loop: 12873#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 12876#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 12877#L12 assume !(main_~i~0 >= 10); 12987#L12-2 assume !(main_~i~0 <= 0); 12986#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 12985#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 12984#L12 assume !(main_~i~0 >= 10); 12983#L12-2 assume !(main_~i~0 <= 0); 12982#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 12981#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 12980#L12 assume !(main_~i~0 >= 10); 12961#L12-2 assume !(main_~i~0 <= 0); 12960#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 12958#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 12959#L12 assume !(main_~i~0 >= 10); 12962#L12-2 assume !(main_~i~0 <= 0); 12954#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 12953#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 12950#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 12951#L12-2 assume !(main_~i~0 <= 0); 13025#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 13022#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 12952#L12 assume !(main_~i~0 >= 10); 12949#L12-2 assume !(main_~i~0 <= 0); 12882#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 12883#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13021#L12 assume !(main_~i~0 >= 10); 13020#L12-2 assume !(main_~i~0 <= 0); 13019#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 13018#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13017#L12 assume !(main_~i~0 >= 10); 13016#L12-2 assume !(main_~i~0 <= 0); 13015#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 13014#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13013#L12 assume !(main_~i~0 >= 10); 13012#L12-2 assume !(main_~i~0 <= 0); 13011#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 13010#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13009#L12 assume !(main_~i~0 >= 10); 13008#L12-2 assume !(main_~i~0 <= 0); 13007#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 13006#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13005#L12 assume !(main_~i~0 >= 10); 13004#L12-2 assume !(main_~i~0 <= 0); 13003#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 13002#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13001#L12 assume !(main_~i~0 >= 10); 13000#L12-2 assume !(main_~i~0 <= 0); 12999#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 12998#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 12997#L12 assume !(main_~i~0 >= 10); 12996#L12-2 assume !(main_~i~0 <= 0); 12995#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 12994#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 12993#L12 assume !(main_~i~0 >= 10); 12992#L12-2 assume !(main_~i~0 <= 0); 12989#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 12991#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 12990#L12 assume !(main_~i~0 >= 10); 12988#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 12873#L15-1 [2021-10-29 00:05:28,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:28,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1244253986, now seen corresponding path program 5 times [2021-10-29 00:05:28,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:28,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448498938] [2021-10-29 00:05:28,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:28,905 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:28,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:28,914 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:05:28,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:28,921 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:05:28,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:28,922 INFO L85 PathProgramCache]: Analyzing trace with hash 591532518, now seen corresponding path program 13 times [2021-10-29 00:05:28,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:28,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390132784] [2021-10-29 00:05:28,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:28,923 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:28,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:28,933 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:05:28,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:28,942 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:05:28,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:28,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1205670279, now seen corresponding path program 12 times [2021-10-29 00:05:28,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:28,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476562316] [2021-10-29 00:05:28,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:28,944 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:28,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:29,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 839 proven. 36 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-29 00:05:29,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:05:29,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476562316] [2021-10-29 00:05:29,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476562316] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:29,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743715803] [2021-10-29 00:05:29,046 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-29 00:05:29,046 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:29,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:29,060 INFO L229 MonitoredProcess]: Starting monitored process 97 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:05:29,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2021-10-29 00:05:29,587 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 26 check-sat command(s) [2021-10-29 00:05:29,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 00:05:29,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-29 00:05:29,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:29,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 839 proven. 36 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-29 00:05:29,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743715803] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:29,848 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-29 00:05:29,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-10-29 00:05:29,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929850432] [2021-10-29 00:05:30,294 INFO L210 LassoAnalysis]: Preferences: [2021-10-29 00:05:30,294 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-29 00:05:30,294 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-29 00:05:30,294 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-29 00:05:30,294 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-29 00:05:30,294 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:30,295 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-29 00:05:30,295 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-29 00:05:30,295 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration22_Loop [2021-10-29 00:05:30,295 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-29 00:05:30,295 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-29 00:05:30,295 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:30,298 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:30,305 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:30,309 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:30,339 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-29 00:05:30,339 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-29 00:05:30,340 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:30,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:30,340 INFO L229 MonitoredProcess]: Starting monitored process 98 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:30,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (98)] Waiting until timeout for monitored process [2021-10-29 00:05:30,342 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-29 00:05:30,342 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:05:30,355 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-29 00:05:30,355 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: [] [2021-10-29 00:05:30,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (98)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:30,377 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:30,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:30,378 INFO L229 MonitoredProcess]: Starting monitored process 99 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:30,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (99)] Waiting until timeout for monitored process [2021-10-29 00:05:30,379 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-29 00:05:30,380 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:05:30,412 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (99)] Ended with exit code 0 [2021-10-29 00:05:30,413 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:30,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:30,423 INFO L229 MonitoredProcess]: Starting monitored process 100 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:30,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (100)] Waiting until timeout for monitored process [2021-10-29 00:05:30,424 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-29 00:05:30,424 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:05:30,435 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-29 00:05:30,456 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (100)] Ended with exit code 0 [2021-10-29 00:05:30,456 INFO L210 LassoAnalysis]: Preferences: [2021-10-29 00:05:30,456 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-29 00:05:30,456 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-29 00:05:30,456 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-29 00:05:30,456 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-29 00:05:30,456 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:30,456 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-29 00:05:30,457 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-29 00:05:30,457 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration22_Loop [2021-10-29 00:05:30,457 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-29 00:05:30,457 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-29 00:05:30,457 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:30,459 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:30,464 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:30,476 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:30,516 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-29 00:05:30,517 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-29 00:05:30,517 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:30,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:30,518 INFO L229 MonitoredProcess]: Starting monitored process 101 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:30,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (101)] Waiting until timeout for monitored process [2021-10-29 00:05:30,519 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 [2021-10-29 00:05:30,528 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-29 00:05:30,528 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-29 00:05:30,528 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-29 00:05:30,528 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-29 00:05:30,530 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-29 00:05:30,530 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-29 00:05:30,552 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-29 00:05:30,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (101)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:30,575 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:30,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:30,576 INFO L229 MonitoredProcess]: Starting monitored process 102 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:30,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (102)] Waiting until timeout for monitored process [2021-10-29 00:05:30,577 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 [2021-10-29 00:05:30,586 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-29 00:05:30,586 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-29 00:05:30,586 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-29 00:05:30,586 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-29 00:05:30,588 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-29 00:05:30,588 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-29 00:05:30,614 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-29 00:05:30,636 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (102)] Ended with exit code 0 [2021-10-29 00:05:30,637 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:30,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:30,637 INFO L229 MonitoredProcess]: Starting monitored process 103 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:30,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (103)] Waiting until timeout for monitored process [2021-10-29 00:05:30,639 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 [2021-10-29 00:05:30,646 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-29 00:05:30,646 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-29 00:05:30,646 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-29 00:05:30,646 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-29 00:05:30,646 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-29 00:05:30,647 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-29 00:05:30,647 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-29 00:05:30,648 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-29 00:05:30,650 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-29 00:05:30,650 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-29 00:05:30,651 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:30,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:30,652 INFO L229 MonitoredProcess]: Starting monitored process 104 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:30,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (104)] Waiting until timeout for monitored process [2021-10-29 00:05:30,653 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-29 00:05:30,653 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-29 00:05:30,653 INFO L513 LassoAnalysis]: Proved termination. [2021-10-29 00:05:30,653 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-29 00:05:30,675 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (103)] Ended with exit code 0 [2021-10-29 00:05:30,676 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-29 00:05:30,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:30,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:30,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 00:05:30,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:30,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (104)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:30,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:30,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-29 00:05:30,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:31,103 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 230 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-29 00:05:31,103 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 [2021-10-29 00:05:31,103 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 214 states and 252 transitions. cyclomatic complexity: 43 Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 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) [2021-10-29 00:05:31,363 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 214 states and 252 transitions. cyclomatic complexity: 43. