./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.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_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/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_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/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_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/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 33be026e9ca846df0a8faa91fc9c2bbf64ee20dbba0f4f48a9cd42fbefb372d5 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:48:13,325 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:48:13,328 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:48:13,365 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:48:13,366 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:48:13,367 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:48:13,369 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:48:13,372 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:48:13,375 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:48:13,376 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:48:13,377 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:48:13,379 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:48:13,380 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:48:13,381 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:48:13,383 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:48:13,398 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:48:13,399 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:48:13,400 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:48:13,402 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:48:13,405 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:48:13,407 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:48:13,409 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:48:13,411 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:48:13,412 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:48:13,416 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:48:13,416 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:48:13,417 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:48:13,418 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:48:13,418 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:48:13,420 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:48:13,420 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:48:13,428 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:48:13,430 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:48:13,431 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:48:13,433 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:48:13,434 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:48:13,435 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:48:13,435 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:48:13,436 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:48:13,439 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:48:13,440 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:48:13,441 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-28 09:48:13,478 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:48:13,479 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:48:13,479 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:48:13,479 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:48:13,481 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:48:13,481 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:48:13,482 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:48:13,482 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 09:48:13,482 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 09:48:13,482 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 09:48:13,483 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 09:48:13,484 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 09:48:13,484 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 09:48:13,484 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:48:13,484 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:48:13,485 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:48:13,485 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:48:13,485 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 09:48:13,485 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 09:48:13,485 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 09:48:13,486 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:48:13,486 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 09:48:13,486 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:48:13,486 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 09:48:13,487 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:48:13,487 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:48:13,488 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:48:13,489 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:48:13,489 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:48:13,490 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 09:48:13,491 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_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 33be026e9ca846df0a8faa91fc9c2bbf64ee20dbba0f4f48a9cd42fbefb372d5 [2021-10-28 09:48:13,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:48:13,773 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:48:13,776 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:48:13,778 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:48:13,778 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:48:13,779 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2021-10-28 09:48:13,845 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/data/2b56bd216/a422d86443f64576aa282388f2a4e7c2/FLAGda268d8d3 [2021-10-28 09:48:14,327 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:48:14,327 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2021-10-28 09:48:14,334 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/data/2b56bd216/a422d86443f64576aa282388f2a4e7c2/FLAGda268d8d3 [2021-10-28 09:48:14,723 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/data/2b56bd216/a422d86443f64576aa282388f2a4e7c2 [2021-10-28 09:48:14,733 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:48:14,736 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:48:14,740 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:48:14,740 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:48:14,743 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:48:14,745 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:48:14" (1/1) ... [2021-10-28 09:48:14,747 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b2936ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:14, skipping insertion in model container [2021-10-28 09:48:14,747 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:48:14" (1/1) ... [2021-10-28 09:48:14,756 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:48:14,771 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:48:14,898 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:48:14,902 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:48:14,917 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:48:14,929 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:48:14,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:14 WrapperNode [2021-10-28 09:48:14,930 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:48:14,931 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:48:14,932 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:48:14,932 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:48:14,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:14" (1/1) ... [2021-10-28 09:48:14,944 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:14" (1/1) ... [2021-10-28 09:48:14,962 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:48:14,963 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:48:14,963 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:48:14,963 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:48:14,971 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:14" (1/1) ... [2021-10-28 09:48:14,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:14" (1/1) ... [2021-10-28 09:48:14,972 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:14" (1/1) ... [2021-10-28 09:48:14,972 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:14" (1/1) ... [2021-10-28 09:48:14,974 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:14" (1/1) ... [2021-10-28 09:48:14,978 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:14" (1/1) ... [2021-10-28 09:48:14,979 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:14" (1/1) ... [2021-10-28 09:48:14,980 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:48:14,981 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:48:14,982 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:48:14,982 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:48:14,983 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:14" (1/1) ... [2021-10-28 09:48:14,991 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:15,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:15,018 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:15,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 09:48:15,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:48:15,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:48:15,255 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:48:15,255 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-28 09:48:15,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:48:15 BoogieIcfgContainer [2021-10-28 09:48:15,258 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:48:15,261 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 09:48:15,262 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 09:48:15,266 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 09:48:15,267 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:48:15,267 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 09:48:14" (1/3) ... [2021-10-28 09:48:15,269 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5ec94596 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 09:48:15, skipping insertion in model container [2021-10-28 09:48:15,269 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:48:15,269 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:14" (2/3) ... [2021-10-28 09:48:15,270 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5ec94596 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 09:48:15, skipping insertion in model container [2021-10-28 09:48:15,270 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:48:15,270 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:48:15" (3/3) ... [2021-10-28 09:48:15,272 INFO L389 chiAutomizerObserver]: Analyzing ICFG LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2021-10-28 09:48:15,339 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 09:48:15,339 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 09:48:15,340 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 09:48:15,340 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 09:48:15,340 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 09:48:15,340 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 09:48:15,340 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 09:48:15,340 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 09:48:15,356 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 09:48:15,380 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-28 09:48:15,381 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:48:15,381 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:48:15,387 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:48:15,387 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 09:48:15,387 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 09:48:15,388 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 09:48:15,389 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-28 09:48:15,389 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:48:15,389 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:48:15,390 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:48:15,390 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 09:48:15,398 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 6#L21true assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 8#L22-2true [2021-10-28 09:48:15,400 INFO L793 eck$LassoCheckResult]: Loop: 8#L22-2true assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 5#L24-2true assume !