./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_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/UpAndDownIneq.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg --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 [2021-10-28 09:42:56,324 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:42:56,326 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:42:56,359 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:42:56,359 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:42:56,360 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:42:56,362 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:42:56,364 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:42:56,367 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:42:56,368 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:42:56,369 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:42:56,370 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:42:56,371 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:42:56,372 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:42:56,374 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:42:56,376 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:42:56,377 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:42:56,378 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:42:56,380 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:42:56,383 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:42:56,385 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:42:56,387 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:42:56,388 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:42:56,389 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:42:56,393 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:42:56,401 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:42:56,401 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:42:56,402 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:42:56,403 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:42:56,404 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:42:56,406 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:42:56,407 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:42:56,408 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:42:56,409 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:42:56,411 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:42:56,412 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:42:56,413 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:42:56,413 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:42:56,414 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:42:56,415 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:42:56,415 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:42:56,416 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-28 09:42:56,453 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:42:56,453 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:42:56,453 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:42:56,453 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:42:56,455 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:42:56,455 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:42:56,455 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:42:56,455 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 09:42:56,455 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 09:42:56,456 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 09:42:56,456 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 09:42:56,456 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 09:42:56,456 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 09:42:56,457 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:42:56,457 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:42:56,457 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:42:56,457 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:42:56,457 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 09:42:56,458 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 09:42:56,458 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 09:42:56,458 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:42:56,458 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 09:42:56,459 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:42:56,459 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 09:42:56,459 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:42:56,460 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:42:56,460 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:42:56,460 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:42:56,462 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:42:56,463 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 09:42:56,463 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_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c4ca36c34c25cccb97ec2e65527d2a743b4e62b95f1f396c9f281ef44a01670 [2021-10-28 09:42:56,719 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:42:56,740 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:42:56,743 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:42:56,744 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:42:56,745 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:42:56,746 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/termination-restricted-15/UpAndDownIneq.c [2021-10-28 09:42:56,820 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/data/5823dd613/886a4c55c62b40f4bcb8e05c42dda2cd/FLAGb13ba7d32 [2021-10-28 09:42:57,349 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:42:57,350 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/sv-benchmarks/c/termination-restricted-15/UpAndDownIneq.c [2021-10-28 09:42:57,356 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/data/5823dd613/886a4c55c62b40f4bcb8e05c42dda2cd/FLAGb13ba7d32 [2021-10-28 09:42:57,713 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/data/5823dd613/886a4c55c62b40f4bcb8e05c42dda2cd [2021-10-28 09:42:57,717 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:42:57,718 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:42:57,731 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:42:57,731 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:42:57,734 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:42:57,735 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:42:57" (1/1) ... [2021-10-28 09:42:57,739 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3053c746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:42:57, skipping insertion in model container [2021-10-28 09:42:57,739 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:42:57" (1/1) ... [2021-10-28 09:42:57,745 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:42:57,755 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:42:57,888 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:42:57,913 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:42:57,924 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:42:57,936 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:42:57,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:42:57 WrapperNode [2021-10-28 09:42:57,936 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:42:57,938 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:42:57,938 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:42:57,938 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:42:57,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:42:57" (1/1) ... [2021-10-28 09:42:57,953 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:42:57" (1/1) ... [2021-10-28 09:42:57,974 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:42:57,975 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:42:57,975 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:42:57,976 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:42:57,991 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:42:57" (1/1) ... [2021-10-28 09:42:57,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:42:57" (1/1) ... [2021-10-28 09:42:57,992 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:42:57" (1/1) ... [2021-10-28 09:42:57,992 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:42:57" (1/1) ... [2021-10-28 09:42:57,995 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:42:57" (1/1) ... [2021-10-28 09:42:58,000 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:42:57" (1/1) ... [2021-10-28 09:42:58,001 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:42:57" (1/1) ... [2021-10-28 09:42:58,002 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:42:58,003 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:42:58,004 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:42:58,004 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:42:58,006 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:42:57" (1/1) ... [2021-10-28 09:42:58,013 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:42:58,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:42:58,042 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:42:58,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 09:42:58,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:42:58,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:42:58,230 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:42:58,230 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-28 09:42:58,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:42:58 BoogieIcfgContainer [2021-10-28 09:42:58,232 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:42:58,232 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 09:42:58,233 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 09:42:58,236 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 09:42:58,236 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:42:58,236 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 09:42:57" (1/3) ... [2021-10-28 09:42:58,237 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1700fedc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 09:42:58, skipping insertion in model container [2021-10-28 09:42:58,237 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:42:58,237 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:42:57" (2/3) ... [2021-10-28 09:42:58,238 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1700fedc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 09:42:58, skipping insertion in model container [2021-10-28 09:42:58,238 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:42:58,238 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:42:58" (3/3) ... [2021-10-28 09:42:58,239 INFO L389 chiAutomizerObserver]: Analyzing ICFG UpAndDownIneq.c [2021-10-28 09:42:58,283 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 09:42:58,284 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 09:42:58,284 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 09:42:58,284 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 09:42:58,284 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 09:42:58,284 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 09:42:58,284 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 09:42:58,285 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 09:42:58,299 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) [2021-10-28 09:42:58,315 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-28 09:42:58,315 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:42:58,316 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:42:58,321 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-28 09:42:58,322 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-28 09:42:58,322 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 09:42:58,322 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) [2021-10-28 09:42:58,324 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-28 09:42:58,324 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:42:58,324 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:42:58,324 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-28 09:42:58,324 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-28 09:42:58,331 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 [2021-10-28 09:42:58,331 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 [2021-10-28 09:42:58,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:42:58,338 INFO L85 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-10-28 09:42:58,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:42:58,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332389160] [2021-10-28 09:42:58,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:58,349 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:42:58,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:42:58,445 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:42:58,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:42:58,488 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:42:58,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:42:58,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1234538, now seen corresponding path program 1 times [2021-10-28 09:42:58,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:42:58,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097582856] [2021-10-28 09:42:58,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:58,508 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:42:58,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:42:58,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:42:58,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:42:58,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097582856] [2021-10-28 09:42:58,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097582856] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:42:58,590 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:42:58,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:42:58,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700511962] [2021-10-28 09:42:58,595 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:42:58,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:42:58,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:42:58,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:42:58,612 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) [2021-10-28 09:42:58,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:42:58,677 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2021-10-28 09:42:58,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:42:58,679 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 21 transitions. [2021-10-28 09:42:58,680 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-10-28 09:42:58,685 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 9 states and 13 transitions. [2021-10-28 09:42:58,686 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2021-10-28 09:42:58,686 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2021-10-28 09:42:58,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 13 transitions. [2021-10-28 09:42:58,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:42:58,687 INFO L681 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2021-10-28 09:42:58,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 13 transitions. [2021-10-28 09:42:58,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-28 09:42:58,711 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) [2021-10-28 09:42:58,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 13 transitions. [2021-10-28 09:42:58,713 INFO L704 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2021-10-28 09:42:58,713 INFO L587 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2021-10-28 09:42:58,713 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 09:42:58,713 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 13 transitions. [2021-10-28 09:42:58,714 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-10-28 09:42:58,714 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:42:58,714 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:42:58,714 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-28 09:42:58,714 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-28 09:42:58,715 INFO L791 eck$LassoCheckResult]: Stem: 37#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 38#L18-1 [2021-10-28 09:42:58,715 INFO L793 eck$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 [2021-10-28 09:42:58,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:42:58,716 INFO L85 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2021-10-28 09:42:58,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:42:58,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141063578] [2021-10-28 09:42:58,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:58,717 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:42:58,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:42:58,722 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:42:58,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:42:58,726 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:42:58,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:42:58,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1234602, now seen corresponding path program 1 times [2021-10-28 09:42:58,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:42:58,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436591141] [2021-10-28 09:42:58,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:58,728 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:42:58,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:42:58,736 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:42:58,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:42:58,743 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:42:58,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:42:58,744 INFO L85 PathProgramCache]: Analyzing trace with hash 29863753, now seen corresponding path program 1 times [2021-10-28 09:42:58,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:42:58,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617155007] [2021-10-28 09:42:58,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:58,745 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:42:58,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:42:58,753 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:42:58,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:42:58,760 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:42:58,853 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:42:58,854 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:42:58,855 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:42:58,855 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:42:58,855 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:42:58,855 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:42:58,862 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:42:58,862 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:42:58,862 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration2_Loop [2021-10-28 09:42:58,862 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:42:58,863 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:42:58,886 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:42:58,893 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:42:58,898 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:42:58,903 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:42:58,995 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:42:58,996 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:42:59,007 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:42:59,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:42:59,012 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:42:59,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-28 09:42:59,018 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:42:59,019 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:42:59,056 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:42:59,056 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: [] [2021-10-28 09:42:59,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:42:59,094 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:42:59,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:42:59,096 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:42:59,103 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:42:59,104 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:42:59,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-28 09:42:59,123 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:42:59,123 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: [] [2021-10-28 09:42:59,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:42:59,160 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:42:59,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:42:59,161 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:42:59,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-28 09:42:59,164 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:42:59,164 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:42:59,182 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:42:59,182 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: [] [2021-10-28 09:42:59,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:42:59,209 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:42:59,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:42:59,211 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:42:59,215 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:42:59,215 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:42:59,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-28 09:42:59,262 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2021-10-28 09:42:59,262 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:42:59,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:42:59,264 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:42:59,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-28 09:42:59,266 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:42:59,266 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:42:59,307 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:42:59,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-28 09:42:59,344 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:42:59,344 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:42:59,344 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:42:59,344 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:42:59,344 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:42:59,344 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:42:59,345 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:42:59,345 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:42:59,345 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration2_Loop [2021-10-28 09:42:59,345 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:42:59,345 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:42:59,347 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:42:59,354 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:42:59,357 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:42:59,362 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:42:59,423 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:42:59,427 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:42:59,429 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:42:59,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:42:59,431 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:42:59,439 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 [2021-10-28 09:42:59,450 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:42:59,451 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:42:59,451 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:42:59,451 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:42:59,459 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:42:59,461 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:42:59,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-28 09:42:59,487 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:42:59,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-28 09:42:59,524 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:42:59,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:42:59,525 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:42:59,533 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 [2021-10-28 09:42:59,542 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:42:59,542 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:42:59,542 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:42:59,542 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:42:59,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-28 09:42:59,547 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:42:59,547 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:42:59,567 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:42:59,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-28 09:42:59,600 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:42:59,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:42:59,601 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:42:59,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-28 09:42:59,603 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 [2021-10-28 09:42:59,610 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:42:59,610 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:42:59,611 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:42:59,611 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:42:59,611 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:42:59,612 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:42:59,612 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:42:59,622 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:42:59,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-28 09:42:59,644 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:42:59,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:42:59,645 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:42:59,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-28 09:42:59,647 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 [2021-10-28 09:42:59,655 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:42:59,655 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:42:59,655 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:42:59,655 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:42:59,656 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:42:59,657 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:42:59,657 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:42:59,677 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:42:59,681 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 09:42:59,682 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 09:42:59,683 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:42:59,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:42:59,691 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:42:59,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-28 09:42:59,733 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:42:59,733 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:42:59,733 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:42:59,734 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-28 09:42:59,783 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2021-10-28 09:42:59,786 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:42:59,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:42:59,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:42:59,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:42:59,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:42:59,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:42:59,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:42:59,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:42:59,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:42:59,908 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 [2021-10-28 09:42:59,909 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) [2021-10-28 09:42:59,957 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. [2021-10-28 09:42:59,957 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 [2021-10-28 09:42:59,958 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) [2021-10-28 09:42:59,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2021-10-28 09:42:59,959 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 1 letters. Loop has 4 letters. [2021-10-28 09:42:59,960 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:42:59,960 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 5 letters. Loop has 4 letters. [2021-10-28 09:42:59,960 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:42:59,960 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 1 letters. Loop has 8 letters. [2021-10-28 09:42:59,961 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:42:59,961 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 36 transitions. [2021-10-28 09:42:59,962 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2021-10-28 09:42:59,963 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 24 states and 36 transitions. [2021-10-28 09:42:59,963 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2021-10-28 09:42:59,964 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-10-28 09:42:59,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 36 transitions. [2021-10-28 09:42:59,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:42:59,964 INFO L681 BuchiCegarLoop]: Abstraction has 24 states and 36 transitions. [2021-10-28 09:42:59,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 36 transitions. [2021-10-28 09:42:59,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2021-10-28 09:42:59,967 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) [2021-10-28 09:42:59,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 34 transitions. [2021-10-28 09:42:59,968 INFO L704 BuchiCegarLoop]: Abstraction has 23 states and 34 transitions. [2021-10-28 09:42:59,968 INFO L587 BuchiCegarLoop]: Abstraction has 23 states and 34 transitions. [2021-10-28 09:42:59,968 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 09:42:59,968 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 34 transitions. [2021-10-28 09:42:59,969 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2021-10-28 09:42:59,969 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:42:59,970 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:42:59,970 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:42:59,970 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-28 09:42:59,970 INFO L791 eck$LassoCheckResult]: Stem: 115#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 116#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 112#L12 [2021-10-28 09:42:59,970 INFO L793 eck$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 [2021-10-28 09:42:59,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:42:59,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2021-10-28 09:42:59,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:42:59,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136130900] [2021-10-28 09:42:59,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:59,972 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:42:59,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:42:59,977 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:42:59,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:42:59,980 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:42:59,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:42:59,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1389492, now seen corresponding path program 1 times [2021-10-28 09:42:59,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:42:59,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421531577] [2021-10-28 09:42:59,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:59,982 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:42:59,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:42:59,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:42:59,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:42:59,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421531577] [2021-10-28 09:42:59,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421531577] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:42:59,998 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:42:59,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:42:59,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813460514] [2021-10-28 09:42:59,999 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:42:59,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:43:00,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:43:00,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:43:00,000 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) [2021-10-28 09:43:00,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:43:00,009 INFO L93 Difference]: Finished difference Result 29 states and 41 transitions. [2021-10-28 09:43:00,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:43:00,009 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 41 transitions. [2021-10-28 09:43:00,011 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2021-10-28 09:43:00,012 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 28 states and 40 transitions. [2021-10-28 09:43:00,012 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21 [2021-10-28 09:43:00,012 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2021-10-28 09:43:00,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 40 transitions. [2021-10-28 09:43:00,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:43:00,012 INFO L681 BuchiCegarLoop]: Abstraction has 28 states and 40 transitions. [2021-10-28 09:43:00,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 40 transitions. [2021-10-28 09:43:00,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2021-10-28 09:43:00,015 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) [2021-10-28 09:43:00,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 39 transitions. [2021-10-28 09:43:00,022 INFO L704 BuchiCegarLoop]: Abstraction has 27 states and 39 transitions. [2021-10-28 09:43:00,022 INFO L587 BuchiCegarLoop]: Abstraction has 27 states and 39 transitions. [2021-10-28 09:43:00,022 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 09:43:00,022 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 39 transitions. [2021-10-28 09:43:00,023 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2021-10-28 09:43:00,023 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:43:00,024 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:43:00,024 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:43:00,024 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-28 09:43:00,024 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 [2021-10-28 09:43:00,024 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 [2021-10-28 09:43:00,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:00,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 2 times [2021-10-28 09:43:00,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:00,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090453514] [2021-10-28 09:43:00,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:00,026 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:00,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:00,030 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:43:00,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:00,033 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:43:00,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:00,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1391414, now seen corresponding path program 1 times [2021-10-28 09:43:00,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:00,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831300276] [2021-10-28 09:43:00,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:00,034 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:00,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:00,039 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:43:00,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:00,043 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:43:00,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:00,044 INFO L85 PathProgramCache]: Analyzing trace with hash 925835935, now seen corresponding path program 1 times [2021-10-28 09:43:00,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:00,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096241248] [2021-10-28 09:43:00,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:00,044 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:00,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:00,050 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:43:00,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:00,055 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:43:00,086 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:43:00,087 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:43:00,087 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:43:00,087 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:43:00,087 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:43:00,087 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:00,087 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:43:00,087 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:43:00,087 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration4_Loop [2021-10-28 09:43:00,087 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:43:00,087 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:43:00,089 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:00,092 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:00,107 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:00,109 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:00,157 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:43:00,157 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:43:00,158 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:00,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:00,163 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:00,167 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:43:00,167 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:43:00,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-28 09:43:00,202 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:43:00,202 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: [] [2021-10-28 09:43:00,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:00,238 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:00,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:00,243 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:00,249 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:43:00,249 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:43:00,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-28 09:43:00,279 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:43:00,279 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: [] [2021-10-28 09:43:00,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:00,315 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:00,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:00,316 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:00,323 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:43:00,323 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:43:00,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-28 09:43:00,351 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:43:00,351 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: [] [2021-10-28 09:43:00,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:00,387 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:00,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:00,388 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:00,394 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:43:00,394 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:43:00,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-28 