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 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) Result 757 states and 913 transitions. Complement of second has 27 states. [2021-10-29 00:05:31,364 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 [2021-10-29 00:05:31,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 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) [2021-10-29 00:05:31,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 63 transitions. [2021-10-29 00:05:31,366 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 63 transitions. Stem has 44 letters. Loop has 60 letters. [2021-10-29 00:05:31,368 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:05:31,368 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 63 transitions. Stem has 104 letters. Loop has 60 letters. [2021-10-29 00:05:31,369 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:05:31,369 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 63 transitions. Stem has 44 letters. Loop has 120 letters. [2021-10-29 00:05:31,370 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:05:31,371 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 757 states and 913 transitions. [2021-10-29 00:05:31,378 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 84 [2021-10-29 00:05:31,383 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 757 states to 595 states and 701 transitions. [2021-10-29 00:05:31,383 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 190 [2021-10-29 00:05:31,384 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 198 [2021-10-29 00:05:31,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 595 states and 701 transitions. [2021-10-29 00:05:31,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-29 00:05:31,387 INFO L681 BuchiCegarLoop]: Abstraction has 595 states and 701 transitions. [2021-10-29 00:05:31,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states and 701 transitions. [2021-10-29 00:05:31,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 577. [2021-10-29 00:05:31,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 577 states have (on average 1.1819757365684576) internal successors, (682), 576 states have internal predecessors, (682), 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) [2021-10-29 00:05:31,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 682 transitions. [2021-10-29 00:05:31,403 INFO L704 BuchiCegarLoop]: Abstraction has 577 states and 682 transitions. [2021-10-29 00:05:31,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:05:31,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 00:05:31,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-29 00:05:31,404 INFO L87 Difference]: Start difference. First operand 577 states and 682 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 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) [2021-10-29 00:05:31,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:31,449 INFO L93 Difference]: Finished difference Result 272 states and 308 transitions. [2021-10-29 00:05:31,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 00:05:31,449 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 272 states and 308 transitions. [2021-10-29 00:05:31,452 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2021-10-29 00:05:31,454 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 272 states to 233 states and 269 transitions. [2021-10-29 00:05:31,454 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 147 [2021-10-29 00:05:31,455 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 147 [2021-10-29 00:05:31,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 233 states and 269 transitions. [2021-10-29 00:05:31,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-29 00:05:31,458 INFO L681 BuchiCegarLoop]: Abstraction has 233 states and 269 transitions. [2021-10-29 00:05:31,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states and 269 transitions. [2021-10-29 00:05:31,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 214. [2021-10-29 00:05:31,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 214 states have (on average 1.1682242990654206) internal successors, (250), 213 states have internal predecessors, (250), 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) [2021-10-29 00:05:31,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 250 transitions. [2021-10-29 00:05:31,465 INFO L704 BuchiCegarLoop]: Abstraction has 214 states and 250 transitions. [2021-10-29 00:05:31,465 INFO L587 BuchiCegarLoop]: Abstraction has 214 states and 250 transitions. [2021-10-29 00:05:31,465 INFO L425 BuchiCegarLoop]: ======== Iteration 23============ [2021-10-29 00:05:31,465 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 214 states and 250 transitions. [2021-10-29 00:05:31,467 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 80 [2021-10-29 00:05:31,467 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-29 00:05:31,467 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-29 00:05:31,468 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 10, 1, 1, 1] [2021-10-29 00:05:31,468 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [16, 15, 15, 10, 6, 1, 1] [2021-10-29 00:05:31,469 INFO L791 eck$LassoCheckResult]: Stem: 15392#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; 15393#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15400#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 15407#L12-2 assume !(main_~i~0 <= 0); 15406#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15405#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15403#L12 assume !(main_~i~0 >= 10); 15404#L12-2 assume !(main_~i~0 <= 0); 15566#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15564#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15398#L12 assume !(main_~i~0 >= 10); 15399#L12-2 assume !(main_~i~0 <= 0); 15413#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15411#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15412#L12 assume !(main_~i~0 >= 10); 15561#L12-2 assume !(main_~i~0 <= 0); 15559#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15557#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15555#L12 assume !(main_~i~0 >= 10); 15553#L12-2 assume !(main_~i~0 <= 0); 15551#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15549#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15547#L12 assume !(main_~i~0 >= 10); 15545#L12-2 assume !(main_~i~0 <= 0); 15543#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15541#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15539#L12 assume !(main_~i~0 >= 10); 15537#L12-2 assume !(main_~i~0 <= 0); 15535#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15533#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15531#L12 assume !(main_~i~0 >= 10); 15529#L12-2 assume !(main_~i~0 <= 0); 15527#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15525#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15523#L12 assume !(main_~i~0 >= 10); 15521#L12-2 assume !(main_~i~0 <= 0); 15519#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15517#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15508#L12 assume !(main_~i~0 >= 10); 15514#L12-2 assume !(main_~i~0 <= 0); 15511#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15507#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15500#L12 assume !(main_~i~0 >= 10); 15384#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 15385#L15-1 [2021-10-29 00:05:31,469 INFO L793 eck$LassoCheckResult]: Loop: 15385#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 15388#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15389#L12 assume !(main_~i~0 >= 10); 15397#L12-2 assume !(main_~i~0 <= 0); 15497#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 15496#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15495#L12 assume !(main_~i~0 >= 10); 15494#L12-2 assume !(main_~i~0 <= 0); 15493#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 15492#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15491#L12 assume !(main_~i~0 >= 10); 15490#L12-2 assume !(main_~i~0 <= 0); 15489#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 15488#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15487#L12 assume !(main_~i~0 >= 10); 15472#L12-2 assume !(main_~i~0 <= 0); 15473#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 15469#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15467#L12 assume !(main_~i~0 >= 10); 15468#L12-2 assume !(main_~i~0 <= 0); 15465#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 15464#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15461#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 15462#L12-2 assume !(main_~i~0 <= 0); 15569#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15568#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15463#L12 assume !(main_~i~0 >= 10); 15460#L12-2 assume !(main_~i~0 <= 0); 15394#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15395#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15567#L12 assume !(main_~i~0 >= 10); 15565#L12-2 assume !(main_~i~0 <= 0); 15563#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15562#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15560#L12 assume !(main_~i~0 >= 10); 15558#L12-2 assume !(main_~i~0 <= 0); 15556#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15554#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15552#L12 assume !(main_~i~0 >= 10); 15550#L12-2 assume !(main_~i~0 <= 0); 15548#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15546#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15544#L12 assume !(main_~i~0 >= 10); 15542#L12-2 assume !(main_~i~0 <= 0); 15540#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15538#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15536#L12 assume !(main_~i~0 >= 10); 15534#L12-2 assume !(main_~i~0 <= 0); 15532#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15530#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15528#L12 assume !(main_~i~0 >= 10); 15526#L12-2 assume !(main_~i~0 <= 0); 15524#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15522#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15520#L12 assume !(main_~i~0 >= 10); 15518#L12-2 assume !(main_~i~0 <= 0); 15516#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15515#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15512#L12 assume !(main_~i~0 >= 10); 15509#L12-2 assume !(main_~i~0 <= 0); 15499#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15505#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15503#L12 assume !(main_~i~0 >= 10); 15498#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 15385#L15-1 [2021-10-29 00:05:31,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:31,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1244253986, now seen corresponding path program 6 times [2021-10-29 00:05:31,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:31,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139159285] [2021-10-29 00:05:31,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:31,471 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:31,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:31,497 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:05:31,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:31,507 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:05:31,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:31,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1930483299, now seen corresponding path program 14 times [2021-10-29 00:05:31,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:31,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676777912] [2021-10-29 00:05:31,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:31,510 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:31,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:31,521 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:05:31,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:31,556 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:05:31,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:31,557 INFO L85 PathProgramCache]: Analyzing trace with hash -422612802, now seen corresponding path program 13 times [2021-10-29 00:05:31,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:31,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090686907] [2021-10-29 00:05:31,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:31,558 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:31,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:31,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 923 proven. 55 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-29 00:05:31,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:05:31,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090686907] [2021-10-29 00:05:31,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090686907] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:31,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589308056] [2021-10-29 00:05:31,642 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-29 00:05:31,643 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:31,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:31,643 INFO L229 MonitoredProcess]: Starting monitored process 105 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:05:31,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2021-10-29 00:05:32,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:32,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-29 00:05:32,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:32,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 923 proven. 