(main_~y~0 < main_~z~0); 9#L24-3true main_~y~0 := main_~x~0 + main_~y~0; 8#L22-2true [2021-10-28 09:48:15,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:15,411 INFO L85 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2021-10-28 09:48:15,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:48:15,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925677319] [2021-10-28 09:48:15,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:15,423 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:48:15,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:15,507 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:48:15,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:15,534 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:48:15,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:15,538 INFO L85 PathProgramCache]: Analyzing trace with hash 42930, now seen corresponding path program 1 times [2021-10-28 09:48:15,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:48:15,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442472155] [2021-10-28 09:48:15,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:15,553 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:48:15,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:15,573 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:48:15,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:15,587 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:48:15,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:15,590 INFO L85 PathProgramCache]: Analyzing trace with hash 29684975, now seen corresponding path program 1 times [2021-10-28 09:48:15,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:48:15,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038185365] [2021-10-28 09:48:15,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:15,592 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:48:15,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:15,609 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:48:15,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:15,631 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:48:15,798 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:48:15,799 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:48:15,799 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:48:15,799 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:48:15,799 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:48:15,799 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:15,800 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:48:15,800 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:48:15,800 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration1_Loop [2021-10-28 09:48:15,800 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:48:15,800 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:48:15,828 INFO 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 09:48:15,850 INFO 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 09:48:15,861 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:15,937 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:48:15,937 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:48:15,940 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:15,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:15,942 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:15,953 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:48:15,953 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:15,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-28 09:48:15,972 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:48:15,972 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 09:48:15,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:15,992 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:15,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:15,994 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:15,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-28 09:48:15,996 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:48:15,996 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:16,009 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:48:16,009 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 09:48:16,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:16,032 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:16,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:16,033 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:16,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-28 09:48:16,035 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:48:16,035 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:16,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:16,077 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:16,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:16,078 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:16,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-28 09:48:16,081 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:48:16,081 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:16,301 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:48:16,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:16,304 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:48:16,304 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:48:16,304 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:48:16,305 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:48:16,305 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:48:16,305 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:16,305 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:48:16,305 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:48:16,305 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration1_Loop [2021-10-28 09:48:16,305 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:48:16,305 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:48:16,307 INFO 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 09:48:16,312 INFO 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 09:48:16,315 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:16,375 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:48:16,380 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:48:16,382 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:16,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:16,383 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:16,398 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 09:48:16,407 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:48:16,408 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:48:16,408 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:48:16,408 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:48:16,415 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:48:16,415 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:48:16,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-28 09:48:16,437 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:48:16,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:16,473 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:16,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:16,477 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:16,483 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 09:48:16,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-28 09:48:16,493 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:48:16,493 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:48:16,493 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:48:16,493 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:48:16,497 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:48:16,497 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:48:16,512 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:48:16,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:16,535 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:16,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:16,536 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:16,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-28 09:48:16,539 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 09:48:16,546 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:48:16,546 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:48:16,547 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:48:16,547 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:48:16,547 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:48:16,550 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:48:16,550 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:48:16,571 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:48:16,590 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2021-10-28 09:48:16,590 INFO L490 LassoAnalysis]: Using template '2-nested'. [2021-10-28 09:48:16,591 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:16,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:16,592 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:16,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-28 09:48:16,596 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 09:48:16,605 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:48:16,605 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:48:16,606 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:48:16,606 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2021-10-28 09:48:16,616 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2021-10-28 09:48:16,616 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2021-10-28 09:48:16,633 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:48:16,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:16,669 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:16,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:16,671 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:16,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-28 09:48:16,684 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 09:48:16,694 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:48:16,694 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:48:16,694 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:48:16,695 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2021-10-28 09:48:16,700 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2021-10-28 09:48:16,708 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2021-10-28 09:48:16,734 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:48:16,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:16,770 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:16,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:16,770 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:16,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-28 09:48:16,772 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 09:48:16,780 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:48:16,780 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:48:16,780 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:48:16,781 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:48:16,781 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2021-10-28 09:48:16,783 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2021-10-28 09:48:16,783 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:48:16,799 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:48:16,807 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-10-28 09:48:16,807 INFO L444 ModelExtractionUtils]: 5 out of 9 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 09:48:16,809 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:16,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:16,812 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:16,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-28 09:48:16,849 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:48:16,850 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:48:16,850 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:48:16,850 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*ULTIMATE.start_main_~x~0 f1 = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2021-10-28 09:48:16,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:16,872 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:48:16,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:16,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:16,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:48:16,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:16,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:16,954 WARN L261 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 09:48:16,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:17,291 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 09:48:17,306 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 09:48:17,307 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. 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 1.6666666666666667) 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 09:48:17,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:17,361 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. 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 1.6666666666666667) 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 34 states and 47 transitions. Complement of second has 8 states. [2021-10-28 09:48:17,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 09:48:17,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) 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 09:48:17,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 25 transitions. [2021-10-28 09:48:17,365 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 2 letters. Loop has 3 letters. [2021-10-28 09:48:17,366 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:48:17,366 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 5 letters. Loop has 3 letters. [2021-10-28 09:48:17,366 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:48:17,366 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 2 letters. Loop has 6 letters. [2021-10-28 09:48:17,366 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:48:17,367 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 47 transitions. [2021-10-28 09:48:17,370 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-28 09:48:17,374 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 10 states and 14 transitions. [2021-10-28 09:48:17,375 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2021-10-28 09:48:17,375 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-10-28 09:48:17,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 14 transitions. [2021-10-28 09:48:17,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:48:17,376 INFO L681 BuchiCegarLoop]: Abstraction has 10 states and 14 transitions. [2021-10-28 09:48:17,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 14 transitions. [2021-10-28 09:48:17,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-28 09:48:17,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.4) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:48:17,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 14 transitions. [2021-10-28 09:48:17,400 INFO L704 BuchiCegarLoop]: Abstraction has 10 states and 14 transitions. [2021-10-28 09:48:17,400 INFO L587 BuchiCegarLoop]: Abstraction has 10 states and 14 transitions. [2021-10-28 09:48:17,400 