09:43:00,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:00,449 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:00,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:00,450 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:00,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-28 09:43:00,453 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:43:00,453 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:43:00,476 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:43:00,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:00,495 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:43:00,495 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:43:00,495 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:43:00,495 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:43:00,496 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:43:00,496 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:00,496 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:43:00,496 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:43:00,496 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration4_Loop [2021-10-28 09:43:00,496 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:43:00,496 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:43:00,497 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:00,503 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:00,507 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:00,511 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:00,563 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:43:00,563 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:43:00,563 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:00,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:00,564 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:00,569 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 [2021-10-28 09:43:00,577 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:43:00,578 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:43:00,578 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:43:00,578 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:43:00,584 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:43:00,584 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:43:00,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-28 09:43:00,611 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:43:00,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:00,647 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:00,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:00,648 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:00,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-10-28 09:43:00,659 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 [2021-10-28 09:43:00,674 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:43:00,674 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:43:00,674 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:43:00,674 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:43:00,674 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:43:00,675 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:43:00,675 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:43:00,691 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:43:00,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:00,727 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:00,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:00,728 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:00,734 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 [2021-10-28 09:43:00,743 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:43:00,744 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:43:00,744 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:43:00,744 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:43:00,755 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:43:00,755 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:43:00,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-10-28 09:43:00,775 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:43:00,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:00,801 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:00,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:00,802 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:00,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-10-28 09:43:00,808 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 [2021-10-28 09:43:00,815 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:43:00,815 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:43:00,816 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:43:00,816 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:43:00,816 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:43:00,817 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:43:00,817 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:43:00,820 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:43:00,825 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-28 09:43:00,825 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 09:43:00,825 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:00,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:00,826 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:00,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-10-28 09:43:00,827 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:43:00,827 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:43:00,827 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:43:00,828 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-28 09:43:00,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:00,847 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:43:00,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:00,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:00,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:43:00,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:00,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:00,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:43:00,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:00,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:43:00,970 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 [2021-10-28 09:43:00,971 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) [2021-10-28 09:43:00,992 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. [2021-10-28 09:43:00,993 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 [2021-10-28 09:43:00,993 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) [2021-10-28 09:43:00,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2021-10-28 09:43:00,993 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 2 letters. Loop has 4 letters. [2021-10-28 09:43:00,994 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:43:00,994 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 6 letters. Loop has 4 letters. [2021-10-28 09:43:00,994 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:43:00,994 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 2 letters. Loop has 8 letters. [2021-10-28 09:43:00,995 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:43:00,995 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 68 transitions. [2021-10-28 09:43:00,998 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-10-28 09:43:00,999 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 37 states and 55 transitions. [2021-10-28 09:43:01,000 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2021-10-28 09:43:01,000 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2021-10-28 09:43:01,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 55 transitions. [2021-10-28 09:43:01,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:43:01,000 INFO L681 BuchiCegarLoop]: Abstraction has 37 states and 55 transitions. [2021-10-28 09:43:01,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 55 transitions. [2021-10-28 09:43:01,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2021-10-28 09:43:01,003 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) [2021-10-28 09:43:01,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2021-10-28 09:43:01,005 INFO L704 BuchiCegarLoop]: Abstraction has 30 states and 44 transitions. [2021-10-28 09:43:01,005 INFO L587 BuchiCegarLoop]: Abstraction has 30 states and 44 transitions. [2021-10-28 09:43:01,005 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-28 09:43:01,005 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 30 states and 44 transitions. [2021-10-28 09:43:01,006 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-10-28 09:43:01,006 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:43:01,006 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:43:01,006 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-28 09:43:01,007 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-28 09:43:01,007 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 [2021-10-28 09:43:01,007 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 [2021-10-28 09:43:01,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:01,008 INFO L85 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2021-10-28 09:43:01,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:01,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703903074] [2021-10-28 09:43:01,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:01,008 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:01,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:01,013 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:43:01,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:01,016 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:43:01,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:01,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1513900, now seen corresponding path program 1 times [2021-10-28 09:43:01,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:01,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632098377] [2021-10-28 09:43:01,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:01,017 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:01,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:01,023 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:43:01,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:01,044 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:43:01,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:01,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1363918576, now seen corresponding path program 1 times [2021-10-28 09:43:01,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:01,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675872465] [2021-10-28 09:43:01,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:01,045 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:01,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:01,051 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:43:01,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:01,056 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:43:01,084 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:43:01,084 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:43:01,084 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:43:01,085 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:43:01,085 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:43:01,085 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:01,085 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:43:01,085 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:43:01,085 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration5_Loop [2021-10-28 09:43:01,085 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:43:01,086 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:43:01,087 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:01,090 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:01,095 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:01,098 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:01,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:01,164 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:43:01,164 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:43:01,165 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:01,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:01,169 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:01,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:01,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-10-28 09:43:01,187 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:43:01,187 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:43:01,219 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:43:01,219 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: [] [2021-10-28 09:43:01,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:01,255 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:01,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:01,259 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:01,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-10-28 09:43:01,263 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:43:01,263 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:43:01,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:01,293 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:01,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:01,293 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:01,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-10-28 09:43:01,295 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:43:01,295 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:43:01,328 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:43:01,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:01,333 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:43:01,334 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:43:01,334 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:43:01,334 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:43:01,334 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:43:01,334 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:01,334 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:43:01,334 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:43:01,334 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration5_Loop [2021-10-28 09:43:01,334 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:43:01,334 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:43:01,335 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:01,341 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:01,343 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:01,353 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:01,404 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:43:01,404 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:43:01,405 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:01,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:01,406 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:01,415 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 [2021-10-28 09:43:01,424 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:43:01,424 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:43:01,425 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:43:01,425 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:43:01,425 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:43:01,426 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:43:01,426 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:43:01,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-10-28 09:43:01,437 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:43:01,451 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 09:43:01,452 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 09:43:01,452 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:01,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:01,453 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:01,455 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:43:01,455 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:43:01,455 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:43:01,455 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 1 Supporting invariants [] [2021-10-28 09:43:01,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-10-28 09:43:01,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:01,496 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:43:01,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:01,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:01,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:43:01,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:01,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:01,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:43:01,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:01,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:43:01,593 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 [2021-10-28 09:43:01,593 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) [2021-10-28 09:43:01,618 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. [2021-10-28 09:43:01,618 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 [2021-10-28 09:43:01,618 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) [2021-10-28 09:43:01,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2021-10-28 09:43:01,619 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 3 letters. Loop has 4 letters. [2021-10-28 09:43:01,619 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:43:01,619 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 7 letters. Loop has 4 letters. [2021-10-28 09:43:01,620 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:43:01,620 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 3 letters. Loop has 8 letters. [2021-10-28 09:43:01,620 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:43:01,620 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 76 states and 108 transitions. [2021-10-28 09:43:01,623 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 26 [2021-10-28 09:43:01,625 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 76 states to 68 states and 98 transitions. [2021-10-28 09:43:01,625 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2021-10-28 09:43:01,626 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2021-10-28 09:43:01,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 68 states and 98 transitions. [2021-10-28 09:43:01,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:43:01,626 INFO L681 BuchiCegarLoop]: Abstraction has 68 states and 98 transitions. [2021-10-28 09:43:01,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states and 98 transitions. [2021-10-28 09:43:01,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 56. [2021-10-28 09:43:01,637 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) [2021-10-28 09:43:01,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 84 transitions. [2021-10-28 09:43:01,641 INFO L704 BuchiCegarLoop]: Abstraction has 56 states and 84 transitions. [2021-10-28 09:43:01,641 INFO L587 BuchiCegarLoop]: Abstraction has 56 states and 84 transitions. [2021-10-28 09:43:01,641 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-28 09:43:01,641 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 56 states and 84 transitions. [2021-10-28 09:43:01,643 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 22 [2021-10-28 09:43:01,645 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:43:01,645 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:43:01,646 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-28 09:43:01,646 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-28 09:43:01,646 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 [2021-10-28 09:43:01,646 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 [2021-10-28 09:43:01,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:01,647 INFO L85 PathProgramCache]: Analyzing trace with hash 963408, now seen corresponding path program 1 times [2021-10-28 09:43:01,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:01,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043494183] [2021-10-28 09:43:01,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:01,648 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:01,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:01,670 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:43:01,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:01,674 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:43:01,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:01,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1678392, now seen corresponding path program 1 times [2021-10-28 09:43:01,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:01,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251148983] [2021-10-28 09:43:01,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:01,676 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:01,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:01,679 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:43:01,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:01,690 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:43:01,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:01,691 INFO L85 PathProgramCache]: Analyzing trace with hash 670044167, now seen corresponding path program 1 times [2021-10-28 09:43:01,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:01,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309390536] [2021-10-28 09:43:01,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:01,691 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:01,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:01,713 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:43:01,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:43:01,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309390536] [2021-10-28 09:43:01,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309390536] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:43:01,714 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:43:01,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 09:43:01,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283380715] [2021-10-28 09:43:01,740 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:43:01,741 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:43:01,741 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:43:01,741 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:43:01,741 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:43:01,741 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:01,741 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:43:01,741 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:43:01,742 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration6_Loop [2021-10-28 09:43:01,742 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:43:01,742 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:43:01,743 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:01,748 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:01,751 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:01,757 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:01,794 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:43:01,794 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:43:01,794 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:01,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:01,795 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:01,799 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:43:01,799 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:43:01,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-10-28 09:43:01,847 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2021-10-28 09:43:01,848 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:01,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:01,848 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:01,852 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:43:01,852 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:43:01,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-10-28 09:43:01,950 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:43:01,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:01,953 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:43:01,953 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:43:01,953 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:43:01,953 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:43:01,953 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:43:01,953 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:01,953 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:43:01,954 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:43:01,954 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration6_Loop [2021-10-28 09:43:01,954 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:43:01,954 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:43:01,955 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:01,962 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:01,964 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:01,966 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:02,010 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:43:02,011 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:43:02,011 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:02,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:02,015 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:02,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-10-28 09:43:02,017 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 [2021-10-28 09:43:02,024 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:43:02,024 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:43:02,024 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:43:02,024 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:43:02,024 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:43:02,026 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:43:02,026 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:43:02,034 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:43:02,036 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 09:43:02,036 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 09:43:02,036 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:02,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:02,037 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:02,038 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:43:02,038 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:43:02,039 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:43:02,039 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 17 Supporting invariants [] [2021-10-28 09:43:02,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-10-28 09:43:02,063 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2021-10-28 09:43:02,064 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:43:02,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:02,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:02,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:43:02,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:02,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:02,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:43:02,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:02,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:43:02,139 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 [2021-10-28 09:43:02,139 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) [2021-10-28 09:43:02,199 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. [2021-10-28 09:43:02,199 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 [2021-10-28 09:43:02,200 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) [2021-10-28 09:43:02,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2021-10-28 09:43:02,200 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 4 letters. Loop has 4 letters. [2021-10-28 09:43:02,201 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:43:02,201 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 8 letters. Loop has 4 letters. [2021-10-28 09:43:02,201 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:43:02,201 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 4 letters. Loop has 8 letters. [2021-10-28 09:43:02,202 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:43:02,202 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 155 states and 227 transitions. [2021-10-28 09:43:02,206 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 43 [2021-10-28 09:43:02,208 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 155 states to 151 states and 219 transitions. [2021-10-28 09:43:02,208 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 69 [2021-10-28 09:43:02,209 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 78 [2021-10-28 09:43:02,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 151 states and 219 transitions. [2021-10-28 09:43:02,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:43:02,209 INFO L681 BuchiCegarLoop]: Abstraction has 151 states and 219 transitions. [2021-10-28 09:43:02,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states and 219 transitions. [2021-10-28 09:43:02,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 125. [2021-10-28 09:43:02,219 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) [2021-10-28 09:43:02,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 189 transitions. [2021-10-28 09:43:02,221 INFO L704 BuchiCegarLoop]: Abstraction has 125 states and 189 transitions. [2021-10-28 09:43:02,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:43:02,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:43:02,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:43:02,222 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) [2021-10-28 09:43:02,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:43:02,230 INFO L93 Difference]: Finished difference Result 97 states and 129 transitions. [2021-10-28 09:43:02,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:43:02,231 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 97 states and 129 transitions. [2021-10-28 09:43:02,233 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 22 [2021-10-28 09:43:02,234 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 97 states to 83 states and 115 transitions. [2021-10-28 09:43:02,234 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2021-10-28 09:43:02,234 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 39 [2021-10-28 09:43:02,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 83 states and 115 transitions. [2021-10-28 09:43:02,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:43:02,235 INFO L681 BuchiCegarLoop]: Abstraction has 83 states and 115 transitions. [2021-10-28 09:43:02,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states and 115 transitions. [2021-10-28 09:43:02,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 78. [2021-10-28 09:43:02,240 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) [2021-10-28 09:43:02,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 110 transitions. [2021-10-28 09:43:02,241 INFO L704 BuchiCegarLoop]: Abstraction has 78 states and 110 transitions. [2021-10-28 09:43:02,241 INFO L587 BuchiCegarLoop]: Abstraction has 78 states and 110 transitions. [2021-10-28 09:43:02,241 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-10-28 09:43:02,241 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 78 states and 110 transitions. [2021-10-28 09:43:02,243 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 21 [2021-10-28 09:43:02,243 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:43:02,243 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:43:02,243 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2021-10-28 09:43:02,243 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-28 09:43:02,244 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 [2021-10-28 09:43:02,244 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 [2021-10-28 09:43:02,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:02,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1363918578, now seen corresponding path program 1 times [2021-10-28 09:43:02,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:02,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524491402] [2021-10-28 09:43:02,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:02,245 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:02,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:02,265 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:43:02,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:43:02,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524491402] [2021-10-28 09:43:02,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524491402] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:43:02,266 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:43:02,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:43:02,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104669376] [2021-10-28 09:43:02,267 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:43:02,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:02,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1575402, now seen corresponding path program 2 times [2021-10-28 09:43:02,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:02,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375800696] [2021-10-28 09:43:02,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:02,268 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:02,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:02,273 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:43:02,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:02,277 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:43:02,312 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:43:02,312 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:43:02,312 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:43:02,312 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:43:02,312 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:43:02,312 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:02,312 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:43:02,313 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:43:02,313 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration7_Loop [2021-10-28 09:43:02,313 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:43:02,313 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:43:02,314 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:02,319 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:02,321 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:02,328 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:02,371 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:43:02,371 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:43:02,371 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:02,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:02,379 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:02,384 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:43:02,384 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:43:02,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-10-28 09:43:02,407 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:43:02,408 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: [] [2021-10-28 09:43:02,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:02,444 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:02,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:02,445 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:02,447 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:43:02,447 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:43:02,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-10-28 09:43:02,471 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:43:02,471 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_9=1} Honda state: {v_rep~unnamed0~0~true_9=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:43:02,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:02,508 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:02,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:02,509 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:02,512 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:43:02,512 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:43:02,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-10-28 09:43:02,539 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:43:02,539 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: [] [2021-10-28 09:43:02,562 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Ended with exit code 0 [2021-10-28 09:43:02,563 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:02,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:02,563 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:02,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-10-28 09:43:02,570 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:43:02,570 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:43:02,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:02,608 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:02,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:02,609 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:02,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-10-28 09:43:02,631 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:43:02,631 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:43:02,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:02,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:02,745 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:43:02,747 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2021-10-28 09:43:02,747 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:43:02,747 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:43:02,747 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:43:02,747 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:43:02,747 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:43:02,747 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:02,748 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:43:02,748 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:43:02,748 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration7_Loop [2021-10-28 09:43:02,748 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:43:02,748 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:43:02,749 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:02,760 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:02,764 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:02,767 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:02,811 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:43:02,812 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:43:02,812 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:02,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:02,819 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:02,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-10-28 09:43:02,821 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 [2021-10-28 09:43:02,828 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:43:02,828 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:43:02,828 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:43:02,828 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:43:02,830 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:43:02,831 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:43:02,842 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:43:02,874 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2021-10-28 09:43:02,875 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:02,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:02,876 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:02,877 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 [2021-10-28 09:43:02,886 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:43:02,886 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:43:02,887 