55 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-29 00:05:32,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589308056] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:32,340 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-29 00:05:32,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-10-29 00:05:32,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188172709] [2021-10-29 00:05:32,714 INFO L210 LassoAnalysis]: Preferences: [2021-10-29 00:05:32,714 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-29 00:05:32,714 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-29 00:05:32,714 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-29 00:05:32,714 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-29 00:05:32,715 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:32,715 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-29 00:05:32,715 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-29 00:05:32,715 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration23_Loop [2021-10-29 00:05:32,715 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-29 00:05:32,715 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-29 00:05:32,716 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:32,719 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:32,726 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:32,732 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:32,775 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-29 00:05:32,775 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-29 00:05:32,775 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:32,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:32,778 INFO L229 MonitoredProcess]: Starting monitored process 106 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:32,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (106)] Waiting until timeout for monitored process [2021-10-29 00:05:32,780 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-29 00:05:32,780 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:05:32,796 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-29 00:05:32,796 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_23=1} Honda state: {v_rep~unnamed0~0~true_23=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-29 00:05:32,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (106)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:32,820 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:32,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:32,821 INFO L229 MonitoredProcess]: Starting monitored process 107 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:32,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (107)] Waiting until timeout for monitored process [2021-10-29 00:05:32,836 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-29 00:05:32,836 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:05:32,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (107)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:32,869 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:32,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:32,870 INFO L229 MonitoredProcess]: Starting monitored process 108 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:32,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (108)] Waiting until timeout for monitored process [2021-10-29 00:05:32,872 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-29 00:05:32,872 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:05:32,896 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-29 00:05:32,920 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (108)] Ended with exit code 0 [2021-10-29 00:05:32,920 INFO L210 LassoAnalysis]: Preferences: [2021-10-29 00:05:32,920 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-29 00:05:32,920 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-29 00:05:32,920 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-29 00:05:32,920 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-29 00:05:32,920 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:32,920 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-29 00:05:32,921 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-29 00:05:32,921 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration23_Loop [2021-10-29 00:05:32,921 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-29 00:05:32,921 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-29 00:05:32,921 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:32,924 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:32,930 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:32,934 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:32,977 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-29 00:05:32,977 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-29 00:05:32,977 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:32,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:32,978 INFO L229 MonitoredProcess]: Starting monitored process 109 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:32,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (109)] Waiting until timeout for monitored process [2021-10-29 00:05:32,979 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 [2021-10-29 00:05:32,987 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-29 00:05:32,987 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-29 00:05:32,987 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-29 00:05:32,987 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-29 00:05:32,990 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-29 00:05:32,990 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-29 00:05:32,993 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-29 00:05:33,016 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (109)] Ended with exit code 0 [2021-10-29 00:05:33,016 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:33,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:33,017 INFO L229 MonitoredProcess]: Starting monitored process 110 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:33,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (110)] Waiting until timeout for monitored process [2021-10-29 00:05:33,018 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 [2021-10-29 00:05:33,027 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-29 00:05:33,027 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-29 00:05:33,027 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-29 00:05:33,027 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-29 00:05:33,027 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-29 00:05:33,028 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-29 00:05:33,028 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-29 00:05:33,030 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-29 00:05:33,032 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-29 00:05:33,032 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-29 00:05:33,032 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:33,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:33,034 INFO L229 MonitoredProcess]: Starting monitored process 111 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:33,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (111)] Waiting until timeout for monitored process [2021-10-29 00:05:33,035 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-29 00:05:33,035 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-29 00:05:33,035 INFO L513 LassoAnalysis]: Proved termination. [2021-10-29 00:05:33,035 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-29 00:05:33,059 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (110)] Ended with exit code 0 [2021-10-29 00:05:33,059 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-29 00:05:33,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:33,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:33,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 00:05:33,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:33,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:33,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-29 00:05:33,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:33,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (111)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:33,522 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-29 00:05:33,522 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 [2021-10-29 00:05:33,523 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 214 states and 250 transitions. cyclomatic complexity: 41 Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 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) [2021-10-29 00:05:33,901 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 214 states and 250 transitions. cyclomatic complexity: 41. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 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) Result 877 states and 1057 transitions. Complement of second has 31 states. [2021-10-29 00:05:33,901 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 [2021-10-29 00:05:33,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 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) [2021-10-29 00:05:33,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 72 transitions. [2021-10-29 00:05:33,902 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 72 transitions. Stem has 44 letters. Loop has 64 letters. [2021-10-29 00:05:33,903 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:05:33,903 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 72 transitions. Stem has 108 letters. Loop has 64 letters. [2021-10-29 00:05:33,903 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:05:33,903 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 72 transitions. Stem has 44 letters. Loop has 128 letters. [2021-10-29 00:05:33,904 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:05:33,905 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 877 states and 1057 transitions. [2021-10-29 00:05:33,911 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 84 [2021-10-29 00:05:33,917 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 877 states to 663 states and 781 transitions. [2021-10-29 00:05:33,917 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 194 [2021-10-29 00:05:33,917 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 203 [2021-10-29 00:05:33,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 663 states and 781 transitions. [2021-10-29 00:05:33,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-29 00:05:33,918 INFO L681 BuchiCegarLoop]: Abstraction has 663 states and 781 transitions. [2021-10-29 00:05:33,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states and 781 transitions. [2021-10-29 00:05:33,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 643. [2021-10-29 00:05:33,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 643 states have (on average 1.181959564541213) internal successors, (760), 642 states have internal predecessors, (760), 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) [2021-10-29 00:05:33,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 760 transitions. [2021-10-29 00:05:33,932 INFO L704 BuchiCegarLoop]: Abstraction has 643 states and 760 transitions. [2021-10-29 00:05:33,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:05:33,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-29 00:05:33,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-29 00:05:33,933 INFO L87 Difference]: Start difference. First operand 643 states and 760 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 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) [2021-10-29 00:05:33,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:33,996 INFO L93 Difference]: Finished difference Result 284 states and 318 transitions. [2021-10-29 00:05:33,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-29 00:05:33,997 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 284 states and 318 transitions. [2021-10-29 00:05:33,999 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2021-10-29 00:05:34,001 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 284 states to 237 states and 271 transitions. [2021-10-29 00:05:34,001 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 151 [2021-10-29 00:05:34,002 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 151 [2021-10-29 00:05:34,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 237 states and 271 transitions. [2021-10-29 00:05:34,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-29 00:05:34,002 INFO L681 BuchiCegarLoop]: Abstraction has 237 states and 271 transitions. [2021-10-29 00:05:34,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states and 271 transitions. [2021-10-29 00:05:34,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 214. [2021-10-29 00:05:34,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 214 states have (on average 1.158878504672897) internal successors, (248), 213 states have internal predecessors, (248), 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) [2021-10-29 00:05:34,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 248 transitions. [2021-10-29 00:05:34,008 INFO L704 BuchiCegarLoop]: Abstraction has 214 states and 248 transitions. [2021-10-29 00:05:34,008 INFO L587 BuchiCegarLoop]: Abstraction has 214 states and 248 transitions. [2021-10-29 00:05:34,009 INFO L425 BuchiCegarLoop]: ======== Iteration 24============ [2021-10-29 00:05:34,009 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 214 states and 248 transitions. [2021-10-29 00:05:34,010 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 80 [2021-10-29 00:05:34,010 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-29 00:05:34,011 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-29 00:05:34,012 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 10, 1, 1, 1] [2021-10-29 00:05:34,012 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [17, 16, 16, 10, 7, 1, 1] [2021-10-29 00:05:34,012 INFO L791 eck$LassoCheckResult]: Stem: 18135#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; 18136#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18142#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 18149#L12-2 assume !(main_~i~0 <= 0); 18148#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18147#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18145#L12 assume !(main_~i~0 >= 10); 18146#L12-2 assume !(main_~i~0 <= 0); 18154#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18153#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18140#L12 assume !(main_~i~0 >= 10); 18141#L12-2 assume !(main_~i~0 <= 0); 18335#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18333#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18331#L12 assume !(main_~i~0 >= 10); 18329#L12-2 assume !(main_~i~0 <= 0); 18327#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18325#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18323#L12 assume !(main_~i~0 >= 10); 18321#L12-2 assume !(main_~i~0 <= 0); 18319#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18317#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18315#L12 assume !(main_~i~0 >= 10); 18313#L12-2 assume !(main_~i~0 <= 0); 18311#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18309#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18307#L12 assume !(main_~i~0 >= 10); 18305#L12-2 assume !(main_~i~0 <= 0); 18303#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18301#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18299#L12 assume !(main_~i~0 >= 10); 18297#L12-2 assume !(main_~i~0 <= 0); 18295#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18293#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18291#L12 assume !(main_~i~0 >= 10); 18289#L12-2 assume !(main_~i~0 <= 0); 18287#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18285#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18279#L12 assume !(main_~i~0 >= 10); 18283#L12-2 assume !(main_~i~0 <= 0); 18281#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18278#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18139#L12 assume !(main_~i~0 >= 10); 18127#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 18128#L15-1 [2021-10-29 00:05:34,012 INFO L793 eck$LassoCheckResult]: Loop: 18128#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 18131#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18132#L12 assume !(main_~i~0 >= 10); 18239#L12-2 assume !(main_~i~0 <= 0); 18238#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 18237#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18236#L12 assume !(main_~i~0 >= 10); 18235#L12-2 assume !(main_~i~0 <= 0); 18234#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 18233#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18232#L12 assume !(main_~i~0 >= 10); 18231#L12-2 assume !(main_~i~0 <= 0); 18230#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 18229#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18228#L12 assume !(main_~i~0 >= 10); 18227#L12-2 assume !(main_~i~0 <= 0); 18226#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 18225#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18224#L12 assume !(main_~i~0 >= 10); 18213#L12-2 assume !(main_~i~0 <= 0); 18214#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 18210#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18208#L12 assume !(main_~i~0 >= 10); 18209#L12-2 assume !(main_~i~0 <= 0); 18206#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 18205#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18202#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 18203#L12-2 assume !(main_~i~0 <= 0); 18275#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18274#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18204#L12 assume !(main_~i~0 >= 10); 18201#L12-2 assume !