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 09:48:17,400 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 14 transitions. [2021-10-28 09:48:17,401 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-28 09:48:17,401 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:48:17,401 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:48:17,401 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-28 09:48:17,401 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-28 09:48:17,401 INFO L791 eck$LassoCheckResult]: Stem: 89#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 90#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 95#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 91#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 92#L24-2 [2021-10-28 09:48:17,402 INFO L793 eck$LassoCheckResult]: Loop: 92#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 92#L24-2 [2021-10-28 09:48:17,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:17,402 INFO L85 PathProgramCache]: Analyzing trace with hash 957581, now seen corresponding path program 1 times [2021-10-28 09:48:17,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:48:17,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918766731] [2021-10-28 09:48:17,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:17,403 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:48:17,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:17,411 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:48:17,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:17,419 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:48:17,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:17,419 INFO L85 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 1 times [2021-10-28 09:48:17,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:48:17,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311471199] [2021-10-28 09:48:17,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:17,420 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:48:17,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:17,425 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:48:17,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:17,429 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:48:17,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:17,430 INFO L85 PathProgramCache]: Analyzing trace with hash 29685033, now seen corresponding path program 2 times [2021-10-28 09:48:17,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:48:17,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095681433] [2021-10-28 09:48:17,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:17,430 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:48:17,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:17,440 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:48:17,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:17,449 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:48:17,468 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:48:17,468 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:48:17,468 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:48:17,468 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:48:17,469 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:48:17,469 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:17,469 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:48:17,469 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:48:17,469 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration2_Loop [2021-10-28 09:48:17,469 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:48:17,469 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:48:17,471 INFO 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 09:48:17,473 INFO 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 09:48:17,476 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:17,481 INFO 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 09:48:17,520 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:48:17,520 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:48:17,521 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:17,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:17,521 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:17,533 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:48:17,533 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:17,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-28 09:48:17,565 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:48:17,565 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 09:48:17,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:17,594 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:17,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:17,595 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:17,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-28 09:48:17,601 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:48:17,601 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:17,620 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:48:17,620 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 09:48:17,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:17,660 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:17,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:17,660 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:17,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-28 09:48:17,665 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:48:17,665 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:17,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:17,734 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:17,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:17,735 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:17,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-28 09:48:17,740 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:48:17,740 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:17,915 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:48:17,920 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2021-10-28 09:48:17,921 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:48:17,921 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:48:17,921 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:48:17,921 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:48:17,921 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:48:17,921 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:17,921 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:48:17,921 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:48:17,921 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration2_Loop [2021-10-28 09:48:17,921 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:48:17,921 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:48:17,922 INFO 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 09:48:17,926 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:17,937 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:17,943 INFO 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 09:48:17,987 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:48:17,987 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:48:17,987 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:17,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:17,988 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:18,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-28 09:48:18,017 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 09:48:18,026 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:48:18,027 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:48:18,027 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:48:18,027 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:48:18,029 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:48:18,029 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:48:18,048 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:48:18,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:18,129 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:18,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:18,130 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:18,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-10-28 09:48:18,133 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:48:18,143 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:48:18,143 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:48:18,143 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:48:18,144 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:48:18,149 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:48:18,149 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:48:18,164 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:48:18,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:18,204 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:18,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:18,205 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:18,216 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 09:48:18,226 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:48:18,226 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:48:18,226 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:48:18,226 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:48:18,226 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:48:18,228 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:48:18,228 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:48:18,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-10-28 09:48:18,240 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:48:18,247 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-10-28 09:48:18,247 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 09:48:18,247 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:18,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:18,248 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:18,260 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:48:18,260 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:48:18,261 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:48:18,261 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0) = -1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~z~0 Supporting invariants [] [2021-10-28 09:48:18,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-10-28 09:48:18,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:18,299 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:48:18,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:18,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:18,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:48:18,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:18,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:18,341 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:48:18,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:18,341 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 09:48:18,342 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-10-28 09:48:18,343 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 14 transitions. cyclomatic complexity: 6 Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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 09:48:18,358 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 14 transitions. cyclomatic complexity: 6. Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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 17 states and 28 transitions. Complement of second has 6 states. [2021-10-28 09:48:18,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-28 09:48:18,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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 09:48:18,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2021-10-28 09:48:18,360 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 1 letters. [2021-10-28 09:48:18,360 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:48:18,361 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 5 letters. Loop has 1 letters. [2021-10-28 09:48:18,361 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:48:18,361 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 2 letters. [2021-10-28 09:48:18,361 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:48:18,362 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 28 transitions. [2021-10-28 09:48:18,366 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-28 09:48:18,368 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 13 states and 19 transitions. [2021-10-28 09:48:18,368 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-10-28 09:48:18,368 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2021-10-28 09:48:18,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 19 transitions. [2021-10-28 09:48:18,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:48:18,369 INFO L681 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2021-10-28 09:48:18,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 19 transitions. [2021-10-28 09:48:18,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2021-10-28 09:48:18,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.5) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:48:18,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 18 transitions. [2021-10-28 09:48:18,373 INFO L704 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2021-10-28 09:48:18,374 INFO L587 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2021-10-28 09:48:18,374 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 09:48:18,374 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 18 transitions. [2021-10-28 09:48:18,376 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-28 09:48:18,377 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:48:18,377 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:48:18,378 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-10-28 09:48:18,379 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 09:48:18,380 INFO L791 eck$LassoCheckResult]: Stem: 152#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 153#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 157#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 160#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 163#L24-2 assume !