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:43:02,887 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:43:02,887 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:43:02,888 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:43:02,888 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:43:02,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-10-28 09:43:02,898 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:43:02,921 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2021-10-28 09:43:02,921 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:02,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:02,926 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:02,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-10-28 09:43:02,928 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 [2021-10-28 09:43:02,935 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:43:02,935 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:43:02,935 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:43:02,935 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:43:02,937 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:43:02,937 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:43:02,947 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:43:02,974 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2021-10-28 09:43:02,974 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:02,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:02,975 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:02,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2021-10-28 09:43:02,977 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 [2021-10-28 09:43:02,990 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:43:02,990 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:43:02,991 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:43:02,991 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:43:02,991 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:43:02,991 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:43:02,992 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:43:02,995 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:43:02,997 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-28 09:43:02,997 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 09:43:02,997 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:02,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:02,998 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:02,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-10-28 09:43:03,000 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:43:03,000 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:43:03,000 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:43:03,000 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-28 09:43:03,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:03,019 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:43:03,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:03,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:03,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:43:03,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:03,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:03,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:43:03,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:03,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:43:03,085 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 [2021-10-28 09:43:03,086 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) [2021-10-28 09:43:03,113 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. [2021-10-28 09:43:03,118 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 [2021-10-28 09:43:03,118 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) [2021-10-28 09:43:03,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2021-10-28 09:43:03,119 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 4 letters. [2021-10-28 09:43:03,119 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:43:03,119 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 11 letters. Loop has 4 letters. [2021-10-28 09:43:03,119 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:43:03,120 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 8 letters. [2021-10-28 09:43:03,120 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:43:03,120 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 148 states and 199 transitions. [2021-10-28 09:43:03,122 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 25 [2021-10-28 09:43:03,124 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 148 states to 121 states and 162 transitions. [2021-10-28 09:43:03,124 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 45 [2021-10-28 09:43:03,124 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 49 [2021-10-28 09:43:03,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 121 states and 162 transitions. [2021-10-28 09:43:03,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:43:03,125 INFO L681 BuchiCegarLoop]: Abstraction has 121 states and 162 transitions. [2021-10-28 09:43:03,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states and 162 transitions. [2021-10-28 09:43:03,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 101. [2021-10-28 09:43:03,132 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) [2021-10-28 09:43:03,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 140 transitions. [2021-10-28 09:43:03,133 INFO L704 BuchiCegarLoop]: Abstraction has 101 states and 140 transitions. [2021-10-28 09:43:03,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:43:03,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:43:03,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:43:03,134 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) [2021-10-28 09:43:03,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:43:03,164 INFO L93 Difference]: Finished difference Result 135 states and 179 transitions. [2021-10-28 09:43:03,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:43:03,165 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 135 states and 179 transitions. [2021-10-28 09:43:03,167 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 27 [2021-10-28 09:43:03,168 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 135 states to 128 states and 168 transitions. [2021-10-28 09:43:03,168 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 59 [2021-10-28 09:43:03,168 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 59 [2021-10-28 09:43:03,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 128 states and 168 transitions. [2021-10-28 09:43:03,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:43:03,169 INFO L681 BuchiCegarLoop]: Abstraction has 128 states and 168 transitions. [2021-10-28 09:43:03,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states and 168 transitions. [2021-10-28 09:43:03,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 109. [2021-10-28 09:43:03,175 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) [2021-10-28 09:43:03,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 142 transitions. [2021-10-28 09:43:03,176 INFO L704 BuchiCegarLoop]: Abstraction has 109 states and 142 transitions. [2021-10-28 09:43:03,176 INFO L587 BuchiCegarLoop]: Abstraction has 109 states and 142 transitions. [2021-10-28 09:43:03,176 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-10-28 09:43:03,176 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 109 states and 142 transitions. [2021-10-28 09:43:03,177 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 23 [2021-10-28 09:43:03,177 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:43:03,178 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:43:03,178 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2021-10-28 09:43:03,178 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-28 09:43:03,178 INFO L791 eck$LassoCheckResult]: Stem: 1438#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 1439#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 1441#L12 assume !(main_~i~0 >= 10); 1505#L12-2 assume !(main_~i~0 <= 0); 1524#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 1522#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 1471#L12 assume !(main_~i~0 >= 10); 1472#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 1491#L15-1 [2021-10-28 09:43:03,179 INFO L793 eck$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 [2021-10-28 09:43:03,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:03,179 INFO L85 PathProgramCache]: Analyzing trace with hash 670103747, now seen corresponding path program 1 times [2021-10-28 09:43:03,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:03,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565792094] [2021-10-28 09:43:03,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:03,180 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:03,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:03,185 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:43:03,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:03,190 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:43:03,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:03,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1678390, now seen corresponding path program 2 times [2021-10-28 09:43:03,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:03,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369384336] [2021-10-28 09:43:03,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:03,191 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:03,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:03,195 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:43:03,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:03,198 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:43:03,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:03,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1635542008, now seen corresponding path program 1 times [2021-10-28 09:43:03,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:03,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036659761] [2021-10-28 09:43:03,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:03,199 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:03,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:03,221 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 09:43:03,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:43:03,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036659761] [2021-10-28 09:43:03,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036659761] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:43:03,221 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:43:03,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:43:03,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066339061] [2021-10-28 09:43:03,252 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:43:03,252 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:43:03,252 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:43:03,252 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:43:03,252 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:43:03,253 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:03,253 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:43:03,253 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:43:03,253 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration8_Loop [2021-10-28 09:43:03,253 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:43:03,253 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:43:03,255 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:03,261 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:03,263 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:03,266 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:03,304 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:43:03,304 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:43:03,304 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:03,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:03,305 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:03,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-10-28 09:43:03,306 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:43:03,307 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:43:03,326 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:43:03,326 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: [] [2021-10-28 09:43:03,352 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2021-10-28 09:43:03,352 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:03,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:03,353 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:03,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-10-28 09:43:03,355 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:43:03,355 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:43:03,368 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:43:03,368 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: [] [2021-10-28 09:43:03,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:03,387 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:03,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:03,388 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:03,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-10-28 09:43:03,389 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:43:03,389 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:43:03,404 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:43:03,404 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: [] [2021-10-28 09:43:03,422 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Ended with exit code 0 [2021-10-28 09:43:03,424 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:03,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:03,424 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:03,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-10-28 09:43:03,426 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:43:03,426 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:43:03,452 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Ended with exit code 0 [2021-10-28 09:43:03,452 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:03,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:03,453 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:03,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2021-10-28 09:43:03,463 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:43:03,463 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:43:03,509 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:43:03,511 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Ended with exit code 0 [2021-10-28 09:43:03,511 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:43:03,511 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:43:03,512 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:43:03,512 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:43:03,512 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:43:03,512 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:03,512 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:43:03,512 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:43:03,512 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration8_Loop [2021-10-28 09:43:03,512 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:43:03,512 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:43:03,513 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:03,517 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:03,519 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:03,521 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:03,573 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:43:03,574 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:43:03,574 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:03,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:03,575 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:03,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-10-28 09:43:03,582 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 [2021-10-28 09:43:03,589 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:43:03,589 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:43:03,589 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:43:03,589 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:43:03,589 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:43:03,590 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:43:03,590 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:43:03,614 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:43:03,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:03,648 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:03,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:03,649 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:03,655 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 [2021-10-28 09:43:03,664 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:43:03,664 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:43:03,664 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:43:03,664 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:43:03,667 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:43:03,667 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:43:03,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-10-28 09:43:03,690 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:43:03,712 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Ended with exit code 0 [2021-10-28 09:43:03,713 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:03,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:03,714 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:03,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-10-28 09:43:03,715 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 [2021-10-28 09:43:03,725 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:43:03,725 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:43:03,725 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:43:03,725 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:43:03,727 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:43:03,727 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:43:03,764 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:43:03,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:03,796 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:03,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:03,797 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:03,807 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 [2021-10-28 09:43:03,816 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:43:03,816 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:43:03,816 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:43:03,816 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:43:03,817 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:43:03,817 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:43:03,818 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:43:03,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-10-28 09:43:03,825 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:43:03,828 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 09:43:03,828 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 09:43:03,828 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:03,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:03,829 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:03,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2021-10-28 09:43:03,831 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:43:03,831 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:43:03,831 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:43:03,831 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-28 09:43:03,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:03,867 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:43:03,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:03,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:03,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:43:03,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:03,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:03,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:43:03,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:03,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:43:03,939 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 [2021-10-28 09:43:03,939 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) [2021-10-28 09:43:03,974 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. [2021-10-28 09:43:03,975 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 [2021-10-28 09:43:03,975 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) [2021-10-28 09:43:03,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2021-10-28 09:43:03,975 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 8 letters. Loop has 4 letters. [2021-10-28 09:43:03,976 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:43:03,976 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 12 letters. Loop has 4 letters. [2021-10-28 09:43:03,976 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:43:03,976 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 8 letters. Loop has 8 letters. [2021-10-28 09:43:03,976 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:43:03,977 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 215 states and 277 transitions. [2021-10-28 09:43:03,979 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 32 [2021-10-28 09:43:03,981 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 215 states to 187 states and 239 transitions. [2021-10-28 09:43:03,981 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 69 [2021-10-28 09:43:03,981 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 74 [2021-10-28 09:43:03,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 187 states and 239 transitions. [2021-10-28 09:43:03,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:43:03,982 INFO L681 BuchiCegarLoop]: Abstraction has 187 states and 239 transitions. [2021-10-28 09:43:03,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states and 239 transitions. [2021-10-28 09:43:03,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 167. [2021-10-28 09:43:03,990 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) [2021-10-28 09:43:03,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 218 transitions. [2021-10-28 09:43:03,991 INFO L704 BuchiCegarLoop]: Abstraction has 167 states and 218 transitions. [2021-10-28 09:43:03,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:43:03,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:43:03,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:43:03,992 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) [2021-10-28 09:43:04,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:43:04,010 INFO L93 Difference]: Finished difference Result 162 states and 201 transitions. [2021-10-28 09:43:04,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:43:04,011 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 162 states and 201 transitions. [2021-10-28 09:43:04,013 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 28 [2021-10-28 09:43:04,014 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 162 states to 110 states and 138 transitions. [2021-10-28 09:43:04,014 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 61 [2021-10-28 09:43:04,014 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 64 [2021-10-28 09:43:04,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 110 states and 138 transitions. [2021-10-28 09:43:04,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:43:04,015 INFO L681 BuchiCegarLoop]: Abstraction has 110 states and 138 transitions. [2021-10-28 09:43:04,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states and 138 transitions. [2021-10-28 09:43:04,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 83. [2021-10-28 09:43:04,018 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) [2021-10-28 09:43:04,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 103 transitions. [2021-10-28 09:43:04,019 INFO L704 BuchiCegarLoop]: Abstraction has 83 states and 103 transitions. [2021-10-28 09:43:04,019 INFO L587 BuchiCegarLoop]: Abstraction has 83 states and 103 transitions. [2021-10-28 09:43:04,019 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-10-28 09:43:04,019 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 83 states and 103 transitions. [2021-10-28 09:43:04,020 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2021-10-28 09:43:04,020 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:43:04,020 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:43:04,021 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1] [2021-10-28 09:43:04,021 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [3, 2, 2, 2, 1, 1, 1] [2021-10-28 09:43:04,021 INFO L791 eck$LassoCheckResult]: Stem: 2157#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 2158#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2171#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 2174#L12-2 assume !(main_~i~0 <= 0); 2173#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 2170#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2161#L12 assume !(main_~i~0 >= 10); 2162#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 2218#L15-1 [2021-10-28 09:43:04,022 INFO L793 eck$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 [2021-10-28 09:43:04,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:04,022 INFO L85 PathProgramCache]: Analyzing trace with hash 612845445, now seen corresponding path program 1 times [2021-10-28 09:43:04,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:04,022 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116872180] [2021-10-28 09:43:04,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:04,023 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:04,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:04,042 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:43:04,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:43:04,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116872180] [2021-10-28 09:43:04,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116872180] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:43:04,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200604512] [2021-10-28 09:43:04,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:04,043 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:43:04,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:04,044 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:43:04,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2021-10-28 09:43:04,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:04,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 09:43:04,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:04,106 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:43:04,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200604512] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:43:04,106 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:43:04,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-10-28 09:43:04,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962940032] [2021-10-28 09:43:04,107 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:43:04,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:04,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1192554916, now seen corresponding path program 1 times [2021-10-28 09:43:04,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:04,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201980205] [2021-10-28 09:43:04,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:04,108 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:04,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:04,155 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-28 09:43:04,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:43:04,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201980205] [2021-10-28 09:43:04,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201980205] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:43:04,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626358023] [2021-10-28 09:43:04,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:04,156 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:43:04,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:04,174 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:43:04,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:04,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2021-10-28 09:43:04,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:04,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:04,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 09:43:04,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:04,275 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-28 09:43:04,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626358023] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:43:04,276 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:43:04,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-10-28 09:43:04,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147136791] [2021-10-28 09:43:04,276 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:43:04,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:43:04,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:43:04,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:43:04,277 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) [2021-10-28 09:43:04,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:43:04,297 INFO L93 Difference]: Finished difference Result 87 states and 106 transitions. [2021-10-28 09:43:04,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:43:04,299 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 87 states and 106 transitions. [2021-10-28 09:43:04,300 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 21 [2021-10-28 09:43:04,301 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 87 states to 80 states and 98 transitions. [2021-10-28 09:43:04,301 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 43 [2021-10-28 09:43:04,301 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2021-10-28 09:43:04,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 98 transitions. [2021-10-28 09:43:04,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:43:04,301 INFO L681 BuchiCegarLoop]: Abstraction has 80 states and 98 transitions. [2021-10-28 09:43:04,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states and 98 transitions. [2021-10-28 09:43:04,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 68. [2021-10-28 09:43:04,304 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) [2021-10-28 09:43:04,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 84 transitions. [2021-10-28 09:43:04,305 INFO L704 BuchiCegarLoop]: Abstraction has 68 states and 84 transitions. [2021-10-28 09:43:04,305 INFO L587 BuchiCegarLoop]: Abstraction has 68 states and 84 transitions. [2021-10-28 09:43:04,305 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-10-28 09:43:04,305 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 68 states and 84 transitions. [2021-10-28 09:43:04,306 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-10-28 09:43:04,306 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:43:04,306 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:43:04,306 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 1, 1, 1, 1, 1] [2021-10-28 09:43:04,306 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-28 09:43:04,307 INFO L791 eck$LassoCheckResult]: Stem: 2390#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 2391#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2407#L12 assume !(main_~i~0 >= 10); 2408#L12-2 assume !(main_~i~0 <= 0); 2447#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 2445#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2443#L12 assume !(main_~i~0 >= 10); 2440#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 2437#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 2434#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2414#L12 assume !(main_~i~0 >= 10); 2415#L12-2 [2021-10-28 09:43:04,307 INFO L793 eck$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 [2021-10-28 09:43:04,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:04,307 INFO L85 PathProgramCache]: Analyzing trace with hash 52759419, now seen corresponding path program 2 times [2021-10-28 09:43:04,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:04,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300648845] [2021-10-28 09:43:04,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:04,308 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:04,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:04,313 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:43:04,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:04,318 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:43:04,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:04,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1573482, now seen corresponding path program 2 times [2021-10-28 09:43:04,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:04,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414516955] [2021-10-28 09:43:04,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:04,320 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:04,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:04,323 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:43:04,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:04,326 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:43:04,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:04,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1971928860, now seen corresponding path program 3 times [2021-10-28 09:43:04,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:04,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715250232] [2021-10-28 09:43:04,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:04,327 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:04,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:04,332 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:43:04,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:04,338 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:43:04,364 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:43:04,365 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:43:04,365 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:43:04,365 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:43:04,365 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:43:04,365 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:04,365 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:43:04,365 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:43:04,366 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration10_Loop [2021-10-28 09:43:04,366 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:43:04,366 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:43:04,367 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:04,369 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:04,371 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:04,377 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:04,409 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:43:04,410 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:43:04,410 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:04,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:04,411 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:04,418 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:43:04,418 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:43:04,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2021-10-28 09:43:04,441 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:43:04,441 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: [] [2021-10-28 09:43:04,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:04,474 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:04,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:04,479 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:04,483 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:43:04,483 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:43:04,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2021-10-28 09:43:04,503 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:43:04,503 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: [] [2021-10-28 09:43:04,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:04,535 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:04,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:04,536 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:04,538 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:43:04,538 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:43:04,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2021-10-28 09:43:04,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:04,595 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:04,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:04,596 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:04,597 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:43:04,597 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:43:04,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2021-10-28 09:43:04,656 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:43:04,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:04,659 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:43:04,659 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:43:04,659 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:43:04,659 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:43:04,659 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:43:04,659 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:04,659 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:43:04,659 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:43:04,659 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration10_Loop [2021-10-28 09:43:04,659 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:43:04,659 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:43:04,660 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:04,663 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:04,668 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:04,671 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:04,705 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:43:04,705 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:43:04,705 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:04,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:04,706 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:04,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2021-10-28 09:43:04,714 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 [2021-10-28 09:43:04,721 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:43:04,721 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:43:04,721 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:43:04,721 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:43:04,721 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:43:04,722 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:43:04,722 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:43:04,734 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:43:04,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:04,753 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:04,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:04,754 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:04,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2021-10-28 09:43:04,755 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 [2021-10-28 09:43:04,762 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:43:04,762 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:43:04,762 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:43:04,762 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:43:04,762 