(main_~i~0 <= 0); 18137#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18138#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18273#L12 assume !(main_~i~0 >= 10); 18272#L12-2 assume !(main_~i~0 <= 0); 18271#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18270#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18269#L12 assume !(main_~i~0 >= 10); 18268#L12-2 assume !(main_~i~0 <= 0); 18267#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18266#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18265#L12 assume !(main_~i~0 >= 10); 18264#L12-2 assume !(main_~i~0 <= 0); 18263#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18262#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18261#L12 assume !(main_~i~0 >= 10); 18260#L12-2 assume !(main_~i~0 <= 0); 18259#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18258#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18257#L12 assume !(main_~i~0 >= 10); 18256#L12-2 assume !(main_~i~0 <= 0); 18255#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18254#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18253#L12 assume !(main_~i~0 >= 10); 18252#L12-2 assume !(main_~i~0 <= 0); 18251#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18250#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18249#L12 assume !(main_~i~0 >= 10); 18248#L12-2 assume !(main_~i~0 <= 0); 18247#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18246#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18245#L12 assume !(main_~i~0 >= 10); 18244#L12-2 assume !(main_~i~0 <= 0); 18241#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18243#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18242#L12 assume !(main_~i~0 >= 10); 18240#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 18128#L15-1 [2021-10-29 00:05:34,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:34,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1244253986, now seen corresponding path program 7 times [2021-10-29 00:05:34,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:34,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951596516] [2021-10-29 00:05:34,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:34,014 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:34,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:34,031 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:05:34,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:34,038 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:05:34,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:34,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1504997932, now seen corresponding path program 15 times [2021-10-29 00:05:34,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:34,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741669387] [2021-10-29 00:05:34,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:34,039 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:34,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:34,052 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:05:34,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:34,062 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:05:34,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:34,063 INFO L85 PathProgramCache]: Analyzing trace with hash -92185483, now seen corresponding path program 14 times [2021-10-29 00:05:34,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:34,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384420969] [2021-10-29 00:05:34,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:34,063 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:34,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:34,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 1007 proven. 78 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-29 00:05:34,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:05:34,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384420969] [2021-10-29 00:05:34,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384420969] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:34,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324867367] [2021-10-29 00:05:34,165 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-29 00:05:34,165 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:34,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:34,166 INFO L229 MonitoredProcess]: Starting monitored process 112 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:05:34,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2021-10-29 00:05:34,972 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-29 00:05:34,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 00:05:34,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-29 00:05:34,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:35,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 1007 proven. 78 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-29 00:05:35,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324867367] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:35,295 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-29 00:05:35,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-10-29 00:05:35,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121257778] [2021-10-29 00:05:35,841 INFO L210 LassoAnalysis]: Preferences: [2021-10-29 00:05:35,841 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-29 00:05:35,841 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-29 00:05:35,842 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-29 00:05:35,842 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-29 00:05:35,842 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:35,842 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-29 00:05:35,842 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-29 00:05:35,842 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration24_Loop [2021-10-29 00:05:35,842 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-29 00:05:35,842 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-29 00:05:35,843 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:35,852 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:35,858 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:35,861 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:35,909 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-29 00:05:35,910 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-29 00:05:35,910 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:35,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:35,915 INFO L229 MonitoredProcess]: Starting monitored process 113 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:35,919 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-29 00:05:35,919 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:05:35,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (113)] Waiting until timeout for monitored process [2021-10-29 00:05:35,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (113)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:35,981 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:35,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:35,987 INFO L229 MonitoredProcess]: Starting monitored process 114 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:35,989 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-29 00:05:35,989 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:05:36,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (114)] Waiting until timeout for monitored process [2021-10-29 00:05:36,014 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-29 00:05:36,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (114)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:36,056 INFO L210 LassoAnalysis]: Preferences: [2021-10-29 00:05:36,056 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-29 00:05:36,056 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-29 00:05:36,056 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-29 00:05:36,056 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-29 00:05:36,056 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:36,056 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-29 00:05:36,056 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-29 00:05:36,057 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration24_Loop [2021-10-29 00:05:36,057 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-29 00:05:36,057 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-29 00:05:36,058 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:36,061 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:36,070 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:36,076 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:36,127 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-29 00:05:36,127 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-29 00:05:36,127 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:36,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:36,129 INFO L229 MonitoredProcess]: Starting monitored process 115 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:36,131 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 [2021-10-29 00:05:36,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (115)] Waiting until timeout for monitored process [2021-10-29 00:05:36,140 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-29 00:05:36,141 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-29 00:05:36,141 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-29 00:05:36,141 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-29 00:05:36,142 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-29 00:05:36,143 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-29 00:05:36,155 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-29 00:05:36,188 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (115)] Ended with exit code 0 [2021-10-29 00:05:36,188 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:36,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:36,189 INFO L229 MonitoredProcess]: Starting monitored process 116 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:36,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (116)] Waiting until timeout for monitored process [2021-10-29 00:05:36,191 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 [2021-10-29 00:05:36,200 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-29 00:05:36,200 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-29 00:05:36,200 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-29 00:05:36,200 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-29 00:05:36,200 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-29 00:05:36,201 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-29 00:05:36,201 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-29 00:05:36,203 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-29 00:05:36,205 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-29 00:05:36,205 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-29 00:05:36,205 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:36,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:36,207 INFO L229 MonitoredProcess]: Starting monitored process 117 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:36,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (117)] Waiting until timeout for monitored process [2021-10-29 00:05:36,208 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-29 00:05:36,208 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-29 00:05:36,208 INFO L513 LassoAnalysis]: Proved termination. [2021-10-29 00:05:36,209 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-29 00:05:36,233 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (116)] Ended with exit code 0 [2021-10-29 00:05:36,233 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-29 00:05:36,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:36,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:36,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 00:05:36,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:36,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:36,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-29 00:05:36,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:36,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (117)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:36,732 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-29 00:05:36,732 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 [2021-10-29 00:05:36,733 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 214 states and 248 transitions. cyclomatic complexity: 39 Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 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) [2021-10-29 00:05:37,177 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 214 states and 248 transitions. cyclomatic complexity: 39. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 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) Result 1013 states and 1221 transitions. Complement of second has 35 states. [2021-10-29 00:05:37,177 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 [2021-10-29 00:05:37,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 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) [2021-10-29 00:05:37,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 81 transitions. [2021-10-29 00:05:37,178 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 18 states and 81 transitions. Stem has 44 letters. Loop has 68 letters. [2021-10-29 00:05:37,179 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:05:37,179 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 18 states and 81 transitions. Stem has 112 letters. Loop has 68 letters. [2021-10-29 00:05:37,179 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:05:37,179 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 18 states and 81 transitions. Stem has 44 letters. Loop has 136 letters. [2021-10-29 00:05:37,181 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:05:37,181 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1013 states and 1221 transitions. [2021-10-29 00:05:37,187 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 84 [2021-10-29 00:05:37,192 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1013 states to 739 states and 871 transitions. [2021-10-29 00:05:37,192 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 198 [2021-10-29 00:05:37,192 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 208 [2021-10-29 00:05:37,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 739 states and 871 transitions. [2021-10-29 00:05:37,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-29 00:05:37,193 INFO L681 BuchiCegarLoop]: Abstraction has 739 states and 871 transitions. [2021-10-29 00:05:37,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states and 871 transitions. [2021-10-29 00:05:37,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 717. [2021-10-29 00:05:37,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 717 states have (on average 1.1827057182705718) internal successors, (848), 716 states have internal predecessors, (848), 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) [2021-10-29 00:05:37,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 848 transitions. [2021-10-29 00:05:37,206 INFO L704 BuchiCegarLoop]: Abstraction has 717 states and 848 transitions. [2021-10-29 00:05:37,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:05:37,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-29 00:05:37,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-29 00:05:37,207 INFO L87 Difference]: Start difference. First operand 717 states and 848 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 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) [2021-10-29 