(main_~y~0 < main_~z~0); 155#L24-3 [2021-10-28 09:48:18,381 INFO L793 eck$LassoCheckResult]: Loop: 155#L24-3 main_~y~0 := main_~x~0 + main_~y~0; 158#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 154#L24-2 assume !(main_~y~0 < main_~z~0); 155#L24-3 [2021-10-28 09:48:18,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:18,382 INFO L85 PathProgramCache]: Analyzing trace with hash 29685031, now seen corresponding path program 1 times [2021-10-28 09:48:18,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:48:18,382 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691464773] [2021-10-28 09:48:18,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:18,382 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:48:18,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:18,391 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:48:18,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:18,401 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:48:18,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:18,402 INFO L85 PathProgramCache]: Analyzing trace with hash 55200, now seen corresponding path program 2 times [2021-10-28 09:48:18,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:48:18,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426205822] [2021-10-28 09:48:18,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:18,403 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:48:18,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:18,407 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:48:18,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:18,423 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:48:18,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:18,424 INFO L85 PathProgramCache]: Analyzing trace with hash -416479046, now seen corresponding path program 1 times [2021-10-28 09:48:18,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:48:18,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634200447] [2021-10-28 09:48:18,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:18,425 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:48:18,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:18,437 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:48:18,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:18,457 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:48:18,487 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:48:18,487 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:48:18,487 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:48:18,487 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:48:18,487 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:48:18,487 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:18,487 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:48:18,487 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:48:18,487 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration3_Loop [2021-10-28 09:48:18,488 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:48:18,488 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:48:18,489 INFO 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 09:48:18,492 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 09:48:18,509 INFO 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 09:48:18,552 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:48:18,553 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:48:18,553 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:18,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:18,554 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:18,556 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:48:18,556 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:18,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-10-28 09:48:18,575 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:48:18,575 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 09:48:18,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:18,605 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:18,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:18,606 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:18,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-10-28 09:48:18,607 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:48:18,608 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:18,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:18,647 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:18,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:18,651 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:18,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-10-28 09:48:18,652 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:48:18,652 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:18,870 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:48:18,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:18,874 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:48:18,874 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:48:18,874 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:48:18,874 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:48:18,874 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:48:18,874 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:18,874 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:48:18,874 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:48:18,874 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration3_Loop [2021-10-28 09:48:18,874 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:48:18,874 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:48:18,875 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:18,889 INFO 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 09:48:18,903 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 09:48:18,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:18,964 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:48:18,964 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:48:18,964 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:18,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:18,969 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:18,982 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 09:48:18,991 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:48:18,991 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:48:18,992 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:48:18,992 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:48:18,992 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:48:18,993 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:48:18,994 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:48:18,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-10-28 09:48:19,008 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:48:19,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:19,044 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:19,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:19,045 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:19,048 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 09:48:19,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-10-28 09:48:19,057 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:48:19,057 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:48:19,057 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:48:19,057 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:48:19,059 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:48:19,059 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:48:19,084 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:48:19,106 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2021-10-28 09:48:19,106 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:19,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:19,107 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:19,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-10-28 09:48:19,109 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:48:19,116 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:48:19,117 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:48:19,117 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:48:19,117 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:48:19,118 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:48:19,118 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:48:19,121 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:48:19,146 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2021-10-28 09:48:19,146 INFO L490 LassoAnalysis]: Using template '2-nested'. [2021-10-28 09:48:19,146 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:19,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:19,147 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:19,149 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 09:48:19,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-10-28 09:48:19,157 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:48:19,157 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:48:19,157 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:48:19,157 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:48:19,157 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2021-10-28 09:48:19,159 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2021-10-28 09:48:19,159 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:48:19,176 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:48:19,205 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2021-10-28 09:48:19,205 INFO L444 ModelExtractionUtils]: 3 out of 9 variables were initially zero. Simplification set additionally 2 variables to zero. [2021-10-28 09:48:19,206 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:19,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:19,213 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:19,218 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:48:19,218 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:48:19,218 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:48:19,218 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*ULTIMATE.start_main_~x~0 f1 = 1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2021-10-28 09:48:19,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-10-28 09:48:19,244 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2021-10-28 09:48:19,244 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:48:19,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:19,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:19,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:48:19,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:19,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:19,296 WARN L261 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 09:48:19,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:19,544 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 09:48:19,545 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 09:48:19,545 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 18 transitions. cyclomatic complexity: 9 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 09:48:19,583 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 18 transitions. cyclomatic complexity: 9. 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 30 states and 45 transitions. Complement of second has 8 states. [2021-10-28 09:48:19,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 09:48:19,584 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 09:48:19,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 15 transitions. [2021-10-28 09:48:19,586 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 5 letters. Loop has 3 letters. [2021-10-28 09:48:19,586 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:48:19,586 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 8 letters. Loop has 3 letters. [2021-10-28 09:48:19,587 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:48:19,587 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 5 letters. Loop has 6 letters. [2021-10-28 09:48:19,587 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:48:19,588 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 45 transitions. [2021-10-28 09:48:19,591 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-28 09:48:19,596 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 22 states and 33 transitions. [2021-10-28 09:48:19,596 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2021-10-28 09:48:19,597 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2021-10-28 09:48:19,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 33 transitions. [2021-10-28 09:48:19,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:48:19,597 INFO L681 BuchiCegarLoop]: Abstraction has 22 states and 33 transitions. [2021-10-28 09:48:19,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 33 transitions. [2021-10-28 09:48:19,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2021-10-28 09:48:19,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 17 states have internal predecessors, (26), 0 states have call successors, (0), 0 states 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 09:48:19,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 26 transitions. [2021-10-28 09:48:19,602 INFO L704 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2021-10-28 09:48:19,603 INFO L587 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2021-10-28 09:48:19,603 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 09:48:19,603 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 26 transitions. [2021-10-28 09:48:19,605 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-28 09:48:19,605 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:48:19,605 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:48:19,606 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2021-10-28 09:48:19,606 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-28 09:48:19,606 INFO L791 eck$LassoCheckResult]: Stem: 247#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 248#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 253#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 263#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 261#L24-2 assume !