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:43:04,763 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:43:04,763 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:43:04,765 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:43:04,766 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 09:43:04,766 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 09:43:04,766 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:04,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:04,767 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:04,769 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:43:04,769 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:43:04,769 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:43:04,769 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 17 Supporting invariants [] [2021-10-28 09:43:04,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2021-10-28 09:43:04,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:04,790 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:43:04,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:04,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:04,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:43:04,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:04,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:04,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:43:04,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:04,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:43:04,870 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 [2021-10-28 09:43:04,871 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) [2021-10-28 09:43:04,916 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. [2021-10-28 09:43:04,917 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 [2021-10-28 09:43:04,917 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) [2021-10-28 09:43:04,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2021-10-28 09:43:04,917 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 11 letters. Loop has 4 letters. [2021-10-28 09:43:04,918 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:43:04,918 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 09:43:04,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:04,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:04,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:43:04,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:04,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:04,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:43:04,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:04,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:43:04,987 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 [2021-10-28 09:43:04,988 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) [2021-10-28 09:43:05,020 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. [2021-10-28 09:43:05,020 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 [2021-10-28 09:43:05,020 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) [2021-10-28 09:43:05,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2021-10-28 09:43:05,021 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 11 letters. Loop has 4 letters. [2021-10-28 09:43:05,021 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:43:05,021 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 09:43:05,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:05,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:05,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:43:05,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:05,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:05,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:43:05,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:05,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:43:05,092 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 [2021-10-28 09:43:05,092 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) [2021-10-28 09:43:05,127 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. [2021-10-28 09:43:05,128 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 [2021-10-28 09:43:05,129 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) [2021-10-28 09:43:05,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2021-10-28 09:43:05,129 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 11 letters. Loop has 4 letters. [2021-10-28 09:43:05,129 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:43:05,130 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 15 letters. Loop has 4 letters. [2021-10-28 09:43:05,130 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:43:05,130 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 11 letters. Loop has 8 letters. [2021-10-28 09:43:05,130 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:43:05,130 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 123 states and 147 transitions. [2021-10-28 09:43:05,132 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 26 [2021-10-28 09:43:05,133 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 123 states to 88 states and 106 transitions. [2021-10-28 09:43:05,133 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2021-10-28 09:43:05,133 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2021-10-28 09:43:05,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 106 transitions. [2021-10-28 09:43:05,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:43:05,133 INFO L681 BuchiCegarLoop]: Abstraction has 88 states and 106 transitions. [2021-10-28 09:43:05,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states and 106 transitions. [2021-10-28 09:43:05,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 55. [2021-10-28 09:43:05,135 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) [2021-10-28 09:43:05,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 69 transitions. [2021-10-28 09:43:05,136 INFO L704 BuchiCegarLoop]: Abstraction has 55 states and 69 transitions. [2021-10-28 09:43:05,136 INFO L587 BuchiCegarLoop]: Abstraction has 55 states and 69 transitions. [2021-10-28 09:43:05,136 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-10-28 09:43:05,136 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 55 states and 69 transitions. [2021-10-28 09:43:05,137 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-10-28 09:43:05,137 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:43:05,137 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:43:05,138 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 3, 2, 1, 1, 1, 1] [2021-10-28 09:43:05,138 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [4, 3, 3, 2, 2, 1, 1] [2021-10-28 09:43:05,138 INFO L791 eck$LassoCheckResult]: Stem: 2975#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 2976#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3010#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 3012#L12-2 assume !(main_~i~0 <= 0); 3011#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3009#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3008#L12 assume !(main_~i~0 >= 10); 3007#L12-2 assume !(main_~i~0 <= 0); 3005#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3003#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3001#L12 assume !(main_~i~0 >= 10); 2988#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 2994#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 2997#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2995#L12 assume !(main_~i~0 >= 10); 2993#L12-2 assume !(main_~i~0 <= 0); 2981#L15-1 [2021-10-28 09:43:05,138 INFO L793 eck$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 [2021-10-28 09:43:05,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:05,139 INFO L85 PathProgramCache]: Analyzing trace with hash -120270543, now seen corresponding path program 1 times [2021-10-28 09:43:05,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:05,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749381201] [2021-10-28 09:43:05,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:05,140 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:05,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:05,167 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:43:05,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:43:05,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749381201] [2021-10-28 09:43:05,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749381201] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:43:05,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450046268] [2021-10-28 09:43:05,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:05,168 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:43:05,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:05,175 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:43:05,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2021-10-28 09:43:05,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:05,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:43:05,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:05,279 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:43:05,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450046268] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:43:05,279 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:43:05,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-10-28 09:43:05,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465012593] [2021-10-28 09:43:05,280 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:43:05,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:05,280 INFO L85 PathProgramCache]: Analyzing trace with hash 511811097, now seen corresponding path program 2 times [2021-10-28 09:43:05,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:05,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496117819] [2021-10-28 09:43:05,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:05,281 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:05,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:05,308 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:43:05,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:43:05,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496117819] [2021-10-28 09:43:05,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496117819] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:43:05,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892214329] [2021-10-28 09:43:05,311 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:43:05,311 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:43:05,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:05,324 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:43:05,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2021-10-28 09:43:05,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:43:05,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:43:05,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:43:05,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:05,454 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:43:05,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892214329] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:43:05,454 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:43:05,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-10-28 09:43:05,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47826709] [2021-10-28 09:43:05,455 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:43:05,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:43:05,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:43:05,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:43:05,456 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) [2021-10-28 09:43:05,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:05,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:43:05,485 INFO L93 Difference]: Finished difference Result 81 states and 100 transitions. [2021-10-28 09:43:05,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:43:05,486 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 81 states and 100 transitions. [2021-10-28 09:43:05,486 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 21 [2021-10-28 09:43:05,487 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 81 states to 79 states and 97 transitions. [2021-10-28 09:43:05,487 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2021-10-28 09:43:05,487 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2021-10-28 09:43:05,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 79 states and 97 transitions. [2021-10-28 09:43:05,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:43:05,488 INFO L681 BuchiCegarLoop]: Abstraction has 79 states and 97 transitions. [2021-10-28 09:43:05,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states and 97 transitions. [2021-10-28 09:43:05,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 66. [2021-10-28 09:43:05,490 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) [2021-10-28 09:43:05,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 82 transitions. [2021-10-28 09:43:05,490 INFO L704 BuchiCegarLoop]: Abstraction has 66 states and 82 transitions. [2021-10-28 09:43:05,490 INFO L587 BuchiCegarLoop]: Abstraction has 66 states and 82 transitions. [2021-10-28 09:43:05,490 INFO L425 BuchiCegarLoop]: ======== Iteration 12============ [2021-10-28 09:43:05,491 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 66 states and 82 transitions. [2021-10-28 09:43:05,491 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 20 [2021-10-28 09:43:05,491 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:43:05,491 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:43:05,492 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 4, 4, 3, 1, 1, 1, 1] [2021-10-28 09:43:05,492 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [5, 4, 4, 3, 2, 1, 1] [2021-10-28 09:43:05,493 INFO L791 eck$LassoCheckResult]: Stem: 3212#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 3213#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3211#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 3267#L12-2 assume !(main_~i~0 <= 0); 3266#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3265#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3214#L12 assume !(main_~i~0 >= 10); 3215#L12-2 assume !(main_~i~0 <= 0); 3269#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3268#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3216#L12 assume !(main_~i~0 >= 10); 3217#L12-2 assume !(main_~i~0 <= 0); 3258#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3255#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3256#L12 assume !(main_~i~0 >= 10); 3235#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 3227#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 3228#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3223#L12 assume !(main_~i~0 >= 10); 3224#L12-2 assume !(main_~i~0 <= 0); 3218#L15-1 [2021-10-28 09:43:05,493 INFO L793 eck$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 [2021-10-28 09:43:05,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:05,493 INFO L85 PathProgramCache]: Analyzing trace with hash -353280474, now seen corresponding path program 2 times [2021-10-28 09:43:05,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:05,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842042955] [2021-10-28 09:43:05,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:05,494 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:05,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:05,527 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:43:05,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:43:05,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842042955] [2021-10-28 09:43:05,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842042955] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:43:05,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901258339] [2021-10-28 09:43:05,528 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:43:05,528 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:43:05,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:05,533 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:43:05,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2021-10-28 09:43:05,608 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:43:05,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:43:05,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:43:05,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:05,672 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:43:05,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901258339] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:43:05,673 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:43:05,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-28 09:43:05,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161558931] [2021-10-28 09:43:05,673 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:43:05,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:05,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1575127282, now seen corresponding path program 3 times [2021-10-28 09:43:05,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:05,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690797050] [2021-10-28 09:43:05,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:05,674 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:05,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:05,714 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 25 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:43:05,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:43:05,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690797050] [2021-10-28 09:43:05,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690797050] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:43:05,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138239283] [2021-10-28 09:43:05,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:43:05,715 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:43:05,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:05,718 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:43:05,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2021-10-28 09:43:05,798 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-28 09:43:05,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:43:05,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:43:05,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:05,852 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 25 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:43:05,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138239283] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:43:05,853 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:43:05,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-28 09:43:05,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946538514] [2021-10-28 09:43:05,854 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:43:05,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:43:05,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:43:05,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:43:05,855 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) [2021-10-28 09:43:05,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:43:05,885 INFO L93 Difference]: Finished difference Result 97 states and 119 transitions. [2021-10-28 09:43:05,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:43:05,885 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 97 states and 119 transitions. [2021-10-28 09:43:05,886 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 25 [2021-10-28 09:43:05,887 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 97 states to 95 states and 116 transitions. [2021-10-28 09:43:05,887 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2021-10-28 09:43:05,888 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2021-10-28 09:43:05,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 95 states and 116 transitions. [2021-10-28 09:43:05,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:43:05,888 INFO L681 BuchiCegarLoop]: Abstraction has 95 states and 116 transitions. [2021-10-28 09:43:05,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states and 116 transitions. [2021-10-28 09:43:05,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 78. [2021-10-28 09:43:05,890 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) [2021-10-28 09:43:05,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 96 transitions. [2021-10-28 09:43:05,891 INFO L704 BuchiCegarLoop]: Abstraction has 78 states and 96 transitions. [2021-10-28 09:43:05,891 INFO L587 BuchiCegarLoop]: Abstraction has 78 states and 96 transitions. [2021-10-28 09:43:05,891 INFO L425 BuchiCegarLoop]: ======== Iteration 13============ [2021-10-28 09:43:05,891 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 78 states and 96 transitions. [2021-10-28 09:43:05,892 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 24 [2021-10-28 09:43:05,892 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:43:05,892 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:43:05,893 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [6, 5, 5, 4, 1, 1, 1, 1] [2021-10-28 09:43:05,894 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [6, 5, 5, 4, 2, 1, 1] [2021-10-28 09:43:05,894 INFO L791 eck$LassoCheckResult]: Stem: 3502#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 3503#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3501#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 3567#L12-2 assume !(main_~i~0 <= 0); 3566#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3565#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3505#L12 assume !(main_~i~0 >= 10); 3506#L12-2 assume !(main_~i~0 <= 0); 3571#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3570#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3507#L12 assume !(main_~i~0 >= 10); 3508#L12-2 assume !(main_~i~0 <= 0); 3569#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3568#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3545#L12 assume !(main_~i~0 >= 10); 3564#L12-2 assume !(main_~i~0 <= 0); 3548#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3544#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3546#L12 assume !(main_~i~0 >= 10); 3523#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 3517#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 3518#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3513#L12 assume !(main_~i~0 >= 10); 3514#L12-2 assume !(main_~i~0 <= 0); 3509#L15-1 [2021-10-28 09:43:05,894 INFO L793 eck$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 [2021-10-28 09:43:05,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:05,895 INFO L85 PathProgramCache]: Analyzing trace with hash 828663963, now seen corresponding path program 3 times [2021-10-28 09:43:05,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:05,895 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195365840] [2021-10-28 09:43:05,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:05,896 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:05,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:05,966 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 27 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:43:05,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:43:05,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195365840] [2021-10-28 09:43:05,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195365840] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:43:05,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054369511] [2021-10-28 09:43:05,967 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:43:05,967 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:43:05,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:05,969 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:43:05,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2021-10-28 09:43:06,055 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-10-28 09:43:06,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:43:06,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 09:43:06,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:06,116 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 27 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:43:06,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054369511] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:43:06,116 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:43:06,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-10-28 09:43:06,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848243440] [2021-10-28 09:43:06,117 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:43:06,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:06,117 INFO L85 PathProgramCache]: Analyzing trace with hash -779498109, now seen corresponding path program 4 times [2021-10-28 09:43:06,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:06,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820269970] [2021-10-28 09:43:06,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:06,118 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:06,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:06,155 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 32 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:43:06,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:43:06,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820269970] [2021-10-28 09:43:06,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820269970] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:43:06,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948662419] [2021-10-28 09:43:06,156 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 09:43:06,157 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:43:06,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:06,158 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:43:06,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2021-10-28 09:43:06,257 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 09:43:06,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:43:06,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 09:43:06,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:06,314 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 32 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:43:06,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948662419] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:43:06,314 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:43:06,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-10-28 09:43:06,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444101199] [2021-10-28 09:43:06,315 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:43:06,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:43:06,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:43:06,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:43:06,316 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) [2021-10-28 09:43:06,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:43:06,350 INFO L93 Difference]: Finished difference Result 113 states and 138 transitions. [2021-10-28 09:43:06,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:43:06,350 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 113 states and 138 transitions. [2021-10-28 09:43:06,352 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 29 [2021-10-28 09:43:06,353 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 113 states to 111 states and 135 transitions. [2021-10-28 09:43:06,353 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 37 [2021-10-28 09:43:06,353 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 37 [2021-10-28 09:43:06,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 111 states and 135 transitions. [2021-10-28 09:43:06,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:43:06,353 INFO L681 BuchiCegarLoop]: Abstraction has 111 states and 135 transitions. [2021-10-28 09:43:06,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states and 135 transitions. [2021-10-28 09:43:06,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 90. [2021-10-28 09:43:06,356 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) [2021-10-28 09:43:06,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 110 transitions. [2021-10-28 09:43:06,356 INFO L704 BuchiCegarLoop]: Abstraction has 90 states and 110 transitions. [2021-10-28 09:43:06,356 INFO L587 BuchiCegarLoop]: Abstraction has 90 states and 110 transitions. [2021-10-28 09:43:06,356 INFO L425 BuchiCegarLoop]: ======== Iteration 14============ [2021-10-28 09:43:06,357 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 90 states and 110 transitions. [2021-10-28 09:43:06,357 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 28 [2021-10-28 09:43:06,357 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:43:06,358 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:43:06,359 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [7, 6, 6, 5, 1, 1, 1, 1] [2021-10-28 09:43:06,359 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [7, 6, 6, 5, 2, 1, 1] [2021-10-28 09:43:06,359 INFO L791 eck$LassoCheckResult]: Stem: 3842#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 3843#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3847#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 3919#L12-2 assume !(main_~i~0 <= 0); 3918#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3917#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3849#L12 assume !(main_~i~0 >= 10); 3850#L12-2 assume !(main_~i~0 <= 0); 3927#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3926#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3851#L12 assume !(main_~i~0 >= 10); 3852#L12-2 assume !(main_~i~0 <= 0); 3925#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3924#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3923#L12 assume !(main_~i~0 >= 10); 3922#L12-2 assume !(main_~i~0 <= 0); 3921#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3920#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3893#L12 assume !(main_~i~0 >= 10); 3916#L12-2 assume !(main_~i~0 <= 0); 3896#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3892#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3894#L12 assume !(main_~i~0 >= 10); 3869#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 3861#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 3862#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3857#L12 assume !(main_~i~0 >= 10); 3858#L12-2 assume !(main_~i~0 <= 0); 3853#L15-1 [2021-10-28 09:43:06,359 INFO L793 eck$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 [2021-10-28 09:43:06,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:06,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1716309872, now seen corresponding path program 4 times [2021-10-28 09:43:06,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:06,360 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274212113] [2021-10-28 09:43:06,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:06,361 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:06,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:06,420 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 33 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:43:06,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:43:06,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274212113] [2021-10-28 09:43:06,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274212113] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:43:06,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601333407] [2021-10-28 09:43:06,421 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 09:43:06,421 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:43:06,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:06,427 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:43:06,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2021-10-28 09:43:06,521 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 09:43:06,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:43:06,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:43:06,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:06,607 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 33 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:43:06,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601333407] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:43:06,608 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:43:06,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-10-28 09:43:06,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744686753] [2021-10-28 09:43:06,609 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:43:06,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:06,609 INFO L85 PathProgramCache]: Analyzing trace with hash 759947640, now seen corresponding path program 5 times [2021-10-28 09:43:06,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:06,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376110111] [2021-10-28 09:43:06,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:06,609 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:06,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:06,653 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 39 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:43:06,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:43:06,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376110111] [2021-10-28 09:43:06,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376110111] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:43:06,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260886747] [2021-10-28 09:43:06,654 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 09:43:06,654 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:43:06,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:06,655 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:43:06,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2021-10-28 09:43:06,750 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-28 09:43:06,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:43:06,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:43:06,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:06,821 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 39 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:43:06,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260886747] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:43:06,821 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:43:06,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-10-28 09:43:06,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202870826] [2021-10-28 09:43:06,822 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:43:06,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:43:06,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:43:06,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:43:06,823 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) [2021-10-28 09:43:06,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:43:06,859 INFO L93 Difference]: Finished difference Result 129 states and 157 transitions. [2021-10-28 09:43:06,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:43:06,860 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 129 states and 157 transitions. [2021-10-28 09:43:06,861 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 33 [2021-10-28 09:43:06,862 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 129 states to 127 states and 154 transitions. [2021-10-28 09:43:06,862 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2021-10-28 09:43:06,862 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2021-10-28 09:43:06,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 127 states and 154 transitions. [2021-10-28 09:43:06,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:43:06,863 INFO L681 BuchiCegarLoop]: Abstraction has 127 states and 154 transitions. [2021-10-28 09:43:06,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states and 154 transitions. [2021-10-28 09:43:06,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 102. [2021-10-28 09:43:06,865 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) [2021-10-28 09:43:06,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 124 transitions. [2021-10-28 09:43:06,866 INFO L704 BuchiCegarLoop]: Abstraction has 102 states and 124 transitions. [2021-10-28 09:43:06,866 INFO L587 BuchiCegarLoop]: Abstraction has 102 states and 124 transitions. [2021-10-28 09:43:06,866 INFO L425 BuchiCegarLoop]: ======== Iteration 15============ [2021-10-28 09:43:06,866 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 102 states and 124 transitions. [2021-10-28 09:43:06,867 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 32 [2021-10-28 09:43:06,867 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:43:06,867 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:43:06,868 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [8, 7, 7, 6, 1, 1, 1, 1] [2021-10-28 09:43:06,868 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [8, 7, 7, 6, 2, 1, 1] [2021-10-28 09:43:06,869 INFO L791 eck$LassoCheckResult]: Stem: 4240#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 4241#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4245#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 4325#L12-2 assume !(main_~i~0 <= 0); 4324#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4323#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4247#L12 assume !(main_~i~0 >= 10); 4248#L12-2 assume !(main_~i~0 <= 0); 4337#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4336#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4249#L12 assume !(main_~i~0 >= 10); 4250#L12-2 assume !(main_~i~0 <= 0); 4335#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4334#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4333#L12 assume !(main_~i~0 >= 10); 4332#L12-2 assume !(main_~i~0 <= 0); 4331#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4330#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4329#L12 assume !(main_~i~0 >= 10); 4328#L12-2 assume !(main_~i~0 <= 0); 4327#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4326#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4295#L12 assume !(main_~i~0 >= 10); 4322#L12-2 assume !(main_~i~0 <= 0); 4298#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4294#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4296#L12 assume !(main_~i~0 >= 10); 4267#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 4259#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 4260#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4255#L12 assume !(main_~i~0 >= 10); 4256#L12-2 assume !