00:05:37,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:37,259 INFO L93 Difference]: Finished difference Result 296 states and 328 transitions. [2021-10-29 00:05:37,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-29 00:05:37,260 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 296 states and 328 transitions. [2021-10-29 00:05:37,262 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2021-10-29 00:05:37,263 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 296 states to 241 states and 273 transitions. [2021-10-29 00:05:37,264 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 155 [2021-10-29 00:05:37,264 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 155 [2021-10-29 00:05:37,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 241 states and 273 transitions. [2021-10-29 00:05:37,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-29 00:05:37,264 INFO L681 BuchiCegarLoop]: Abstraction has 241 states and 273 transitions. [2021-10-29 00:05:37,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states and 273 transitions. [2021-10-29 00:05:37,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 214. [2021-10-29 00:05:37,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 214 states have (on average 1.1495327102803738) internal successors, (246), 213 states have internal predecessors, (246), 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) [2021-10-29 00:05:37,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 246 transitions. [2021-10-29 00:05:37,277 INFO L704 BuchiCegarLoop]: Abstraction has 214 states and 246 transitions. [2021-10-29 00:05:37,277 INFO L587 BuchiCegarLoop]: Abstraction has 214 states and 246 transitions. [2021-10-29 00:05:37,277 INFO L425 BuchiCegarLoop]: ======== Iteration 25============ [2021-10-29 00:05:37,277 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 214 states and 246 transitions. [2021-10-29 00:05:37,279 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 80 [2021-10-29 00:05:37,279 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-29 00:05:37,279 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-29 00:05:37,280 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 10, 1, 1, 1] [2021-10-29 00:05:37,280 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [18, 17, 17, 10, 8, 1, 1] [2021-10-29 00:05:37,280 INFO L791 eck$LassoCheckResult]: Stem: 21133#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; 21134#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21140#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 21149#L12-2 assume !(main_~i~0 <= 0); 21148#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21147#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21143#L12 assume !(main_~i~0 >= 10); 21144#L12-2 assume !(main_~i~0 <= 0); 21297#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21296#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21138#L12 assume !(main_~i~0 >= 10); 21139#L12-2 assume !(main_~i~0 <= 0); 21153#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21145#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21146#L12 assume !(main_~i~0 >= 10); 21293#L12-2 assume !(main_~i~0 <= 0); 21291#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21289#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21287#L12 assume !(main_~i~0 >= 10); 21285#L12-2 assume !(main_~i~0 <= 0); 21283#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21281#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21279#L12 assume !(main_~i~0 >= 10); 21277#L12-2 assume !(main_~i~0 <= 0); 21275#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21273#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21271#L12 assume !(main_~i~0 >= 10); 21269#L12-2 assume !(main_~i~0 <= 0); 21267#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21265#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21263#L12 assume !(main_~i~0 >= 10); 21261#L12-2 assume !(main_~i~0 <= 0); 21259#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21257#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21255#L12 assume !(main_~i~0 >= 10); 21253#L12-2 assume !(main_~i~0 <= 0); 21251#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21249#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21241#L12 assume !(main_~i~0 >= 10); 21246#L12-2 assume !(main_~i~0 <= 0); 21243#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21240#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21203#L12 assume !(main_~i~0 >= 10); 21201#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 21200#L15-1 [2021-10-29 00:05:37,280 INFO L793 eck$LassoCheckResult]: Loop: 21200#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 21129#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21130#L12 assume !(main_~i~0 >= 10); 21137#L12-2 assume !(main_~i~0 <= 0); 21202#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 21338#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21337#L12 assume !(main_~i~0 >= 10); 21336#L12-2 assume !(main_~i~0 <= 0); 21335#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 21334#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21333#L12 assume !(main_~i~0 >= 10); 21332#L12-2 assume !(main_~i~0 <= 0); 21331#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 21330#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21329#L12 assume !(main_~i~0 >= 10); 21328#L12-2 assume !(main_~i~0 <= 0); 21327#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 21326#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21325#L12 assume !(main_~i~0 >= 10); 21324#L12-2 assume !(main_~i~0 <= 0); 21323#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 21322#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21321#L12 assume !(main_~i~0 >= 10); 21314#L12-2 assume !(main_~i~0 <= 0); 21312#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 21313#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21320#L12 assume !(main_~i~0 >= 10); 21315#L12-2 assume !(main_~i~0 <= 0); 21307#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 21306#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21303#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 21125#L12-2 assume !(main_~i~0 <= 0); 21126#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21135#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21304#L12 assume !(main_~i~0 >= 10); 21305#L12-2 assume !(main_~i~0 <= 0); 21302#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21301#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21300#L12 assume !(main_~i~0 >= 10); 21299#L12-2 assume !(main_~i~0 <= 0); 21298#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21295#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21294#L12 assume !(main_~i~0 >= 10); 21292#L12-2 assume !(main_~i~0 <= 0); 21290#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21288#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21286#L12 assume !(main_~i~0 >= 10); 21284#L12-2 assume !(main_~i~0 <= 0); 21282#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21280#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21278#L12 assume !(main_~i~0 >= 10); 21276#L12-2 assume !(main_~i~0 <= 0); 21274#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21272#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21270#L12 assume !(main_~i~0 >= 10); 21268#L12-2 assume !(main_~i~0 <= 0); 21266#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21264#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21262#L12 assume !(main_~i~0 >= 10); 21260#L12-2 assume !(main_~i~0 <= 0); 21258#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21256#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21254#L12 assume !(main_~i~0 >= 10); 21252#L12-2 assume !(main_~i~0 <= 0); 21250#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21248#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21247#L12 assume !(main_~i~0 >= 10); 21244#L12-2 assume !(main_~i~0 <= 0); 21242#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21238#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21239#L12 assume !(main_~i~0 >= 10); 21245#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 21200#L15-1 [2021-10-29 00:05:37,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:37,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1244253986, now seen corresponding path program 8 times [2021-10-29 00:05:37,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:37,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69257304] [2021-10-29 00:05:37,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:37,283 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:37,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:37,294 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:05:37,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:37,300 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:05:37,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:37,301 INFO L85 PathProgramCache]: Analyzing trace with hash 903675531, now seen corresponding path program 16 times [2021-10-29 00:05:37,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:37,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643846934] [2021-10-29 00:05:37,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:37,302 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:37,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:37,349 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:05:37,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:37,359 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:05:37,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:37,360 INFO L85 PathProgramCache]: Analyzing trace with hash -950496084, now seen corresponding path program 15 times [2021-10-29 00:05:37,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:37,360 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805452235] [2021-10-29 00:05:37,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:37,361 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:37,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:37,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 1091 proven. 105 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-29 00:05:37,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:05:37,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805452235] [2021-10-29 00:05:37,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805452235] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:37,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593426904] [2021-10-29 00:05:37,460 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-29 00:05:37,460 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:37,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:37,463 INFO L229 MonitoredProcess]: Starting monitored process 118 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:05:37,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2021-10-29 00:05:38,099 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 25 check-sat command(s) [2021-10-29 00:05:38,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 00:05:38,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-29 00:05:38,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:38,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 1091 proven. 105 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-29 00:05:38,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593426904] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:38,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-29 00:05:38,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-10-29 00:05:38,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045972419] [2021-10-29 00:05:38,835 INFO L210 LassoAnalysis]: Preferences: [2021-10-29 00:05:38,835 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-29 00:05:38,835 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-29 00:05:38,836 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-29 00:05:38,836 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-29 00:05:38,836 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:38,836 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-29 00:05:38,836 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-29 00:05:38,836 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration25_Loop [2021-10-29 00:05:38,836 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-29 00:05:38,836 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-29 00:05:38,837 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:38,839 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:38,844 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:38,847 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:38,881 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-29 00:05:38,881 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-29 00:05:38,881 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:38,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:38,882 INFO L229 MonitoredProcess]: Starting monitored process 119 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:38,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (119)] Waiting until timeout for monitored process [2021-10-29 00:05:38,883 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-29 00:05:38,884 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:05:38,896 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-29 00:05:38,896 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: [] [2021-10-29 00:05:38,917 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (119)] Ended with exit code 0 [2021-10-29 00:05:38,917 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:38,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:38,918 INFO L229 MonitoredProcess]: Starting monitored process 120 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:38,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (120)] Waiting until timeout for monitored process [2021-10-29 00:05:38,930 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-29 00:05:38,930 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:05:38,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (120)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:38,957 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:38,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:38,958 INFO L229 MonitoredProcess]: Starting monitored process 121 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:38,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (121)] Waiting until timeout for monitored process [2021-10-29 00:05:38,959 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-29 00:05:38,959 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:05:38,968 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-29 00:05:38,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (121)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:38,988 INFO L210 LassoAnalysis]: Preferences: [2021-10-29 00:05:38,988 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-29 00:05:38,988 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-29 00:05:38,988 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-29 00:05:38,988 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-29 00:05:38,988 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:38,988 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-29 00:05:38,988 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-29 00:05:38,988 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration25_Loop [2021-10-29 00:05:38,988 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-29 00:05:38,988 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-29 00:05:38,989 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:38,996 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:39,001 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:39,005 