(main_~y~0 < main_~z~0); 260#L24-3 main_~y~0 := main_~x~0 + main_~y~0; 257#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 259#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 258#L24-2 [2021-10-28 09:48:19,606 INFO L793 eck$LassoCheckResult]: Loop: 258#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 258#L24-2 [2021-10-28 09:48:19,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:19,608 INFO L85 PathProgramCache]: Analyzing trace with hash -416479044, now seen corresponding path program 2 times [2021-10-28 09:48:19,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:48:19,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470663911] [2021-10-28 09:48:19,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:19,609 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:48:19,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:19,619 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:48:19,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:19,629 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:48:19,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:19,630 INFO L85 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 2 times [2021-10-28 09:48:19,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:48:19,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922909664] [2021-10-28 09:48:19,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:19,631 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:48:19,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:19,634 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:48:19,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:19,637 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:48:19,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:19,638 INFO L85 PathProgramCache]: Analyzing trace with hash -25948454, now seen corresponding path program 3 times [2021-10-28 09:48:19,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:48:19,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155955411] [2021-10-28 09:48:19,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:19,639 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:48:19,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:19,648 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:48:19,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:19,658 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:48:19,675 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:48:19,675 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:48:19,675 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:48:19,675 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:48:19,675 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:48:19,675 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:19,676 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:48:19,676 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:48:19,676 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration4_Loop [2021-10-28 09:48:19,676 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:48:19,676 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:48:19,677 INFO 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 09:48:19,681 INFO 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 09:48:19,685 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:19,688 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:19,731 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:48:19,731 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:48:19,731 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:19,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:19,733 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:19,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-10-28 09:48:19,748 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:48:19,748 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:19,761 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:48:19,761 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:48:19,780 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2021-10-28 09:48:19,780 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:19,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:19,781 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:19,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-10-28 09:48:19,789 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:48:19,790 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:19,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:19,860 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:19,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:19,861 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:19,863 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:48:19,863 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:19,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-10-28 09:48:20,050 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:48:20,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:20,053 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:48:20,053 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:48:20,053 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:48:20,053 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:48:20,053 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:48:20,053 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:20,053 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:48:20,053 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:48:20,053 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration4_Loop [2021-10-28 09:48:20,053 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:48:20,053 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:48:20,054 INFO 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 09:48:20,078 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:20,081 INFO 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 09:48:20,102 INFO 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 09:48:20,143 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:48:20,143 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:48:20,143 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:20,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:20,145 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:20,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:20,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-10-28 09:48:20,173 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 09:48:20,182 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:48:20,182 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:48:20,182 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:48:20,182 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:48:20,182 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:48:20,183 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:48:20,183 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:48:20,204 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:48:20,209 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-10-28 09:48:20,209 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 09:48:20,209 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:20,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:20,210 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:20,217 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:48:20,217 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:48:20,217 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:48:20,217 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~z~0 - 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2021-10-28 09:48:20,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-10-28 09:48:20,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:20,256 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:48:20,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:20,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:20,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:48:20,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:20,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:20,310 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:48:20,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:20,310 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 09:48:20,311 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-10-28 09:48:20,311 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 13 Second operand has 2 states, 2 states have (on average 4.0) 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 09:48:20,319 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 13. Second operand has 2 states, 2 states have (on average 4.0) 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) Result 21 states and 30 transitions. Complement of second has 5 states. [2021-10-28 09:48:20,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-28 09:48:20,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) 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 09:48:20,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2021-10-28 09:48:20,320 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 1 letters. [2021-10-28 09:48:20,321 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:48:20,321 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 09:48:20,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:20,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:20,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:48:20,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:20,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:20,364 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:48:20,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:20,365 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 09:48:20,366 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2021-10-28 09:48:20,366 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 13 Second operand has 2 states, 2 states have (on average 4.0) 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 09:48:20,380 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 13. Second operand has 2 states, 2 states have (on average 4.0) 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) Result 21 states and 30 transitions. Complement of second has 5 states. [2021-10-28 09:48:20,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-28 09:48:20,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) 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 09:48:20,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2021-10-28 09:48:20,382 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 1 letters. [2021-10-28 09:48:20,382 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:48:20,382 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 09:48:20,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:20,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:20,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:48:20,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:20,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:20,430 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:48:20,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:20,431 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 09:48:20,431 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 1 loop predicates [2021-10-28 09:48:20,431 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 13 Second operand has 2 states, 2 states have (on average 4.0) 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 09:48:20,443 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 13. Second operand has 2 states, 2 states have (on average 4.0) 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) Result 29 states and 45 transitions. Complement of second has 5 states. [2021-10-28 09:48:20,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-28 09:48:20,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) 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 09:48:20,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2021-10-28 09:48:20,445 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 8 letters. Loop has 1 letters. [2021-10-28 09:48:20,446 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:48:20,446 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 9 letters. Loop has 1 letters. [2021-10-28 09:48:20,446 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:48:20,446 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 8 letters. Loop has 2 letters. [2021-10-28 09:48:20,446 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:48:20,446 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 45 transitions. [2021-10-28 09:48:20,449 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-10-28 09:48:20,450 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 22 states and 31 transitions. [2021-10-28 09:48:20,450 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2021-10-28 09:48:20,451 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2021-10-28 09:48:20,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 31 transitions. [2021-10-28 09:48:20,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:48:20,451 INFO L681 BuchiCegarLoop]: Abstraction has 22 states and 31 transitions. [2021-10-28 09:48:20,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 31 transitions. [2021-10-28 09:48:20,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2021-10-28 09:48:20,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 17 states have internal predecessors, (26), 0 states have call successors, (0), 0 states 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 09:48:20,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 26 transitions. [2021-10-28 09:48:20,455 INFO L704 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2021-10-28 09:48:20,455 INFO L587 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2021-10-28 09:48:20,455 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-28 09:48:20,455 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 26 transitions. [2021-10-28 09:48:20,456 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 09:48:20,456 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:48:20,456 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:48:20,457 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2021-10-28 09:48:20,457 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 09:48:20,457 INFO L791 eck$LassoCheckResult]: Stem: 447#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 448#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 453#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 451#L24-2 assume !