(main_~i~0 <= 0); 4251#L15-1 [2021-10-28 09:43:06,869 INFO L793 eck$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 [2021-10-28 09:43:06,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:06,869 INFO L85 PathProgramCache]: Analyzing trace with hash 750974469, now seen corresponding path program 5 times [2021-10-28 09:43:06,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:06,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299490030] [2021-10-28 09:43:06,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:06,870 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:06,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:06,923 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 39 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:43:06,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:43:06,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299490030] [2021-10-28 09:43:06,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299490030] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:43:06,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789641157] [2021-10-28 09:43:06,924 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 09:43:06,924 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:43:06,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:06,927 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:43:06,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2021-10-28 09:43:07,029 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-10-28 09:43:07,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:43:07,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 09:43:07,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:07,129 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 39 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:43:07,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789641157] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:43:07,129 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:43:07,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-10-28 09:43:07,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972634036] [2021-10-28 09:43:07,130 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:43:07,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:07,131 INFO L85 PathProgramCache]: Analyzing trace with hash -246877459, now seen corresponding path program 6 times [2021-10-28 09:43:07,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:07,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624356509] [2021-10-28 09:43:07,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:07,131 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:07,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:07,185 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 46 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:43:07,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:43:07,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624356509] [2021-10-28 09:43:07,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624356509] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:43:07,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199984467] [2021-10-28 09:43:07,186 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-28 09:43:07,187 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:43:07,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:07,188 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:43:07,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2021-10-28 09:43:07,323 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-10-28 09:43:07,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:43:07,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 09:43:07,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:07,438 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 46 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:43:07,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199984467] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:43:07,438 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:43:07,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-10-28 09:43:07,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519668603] [2021-10-28 09:43:07,439 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:43:07,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:43:07,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:43:07,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:43:07,440 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) [2021-10-28 09:43:07,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:43:07,499 INFO L93 Difference]: Finished difference Result 145 states and 176 transitions. [2021-10-28 09:43:07,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:43:07,499 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 145 states and 176 transitions. [2021-10-28 09:43:07,501 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 37 [2021-10-28 09:43:07,502 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 145 states to 143 states and 173 transitions. [2021-10-28 09:43:07,502 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 45 [2021-10-28 09:43:07,503 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 45 [2021-10-28 09:43:07,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 143 states and 173 transitions. [2021-10-28 09:43:07,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:43:07,503 INFO L681 BuchiCegarLoop]: Abstraction has 143 states and 173 transitions. [2021-10-28 09:43:07,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states and 173 transitions. [2021-10-28 09:43:07,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 114. [2021-10-28 09:43:07,506 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) [2021-10-28 09:43:07,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 138 transitions. [2021-10-28 09:43:07,507 INFO L704 BuchiCegarLoop]: Abstraction has 114 states and 138 transitions. [2021-10-28 09:43:07,507 INFO L587 BuchiCegarLoop]: Abstraction has 114 states and 138 transitions. [2021-10-28 09:43:07,507 INFO L425 BuchiCegarLoop]: ======== Iteration 16============ [2021-10-28 09:43:07,507 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 114 states and 138 transitions. [2021-10-28 09:43:07,508 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 36 [2021-10-28 09:43:07,508 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:43:07,509 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:43:07,510 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [9, 8, 8, 7, 1, 1, 1, 1] [2021-10-28 09:43:07,510 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [9, 8, 8, 7, 2, 1, 1] [2021-10-28 09:43:07,510 INFO L791 eck$LassoCheckResult]: Stem: 4696#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 4697#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4695#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 4785#L12-2 assume !(main_~i~0 <= 0); 4784#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4783#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4699#L12 assume !(main_~i~0 >= 10); 4700#L12-2 assume !(main_~i~0 <= 0); 4800#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4798#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4701#L12 assume !(main_~i~0 >= 10); 4702#L12-2 assume !(main_~i~0 <= 0); 4801#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4799#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4797#L12 assume !(main_~i~0 >= 10); 4796#L12-2 assume !(main_~i~0 <= 0); 4795#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4794#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4793#L12 assume !(main_~i~0 >= 10); 4792#L12-2 assume !(main_~i~0 <= 0); 4791#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4790#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4789#L12 assume !(main_~i~0 >= 10); 4788#L12-2 assume !(main_~i~0 <= 0); 4787#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4786#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4750#L12 assume !(main_~i~0 >= 10); 4760#L12-2 assume !(main_~i~0 <= 0); 4753#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4749#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4751#L12 assume !(main_~i~0 >= 10); 4719#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 4711#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 4712#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4707#L12 assume !(main_~i~0 >= 10); 4708#L12-2 assume !(main_~i~0 <= 0); 4703#L15-1 [2021-10-28 09:43:07,511 INFO L793 eck$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 [2021-10-28 09:43:07,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:07,511 INFO L85 PathProgramCache]: Analyzing trace with hash 2128148730, now seen corresponding path program 6 times [2021-10-28 09:43:07,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:07,511 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551556516] [2021-10-28 09:43:07,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:07,512 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:07,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:07,592 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 45 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:43:07,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:43:07,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551556516] [2021-10-28 09:43:07,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551556516] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:43:07,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147632440] [2021-10-28 09:43:07,593 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-28 09:43:07,593 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:43:07,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:07,594 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:43:07,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2021-10-28 09:43:07,722 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-10-28 09:43:07,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:43:07,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 09:43:07,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:07,830 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 45 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:43:07,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147632440] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:43:07,830 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:43:07,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-10-28 09:43:07,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995337783] [2021-10-28 09:43:07,831 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:43:07,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:07,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1690714594, now seen corresponding path program 7 times [2021-10-28 09:43:07,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:07,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568405200] [2021-10-28 09:43:07,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:07,832 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:07,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:07,893 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 53 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:43:07,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:43:07,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568405200] [2021-10-28 09:43:07,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568405200] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:43:07,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413763131] [2021-10-28 09:43:07,894 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-28 09:43:07,894 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:43:07,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:07,899 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:43:07,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2021-10-28 09:43:08,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:08,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 09:43:08,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:08,139 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 53 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:43:08,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413763131] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:43:08,139 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:43:08,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-10-28 09:43:08,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170797927] [2021-10-28 09:43:08,140 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:43:08,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:43:08,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:43:08,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:43:08,141 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) [2021-10-28 09:43:08,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:43:08,197 INFO L93 Difference]: Finished difference Result 161 states and 195 transitions. [2021-10-28 09:43:08,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:43:08,197 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 161 states and 195 transitions. [2021-10-28 09:43:08,199 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 41 [2021-10-28 09:43:08,200 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 161 states to 159 states and 192 transitions. [2021-10-28 09:43:08,200 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 49 [2021-10-28 09:43:08,201 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 49 [2021-10-28 09:43:08,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 159 states and 192 transitions. [2021-10-28 09:43:08,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:43:08,201 INFO L681 BuchiCegarLoop]: Abstraction has 159 states and 192 transitions. [2021-10-28 09:43:08,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states and 192 transitions. [2021-10-28 09:43:08,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 126. [2021-10-28 09:43:08,204 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) [2021-10-28 09:43:08,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 152 transitions. [2021-10-28 09:43:08,206 INFO L704 BuchiCegarLoop]: Abstraction has 126 states and 152 transitions. [2021-10-28 09:43:08,206 INFO L587 BuchiCegarLoop]: Abstraction has 126 states and 152 transitions. [2021-10-28 09:43:08,206 INFO L425 BuchiCegarLoop]: ======== Iteration 17============ [2021-10-28 09:43:08,206 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 126 states and 152 transitions. [2021-10-28 09:43:08,207 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 40 [2021-10-28 09:43:08,207 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:43:08,207 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:43:08,210 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [10, 9, 9, 8, 1, 1, 1, 1] [2021-10-28 09:43:08,210 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [10, 9, 9, 8, 2, 1, 1] [2021-10-28 09:43:08,210 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 [2021-10-28 09:43:08,211 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 [2021-10-28 09:43:08,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:08,211 INFO L85 PathProgramCache]: Analyzing trace with hash -6653585, now seen corresponding path program 7 times [2021-10-28 09:43:08,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:08,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534054876] [2021-10-28 09:43:08,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:08,212 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:08,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:08,310 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 51 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:43:08,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:43:08,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534054876] [2021-10-28 09:43:08,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534054876] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:43:08,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078960095] [2021-10-28 09:43:08,311 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-28 09:43:08,311 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:43:08,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:08,316 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:43:08,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2021-10-28 09:43:08,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:08,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 09:43:08,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:08,587 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 51 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:43:08,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078960095] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:43:08,588 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:43:08,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-10-28 09:43:08,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332995853] [2021-10-28 09:43:08,588 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:43:08,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:08,589 INFO L85 PathProgramCache]: Analyzing trace with hash 711528023, now seen corresponding path program 8 times [2021-10-28 09:43:08,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:08,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747042037] [2021-10-28 09:43:08,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:08,589 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:08,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:08,660 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 60 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:43:08,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:43:08,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747042037] [2021-10-28 09:43:08,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747042037] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:43:08,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33484565] [2021-10-28 09:43:08,661 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:43:08,661 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:43:08,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:08,663 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:43:08,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2021-10-28 09:43:08,847 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:43:08,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:43:08,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 09:43:08,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:08,948 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 60 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:43:08,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33484565] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:43:08,949 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:43:08,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-10-28 09:43:08,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645496974] [2021-10-28 09:43:08,950 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:43:08,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:43:08,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 09:43:08,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:43:08,951 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) [2021-10-28 09:43:09,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:43:09,008 INFO L93 Difference]: Finished difference Result 177 states and 214 transitions. [2021-10-28 09:43:09,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:43:09,009 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 177 states and 214 transitions. [2021-10-28 09:43:09,010 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 45 [2021-10-28 09:43:09,012 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 177 states to 175 states and 211 transitions. [2021-10-28 09:43:09,012 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 53 [2021-10-28 09:43:09,012 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53 [2021-10-28 09:43:09,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 175 states and 211 transitions. [2021-10-28 09:43:09,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:43:09,013 INFO L681 BuchiCegarLoop]: Abstraction has 175 states and 211 transitions. [2021-10-28 09:43:09,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states and 211 transitions. [2021-10-28 09:43:09,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 138. [2021-10-28 09:43:09,016 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) [2021-10-28 09:43:09,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 166 transitions. [2021-10-28 09:43:09,018 INFO L704 BuchiCegarLoop]: Abstraction has 138 states and 166 transitions. [2021-10-28 09:43:09,018 INFO L587 BuchiCegarLoop]: Abstraction has 138 states and 166 transitions. [2021-10-28 09:43:09,018 INFO L425 BuchiCegarLoop]: ======== Iteration 18============ [2021-10-28 09:43:09,019 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 138 states and 166 transitions. [2021-10-28 09:43:09,019 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 44 [2021-10-28 09:43:09,020 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:43:09,020 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:43:09,022 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 9, 1, 1, 1, 1] [2021-10-28 09:43:09,022 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [11, 10, 10, 9, 2, 1, 1] [2021-10-28 09:43:09,023 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 [2021-10-28 09:43:09,024 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 [2021-10-28 09:43:09,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:09,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1242347364, now seen corresponding path program 8 times [2021-10-28 09:43:09,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:09,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242426933] [2021-10-28 09:43:09,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:09,025 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:09,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:09,114 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 57 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:43:09,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:43:09,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242426933] [2021-10-28 09:43:09,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242426933] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:43:09,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263230875] [2021-10-28 09:43:09,114 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:43:09,115 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:43:09,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:09,116 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:43:09,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2021-10-28 09:43:09,288 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:43:09,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:43:09,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 09:43:09,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:09,452 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 57 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:43:09,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263230875] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:43:09,452 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:43:09,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2021-10-28 09:43:09,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366307513] [2021-10-28 09:43:09,453 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:43:09,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:09,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1875470260, now seen corresponding path program 9 times [2021-10-28 09:43:09,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:09,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955430734] [2021-10-28 09:43:09,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:09,454 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:09,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:09,554 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 67 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:43:09,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:43:09,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955430734] [2021-10-28 09:43:09,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955430734] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:43:09,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568896216] [2021-10-28 09:43:09,555 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:43:09,555 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:43:09,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:09,563 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:43:09,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2021-10-28 09:43:09,746 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-10-28 09:43:09,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:43:09,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 09:43:09,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:09,891 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 67 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:43:09,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568896216] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:43:09,892 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:43:09,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2021-10-28 09:43:09,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672448883] [2021-10-28 09:43:09,893 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:43:09,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:43:09,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 09:43:09,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:43:09,894 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) [2021-10-28 09:43:09,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:43:09,992 INFO L93 Difference]: Finished difference Result 307 states and 361 transitions. [2021-10-28 09:43:09,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:43:09,993 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 307 states and 361 transitions. [2021-10-28 09:43:09,996 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 104 [2021-10-28 09:43:09,999 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 307 states to 299 states and 352 transitions. [2021-10-28 09:43:09,999 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 104 [2021-10-28 09:43:09,999 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 176 [2021-10-28 09:43:09,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 299 states and 352 transitions. [2021-10-28 09:43:10,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:43:10,000 INFO L681 BuchiCegarLoop]: Abstraction has 299 states and 352 transitions. [2021-10-28 09:43:10,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states and 352 transitions. [2021-10-28 09:43:10,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 214. [2021-10-28 09:43:10,005 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) [2021-10-28 09:43:10,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 258 transitions. [2021-10-28 09:43:10,007 INFO L704 BuchiCegarLoop]: Abstraction has 214 states and 258 transitions. [2021-10-28 09:43:10,007 INFO L587 BuchiCegarLoop]: Abstraction has 214 states and 258 transitions. [2021-10-28 09:43:10,007 INFO L425 BuchiCegarLoop]: ======== Iteration 19============ [2021-10-28 09:43:10,008 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 214 states and 258 transitions. [2021-10-28 09:43:10,009 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 80 [2021-10-28 09:43:10,009 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:43:10,009 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:43:10,011 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 10, 1, 1, 1] [2021-10-28 09:43:10,011 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [12, 11, 11, 10, 2, 1, 1] [2021-10-28 09:43:10,012 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 [2021-10-28 09:43:10,012 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 [2021-10-28 09:43:10,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:10,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1244253986, now seen corresponding path program 2 times [2021-10-28 09:43:10,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:10,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329695157] [2021-10-28 09:43:10,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:10,013 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:10,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:10,022 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:43:10,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:10,036 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:43:10,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:10,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1107487295, now seen corresponding path program 10 times [2021-10-28 09:43:10,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:10,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326975591] [2021-10-28 09:43:10,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:10,037 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:10,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:10,045 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:43:10,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:10,053 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:43:10,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:10,053 INFO L85 PathProgramCache]: Analyzing trace with hash -429277470, now seen corresponding path program 9 times [2021-10-28 09:43:10,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:10,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263550304] [2021-10-28 09:43:10,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:10,055 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:10,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:10,138 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 587 proven. 3 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-28 09:43:10,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:43:10,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263550304] [2021-10-28 09:43:10,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263550304] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:43:10,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572515668] [2021-10-28 09:43:10,139 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:43:10,139 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:43:10,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:10,141 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:43:10,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2021-10-28 09:43:10,351 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2021-10-28 09:43:10,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:43:10,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:43:10,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:10,537 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 587 proven. 3 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-28 09:43:10,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572515668] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:43:10,537 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:43:10,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-10-28 09:43:10,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532800111] [2021-10-28 09:43:10,766 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:43:10,766 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:43:10,766 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:43:10,766 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:43:10,766 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:43:10,766 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:10,766 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:43:10,766 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:43:10,766 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration19_Loop [2021-10-28 09:43:10,766 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:43:10,766 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:43:10,767 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:10,770 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:10,772 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:10,776 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:10,818 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:43:10,819 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:43:10,819 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:10,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:10,823 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:10,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Waiting until timeout for monitored process [2021-10-28 09:43:10,829 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:43:10,829 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:43:10,841 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:43:10,841 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: [] [2021-10-28 09:43:10,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:10,860 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:10,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:10,861 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:10,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Waiting until timeout for monitored process [2021-10-28 09:43:10,862 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:43:10,862 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:43:10,874 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:43:10,874 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: [] [2021-10-28 09:43:10,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:10,893 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:10,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:10,894 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:10,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Waiting until timeout for monitored process [2021-10-28 09:43:10,895 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:43:10,895 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:43:10,903 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:43:10,903 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: [] [2021-10-28 09:43:10,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:10,922 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:10,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:10,923 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:10,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Waiting until timeout for monitored process [2021-10-28 09:43:10,934 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:43:10,934 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:43:10,960 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Ended with exit code 0 [2021-10-28 09:43:10,960 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:10,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:10,961 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:10,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Waiting until timeout for monitored process [2021-10-28 09:43:10,962 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:43:10,962 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:43:11,025 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:43:11,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:11,027 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:43:11,027 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:43:11,027 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:43:11,027 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:43:11,028 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:43:11,028 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:11,028 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:43:11,028 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:43:11,028 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration19_Loop [2021-10-28 09:43:11,028 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:43:11,028 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:43:11,028 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:11,035 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:11,039 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:11,045 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:11,086 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:43:11,087 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:43:11,087 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:11,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:11,087 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:11,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Waiting until timeout for monitored process [2021-10-28 09:43:11,089 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 [2021-10-28 09:43:11,095 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:43:11,095 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:43:11,096 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:43:11,096 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:43:11,097 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:43:11,097 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:43:11,103 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:43:11,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:11,122 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:11,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:11,123 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:11,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (83)] Waiting until timeout for monitored process [2021-10-28 09:43:11,125 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 [2021-10-28 09:43:11,132 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:43:11,132 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:43:11,132 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:43:11,132 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:43:11,132 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:43:11,133 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:43:11,133 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:43:11,134 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:43:11,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (83)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:11,154 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:11,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:11,154 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:11,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (84)] Waiting until timeout for monitored process [2021-10-28 09:43:11,155 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 [2021-10-28 09:43:11,162 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:43:11,162 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:43:11,162 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:43:11,163 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:43:11,163 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:43:11,163 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:43:11,163 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:43:11,165 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:43:11,167 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 09:43:11,167 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 09:43:11,167 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:11,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:11,170 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:11,170 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:43:11,170 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:43:11,171 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:43:11,171 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-28 09:43:11,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (85)] Waiting until timeout for monitored process [2021-10-28 09:43:11,190 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (84)] Ended with exit code 0 [2021-10-28 09:43:11,190 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:43:11,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:11,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:11,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:43:11,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:11,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:11,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 09:43:11,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:11,478 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-28 09:43:11,478 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 [2021-10-28 09:43:11,479 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) [2021-10-28 09:43:11,579 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. [2021-10-28 09:43:11,579 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 [2021-10-28 09:43:11,579 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) [2021-10-28 09:43:11,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 36 transitions. [2021-10-28 09:43:11,580 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 36 transitions. Stem has 44 letters. Loop has 48 letters. [2021-10-28 09:43:11,584 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:43:11,584 