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:39,041 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-29 00:05:39,041 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-29 00:05:39,041 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:39,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:39,042 INFO L229 MonitoredProcess]: Starting monitored process 122 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:39,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (122)] Waiting until timeout for monitored process [2021-10-29 00:05:39,043 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 [2021-10-29 00:05:39,050 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-29 00:05:39,051 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-29 00:05:39,051 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-29 00:05:39,051 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-29 00:05:39,052 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-29 00:05:39,052 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-29 00:05:39,055 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-29 00:05:39,078 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (122)] Ended with exit code 0 [2021-10-29 00:05:39,078 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:39,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:39,079 INFO L229 MonitoredProcess]: Starting monitored process 123 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:39,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (123)] Waiting until timeout for monitored process [2021-10-29 00:05:39,081 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 [2021-10-29 00:05:39,089 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-29 00:05:39,089 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-29 00:05:39,090 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-29 00:05:39,090 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-29 00:05:39,090 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-29 00:05:39,090 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-29 00:05:39,091 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-29 00:05:39,093 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-29 00:05:39,095 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-29 00:05:39,095 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-29 00:05:39,095 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:39,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:39,096 INFO L229 MonitoredProcess]: Starting monitored process 124 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:39,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (124)] Waiting until timeout for monitored process [2021-10-29 00:05:39,097 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-29 00:05:39,098 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-29 00:05:39,098 INFO L513 LassoAnalysis]: Proved termination. [2021-10-29 00:05:39,098 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-29 00:05:39,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (123)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:39,122 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-29 00:05:39,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:39,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:39,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 00:05:39,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:39,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:39,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-29 00:05:39,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:39,596 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 422 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-29 00:05:39,597 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 [2021-10-29 00:05:39,598 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 214 states and 246 transitions. cyclomatic complexity: 37 Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 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) [2021-10-29 00:05:40,057 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 214 states and 246 transitions. cyclomatic complexity: 37. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 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 1165 states and 1405 transitions. Complement of second has 39 states. [2021-10-29 00:05:40,058 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 [2021-10-29 00:05:40,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 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) [2021-10-29 00:05:40,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 90 transitions. [2021-10-29 00:05:40,059 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 90 transitions. Stem has 44 letters. Loop has 72 letters. [2021-10-29 00:05:40,060 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:05:40,060 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 90 transitions. Stem has 116 letters. Loop has 72 letters. [2021-10-29 00:05:40,061 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:05:40,061 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 90 transitions. Stem has 44 letters. Loop has 144 letters. [2021-10-29 00:05:40,064 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:05:40,064 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1165 states and 1405 transitions. [2021-10-29 00:05:40,075 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 84 [2021-10-29 00:05:40,081 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1165 states to 823 states and 971 transitions. [2021-10-29 00:05:40,082 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 202 [2021-10-29 00:05:40,082 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 213 [2021-10-29 00:05:40,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 823 states and 971 transitions. [2021-10-29 00:05:40,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-29 00:05:40,083 INFO L681 BuchiCegarLoop]: Abstraction has 823 states and 971 transitions. [2021-10-29 00:05:40,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states and 971 transitions. [2021-10-29 00:05:40,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 799. [2021-10-29 00:05:40,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 799 states have (on average 1.183979974968711) internal successors, (946), 798 states have internal predecessors, (946), 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) [2021-10-29 00:05:40,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 946 transitions. [2021-10-29 00:05:40,102 INFO L704 BuchiCegarLoop]: Abstraction has 799 states and 946 transitions. [2021-10-29 00:05:40,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:05:40,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-29 00:05:40,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-29 00:05:40,104 INFO L87 Difference]: Start difference. First operand 799 states and 946 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 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) [2021-10-29 00:05:40,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:40,156 INFO L93 Difference]: Finished difference Result 308 states and 338 transitions. [2021-10-29 00:05:40,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-29 00:05:40,156 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 308 states and 338 transitions. [2021-10-29 00:05:40,159 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2021-10-29 00:05:40,160 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 308 states to 245 states and 275 transitions. [2021-10-29 00:05:40,161 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 159 [2021-10-29 00:05:40,161 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 159 [2021-10-29 00:05:40,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 245 states and 275 transitions. [2021-10-29 00:05:40,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-29 00:05:40,161 INFO L681 BuchiCegarLoop]: Abstraction has 245 states and 275 transitions. [2021-10-29 00:05:40,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states and 275 transitions. [2021-10-29 00:05:40,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 214. [2021-10-29 00:05:40,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 214 states have (on average 1.1401869158878504) internal successors, (244), 213 states have internal predecessors, (244), 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) [2021-10-29 00:05:40,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 244 transitions. [2021-10-29 00:05:40,167 INFO L704 BuchiCegarLoop]: Abstraction has 214 states and 244 transitions. [2021-10-29 00:05:40,167 INFO L587 BuchiCegarLoop]: Abstraction has 214 states and 244 transitions. [2021-10-29 00:05:40,168 INFO L425 BuchiCegarLoop]: ======== Iteration 26============ [2021-10-29 00:05:40,168 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 214 states and 244 transitions. [2021-10-29 00:05:40,169 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 80 [2021-10-29 00:05:40,169 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-29 00:05:40,169 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-29 00:05:40,170 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 10, 1, 1, 1] [2021-10-29 00:05:40,170 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [19, 18, 18, 10, 9, 1, 1] [2021-10-29 00:05:40,171 INFO L791 eck$LassoCheckResult]: Stem: 24406#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 24407#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24417#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 24470#L12-2 assume !(main_~i~0 <= 0); 24469#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24468#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24466#L12 assume !(main_~i~0 >= 10); 24467#L12-2 assume !(main_~i~0 <= 0); 24475#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24474#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24415#L12 assume !(main_~i~0 >= 10); 24416#L12-2 assume !(main_~i~0 <= 0); 24574#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24572#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24570#L12 assume !(main_~i~0 >= 10); 24568#L12-2 assume !(main_~i~0 <= 0); 24566#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24564#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24562#L12 assume !(main_~i~0 >= 10); 24560#L12-2 assume !(main_~i~0 <= 0); 24558#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24556#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24554#L12 assume !(main_~i~0 >= 10); 24552#L12-2 assume !(main_~i~0 <= 0); 24550#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24548#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24546#L12 assume !(main_~i~0 >= 10); 24544#L12-2 assume !(main_~i~0 <= 0); 24542#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24540#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24538#L12 assume !(main_~i~0 >= 10); 24536#L12-2 assume !(main_~i~0 <= 0); 24534#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24532#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24530#L12 assume !(main_~i~0 >= 10); 24528#L12-2 assume !(main_~i~0 <= 0); 24526#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24524#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24515#L12 assume !(main_~i~0 >= 10); 24520#L12-2 assume !(main_~i~0 <= 0); 24518#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24514#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24479#L12 assume !(main_~i~0 >= 10); 24477#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 24476#L15-1 [2021-10-29 00:05:40,171 INFO L793 eck$LassoCheckResult]: Loop: 24476#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 24408#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24409#L12 assume !(main_~i~0 >= 10); 24414#L12-2 assume !(main_~i~0 <= 0); 24478#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 24615#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24614#L12 assume !(main_~i~0 >= 10); 24613#L12-2 assume !(main_~i~0 <= 0); 24612#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 24611#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24610#L12 assume !(main_~i~0 >= 10); 24609#L12-2 assume !(main_~i~0 <= 0); 24608#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 24607#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24606#L12 assume !(main_~i~0 >= 10); 24605#L12-2 assume !(main_~i~0 <= 0); 24604#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 24603#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24602#L12 assume !(main_~i~0 >= 10); 24601#L12-2 assume !(main_~i~0 <= 0); 24600#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 24599#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24598#L12 assume !(main_~i~0 >= 10); 24597#L12-2 assume !(main_~i~0 <= 0); 24596#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 24595#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24594#L12 assume !(main_~i~0 >= 10); 24590#L12-2 assume !(main_~i~0 <= 0); 24589#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 24588#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24586#L12 assume !(main_~i~0 >= 10); 24587#L12-2 assume !(main_~i~0 <= 0); 24584#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 24583#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24582#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 24402#L12-2 assume !(main_~i~0 <= 0); 24403#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24412#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24581#L12 assume !(main_~i~0 >= 10); 24580#L12-2 assume !(main_~i~0 <= 0); 24579#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24578#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24577#L12 assume !(main_~i~0 >= 10); 24576#L12-2 assume !(main_~i~0 <= 0); 24575#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24573#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24571#L12 assume !(main_~i~0 >= 10); 24569#L12-2 assume !(main_~i~0 <= 0); 24567#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24565#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24563#L12 assume !(main_~i~0 >= 10); 24561#L12-2 assume !(main_~i~0 <= 0); 24559#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24557#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24555#L12 assume !(main_~i~0 >= 10); 24553#L12-2 assume !(main_~i~0 <= 0); 24551#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24549#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24547#L12 assume !(main_~i~0 >= 10); 24545#L12-2 assume !(main_~i~0 <= 0); 24543#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24541#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24539#L12 assume !(main_~i~0 >= 10); 24537#L12-2 assume !(main_~i~0 <= 0); 24535#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24533#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24531#L12 assume !(main_~i~0 >= 10); 24529#L12-2 assume !(main_~i~0 <= 0); 24527#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24525#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24523#L12 assume !(main_~i~0 >= 10); 24522#L12-2 assume !(main_~i~0 <= 0); 24519#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24516#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24517#L12 assume !