(main_~y~0 < main_~z~0); 452#L24-3 main_~y~0 := main_~x~0 + main_~y~0; 456#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 449#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 450#L24-2 assume !(main_~y~0 < main_~z~0); 454#L24-3 [2021-10-28 09:48:20,457 INFO L793 eck$LassoCheckResult]: Loop: 454#L24-3 main_~y~0 := main_~x~0 + main_~y~0; 455#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 459#L24-2 assume !(main_~y~0 < main_~z~0); 454#L24-3 [2021-10-28 09:48:20,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:20,458 INFO L85 PathProgramCache]: Analyzing trace with hash -418159556, now seen corresponding path program 4 times [2021-10-28 09:48:20,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:48:20,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566985911] [2021-10-28 09:48:20,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:20,461 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:48:20,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:20,485 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:48:20,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:20,492 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:48:20,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:20,492 INFO L85 PathProgramCache]: Analyzing trace with hash 55200, now seen corresponding path program 3 times [2021-10-28 09:48:20,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:48:20,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422965734] [2021-10-28 09:48:20,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:20,493 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:48:20,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:20,501 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:48:20,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:20,513 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:48:20,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:20,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1986148987, now seen corresponding path program 5 times [2021-10-28 09:48:20,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:48:20,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569567178] [2021-10-28 09:48:20,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:20,515 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:48:20,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:20,613 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:48:20,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:48:20,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569567178] [2021-10-28 09:48:20,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569567178] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:48:20,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827681802] [2021-10-28 09:48:20,614 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 09:48:20,615 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:48:20,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:20,621 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:48:20,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-10-28 09:48:20,677 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-28 09:48:20,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:48:20,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 09:48:20,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:20,772 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:48:20,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827681802] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:48:20,772 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:48:20,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-10-28 09:48:20,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256827831] [2021-10-28 09:48:20,802 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:48:20,802 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:48:20,802 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:48:20,803 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:48:20,803 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:48:20,803 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:20,803 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:48:20,803 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:48:20,803 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration5_Loop [2021-10-28 09:48:20,803 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:48:20,803 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:48:20,804 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:20,807 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:20,810 INFO 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 09:48:20,862 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:48:20,862 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:48:20,862 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:20,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:20,865 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:20,866 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:48:20,866 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:20,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-10-28 09:48:20,885 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:48:20,886 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 09:48:20,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:20,923 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:20,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:20,924 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:20,930 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:48:20,930 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:20,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-10-28 09:48:20,961 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:48:20,961 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 09:48:20,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:20,994 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:20,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:20,997 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:20,999 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:48:20,999 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:21,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-10-28 09:48:21,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:21,065 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:21,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:21,066 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:21,068 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:48:21,068 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:21,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-10-28 09:48:21,288 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:48:21,291 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2021-10-28 09:48:21,291 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:48:21,291 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:48:21,291 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:48:21,291 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:48:21,291 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:48:21,291 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:21,292 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:48:21,292 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:48:21,292 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration5_Loop [2021-10-28 09:48:21,292 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:48:21,292 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:48:21,293 INFO 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 09:48:21,301 INFO 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 09:48:21,303 INFO 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 09:48:21,352 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:48:21,352 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:48:21,353 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:21,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:21,353 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:21,370 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 09:48:21,379 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:48:21,379 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:48:21,379 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:48:21,379 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:48:21,381 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:48:21,381 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:48:21,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2021-10-28 09:48:21,393 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:48:21,426 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Ended with exit code 0 [2021-10-28 09:48:21,426 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:21,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:21,427 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:21,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-10-28 09:48:21,432 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 09:48:21,439 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:48:21,440 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:48:21,440 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:48:21,440 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:48:21,443 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:48:21,443 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:48:21,464 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:48:21,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:21,498 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:21,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:21,504 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:21,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-10-28 09:48:21,507 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 09:48:21,514 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:48:21,514 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:48:21,514 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:48:21,514 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:48:21,514 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:48:21,515 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:48:21,516 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:48:21,529 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:48:21,566 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2021-10-28 09:48:21,566 INFO L490 LassoAnalysis]: Using template '2-nested'. [2021-10-28 09:48:21,566 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:21,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:21,567 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:21,569 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 09:48:21,579 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:48:21,579 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:48:21,579 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:48:21,579 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2021-10-28 09:48:21,582 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2021-10-28 09:48:21,582 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2021-10-28 09:48:21,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-10-28 09:48:21,593 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:48:21,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:21,632 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:21,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:21,633 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:21,637 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 09:48:21,646 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:48:21,646 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:48:21,646 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:48:21,647 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2021-10-28 09:48:21,649 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2021-10-28 09:48:21,649 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2021-10-28 09:48:21,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-10-28 09:48:21,672 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:48:21,694 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Ended with exit code 0 [2021-10-28 09:48:21,694 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:21,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:21,695 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:21,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-10-28 09:48:21,697 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 09:48:21,704 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:48:21,704 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:48:21,704 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:48:21,704 