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 36 transitions. Stem has 92 letters. Loop has 48 letters. [2021-10-28 09:43:11,585 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:43:11,585 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 36 transitions. Stem has 44 letters. Loop has 96 letters. [2021-10-28 09:43:11,586 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:43:11,586 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 493 states and 601 transitions. [2021-10-28 09:43:11,590 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 84 [2021-10-28 09:43:11,593 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 493 states to 439 states and 521 transitions. [2021-10-28 09:43:11,593 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 178 [2021-10-28 09:43:11,594 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 183 [2021-10-28 09:43:11,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 439 states and 521 transitions. [2021-10-28 09:43:11,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:43:11,594 INFO L681 BuchiCegarLoop]: Abstraction has 439 states and 521 transitions. [2021-10-28 09:43:11,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states and 521 transitions. [2021-10-28 09:43:11,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 427. [2021-10-28 09:43:11,602 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) [2021-10-28 09:43:11,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 508 transitions. [2021-10-28 09:43:11,603 INFO L704 BuchiCegarLoop]: Abstraction has 427 states and 508 transitions. [2021-10-28 09:43:11,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:43:11,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:43:11,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:43:11,604 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) [2021-10-28 09:43:11,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:43:11,623 INFO L93 Difference]: Finished difference Result 236 states and 278 transitions. [2021-10-28 09:43:11,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:43:11,624 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 236 states and 278 transitions. [2021-10-28 09:43:11,626 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2021-10-28 09:43:11,627 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 236 states to 221 states and 263 transitions. [2021-10-28 09:43:11,627 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 135 [2021-10-28 09:43:11,628 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 135 [2021-10-28 09:43:11,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 221 states and 263 transitions. [2021-10-28 09:43:11,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:43:11,628 INFO L681 BuchiCegarLoop]: Abstraction has 221 states and 263 transitions. [2021-10-28 09:43:11,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states and 263 transitions. [2021-10-28 09:43:11,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 214. [2021-10-28 09:43:11,633 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) [2021-10-28 09:43:11,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 256 transitions. [2021-10-28 09:43:11,634 INFO L704 BuchiCegarLoop]: Abstraction has 214 states and 256 transitions. [2021-10-28 09:43:11,634 INFO L587 BuchiCegarLoop]: Abstraction has 214 states and 256 transitions. [2021-10-28 09:43:11,634 INFO L425 BuchiCegarLoop]: ======== Iteration 20============ [2021-10-28 09:43:11,634 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 214 states and 256 transitions. [2021-10-28 09:43:11,635 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 80 [2021-10-28 09:43:11,636 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:43:11,636 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:43:11,636 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 10, 1, 1, 1] [2021-10-28 09:43:11,637 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [13, 12, 12, 10, 3, 1, 1] [2021-10-28 09:43:11,637 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 [2021-10-28 09:43:11,637 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 [2021-10-28 09:43:11,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:11,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1244253986, now seen corresponding path program 3 times [2021-10-28 09:43:11,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:11,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407396630] [2021-10-28 09:43:11,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:11,638 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:11,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:11,652 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:43:11,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:11,658 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:43:11,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:11,659 INFO L85 PathProgramCache]: Analyzing trace with hash -2004957192, now seen corresponding path program 11 times [2021-10-28 09:43:11,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:11,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507742745] [2021-10-28 09:43:11,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:11,659 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:11,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:11,666 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:43:11,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:11,673 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:43:11,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:11,674 INFO L85 PathProgramCache]: Analyzing trace with hash -364906343, now seen corresponding path program 10 times [2021-10-28 09:43:11,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:11,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832729346] [2021-10-28 09:43:11,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:11,675 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:11,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:11,715 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 671 proven. 10 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-28 09:43:11,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:43:11,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832729346] [2021-10-28 09:43:11,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832729346] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:43:11,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363762291] [2021-10-28 09:43:11,716 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 09:43:11,716 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:43:11,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:11,717 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:43:11,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (85)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:11,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2021-10-28 09:43:11,986 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 09:43:11,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:43:11,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:43:11,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:12,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 671 proven. 10 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-28 09:43:12,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363762291] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:43:12,202 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:43:12,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-28 09:43:12,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073233383] [2021-10-28 09:43:12,451 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:43:12,451 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:43:12,451 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:43:12,451 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:43:12,451 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:43:12,451 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:12,451 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:43:12,451 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:43:12,451 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration20_Loop [2021-10-28 09:43:12,451 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:43:12,451 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:43:12,452 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:12,455 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:12,461 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:12,464 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:12,520 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:43:12,521 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:43:12,521 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:12,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:12,522 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:12,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (87)] Waiting until timeout for monitored process [2021-10-28 09:43:12,532 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:43:12,532 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:43:12,544 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:43:12,544 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: [] [2021-10-28 09:43:12,566 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (87)] Ended with exit code 0 [2021-10-28 09:43:12,567 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:12,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:12,567 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:12,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (88)] Waiting until timeout for monitored process [2021-10-28 09:43:12,569 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:43:12,569 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:43:12,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (88)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:12,596 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:12,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:12,597 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:12,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (89)] Waiting until timeout for monitored process [2021-10-28 09:43:12,598 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:43:12,598 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:43:12,609 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:43:12,628 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (89)] Ended with exit code 0 [2021-10-28 09:43:12,628 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:43:12,628 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:43:12,628 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:43:12,628 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:43:12,628 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:43:12,628 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:12,628 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:43:12,628 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:43:12,629 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration20_Loop [2021-10-28 09:43:12,629 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:43:12,629 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:43:12,629 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:12,635 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:12,637 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:12,638 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:12,672 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:43:12,672 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:43:12,672 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:12,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:12,673 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:12,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (90)] Waiting until timeout for monitored process [2021-10-28 09:43:12,674 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 [2021-10-28 09:43:12,681 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:43:12,681 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:43:12,681 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:43:12,681 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:43:12,681 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:43:12,682 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:43:12,682 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:43:12,718 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:43:12,721 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 09:43:12,721 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 09:43:12,722 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:12,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:12,724 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:12,731 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:43:12,731 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:43:12,731 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:43:12,731 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-28 09:43:12,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (91)] Waiting until timeout for monitored process [2021-10-28 09:43:12,750 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (90)] Ended with exit code 0 [2021-10-28 09:43:12,751 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:43:12,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:12,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:12,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:43:12,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:12,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (91)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:12,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:12,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:43:12,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:13,115 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 122 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-28 09:43:13,116 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 [2021-10-28 09:43:13,116 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) [2021-10-28 09:43:13,272 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. [2021-10-28 09:43:13,273 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 [2021-10-28 09:43:13,273 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) [2021-10-28 09:43:13,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 45 transitions. [2021-10-28 09:43:13,273 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 45 transitions. Stem has 44 letters. Loop has 52 letters. [2021-10-28 09:43:13,274 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:43:13,274 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 45 transitions. Stem has 96 letters. Loop has 52 letters. [2021-10-28 09:43:13,274 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:43:13,274 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 45 transitions. Stem has 44 letters. Loop has 104 letters. [2021-10-28 09:43:13,275 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:43:13,275 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 565 states and 685 transitions. [2021-10-28 09:43:13,280 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 84 [2021-10-28 09:43:13,283 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 565 states to 483 states and 571 transitions. [2021-10-28 09:43:13,284 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 182 [2021-10-28 09:43:13,285 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 188 [2021-10-28 09:43:13,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 483 states and 571 transitions. [2021-10-28 09:43:13,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:43:13,285 INFO L681 BuchiCegarLoop]: Abstraction has 483 states and 571 transitions. [2021-10-28 09:43:13,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states and 571 transitions. [2021-10-28 09:43:13,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 469. [2021-10-28 09:43:13,294 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) [2021-10-28 09:43:13,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 556 transitions. [2021-10-28 09:43:13,298 INFO L704 BuchiCegarLoop]: Abstraction has 469 states and 556 transitions. [2021-10-28 09:43:13,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:43:13,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:43:13,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:43:13,300 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) [2021-10-28 09:43:13,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:43:13,332 INFO L93 Difference]: Finished difference Result 248 states and 288 transitions. [2021-10-28 09:43:13,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:43:13,332 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 248 states and 288 transitions. [2021-10-28 09:43:13,334 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2021-10-28 09:43:13,336 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 248 states to 225 states and 265 transitions. [2021-10-28 09:43:13,336 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 139 [2021-10-28 09:43:13,336 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 139 [2021-10-28 09:43:13,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 225 states and 265 transitions. [2021-10-28 09:43:13,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:43:13,337 INFO L681 BuchiCegarLoop]: Abstraction has 225 states and 265 transitions. [2021-10-28 09:43:13,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states and 265 transitions. [2021-10-28 09:43:13,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 214. [2021-10-28 09:43:13,342 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) [2021-10-28 09:43:13,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 254 transitions. [2021-10-28 09:43:13,342 INFO L704 BuchiCegarLoop]: Abstraction has 214 states and 254 transitions. [2021-10-28 09:43:13,343 INFO L587 BuchiCegarLoop]: Abstraction has 214 states and 254 transitions. [2021-10-28 09:43:13,343 INFO L425 BuchiCegarLoop]: ======== Iteration 21============ [2021-10-28 09:43:13,343 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 214 states and 254 transitions. [2021-10-28 09:43:13,344 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 80 [2021-10-28 09:43:13,344 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:43:13,344 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:43:13,345 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 10, 1, 1, 1] [2021-10-28 09:43:13,345 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [14, 13, 13, 10, 4, 1, 1] [2021-10-28 09:43:13,346 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 [2021-10-28 09:43:13,346 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 [2021-10-28 09:43:13,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:13,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1244253986, now seen corresponding path program 4 times [2021-10-28 09:43:13,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:13,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346162689] [2021-10-28 09:43:13,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:13,347 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:13,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:13,355 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:43:13,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:13,361 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:43:13,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:13,361 INFO L85 PathProgramCache]: Analyzing trace with hash -102857041, now seen corresponding path program 12 times [2021-10-28 09:43:13,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:13,362 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112243707] [2021-10-28 09:43:13,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:13,362 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:13,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:13,370 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:43:13,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:13,391 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:43:13,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:13,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1080327888, now seen corresponding path program 11 times [2021-10-28 09:43:13,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:13,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548753045] [2021-10-28 09:43:13,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:13,392 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:13,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:13,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 755 proven. 21 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-28 09:43:13,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:43:13,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548753045] [2021-10-28 09:43:13,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548753045] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:43:13,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831107139] [2021-10-28 09:43:13,438 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 09:43:13,438 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:43:13,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:13,442 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:43:13,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2021-10-28 09:43:13,770 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-10-28 09:43:13,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:43:13,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 09:43:13,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:13,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 755 proven. 21 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-28 09:43:13,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831107139] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:43:13,977 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:43:13,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-10-28 09:43:13,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273778697] [2021-10-28 09:43:14,338 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:43:14,339 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:43:14,339 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:43:14,339 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:43:14,339 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:43:14,339 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:14,339 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:43:14,339 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:43:14,339 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration21_Loop [2021-10-28 09:43:14,339 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:43:14,339 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:43:14,340 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:14,347 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:14,351 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:14,353 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:14,389 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:43:14,389 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:43:14,389 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:14,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:14,391 INFO L229 MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:14,400 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:43:14,400 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:43:14,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (93)] Waiting until timeout for monitored process [2021-10-28 09:43:14,427 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (93)] Ended with exit code 0 [2021-10-28 09:43:14,427 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:14,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:14,428 INFO L229 MonitoredProcess]: Starting monitored process 94 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:14,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (94)] Waiting until timeout for monitored process [2021-10-28 09:43:14,429 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:43:14,429 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:43:14,439 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:43:14,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (94)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:14,457 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:43:14,458 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:43:14,458 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:43:14,458 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:43:14,458 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:43:14,458 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:14,458 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:43:14,458 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:43:14,458 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration21_Loop [2021-10-28 09:43:14,458 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:43:14,458 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:43:14,459 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:14,465 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:14,467 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:14,470 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:14,502 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:43:14,503 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:43:14,503 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:14,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:14,503 INFO L229 MonitoredProcess]: Starting monitored process 95 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:14,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (95)] Waiting until timeout for monitored process [2021-10-28 09:43:14,504 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 [2021-10-28 09:43:14,511 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:43:14,511 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:43:14,511 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:43:14,512 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:43:14,512 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:43:14,512 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:43:14,512 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:43:14,514 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:43:14,517 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 09:43:14,517 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 09:43:14,517 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:14,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:14,518 INFO L229 MonitoredProcess]: Starting monitored process 96 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:14,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (96)] Waiting until timeout for monitored process [2021-10-28 09:43:14,519 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:43:14,519 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:43:14,519 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:43:14,519 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-28 09:43:14,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (95)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:14,538 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:43:14,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:14,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:14,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:43:14,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:14,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:14,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 09:43:14,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:14,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (96)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:14,864 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-28 09:43:14,865 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 [2021-10-28 09:43:14,865 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) [2021-10-28 09:43:15,060 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. [2021-10-28 09:43:15,061 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 [2021-10-28 09:43:15,061 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) [2021-10-28 09:43:15,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 54 transitions. [2021-10-28 09:43:15,062 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 54 transitions. Stem has 44 letters. Loop has 56 letters. [2021-10-28 09:43:15,063 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:43:15,063 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 54 transitions. Stem has 100 letters. Loop has 56 letters. [2021-10-28 09:43:15,063 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:43:15,063 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 54 transitions. Stem has 44 letters. Loop has 112 letters. [2021-10-28 09:43:15,065 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:43:15,065 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 653 states and 789 transitions. [2021-10-28 09:43:15,071 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 84 [2021-10-28 09:43:15,074 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 653 states to 535 states and 631 transitions. [2021-10-28 09:43:15,074 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 186 [2021-10-28 09:43:15,075 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 193 [2021-10-28 09:43:15,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 535 states and 631 transitions. [2021-10-28 09:43:15,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:43:15,075 INFO L681 BuchiCegarLoop]: Abstraction has 535 states and 631 transitions. [2021-10-28 09:43:15,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states and 631 transitions. [2021-10-28 09:43:15,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 519. [2021-10-28 09:43:15,086 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) [2021-10-28 09:43:15,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 614 transitions. [2021-10-28 09:43:15,087 INFO L704 BuchiCegarLoop]: Abstraction has 519 states and 614 transitions. [2021-10-28 09:43:15,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:43:15,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:43:15,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:43:15,088 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) [2021-10-28 09:43:15,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:43:15,116 INFO L93 Difference]: Finished difference Result 260 states and 298 transitions. [2021-10-28 09:43:15,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:43:15,117 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 260 states and 298 transitions. [2021-10-28 09:43:15,120 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2021-10-28 09:43:15,121 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 260 states to 229 states and 267 transitions. [2021-10-28 09:43:15,121 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 143 [2021-10-28 09:43:15,122 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 143 [2021-10-28 09:43:15,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 229 states and 267 transitions. [2021-10-28 09:43:15,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:43:15,122 INFO L681 BuchiCegarLoop]: Abstraction has 229 states and 267 transitions. [2021-10-28 09:43:15,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states and 267 transitions. [2021-10-28 09:43:15,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 214. [2021-10-28 09:43:15,127 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) [2021-10-28 09:43:15,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 252 transitions. [2021-10-28 09:43:15,128 INFO L704 BuchiCegarLoop]: Abstraction has 214 states and 252 transitions. [2021-10-28 09:43:15,128 INFO L587 BuchiCegarLoop]: Abstraction has 214 states and 252 transitions. [2021-10-28 09:43:15,128 INFO L425 BuchiCegarLoop]: ======== Iteration 22============ [2021-10-28 09:43:15,128 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 214 states and 252 transitions. [2021-10-28 09:43:15,130 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 80 [2021-10-28 09:43:15,130 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:43:15,130 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:43:15,131 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 10, 1, 1, 1] [2021-10-28 09:43:15,131 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [15, 14, 14, 10, 5, 1, 1] [2021-10-28 09:43:15,132 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 [2021-10-28 09:43:15,132 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 [2021-10-28 09:43:15,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:15,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1244253986, now seen corresponding path program 5 times [2021-10-28 09:43:15,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:15,133 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738437509] [2021-10-28 09:43:15,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:15,133 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:15,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:15,145 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:43:15,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:15,153 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:43:15,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:15,154 INFO L85 PathProgramCache]: Analyzing trace with hash 591532518, now seen corresponding path program 13 times [2021-10-28 09:43:15,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:15,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768766054] [2021-10-28 09:43:15,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:15,155 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:15,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:15,164 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:43:15,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:15,174 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:43:15,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:15,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1205670279, now seen corresponding path program 12 times [2021-10-28 09:43:15,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:15,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607441921] [2021-10-28 09:43:15,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:15,175 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:15,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:15,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 839 proven. 36 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-28 09:43:15,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:43:15,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607441921] [2021-10-28 09:43:15,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607441921] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:43:15,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780880176] [2021-10-28 09:43:15,249 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-28 09:43:15,250 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:43:15,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:15,255 INFO L229 MonitoredProcess]: Starting monitored process 97 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:43:15,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2021-10-28 09:43:15,720 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 26 check-sat command(s) [2021-10-28 09:43:15,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:43:15,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:43:15,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:15,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 839 proven. 