(main_~i~0 >= 10); 24521#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 24476#L15-1 [2021-10-29 00:05:40,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:40,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1244253986, now seen corresponding path program 9 times [2021-10-29 00:05:40,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:40,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006056868] [2021-10-29 00:05:40,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:40,172 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:40,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:40,194 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:05:40,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:40,199 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:05:40,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:40,200 INFO L85 PathProgramCache]: Analyzing trace with hash -917947454, now seen corresponding path program 17 times [2021-10-29 00:05:40,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:40,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942998459] [2021-10-29 00:05:40,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:40,201 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:40,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:40,226 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:05:40,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:40,236 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:05:40,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:40,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1759172963, now seen corresponding path program 16 times [2021-10-29 00:05:40,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:40,243 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841440546] [2021-10-29 00:05:40,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:40,244 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:40,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:40,262 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (124)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:40,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 1175 proven. 136 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-29 00:05:40,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-29 00:05:40,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841440546] [2021-10-29 00:05:40,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841440546] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:40,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196530831] [2021-10-29 00:05:40,368 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-29 00:05:40,368 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 00:05:40,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:40,371 INFO L229 MonitoredProcess]: Starting monitored process 125 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 00:05:40,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2021-10-29 00:05:41,108 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-29 00:05:41,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 00:05:41,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-29 00:05:41,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:41,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 1175 proven. 136 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-29 00:05:41,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196530831] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 00:05:41,423 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-29 00:05:41,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2021-10-29 00:05:41,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821285750] [2021-10-29 00:05:41,870 INFO L210 LassoAnalysis]: Preferences: [2021-10-29 00:05:41,871 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-29 00:05:41,871 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-29 00:05:41,871 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-29 00:05:41,871 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-29 00:05:41,871 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:41,871 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-29 00:05:41,871 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-29 00:05:41,871 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration26_Loop [2021-10-29 00:05:41,871 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-29 00:05:41,871 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-29 00:05:41,872 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:41,874 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:41,881 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:41,885 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:41,922 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-29 00:05:41,922 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-29 00:05:41,922 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:41,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:41,923 INFO L229 MonitoredProcess]: Starting monitored process 126 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:41,925 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-29 00:05:41,925 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:05:41,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (126)] Waiting until timeout for monitored process [2021-10-29 00:05:41,954 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-29 00:05:41,955 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_29=1} Honda state: {v_rep~unnamed0~0~true_29=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-29 00:05:41,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (126)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:41,996 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:41,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:41,997 INFO L229 MonitoredProcess]: Starting monitored process 127 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:42,003 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-29 00:05:42,003 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:05:42,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (127)] Waiting until timeout for monitored process [2021-10-29 00:05:42,037 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (127)] Ended with exit code 0 [2021-10-29 00:05:42,037 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:42,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:42,038 INFO L229 MonitoredProcess]: Starting monitored process 128 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:42,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (128)] Waiting until timeout for monitored process [2021-10-29 00:05:42,042 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-29 00:05:42,042 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-29 00:05:42,052 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-29 00:05:42,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (128)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:42,072 INFO L210 LassoAnalysis]: Preferences: [2021-10-29 00:05:42,072 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-29 00:05:42,073 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-29 00:05:42,073 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-29 00:05:42,073 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-29 00:05:42,073 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:42,073 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-29 00:05:42,073 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-29 00:05:42,073 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration26_Loop [2021-10-29 00:05:42,073 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-29 00:05:42,073 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-29 00:05:42,074 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:42,090 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:42,095 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:42,097 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-29 00:05:42,149 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-29 00:05:42,149 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-29 00:05:42,150 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:42,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:42,151 INFO L229 MonitoredProcess]: Starting monitored process 129 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:42,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (129)] Waiting until timeout for monitored process [2021-10-29 00:05:42,152 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 [2021-10-29 00:05:42,160 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-29 00:05:42,161 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-29 00:05:42,161 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-29 00:05:42,161 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-29 00:05:42,161 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-29 00:05:42,162 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-29 00:05:42,163 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-29 00:05:42,178 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-29 00:05:42,180 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-29 00:05:42,180 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-29 00:05:42,180 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-29 00:05:42,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:05:42,181 INFO L229 MonitoredProcess]: Starting monitored process 130 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-29 00:05:42,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (130)] Waiting until timeout for monitored process [2021-10-29 00:05:42,182 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-29 00:05:42,183 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-29 00:05:42,183 INFO L513 LassoAnalysis]: Proved termination. [2021-10-29 00:05:42,183 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-29 00:05:42,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (129)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:42,204 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-29 00:05:42,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:42,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:42,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 00:05:42,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:42,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:05:42,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-29 00:05:42,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:05:42,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (130)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:42,666 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 494 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-29 00:05:42,666 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 [2021-10-29 00:05:42,667 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 214 states and 244 transitions. cyclomatic complexity: 35 Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 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) [2021-10-29 00:05:43,218 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 214 states and 244 transitions. cyclomatic complexity: 35. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 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 1239 states and 1496 transitions. Complement of second has 43 states. [2021-10-29 00:05:43,219 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 [2021-10-29 00:05:43,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 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) [2021-10-29 00:05:43,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 97 transitions. [2021-10-29 00:05:43,219 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 22 states and 97 transitions. Stem has 44 letters. Loop has 76 letters. [2021-10-29 00:05:43,221 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:05:43,221 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 22 states and 97 transitions. Stem has 120 letters. Loop has 76 letters. [2021-10-29 00:05:43,222 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:05:43,222 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 22 states and 97 transitions. Stem has 44 letters. Loop has 152 letters. [2021-10-29 00:05:43,224 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-29 00:05:43,224 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1239 states and 1496 transitions. [2021-10-29 00:05:43,233 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 80 [2021-10-29 00:05:43,239 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1239 states to 787 states and 932 transitions. [2021-10-29 00:05:43,239 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 168 [2021-10-29 00:05:43,240 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 172 [2021-10-29 00:05:43,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 787 states and 932 transitions. [2021-10-29 00:05:43,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-29 00:05:43,240 INFO L681 BuchiCegarLoop]: Abstraction has 787 states and 932 transitions. [2021-10-29 00:05:43,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states and 932 transitions. [2021-10-29 00:05:43,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 401. [2021-10-29 00:05:43,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 401 states have (on average 1.1371571072319202) internal successors, (456), 400 states have internal predecessors, (456), 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) [2021-10-29 00:05:43,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 456 transitions. [2021-10-29 00:05:43,256 INFO L704 BuchiCegarLoop]: Abstraction has 401 states and 456 transitions. [2021-10-29 00:05:43,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-29 00:05:43,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-29 00:05:43,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-29 00:05:43,257 INFO L87 Difference]: Start difference. First operand 401 states and 456 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 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) [2021-10-29 00:05:43,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:05:43,357 INFO L93 Difference]: Finished difference Result 405 states and 418 transitions. [2021-10-29 00:05:43,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-29 00:05:43,358 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 405 states and 418 transitions. [2021-10-29 00:05:43,363 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 80 [2021-10-29 00:05:43,365 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 405 states to 292 states and 305 transitions. [2021-10-29 00:05:43,365 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 178 [2021-10-29 00:05:43,366 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 284 [2021-10-29 00:05:43,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 292 states and 305 transitions. [2021-10-29 00:05:43,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-29 00:05:43,366 INFO L681 BuchiCegarLoop]: Abstraction has 292 states and 305 transitions. [2021-10-29 00:05:43,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states and 305 transitions. [2021-10-29 00:05:43,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 169. [2021-10-29 00:05:43,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 169 states have (on average 1.0769230769230769) internal successors, (182), 168 states have internal predecessors, (182), 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) [2021-10-29 00:05:43,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 182 transitions. [2021-10-29 00:05:43,370 INFO L704 BuchiCegarLoop]: Abstraction has 169 states and 182 transitions. [2021-10-29 00:05:43,370 INFO L587 BuchiCegarLoop]: Abstraction has 169 states and 182 transitions. [2021-10-29 00:05:43,371 INFO L425 BuchiCegarLoop]: ======== Iteration 27============ [2021-10-29 00:05:43,371 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 169 states and 182 transitions. [2021-10-29 00:05:43,371 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 80 [2021-10-29 00:05:43,372 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-29 00:05:43,372 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-29 00:05:43,372 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2021-10-29 00:05:43,372 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [20, 19, 19, 10, 10, 1, 1] [2021-10-29 00:05:43,373 INFO L791 eck$LassoCheckResult]: Stem: 27494#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 27495#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27493#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 27487#L12-2 assume !