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:48:21,704 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2021-10-28 09:48:21,707 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2021-10-28 09:48:21,707 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:48:21,715 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:48:21,721 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2021-10-28 09:48:21,721 INFO L444 ModelExtractionUtils]: 3 out of 9 variables were initially zero. Simplification set additionally 2 variables to zero. [2021-10-28 09:48:21,721 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:21,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:21,722 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:21,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2021-10-28 09:48:21,723 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:48:21,723 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:48:21,723 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:48:21,723 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*ULTIMATE.start_main_~x~0 f1 = 1*ULTIMATE.start_main_~x~0 + 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2021-10-28 09:48:21,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:21,744 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:48:21,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:21,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:21,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:48:21,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:21,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:21,792 WARN L261 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 09:48:21,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:21,852 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Ended with exit code 0 [2021-10-28 09:48:21,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:22,091 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 09:48:22,092 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 09:48:22,092 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 12 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 09:48:22,125 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 12. 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 26 states and 37 transitions. Complement of second has 7 states. [2021-10-28 09:48:22,125 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 09:48:22,126 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 09:48:22,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2021-10-28 09:48:22,127 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 8 letters. Loop has 3 letters. [2021-10-28 09:48:22,127 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:48:22,127 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 09:48:22,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:22,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:22,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:48:22,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:22,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:22,185 WARN L261 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 09:48:22,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:22,354 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 09:48:22,355 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2021-10-28 09:48:22,355 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 12 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 09:48:22,384 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 12. 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 24 states and 32 transitions. Complement of second has 7 states. [2021-10-28 09:48:22,385 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 09:48:22,385 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 09:48:22,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2021-10-28 09:48:22,387 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 8 letters. Loop has 3 letters. [2021-10-28 09:48:22,387 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:48:22,387 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 09:48:22,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:22,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:22,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:48:22,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:22,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:22,432 WARN L261 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 09:48:22,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:22,615 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 09:48:22,616 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 3 loop predicates [2021-10-28 09:48:22,616 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 12 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 09:48:22,646 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 12. 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 31 states and 43 transitions. Complement of second has 6 states. [2021-10-28 09:48:22,655 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 09:48:22,655 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 09:48:22,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2021-10-28 09:48:22,656 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 8 letters. Loop has 3 letters. [2021-10-28 09:48:22,659 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:48:22,660 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 11 letters. Loop has 3 letters. [2021-10-28 09:48:22,660 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:48:22,661 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 8 letters. Loop has 6 letters. [2021-10-28 09:48:22,661 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:48:22,661 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 43 transitions. [2021-10-28 09:48:22,664 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-10-28 09:48:22,664 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 24 states and 34 transitions. [2021-10-28 09:48:22,664 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-10-28 09:48:22,665 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-10-28 09:48:22,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 34 transitions. [2021-10-28 09:48:22,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:48:22,666 INFO L681 BuchiCegarLoop]: Abstraction has 24 states and 34 transitions. [2021-10-28 09:48:22,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 34 transitions. [2021-10-28 09:48:22,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 19. [2021-10-28 09:48:22,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 18 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 09:48:22,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 27 transitions. [2021-10-28 09:48:22,669 INFO L704 BuchiCegarLoop]: Abstraction has 19 states and 27 transitions. [2021-10-28 09:48:22,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:48:22,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:48:22,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:48:22,672 INFO L87 Difference]: Start difference. First operand 19 states and 27 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:48:22,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:48:22,773 INFO L93 Difference]: Finished difference Result 21 states and 28 transitions. [2021-10-28 09:48:22,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:48:22,773 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 28 transitions. [2021-10-28 09:48:22,775 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-28 09:48:22,775 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 21 states and 28 transitions. [2021-10-28 09:48:22,775 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-10-28 09:48:22,775 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-10-28 09:48:22,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 28 transitions. [2021-10-28 09:48:22,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:48:22,776 INFO L681 BuchiCegarLoop]: Abstraction has 21 states and 28 transitions. [2021-10-28 09:48:22,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 28 transitions. [2021-10-28 09:48:22,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2021-10-28 09:48:22,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 17 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:48:22,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 25 transitions. [2021-10-28 09:48:22,779 INFO L704 BuchiCegarLoop]: Abstraction has 18 states and 25 transitions. [2021-10-28 09:48:22,779 INFO L587 BuchiCegarLoop]: Abstraction has 18 states and 25 transitions. [2021-10-28 09:48:22,779 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-28 09:48:22,780 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 25 transitions. [2021-10-28 09:48:22,785 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-28 09:48:22,786 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:48:22,787 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:48:22,787 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2021-10-28 09:48:22,787 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-28 09:48:22,787 INFO L791 eck$LassoCheckResult]: Stem: 778#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 779#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 783#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 788#L24-2 assume !(main_~y~0 < main_~z~0); 786#L24-3 main_~y~0 := main_~x~0 + main_~y~0; 787#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 790#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 792#L24-2 assume !(main_~y~0 < main_~z~0); 784#L24-3 [2021-10-28 09:48:22,788 INFO L793 eck$LassoCheckResult]: Loop: 784#L24-3 main_~y~0 := main_~x~0 + main_~y~0; 785#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 793#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 792#L24-2 assume !(main_~y~0 < main_~z~0); 784#L24-3 [2021-10-28 09:48:22,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:22,789 INFO L85 PathProgramCache]: Analyzing trace with hash -418159556, now seen corresponding path program 6 times [2021-10-28 09:48:22,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:48:22,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48056404] [2021-10-28 09:48:22,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:22,790 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:48:22,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:22,814 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:48:22,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:22,819 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:48:22,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:22,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1711282, now seen corresponding path program 1 times [2021-10-28 09:48:22,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:48:22,820 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813505347] [2021-10-28 09:48:22,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:22,821 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:48:22,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:22,825 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:48:22,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:22,828 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:48:22,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:22,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1441076371, now seen corresponding path program 7 times [2021-10-28 09:48:22,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:48:22,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643990277] [2021-10-28 09:48:22,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:22,830 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:48:22,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:22,838 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:48:22,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:22,847 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:48:22,877 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:48:22,877 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:48:22,877 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:48:22,877 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:48:22,877 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:48:22,877 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:22,878 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:48:22,878 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:48:22,878 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration6_Loop [2021-10-28 09:48:22,878 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:48:22,878 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:48:22,878 INFO 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 09:48:22,881 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:22,883 INFO 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 09:48:22,959 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:48:22,959 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:48:22,959 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:22,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:22,960 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:22,969 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:48:22,969 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:22,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-10-28 09:48:22,993 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:48:22,993 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 09:48:23,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:23,026 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:23,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:23,027 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:23,029 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:48:23,029 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:23,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-10-28 09:48:23,044 