36 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-28 09:43:15,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780880176] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:43:15,925 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:43:15,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-10-28 09:43:15,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455189506] [2021-10-28 09:43:16,232 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:43:16,233 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:43:16,233 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:43:16,233 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:43:16,233 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:43:16,233 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:16,233 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:43:16,233 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:43:16,234 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration22_Loop [2021-10-28 09:43:16,234 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:43:16,234 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:43:16,235 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:16,238 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:16,245 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:16,249 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:16,289 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:43:16,289 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:43:16,289 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:16,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:16,290 INFO L229 MonitoredProcess]: Starting monitored process 98 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:16,292 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:43:16,292 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:43:16,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (98)] Waiting until timeout for monitored process [2021-10-28 09:43:16,320 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:43:16,320 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: [] [2021-10-28 09:43:16,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (98)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:16,351 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:16,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:16,352 INFO L229 MonitoredProcess]: Starting monitored process 99 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:16,354 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:43:16,354 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:43:16,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (99)] Waiting until timeout for monitored process [2021-10-28 09:43:16,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (99)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:16,415 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:16,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:16,416 INFO L229 MonitoredProcess]: Starting monitored process 100 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:16,418 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:43:16,418 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:43:16,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (100)] Waiting until timeout for monitored process [2021-10-28 09:43:16,444 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:43:16,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (100)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:16,477 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:43:16,477 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:43:16,477 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:43:16,477 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:43:16,477 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:43:16,477 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:16,477 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:43:16,477 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:43:16,477 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration22_Loop [2021-10-28 09:43:16,477 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:43:16,477 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:43:16,478 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:16,480 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:16,484 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:16,491 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:16,535 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:43:16,535 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:43:16,535 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:16,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:16,537 INFO L229 MonitoredProcess]: Starting monitored process 101 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:16,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (101)] Waiting until timeout for monitored process [2021-10-28 09:43:16,540 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 [2021-10-28 09:43:16,547 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:43:16,547 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:43:16,547 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:43:16,547 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:43:16,550 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:43:16,550 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:43:16,569 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:43:16,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (101)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:16,589 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:16,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:16,590 INFO L229 MonitoredProcess]: Starting monitored process 102 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:16,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (102)] Waiting until timeout for monitored process [2021-10-28 09:43:16,591 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 [2021-10-28 09:43:16,598 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:43:16,598 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:43:16,598 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:43:16,598 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:43:16,599 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:43:16,599 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:43:16,602 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:43:16,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (102)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:16,621 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:16,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:16,622 INFO L229 MonitoredProcess]: Starting monitored process 103 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:16,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (103)] Waiting until timeout for monitored process [2021-10-28 09:43:16,623 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 [2021-10-28 09:43:16,630 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:43:16,630 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:43:16,630 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:43:16,630 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:43:16,630 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:43:16,631 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:43:16,631 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:43:16,632 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:43:16,634 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 09:43:16,634 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 09:43:16,634 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:16,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:16,636 INFO L229 MonitoredProcess]: Starting monitored process 104 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:16,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (104)] Waiting until timeout for monitored process [2021-10-28 09:43:16,636 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:43:16,636 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:43:16,636 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:43:16,637 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-28 09:43:16,656 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (103)] Ended with exit code 0 [2021-10-28 09:43:16,656 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:43:16,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:16,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:16,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:43:16,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:16,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:16,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 09:43:16,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:16,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (104)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:17,021 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 230 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-28 09:43:17,021 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 [2021-10-28 09:43:17,022 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) [2021-10-28 09:43:17,239 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. [2021-10-28 09:43:17,240 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 [2021-10-28 09:43:17,240 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) [2021-10-28 09:43:17,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 63 transitions. [2021-10-28 09:43:17,241 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 63 transitions. Stem has 44 letters. Loop has 60 letters. [2021-10-28 09:43:17,241 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:43:17,241 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 63 transitions. Stem has 104 letters. Loop has 60 letters. [2021-10-28 09:43:17,242 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:43:17,242 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 63 transitions. Stem has 44 letters. Loop has 120 letters. [2021-10-28 09:43:17,243 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:43:17,243 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 757 states and 913 transitions. [2021-10-28 09:43:17,248 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 84 [2021-10-28 09:43:17,252 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 757 states to 595 states and 701 transitions. [2021-10-28 09:43:17,252 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 190 [2021-10-28 09:43:17,252 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 198 [2021-10-28 09:43:17,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 595 states and 701 transitions. [2021-10-28 09:43:17,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:43:17,256 INFO L681 BuchiCegarLoop]: Abstraction has 595 states and 701 transitions. [2021-10-28 09:43:17,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states and 701 transitions. [2021-10-28 09:43:17,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 577. [2021-10-28 09:43:17,266 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) [2021-10-28 09:43:17,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 682 transitions. [2021-10-28 09:43:17,268 INFO L704 BuchiCegarLoop]: Abstraction has 577 states and 682 transitions. [2021-10-28 09:43:17,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:43:17,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:43:17,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:43:17,269 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) [2021-10-28 09:43:17,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:43:17,301 INFO L93 Difference]: Finished difference Result 272 states and 308 transitions. [2021-10-28 09:43:17,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:43:17,302 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 272 states and 308 transitions. [2021-10-28 09:43:17,304 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2021-10-28 09:43:17,305 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 272 states to 233 states and 269 transitions. [2021-10-28 09:43:17,305 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 147 [2021-10-28 09:43:17,306 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 147 [2021-10-28 09:43:17,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 233 states and 269 transitions. [2021-10-28 09:43:17,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:43:17,309 INFO L681 BuchiCegarLoop]: Abstraction has 233 states and 269 transitions. [2021-10-28 09:43:17,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states and 269 transitions. [2021-10-28 09:43:17,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 214. [2021-10-28 09:43:17,313 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) [2021-10-28 09:43:17,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 250 transitions. [2021-10-28 09:43:17,314 INFO L704 BuchiCegarLoop]: Abstraction has 214 states and 250 transitions. [2021-10-28 09:43:17,314 INFO L587 BuchiCegarLoop]: Abstraction has 214 states and 250 transitions. [2021-10-28 09:43:17,314 INFO L425 BuchiCegarLoop]: ======== Iteration 23============ [2021-10-28 09:43:17,314 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 214 states and 250 transitions. [2021-10-28 09:43:17,316 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 80 [2021-10-28 09:43:17,316 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:43:17,316 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:43:17,317 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 10, 1, 1, 1] [2021-10-28 09:43:17,317 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [16, 15, 15, 10, 6, 1, 1] [2021-10-28 09:43:17,317 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 [2021-10-28 09:43:17,317 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 [2021-10-28 09:43:17,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:17,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1244253986, now seen corresponding path program 6 times [2021-10-28 09:43:17,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:17,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174510689] [2021-10-28 09:43:17,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:17,318 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:17,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:17,327 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:43:17,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:17,334 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:43:17,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:17,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1930483299, now seen corresponding path program 14 times [2021-10-28 09:43:17,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:17,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927421397] [2021-10-28 09:43:17,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:17,336 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:17,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:17,372 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:43:17,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:17,381 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:43:17,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:17,381 INFO L85 PathProgramCache]: Analyzing trace with hash -422612802, now seen corresponding path program 13 times [2021-10-28 09:43:17,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:17,382 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473332341] [2021-10-28 09:43:17,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:17,382 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:17,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:17,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 923 proven. 55 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-28 09:43:17,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:43:17,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473332341] [2021-10-28 09:43:17,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473332341] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:43:17,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286682123] [2021-10-28 09:43:17,453 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-28 09:43:17,453 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:43:17,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:17,455 INFO L229 MonitoredProcess]: Starting monitored process 105 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:43:17,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2021-10-28 09:43:18,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:18,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 09:43:18,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:18,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 923 proven. 55 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-28 09:43:18,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286682123] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:43:18,240 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:43:18,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-10-28 09:43:18,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291225104] [2021-10-28 09:43:18,614 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:43:18,614 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:43:18,614 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:43:18,614 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:43:18,614 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:43:18,614 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:18,615 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:43:18,615 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:43:18,615 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration23_Loop [2021-10-28 09:43:18,615 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:43:18,615 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:43:18,616 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:18,623 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:18,631 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:18,636 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:18,666 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:43:18,666 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:43:18,667 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:18,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:18,667 INFO L229 MonitoredProcess]: Starting monitored process 106 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:18,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (106)] Waiting until timeout for monitored process [2021-10-28 09:43:18,668 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:43:18,669 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:43:18,689 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:43:18,689 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: [] [2021-10-28 09:43:18,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (106)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:18,708 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:18,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:18,709 INFO L229 MonitoredProcess]: Starting monitored process 107 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:18,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (107)] Waiting until timeout for monitored process [2021-10-28 09:43:18,710 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:43:18,710 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:43:18,740 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (107)] Ended with exit code 0 [2021-10-28 09:43:18,741 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:18,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:18,742 INFO L229 MonitoredProcess]: Starting monitored process 108 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:18,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (108)] Waiting until timeout for monitored process [2021-10-28 09:43:18,743 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:43:18,743 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:43:18,752 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:43:18,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (108)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:18,770 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:43:18,771 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:43:18,771 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:43:18,771 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:43:18,771 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:43:18,771 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:18,771 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:43:18,771 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:43:18,771 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration23_Loop [2021-10-28 09:43:18,771 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:43:18,771 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:43:18,772 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:18,782 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:18,789 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:18,792 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:18,836 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:43:18,836 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:43:18,836 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:18,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:18,837 INFO L229 MonitoredProcess]: Starting monitored process 109 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:18,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (109)] Waiting until timeout for monitored process [2021-10-28 09:43:18,838 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 [2021-10-28 09:43:18,845 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:43:18,845 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:43:18,845 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:43:18,845 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:43:18,847 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:43:18,847 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:43:18,850 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:43:18,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (109)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:18,868 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:18,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:18,869 INFO L229 MonitoredProcess]: Starting monitored process 110 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:18,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (110)] Waiting until timeout for monitored process [2021-10-28 09:43:18,870 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 [2021-10-28 09:43:18,877 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:43:18,877 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:43:18,877 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:43:18,877 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:43:18,878 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:43:18,878 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:43:18,878 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:43:18,880 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:43:18,882 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 09:43:18,882 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 09:43:18,882 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:18,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:18,883 INFO L229 MonitoredProcess]: Starting monitored process 111 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:18,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (111)] Waiting until timeout for monitored process [2021-10-28 09:43:18,884 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:43:18,884 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:43:18,884 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:43:18,884 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-28 09:43:18,905 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (110)] Ended with exit code 0 [2021-10-28 09:43:18,905 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:43:18,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:18,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:18,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:43:18,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:19,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:19,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 09:43:19,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:19,312 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-28 09:43:19,313 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 [2021-10-28 09:43:19,313 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) [2021-10-28 09:43:19,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (111)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:19,574 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. [2021-10-28 09:43:19,581 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 [2021-10-28 09:43:19,581 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) [2021-10-28 09:43:19,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 72 transitions. [2021-10-28 09:43:19,582 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 72 transitions. Stem has 44 letters. Loop has 64 letters. [2021-10-28 09:43:19,582 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:43:19,583 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 72 transitions. Stem has 108 letters. Loop has 64 letters. [2021-10-28 09:43:19,583 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:43:19,583 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 72 transitions. Stem has 44 letters. Loop has 128 letters. [2021-10-28 09:43:19,584 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:43:19,585 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 877 states and 1057 transitions. [2021-10-28 09:43:19,590 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 84 [2021-10-28 09:43:19,594 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 877 states to 663 states and 781 transitions. [2021-10-28 09:43:19,594 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 194 [2021-10-28 09:43:19,595 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 203 [2021-10-28 09:43:19,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 663 states and 781 transitions. [2021-10-28 09:43:19,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:43:19,595 INFO L681 BuchiCegarLoop]: Abstraction has 663 states and 781 transitions. [2021-10-28 09:43:19,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states and 781 transitions. [2021-10-28 09:43:19,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 643. [2021-10-28 09:43:19,606 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) [2021-10-28 09:43:19,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 760 transitions. [2021-10-28 09:43:19,607 INFO L704 BuchiCegarLoop]: Abstraction has 643 states and 760 transitions. [2021-10-28 09:43:19,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:43:19,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:43:19,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:43:19,608 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) [2021-10-28 09:43:19,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:43:19,644 INFO L93 Difference]: Finished difference Result 284 states and 318 transitions. [2021-10-28 09:43:19,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:43:19,644 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 284 states and 318 transitions. [2021-10-28 09:43:19,646 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2021-10-28 09:43:19,648 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 284 states to 237 states and 271 transitions. [2021-10-28 09:43:19,648 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 151 [2021-10-28 09:43:19,648 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 151 [2021-10-28 09:43:19,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 237 states and 271 transitions. [2021-10-28 09:43:19,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:43:19,649 INFO L681 BuchiCegarLoop]: Abstraction has 237 states and 271 transitions. [2021-10-28 09:43:19,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states and 271 transitions. [2021-10-28 09:43:19,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 214. [2021-10-28 09:43:19,653 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) [2021-10-28 09:43:19,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 248 transitions. [2021-10-28 09:43:19,654 INFO L704 BuchiCegarLoop]: Abstraction has 214 states and 248 transitions. [2021-10-28 09:43:19,654 INFO L587 BuchiCegarLoop]: Abstraction has 214 states and 248 transitions. [2021-10-28 09:43:19,654 INFO L425 BuchiCegarLoop]: ======== Iteration 24============ [2021-10-28 09:43:19,654 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 214 states and 248 transitions. [2021-10-28 09:43:19,655 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 80 [2021-10-28 09:43:19,655 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:43:19,655 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:43:19,656 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 10, 1, 1, 1] [2021-10-28 09:43:19,656 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [17, 16, 16, 10, 7, 1, 1] [2021-10-28 09:43:19,657 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 [2021-10-28 09:43:19,657 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 [2021-10-28 09:43:19,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:19,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1244253986, now seen corresponding path program 7 times [2021-10-28 09:43:19,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:19,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743265150] [2021-10-28 09:43:19,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:19,658 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:19,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:19,666 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:43:19,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:19,672 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:43:19,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:19,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1504997932, now seen corresponding path program 15 times [2021-10-28 09:43:19,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:19,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328666680] [2021-10-28 09:43:19,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:19,673 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:19,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:19,683 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:43:19,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:19,691 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:43:19,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:19,692 INFO L85 PathProgramCache]: Analyzing trace with hash -92185483, now seen corresponding path program 14 times [2021-10-28 09:43:19,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:19,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773362152] [2021-10-28 09:43:19,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:19,692 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:19,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:19,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 1007 proven. 78 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-28 09:43:19,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:43:19,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773362152] [2021-10-28 09:43:19,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773362152] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:43:19,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323930378] [2021-10-28 09:43:19,782 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:43:19,784 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:43:19,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:19,785 INFO L229 MonitoredProcess]: Starting monitored process 112 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:43:19,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2021-10-28 09:43:20,426 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:43:20,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:43:20,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 09:43:20,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:20,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 1007 proven. 78 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-28 09:43:20,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323930378] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:43:20,686 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:43:20,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-10-28 09:43:20,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372273084] [2021-10-28 09:43:21,054 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:43:21,054 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:43:21,054 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:43:21,054 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:43:21,054 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:43:21,054 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:21,054 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:43:21,055 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:43:21,055 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration24_Loop [2021-10-28 09:43:21,055 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:43:21,055 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:43:21,056 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:21,063 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:21,067 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:21,069 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:21,100 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:43:21,100 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:43:21,100 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:21,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:21,101 INFO L229 MonitoredProcess]: Starting monitored process 113 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:21,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (113)] Waiting until timeout for monitored process [2021-10-28 09:43:21,103 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:43:21,103 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:43:21,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (113)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:21,129 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:21,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:21,130 INFO L229 MonitoredProcess]: Starting monitored process 114 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:21,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (114)] Waiting until timeout for monitored process [2021-10-28 09:43:21,131 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:43:21,131 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:43:21,140 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:43:21,159 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (114)] Ended with exit code 0 [2021-10-28 09:43:21,159 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:43:21,159 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:43:21,159 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:43:21,159 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:43:21,159 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:43:21,159 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:21,159 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:43:21,159 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:43:21,159 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration24_Loop [2021-10-28 09:43:21,159 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:43:21,159 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:43:21,160 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:21,162 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:21,168 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:21,171 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:21,208 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:43:21,208 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:43:21,208 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:21,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:21,209 INFO L229 MonitoredProcess]: Starting monitored process 115 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:21,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (115)] Waiting until timeout for monitored process [2021-10-28 09:43:21,210 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 [2021-10-28 09:43:21,217 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:43:21,217 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:43:21,217 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:43:21,217 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:43:21,218 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:43:21,218 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:43:21,221 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:43:21,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (115)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:21,239 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:21,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:21,240 INFO L229 MonitoredProcess]: Starting monitored process 116 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:21,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (116)] Waiting until timeout for monitored process [2021-10-28 09:43:21,242 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 [2021-10-28 09:43:21,249 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:43:21,249 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:43:21,249 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:43:21,249 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:43:21,250 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:43:21,250 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:43:21,250 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:43:21,252 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:43:21,253 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-28 09:43:21,253 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 09:43:21,253 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:21,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:21,255 INFO L229 MonitoredProcess]: Starting monitored process 117 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:21,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (117)] Waiting until timeout for monitored process [2021-10-28 09:43:21,255 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:43:21,256 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:43:21,256 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:43:21,256 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-28 09:43:21,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (116)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:21,275 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:43:21,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:21,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:21,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:43:21,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:21,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:21,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 09:43:21,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:21,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (117)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:21,683 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-28 09:43:21,683 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 [2021-10-28 09:43:21,684 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) [2021-10-28 09:43:22,048 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. [2021-10-28 09:43:22,048 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 [2021-10-28 09:43:22,049 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) [2021-10-28 09:43:22,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 81 transitions. [2021-10-28 09:43:22,049 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 18 states and 81 transitions. Stem has 44 letters. Loop has 68 letters. [2021-10-28 09:43:22,050 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:43:22,050 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 18 states and 81 transitions. Stem has 112 letters. Loop has 68 letters. [2021-10-28 09:43:22,050 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:43:22,050 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 18 states and 81 transitions. Stem has 44 letters. Loop has 136 letters. [2021-10-28 09:43:22,052 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:43:22,052 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1013 states and 1221 transitions. [2021-10-28 09:43:22,058 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 84 [2021-10-28 09:43:22,062 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1013 states to 739 states and 871 transitions. [2021-10-28 09:43:22,063 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 198 [2021-10-28 09:43:22,063 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 208 [2021-10-28 09:43:22,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 739 states and 871 transitions. [2021-10-28 09:43:22,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:43:22,064 INFO L681 BuchiCegarLoop]: Abstraction has 739 states and 871 transitions. [2021-10-28 09:43:22,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states and 871 transitions. [2021-10-28 09:43:22,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 717. [2021-10-28 09:43:22,075 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) [2021-10-28 09:43:22,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 848 transitions. [2021-10-28 09:43:22,077 INFO L704 BuchiCegarLoop]: Abstraction has 717 states and 848 transitions. [2021-10-28 09:43:22,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:43:22,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:43:22,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:43:22,078 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) [2021-10-28 09:43:22,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:43:22,122 INFO L93 Difference]: Finished difference Result 296 states and 328 transitions. [2021-10-28 09:43:22,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:43:22,123 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 296 states and 328 transitions. [2021-10-28 09:43:22,125 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2021-10-28 09:43:22,126 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 296 states to 241 states and 273 transitions. [2021-10-28 09:43:22,126 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 155 [2021-10-28 09:43:22,127 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 155 [2021-10-28 09:43:22,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 241 states and 273 transitions. [2021-10-28 09:43:22,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:43:22,127 INFO L681 BuchiCegarLoop]: Abstraction has 241 states and 273 transitions. [2021-10-28 09:43:22,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states and 273 transitions. [2021-10-28 09:43:22,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 214. [2021-10-28 09:43:22,131 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) [2021-10-28 09:43:22,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 246 transitions. [2021-10-28 09:43:22,132 INFO L704 BuchiCegarLoop]: Abstraction has 214 states and 246 transitions. [2021-10-28 09:43:22,132 INFO L587 BuchiCegarLoop]: Abstraction has 214 states and 246 transitions. [2021-10-28 09:43:22,132 INFO L425 BuchiCegarLoop]: ======== Iteration 25============ [2021-10-28 09:43:22,132 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 214 states and 246 transitions. [2021-10-28 09:43:22,133 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 80 [2021-10-28 09:43:22,133 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:43:22,134 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:43:22,134 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 10, 1, 1, 1] [2021-10-28 09:43:22,134 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [18, 17, 17, 10, 8, 1, 1] [2021-10-28 09:43:22,135 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 [2021-10-28 09:43:22,135 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 [2021-10-28 09:43:22,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:22,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1244253986, now seen corresponding path program 8 times [2021-10-28 09:43:22,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:22,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732195769] [2021-10-28 09:43:22,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:22,136 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:22,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:22,145 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:43:22,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:22,150 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:43:22,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:22,151 INFO L85 PathProgramCache]: Analyzing trace with hash 903675531, now seen corresponding path program 16 times [2021-10-28 09:43:22,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:22,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907654398] [2021-10-28 09:43:22,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:22,151 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:22,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:22,161 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:43:22,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:22,170 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:43:22,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:22,171 INFO L85 PathProgramCache]: Analyzing trace with hash -950496084, now seen corresponding path program 15 times [2021-10-28 09:43:22,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:22,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474587277] [2021-10-28 09:43:22,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:22,171 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:22,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:22,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 1091 proven. 