(main_~i~0 <= 0); 27488#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 27491#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27492#L12 assume !(main_~i~0 >= 10); 27485#L12-2 [2021-10-29 00:05:43,373 INFO L793 eck$LassoCheckResult]: Loop: 27485#L12-2 assume !(main_~i~0 <= 0); 27486#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 27615#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27614#L12 assume !(main_~i~0 >= 10); 27613#L12-2 assume !(main_~i~0 <= 0); 27612#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 27611#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27610#L12 assume !(main_~i~0 >= 10); 27609#L12-2 assume !(main_~i~0 <= 0); 27608#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 27607#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27606#L12 assume !(main_~i~0 >= 10); 27605#L12-2 assume !(main_~i~0 <= 0); 27604#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 27603#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27602#L12 assume !(main_~i~0 >= 10); 27601#L12-2 assume !(main_~i~0 <= 0); 27600#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 27599#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27598#L12 assume !(main_~i~0 >= 10); 27597#L12-2 assume !(main_~i~0 <= 0); 27596#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 27595#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27594#L12 assume !(main_~i~0 >= 10); 27593#L12-2 assume !(main_~i~0 <= 0); 27592#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 27591#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27590#L12 assume !(main_~i~0 >= 10); 27589#L12-2 assume !(main_~i~0 <= 0); 27588#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 27587#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27586#L12 assume !(main_~i~0 >= 10); 27585#L12-2 assume !(main_~i~0 <= 0); 27584#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 27583#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27582#L12 assume !(main_~i~0 >= 10); 27580#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 27579#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 27489#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27490#L12 assume !(main_~i~0 >= 10); 27500#L12-2 assume !(main_~i~0 <= 0); 27581#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 27653#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27652#L12 assume !(main_~i~0 >= 10); 27651#L12-2 assume !(main_~i~0 <= 0); 27650#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 27649#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27648#L12 assume !(main_~i~0 >= 10); 27647#L12-2 assume !(main_~i~0 <= 0); 27646#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 27645#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27644#L12 assume !(main_~i~0 >= 10); 27643#L12-2 assume !(main_~i~0 <= 0); 27642#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 27641#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27640#L12 assume !(main_~i~0 >= 10); 27639#L12-2 assume !(main_~i~0 <= 0); 27638#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 27637#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27636#L12 assume !(main_~i~0 >= 10); 27635#L12-2 assume !(main_~i~0 <= 0); 27634#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 27633#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27632#L12 assume !(main_~i~0 >= 10); 27631#L12-2 assume !(main_~i~0 <= 0); 27630#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 27629#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27628#L12 assume !(main_~i~0 >= 10); 27627#L12-2 assume !(main_~i~0 <= 0); 27626#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 27625#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27624#L12 assume !(main_~i~0 >= 10); 27623#L12-2 assume !(main_~i~0 <= 0); 27622#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 27621#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27616#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 27617#L12-2 assume !(main_~i~0 <= 0); 27496#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 27497#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27620#L12 assume !(main_~i~0 >= 10); 27485#L12-2 [2021-10-29 00:05:43,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:43,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1365704114, now seen corresponding path program 1 times [2021-10-29 00:05:43,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:43,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883943265] [2021-10-29 00:05:43,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:43,374 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:43,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:43,394 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:05:43,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:43,397 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:05:43,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:43,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1260641161, now seen corresponding path program 18 times [2021-10-29 00:05:43,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:43,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176440457] [2021-10-29 00:05:43,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:43,398 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:43,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:43,417 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:05:43,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:43,436 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:05:43,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:05:43,437 INFO L85 PathProgramCache]: Analyzing trace with hash -689456170, now seen corresponding path program 17 times [2021-10-29 00:05:43,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-29 00:05:43,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022901292] [2021-10-29 00:05:43,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:05:43,438 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 00:05:43,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:43,460 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:05:43,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:05:43,473 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-29 00:05:44,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.10 12:05:44 BoogieIcfgContainer [2021-10-29 00:05:44,102 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-29 00:05:44,102 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 00:05:44,102 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 00:05:44,103 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 00:05:44,103 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:05:08" (3/4) ... [2021-10-29 00:05:44,106 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-29 00:05:44,164 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-29 00:05:44,164 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 00:05:44,166 INFO L168 Benchmark]: Toolchain (without parser) took 36294.15 ms. Allocated memory was 88.1 MB in the beginning and 494.9 MB in the end (delta: 406.8 MB). Free memory was 52.9 MB in the beginning and 154.9 MB in the end (delta: -102.0 MB). Peak memory consumption was 305.7 MB. Max. memory is 16.1 GB. [2021-10-29 00:05:44,166 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 88.1 MB. Free memory is still 53.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 00:05:44,167 INFO L168 Benchmark]: CACSL2BoogieTranslator took 202.43 ms. Allocated memory is still 88.1 MB. Free memory was 52.8 MB in the beginning and 44.3 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 00:05:44,167 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.26 ms. Allocated memory is still 88.1 MB. Free memory was 44.2 MB in the beginning and 43.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 00:05:44,168 INFO L168 Benchmark]: Boogie Preprocessor took 21.35 ms. Allocated memory is still 88.1 MB. Free memory was 43.0 MB in the beginning and 42.0 MB in the end (delta: 937.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 00:05:44,168 INFO L168 Benchmark]: RCFGBuilder took 324.81 ms. Allocated memory was 88.1 MB in the beginning and 115.3 MB in the end (delta: 27.3 MB). Free memory was 42.0 MB in the beginning and 87.5 MB in the end (delta: -45.4 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. [2021-10-29 00:05:44,169 INFO L168 Benchmark]: BuchiAutomizer took 35637.51 ms. Allocated memory was 115.3 MB in the beginning and 494.9 MB in the end (delta: 379.6 MB). Free memory was 87.5 MB in the beginning and 158.1 MB in the end (delta: -70.6 MB). Peak memory consumption was 309.5 MB. Max. memory is 16.1 GB. [2021-10-29 00:05:44,169 INFO L168 Benchmark]: Witness Printer took 62.11 ms. Allocated memory is still 494.9 MB. Free memory was 158.1 MB in the beginning and 154.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 00:05:44,171 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 88.1 MB. Free memory is still 53.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 202.43 ms. Allocated memory is still 88.1 MB. Free memory was 52.8 MB in the beginning and 44.3 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 30.26 ms. Allocated memory is still 88.1 MB. Free memory was 44.2 MB in the beginning and 43.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.35 ms. Allocated memory is still 88.1 MB. Free memory was 43.0 MB in the beginning and 42.0 MB in the end (delta: 937.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 324.81 ms. Allocated memory was 88.1 MB in the beginning and 115.3 MB in the end (delta: 27.3 MB). Free memory was 42.0 MB in the beginning and 87.5 MB in the end (delta: -45.4 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 35637.51 ms. Allocated memory was 115.3 MB in the beginning and 494.9 MB in the end (delta: 379.6 MB). Free memory was 87.5 MB in the beginning and 158.1 MB in the end (delta: -70.6 MB). Peak memory consumption was 309.5 MB. Max. memory is 16.1 GB. * Witness Printer took 62.11 ms. Allocated memory is still 494.9 MB. Free memory was 158.1 MB in the beginning and 154.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 37 terminating modules (22 trivial, 14 deterministic, 1 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function i and consists of 4 locations. One deterministic module has affine ranking function i and consists of 4 locations. One deterministic module has affine ranking function -2 * i + 1 and consists of 4 locations. One deterministic module has affine ranking function -2 * i + 17 and consists of 4 locations. One deterministic module has affine ranking function i and consists of 4 locations. One deterministic module has affine ranking function -1 * i and consists of 4 locations. One deterministic module has affine ranking function i and consists of 8 locations. One deterministic module has affine ranking function i and consists of 10 locations. One deterministic module has affine ranking function i and consists of 12 locations. One deterministic module has affine ranking function i and consists of 14 locations. One deterministic module has affine ranking function i and consists of 16 locations. One deterministic module has affine ranking function i and consists of 18 locations. One deterministic module has affine ranking function i and consists of 20 locations. One deterministic module has affine ranking function i and consists of 22 locations. One nondeterministic module has affine ranking function -2 * i + 17 and consists of 4 locations. 22 modules have a trivial ranking function, the largest among these consists of 12 locations. The remainder module has 169 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 35.5s and 27 iterations. TraceHistogramMax:20. Analysis of lassos took 25.8s. Construction of modules took 1.6s. Büchi inclusion checks took 7.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 36. Automata minimization 0.3s AutomataMinimizationTime, 37 MinimizatonAttempts, 1211 StatesRemovedByMinimization, 36 NontrivialMinimizations. Non-live state removal took 0.2s Buchi closure took 0.0s. Biggest automaton had 214 states and ocurred in iteration 18. Nontrivial modules had stage [14, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1520/3680 HoareTripleCheckerStatistics: 262 SDtfs, 729 SDslu, 9 SDs, 0 SdLazy, 2225 SolverSat, 277 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT4 conc0 concLT10 SILN0 SILU0 SILI9 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax164 hnf99 lsp44 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq127 hnf96 smp100 dnf100 smp100 tf112 neg100 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 52ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 23 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 15 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 2.2s - 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@dde74e8=0, \result=0, i=9} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 11]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] int up; [L8] i = __VERIFIER_nondet_int() [L9] up = 0 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND TRUE i >= 10 [L13] up = 0 [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) Loop: [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND TRUE i <= 0 [L16] up = 1 [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND TRUE i >= 10 [L13] up = 0 [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-29 00:05:44,213 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Ended with exit code 0 [2021-10-29 00:05:44,415 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Ended with exit code 0 [2021-10-29 00:05:44,617 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Ended with exit code 0 [2021-10-29 00:05:44,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:45,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:45,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:45,417 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2021-10-29 00:05:45,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:45,817 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2021-10-29 00:05:46,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:46,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:46,421 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2021-10-29 00:05:46,618 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2021-10-29 00:05:46,819 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2021-10-29 00:05:47,017 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2021-10-29 00:05:47,218 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2021-10-29 00:05:47,416 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2021-10-29 00:05:47,616 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2021-10-29 00:05:47,821 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2021-10-29 00:05:48,021 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2021-10-29 00:05:48,222 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2021-10-29 00:05:48,420 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2021-10-29 00:05:48,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:48,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:49,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2021-10-29 00:05:49,223 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2021-10-29 00:05:49,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7574c3c-78df-49f8-b246-e2f32db3bbe3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...