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:48:23,045 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 09:48:23,065 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Ended with exit code 0 [2021-10-28 09:48:23,065 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:23,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:23,066 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:23,069 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:48:23,069 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:23,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-10-28 09:48:23,140 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Ended with exit code 0 [2021-10-28 09:48:23,140 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:23,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:23,142 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:23,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-10-28 09:48:23,144 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:48:23,145 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:48:23,901 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:48:23,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:23,905 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:48:23,905 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:48:23,905 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:48:23,905 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:48:23,905 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:48:23,905 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:23,905 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:48:23,905 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:48:23,905 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration6_Loop [2021-10-28 09:48:23,905 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:48:23,905 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:48:23,906 INFO 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 09:48:23,915 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:48:23,917 INFO 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 09:48:23,982 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:48:23,982 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:48:23,983 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:23,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:23,984 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:23,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2021-10-28 09:48:23,994 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 09:48:24,001 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:48:24,001 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:48:24,001 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:48:24,001 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:48:24,003 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:48:24,003 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:48:24,014 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:48:24,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:24,048 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:24,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:24,049 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:24,058 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 09:48:24,067 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:48:24,067 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:48:24,067 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:48:24,067 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:48:24,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2021-10-28 09:48:24,069 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 09:48:24,069 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 09:48:24,082 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:48:24,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:24,103 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:24,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:24,104 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:24,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2021-10-28 09:48:24,106 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 09:48:24,113 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:48:24,113 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:48:24,113 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:48:24,113 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:48:24,113 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:48:24,122 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:48:24,122 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:48:24,124 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:48:24,127 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 09:48:24,127 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 09:48:24,128 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:48:24,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:24,128 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:24,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2021-10-28 09:48:24,129 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:48:24,130 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:48:24,130 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:48:24,130 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0) = 1*ULTIMATE.start_main_~z~0 Supporting invariants [] [2021-10-28 09:48:24,149 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Ended with exit code 0 [2021-10-28 09:48:24,150 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:48:24,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:24,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:24,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:48:24,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:24,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:24,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:48:24,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:24,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:48:24,235 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 09:48:24,235 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 25 transitions. cyclomatic complexity: 11 Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:48:24,252 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 25 transitions. cyclomatic complexity: 11. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 35 states and 50 transitions. Complement of second has 6 states. [2021-10-28 09:48:24,254 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 09:48:24,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:48:24,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2021-10-28 09:48:24,255 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 8 letters. Loop has 4 letters. [2021-10-28 09:48:24,255 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:48:24,255 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 12 letters. Loop has 4 letters. [2021-10-28 09:48:24,255 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:48:24,255 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 8 letters. Loop has 8 letters. [2021-10-28 09:48:24,256 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:48:24,256 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 50 transitions. [2021-10-28 09:48:24,257 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 09:48:24,257 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 0 states and 0 transitions. [2021-10-28 09:48:24,257 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-28 09:48:24,257 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-28 09:48:24,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-28 09:48:24,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:48:24,258 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 09:48:24,258 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 09:48:24,258 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 09:48:24,258 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-10-28 09:48:24,258 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-28 09:48:24,258 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 09:48:24,259 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-28 09:48:24,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 09:48:24 BoogieIcfgContainer [2021-10-28 09:48:24,265 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 09:48:24,265 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:48:24,265 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:48:24,266 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:48:24,266 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:48:15" (3/4) ... [2021-10-28 09:48:24,269 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 09:48:24,269 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:48:24,271 INFO L168 Benchmark]: Toolchain (without parser) took 9534.01 ms. Allocated memory was 90.2 MB in the beginning and 138.4 MB in the end (delta: 48.2 MB). Free memory was 60.8 MB in the beginning and 68.7 MB in the end (delta: -8.0 MB). Peak memory consumption was 42.7 MB. Max. memory is 16.1 GB. [2021-10-28 09:48:24,271 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 90.2 MB. Free memory was 59.2 MB in the beginning and 59.2 MB in the end (delta: 77.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:48:24,272 INFO L168 Benchmark]: CACSL2BoogieTranslator took 190.85 ms. Allocated memory is still 90.2 MB. Free memory was 60.6 MB in the beginning and 52.0 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:48:24,272 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.67 ms. Allocated memory is still 90.2 MB. Free memory was 51.8 MB in the beginning and 50.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:48:24,273 INFO L168 Benchmark]: Boogie Preprocessor took 18.12 ms. Allocated memory is still 90.2 MB. Free memory was 50.5 MB in the beginning and 49.7 MB in the end (delta: 793.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:48:24,273 INFO L168 Benchmark]: RCFGBuilder took 277.15 ms. Allocated memory is still 90.2 MB. Free memory was 49.6 MB in the beginning and 41.6 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:48:24,273 INFO L168 Benchmark]: BuchiAutomizer took 9003.18 ms. Allocated memory was 90.2 MB in the beginning and 138.4 MB in the end (delta: 48.2 MB). Free memory was 41.6 MB in the beginning and 69.8 MB in the end (delta: -28.2 MB). Peak memory consumption was 21.8 MB. Max. memory is 16.1 GB. [2021-10-28 09:48:24,274 INFO L168 Benchmark]: Witness Printer took 4.21 ms. Allocated memory is still 138.4 MB. Free memory was 69.8 MB in the beginning and 68.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:48:24,276 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 90.2 MB. Free memory was 59.2 MB in the beginning and 59.2 MB in the end (delta: 77.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 190.85 ms. Allocated memory is still 90.2 MB. Free memory was 60.6 MB in the beginning and 52.0 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 30.67 ms. Allocated memory is still 90.2 MB. Free memory was 51.8 MB in the beginning and 50.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.12 ms. Allocated memory is still 90.2 MB. Free memory was 50.5 MB in the beginning and 49.7 MB in the end (delta: 793.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 277.15 ms. Allocated memory is still 90.2 MB. Free memory was 49.6 MB in the beginning and 41.6 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 9003.18 ms. Allocated memory was 90.2 MB in the beginning and 138.4 MB in the end (delta: 48.2 MB). Free memory was 41.6 MB in the beginning and 69.8 MB in the end (delta: -28.2 MB). Peak memory consumption was 21.8 MB. Max. memory is 16.1 GB. * Witness Printer took 4.21 ms. Allocated memory is still 138.4 MB. Free memory was 69.8 MB in the beginning and 68.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 7 terminating modules (1 trivial, 4 deterministic, 2 nondeterministic). One deterministic module has 2-nested ranking function (if x > 0 then 1 else 0), (if x > 0 then x else y) and consists of 5 locations. One deterministic module has affine ranking function z + -1 * y and consists of 4 locations. One deterministic module has 2-nested ranking function (if x > 0 then 1 else 0), (if x > 0 then x else y + x) and consists of 5 locations. One deterministic module has affine ranking function z and consists of 4 locations. One nondeterministic module has affine ranking function z + -1 * y and consists of 4 locations. One nondeterministic module has 2-nested ranking function (if x > 0 then 1 else 0), (if x > 0 then x else y + x) and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 8.9s and 7 iterations. TraceHistogramMax:2. Analysis of lassos took 6.5s. Construction of modules took 0.1s. Büchi inclusion checks took 2.0s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 6. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 17 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 18 states and ocurred in iteration 3. Nontrivial modules had stage [4, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/1 HoareTripleCheckerStatistics: 66 SDtfs, 67 SDslu, 8 SDs, 0 SdLazy, 139 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT5 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax168 hnf100 lsp53 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq164 hnf93 smp97 dnf100 smp100 tf109 neg100 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 42ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 3 MotzkinApplications: 9 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 10 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 2.4s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-10-28 09:48:24,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:24,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:24,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1328afe-6484-42c6-8b9f-e4ed71f12d5d/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...