105 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-28 09:43:22,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:43:22,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474587277] [2021-10-28 09:43:22,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474587277] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:43:22,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594835787] [2021-10-28 09:43:22,289 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:43:22,290 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:43:22,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:22,291 INFO L229 MonitoredProcess]: Starting monitored process 118 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:43:22,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2021-10-28 09:43:22,829 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 25 check-sat command(s) [2021-10-28 09:43:22,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:43:22,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 09:43:22,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:23,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 1091 proven. 105 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-28 09:43:23,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594835787] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:43:23,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:43:23,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-10-28 09:43:23,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227424274] [2021-10-28 09:43:23,490 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:43:23,490 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:43:23,490 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:43:23,491 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:43:23,491 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:43:23,491 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:23,491 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:43:23,491 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:43:23,491 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration25_Loop [2021-10-28 09:43:23,491 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:43:23,491 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:43:23,492 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:23,493 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:23,498 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:23,501 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:23,533 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:43:23,533 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:43:23,533 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:23,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:23,534 INFO L229 MonitoredProcess]: Starting monitored process 119 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:23,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (119)] Waiting until timeout for monitored process [2021-10-28 09:43:23,535 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:43:23,535 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:43:23,547 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:43:23,547 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: [] [2021-10-28 09:43:23,566 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (119)] Ended with exit code 0 [2021-10-28 09:43:23,566 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:23,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:23,567 INFO L229 MonitoredProcess]: Starting monitored process 120 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:23,568 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:43:23,568 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:43:23,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (120)] Waiting until timeout for monitored process [2021-10-28 09:43:23,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (120)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:23,595 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:23,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:23,596 INFO L229 MonitoredProcess]: Starting monitored process 121 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:23,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (121)] Waiting until timeout for monitored process [2021-10-28 09:43:23,597 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:43:23,597 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:43:23,605 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:43:23,624 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (121)] Ended with exit code 0 [2021-10-28 09:43:23,624 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:43:23,624 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:43:23,624 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:43:23,624 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:43:23,624 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:43:23,624 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:23,624 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:43:23,624 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:43:23,625 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration25_Loop [2021-10-28 09:43:23,625 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:43:23,625 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:43:23,625 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:23,627 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:23,632 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:23,635 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:23,665 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:43:23,665 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:43:23,665 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:23,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:23,666 INFO L229 MonitoredProcess]: Starting monitored process 122 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:23,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (122)] Waiting until timeout for monitored process [2021-10-28 09:43:23,667 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 [2021-10-28 09:43:23,674 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:43:23,674 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:43:23,674 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:43:23,674 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:43:23,675 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:43:23,675 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:43:23,678 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:43:23,696 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (122)] Ended with exit code 0 [2021-10-28 09:43:23,696 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:23,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:23,697 INFO L229 MonitoredProcess]: Starting monitored process 123 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:23,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (123)] Waiting until timeout for monitored process [2021-10-28 09:43:23,698 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 [2021-10-28 09:43:23,705 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:43:23,705 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:43:23,705 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:43:23,705 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:43:23,705 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:43:23,706 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:43:23,706 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:43:23,707 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:43:23,709 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 09:43:23,709 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 09:43:23,710 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:23,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:23,711 INFO L229 MonitoredProcess]: Starting monitored process 124 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:23,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (124)] Waiting until timeout for monitored process [2021-10-28 09:43:23,712 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:43:23,712 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:43:23,712 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:43:23,712 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-28 09:43:23,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (123)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:23,731 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:43:23,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:23,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:23,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:43:23,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:23,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:23,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 09:43:23,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:24,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (124)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:24,206 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 422 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-28 09:43:24,211 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 [2021-10-28 09:43:24,211 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) [2021-10-28 09:43:24,644 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. [2021-10-28 09:43:24,644 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 [2021-10-28 09:43:24,644 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) [2021-10-28 09:43:24,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 90 transitions. [2021-10-28 09:43:24,645 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 90 transitions. Stem has 44 letters. Loop has 72 letters. [2021-10-28 09:43:24,646 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:43:24,646 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 90 transitions. Stem has 116 letters. Loop has 72 letters. [2021-10-28 09:43:24,647 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:43:24,647 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 90 transitions. Stem has 44 letters. Loop has 144 letters. [2021-10-28 09:43:24,649 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:43:24,649 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1165 states and 1405 transitions. [2021-10-28 09:43:24,657 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 84 [2021-10-28 09:43:24,663 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1165 states to 823 states and 971 transitions. [2021-10-28 09:43:24,664 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 202 [2021-10-28 09:43:24,664 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 213 [2021-10-28 09:43:24,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 823 states and 971 transitions. [2021-10-28 09:43:24,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:43:24,666 INFO L681 BuchiCegarLoop]: Abstraction has 823 states and 971 transitions. [2021-10-28 09:43:24,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states and 971 transitions. [2021-10-28 09:43:24,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 799. [2021-10-28 09:43:24,679 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) [2021-10-28 09:43:24,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 946 transitions. [2021-10-28 09:43:24,682 INFO L704 BuchiCegarLoop]: Abstraction has 799 states and 946 transitions. [2021-10-28 09:43:24,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:43:24,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 09:43:24,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:43:24,691 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) [2021-10-28 09:43:24,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:43:24,746 INFO L93 Difference]: Finished difference Result 308 states and 338 transitions. [2021-10-28 09:43:24,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:43:24,746 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 308 states and 338 transitions. [2021-10-28 09:43:24,749 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2021-10-28 09:43:24,750 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 308 states to 245 states and 275 transitions. [2021-10-28 09:43:24,751 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 159 [2021-10-28 09:43:24,751 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 159 [2021-10-28 09:43:24,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 245 states and 275 transitions. [2021-10-28 09:43:24,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:43:24,751 INFO L681 BuchiCegarLoop]: Abstraction has 245 states and 275 transitions. [2021-10-28 09:43:24,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states and 275 transitions. [2021-10-28 09:43:24,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 214. [2021-10-28 09:43:24,757 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) [2021-10-28 09:43:24,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 244 transitions. [2021-10-28 09:43:24,758 INFO L704 BuchiCegarLoop]: Abstraction has 214 states and 244 transitions. [2021-10-28 09:43:24,758 INFO L587 BuchiCegarLoop]: Abstraction has 214 states and 244 transitions. [2021-10-28 09:43:24,758 INFO L425 BuchiCegarLoop]: ======== Iteration 26============ [2021-10-28 09:43:24,758 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 214 states and 244 transitions. [2021-10-28 09:43:24,759 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 80 [2021-10-28 09:43:24,759 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:43:24,760 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:43:24,760 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 10, 1, 1, 1] [2021-10-28 09:43:24,761 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [19, 18, 18, 10, 9, 1, 1] [2021-10-28 09:43:24,761 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 [2021-10-28 09:43:24,761 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 [2021-10-28 09:43:24,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:24,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1244253986, now seen corresponding path program 9 times [2021-10-28 09:43:24,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:24,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933530308] [2021-10-28 09:43:24,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:24,763 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:24,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:24,779 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:43:24,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:24,784 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:43:24,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:24,785 INFO L85 PathProgramCache]: Analyzing trace with hash -917947454, now seen corresponding path program 17 times [2021-10-28 09:43:24,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:24,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669079091] [2021-10-28 09:43:24,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:24,786 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:24,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:24,803 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:43:24,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:24,812 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:43:24,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:24,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1759172963, now seen corresponding path program 16 times [2021-10-28 09:43:24,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:24,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722579677] [2021-10-28 09:43:24,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:24,814 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:24,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:24,943 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 1175 proven. 136 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-28 09:43:24,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:43:24,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722579677] [2021-10-28 09:43:24,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722579677] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:43:24,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066432081] [2021-10-28 09:43:24,944 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 09:43:24,945 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:43:24,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:24,947 INFO L229 MonitoredProcess]: Starting monitored process 125 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:43:24,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2021-10-28 09:43:25,554 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 09:43:25,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:43:25,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 09:43:25,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:25,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 1175 proven. 136 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-28 09:43:25,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066432081] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:43:25,802 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:43:25,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2021-10-28 09:43:25,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514008116] [2021-10-28 09:43:26,213 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:43:26,213 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:43:26,213 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:43:26,213 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:43:26,213 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:43:26,213 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:26,213 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:43:26,213 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:43:26,213 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration26_Loop [2021-10-28 09:43:26,213 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:43:26,213 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:43:26,214 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:26,216 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:26,222 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:26,226 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:26,260 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:43:26,260 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:43:26,260 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:26,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:26,267 INFO L229 MonitoredProcess]: Starting monitored process 126 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:26,269 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:43:26,269 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:43:26,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (126)] Waiting until timeout for monitored process [2021-10-28 09:43:26,291 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:43:26,291 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: [] [2021-10-28 09:43:26,314 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (126)] Ended with exit code 0 [2021-10-28 09:43:26,314 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:26,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:26,315 INFO L229 MonitoredProcess]: Starting monitored process 127 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:26,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (127)] Waiting until timeout for monitored process [2021-10-28 09:43:26,317 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:43:26,317 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:43:26,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (127)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:26,344 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:26,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:26,345 INFO L229 MonitoredProcess]: Starting monitored process 128 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:26,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (128)] Waiting until timeout for monitored process [2021-10-28 09:43:26,348 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:43:26,348 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:43:26,357 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:43:26,376 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (128)] Ended with exit code 0 [2021-10-28 09:43:26,376 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:43:26,377 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:43:26,377 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:43:26,377 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:43:26,377 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:43:26,377 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:26,377 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:43:26,377 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:43:26,377 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration26_Loop [2021-10-28 09:43:26,377 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:43:26,377 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:43:26,377 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:26,383 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:26,386 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:26,388 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:43:26,425 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:43:26,425 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:43:26,426 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:26,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:26,427 INFO L229 MonitoredProcess]: Starting monitored process 129 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:26,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (129)] Waiting until timeout for monitored process [2021-10-28 09:43:26,428 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 [2021-10-28 09:43:26,435 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:43:26,435 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:43:26,435 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:43:26,435 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:43:26,435 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:43:26,436 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:43:26,436 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:43:26,448 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:43:26,450 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 09:43:26,450 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 09:43:26,450 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:26,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:26,451 INFO L229 MonitoredProcess]: Starting monitored process 130 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:26,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (130)] Waiting until timeout for monitored process [2021-10-28 09:43:26,452 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:43:26,452 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:43:26,452 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:43:26,452 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-28 09:43:26,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (129)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:26,471 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:43:26,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:26,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:26,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:43:26,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:26,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:26,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-28 09:43:26,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:26,929 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 494 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-28 09:43:26,930 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 [2021-10-28 09:43:26,930 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) [2021-10-28 09:43:27,401 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. [2021-10-28 09:43:27,402 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 [2021-10-28 09:43:27,402 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) [2021-10-28 09:43:27,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 97 transitions. [2021-10-28 09:43:27,403 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 22 states and 97 transitions. Stem has 44 letters. Loop has 76 letters. [2021-10-28 09:43:27,403 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:43:27,404 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 22 states and 97 transitions. Stem has 120 letters. Loop has 76 letters. [2021-10-28 09:43:27,431 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:43:27,436 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 22 states and 97 transitions. Stem has 44 letters. Loop has 152 letters. [2021-10-28 09:43:27,437 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:43:27,437 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1239 states and 1496 transitions. [2021-10-28 09:43:27,460 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 80 [2021-10-28 09:43:27,465 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1239 states to 787 states and 932 transitions. [2021-10-28 09:43:27,465 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 168 [2021-10-28 09:43:27,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (130)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:27,471 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 172 [2021-10-28 09:43:27,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 787 states and 932 transitions. [2021-10-28 09:43:27,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:43:27,472 INFO L681 BuchiCegarLoop]: Abstraction has 787 states and 932 transitions. [2021-10-28 09:43:27,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states and 932 transitions. [2021-10-28 09:43:27,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 401. [2021-10-28 09:43:27,481 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) [2021-10-28 09:43:27,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 456 transitions. [2021-10-28 09:43:27,483 INFO L704 BuchiCegarLoop]: Abstraction has 401 states and 456 transitions. [2021-10-28 09:43:27,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:43:27,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 09:43:27,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:43:27,484 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) [2021-10-28 09:43:27,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:43:27,565 INFO L93 Difference]: Finished difference Result 405 states and 418 transitions. [2021-10-28 09:43:27,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:43:27,565 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 405 states and 418 transitions. [2021-10-28 09:43:27,568 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 80 [2021-10-28 09:43:27,570 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 405 states to 292 states and 305 transitions. [2021-10-28 09:43:27,570 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 178 [2021-10-28 09:43:27,570 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 284 [2021-10-28 09:43:27,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 292 states and 305 transitions. [2021-10-28 09:43:27,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:43:27,571 INFO L681 BuchiCegarLoop]: Abstraction has 292 states and 305 transitions. [2021-10-28 09:43:27,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states and 305 transitions. [2021-10-28 09:43:27,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 169. [2021-10-28 09:43:27,574 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) [2021-10-28 09:43:27,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 182 transitions. [2021-10-28 09:43:27,575 INFO L704 BuchiCegarLoop]: Abstraction has 169 states and 182 transitions. [2021-10-28 09:43:27,575 INFO L587 BuchiCegarLoop]: Abstraction has 169 states and 182 transitions. [2021-10-28 09:43:27,575 INFO L425 BuchiCegarLoop]: ======== Iteration 27============ [2021-10-28 09:43:27,575 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 169 states and 182 transitions. [2021-10-28 09:43:27,576 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 80 [2021-10-28 09:43:27,576 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:43:27,576 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:43:27,577 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2021-10-28 09:43:27,577 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [20, 19, 19, 10, 10, 1, 1] [2021-10-28 09:43:27,577 INFO L791 eck$LassoCheckResult]: Stem: 27494#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 27495#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27493#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 27487#L12-2 assume !(main_~i~0 <= 0); 27488#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 27491#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27492#L12 assume !(main_~i~0 >= 10); 27485#L12-2 [2021-10-28 09:43:27,577 INFO L793 eck$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 [2021-10-28 09:43:27,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:27,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1365704114, now seen corresponding path program 1 times [2021-10-28 09:43:27,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:27,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270908827] [2021-10-28 09:43:27,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:27,579 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:27,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:27,586 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:43:27,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:27,588 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:43:27,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:27,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1260641161, now seen corresponding path program 18 times [2021-10-28 09:43:27,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:27,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033771897] [2021-10-28 09:43:27,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:27,589 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:27,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:27,601 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:43:27,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:27,610 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:43:27,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:27,610 INFO L85 PathProgramCache]: Analyzing trace with hash -689456170, now seen corresponding path program 17 times [2021-10-28 09:43:27,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:27,611 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492267361] [2021-10-28 09:43:27,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:27,611 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:27,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:27,623 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:43:27,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:27,632 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:43:28,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 09:43:28 BoogieIcfgContainer [2021-10-28 09:43:28,241 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 09:43:28,242 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:43:28,242 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:43:28,242 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:43:28,243 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:42:58" (3/4) ... [2021-10-28 09:43:28,246 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-28 09:43:28,296 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:43:28,296 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:43:28,297 INFO L168 Benchmark]: Toolchain (without parser) took 30578.21 ms. Allocated memory was 100.7 MB in the beginning and 524.3 MB in the end (delta: 423.6 MB). Free memory was 62.0 MB in the beginning and 214.2 MB in the end (delta: -152.1 MB). Peak memory consumption was 271.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:43:28,298 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 100.7 MB. Free memory is still 78.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:43:28,298 INFO L168 Benchmark]: CACSL2BoogieTranslator took 205.71 ms. Allocated memory is still 100.7 MB. Free memory was 61.8 MB in the beginning and 77.5 MB in the end (delta: -15.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:43:28,299 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.64 ms. Allocated memory is still 100.7 MB. Free memory was 77.5 MB in the beginning and 76.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:43:28,299 INFO L168 Benchmark]: Boogie Preprocessor took 26.97 ms. Allocated memory is still 100.7 MB. Free memory was 76.3 MB in the beginning and 75.5 MB in the end (delta: 810.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:43:28,300 INFO L168 Benchmark]: RCFGBuilder took 228.54 ms. Allocated memory is still 100.7 MB. Free memory was 75.4 MB in the beginning and 67.6 MB in the end (delta: 7.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:43:28,300 INFO L168 Benchmark]: BuchiAutomizer took 30009.13 ms. Allocated memory was 100.7 MB in the beginning and 524.3 MB in the end (delta: 423.6 MB). Free memory was 67.2 MB in the beginning and 217.4 MB in the end (delta: -150.2 MB). Peak memory consumption was 340.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:43:28,300 INFO L168 Benchmark]: Witness Printer took 53.97 ms. Allocated memory is still 524.3 MB. Free memory was 217.4 MB in the beginning and 214.2 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:43:28,302 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 100.7 MB. Free memory is still 78.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 205.71 ms. Allocated memory is still 100.7 MB. Free memory was 61.8 MB in the beginning and 77.5 MB in the end (delta: -15.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.64 ms. Allocated memory is still 100.7 MB. Free memory was 77.5 MB in the beginning and 76.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.97 ms. Allocated memory is still 100.7 MB. Free memory was 76.3 MB in the beginning and 75.5 MB in the end (delta: 810.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 228.54 ms. Allocated memory is still 100.7 MB. Free memory was 75.4 MB in the beginning and 67.6 MB in the end (delta: 7.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 30009.13 ms. Allocated memory was 100.7 MB in the beginning and 524.3 MB in the end (delta: 423.6 MB). Free memory was 67.2 MB in the beginning and 217.4 MB in the end (delta: -150.2 MB). Peak memory consumption was 340.4 MB. Max. memory is 16.1 GB. * Witness Printer took 53.97 ms. Allocated memory is still 524.3 MB. Free memory was 217.4 MB in the beginning and 214.2 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 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 29.9s and 27 iterations. TraceHistogramMax:20. Analysis of lassos took 21.8s. Construction of modules took 1.4s. Büchi inclusion checks took 5.9s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 36. Automata minimization 0.2s 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, 1.4s 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: 58ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 23 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 15 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.9s - 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@56ff1b36=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! [2021-10-28 09:43:28,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:28,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:28,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:28,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:29,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:29,360 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2021-10-28 09:43:29,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:29,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2021-10-28 09:43:29,960 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2021-10-28 09:43:30,160 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2021-10-28 09:43:30,361 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2021-10-28 09:43:30,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:30,762 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2021-10-28 09:43:30,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:31,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:31,362 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2021-10-28 09:43:31,562 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2021-10-28 09:43:31,762 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2021-10-28 09:43:31,962 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2021-10-28 09:43:32,163 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2021-10-28 09:43:32,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:32,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:32,763 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2021-10-28 09:43:32,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:33,163 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2021-10-28 09:43:33,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:33,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bceac251-920f-4c24-99f2-6a31612dd4fc/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...